Clamping tool

Abstract

The utility model provides a clamping tool which is applied to guide rail installation of a gene sequencer, a first abutting block and a second abutting block of the clamping tool are movably arranged on a sliding rail in a sleeving mode, a locking device can lock the first abutting block to the sliding rail, and a force application device can apply abutting force with the set magnitude to a second guide rail. When the guide rails are fixed to the bearing table, the first abutting block and the second abutting block can clamp the guide rails located on the two sides of the bearing table. Under the action of the sliding rail and the locking device, the clamping force applied to the two guide rails by the first abutting block and the second abutting block is equal, and the consistency of the surface difference between the two guide rails and the bearing table is improved; the surface difference consistency between different parts of the same guide rail and the bearing table can be improved by adjusting different positions of the guide rail clamped by the clamping tool; in addition, the same abutting force can be applied by arranging a force application device, and the surface difference consistency of the guide rails and the bearing tables of the gene sequencers produced in batches is improved.

Description

Technical Field

[0001] The present application relates to the technical field of special tools, and in particular to a clamping tool. Background Art

[0002] The high-precision motion system of the gene sequencer is a key part to ensure accuracy and repeatability during the sequencing process. For the high-precision motion system, the installation of its guide rail plays a vital role in its accuracy.

[0003] When installing the guide rails to the shoulders on both sides of the support platform, in order to obtain higher installation accuracy, it is necessary to apply a pre-tightening force toward the middle of the support platform to the guide rails so that the guide rails are close to the shoulders, thereby reducing the surface difference between the guide rails and the shoulders.

[0004] However, it is difficult to ensure that the surface difference between the guide rail and the shoulder portion is consistent in the method of applying preload to the guide rail in the prior art. Utility Model Content

[0005] The present application provides a clamping tool for improving the surface difference consistency between a moving guide rail and a shoulder portion during the guide rail installation process of a gene sequencer.

[0006] The clamping fixture provided in the present application is applied to the guide rail installation of a gene sequencer, wherein the gene sequencer comprises a bearing platform, a first guide rail and a second guide rail, wherein the bearing platform has a first shoulder portion and a second shoulder portion on both sides in the width direction, and the first shoulder portion and the second shoulder portion respectively have a horizontal bearing surface and a vertical shoulder surface; when assembling the bearing platform, the first guide rail and the second guide rail, the first guide rail and the second guide rail respectively abut against the two shoulder surfaces and are respectively fixedly connected to the two corresponding bearing surfaces;

[0007] The clamping fixture is characterized in that the clamping fixture comprises: a first abutment block, a second abutment block and a slide rail; wherein the first abutment block and the second abutment block are mounted on the slide rail and can slide along the length direction of the slide rail; when assembling the bearing platform, the first guide rail and the second guide rail, the first abutment block is used to abut against the side of the first guide rail away from the second guide rail, and the second abutment block is used to abut against the side of the second guide rail away from the first guide rail;

[0008] It also includes a locking device for locking the first abutment block at a set position of the slide rail;

[0009] It also includes a force applying device, which is used to drive the second abutment block to press against the second guide rail and to apply a set amount of abutment force to the second guide rail.

[0010] In the above technical solution, the force-applying device applies a set amount of clamping force to the second clamping block. Under the action of the slide rail and the locking device, the first abutting block and the second abutting block apply the same amount of clamping force to the two guide rails, thereby improving the consistency of the surface difference between the two guide rails and the carrier. The consistency of the preload force at different parts of the guide rail can also be improved by adjusting the different positions of the clamping fixture to clamp the guide rail, thereby improving the consistency of the surface difference between different parts of the same guide rail and the carrier. The force-applying device can also be set to apply the same clamping force to improve the consistency of the surface difference between the guide rail and the carrier of the mass-produced gene sequencer.

[0011] In a possible implementation manner, the force applying device includes a fixing seat and a force applying bolt;

[0012] The fixing seat is fixed to the slide rail and is located on the side of the second abutment block away from the first abutment block; the fixing seat is provided with a threaded through hole opened along the length direction of the slide rail;

[0013] The force bolt is passed through the threaded through hole; when the second abutting block abuts against the second guide rail, the force bolt abuts against a side of the second abutting block away from the second guide rail.

[0014] In a possible implementation manner, the locking device includes a locking bolt, and the locking bolt is passed through the first abutment block;

[0015] When the first abutment block is locked at a set position of the slide rail, the locking bolt locks the first abutment block on the slide rail.

[0016] In a possible implementation manner, the slide rail includes a locking plane;

[0017] When the first abutment block is locked at a set position of the slide rail, the locking bolt abuts against the locking abutment plane.

[0018] In a possible implementation manner, the slide rail has a supporting surface on a side facing the supporting platform;

[0019] A boss portion is provided between the two shoulder portions of the bearing platform; and the abutting surface is used for abutting against the boss portion.

[0020] In a possible implementation manner, the cross-section of the slide rail is square.

[0021] In a possible implementation manner, the material hardness of the slide rail is greater than the hardness of the first abutting block and the second abutting block.

[0022] In a possible implementation manner, the slide rail is made of stainless steel, and the first abutting block and the second abutting block are made of copper alloy.

[0023] In a possible implementation manner, the surface roughness of the surface where the first abutting block abuts against the first guide rail, and the surface where the second abutting block abuts against the second guide rail, are both no greater than Ra3.2.

[0024] In a possible implementation manner, the first abutment block and the second abutment block are further provided with a step structure respectively;

[0025] When the first abutting block abuts against the first guide rail and the second abutting block abuts against the second guide rail, the step structure is used to prevent the first abutting block and the second abutting block from abutting against the supporting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of a carrier platform for a gene sequencer;

[0027] Figure 2 This is a schematic diagram of the guide rail installation of the gene sequencer;

[0028] Figure 3 This is an overall schematic diagram of the clamping tooling in the embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of the application of the clamping tooling in the embodiment of the present application;

[0030] Figure 5 This is another example of the clamping tool in the embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0032] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] To facilitate understanding of the clamping fixture provided in the embodiment of the present application, its application scenario is first described. The clamping fixture provided in the embodiment of the present application can be used to assist in installing the guide rails of the high-precision linear motion system of a gene sequencer. The high-precision motion system of a gene sequencer is a key part to ensure accuracy and repeatability during the sequencing process. For a high-precision motion system, the installation of its guide rails plays a vital role in its accuracy.

[0034] First, let me introduce the relevant structure of the guide rail. Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the platform for the gene sequencer. Figure 2 The figure is a schematic diagram of the guide rail installation of the gene sequencer. The gene sequencer includes a carrier 110, and the carrier 110 has a first shoulder portion 120 and a second shoulder portion 130 on both sides along the width direction thereof. Specifically, a boss portion is sandwiched between the first shoulder portion 120 and the second shoulder portion 130, so that the cross-section of the carrier 110 presents a "convex" shape. The first shoulder portion 120 and the second shoulder portion 130 respectively have a horizontal bearing surface and a vertical shoulder surface, that is, the first shoulder portion 120 includes a horizontally arranged first bearing surface 121 and a vertically arranged first shoulder surface 122; the second shoulder portion 130 includes a horizontally arranged second bearing surface 131 and a vertically arranged second shoulder surface 132. In order to ensure the assembly of the carrier 110 with other components of the gene sequencer, auxiliary bearing structures 140 are also arranged on both sides of the carrier 110.

[0035] The gene sequencer also includes a first guide rail 200 and a second guide rail 300. When assembling the support platform 110, the first guide rail 200 and the second guide rail 300, the first guide rail 200 and the second guide rail 300 are respectively against the two shoulder surfaces and are respectively fixedly connected to the two corresponding support surfaces. When installing the first guide rail 200, first place the first guide rail 200 on the first support surface 121, then apply a pre-tightening force to make the first guide rail 200 close to the first shoulder surface, and then use a threaded fastener to pass through the first guide rail 200 and the first support surface 121 to fix the first guide rail 200 to the first shoulder portion 120; similarly, when installing the second guide rail 300, first place the second guide rail 300 on the second support surface 131, then apply a pre-tightening force to make the second guide rail 300 close to the second shoulder surface 132, and then use a threaded fastener to pass through the second guide rail 300 and the second support surface 131 to fix the second guide rail 300 to the second shoulder portion 130.

[0036] When installing the first guide rail 200 on the first shoulder portion 120 and the second guide rail 300 on the second shoulder portion 130, the prior art mostly applies pre-tightening force manually or uses a clamping device whose pre-tightening force size cannot be observed to assist in applying the pre-tightening force, resulting in poor consistency in the pre-tightening force size between different parts of the same guide rail, different guide rails of the same gene sequencer, and guide rails of different gene sequencers, which in turn results in poor consistency in the surface difference between the guide rail and the shoulder surface, making it difficult to ensure the accuracy of the high-precision motion system of the gene sequencer.

[0037] To this end, the present application provides a clamping fixture 400 to improve the consistency of the preload force applied to the guide rail, thereby improving the consistency of the flushness between the guide rail and the shoulder surface. The structural features and application scenarios of the clamping fixture 400 are described in detail below with reference to the accompanying drawings.

[0038] refer to Figure 3 , Figure 3 The clamping fixture 400 provided in the embodiment of the present application includes a first abutment block 410, a second abutment block 420 and a slide rail 430. The first abutment block 410 and the second abutment block 420 are mounted on the slide rail 430, and the first abutment block 410 and the second abutment block 420 are both used to abut against the guide rail.

[0039] The first abutment block 410 can slide on the slide rail 430 along the length direction of the slide rail 430 (the length direction of the slide rail 430 can be referred to as Figure 3 ), and the first abutment block 410 can be locked to a set position on the slide rail 430.

[0040] The second abutment block 420 can also slide on the slide rail 430 along the length direction of the slide rail 430. When the guide rail is clamped by using the clamping fixture 400, the first abutment block 410 is relatively locked with the slide rail 430 and the first abutment block 410 can abut against the first guide rail 200; the second abutment block 420 can slide along the length direction of the slide rail 430, so that the second abutment block 420 abuts against the second guide rail 300, and the second abutment block 420 can abut against the second guide rail 300 with a set abutting force.

[0041] The clamping fixture 400 also includes a force-applying device 440. The force-applying device 440 can act on the second abutment block 420, and the force-applying device 440 can apply a clamping force from the second abutment block 420 to the first abutment block 410 in the length direction of the slide rail 430. When applying the clamping force at the set position, the magnitude of the clamping force can be directly or indirectly displayed. For example, the magnitude of the clamping force can be directly displayed by instruments such as pressure sensors and dynamometers, or can be indirectly displayed by physical quantities such as the torque of the tightening bolts and the displacement of the spring. In addition, the clamping force that can be applied by the force-applying device 440 should be adjustable within a certain range to enhance the versatility of the clamping device.

[0042] The clamping fixture 400 also includes a locking device 450. The locking device 450 is disposed at the first abutment block 410 and acts on the first abutment block 410. When the clamping fixture 400 is used, the locking device 450 may include an unlocked state and a locked state. When the locking device 450 is in the unlocked state, the second abutment block 420 may slide freely on the slide rail 430 along the length direction of the slide rail 430; when the locking device 450 is in the locked state, the locking device 450 may lock the first abutment block 410 at a set position on the slide rail 430. Specifically, when the locking device 450 is in the locked state, the locking methods that can be used may include but are not limited to locking using friction force, locking using pins, and the like.

[0043] Specifically, the force-applying means 440 may also apply force to the second abutting block 420 in a manner including, but not limited to, pushing, pulling, etc. The first abutting block 410 cooperates with the locking device 450 to roughly adjust the distance between the first abutting block 410 and the second abutting block 420, and then finely adjust the force-applying means 440 so that the force-applying means 440 pushes the second abutting block 420 to slide toward the first abutting block 410, and applies a set amount of abutting force to the second guide rail 300 when the second abutting block 420 abuts against the second guide rail 300.

[0044] For reference Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 4 Schematic diagram of the clamping tooling application in the embodiment of the present application. Figure 4As shown in , when installing the first guide rail 200 and the second guide rail 300, it is necessary to first place the first guide rail 200 on the first bearing surface 121 and the second guide rail 300 on the second bearing surface 131; then, when the locking device 450 is in the unlocked state, adjust the position of the first abutment block 410 so that the distance between the first abutment block 410 and the second abutment block 420 is slightly larger than the distance between the first guide rail 200 and the second guide rail 300; at this time, the clamping device can be placed across the bearing platform 110, and the first abutment block 410 and the second abutment block 420 are located on the two sides of the first guide rail 200 and the second guide rail 300 that are away from each other. Next, adjust the locking device 450 to be in the locked state, and lock the first abutment block 410 at the set position on the slide rail 430. Then, the force applying device 440 and the second abutting block 420 are adjusted so that the second abutting block 420 abuts against the second guide rail 300, and the force applying device 440 applies a set abutting force to the second abutting block 420, so that the second abutting block 420 abuts against the second guide rail 300 with the set abutting force. The reaction force of the abutting force makes the force applying device 440 and the slide rail 430 have a tendency to move away from the second abutting block 420 along the length direction of the slide rail 430, thereby driving the first abutting block 410 to have a tendency to move toward the second abutting block 420, so that the first abutting block 410 also abuts against the second guide rail 300 with the same abutting force, thereby clamping the first guide rail 200 and the second guide rail 300. After the clamping fixture 400 clamps the first guide rail 200 and the second guide rail 300 , further operations of fixing the first guide rail 200 to the first bearing surface 121 and fixing the second guide rail 300 to the second bearing surface 131 can be performed.

[0045] In order to further improve the consistency of the surface difference of each part along the length direction of the first guide rail 200 and the second guide rail 300, when the first guide rail 200 and the second guide rail 300 are fixed to the support platform 110, the clamping tool 400 can be first clamped at the middle part of the first guide rail 200 and the second guide rail 300 along the length direction of the guide rails, and then the middle part of the first guide rail 200 and the second guide rail 300 along the length direction of the guide rails is fixed first, and then the clamping tool 400 is clamped at both sides of the middle part in turn, and the fixation of the two side parts is completed in turn.

[0046] When the clamping fixture 400 of the present application is used to assist in the installation and fixing of the first guide rail 200 and the second guide rail 300, the consistency of the face difference between the guide rail and the shoulder surface can be improved in three aspects. First, at a certain position along the length direction of the guide rail, when the clamping fixture 400 clamps the first guide rail 200 and the second guide rail 300, the force applying device 440 applies a preload of a set size to the second guide rail 300. Since the first abutment block 410 and the second abutment block 420 are connected by the slide rail 430, it can be ensured that the abutment force of the first abutment block 410 on the first guide rail 200 and the abutment force of the second abutment block 420 on the second guide rail 300 are consistent, thereby improving the consistency of the face difference between the first guide rail 200 and the second guide rail 300 and the bearing platform 110 at the same position along the length direction of the guide rail. On the second aspect, when installing the first guide rail 200 and the second guide rail 300 on the same gene sequencer, for different positions along the length direction of the guide rail, the same magnitude of clamping force can be applied by setting the force-applying device 440, so that the clamping force of the clamping fixture 400 at each position is consistent, thereby improving the consistency of the face difference between the guide rail and the carrier 110 at different positions along the length direction of the guide rail. On the third aspect, for multiple gene sequencers in the same batch, the consistency of the face difference between the guide rail and the carrier 110 of each gene sequencer during batch production can also be improved by setting a clamping force of the same magnitude. By improving the face difference consistency between the guide rail and the carrier 110 in the above three dimensions, on the one hand, the motion accuracy of the high-precision motion system of the gene sequencer can be improved, and on the other hand, the improvement of the face difference consistency between the guide rail and the carrier 110 of multiple gene sequencers in the same batch can also improve the efficiency of adjusting the high-precision motion system and save production costs.

[0047] When the force applying device 440 is provided, the force applying device 440 may be configured to apply a pressing force to the second abutting block 420 in a push or pull manner. Figure 3 The force applying device 440 is located at a side of the second abutting block 420 away from the first abutting block 410 , and applies a pressing force to the second abutting block 420 in a pushing manner.

[0048] Specifically, the force applying device 440 includes a fixing seat 441 and a force applying bolt 442. The fixing seat 441 is fixed to the slide rail 430 and is located on a side of the second abutting block 420 away from the first abutting block 410. Figure 3As shown, the fixing seat 441 is provided at one end of the slide rail 430 away from the first abutment block 410, and the fixing seat 441 is fixed to the slide rail 430 by a threaded fastener. The fixing seat 441 is provided with a threaded through hole opened along the length direction of the slide rail 430, and the force bolt 442 is provided in the threaded through hole along the length direction of the slide rail 430. The force bolt 442 is threadedly matched with the threaded through hole, and the force bolt 442 can be rotated to make the force bolt 442 pass through the threaded through hole along the length direction of the slide rail 430.

[0049] When the second abutting block 420 abuts against the second guide rail 300, the force bolt 442 abuts against the side of the second abutting block 420 away from the second guide rail 300, and the force bolt 442 is locked in the threaded through hole with a set torque, and by locking the force bolt 442 with the set torque, the force bolt 442 applies a set amount of abutting force to the second abutting block 420. The size of the set torque can be converted according to the size of the set abutting force applied to the second abutting block 420 as needed, and the specific implementation of locking with the set torque can be achieved by using a torque wrench.

[0050] The force-applying device 440 is arranged to be located on the side of the second abutting block 420 away from the first abutting block 410 and pushes toward the second abutting block 420, so that the force-applying device 440 does not interfere with the space between the first abutting block 410 and the second abutting block 420, so that the first abutting block 410 can have a longer stroke on the slide rail 430, thereby improving the versatility of the clamping fixture 400. Of course, in other possible implementations, if the space on the side of the second abutting block 420 away from the first abutting block 410 is limited and insufficient to accommodate the force-applying device 440, the force-applying device 440 can also be arranged at other positions. Figure 5 , Figure 5 Another example of the clamping tool in the embodiment of the present application is: Figure 5 The middle force applying device 440 is disposed between the second abutting block 420 and the first abutting block 410 , and applies a pressing force to the second abutting block 420 in a pulling manner.

[0051] In addition, in some possible implementations, due to the space limitation of the second abutment block 420 away from the first abutment block 410, in the length direction of the slide rail 430, one side of the force-applying device 440 may be difficult to accommodate the torque wrench for operation. In this case, some transmission devices may be provided so that the torque wrench can be operated from other positions. Figure 5 As shown in the figure, a gear is set on the first rod 443, and a rack is set on the second rod 444. The gear shaft is meshed with the rack, that is, rotating the first rod 443 can drive the second rod 444 to slide along the length direction of the slide rail 430. Figure 5 The embodiment shown achieves that the torque wrench can be operated from other positions.

[0052] The set clamping force is realized by setting the locking torque of the force bolt 442, which has a simple structure, is easy to manufacture, and has a low cost. The torque value can be easily adjusted by a torque wrench to adjust the clamping force, which is easy to operate and easy to realize.

[0053] When the locking device 450 is provided, the locking methods that can be used include but are not limited to locking by friction, locking by pins, etc. As an optional implementation, continue to refer to Figure 3 The locking device 450 can be locked by utilizing the friction between the locking bolt and the slide rail 430 .

[0054] Specifically, a threaded hole is provided on the first abutting block 410, and a locking bolt is passed through the threaded hole and is threadedly matched with the threaded hole. By rotating the locking bolt, the locking bolt can pass through the threaded hole. When the first abutting block 410 is passed through the slide rail 430, the threaded hole is opposite to the slide rail 430, so that the locking bolt can abut against the slide rail 430. When the first abutting block 410 is locked at the set position of the slide rail 430, the locking bolt abuts against the slide rail 430, and the friction between the locking bolt and the slide rail 430 locks the first abutting block 410 at this set position, so that the locking bolt locks the first abutting block on the slide rail 430. When the position of the first abutting block 410 is to be adjusted, the locking bolt can be rotated so that the locking bolt is out of contact with the slide rail 430, and the first abutting block 410 can be contact-locked.

[0055] A locking bolt is used as the locking device 450. On the one hand, the state conversion of the locking device 450 between the locked state and the unlocked state can be achieved only by rotating the locking bolt, and the operation is simple and convenient. On the other hand, by adopting the locking bolt, there is no minimum step length for adjusting the position of the first abutment block 410 on the slide rail 430, thereby realizing stepless adjustment of the position in the length direction of the slide rail 430, thereby improving the versatility of the clamping device.

[0056] Of course, in other possible implementations, a pin may also be used as the locking device 450. For example, a series of countersunk holes are provided on the slide rail 430 along the length direction of the slide rail 430, and the pin is passed through the first abutment block 410 and enters the countersunk hole to lock the first abutment block 410 in a set position. Compared with the friction locking method of the locking bolt, the advantage of using a pin for locking is that the locking device can ensure a more stable and reliable locking effect.

[0057] When the locking bolt is used to lock the first abutting block 410 , in order to improve the reliability of the locking device 450 , an auxiliary locking structure may be provided on the slide rail 430 .

[0058] As an optional implementation, continue to refer to Figure 3The slide rail 430 includes a locking plane. When the first abutting block 410 is mounted on the slide rail 430, the threaded hole on the first abutting block 410 is opposite to the locking plane. When the first abutting block 410 is locked at the set position of the slide rail 430, the locking bolt abuts against the locking plane. By providing the locking plane on the slide rail 430, when the locking bolt abuts against the locking plane, the locking bolt can stably abut against the slide rail 430 by increasing the contact area, thereby improving the stability of the locking bolt when locking the first abutting block 410 to the slide rail 430.

[0059] As an optional implementation, refer to Figure 3 and Figure 4 The slide rail 430 has a contact surface on one side facing the support platform 110. Figure 4 In the use state shown, the abutting surface is a horizontal surface. The abutting surface is used to abut against the support platform 110, specifically, it can abut against the boss portion between the two shoulder portions of the support platform 110, so that the clamping tool 400 can naturally rest on the support platform 110, and the operator can free both hands to adjust the locking device 450 or the force applying device 440, thereby improving the convenience of using the clamping tool 400.

[0060] In a specific implementation, the cross section of the slide rail 430 that is perpendicular to the length direction of the slide rail 430 can be in various shapes.

[0061] As an optional implementation, refer to Figure 4 The cross-section of the slide rail 430 perpendicular to the length direction of the slide rail 430 is a square. When the slide rail 430 with a square cross-section is used, on the one hand, it can satisfy the requirement that the slide rail 430 has both a tight surface 431 and a rest surface, and the slide rail 430 can be used to improve the Figure 1 In addition to the convenience, the second abutment block 420 also has high stability when locked in the set position on the slide rail 430. On the other hand, when the abutment surface 431 of the slide rail 430 with a square cross-section is damaged, the slide rail 430 can be turned over and used to increase the service life of the clamping device. Specifically, after the locking device 450 is locked multiple times, the abutment surface 431 may be damaged, thereby affecting the locking reliability. At this time, the first abutment block 410, the second abutment block 420, the force applying device 440, etc. can be removed, the slide rail 430 is turned over, and then the first abutment block 410, the second abutment block 420, the force applying device 440, etc. are installed on the slide rail 430 to obtain a new abutment surface 431.

[0062] Of course, in other possible implementations, the shape of the cross section of the slide rail 430 that is perpendicular to the length direction of the slide rail 430 may also be cylindrical, chamfered cylindrical, triangular, hexagonal, etc., which are not listed here one by one.

[0063] As an optional embodiment, when the first abutting block 410 and the second abutting block 420 are specifically set, the material hardness of the slide rail 430 is greater than the material hardness of the first abutting block 410 and the second abutting block 420. The material hardness of the first abutting block 410 and the second abutting block 420 can also be set to be less than the material hardness of the first guide rail 200 and the second guide rail 300. By using a material with higher hardness to make the slide rail 430, the slide rail 430 can have higher structural rigidity. When clamping the first guide rail 200 and the second guide rail 300 with a certain span, the slide rail 430 is not easy to bend, thereby improving the reliability and stability of the clamping fixture 400. Using a material with lower hardness to make the first abutting block 410 and the second abutting block 420 can reduce the risk of the first abutting block 410 or the second abutting block 420 scratching the guide rail during the process of applying the clamping force and adjusting the position of the clamping device.

[0064] As a further example, the material of the slide rail 430 is stainless steel, and the material of the first abutment block 410 and the second abutment block 420 is copper alloy. It should be understood that the copper alloy here can be a material with a hardness lower than that of stainless steel, such as copper-zinc alloy. The use of stainless steel and copper alloy can meet different hardness requirements while ensuring that the slide rail 430 and the abutment block are not easy to rust, which is conducive to improving the stability and reliability of the clamping fixture 400.

[0065] When fastening the first guide rail 200 or the second guide rail 300 to the bearing surface, the threaded fastener needs to be fastened with a set torque along the direction of the guide rail toward the bearing surface, so as to ensure that the surface difference between the guide rail and the bearing surface also has good consistency.

[0066] When the clamping fixture 400 is used, the clamping force applied by the first abutment block 410 to the first guide rail 200 and the pre-tightening force applied by the second abutment block 420 to the second guide rail 300 are both along the length direction of the slide rail 430. The length direction of the slide rail 430 and the direction of the guide rail pointing to the bearing surface are perpendicular to each other, which means that when the guide rail is fastened to the bearing surface, the guide rail needs to overcome the friction between the guide rail and the shoulder surface caused by the clamping force and the error between the guide rail and the abutment block to get closer to the bearing surface. Therefore, the smaller the friction caused by the clamping force on the guide rail, the smaller the resistance to the guide rail approaching the bearing surface. The threaded fastener needs to set the torque along the direction of the guide rail pointing to the bearing surface to complete the tightening, which is conducive to the control of the surface difference between the guide rail and the bearing surface.

[0067] As an optional embodiment, the friction coefficient between the abutment block and the guide rail can be reduced to weaken the effect of friction on the consistency of the surface difference between the guide rail and the bearing surface. As a specific example, the surface where the first abutment block abuts against the first guide rail and the surface where the second abutment block abuts against the second guide rail have a surface roughness no greater than Ra3.2.

[0068] By processing the first abutting surface and the second abutting surface to be relatively smooth, the friction coefficient between the first abutting surface and the first guide rail 200 and the friction coefficient between the second abutting surface and the second guide rail 300 can be reduced, thereby weakening the influence of friction on the consistency of the surface difference between the guide rail and the bearing surface, improving the consistency of the surface difference between the first guide rail 200 and the second guide rail 300 and the bearing surface, and thereby improving the accuracy of the precision motion system.

[0069] As an optional implementation, refer to Figure 5 The first abutment block 410 and the second abutment block 420 are also respectively provided with step structures 411 and 421; when the first abutment block 410 abuts against the first guide rail 200 and the second abutment block 420 abuts against the second guide rail 300, the step structures 411 and 421 are used to prevent the first abutment block 410 and the second abutment block 420 from abutting against the side of the supporting platform 110.

[0070] When the clamping fixture 400 is used, if the first abutting block 410 or the second abutting block 420 directly abuts against the carrier 110, the actual abutting force applied to the first guide rail 200 or the second guide rail 300 will be less than the abutting force applied by the device, thereby affecting the consistency of the surface difference between the guide rail and the shoulder surface. By setting the step structures 411 and 421 to avoid the carrier 110 when using the clamping fixture 400, the risk of the first abutting block 410 and the second abutting block 420 directly abutting against the carrier 110 can be reduced, thereby reducing the risk of affecting the consistency of the surface difference between the guide rail and the shoulder surface.

[0071] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this disclosure.

[0072] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A clamping fixture, used for guide rail installation of a gene sequencer, the gene sequencer comprising a carrier, a first guide rail and a second guide rail, the carrier having a first shoulder portion and a second shoulder portion on both sides in a width direction, the first shoulder portion and the second shoulder portion respectively having a horizontal bearing surface and a vertical shoulder surface; when assembling the carrier, the first guide rail and the second guide rail, the first guide rail and the second guide rail respectively abut against two shoulder surfaces and are respectively fixedly connected to two corresponding bearing surfaces; It is characterized in that The clamping fixture comprises: a first abutment block, a second abutment block and a slide rail; wherein the first abutment block and the second abutment block are mounted on the slide rail and can slide along the length direction of the slide rail; when assembling the bearing platform, the first guide rail and the second guide rail, the first abutment block is used to abut against the side of the first guide rail away from the second guide rail, and the second abutment block is used to abut against the side of the second guide rail away from the first guide rail; It also includes a locking device for locking the first abutment block at a set position of the slide rail; It also includes a force applying device, which is used to drive the second abutment block to press against the second guide rail and to apply a set amount of abutment force to the second guide rail.

2. The clamping fixture according to claim 1, characterized in that: The force applying device comprises a fixing seat and a force applying bolt; The fixing seat is fixed to the slide rail and is located on the side of the second abutment block away from the first abutment block; the fixing seat is provided with a threaded through hole opened along the length direction of the slide rail; The force bolt is passed through the threaded through hole; when the second abutting block abuts against the second guide rail, the force bolt abuts against a side of the second abutting block away from the second guide rail.

3. The clamping fixture according to claim 1, characterized in that: The locking device comprises a locking bolt, and the locking bolt is passed through the first abutment block; When the first abutment block is locked at a set position of the slide rail, the locking bolt locks the first abutment block on the slide rail.

4. The clamping fixture according to claim 3, characterized in that: The slide rail includes a locking plane; When the first abutment block is locked at a set position of the slide rail, the locking bolt abuts against the locking abutment plane.

5. The clamping fixture according to claim 1, characterized in that: The slide rail has a supporting surface on one side facing the supporting platform; A boss portion is provided between the two shoulder portions of the bearing platform; and the abutting surface is used for abutting against the boss portion.

6. The clamping fixture according to claim 5, characterized in that: The cross-section of the slide rail is a square.

7. The clamping fixture according to any one of claims 1 to 6, characterized in that: The material hardness of the slide rail is greater than the hardness of the first abutting block and the second abutting block.

8. The clamping fixture according to claim 7, characterized in that: The slide rail is made of stainless steel, and the first abutting block and the second abutting block are made of copper alloy.

9. The clamping fixture according to claim 7, characterized in that: The surface roughness of the surface where the first abutting block abuts against the first guide rail and the surface where the second abutting block abuts against the second guide rail are both no greater than Ra3.

2.

10. The clamping fixture according to claim 7, characterized in that: The first abutment block and the second abutment block are also respectively provided with a step structure; When the first abutting block abuts against the first guide rail and the second abutting block abuts against the second guide rail, the step structure is used to prevent the first abutting block and the second abutting block from abutting against the supporting platform.

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