Gripper with buffer structure for pipettor detection

Abstract

The utility model discloses a pipettor detection gripper with a buffer structure, which comprises a gripper main body, a buffer seat, a gripping piece and a buffer plate, a bidirectional screw rod is arranged at the central position in the gripper main body, the two ends of the bidirectional screw rod are respectively sleeved with a movable sleeve, the bottom end of each movable sleeve is provided with a support plate, and the two ends of each support plate are respectively provided with a buffer plate. The device comprises a supporting plate, a grabbing piece is arranged on one side of the supporting plate, buffer plates are arranged on the sides, close to the supporting plate, of the grabbing piece, buffer seats are arranged on the sides, away from the buffer plates, of the supporting plate, damping pads are arranged on the sides in the buffer seats, and pressed plates are evenly arranged on one sides of the damping pads through buffer springs. According to the utility model, the gripper main body, the bidirectional screw rod, the movable sleeve, the supporting plate, the gripping piece, the buffer seat, the damping pad, the buffer spring, the pressed piece and the buffer plate are arranged, so that when the gripping piece is subjected to external impact force, part of the impact force can be absorbed, and the damage to the gripping piece and the gripped pipettor main body is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipettor detection gripper technical field, specifically is a kind of gripper with buffer structure for pipettor detection. BACKGROUND

[0002] Pipettor is a kind of precision instrument widely used in laboratory, for accurately transferring liquid between different containers, to ensure the accuracy and reliability of pipettor, need to be detected periodically, and in order to solve the accuracy low, low efficiency and other problems existing in the process of pipettor detection, pipettor automatic detection robot system arises at the historic moment, by automatically grabbing pipettor, liquid suction, liquid discharge, movement and connecting electronic balance to measure, by reading electronic balance weight change to calculate pipettor capacity, can greatly improve detection accuracy and effectiveness, and reduce detection time and labor cost.

[0003] Gripper is one of the indispensable components when pipettor is detected, its role is to automatically grab pipettor, since pipettor needs to maintain certain stability in operation process, and general gripper does not have buffer structure, it can vibrate or shake due to the direct action of external force, which can cause pipettor to be unable to accurately transfer liquid to target position, thereby introducing detection error, so a kind of gripper with buffer structure for pipettor detection is needed. UTILITY MODEL CONTENT

[0004] In view of the above problem, the present application is proposed to provide a kind of gripper with buffer structure for pipettor detection to solve the above problem.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of gripper with buffer structure for pipettor detection, including gripper main body, buffer seat, grabbing piece and buffer plate, the central position of the inside of gripper main body is provided with two-way screw rod, and the both ends of two-way screw rod are all set with movable sleeve, the bottom of movable sleeve is all provided with support plate, and the side of support plate is provided with grabbing piece, the side of grabbing piece close to support plate is all provided with buffer plate, and the side of support plate away from buffer plate is all provided with buffer seat, the side of the inside of buffer seat is all provided with damping pad, and the side of damping pad is uniformly provided with pressure plate by buffer spring, the side of pressure plate close to buffer plate is uniformly connected with buffer plate by pressure rod.

[0006] Preferably, the top of the inside of gripper main body is provided with guide slot, and the top of movable sleeve is provided with guide block.

[0007] Preferably, the central position of two-way screw rod is provided with driven gear, and the upper side of driven gear is engaged with driving gear.

[0008] Preferably, the top of the gripper body is fixed with a mounting seat, and a driving motor is arranged at the central position in the mounting seat, and the output end of the driving motor is connected with the driving gear through a roller.

[0009] Preferably, limit grooves are arranged at both sides in the buffer seat, and limit blocks are arranged at both sides of the pressure receiving plate.

[0010] Preferably, anti-skid protrusions are uniformly distributed on the inner side walls of the gripping members, and the anti-skid protrusions are all made of rubber material.

[0011] Preferably, connecting interfaces are arranged at one side of the gripping members, and plug blocks are arranged at one side of the buffer plates close to the gripping members.

[0012] Preferably, grooves are arranged at both sides of the plug blocks, and the grooves are all provided with clamping blocks through return springs, and clamping grooves are arranged at both sides in the connecting interfaces.

[0013] Preferably, the clamping blocks are all embedded into the clamping grooves, and tool insertion openings are arranged on the connecting interfaces at one side of the clamping grooves.

[0014] Preferably, pressure sensors are arranged at the central positions of one side of the plug blocks close to the connecting interfaces.

[0015] Compared with the prior art, the pipette detection gripper with the buffer structure has the advantages that the driving motor drives the driving gear to rotate, so that the driven gear and the bidirectional screw rotate, the movable sleeve, the supporting plate and the gripping member are driven to approach each other, and then the pipette body is gripped and clamped, when the gripping member is subjected to external impact force, the buffer spring can absorb part of the impact force, and disperse the impact force to the damping pad, the pressure on the unit area is reduced through the damping pad, so that the damage to the gripping member and the gripped pipette body is reduced, and in the clamping process, the buffer spring can provide stable clamping force, even if the external conditions change, the elastic deformation of the buffer spring can offset these influences to a certain extent, and the stability of the clamping force is maintained. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0017] Figure 1 It is a front view of the sectional structure of the present application.

[0018] Figure 2 For the utility model Figure 1 The enlarged structural schematic view of position A in the middle;

[0019] Figure 3 For the utility model Figure 1 The enlarged structural schematic view of position B in the middle;

[0020] Figure 4 The structural schematic view of the plug block and the connecting interface of the utility model;

[0021] Figure 5 The overhead structural schematic view of the grabbing piece of the utility model.

[0022] In the drawing: 1, the hand grip main body; 2, the movable sleeve; 3, the drive motor; 4, the mounting seat; 5, the bidirectional screw rod; 6, the support plate; 7, the buffer seat; 8, the connecting interface; 9, the grabbing piece; 10, the buffer plate; 11, the driving gear; 12, the driven gear; 13, the pressure bar; 14, the buffer spring; 15, the damping pad; 16, the pressure plate; 17, the recess; 18, the plug block; 19, the clamping block; 20, the pressure sensor; 21, the reset spring; 22, the tool insertion port; 23, the clamping groove; 24, the anti-skid protrusion. DETAILED DESCRIPTION

[0023] To make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described clearly and completely below in combination with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Please refer to Figures 1-5 The utility model provides an embodiment: a kind of hand grip with buffer structure for pipette detection, including hand grip main body 1, buffer seat 7, grabbing piece 9 and buffer plate 10, the central position of hand grip main body 1 inside is provided with bidirectional screw rod 5, and the both ends of bidirectional screw rod 5 are all equipped with movable sleeve 2, and the bottom of movable sleeve 2 is all provided with support plate 6, and the side of support plate 6 is provided with grabbing piece 9;

[0025] The central position of bidirectional screw rod 5 is provided with driven gear 12, and the upper portion of driven gear 12 is engaged with driving gear 11;

[0026] The top of hand grip main body 1 is fixed with mounting seat 4, and the central position of mounting seat 4 inside is provided with drive motor 3, and the output end of drive motor 3 is connected with driving gear 11 by roller shaft;

[0027] The gripper body 1 is connected and fixed with the pipette detection robot through the mounting seat 4, the driving motor 3 drives the driving gear 11 to rotate, so that the driven gear 12 and the bidirectional screw 5 rotate, the movable sleeve 2, the supporting plate 6 and the grabbing piece 9 are close to each other, and then the pipette body is automatically grabbed and clamped;

[0028] The top end of the gripper body 1 is provided with a guide groove, and the top of the movable sleeve 2 is provided with a guide block for guiding and limiting the movable sleeve 2;

[0029] The side of the grabbing piece 9 close to the supporting plate 6 is provided with a buffer plate 10, and the side of the supporting plate 6 away from the buffer plate 10 is provided with a buffer seat 7.

[0030] When the grabbing piece 9 is subjected to external impact force, the buffer spring 14 in the buffer seat 7 can absorb part of the impact force through its elastic characteristics, and disperse the impact force to the damping pad 15, so as to reduce the damage to the grabbing piece 9 and the grabbed pipette body by reducing the pressure on the unit area through the damping pad 15;

[0031] Moreover, during clamping, the buffer spring 14 can provide stable clamping force, and even if the external conditions change, the elastic deformation of the buffer spring 14 can offset these influences to a certain extent, so as to maintain the stability of the clamping force;

[0032] The buffer seat 7 is provided with a limiting groove on both sides, and the buffer plate 16 is provided with a limiting block on both sides, so as to limit the activity range of the buffer spring 14 and prevent it from being twisted and skewed;

[0033] The inner side wall of the grabbing piece 9 is uniformly distributed with anti-skid protrusions 24, and the anti-skid protrusions 24 are made of rubber material, which increases the friction force when grabbing the pipette body and prevents it from slipping off;

[0034] One side of the grabbing piece 9 is provided with a connecting interface 8, and the side of the buffer plate 10 close to the grabbing piece 9 is provided with an insertion block 18;

[0035] The two sides of the insertion block 18 are provided with grooves 17, and the grooves 17 are provided with clamping blocks 19 through reset springs 21, and the two sides of the connecting interface 8 are provided with clamping grooves 23, and the clamping blocks 19 are embedded in the clamping grooves 23;

[0036] When the grabbing piece 9 is installed, the insertion block 18 is inserted into the connecting interface 8, and the clamping block 19 is popped into the clamping groove 23 under the action of the reset spring 21 when passing through the clamping groove 23, so that the grabbing piece 9 and the buffer plate 10 are clamped and fixed;

[0037] The pressure sensor 20 is arranged at the central position of the insertion block 18 close to the side of the connecting interface 8, and when the insertion block 18 is connected with the connecting interface 8, the pressure sensor 20 senses the pressure signal, which can help the robot system to detect whether the grabbing piece 9 is successfully installed, so as to achieve higher accuracy.

[0038] The tool insertion port 22 is arranged on the connecting interface 8 at one side of the clamping groove 23, and when the grabbing piece 9 needs to be replaced, the operating tool can be inserted into the tool insertion port 22 outside the connecting interface 8, so that the clamping block 19 is extruded and shrunk into the recess 17, and then the connecting interface 8 can be separated from the insertion block 18, so that the grabbing piece 9 can be disassembled and replaced, and the grabbing piece 9 can be matched and installed with the suitable grabbing piece 9 of the pipette body of different specifications, and the running efficiency of the whole system will not be affected during the replacement of the grabbing piece 9, and the detection efficiency and flexibility of the robot system can be significantly improved.

[0039] The specific model and specification of the driving motor 3 and the pressure sensor 20 need to be determined according to the specification parameters of the device, and the selection calculation method is the prior art, so it will not be described in detail.

[0040] Working principle: in use, the gripper body 1 is connected and fixed with the pipette detection robot through the mounting seat 4, the driving motor 3 drives the driving gear 11 to rotate, so that the driven gear 12 and the bidirectional screw rod 5 rotate, the movable sleeve 2, the supporting plate 6 and the grabbing piece 9 are close to each other, and then the pipette body is automatically grabbed and clamped, when the grabbing piece 9 is subjected to external impact force, the buffer spring 14 in the buffer seat 7 can absorb part of the impact force through its elastic characteristics, and disperse the impact force to the damping pad 15, and reduce the pressure on the unit area through the damping pad 15, so as to reduce the damage to the grabbing piece 9 and the grabbed pipette body, and in the clamping process, the buffer spring 14 can provide stable clamping force, even if the external conditions change, the elastic deformation of the buffer spring 14 can offset these influences to a certain extent, and the stability of the clamping force is maintained, when the grabbing piece 9 needs to be replaced, the operating tool can be inserted into the tool insertion port 22 outside the connecting interface 8, so that the clamping block 19 is extruded and shrunk into the recess 17, and then the connecting interface 8 can be separated from the insertion block 18, so that the grabbing piece 9 can be disassembled and replaced, and the grabbing piece 9 can be matched and installed with the suitable grabbing piece 9 of the pipette body of different specifications, and the running efficiency of the whole system will not be affected during the replacement of the grabbing piece 9, and the detection efficiency and flexibility of the robot system can be significantly improved.

[0041] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A gripper with a buffer structure for pipette detection, characterized in that, The gripper body (1), buffer seat (7), gripping component (9), and buffer plate (10) are included. A bidirectional lead screw (5) is provided at the center of the gripper body (1), and movable sleeves (2) are provided at both ends of the bidirectional lead screw (5). A support plate (6) is provided at the bottom of each movable sleeve (2), and a gripping component (9) is provided on one side of the support plate (6). A buffer plate (10) is provided on the side of the gripping component (9) close to the support plate (6), and a buffer seat (7) is provided on the side of the support plate (6) away from the buffer plate (10). A damping pad (15) is provided on one side of the buffer seat (7), and a pressure plate (16) is provided on one side of the damping pad (15) evenly through a buffer spring (14). The pressure plate (16) is evenly connected to the buffer plate (10) on the side close to the buffer plate (10) through a pressure rod (13).

2. The gripper with a buffer structure for pipette detection according to claim 1, characterized in that: The top of the gripper body (1) is provided with a guide groove, and the top of the movable sleeve (2) is provided with a guide block.

3. A gripper with a buffer structure for pipette detection according to claim 1, characterized in that: A driven gear (12) is provided at the center of the bidirectional lead screw (5), and a driving gear (11) meshes above the driven gear (12).

4. A gripper with a buffer structure for pipette detection according to claim 3, characterized in that: The top of the gripper body (1) is fixed with a mounting base (4), and a drive motor (3) is provided in the center of the mounting base (4). The output end of the drive motor (3) is connected to the drive gear (11) through a roller.

5. A gripper with a buffer structure for pipette detection according to claim 1, characterized in that: Limiting grooves are provided on both sides of the buffer seat (7), and limiting blocks are provided on both sides of the pressure plate (16).

6. A gripper with a buffer structure for pipette detection according to claim 1, characterized in that: The inner wall of the gripper (9) is evenly distributed with anti-slip protrusions (24), and the anti-slip protrusions (24) are all made of rubber.

7. A gripper with a buffer structure for pipette detection according to claim 1, characterized in that: Each of the gripper (9) has a connection interface (8) on one side, and each of the buffer plates (10) has an insert (18) on the side near the gripper (9).

8. A gripper with a buffer structure for pipette detection according to claim 7, characterized in that: The insert (18) has grooves (17) on both sides, and the grooves (17) are equipped with locking blocks (19) by means of a reset spring (21). The connection interface (8) has slots (23) on both sides.

9. A gripper with a buffer structure for pipette detection according to claim 8, characterized in that: All the card blocks (19) are embedded in the card slots (23), and tool insertion ports (22) are provided on the connection interfaces (8) on one side of the card slots (23).

10. A gripper with a buffer structure for pipette detection according to claim 7, characterized in that: Each of the inserts (18) is equipped with a pressure sensor (20) at the center of the side near the connection interface (8).

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