CN213195278U - Stamping die - Google Patents

Abstract

The utility model provides a stamping die, its structure includes mould and bed die, it includes a terrace die to go up the mould, the terrace die is equipped with a bellying, the outer convex surface of bellying is the cambered surface, the bed die includes a die, the die is in the bellying corresponds the position and is equipped with a depressed part, the bellying with the depressed part matches, die upper surface symmetry has set firmly two fixing device, fixing device is used for fixed sheet material. The utility model discloses simple structure, when the sudden change department of sheet material needs the turn-ups, with the sudden change department stretch into the mould in, aim at sudden change department and exert pressure to the bellying through the mould with the bellying, make the camber of sudden change department diminish, take place stress concentration phenomenon in this position when avoiding the sheet material turn-ups, on the other hand, fixing device's setting for the position can be fixed during the sheet material punching press, and the punching press position is more accurate.

Description

Stamping die

Technical Field

The utility model relates to a punching press technical field, in particular to stamping die.

Background

In the stamping forming process of the plate, due to the shape of a product and the requirement during assembly, the flanging of the plate is a common design structure, the flanging can not only increase the welding area of a part and improve the rigidity and the strength of the part, but also can make the edge of a workpiece smooth and improve the assembly effect.

However, in the actual production of the curved surface flanging, because the trimming line is unreasonable, the flanging part is sometimes accompanied with sudden change, when the curvature of the flanging part is too large during flanging forming, the tangential strain is increased, the stress concentration phenomenon is easy to occur, when the stretching degree exceeds the strength limit which can be borne by the material, namely the stretching amount of the material flowing in the forming process exceeds the maximum stretching rate allowed by the material, the flanging structure of the part often has the defect of cracking, and the quality of the finished piece is reduced.

In the prior art, the thickness of a plate is reduced and the flanging height of the plate is reduced according to calculation so as to reduce the risk of flanging cracking. Due to the fact that the thickness of the plate and the flanging height are changed, in the actual assembly process, the strength of the plate is probably not enough, and the assembly size is probably changed. When the problems exist in the stamping parts of key parts of certain automobiles or equipment, the strength of the automobiles or the equipment can be reduced, and even the safety of personnel can be endangered.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a stamping die to the defect problem that the fracture often can appear in part turn-ups structure among the solution prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a stamping die, its structure includes mould and bed die, it includes a terrace die to go up the mould, the terrace die is equipped with a bellying, the outer convex surface of bellying is the cambered surface, the bed die includes a die, the die is in the bellying corresponds the position and is equipped with a depressed part, the bellying with the depressed part matches, die upper surface symmetry has set firmly two fixing device, fixing device is used for fixed sheet material.

Furthermore, the fixing device is a rectangular plate, a first through hole is formed in the middle of the rectangular plate, a second through hole is formed in the corresponding position of the female die, and a bolt sequentially penetrates through the first through hole and the second through hole to fix the fixing device on the female die.

Furthermore, the male die is provided with two notches at the corresponding positions of the fixing device, and the size of each notch is larger than that of the fixing device.

Further, the convex surface of the convex part is a half conical side surface.

Furthermore, the upper die further comprises an upper die holder and a plurality of guide sleeves, the lower die further comprises a lower die holder and guide pillars with the same number as the guide sleeves, the guide sleeves and the male die are fixed on the upper die holder, and the guide pillars and the female die are fixed on the lower die holder.

Furthermore, the guide post is sleeved with a spring, and the height of the spring is smaller than that of the guide post.

Further, a first base plate is arranged between the male die and the upper die holder and used for buffering impact of the male die on the upper die holder.

Furthermore, a flange part is circumferentially arranged at the middle position of the guide sleeve and is attached to the bottom surface of the upper die base.

Further, a second base plate is arranged between the female die and the lower die holder.

Furthermore, a die handle is fixedly arranged at the upper end of the upper die base.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses simple structure, on the one hand, when the sudden change department of sheet material needs the turn-ups, stretch into the mould with sudden change department in, aim at sudden change department with the bellying and exert pressure to the bellying through the mould, make the camber of sudden change department diminish, take place stress concentration phenomenon and make the sheet material fracture in this position at this position when avoiding the sheet material turn-ups, on the other hand, fixing device's setting for the position can be fixed during the sheet material punching press, and the punching press position is more accurate.

Drawings

Fig. 1 is a front view of a stamping die according to a first embodiment of the present invention;

fig. 2 is a left side view of the stamping die according to the first embodiment of the present invention;

fig. 3 is a plan view of a stamping die according to a first embodiment of the present invention;

fig. 4 is an isometric view of a stamping die in a first embodiment of the present invention;

description of the main element symbols:

the following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a stamping die 10 according to a first embodiment of the present invention is shown, which includes an upper die 11 and a lower die 12.

As shown in fig. 2 to 4, the upper die 11 includes an upper die holder 112, four guide sleeves 111, and a male die 114, the male die 114 is provided with a convex portion, the convex surface of the convex portion is an arc surface, and in order to change the stamping area of the plate, the convex surface of the convex portion is a half conical side surface. Meanwhile, in order to facilitate the press machine to clamp the upper die holder 112, a die handle is fixedly arranged at the upper end of the upper die holder 112. The lower mold 12 includes a lower mold base 125, guide posts 122 and a female mold 121, the number of the guide posts is the same as that of the guide sleeves 111, and the female mold 121 is provided with a concave part at a position corresponding to the convex part, and the convex part is matched with the concave part. The guide sleeve 111 is fixed at four corners of the upper die holder 112, a flange part is circumferentially arranged at the middle position of the guide sleeve 111, and the flange part is attached to the bottom surface of the upper die holder 112. The guide post 122 is fixed on the lower die holder 125 and corresponds to the guide sleeve 111. In order to better restore the upper mold 11, the guide post 122 is sleeved with a spring 123, and the height of the spring 123 is smaller than that of the guide post 122, so that after the upper mold 11 descends, the upper mold 11 can be restored to the initial position by the resilience of the spring 123.

It should be noted that, in order to better fix the sheet material during the sheet material stamping process, as shown in fig. 4, two fixing devices 126 are symmetrically and fixedly arranged on the upper surface of the die 121. The fixing device 126 is a rectangular plate, a first through hole is formed in the middle of the rectangular plate, a second through hole is formed in the corresponding position of the female die 121, and the bolt sequentially penetrates through the first through hole and the second through hole to fix the fixing device 126 on the female die 121. According to different shapes of the plates, the bolts can be loosened to adjust the fixing devices 126 to different angles, and then the bolts are screwed down. Since the punch 114 may collide with the fixing device 126 during the downward movement of the upper mold 11, in order to prevent this, the punch 114 is provided with two notches at the corresponding positions of the fixing device 126, and the length, width and height of each notch are greater than those of the fixing device 126.

Since the punch 114 has a large impact force on the upper die base 112 during the stamping process of the die, in order to buffer the impact of the punch 114 on the upper die base 112, as shown in fig. 2, a first cushion plate 113 is arranged between the punch 114 and the upper die base 112, and when the punch 114 is subjected to a large force, the first cushion plate 113 effectively protects the upper die base 112. Similarly, a second cushion plate 124 is arranged between the die 121 and the lower die holder 125, and the second cushion plate 124 effectively protects the lower die holder 125.

In this embodiment, the working process of the stamping die 10 is as follows: the abrupt change part of the plate is placed into a die, the bolt is loosened, the position of the fixing device 126 is adjusted to enable the fixing device 126 to fix the plate, the bolt is screwed, then the press machine is started to enable the male die 114 to descend to punch the plate, and the punching area of the plate can be changed by changing the length of the plate extending into the die.

To sum up, the utility model discloses stamping die 10 in the middle of the above-mentioned embodiment, the utility model discloses simple structure, on the one hand, when the sudden change department of sheet material needs the turn-ups, stretch into the mould with the sudden change department, aim at the sudden change department and exert pressure to the bellying through the mould with the bellying, the camber that makes the sudden change department diminishes, take place stress concentration phenomenon and make the sheet material split at this position when avoiding the sheet material turn-ups at this position, on the other hand, fixing device 126's setting, the position can be fixed during the sheet material punching press, the punching press position is more accurate, and simultaneously, the setting of first backing plate 113 and second backing plate 124, the guard action has been played upper die base 112 and die holder 125 effectively, the setting of spring 123, make upper die 11 reset more high-efficient.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a stamping die, its structure includes mould and bed die, its characterized in that, it includes a terrace die to go up the mould, the terrace die is equipped with a bellying, the outer convex surface of bellying is the cambered surface, the bed die includes a die, the die is in the bellying corresponds the position and is equipped with a depressed part, the bellying with the depressed part matches, die upper surface symmetry has set firmly two fixing device, fixing device is used for fixed sheet material.

2. The stamping die of claim 1, wherein the fixing device is a rectangular plate, a first through hole is formed in the middle of the rectangular plate, a second through hole is formed in the female die at a corresponding position, and a bolt sequentially penetrates through the first through hole and the second through hole to fix the fixing device on the female die.

3. The stamping die of claim 1, wherein the male die is provided with two notches at corresponding positions of the fixing device, and the size of the notches is larger than that of the fixing device.

4. The stamping die of claim 1, wherein the convex outer surface of the boss is a half-conical side.

5. The stamping die of claim 1, wherein the upper die further comprises an upper die base and a plurality of guide sleeves, the lower die further comprises a lower die base and a same number of guide posts as the guide sleeves, the guide sleeves and the male die are fixed on the upper die base, and the guide posts and the female die are fixed on the lower die base.

6. The stamping die of claim 5, wherein the guide post has a spring disposed around it, the spring having a height less than the height of the guide post.

7. The stamping die of claim 5, wherein a first shim plate is disposed between the punch and the upper die base, the first shim plate configured to cushion the impact of the punch on the upper die base.

8. The stamping die as recited in claim 5, wherein a flange portion is circumferentially arranged at a middle position of the guide sleeve, and the flange portion is attached to the bottom surface of the upper die holder.

9. The stamping die of claim 5, wherein a second backing plate is disposed between the female die and the lower die holder.

10. The stamping die of claim 5, wherein a die shank is fixedly arranged at the upper end of the upper die base.

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