Self-adaptive clamping device for test tube position deviation

Abstract

The invention relates to the technical field of medical inspection equipment, in particular to a test tube position offset self-adaptive clamping device which comprises a test tube clamping assembly, a floating clamping assembly and a driving mechanism. The test tube clamping assembly comprises a first synchronous belt clamping piece, a second synchronous belt clamping piece, a synchronous belt, a synchronous wheel, a base plate, a guide rail, a guide rail right sliding block, a right clamping plate, a right clamping arm, a right clamping block, a left clamping arm and a guide rail left sliding block. The V-shaped notch of the clamping floating block is tangent to the arc surface of the test tube, the notch surface of the left clamping block can be attached to the outer circle of the test tube, concentric clamping is achieved, the problem that the test tube cannot be clamped in place due to errors and test tube displacement deviation in the production manufacturing, production assembling and debugging processes can be effectively solved, the production manufacturing precision is reduced, and the production efficiency is improved. And the assembly requirement is high.

Description

Technical Field

[0001] The invention relates to the technical field of medical testing equipment, and in particular to a device capable of adaptively clamping a test tube with position deviation. Background Art

[0002] In medical tests, it is often necessary to shake the test tube samples placed on a test tube rack, identify the test tube type, scan the barcode, etc. In an embodiment of the present invention, it is necessary to clamp the test tube on the test tube rack, move it to a designated point to shake it, rotate it and identify the barcode and test tube type on the test tube, and then put it back on the test tube rack.

[0003] Since the test tube rack and the test tube clamp move in different directions, the test tube clamp and the test tube rack on which the test tube is placed are mostly separate structures. Therefore, during the manufacturing, assembly and debugging processes, there may be a phenomenon that the position of the test tube clamp and the position of the clamped test tube are offset. When clamping the test tube, if there is a deviation between the position of the test tube clamp and the position of the clamped test tube, the test tube will deviate from the original position, and there is a risk of not being able to clamp it, which in turn affects the next step of shaking and test tube type identification. Summary of the invention

[0004] The purpose of the present invention is to provide a device for adaptively clamping test tubes with position offset, aiming to solve the problem that the test tube clamp and the test tube rack have position offset during manufacturing, assembly and debugging, which may cause the risk of not being able to clamp the test tubes, and affect the next step of shaking and identifying the test tube type.

[0005] To achieve the above-mentioned purpose, the present invention provides a device for adaptively clamping a test tube with position offset, comprising a test tube clamping assembly, a floating clamping assembly and a driving mechanism, wherein the floating clamping assembly is assembled at the bottom of the test tube clamping assembly, and the driving mechanism is assembled at one side of the test tube clamping assembly, and the test tube clamping assembly comprises a synchronous belt, a synchronous wheel, a base plate, a guide rail, a right slider of the guide rail, a right clamping plate, a right clamping arm, a right clamping block, a left clamping arm, a left slider of the guide rail, a left clamping plate and an optical coupler; the guide rail is fixedly connected to the base plate and is located at one side of the base plate, the right slider of the guide rail is slidably connected to the guide rail and is located at one side of the guide rail, the right clamping plate is fixedly connected to the right slider of the guide rail and is located at the side of the guide rail right slider away from the guide rail, and the right clamping arm is fixedly connected to the right clamping plate and is located at the right clamping block The tightening plate is away from the side of the right slider of the guide rail, the right clamping block is fixedly connected to the right clamping arm and is located on the side of the right clamping arm away from the right clamping plate, the left slider of the guide rail is with the guide rail and is located on the side of the guide rail, the left clamping plate is fixedly connected to the left slider of the guide rail and is located on the side of the left slider of the guide rail away from the guide rail, the left clamping arm is fixedly connected to the left clamping plate and is located on the side of the left clamping plate away from the left slider of the guide rail, the optical coupler is assembled on one side of the substrate, the synchronous wheel is assembled on the side of the substrate close to the guide rail, and the synchronous belt is sleeved on the outside of the synchronous wheel; the floating clamping assembly includes a clamping floating block, a left clamping block and a screw, the clamping floating block is assembled on one side of the left clamping block, the screw is threadedly connected to the clamping floating block and passes through the left clamping arm.

[0006] Wherein, the optical coupler includes an optical coupler body and a connecting piece, the connecting piece is fixedly connected to the substrate and is located on one side of the substrate, and the optical coupler body is detachably connected to the connecting piece and is located on one side of the connecting piece.

[0007] Wherein, the driving mechanism includes a motor and a locking nut, the motor is fixedly connected to the base plate and is located on the top of the base plate, and the locking nut is threadedly connected to the telescopic screw of the motor and passes through the left clamping plate.

[0008] Among them, the test tube clamping assembly also includes a first synchronous belt clamp and a second synchronous belt clamp, the first synchronous belt clamp is fixedly connected to the left clamping plate and is located on one side of the left clamping plate, and the second synchronous belt clamp is fixedly connected to the right clamping plate and is located on one side of the right clamping plate.

[0009] Wherein, the motor is driven based on the algorithm and control program logic in the controller, so that the clamping speed and strength of the right clamping arm and the left clamping arm are rapid and stable.

[0010] The present invention provides a device for adaptively clamping a test tube with position offset, wherein the substrate provides support and installation conditions for other components, the right clamping plate is used to connect the right slider of the guide rail and the right clamping arm, and similarly, the left clamping plate is also used to connect the left slider of the guide rail and the left clamping arm, and the right slider of the guide rail and the left slider of the guide rail slide on the guide rail to realize the synchronous opening and closing of the left clamping arm and the right clamping arm in opposite directions or the synchronous closing of the left clamping arm and the right clamping arm, specifically, the driving mechanism drives the left clamping plate to pull the synchronous belt so that the right clamping arm and the left clamping arm are linked, that is, the synchronous opening and closing of the left clamping arm and the right clamping arm in opposite directions or the synchronous closing of the left clamping arm and the right clamping arm are realized, thereby realizing the function of clamping and releasing the test tube, and the speed and distance of the opening and closing of the left clamping arm and the right clamping arm are determined by detecting the initial position of the optical coupler and the left clamping plate, so as to detect the trigger by blocking the optical coupler to generate high and low levels, and cooperate with the driving mechanism to realize The clamping force can be adapted to the size of the test tube by running at a certain number of steps and speed. The clamping floating block is embedded or snapped into the circular hole of the left clamping block. The pin hole diameters on the left and right sides of the floating block are smaller than the circular hole of the left clamping block. Therefore, the clamping floating block can move left and right inside the left clamping block, and shake up and down, and can achieve a certain angle of shaking in the X, Y, and Z axis directions in three-dimensional space. Specifically, the clamping floating block can float left and right and up and down in the process of clamping and tightening the test tube, so that the V-shaped notch of the clamping floating block is tangent to the arc surface of the test tube, and the notch surface of the left clamping block can fit the outer circle of the test tube to achieve concentric clamping. This can effectively solve the problem of inadequate clamping of the test tube caused by errors in production, assembly, and debugging, and test tube displacement deviations, reduce production and manufacturing precision, and high assembly requirements, effectively improve installation efficiency and reduce production and manufacturing and manual assembly costs, and during instrument operation, it also improves the overall reliability of the instrument. It increases added value for enterprises and instruments and makes them more competitive. It solves the problem of position offset between test tube clamps and test tube racks during manufacturing, assembly and debugging, which leads to the risk of not being able to clamp the test tubes, affecting the next step of shaking and identifying the test tube type. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 The present invention is a schematic structural diagram of a device for adaptively clamping a test tube with position deviation.

[0013] Figure 2 It is an exploded view of the floating support block assembly.

[0014] Figure 3 It is the floating change of the front, back, left and right angles of the floating clamping component.

[0015] Figure 4 It is a schematic diagram of the test tube clamp assembly in a test tube releasing state.

[0016] Figure 5 It is a schematic diagram of the test tube clamping assembly in a state of clamping the test tube.

[0017] Figure 6 It is a schematic diagram of the floating clamping component adaptively sliding to a position with the same arc center as the test tube to achieve clamping of the test tube.

[0018] Figure 7 It is a schematic diagram showing that the notched surface of the floating clamping assembly fits the outer circumference of the test tube to achieve concentric clamping thereof.

[0019] In the figure: 1-test tube clamping assembly, 2-floating clamping assembly, 3-driving mechanism, 4-synchronous belt, 5-synchronous wheel, 6-base plate, 7-guide rail, 8-guide rail right slider, 9-right clamping plate, 10-right clamping arm, 11-right clamping block, 12-left clamping arm, 13-guide rail left slider, 14-left clamping plate, 15-optical coupler, 16-optical coupler body, 17-connecting piece, 18-motor, 19-locking nut, 20-first synchronous belt clip, 21-second synchronous belt clip, 22-clamping floating block, 23-left clamping block, 24-screw. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] See also Figures 1 to 7The present invention provides a device for adaptively clamping a test tube with position deviation, comprising a test tube clamping assembly 1, a floating clamping assembly 2 and a driving mechanism 3, wherein the floating clamping assembly 2 is assembled at the bottom of the test tube clamping assembly 1, and the driving mechanism 3 is assembled at one side of the test tube clamping assembly 1, and the test tube clamping assembly 1 comprises a synchronous belt 4, a synchronous wheel 5, a base plate 6, a guide rail 7, a guide rail right slider 8, a right clamping plate 9, a right clamping arm 10, a right clamping block 11, a left clamping arm 12, a guide rail left slider 13, a left clamping plate 14 and an optical coupler 15; the guide rail 7 is fixedly connected to the base plate 6 and is located at one side of the base plate 6, the guide rail right slider 8 is slidably connected to the guide rail 7 and is located at one side of the guide rail 7, the right clamping plate 9 is fixedly connected to the guide rail right slider 8 and is located at a side of the guide rail right slider 8 away from the guide rail 7, and the right clamping arm 10 is fixedly connected to the right clamping plate 9 and is located at a side of the right clamping plate 9 away from the guide rail right slider 8 On one side, the right clamping block 11 is fixedly connected to the right clamping arm 10 and is located on the side of the right clamping arm 10 away from the right clamping plate 9, the left guide rail slider 13 is slidably connected to the guide rail 7 and is located on the side of the guide rail 7, the left clamping plate 14 is fixedly connected to the left guide rail slider 13 and is located on the side of the left guide rail slider 13 away from the guide rail 7, the left clamping arm 12 is fixedly connected to the left clamping plate 14 and is located on the side of the left clamping plate 14 away from the left guide rail slider 13, the optical coupler 15 is assembled on one side of the substrate 6, the synchronous wheel 5 is assembled on the side of the substrate 6 close to the guide rail 7, and the synchronous belt 4 is sleeved on the outside of the synchronous wheel 5; the floating clamping assembly 2 includes a clamping floating block 22, a left clamping block 23 and a screw 24, the clamping floating block 22 is assembled on one side of the left clamping block 23, the screw 24 is threadedly connected to the clamping floating block 22 and passes through the left clamping arm 12.

[0022] In the embodiment of the present invention, the base plate 6 provides support and installation conditions for the remaining components, the right clamping plate 9 is used to connect the guide rail right slider 8 and the right clamping arm 10, and similarly, the left clamping plate 14 is also used to connect the guide rail left slider 13 and the left clamping arm 12, and the guide rail right slider 8 and the guide rail left slider 13 slide on the guide rail 7 to realize the opening of the left clamping arm 12 and the right clamping arm 10 in synchronous reverse operation or synchronous closing in opposite directions. Specifically, the motor 1 of the driving mechanism 3 is driven by the motor 1 The telescopic screw on 8 moves forward and backward to drive the left clamping plate 14 to pull the synchronous belt 4, so that the right clamping arm 10 is linked with the left clamping arm 12, that is, the left clamping arm 12 and the right clamping arm 10 are opened synchronously in the opposite direction or closed synchronously in the opposite direction, thereby realizing the function of clamping and releasing the test tube. The speed and distance of the opening and closing of the left clamping arm 12 and the right clamping arm 10 are determined by the optical coupler 15 and the left clamping plate 14 to detect the initial position, so as to block the optical coupler 15 to generate high and low levels to detect The clamping floating block 22 is embedded or snapped into the circular hole of the left clamping block 23, and the pin hole diameters on the left and right sides of the floating block 22 are smaller than the circular hole of the left clamping block 23. Therefore, the clamping floating block 22 can move left and right inside the left clamping block 23, and shake up and down, and can achieve a certain angle of shaking in the X, Y, and Z axis directions in three-dimensional space. Specifically, the clamping floating block 22 is used to clamp and tighten the test tube. During the process, it can float left and right, up and down, so that the V-shaped notch of the clamping floating block 22 is tangent to the arc surface of the test tube, and the notch surface of the left clamping block 23 can fit the outer circle of the test tube to achieve concentric clamping. It can effectively solve the problem of inadequate clamping of test tubes caused by errors in production, assembly and debugging, and test tube displacement deviation, reduce production and manufacturing precision, and assemble high requirements, effectively improve installation efficiency and reduce production and manual assembly costs, and improve the overall reliability of the instrument during operation. It increases added value for enterprises and instruments and makes them more competitive, and solves the problem of position offset between test tube clamps and test tube racks during manufacturing, assembly and debugging, and the risk of not being able to clamp, which affects the next step of shaking and test tube type identification.

[0023] Furthermore, the optical coupler 15 includes an optical coupler body 16 and a connecting member 17 , wherein the connecting member 17 is fixedly connected to the substrate 6 and is located at one side of the substrate 6 , and the optical coupler body 16 is detachably connected to the connecting member 17 and is located at one side of the connecting member 17 .

[0024] In the embodiment of the present invention, the connecting member 17 is assembled on the substrate 6 to provide an installation place for the optocoupler body 16. The initial position is detected and determined by the optocoupler body 16 and the left clamping plate 14, so as to block the optocoupler body 16 from generating high and low levels to detect the trigger, and cooperate with the driving mechanism 3 to achieve a certain number of steps and speed operation, so as to adapt the clamping force to the size of the test tube and protect the test tube from being crushed.

[0025] Furthermore, the driving mechanism 3 includes a motor 18 and a locking nut 19 . The motor 18 is fixedly connected to the base plate 6 and is located at the top of the base plate 6 . The locking nut 19 is threadedly connected to the telescopic screw of the motor 18 and passes through the left clamping plate 14 .

[0026] In the embodiment of the present invention, the motor 18 is installed on the base plate 6, and the motor 18 has a telescopic screw. The left clamping plate 14 and the telescopic screw of the motor 18 are fixed by the locking nut 19. After the motor 18 is powered on, the telescopic screw can move forward and backward, thereby realizing the forward and backward movement of the left clamping plate 14. Under the action of the synchronous belt 4, the right clamping plate 9 also runs in the opposite direction to the left clamping plate 14.

[0027] Furthermore, the test tube clamping assembly 1 also includes a first synchronous belt clamp 20 and a second synchronous belt clamp 21, the first synchronous belt clamp 20 is fixedly connected to the left clamping plate 14 and is located on one side of the left clamping plate 14, and the second synchronous belt clamp 21 is fixedly connected to the right clamping plate 9 and is located on one side of the right clamping plate 9.

[0028] In the embodiment of the present invention, the upper end of the synchronous belt 4 is pressed by the second synchronous belt clip 21 and locked with the right clamping plate 9. Similarly, the lower end of the synchronous belt 4 is pressed by the first synchronous belt clip 20 and locked with the left clamping plate 14 to prevent the synchronous belt 4 from falling off the synchronous wheel 5. At the same time, the left clamping plate 14 can pull the synchronous belt 4 to move, so that the right clamping plate 9 also runs in the opposite direction to the left clamping plate 14.

[0029] To better understand the present technical solution, the following embodiments are provided for further explanation:

[0030] The clamping and releasing of the whole system are determined by the operation of the motor 18, which is controlled by the controller algorithm and program to achieve a certain number of steps and speed. In clamping test tubes, since there are many types of test tubes with different diameters, the motor 18 can provide feedback of a certain frequency and number of steps through the controller. After detecting a certain clamping force, the motor 18 can stop moving and will not continue to clamp, thus protecting the test tube from being crushed. Figure 4 To release the test tube, Figure 5 The test tube is clamped.

[0031] The causes of deviation during the gripping process and the principles that this structure can solve:

[0032] When clamping the test tube on the test tube rack, during assembly and debugging, due to the existence of comprehensive factors such as processing error, assembly error, and debugging error, it is difficult for the left clamping arm 12 and the right clamping arm 10 to be theoretically parallel and aligned, and the upper and lower positions and left and right positions of the left clamping block 23 and the right clamping block 11 may be inconsistent. The arc clamp test tube on the left clamping block 23 and the right clamping block 11 is not at the center of the test tube clamp, but because the floating block can achieve micro-motion at any angle in space, when the left clamping block 23 and the right clamping block 11 are closed, the floating clamping assembly 2 will adaptively slide to the position of the same arc center as the test tube to achieve clamping of the test tube. Figure 6 shown.

[0033] Another major deviation is that the test tube is not in the designated clamping position, and there is a deviation from the designated clamping position. In most of our medical equipment, the test tube is placed on a test tube rack, and the test tube rack is pushed to move by a motion mechanism to achieve the movement of the test tube. During the movement, the displacement position of the test tube rack is affected by program control, friction resistance, processing and assembly errors and other factors, so it is necessary to have a very precise positioning mechanism and program control monitoring feedback, which consumes a lot of processing costs, assembly personnel and other costs. When the test tube deviates, the clamping floating block 22 can float left and right, up and down during the clamping and tightening process, and the V-shaped notch is tangent to the arc surface of the test tube, so that the notch surface of the floating clamping assembly 2 can fit the outer circle of the test tube to achieve its concentric clamping, such as Figure 7 shown.

[0034] The above disclosure is only a preferred embodiment of a device for adaptively clamping a test tube position offset of the present invention. Of course, this cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention are still within the scope of the invention.

Claims

1. A device for adaptively clamping a test tube with position deviation, characterized in that: It includes a test tube clamping assembly, a floating clamping assembly and a driving mechanism, wherein the floating clamping assembly is assembled at the bottom of the test tube clamping assembly, and the driving mechanism is assembled at one side of the test tube clamping assembly. The test tube clamping assembly includes a synchronous belt, a synchronous wheel, a base plate, a guide rail, a right slider of the guide rail, a right clamping plate, a right clamping arm, a right clamping block, a left clamping arm, a left slider of the guide rail, a left clamping plate and an optical coupler; The guide rail is fixedly connected to the base plate and is located on one side of the base plate, the guide rail right slider is slidably connected to the guide rail and is located on one side of the guide rail, the right clamping plate is fixedly connected to the guide rail right slider and is located on the side of the guide rail right slider away from the guide rail, the right clamping arm is fixedly connected to the right clamping plate and is located on the side of the right clamping plate away from the guide rail right slider, the right clamping block is fixedly connected to the right clamping arm and is located on the side of the right clamping arm away from the right clamping plate, the guide rail left slider is connected to the guide rail and is located on one side of the guide rail, the left clamping plate is fixedly connected to the guide rail left slider and is located on the side of the guide rail left slider away from the guide rail, the left clamping arm is fixedly connected to the left clamping plate and is located on the side of the left clamping plate away from the guide rail left slider, the optical coupler is assembled on one side of the base plate, the synchronous wheel is assembled on the side of the base plate close to the guide rail, and the synchronous belt is sleeved on the outer side of the synchronous wheel; The floating clamping assembly comprises a clamping floating block, a left clamping block and a screw. The clamping floating block is assembled on one side of the left clamping block. The screw is threadedly connected with the clamping floating block and passes through the left clamping arm.

2. The device for adaptively clamping a test tube according to claim 1, characterized in that: The optical coupler comprises an optical coupler body and a connecting piece, wherein the connecting piece is fixedly connected to the substrate and is located at one side of the substrate, and the optical coupler body is detachably connected to the connecting piece and is located at one side of the connecting piece.

3. The device for adaptively clamping a test tube according to claim 1, characterized in that: The driving mechanism comprises a motor and a locking nut. The motor is fixedly connected to the base plate and is located on the top of the base plate. The locking nut is threadedly connected to the telescopic screw of the motor and passes through the left clamping plate.

4. The device for adaptively gripping a test tube according to claim 1, characterized in that: The test tube clamping assembly also includes a first synchronous belt clamp and a second synchronous belt clamp, the first synchronous belt clamp is fixedly connected to the left clamping plate and is located on one side of the left clamping plate, and the second synchronous belt clamp is fixedly connected to the right clamping plate and is located on one side of the right clamping plate.

5. The device for adaptively gripping a test tube according to claim 3, characterized in that: The motor is driven based on the algorithm and control program logic in the controller, so that the clamping speed and strength of the right clamping arm and the left clamping arm are rapid and stable.

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