Variable pitch modular module slide

Abstract

This invention relates to the field of ball screw slide modules, specifically to a variable pitch module slide, comprising a module frame, a variable pitch mechanism, and a sliding mechanism. The module frame is rectangular, and a mounting cavity is provided at the top of the module frame. The variable pitch mechanism includes an adjustment component and a displacement component. The adjustment component is fixedly disposed on opposite sides inside the mounting cavity, and the displacement component is fixedly disposed on the other opposite sides inside the mounting cavity. The sliding mechanism includes a drive component and a sliding component. The drive component is fixedly disposed on one side of the outer wall end of the module frame, and the sliding component is fixedly disposed on top of the displacement component. The drive component and the sliding component are meshed together. This invention adjusts the distance between two embedded tracks by driving a push rod, and supplies oil and lubricates the ball screw assembly and the embedded tracks through a first oil reservoir and a second oil reservoir, respectively. It is convenient to operate, safe and efficient, and greatly improves the working efficiency of the module slide and the service life of the ball screw.

Description

Technical Field

[0001] This invention relates to the field of lead screw slide modules, and more specifically to a variable pitch module slide. Background Technology

[0002] Ball screws are the most commonly used transmission components in machine tools and precision machinery. Their main function is to convert rotary motion into linear motion or torque into axial reciprocating force. They also feature high precision, reversibility, and high efficiency. Due to their very low frictional resistance, ball screws are widely used in various industrial equipment and precision instruments.

[0003] Currently, the distance between the embedded tracks of the ball screw is not adjustable, which has certain limitations. It is difficult to change the spacing after the embedded tracks are installed. Therefore, the distance needs to be calculated in advance during installation, which is not adaptable enough. At the same time, both the ball screw and the embedded tracks need lubrication to reduce wear during long-term operation. The traditional method is to manually add lubricant, which is time-consuming, laborious, reduces work efficiency, and does not achieve the effect of self-lubrication. Therefore, based on the shortcomings of the existing technology, it is necessary to design a variable-pitch module slide. Summary of the Invention

[0004] The purpose of this invention is to provide a variable pitch module slide.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A variable pitch module slide is provided, including a module frame, a pitch-changing mechanism, and a sliding mechanism. The module frame is rectangular and has a mounting cavity at its top. The pitch-changing mechanism includes an adjustment component and a displacement component. The adjustment component is fixedly disposed on opposite sides inside the mounting cavity and is fixedly connected to one side of the outer wall of the module frame. The displacement component is fixedly disposed on the other opposite sides inside the mounting cavity and is located on top of the adjustment component. The sliding mechanism includes a drive component and a sliding component. The drive component is fixedly disposed on one side of the outer wall of the module frame, and the sliding component is fixedly disposed on top of the displacement component. The drive component and the sliding component are engaged with each other.

[0007] Furthermore, the adjustment assembly includes an adjustment plate, an extension column, a connecting plate, a push rod, two first slide rails and two first slide blocks. The two first slide rails are symmetrically and fixedly arranged on both sides inside the mounting cavity. The two first slide blocks are symmetrically and slidably arranged on the corresponding two first slide rails. The adjustment plate is fixedly arranged horizontally on the two first slide blocks.

[0008] Furthermore, a strip groove is provided on one side of the mounting cavity, one end of the extension column is fixedly set in the middle of one side of the adjusting plate, and the other end of the extension column passes through the strip groove and is fixedly connected to the connecting plate. The extension column and the strip groove are in abutting and sliding connection. The push rod is fixedly set in a horizontal state on one side of the mold frame, and the output shaft of the push rod is fixedly connected to the connecting plate.

[0009] Furthermore, the displacement assembly includes two crossbars, two second slide rails, and four second slide blocks. The two second slide rails are symmetrically and fixedly disposed at both ends of the two first slide rails. The four second slide blocks are symmetrically and slidably disposed on the two second slide rails. The two crossbars are symmetrically and fixedly disposed on the corresponding two sets of second slide blocks.

[0010] Furthermore, the adjustment plate is provided with two movable slots symmetrically and at an angle, and each of the crossbars has a locking slot at the top center. The bottom of each of the two crossbars is integrally formed with an adjustment post, and the two adjustment posts extend into the corresponding two movable slots. Each adjustment post is in contact with and slidably connected to the inner wall of the corresponding movable slot.

[0011] Furthermore, each set of the mounting slots is symmetrically provided with two first oil storage chambers on both sides, and each first oil storage chamber is symmetrically provided with two oil inlet pipes on one side, and the bottom of each first oil storage chamber is provided with several through holes in a linear array.

[0012] Furthermore, the inner walls on both sides of the mounting slot are evenly provided with several receiving slots in a horizontal state. A return spring is welded inside each receiving slot. A telescopic column is welded to the outside of the return spring. An oil supply chamber is provided in the middle of the inside of the telescopic column. An oil inlet hole is connected to the top of the oil supply chamber. The oil inlet hole is staggered and connected to the corresponding through hole.

[0013] Furthermore, the drive assembly includes a base, a motor, a ball screw, and two limiting plates. The two limiting plates are symmetrically and fixedly disposed at the top two ends of the mold frame. The base is horizontally and fixedly disposed on one side of the corresponding limiting plate. The motor is fixedly disposed on the base, and the output shaft of the motor is fixedly connected to one end of the ball screw through a coupling. The other end of the ball screw passes through the two corresponding limiting plates and is rotatably connected to the two limiting plates.

[0014] Furthermore, the sliding assembly includes a sliding platform and two embedded tracks. The two embedded tracks are respectively fixedly installed in two corresponding mounting slots. One end of each of the telescopic columns extends into the corresponding embedded track. The sliding platform consists of a central support and two sliding plates. The two sliding plates are symmetrically and slidably installed in the corresponding two embedded tracks. The central support is T-shaped, and a storage cavity is provided inside the top of the central support.

[0015] Furthermore, the two sliding plates are telescopically slidably disposed on opposite sides of the storage cavity. The bottom of the middle carrier is provided with an internal threaded hole, which is engaged with a ball screw. The middle of the storage cavity is provided with a second oil storage cavity. The bottom of the second oil storage cavity is symmetrically provided with two drip holes. The top of each of the two drip holes is fixedly provided with a buffer mesh, and the bottom of each of the two drip holes is connected to the internal threaded hole. A refueling pipe is fixedly connected to one side of the second oil storage cavity, and one end of the refueling pipe extends through the storage cavity to the outside of the middle carrier.

[0016] The beneficial effects of this invention are:

[0017] 1. When the motor drives the slide, the two slides abut against one end of the telescopic column inside the embedded track, compressing the telescopic column. The telescopic column compresses the internal return spring. At this time, the oil inlet at the top of the telescopic column connects and communicates with the through hole at the bottom of the first oil storage chamber. Thus, the lubricating oil in the first oil storage chamber enters the oil supply chamber inside the telescopic column through the oil inlet, and then the lubricating oil enters the embedded track through the oil supply chamber, thereby lubricating the embedded track. When the motor stops working, the oil inlet and the through hole are misaligned and separated. When the motor is working, when the slide abuts against the telescopic column, the oil inlet and the through hole connect and supply oil, achieving the purpose of self-lubrication.

[0018] 2. When the ball screw drives the intermediate carrier to move, the lubricating oil in the second oil storage chamber is wetted by the buffer mesh and flows into the drip hole. The lubricating oil enters the internal thread hole through the drip hole and lubricates the ball screw. The buffer mesh has the function of absorbing lubricating oil. When the motor stops working and the carrier is stationary, the buffer mesh acts as a barrier to lubricating oil. When the intermediate carrier moves and is subjected to slight vibration, the buffer mesh will drip lubricating oil into the drip hole. The lubricating oil enters the internal thread hole through the drip hole, thereby achieving the purpose of self-lubrication of the ball screw.

[0019] 3. When the push rod is activated, the output shaft of the push rod drives the adjusting plate to slide on the two first slide rails through the connecting plate and the extension column. When the adjusting plate moves, the movable groove on the adjusting plate abuts against the adjusting column at the bottom of the crossbar, causing the adjusting column to move horizontally and longitudinally. This causes the adjusting column to drive the adjusting plate to move on the second slide rail, thereby achieving the purpose of adjusting the distance between the two embedded rails.

[0020] This invention adjusts the spacing between the two embedded tracks by driving a push rod, and supplies oil and lubricates the ball screw assembly and the embedded tracks through the first and second oil storage chambers, respectively. It is convenient to operate, safe and efficient, and greatly improves the working efficiency of the module slide and the service life of the ball screw. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the mold frame and pitch-changing mechanism of the present invention;

[0024] Figure 3 This is a three-dimensional structural diagram of the pitch-changing mechanism of the present invention;

[0025] Figure 4 This is a partial disassembly diagram of the crossbar of the present invention;

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0027] Figure 6 This is a top view of the crossbar of the present invention;

[0028] Figure 7 for Figure 6 Sectional view along line BB;

[0029] Figure 8 This is a three-dimensional structural diagram of the sliding mechanism of the present invention;

[0030] Figure 9 This is a schematic diagram of the slide table of the present invention disassembled;

[0031] Figure 10 This is a top view of the middle carrier of the present invention;

[0032] Figure 11 for Figure 10 A cross-sectional view along the CC line;

[0033] In the picture:

[0034] Frame 1, mounting cavity 10, strip groove 11;

[0035] Variable pitch mechanism 2;

[0036] Adjustment component 20, adjustment plate 200, movable groove 2000, extension column 201, connecting plate 202, push rod 203, first slide rail 204, first slide block 205;

[0037] Displacement assembly 21, crossbar 210, mounting slot 2100, adjusting column 2101, first oil storage chamber 2102, through hole 2103, oil inlet pipe 2104, receiving groove 2105, second slide rail 211, second slide block 212, return spring 213, telescopic column 214, oil supply chamber 2140, oil inlet hole 2141;

[0038] Sliding mechanism 3;

[0039] Drive assembly 30, base 300, motor 301, ball screw 302, limit plate 303;

[0040] Sliding assembly 31, slide table 310, middle carrier 3100, slide plate 3101, storage cavity 3102, internal threaded hole 3103, second oil storage cavity 3104, drip hole 3105, buffer net 3106, refueling pipe 3107, embedded track 311. Detailed Implementation

[0041] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0043] This invention provides a technical solution: (Refer to...) Figure 1 The variable pitch module slide shown includes a module frame 1, a variable pitch mechanism 2, and a sliding mechanism 3. The module frame 1 is rectangular and has a mounting cavity 10 on its top. The variable pitch mechanism 2 includes an adjustment component 20 and a displacement component 21. The adjustment component 20 is fixedly disposed on opposite sides inside the mounting cavity 10 and is fixedly connected to one side of the outer wall of the module frame 1. The displacement component 21 is fixedly disposed on the other opposite sides inside the mounting cavity 10 and is located on top of the adjustment component 20. The sliding mechanism 3 includes a drive component 30 and a sliding component 31. The drive component 30 is fixedly disposed on one side of the outer wall of the module frame 1, and the sliding component 31 is fixedly disposed on top of the displacement component 21. The drive component 30 and the sliding component 31 are engaged and connected.

[0044] Reference Figures 2 to 3The adjustment assembly 20 shown includes an adjustment plate 200, an extension column 201, a connecting plate 202, a push rod 203, two first slide rails 204, and two first slide blocks 205. The first slide rails 204 provide a limiting sliding carrier. The two first slide rails 204 are symmetrically and fixedly arranged on both sides inside the mounting cavity 10. The two first slide blocks 205 are symmetrically and slidably arranged on the corresponding two first slide rails 204. The adjustment plate 200 is horizontally and fixedly arranged on the two first slide blocks 205. A strip groove 11 is provided on one side of the mounting cavity 10. The strip groove 11 provides movement clearance for the extension column 201. One end of the extension column 201 is fixedly arranged in the middle of one side of the adjustment plate 200. The other end of 01 passes through the strip groove 11 and is fixedly connected to the connecting plate 202. The extension column 201 is slidably connected to the strip groove 11. The push rod 203 is fixedly set on one side of the mold frame 1 in a horizontal state, and the output shaft of the push rod 203 is fixedly connected to the connecting plate 202. When the push rod 203 is started, the output shaft of the push rod 203 drives the connecting plate 202 and the extension column 201 to move along the strip groove 11. The extension column 201 drives the adjusting plate 200 to move. The adjusting plate 200 slides at the upper limit of the two first slide rails 204 through the first slide blocks 205 on both sides of the bottom. When the adjusting plate 200 moves, the two inclined movable grooves 2000 drive the adjusting column 2101 at the bottom of the two crossbars 210 to move horizontally and longitudinally.

[0045] Reference Figures 3 to 5 The displacement assembly 21 shown includes two crossbars 210, two second slide rails 211, and four second slide blocks 212. The two second slide rails 211 provide limiting sliding carriers for the two second slide blocks 212. The two second slide rails 211 are symmetrically and fixedly arranged at both ends of the two first slide rails 204. The four second slide blocks 212 are symmetrically and slidingly arranged on the two second slide rails 211 in pairs. The two crossbars 210 are symmetrically and fixedly arranged on the corresponding two sets of second slide blocks 212. The adjusting plate 200 is symmetrically and obliquely provided with two movable grooves 2000. The movable grooves 2000 are connected to the adjusting column 2101. The sliding contact causes the adjustment plate 200 to move. Each crossbar 210 has a locking groove 2100 at the top center, which provides a fixed installation space for the embedded track 311. The bottom of each crossbar 210 is integrally formed with an adjustment column 2101. Both adjustment columns 2101 extend into the corresponding two movable slots 2000, and each adjustment column 2101 is in contact with the inner wall of the corresponding movable slot 2000. When the adjustment column 2101 moves horizontally and longitudinally, the two adjustment columns 2101 drive the two crossbars 210 to move towards each other or away from each other along the second slide rail 211.

[0046] Reference Figure 4 , Figure 6 and Figure 7Each set of mounting slots 2100 shown has two symmetrically arranged first oil storage chambers 2102 on both sides. The first oil storage chambers 2102 are used to store lubricating oil for the embedded track 311. Each first oil storage chamber 2102 has two symmetrically arranged oil inlet pipes 2104 on one side. When the first oil storage chamber 2102 is short of oil, it can be added through the oil inlet pipes 2104. The bottom of each first oil storage chamber 2102 has several through holes 2103 arranged in a linear array. The through holes 2103 are designed to be misaligned with the oil inlet holes 2141 on the top of the telescopic column 214. The inner walls of both sides of the mounting slot 2100 have several horizontally evenly arranged receiving slots 2105. The receiving slots 2105 provide installation space for the return spring 213 and the telescopic column 214. Each receiving slot 2105 is welded inside. A return spring 213 is connected, and a telescopic column 214 is welded to the outside of the return spring 213. An oil supply chamber 2140 is provided in the middle of the inside of the telescopic column 2140. An oil inlet hole 2141 is connected to the top of the oil supply chamber 2140. The oil inlet hole 2141 is misaligned with the corresponding through hole 2103. When the slide plate 3101 abuts against the telescopic column 214, the telescopic column 214 compresses the return spring 213 inside. At this time, the oil inlet hole 2141 at the top of the telescopic column 214 connects and communicates with the through hole 2103 at the bottom of the first oil storage chamber 2102. Thus, the lubricating oil in the first oil storage chamber 2102 enters the oil supply chamber 2140 inside the telescopic column 214 through the oil inlet hole 2141, and then the lubricating oil enters the embedded track 311 through the oil supply chamber 2140 and plays a lubricating role.

[0047] Reference Figure 8 The drive assembly 30 shown includes a base 300, a motor 301, a ball screw 302, and two limiting plates 303. The base 300 provides a fixed mounting carrier for the motor 301, and the two limiting plates 303 provide a limiting carrier for the rotation of the ball screw 302. The two limiting plates 303 are symmetrically and fixedly disposed at both ends of the top of the mold frame 1. The base 300 is horizontally fixedly disposed on one side of the corresponding limiting plate 303, and the motor 301 is fixedly disposed on the base 300. Furthermore, the output shaft of the motor 301 is fixedly connected to one end of the ball screw 302 via a coupling. The other end of the ball screw 302 passes through two corresponding limit plates 303 and is rotatably connected to the two limit plates 303. When the motor 301 starts, the output shaft of the motor 301 drives the ball screw 302 to rotate via the coupling. The ball screw 302 engages with the internal threaded hole 3103, thereby driving the slide table 310 to slide within the two embedded tracks 311.

[0048] Reference Figures 9 to 11The sliding assembly 31 shown includes a slide table 310 and two embedded tracks 311. The two embedded tracks 311 are respectively fixedly installed in two corresponding mounting slots 2100. One end of each of the several telescopic columns 214 extends into the corresponding embedded track 311. The slide table 310 consists of a central support 3100 and two sliding plates 3101. The central support 3100 provides a storage carrier for the opposite ends of the two sliding plates 3101. The two sliding plates 3101 are symmetrically and slidably installed in the corresponding two embedded tracks 311. The central support 3100... The ball screw 302 is T-shaped, with a receiving cavity 3102 inside the top of the middle carrier 3100. Two sliding plates 3101 are telescopically slidably disposed on opposite sides of the receiving cavity 3102. The bottom of the middle carrier 3100 has an internal threaded hole 3103, which meshes with the ball screw 302. The middle of the receiving cavity 3102 has a second oil storage cavity 3104, which provides storage space for the lubricating oil required by the ball screw 302. The bottom of the second oil storage cavity 3104 has two symmetrically arranged... Two drip holes 3105 are provided, each top of which is fixedly equipped with a buffer mesh 3106, and the bottom of each drip hole 3105 is connected to an internal threaded hole 3103. A refueling pipe 3107 is fixedly connected to one side of the second oil storage chamber 3104. One end of the refueling pipe 3107 extends through the receiving cavity 3102 to the outside of the intermediate support 3100. When the ball screw 302 moves the intermediate support 3100, the lubricating oil in the second oil storage chamber 3104 is wetted by the buffer mesh 3106 and flows into the drip holes 3105. The lubricating oil enters the internal threaded hole 3103 through the dripping hole 3105 and lubricates the ball screw 302. The buffer mesh 3106 has the function of absorbing lubricating oil. When the motor 301 stops working and the carrier 3100 is stationary, the buffer mesh 3106 acts as a barrier to lubricating oil. When the carrier 3100 moves and is subjected to slight vibration, the buffer mesh 3106 will drip lubricating oil into the dripping hole 3105. The lubricating oil enters the internal threaded hole 3103 through the dripping hole 3105, thereby achieving self-lubrication of the ball screw 302.

[0049] Working principle: After being driven by motor 301, the output shaft of motor 301 drives ball screw 302 to rotate through coupling. Ball screw 302 engages with internal thread hole 3103, thereby driving slide table 310 to slide within two embedded tracks 311. When the two slide plates 3101 abut against one end of telescopic column 214 in embedded track 311, telescopic column 214 is compressed. Telescopic column 214 compresses the internal return spring 213. At this time, oil inlet hole 2141 at the top of telescopic column 214 connects and communicates with through hole 2103 at the bottom of first oil storage chamber 2102. Thus, lubricating oil in first oil storage chamber 2102 enters oil supply chamber 2140 inside telescopic column 214 through oil inlet hole 2141, and then lubricating oil enters embedded track 311 through oil supply chamber 2140, playing a lubricating role. When ball screw 302 drives intermediate carrier 3100 to move, the oil in second oil storage chamber 3104... Lubricating oil is soaked in the buffer mesh 3106 and flows into the drip hole 3105. The lubricating oil enters the internal thread hole 3103 through the drip hole 3105 and lubricates the ball screw 302. When it is necessary to adjust the distance between the two embedded tracks 311, the push rod 203 is activated. The output shaft of the push rod 203 drives the connecting plate 202 and the extension column 201 to move along the strip groove 11. The extension column 201 drives the adjusting plate 200 to move. The adjusting plate 200 slides at the upper limit of the two first slide rails 204 through the first slide blocks 205 on both sides of the bottom. When the adjusting plate 200 moves, the two inclined movable grooves 2000 drive the adjusting column 2101 at the bottom of the two crossbars 210 to move horizontally and longitudinally. Thus, the two adjusting columns 2101 drive the two crossbars 210 to move towards each other or away from each other. One end of the two sliding plates 3101 also moves telescopically in the receiving cavity 3102, thereby adjusting the distance between the two embedded tracks 311.

Claims

1. A variable-pitch die set sliding table comprising a die frame (1), a variable-pitch mechanism (2) and a sliding mechanism (3), characterized in that, The mold frame (1) is rectangular and has a mounting cavity (10) at the top. The pitch mechanism (2) includes an adjustment component (20) and a displacement component (21). The adjustment component (20) is fixedly disposed on opposite sides inside the mounting cavity (10) and is fixedly connected to one side of the outer wall of the mold frame (1). The displacement component (21) is fixedly disposed on the other opposite sides inside the mounting cavity (10) and is located on top of the adjustment component (20). The sliding mechanism (3) includes a drive component (30) and a sliding component (31). The drive component (30) is fixedly disposed on one side of the outer wall end of the mold frame (1), and the sliding component (31) is fixedly disposed on top of the displacement component (21). The drive component (30) and the sliding component (31) are engaged and connected. The adjustment assembly (20) includes an adjustment plate (200), an extension column (201), a connecting plate (202), a push rod (203), two first slide rails (204) and two first slide blocks (205). The two first slide rails (204) are symmetrically and fixedly arranged on both sides inside the mounting cavity (10). The two first slide blocks (205) are symmetrically and slidably arranged on the corresponding two first slide rails (204). The adjustment plate (200) is fixedly arranged on the two first slide blocks (205) in a horizontal state. The displacement component (21) includes two crossbars (210), two second slide rails (211), and four second slide blocks (212). The two second slide rails (211) are symmetrically and fixedly disposed at both ends of the two first slide rails (204). The four second slide blocks (212) are symmetrically and slidably disposed on the two second slide rails (211) in pairs. The two crossbars (210) are symmetrically and fixedly disposed on the corresponding two sets of second slide blocks (212). The adjusting plate (200) is symmetrically and obliquely provided with two movable slots (2000). Each of the crossbars (210) has a locking slot (2100) at the top center. The bottom of each of the two crossbars (210) is integrally formed with an adjusting post (2101). Both adjusting posts (2101) extend into the corresponding two movable slots (2000), and each adjusting post (2101) is in sliding contact with the inner wall of the corresponding movable slot (2000).

2. The variable pitch module slide of claim 1, wherein, The mounting cavity (10) has a strip groove (11) on one side. One end of the extension column (201) is fixedly set in the middle of one side of the adjustment plate (200), and the other end of the extension column (201) passes through the strip groove (11) and is fixedly connected to the connecting plate (202). The extension column (201) and the strip groove (11) are in abutting and sliding connection. The push rod (203) is fixedly set in a horizontal state on one side of the mold frame (1), and the output shaft of the push rod (203) is fixedly connected to the connecting plate (202).

3. The variable pitch module slide of claim 1, wherein, Each set of the mounting slots (2100) has two first oil storage chambers (2102) symmetrically arranged on both sides. Each first oil storage chamber (2102) has two oil inlet pipes (2104) symmetrically arranged on one side. The bottom of each first oil storage chamber (2102) has several through holes (2103) arranged in a linear array.

4. The variable pitch module slide of claim 3, wherein, The inner walls of the mounting slot (2100) are horizontally and evenly provided with a number of receiving slots (2105). Each receiving slot (2105) is welded with a return spring (213). The return spring (213) is welded with a telescopic column (214). The telescopic column (214) is provided with an oil supply chamber (2140) in the middle. The top of the oil supply chamber (2140) is connected to an oil inlet hole (2141). The oil inlet hole (2141) is staggered and connected to the corresponding through hole (2103).

5. The variable pitch module slide of claim 4, wherein, The drive assembly (30) includes a base (300), a motor (301), a ball screw (302), and two limiting plates (303). The two limiting plates (303) are symmetrically and fixedly disposed at the top two ends of the mold frame (1). The base (300) is fixedly disposed horizontally on one side of the corresponding limiting plate (303). The motor (301) is fixedly disposed on the base (300), and the output shaft of the motor (301) is fixedly connected to one end of the ball screw (302) through a coupling. The other end of the ball screw (302) passes through the two corresponding limiting plates (303) and is rotatably connected to the two limiting plates (303).

6. The variable pitch module slide of claim 5, wherein, The sliding assembly (31) includes a slide (310) and two embedded tracks (311). The two embedded tracks (311) are respectively fixedly installed in two corresponding mounting slots (2100). One end of each of the telescopic columns (214) extends into the corresponding embedded track (311). The slide (310) is composed of a central support (3100) and two sliding plates (3101). The two sliding plates (3101) are symmetrically and limitedly slidably installed in the corresponding two embedded tracks (311). The central support (3100) is T-shaped, and a storage cavity (3102) is provided inside the top of the central support (3100).

7. The variable pitch module slide of claim 6, wherein, The two sliding plates (3101) are telescopically slidably disposed on opposite sides of the storage cavity (3102). The bottom of the middle carrier (3100) is provided with an internal threaded hole (3103), which is engaged with the ball screw (302). The middle part of the storage cavity (3102) is provided with a second oil storage cavity (3104). The bottom of the second oil storage cavity (3104) is symmetrically provided with two drip holes (3105). The top of each of the two drip holes (3105) is fixedly provided with a buffer mesh (3106), and the bottom of each of the two drip holes (3105) is connected to the internal threaded hole (3103). One side of the second oil storage cavity (3104) is fixedly connected with a refueling pipe (3107), and one end of the refueling pipe (3107) extends through the storage cavity (3102) to the outside of the middle carrier (3100).

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