CN215848243U

CN215848243U - Clamping device for automatically grabbing sample cup

Info

Publication number: CN215848243U
Application number: CN202121570199.3U
Authority: CN
Inventors: 赵鹏; 张合书; 房华; 韩玉才; 王超; 刘聪
Original assignee: Autobio Labtec Instruments Zhengzhou Co Ltd
Current assignee: Autobio Labtec Instruments Zhengzhou Co Ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-02-18
Anticipated expiration: 2031-07-12

Abstract

The utility model discloses a clamping device for automatically grabbing a sample cup, which comprises: the movable carrier plate is provided with a placing hole; the positioning plate is positioned below the transfer plate and used for supporting the sample cup; the clamping jaws are connected with the transfer board in a sliding manner and symmetrically arranged on two sides of the placing hole; two ends of the return spring are respectively connected with the transfer plate and the clamping jaw; the driving assembly comprises a lifting arm and swinging arms, and each swinging arm is an L-shaped structure formed by a vertical section and an inward bent section; when the lifting arm moves downwards along the inward-bent section of the swing arm, the clamping jaws overcome the tension of the return spring to move oppositely and clamp the sample cup; when the lifting arm moves upwards from the inward bending section to the vertical section, the clamping jaw moves back to back away from the sample cup under the action of the return spring. The utility model has the advantages of ingenious structure and convenient use, can firmly lock and clamp the sample cup, is convenient for automatically opening and closing the cover, can be integrally embedded with an in-vitro diagnostic instrument, simplifies the operation process and improves the sample detection efficiency.

Description

Clamping device for automatically grabbing sample cup

Technical Field

The utility model relates to the technical field of sample cup grabbing equipment, in particular to a clamping device for automatically grabbing sample cups.

Background

The in vitro detection, diagnosis and detection equipment is an instrument capable of qualitatively or quantitatively analyzing body fluid samples (sputum, blood and urine) of a patient, a sample pretreatment module contained in the in vitro detection, diagnosis and detection equipment is mainly used for filling digestive juice, weighing and uniformly mixing, and in the process, a sample cup needs to be clamped and fixed before the digestive juice is filled, so that a cup cover can be conveniently opened; and after the digestive juice is filled and weighed, the sample cup needs to be clamped tightly for closing the cover, so that the sample is prevented from splashing in the uniform mixing process. Because in a sample processing flow, the same sample cup needs to be clamped, opened and closed for 2 times or more, when the current manual cover opening and closing operation is adopted, time and labor are wasted, the possibility of mixing different sample cup covers exists, the sample is caused to be cross-contaminated, and the accuracy of a detection result is influenced.

Disclosure of Invention

In order to solve the above problems, the present invention provides a simple, safe and reliable clamping device for automatically grasping a sample cup, which can specifically adopt the following technical scheme:

the clamping device for automatically grabbing the sample cup comprises

The moving and carrying plate is provided with a placing hole for placing the sample cup;

the positioning plate is fixedly arranged below the transfer plate, corresponds to the placing hole and is used for supporting the sample cup;

the clamping jaws are connected with the transfer plate in a sliding mode, symmetrically arranged on two sides of the placing hole and used for clamping the sample cup;

one end of the return spring is connected with the transfer plate, and the other end of the return spring is connected with the clamping jaw;

a drive assembly comprising

A lifting arm; and

the swinging arms are symmetrically arranged on two sides of the lifting arm, and each swinging arm is of an L-shaped structure consisting of a vertical section and an inward bent section;

when the lifting arm moves downwards along the inward-bent section of the swing arm, the clamping jaws overcome the tension of the return spring to move oppositely and clamp the sample cup; when the lifting arm moves upwards from the inward bending section to the vertical section, the clamping jaw moves back to back away from the sample cup under the action of the return spring.

The lifting arm is a horizontal arm arranged below the positioning plate, and the distance between the end part of the lifting arm and the central shaft of the placing hole is equal.

The locating plate is of an I-shaped structure, a bearing block is arranged on the lifting arm, and a top opening groove matched with the connecting rod in the middle of the locating plate in a splicing mode is formed in the bearing block.

The clamping jaw has the exposed core with sample cup looks adaptation and with the trigger end that the exposed core set up relatively, each clamping jaw all through the guide rail with move the board slip and link to each other, and be provided with the non-skid protrusion on the clamping face of clamping jaw exposed core, the trigger end of clamping jaw then links to each other with return spring.

The pivot of swing arm is located vertical section, the top of vertical section correspond the setting in the outside that the clamping jaw triggered the end, vertical section with the medial surface of incurved section contacts with the tip of lifing arm all the time.

And a support for mounting a rotating shaft of the swing arm is arranged on the transfer plate.

The inner bending section of the swing arm is provided with a locking surface which is vertically connected with the lifting arm, and the locking surface is positioned at the tail end of the swing arm.

And rollers are arranged at the two ends of the lifting arm and at the top end of the swinging arm.

The moving support plate is provided with a vertical guide rod connected with the lifting arm in a sleeved mode, and the bottom of the lifting arm is connected with a screw motor.

The clamping device further comprises an inductor for detecting the rotation angle of the driving motor, the signal output end of the inductor is connected with the signal input end of the single chip microcomputer, and the control output end of the single chip microcomputer is connected with the control input end of the driving motor.

Compared with the prior art, the utility model has the following advantages:

1. the swing arm is opened and closed by moving the lifting arm up and down, the up-and-down motion is converted into horizontal motion, and the synchronous movement of the clamping jaws at two sides is realized, so that the sample cup is clamped in a centering manner, and the position precision of the sample cup during clamping is ensured;

2. when the lifting arm moves to the tail end of the swing arm, the contact surfaces of the lifting arm and the swing arm are perpendicular to each other, and position locking is achieved, so that the problems of clamping failure and sample cup toppling caused by power failure, air failure and the like after a sample cup is clamped by a traditional clamping jaw are solved;

3. the clamping face of the clamping jaw is provided with the protruding structure matched with the sample cup body, so that friction force during clamping can be increased, the phenomenon that the cup body slips when being contacted with the clamping jaw due to the influence of the external force when the upper opening and closing cover mechanism performs actions on the sample cup is prevented, and the opening and closing cover success rate is effectively improved.

In conclusion, the clamping device for automatically grabbing the sample cup provided by the utility model is ingenious in structure and convenient to use, can firmly lock and clamp the sample cup, is convenient for automatically opening and closing the cover, and prevents the sample from splashing to cause injury to medical staff; the utility model can be integrally embedded with an in-vitro diagnostic instrument, simplifies the operation process and improves the sample detection efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of the internal structure of fig. 1.

Fig. 3 is a schematic structural view of the lifting arm and the positioning plate in fig. 2.

Fig. 4 is a schematic view of the structure of the swing arm portion in fig. 2.

Figure 5 is a schematic view of the jaw portion of figure 2.

Fig. 6-8 are schematic views of the working state of the present invention.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and give detailed implementation manners and specific working procedures, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1-8, the clamping device for automatically grabbing sample cups of the present invention comprises a transfer plate 1 for placing sample cups M, wherein a placing hole adapted to the size of the sample cups M is formed on the transfer plate; a positioning plate 2 for supporting the sample cup M is arranged below the transfer plate 1, is of an I-shaped structure, is fixed with the transfer plate 1 at a certain distance, and corresponds to the placing hole; clamping jaws 3 for clamping a sample cup M are symmetrically installed on two sides of the placing hole, the two clamping jaws 3 are connected with the transfer plate 1 in a sliding mode through guide rails 4, and each clamping jaw 3 is provided with a clamping end (close to one end of the sample cup M) matched with the sample cup M and a triggering end (far away from one end of the sample cup M) opposite to the clamping end. The clamping surface of the clamping end of the clamping jaw 3 is provided with an anti-skid projection, so that the phenomenon that the sample cup M slips in the clamping jaw 3 when the cover is opened can be prevented; the trigger end of the clamping jaw 3 is connected with the transfer plate 1 through a return spring 5, and the joint driving component jointly acts on the clamping jaw 3 to realize the automatic clamping of the sample cup M.

The driving assembly comprises a lifting arm 6 positioned below the positioning plate 2, and the lifting arm is a horizontal arm with rollers mounted at two ends. The lifting arms 6 are symmetrically arranged along the central axis of the placing hole and are sleeved on a vertical guide rod 7 connected with the positioning plate 2 in a sliding manner. The lifting arm 6 is connected with a screw motor 8 below the lifting arm, and is driven by the screw motor 8 to perform lifting motion. Still install bearing block 9 on the lifing arm 6, set up the top open slot with 2 middle part connecting rods grafting adaptations of locating plate on this bearing block 9, when lifing arm 6 and bearing block 9 rise under the effect of lead screw motor 8, locating plate 2 can be crossed at the top of bearing block 9 and continue to rise, until the position of arriving with the 1 parallel and level of plate of moving, make things convenient for the tongs to place sample cup M, prevent that sample cup M from dropping under the action of gravity and locating plate 2 bumps and causing the damage.

Above-mentioned drive assembly still includes that the symmetry installs the swing arm 10 in 6 both sides of lifing arm, two swing arms 10 all link to each other with moving year board 1 through support 11, every swing arm 10 is the L shape structure that comprises vertical section and incurvated section, the pivot 12 of swing arm 10 is located vertical section, the gyro wheel is installed on the top of vertical section, it corresponds the outside that sets up in clamping jaw 3 trigger end, the medial surface of vertical section and incurvated section then contacts all the time with lifing arm 6's tip gyro wheel. When the lifting arm 6 moves downwards along the inward-bent section of the swing arm 10, the lower part of the swing arm 10 is pressed to swing outwards, the upper part of the swing arm pushes the clamping jaws 3 inwards, the two clamping jaws 3 move oppositely under the condition of overcoming the tensile force of the return spring 5, and finally the centering clamping of the sample cup M is realized; conversely, the lifting arm 6 moves upwards from the inward bending section to the vertical section, when the rollers at the two ends of the lifting arm 6 are connected with the inner wall of the vertical section, the swing arm 10 restores to the original suspension state, and at the moment, the clamping jaw 3 moves back to back under the action of the return spring 5 and leaves the sample cup M. In order to achieve a clamping lock, the end of the inward bent section of the oscillating arm 10 is provided with a locking surface which is perpendicular to the lifting arm 6 when the two are connected.

In addition, the utility model is also provided with an inductor 13 for detecting the rotation angle of the lead screw motor 8, the signal output end of the inductor 12 is connected with the signal input end of the singlechip, and the control output end of the singlechip is connected with the control input end of the lead screw motor 8. When the lifting arm 6 moves to the right position, the sensor 12 sends a signal to stop the rotation of the lead screw motor 8, so that the clamping jaw 3 is prevented from being excessively clamped.

When the sample cup M is grabbed, as shown in fig. 6, the top of the supporting block 9 is firstly made to be flush with the transfer board 1, at this time, the swing arm 10 is in a natural suspension state, the lifting arm 6 is in contact with the vertical section of the swing arm 10, and the clamping jaw 3 is in a state to be grabbed; then, the sample cup M is placed at the placing hole of the transfer plate 1 through an external gripper, a lead screw motor 8 is started, so that the lifting arm 6 moves downwards along the vertical guide rod 7, the sample cup M is driven by a bearing block 9 connected with the lifting arm 6 to move downwards along with the sample cup M until the sample cup M is contacted with the positioning plate 2, the sample cup M stays on the positioning plate 2, the part with the anti-skid grains at the bottom of the sample cup M is opposite to the clamping jaws 3 at the two sides, and the bearing block 9 continues to move downwards along with the lifting arm 6 (see fig. 7); after the lifting arm 6 enters the inward-bent section from the vertical section of the swing arm 10, the swing arm 10 makes the swing arms 10 on both sides turn outwards around the rotating shafts 12 thereof respectively under the action of the rollers at the end parts of the lifting arm 6, so that the top pulleys of the swing arms 10 push the clamping jaws 3 on the inner sides thereof to move towards the sample cup M, when the lifting arm 6 reaches the locking surface at the tail end of the inward-bent section of the swing arm 10, the contact surfaces of the two are perpendicular to each other (see fig. 8), and the clamping jaws 3 reach the moving terminal point to firmly clamp the sample cup M.

It should be noted that in the description of the present invention, terms of orientation or positional relationship such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a clamping device for sample cup is automatic to be snatched which characterized in that: the clamping device comprises

a drive assembly comprising

A lifting arm; and

2. The grip apparatus for automated specimen cup grasping according to claim 1, characterized in that: the lifting arm is a horizontal arm arranged below the positioning plate, and the distance between the end part of the lifting arm and the central shaft of the placing hole is equal.

3. The grip apparatus for automated specimen cup grasping according to claim 1, characterized in that: the locating plate is of an I-shaped structure, a bearing block is arranged on the lifting arm, and a top opening groove matched with the connecting rod in the middle of the locating plate in a splicing mode is formed in the bearing block.

4. The grip apparatus for automated specimen cup grasping according to claim 1, characterized in that: the clamping jaw has the exposed core with sample cup looks adaptation and with the trigger end that the exposed core set up relatively, each clamping jaw all through the guide rail with move the board slip and link to each other, and be provided with the non-skid protrusion on the clamping face of clamping jaw exposed core, the trigger end of clamping jaw then links to each other with return spring.

5. The grip apparatus for automated specimen cup grasping according to claim 4, characterized in that: the pivot of swing arm is located vertical section, the top of vertical section correspond the setting in the outside that the clamping jaw triggered the end, vertical section with the medial surface of incurved section contacts with the tip of lifing arm all the time.

6. The grip apparatus for automated specimen cup grasping according to claim 5, characterized in that: and a support for mounting a rotating shaft of the swing arm is arranged on the transfer plate.

7. The grip apparatus for automated specimen cup grasping according to claim 1, characterized in that: the inner bending section of the swing arm is provided with a locking surface which is vertically connected with the lifting arm, and the locking surface is positioned at the tail end of the swing arm.

8. The grip apparatus for automated specimen cup grasping according to claim 1, characterized in that: and rollers are arranged at the two ends of the lifting arm and at the top end of the swinging arm.

9. The grip apparatus for automated specimen cup grasping according to claim 1, characterized in that: the moving support plate is provided with a vertical guide rod connected with the lifting arm in a sleeved mode, and the bottom of the lifting arm is connected with a screw motor.

10. The grip apparatus for automated specimen cup grasping according to claim 1, characterized in that: the clamping device further comprises an inductor for detecting the rotation angle of the driving motor, the signal output end of the inductor is connected with the signal input end of the single chip microcomputer, and the control output end of the single chip microcomputer is connected with the control input end of the driving motor.