Seat sliding rail assembling mechanism

Abstract

The utility model discloses a seat sliding rail assembling mechanism, which belongs to the technical field of seat processing and comprises a supporting device, and a conveying device used for conveying product middleware and a feeding device used for conveying a left sliding rail and a right sliding rail of a product are mounted on the supporting device. The feeding device is provided with a fixing device used for fixing the product middleware and the product left-right sliding rail, and the conveying device is located on the right side of the feeding device and the fixing device. The conveying device comprises a driving assembly, a moving steering assembly and a clamping and lifting assembly. By means of the mode, the moving steering assembly and the clamping and lifting assembly are arranged in a matched mode, the product middleware moves backwards, meanwhile, the forefront product middleware rotates, when the product middleware enters the second station, installation of the other product sliding rail is facilitated, and the production efficiency is improved; and through the arrangement of the two push plates, a left sliding rail and a right sliding rail of the product can be simultaneously driven by single power to be aligned and fixed with the product middleware, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of seat processing, and particularly relates to a seat slide rail assembly mechanism. Background Art

[0002] An automotive seat slide rail is an important component connecting the automotive seat and the vehicle body, mainly used for adjusting the position and angle of the seat to improve riding comfort and safety. The slide rail is usually made of metal materials and is generally assembled by left and right slide rails and a middle piece. Common seat slide rail assembly methods include manual assembly and using assembly equipment.

[0003] For example, Chinese Patent Application CN113400244A discloses an assembly tool for an automotive seat slide rail and an upper bracket, which includes a frame; at least three upper bracket positioning units arranged at intervals along the length direction of the frame; and at least three slide rail positioning units arranged at intervals along the length direction of the frame. The slide rail positioning units and the upper bracket positioning units are in one-to-one correspondence and cooperation. The slide rail positioning units are divided into fixed slide rail positioning units fixed to the frame and movable slide rail positioning units movable relative to the frame. Each fixed slide rail positioning unit includes a pair of slide rail positioning blocks, and each movable slide rail positioning unit includes two pairs of slide rail positioning blocks arranged at intervals along the length direction of the frame. The two pairs of slide rail positioning blocks can respectively move to cooperate with the upper bracket positioning units, and each pair of slide rail positioning blocks includes two slide rail positioning blocks respectively arranged at both ends in the width direction of the frame.

[0004] However, when using this assembly tool for an automotive seat slide rail and an upper bracket, it is necessary to manually fix the product with a fixing device and then fix the slide rail to a single upper bracket, which has low efficiency and uses a large number of devices such as cylinders and motors, resulting in high costs.

[0005] Based on this, the utility model designs a seat slide rail assembly mechanism to solve the above problems. Summary of the Utility Model

[0006] In view of the above-mentioned drawbacks of the prior art, the utility model provides a seat slide rail assembly mechanism.

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0008] A seat slide rail assembly mechanism includes a support device,

[0009] A transmission device for conveying product middle pieces and a feeding device for conveying product left and right slide rails are installed on the support device. A fixing device for fixing the product middle pieces and the product left and right slide rails is installed on the feeding device. The transmission device is located to the right of the feeding device and the fixing device;

[0010] The transmission device includes a driving component for providing power, a moving and steering component for driving the product intermediate member to move, and a clamping and lifting component for clamping and lifting the product intermediate member. The clamping and lifting component is installed at the upper end of the moving and steering component, the moving and steering component is installed at the upper end of the driving component, and the driving component is installed at the upper right side of the support device.

[0011] Furthermore, the support device includes a bottom plate, a bracket, and a top plate. The bracket is fixedly installed on the left side of the upper end of the bottom plate, the top plate is fixedly installed on the upper end of the bracket, the upper end of the bottom plate is connected to the driving component, and the upper end of the top plate is connected to the feeding device.

[0012] Furthermore, the driving component includes a track plate, two fixing plates, a motor, a sliding rod, a threaded rod, and three groups of support frames. The track plate is fixedly installed on the upper end of the bottom plate. A chute for cooperating with the moving and steering component is provided on the track plate. The front section of the chute is a straight groove, the middle section of the chute is an arc groove offset to the right, and the rear section of the chute is a straight groove. The two fixing plates are respectively fixedly installed at the front and rear ends of the track plate. The motor is fixedly installed at the front end of the front fixing plate, and the output end of the motor is fixedly connected to the threaded rod. The front and rear ends of the threaded rod are respectively rotatably connected to the inner sides of the two fixing plates. The front and rear ends of the sliding rod are respectively fixedly connected to the inner sides of the two fixing plates. The three groups of support frames are distributed above the track plate from front to back.

[0013] Furthermore, each group of support frames consists of two support frames, and the two support frames are respectively fixedly installed on the left and right sides of the track plate. A through groove for placing the product intermediate member is provided at the upper end of the support frame.

[0014] Furthermore, the moving and steering component includes two fixed seats, two sliding blocks, a rotating seat, and a sliding frame. The two fixed seats are respectively fixedly installed at the front ends of the two sliding blocks. The sliding blocks are sleeved on the sliding rod and the threaded rod. The sliding blocks are slidably connected to the sliding rod and threadedly connected to the threaded rod. The rotating seat passes through the front fixed seat and is rotatably connected to the fixed seat. The lower end of the rotating seat is rotatably connected to one end of the sliding frame, and the other end of the sliding frame is slidably connected to the chute of the track plate. The upper ends of the rotating seat and the rear fixed seat are connected to the clamping and lifting component.

[0015] Furthermore, there are two clamping and lifting components, and the two clamping and lifting components are respectively installed at the upper ends of the rotating seat and the rear fixed seat. The clamping and lifting component includes a first cylinder, two limiting rods, a connecting plate, a cylinder bottom plate, and two jaw cylinders. The first cylinders in the two clamping and lifting components are respectively fixedly installed at the upper ends of the rear fixed seat and the rotating seat. The upper end of the first cylinder is fixedly connected to the connecting plate, and the output end of the first cylinder passes through the connecting plate and is fixedly connected to the cylinder bottom plate. The upper ends of the two limiting rods pass through the connecting plate and are fixedly connected to the cylinder bottom plate. The two limiting rods are located in front of and behind the first cylinder and are slidably connected to the connecting plate. Two jaw cylinders are fixedly installed at the upper end of the cylinder bottom plate.

[0016] Furthermore, the feeding device includes a second air cylinder, a sliding plate, two pushing plates and a limiting frame. The second air cylinder is fixedly installed at the upper end of the top plate. The output end of the second air cylinder is fixedly connected to the sliding plate. The right end of the sliding plate is fixedly connected to the two pushing plates through a connecting rod. There are three limiting frames, and the three limiting frames are fixedly installed at the upper end of the top plate. Chutes for the sliding of the sliding plate are provided on the inner sides of the front and rear limiting frames. The outer side of the middle limiting frame is slidably connected to the two pushing plates. The front and rear ends of the sliding plate are slidably connected to the limiting frames in a limited manner. The lower end of the sliding plate is slidably connected to the top plate. The upper ends of the front and rear limiting frames are connected to the fixing device.

[0017] Furthermore, the fixing device includes two fixing frames, a support plate and two automatic screwdrivers. The two fixing frames are respectively fixedly installed at the upper ends of the front and rear limiting frames. The support plate is fixedly installed between the two fixing frames. The two automatic screwdrivers pass through the support plate and are fixedly connected to the support plate. The output ends of the automatic screwdrivers face downward, and the automatic screwdrivers are located to the left of the front two sets of support frames.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. Through the combined setting of the moving and steering component and the clamping and lifting component, while the product intermediate piece moves backward, the frontmost product intermediate piece will rotate, facilitating the installation of another product slide rail when entering the second working station and improving production efficiency;

[0019] 2. Through the setting of the two pushing plates, a single power can drive the left and right slide rails of the product to align and fix with the product intermediate piece simultaneously, reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a three-dimensional view of a seat slide rail assembly mechanism of the present utility model Figure 1 ;

[0022] Figure 2 is a front view of a seat slide rail assembly mechanism of the present utility model;

[0023] Figure 3 is a top view of a seat slide rail assembly mechanism of the present utility model;

[0024] Figure 4 is a three-dimensional view of a seat slide rail assembly mechanism of the present utility model Figure 2 ;

[0025] Figure 5 is a three-dimensional view of a seat slide rail assembly mechanism of the present utility model Figure 2 ;

[0026] Figure 6 is Figure 4 an enlarged view of the position A in

[0027] Figure 7 is a three-dimensional view of the driving component and the moving and steering component of the present utility model

[0028] The reference numerals in the figure respectively represent:

[0029] 1. Support device; 11. Bottom plate; 12. Bracket; 13. Top plate; 2. Transmission device; 21. Driving component; 211. Track plate; 212. Fixed plate; 213. Motor; 214. Slide bar; 215. Threaded rod; 216. Support frame; 22. Moving and steering component; 221. Fixed seat; 222. Sliding block; 223. Rotating seat; 224. Sliding frame; 23. Clamping and lifting component; 231. First cylinder; 232. Limit rod; 233. Connecting plate; 234. Cylinder bottom plate; 235. Jaw cylinder; 3. Feeding device; 31. Second cylinder; 32. Sliding plate; 33. Pushing plate; 34. Limit frame; 4. Fixing device; 41. Fixed frame; 42. Support plate; 43. Automatic screwdriver Specific embodiments

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model

[0031] The "left", "right", "front", "rear", "upper" and "lower" mentioned in the following description are oriented in the perspective direction of the front view

[0032] Embodiment 1: In some embodiments, please refer to the Figures 1-7 in the accompanying drawings of the specification, a seat slide rail assembly mechanism includes a support device 1

[0033] A transmission device 2 for conveying the product intermediate piece and a feeding device 3 for conveying the left and right slide rails of the product are installed on the support device 1. A fixing device 4 for fixing the product intermediate piece and the left and right slide rails of the product is installed on the feeding device 3. The transmission device 2 is located to the right of the feeding device 3 and the fixing device 4

[0034] The transfer device 2 includes a driving component 21 for providing power, a moving and steering component 22 for driving the movement of the product intermediate piece, and a clamping and lifting component 23 for clamping and lifting the product intermediate piece. The clamping and lifting component 23 is installed at the upper end of the moving and steering component 22, the moving and steering component 22 is installed at the upper end of the driving component 21, and the driving component 21 is installed at the upper right side of the support device 1.

[0035] When the seat slide rail assembly mechanism is in normal use, place the product intermediate piece on the driving component 21, place the left and right product slide rails on the specified positions of the support device 1 respectively, start the feeding device 3 to push the left and right product slide rails towards the product intermediate piece, start the fixing device 4 to fix the left and right product slide rails to the product intermediate piece, start the clamping and lifting component 23, the clamping and lifting component 23 clamps and lifts the product intermediate piece upwards, start the driving component 21, the driving component 21 drives the moving and steering component 22 to move backward by one station, drives the product intermediate piece to move and rotate. Through the cooperative setting of the moving and steering component 22 and the clamping and lifting component 23, while the product intermediate piece moves backward, the frontmost product intermediate piece will rotate, making it convenient for the installation of another product slide rail when entering the second station, thus improving the production efficiency.

[0036] The support device 1 includes a bottom plate 11, a bracket 12, and a top plate 13. The bracket 12 is fixedly installed on the upper left side of the bottom plate 11, the top plate 13 is fixedly installed on the upper end of the bracket 12, the upper end of the bottom plate 11 is connected to the driving component 21, and the upper end of the top plate 13 is connected to the feeding device 3.

[0037] The driving component 21 includes a track plate 211, two fixing plates 212, a motor 213, a sliding rod 214, a threaded rod 215, and three groups of support frames 216. The track plate 211 is fixedly installed on the upper end of the bottom plate 11. A chute for cooperating with the moving and steering component 22 is provided on the track plate 211. The front section of the chute is a straight groove, the middle section of the chute is an arc groove offset to the right, and the rear section of the chute is a straight groove. The two fixing plates 212 are respectively fixedly installed at the front and rear ends of the track plate 211. The motor 213 is fixedly installed at the front end of the front fixing plate 212. The output end of the motor 213 is fixedly connected to the threaded rod 215. The front and rear ends of the threaded rod 215 are respectively rotatably connected to the inner sides of the two fixing plates 212. The front and rear ends of the sliding rod 214 are respectively fixedly connected to the inner sides of the two fixing plates 212. The three groups of support frames 216 are distributed above the track plate 211 from front to back.

[0038] Each group of support frames 216 is composed of two support frames 216. The two support frames 216 are respectively fixedly installed on the left and right sides of the track plate 211. A through groove for placing the product intermediate piece is provided at the upper end of the support frame 216.

[0039] The mobile steering assembly 22 includes two fixed seats 221, two sliding blocks 222, a rotating seat 223 and a sliding frame 224. The two fixed seats 221 are respectively fixedly installed at the front ends of the two sliding blocks 222. The sliding blocks 222 are sleeved on the slide rod 214 and the threaded rod 215. The sliding blocks 222 are slidably connected to the slide rod 214 and are threadedly connected to the threaded rod 215. The rotating seat 223 passes through the front fixed seat 221 and is rotatably connected to the fixed seat 221. The lower end of the rotating seat 223 is rotatably connected to one end of the sliding frame 224. The other end of the sliding frame 224 is slidably connected to the chute of the track plate 211. The rotating seat 223 and the upper ends of the rear fixed seat 221 are connected to the clamping and lifting assembly 23.

[0040] There are two clamping and lifting assemblies 23. The two clamping and lifting assemblies 23 are respectively installed at the upper ends of the rotating seat 223 and the rear fixed seat 221. The clamping and lifting assembly 23 includes a first cylinder 231, two limiting rods 232, a connecting plate 233, a cylinder bottom plate 234 and two jaw cylinders 235. The first cylinders 231 in the two clamping and lifting assemblies 23 are respectively fixedly installed at the upper ends of the rear fixed seat 221 and the rotating seat 223. The upper end of the first cylinder 231 is fixedly connected to the connecting plate 233. The output end of the first cylinder 231 passes through the connecting plate 233 and is fixedly connected to the cylinder bottom plate 234. The upper ends of the two limiting rods 232 pass through the connecting plate 233 and are fixedly connected to the cylinder bottom plate 234. The two limiting rods 232 are located in front of and behind the first cylinder 231. The limiting rods 232 are slidably connected to the connecting plate 233. Two jaw cylinders 235 are fixedly installed at the upper end of the cylinder bottom plate 234.

[0041] When the seat rail assembly mechanism is in normal use, place the product middle piece on the upper end of the front support frame 216, place the left rail of the product on the front side of the upper end of the top plate 13, and place the right rail of the product on the rear side of the upper end of the top plate 13. Start the feeding device 3 to push the left and right rails of the product to the right, so that the positioning holes of the left and right rails of the product correspond to those of the product middle piece. Start the fixing device 4 to bolt-fix the left and right rails of the product to the product middle piece. Start the first cylinder 231 and the jaw cylinder 235. The first cylinder 231 drives the cylinder base plate 234 to move upward. The limit rod 232 restricts the moving direction of the cylinder base plate 234. The cylinder base plate 234 drives the jaw cylinder 235 to move. While the jaw cylinder 235 moves upward, the jaws clamp the product middle piece. The jaw cylinder 235 drives the product middle piece to disengage from the through groove of the support frame 216. Start the motor 213. The motor 213 drives the threaded rod 215 to rotate. The threaded rod 215 drives the sliding block 222 to move backward. The sliding block 222 drives the fixed seat 221 to move backward. The front fixed seat 221 drives the rotating seat 223 to move. The rotating seat 223 drives the sliding frame 224 to slide along the chute of the track plate 211. The sliding frame 224 drives the rotating seat 223 to rotate. The rotating seat 223 drives the first cylinder 231 to rotate, so that the front product middle piece rotates while moving backward, turning the right end of the product middle piece to the left, which is convenient for fixing the right rail of the product at the second station. When moving above the support frame 216 of the next station, the first cylinder 231 and the jaw cylinder 235 stop operating. The motor 213 starts to drive the first cylinder 231 and the jaw cylinder 235 to return to their original positions. Repeat the above steps to make the product middle piece rotate and move to the second station after being fixed to the left rail of the product at the first station, be fixed to the right rail of the product at the second station, and then move to the third station for transportation, realizing the automatic installation of the product middle piece and the left and right rails of the product, with high installation efficiency.

[0042] The feeding device 3 includes a second cylinder 31, a sliding plate 32, two push plates 33 and a limit frame 34. The second cylinder 31 is fixedly installed on the upper end of the top plate 13. The output end of the second cylinder 31 is fixedly connected to the sliding plate 32. The right end of the sliding plate 32 is fixedly connected to the two push plates 33 through a connecting rod. There are three limit frames 34. The three limit frames 34 are fixedly installed on the upper end of the top plate 13. Chutes for sliding the sliding plate 32 are provided on the inner sides of the front and rear limit frames 34. The outer side of the middle limit frame 34 is slidably connected to the two push plates 33. The front and rear ends of the sliding plate 32 are slidably connected to the limit frame 34 in a limited manner. The lower end of the sliding plate 32 is slidably connected to the top plate 13. The upper ends of the front and rear limit frames 34 are connected to the fixing device 4.

[0043] The fixing device 4 includes two fixing brackets 41, a support plate 42 and two automatic screwdrivers 43. The two fixing brackets 41 are respectively fixedly installed at the upper ends of the front and rear limit brackets 34. The support plate 42 is fixedly installed between the two fixing brackets 41. The two automatic screwdrivers 43 pass through the support plate 42 and are fixedly connected to the support plate 42. The output ends of the automatic screwdrivers 43 face downward, and the automatic screwdrivers 43 are located on the left of the front two groups of support frames 216.

[0044] When the seat rail assembly mechanism is in normal use, the second cylinder 31 is started. The second cylinder 31 drives the sliding plate 32 to move rightward along the limit bracket 34. The sliding plate 32 drives the push plate 33 to move. The two sliding plates 32 respectively drive the left and right rails of the product to move rightward until they contact the intermediate part of the product. The automatic screwdriver 43 is started. The automatic screwdriver 43 fixes the intermediate part of the product and the left and right rails of the product with screws. Through the arrangement of the two push plates 33, a single power can drive the left and right rails of the product to align and fix with the intermediate part of the product simultaneously, reducing the production cost.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A seat slide assembly mechanism, comprising a support device (1), characterized in that: A conveying device (2) for conveying product middle pieces and a feeding device (3) for conveying left and right slide rails of the product are installed on the supporting device (1). A fixing device (4) for fixing the product middle pieces and the left and right slide rails of the product is installed on the feeding device (3). The conveying device (2) is located to the right of the feeding device (3) and the fixing device (4). The conveying device (2) includes a driving assembly (21) for providing power, a moving and steering assembly (22) for driving the product middle pieces to move, and a clamping and lifting assembly (23) for clamping and lifting the product middle pieces. The clamping and lifting assembly (23) is installed at the upper end of the moving and steering assembly (22), the moving and steering assembly (22) is installed at the upper end of the driving assembly (21), and the driving assembly (21) is installed at the upper right side of the supporting device (1).

2. The seat slide rail assembly mechanism according to claim 1, wherein The supporting device (1) includes a bottom plate (11), a bracket (12), and a top plate (13). The bracket (12) is fixedly installed on the upper left side of the bottom plate (11), the top plate (13) is fixedly installed at the upper end of the bracket (12), the upper end of the bottom plate (11) is connected to the driving assembly (21), and the upper end of the top plate (13) is connected to the feeding device (3).

3. The seat slide rail assembly mechanism according to claim 2, characterized in that, The driving assembly (21) includes an orbital plate (211), two fixing plates (212), a motor (213), a slide bar (214), a threaded rod (215), and three groups of support frames (216). The orbital plate (211) is fixedly installed on the upper end of the bottom plate (11). A chute for cooperating with the moving and steering assembly (22) is formed on the orbital plate (211). The front section of the chute is a straight groove, the middle section of the chute is an arc groove offset to the right, and the rear section of the chute is a straight groove. The two fixing plates (212) are respectively fixedly installed at the front and rear ends of the orbital plate (211). The motor (213) is fixedly installed at the front end of the front fixing plate (212). The output end of the motor (213) is fixedly connected to the threaded rod (215). The front and rear ends of the threaded rod (215) are respectively rotatably connected to the inner sides of the two fixing plates (212). The front and rear ends of the slide bar (214) are respectively fixedly connected to the inner sides of the two fixing plates (212). The three groups of support frames (216) are distributed above the orbital plate (211) from front to back.

4. The seat slide rail assembly mechanism according to claim 3, characterized in that Each group of support frames (216) is composed of two support frames (216). The two support frames (216) are respectively fixedly installed on the left and right sides of the orbital plate (211). A through groove for placing the product middle pieces is formed at the upper end of the support frame (216).

5. The seat slide rail assembly mechanism according to claim 4, characterized in that, The mobile steering component (22) includes two fixed seats (221), two sliding blocks (222), a rotating seat (223) and a sliding frame (224). The two fixed seats (221) are respectively fixedly installed at the front ends of the two sliding blocks (222). The sliding blocks (222) are sleeved on the sliding rod (214) and the threaded rod (215). The sliding blocks (222) are slidably connected to the sliding rod (214), and the sliding blocks (222) are threadedly connected to the threaded rod (215). The rotating seat (223) passes through the front fixed seat (221) and is rotatably connected to the fixed seat (221). The lower end of the rotating seat (223) is rotatably connected to one end of the sliding frame (224). The other end of the sliding frame (224) is slidably connected to the chute of the track plate (211). The rotating seat (223) and the upper end of the rear fixed seat (221) are connected to the clamping and lifting component (23).

6. The seat slide rail assembly mechanism according to claim 5, wherein There are two clamping and lifting components (23). The two clamping and lifting components (23) are respectively installed at the upper ends of the rotating seat (223) and the rear fixed seat (221). The clamping and lifting component (23) includes a first cylinder (231), two limiting rods (232), a connecting plate (233), a cylinder bottom plate (234) and two jaw cylinders (235). The first cylinders (231) in the two clamping and lifting components (23) are respectively fixedly installed at the upper ends of the rear fixed seat (221) and the rotating seat (223). The upper end of the first cylinder (231) is fixedly connected to the connecting plate (233). The output end of the first cylinder (231) passes through the connecting plate (233) and is fixedly connected to the cylinder bottom plate (234). The upper ends of the two limiting rods (232) pass through the connecting plate (233) and are fixedly connected to the cylinder bottom plate (234). The two limiting rods (232) are located in front of and behind the first cylinder (231). The limiting rods (232) are slidably connected to the connecting plate (233). Two jaw cylinders (235) are fixedly installed at the upper end of the cylinder bottom plate (234).

7. The seat slide rail assembly mechanism according to claim 6, characterized in that, The feeding device (3) includes a second cylinder (31), a sliding plate (32), two pushing plates (33) and a limiting frame (34). The second cylinder (31) is fixedly installed at the upper end of the top plate (13). The output end of the second cylinder (31) is fixedly connected to the sliding plate (32). The right end of the sliding plate (32) is fixedly connected to the two pushing plates (33) through a connecting rod. There are three limiting frames (34). The three limiting frames (34) are fixedly installed at the upper end of the top plate (13). Chutes for sliding the sliding plate (32) are provided on the inner sides of the front and rear limiting frames (34). The outer side of the middle limiting frame (34) is slidably connected to the two pushing plates (33). The front and rear ends of the sliding plate (32) are slidably connected to the limiting frame (34) with limited movement. The lower end of the sliding plate (32) is slidably connected to the top plate (13). The upper ends of the front and rear limiting frames (34) are connected to the fixing device (4).

8. The seat slide rail assembly mechanism according to claim 7, wherein The fixing device (4) includes two fixing brackets (41), a support plate (42) and two automatic screwdrivers (43). The two fixing brackets (41) are respectively fixedly installed at the upper ends of the front and rear limit brackets (34). The support plate (42) is fixedly installed between the two fixing brackets (41). The two automatic screwdrivers (43) pass through the support plate (42) and are fixedly connected to the support plate (42). The output ends of the automatic screwdrivers (43) face downward, and the automatic screwdrivers (43) are located to the left of the front two groups of support frames (216).

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