CN101850388A - Sheet material molding die based on radial thrust and back pressure of solid particle medium - Google Patents

Sheet material molding die based on radial thrust and back pressure of solid particle medium Download PDF

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Publication number
CN101850388A
CN101850388A CN 201010213803 CN201010213803A CN101850388A CN 101850388 A CN101850388 A CN 101850388A CN 201010213803 CN201010213803 CN 201010213803 CN 201010213803 A CN201010213803 A CN 201010213803A CN 101850388 A CN101850388 A CN 101850388A
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CN
China
Prior art keywords
die
solid particle
pressure
radial
sheet
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 201010213803
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Chinese (zh)
Inventor
李小平
彭成允
唐丽文
周志明
代兵
张侠
吴善勇
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Chongqing University of Technology
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Chongqing University of Technology
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Publication date
Application filed by Chongqing University of Technology filed Critical Chongqing University of Technology
Priority to CN 201010213803 priority Critical patent/CN101850388A/en
Publication of CN101850388A publication Critical patent/CN101850388A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a sheet material molding die based on the radial thrust and the back pressure of a solid particle medium, comprising a female die, a male die, a lower die base, an ejector rod, an ejector block, a holding pad, an upper die base, a radial cylinder, a compression cylinder, a pressure block, a pressure head, a sealing block, a solid particle bottom die, radial solid particles, and the like. The sheet material molding die is a novel die formed by compounding the radial thrust increasing on the solid particle medium with back pressure provided by the solid particle medium. The invention can improve the stress condition of a deformation area, lower the load of a force transferring area and remarkably improve the degree of deformation, and is particularly suitable for forming complex parts; compared with a liquid medium, the solid particle medium providing the back pressure is easy to form without special equipment, and the solid particles can not leak or pollute the environment; and safe and reliable production can be realized.

Description

Sheet material molding die based on solid particle medium radial thrust and back pressure
Technical field
The invention belongs to Stamping Die Technology, be specifically related to a kind of with the footpath based on the sheet material molding die of solid particle medium radial thrust and back pressure at the mould that back pressure and radial thrust can be provided.
Technical background
The existing diel that back pressure can be provided, mostly back pressure is to be provided by liquid medium.The back pressure that is provided of this mould, pressure evenly distributes.Existing common shaping dies does not have radial thrust, is shaped to drive plate by punch, finishes to the die pulling.The cupping tool of band hydraulic radial, radial thrust realizes by fluid pressure, and it is complicated to have the cupping tool structure of hydraulic means, cost is higher.Leakage phenomenon can take place in liquid medium, pollutes the environment.Simultaneously, liquid medium leaks and can splash away, goes out security incident easily.
Summary of the invention
The present invention is directed to existing mold and can't change the insoluble problem of cupping tool sealing problem that alterable brake bead resistance and common shaping dies do not have radial thrust and band hydraulic radial, the existing mould that back pressure is provided, the insoluble too problem of sealing problem, thus provide one one kinds based on the sheet material molding die of solid particle medium radial thrust and back pressure the problems referred to above to be resolved with the footpath.
Technical scheme of the present invention is as follows: a kind of sheet material molding die based on solid particle medium radial thrust and back pressure comprises die shoe, die, punch, upper bolster, punch is installed on the upper bolster, and die is installed on the die shoe, moulding in the die cavity of blank between die and punch; It is characterized in that: clamping cylinder is installed on the upper bolster, and the working end of clamping cylinder contacts with the upper surface of holding pad, and radially the working end of the cylinder briquetting upper surface interior with being placed in holding pad contacts, and the briquetting lower surface contacts with pressure head or is connected; Jacking block is arranged in the cavity of die, and solid particle is arranged on above the jacking block, and the position of jacking block is corresponding with punch, forms the bed die die cavity between die and jacking block and the blank, and solid particle is full of in the bed die die cavity as flexible bed die during moulding;
On die, corresponding with the position of pressure head, be provided with the particle groove, in the particle groove, be provided with solid particle; Pressure head can stretch in the particle groove; Between holding pad and die sealing block is set, the particle groove of sealing block and die and blank form a radial-sealing space in forming process, and the radial solid particle is filled in the enclosure space
Further feature is: push rod passes die shoe and contacts with the lower surface of jacking block;
Described enclosure space is distributed in the die.
The topmost improvement of the present invention is a kind of novel die that provides back pressure to combine with solid particle medium increase thrust and solid particle medium with radially.
The present invention adopts solid particle medium that back pressure is provided, and provides the mould of back pressure to compare with liquid medium, is shaped to realize that very easily do not need special installation, solid particle can not leak, and is free from environmental pollution, can realize safe and reliable production.The liquid medium back pressure, pressure distribution is even, and solid particle medium back pressure can be realized non-homogeneous back pressure, prevents local attenuation drawing crack.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.The advantage of this patent is compound rigid die and flexible die can effectively improve the sheet metal deformation degree, and product thickness is even.This patent can improve the deformed area stressing conditions, reduces the force transmission region load, can very improve deformation extent significantly, is particularly suitable for the complex parts moulding.
This mould structure is simple, and radial thrust is delivered on the plate by solid particle medium by cylinder radially, can realize safe and reliable, free of contamination production.This mould structure also can be realized binder by clamping cylinder, realizes radial thrust by the lathe air cushion.Compare with common shaping dies, it is easier to be shaped, and effect is very remarkable.
Description of drawings
Fig. 1 is the sheet material molding die that the present invention is based on solid particle medium radial thrust and back pressure
Among the figure: 1-die shoe, 2-push rod, 3-jacking block, 4-die, 5-holding pad, 6-radially cylinders, 7-punch, 8-upper bolster, 9-clamping cylinder, 10-briquetting, 11-pressure head, 12-sealing block, 13-solid particle, 14-radial solid particle, 15-bed die die cavity, 16-radial-sealing space, 17-blank, 18-particle groove.
The specific embodiment
Referring to Fig. 1, be depicted as and a kind ofly comprise punch 7, die 4 based on the sheet material molding die of solid particle medium radial thrust and back pressure with the footpath, die shoe 1, push rod 2, jacking block 3, holding pad 5, radially cylinder 6, upper bolster 8, clamping cylinder 9, briquetting 10, pressure head 11, sealing block 12, solid particle bed die 13, radial solid particle 14, bed die die cavity 15, radial-sealing space 16.Punch 7 is installed on the upper bolster 8, and die 4 is installed on the die shoe 1, moulding in the die cavity of described blank 17 between die 4 and punch 7; Clamping cylinder 9 is installed on the upper bolster 8, and its working end contacts with the upper surface of holding pad 5, and clamping cylinder 9 can promote holding pad 5 and move up and down, and produces pressure; Radially cylinder 6 is installed on the upper bolster 8, radially the working end of cylinder 6 contacts with briquetting 10 upper surfaces in being placed in holding pad 5, briquetting 10 lower surfaces contact with pressure head 11 or are connected with pressure head 11, and radially cylinder 6 acts on the pressure head 11 by briquetting 10, make pressure head 11 radial extents or shortening; Jacking block 3 is arranged in the cavity of die 4, and solid particle 13 is arranged on above the jacking block 3, and the position of jacking block 3 is corresponding with punch 7; Push rod 2 passes die shoe 1 and contacts with the lower surface of jacking block 3, jack-up jacking block 3 up just when push rod 2 up stretches out, or give 3 one active forces that make progress of jacking block, jacking block 3 can up move under push rod 2 effects when needing.Form bed die die cavity 15 between die 4 and jacking block 3 and the blank 17, solid particle 13 is filled in when moulding in the bed die die cavity 15 as flexible bed die, and blank 17 is at punch 7 and be placed in moulding between the solid particle 13 flexible bed dies in the bed die die cavity 15; So just can prevent that solid particle from splashing out, prevent contaminated environment, realize safe and reliable production simultaneously.The flexible bed die that solid particle 13 constitutes, its shape can provide non-homogeneous back pressure by the shape decision of jacking block 3, and the sheet metal deformation degree effectively is provided, and makes product thickness even.
On die 4, corresponding with the position of pressure head 11, be provided with particle groove 18, in particle groove 18, be provided with solid particle 14; Pressure head 11 can stretch in the particle groove 18.Sealing block 12 is arranged between holding pad 5 and the die 4, promptly be arranged between holding pad 5 lower surfaces or die 4 upper surfaces, sealing block 12 forms a radial-sealing space 16 with the particle groove 18 and the blank 17 of die 4 in forming process, radial solid particle 14 is filled in the enclosure space 16; In matched moulds and forging process, under pressure head 11 effects, radial solid particle 14 radially produces thrust, acts on the two ends of blank 17, and blank 17 is subjected to the radial thrust of radial solid particle 14 in forming process.Simultaneously, radial-sealing space 16 can prevent that radial solid particle 14 from splashing away.The radial-sealing space 16 that forms between holding pad 5 and die 4 among the figure is distributed in the die 4, and the radial thrust that radial solid particle 14 is produced equates.Under radially cylinder 6 acted on, the radial solid particles 14 that pressure head 11 promotes in the radial-sealing spaces 16 produced radial thrusts, act on the two ends of blank 17.A plurality of radially cylinders 6 are fixed on the upper bolster 8, guarantee radial solid particle 14 synchronous effects in the uniform radial-sealing space 16, guarantee effect equates in the two ends of blank 17 radial thrust, strengthens its running stability.For the radial thrust that guarantees two ends, the left and right sides equates that described enclosure space 16 is distributed in the die 4.The suffered radial thrust of plate is applied by the radial solid particle 14 in the radial-sealing space 16, and source pressure promotes by pressure head 11 in cylinder; The plate back pressure is applied by solid particle 13, and source pressure transmits by push rod 2, jacking block 3 in air cushion.
Solid particle 13 of the present invention, radial solid particle 14 mainly adopt steel ball, steel ball, Metal Ball or the suitable particle of other performances, satisfy the needs of moulding extruding.

Claims (3)

1. based on the sheet material molding die of solid particle medium radial thrust and back pressure, comprise die holder (1), die (4), punch (7), upper bolster (8), punch (7) is installed on the upper bolster (8), die (4) is installed on the die shoe (1), moulding in the die cavity of blank (17) between die (4) and punch (7); It is characterized in that: clamping cylinder (9) is installed on the upper bolster (8), the working end of clamping cylinder (9) contacts with the upper surface of holding pad (5), radially the working end of cylinder (6) briquetting (10) upper surface interior with being placed in holding pad (5) contacts, and briquetting (10) lower surface contacts with pressure head (11) or is connected; Jacking block (3) is arranged in the cavity of die (4), solid particle (13) is arranged on above the jacking block (3), the position of jacking block (3) is corresponding with punch (7), form bed die die cavity (15) between die (4) and jacking block (3) and the blank (17), solid particle during moulding (13) is full of in the bed die die cavity (15) as flexible bed die;
On die (4), corresponding with the position of pressure head (11), be provided with particle groove (18), in particle groove (18), be provided with solid particle (14); Pressure head (11) can stretch in the particle groove 18; Between holding pad (5) and die (4), sealing block (12) is set, sealing block (12) forms a radial-sealing space (16) with the particle groove (18) and the blank (17) of die (4) in forming process, radial solid particle (14) is filled in the enclosure space (16).
2. a kind of sheet material molding die based on solid particle medium radial thrust and back pressure according to claim 1 is characterized in that: push rod (2) passes die shoe (1) and contacts with the lower surface of jacking block (3).
3. a kind of sheet material molding die based on solid particle medium radial thrust and back pressure according to claim 1 is characterized in that: described enclosure space (16) is distributed in the die (4).
CN 201010213803 2010-06-30 2010-06-30 Sheet material molding die based on radial thrust and back pressure of solid particle medium Pending CN101850388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010213803 CN101850388A (en) 2010-06-30 2010-06-30 Sheet material molding die based on radial thrust and back pressure of solid particle medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010213803 CN101850388A (en) 2010-06-30 2010-06-30 Sheet material molding die based on radial thrust and back pressure of solid particle medium

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Publication Number Publication Date
CN101850388A true CN101850388A (en) 2010-10-06

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103909132A (en) * 2014-04-04 2014-07-09 燕山大学 Reverse drawing method for soft die with peripheral auxiliary thrust
CN105033050A (en) * 2015-06-26 2015-11-11 昆山—邦泰汽车零部件制造有限公司 Product-stabilized stamping die
CN107695238A (en) * 2017-11-07 2018-02-16 首都航天机械公司 Lid manufacturing process and device on heavy rocket engine negative angle collector
CN108543869A (en) * 2018-04-27 2018-09-18 佛山市奔达普菲自动化有限公司 The two-sided hydraulic stamping mold of automatic demoulding

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5588933A (en) * 1978-12-26 1980-07-05 Hitachi Zosen Corp Deep drawing method
FR2475947A1 (en) * 1980-02-20 1981-08-21 Antonov Evgeny Press for deep stamping metal can from blank - uses sealed chamber to locate rim and edge zone of blank with varying hydraulic pressure applied to rim
JP2002137020A (en) * 2000-10-26 2002-05-14 Fuji Industrial Co Ltd Press-forming method and mold, movable flask member used for mold
CN1644262A (en) * 2005-01-24 2005-07-27 燕山大学 Half-mould forming process for metal plate material
CN201728291U (en) * 2010-06-30 2011-02-02 重庆理工大学 Sheet bar molding mold with radial thrust and back pressure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5588933A (en) * 1978-12-26 1980-07-05 Hitachi Zosen Corp Deep drawing method
FR2475947A1 (en) * 1980-02-20 1981-08-21 Antonov Evgeny Press for deep stamping metal can from blank - uses sealed chamber to locate rim and edge zone of blank with varying hydraulic pressure applied to rim
JP2002137020A (en) * 2000-10-26 2002-05-14 Fuji Industrial Co Ltd Press-forming method and mold, movable flask member used for mold
CN1644262A (en) * 2005-01-24 2005-07-27 燕山大学 Half-mould forming process for metal plate material
CN100376340C (en) * 2005-01-24 2008-03-26 燕山大学 Half-mould forming process for metal plate material
CN201728291U (en) * 2010-06-30 2011-02-02 重庆理工大学 Sheet bar molding mold with radial thrust and back pressure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
《锻压技术》 20100228 张凌云,袁海环 固体颗粒介质拉深新工艺及成形模具设计 93-95 1-3 第35卷, 第1期 2 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103909132A (en) * 2014-04-04 2014-07-09 燕山大学 Reverse drawing method for soft die with peripheral auxiliary thrust
CN105033050A (en) * 2015-06-26 2015-11-11 昆山—邦泰汽车零部件制造有限公司 Product-stabilized stamping die
CN107695238A (en) * 2017-11-07 2018-02-16 首都航天机械公司 Lid manufacturing process and device on heavy rocket engine negative angle collector
CN108543869A (en) * 2018-04-27 2018-09-18 佛山市奔达普菲自动化有限公司 The two-sided hydraulic stamping mold of automatic demoulding
CN108543869B (en) * 2018-04-27 2019-11-05 平湖市大可童车股份有限公司 The two-sided hydraulic stamping mold of automatic demoulding

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Open date: 20101006