Torsion bar assembling equipment

Abstract

The invention discloses torsion bar assembly equipment, which belongs to the technical field of assembly, and comprises a rack, and a torsion bar diameter detection device, a torsion bar positioning device and a torsion bar riveting device are fixedly arranged on the rack; the torsion bar positioning device comprises an upper positioning device and a lower positioning device; the upper positioning device comprises a first base and a first cylinder; the output end of the first cylinder is connected with the first base, so that the first base moves up and down along the linear guide rail; a first motor is fixedly arranged on the first supporting seat; the output end of the first motor is connected with a first rod piece, and an upper assembly block is fixedly arranged at the end of the first rod piece. The lower positioning device comprises a second base; a lower assembly block is fixedly arranged on one side of the second base; the lower assembling block is in an inward concave shape, and a set number of protruding parts are arranged on the lower assembling block. The torsion bar diameter measuring device is used for screening torsion bars, the torsion bars, the idler wheels, the support plate and other parts are combined through the positioning device, the torsion bars are pressed and fixed through the riveting device, and assembling of the force limiting device is achieved.

Description

Technical Field

[0001] The invention relates to a torsion bar assembly device, in particular to the technical field of mechanical assembly of force limiting devices. Background Art

[0002] Seat belts are very important passive safety systems in modern automobile safety systems, and seat belt buckles are key components in seat belt systems. When a collision occurs, the commonly used seat belt buckles will generate a large waist force on the occupants. This force will change with the change of the rigidity of the vehicle body, and the change range is large. Excessive waist force will cause greater damage to the occupants in the car. For example, the miniature waist energy absorption device involved in the patent with publication number CN 116001723 A and the name of a miniature waist energy absorption device and seat belt buckle is a seat belt buckle force limiting device. The seat belt buckle force limiting device includes a bracket plate and a steel wire rope, a positioning hole is provided on the bracket plate, a torsion bar is provided in the positioning hole, and rollers are connected to both ends of the torsion bar. The steel wire rope is folded in the middle, and the two ends of the steel wire rope are respectively wound and fixed on the two rollers, and the winding direction of the steel wire rope on the two rollers is opposite. The conventional torsion bar diameter is measured manually using a vernier caliper, which is inefficient. In addition, the torsion bar runs through the entire seat belt buckle force limiting device, and adopts the traditional interference fit, which requires a high degree of fit between the torsion bar and the hole on the roller. How to improve the efficiency of the assembly of the torsion bar and the roller becomes a problem to be solved. Summary of the invention

[0003] The object of the present invention is to provide a torsion bar assembly device, which can assemble the torsion bar with a roller, thereby forming a force limiting device.

[0004] To solve the above technical problems, the purpose of the present invention is achieved as follows: The present invention relates to a torsion bar assembly device, comprising a frame, on which a torsion bar diameter detection device, a torsion bar positioning device and a torsion bar riveting device are fixedly arranged; The torsion bar diameter detection device comprises a photoelectric diameter detection system and a torsion bar fixing rod fixed on one side of a fixing plate, and a third cylinder is fixedly arranged on the other side, a torsion bar fixing groove is arranged on the torsion bar fixing rod, and a piston rod of the third cylinder passes through the fixing plate to fix one end of the torsion bar in the torsion bar fixing groove; the photoelectric diameter detection system comprises a photoelectric transmitter and a photoelectric receiver; The torsion bar positioning device comprises an upper positioning device and a lower positioning device; The upper positioning device includes a first base and a first cylinder; a first support seat is fixedly arranged on one side surface of the first base, and the other side surface is connected to two parallel linear guide rails; the output end of the first cylinder is connected to the first base, so that the first base moves up and down along the linear guide rails; A first motor is fixedly arranged on the first support seat; an output end of the first motor is connected to a first rod through a coupling, and an upper assembly block is fixedly arranged at the end of the first rod; the upper assembly block is concave in shape, and a set number of protrusions are arranged on it; The lower positioning device comprises a second base; a lower assembly block is fixedly arranged on one side of the second base; the lower assembly block is concave in shape and is provided with a set number of protrusions.

[0005] On the basis of the above scheme and as a preferred scheme of the above scheme: the linear guide rail is fixedly arranged on the guide rail fixing plate; and a blocking device is fixedly arranged on the guide rail fixing plate.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: one side surface of the second base is connected to two linear guide rails, and the lower positioning device is also connected to a first synchronous belt and a second synchronous belt.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: two corresponding pairs of detection notches are arranged on the lower assembly block, and photoelectric switches corresponding to the detection notches are also fixedly arranged on the second base.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: a first rotating piece is fixedly provided on one side of the coupling, the first rotating piece has a notch, and a first groove-shaped photoelectric switch corresponding to the first rotating piece is fixedly provided on the first support seat.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: a second support seat is fixedly provided on one side of the second base, and a second motor and a second cylinder are fixedly provided on the second support seat; the output end of the second motor is connected to the pulley transmission through a belt; the pulley is fixedly connected to the rotating sleeve, the rotating sleeve passes through the second base and is fixedly connected thereto, and the end of the rotating sleeve is fixedly connected to the lower assembly block, and the lower assembly block has a through hole along the axial direction.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: a second rotating piece is fixedly provided on one side of the pulley, and the second rotating piece has a notch; a second groove-shaped photoelectric switch is fixedly provided on the second support seat.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the rotating sleeve has a first accommodating cavity arranged along the axial direction, a torsion bar storage column is arranged in the first accommodating cavity, the torsion bar storage column has a second accommodating cavity arranged along the axial direction, and the piston rod in the second cylinder can be inserted into the second accommodating cavity.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme: a cylinder fixing plate is also fixedly arranged on the second base, two first fixing columns and a magnetically coupled barless cylinder are fixedly arranged on the cylinder fixing plate, a connecting plate is fixedly arranged on the magnetically coupled barless cylinder, and a second fixing column is fixedly arranged on the first connecting plate.

[0013] The beneficial effect of the present invention is that the torsion bar assembly equipment involved in the present invention adopts a torsion bar diameter measuring device to screen qualified torsion bars, and combines the torsion bar with components such as rollers and bracket plates through a positioning device, and then presses and fixes them through a riveting device, thereby realizing the assembly of the force limiting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the safety belt buckle force limiting device involved in the present invention; Figure 2 It is the structural diagram of the torsion bar; Figure 3 It is the structural diagram of the roller; Figure 4 is a structural diagram of a torsion bar positioning device; Figure 5 It is a structural diagram of a torsion bar diameter detection device; Figure 6 It is a structural diagram of the connection between the upper positioning device and the guide rail fixing plate; Figure 7 is a structural diagram of the upper positioning device; Figure 8 is a structural diagram of the lower positioning device; Fig. 9 It is a structural diagram of the torsion bar storage column; Fig.10 It is the structural diagram of the upper assembly block; Fig.11 It is the structural diagram of the lower assembly block; Fig.12 It is a structural diagram of the rotating sleeve.

[0015] The markings in the figure are as follows: 100-frame; 200-torsion bar diameter detection device; 300-torsion bar positioning device; 400-blocking device; 1-bracket plate; 2-wire rope; 3-roller; 4-torsion bar; 5-spline slope; 6-roller positioning hole; 7-roller protrusion; 8-first base; 9-first cylinder; 10-linear guide; 11-first support seat; 12-first motor; 13-coupling; 14-first rotating piece; 15-first slot-shaped photoelectric switch; 16-first rod; 17-upper assembly block; 18-second base; 19-lower assembly block; 20-detection gap; 21-protrusion; 22-photoelectric switch; 23-second motor; 24-second support seat; 25 -pulley; 26-second cylinder; 27-piston rod; 28-torsion bar storage column; 29-second fixed column; 30-magnetically coupled leverless cylinder; 31-first connecting plate; 32-storage column flange; 33-second accommodating cavity; 34-lower assembly block protrusion; 35-lower assembly block notch; 36-rotating sleeve; 37-second rotating sheet; 38-second groove-shaped photoelectric switch; 39-first fixed column; 40-first accommodating cavity; 41-cylinder fixing plate; 42-photoelectric receiver; 43-photoelectric transmitter; 44-torsion bar fixing groove; 45-third cylinder; 46-fixed plate; 47-torsion bar fixing rod; 48-guide rail fixing plate; 49-first synchronous belt; 50-second synchronous belt. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] like Figure 1 As shown, the safety belt buckle force limiting device of the present invention comprises a bracket plate, a steel wire rope, a sleeve, a torsion bar and a roller. The bracket plate is provided with a fixing hole for fixing the sleeve (not shown in the figure), and the torsion bar 4 passes through the sleeve, and both ends of the torsion bar 4 have splines, and the roller 3 has a key hole matching the splines at the end of the torsion bar 4, so that a roller 3 is fixedly provided at both ends of the torsion bar 4. Figure 2 As shown in FIG. 1 , a spline inclined surface 5 is provided on the spline. Figure 3 As shown, a roller protrusion 7 is provided on the roller 3 at a position opposite to the spline inclined surface. When the force limiting device is riveted, the roller protrusion 7 can be pressed against the spline inclined surface 5, so that the two are riveted and fixed.

[0018] like Figure 4 As shown, a torsion bar assembly device according to the present invention comprises a frame 100, on which a torsion bar diameter detection device 200, a torsion bar positioning device 300 and a torsion bar riveting device are fixedly arranged. The torsion bar diameter detection device 200 is used to measure the diameter of the torsion bar. If the diameter of the torsion bar is within a certain error range, the next process is carried out, otherwise it is discarded.

[0019] like Figure 5 As shown, the torsion bar diameter detection device 200 includes a photoelectric diameter detection system and a torsion bar fixing rod 47 fixed to one side of a fixing plate 46, and a third cylinder 45 is fixedly arranged on the other side. The torsion bar fixing rod 47 is provided with a torsion bar fixing groove 44, and the piston rod of the third cylinder 45 passes through the fixing plate 46 to fix one end of the torsion bar in the torsion bar fixing groove 44; the photoelectric diameter detection system includes a photoelectric transmitter 43 and a photoelectric receiver 42. The piston rod end of the third cylinder 45 pushes toward one end of the torsion bar from below and fixes the other end of the torsion bar in the torsion bar fixing groove 44. At this time, the photoelectric diameter detection system works, and the photoelectric transmitter 43 and the photoelectric receiver 42 measure the diameter of the torsion bar and display it on the display screen. If the diameter of the torsion bar is within the error range, it is used to assemble the seat belt buckle force limiting device.

[0020] The torsion bar positioning device 300 includes an upper positioning device and a lower positioning device. Figure 4 and 6 As shown, the torsion bar positioning device 300 has two stations. The upper positioning device is fixedly arranged on the guide rail fixing plate 48, and the guide rail fixing plate 48 is fixedly arranged with a blocking device 400 for blocking the movement of the lower positioning device. The blocking device 400 can be a rubber block.

[0021] like Figure 7 As shown, the upper positioning device includes a first base 8 and a first cylinder 9. The first base 8 and the first cylinder 9 are both fixedly connected to the frame. A first support seat 11 is fixedly arranged on one side surface of the first base 8, and the other side surface is connected to two parallel linear guide rails 10; the output end of the first cylinder 9 is connected to the first base 8, that is, the piston rod of the first cylinder 9 can make the first base 8 move up and down along the linear guide rails 10.

[0022] The first support seat 11 is fixedly provided with a first motor 12; the output end of the first motor 12 is connected to a first rod 16 via a coupling 13, and an upper assembly block 17 is fixedly provided at the end of the first rod 16. Fig.10 As shown, the upper assembly block 17 is concave and is provided with a set number of protrusions 21. The number of the protrusions 21 is three, corresponding to the roller positioning holes 6 on the roller 3, and can be inserted into the roller positioning holes 6. The first motor 12 can drive the first rod 16 and the upper assembly block 17 to rotate through the coupling 13, so as to adjust the position of the roller 3.

[0023] Furthermore, a first rotating piece 14 is fixedly provided on one side of the coupling 13, and the first rotating piece 14 has a notch, and a first slot-shaped photoelectric switch 15 corresponding to the first rotating piece 14 is fixedly provided on the first support seat 11. The first slot-shaped photoelectric switches 15 are two in number and are located on the same straight line passing through the center of the first rotating piece 14. When the notch passes through one of the first slot-shaped photoelectric switches 15, the first slot-shaped photoelectric switch 15 is in an on state, and when the first rotating piece 14 passes through one of the first slot-shaped photoelectric switches 15, the first slot-shaped photoelectric switch 15 is off.

[0024] like Figure 8 As shown, the lower positioning device includes a second base 18; a lower assembly block 19 is fixedly disposed on one side of the second base 18. Fig.11 As shown, the lower assembly block 19 is concave, and is provided with a set number of protrusions 21 , and the number of the protrusions 21 is three, which is equivalent to the number of the roller positioning holes 6 in the roller 3 , and can be inserted into the roller positioning holes 6 .

[0025] Furthermore, two pairs of corresponding detection notches 20 are provided on the lower assembly block 19, and photoelectric switches 22 corresponding to the detection notches 20 are fixedly provided on the second base 18. When the two photoelectric switches 22 and a pair of detection notches 20 are located in the same straight line, when one of the rollers is located in the concave area of ​​the lower assembly block 19, the photoelectric switch 22 is in an off state.

[0026] Further, such as Figure 8 As shown, a second support base 24 is fixedly provided on one side of the second base 18, and a second motor 23 and a second cylinder 26 are fixedly provided on the second support base 24; the output end of the second motor 23 is connected to a pulley 25 through a belt; and the pulley 25 is fixedly connected to a rotating sleeve 36. When the second motor 23 is working, the pulley 25 is driven to rotate by the belt, and the rotation of the pulley 25 can drive the rotating sleeve 36 to rotate.

[0027] The rotating sleeve 36 passes through the second base 18 and is fixedly connected thereto, and the end of the rotating sleeve 36 is fixedly connected to the lower assembly block 19. The rotation of the rotating sleeve 36 can drive the rotation of the lower assembly block 19, so that the position of the roller fixed in the concave area of ​​the lower assembly block 19 can be adjusted. The lower assembly block 19 has a through hole along the axial direction.

[0028] Furthermore, a second rotating piece 37 is fixedly provided on one side of the pulley 25, and the second rotating piece 37 has a notch; a second slot-shaped photoelectric switch 38 is fixedly provided on the second support seat 24. The second rotating piece 37 has the same structure as the first rotating piece 14, and the size angle of the notch is 90°, which occupies a quarter of the entire second rotating piece 37. The number of the second slot-shaped photoelectric switches 38 is also two, and they are located on a straight line passing through the center of the second rotating piece 37. Similarly, when one of the second slot-shaped photoelectric switches 38 passes through the notch position, the second slot-shaped photoelectric switch 38 is turned on, and when the second rotating piece 37 passes through other positions, the second slot-shaped photoelectric switch 38 is turned off.

[0029] Further, such as Fig.12 As shown, the rotating sleeve 36 has a first accommodating cavity 40 arranged along the axial direction, and a torsion bar storage column 28 is arranged in the first accommodating cavity. The rotating sleeve 36 also has two ear plates, which are fixedly connected to the second base 18 through the two ear plates. Fig. 9 As shown, the torsion bar storage column 28 has a second accommodating cavity 33 arranged along the axial direction, and the switch of the second accommodating cavity 33 has the same shape as the end of the torsion bar 4, and has a spline groove matching the spline. The piston rod 27 in the second cylinder 26 can be inserted into the second accommodating cavity 33. And the second accommodating cavity 33 is connected to the through hole of the lower assembly block 19. During operation, it is necessary to place several torsion bars 4 in the second accommodating cavity 33. When necessary, the piston rod 27 of the second cylinder 26 pushes the torsion bar up, and the torsion bar can be pushed into the seat belt buckle force limiting device, so that the two ends of the torsion bar 4 are assembled with the two rollers 3.

[0030] Furthermore, two first fixing columns 39 are fixedly provided on the second base 18, and a magnetically coupled barless cylinder 30 is also fixedly provided through a cylinder fixing plate 41, a first connecting plate 31 is fixedly provided on the magnetically coupled barless cylinder 30, and a second fixing column 29 is fixedly provided on the first connecting plate 31. When assembling the torsion bar, the steel wire rope connected thereto needs to be fixed, and the specific operation is to place the steel wire rope close to the bracket plate 1 between the two first fixing columns 39, and the loop portion formed by the folded steel wire rope is sleeved on the second fixing column 29. When the magnetically coupled barless cylinder 30 drives the first connecting plate 31 away from the seat belt buckle force limiting device, the second fixing column 29 tightens the steel wire rope 2, thereby fixing the steel wire rope.

[0031] Furthermore, the second support seat 24 is fixedly connected to the first synchronous belt 49 through a connecting plate, and the cylinder fixing plate 41 is fixedly connected to the second synchronous belt 50. The first synchronous belt 49 and the second synchronous belt 50 jointly drive the lower positioning device to move above the upper positioning device during positioning. The blocking device 400 limits the lower positioning device.

[0032] The torsion bar riveting device is to rivet a roller protrusion 7 on the roller 3 at a position opposite to the spline inclined surface, and press the roller protrusion 7 against the spline inclined surface 5, so that the two are riveted and fixed. Specifically, two molds with the same profile as the roller 3 are used to rivet the positioned and assembled seat belt buckle force limiting device using a high-pressure cylinder, so that the roller protrusion 7 is deformed, so that the roller 3 is fixed to the torsion bar, and the assembly of the seat belt buckle force limiting device is completed.

[0033] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A torsion bar assembly device, characterized in that: It comprises a frame (100), on which a torsion bar diameter detection device (200), a torsion bar positioning device (300) and a torsion bar riveting device are fixedly arranged; The torsion bar diameter detection device (200) comprises a photoelectric diameter detection system and a torsion bar fixing rod (47) fixed to one side of a fixing plate (46); a third cylinder (45) is fixedly arranged on the other side; a torsion bar fixing groove (44) is arranged on the torsion bar fixing rod (47); a piston rod of the third cylinder (45) passes through the fixing plate (46) to fix one end of the torsion bar in the torsion bar fixing groove (44); the photoelectric diameter detection system comprises a photoelectric transmitter (43) and a photoelectric receiver (42); The torsion bar positioning device (300) comprises an upper positioning device and a lower positioning device; The upper positioning device comprises a first base (8) and a first cylinder (9); a first support seat (11) is fixedly provided on one side surface of the first base (8), and the other side surface is connected to two parallel linear guide rails (10); an output end of the first cylinder (9) is connected to the first base (8), so that the first base (8) moves up and down along the linear guide rails (10); A first motor (12) is fixedly mounted on the first support seat (11); an output end of the first motor (12) is connected to a first rod (16) via a coupling (13); an upper assembly block (17) is fixedly mounted on the end of the first rod (16); the upper assembly block (17) is concave in shape and has a set number of protrusions (21) disposed thereon; The lower positioning device comprises a second base (18); a lower assembly block (19) is fixedly arranged on one side of the second base (18); the lower assembly block (19) is concave in shape and is provided with a set number of protrusions (21) thereon.

2. A torsion bar assembly device according to claim 1, characterized in that: The linear guide rail (10) is fixedly arranged on a guide rail fixing plate (48); and a blocking device (400) is fixedly arranged on the guide rail fixing plate (48).

3. A torsion bar assembly device according to claim 1, characterized in that: One side surface of the second base (18) is connected to two linear guide rails, and the lower positioning device is also connected to a first synchronous belt (49) and a second synchronous belt (50).

4. A torsion bar assembly device according to claim 1, characterized in that: Two pairs of corresponding detection notches (20) are provided on the lower assembly block (19), and a photoelectric switch (22) corresponding to the detection notches (20) is also fixedly provided on the second base (18).

5. The torsion bar assembly device according to claim 1, characterized in that: A first rotating piece (14) is fixedly provided on one side of the coupling (13), the first rotating piece (14) having a notch, and a first slot-shaped photoelectric switch (15) corresponding to the first rotating piece (14) is fixedly provided on the first support seat (11).

6. The torsion bar assembly device according to claim 1, characterized in that: A second support base (24) is fixedly arranged on one side of the second base (18), and a second motor (23) and a second cylinder (26) are fixedly arranged on the second support base (24); an output end of the second motor (23) is transmission-connected to a pulley (25) via a belt; the pulley (25) is connected to a rotating sleeve (36), the rotating sleeve (36) passes through the second base (18) and is fixedly connected thereto, and an end of the rotating sleeve (36) is fixedly connected to a lower assembly block (19), and the lower assembly block (19) has a through hole along the axial direction.

7. A torsion bar assembly device according to claim 6, characterized in that: A second rotating piece (37) is fixedly arranged on one side of the pulley (25), and the second rotating piece (37) has a notch; and a second groove-shaped photoelectric switch (38) is fixedly arranged on the second supporting seat (24).

8. The torsion bar assembly device according to claim 6, characterized in that: The rotating sleeve (36) has a first accommodating cavity (40) arranged along the axial direction, a torsion bar storage column (28) is arranged in the first accommodating cavity (40), the torsion bar storage column (28) has a second accommodating cavity (33) arranged along the axial direction, and the piston rod (27) in the second cylinder (26) can be inserted into the second accommodating cavity (33).

9. The torsion bar assembly device according to claim 1, characterized in that: A cylinder fixing plate (41) is also fixedly arranged on the second base (18), and two first fixing columns (39) and a magnetically coupled barless cylinder (30) are fixedly arranged on the cylinder fixing plate (41), and a first connecting plate (31) is fixedly arranged on the magnetically coupled barless cylinder (30), and a second fixing column (29) is fixedly arranged on the first connecting plate (31).

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