CN216682229U

CN216682229U - Reaction cup tongs device

Info

Publication number: CN216682229U
Application number: CN202220140793.7U
Authority: CN
Inventors: 孟刚; 梁艳伟; 高春海
Original assignee: Beijing Baiyin Biotechnology Co ltd
Current assignee: Beijing Baiyin Biotechnology Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-06-07
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses a gripper device for reaction cups, which relates to the field of gripper devices for reaction cups and comprises a base, wherein a driving device is arranged on the base; the reaction cup tongs device still includes: the crank is arranged at the rotating end of the driving device and reciprocates by taking the rotating end of the driving device as a shaft; the first gripper part comprises a first gripper sheet which is connected with the crank in a sliding way; the first rotating assembly penetrates upwards to the first gripper piece and is connected with the base; the microswitch is arranged on the first gripper piece; the second gripper part comprises a second gripper sheet which is connected with the crank in a sliding way; and the second rotating assembly penetrates upwards to the second gripper sheet and is connected with the base. The technical scheme of the utility model has the advantages of simple structure, lower manufacturing cost and easier assembly.

Description

Reaction cup tongs device

Technical Field

The utility model belongs to the technical field of sample analysis devices, and particularly relates to a gripper device for a reaction cup.

Background

In automatic sample analysis devices, for example: the chemiluminescence immunoassay analyzer is characterized in that a reaction cup gripping device is an important executing mechanism in equipment and is used for realizing the grabbing and placing work of reaction cup consumables. Whether the design of the reaction cup gripping device is reasonable or not can be said to directly influence the overall reliability of the instrument and equipment and the testing flux.

The reaction cup gripper devices for realizing the same function in the market at present mostly adopt electromagnet devices, electromagnets drive moving parts to realize the movement, for example, telescopic movement of the electromagnets drives a driving roller to push a swing arm mechanism, and finally swinging movement of the swing arm mechanism realizes opening and closing movement of the gripper mechanism.

Also some adopt crank mechanism to realize, for example the utility model patent of publication No. CN208795753U, the reaction cup tongs device of adoption crank principle, the structure is complicated, and is higher to the part machining precision requirement, and manufacturing cost is higher, and is higher to the system control precision requirement simultaneously, and the reliability is poor.

Based on this, it is the problem that awaits the opportune moment to design a structure simpler, and the cost is lower, moves more reliable reaction cup tongs.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems in the related art, the utility model provides a gripper for reaction cups. The specific technical scheme is as follows:

the gripper device for the reaction cup comprises a base, wherein a driving device is arranged on the base; simultaneously, reaction cup tongs device still includes:

the crank is arranged at the rotating end of the driving device and reciprocates by taking the rotating end of the driving device as a shaft;

first tongs portion specifically includes:

the first gripper piece is arranged and connected with the crank in a sliding manner;

the first rotating assembly is arranged to penetrate upwards to the first hand grip piece and is connected with the base;

the microswitch is arranged on the first gripper sheet;

the second tongs portion specifically includes:

the second gripper piece is arranged and connected with the crank in a sliding manner;

and the second rotating assembly is arranged to upwards penetrate through the second hand grip piece and is connected with the base.

Optionally, a first sliding groove and a second sliding groove are formed in the crank, a first hand grasping part bearing is arranged on the first hand grasping piece, the first hand grasping part bearing is embedded in the first sliding groove, and when the crank reciprocates, the first hand grasping piece rotates relative to the crank;

the second grabbing piece is provided with a second grabbing part bearing, the second grabbing part bearing is embedded in the second sliding groove, and the second grabbing piece rotates relative to the crank when the crank reciprocates;

the first hand-held piece and the second hand-held piece rotate in opposite directions.

Optionally, the first rotating assembly comprises:

the first gripper rotating shaft penetrates through the crank upwards and is fixedly connected with the base;

the first hand grip compression spring is sleeved on a part of the first hand grip rotating shaft between the crank and the base.

Optionally, the second rotating assembly comprises:

the second hand grip rotating shaft penetrates through the crank upwards and is fixedly connected with the base;

and the first hand grip compression spring is sleeved on part of the second hand grip rotating shaft between the crank and the base.

Optionally, an anti-collision plate is arranged on the first gripper sheet, a microswitch is arranged on the base, and the anti-collision plate abuts against the microswitch along with the upward movement of the first gripper sheet.

Optionally, an extension spring fixing plate is arranged on the base, an extension spring is assembled on the extension spring fixing plate, one end of the extension spring is fixed on the base, and the other end of the extension spring is fixed on the crank and used for pulling the crank to rotate when the hand gripping portion needs to be closed.

Optionally, a first detection optocoupler fixing plate and a second detection optocoupler fixing plate are arranged on the base, wherein the first detection optocoupler fixing plate is assembled with a first detection optocoupler, and the second detection optocoupler fixing plate is assembled with a second detection optocoupler.

Optionally, the crank is symmetrically provided with a left optical coupler baffle structure and a right optical coupler baffle structure.

The technical scheme of the reaction cup gripping device provided by the utility model can have the following beneficial effects:

the principle of the crank swinging guide rod mechanism is adopted, so that in the opening and closing processes of the gripper parts, the deviation between the axis of the cylinder surrounded by the two gripper parts and the axis of the driving motor is small, the two gripper parts are close to coincide, the gripper device is more favorable for realizing accurate positioning, the gripping precision is higher, and the requirement on the control precision of the system is reduced. Based on the characteristic, compared with the principle that other manufacturers adopt cam design, the reaction cup gripping device has more advantages, and the reaction cup gripping device is simpler in overall structure, lower in manufacturing cost and easier to assemble.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate preferred embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is an exploded view of the mounting of a cuvette holder assembly according to a preferred embodiment of the utility model;

FIG. 2 is a mechanical schematic diagram of a crank swing guide mechanism used in the gripping device of the reaction cup according to the preferred embodiment of the present invention;

FIG. 3 is a schematic diagram of the movement of the first gripper portion and the second gripper portion of the crank assembly of the gripper for reaction cups according to the preferred embodiment of the present invention;

FIG. 4 is a schematic structural view of a crank of the gripper for reaction cups according to the preferred embodiment of the present invention;

FIG. 5 is a schematic diagram of the structure of the reaction cup gripper according to the preferred embodiment of the present invention, wherein the first gripper portion and the second gripper portion are assembled with the crank, and the extension spring is assembled with the crank;

fig. 6 is a top view of the crank assembly of the reaction cup gripper of the preferred embodiment of the present invention with the first and second gripper plates and the extension spring.

Reference numerals:

100-a drive device;

201-a base; 202-tension spring fixing plate; 203-a second detection optocoupler fixing plate; 204-a first detection optocoupler fixing plate;

301-crank; 3011-a first chute; 3012-a second runner; 3013-left optocoupler catch structure; 3014-right optical coupler catch structure;

400-a first gripper portion; 401-a first grip tab; 402-a fender panel; 403-a first grip compression spring; 404-a first grip bearing; 405-a first grip spindle;

500-a second gripper portion; 501-a second gripper tab; 503-second grip compression spring; 504-a second gripper bearing; 505-a second grip portion spindle;

601-a first detection optocoupler; 602-a second detection optocoupler; 603-a microswitch;

701-extension spring.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model, as detailed in the appended claims.

The technical scheme provided by the preferred embodiment of the utility model relates to a gripper for reaction cups. In the related technology, most of reaction cup gripper devices for realizing the same kind of functions in the market at present adopt electromagnet devices, and electromagnets drive moving parts to realize the purpose; for example, the driving roller is driven by the telescopic motion of the electromagnet to push the swing arm mechanism, the opening and closing motion of the gripper mechanism is finally realized by the swing motion of the swing arm mechanism, the motion of the electromagnet of the driving power source has no damping buffer, the motion impact is large, the impact is easily caused to the motion of clamping the reaction cup, and the precision and the reliability of the motion are influenced. Based on this, the reaction cup gripping device provided by the technical scheme of the utility model has the advantages of simpler structure, lower cost and more reliable operation.

Fig. 1 is an exploded view schematically illustrating a structure of a gripper for reaction cups according to an embodiment of the present invention. As shown in fig. 1, the reaction cup gripping device includes a base 201, a driving device 100 is disposed on the base 201, and the reaction cup gripping device further includes: a crank 301, wherein the crank 301 is arranged at the rotating end of the driving device and reciprocates by taking the rotating end of the driving device 100 as a shaft; the first gripper portion 400 specifically includes: a first grip tab 401, the first grip tab 401 being slidably connected to the crank 301; a first rotating assembly extending upward to the first grip piece 401 and connected to the base 201, wherein the first grip rotating shaft 405 is connected to the first grip piece 401 and connected to the base 201; a microswitch 603 arranged on the first gripper plate 401; the second gripper portion 500 specifically includes: the second handle piece 501, the second handle piece 501 is connected with the crank 301 in a sliding manner; a second rotating assembly, which extends upward to the second grip piece 501 and is connected to the base 201, it should be further noted that the second grip rotating shaft 505 is connected to the second grip piece 501 and is connected to the base 201.

The driving mechanism 100 drives the crank 301 to rotate reciprocally within a certain angle, the first gripper bearing 404 disposed on the first gripper 400 slides in the first sliding slot 3011 of the crank 301, and the two grippers rotate around their respective rotating shafts, i.e., the first gripper rotating shaft 405 and the second gripper rotating shaft 505, so as to open and close the two grippers.

As shown in figure 2, the crank 2 rotates at a constant speed, and the guide rod 4 does reciprocating variable speed motion along with the swinging of the slide block 3.

As shown in fig. 3, the motion principle diagram of the first gripper unit and the second gripper unit is evolved from a crank swing guide mechanism, in which a crank a rotates reciprocally within a certain angle, and a guide b and a guide c swing reciprocally with the swing of a slider d.

According to the use requirement, the reaction cup gripper in the embodiment can be switched back and forth among three states, and the three states can be recognized by the system, so that the recognition of the three states of the reaction cup gripper is beneficial to the system to make corresponding judgment and achieve the corresponding expected target.

The three states of the reaction cup gripper device are respectively as follows: a gripper portion open state, a gripper portion closed state, and a gripper portion gripping state.

The first state: open state of the gripper portion

When the first gripper part 400 and the second gripper part 500 are opened, the left optical coupler blocking piece structure 3013 arranged on the crank 301 triggers the first detection optical coupler 601, the state of the gripper is an open state, and the gripper is considered to be normally opened after system identification;

and a second state: closed state of the gripper

When the first gripper part 400 and the second gripper part 500 are closed, the right optical coupler blocking piece structure 3014 arranged on the crank 301 mechanism triggers the second detection optical coupler 602, at this time, the state of the gripper is a closed state, also called a gripping empty state, and the gripper is considered to be normally closed after the system identifies;

and a third state: grasping state of the grasping portion

If there is a reaction cup in the tongs device, establish left opto-coupler separation blade structure 3013 and right opto-coupler separation blade structure 3014 on crank 301, neither can trigger first detection opto-coupler 601, also can not trigger second detection opto-coupler 602, the tongs is in the state of snatching this moment, can be thought to have a reaction cup in the tongs portion after the system discernment.

The first gripper portion 400 and the second gripper portion 500 can also move longitudinally along the first gripper rotation shaft 405 and the second gripper rotation shaft 505 respectively, when the whole reaction cup gripper device moves downwards to grip or place a reaction cup, if an obstacle obstructs the downward movement of the device, the reaction force pushes the two gripper portions upwards, and at this time, the micro switch 603 is triggered. When the device encounters an unexpected obstacle in the descending process, the first gripper part 400 and the second gripper part 500 move upwards along the first gripper rotating shaft 405 and the second gripper rotating shaft 505 and trigger the corresponding micro switches 603, and after being identified by the system, the system immediately performs corresponding processing to avoid causing more serious results.

Preferably, the crank 301 is provided with a first chute 3011 and a second chute 3012, the first hand-grasping piece 401 is provided with a first hand-grasping bearing 404, the first hand-grasping bearing 404 is embedded in the first chute 3011, and the first hand-grasping piece 401 rotates relative to the crank 301 when the crank reciprocates;

the second hand-grasping piece 501 is provided with a second hand-grasping bearing 504, the second hand-grasping bearing 504 is embedded in the second chute 3012, and when the crank 301 reciprocates, the second hand-grasping piece 501 rotates relative to the crank 301;

the first grip tab 401 is rotated in the opposite direction to the second grip tab 402.

Preferably, the first rotating assembly comprises: a first hand grip rotating shaft 405, wherein the first hand grip rotating shaft 405 upwards penetrates through the crank 301 and is fixedly connected with the base 201; the first handle compression spring 403 is sleeved on a part of the first handle rotating shaft 405 between the crank 301 and the base 201.

Preferably, the second rotating assembly includes: a second hand grip rotating shaft 505, wherein the second hand grip rotating shaft 505 upwards penetrates through the crank 301 and is fixedly connected with the base 201; and a second hand grip compression spring 503 sleeved on a part of the second hand grip rotating shaft 503 between the crank 301 and the base 201.

Preferably, the first gripper blade 401 is provided with an anti-collision plate 402, the base 201 is provided with a micro switch 603, the anti-collision plate 402 collides with the micro switch 603 along with the upward movement of the first gripper blade 401, and it should be further noted that when an obstacle hinders the downward movement of the reaction cup gripper, the reaction force pushes the first gripper 400 upward, and the anti-collision plate 402 triggers the micro switch 603.

Preferably, the base 201 is provided with an extension spring fixing plate 202, and the extension spring 701 is assembled on the extension spring fixing plate 202, and it should be further noted that one end of the extension spring 701 is fixed on the base 201, and the other end is fixed on the crank 301, and the function of the extension spring 701 is realized by pulling the crank 301 to rotate when the first gripper portion 400 and the second gripper portion 500 need to be closed.

Preferably, a first detection optocoupler fixing plate 204 and a second detection optocoupler fixing plate 203 are arranged on the base 201; the first detection optocoupler fixing plate 204 is provided with a first detection optocoupler 601, and the second detection optocoupler fixing plate 203 is provided with a second detection optocoupler 602.

Preferably, the crank 301 is symmetrically provided with a left optical coupler baffle structure 3013 and a right optical coupler baffle structure 3014.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model should be limited only by the attached claims.

Claims

1. The utility model provides a reaction cup tongs device, includes the base, be equipped with drive arrangement on the base, its characterized in that, reaction cup tongs device still includes:

the crank is arranged at the rotating end of the driving device and reciprocates by taking the rotating end as a shaft;

a first gripper portion comprising:

the first handle piece is connected with the crank in a sliding mode;

the first rotating assembly penetrates upwards to the first gripper piece and is connected with the base;

the micro switch is arranged on the first gripper sheet;

a second gripper portion comprising:

the second handle piece is connected with the crank in a sliding mode;

and the second rotating assembly penetrates upwards to the second hand grip piece and is connected with the base.

2. The reaction cup gripper device according to claim 1, wherein the crank is provided with a first sliding slot and a second sliding slot, the first gripper plate is provided with a first gripper bearing, the first gripper bearing is embedded in the first sliding slot, and the first gripper plate rotates relative to the crank when the crank reciprocates;

the second hand grip piece is provided with a second hand grip bearing, the second hand grip bearing is embedded in the second sliding groove, and the second hand grip piece rotates relative to the crank when the crank reciprocates;

the first gripper sheet and the second gripper sheet rotate in opposite directions.

3. A reaction cup gripper assembly as defined in claim 1 wherein said first rotating assembly comprises:

the first hand grip rotating shaft penetrates through the crank upwards and is fixedly connected with the base;

and the first hand grip compression spring is sleeved on a part of first hand grip rotating shaft between the crank and the base.

4. The reaction cup gripper assembly of claim 1, wherein the second rotating assembly comprises:

and the second hand grip compression spring is sleeved on part of the second hand grip rotating shaft between the crank and the base.

5. The reaction cup gripper device according to claim 4, wherein the first gripper plate is provided with an anti-collision plate, the base is provided with a micro switch, and the anti-collision plate moves upwards along with the first gripper plate and abuts against the micro switch.

6. The reaction cup gripper device according to claim 1, wherein the base is provided with an extension spring fixing plate, and an extension spring is assembled on the extension spring fixing plate; one end of the extension spring is fixed on the base, and the other end of the extension spring is fixed on the crank and used for pulling the crank to rotate when the first gripper portion and the second gripper portion need to be closed.

7. The reaction cup gripper device according to claim 6, wherein a first detection optocoupler fixing plate and a second detection optocoupler fixing plate are arranged on the base, the first detection optocoupler fixing plate is provided with a first detection optocoupler, and the second detection optocoupler fixing plate is provided with a second detection optocoupler.

8. The reaction cup gripper device according to claim 1, wherein the crank is symmetrically provided with a left light coupling baffle structure and a right light coupling baffle structure.