A progressive die for a wiper rocker

Abstract

The utility model belongs to mould technical field relates to a kind of progressive die for wiper rocker arm, including upper die and lower die, the upper die and the lower die between sequentially set up for rough punching rough punching assembly, for fine punching fine punching assembly, for shaping hole finishing assembly, for bending product bending assembly, for shaping product shaping assembly and for cutting off cutting assembly.Through the rough punching assembly, fine punching assembly, finishing assembly, bending assembly, shaping assembly and cutting assembly, rough punching, fine punching, finishing, bending, shaping and shearing are sequentially carried out to material belt, the forming of workpiece can be realized on one machine table by a set of mould, avoids handling workpiece between various machine tables, improves production efficiency, the fine punching assembly, finishing assembly are used to fine punch and shape hole, to ensure that the bright band of hole, tolerance and roundness meet production demand, avoid the risk of out-of-roundness caused by reaming.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a progressive mold for a windshield wiper arm. Background Technology

[0002] The wiper arm is a fundamental component for wiper mounting. During use, the mounting holes at both ends need to be riveted, thus requiring high precision in the smoothness and roundness of the holes. In existing technology, the wiper arm is manufactured by first blanking and forming the material, followed by reaming. This method is cumbersome, requiring the arm to be moved or transported between different processing equipment, resulting in low efficiency. Furthermore, reaming increases the risk of the holes becoming out of round. Therefore, this invention proposes a progressive die for a wiper arm. Utility Model Content

[0003] The main objective of this invention is to provide a progressive die for a wiper arm to solve the problems mentioned in the background art.

[0004] The present invention achieves the above-mentioned objective through the following technical solution: a progressive die for a wiper arm, comprising an upper die and a lower die, wherein a rough punching component for rough punching, a fine punching component for fine punching, a finishing component for shaping the hole, a bending component for bending the product, a shaping component for shaping the product, and a cutting component for cutting the product are sequentially arranged between the upper die and the lower die.

[0005] Preferably, the bottom of the lower mold is provided with a lower pad, a lower mold base, and a lower support plate in sequence; the top of the upper mold is provided with a stop plate, an upper clamping plate, an upper pad, and an upper mold base in sequence.

[0006] Preferably, the rough punching assembly includes a rough punching block disposed in the lower die and a rough punch fixed to the upper clamping plate and penetrating the upper die.

[0007] Preferably, the fine blanking assembly includes a fine blanking hole insert block disposed in the lower die and a fine blanking punch fixed to the upper clamping plate and penetrating the upper die.

[0008] Preferably, the finishing component includes a finishing insert block disposed in the lower die and a finishing punch fixed to the upper clamping plate and extending through the upper die.

[0009] Preferably, the bending assembly includes a bending insert block disposed in the lower die and a bending punch fixed to the upper clamping plate and extending through the upper die.

[0010] Preferably, the shaping component includes a shaping insert block disposed in the lower die and a shaping punch fixed to the upper clamping plate and extending through the upper die.

[0011] Preferably, the cutting assembly includes a cutting insert block disposed in the lower mold and a cutter fixed to the upper clamping plate and extending through the upper mold.

[0012] Preferably, a guide assembly for guiding the strip is provided between the upper mold and the lower mold. The guide assembly includes two guide blocks arranged along the width direction of the mold. The guide blocks are buoyantly mounted on the lower mold base. The top of the guide blocks penetrates the lower mold. A pair of opposite surfaces of the portions of the two guide blocks exposed outside the lower mold are provided with horizontal guide grooves. The strip passes between the two guide blocks and extends into the guide grooves.

[0013] Preferably, a straightening assembly for straightening the material strip is further provided between the upper mold and the lower mold. The straightening assembly includes a fixing block and a straightening block arranged along the width direction of the mold. The fixing block is fixed on the lower mold. The straightening block is L-shaped. The lower mold is provided with a sliding groove. The vertical part of the straightening block is slidably connected in the sliding groove. A spring is provided in the sliding groove. The two ends of the spring are respectively connected to the inner wall of the sliding groove and the side of the vertical part of the straightening block. A push block is fixed on the lower end face of the stop plate. The bottom end of the push block penetrates the upper mold. The lower end face of the push block is set as a first inclined surface facing the straightening block. The side of the upper end face of the horizontal part of the straightening block near the push block is set as a second inclined surface. The lower end face of the upper mold is provided with a clearance groove for avoiding the straightening block and the fixing block.

[0014] The beneficial effects of this utility model are as follows: the material strip is subjected to rough punching, fine punching, finishing, bending, shaping and cutting in sequence through the rough punching assembly, fine punching, finishing, bending, shaping and cutting assembly, and the workpiece forming can be achieved on one machine with one set of molds, avoiding the need to transport the workpiece between different machines and improving production efficiency. The fine punching assembly and finishing assembly are used to fine punch and shape the holes, thereby ensuring that the brightness, tolerance and roundness of the holes meet the production requirements and avoiding the risk of out-of-roundness caused by reaming. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one part of the progressive die structure for the wiper arm in an embodiment.

[0016] Figure 2 This is the second schematic diagram of the progressive die structure for the windshield wiper arm.

[0017] Figure 3 This is a schematic diagram of the guide component structure.

[0018] Figure 4 This is a schematic diagram of the corrective component structure.

[0019] The numbers in the image represent: 1. Upper die; 2. Lower die; 3. Rough punching assembly; 4. Fine punching assembly; 5. Finishing assembly; 6. Bending assembly; 7. Shaping assembly; 8. Cutting assembly; 9. Lower backing plate; 10. Lower die holder; 11. Lower support plate; 12. Stop plate; 13. Upper clamping plate; 14. Upper backing plate; 15. Upper die holder; 16. First guide hole; 17. Second guide hole; 18. Guide rod; 19. Stop block; 20. Nitrogen spring; 21. Rough punching hole insert block; 22. Rough... 23. Punch for punching holes; 24. Punch for punching holes; 25. Punch for finishing holes; 26. Punch for finishing holes; 27. Punch for bending; 28. Punch for bending; 29. ​​Punch for shaping; 30. Punch for shaping; 31. Punch for cutting; 32. Cutting knife; 33. Guide block; 34. Elastic element; 35. Guide groove; 36. Fixing block; 37. Straightening block; 38. Slide groove; 39. Spring; 40. Push block; 41. First inclined plane; 42. Second inclined plane. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to specific embodiments.

[0021] Example: like Figure 1-4 As shown, this utility model discloses a progressive die for a wiper arm. One side of the progressive die is provided with a feeding mechanism for conveying a material belt to it. The progressive die includes an upper die 1 and a lower die 2. Between the upper die 1 and the lower die 2, there are sequentially arranged a rough punching component 3 for rough punching, a fine punching component 4 for fine punching, a finishing component 5 for shaping the hole, a bending component 6 for bending the product, a shaping component 7 for shaping the product, and a cutting component 8 for cutting the product.

[0022] The bottom of the lower mold 2 is sequentially provided with a lower pad plate 9, a lower mold base 10, and a lower support plate 11; the top of the upper mold 1 is sequentially provided with a stop plate 12, an upper clamping plate 13, an upper pad plate 14, and an upper mold base 15. The upper clamping plate 13, the upper pad plate 14, and the upper mold base 15 are fixed by bolts, and the stop plate 12 and the upper mold 1 are fixed by bolts. The upper clamping plate 13 is provided with a first guide hole 16, and the upper pad plate 14 and the upper mold base 15 are provided with a second guide hole 17. The diameter of the first guide hole 16 is smaller than that of the second guide hole 17. A guide rod 18 is connected inside the first guide hole 16. The bottom end of the guide rod 18 passes through the stop plate 12 and is fixed on the lower mold 2. A stop block 19 is fixed at the top end of the guide rod 18. The stop block 19 is located inside the second guide hole 17. A nitrogen spring 20 is connected to the upper mold base 15. One end of the nitrogen spring 20 passes through the upper clamping plate 13 and abuts against the upper end surface of the stop plate 12.

[0023] The rough punching assembly 3 includes a rough punching block 21 disposed in the lower die 2 and a rough punch 22 fixed on the upper clamping plate 13 and passing through the upper die 1. The rough punch 22 cooperates with the rough punching block 21 to perform rough punching on the strip.

[0024] The fine blanking assembly 4 includes a fine blanking hole insert 23 disposed in the lower die 2 and a fine blanking punch 24 fixed on the upper clamping plate 13 and passing through the upper die 1. The fine blanking punch 24 cooperates with the fine blanking hole insert 23 to perform fine blanking on the strip.

[0025] The finishing component 5 includes a finishing insert 25 disposed in the lower die 2 and a finishing punch 26 fixed on the upper clamping plate 13 and passing through the upper die 1. The finishing punch 26 and the finishing insert 25 cooperate to shape the hole.

[0026] The bending assembly 6 includes a bending insert 27 disposed in the lower die 2 and a bending punch 28 fixed on the upper clamping plate 13 and passing through the upper die 1. The bending punch 28 and the bending insert 27 cooperate to bend the workpiece.

[0027] The shaping component 7 includes a shaping insert 29 disposed in the lower mold 2 and a shaping punch 30 fixed on the upper clamping plate 13 and passing through the upper mold 1. The shaping punch 30 and the shaping insert 29 cooperate to shape the bending part of the workpiece.

[0028] The cutting assembly 8 includes a cutting block 31 disposed in the lower mold 2 and a cutter 32 fixed on the upper clamping plate 13 and passing through the upper mold 1. The cutter 32 and the cutting block 31 cooperate to cut the material strip.

[0029] A guide assembly for guiding the material strip is also provided between the upper mold 1 and the lower mold 2. The guide assembly includes two guide blocks 33 arranged along the width direction of the mold. The guide blocks 33 are buoyantly mounted on the lower mold base 10. The top end of the guide block 33 penetrates the lower mold 2. The guide block 33 is movably mounted in a mounting groove provided on the lower mold base 10. An elastic element 34 is provided in the mounting groove to keep the top end of the guide block 33 protruding outside the lower mold 2. The portions of the two guide blocks 33 protruding outside the lower mold 2 are... Each of the two opposing surfaces is provided with a horizontal guide groove 35. The strip passes between the two guide blocks 33 and extends into the guide groove 35, thereby positioning and guiding the strip. When the upper mold 1 is pressed down, the upper mold 1 presses the guide block 33 downward, the elastic element 34 is compressed, and the guide block 33 carries the strip downward through the guide groove 35, so that the strip is tightly attached to the upper end surface of the lower mold 2. When the upper mold 1 is separated, the guide block 33 is reset under the elastic force of the elastic element 34, and the guide block 33 lifts the strip.

[0030] A straightening assembly for straightening the material strip is also provided between the upper mold 1 and the lower mold 2. The straightening assembly includes a fixing block 36 and a straightening block 37 arranged along the width direction of the mold. The fixing block 36 is fixed on the lower mold 2. The straightening block 37 is L-shaped. The lower mold 2 is provided with a sliding groove 38. The vertical part of the straightening block 37 is slidably connected in the sliding groove 38. A spring 39 is provided in the sliding groove 38. The two ends of the spring 39 are respectively connected to the inner wall of the sliding groove 38 and the side of the vertical part of the straightening block 37. A push block 40 is fixed to the lower end face of the stop plate 12. The bottom end of the push block 40 penetrates the upper mold 1. The lower end face of the push block 40 is set as a first inclined surface 41 facing the straightening block 37. The side of the upper end face of the horizontal part of the straightening block 37 near the push block 40 is set as a second inclined surface 42. The lower end face of the upper mold 1 is provided with a clearance groove for avoiding the straightening block and the fixing block. When the mold is closed, the upper mold 1 drives the push block 40 downward. The push block 40 pushes the straightening block 37 inward by abutting against the second inclined surface 42 through the first inclined surface 41. The straightening block 37 and the fixing block 36 cooperate to straighten the material strip and prevent the material strip from bending.

[0031] The working process of this application is as follows: the feeding mechanism conveys the strip to the progressive die, and the progressive die completes the processing of the strip, including rough punching the strip by the rough punching component 3, fine punching the strip by the fine punching component 4 to ensure that the bright band of the hole is above 75% and the hole tolerance is within 0.03, fine finishing the hole by the finishing component 5 to ensure that the roundness of the upper and lower ends of the hole is within the requirements, bending the strip by the bending component 6, shaping the bent part of the strip by the shaping component 7 to make the angle of the forming surface within the required range, and finally cutting the formed workpiece off the strip by the cutting component 8.

[0032] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A progressive die for a wiper rocker arm, characterized by: The device includes an upper die and a lower die. Between the upper die and the lower die, there are sequentially arranged a rough punching component for rough punching, a fine punching component for fine punching, a finishing component for shaping the hole, a bending component for bending the product, a shaping component for shaping the product, and a cutting component for cutting the product.

2. The progressive die for a wiper rocker arm according to claim 1, wherein: The bottom of the lower mold is provided with a lower pad, a lower mold base, and a lower support plate in sequence; the top of the upper mold is provided with a stop plate, an upper clamping plate, an upper pad, and an upper mold base in sequence.

3. The progressive die for a wiper arm according to claim 2, characterized in that: The rough punching assembly includes a rough punching block disposed in the lower die and a rough punch fixed to the upper clamping plate and penetrating the upper die.

4. The progressive die for a wiper rocker arm according to claim 2, wherein: The fine blanking assembly includes a fine blanking hole insert block disposed in the lower die and a fine blanking punch fixed to the upper clamping plate and passing through the upper die.

5. The progressive die for a wiper rocker arm according to claim 2, wherein: The finishing component includes a finishing insert block disposed in the lower die and a finishing punch fixed to the upper clamping plate and extending through the upper die.

6. The progressive die for a wiper arm according to claim 2, characterized in that: The bending assembly includes a bending insert block disposed in the lower die and a bending punch fixed to the upper clamping plate and passing through the upper die.

7. The progressive die for a wiper arm rocker arm as defined in claim 2, wherein: The shaping component includes a shaping insert block disposed in the lower die and a shaping punch fixed to the upper clamping plate and extending through the upper die.

8. The progressive die for a wiper arm rocker arm as defined in claim 2, wherein: The cutting assembly includes a cutting block disposed in the lower mold and a cutting blade fixed to the upper clamping plate and extending through the upper mold.

9. The progressive die for a rain wiper rocker arm according to claim 2, wherein: A guide assembly for guiding the material strip is also provided between the upper mold and the lower mold. The guide assembly includes two guide blocks arranged along the width direction of the mold. The guide blocks are buoyantly mounted on the lower mold base. The top of the guide blocks penetrates the lower mold. A pair of opposite surfaces of the portions of the two guide blocks that are exposed outside the lower mold are provided with horizontal guide grooves. The material strip passes between the two guide blocks and extends into the guide grooves.

10. The progressive die for a rain wiper rocker arm according to claim 2, wherein: A straightening assembly for straightening the material strip is also provided between the upper mold and the lower mold. The straightening assembly includes a fixing block and a straightening block arranged along the width direction of the mold. The fixing block is fixed on the lower mold. The straightening block is L-shaped. The lower mold is provided with a sliding groove. The vertical part of the straightening block is slidably connected in the sliding groove. A spring is provided in the sliding groove. The two ends of the spring are respectively connected to the inner wall of the sliding groove and the side of the vertical part of the straightening block. A push block is fixed on the lower end face of the stop plate. The bottom end of the push block penetrates the upper mold. The lower end face of the push block is set as a first inclined surface facing the straightening block. The side of the upper end face of the horizontal part of the straightening block near the push block is set as a second inclined surface. The lower end face of the upper mold is provided with a push block clearance groove.

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