CN109967613B

CN109967613B - Inside reinforcement mould for automobile rear longitudinal beam

Info

Publication number: CN109967613B
Application number: CN201711467245.5A
Authority: CN
Inventors: 丛培民
Original assignee: Shanghai Zhongda Auto Parts Co Ltd
Current assignee: Shanghai Zhongda Auto Parts Co Ltd
Priority date: 2017-12-28
Filing date: 2017-12-28
Publication date: 2024-04-09
Anticipated expiration: 2037-12-28
Also published as: CN109967613A

Abstract

The invention relates to a die for an inner reinforcing part of a rear longitudinal beam of an automobile, which comprises an upper die (1), a lower die (2) and a guide post (3), wherein two male dies (4) which are matched with the shape of the reinforcing part to be formed and are arranged in pairs are arranged on the upper die (1), and female dies (5) which are matched with the male dies (4) are arranged on the lower die (2). Compared with the prior art, the invention has the advantages of high efficiency, low cost and the like.

Description

Inside reinforcement mould for automobile rear longitudinal beam

Technical Field

The invention relates to a processing die for automobile parts, in particular to a die for an inner reinforcing part of an automobile rear longitudinal beam.

Background

In the front main structure of the vehicle body, the rear side member is one of the most important energy absorbing elements. In the rear collision process, collision kinetic energy is absorbed through plastic deformation of materials, and the energy absorption characteristic and the deformation mode directly determine the structural deformation of the rear part of the vehicle body in the rear collision process, so that the safety of a rear collision fuel system is influenced. The design of the rear longitudinal beam structure is required to be sequentially enlarged from back to front (the vehicle direction is from back to front), so that reasonable deformation sequence and good energy absorption effect in the collision process are ensured. The automobile longitudinal beam has great influence on the collision performance of the automobile body, so that the longitudinal beam is required to have good impact resistance and bending resistance.

The rear side member of an automobile generally has a structure including a body and a reinforcing member, wherein the reinforcing member is installed in the body, and is generally formed by stamping a low alloy steel plate during production or by performing multiple compression molding by using a mold.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the die for the inner reinforcing member of the automobile rear longitudinal beam, which is high in efficiency and low in cost.

The aim of the invention can be achieved by the following technical scheme: the die for the reinforcing part inside the automobile rear longitudinal beam comprises an upper die, a lower die and a guide post, and is characterized in that two male dies which are matched with the reinforcing part to be formed in shape and are arranged in pairs are arranged on the upper die, and female dies matched with the male dies are arranged on the lower die.

The upper die and the lower die are provided with male dies and female dies corresponding to four stations, the male dies and the female dies comprise a station a positioning flanging, a station b separating punching, a station c flanging, a station d trimming and shaping, and a cross-shaped tablet line is arranged at each station.

The male die a at the station a comprises two protruding parts a which are arranged in pairs and blank parts outside the protruding parts, wherein the crossed material sheet lines are positioned at the centers of the two protruding parts a, positioning holes are respectively formed in the upper and lower positions of the longitudinally arranged material sheet lines, and parting lines are arranged at the edges of the protruding parts a.

The male die b at the station b comprises two convex parts b which are arranged in pairs, a punching hole is respectively arranged at four corners of the convex parts b, the crossed material sheet line is positioned at the center of the two convex parts b, a dividing line is arranged beside the crossed material sheet line, and a waste edge is reserved at the periphery of the punching hole.

The male die c at the station c comprises two convex parts c which are arranged in pairs, and a flanging line is arranged on one side opposite to the two convex parts c.

The male die d at the station d comprises two convex parts d which are arranged in pairs, and trimming lines are arranged at four corners of the two convex parts d.

Compared with the prior art, the invention has the following advantages:

1. the original stamping die-like process mainly comprises a single-piece design die, the thought is changed, and after the process structure is optimized again, the original single-piece process is designed into a left-right die-closing mode, so that the occupancy of a production machine tool is saved, the difficulty of die debugging is reduced, the stability of die production is improved, the quality of part products is improved most importantly, the working efficiency is greatly improved, and the production cost is reduced.

2. The advantage of adopting the compound die design breaks through in the technology:

first, when generally designing the reinforcement product, adopt the single piece design mode generally, present improvement technical scheme, the design of piece merging mode about adopting, the benefit lies in that the part is bilateral symmetry about the first shaping, reinforcing mould structure's intensity, and both sides lateral force offset each other during production has improved the stability of production mould greatly.

Secondly, from product structural analysis, many stay point waste materials come out when station b blanking, neither influence the material utilization ratio of part, can dash and pre-punch a hole again, and the later process can adopt these four pre-punches a hole to carry out process spare location, has improved the stability of mould production like this greatly.

Thirdly, the waste materials which are left out in the previous working procedure can be increased in the flanging forming process at the station c, so that unstable product edges caused by the fact that the material cannot be pressed at the station c during flanging can be prevented, the situation is technically solved by reserving the waste materials, and the stability of the parts and the debugging difficulty of production dies are greatly improved; in addition, reserved waste is cut off at the station d of the next working procedure, so that the whole product is orderly molded on different stations of the same die, and two products can be obtained through one-step molding, and the efficiency and the product quality are high.

Drawings

FIG. 1 is a schematic view of a mold according to the present invention;

FIG. 2 is a schematic view of the structure of the male mold at station a in the mold of the present invention;

FIG. 3 is a schematic view of the structure of the male mold at station b of the inventive mold;

fig. 4 is a schematic structural view of a male die at station c in the die of the present invention;

FIG. 5 is a schematic view of the structure of the male mold at station d in the mold of the present invention;

fig. 6 is a schematic view of the structure of the formed reinforcement.

The figures are marked as follows: upper die 1, lower die 2, guide post 3, male die 4, female die 5, male die a41, male portion a411, blank portion 412, positioning hole 413, parting line 414, male die b42, male portion b421, punched hole 422, parting line 423, male die c43, male portion c431, flanging line 432, male die d44, male portion d441, trimming line 442

Detailed Description

The invention will now be described in detail with reference to the drawings and specific examples.

Example 1

As shown in fig. 1, the die for the inside reinforcement of the automobile rear longitudinal beam comprises an upper die 1, a lower die 2 and a guide post 3, wherein two male dies 4 which are matched with the shape of the reinforcement to be formed and are arranged in pairs are arranged on the upper die 1, and female dies 5 which are matched with the male dies 4 are arranged on the lower die 2.

As shown in fig. 2-5, the upper die 1 and the lower die 2 are provided with a male die 4 and a female die 5 corresponding to four stations, wherein the male die and the female die comprise a station a positioning flanging, a station b separating and punching, a station c flanging, a station d trimming and shaping, and each station is provided with a crisscross tablet line 6.

As shown in fig. 2, the male die a41 at the station a includes two protruding portions a411 arranged in pairs, and a blank portion 412 outside the protruding portions, the web line 6 having a crisscross shape is located at the center of the two protruding portions a411, a positioning hole 413 is respectively provided at the upper and lower positions of the web line 6 arranged longitudinally, and a parting line 414 is provided at the edge of the protruding portion a 411.

As shown in fig. 3, the male die b42 at the station b includes two protruding portions b421 arranged in pairs, a punched hole 422 is provided at each of four corners of the protruding portion b421, the crossed web line 6 is located at the center of the two protruding portions b421, a dividing line 423 is provided beside the crossed web line 6, and a scrap edge is reserved at the periphery of the punched hole 422.

As shown in fig. 4, the male die c43 at the station c includes two convex portions c431 provided in pairs, and a flanging line 432 is provided on the opposite side of the two convex portions c 431.

As shown in fig. 5, the male die d44 at the station d includes two convex portions d441 arranged in pairs, and trimming lines 442 are provided at four corners of the two convex portions d 441.

During punching operation, the blank is placed on the lower die material supporting plate of the station a, the blank is positioned through the positioning hole 413, flanging is carried out along the parting line 414, the first part forming process positioning flanging is completed after die assembly, then the first process part is placed at the station b, waste materials are expected at four corners and pre-punched, meanwhile, the blank is divided along the parting line 423, the second process separation punching is completed, then the workpiece is placed at the station c, flanging is completed along the flanging line 432, the third process flanging is completed, the workpiece is placed at the station d and trimmed along the trimming line 442, redundant waste materials are cut off, the finished part is taken out after die assembly forming is completed, and paired reinforcing parts are obtained as shown in fig. 6.

Claims

1. The die for the inner reinforcement of the automobile rear longitudinal beam comprises an upper die (1), a lower die (2) and a guide post (3), and is characterized in that two male dies (4) which are matched with the shape of the reinforcement to be formed and are arranged in pairs are arranged on the upper die (1), and female dies (5) which are matched with the male dies (4) are arranged on the lower die (2);

the upper die (1) and the lower die (2) are provided with male dies (4) and female dies (5) corresponding to four stations, the male dies comprise a station a positioning flanging, a station b separating punching, a station c flanging, a station d trimming and shaping, and each station is provided with a crisscross tablet line (6);

the male die a (41) at the station a comprises two convex parts a (411) which are arranged in pairs and blank parts (412) outside the convex parts, the crossed tablet lines (6) are positioned at the centers of the two convex parts a (411), positioning holes (413) are respectively formed in the upper and lower positions of the tablet lines (6) which are longitudinally arranged, and parting lines (414) are formed at the edges of the convex parts a (411);

the male die b (42) at the station b comprises two convex parts b (421) which are arranged in pairs, each of four corners of the convex parts b (421) is provided with a punching hole (422), the crossed material sheet line (6) is positioned at the center of the two convex parts b (421), a parting line (423) is arranged beside the crossed material sheet line (6), and the periphery of the punching hole (422) is reserved with a waste edge;

the male die c (43) at the station c comprises two convex parts c (431) which are arranged in pairs, and a flanging line (432) is arranged on one side opposite to the two convex parts c (431);

the male die d (44) at the station d comprises two convex parts d (441) which are arranged in pairs, and trimming lines (442) are arranged at four corners of the two convex parts d (441).