A displacement driving module of a PCB pin machine
By introducing guide and limit components and high-precision displacement control technology into the PCB pin insertion machine, the problem of inaccurate positioning of traditional modules has been solved, achieving high-precision pin insertion operation and improving production efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU KANGCHENGLIANG ELECTROMECHANICAL TECH CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional PCB pin insertion machines lack limit mechanisms and displacement detection in their displacement drive modules, resulting in low positioning accuracy of the pin insertion mechanism and affecting production quality.
The design includes a front moving plate, a rear fixed plate, a drive assembly, and a guide and limit assembly. By cooperating with the guide waist hole and the lower connecting part, the movement range of the front moving plate is precisely limited. Combined with the lead screw and nut drive, the grating detection assembly, and the displacement sensor, high-precision displacement control and real-time monitoring are achieved.
It improves the motion stability and positioning accuracy of the pin insertion mechanism, reduces manufacturing costs, and enhances production efficiency and product quality.
Smart Images
Figure CN224306024U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pin insertion equipment technology, specifically to a displacement drive module for a PCB pin insertion machine. Background Technology
[0002] Sometimes, pins, terminals, or other irregularly shaped workpieces need to be inserted into PCB circuit boards. Traditionally, this involves manually inserting the workpieces into the holes on the circuit board. However, manual insertion is very difficult, labor-intensive, and results in low production efficiency and compromised product quality. Although many automated insertion machines have emerged in recent years, their displacement drive modules often lack limiting mechanisms and displacement detection during the pin insertion process, leading to low positioning accuracy. This can cause pin insertion deviations and affect product quality. Utility Model Content
[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a displacement drive module for a PCB pin insertion machine, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention adopts a displacement drive module for a PCB pin insertion machine, comprising a front moving plate, a rear fixed plate, a drive assembly, and a guide and limit assembly, wherein:
[0005] Both the front movable plate and the rear fixed plate extend along a first direction and are spaced apart along a second direction. The front movable plate has a connecting assembly and a guide hole on its side along the second direction away from the rear fixed plate. The connecting assembly is located near the top of the front movable plate and is used to connect the pin insertion mechanism. The guide hole is located below the connecting assembly and extends along the first direction. The driving assembly is located between the front movable plate and the rear fixed plate and is used to drive the front movable plate to move the pin insertion mechanism up and down relative to the rear fixed plate along the first direction to the pin insertion position.
[0006] The guide limiting assembly includes a limiting plate, an upper connecting portion, and a lower connecting portion. The limiting plate extends along the first direction, is disposed on the same side as the connecting assembly, and is spaced apart from the front movable plate along the second direction. The upper connecting portion and the lower connecting portion are respectively disposed at the upper and lower ends of the limiting plate. The upper connecting portion is connected to the top of the rear fixed plate, and the lower connecting portion passes through the guide waist hole and connects to the rear fixed plate, thereby limiting the movement range of the front movable plate through the cooperation of the lower connecting portion and the guide waist hole.
[0007] This utility model provides a displacement drive module for a PCB pin insertion machine. The drive component is located between the front moving plate and the rear fixed plate, and can directly drive the front moving plate to move the pin insertion mechanism up and down along a first direction to the pin insertion station. Through the cooperation of the guide hole and the lower connecting part, the movement range of the front moving plate can be precisely limited, improving the stability and accuracy of the pin insertion mechanism's movement. The guide and limit component not only plays a guiding role, but also precisely limits the movement of the front moving plate through the structural design of the limit plate, the upper connecting part, and the lower connecting part. This integration of dual functions makes the entire displacement drive module ensure movement accuracy while simplifying the structure and reducing manufacturing costs.
[0008] In some embodiments, the drive assembly includes a fixed base, a drive motor, a coupling, and a lead screw. The fixed base is located on the top of the rear fixed plate facing the front movable plate along the second direction. The drive motor and the coupling are sequentially located on the top of the fixed base along the first direction. The output end of the drive motor at its bottom is connected to the lead screw via the coupling. The lead screw extends along the first direction, with bearing supports at both ends and lead screw nuts fitted onto them. The bearing supports are connected to the rear fixed plate, and the lead screw nuts are connected to the front movable plate, for driving the lead screw nuts via the drive motor to move the front movable plate along the first direction.
[0009] By employing the above technical solution and using a lead screw and nut transmission, high-precision displacement control can be achieved. The high matching accuracy of the lead screw and nut allows for precise conversion of the motor's rotational motion into the linear motion of the front moving plate, thereby improving the positioning accuracy of the pin insertion mechanism.
[0010] In some embodiments, both the upper connecting portion and the lower connecting portion are U-shaped components. Each U-shaped component includes a connecting end and a connecting end. Two guide holes are spaced apart along a third direction and correspond to the connecting ends. The connecting end of the upper connecting portion is connected to the top end of the limiting plate, and the connecting end is inserted into both ends of the lead screw and connected to the rear fixing plate. The connecting end of the lower connecting portion is connected to the bottom end of the limiting plate, and the connecting end is inserted into the guide holes and both ends of the lead screw, and connected to the rear fixing plate.
[0011] By adopting the above technical solution, the design of the connecting end and the plug end of the U-shaped part can effectively distribute the force, making the connection more stable and reducing structural deformation caused by local stress concentration.
[0012] In some embodiments, the connecting assembly includes a positioning plate, connecting blocks, and a connecting plate. The positioning plate is disposed between the front movable plate and the limiting plate along the second direction, connected to the front movable plate on one side along the second direction, and having a positioning protrusion on the other side. The limiting plate has a limiting hole corresponding to the positioning protrusion, extending along a third direction for abutting and limiting the positioning protrusion. The connecting plate extends along the first direction and is disposed on the side of the limiting plate away from the positioning plate along the second direction, for connecting the pin insertion mechanism. The connecting blocks are respectively disposed at both ends of the positioning plate along the third direction and connected to the connecting plate.
[0013] Using the above technical solution, the positioning protrusion on the positioning plate cooperates with the limiting hole on the limiting plate, which can accurately limit the position of the positioning plate and prevent it from shifting during movement. The limiting hole extends in a third direction and is configured to cooperate with the guide hole for limiting.
[0014] In some embodiments, along the first direction, the length of the front movable plate is less than the length of the rear fixed plate, and the length of the positioning plate is less than the length of the limiting plate. Along the third direction, the width of the positioning plate is greater than the width of the limiting plate.
[0015] Using the above technical solution, the length of the front moving plate is less than the length of the rear fixed plate. This design allows the rear fixed plate to distribute the load and provide more stable support for the entire module.
[0016] In some embodiments, the guide limiting assembly further includes a guide rail assembly, which is respectively disposed on both sides of the lead screw along a third direction. The guide rail assembly includes a linear guide rail, a first slider, and a second slider. The linear guide rail extends along the first direction and is disposed on the side of the rear fixed plate facing the front movable plate along the second direction. The first slider and the second slider are spaced apart along the first direction, and one end of each slider along the second direction is slidably connected to the linear guide rail, while the other end of each slider is connected to the front movable plate.
[0017] By adopting the above technical solution, the linear guide rail achieves motion through rolling friction. It has a low coefficient of friction and a small difference between dynamic and static friction, which enables high-precision positioning. This characteristic makes the front moving plate move more smoothly along the first direction, reducing vibration and impact, thereby improving the positioning accuracy of the pin insertion mechanism.
[0018] In some embodiments, the guide limiting assembly further includes a grating detection assembly, which is disposed on the side of the linear guide rail away from the lead screw along the third direction, and includes a plurality of sensing gratings and a metal plate. The plurality of sensing gratings are spaced apart along the first direction, and the metal plate is disposed at the end of the first slider away from the lead screw along the third direction, and is correspondingly disposed with respect to the sensing gratings.
[0019] Using the above technical solution, the grating detection component, through the cooperation of the sensing grating and the metal sheet, can achieve high-precision displacement measurement. The grating detection component can monitor the position of the front moving plate in real time, providing accurate displacement data. This allows the control system to adjust motion parameters promptly, ensuring the accuracy of the pin insertion operation.
[0020] In some embodiments, the guide and limiting assembly further includes a cable chain assembly, which is disposed on the side of the grating detection assembly away from the lead screw along the third direction, and includes a cable chain, a cable chain fixing plate, and a cable chain connecting plate. The cable chain fixing plate extends along the first direction and is disposed on the side of the rear fixing plate along the third direction. The cable chain connecting plate extends along the first direction and is disposed on the side of the connecting plate along the third direction. The cable chain is disposed along the second direction between the cable chain fixing plate and the cable chain connecting plate, and its two ends are respectively connected to the cable chain fixing plate and the cable chain connecting plate.
[0021] Using the above technical solution, the cable chain assembly can fix cables, oil pipes, air pipes, etc., within it, providing physical protection to prevent them from being subjected to mechanical damage, chemical corrosion, etc. from the external environment.
[0022] In some embodiments, the displacement drive module further includes a displacement sensor located on the side of the front moving plate away from the rear fixed plate along the second direction and below the guide waist hole, for detecting the movement distance of the lower connecting part along the first direction.
[0023] By adopting the above technical solution, the displacement sensor can provide high-precision displacement measurement. By accurately detecting the movement distance of the lower connecting part, the displacement sensor can provide real-time feedback to the control system, thereby further optimizing the motion control of the pin insertion machine. This not only improves the positioning accuracy and reliability of the pin insertion machine, but also further enhances the overall performance and production efficiency. Attached Figure Description
[0024] Figure 1 This is a perspective view of an embodiment of the present utility model;
[0025] Figure 2 This is a partial structural schematic diagram of an embodiment of the present utility model;
[0026] In the picture:
[0027] 1. Displacement drive module;
[0028] 2. Front moving plate; 20. Guide hole; 21. Positioning plate; 210. Positioning protrusion; 22. Connecting block; 23. Connecting plate; 24. Displacement sensor;
[0029] 3. Rear fixing plate;
[0030] 40. Fixed base; 41. Drive motor; 42. Coupling; 43. Lead screw; 44. Bearing support base;
[0031] 50. Limiting plate; 51. Upper connecting part; 52. Lower connecting part; 53. Connecting end; 54. Plug end; 55. Limiting waist hole;
[0032] 60. Linear guide rail; 61. First slider; 62. Second slider; 63. Sensor grating; 64. Metal sheet; 65. Cable chain; 66. Cable chain fixing plate; 67. Cable chain connecting plate. Detailed Implementation
[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0034] refer to Figure 1 and Figure 2 The figure shows a perspective view of a displacement drive module 1 for a PCB pin insertion machine provided in an embodiment of the present invention; the figure also shows a partial structural schematic diagram of a displacement drive module 1 for a PCB pin insertion machine provided in an embodiment of the present invention.
[0035] like Figure 1 and Figure 2 As shown, the purpose of this utility model is to provide a displacement drive module 1 for a PCB pin insertion machine to solve the problems mentioned in the background art.
[0036] To achieve the above objectives, the present invention adopts a displacement drive module 1 for a PCB pin insertion machine, comprising a front moving plate 2, a rear fixed plate 3, a drive assembly, and a guide and limit assembly, wherein:
[0037] Both the front moving plate 2 and the rear fixed plate 3 are along the first direction ( Figure 1 Extending along the Z-direction (as shown in the middle), and along the second direction ( Figure 1(As shown in the Y direction) The front moving plate 2 is spaced apart. A connecting assembly and a guide hole 20 are provided on the side of the front moving plate 2 away from the rear fixed plate 3 along the second direction. The connecting assembly is located near the top of the front moving plate 2 and is used to connect the pin insertion mechanism. The guide hole 20 is located below the connecting assembly and extends along the first direction. A driving assembly is located between the front moving plate 2 and the rear fixed plate 3, and is used to drive the front moving plate 2 to move the pin insertion mechanism up and down relative to the rear fixed plate 3 along the first direction to the pin insertion position.
[0038] The guide limiting assembly includes a limiting plate 50, an upper connecting part 51, and a lower connecting part 52. The limiting plate 50 extends along a first direction, is disposed on the same side as the connecting assembly, and is spaced apart from the front moving plate 2 along a second direction. The upper connecting part 51 and the lower connecting part 52 are respectively disposed at the upper and lower ends of the limiting plate 50. The upper connecting part 51 is connected to the top of the rear fixed plate 3, and the lower connecting part 52 passes through the guide waist hole 20 and is connected to the rear fixed plate 3, thereby limiting the movement range of the front moving plate 2 through the cooperation of the lower connecting part 52 and the guide waist hole 20.
[0039] This application provides a displacement drive module 1 for a PCB pin insertion machine. The drive component is located between the front moving plate 2 and the rear fixed plate 3. It can directly drive the front moving plate 2 to move the pin insertion mechanism up and down along a first direction to the pin insertion station. Through the cooperation of the guide hole 20 and the lower connecting part 52, the movement range of the front moving plate 2 can be precisely limited, thereby improving the stability and accuracy of the pin insertion mechanism's movement. The guide and limit component not only plays a guiding role, but also precisely limits the movement of the front moving plate 2 through the structural design of the limit plate 50, the upper connecting part 51 and the lower connecting part 52. This integration of dual functions makes the entire displacement drive module 1 simple in structure and reduces manufacturing costs while ensuring motion accuracy.
[0040] In some embodiments, reference Figure 1 and Figure 2 The drive assembly includes a fixed base 40, a drive motor 41, a coupling 42, and a lead screw 43. The fixed base 40 is located on the top of the rear fixed plate 3 facing the front movable plate 2 along the second direction. The drive motor 41 and the coupling 42 are sequentially located on the top of the fixed base 40 along the first direction. The output end of the drive motor 41 is connected to the lead screw 43 via the coupling 42. The lead screw 43 extends along the first direction, with bearing support seats 44 at both ends, and a lead screw 43 nut is fitted onto each end. The bearing support seats 44 are connected to the rear fixed plate 3, and the lead screw 43 nut is connected to the front movable plate 2, for driving the lead screw 43 nut to move the front movable plate 2 along the first direction via the drive motor 41.
[0041] For example, high-precision displacement control can be achieved through the transmission of the lead screw 43 and nut. The high matching accuracy of the lead screw 43 and nut enables precise conversion of the rotational motion of the motor into the linear motion of the front moving plate 2, thereby improving the positioning accuracy of the pin insertion mechanism.
[0042] In some embodiments, reference Figure 1 and Figure 2 Both the upper connecting part 51 and the lower connecting part 52 are U-shaped pieces, each including a connecting end 53 and a plug-in end 54. The guide hole 20 is located in a third direction ( Figure 1 Two connectors (as shown in the X direction) are spaced apart and corresponding to the insertion end 54. The connecting end 53 of the upper connecting part 51 is connected to the top of the limiting plate 50, and the insertion end 54 is inserted into both ends of the lead screw 43 and connected to the rear fixing plate 3. The connecting end 53 of the lower connecting part 52 is connected to the bottom of the limiting plate 50, and the insertion end 54 is inserted into the guide waist hole 20 and both ends of the lead screw 43, and connected to the rear fixing plate 3. The first direction, the second direction, and the third direction are perpendicular to each other.
[0043] For example, the design of the connecting end 53 and the insertion end 54 of the U-shaped member can effectively distribute the force, making the connection more stable and reducing structural deformation caused by local stress concentration.
[0044] In some embodiments, reference Figure 1 and Figure 2 The connecting assembly includes a positioning plate 21, connecting blocks 22, and a connecting plate 23. The positioning plate 21 is disposed between the front movable plate 2 and the limiting plate 50 along a second direction, with one side connected to the front movable plate 2 along the second direction and the other side having a positioning protrusion 210. The limiting plate 50 has a limiting waist hole 55 corresponding to the positioning protrusion 210, which extends along a third direction and is used to abut against and limit the positioning protrusion 210. The connecting plate 23 extends along a first direction and is disposed on the side of the limiting plate 50 away from the positioning plate 21 along the second direction, and is used to connect the pin insertion mechanism. The connecting blocks 22 are respectively disposed at both ends of the positioning plate 21 along a third direction and are connected to the connecting plate 23.
[0045] For example, the positioning protrusion 210 on the positioning plate 21 cooperates with the limiting hole 55 on the limiting plate 50, which can accurately limit the position of the positioning plate 21 and prevent it from shifting during movement. The limiting hole 55 extends in a third direction and is configured to cooperate with the guide hole 20 for limiting.
[0046] In some embodiments, reference Figure 1 and Figure 2 Along the first direction, the length of the front moving plate 2 is less than the length of the rear fixed plate 3, and the length of the positioning plate 21 is less than the length of the limiting plate 50. Along the third direction, the width of the positioning plate 21 is greater than the width of the limiting plate 50.
[0047] For example, the length of the front moving plate 2 is less than the length of the rear fixed plate 3. This design allows the rear fixed plate 3 to distribute the load and provide more stable support for the entire module. The length of the positioning plate 21 is less than the length of the limiting plate 50, allowing the limiting plate 50 to move flexibly relative to the positioning plate 21. Through the cooperation of the limiting waist hole 55 and the positioning protrusion 210, a precise limiting function is achieved.
[0048] 6. In some embodiments, reference is made to Figure 1 and Figure 2 The guide and limiting assembly also includes a guide rail assembly, which is respectively disposed on both sides of the lead screw 43 along a third direction. The guide rail assembly includes a linear guide rail 60, a first slider 61, and a second slider 62. The linear guide rail 60 extends along a first direction and is disposed on the side of the rear fixed plate 3 facing the front movable plate 2 along a second direction. The first slider 61 and the second slider 62 are spaced apart along the first direction, and one end of each slider along the second direction is slidably connected to the linear guide rail 60, while the other end is connected to the front movable plate 2.
[0049] For example, the linear guide 60 achieves motion through rolling friction, which has a low coefficient of friction and a small difference between dynamic and static friction, enabling high-precision positioning. This characteristic makes the front moving plate 2 move more smoothly along the first direction, reducing vibration and impact, thereby improving the positioning accuracy of the pin insertion mechanism. The first slider 61 and the second slider 62 are spaced apart along the first direction, which can better distribute the load and improve the stability of the movement. Compared with a single slider system, it can more effectively reduce swaying and offset, ensuring the stability of the front moving plate 2 during movement.
[0050] In some embodiments, reference Figure 1 and Figure 2 The guide and limiting assembly also includes a grating detection assembly, which is located on the side of the linear guide rail 60 away from the lead screw 43 along a third direction. The grating detection assembly includes multiple sensing gratings 63 and a metal plate 64. The multiple sensing gratings 63 are spaced apart along a first direction, and the metal plate 64 is located at the end of the first slider 61 away from the lead screw 43 along a third direction and is correspondingly arranged with the sensing gratings 63.
[0051] For example, the grating detection assembly, through the cooperation of the sensing grating 63 and the metal plate 64, can achieve high-precision displacement measurement. The grating detection assembly can monitor the position of the front moving plate 2 in real time, providing accurate displacement data. This allows the control system to adjust motion parameters in a timely manner, ensuring the accuracy of the pin insertion operation.
[0052] In some embodiments, reference Figure 1 and Figure 2The guide and limiting assembly also includes a cable chain assembly 65, which is located on the side of the grating detection assembly away from the lead screw 43 along a third direction. The cable chain assembly 65 includes a cable chain 65, a cable chain fixing plate 66, and a cable chain connecting plate 67. The cable chain fixing plate 66 extends along a first direction and is located on the side of the rear fixing plate 3 along a third direction. The cable chain connecting plate 67 extends along the first direction and is located on the side of the connecting plate 23 along a third direction. The cable chain 65 is located between the cable chain fixing plate 66 and the cable chain connecting plate 67 along a second direction, with both ends connected to the cable chain fixing plate 66 and the cable chain connecting plate 67, respectively.
[0053] For example, the cable chain 65 assembly can secure cables, oil pipes, air pipes, etc., providing physical protection against mechanical damage, chemical corrosion, etc. from the external environment.
[0054] In some embodiments, reference Figure 1 and Figure 2 The displacement drive module 1 also includes a displacement sensor 24, which is located on the side of the front moving plate 2 away from the rear fixed plate 3 along the second direction and below the guide waist hole 20, for detecting the movement distance of the lower connecting part 52 along the first direction.
[0055] For example, the displacement sensor 24 can provide high-precision displacement measurement. By accurately detecting the movement distance of the lower connecting part 52, the displacement sensor 24 can provide real-time feedback to the control system, thereby further optimizing the motion control of the pin insertion machine. This not only improves the positioning accuracy and reliability of the pin insertion machine, but also further enhances the overall performance and production efficiency.
[0056] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.
Claims
1. A displacement drive module for a PCB pin insertion machine, characterized in that, Includes a front moving plate, a rear fixed plate, a drive assembly, and a guide and limit assembly, wherein: Both the front movable plate and the rear fixed plate extend along a first direction and are spaced apart along a second direction. The front movable plate has a connecting component and a guide hole on the side away from the rear fixed plate along the second direction. The connecting component is located near the top of the front movable plate and is used to connect the pin insertion mechanism. The guide hole is located below the connecting component and extends along the first direction. The driving component is located between the front movable plate and the rear fixed plate and is used to drive the front movable plate to move the pin insertion mechanism up and down relative to the rear fixed plate along the first direction to the pin insertion position. The guide limiting assembly includes a limiting plate, an upper connecting part, and a lower connecting part. The limiting plate extends along the first direction, is disposed on the same side as the connecting assembly, and is spaced apart from the front moving plate along the second direction. The upper connecting part and the lower connecting part are respectively disposed at the upper and lower ends of the limiting plate. The upper connecting part is connected to the top of the rear fixed plate, and the lower connecting part passes through the guide waist hole and is connected to the rear fixed plate, which is used to limit the movement range of the front moving plate by cooperating with the guide waist hole.
2. The displacement drive module according to claim 1, characterized in that, The drive assembly includes a fixed base, a drive motor, a coupling, and a lead screw. The fixed base is located on the top of the rear fixed plate facing the front movable plate along the second direction. The drive motor and the coupling are sequentially located on the top of the fixed base along the first direction. The output end of the drive motor at its bottom is connected to the lead screw via the coupling. The lead screw extends along the first direction, with bearing support seats at both ends and a lead screw nut fitted on them. The bearing support seats are connected to the rear fixed plate, and the lead screw nut is connected to the front movable plate, for driving the lead screw nut to move the front movable plate along the first direction via the drive motor.
3. The displacement drive module according to claim 2, characterized in that, Both the upper connecting part and the lower connecting part are U-shaped components. Each U-shaped component includes a connecting end and a plug-in end. Two guide waist holes are spaced apart along a third direction and are correspondingly arranged with the plug-in ends. The connecting end of the upper connecting part is connected to the top end of the limiting plate, and the plug-in end is inserted into both ends of the lead screw and connected to the rear fixing plate. The connecting end of the lower connecting part is connected to the bottom end of the limiting plate, and the plug-in end is inserted into the guide waist holes and both ends of the lead screw, and connected to the rear fixing plate.
4. The displacement drive module according to claim 1, characterized in that, The connecting assembly includes a positioning plate, a connecting block, and a connecting plate. The positioning plate is disposed between the front moving plate and the limiting plate along the second direction, connected to the front moving plate on one side along the second direction, and having a positioning protrusion on the other side. The limiting plate has a limiting waist hole corresponding to the positioning protrusion, which extends along the third direction and is used to abut against and limit the positioning protrusion. The connecting plate extends along the first direction and is disposed on the side of the limiting plate away from the positioning plate along the second direction, for connecting the pin insertion mechanism. The connecting block is disposed at both ends of the positioning plate along the third direction and is connected to the connecting plate.
5. The displacement drive module according to claim 4, characterized in that, Along the first direction, the length of the front moving plate is less than the length of the rear fixed plate, and the length of the positioning plate is less than the length of the limiting plate; along the third direction, the width of the positioning plate is greater than the width of the limiting plate.
6. The displacement drive module according to claim 2, characterized in that, The guide limiting assembly further includes a guide rail assembly, which is respectively disposed on both sides of the lead screw along a third direction, including a linear guide rail, a first slider and a second slider. The linear guide rail extends along the first direction and is disposed on the side of the rear fixed plate facing the front movable plate along the second direction. The first slider and the second slider are spaced apart along the first direction, and one end of each slider along the second direction is slidably connected to the linear guide rail, and the other end of each slider is connected to the front movable plate.
7. The displacement drive module according to claim 6, characterized in that, The guide limiting component further includes a grating detection component, which is located on the side of the linear guide rail away from the lead screw along the third direction, and includes multiple sensing gratings and a metal plate; the multiple sensing gratings are spaced apart along the first direction, and the metal plate is located at the end of the first slider away from the lead screw along the third direction, and is correspondingly arranged with the sensing gratings.
8. The displacement drive module according to claim 7, characterized in that, The guide and limiting assembly further includes a cable chain assembly, which is disposed on the side of the grating detection assembly away from the lead screw along the third direction. The cable chain assembly includes a cable chain, a cable chain fixing plate, and a cable chain connecting plate. The cable chain fixing plate extends along the first direction and is disposed on the side of the rear fixing plate along the third direction. The cable chain connecting plate extends along the first direction and is disposed on the side of the connecting plate along the third direction. The cable chain is disposed along the second direction between the cable chain fixing plate and the cable chain connecting plate, and its two ends are respectively connected to the cable chain fixing plate and the cable chain connecting plate.
9. The displacement drive module according to claim 2, characterized in that, It also includes a displacement sensor, which is located on the side of the front moving plate away from the rear fixed plate along the second direction and below the guide waist hole, for detecting the movement distance of the lower connecting part along the first direction.