Stamping die with precise guiding structure

Abstract

The utility model provides a kind of stamping die with precision guide structure belongs to stamping die technical field.This stamping die includes upper roof, upper die plate, compression plate, male die, female die and lower bottom plate, and lower bottom plate outer edge is fixed with guide bushing, and upper roof is fixed with the guide column of insertion guide bushing, and male die includes main body, flanging portion, punching head from top to bottom in sequence, and the female die is opened with the flanging hole and installation cavity that communicate, and the blanking cylinder is fixed on lower bottom plate, and the polishing piece that can slide up and down is sleeved on blanking cylinder, and the polishing piece includes grinding disc, polishing gear and backing plate, and grinding disc is embedded on polishing gear upper end surface and rotates synchronously with polishing gear, and backing plate upper end surface and polishing gear lower end surface slide fit, and blanking cylinder is sleeved with second spring, and motor is fixed in installation cavity, and the driving gear that is engaged with polishing gear is fixed on the output shaft of motor.Grinding disc is adjusted height by second spring self-adapting, so that grinding disc can always abut against the edge of flanging.

Description

Technical Field

[0001] This utility model belongs to the field of stamping die technology, and relates to a stamping die with a precision guiding structure. Background Technology

[0002] Flanged holes are a common structure in the use of thin steel sheets. There are two common methods for flanging holes in the industry. One method is to punch a small hole first, and then flanging it. The disadvantage of this process is that it requires two steps, resulting in low efficiency. The other method is to complete punching and flanging in the same step. However, because there is no support at the bottom to cut during punching, many burrs are left on the edge after punching the small hole. It is necessary to transfer the die to a deburring station to reposition and grind off the burrs. Therefore, it is necessary to design a stamping die that can grind the edges after punching and flanging. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a stamping die with a precision guiding structure, which includes a grinding part for grinding burrs on the edge of the flange. The grinding disc is adaptively adjusted in height by a second spring, and the height is adjusted according to different flange heights so that the grinding disc can always be against the edge of the flange.

[0004] The purpose of this utility model can be achieved through the following technical solution: A stamping die with a precision guiding structure includes an upper top plate, an upper template, a clamping plate, a punch, a die, and a lower bottom plate. The cylindrical punch is embedded in the upper template, the upper top plate and the upper end face of the lower template are abutted and fixed by bolts, the die is fixed on the lower bottom plate, a guide sleeve is fixed on the outer edge of the lower bottom plate, and a guide post inserted into the guide sleeve is fixed on the upper top plate. The punch includes a main body, a flanged part, and a punching head from top to bottom. Limiting holes are opened on the upper top plate and the upper template. A limiting rod is fixed to the upper end face of the clamping plate. The limiting rod passes through the limiting hole. A first spring is sleeved on the limiting rod. The upper end of the first spring abuts against the upper template, and the lower end of the first spring abuts against the clamping plate. A limiting block is fixed to the upper end of the limiting rod.

[0005] The die has a connecting flange hole and a mounting cavity. The flange hole is coaxial with the punch. A blanking cylinder is fixed on the bottom plate. A grinding component that can slide up and down is fitted on the blanking cylinder. The grinding component includes a grinding disc, a grinding gear, and a pad. The grinding disc is embedded in the upper end face of the grinding gear and rotates synchronously with the grinding gear. The upper end face of the pad slides in fit with the lower end face of the grinding gear. A second spring is fitted on the blanking cylinder. The upper end of the second spring abuts against the lower end face of the pad, and the lower end of the second spring abuts against the bottom plate. A motor is fixed in the mounting cavity. A drive gear meshing with the grinding gear is fixed on the output shaft of the motor.

[0006] Furthermore, the flanged part is truncated cone-shaped, and the punch head has a central circular hole.

[0007] Furthermore, the lower base plate has inclined dust removal holes that connect to the bottom of the mounting cavity. Burrs, debris, and dust that fall off after grinding the flanged edges can be discharged from the mounting cavity through the dust removal holes.

[0008] Furthermore, the clamping plate has a sliding hole for the punch to pass through, and the diameter of the sliding hole is the same as the diameter of the main body.

[0009] Furthermore, the thickness of the drive gear is greater than the thickness of the grinding gear.

[0010] Furthermore, the thickness of the drive gear is three times the thickness of the grinding gear.

[0011] Furthermore, the blanking cylinder and the flanging hole are coaxially aligned. Waste sheets produced after punching can fall out of the mold through the blanking cylinder.

[0012] The hydraulic press is started, and the upper plate descends, causing the punch head of the die to punch a small hole in the material plate. The punch continues to descend, pressing the edge of the small hole downwards through the flange, and finally, the main body flattens and shapes the flange. During flange formation, the downward bending of the small hole edge presses against the upper surface of the grinding disc, causing the grinding disc to descend. Scrap material falls out of the unloading cylinder, and the grinding part is lifted by the force of the second spring, rising along the outer wall of the unloading cylinder, ensuring the grinding disc remains in contact with the edge of the flange. The motor is started, driving the grinding gear and grinding disc to rotate. The upper surface of the grinding disc scrapes against the edge of the flange, removing burrs. Because there are multiple dust collection holes, burr dust can quickly fall through them and will not accumulate in the mounting cavity.

[0013] Compared with existing technologies, this stamping die with a precision guiding structure has the following advantages:

[0014] 1. It has two sets of guiding mechanisms, namely the cooperation between the guide sleeve and the guide post, and the cooperation between the clamping plate and the punch, which enables the punch to accurately punch and flang the material plate, making the guidance more precise.

[0015] 2. A grinding part with burrs on the edge of the flange, the grinding disc is adaptively adjusted in height by a second spring, and is adjusted according to different flange heights so that the grinding disc can always be against the edge of the flange. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of a stamping die with a precision guiding structure.

[0017] Figure 2 This is a schematic diagram of the structure of the grinding part.

[0018] Figure 3 This is a partial schematic diagram of the bottom plate.

[0019] Figure 4 This is a sectional view of the punch.

[0020] In the diagram, 1. Upper top plate; 2. Upper template; 3. Pressure plate; 31. Sliding hole; 4. Punch; 41. Main body; 42. Flanged part; 43. Punch head; 44. Center hole; 5. Die; 51. Flanged hole; 52. Mounting cavity; 6. Lower bottom plate; 61. Dust removal hole; 7. Guide sleeve; 8. Guide post; 9. Limiting hole; 10. Limiting rod; 11. First spring; 12. Limiting block; 13. Blanking cylinder; 14. Grinding part; 141. Grinding disc; 142. Grinding gear; 143. Pad; 15. Second spring; 16. Motor; 17. Drive gear. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] like Figure 1 As shown, this stamping die with a precision guiding structure includes an upper top plate 1, an upper template 2, a clamping plate 3, a punch 4, a die 5, and a lower bottom plate 6. The cylindrical punch 4 is embedded in the upper template 2. The upper top plate 1 is abutted against the upper end face of the lower template and fixed with bolts. The die 5 is fixed on the lower bottom plate 6. A guide sleeve 7 is fixed to the outer edge of the lower bottom plate 6, and a guide post 8 inserted into the guide sleeve 7 is fixed on the upper top plate 1. Figure 4 As shown, the punch 4 includes, from top to bottom, a main body 41, a flanged part 42, and a punch head 43. The flanged part 42 is frustum-shaped, and the punch head 43 has a central circular hole 44. The clamping plate 3 has a sliding hole 31 for the punch 4 to pass through, and the diameter of the sliding hole 31 is the same as the diameter of the main body 41.

[0023] Limiting holes 9 are opened on the upper top plate 1 and the upper template 2. A limiting rod 10 is fixedly connected to the upper end face of the pressing plate 3. The limiting rod 10 passes through the limiting hole 9. A first spring 11 is sleeved on the limiting rod 10. The upper end of the first spring 11 abuts against the upper template 2, and the lower end of the first spring 11 abuts against the pressing plate 3. A limiting block 12 is fixed to the upper end of the limiting rod 10.

[0024] The die 5 has a connecting flange hole 51 and a mounting cavity 52. ​​The flange hole 51 is coaxially arranged with the punch 4. A blanking cylinder 13 is fixed on the bottom plate 6. A grinding part 14 that can slide up and down is sleeved on the blanking cylinder 13.

[0025] like Figure 2As shown, the grinding component 14 includes a grinding disc 141, a grinding gear 142, and a pad 143. The grinding disc 141 is embedded in the upper surface of the grinding gear 142 and rotates synchronously with the grinding gear 142. The upper surface of the pad 143 is slidably engaged with the lower surface of the grinding gear 142. The pad 143 is fitted onto the unloading cylinder 13 and slides up and down along the unloading cylinder 13. A second spring 15 is fitted over the unloading cylinder 13. The upper end of the second spring 15 abuts against the lower surface of the pad 143, and the lower end of the second spring 15 abuts against the lower base plate 6. Under the force of the second spring 15, the pad 143 is pushed upward, which also pushes the grinding gear 142 and the grinding disc 141 upward, so that the grinding disc 141 contacts and rubs against the flange of the material plate. The thickness of the driving gear 17 is greater than that of the grinding gear 142, so even if the grinding gear 142 moves up and down a small distance, it will not disengage. A motor 16 is fixed inside the mounting cavity 52, and a drive gear 17 meshing with a grinding gear 142 is fixed on the output shaft of the motor 16.

[0026] like Figure 3 As shown, the lower base plate 6 has an inclined dust removal hole 61, which connects to the bottom of the mounting cavity 52. ​​Burrs, debris, and dust that fall off after grinding the flanged edge can be discharged from the mounting cavity 52 through the dust removal hole 61.

[0027] The thickness of the drive gear 17 is greater than the thickness of the grinding gear 142, and the thickness of the drive gear 17 is three times the thickness of the grinding gear 142.

[0028] The blanking cylinder 13 and the flange hole 51 are coaxially arranged. The waste pieces generated after punching can fall out of the mold through the blanking cylinder 13.

[0029] The hydraulic press is started, and the upper plate 1 descends, causing the punch head 43 of the punch 4 to punch a small hole in the material plate. The punch 4 continues to descend, pressing the edge of the small hole downwards through the flange part 42. Finally, the body 41 flattens and shapes the flange part 42. During flangening, the downward bending of the small hole edge can press the upper surface of the grinding disc 141, causing the grinding disc 141 to descend. The waste material falls out of the discharge cylinder 13, and the grinding part 14 receives the elastic force of the second spring 15, causing it to rise along the outer wall of the discharge cylinder 13, so that the grinding disc 141 always abuts against the edge of the flange. The motor 16 is started, driving the grinding gear 142 and the grinding disc 141 to rotate. The upper surface of the grinding disc 141 scrapes the edge of the flange, causing the burrs to fall off. Since there are multiple dust removal holes 61, the burr dust can fall quickly from the dust removal holes 61 and will not accumulate in the mounting cavity 52.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A stamping die with a precision guiding structure, comprising an upper top plate, an upper template, a clamping plate, a punch, a die, and a lower bottom plate, characterized in that, A cylindrical punch is embedded in the upper template. The upper top plate and the upper end face of the lower template are abutted and fixed by bolts. The die is fixed on the lower base plate. A guide sleeve is fixed on the outer edge of the lower base plate. A guide post for inserting the guide sleeve is fixed on the upper top plate. The punch includes a main body, a flanged part, and a punch head from top to bottom. Limiting holes are opened on the upper top plate and the upper template. A limiting rod is fixed to the upper end face of the clamping plate. The limiting rod passes through the limiting hole. A first spring is sleeved on the limiting rod. The upper end of the first spring abuts against the upper template. The lower end of the first spring abuts against the clamping plate. A limiting block is fixed to the upper end of the limiting rod. The die has a connecting flange hole and a mounting cavity. The flange hole is coaxial with the punch. A blanking cylinder is fixed on the bottom plate. A grinding component that can slide up and down is fitted on the blanking cylinder. The grinding component includes a grinding disc, a grinding gear, and a pad. The grinding disc is embedded in the upper end face of the grinding gear and rotates synchronously with the grinding gear. The upper end face of the pad slides in fit with the lower end face of the grinding gear. A second spring is fitted on the blanking cylinder. The upper end of the second spring abuts against the lower end face of the pad, and the lower end of the second spring abuts against the bottom plate. A motor is fixed in the mounting cavity. A drive gear meshing with the grinding gear is fixed on the output shaft of the motor.

2. A stamping die with a precision guiding structure according to claim 1, characterized in that, The flanged part is shaped like a frustum, and the punch head has a central round hole.

3. A stamping die with a precision guiding structure according to claim 1, characterized in that, The bottom plate has an inclined dust removal hole, which connects to the bottom of the mounting cavity.

4. A stamping die with a precision guiding structure according to claim 1, characterized in that, The clamping plate has a sliding hole for the punch to pass through, and the diameter of the sliding hole is the same as the diameter of the main body.

5. A stamping die with a precision guiding structure according to claim 1, characterized in that, The thickness of the drive gear is greater than the thickness of the grinding gear.

6. A stamping die with a precision guiding structure according to claim 5, characterized in that, The thickness of the drive gear is three times that of the grinding gear.

7. A stamping die with a precision guiding structure according to claim 1, characterized in that, The blanking cylinder and the flange hole are set coaxially.

Images