CN101780513A - Stamp forging mould - Google Patents

Stamp forging mould Download PDF

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Publication number
CN101780513A
CN101780513A CN 201010143369 CN201010143369A CN101780513A CN 101780513 A CN101780513 A CN 101780513A CN 201010143369 CN201010143369 CN 201010143369 CN 201010143369 A CN201010143369 A CN 201010143369A CN 101780513 A CN101780513 A CN 101780513A
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CN
China
Prior art keywords
die
sheath
counterdie
protection jacket
forging
Prior art date
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Granted
Application number
CN 201010143369
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Chinese (zh)
Other versions
CN101780513B (en
Inventor
刘刚
董锦荣
黄明兴
牟承兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Zhengchang Forging Co Ltd
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Zhejiang Zhengchang Forging Co Ltd
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Publication date
Application filed by Zhejiang Zhengchang Forging Co Ltd filed Critical Zhejiang Zhengchang Forging Co Ltd
Priority to CN201010143369XA priority Critical patent/CN101780513B/en
Publication of CN101780513A publication Critical patent/CN101780513A/en
Application granted granted Critical
Publication of CN101780513B publication Critical patent/CN101780513B/en
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Abstract

The invention discloses a stamp forging mould, which comprises an upper die and a lower die, wherein a punch of the upper die is just opposite to a die orifice of the lower die, and is characterized in that the outer circle of the punch is provided with a movable protection jacket, an inner hole of the protection jacket is in slide fit with the outer circle of the punch, the protection jacket is connected with the upper die through an elastic device, and the lower end surface of the protection jacket can be smoothly and closely attached to the plane on which the die orifice of the lower die is arranged when the lower end surface is contacted with the plane. The stamp forging mould adopts a near-net-shape technology; the produced forge piece is basically free from generating rough selvedge, and the utilization rate of the material can reach 99.5 percent, so not only the raw material can be saved, but also the forge piece can be obtained directly through the cold deformation, and the energy can be saved. The technical scheme breaks through the restriction of the one-time forge formation that the upsetting ratio cannot be more than 3. The service life of the mould is long.

Description

A kind of stamp forging mould
[technical field]
The present invention relates to a kind of stamp forging mould.
[background technology]
For forging some elongated parts, as a kind of high load capacity power on/off plug that is used for power distribution cabinet, material is the T2 red copper, dimension precision requirement height, blemish such as the surface do not allow any crackle, folding, cut, collide with.If adopt common open die forging, impressing forging technology, utilization rate of raw materials is low so, and folding and thickness direction size instability may appear in the surface; If adopt common open type jumping-up technology, the blank that is exposed at counterdie die cavity outside so can move down along with patrix, and produce serious crooked, especially for upset ratio greater than 3 the forging of (upset ratio be meant the bar length that is exposed at counterdie die cavity outside and the ratio of bar diameter), must just can carry out forging molding with multiple tracks jumping-up operation, person's bar can not produce serious bending and cause the moulding failure when shaping and deformation.
[summary of the invention]
In view of the problem of present known technology existence, but the technical problem to be solved in the present invention is to be to provide a kind of energy-conservation joint material disposal molding upset ratio greater than 3 forging, the stamp forging mould of long service life.
For solving the problems of the technologies described above, the present invention takes following technical scheme to finish:
A kind of stamp forging mould, comprise upper die and lower die, the drift of patrix and the die orifice of counterdie over against, it is characterized in that: the cylindrical of described drift is provided with movable sheath, the endoporus of sheath and the cylindrical of drift are slidingly matched, sheath is connected on the patrix by elastic device, can develop mutually and be adjacent to during the plane contact at the lower surface of sheath and counterdie die orifice place.The mold cavity volume of described counterdie is slightly smaller than the volume of forging.
Common forging molding is to finish deformation process by the upper die and lower die extrusion billet, and technical scheme of the present invention is: during forging molding, the sheath of patrix down moves with patrix, sheath at first entangles the bar that is exposed at counterdie die cavity outside, but not extruded bar stock, along with moving down of patrix, sheath is adjacent to the plane at counterdie die orifice place under the effect of elastic device and stops to move downward, this moment, bar was by sheath endoporus and the sealing of counterdie die cavity, and patrix continues to move downward, the drift of patrix is pushing away bar in sheath downward, and till bar was squeezed to the counterdie die orifice, deformation process finished.The above-mentioned forming process that the present invention realizes, bar be in closed state all the time when distortion, thus the moulding upset ratio greater than 3 situation under, bar can not produce bending yet, solved prior art can not the one-shot forming upset ratio greater than 3 technical bottleneck.Simultaneously, the present invention directly obtains forging by cold deformation, saves the energy; Mould of the present invention is according to clean nearly forming technique design, and the mold cavity volume of counterdie is slightly smaller than the volume of forging, so the forging after forging does not produce unnecessary burr and few machining allowance substantially, stock utilization reaches 99.5%, saves raw material.Also have, because forming process of the present invention is that jumping-up is full of, so minimum to the wearing and tearing of mould, die life is very long.
In sum, but the energy-conservation joint material of the present invention disposal molding upset ratio compared with prior art, has outstanding substantive distinguishing features and obvious improvement greater than 3 forging, long service life.
[description of drawings]
The present invention has following accompanying drawing:
Fig. 1 is the structural representation before the moulding of the present invention
Fig. 2 is the structural representation in the forming process of the present invention
Structural representation when Fig. 3 finishes for moulding of the present invention
[specific embodiment]
Accompanying drawing has been represented technical scheme of the present invention and embodiment, further describes each relevant details and operation principle thereof of embodiment below more in conjunction with the accompanying drawings.
With reference to accompanying drawing 1, this kind stamp forging mould, comprise upper die and lower die 9, patrix comprises fixedly connected cope match-plate pattern 1, drift pressing plate 2 and drift fixed head 3, drift 6 is fixed on the patrix by drift fixed head 3, the cylindrical of described drift 6 is provided with movable sheath 7, the cylindrical of the endoporus of sheath 7 and drift 6 is slidingly matched, fit clearance is 0.02mm to 0.03mm, sheath 7 is fixedlyed connected with sheath retainer plate 8, sheath retainer plate 8 can slide up and down and be located on the guide pillar 4, and guide pillar 4 is fixed on the drift fixed head 3, is provided with spring 5 between sheath retainer plate 8 and the drift fixed head 3.Described counterdie 9 is fixed on the lower bolster 14 by counterdie trim ring 12, counterdie 9 has the die cavity of placing blank bar 10, the volume that the mold cavity volume of counterdie is slightly smaller than forging is no more than 0.05%, and the bottom of counterdie 9 die cavities is provided with movable push rod 11, and the bottom of push rod 11 is provided with secondary fore-set 13; The drift 6 of described patrix and the die orifice of counterdie 9 (outlet of counterdie die cavity) over against, can develop mutually and under the effect of described spring 5, be adjacent to mutually during the plane contact at the lower surface of sheath 7 and counterdie 9 die orifice places.Shown in Fig. 1, the high load capacity power on/off plug that is used for power distribution cabinet that this stamp forging mould forged, the diameter of its blank bar 10 is 21mm, length overall is 312mm, the length that is exposed at counterdie 9 die cavities outside is 109mm, upset ratio during distortion is 109/21=5.19, and the volume that the volume of blank bar is a bit larger tham the counterdie die cavity is no more than 0.05%.
Forming process of the present invention is such: with reference to accompanying drawing 2, during forging molding, the sheath of patrix down moves with patrix, sheath at first entangles the bar that is exposed at counterdie die cavity outside, but not extruded bar stock, along with moving down of patrix, the lower surface of sheath is adjacent to the plane at counterdie die orifice place under the effect of spring and stops to move downward, this moment, bar was by sheath endoporus and the sealing of counterdie die cavity, and patrix continues to move downward, and the drift of patrix is pushing away bar in sheath downward, till bar is squeezed to the counterdie die orifice (with reference to accompanying drawing 3), deformation process finishes, and this moment, the forging of gained did not just produce unnecessary burr substantially.

Claims (2)

1. stamp forging mould, comprise upper die and lower die (9), the die orifice of drift of patrix (6) and counterdie (9) over against, it is characterized in that: the cylindrical of described drift (6) is provided with movable sheath (7), the cylindrical of the endoporus of sheath (7) and drift (6) is slidingly matched, sheath (7) is connected on the patrix by elastic device, can develop mutually and be adjacent to during the plane contact at the lower surface of sheath (7) and counterdie (9) die orifice place.
2. a kind of stamp forging mould as claimed in claim 1 is characterized in that: the mold cavity volume of described counterdie (9) is slightly smaller than the volume of forging.
CN201010143369XA 2010-03-10 2010-03-10 One-step forming forging mould of elongated forging with upsetting ratio bigger than 3 Active CN101780513B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010143369XA CN101780513B (en) 2010-03-10 2010-03-10 One-step forming forging mould of elongated forging with upsetting ratio bigger than 3

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010143369XA CN101780513B (en) 2010-03-10 2010-03-10 One-step forming forging mould of elongated forging with upsetting ratio bigger than 3

Publications (2)

Publication Number Publication Date
CN101780513A true CN101780513A (en) 2010-07-21
CN101780513B CN101780513B (en) 2012-09-19

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Family Applications (1)

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CN201010143369XA Active CN101780513B (en) 2010-03-10 2010-03-10 One-step forming forging mould of elongated forging with upsetting ratio bigger than 3

Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101920301A (en) * 2010-09-09 2010-12-22 重庆秋田齿轮有限责任公司 Suspension type upsetting material gathering die structure
CN104353691A (en) * 2014-10-29 2015-02-18 平高集团有限公司 Z type sensing finger one-molded die for high-voltage switch
CN112191791A (en) * 2020-10-19 2021-01-08 抚州申铃汽车配件有限责任公司 Shaft part spline forging and forming system and forming process

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB309695A (en) * 1928-03-07 1929-04-18 Charles William Campbell Improvements in or relating to a machine or apparatus for moulding and lidding meat and fruit pies and tarts
CN2233294Y (en) * 1995-01-06 1996-08-21 韩海 Single-forming cold working apparatus for multibearing lock core key groove
DE19519531A1 (en) * 1995-05-27 1996-11-28 Transferzentrum Produktionstec Extrusion mould with die side mandrel
DE10315126A1 (en) * 2003-04-03 2004-10-14 Marquardt Gmbh & Co. Kg Marking punch for a plastics molding tool has a marking central body with an annular collar and a small diameter shaft coupled to a holder on which spring force acts to press the shaft end against an end plate
DE102004005879A1 (en) * 2004-02-05 2005-09-08 Forschungsgesellschaft Umformtechnik Mbh Ring die support structure for extrusion press has metal ring surrounding ceramic die and has support rings above and below die to relieve die of tensional stresses
CN201067785Y (en) * 2007-06-22 2008-06-04 宝山钢铁股份有限公司 Die forging device for forge piece

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB309695A (en) * 1928-03-07 1929-04-18 Charles William Campbell Improvements in or relating to a machine or apparatus for moulding and lidding meat and fruit pies and tarts
CN2233294Y (en) * 1995-01-06 1996-08-21 韩海 Single-forming cold working apparatus for multibearing lock core key groove
DE19519531A1 (en) * 1995-05-27 1996-11-28 Transferzentrum Produktionstec Extrusion mould with die side mandrel
DE10315126A1 (en) * 2003-04-03 2004-10-14 Marquardt Gmbh & Co. Kg Marking punch for a plastics molding tool has a marking central body with an annular collar and a small diameter shaft coupled to a holder on which spring force acts to press the shaft end against an end plate
DE102004005879A1 (en) * 2004-02-05 2005-09-08 Forschungsgesellschaft Umformtechnik Mbh Ring die support structure for extrusion press has metal ring surrounding ceramic die and has support rings above and below die to relieve die of tensional stresses
CN201067785Y (en) * 2007-06-22 2008-06-04 宝山钢铁股份有限公司 Die forging device for forge piece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101920301A (en) * 2010-09-09 2010-12-22 重庆秋田齿轮有限责任公司 Suspension type upsetting material gathering die structure
CN104353691A (en) * 2014-10-29 2015-02-18 平高集团有限公司 Z type sensing finger one-molded die for high-voltage switch
CN112191791A (en) * 2020-10-19 2021-01-08 抚州申铃汽车配件有限责任公司 Shaft part spline forging and forming system and forming process

Also Published As

Publication number Publication date
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C06 Publication
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C10 Entry into substantive examination
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PE01 Entry into force of the registration of the contract for pledge of patent right
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Denomination of invention: A one-time forming die forging die for slender forgings with a upsetting ratio greater than 3

Granted publication date: 20120919

Pledgee: Industrial Bank Co.,Ltd. Wenzhou Ruian sub branch

Pledgor: ZHEJIANG ZHENGCHANG FORGING Co.,Ltd.

Registration number: Y2024980010192