High-efficiency multi-station transfer module of crossbeam

Abstract

A high-efficiency multi-station transfer die for a crossbeam includes a punch assembly with a punching punch, a shaping punch, and a side punching punch arranged sequentially on the die base. A limiting mechanism and a blanking detection mechanism are provided between the limiting pins surrounding the punching punch. The side punching punch has a slant seat A in the middle of its inner side and slant seats B and C at its outer end. The die assembly has a punching die, a shaping die, and a side punching die on its die base. The side punching die has a square-hole wedge A corresponding to slant seat A, a square-hole wedge B corresponding to slant seat B, and a round-hole wedge corresponding to slant seat C on its outer side. This transfer die simultaneously arranges punching, shaping, and side punching die cores on the die base. Using this die, multiple punching processes of the crossbeam can be continuously completed through transfer, solving the problems of multiple stations and complex operation. Simultaneously, the locking function of the limiting mechanism assists the limiting pins in fixing the workpiece, ensuring the stability of the workpiece after it is placed in position and guaranteeing the punching accuracy of the workpiece.

Description

Technical Field

[0001] The utility model relates to the field of automobile dies, in particular to a high-efficiency multi-station transfer die for cross beams. Background Art

[0002] The C-ring cross beam is a key reinforcing component in the vehicle body structure, which is mostly applied to the rear part of the vehicle body and symmetrically connected to both ends of the floor cross beam. It extends outward and upward along the vehicle width direction from the end of the floor cross beam, and is sequentially connected to the vehicle body floor, the rear wheel housing, the rear wheel housing outer panel and the upper inner panel of the C-pillar, and often forms a closed hollow chamber by enclosing with related components.

[0003] The C-ring cross beam has a "several"-shaped cross section, which is composed of multiple sections of vertically and horizontally arranged beam segments with gentle transitions, can construct a continuous stress transfer path, efficiently disperse the stress on the side of the vehicle body and during driving, and significantly improve the torsional resistance performance of the vehicle body. At present, a combination of multiple sets of dies is usually used to complete the processes such as punching, shaping and side punching of the cross beam. The manufacturing process has many working procedures, and the operation is relatively cumbersome. In addition, the "several"-shaped structure leads to a large contact area with the punch, and the contact friction force easily causes the cross beam to be not placed in place on the punch, which further leads to poor punching accuracy or even workpiece scrap, and needs to be improved. Contents of the Utility Model

[0004] In order to solve the above problems, the utility model proposes a high-efficiency multi-station transfer die for cross beams.

[0005] The technical solution of the utility model is: a high-efficiency multi-station transfer die for cross beams, comprising a punch assembly and a die assembly. The die holder of the punch assembly is sequentially provided with a punching punch, a shaping punch and a side punching punch, and a certain interval is arranged between the three punches. A limiting mechanism and a material falling detection mechanism are arranged between the limiting pins arranged around the punching punch, and the limiting mechanism and the material falling detection mechanism are arranged side by side in pairs. The middle part of the inner side of the side punching punch is provided with a slant seat A, and the outer end part is provided with a slant seat B and a slant seat C, and a certain height difference is provided between the slant seat B and the slant seat C. The die holder of the die assembly is provided with a punching die, a shaping die and a side punching die, and the three dies are arranged in one-to-one correspondence with the three punches. The outer side of the punching die is provided with a pin avoiding groove and a mechanism avoiding groove, and the center is provided with a punch. The outer side of the side punching die is provided with a square hole slant wedge A corresponding to the slant seat A, and the square hole slant wedge A is provided with a square punch; a square hole slant wedge B corresponding to the slant seat B is provided, and the square hole slant wedge B is provided with a square punch; a round hole slant wedge corresponding to the slant seat C is provided, and the round hole slant wedge is provided with a round punch.

[0006] Preferably, the shaping punch is set in a receiving cavity on the die base, and multiple guide blocks are evenly provided on the inclined sidewall of the receiving cavity. The guide blocks are fixed to the inclined sidewall by screws, which facilitates later replacement. Both sides of the shaping die are provided with V-shaped platforms, and the outer side of the V-shaped platform is provided with inclined grooves corresponding to the guide blocks. The size and position of the inclined grooves match the guide blocks.

[0007] Preferably, the limiting mechanism includes a square column base, an L-shaped stop bar, and a torsion spring. The square column base has a square hole in the middle. The upper end of the L-shaped stop bar is hinged to the upper part of the square hole. The torsion spring is disposed in the lower part of the square hole. The torsion spring presses against the lower end of the L-shaped stop bar. The lateral end of the L-shaped stop bar extends laterally from the square hole.

[0008] Preferably, the lower corner of the lateral end of the L-shaped stop bar is provided with a guide slope, and the guide slope is a smooth slope.

[0009] Preferably, the material dropping detection mechanism includes a U-shaped bracket, a drive plate, a trigger plate, a spring, and a photoelectric switch. The lower end of the U-shaped bracket is provided with a base plate. The drive plate is connected inside the U-shaped bracket by a connecting rod, which connects the upper end of the drive plate and the U-shaped bracket. The trigger plate is hinged to the lower part of the U-shaped bracket, and the lower end of the drive plate is hinged to the end of the trigger plate. The spring is supported between the middle part of the drive plate and the middle part of the U-shaped bracket. The middle part of the U-shaped bracket is provided with a cross brace, and the spring is supported between the cross brace and the drive plate. The photoelectric switch is located on the outside of the U-shaped bracket and corresponds to the other end of the trigger plate.

[0010] Preferably, both ends of the forming punch and the side punch are provided with distance sensors, and the end of the punch is provided with an assembly groove, in which the distance sensor is fixed.

[0011] Preferably, both the forming die and the side punching die are slidably installed in the die base. A slider is fixed on the outer side of the die. The die base is provided with a support member that provides elastic support for the forming die and the side punching die. The support member is supported between the bottom surface of the die cavity and the bottom surface of the die. Both the forming die and the side punching die are provided with stroke baffles on the die base at their ends. The stroke baffles are fixed to the die base at the die cavity port by screws.

[0012] The beneficial technical effects of this utility model are as follows: The transfer mold simultaneously arranges punching, shaping, and side punching mold cores on the mold base. Using this mold, multiple stamping processes of the crossbeam can be continuously completed through transfer, solving the problem of multiple workstations and complex operation caused by traditional multi-set mold combinations. At the same time, a blanking detection mechanism is arranged around the punching punch to accurately detect whether the workpiece is placed in place. A limiting mechanism is also set up, and the locking function of the limiting mechanism assists the limiting pin to fix the workpiece, ensuring the stability of the workpiece after it is placed in place, avoiding the workpiece not being placed in place, ensuring the stamping accuracy of the workpiece, and improving the processing quality of the workpiece. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the punch assembly; Figure 3 This is a three-dimensional structural diagram of the die assembly; Figure 4 This is a 3D structural diagram of the material feeding detection mechanism. Figure 5 yes Figure 4 A schematic diagram of the AA-direction cross-section structure; Figure 6 This is a three-dimensional structural diagram of the limiting mechanism; Figure 7 yes Figure 6 Schematic diagram of the BB-direction cross-section structure.

[0014] In the diagram, 1. Punch assembly, 11. Punching punch, 12. Forming punch, 121. Receiving cavity, 122. Guide block, 13. Side punching punch, 14. Limit pin, 15. Slant seat A, 16. Slant seat B, 17. Slant seat C, 18. Blanking groove, 19. Locating pin, 2. Die assembly, 21. Punching die, 211. Pin clearance groove, 212. Mechanism clearance groove, 22. Forming die, 221. V-shaped table, 222. Angled slide, 23. Side punching die 24. Die, 25. Punch, 26. Square hole wedge A, 27. Square hole wedge B, 28. Round hole wedge, 3. Limiting mechanism, 31. Square column base, 32. L-shaped stop bar, 33. Torsion spring, 34. Square hole, 35. Lateral end, 36. Guide slope, 4. Blanking detection mechanism, 41. U-shaped bracket, 42. Drive plate, 421. Inclined platform, 43. Trigger plate, 44. Spring, 45. Photoelectric switch, 46. Connecting rod, 51. Distance sensor, 52. Stroke baffle. Detailed Implementation

[0015] Example 1, see appendix Figure 1-3 A high-efficiency multi-station transfer mold for crossbeams includes a punch assembly 1 and a die assembly 2. The punch assembly 1 has a punching punch 11, a shaping punch 12 and a side punching punch 13 arranged sequentially on the die base. Each punch has a positioning pin 19 at both ends, and a blanking groove 18 is provided at both ends of the side punching punch 13. A limiting mechanism 3 and a blanking detection mechanism 4 are provided between the limiting pins 14 arranged around the punching punch 11. The blanking detection mechanism 4 is used to accurately detect whether the workpiece is placed in place. The limiting mechanism 3 is used to lock the workpiece by assisting the limiting pins 14. The middle of the inner side of the side punching punch 13 is provided with a slant seat A 15, and the outer end is provided with a slant seat B 16 and a slant seat C 17.

[0016] The die base of the die assembly 2 is provided with a punching die 21, a shaping die 22 and a side punching die 2123. The outer side of the punching die 21 is provided with a pin relief groove 211 and a mechanism relief groove 212. When the die is closed, the relief groove is used to accommodate the limiting mechanism 3 and the blanking detection mechanism 4 to avoid conflict. A punch 24 is provided in the center. The outer side of the side punching die 2123 is provided with a square hole wedge A 25 corresponding to the inclined seat A 15, a square hole wedge B 26 corresponding to the inclined seat B 16, and a round hole wedge 27 corresponding to the inclined seat C 17. When the die is closed, the square hole wedge A 25 contacts the inclined seat A 15. The inclined seat A 15 drives the square punch 24 on the square hole wedge A 25 to extend and perform side punching. The square hole wedge B 26 and the round hole wedge 27 perform punching actions simultaneously.

[0017] The forming punch 12 is set in the receiving cavity 121 on the mold base. Multiple guide blocks 122 are evenly arranged on the inclined side wall of the receiving cavity 121. V-shaped platforms 221 are provided on both sides of the forming die 22. The outer side of the V-shaped platform 221 is provided with inclined sliding grooves 222 corresponding to the guide blocks 122. When the mold is closed, the V-shaped platform 221 can slide into the receiving cavity 121 and provide sliding guidance through the guide blocks 122 and inclined sliding grooves 222 to ensure the smoothness of relative sliding. This design is used to provide mold closing guidance for the forming punch 12 and improve the mold closing accuracy.

[0018] Both the forming die 22 and the side punching die 2123 are slidably installed in the die base. The die base is provided with a support member that provides elastic support for the forming die 22 and the side punching die 2123. The support member provides elastic support for the die, so that it has a certain rebound force during the die closing process, avoiding rigid impact damage to the workpiece. Both the forming die 22 and the side punching die 2123 are provided with stroke baffles 52 on the die base at their ends.

[0019] Both ends of the forming punch 12 and the side punch 13 are equipped with distance sensors 51. The distance sensors 51 are used to determine whether the workpiece is attached to the surface of the punch and to determine whether it is in place.

[0020] When this transfer mold is working, the workpiece is first placed on the punching punch 11. After it is in place, the die assembly 2 is driven to move downward to close the mold. After the mold is closed, the workpiece is punched. Then, the die assembly 2 is driven to rise and the workpiece is placed on the shaping punch 12 in the middle. The die assembly 2 is driven to move downward to close the mold, completing the shaping of the workpiece. Finally, the workpiece is placed on the side punching punch 13 for side punching. Using this mold, multiple stamping processes of the crossbeam can be completed continuously through transfer, solving the problem of multiple workstations and complicated operation caused by traditional multi-set mold combinations.

[0021] Example 2, see appendix Figure 2 , 6-7. This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that the limiting mechanism 3 includes a square column base 31, an L-shaped stop bar 32 and a torsion spring 33. The square column base 31 has a square hole 34 in the middle, which extends laterally through the middle of the square column base 31. The upper end of the L-shaped stop bar 32 is hinged to the upper part of the square hole 34. The torsion spring 33 is set at the lower part of the square hole 34. The torsion spring 33 presses against the lower end of the L-shaped stop bar 32, and the torsion spring 33 applies an outward pushing force to the L-shaped stop bar 32. The lateral end 35 of the L-shaped stop bar 32 extends laterally from the square hole 34, and only a short distance is needed.

[0022] The lower corner of the lateral end 35 of the L-shaped stop bar 32 is provided with a guide slope 36. The function of the guide slope 36 is to enable the workpiece to push the L-shaped stop bar 32 outward by relying on the guide slope 36.

[0023] The principle of the limiting mechanism 3 is as follows: When the workpiece is placed into the punch, it will contact the upper part of the horizontal end 35 of the L-shaped stop bar 32 and press the horizontal end 35 down. The L-shaped stop bar 32 will rotate against the elastic force of the torsion spring 33. When the horizontal end 35 enters the square hole 34 with the rotation, the workpiece will pass over the horizontal end 35. After passing over, the horizontal end 35 will reset under the elastic force of the torsion spring 33 and press against the edge of the workpiece. The auxiliary limiting pin 14 will fix the workpiece and ensure the stability of the workpiece after it is placed in place. After the workpiece is stamped, it will be picked up and contacted with the guide slope 36. The L-shaped stop bar 32 will be pushed outward by the guide slope 36. The L-shaped stop bar 32 will again overcome the elastic force of the torsion spring 33 and return to the square hole 34. The workpiece will be successfully removed from the punch.

[0024] Example 3, see appendix Figure 2 , 4 -5. This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that the material dropping detection mechanism 4 includes a U-shaped bracket 41, a drive plate 42, a trigger plate 43, a spring 44, and a photoelectric switch 45. The drive plate 42 is connected to the U-shaped bracket 41 through a connecting rod 46. The upper corner of the drive plate 42 is provided with a ramp 421. The trigger plate 43 is hinged to the lower part of the U-shaped bracket 41. The trigger plate 43 is triangular in shape. The lower end of the drive plate 42 is hinged to the end of the trigger plate 43. The hinge point is the lower corner of the triangle of the trigger plate 43. The spring 44 is supported between the middle part of the drive plate 42 and the middle part of the U-shaped bracket 41. The middle part of the drive plate 42 is provided with two notches. The spring 44 is inserted into the convex plate formed between the two notches. The photoelectric switch 45 is set on the outside of the U-shaped bracket 41 and corresponds to the other end of the trigger plate 43.

[0025] The principle of the blanking detection mechanism 4 is as follows: when the workpiece is placed on the punch, the edge of the workpiece will contact the inclined plate 421 of the drive plate 42. The downward pressure will cause the inclined plate 421 to compress the spring 44 and swing outward. The swing of the drive plate 42 will drive the trigger plate 43 to swing. The outer end of the trigger plate 43 will be vertically displaced. After the workpiece is placed in place, the outer end of the trigger plate 43 will just block the photoelectric switch 45. The photoelectric switch 45 will send a signal that the workpiece is placed in place. When the workpiece is stamped and removed from the punch, the rebound force of the spring 44 will reset the drive plate 42.

Claims

1. A high-efficiency multi-station transfer module for crossbeams, characterized in that: The assembly includes a punch assembly and a die assembly. The punch assembly has a punching punch, a shaping punch, and a side punching punch arranged sequentially on its die base. The punching punch is surrounded by limiting pins and has a limiting mechanism and a blanking detection mechanism. The side punching punch has a slant seat A in the middle of its inner side and slant seats B and C at its outer end. The die assembly has a punching die, a shaping die, and a side punching die on its die base. The punching die has a pin clearance groove and a mechanism clearance groove on its outer side and a punch in its center. The side punching die has a square hole wedge A corresponding to slant seat A, a square hole wedge B corresponding to slant seat B, and a round hole wedge corresponding to slant seat C on its outer side.

2. The high-efficiency multi-station transfer module for crossbeams according to claim 1, characterized in that: The shaping punch is set in a receiving cavity on the die base. Multiple guide blocks are evenly arranged on the inclined side wall of the receiving cavity. V-shaped platforms are provided on both sides of the shaping die. The outer side of the V-shaped platform is provided with inclined sliding grooves corresponding to the guide blocks.

3. The high-efficiency multi-station transfer module for crossbeams according to claim 1, characterized in that: The limiting mechanism includes a square column base, an L-shaped stop bar, and a torsion spring. The square column base has a square hole in the middle. The upper end of the L-shaped stop bar is hinged to the upper part of the square hole. The torsion spring is located at the lower part of the square hole. The torsion spring presses against the lower end of the L-shaped stop bar. The lateral end of the L-shaped stop bar extends laterally from the square hole.

4. The high-efficiency multi-station transfer module for crossbeams according to claim 3, characterized in that: The lower corner of the lateral end of the L-shaped stop bar is provided with a guide slope.

5. The high-efficiency multi-station transfer module for crossbeams according to claim 1, characterized in that: The material dropping detection mechanism includes a U-shaped bracket, a drive plate, a trigger plate, a spring, and a photoelectric switch. The drive plate is connected inside the U-shaped bracket by a connecting rod. The trigger plate is hinged to the lower part of the U-shaped bracket. The lower end of the drive plate is hinged to the end of the trigger plate. The spring is supported between the middle part of the drive plate and the middle part of the U-shaped bracket. The photoelectric switch is located on the outside of the U-shaped bracket and corresponds to the other end of the trigger plate.

6. The high-efficiency multi-station transfer module for crossbeams according to claim 1, characterized in that: Distance sensors are provided at both ends of the forming punch and the side punch.

7. The high-efficiency multi-station transfer module for crossbeams according to claim 1, characterized in that: Both the forming die and the side punching die are slidably installed in the die base. The die base is provided with a support member that provides elastic support for the forming die and the side punching die. Both the forming die and the side punching die are provided with stroke baffles on the die base at their ends.

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