Positioning sleeve frame for machining automobile seat bushing

Abstract

The invention discloses a positioning sleeve frame for automobile seat bushing machining, and relates to the technical field of automobile seat bushing machining, the positioning sleeve frame comprises a positioning sleeve frame body, a vertical direction extending frame and a horizontal direction extending frame, a supporting turnover structure is arranged at the bottom of the positioning sleeve frame body, and the supporting turnover structure comprises two connecting seats and a base; according to the positioning sleeve frame for machining the automobile seat bushing, a rotating handle is rotated to drive a worm to rotate, so that a worm gear is driven to rotate in a meshed mode, then one polygonal block is driven to rotate through a rotating shaft, and the two polygonal blocks are driven to rotate through a rotating shaft; according to the positioning sleeve frame, the positioning sleeve frame body is driven to rotate, so that one connecting seat is driven to rotate, the positioning sleeve frame body at the tops of the two connecting seats is driven to rotate, the positioning sleeve frame body is turned over, a worker can conveniently machine the bottom of the automobile seat bushing, and the using effect of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seat bushing processing, in particular to a positioning sleeve frame for automobile seat bushing processing. Background Art

[0002] During the assembly process of automobile seats, bushings are generally installed on the sides of the backrest frames. The bushings can provide good protection for the backrest frames during seat adjustment, and the use of bushings can reduce the wear, vibration and noise of seat components. At present, the bushing assembly method of seat manufacturers is generally manual assembly.

[0003] Although the existing positioning sleeve can effectively position the automobile seat bushing during use, during the processing of the seat bushing, the bushing at the bottom of the seat needs the worker to squat or lie on the bottom of the sleeve to process the bottom of the bushing, which is troublesome to operate and the effect of use is not very good.

[0004] In addition, the existing positioning sleeve lacks a fixing structure for the bushing, and also lacks a safety protection structure, resulting in a poor bushing fixing effect. When the components collide, the components are easily damaged, posing a safety hazard. Summary of the invention

[0005] The purpose of the present invention is to provide a positioning sleeve for processing automobile seat linings, so as to solve the problem in the prior art that during the processing of the seat linings, the linings at the bottom of the seat need to be processed by workers squatting or lying on the bottom of the sleeve to process the bottom of the linings, which is troublesome to operate and the effect of use is not very good.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a positioning sleeve frame for processing automobile seat liner, comprising a positioning sleeve frame body, a vertical extension frame and a horizontal extension frame, a supporting flip structure is arranged at the bottom of the positioning sleeve frame body, the supporting flip structure comprises two connecting seats and a base, the two connecting seats are fixedly mounted on the bottom of the positioning sleeve frame body, a bidirectional screw rod is rotatably mounted on the inner side of the base, support plates are threadedly connected to the outer side of the bidirectional screw rod near both ends, a slide groove is arranged on the top of the base, and the two support plates are arranged inside the slide groove and in sliding contact with the base.

[0007] Preferably, a No. 1 motor is fixedly installed on one side of the base, the output end of the No. 1 motor passes through the base and is fixedly connected to the bidirectional screw rod, a polygonal block is rotatably installed on one side of the two support plates, and a connecting shaft is fixedly installed between the two connecting seats.

[0008] Preferably, a polygonal slot is provided on one side of the two connecting seats, and the polygonal block and the polygonal slot are adaptively matched. Through the set polygonal slot, when the polygonal block rotates, the connecting seat can be driven to rotate together, thereby driving the positioning sleeve body to flip accordingly.

[0009] Preferably, a rotating shaft is fixedly installed on one side of one of the polygonal blocks, one end of the rotating shaft passes through one of the support plates and is fixedly installed with a worm gear, two fixed seats are fixedly installed on one side of one of the support plates, a worm is rotatably installed between the two fixed seats, one end of the worm passes through one of the fixed seats and is fixedly installed with a turning handle, and the worm wheel and the worm are meshingly connected.

[0010] Preferably, an adjustment structure is provided between the positioning sleeve body and the vertical extension frame and between the positioning sleeve body and the horizontal extension frame, the adjustment structure includes two support frames, screws are rotatably installed between the two support frames and the positioning sleeve body, movable plates are threadedly connected to the outer sides of the two screws, connecting plates are fixedly installed on both sides of the two movable plates, and the four connecting plates respectively pass through both sides of the positioning sleeve body and are fixedly connected to the vertical extension frame and the horizontal extension frame respectively.

[0011] Preferably, an L-shaped groove is provided on the inner side of the positioning sleeve body, and the two movable plates are both arranged inside the L-shaped groove and in sliding contact with the positioning sleeve body. The L-shaped groove can effectively limit the movable plate.

[0012] Preferably, a No. 2 motor is fixedly mounted on one side of the two support frames, and one end of the two No. 2 motors passes through the two support frames respectively and is fixedly connected to two screw rods.

[0013] Preferably, the accidental protection structure includes a left support tube and a right support rod, wherein the left support tube is fixed on the right side wall of the left support plate, and the right support rod is arranged on the left side wall of the right support plate, the left support tube is provided with a left support tube through hole along the axial direction, and a threaded groove is arranged on the side wall of the left support tube through hole, the right support rod is rotatably connected to the right support plate, a torsion return spring is arranged between the right support rod and the right support plate, and a protrusion is arranged on the outer side wall of the left end portion of the right support rod, and the protrusion cooperates with the threaded groove to realize the rotation of the right support rod.

[0014] Preferably, the accidental protection structure also includes a control chip and a sensor, the sensor measures the number of rotations of the right support rod, and the control chip sets a threshold value. When the number of rotations of the right support rod exceeds the threshold value, motor No. 1 stops working.

[0015] Preferably, the pitch of the thread groove gradually decreases from the right side to the left side.

[0016] Preferably, the accident protection structure also includes a clamping structure, which includes a plurality of clamping plates, which are arranged on the outer side of the right end of the right support rod, and the clamping plates are connected to the right support rod via a connecting spring.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present application drives the worm to rotate by rotating the handle, thereby driving the worm wheel to mesh and rotate, and then drives one of the polygonal blocks to rotate through the rotating shaft, thereby driving one of the connecting seats to rotate, and driving the positioning sleeve body on the top of the two connecting seats to rotate accordingly, so as to flip the positioning sleeve body, which is convenient for the staff to process the bottom of the car seat liner and improves the use effect of the device.

[0019] 2. The present application drives the bidirectional screw to rotate through motor No. 1, thereby driving the two support plates to move in relative directions, so that the two polygonal blocks slide out of the polygonal slots of the two connecting seats respectively, thereby canceling the supporting and limiting effect on the positioning sleeve body. After replacing the positioning sleeve body with a different width, start motor No. 1 to move the two, and then insert the two polygonal blocks into the polygonal slots of the two connecting seats to complete the replacement. The operation is simple and convenient.

[0020] 3. The present application drives the screw to rotate by the No. 2 motor, thereby driving the movable plate to move, and driving the two connecting plates to move accordingly, thereby adjusting the positions of the vertical extension frame and the horizontal extension frame respectively, so as to be suitable for car seat bushings of different lengths and heights, thereby improving the application range of the device.

[0021] 4. The present application designs a safety protection structure and a bushing fixing structure, which improves the safety of the positioning sleeve and the firm fixation of the bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a positioning sleeve frame for processing a car seat bushing according to the present invention;

[0023] Figure 2 This is a sectional view of the overall structure of a positioning sleeve for processing a car seat liner according to the present invention;

[0024] Figure 3 It is a schematic diagram of a supporting flipping structure of a positioning sleeve frame for processing a car seat liner according to the present invention;

[0025] Figure 4 It is a schematic diagram of the adjustment structure of a positioning sleeve frame for processing a car seat liner according to the present invention;

[0026] Figure 5 It is a schematic diagram of an accidental protection structure of a positioning sleeve frame for processing a car seat liner according to the present invention;

[0027] Figure 6 It is a schematic diagram of a bushing fixing structure of a positioning sleeve frame used for processing a car seat bushing of the present invention;

[0028] Figure 7 It is a schematic diagram of a wire binding groove of a positioning sleeve frame used for processing a car seat liner of the present invention;

[0029] Figure 8 The present invention is a schematic diagram of a linkage limiting structure of a positioning sleeve for processing an automobile seat liner.

[0030] Numbers in the figure: 1, positioning sleeve body; 2, vertical extension frame; 3, horizontal extension frame; 4, connecting seat; 5, base; 6, two-way screw; 7, support plate; 8, No. 1 motor; 9, polygonal block; 11, connecting shaft; 12, worm gear; 13, fixed seat; 14, worm; 15, handle; 16, support frame; 17, screw; 18, moving plate; 19, connecting plate; 20, No. 2 motor; 21, left support cylinder 21; 22, Threaded groove; 23, right support rod; 24, raised block; 25, clamping plate; 26, connecting spring; 27, pulling rod; 28, driving gear; 29, driving gear rod; 30, threading hole; 31, horizontal extension frame through hole; 32, hidden groove; 33, wire binding groove; 34, driving gear shaft; 35, telescopic outer sleeve; 36, telescopic spring; 37, telescopic inner sleeve; 38, tapered block; 39, linkage rod; 40, gear shaft driving block 40. DETAILED DESCRIPTION

[0031] 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.

[0032] Example: Figure 1 - Figure 4 As shown, the present invention provides a technical solution of a positioning sleeve for processing automobile seat linings, including a positioning sleeve body 1, a vertical extension frame 2 and a horizontal extension frame 3. A support flip structure is arranged at the bottom of the positioning sleeve body 1, and the support flip structure includes two connecting seats 4 and a base 5. The two connecting seats 4 are fixedly mounted on the bottom of the positioning sleeve body 1, and a bidirectional screw rod 6 is rotatably mounted on the inner side of the base 5. The outer side of the bidirectional screw rod 6 is threadedly connected with support plates 7 near both ends, and a slide groove is opened on the top of the base 5. The two support plates 7 are arranged inside the slide groove and in sliding contact with the base 5.

[0033] A No. 1 motor 8 is fixedly installed on one side of the base 5, and the output end of the No. 1 motor 8 passes through the base 5 and is fixedly connected to the bidirectional screw rod 6. A polygonal block 9 is rotatably installed on one side of the two support plates 7, and a connecting shaft 11 is fixedly installed between the two connecting seats 4.

[0034] A polygonal slot is formed on one side of the two connecting seats 4, and the polygonal block 9 and the polygonal slot are adaptively matched.

[0035] A rotating shaft is fixedly installed on one side of one of the polygonal blocks 9, one end of the rotating shaft passes through one of the support plates 7 and is fixedly installed with a worm gear 12, two fixed seats 13 are fixedly installed on one side of one of the support plates 7, a worm 14 is rotatably installed between the two fixed seats 13, one end of the worm 14 passes through one of the fixed seats 13 and is fixedly installed with a turning handle 15, and the worm wheel 12 and the worm 14 are meshingly connected.

[0036] Adjustment structures are provided between the positioning sleeve body 1 and the vertical extension frame 2 and between the positioning sleeve body 1 and the horizontal extension frame 3. The adjustment structure includes two support frames 16. Screws 17 are rotatably installed between the two support frames 16 and the positioning sleeve body 1. The outer sides of the two screws 17 are threadedly connected with movable plates 18. Connecting plates 19 are fixedly installed on both sides of the two movable plates 18. The four connecting plates 19 respectively pass through both sides of the positioning sleeve body 1 and are fixedly connected to the vertical extension frame 2 and the horizontal extension frame 3 respectively.

[0037] An L-shaped groove is formed on the inner side of the positioning sleeve body 1 , and the two movable plates 18 are both arranged inside the L-shaped groove and in sliding contact with the positioning sleeve body 1 .

[0038] A No. 2 motor 20 is fixedly mounted on one side of the two support frames 16 , and one end of the two No. 2 motors 20 passes through the two support frames 16 and is fixedly connected to the two screw rods 17 .

[0039] It should be noted that the present invention is a positioning sleeve frame for processing automobile seat linings. When in use, the automobile seat lining to be processed is sleeved on the outer sides of the positioning sleeve frame body 1, the vertical extension frame 2 and the horizontal extension frame 3 for processing. When the bottom of the automobile seat lining needs to be processed, the turning handle 15 drives the worm 14 to rotate, thereby driving the worm gear 12 to mesh and rotate, and then drives one of the polygonal blocks 9 to rotate through the rotating shaft, thereby driving one of the connecting seats 4 to rotate, and driving the positioning sleeve frame body 1 on the top of the two connecting seats 4 to rotate accordingly, so as to flip the positioning sleeve frame body 1, which is convenient for the staff to process the bottom of the automobile seat lining, thereby improving the use effect of the device;

[0040] When it is necessary to process the positioning sleeve body 1 of different widths, the staff holds the positioning sleeve body 1 and then starts the No. 1 motor 8. The model of the No. 1 motor 8 is not described in detail, and the adaptation equipment shall prevail. The No. 1 motor 8 will drive the bidirectional screw rod 6 to rotate, thereby driving the two support plates 7 to move in relative directions, so that the two polygonal blocks 9 slide out of the polygonal slots of the two connecting seats 4 respectively, thereby canceling the supporting and limiting effect of the positioning sleeve body 1. After replacing the positioning sleeve body 1 with a different width, the No. 1 motor 8 is started to move the two, and then the two polygonal blocks 9 are inserted into the polygonal slots of the two connecting seats 4 to complete the replacement. The operation is simple and convenient;

[0041] When it is necessary to adjust according to the different lengths and heights of the car seat bushings, the two No. 2 motors 20 are started respectively. The model of the No. 2 motor 20 is not described in detail, and it shall be subject to the adaptation equipment. The No. 2 motor 20 will drive the screw 17 to rotate, thereby driving the moving plate 18 to move, and driving the two connecting plates 19 to move accordingly, thereby adjusting the positions of the vertical extension frame 2 and the horizontal extension frame 3 respectively, so as to be suitable for car seat bushings of different lengths and heights, thereby improving the application range of the device.

[0042] like Figure 5 As shown, in order to prevent the No. 1 motor 8 from accidentally rotating, causing the two support plates 7 to collide and thus cause motor failure, the present invention also provides an accidental protection structure, which includes a left support tube 21 and a right support rod 23, wherein the left support tube 21 is fixed on the right side wall of the left support plate 7, and the right support rod 23 is arranged on the left side wall of the right support plate 7. The left support tube 21 is provided with a left support tube through hole along the axial direction, and the side wall of the left support tube through hole is provided with a thread groove 22. The right support rod 23 is rotatably connected to the right support plate 7, and a torsion return spring is arranged between the right support rod 23 and the right support plate 7. A protrusion 24 is arranged on the outer side wall of the left end portion of the right support rod 23, and the protrusion 24 cooperates with the thread groove 22 to realize the rotation of the right support rod 23. It also includes a control chip and a sensor, the sensor measures the number of rotations of the right support rod 23, and the control chip sets a threshold value. When the number of rotations of the right support rod 23 exceeds the threshold value, the No. 1 motor 8 stops working.

[0043] In addition, the pitch of the thread groove 22 gradually decreases from the right side to the left side, so that when the two support plates 7 are closer, the right support rod 23 rotates faster, thereby making it easier to control the No. 1 motor 8 to stop working.

[0044] In addition, the accidental protection structure also includes a clamping structure, which includes a plurality of clamping plates 25. The clamping plate 25 is arranged on the outer side of the right end of the right support rod 23. The clamping plate 25 is connected to the right support rod 23 through a connecting spring 26. The working process is as follows: when the two support plates 7 are over-accelerated and approach each other, the right support rod 23 rotates rapidly. Under the action of centrifugal force, the clamping plate 25 is thrown out radially outward along the right support rod 23. When the number of rotations of the right support rod 23 reaches a threshold, the No. 1 motor 8 stops working. As the rotation speed decreases, the clamping plate 25 clamps the left support tube 21 under the action of the restoring force of the connecting spring 26, thereby stopping the two support plates 7 from approaching each other.

[0045] like Figure 6 As shown, further, in order to facilitate the fixing of the bushing, the present invention further provides a bushing fixing structure, which includes a pulling rod 27, a driving gear 28, a driving gear rod 29, a threading hole 30, a horizontal extension frame through hole 31, and a hidden groove 32, wherein the horizontal extension frame 3 is provided with a hidden groove 32 on both sides thereof, and the horizontal extension frame through hole 31, a plurality of driving gears 28 are rotatably arranged in the hidden groove 32, and the plurality of driving gears 28 are horizontally distributed, a driving gear rod 29 is coaxially fixed to the driving gear 28, a plurality of threading holes 30 are provided at the other end of the driving gear rod 29, and the driving gear rod 29 is fixedly arranged on the positioning sleeve frame body 1, and the driving gear rod 29 is provided with a plurality of threading holes 30 ... A rack segment is provided on the other side of the moving gear rod 29, and the rack segment can mesh with the driving gear 28. The working process is as follows: when the bushing is large, and the horizontal extension frame 3 is a certain distance away from the positioning sleeve frame body 1, the rack segment at the end of the driving gear rod 29 first meshes with the driving gear 28 on the left side, and the driving gear 28 rotates to drive the driving gear rod 29 to rotate, and the driving gear rod 29 rotates out of the hidden groove 32, exposing the threading hole 30 from the hidden groove 32. At this time, the rope is passed through the threading hole 30 to fix the bushing. The larger the bushing is, the more driving gears 28 the rack segment contacts, and the more driving gear rods 29 are moved out of the hidden groove 32, thereby better fixing the bushing.

[0046] like Figure 7 As shown, further, in order to facilitate rope knotting and prevent rope sliding, the present invention also includes a wire binding groove 33, and a plurality of wire binding grooves 33 are evenly arranged on the periphery of the driving gear rod 29, and the wire binding groove 33 includes a square bar groove and a round hole groove, and the diameter of the round hole groove is larger than the width of the square round hole groove, wherein the square bar groove is arranged on the outside, and the round hole groove is arranged on the inside, and the square bar groove and the round hole groove are connected. Working process: During the winding process, the rope can enter the round hole groove through the square bar groove to achieve better limitation of the rope, and the wire binding groove can better perform rope knotting and winding and fixing.

[0047] like Figure 8As shown, further, in order to prevent the driving gear 28 from rotating at will, the present invention also includes a linkage limiting structure, which includes a driving gear shaft 34, a telescopic outer sleeve 35, a telescopic spring 36, a telescopic inner sleeve 37, a tapered block 38, a linkage rod 39, and a gear shaft driving block 40, wherein the driving gear shaft 34 is fixed on the driving gear 28, the driving gear shaft 34 is rotatably arranged inside the hidden groove 32, the lower end of the driving gear shaft 34 is provided with a tapered hole, the telescopic outer sleeve 35 is fixedly arranged inside the horizontal extension frame 3, the bottom of the telescopic outer sleeve 35 is connected to the top of the telescopic inner sleeve 37 by the telescopic spring 36, the bottom of the telescopic inner sleeve 37 is fixedly connected to the middle of the linkage rod 39, the left side of the linkage rod 39 is connected by the tapered block 38, and the right side of the linkage rod 39 extends upward The protrusion section is formed, wherein the conical block 38 can cooperate with the conical hole to realize the locking of the driving gear shaft 34. The pulling rod 27 is provided with a lower end protruding from the driving section 40. When the driving section 40 can contact the protrusion section, the conical block 38 can leave the conical hole, thereby realizing the unlocking of the driving gear shaft 34. The working process is as follows: as the pulling rod 27 moves, the driving section 40 under the pulling rod can contact the protrusion section, thereby squeezing the protrusion section downward, thereby driving the linkage rod 39 to move downward, so that the conical block 38 leaves the conical hole, thereby realizing the rotation of the driving gear 28. The rack section on the pulling rod 27 contacts the driving gear 28, driving the driving gear 28 to rotate. When the driving section 40 leaves the protrusion section, the conical block 38 enters the conical hole under the restoring force of the telescopic spring 36, thereby realizing the locking of the driving gear 28.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A positioning sleeve for processing automobile seat linings, characterized in that: The invention comprises a positioning sleeve body (1), a vertical extension frame (2) and a horizontal extension frame (3); a supporting flip structure is arranged at the bottom of the positioning sleeve body (1); the supporting flip structure comprises two connecting seats (4) and a base (5); the two connecting seats (4) are fixedly mounted at the bottom of the positioning sleeve body (1); a bidirectional screw rod (6) is rotatably mounted on the inner side of the base (5); support plates (7) are threadedly connected to the outer side of the bidirectional screw rod (6) near both ends; a slide groove is arranged at the top of the base (5); the two support plates (7) are arranged inside the slide groove and are in sliding contact with the base (5); an accident protection structure is also included.

2. The positioning sleeve for processing a car seat liner according to claim 1, characterized in that: A No. 1 motor (8) is fixedly mounted on one side of the base (5), the output end of the No. 1 motor (8) passes through the base (5) and is fixedly connected to the bidirectional screw rod (6), a polygonal block (9) is rotatably mounted on one side of the two support plates (7), and a connecting shaft (11) is fixedly mounted between the two connecting seats (4); a polygonal slot is opened on one side of the two connecting seats (4), and the polygonal block (9) and the polygonal slot are adaptively matched.

3. The positioning sleeve for processing a car seat liner according to claim 2, characterized in that: A rotating shaft is fixedly mounted on one side of one of the polygonal blocks (9), one end of the rotating shaft passes through one of the support plates (7) and is fixedly mounted with a worm wheel (12), two fixed seats (13) are fixedly mounted on one side of one of the support plates (7), a worm (14) is rotatably mounted between the two fixed seats (13), one end of the worm (14) passes through one of the fixed seats (13) and is fixedly mounted with a turning handle (15), and the worm wheel (12) and the worm (14) are meshingly connected.

4. The positioning sleeve for processing a car seat liner according to claim 1, characterized in that: An adjustment structure is provided between the positioning sleeve body (1) and the vertical extension frame (2) and between the positioning sleeve body (1) and the horizontal extension frame (3), the adjustment structure comprising two support frames (16), screw rods (17) are rotatably installed between the two support frames (16) and the positioning sleeve body (1), the outer sides of the two screw rods (17) are threadedly connected with movable plates (18), and connecting plates (19) are fixedly installed on both sides of the two movable plates (18), and the four connecting plates (19) respectively penetrate the two sides of the positioning sleeve body (1) and are respectively fixedly connected to the vertical extension frame (2) and the horizontal extension frame (3).

5. The positioning sleeve for processing automobile seat lining according to claim 4, characterized in that: An L-shaped groove is provided on the inner side of the positioning sleeve body (1), and the two movable plates (18) are both arranged inside the L-shaped groove and in sliding contact with the positioning sleeve body (1).

6. The positioning sleeve for processing automobile seat lining according to claim 5, characterized in that: A No. 2 motor (20) is fixedly mounted on one side of the two support frames (16), and one end of the two No. 2 motors (20) respectively penetrates the two support frames (16) and is fixedly connected to the two screw rods (17).

7. The positioning sleeve for processing automobile seat lining according to claim 1, characterized in that: The accident protection structure comprises a left support tube (21) and a right support rod (23), wherein the left support tube (21) is fixed on the right side wall of the left support plate (7), and the right support rod (23) is arranged on the left side wall of the right support plate (7); a left support tube through hole is opened in the left support tube (21) along the axial direction, and a thread groove (22) is arranged on the side wall of the left support tube through hole; the right support rod (23) is rotatably connected to the right support plate (7), a torsion return spring is arranged between the right support rod (23) and the right support plate (7), and a protrusion block (24) is arranged on the outer side wall of the left end portion of the right support rod (23); the protrusion block (24) cooperates with the thread groove (22) to realize the rotation of the right support rod (23).

8. The positioning sleeve for processing automobile seat lining according to claim 7, characterized in that: The accident protection structure also includes a control chip and a sensor, the sensor measures the number of rotations of the right support rod (23), and the control chip sets a threshold value. When the number of rotations of the right support rod (23) exceeds the threshold value, the first motor (8) stops working.

9. The positioning sleeve for processing automobile seat lining according to claim 8, characterized in that: The pitch of the thread groove (22) gradually decreases from the right side to the left side.

10. The positioning sleeve for processing automobile seat lining according to claim 9, characterized in that: The accident protection structure also includes a clamping structure, which includes a plurality of clamping plates (25). The clamping plates (25) are arranged on the outside of the right end of the right support rod (23), and the clamping plates (25) are connected to the right support rod (23) via a connecting spring (26).

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