CN219211320U

CN219211320U - Stamping die

Info

Publication number: CN219211320U
Application number: CN202223436912.2U
Authority: CN
Inventors: 沈海波; 周杰
Original assignee: Foshan Shunde Scien Tech Industrial Co ltd
Current assignee: Foshan Shunde Scien Tech Industrial Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-06-20
Anticipated expiration: 2032-12-21

Abstract

The utility model discloses a stamping die, which relates to the technical field of tail pipe processing and comprises a punch with radian, a positioning groove with a concave position and a lower die plate with a concave arc forming die cavity, wherein the punch with radian is matched with the radian and the diameter of the lower die plate with the concave arc forming die cavity correspondingly, and the punch is sleeved in the positioning groove and the lower die plate sequentially through stamping. The punch with radian is arranged on an upper die, the positioning groove with the concave position is arranged on the pressing mechanism, and the lower die plate with the concave arc-shaped die cavity is arranged on the lower die. The punch is sleeved into the positioning groove and the lower die plate sequentially through stamping, and the metal sheet matched with the positioning groove of the positioning plate is placed in the positioning groove, so that the metal sheet is integrally formed after stamping is finished, and the prefabricated member is formed through one-step stamping, so that the stamping process and equipment are simplified, and meanwhile, the product quality is optimized.

Description

Stamping die

Technical Field

The utility model relates to the technical field of tail pipe machining, in particular to a tail pipe prefabricated part stamping die.

Background

The tail pipe is an important component part of an automobile exhaust system, has the characteristics of large diameter, small thickness, asymmetric bending and the like, and has high requirements on forming and assembling precision in terms of service performance. The tail pipe is mainly manufactured by adopting a multi-stamping and multi-welding multi-process method, redundant materials at the edge are required to be cut off after stamping in the processing process, meanwhile, plates with special regular shapes are subjected to stamping forming for multiple times through a die and then welding is performed, and finally, the quality of the tail pipe meets the production requirement through a shaping process.

In addition, during the processing and in the above steps, common defects of press forming such as wrinkling and cracking also have adverse effects on the forming quality of the tail pipe, and in order to solve the above problems, we propose a single press forming tail pipe preform press die.

Disclosure of Invention

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the stamping die is characterized by comprising a punch with radian, a positioning groove with a concave position and a lower die plate with a die cavity formed by a concave arc, wherein the punch with radian is matched with the radian and the diameter of the lower die plate with the die cavity formed by the concave arc correspondingly, and the punch is sleeved in the positioning groove and the lower die plate sequentially through stamping.

The punch with radian is arranged on an upper die, the positioning groove with the concave position is arranged on the pressing mechanism, and the lower die plate with the concave arc-shaped die cavity is arranged on the lower die.

The upper die comprises an upper supporting plate, an upper die holder and a punch, the material pressing mechanism comprises a material pressing plate and a first guide pillar, and the lower die comprises a lower die holder, a lower die frame, a positioning plate and a lower die plate;

the die comprises a die holder, a punch, a positioning plate, a punch and a punch, wherein the die holder is fixed on the die holder, the positioning plate is arranged on the die holder, the positioning plate is provided with a positioning groove, the punch is connected with the die holder in a sliding mode through a first guide pillar, the punch is arranged on the bottom end face of the die holder, the punch is connected with the punch in a sliding mode through a notch in a sleeving mode, the die holder is connected with the die holder through a sliding block and a second guide pillar in a sliding mode, and the punch is arranged between the die holder and the die holder.

Preferably, the bottom four corners of the upper die holder and the top end of the lower die holder are correspondingly provided with second limiting columns, and the bottom end surface of the upper die holder is provided with first limiting columns at the position of the pressing plate.

Preferably, fork modules for mounting and fixing are arranged at two ends of the lower die holder.

Preferably, the two groups of sliding blocks are symmetrical in position relative to the punch and fixedly connected with the upper die holder, and the two groups of second guide posts are fixedly connected with the lower die holder.

Preferably, a backing plate is arranged between the sliding block and the upper die holder, and the second guide post penetrates through the sliding block, the backing plate and the upper die holder.

Preferably, the bottom ends of the first guide posts are fixedly connected with the pressing plate through second pressing blocks, the first guide posts are in sliding connection with the upper die holder, and a plurality of groups of travel limit screws are further arranged between the pressing plate and the upper die holder.

Preferably, the bottom end surface of the upper die holder is matched with the first guide post and the second pressing block to form a guide groove.

Preferably, the lower die frame is sleeved with the lower die plate, the lower die plate is inwards concave to form a die cavity, the punch is matched and inserted with the die cavity, a blank is arranged in the die cavity, the size of the blank is adjusted by 0-1.5mm, the blank is unfolded to be of a convex structure, and the blank is of a U-shaped structure after being punched.

Preferably, a first upper foot pad and a second upper foot pad are arranged between the bottom end surface of the upper supporting plate and the upper die holder.

Preferably, a guide ring is sleeved in the guide groove, and a first pressing block is arranged in the guide groove to press the edge of the guide ring.

The beneficial effects of the utility model are as follows:

1. the punch is sleeved into the positioning groove and the lower die plate sequentially through stamping, and the metal sheet matched with the positioning groove of the positioning plate is placed in the positioning groove, so that the metal sheet is integrally formed after stamping is finished, and the prefabricated member is formed through one-step stamping, so that the stamping process and equipment are simplified, and meanwhile, the product quality is optimized.

2. The device increases a set of swager between last mould and bed die, cooperates with locating plate constant head tank, and swager can be earlier in the upper die base, drift contact the locating plate during punching press for when follow-up drift contact stock extrudees to the die cavity, restrict the stock in the constant head tank through the swager, the mobility of material has obtained the constraint, avoids stock edge perk and fold, thereby acquires the standard and qualified tail pipe prefab of shape. The locating groove of the locating plate is not only a forming part, but also plays a role in fixing and locating.

Drawings

Fig. 1 is a schematic structural view of a lower mold according to the present utility model.

Fig. 2 is a schematic structural view of an upper mold of the present utility model.

Fig. 3 is a schematic structural diagram of a pressing mechanism of the present utility model.

Fig. 4 is a schematic view of the position distribution of the lower die plate, blank and punch according to the present utility model.

FIG. 5 is a schematic view showing the development structure of the blank of the present utility model.

Reference numerals in the drawings: 1. an upper supporting plate; 2. a first upper foot pad; 3. a second upper foot pad; 4. an upper die holder; 5. a first limit post; 6. a first briquette; 7. a backing plate; 8. a punch; 9. a slide block; 10. a guide groove; 11. a pressing plate; 12. a notch; 13. a first guide post; 14. a second briquetting; 15. a positioning plate; 16. a lower template; 17. a travel limit screw; 18. a second guide post; 19. a lower die frame; 20. the second limit column; 22. a fork module; 23. a lower die holder; 24. and (5) blank material.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-5, a prefabricated part stamping die for the tail pipe comprises a punch 8 with radian, a positioning groove with a concave position and a lower die plate 16 with a concave arc forming die cavity, wherein the punch 8 with radian is matched with the radian and the diameter of the lower die plate 16 with the concave arc forming die cavity correspondingly, and the punch 8 is sleeved in the positioning groove and the lower die plate 16 in sequence through stamping.

The punch 8 with radian is arranged on an upper die, the positioning groove with concave position is arranged on the pressing mechanism, and the lower die plate 16 with the concave arc-shaped die cavity is arranged on the lower die.

The upper die comprises an upper supporting plate 1, an upper die holder 4 and a punch 8, the material pressing mechanism comprises a material pressing plate 11 and a first guide post 13, the lower die comprises a lower die holder 23, a lower die frame 19, a positioning plate 15 and a lower die plate 16, the lower die frame 19 is fixed at the top end of the lower die holder 23, the lower die frame 19 is sleeved with the lower die plate 16, the lower die plate 16 is inwards concave to form a die cavity, the punch 8 is matched and inserted with the die cavity, the positioning plate 15 is arranged at the top end of the lower die frame 19, the positioning plate 15 is provided with a positioning groove, the material pressing plate 11 is slidably connected with the upper die holder 4 through the first guide post 13, the punch 8 is arranged at the bottom end surface of the upper die holder 4, the material pressing plate 11 is slidably sleeved with the punch 8 through a notch 12, the upper die holder 4 is slidably connected with the lower die holder 23 through a sliding block 9 and a second guide post 18, the material pressing plate 11 is positioned between the upper die holder 4 and the lower die holder 23, and two ends of the lower die holder 23 are respectively provided with a fork module 22 for mounting and fixing.

Referring to fig. 1 and 2, second limiting columns 20 are correspondingly arranged at the four corners of the bottom end of the upper die holder 4 and the top end of the lower die holder 23, a first limiting column 5 is arranged at the position of the bottom end surface of the upper die holder 4, which is located at the pressing plate 11, and is used for limiting the action limit between the upper die holder 4 and the lower die holder 23 and between the upper die holder 4 and the pressing plate 11 during punching, two groups of sliding blocks 9 are symmetrical in position about the punch 8 and fixedly connected with the upper die holder 4, two groups of second guide columns 18 are fixedly connected with the lower die holder 23, a base plate 7 is arranged between the sliding blocks 9 and the upper die holder 4, the second guide columns 18 penetrate through the sliding blocks 9, the base plate 7 and the upper die holder 4 and are used for guiding the movement direction between the upper die holder 4 and the lower die holder 23, and errors are avoided in the die assembly position.

Referring to fig. 3 and 2, the bottom ends of the plurality of groups of first guide posts 13 are fixedly connected with the pressing plate 11 through second pressing blocks 14, the first guide posts 13 are in sliding connection with the upper die holder 4, a plurality of groups of travel limit screws 17 are further arranged between the pressing plate 11 and the upper die holder 4, the bottom end surface of the upper die holder 4 is matched with the first guide posts 13, the second pressing blocks 14 are provided with guide grooves 10, guide rings are sleeved in the guide grooves 10, the first pressing blocks 6 are arranged in the guide grooves 10 to compress the edges of the guide rings and are used for guiding the movement direction between the pressing plate 11 and the upper die holder 4, and a first upper pad foot 2 and a second upper pad foot 3 are arranged between the bottom end surface of the upper die holder 1 and the upper die holder 4 and are used for reserving a second guide post 18, the first guide posts 13 and travel limit screws 17 between the upper die holder 4 and the upper die holder 1.

As shown in fig. 4 and 5, the size of the blank 24 is adjusted to 0-1.5mm, specifically to 1.2mm, the blank 24 is unfolded to be in a convex structure, and after stamping, the lower die plate 16 of the device is in a U-shaped structure, the top surface profile of the device is obtained by unfolding the tail pipe stamping finished product into a plane, the blank 24 with the specific profile is stamped in the matched shape for standby by a stamping machine, the blank 24 with the specific profile is placed at the top end of the lower die plate 16, under the space limitation of the positioning groove of the positioning plate 15 and the pressing plate 11, when the blank 24 is pressed into the lower die plate 16 with the specific concave shape by the stamping head 8, the blank 24 can only be stretched and slid in the positioning groove of the positioning plate 15, the edge warping and wrinkling of the blank 24 are avoided, the flowability of the material is restrained, and thus the tail pipe exhaust prefabricated member with standard and qualified shape is obtained.

Working principle: a group of material pressing mechanisms are added between the upper die and the lower die, metal sheets matched with the positioning grooves of the positioning plates 15 are placed in the positioning grooves, when the upper die holder 4 presses downwards, the material pressing mechanisms contact the positioning plates 15 before the upper die holder 4 and the punch 8, so that when the subsequent punch 8 contacts the blank 24 to press inwards, the blank 24 is limited to extend and slide in the positioning grooves of the positioning plates 15 through the material pressing plates 11, the edge warping and wrinkling of the blank 24 are avoided, the flowability of materials is restrained, and therefore, the exhaust tail pipe prefabricated member with standard and qualified shape is obtained.

When the novel exhaust tail pipe prefabricated member is used, the upper die, the material pressing mechanism and the lower die are adopted for matched stamping, the punch 8 with radian, the positioning groove with concave position and the lower die plate 16 with concave arc forming die cavity which are matched with each other are respectively arranged on the upper die, the material pressing mechanism and the lower die, the metal sheet is designed into a foil-shaped metal sheet, the foil-shaped metal sheet is placed in the positioning groove and is stamped towards the positioning groove and the lower die plate through the punch 8, so that the foil-shaped metal sheet is molded in the positioning groove with concave position and the lower die plate 16 with concave forming die cavity, and an unsealed exhaust tail pipe prefabricated member with radian is formed; and then welding the gap opening of the prefabricated member by adopting a welding mode.

The foil sheet with wing shape is formed in the lower template with concave positioning groove and concave forming die cavity to form the unsealed tail pipe prefabricated member with radian, and is formed in the positioning groove and lower template to form the upper and lower double concave grooves, so that the forming effect is good and the forming is easy.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The stamping die is characterized by comprising a punch (8) with radian, a positioning groove with a concave position and a lower die plate (16) with a die cavity formed by a concave arc, wherein the punch (8) with radian corresponds to the radian and the diameter of the lower die plate (16) with the die cavity formed by the concave arc, and the punch (8) is sleeved in the positioning groove and the lower die plate (16) in sequence through stamping.

2. The stamping die according to claim 1, wherein the punch (8) with radian is arranged on an upper die, the positioning groove with concave position is arranged on the pressing mechanism, and the lower die plate (16) with concave arc forming die cavity is arranged on the lower die.

3. The stamping die according to claim 2, wherein the upper die further comprises an upper supporting plate (1) and an upper die holder (4), and the lower die comprises a lower die holder (23), a lower die frame (19) and a positioning plate (15).

4. A stamping die according to claim 3, characterized in that the press mechanism further comprises a press plate (11) and a first guide post (13).

5. The stamping die according to claim 4, wherein the lower die frame (19) is fixed at the top end of the lower die holder (23), the positioning plate (15) is disposed at the top end of the lower die frame (19), and the positioning plate (15) is provided with a positioning groove.

6. The stamping die according to claim 5, wherein the pressing plate (11) is slidably connected with the upper die holder (4) through a first guide post (13), the punch (8) is arranged on the bottom end surface of the upper die holder (4), the pressing plate (11) is slidably sleeved with the punch (8) through a notch (12), the upper die holder (4) is slidably connected with the lower die holder (23) through a sliding block (9) and a second guide post (18), and the pressing plate (11) is located between the upper die holder (4) and the lower die holder (23).

7. A stamping die according to claim 6, characterized in that two sets of said slide blocks (9) are positioned symmetrically with respect to the punch (8) and are fixedly connected to the upper die holder (4), and two sets of said second guide posts (18) are fixedly connected to the lower die holder (23).

8. Stamping die according to claim 7, characterized in that a backing plate (7) is arranged between the slide (9) and the upper die holder (4), and the second guide post (18) penetrates the slide (9), the backing plate (7) and the upper die holder (4).

9. The stamping die according to claim 8, wherein a plurality of groups of first guide posts (13) are fixedly connected with the pressing plate (11) through second pressing blocks (14), the first guide posts (13) are in sliding connection with the upper die holder (4), and a plurality of groups of travel limit screws (17) are further arranged between the pressing plate (11) and the upper die holder (4).

10. The stamping die according to claim 9, wherein the lower die frame (19) is sleeved with the lower die plate (16), the lower die plate (16) is concavely formed into a die cavity, the punch (8) is matched and inserted with the die cavity, a blank (24) is arranged in the die cavity, the size of the blank (24) is adjusted by 0-1.5mm, the blank (24) is unfolded to be of a convex structure, and the die is of a U-shaped structure after stamping.