CN114888181B

CN114888181B - Integral die with flanging and pier thickness

Info

Publication number: CN114888181B
Application number: CN202210820634.6A
Authority: CN
Inventors: 张燕
Original assignee: Suzhou Chunqiu Electronic Technology Co ltd
Current assignee: Hefei Jingwei Electronic Technology Co ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2022-09-30
Anticipated expiration: 2042-07-13
Also published as: CN114888181A

Abstract

The invention belongs to the technical field of metal stamping, and relates to a flanging and upsetting integrated die which comprises a male die and a female die, wherein the male die comprises a large-face supporting plate and a stripper plate which can independently float, the female die comprises a large-face pressing plate positioned above the large-face supporting plate and a side pushing block positioned on the side of the large-face pressing plate and used for downwards overturning the edge of a plate to the side of the large-face supporting plate, the stripper plate surrounds the large-face supporting plate, a upsetting block attached to the side edge of the large-face supporting plate is arranged on the stripper plate, an inclined wedge block is arranged on the female die in a floating mode, the side pushing block is connected to the inclined wedge block in a sliding mode, and a jacking piece used for jacking the inclined wedge block to drive the side pushing block to move far away from the large-face pressing plate is arranged on the male die. According to the invention, two steps are completed in one-step processing by adopting one set of die, so that the thinning processing of CNC is omitted, the production efficiency is accelerated, the manufacturing cost is saved, a large amount of waste materials caused by the thinning processing are avoided, and the processing yield is high.

Description

Integral mould with flanging and upsetting functions

Technical Field

The invention relates to the technical field of metal stamping, in particular to a flanging and upsetting integrated die.

Background

With the competitive development of the mold industry in China, the mold consumption of the general technical level in China is relatively saturated. The requirement of the die product with higher technical content still has larger market space, which determines that the die industry in China still needs to do great work in the aspect of high precision so as to break through the current technical bottleneck. In recent years, 3C products such as notebook computers have been taken as a representative, and in order to meet the existing 5G technology and the aesthetic sense of people, the products have to be improved in performance and broken through in appearance. When an enterprise faces a transformation period, new technology is required to be introduced to continuously break through the difficulty of a mold so as to meet the requirement that a new process of a new product cannot become possible, and the core competitiveness of the enterprise is improved.

The company has a backboard product, the thickness of the large surface of the product structure is 1.2mm, the thickness of the side wall is 1.4mm, and the outer side of the product turning edge is a sharp corner. The old processing method needs to turn over the raw material with the thickness of 1.6mm to form the side wall, then the whole large surface of the product is cut by 0.4mm by CNC (numerical control machine) processing, and the CNC cutting of the side wall is 0.2 mm. Because the raw material needs thicker plate, the cost is high, and the processing generates more waste. CNC cutting not only takes a long time, but also costs a tool, has high manufacturing cost, and may have a bulge problem on a large surface of a processed plate, and the product yield is low.

Chinese patent CN206779285U discloses a flanging thickening corner flattening die with a flanging backboard, which is used for extruding the flanging of the existing backboard into a right angle from a round angle by utilizing an upper supporting plate, an upper forming punch, a lower forming insert and a lower die holder. However, the back plate is required to have a flanging structure, so that the required side wall thickening structure can be formed by using two sets of dies.

Therefore, it is necessary to develop a new mold to complete the flanging and upsetting processes at one time.

Disclosure of Invention

The invention mainly aims to provide a flanging and upsetting integrated die which can finish two steps of flanging a thin plate and upsetting a side wall at one time, quicken the production efficiency, save the manufacturing cost, avoid a large amount of waste materials caused by thinning processing and have high processing yield.

The invention realizes the purpose through the following technical scheme: the utility model provides a thick integral type mould of turn-ups mound, includes public mould and master model, public mould is including the big face layer board that can float independently and take off the flitch, the master model is including being located big face clamp plate of big face layer board top and being located big face clamp plate side just is used for turning over down the edge of panel the side kicking block of big face layer board side, it surrounds to take off the flitch big face layer board, it hugs closely to be equipped with on the flitch to take off the mound crowding piece of big face layer board side, the master model come up to move and is provided with the tapered wedge, side kicking block sliding connection in the tapered wedge, be equipped with one on the public mould and be used for the jacking the tapered wedge is in order to drive the side kicking block is toward keeping away from the jacking piece of big face clamp plate one side motion.

Specifically, the lower edge of the side push block close to the large-area pressing plate is in a round angle shape.

Specifically, the pier extrusion block is divided into a lower part and an upper part, and the sectional area of the lower part is larger than that of the upper part.

Furthermore, the lower part and the upper part are transited through an arc surface, and the arc surface avoids the lower edge structure of the side push block.

Furthermore, a boss is arranged on the outer side of the lower portion of the upsetting block, the upsetting block is limited on the stripper plate by a fixing block for clamping the boss, and the top surface of the fixing block is not in contact with the bottom surface of the side pushing block when the die is completely closed.

The technical scheme of the invention has the beneficial effects that:

the die closing process of the die is divided into two strokes, a first stroke plate is positioned on the large-face supporting plate, the side pushing block is utilized to complete flanging to form the side wall, then the large-face pressing plate completely compresses the plate, the second stroke utilizes the jacking piece to push the inclined wedge block and then drives the side pushing block to laterally move out of a pier thickness space, and then the side wall is squeezed to be flattened and thickened by the pier squeezing block to form a structure with the large-face thin side wall thickness. Above process adopts one set of mould to accomplish two steps in a processing, has removed CNC's attenuate processing from, has not only accelerated production efficiency, has saved manufacturing cost, has avoided a large amount of waste materials that attenuate processing brought, and the processing yield is high.

Drawings

FIG. 1 is a schematic structural diagram of a flanging and upsetting integrated die according to an embodiment;

FIG. 2 is a partially enlarged view of the position A in FIG. 1 when the mold is opened;

FIG. 3 is an enlarged view of a portion of FIG. 1 at the end of the flanging stroke at position A;

fig. 4 is an enlarged view of a portion of fig. 1 at the end of the completed pier stroke at position a.

The figures in the drawings represent:

1-male die, 11-large face supporting plate, 12-stripper plate, 13-pier extrusion block, 131-upper part, 132-lower part, 133-boss, 134-cambered surface, 14-fixed block and 15-jacking piece;

2-a female die, 21-a large-surface pressing plate, 22-a side pushing block and 23-an inclined wedge block;

3-plate, 31-large surface and 32-side wall.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

The embodiment is as follows:

as shown in fig. 1 to 4, the flanging and upsetting integrated die comprises a male die 1 and a female die 2, wherein the male die 1 comprises a large-surface supporting plate 11 and a stripper plate 12 which can float independently, the female die 2 comprises a large-surface pressing plate 21 which is positioned above the large-surface supporting plate 11 and a side push block 22 which is positioned on the side of the large-surface pressing plate 21 and used for overturning the edge of a plate 3 to the side of the large-surface supporting plate 11, the stripper plate 12 surrounds the large-surface supporting plate 11, a upsetting block 13 which is tightly attached to the side of the large-surface supporting plate 11 is arranged on the stripper plate 12, an inclined wedge block 23 is movably arranged on the female die 2, the side push block 22 is slidably connected to the inclined wedge block 23, and a jacking member 15 which is used for jacking the inclined wedge block 23 to drive the side push block 22 to move far away from the large-surface pressing plate 21 is arranged on the male die 1. The side push block 22 can only move horizontally, the inclined wedge block 23 is connected to the female die 2 in a floating mode through the elastic mechanism, when the side push block 22 tends to be close to the large-face pressing plate 21 due to the inclined wedge block 23 when the side push block is not stressed, and in the embodiment, the vertical edge of the side push block 22 and the edge of the large-face supporting plate 11 have a 1.2mm spacing distance when the die is opened, and the side push block 22 is used for containing the edge after being turned over. The mold closing process of the mold is divided into two strokes: the first stroke is a flanging stroke and the second stroke is a upsetting stroke. The first-stroke plate 3 is positioned between the male die 1 and the female die 2, the lower surface of the plate 3 is positioned on the floating large-surface supporting plate 11, then the side push block 22 contacts the edge of the plate 3, the plate is turned downwards to the side of the large-surface supporting plate 11 to form a side wall 32, and the part, which is not bent, in the middle of the plate 3 is a large surface 31. At the end of the first stroke, the large face press plate 21 presses the upper surface of the large face 31 as a support above the cavity during upsetting. In the second stroke, the jacking piece 15 starts to contact the inclined wedge 23, the inclined wedge 23 can drive the side push block 22 to move away from the outer side of the large-surface pressing plate 21 when being jacked, and in the embodiment, when die assembly is completed, the distance between the side push block 22 and the large-surface supporting plate 11 can be gradually increased to 1.4 mm; meanwhile, the upper end of the pier extrusion block 13 is in contact with the lowest point of the side wall 32, the stripper plate 12 descends to the lowest point under the action of the reaction force of the side wall 32, then the position of the pier extrusion block 13 is fixed, the top end of the pier extrusion block 13 is continuously clamped to extrude the side wall 32 to be flat, and because a larger distance is reserved between the side push block 22 and the large face supporting plate 11, the material can only transversely flow and thicken, and finally, a structure that the large face 31 is thin (1.2 mm) and the side wall 32 is thick (1.4 mm) is formed, and the turning position of the side wall 32 is originally a round angle and finally can also become a sharp angle. Above process adopts one set of mould to accomplish two steps in a compound die, has removed CNC's attenuate processing from, has not only accelerated production efficiency, has saved manufacturing cost, has avoided a large amount of waste materials that attenuate processing brought, and the processing yield is high. The edges of the large surface supporting plate 11 and the large surface pressing plate 21 can have a few radians according to the shape design requirement of the large surface 31.

As shown in fig. 3 and 4, the lower edge of the side push block 22 near the large-area pressing plate 21 is rounded. The fillet can avoid the side thrust block 22 to produce darker indents in the side wall 32 outer wall at the turn-ups in-process, has promoted product appearance quality, has avoided the aftertreatment troublesome.

As shown in fig. 2, the pier block 13 is divided into a lower portion 132 and an upper portion 131, and the cross-sectional area of the lower portion 132 is larger than that of the upper portion 131. Thus, the lower portion 132 of the pier block 13 has a high structural strength to avoid breaking under excessive force during pier extrusion.

As shown in fig. 2, the lower portion 132 and the upper portion 131 transition through an arc 134, and the arc 134 avoids the lower edge structure of the side push block 22. The cambered surface 134 provides a smooth transition between the lower portion 132 and the upper portion 131 of the pier extrusion block 13, improving structural strength. Since the lower edge of the side thrust block 22 is a surface for burring, this can also avoid the machined surface from being damaged by impact.

As shown in fig. 2, the lower portion 132 of the block 13 has a boss 133 on its outer side, the block 13 is retained on the stripper plate 12 by a fixing block 14 that catches the boss 133, and the top surface of the fixing block 14 is not in contact with the bottom surface of the side push block 22 when the mold is completely closed. The side of the upsetting block 13 facing the large face plate 11 is surrounded laterally by the fixing block 14. The fixing block 14 limits the height of the pier extrusion block 13 by using the boss 133 on one hand, and horizontally limits the pier extrusion block 13 on the other hand, so that the pier extrusion block 13 can keep moving with the stripper plate 12. If the pier extrusion block 13 needs to be scrapped, the fixing block 14 can be detached and replaced.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a turn-ups mound thick integral type mould, includes public mould (1) and master model (2), public mould (1) is including big face layer board (11) that can float independently and take off flitch (12), master model (2) are including being located big face clamp plate (21) of big face layer board (11) top and being located big face clamp plate (21) side just is used for turning over the edge of panel (3) down side ejector pad (22) of big face layer board (11) side, it surrounds to take off flitch (12) big face layer board (11), its characterized in that: the stripper plate (12) is provided with a pier extrusion block (13) tightly attached to the side edge of the large-surface supporting plate (11), the female die (2) floats upwards to be provided with a wedge block (23), the side push block (22) is connected to the wedge block (23) in a sliding manner, and the male die (1) is provided with a jacking piece (15) used for jacking the wedge block (23) so as to drive the side push block (22) to move away from one side of the large-surface pressing plate (21).

2. The flanging and upsetting integrated die of claim 1, wherein: the lower edge of the side push block (22) close to the large-surface pressing plate (21) is in a round angle shape.

3. The flanging and upsetting integrated die of claim 1, characterized in that: the pier extrusion block (13) is divided into a lower part (132) and an upper part (131), and the cross-sectional area of the lower part (132) is larger than that of the upper part (131).

4. The flanging and upsetting integrated die as claimed in claim 3, wherein: the lower portion (132) and the upper portion (131) are transited through an arc surface (134), and the arc surface (134) avoids the lower edge structure of the side push block (22).

5. The flanging and upsetting integrated die as claimed in claim 3, wherein: the outer side of the lower part (132) of the upsetting block (13) is provided with a boss (133), the upsetting block (13) is limited on the stripper plate (12) by a fixing block (14) for clamping the boss (133), and the top surface of the fixing block (14) is not contacted with the bottom surface of the side pushing block (22) when the die is completely closed.