Test tube clamping device capable of adjusting clamping force

Abstract

The utility model provides a test tube clamping device capable of adjusting clamping force, which is applied to the technical field of test tube clamping devices, and is characterized by comprising a fixing frame and an opening and closing driving assembly arranged on the fixing frame; the clamping jaw assembly is movably arranged on the fixing frame, the clamping jaw assembly comprises a lifting rod connected to the fixing frame in a sliding mode and a plurality of clamping jaws connected with the lifting rod, and the opening and closing driving assembly drives the lifting rod to ascend and descend and drives the clamping jaws to be close to or separated from one another so as to achieve opening and closing of the clamping jaw assembly; the adjusting assembly is arranged on the fixing frame and used for adjusting the clamping force of the clamping jaw assembly; compared with the prior art, the test tube grabbing device has the technical effects that the height of the second connecting frame can be adjusted through the adjusting screw rod by screwing the adjusting handle, so that the initial height of the lifting rod can be adjusted, the initial position of the guide wheel in the guide groove can be adjusted, the clamping force can be adjusted, and test tubes with different tube diameters can be grabbed.

Description

Technical Field

[0001] This utility model relates to the technical field of test tube clamping devices, and in particular to a test tube clamping device with adjustable clamping force. Background Technology

[0002] In the fields of laboratory, medical and industrial testing, test tubes are a common sample container and usually need to be held and transported by clamping devices.

[0003] Currently, Chinese utility model patent CN215394776U discloses a clamping mechanism for holding blood sample tubes, comprising: a mounting body having a first mounting groove having a first sidewall; a first clamping assembly including a first clamping member, a first elastic member, a first driving member, and a first elastic pad, the first clamping member having a first mounting end disposed in the first mounting groove, the first mounting end including a first side surface spaced apart from and opposite to the first sidewall, and a second side surface opposite to the first side surface, the first elastic member abutting between the first side surface and the first sidewall, the first elastic pad being disposed on the second side surface, the first driving member having a first telescopic shaft fixedly connected to the first elastic pad; and a second clamping assembly including a second clamping member spaced apart from and opposite to the first clamping member.

[0004] However, existing clamping devices are only designed for test tubes of a fixed diameter. When handling test tubes of different diameters, it is necessary to replace them with special clamps or adjust the mechanical structure, which makes the operation cumbersome, inefficient, and difficult to adapt to the mixed use of test tubes of various sizes. Utility Model Content

[0005] The purpose of this invention is to provide a test tube clamping device with adjustable clamping force, which has the advantage of being able to adapt to test tubes of various specifications by adjusting the clamping force.

[0006] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0007] An adjustable clamping force test tube clamping device includes a fixing frame.

[0008] The tension-closing drive assembly is mounted on a fixed frame;

[0009] A gripper assembly is movably mounted on a fixed frame. The gripper assembly includes a lifting rod slidably connected to the fixed frame and several grippers connected to the lifting rod. The opening and closing drive assembly drives the lifting rod to rise and fall and causes the several grippers to move closer or separate to realize the opening and closing of the gripper assembly.

[0010] And an adjustment component mounted on the fixed frame for adjusting the clamping force of the gripper assembly.

[0011] In one embodiment of the present invention, the opening and closing drive assembly includes an opening and closing drive member fixed on a fixed frame, a first connecting frame connected to the actuating end of the opening and closing drive member and vertically slidably connected to the fixed frame, and a second connecting frame connected to the lifting rod and vertically slidably connected to the fixed frame.

[0012] The adjustment component is used to adjust the distance between the second connecting frame and the first connecting frame.

[0013] In one embodiment of the present invention, an origin sensor is fixedly mounted on the fixing frame, and an origin sensing plate that cooperates with the origin sensor is fixedly mounted on the first connecting frame.

[0014] An endpoint sensor is fixedly mounted on the fixed frame, and an endpoint sensing plate that cooperates with the endpoint sensor is fixedly mounted on the second connecting frame.

[0015] In one embodiment of the present invention, the adjustment assembly includes an adjustment rod movably connected to a first connecting frame, an adjustment handle fixed to the upper end of the adjustment rod, and an elastic member sleeved on the adjustment rod and located between the adjustment handle and the first connecting frame;

[0016] An adjusting screw is integrally formed at the bottom of the adjusting rod, and the adjusting screw is threadedly connected to the second connecting frame.

[0017] In one embodiment of the present invention, the fixing frame is provided with a mounting frame, and a plurality of grippers are horizontally slidably connected to the mounting frame;

[0018] A guide frame is fixedly installed at the bottom of the lifting rod, and several guide wheels are rotatably connected to the guide frame; guide grooves are inclinedly opened on several grippers; the lifting rod rises and falls, driving the guide wheels to roll in the guide grooves to drive the grippers to slide horizontally on the mounting frame.

[0019] In one embodiment of this utility model, the outer end of the guide groove is higher than the inner end.

[0020] In one embodiment of the present invention, a rotating component for driving the gripper assembly to rotate is also included;

[0021] The rotating assembly includes a rotating drive component fixed on a fixed frame and a transmission belt structure connected to the moving end of the rotating drive component and used to drive the mounting frame to rotate on the fixed frame.

[0022] The lifting rod is rotatably connected to the second connecting frame.

[0023] In one embodiment of the present invention, a sensing disc is fixedly connected to the mounting bracket, and a rotation sensor that cooperates with the sensing disc is fixedly disposed on the mounting bracket. A notch is provided on the sensing disc.

[0024] As described above, the adjustable clamping force test tube clamping device of this utility model has the following beneficial effects:

[0025] 1. The opening and closing drive component is used to drive the lifting rod to rise and fall, thereby driving the guide wheel to roll in the guide groove to drive the gripper to slide horizontally on the mounting frame. Several grippers move closer to each other or separate, thereby realizing the automatic gripping of test tubes.

[0026] 2. The adjustment component is used to adjust the distance between the second connecting frame and the first connecting frame. By turning the adjustment handle, the height of the second connecting frame can be adjusted by adjusting the screw, thereby adjusting the starting height of the lifting rod and the starting position of the guide wheel in the guide groove, thus adjusting the clamping force and enabling the gripping of test tubes of different diameters.

[0027] 3. The rotating component can be used to drive the mounting bracket to rotate and drive the gripper to rotate, so that the gripper can perform barcode scanning or positioning functions on the test tube while gripping the test tube. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0029] Figure 2 This is a front view of the overall structure of an embodiment of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the opening and closing drive assembly according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the mounting bracket according to an embodiment of the present utility model;

[0032] Figure 5 This is a schematic diagram of the gripper assembly according to an embodiment of the present invention.

[0033] Reference numerals: 1. Fixing frame; 2. Opening and closing drive assembly; 21. Opening and closing drive component; 22. First connecting frame; 23. Second connecting frame; 24. Origin sensor; 25. Origin sensing plate; 3. Gripper assembly; 31. Lifting rod; 32. Gripper; 33. Mounting frame; 34. Guide frame; 35. Guide wheel; 36. Guide groove; 4. Adjustment assembly; 41. Adjustment rod; 42. Adjustment handle; 43. Elastic element; 44. Adjustment screw; 5. Rotation assembly; 51. Rotation drive component; 52. Transmission belt structure; 6. Sensing disc; 7. Rotation sensor; 8. First guide rail; 9. Second guide rail. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0035] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0036] Please see Figure 1 and Figure 2 This utility model provides a test tube clamping device with adjustable clamping force, including a fixed frame 1, an opening and closing drive assembly 2, a gripper assembly 3, an adjustment assembly 4, and a rotation drive assembly. The gripper assembly 3 includes a lifting rod 31 slidably connected to the fixed frame 1 and a plurality of grippers 32 connected to the lifting rod 31. The opening and closing drive assembly 2 drives the lifting rod 31 to rise and fall and drives the plurality of grippers 32 to move closer or separate to realize the opening and closing of the gripper assembly 3. The adjustment assembly 4 is used to adjust the clamping force of the gripper assembly 3. The rotation drive assembly drives the gripper assembly 3 to rotate.

[0037] The tension-opening drive assembly 2 includes a tension-opening drive component 21, a first connecting frame 22, and a second connecting frame 23. In this embodiment, the tension-opening drive component 21 can be a screw motor bolted to the fixed frame 1, and the first connecting frame 22 is threaded to the screw of the screw motor. The lifting rod 31 is rotatably connected to the second connecting frame 23 via a bearing. The fixed frame 1 is vertically bolted to a first guide rail 8, and both the first connecting frame 22 and the second connecting frame 23 are vertically slidably connected to the first guide rail 8, with the first connecting frame 22 located directly above the second connecting frame 23.

[0038] Please see Figure 3The adjusting component 4 is used to adjust the distance between the second connecting frame 23 and the first connecting frame 22. The adjusting component 4 includes an adjusting rod 41, an adjusting handle 42, and an elastic element 43. The adjusting rod 41 is movably connected to the first connecting frame 22. The upper end of the adjusting rod 41 is integrally formed with the adjusting handle 42. An elastic element 43 is sleeved on the adjusting rod 41 between the adjusting handle 42 and the first connecting frame 22. In this embodiment, the elastic element 43 can be a spring. The two ends of the spring abut against the first connecting frame 22 and the adjusting handle 42, respectively. Under the action of the spring, even when the power is off, the test tube will not fall off the clamp 32. An adjusting screw 44 is integrally formed at the bottom of the adjusting rod 41. The adjusting screw 44 is threadedly connected to the second connecting frame 23. Since the adjusting screw 44 is threadedly connected to the second connecting frame 23, the height of the second connecting frame 23 can be adjusted by turning the adjusting handle 42.

[0039] This allows for adjustment of the starting height of the lifting rod 31 and the starting position of the guide wheel 35 within the guide groove 36, thereby adjusting the clamping force and enabling the gripping of test tubes of different diameters.

[0040] Please see Figure 1 and Figure 2 The origin sensor 24 is bolted on the top of the fixed frame 1, and the origin sensing plate 25 that cooperates with the origin sensor 24 is bolted on the first connecting frame 22; there is no need to calculate the rotation parameters of the lead screw motor, the test tube can be clamped simply by returning to the origin (the origin sensing plate 25 moves to the position of the origin sensor 24);

[0041] The upper and lower parts of the fixed frame 1 are bolted with an end point sensor, and the second connecting frame 23 is bolted with an end point sensing plate that cooperates with the end point sensor; the end point sensing plate cooperates with the end point sensor to limit the descent height of the lifting rod 31; thereby limiting the opening width of the gripper 32.

[0042] Please see Figure 4 and Figure 5 The bottom of the fixed frame 1 is rotatably connected to the mounting frame 33. Several second slide rails corresponding to several grippers 32 are fixed on the mounting frame 33 by horizontal bolts. Several grippers 32 are horizontally slidably connected to several second slide rails respectively.

[0043] A guide frame 34 is welded and fixed to the bottom of the lifting rod 31. Several guide wheels 35 are rotatably connected to the guide frame 34. Several grippers 32 are inclinedly provided with guide grooves 36. The outer end of the guide groove 36 is set at a higher height than the inner end. The lifting rod 31 can drive the guide wheels 35 to roll in the guide grooves 36 to drive the grippers 32 to slide horizontally left and right on the mounting frame 33. Several grippers 32 move closer to each other or separate, thereby realizing the automatic gripping of test tubes.

[0044] Please see Figure 1 and Figure 2 The rotating assembly 5 includes a rotating drive component 51 and a transmission belt structure 52. In this embodiment, the rotating drive component 51 can be a rotary motor, which is bolted to the fixed frame 1. The transmission belt structure 52 includes a drive pulley fixedly connected to the output shaft of the rotary motor, a driven pulley fixedly connected to the mounting frame 33, and a transmission belt sleeved on the drive pulley and the driven pulley. The rotary motor drives the transmission belt to drive the mounting frame 33 to rotate and connect to the fixed frame 1.

[0045] A sensing disc 6 is fixedly connected to the mounting bracket 33, and a rotation sensor 7 that cooperates with the sensing disc 6 is fixedly installed on the mounting bracket 1. A notch is opened on the sensing disc 6.

[0046] The rotating component 5 can be used to drive the mounting bracket 33 to rotate and drive the gripper 32 to rotate, so that the gripper 32 can perform barcode scanning or positioning functions while gripping the test tube.

[0047] Brief description of the usage process: The lead screw motor drives the first connecting frame 22 to move downward and moves the origin sensing plate 25 away from the origin sensor 24. The first connecting frame 22 drives the second connecting frame 23 to move together. The second connecting frame 23 drives the lifting rod 31 to move downward. At this time, the guide wheel 35 moves toward the inner end of the guide groove 36. Under the action of the guide wheel 35 and the guide groove 36, several grippers 32 are separated, thereby opening the gripper assembly 3, which makes it easier to pick up and grab the test tube.

[0048] When clamping, the lead screw motor drives the first connecting frame 22 to move upward and drives the origin sensing plate 25 back to the position of the origin sensor 24. All components move in the opposite direction, and the gripper assembly 3 closes, thereby clamping the test tube.

[0049] The clamping force of the gripper assembly 3 can be adjusted by turning the adjustment handle 42; when rotation is required, the rotary motor rotates, driving the gripper 32 to rotate, thus realizing the rotation of the test tube.

[0050] In summary, this invention utilizes the high thrust of a lead screw motor and the compressibility of a spring to achieve a large clamping effect with a relatively small motor. Compared to traditional clamping mechanisms, which only require rotating a handle to adjust the clamping force without setting motor parameters, this solution is compact, easy to install, low in cost, and convenient to debug. It does not require calculating the rotation parameters of the clamping motor; simply returning to the origin is sufficient. Even in the event of a power outage, the test tubes will not fall due to the spring's action. Furthermore, because it uses spring clamping, it can grasp test tubes of different diameters. The rotating motor can simultaneously perform barcode scanning and positioning functions on the test tubes. Increasing the motor's driving force can also enable the opening and closing of test tube caps. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial application value.

[0051] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A test tube holder device capable of adjusting a clamping force, characterized by: Including the mounting bracket (1), Tension-opening drive assembly (2), which is mounted on the fixed frame (1); The gripper assembly (3) is movably mounted on the fixed frame (1). The gripper assembly (3) includes a lifting rod (31) slidably connected to the fixed frame (1) and a number of grippers (32) connected to the lifting rod (31). The opening and closing drive assembly (2) drives the lifting rod (31) to rise and fall and drives the number of grippers (32) to move closer to each other or separate to realize the opening and closing of the gripper assembly (3). And an adjusting component (4) provided on the fixed frame (1) for adjusting the clamping force of the gripper assembly (3).

2. The force-adjustable test tube holder according to claim 1, characterized in that: The tensioning and opening drive assembly (2) includes a tensioning and opening drive component (21) fixed on a fixed frame (1), a first connecting frame (22) connected to the actuating end of the tensioning and opening drive component (21) and vertically slidably connected to the fixed frame (1), and a second connecting frame (23) connected to the lifting rod (31) and vertically slidably connected to the fixed frame (1). The adjustment component (4) is used to adjust the distance between the second connecting frame (23) and the first connecting frame (22).

3. The force-adjustable test-tube holder according to claim 2, characterized in that: The fixed frame (1) is fixedly provided with an origin sensor (24), and the first connecting frame (22) is fixedly provided with an origin sensing plate (25) that cooperates with the origin sensor (24); An endpoint sensor is fixedly mounted on the fixed frame (1), and an endpoint sensing plate that cooperates with the endpoint sensor is fixedly mounted on the second connecting frame (23).

4. The force-adjustable test-tube holder according to claim 2, characterized in that: The adjustment assembly (4) includes an adjustment rod (41) movably connected to the first connecting frame (22), an adjustment handle (42) fixed to the upper end of the adjustment rod (41), and an elastic element (43) sleeved on the adjustment rod (41) and located between the adjustment handle (42) and the first connecting frame (22); The bottom of the adjusting rod (41) is integrally formed with an adjusting screw (44), which is threadedly connected to the second connecting frame (23).

5. The force-adjustable test-tube holder according to claim 1, characterized in that: The fixed frame (1) is provided with a mounting frame (33), and a number of grippers (32) are horizontally slidably connected to the mounting frame (33); The bottom of the lifting rod (31) is fixedly provided with a guide frame (34), and a number of guide wheels (35) are rotatably connected to the guide frame (34); a number of grippers (32) are all inclinedly provided with guide grooves (36); the lifting rod (31) rises and falls and drives the guide wheels (35) to roll in the guide grooves (36) to drive the grippers (32) to slide horizontally on the mounting frame (33).

6. The force-adjustable test-tube holder according to claim 5, characterized in that: The outer end of the guide groove (36) is higher than the inner end.

7. The adjustable force clamping test tube clamp of claim 5, wherein: It also includes a rotating component (5) that drives the gripper assembly (3) to rotate; The rotating assembly (5) includes a rotating drive (51) fixed on the fixed frame (1) and a transmission belt structure (52) connected to the moving end of the rotating drive (51) and used to drive the mounting frame (33) to rotate on the fixed frame (1). The lifting rod (31) is rotatably connected to the second connecting frame (23).

8. The force-adjustable test-tube holder according to claim 7, characterized in that: The mounting frame (33) is fixedly connected with an induction disc (6), the fixed frame (1) is fixedly provided with a rotation sensor (7) matched with the induction disc (6), and the induction disc (6) is provided with a notch.

Images