Automatic off-line tool for automobile seat and machining method of automatic off-line tool

Abstract

The invention belongs to the field of automatic offline of automobile seats, and particularly relates to an automatic offline tool for automobile seats and a machining method thereof.The tool comprises an offline robot and a dispatching line tool, the dispatching line tool comprises a dispatching line and a dispatching line conveying plate, and tool plate stacking fixing pins are arranged at the four corners of the dispatching line conveying plate; a plurality of seat front fixing blocks are arranged on one side of the dispatching line conveying plate, and a plurality of seat rear fixing blocks are arranged on the other side of the dispatching line conveying plate. The tool can automatically transfer finished seats on the back row to a delivery line, the delivery line automatically flows to a connection position, and the automatic off-line and automatic delivery functions are achieved. The specific machining method comprises the steps that after the seats reach stations, the seats are firstly photographed, it is determined that the seats are located in a designated area, then the off-line robot automatically clamps the four faces of the seats according to a program, and the seats are conveyed to the delivery line; and the seat is moved to the shipping line tool and is transferred to the connection position along with the shipping line.

Description

Technical Field

[0001] The invention belongs to the field of automatic off-line production of automobile seats, and in particular relates to an automatic off-line tooling for automobile seats and a processing method thereof. Background Art

[0002] At present, some of the rear seat off-line workstations of automobiles are also replaced by robots, but the existing robots are not sufficiently automated and still need to cooperate with manual operation to complete the off-line of the seats, which affects production safety and efficiency. In addition, the existing clamping methods either damage the seat surface when clamping the seat, or fail to clamp the seat tightly, causing the seat to slip. Summary of the invention

[0003] In order to solve the above-mentioned problems existing in the prior art, the present invention provides an automatic off-line tooling for automobile seats and a processing method thereof, which can automatically transfer the rear-row finished seats to the shipping line, and the shipping line automatically flows to the docking point, thereby realizing automatic off-line and automatic shipping functions.

[0004] To achieve the above-mentioned purpose, the present invention provides, on the one hand, an automatic off-line tooling for automobile seats, including an off-line robot and a shipping line tooling, the shipping line tooling including a shipping line and a shipping line conveyor plate, tooling plate stacking fixing pins are arranged on the four corners of the shipping line conveyor plate, a plurality of seat front fixing blocks are arranged on one side of the shipping line conveyor plate, and a plurality of seat rear fixing blocks are arranged on the other side.

[0005] Furthermore, a rear-row whole-chair fixture is arranged at the top of the offline robot, and the rear-row whole-chair fixture includes a photo detection mechanism, a fixture mounting part, a backrest fixing mechanism, a backrest front fixing mechanism, a seat cushion lower fixing mechanism and a seat cushion upper fixing mechanism. The top of the offline robot is connected to the middle of the top of the fixture mounting part, the photo detection mechanism is fixed to the lower rear part of the fixture mounting part, the backrest fixing mechanism is fixed to the front of the upper part of the fixture mounting part, the backrest front fixing mechanism is fixed to the front of the lower middle part of the fixture mounting part, the seat cushion lower fixing mechanism is fixed to the rear part of the bottom of the fixture mounting part, and the seat cushion upper fixing mechanism is fixed to the middle of the middle part of the fixture mounting part.

[0006] Furthermore, the backrest fixing mechanism includes two cylinders, four flanges, shafts, gears, bevel gears, a rear backrest fixing part and a micro cylinder, one end of the two cylinders is fixed to the two sides of the clamp mounting part, the other ends of the two cylinders are fixed to one end of the flange, the two flanges are fixed to the two sides of the other end of the cylinder, the clamp mounting part is provided with obliquely upward convex arms on both sides, the shaft penetrates between the two convex arms, the other end of the flange is sleeved on the shaft, the gear is fixedly sleeved on the middle part of the shaft, the two ends of the shaft are fixed to the two ends of the rear backrest fixing part, the middle part of the rear backrest fixing part is penetrated and fixed by the shaft, the rear backrest fixing part is claw-shaped and adapted to the length of the seat, the front side of the clamp mounting part is fixed with an upward micro cylinder, one end of the bevel gear is fixed to the top of the micro cylinder, and the other end of the bevel gear is overlapped on the gear surface.

[0007] Furthermore, the fixing mechanism on the seat cushion includes two seat cushion retraction cylinders, two connecting blocks, four buffer adjusters, four rotating blocks and two seat cushion pressing blocks. The two seat cushion retraction cylinders are fixed on both sides of the middle part of the clamp mounting member, the connecting blocks are fixed on the bottom surface of the seat cushion retraction cylinders, the connecting blocks on both sides are rotatably connected to the rotating blocks, the two buffer adjusters are fixed front and back in a connecting block, and the top of the seat cushion pressing block is vertically connected to the bottom surface of the rotating block.

[0008] Furthermore, a thread is arranged on the upper part of the buffer adjuster, a spring is arranged in the bottom part, and the bottom surface is in contact with the seat cushion pressing block.

[0009] Furthermore, the front fixing mechanism of the backrest includes two backrest retraction cylinders, six backrest pressure blocks, four bearing seats, two concentric shafts, two tripods and two tension springs. The two backrest retraction cylinders are respectively horizontally fixed on both sides of the front middle part of the clamp mounting part, a backrest pressure block is fixed at the front end of the backrest retraction cylinder, two bearing seats are fixed on the left and right sides of the lower part of the clamp mounting part, two ends of the concentric shaft are respectively movably connected to the bearing seats, one end of the tripod is located in the middle of the concentric shaft and rotates around the concentric shaft, the other two ends of the tripod are in the same vertical plane and two backrest pressure blocks are fixed, one end of the tension spring is fixed on the front middle part of the clamp mounting part, and the other end is fixed on the tripod.

[0010] Furthermore, a hook is fixed to the rear part of the bottom surface of the clamp mounting piece, and a plurality of circular grooves matching with the circular tube at the bottom of the seat are arranged at the curved part in front of the hook.

[0011] Furthermore, the surfaces of the backrest pressing block and the seat cushion pressing block that contact the seat surface are rounded and made of PU material, and the circular groove is also made of PU material.

[0012] In another aspect, the present invention provides a method for automatically disassembling a car seat, which is implemented by using any of the above-mentioned automatic disassembly tooling for car seats. The processing method comprises the following steps: S1: When the seat positioning tooling and the seat on it arrive at the offline workstation along the assembly line, a signal of arrival is sent to the offline robot; S2: The offline robot controls the photo detection mechanism to take a photo of the seat to confirm whether the seat status and position are in the designated area. If it is determined to be "OK", the offline robot picks up the seat according to the following steps; if it is determined to be "NG", the offline robot alarms and stops the action. Manual intervention is required to place the seat in the designated area and press the start button; S3: The offline robot controls the rear seat fixture to the seat position, moves the fixture mounting part downward, places the seat cushion fixing mechanism under the round tube under the seat, and then moves the fixture mounting part forward to align the seat cushion fixing mechanism with the round tube on the seat. Then, the cylinder in the rear backrest fixing mechanism is pushed out to clamp the seat back. Then, the seat cushion retraction cylinder and the backrest retraction cylinder are pushed out to press the seat cushion and seat back surfaces. Then, the rear seat fixture is moved upward. At this time, the round groove on the seat cushion fixing mechanism fixes the round tube under the seat. At this time, all four sides of the seat are fixed. S4: The offline robot grabs the seat and places it on the delivery line conveyor plate on the delivery line, and the automatic transfer is completed.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can automatically run the finished rear-row seats to the shipping line, and the shipping line automatically flows to the docking point, which plays the role of automatic offline and automatic shipping. Under normal operation, no manual operation is required, and the degree of automation is high, which improves industrial safety and work efficiency; the present invention positions the seats on all four sides, and the seats are positioned up and down, front and back with balanced force, firmly fixed, and can also adapt to different models of rear-row seats without replacing the rear-row chair fixtures; the surfaces of the backrest pressure block and the seat cushion pressure block in the present invention that contact the seat surface are rounded and made of PU material, and the round groove material is also made of PU material, which will not scratch the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 The rear seat fixture structure of the present invention is shown in FIG. Figure 1 ; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 The rear seat fixture structure of the present invention is shown in FIG. Figure 2 ; Figure 5 This is a schematic diagram of the structure of the fixing mechanism behind the backrest of the present invention; Figure 6 This is a schematic diagram of the structure of the fixing mechanism on the seat cushion of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle; Figure 8 This is a schematic diagram of the front fixing mechanism of the backrest of the present invention; Fig. 9 This is a schematic diagram of the structure of the delivery line conveyor plate of the present invention; Fig.10 It is the work flow chart of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1 , 9 On the one hand, the present invention provides an automatic offline tooling for automobile seats, including an offline robot 1 and a shipping line tooling 2, the shipping line tooling 2 includes a shipping line 21 and a shipping line conveyor plate 22, tooling plate stacking fixing pins 221 are arranged on the four corners of the shipping line conveyor plate 22, a plurality of seat front fixing blocks 222 are arranged on one side of the shipping line conveyor plate 22, and a plurality of seat rear fixing blocks 223 are arranged on the other side.

[0017] In this embodiment, when the rear seats arrive at the offline station along the assembly line, the offline robot 1 automatically clamps the rear seats and moves them to the dispatch line conveyor plate 22 on the dispatch line 21, and then flows to the docking point along the dispatch line 21, realizing the automatic offline and automatic dispatching functions. Under normal working conditions, no manual operation is required, and the degree of automation is high, which improves industrial safety and work efficiency. When the dispatch line conveyor plate 22 is not needed, the dispatch line conveyor plates 22 are stacked one by one through the tooling plate stacking fixing pins 221, so as not to damage the seat front fixing block 222 and the seat rear fixing block 223 thereon, and can also save stacking space. When the dispatch line conveyor plate 22 is used, the bottom of the front and rear ends of the rear seats are placed on the seat front fixing block 222 and the seat rear fixing block 223, so as to facilitate circulation on the dispatch line 21. There are generally four seat front fixing blocks 222 and four seat rear fixing blocks 223, with two seat front fixing blocks 222 accommodating 40% of the rear seat portion, and the other two seat front fixing blocks 222 accommodating 60% of the rear seat portion; the same is true for the seat rear fixing blocks 223.

[0018] For details, please refer to Figure 2-4A rear-row seat fixture is arranged at the top of the arm of the offline robot 1. The rear-row seat fixture includes a photo detection mechanism 3, a fixture mounting part 4, a backrest fixing mechanism 5, a backrest front fixing mechanism 6, a seat cushion lower fixing mechanism 7 and a seat cushion upper fixing mechanism 8. The top of the offline robot 1 is connected to the middle of the top of the fixture mounting part 4. The photo detection mechanism 3 is fixed to the lower rear part of the fixture mounting part 4, the backrest fixing mechanism 5 is fixed to the front of the top of the fixture mounting part 4, the backrest front fixing mechanism 6 is fixed to the front of the lower middle part of the fixture mounting part 4, and the seat cushion lower fixing mechanism 7 is fixed to the fixture mounting part 4. At the rear part below, the fixing mechanism 8 on the seat cushion is fixed in the middle of the middle part of the clamp mounting part 4, wherein the photo detection mechanism 3 will automatically take photos for detection to detect whether the seat is in the specified position and whether it is in the specified state; the fixing mechanism 5 behind the backrest will be pressed against the back of the backrest, the fixing mechanism 6 in front of the backrest will be pressed against the left and right sides of the backrest, the fixing mechanism 7 under the seat cushion will be in contact with the round tube under the seat, and the fixing mechanism 8 on the seat cushion will be pressed against the left and right sides of the seat cushion. In this way, the seat is positioned on all four sides, and the seat is positioned up and down, front and back with balanced force, firmly fixed, and can also adapt to seats of different models.

[0019] For details, please refer to Figure 4-5 The backrest fixing mechanism 5 includes two cylinders 51, four flanges 52, a shaft 53, a gear 54, a bevel gear 55, a backrest fixing part 56 and a micro cylinder 57. One end of the two cylinders 51 is fixed to both sides of the fixture mounting part 4, and the other end of the two cylinders 51 is fixed to one end of the flange 52. Both cylinders 51 are obliquely upward in the direction of the rear seat. The two flanges 52 are fixed to both sides of the other end of the cylinder 51. The two cylinders 51 are equipped with four flanges 52. The fixture mounting part 4 is provided with obliquely upward convex arms 41 on both sides, and the two convex arms 41 are penetrated by the shaft 53. The other end of the flange 52 is sleeved on the shaft 53, and the gear 54 is fixedly sleeved on the middle part of the shaft 53. The gear 54 will not rotate around the shaft 53. The two ends of the shaft 53 are fixed in the two ends of the rear backrest fixing part 56. The middle part of the rear backrest fixing part 56 is passed through and fixed by the shaft 53. The rear backrest fixing part 56 is claw-shaped and adapted to the length of the seat. The rear backrest fixing part 56 can be adapted to different types of rear seats. The front side of the clamp mounting part 4 is fixed with a micro cylinder 57 facing upward, and the top of the micro cylinder 57 is fixed with one end of a bevel tooth 55, and the other end of the bevel tooth 55 is overlapped on the surface of the gear 54.

[0020] In this embodiment, when the backrest fixing mechanism 5 is pressed against the back of the backrest, it is pushed out simultaneously by the cylinders 51 on the left and right sides. The cylinders 51 drive the flanges 52 on both sides to rotate upward synchronously, and at this time drive the shaft 53 and the rear backrest fixing part 56 fixed to the shaft 53 to rotate counterclockwise, and the shaft 53 also drives the gear 54 to rotate counterclockwise. When the cylinder 51 reaches the stroke, the rear backrest fixing part 56 also presses against the back of the backrest, and at the same time the bevel gear 55 bites and locks with the gear 54; when the micro cylinder 57 extends upward, it drives the bevel gear 55 to move up and away from the gear 54, and it is unlocked. As the cylinder 51 contracts, the rear backrest fixing part 56 can be retracted.

[0021] For details, please refer to Figure 4 , 6 -7, the seat cushion fixing mechanism 8 includes two seat cushion retracting cylinders 81, two connecting blocks 82, four buffering regulators 83, four rotating blocks 84 and two seat cushion pressing blocks 85. The two seat cushion retracting cylinders 81 are fixed on both sides of the middle part of the clamp mounting member 4, the bottom surface of the seat cushion retracting cylinder 81 is fixed with the connecting block 82, the two sides of the connecting block 82 are rotatably connected with the rotating block 84, the two buffering regulators 83 are fixed in one connecting block 82 front and back, the left and right connecting blocks 82 are equipped with four buffering regulators 83, the top of the seat cushion pressing block 85 is vertically connected with the bottom surface of the rotating block 84, and the seat cushion pressing block 85 is driven to rotate when the rotating block 84 rotates.

[0022] Specifically, the buffer adjuster 83 is provided with a thread on the upper part and a spring in the bottom, and the bottom surface is in contact with the seat cushion pressure block 85. Since the seat surface is not horizontal, when the seat cushion pressure block 85 touches the seat surface, it will rotate and adjust according to the angle of the seat surface. When the seat cushion pressure block 85 rotates, the thread on the buffer adjuster 83 is slightly compressed, and the seat cushion pressure block 85 drives the rotating block 84 to rotate together. In addition, a spring is provided at the bottom of the buffer adjuster 83 to act as a buffer during the downward pressure of the seat cushion pressure block 85.

[0023] In this embodiment, when the fixing mechanism 8 on the seat cushion is pressed against the left and right sides of the seat cushion, the left and right seat cushion contraction cylinders 81 are pushed out simultaneously to press the left and right seat cushion pressing blocks 85 toward the seat cushion surface. Since the seat cushion surface is inclined, the two seat cushion pressing blocks 85 are inclined to adapt to the seat cushion surface. At this time, the two buffer adjusters 83 on the seat cushion pressing blocks 85 control the rotation angle of the seat cushion pressing blocks 85, and in the process of pressing down, the spring at the bottom of the buffer adjuster 83 acts as a buffer. Finally, the left and right seat cushion pressing blocks 85 press the seat cushion surface.

[0024] For details, please refer to Figure 4 , 8The backrest front fixing mechanism 6 includes two backrest retraction cylinders 61, six backrest pressure blocks 62, four bearing seats 63, two concentric shafts 64, two tripods 65 and two tension springs 66. The two backrest retraction cylinders 61 are horizontally fixed to the front sides of the middle part of the clamp mounting member 4, a backrest pressure block 62 is fixed to the front end of the backrest retraction cylinder 61, two bearing seats 63 are fixed on the left and right sides of the lower part of the clamp mounting member 4, and the two ends of a concentric shaft 64 are movably connected to the two bearing seats 63 on one side, and the tripod 65 is fixed to the front end of the backrest retraction cylinder 61. The end is located in the middle of the concentric axis 64 and rotates around the concentric axis 64. The other two ends of the tripod 65 are in the same vertical plane and fixed with two backrest pressure blocks 62. The rotation of the tripod 65 can drive the two backrest pressure blocks 62 thereon to rotate synchronously. One end of the tension spring 66 is fixed to the front of the middle part of the clamp mounting member 4 and the other end is fixed to the tripod 65. A tension spring 66 is fixed between the tripod 65 and the clamp mounting member 4 on both sides. The tension spring 66 can pull the tripod 65 and the backrest pressure blocks 62 thereon to prevent sagging.

[0025] In this embodiment, when the front fixing mechanism 6 of the backrest is pressed against the left and right sides of the backrest, the two backrest pressing blocks 62 are pushed out by the two backrest contraction cylinders 61 on the left and right sides, and the two backrest pressing blocks 62 are close to the upper front position of the backrest. At this time, the backrest pressing blocks 62 below the tripod 65 first press against the front of the backrest, and then the tripod 65 rotates around the concentric axis 64, driving the backrest pressing blocks 62 above the tripod 65 to press against the front of the backrest, so that the two backrest pressing blocks 62 are close to the middle and lower part of the backrest.

[0026] For details, please refer to Figure 4 A hook 71 is fixed to the rear part of the bottom surface of the clamp mounting part 4, and a plurality of circular grooves 72 matching the circular tube at the bottom of the seat are arranged at the front bending part of the hook 71. The under-seat fixing mechanism 7 achieves the positioning effect by placing the circular tube under the seat in the circular groove 72 on the hook 71, and then cooperates with the upper fixing mechanism 8 of the seat cushion to press the left and right sides of the seat cushion to realize the upper and lower side fixing of the seat.

[0027] Specifically, the surfaces of the backrest pressure block 62 and the seat cushion pressure block 85 that contact the seat surface are rounded and made of PU material, and the circular groove 72 is also made of PU material to prevent the backrest pressure block 62 and the seat cushion pressure block 85 from scratching the seat and to prevent the circular groove 72 from scratching the circular tube under the seat.

[0028] See also Fig.10 In another aspect, the present invention provides a method for automatically disassembling a car seat, which is implemented by using any of the above-mentioned automatic disassembly tooling for car seats. The processing method comprises the following steps: S1: When the seat positioning tool and the seat on it arrive at the offline station along the assembly line, a signal of arrival is sent to the offline robot 1; S2: The offline robot 1 controls the photo detection mechanism 3 to take a photo of the seat to confirm whether the seat status and position are in the designated area. If it is determined to be "OK", the offline robot 1 picks up the seat according to the following steps; if it is determined to be "NG", the offline robot 1 alarms and stops the action, and manual intervention is required to place the seat in the designated area and press the start button; S3: The offline robot 1 controls the rear-row seat fixture to the seat position, moves the fixture mounting part 4 downward, and makes the seat cushion fixing mechanism 7 under the round tube under the seat, and then moves the fixture mounting part 4 forward to make the seat cushion fixing mechanism 7 align with the round tube on the seat, and then pushes out the cylinder 51 in the rear back fixing mechanism 5 to make the rear backrest fixing part 56 clamp the seat back, and then pushes out the seat cushion retraction cylinder 81 and the backrest retraction cylinder 61 to press the seat cushion and the seat back surface, and then moves the rear-row seat fixture upward, and at this time, the round groove 72 on the seat cushion fixing mechanism 7 fixes the round tube under the seat, and at this time, the four sides of the seat are fixed; S4: The offline robot 1 grabs the seat and places it on the shipping line conveyor plate 22 on the shipping line 21, and the automatic transfer is completed.

[0029] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic off-line tooling for automobile seats, comprising an off-line robot (1) and a shipping line tooling (2), characterized in that: The dispatch line tooling (2) comprises a dispatch line (21) and a dispatch line conveyor plate (22); tooling plate stacking fixing pins (221) are arranged at four corners of the dispatch line conveyor plate (22); a plurality of seat front fixing blocks (222) are arranged on one side of the dispatch line conveyor plate (22); and a plurality of seat rear fixing blocks (223) are arranged on the other side.

2. The automatic off-line tooling for automobile seats according to claim 1, characterized in that: A rear-row whole-chair fixture is arranged at the top of the offline robot (1), and the rear-row whole-chair fixture comprises a photographing detection mechanism (3), a fixture mounting part (4), a backrest fixing mechanism (5), a backrest front fixing mechanism (6), a seat cushion lower fixing mechanism (7), and a seat cushion upper fixing mechanism (8). The top of the offline robot (1) is connected to the middle of the top of the fixture mounting part (4), the photographing detection mechanism (3) is fixed to the lower rear part of the fixture mounting part (4), the backrest fixing mechanism (5) is fixed to the front of the top of the fixture mounting part (4), the backrest front fixing mechanism (6) is fixed to the front of the lower middle part of the fixture mounting part (4), the seat cushion lower fixing mechanism (7) is fixed to the rear of the bottom of the fixture mounting part (4), and the seat cushion upper fixing mechanism (8) is fixed to the middle of the middle part of the fixture mounting part (4).

3. The automatic off-line tooling for automobile seats according to claim 2, characterized in that: The backrest fixing mechanism (5) comprises two cylinders (51), four flanges (52), a shaft (53), a gear (54), a bevel gear (55), a backrest fixing member (56) and a micro cylinder (57), one end of the two cylinders (51) is fixed to two sides of the upper part of the clamp mounting member (4), the other end of the two cylinders (51) is fixed to one end of the flange (52), the two flanges (52) are fixed to two sides of the other end of the cylinders (51), and the upper part of the clamp mounting member (4) is provided with obliquely upward protruding arms (41), and the two protruding arms (41) are penetrated by the shaft (53). The other end of the flange (52) is sleeved on the shaft (53), the gear (54) is fixedly sleeved on the middle part of the shaft (53), the two ends of the shaft (53) are fixed to the two ends of the rear backrest fixing member (56), the middle part of the rear backrest fixing member (56) is passed through and fixed by the shaft (53), the rear backrest fixing member (56) is claw-shaped and adapted to the length of the seat, the front side of the upper part of the clamp mounting member (4) is fixed with an upward micro cylinder (57), the top end of the micro cylinder (57) is fixed with one end of a bevel gear (55), and the other end of the bevel gear (55) is overlapped on the surface of the gear (54).

4. The automatic off-line tooling for automobile seats according to claim 3 is characterized in that: The seat cushion fixing mechanism (8) comprises two seat cushion retracting cylinders (81), two connecting blocks (82), four buffering range adjusters (83), four rotating blocks (84) and two seat cushion pressing blocks (85), wherein the two seat cushion retracting cylinders (81) are fixed on both sides of the middle part of the clamp mounting member (4), the connecting blocks (82) are fixed on the bottom surfaces of the seat cushion retracting cylinders (81), the connecting blocks (82) are rotatably connected to the rotating blocks (84) on both sides, the two buffering range adjusters (83) are fixed in one connecting block (82) at the front and rear, and the top surfaces of the seat cushion pressing blocks (85) are vertically connected to the bottom surfaces of the rotating blocks (84).

5. The automatic off-line tooling for automobile seats according to claim 4, characterized in that: The buffering range adjuster (83) is provided with a thread on the upper portion, a spring is provided in the bottom portion, and the bottom surface is in contact with the seat cushion pressing block (85).

6. The automatic off-line tooling for automobile seats according to claim 5, characterized in that: The backrest front fixing mechanism (6) comprises two backrest retracting cylinders (61), six backrest pressure blocks (62), four bearing seats (63), two concentric shafts (64), two tripods (65) and two tension springs (66). The two backrest retracting cylinders (61) are respectively fixed horizontally on both sides of the front middle part of the clamp mounting member (4). A backrest pressure block (62) is fixed at the front end of the backrest retracting cylinder (61). Two bearing seats (63) are fixed on the left and right sides of the lower front part of the clamp mounting member (4). The two ends of the concentric shaft (64) are respectively movably connected to the bearing seats (63). One end of the tripod (65) is located in the middle of the concentric shaft (64) and rotates around the concentric shaft (64). The other two ends of the tripod (65) are in the same vertical plane and fix the two backrest pressure blocks (62). One end of the tension spring (66) is fixed to the front middle part of the clamp mounting member (4) and the other end is fixed to the tripod (65).

7. The automatic off-line tooling for automobile seats according to claim 6, characterized in that: A hook (71) is fixed to the rear portion of the bottom surface of the clamp mounting member (4), and a plurality of circular grooves (72) matching the circular tube at the bottom of the seat are arranged at the front bend of the hook (71).

8. The automatic off-line tooling for automobile seats according to claim 7, characterized in that: The surfaces of the backrest pressing block (62) and the seat cushion pressing block (85) that are in contact with the seat surface are rounded and made of PU material, and the circular groove (72) is also made of PU material.

9. A processing method for automatically unloading automobile seats, characterized in that: The method is implemented by using the automatic off-line tooling for automobile seats according to any one of claims 1 to 8, The processing method comprises the following steps: S1: When the seat positioning tool and the seat thereon arrive at the offline workstation along the assembly line, a signal of arrival is sent to the offline robot (1); S2: The offline robot (1) controls the photo detection mechanism (3) to take a photo of the seat to confirm whether the seat status and position are in the designated area. If it is determined to be "OK", the offline robot (1) picks up the seat according to the following steps; if it is determined to be "NG", the offline robot (1) alarms and stops the action, and manual intervention is performed to place the seat in the designated area and press the start button; S3: The offline robot (1) controls the rear row seat fixture to the seat position, moves the fixture mounting part (4) downward, allows the seat cushion fixing mechanism (7) to be under the round tube under the seat, and then moves the fixture mounting part (4) forward, allows the seat cushion fixing mechanism (7) to be aligned with the round tube on the seat, and then pushes out the cylinder (51) in the backrest fixing mechanism (5) to clamp the backrest, and then pushes out the seat cushion and seat back surfaces by the seat cushion retraction cylinder (81) and the backrest retraction cylinder (61), and then moves the rear row seat fixture upward, at which time the round groove (72) on the seat cushion fixing mechanism (7) fixes the round tube under the seat, and at this time, the four sides of the seat are fixed; S4: The offline robot (1) grabs the seat and places it on the shipping line conveyor plate (22) on the shipping line (21), and the automatic transfer is completed.

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