CN109675147B - Actuator suitable for magnetic field environment, piston type injection device and control method - Google Patents
Actuator suitable for magnetic field environment, piston type injection device and control method Download PDFInfo
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- CN109675147B CN109675147B CN201710973075.1A CN201710973075A CN109675147B CN 109675147 B CN109675147 B CN 109675147B CN 201710973075 A CN201710973075 A CN 201710973075A CN 109675147 B CN109675147 B CN 109675147B
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- 238000002347 injection Methods 0.000 title claims abstract description 26
- 239000007924 injection Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 7
- 230000005284 excitation Effects 0.000 claims abstract description 64
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 229920001971 elastomer Polymers 0.000 claims description 19
- 239000000806 elastomer Substances 0.000 claims description 19
- 230000008859 change Effects 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M5/2033—Spring-loaded one-shot injectors with or without automatic needle insertion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/2006—Having specific accessories
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/19—Constructional features of carpules, syringes or blisters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention provides an actuator, a piston type injection device and a control method suitable for a magnetic field environment, comprising the following steps: the moving part (300) is arranged on the structural body (200) in a sliding way; the controllable stopper (100) is capable of locking and releasing the moving member (300); both ends of the external excitation deformation body (400) in the deformation direction are respectively connected with the controllable stopper (100) and the structural body (200). The invention relates to a non-magnetic motion platform, which controls the deformation of an excitation deformation body in a non-magnetic energy excitation mode, so that the deformation is used for driving a moving part. Wherein the driving of the moving member is realized by accumulating short strokes. By means of two controllable stops, a real-time motion stop and positioning at any position in a single-step stroke can be achieved.
Description
Technical Field
The invention relates to the field of precise driving of non-magnetic excitation sources, in particular to an actuator, a piston type injection device and a control method suitable for a magnetic field environment.
Background
The traditional precise driving mostly adopts an electromagnetic driving mode, and the mode obtains a magnetic field by utilizing an electromagnetic principle, so that magnetic force is applied to a magnetic sensitive component positioned in the magnetic field, and further the driving of the magnetic sensitive component is realized.
However, in the application occasion of the magnetic environment, the environment has magnetic fields, and when the driving mode also adopts the electromagnetic driving mode, the two magnetic fields mutually interfere, so that the improvement of the driving control precision is not facilitated.
Disclosure of Invention
In view of the drawbacks of the prior art, an object of the present invention is to provide an actuator, a piston-type injection device and a control method suitable for use in a magnetic field environment.
According to the present invention, there is provided an actuator adapted to be used in a magnetic field environment, comprising: controllable stopper 100, structure 200, moving member 300, and externally energized deformation body 400;
The moving member 300 is slidably mounted on the structure 200;
The controllable stopper 100 is mounted on the moving member 300, and the controllable stopper 100 can lock and release the moving member 300 in a moving direction of the moving body 300;
Both ends of the externally excited deformation body 400 in the deformation direction are respectively connected with the controllable stopper 100 and the structural body 200;
the controllable stopper 100 includes a housing 104, a slider 105, and a limit slide groove 106;
The shell 104 extends out of the sliding block 105 and moves synchronously, and the sliding block 105 is limited in the limiting sliding groove 106 to slide; wherein, the extending direction of the limit sliding groove 106 is parallel to the moving direction of the moving member 300.
Preferably, the controllable stopper 100 comprises a first channel 101, a second channel 102, the controllable stopper 100 further comprising a first internally energized variant 500, a second internally energized variant 600 located within the first channel 101, the second channel 102, respectively;
The first channel 101 and the second channel 102 are internally provided with a moving contact body 103; the first channel 101 and the second channel 102 are narrowed from wide to narrow along the axial direction to form a wide opening and a narrow opening;
in the first passage 101, both ends of the first internal excitation deformation body 500 in the deformation direction are respectively connected to the narrow opening of the first passage 101, the moving contact body 103;
In the second passage 102, both ends of the second internal excitation deformation body 600 in the deformation direction are respectively connected to the narrow opening of the second passage 102, the moving contact body 103;
The first and second internally energized variants 500, 600 are each capable of driving the connected moving contact 103 to a narrow mouth for said locking, and the first and second internally energized variants 500, 600 are each capable of driving the connected moving contact 103 to a wide mouth for said releasing.
The moving member 300 penetrates the first channel 101 and the second channel 102.
Preferably, the outer preset elastomer 800 and the inner preset elastomer 700 are also included;
The external preset elastomer 800 is connected between the controllable stopper 100 and the structure 200;
the internal preset elastomer 700 is connected between the moving contact 103 in the first channel 101 and the moving contact 103 in the second channel 102.
Preferably, the externally energized variant 400 is a non-magnetic energy energized variant;
the first internal excitation variation 500 is a non-magnetic energy excitation variation;
the second internal excitation variation 600 is a non-magnetic energy excitation variation;
the non-magnetic energy excitation deformation body is an electrodeformation, photo-deformation, thermal deformation, cold deformation, phase change deformation or chemical induction deformation body;
The external preset elastomer 800 is a pre-tensioned spring;
the internal pre-set elastomer 700 is a pre-tensioned spring.
Preferably, the structure 200 is a rolling friction body or a sliding friction body;
The moving member 300 is a rigid member;
The length of the slider 105 can be adjusted;
the length of the limiting slide groove 106 can be adjusted;
one or more stops are provided in the limit slide groove 106.
Preferably, the device further comprises a platform structure 901 and a base station 902;
The platform structure 901 is fixedly connected to the moving member 300;
the moving member 300 is provided on the structure 200, and the structure 200 is slidably provided on the base 902;
The sliding direction of the structure 200 forms an angle with the moving direction of the moving member 300.
Preferably, a guide runner 903 is included;
the two sleeve bodies of the guiding sliding sleeve 903 are respectively and fixedly connected with the controllable stopper 100 and the structural body 200;
The external excitation deformation body 400 is positioned in the guide sliding sleeve 903;
The mover 300 penetrates the guide sliding sleeve 903.
According to the present invention, there is provided a piston type injection device comprising the actuator adapted for use in a magnetic field environment, the piston type injection device further comprising a syringe 907;
one end of the motion piece 300 is fixedly connected with a piston 9071 of a syringe 907.
Preferably, a displacement sensor 908 is also included; the displacement sensor 908 is arranged between the sliding block 105 and the limit sliding groove 106;
in addition to the one controllable stopper 100 comprised by the actuator adapted for use in a magnetic field environment, the piston type injection device comprises a further controllable stopper 100, wherein the further controllable stopper 100 is penetrated by the other end of the movement 300 and the housing 104 of the further controllable stopper 100 is fixed relative to the barrel 9072 of the syringe.
According to the control mode of the piston type injection device provided by the invention, the control mode comprises the following steps:
By controlling the excitation of the externally excited deformation body 400, the relative movement between the controllable stopper 100 and the structure 200 of the actuator suitable for use in a magnetic field environment is changed;
By controlling the excitation of the first and second internal excitation deformations 500, 600, the locking and release of the motion member 300 by the controllable stopper 100 adapted to the actuator in the magnetic field environment is switched;
The controllable stopper 100 and the moving piece 300 synchronously move through the locking of the controllable stopper 100 of the actuator suitable for the magnetic field environment to the moving piece 300;
By releasing the controllable stopper 100 of the actuator suitable for the magnetic field environment to the moving member 300, the controllable stopper 100 and the moving member 300 can independently move;
The locking of the moving member 300 is achieved by the other controllable stopper 100 according to the displacement of the controllable stopper 100 of the actuator adapted for use in a magnetic field environment detected by the displacement sensor 908, so that the controllable stopper 100 of the actuator adapted for use in a magnetic field environment, which is also locked with the moving member 300, is stopped at any position in a single step stroke.
Compared with the prior art, the invention has the following beneficial effects:
The invention relates to a non-magnetic motion platform, which controls the deformation of an excitation deformation body in a non-magnetic energy excitation mode, so that the deformation is used for driving a moving part. Wherein the driving of the moving member is realized by accumulating short strokes.
By means of two controllable stops, a real-time motion stop and positioning at any position in a single-step stroke can be achieved.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
fig. 1 is a schematic diagram of an infrastructure of a first embodiment of the invention.
Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 3 is a schematic structural view of a second embodiment of the present invention.
Fig. 4 is a schematic structural view of a third embodiment of the present invention.
The figure shows:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Basic embodiment
According to the present invention, there is provided an actuator adapted to be used in a magnetic field environment, comprising: controllable stopper 100, structure 200, moving member 300, and externally energized deformation body 400;
The moving member 300 is slidably mounted on the structure 200;
The controllable stopper 100 is mounted on the moving member 300, and the controllable stopper 100 can be unidirectionally locked, bidirectionally locked, and release the moving member 300 in a moving direction of the moving body 300;
both ends of the externally excited deformation body 400 in the deformation direction are connected to the controllable stopper 100 and the structure 200, respectively.
Principle of operation of the basic embodiment
The externally energized deformation body 400 is capable of deforming, e.g., elongating or shortening, upon being energized by external non-magnetic energy to thereby drive the controllable stop 100 and the structure 200 away from or toward each other.
The controllable stopper 100 can lock up and release the moving member 300 unidirectionally, bidirectionally, so that the controllable stopper 100 can clamp the moving member 300 to drive the moving member 300 to move unidirectionally and bidirectionally, and the controllable stopper 100 does not restrict the movement of the moving member 300.
Thus, when the controllable stopper 100 moves away from or toward each other with respect to the structure 200, the controllable stopper 100 can cause the mover 300 to move synchronously with respect to the structure 200 by being locked.
It should be noted that, the present invention is an actuator suitable for use in a magnetic field environment, and the external excitation deformation body 400 and the driving energy source for locking and releasing the controllable stopper 100 are all non-magnetic energy sources, so that the present invention can be applied in a magnetic environment to avoid magnetic interference of the magnetic environment to the platform.
The preferred embodiments of the basic embodiment will be specifically described below with reference to the drawings.
First embodiment
As shown in fig. 1, the infrastructure of the first embodiment of the present invention.
The controllable stopper 100 comprises a first channel 101, a second channel 102, the controllable stopper 100 further comprising a first internally energized variant 500, a second internally energized variant 600 located within the first channel 101, the second channel 102, respectively;
The first channel 101 and the second channel 102 are internally provided with a moving contact body 103; the first channel 101 and the second channel 102 are narrowed from wide to narrow along the axial direction to form a wide opening and a narrow opening;
in the first passage 101, both ends of the first internal excitation deformation body 500 in the deformation direction are respectively connected to the narrow opening of the first passage 101, the moving contact body 103;
In the second passage 102, both ends of the second internal excitation deformation body 600 in the deformation direction are respectively connected to the narrow opening of the second passage 102, the moving contact body 103;
The first and second internally energized variants 500, 600 are each capable of driving the connected moving contact 103 to a narrow mouth for said locking, and the first and second internally energized variants 500, 600 are each capable of driving the connected moving contact 103 to a wide mouth for said releasing.
Wherein the first internally energized body 500 may be elongated or shortened when energized and the second internally energized body 600 may be elongated or shortened when energized. The first internal actuating deformation body 500, the second internal actuating deformation body 600 and the internal preset elastic body 700 are combined to switch the locking and releasing of the moving member 300 between the actuated state and the unactuated state.
The moving member 300 penetrates the first channel 101 and the second channel 102.
The actuator suitable for the magnetic field environment further comprises an external preset elastomer 800 and an internal preset elastomer 700;
The external preset elastomer 800 is connected between the controllable stopper 100 and the structure 200;
the internal preset elastomer 700 is connected between the moving contact 103 in the first channel 101 and the moving contact 103 in the second channel 102.
The externally energized variant 400 is a non-magnetic energy energized variant; the first internal excitation variation 500 is a non-magnetic energy excitation variation; the second internal excitation variation 600 is a non-magnetic energy excitation variation; the non-magnetic energy excitation deformation body is an electrodeformation, photo-deformation, thermal deformation, cold deformation, phase change deformation or chemical induction deformation body;
the external preset elastomer 800 is a pre-tensioned spring; the internal pre-set elastomer 700 is a pre-tensioned spring.
The structure 200 is a linear bearing or a friction damper.
Preferably, in FIG. 1, the externally energized deformation 400, the first internally energized deformation 500, and the second internally energized deformation 600 are all spring members made of an electrically deformable shape memory alloy. V 0+、V0 -positive and negative of the outer excitation variation 400, V 1+、V1 -positive and negative of the first inner excitation variation 500, and V 2+、V2 -positive and negative of the second inner excitation variation 600.
Principle of operation of the first embodiment
In fig. 1,4 sub-diagrams are shown from top to bottom along the paper surface, and these 4 sub-diagrams each show 4 states of the actuator suitable for use in a magnetic field environment, which are described below.
State 1: none of the outer excitation variation 400, the first inner excitation variation 500, and the second inner excitation variation 600 are excited; the internal preset elastic body 700 is a pre-tightening spring, namely, the moving contact body 103 in the first channel 101 and the moving contact body 103 in the second channel 102 are respectively propped and sprung open towards the respective corresponding narrow opening to realize bidirectional locking at first, so that the controllable stopper 100 and the moving piece 300 are relatively fixed; the external preset elastomer 800 is a pre-tensioned spring such that the controllable stopper 100 is close to the structure 200;
state 2: the external excitation deformation body 400 is excited to extend, the first internal excitation deformation body 500 and the second internal excitation deformation body 600 are kept not excited, so that the external excitation deformation body 400 drives the controllable stopper 100 to drive the moving piece 300 to be far away from the structural body 200, and the movement stroke dS is realized;
State 3: the external excitation deformation body 400 is not excited to shorten, the first internal excitation deformation body 500 and the second internal excitation deformation body 600 are excited to elongate, and bidirectional release of the controllable stopper 100 to the moving piece 300 is realized, so that the external excitation deformation body 400 drives the controllable stopper 100 to approach the structural body 200; because of the bi-directional release of the motion member 300 by the controllable stopper 100, the motion of the controllable stopper 100 cannot move the motion member 300 or is immobilized based on the frictional force provided by the structure 200;
state 4: after the controllable stopper 100 returns to the 1 st state, the external excitation variation 400, the first internal excitation variation 500, and the second internal excitation variation 600 are stopped from being excited.
Thus, the movement of the primary mover 300 in the right direction of fig. 1 by the distance dS is completed from the 1 st state to the 4 th state, and the long distance movement can be realized by repeating the 1 st state to the 4 th state. Similarly, the present invention can also realize movement in the left direction of fig. 1 by time series change.
First embodiment
As shown in fig. 2, the first embodiment of the present invention has a specific structure.
The controllable stopper 100 includes a housing 104, a slider 105, and a limit slide groove 106;
The shell 104 extends out of a sliding block 105 which is rigidly connected, the shell 104 and the sliding block 105 move synchronously all the time, and the sliding block 105 is limited in a limiting sliding groove 106 to slide; wherein, the extending direction of the limit sliding groove 106 is parallel to the moving direction of the moving member 300;
The moving member 300 is a rod member, and the moving direction of the moving member 300 is the axial direction of the rod member.
Principle of operation of the first embodiment
The single step stroke dS0 of each movement of the mover 300 can be precisely controlled in the first embodiment, so that the single step stroke multiplied by the number of movements can precisely obtain the movement distance.
Specifically, the sliding block 105 is limited to slide in the limiting sliding groove 106, and the length of the sliding stroke provided by the limiting sliding groove 106 is a certain value, that is, dS0, so that the length of the sliding stroke of the housing 104 of the controllable stopper 100 to which the sliding block 105 is rigidly connected is also dS0, and thus the moving distance of each moving member 300 is also a certain value of dS0. Thus achieving precise control of a single step stroke.
Preferably, one or more stops are provided within the limit slide groove 106 to vary the slide groove length defined by the limit slide groove 106. Or the limit slide 106 itself can adjust the slide length so that the length of the single step stroke is adjusted. Or alternatively the length of the slider 105 can be adjusted so that the length of the single step stroke is adjusted.
Second embodiment
As shown in fig. 3, a second embodiment of the present invention.
The second embodiment is a preferred embodiment of the basic embodiment and is also a preferred embodiment of the first embodiment.
The actuator suitable for the magnetic field environment further comprises a platform structure 901 and a base station 902;
The platform structure 901 is fixedly connected to the moving member 300;
the moving member 300 is provided on the structure 200, and the structure 200 is slidably provided on the base 902;
The sliding direction of the structure 200 forms an angle with the moving direction of the moving member 300.
Principle of operation of the second embodiment
The motion of the motion piece 300 can drive the platform structure 901 to move along the first direction;
The movement of the structure 200 relative to the base 902 can drive the mover 300 to move in the second direction, so that the platform structure 901 obtains a movement in a composite direction composed of the movement in the first direction and the movement in the second direction.
For example, the second direction in fig. 3 is the direction perpendicular to the paper surface.
Third embodiment
As shown in fig. 4, a third embodiment of the present invention. The third embodiment is a preferable example of the first embodiment.
According to the present invention, there is provided a piston type injection device comprising the actuator adapted for use in a magnetic field environment, the piston type injection device further comprising a syringe 907;
one end of the moving member 300 is fixedly connected with a piston 9071 of a syringe 907;
the piston injection device further comprises a displacement sensor 908; the displacement sensor 908 is arranged between the sliding block 105 and the limit sliding groove 106;
in addition to the one controllable stopper 100 comprised by the actuator adapted for use in a magnetic field environment, the piston type injection device comprises a further controllable stopper 100, wherein the further controllable stopper 100 is penetrated by the other end of the movement 300 and the housing 104 of the further controllable stopper 100 is fixed relative to the barrel 9072 of the syringe.
The displacement sensor 908 includes any one of the following sensors and probes:
-a sliding wire varistor displacement sensor, such as a solenoid;
-a laser displacement sensor;
-an optical fiber displacement sensor;
-an electrostatic displacement sensor;
-a magneto-electric displacement sensor;
-a strain displacement sensor;
-a hall sensor;
-a grating ruler;
-an encoder.
The actuator suitable for the magnetic field environment comprises a guide sliding sleeve 903;
the two sleeve bodies of the guiding sliding sleeve 903 are respectively and fixedly connected with the controllable stopper 100 and the structural body 200;
The external excitation deformation body 400 is positioned in the guide sliding sleeve 903;
The mover 300 penetrates the guide sliding sleeve 903.
Principle of operation of the third embodiment
The working principle of the third embodiment is partially the same as that of the second embodiment, on the basis of the second embodiment, the single-step stroke movement of the moving member 300 can drive the small stroke of the piston of the injection cylinder to push or pull back, so that accurate control is realized, and according to the last single-step stroke in the whole injection process, the moving member 300 is locked by the other controllable stopper 100 according to the displacement of the controllable stopper 100, which is detected by the displacement sensor 908 and is applicable to the actuator under the magnetic field environment, so that the controllable stopper 100, which is also locked with the moving member 300 and is applicable to the actuator under the magnetic field environment, is stopped at any position in the single-step stroke. Closed loop control over a single step range of travel is achieved. The total travel of the moving member 300 is the sum of the accumulation of the plurality of single step travels and the partial single step travel stopped at any position in the last single step travel.
The invention also provides a control mode of the piston type injection device, which comprises the following steps:
By controlling the excitation of the externally excited deformation body 400, the relative movement between the controllable stopper 100 and the structure 200 of the actuator suitable for use in a magnetic field environment is changed;
By controlling the excitation of the first and second internal excitation deformations 500, 600, the locking and release of the motion member 300 by the controllable stopper 100 adapted to the actuator in the magnetic field environment is switched;
The controllable stopper 100 and the moving piece 300 synchronously move through the locking of the controllable stopper 100 of the actuator suitable for the magnetic field environment to the moving piece 300;
By releasing the controllable stopper 100 of the actuator suitable for the magnetic field environment to the moving member 300, the controllable stopper 100 and the moving member 300 can independently move;
The locking of the moving member 300 is achieved by the other controllable stopper 100 according to the displacement of the controllable stopper 100 of the actuator adapted for use in a magnetic field environment detected by the displacement sensor 908, so that the controllable stopper 100 of the actuator adapted for use in a magnetic field environment, which is also locked with the moving member 300, is stopped at any position in a single step stroke.
Wherein, by separately and independently controlling the first and second internal excitation deformations 500, 600, one-way locking and two-way locking can be achieved.
In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (8)
1. A piston injection device comprising an actuator adapted for use in a magnetic field environment, the actuator adapted for use in a magnetic field environment comprising: a controllable stopper (100), a structural body (200), a moving member (300), an externally energized deformation body (400); the moving part (300) is arranged on the structural body (200) in a sliding way;
The controllable stopper (100) is mounted on the moving member (300), and the controllable stopper (100) can lock and release the moving member (300) in the moving direction of the moving member (300);
Both ends of the external excitation deformation body (400) in the deformation direction are respectively connected with the controllable stopper (100) and the structural body (200); the controllable stopper (100) comprises a shell (104), a sliding block (105) and a limiting sliding groove (106);
the shell (104) extends out of the sliding block (105) and synchronously moves, the sliding block (105) is limited to slide in the limiting sliding groove (106), the length of the groove of the limiting sliding groove (106) can be adjusted, and one or more stop blocks are arranged in the groove of the limiting sliding groove (106); wherein, the extending direction of the limit sliding groove (106) is parallel to the moving direction of the moving piece (300);
the controllable stopper (100) comprises a first channel (101) and a second channel (102), and a movable contact body (103) is arranged in each of the first channel (101) and the second channel (102);
The device further comprises an external preset elastomer (800) and an internal preset elastomer (700), wherein the internal preset elastomer (700) is connected between the moving contact body (103) in the first channel (101) and the moving contact body (103) in the second channel (102);
The external excitation deformation body (400) is a non-magnetic energy excitation deformation body;
The first internal excitation variation (500) is a non-magnetic energy excitation variation; the second internal excitation variation (600) is a non-magnetic energy excitation variation;
the non-magnetic energy excitation deformation body is an electrodeformation, photo-deformation, thermal deformation, cold deformation, phase change deformation or chemical induction deformation body;
the external preset elastomer (800) is a pre-tensioned spring; the internal preset elastomer (700) is a pre-tightening spring;
the piston injection device further comprises a syringe (907);
one end of the moving piece (300) is fixedly connected with a piston (9071) of a syringe (907).
2. The piston injection device according to claim 1, wherein the controllable stopper (100) further comprises a first (500) and a second (600) internal excitation profile located in the first (101) and the second (102) channel, respectively;
the first channel (101) and the second channel (102) are narrowed from wide to narrow along the axial direction to form a wide opening and a narrow opening;
In the first channel (101), two ends of the first internal excitation deformation body (500) in the deformation direction are respectively connected with a narrow opening of the first channel (101) and the moving contact body (103);
In the second channel (102), two ends of the second internal excitation deformation body (600) in the deformation direction are respectively connected with a narrow opening of the second channel (102) and the moving contact body (103);
the first internal excitation deformation body (500) and the second internal excitation deformation body (600) can drive the connected moving contact body (103) to a narrow opening for locking, and the first internal excitation deformation body (500) and the second internal excitation deformation body (600) can drive the connected moving contact body (103) to a wide opening for releasing, so that the moving piece (300) penetrates through the first channel (101) and the second channel (102).
3. The piston injection device according to claim 2, wherein an external pre-set elastomer (800) is connected between the controllable stopper (100) and the structure (200).
4. The piston injection device according to claim 1, wherein the structure (200) is a rolling friction body or a sliding friction body;
The moving part (300) is a rigid part;
The length of the sliding block (105) can be adjusted.
5. The piston injection device according to claim 1, further comprising a platform structure (901), a base station (902);
The platform structure (901) is fixedly connected to the moving piece (300);
The moving part (300) is arranged on the structural body (200), and the structural body (200) is arranged on the base (902) in a sliding way; an included angle is formed between the sliding direction of the structure body (200) and the moving direction of the moving piece (300).
6. The piston injection device according to claim 1, comprising a guiding slide (903);
The two sleeve bodies of the guide sliding sleeve (903) are respectively and fixedly connected with the controllable stopper (100) and the structural body (200); the external excitation deformation body (400) is positioned in the guide sliding sleeve (903);
the moving part (300) penetrates the guide sliding sleeve (903).
7. The piston injection device of claim 1, further comprising a displacement sensor (908); the displacement sensor (908) is arranged between the sliding block (105) and the limiting sliding groove (106);
in addition to the one controllable stopper (100) comprised by the actuator adapted for use in a magnetic field environment, the piston injection device comprises a further controllable stopper (100), wherein the further controllable stopper (100) is penetrated by the other end of the movement member (300) and the housing (104) of the further controllable stopper (100) is fixed relative to the barrel (9072) of the syringe.
8. A method of controlling a piston injection device as claimed in claim 7, comprising:
By controlling the excitation of the externally excited deformation body (400), the relative movement between the controllable stopper (100) and the structural body (200) of the actuator suitable for use in a magnetic field environment is changed;
-switching the locking and release of the moving part (300) by the controllable stopper (100) of the actuator adapted to the magnetic field environment by control of the actuation of the first internal actuation profile (500), the second internal actuation profile (600);
The controllable stopper (100) of the actuator suitable for the magnetic field environment is used for locking the moving piece (300), so that synchronous movement of the controllable stopper (100) and the moving piece (300) is realized;
The controllable stopper (100) and the moving piece (300) can move independently through the release of the controllable stopper (100) of the actuator in the magnetic field environment;
According to the displacement of the controllable stopper (100) of the actuator suitable for the magnetic field environment, which is detected by the displacement sensor (908), the locking of the moving piece (300) is realized by the other controllable stopper (100), so that the controllable stopper (100) of the actuator suitable for the magnetic field environment, which is also locked with the moving piece (300), is stopped at any position in a single-step stroke.
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| CN201710973075.1A CN109675147B (en) | 2017-10-18 | 2017-10-18 | Actuator suitable for magnetic field environment, piston type injection device and control method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109676402A (en) * | 2017-10-18 | 2019-04-26 | 南京伶机宜动驱动技术有限公司 | Without magnetic motion platform and combinations thereof structure and control method |
| CN208823651U (en) * | 2017-10-18 | 2019-05-07 | 杨斌堂 | Suitable for the actuator and piston type injection device under magnetic field environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1514925A (en) * | 1975-08-15 | 1978-06-21 | Plessey Co Ltd | Electromagnetic flexible tube restricting devices |
| JP4503136B2 (en) * | 2000-05-17 | 2010-07-14 | 文化シヤッター株式会社 | Sliding door free stop device and sliding door device |
| CN100369283C (en) * | 2003-07-15 | 2008-02-13 | 西北工业大学 | Telescopic deformation claming/locating method |
| CN100388612C (en) * | 2004-10-28 | 2008-05-14 | 天津大学 | Large stroke length nano-stepping piezoelectric motor |
| JP4399733B2 (en) * | 2004-12-20 | 2010-01-20 | 株式会社デンソー | Magnetic switch for starter |
| US8225910B2 (en) * | 2005-11-16 | 2012-07-24 | Freni Brembo S.P.A. | Device for controlling the piston roll-back |
| GB0907534D0 (en) * | 2009-05-01 | 2009-06-10 | Owen Mumford Ltd | Injection devices |
| US9173999B2 (en) * | 2011-01-26 | 2015-11-03 | Kaleo, Inc. | Devices and methods for delivering medicaments from a multi-chamber container |
| GB2534599A (en) * | 2015-01-29 | 2016-08-03 | Owen Mumford Ltd | A medicament delivery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109676402A (en) * | 2017-10-18 | 2019-04-26 | 南京伶机宜动驱动技术有限公司 | Without magnetic motion platform and combinations thereof structure and control method |
| CN208823651U (en) * | 2017-10-18 | 2019-05-07 | 杨斌堂 | Suitable for the actuator and piston type injection device under magnetic field environment |
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