CN212442849U

CN212442849U - Anti-rebound bending die

Info

Publication number: CN212442849U
Application number: CN201922484542.1U
Authority: CN
Inventors: 李丹丹; 王冬; 王书敏
Original assignee: Jiangsu Sinma Machinery Co ltd
Current assignee: Jiangsu Sinma Machinery Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-02-02
Anticipated expiration: 2029-12-30

Abstract

The utility model belongs to the mould field discloses an anti-rebound bending mould, including last mould (1) and lower mould, the lower mould constitute by die body (2-1), fixed axle (2-2), left lower mould of reversal formula (2-3) and right lower mould of reversal formula (2-4) set up on die body (2-1) relatively, and all wear to establish on fixed axle (2-2), the one side that is relative of left lower mould of reversal formula (2-3) and right lower mould of reversal formula (2-4) be concave arc face (2-6), two concave arc face (2-6) between form U type passageway for going up mould (1) down. The utility model discloses wear to establish reversal formula left side lower mould, reversal formula right side lower mould respectively on the axle of lower mould, when going up the mould down, the relative antiport of reversal formula left side lower mould, reversal formula right side lower mould extrudes the work piece both sides, borrows it to eliminate the bounce-back after the steel sheet shaping, has effectively solved the problem of secondary school shape behind the work piece bending type, has saved the manpower, has improved efficiency.

Description

Anti-rebound bending die

Technical Field

The utility model relates to a mould particularly, is an anti-bounce bending mould.

Background

The bending die is a die for bending a blank or a semi-finished product into a certain shape. The bending die is generally composed of an upper die and a lower die, and after the bending of the traditional die, the phenomenon that the opening size is larger than the size required by a drawing always occurs due to the self rebound effect of a steel plate. At this time, the drawing needs to be deformed again subsequently to meet the dimensional requirement of the drawing, so that a shaping procedure is added, the efficiency is low, and the quality is not controlled well.

Disclosure of Invention

An object of the utility model is to provide an anti curved mould of bounce-back has solved the problem of secondary school shape behind the curved effectively, has saved the manpower, has improved efficiency.

The utility model discloses a following technical means realize: the utility model provides an anti-rebound bending die, includes mould and lower mould, the lower mould constitute by die body, fixed axle, the left lower mould of reversal formula and the right lower mould of reversal formula set up on the die body relatively, and all wear to establish on the fixed axle, the left lower mould of reversal formula and the right lower mould of reversal formula relative one side be concave arc face, two concave arc face between form U type passageway and for the cope match-up pattern is down.

Preferably, the concave arc surface gradually protrudes from top to bottom, and the widths of the bottom surfaces of the left counter-rotating lower die and the right counter-rotating lower die are both higher than the width of the top surface.

Preferably, the lower end of the upper die is a convex cambered surface.

Preferably, the width of the upper die is larger than the distance between the bottom surfaces of the left and right reverse lower dies.

Preferably, limiting pieces are arranged among the reverse left lower die, the reverse right lower die and the die body; the limiting sheet is arranged on the fixed shaft in a penetrating mode.

Preferably, the upper surface of the die body is horizontal and is used for placing a workpiece.

The utility model discloses wear to establish reversal formula left side lower mould, reversal formula right side lower mould respectively on the axle of lower mould, when going up the mould down, the relative antiport of reversal formula left side lower mould, reversal formula right side lower mould extrudes the work piece both sides, borrows it to eliminate the bounce-back after the steel sheet shaping, has effectively solved the problem of secondary school shape behind the work piece bending type, has saved the manpower, has improved efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a left side view of fig. 1.

Wherein, the device comprises 1-an upper die, 2-1-a die body, 2-2-a fixed shaft, 2-3-a left counter-rotating lower die, 2-4-a right counter-rotating lower die, 2-5-a limiting sheet, 2-6-a concave cambered surface and 3-a workpiece.

Detailed Description

The following examples further illustrate embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example (b):

an anti-rebound bending die comprises an upper die 1 and a lower die, and specifically, as shown in fig. 2, the lower die comprises a die body 2-1, a fixed shaft 2-2, a reverse left lower die 2-3 and a reverse right lower die 2-4, the reverse left lower die 2-3 and the reverse right lower die 2-4 are oppositely arranged on the die body 2-1 and are respectively arranged on the fixed shaft 2-2 in a penetrating manner, the opposite surfaces of the reverse left lower die 2-3 and the reverse right lower die 2-4 are respectively a concave arc surface 2-6, and a U-shaped channel is formed between the two concave arc surfaces 2-6 for the upper die 1 to descend.

The concave cambered surfaces 2-6 gradually protrude from top to bottom, and the widths of the bottom surfaces of the reverse left lower die 2-3 and the reverse right lower die 2-4 are both higher than the width of the top surface. The lower end of the upper die 1 is a convex cambered surface, and the width of the upper die 1 is larger than the distance between the bottom surfaces of the left counter-rotating lower die 2-3 and the right counter-rotating lower die 2-4. Limiting pieces 2-5 are arranged between the reverse left lower die 2-3, the reverse right lower die 2-4 and the die body 2-1; the limiting sheet 2-5 penetrates through the fixed shaft 2-2, and the upper surface of the die body 2-1 is horizontal and used for placing the workpiece 3.

The working principle is as follows:

as shown in figure 1, when the upper die 1 presses the workpiece 3 to descend to the bottom of a U-shaped channel formed between two cambered surfaces of the reverse left lower die 2-3 and the reverse right lower die 2-4, the workpiece continues to descend, because the width of the convex cambered surface of the upper die 1 is larger than the distance between the bottom surfaces of the reverse left lower die 2-3 and the reverse right lower die 2-4, the upper die 1 presses the reverse left lower die 2-3 and the reverse right lower die 2-4, the left lower die rotates clockwise around a shaft, and the right lower die on the opposite side rotates anticlockwise around the shaft to press two sides of the workpiece 3 to be folded over the size required by the drawing

The angle of + X degree, by means of eliminating the rebound after the steel plate is formed, the extrusion of the die is eliminated, and after the stress of the workpiece is released, the size of the workpiece can meet the requirements of the drawing.

The utility model discloses effectively solve the problem of secondary school shape behind the curved type of work piece, saved the manpower, improved efficiency.

The embodiments of the present invention have been described in detail with reference to the examples, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims

1. The utility model provides an anti-rebound bending type mould, includes mould (1) and lower mould, its characterized in that: the lower die comprises a die body (2-1), a fixed shaft (2-2), a reverse left lower die (2-3) and a reverse right lower die (2-4), the reverse left lower die (2-3) and the reverse right lower die (2-4) are oppositely arranged on the die body (2-1) and are all arranged on the fixed shaft (2-2) in a penetrating mode, one opposite surface of the reverse left lower die (2-3) and the reverse right lower die (2-4) is a concave arc surface (2-6), and a U-shaped channel is formed between the two concave arc surfaces (2-6) to enable the upper die (1) to move downwards.

2. The anti-rebound bending mold of claim 1, wherein: the concave cambered surfaces (2-6) gradually protrude from top to bottom, and the widths of the bottom surfaces of the reverse left lower die (2-3) and the reverse right lower die (2-4) are higher than the width of the top surface.

3. The anti-rebound bending mold according to claim 2, wherein: the lower end of the upper die (1) is a convex cambered surface.

4. The anti-rebound bending mold according to claim 2, wherein: the width of the upper die (1) is larger than the distance between the bottom surfaces of the reverse left lower die (2-3) and the reverse right lower die (2-4).

5. The anti-rebound bending mold according to claim 3, wherein: limiting pieces (2-5) are arranged among the reverse left lower die (2-3), the reverse right lower die (2-4) and the die body (2-1); the limiting sheet (2-5) is arranged on the fixed shaft (2-2) in a penetrating way.

6. The anti-rebound bending mold according to claim 5, wherein: the upper surface of the die body (2-1) is horizontal and is used for placing a workpiece (3).