CN201711428U

CN201711428U - Sheet-forming die with movable female die for flexible bottom die

Info

Publication number: CN201711428U
Application number: CN2010202426970U
Authority: CN
Inventors: 李小平; 彭成允; 邓明; 王春欢; 代兵; 库美芳; 张侠
Original assignee: Chongqing University of Technology
Current assignee: Chongqing University of Technology
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2011-01-19
Anticipated expiration: 2020-06-30

Abstract

The utility model relates to a sheet material forming mold with a movable die of a flexible bottom mold, comprising a movable die, a convex die, a lower die seat, a push rod, a backing plate, a binder plate, a cylinder, an upper die seat, solid particles, Bottom mold cavity, etc.; the solid particle medium is set in the cavity of the movable die above the backing plate; during molding, a closed bottom mold cavity is formed between the movable die, the backing plate and the blank, and the solid particle medium is filled with the bottom mold cavity Inside, it acts as a flexible base to provide back pressure. The utility model adopts the solid particle medium to provide the back pressure, compared with the liquid medium to provide the back pressure mold, the forming is very easy to realize, no special equipment is needed, the solid particles will not leak, the environment will not be polluted, and safe and reliable production can be realized. The back pressure provided by the liquid medium has a uniform pressure distribution, while the solid particle medium can achieve non-uniform back pressure, which can effectively improve the deformation degree of the sheet and make the product thickness uniform. The shape of the solid particle medium bottom mold can be determined by the shape of the top block, which can be adjusted according to specific needs, and the product quality is higher.

Description

A kind of sheet material molding die with flexible bed die movable matrix

Technical field

The utility model belongs to Stamping Die Technology, is specifically related to a kind of sheet material molding die with flexible bed die movable matrix, mainly is the shaping dies at flexible bed die.

Background technology

Existing common diel is pure rigid die, makes product thickness inhomogeneous.The flexible die of back pressure can be provided, and back pressure is many to be provided by liquid medium.The back pressure pressure that it provided is even, and sealing problem is difficult to solve, and is easy to contaminated environment, makes to produce to have safety problem.

Summary of the invention

The utility model does not have back pressure reaches is provided back pressure by liquid medium mould at existing mold, and back pressure is even, seals insoluble problem, and a kind of sheet material molding die with flexible bed die movable matrix is provided.The feature of this mould is simultaneously compound rigid die and flexible die, solid particle can provide non-homogeneous back pressure as flexible bed die, is that the product deformation extent is more even.Simultaneously can solve sealing problem, free from environmental pollution, can realize safe and reliable production.

The technical solution of the utility model is as follows: a kind of sheet material molding die with flexible bed die movable matrix includes movable matrix, punch, die shoe, push rod, backing plate, holding pad, cylinder, upper bolster; One end of described punch is connected on the upper bolster, and the other end of punch matches with the die cavity position of movable matrix; It is characterized in that: cylinder is connected on the upper bolster, and the cylinder axis of cylinder withstands in the groove of holding pad, or is connected in the groove of holding pad, and cylinder axis promotion holding pad moves up and down during cylinder operation; Movable matrix and backing plate are installed on the die shoe, and backing plate is movably arranged in the die cavity of movable matrix, and die shoe is passed in the upper end of push rod, withstand on the movable matrix, and push rod drives movable matrix and moves up or down; Solid particle medium is arranged in the die cavity of the movable matrix above the backing plate; During moulding, form the bed die die cavity of a sealing between movable matrix, backing plate and the blank, solid particle medium is full of in the bed die die cavity, provides back pressure as flexible bed die.

Further feature is: the shape of the flexible bed die that is formed by solid particle medium is corresponding with the shape of cushion block upper surface.

The topmost improvement of the utility model be this patent compound the advantage of rigid die and flexible die.

This mould structure is simple, is shaped a step at the 3rd step solid particle, adopts solid particle medium that back pressure is provided, provide the mould of back pressure to compare with liquid medium, be shaped and very easily realize, do not need special installation, solid particle can not leak, and is free from environmental pollution, can realize safe and reliable production.The back pressure that liquid medium provides, pressure distribution is even, and solid particle medium can be realized non-homogeneous back pressure, can effectively improve the sheet metal deformation degree, makes product thickness even.The shape of solid particle medium bed die can be regulated according to specifically needing by the shape decision of jacking block, and product quality is higher.

Description of drawings

Fig. 1 is a kind of sheet material molding die with flexible bed die movable matrix of the utility model;

Fig. 2-1,2-2 is operation principle schematic diagrames of the utility model rigid and flexible composite forming die.

1-die shoe, 2-push rod, 3-backing plate, 4-movable matrix, 5-holding pad, 6-cylinder, 7-upper bolster, 8-punch, 9-solid particle medium, 10-bed die die cavity, 11-blank.

The specific embodiment

Referring to Fig. 1, be depicted as a kind of sheet material molding die tool with flexible bed die movable matrix, comprise movable matrix 4, punch 8, die shoe 1, push rod 2, backing plate 3, holding pad 5, cylinder 6, upper bolster 7, solid particle bed die 9 etc.; One end of described punch 8 is mounted on the upper bolster 7, and the other end of punch 8 matches with the die cavity position of movable matrix 4; Described cylinder 6 is connected on the upper bolster 7, and the cylinder axis of cylinder 6 withstands in the groove of holding pad 5, or is connected in the groove of holding pad 5, and cylinder axis is corresponding during cylinder 6 work elongates or shortens, promote holding pad 5 and move up and down, near or away from upper bolster 7; Movable matrix 4 and backing plate 3 are arranged on the die shoe 1, and backing plate 3 is movably arranged in the die cavity of movable matrix 4, and backing plate 3 can be certain up and down in the die cavity of movable matrix 4, and backing plate 3 is corresponding with the position of punch 8.Die shoe 1 is passed in the upper end of push rod 2, withstands on the movable matrix 4, and push rod 2 externally acts on down motion up or down, drives die 4 and moves up or down synchronously; Backing plate 3 is provided with solid particle medium 9.When moulding, between movable matrix 4, backing plate 3 and blank 11, form the bed die die cavity 10 of a relative closure, solid particle medium 9 is filled in the bed die die cavity 10, as flexible bed die, produces back pressure when blank 11 moulding.

Mould of the present utility model adopts solid particle medium 9 that back pressure is provided, and provides the mould of back pressure to compare with liquid medium, is shaped and realizes that very easily do not need special installation, solid particle medium 9 can not leak, and is free from environmental pollution, can realize safe and reliable production.Can realize non-homogeneous back pressure, can effectively improve the sheet metal deformation degree, make product thickness even.

The shape of the flexible forming bed die that solid particle medium 9 forms is by the shape decision of backing plate 3, and is corresponding with the shape of backing plate 3 upper surfaces, can regulate according to specifically needing, and product quality is higher.

Solid particle medium 9 of the present utility model mainly adopts steel ball, steel ball, Metal Ball or the suitable particle of other performances, satisfies the needs of moulding extruding.

The course of work of the sheet material molding die of the flexible bed die movable matrix of the utility model band, mould of the present utility model has three course of action, and at first the cylinder axis with cylinder 6 outwards extends, and makes holding pad 5 moving away from upper bolster 7(one, cylinder 6 promotes holding pad 5); In the position of adjusting movable matrixes 4 by push rod 2, mainly be plate with blank 11() be placed on (two is moving, and push rod promotion movable matrix 4 moves) between holding pad 5 and the movable matrix 4; Cylinder axis with cylinder 6 shrinks (upwards shortening among the figure) then, drives holding pad 5 and moves to upper bolster 7, and push rod 2 protrudes upward synchronously simultaneously; Perhaps, move down, the lower end of punch 8 is contacted gradually with blank 11 by the motor drives punch 8 of lathe, and compressing blank 11 distortion (three is moving, and lathe drives punch 8 and moves down); When the upper end of holding pad 5 contact with upper bolster 7 make holding pad 5 stop to move up after, can adopt external force to make punch 8 continue to move down, with blank 11 by advancing in the solid particle medium 9, the back pressure moulding that provides by solid particle medium 9; Perhaps adopt external force that backing plate 3 is up moved, or die shoe 1 drives backing plate 3 and up moves, with blank 11 by advancing in the solid particle medium 9, the back pressure moulding that provides by solid particle medium 9.During moulding,, play poly-material effect earlier by 8 pre-profiling of rigidity punch.By flexible solid particles medium 9 final shaping units, guarantee to have very high formed precision again.

Claims

1. A sheet metal forming mold with a movable die of a flexible bottom mold, including a movable die (4), a punch (8), a lower mold base (1), an ejector pin (2), and a backing plate (3) , binder plate (5), cylinder (6), upper die base (7); one end of the punch (8) is connected to the upper die base (7), and the other end of the punch (8) is connected to the movable concave The position of the cavity of the mold (4) is matched; it is characterized in that: the cylinder (6) is connected to the upper mold base (7), and the cylinder shaft of the cylinder (6) is in the groove of the binder plate (5), or Connected in the groove of the clamping plate (5), the cylinder shaft pushes the clamping plate (5) to move up and down when the cylinder (6) works; the movable die (4) and backing plate (3) are installed on the lower die base (1) On the top, the backing plate (3) is movably set in the cavity of the movable die (4), the upper end of the ejector rod (2) passes through the lower mold base (1), and is pushed against the movable die (4), and the ejector rod ( 2) Drive the movable die (4) to move up or down; the solid particle medium (9) is set in the cavity of the movable die (4) above the backing plate (3); during molding, the movable die (4) A closed bottom mold cavity (10) is formed between the backing plate (3) and the blank (11), and the solid particle medium (9) fills the bottom mold cavity (10) to provide back pressure as a flexible bottom mold.

2. A sheet metal forming mold with a flexible bottom mold movable die according to claim 1, characterized in that: the shape of the flexible bottom mold formed by the solid particle medium (9) is consistent with the upper surface of the pad (3) corresponding to the shape.