CN114226541A

CN114226541A - Blanking and forming process for latch part

Info

Publication number: CN114226541A
Application number: CN202111549778.4A
Authority: CN
Inventors: 樊景明
Original assignee: Chongqing Lan Lin Teaching Equipment Co ltd
Current assignee: Chongqing Lan Lin Teaching Equipment Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-25

Abstract

The invention discloses a blanking forming process of a latch part, wherein the latch part comprises a welding part in a right-angle shape and a clamping part extending downwards from the edge of the inner end of the welding part, and the forming process comprises the following steps: the method comprises the following steps: firstly, cutting a blank plate, wherein the blank plate is provided with spread materials of at least two clamping tongue parts; step two: and taking the center of the lower side of the blank plate as a positioning support surface, and blanking at least two clamping tongue parts by a die punch at one time, wherein the clamping tongue parts are uniformly distributed in the circumferential direction of the blank plate. The invention has the beneficial effects that: a plurality of clamping tongue parts are synchronously formed on the same blank plate, so that the technical problem that a single clamping tongue part cannot be positioned during forming is solved.

Description

Blanking and forming process for latch part

Technical Field

The invention belongs to the technical field of stamping and forming of sheet metal parts, and particularly relates to a blanking and forming process of a tongue clamping part.

Background

The press forming is a processing and forming method for obtaining a workpiece with a required shape and size by applying an external force to a plate, a strip, a pipe, a section bar and the like by a press machine and a die to cause plastic deformation or separation.

Whether the blank can be well positioned in the die or not plays an extremely important role in ensuring the product yield of the stamping part and the stamping efficiency of the die.

At present, there is a chinese utility model patent document with publication number "CN 209892580U", which discloses a hidden fast clamping structure, which can ensure seamless connection of corresponding section bars of apartment bed and better appearance quality. A part named as a clamping tongue is involved in a connecting structure of the part, and when the part is manufactured by adopting a stamping process, because the deformation contour line of the clamping tongue is of an asymmetric structure and does not have a positioning supporting surface, good positioning is difficult to obtain in a die, and the stamping manufacturing difficulty is very high. The parts are produced by other processes, and the problems of high manufacturing cost, poor economy and the like exist.

Disclosure of Invention

In view of this, the invention provides a blanking forming process for a latch part, which solves the technical problem of difficult positioning of the latch pointed out in the background art.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a latch part blanking forming process, the latch part includes the joint portion of right angle shape welding part and the joint portion of edge downwardly extending in the welding part, and its forming process lies in:

the method comprises the following steps: firstly, cutting a blank plate, wherein the blank plate is provided with spread materials of at least two clamping tongue parts;

step two: and taking the center of the lower side of the blank plate as a positioning support surface, and blanking at least two clamping tongue parts by a die punch at one time, wherein the clamping tongue parts are uniformly distributed in the circumferential direction of the blank plate.

By adopting the forming process, a plurality of latch parts are synchronously formed on the blank plate, the technical problem that the single forming cannot be positioned is solved, and the technical advantages of high production efficiency and high blanking forming quality are obtained.

Preferably, the method comprises the following steps: and punching and forming four clamping tongue components on the blank plate at one time. By adopting the structure, the production and manufacturing efficiency is high, and the material utilization rate is high.

Preferably, the method comprises the following steps: after the clamping tongue component is blanked and formed, the lower end edge of the clamping part is the circumferential edge of the blank plate before blanking.

Preferably, the method comprises the following steps: the welding part is provided with two perpendicular edges, and the die punch is provided with a shearing edge corresponding to the edges.

Compared with the prior art, the invention has the beneficial effects that:

1. a plurality of clamping tongue parts are synchronously formed on the same blank plate, so that the technical problem that a single clamping tongue part cannot be positioned during forming is solved.

2. The method has the advantages of high production efficiency, uniform blanking stress distribution, good forming quality, high material utilization rate and the like.

Drawings

FIG. 1 is a schematic view of a latch member;

FIG. 2 is a schematic structural diagram of a blank plate;

fig. 3 is a schematic structural diagram of the blank plate after being blanked by the punch.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

As shown in FIG. 1, a latch member 4, the latch member 4 includes a welding portion 4a having a right angle shape and a latch portion 4b extending downward from an inner end edge of the welding portion 4a, and the welding portion 4a has two perpendicular right-angle sides a.

As further shown in fig. 2 and 3, the blanking process of the latch member 4 includes:

the method comprises the following steps: firstly, cutting a blank plate 1, wherein the blank plate 1 is provided with spread materials of at least two clamping tongue parts 4;

step two: the center of the lower side of the blank plate 1 is used as a positioning support surface, a die punch performs one-step blanking to form at least two tongue clamping parts 4, and the tongue clamping parts 4 are uniformly distributed in the circumferential direction of the blank plate 1.

According to the mode, the clamping tongue parts 4 are formed in a blanking mode at one time, the right-angle sides a of the clamping tongue parts 4 are located on the same plane, and a positioning supporting surface can be formed, so that the blank plate 1 can be positioned and supported in a die. The clamping tongue components 4 are uniformly distributed in the circumferential direction of the blank plate 1, so that the uniform stress distribution in the punching process of the punch can be ensured, and the forming quality of a product is better.

Referring to fig. 3, in the blanking process provided in this embodiment, four tongue-engaging members 4 are blanked and formed on the blank plate 1 at one time, and after the four tongue-engaging members 4 are blanked and formed, the lower end edge of the engaging portion 4b is the circumferential edge of the blank plate 1 before blanking. In the blanking process, only the die punch is required to be ensured to have the shearing edge corresponding to the right-angle edge a, and the punch structure is easy to design and manufacture.

In the process, the blank plate 1 and the four latch parts 4 can be cut in the same die at one time, and can also be cut in sequence by different dies.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. A blanking forming process of a latch part (4), wherein the latch part (4) comprises a welding part (4a) in a right-angle shape and a clamping part (4b) extending downwards from the inner end edge of the welding part (4a), and the forming process comprises the following steps:

the method comprises the following steps: firstly, cutting a blank plate (1), wherein the blank plate (1) is provided with spread materials of at least two clamping tongue parts (4);

step two: and taking the center of the lower side of the blank plate (1) as a positioning support surface, blanking and forming at least two clamping tongue parts (4) by a die punch at one time, wherein the clamping tongue parts (4) are uniformly distributed in the circumferential direction of the blank plate (1).

2. The latch component blanking process of claim 1, wherein: and four clamping tongue parts (4) are formed on the blank plate (1) in a one-time blanking mode.

3. The latch component blanking process of claim 1, wherein: after the clamping tongue component (4) is blanked and formed, the lower end edge of the clamping part (4b) is the circumferential edge of the blank plate (1) before blanking.

4. The latch component blanking process of claim 1, wherein: the welding part (4a) is provided with two mutually perpendicular square edges (a), and the die punch is provided with a shearing edge corresponding to the square edges (a).

5. The latch component blanking process of claim 1, wherein: and the first step and the second step are completed by one-time blanking in the same die.