A running-in machine for a semi-automatic production line of automobile seat slide rails

Abstract

This invention relates to the field of automotive seat slide rail manufacturing technology, and discloses a break-in machine for a semi-automatic production line of automotive seat slide rails. This invention has the following advantages and effects: When it is necessary to adjust the travel distance of the inner track relative to the outer track of the automotive seat slide rail, the rotation of the polygonal end is first unlocked by a limiting structure; then, a tool is inserted into the internal hexagonal hole of the polygonal end to rotate the adjusting screw. During the rotation of the adjusting screw, the position of the threaded connection between the adjusting screw and the fixed seat changes, thereby changing the position of the adjusting seat relative to the fixed seat, thus achieving adjustment of the position of the adjusting seat; finally, the rotation of the polygonal end is restricted by the limiting mechanism to prevent loosening of the threaded connection of the adjusting screw; therefore, it has the function of conveniently adjusting the travel distance of the inner track relative to the outer track.

Description

Technical Field

[0001] This invention relates to the field of automotive seat slide rail manufacturing technology, and in particular to a break-in machine for a semi-automatic production line of automotive seat slide rails. Background Technology

[0002] The manufacturing process of automotive seat slide rails includes assembly, break-in, final assembly, and testing. First, the inner and outer rails are placed in their respective positions on the assembly machine, which then assembles them together. Next, a break-in machine causes the inner and outer rails to repeatedly reciprocate, breaking them in. Then, components such as stops and limiters are assembled onto the slide rail using the assembly machine. Finally, the slide rails are tested using a testing machine.

[0003] For example, Chinese patent application CN112372438A, published on February 19, 2021, discloses "A Car Seat Slide Rail Break-in Machine." This machine utilizes a drive mechanism to propel a downward positioning mechanism and an inner slide rail in horizontal reciprocating motion, achieving automatic break-in of the inner and outer slide rails, thus improving production efficiency and product quality. When the hinge point of the crank wheel and connecting rod is at the leftmost and rightmost ends of the crank wheel, the inner slide rail is at the leftmost and rightmost ends of its moving state. In other words, the travel distance of the inner rail relative to the outer rail depends on the distance from the hinge point of the crank wheel and connecting rod to the center point of the crank wheel.

[0004] However, when adjusting the hinge point of the crank wheel and connecting rod as described in the above patent, it is necessary to first release the two from their fixation, and then fix them again when they are adjusted to the appropriate position, which is inconvenient to operate. Summary of the Invention

[0005] The purpose of this invention is to provide a break-in machine for a semi-automatic production line of automotive seat slide rails, which has the function of conveniently adjusting the travel of the inner rail relative to the outer rail.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a break-in machine for a semi-automatic production line of automotive seat slide rails, comprising a worktable, a support and positioning mechanism for fixing the outer track of the automotive seat slide rail on the worktable surface, a sliding plate horizontally slidably disposed on the worktable, a pressing and positioning mechanism for fixing the inner track of the automotive seat slide rail on the sliding plate, and a drive mechanism disposed between the worktable and the sliding plate and driving the sliding plate to reciprocate horizontally to drive the inner track of the automotive seat slide rail to reciprocate horizontally. The drive mechanism includes a mounting base disposed on the worktable, a rotating shaft rotatably connected to the mounting base and protruding from the mounting base at both ends, and a belt mounted on the worktable and connected to one end of the rotating shaft via a belt. The device comprises a geared motor, a crank wheel located at the other end of a rotating shaft, and a connecting rod hinged at one end to the crank wheel and at the other end to a sliding plate. The crank wheel has a through-groove extending radially on its side away from the mounting base. A fixed seat partially embedded in the through-groove is provided on the crank wheel. An adjusting seat is slidably disposed within the through-groove. An adjusting screw, threaded in the middle to the fixed seat and rotatably connected at one end to the adjusting seat, is provided between the fixed seat and the adjusting seat. The end of the adjusting screw away from the adjusting seat is a regular polygonal end with an internal hexagonal hole. A limiting mechanism is provided between the through-groove and the regular polygonal end to restrict or unlock the rotation of the regular polygonal end. The connecting rod is hinged to the adjusting seat at its end near the crank wheel.

[0007] By adopting the above technical solution, when it is necessary to adjust the travel distance of the inner track relative to the outer track of the car seat slide rail, the rotation of the polygonal end is first unlocked by the limiting structure; then, the adjusting screw is rotated by inserting a tool into the internal hexagonal hole of the polygonal end. During the rotation of the adjusting screw, the position of the threaded connection between the adjusting screw and the fixed seat changes, thereby changing the position of the adjusting seat to the fixed seat, so as to adjust the position of the adjusting seat; finally, the rotation of the polygonal end is restricted by the limiting mechanism to prevent the threaded connection of the adjusting screw from loosening; therefore, it has the function of conveniently adjusting the travel distance of the inner track relative to the outer track.

[0008] A further configuration of the present invention is as follows: the limiting mechanism includes a sliding sleeve slidably connected in the through groove and sleeved on the adjusting screw, and a first compression spring sleeved on the adjusting screw and with both ends pressed against the fixed seat and the sliding sleeve. The end of the sliding sleeve away from the fixed seat is provided with a regular polygonal positioning groove that matches the regular polygonal end. When the regular polygonal end is aligned with the regular polygonal positioning groove, the sliding sleeve moves toward the direction closer to the regular polygonal end under the action of the first compression spring so that the regular polygonal end is embedded in the regular polygonal positioning groove.

[0009] By adopting the above technical solution, the limiting mechanism includes a sliding sleeve and a first compression spring. When the sliding sleeve moves toward the direction closer to the fixed seat after overcoming the action of the first compression spring, the regular polygonal positioning groove on the sliding sleeve gradually separates from the regular polygonal end of the adjusting screw, thereby unlocking the rotation of the regular polygonal end. At this time, the adjusting screw can be rotated by inserting a tool into the internal hexagonal hole of the regular polygon. After the adjusting screw is adjusted, the sliding sleeve moves toward the direction closer to the regular polygonal end under the reset action of the first compression spring. When the regular polygonal end is aligned with the regular polygonal positioning groove, the regular polygonal end can be embedded in the regular polygonal positioning groove, thereby restricting the rotation of the regular polygonal end.

[0010] A further feature of the present invention is that the sliding sleeve is provided with a positioning component that keeps the extension direction of the connecting rod and the extension direction of the through groove consistent, and the line connecting the center of the crank wheel, the connecting rod and the hinge point of the sliding plate extends in the horizontal direction.

[0011] By adopting the above technical solution, the line connecting the center of the crankshaft, the connecting rod, and the hinge point of the sliding plate extends horizontally. Because when the hinge point of the crankshaft (specifically, the adjusting seat) and the connecting rod is at the leftmost and rightmost ends of the crankshaft, the inner slide rail is at the leftmost and rightmost ends of its moving state. In other words, the travel distance of the inner slide rail relative to the outer slide rail depends on the distance from the hinge point of the crankshaft (specifically, the adjusting seat) and the connecting rod to the center point of the crankshaft. The positioning assembly ensures that the extension direction of the connecting rod and the extension direction of the through groove are consistent. When the crankshaft... When the hinge point between the crank wheel (specifically, the adjusting seat) and the connecting rod is on the side of the crank wheel away from the sliding plate, the position of the hinge point between the crank wheel (specifically, the adjusting seat) and the connecting rod at this time represents one limit of the inner slide rail's movement. When the hinge point between the crank wheel (specifically, the adjusting seat) and the connecting rod is on the side of the crank wheel closer to the sliding plate, the position of the hinge point between the crank wheel (specifically, the adjusting seat) and the connecting rod at this time represents another limit of the inner slide rail's movement. Therefore, it has the function of conveniently adjusting and determining the limits of the inner slide rail's movement.

[0012] A further configuration of the present invention is as follows: the crank wheel is provided with connecting portions on both sides of the through groove; the connecting portions are provided with a first sliding groove extending along the extension direction of the through groove; the connecting portions are provided with a second sliding groove communicating with the end of the first sliding groove near the fixed seat and extending along the centerline direction of the crank wheel; the connecting rod is provided with an oblong hole extending along its length direction; the positioning assembly includes a positioning block telescopically disposed on the sliding sleeve along the centerline direction of the crank wheel, a sliding shaft disposed on both sides of the positioning block and slidably connected in the first or second sliding groove, and a second compression spring disposed between the sliding sleeve and the positioning block; the positioning block is provided with a positioning part for embedding in the oblong hole; when the sliding shaft moves to the second sliding groove, the positioning block and the sliding shaft disengage from the second sliding groove under the action of the second compression spring; the positioning part is used to embed in the oblong hole so that the extension direction of the connecting rod is consistent with the extension direction of the through groove; at the same time, the positioning part does not interfere with the adjustment of the adjusting seat within the set range after being embedded in the oblong hole.

[0013] By adopting the above technical solution, when the hinge point of the crank wheel (specifically the adjusting seat) and the connecting rod is on the side of the crank wheel away from the sliding plate, the position of the hinge point of the crank wheel (specifically the adjusting seat) and the connecting rod at this time is the limit of the inner slide rail in the moving state. By setting the positioning component, the extension direction of the connecting rod and the extension direction of the through groove are kept consistent in this state. The specific operation process is as follows: First, overcome the elastic force of the first compression spring so that the sliding sleeve moves towards the direction closer to the fixed seat. The sliding shaft moves along the first slide groove with the sliding sleeve. When the sliding shaft moves to the second slide groove, under the action of the elastic force of the second compression spring, it moves along the second slide groove and disengages from the second slide groove, so that the positioning part on the positioning block is embedded in the waist-shaped hole, so that the extension direction of the connecting rod and the extension direction of the through groove are kept consistent.

[0014] A further provision of the present invention is that when the positioning part is embedded in the waist-shaped hole and moves to the end of the waist-shaped hole under the action of the first compression spring, the regular polygonal positioning groove of the sliding sleeve is spaced apart from the regular polygonal end of the adjusting screw.

[0015] By adopting the above technical solution, when rotating the adjusting screw to drive the adjusting seat to move, it is necessary to separate the sliding sleeve and the polygonal end of the adjusting screw. At this time, the setting of the oblong hole on the connecting rod can restrict the sliding sleeve from moving away from the fixed seat, so as to ensure that the polygonal positioning groove of the sliding sleeve and the polygonal end of the adjusting screw are in a spaced-out state. At the same time, during the adjustment process, the distance that the polygonal end of the adjusting screw and the oblong hole of the connecting rod move in the same direction is consistent, so that the sliding sleeve and the polygonal end of the adjusting screw can always be kept separated, which facilitates the rotation of the adjusting screw.

[0016] A further embodiment of the present invention is that the support and positioning mechanism includes two slide rails disposed on the worktable and extending along the front-rear direction of the worktable, a slide seat slidably connected between the two slide rails, a lower clamp disposed on the slide seat and for fixing the outer track of the car seat slide rail, and a drive cylinder disposed between the worktable and the slide seat. The lower clamp allows the outer track of the car seat slide rail to be embedded and fastened with bolts.

[0017] A further embodiment of the present invention is that the pressing and positioning mechanism includes a connecting seat disposed on a sliding plate, a lifting cylinder disposed on the connecting seat, and an upper clamp disposed at the lower end of the lifting cylinder for fixing the inner track of the car seat slide rail. The upper clamp allows the inner track of the car seat slide rail to be embedded and fastened with bolts.

[0018] A further provision of the present invention is that: a slide bar is provided on the worktable above the sliding plate and extending in the horizontal direction, a slider is provided on the slide bar, and the cylinder body of the lifting cylinder is fixed to the slider.

[0019] By adopting the above technical solution, the outer track of the car seat slide rail is first fixed by the support positioning mechanism, and the lower clamp can be positioned close to the front of the workbench during installation to facilitate the installation by the staff. After installation, the lower clamp can be moved under the pressure positioning mechanism by the drive cylinder to move the sliding seat. Then, the inner track of the car seat slide rail is fixed by the pressure positioning mechanism to facilitate subsequent break-in. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a partial structural diagram of the connection between the crank wheel and the connecting rod in this invention;

[0023] Figure 3 This is a schematic diagram of the crank wheel structure in this invention;

[0024] Figure 4 yes Figure 3 A magnified view of the area located at point A;

[0025] Figure 5 This is a side view of the structure after the sliding sleeve and positioning components are connected.

[0026] In the diagram: 1. Workbench; 21. Slide rail; 22. Sliding seat; 23. Lower clamp; 24. Drive cylinder; 3. Sliding plate; 41. Connecting seat; 42. Lifting cylinder; 43. Upper clamp; 44. Slide rod; 45. Slider; 51. Mounting seat; 52. Rotary shaft; 53. Gear motor; 54. Crank wheel; 541. Through slot; 542. Fixed seat; 543. Adjusting seat; 544. Adjusting screw; 5441. Regular polygonal end; 545. Connecting part; 5451. First slide groove; 5452. Second slide groove; 55. Connecting rod; 551. Waist-shaped hole; 56. Limiting mechanism; 561. Sliding sleeve; 5611. Regular polygonal positioning groove; 562. First compression spring; 57. Positioning assembly; 571. Positioning block; 5711. Positioning part; 572. Sliding shaft; 573. Second compression spring. Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] Example: A break-in machine for a semi-automatic production line of automotive seat slide rails, such as... Figure 1 As shown, it includes a worktable 1, a support and positioning mechanism for fixing the outer rail of the car seat slide rail on the worktable 1, a sliding plate 3 that is horizontally slidably disposed on the worktable 1, a pressing and positioning mechanism for fixing the inner rail of the car seat slide rail on the sliding plate 3, and a drive mechanism disposed between the worktable 1 and the sliding plate 3 that drives the sliding plate 3 to reciprocate horizontally to drive the inner rail of the car seat slide rail to reciprocate horizontally.

[0029] like Figure 1 As shown, the support positioning mechanism includes two slide rails 21 mounted on the worktable 1 and extending along the front-rear direction of the worktable 1, a sliding seat 22 slidably connected between the two slide rails 21, a lower clamp 23 mounted on the sliding seat 22 for fixing the outer track of the car seat slide rail, and a drive cylinder 24 mounted between the worktable 1 and the sliding seat 22. The lower clamp 23 allows the outer track of the car seat slide rail to be inserted and fastened with bolts. The pressing positioning mechanism includes a connecting seat 41 mounted on the sliding plate 3, a lifting cylinder 42 mounted on the connecting seat 41, and an upper clamp 43 mounted at the lower end of the lifting cylinder 42 for fixing the inner track of the car seat slide rail. The upper clamp 43 allows the inner track of the car seat slide rail to be inserted and fastened with bolts. Meanwhile, a slide rod 44 is mounted on the worktable 1 above the sliding plate 3 and extending horizontally. A slider 45 is mounted on the slide rod 44, and the cylinder body of the lifting cylinder 42 is fixed to the slider 45.

[0030] like Figure 1 and Figure 2 As shown, the drive mechanism includes a mounting base 51 mounted on the workbench 1, a rotating shaft 52 rotatably connected to the mounting base 51 and protruding from the mounting base 51 at both ends, a reduction motor 53 mounted on the workbench 1 and driven by a belt at one end of the rotating shaft 52, a crank wheel 54 mounted at the other end of the rotating shaft 52, and a connecting rod 55 hinged at one end to the crank wheel 54 and at the other end to the sliding plate 3.

[0031] like Figures 2 to 4 As shown, a through groove 541 extending radially is provided on the side of the crank wheel 54 away from the mounting base 51. A fixed base 542 is provided on the crank wheel 54, partially embedded in the through groove 541. An adjusting base 543 is slidably disposed in the through groove 541. An adjusting screw 544 is provided between the fixed base 542 and the adjusting base 543, with its middle threadedly connected to the fixed base 542 and one end rotatably connected to the adjusting base 543. The end of the adjusting screw 544 away from the adjusting base 543 is a regular polygonal end 5441 with an internal hexagonal hole. A limiting mechanism 56 is provided between the through groove 541 and the regular polygonal end 5441 to restrict or unlock the rotation of the regular polygonal end 5441. The end of the connecting rod 55 near the crank wheel 54 is hinged to the adjusting base 543. The limiting mechanism 56 includes a sliding sleeve 561 that is slidably connected in the through groove 541 and sleeved on the adjusting screw 544, and a first compression spring 562 that is sleeved on the adjusting screw 544 and whose two ends are pressed between the fixed seat 542 and the sliding sleeve 561. The end of the sliding sleeve 561 away from the fixed seat 542 is provided with a regular polygonal positioning groove 5611 that matches the regular polygonal end 5441. When the regular polygonal end 5441 is aligned with the regular polygonal positioning groove 5611, the sliding sleeve 561 moves toward the direction closer to the regular polygonal end 5441 under the action of the first compression spring 562 so that the regular polygonal end 5441 is embedded in the regular polygonal positioning groove 5611.

[0032] like Figures 2 to 5 As shown, the sliding sleeve 561 is provided with a positioning component 57 that keeps the extension direction of the driving connecting rod 55 consistent with the extension direction of the through groove 541. The line connecting the center of the crank wheel 54, the connecting rod 55, and the hinge point of the sliding plate 3 extends horizontally (see...). Figure 1The crank wheel 54 is provided with connecting portions 545 on both sides of the through groove 541. The connecting portions 545 are provided with a first sliding groove 5451 extending along the extension direction of the through groove 541. The connecting portions 545 are provided with a second sliding groove 5452 that communicates with the end of the first sliding groove 5451 near the fixed seat 542 and extends along the center line of the crank wheel 54. The connecting rod 55 is provided with a waist-shaped hole 551 extending along its length. The positioning assembly 57 includes a positioning block 571 that is telescopically disposed on the sliding sleeve 561 along the center line of the crank wheel 54 (two bolts are passed through both sides of the positioning block 571 and tightened onto the sliding sleeve 561 to limit the telescopic stroke of the positioning block 571), and is provided on both sides of the positioning block 571. Furthermore, a sliding shaft 572 is slidably connected within the first slide groove 5451 or the second slide groove 5452, and a second compression spring 573 is disposed between the sliding sleeve 561 and the positioning block 571. The positioning block 571 is provided with a positioning part 5711 for embedding in the waist-shaped hole 551. When the sliding shaft 572 moves to the second slide groove 5452, the positioning block 571 and the sliding shaft 572 disengage from the second slide groove 5452 under the action of the second compression spring 573. The positioning part 5711 is used to embed in the waist-shaped hole 551 so that the extension direction of the connecting rod 55 and the extension direction of the through groove 541 are consistent. At the same time, the positioning part 5711 does not interfere with the adjustment of the adjusting seat 543 within the set range after being embedded in the waist-shaped hole 551. Meanwhile, when the positioning part 5711 is embedded in the waist-shaped hole 551 and moves to the end of the waist-shaped hole 551 under the action of the first compression spring 562, the regular polygonal positioning groove 5611 of the sliding sleeve 561 and the regular polygonal end 5441 of the adjusting screw 544 are spaced apart.

[0033] Implementation effect: When it is necessary to adjust the travel distance of the inner track relative to the outer track of the car seat slide rail, the rotation of the polygonal end 5441 is first unlocked by the limiting structure; then, the adjusting screw 544 is rotated by inserting a tool into the internal hexagonal hole of the polygonal end 5441. During the rotation of the adjusting screw 544, the position of the threaded connection between the adjusting screw 544 and the fixed seat 542 changes, thereby changing the position of the adjusting seat 543 relative to the fixed seat 542, so as to adjust the position of the adjusting seat 543; finally, the rotation of the polygonal end 5441 is restricted by the limiting mechanism 56 to prevent the threaded connection of the adjusting screw 544 from loosening; therefore, it has the function of conveniently adjusting the travel distance of the inner track relative to the outer track.

[0034] The limiting mechanism 56 includes a sliding sleeve 561 and a first compression spring 562. When the sliding sleeve 561 moves toward the fixed seat 542 after overcoming the action of the first compression spring 562, the regular polygonal positioning groove 5611 on the sliding sleeve 561 gradually separates from the regular polygonal end 5441 of the adjusting screw 544, thereby unlocking the rotation of the regular polygonal end 5441. At this time, the adjusting screw 544 can be rotated by inserting a tool into the internal hexagonal hole of the regular polygon. After the adjusting screw 544 is adjusted, the sliding sleeve 561 moves toward the regular polygonal end 5441 under the reset action of the first compression spring 562. When the regular polygonal end 5441 is aligned with the regular polygonal positioning groove 5611, the regular polygonal end 5441 can be embedded in the regular polygonal positioning groove 5611, thereby restricting the rotation of the regular polygonal end 5441.

[0035] The line connecting the center of crank wheel 54, connecting rod 55, and hinge point of sliding plate 3 extends horizontally. Because when the hinge point of crank wheel 54 (specifically, adjusting seat 543) and connecting rod 55 is at the leftmost and rightmost ends of crank wheel 54, the inner slide rail 21 is at the leftmost and rightmost ends of its moving state. In other words, the travel distance of the inner slide rail relative to the outer slide rail depends on the distance from the hinge point of crank wheel 54 (specifically, adjusting seat 543) and connecting rod 55 to the center point of crank wheel 54. The positioning assembly 57 ensures that the extension direction of connecting rod 55 and the extension direction of through groove 541 are consistent. When crank wheel 54 (specifically, adjusting seat 543) and connecting rod 55 are at their leftmost and rightmost ends respectively, the inner slide rail 21 is at its leftmost and rightmost ends of its moving state. When the hinge point of the crank wheel 54 (specifically, the adjusting seat 543) and the connecting rod 55 is on the side of the crank wheel 54 away from the sliding plate 3, the position of the hinge point of the crank wheel 54 (specifically, the adjusting seat 543) and the connecting rod 55 is one limit of the inner slide rail 21 in the moving state; when the hinge point of the crank wheel 54 (specifically, the adjusting seat 543) and the connecting rod 55 is on the side of the crank wheel 54 close to the sliding plate 3, the position of the hinge point of the crank wheel 54 (specifically, the adjusting seat 543) and the connecting rod 55 is another limit of the inner slide rail 21 in the moving state; therefore, it has the function of conveniently adjusting and determining the limit of the moving state of the inner slide rail 21.

[0036] When the hinge point of the crank wheel 54 (specifically, the adjusting seat 543) and the connecting rod 55 is on the side of the crank wheel 54 away from the sliding plate 3, the position of the hinge point of the crank wheel 54 (specifically, the adjusting seat 543) and the connecting rod 55 is at a limit of the inner slide rail 21 in the moving state. By setting the positioning component 57, the extension direction of the connecting rod 55 and the extension direction of the through groove 541 are kept consistent in this state. The specific operation process is as follows: First, overcome the elastic force of the first compression spring 562 so that... The sliding sleeve 561 moves toward the fixed seat 542. The sliding shaft 572 moves along the first slide groove 5451 with the sliding sleeve 561. When the sliding shaft 572 moves to the second slide groove 5452, it moves along the second slide groove 5452 and disengages from the second slide groove 5452 under the elastic force of the second compression spring 573, so that the positioning part 5711 on the positioning block 571 is embedded in the waist-shaped hole 551, so that the extension direction of the connecting rod 55 and the extension direction of the through groove 541 are consistent. When rotating the adjusting screw 544 to drive the adjusting seat 543 to move, the sliding sleeve 561 and the polygonal end 5441 of the adjusting screw 544 need to be separated. At this time, the setting of the waist-shaped hole 551 on the connecting rod 55 can restrict the sliding sleeve 561 from moving away from the fixed seat 542, so as to ensure that the polygonal positioning groove 5611 of the sliding sleeve 561 and the polygonal end 5441 of the adjusting screw 544 are in a spaced-out state. At the same time, during the adjustment process, the polygonal end 5441 of the adjusting screw 544 and the waist-shaped hole 551 of the connecting rod 55 move in the same direction by a consistent distance, so that the sliding sleeve 561 and the polygonal end 5441 of the adjusting screw 544 can always be kept separated, which makes it convenient to rotate the adjusting screw 544.

Claims

1. A break-in machine for a semi-automatic production line of car seat slide rails, comprising a workbench (1), a support and positioning mechanism for fixing the outer track of the car seat slide rail on the workbench (1), a sliding plate (3) horizontally slidably disposed on the workbench (1), a pressing and positioning mechanism for fixing the inner track of the car seat slide rail on the sliding plate (3), and a drive mechanism disposed between the workbench (1) and the sliding plate (3) and driving the sliding plate (3) to reciprocate horizontally to drive the inner track of the car seat slide rail to reciprocate horizontally, wherein the drive mechanism comprises a mounting base (51) disposed on the workbench (1), a rotating shaft (52) rotatably connected to the mounting base (51) and protruding from the mounting base (51) at both ends, a reduction motor (53) disposed on the workbench (1) and driven by a belt at one end of the rotating shaft (52), a crank wheel (54) disposed at the other end of the rotating shaft (52), and a connecting rod (55) hinged at one end to the crank wheel (54) and the other end to the sliding plate (3), characterized in that: The crank wheel (54) has a through groove (541) extending radially on its side away from the mounting base (51). The crank wheel (54) has a fixed base (542) partially embedded in the through groove (541). An adjusting base (543) is slidably disposed in the through groove (541). An adjusting screw (544) is provided between the fixed base (542) and the adjusting base (543), with its middle threaded connection to the fixed base (542) and one end rotatably connected to the adjusting base (543). The end of the adjusting screw (544) away from the adjusting base (543) is a regular polygonal end (5441) with an internal hexagonal hole. A limiting mechanism (56) is provided between the through groove (541) and the regular polygonal end (5441) to restrict or unlock the rotation of the regular polygonal end (5441). The connecting rod (55) is hinged to the adjusting base (543) at one end near the crank wheel (54). The limiting mechanism (56) includes a sliding sleeve (561) slidably connected in the through groove (541) and sleeved on the adjusting screw (544), and a first compression spring (562) sleeved on the adjusting screw (544) and with both ends pressed against the fixed seat (542) and the sliding sleeve (561). The end of the sliding sleeve (561) away from the fixed seat (542) is provided with a regular polygonal positioning groove (5611) that matches the regular polygonal end (5441). When the regular polygonal end (5441) is aligned with the regular polygonal positioning groove (5611), the sliding sleeve (561) moves toward the direction closer to the regular polygonal end (5441) under the action of the first compression spring (562) so that the regular polygonal end (5441) is embedded in the regular polygonal positioning groove (5611). The sliding sleeve (561) is provided with a positioning component (57) that keeps the extension direction of the connecting rod (55) and the extension direction of the through groove (541) consistent. The line connecting the center of the crank wheel (54), the connecting rod (55) and the hinge point of the sliding plate (3) extends in the horizontal direction. The crank wheel (54) is provided with connecting parts (545) on both sides of the through groove (541). The connecting parts (545) are provided with a first sliding groove (5451) extending along the extension direction of the through groove (541). The connecting parts (545) are provided with a second sliding groove (5452) that communicates with the end of the first sliding groove (5451) near the fixed seat (542) and extends along the center line of the crank wheel (54). The connecting rod (55) is provided with a waist-shaped hole (551) extending along its length direction. The positioning assembly (57) includes a positioning block (571) telescopically mounted on the sliding sleeve (561) along the centerline of the crank wheel (54), a sliding shaft (572) mounted on both sides of the positioning block (571) and slidably connected in a first slide groove (5451) or a second slide groove (5452), and a second compression spring (573) mounted between the sliding sleeve (561) and the positioning block (571). The positioning block (571) is provided with a positioning part (5711) for embedding in the waist-shaped hole (551). When the sliding shaft (572) moves to the second slide groove (5452), the positioning block (571) and the sliding shaft (572) are disengaged from the second slide groove (5452) under the action of the second compression spring (573). The positioning part (5711) is used to be embedded in the waist-shaped hole (551) so that the extension direction of the connecting rod (55) and the extension direction of the through groove (541) are consistent. At the same time, the positioning part (5711) does not interfere with the adjustment seat (543) within the set range after being embedded in the waist-shaped hole (551).

2. The break-in machine for a semi-automatic production line of automotive seat slide rails according to claim 1, characterized in that: When the positioning part (5711) is embedded in the waist-shaped hole (551) and moves to the end of the waist-shaped hole (551) under the action of the first compression spring (562), the regular polygonal positioning groove (5611) of the sliding sleeve (561) is spaced apart from the regular polygonal end (5441) of the adjusting screw (544).

3. The break-in machine for a semi-automatic production line of automotive seat slide rails according to claim 1, characterized in that: The support and positioning mechanism includes two slide rails (21) arranged on the worktable (1) and extending along the front-rear direction of the worktable (1), a sliding seat (22) slidably connected between the two slide rails (21), a lower clamp (23) arranged on the sliding seat (22) and fixing the outer track of the car seat slide rail, and a drive cylinder (24) arranged between the worktable (1) and the sliding seat (22). The lower clamp (23) allows the outer track of the car seat slide rail to be embedded and fastened with bolts.

4. The break-in machine for a semi-automatic production line of automotive seat slide rails according to claim 3, characterized in that: The pressing and positioning mechanism includes a connecting seat (41) on the sliding plate (3), a lifting cylinder (42) on the connecting seat (41), and an upper clamp (43) on the lower end of the lifting cylinder (42) for fixing the inner track of the car seat slide rail. The upper clamp (43) allows the inner track of the car seat slide rail to be embedded and fastened with bolts.

5. The break-in machine for a semi-automatic production line of automotive seat slide rails according to claim 4, characterized in that: The workbench (1) is provided with a slide rod (44) located above the sliding plate (3) and extending in the horizontal direction. A slider (45) is provided on the slide rod (44). The cylinder body of the lifting cylinder (42) is fixed to the slider (45).

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