CN203292211U - Main machine for metal plastic extrusion molding - Google Patents

Main machine for metal plastic extrusion molding Download PDF

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Publication number
CN203292211U
CN203292211U CN2013203210322U CN201320321032U CN203292211U CN 203292211 U CN203292211 U CN 203292211U CN 2013203210322 U CN2013203210322 U CN 2013203210322U CN 201320321032 U CN201320321032 U CN 201320321032U CN 203292211 U CN203292211 U CN 203292211U
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CN
China
Prior art keywords
cylinder
former
plunger
moving
stress
Prior art date
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CN2013203210322U
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Chinese (zh)
Inventor
龙西新
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株洲市文佳实业有限公司
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Priority to CN2013203210322U priority Critical patent/CN203292211U/en
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Publication of CN203292211U publication Critical patent/CN203292211U/en

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Abstract

The utility model relates to a main machine for metal plastic extrusion molding. The main machine comprises a main machine frame, wherein the main machine frame consists of an upper cylinder beam, a lower cylinder beam and upright pillars; the upright pillars are provided with an upper movable beam, a middle movable beam and a lower movable beam; the upper cylinder beam is internally provided with a main cylinder; the main cylinder is internally provided with a main piston rod; a boost plunger cylinder is arranged on the main cylinder and is internally provided with a boost plunger; the upper movable beam is provided with an upper die seat; the upper die seat is internally provided with an upper punch pillar seat and an upper punch; the middle movable beam is provided with an upper stress ring female die; the upper stress ring female die is internally provided with an upper die core; the lower movable beam is provided with a lower stress ring female die; the lower stress ring female die is internally provided with a lower die core; the lower movable beam is connected with a limit spring seat on the lower cylinder beam through a limit rod, a limit spring and a limit nut; a mechanical lock is arranged outside each of the upper stress ring female die and the lower stress ring female die; the lower cylinder beam is internally provided with a lower die drum and a discharging mechanism and the discharging mechanism is provided with a lower punch. The main machine is simple in structure and wide in application range and can meet the energy requirement for deformation of complex parts.

Description

A kind of plastic deformation extrusion molding main frame
Technical field
The utility model relates to a kind of plastic deformation extrusion apparatus, especially relates to a kind of main frame of plastic deformation extrusion apparatus.
Background technology
The extruding metal technology be a kind of less, without the cutting pressure process technology, be the important branch of forging process technology, be also the important component part of advanced manufacturing technology.With traditional manufacturing technology, compare, have and save material, the energy, reduce manufacturing procedure and equipment, improve production efficiency and product quality, the advantage such as reduce production costs.But this technology is owing to being subjected to up till now equipment (be mainly friction press, mechanical press, horizontal forging and upsetting machine etc., to supply with energy little due to their, can not process the part that deformation is large) and the high restriction of mold materials requirement, thereby can not be widely used.
At present, all there are a plurality of application technology bottlenecks in fine forging technology and extrusion modling equipment both at home and abroad, and this technology can not be developed fully.
First, Power supply is large not, can not meet the demand of complex parts deformation institute energy requirement, although the active force of single device (tonnage) is enough, but the energy of supplying with is inadequate, need the repeatedly extruding of multiple devices could meet the geometric deformation of parts, like this, certainly will cause equipment investment large, the wasting of resources, and then affect the extensive promotion and application of this technology, so general industrial and mining enterprises dare not enter.
The second, mould does not have versatility, and interchangeability causes a product specification to need a secondary mould, makes equipment only adapt to batch production, and applicable surface is narrow.
The 3rd, line length is produced in extrusion process, needs multiple devices and 5~20 direct labors, and production site is large, work under bad environment, and production cost is high.
The utility model content
Technical problem to be solved in the utility model is, provides a kind of and can meet the required energy requirement of complex parts deformation, and equipment investment is little, saving resource, and wide accommodation, can improve working environment, the plastic deformation extrusion molding main frame that production cost is low.
the technical scheme that its technical problem that solves the utility model adopts is: a kind of plastic deformation extrusion molding main frame, comprise main machine frame, described main machine frame is by the upper cylinder half beam, lower cylinder beam, column forms, described column is provided with upper moving beam, middle moving beam, lower movable beam, in described upper cylinder half beam, be provided with master cylinder, in described master cylinder, be provided with main piston rod, described main piston rod is provided with function plunger oil cylinder and hydraulic fluid port, in described function plunger oil cylinder, be provided with function plunger and function transmission rod, described master cylinder is provided with the supercharging plunger cylinder, the perforation that is connected with master cylinder of described supercharging plunger cylinder, in described supercharging plunger cylinder, be provided with the supercharging plunger, one of described supercharging plunger is large, other end is little, major part is arranged in the supercharging plunger cylinder, and match with the supercharging plunger cylinder, the microcephaly is arranged in master cylinder, and match with master cylinder, described master cylinder is provided with hydraulic fluid port, described hydraulic fluid port is communicated with the rodless cavity of master cylinder, described supercharging plunger cylinder is provided with supercharging hydraulic fluid port and porting, described supercharging hydraulic fluid port is communicated with the rodless cavity of supercharging plunger cylinder, described porting is communicated with the rod chamber of supercharging plunger cylinder, described upper moving beam is provided with upper bolster, and described upper bolster is connected with main piston rod, in described upper bolster, is provided with upper punch column base and upper punch, and described upper punch is connected with the function transmission rod, forms the upper moving beam built-up section that is connected with master cylinder, the moving beam in described centre is provided with upper stress circle former, in described upper stress circle former, be provided with upper mold core, the moving beam in described centre is connected with upper moving beam by gag lever post, limit spring and stop nut, forms the moving beam built-up section in centre of upper moving beam built-up section motion relatively, described lower movable beam is provided with lower circle stress former, in described lower circle stress former, be provided with lower mold core, described lower movable beam is connected with the limit spring seat on lower cylinder beam by gag lever post, limit spring and stop nut, and formation can play the cylinder beam to do the lower movable beam built-up section that moves downward relatively, described upper stress circle former and lower circle stress former peripheral hardware have mechanical lock, in described lower cylinder beam, are provided with counterdie cylinder and discharging mechanism, and described discharging mechanism is provided with low punch.
Further, described mechanical lock comprises snap close and snap close oil cylinder, described snap close oil cylinder is provided with cylinder head and piston rod, described piston rod passes cylinder head and is connected with snap close by snap close card key and snap close card key cap, described snap close and being interlocked by the closed mould that makes up after upper stress circle former and lower circle stress former matched moulds.
further, described discharging mechanism comprises demoulding oil jar, discharging button cylinder, push rod, the low punch backing plate, the undershoot headstock, knockout plate, the low punch column base, the discharging guide cylinder, the column base guide plate, guiding button cylinder, described discharging button cylinder is arranged on lower cylinder beam, described push rod is arranged in lower cylinder beam, the cylinder head of described demoulding oil jar is connected with discharging button cylinder, the piston rod of described demoulding oil jar is connected with the lower end of push rod by the push rod pad, lower cylinder beam is passed in the upper end of described push rod, the low punch backing plate, the undershoot headstock is connected with knockout plate, described low punch column base is enclosed within the column base guide plate, described low punch is arranged on the low punch column base, described low punch backing plate, the undershoot headstock, knockout plate, the discharging guide cylinder, the low punch column base, the column base guide plate is arranged in the counterdie cylinder of lower cylinder beam successively, described guiding button cylinder is arranged in the counterdie cylinder of lower cylinder beam and is pressed in above the column base guide plate, fastening with lower cylinder beam.
Further, on described upper stress circle former, upper mold core, lower circle stress former, lower mold core, be respectively equipped with air discharge duct and spout hole.
Further, described upper bolster is connected with main piston rod by card key and card key cap.
Compared with prior art, the utlity model has following advantage:
(1) have enough large Power supply, can meet complex parts deformation institute energy requirement; Gesture is pressed the function that station can the up to ten million ox rice of per second output, set up unit head with 0.3~0.5 meter speed of per second and enough large dynamic movement, force blank to produce geometric deformation at a high speed, be full of die cavity, the product parts that obtains the needed geometry of part, size and have certain mechanical performance.
(2) has the sealing die cavity of perfect rigidity, mechanical lock Li Keda hundreds of ton; In die cavity, be provided with air discharge duct and spout hole, be beneficial to blank and be full of die cavity, thus the product parts of acquisition sharp outline, in addition, can effectively solve a Cooling and Lubricator difficult problem, avoid high temperature blank time in mould long, the mould temperature rise is too high, and mold temperature can't be lowered, cause the mould premature failure, the extrusion distortion, the material requirements that the mould manufacture is used is high, can reduce the mould production cost.
(3) the single-power head but has upper and lower Bidirectional-squeezing function; In the middle of upper stress circle former is placed in, move on beam, lower circle stress former is placed on lower movable beam, and lock by mechanical lock, form a pair and form whole moved cross beam by the moving beam in centre and lower movable beam, then by being placed in the spring between lower cylinder beam and lower movable beam, moved cross beam is suspended in the air, is about to closed mould and is suspended in the air; Between upper moving beam and middle moving beam, spring also is set, this device makes, between drift on upper moving beam and closed mould, floating space is also arranged, so just will be installed on the low punch on lower cylinder beam and be installed on the upper punch on upper moving beam, forming the Bidirectional-squeezing structure.
(4) simple in structure, save material, weight of equipment is light; The distinguishing feature that is different from other oil pressure unit is that entablature and master cylinder are that the continuity material is made the upper cylinder half beam, can greatly improve intensity and the rigidity of structure, reduces length and the width of beam, thereby reduces the amount of deflection of beam, improves the rigidity of beam; Sill and counterdie cylinder are that successional material forms lower cylinder beam, also can greatly improve intensity and the rigidity of structure, reduce length and the width of beam, thereby reduce the amount of deflection of beam, improve the rigidity of beam, thereby alleviate the gross weight of main frame, than the gross weight of the conventional oil press of identical nominal pressure, alleviate more than 60%; .
(5) three extrusion processes can substantially improve the blank type of flow, reduce running load, thereby reduce to push the load of equipment, can reduce investment outlay and the energy, and extrusion process is few, and extrusion equipment is few.
(6) has versatility, revolution product parts for dish class, cup class and axle class, only need to change core rod and upper and lower drift, and do not need more mold exchange, automatic manipulator, cooling and lubricating system and discharge system automatically, thereby enlarge the application surface of extrusion modling object, make the forging of small lot, many kinds also can adopt fashion of extrusion production.
(7) can push the part of shape face complexity, as dish type spur gear, biconvex through hole spur gear, gear shaft, multidiameter, through hole annulus, various flange, large specification securing member and various revolutions etc., extruded length size 30~700mm, can effectively solve the defect that extruder extruded length in the past is no more than 100mm.
(8) part quality of extrusion process: a. part shape uniformity and good manufacturability; B. length dimension precision: C. surface roughness: 1.6~25 μ m; D. physical attribute: higher more than 10% than forging.
(9) low punch and discharging mechanism are integrated; when low punch does not squeeze hole, be that extrusion head is again discharging rod, when low punch squeezed hole, discharging mechanism protection low punch was not fractureed; and low punch and discharging mechanism are all inserted in the counterdie cylinder, can reduce the bulk of main frame.
(10) can realize Automatic Control and continuous automatic production, single extruding impulse stroke has three operating pressures from small to large successively, monolateral oil cylinder has the Bidirectional-squeezing effect, the sealing die cavity does not need the matched moulds active force, movable upper and lower drift automatic capturing work centre, according to load, supply with enough large energy, meet the required energy requirement of complex parts deformation, equipment investment is little, saving resource, improve working environment, wide accommodation, qualitative leap is arranged on performance, can effectively solve the technical bottleneck that the high speed hot extrusion forming technology is applied.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is cutaway view embodiment illustrated in fig. 1.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
with reference to accompanying drawing, the present embodiment comprises main machine frame, described main machine frame is by upper cylinder half beam 6, lower cylinder beam 30, column 5 forms by nut, described column 5 is provided with upper moving beam 13, middle moving beam 16, lower movable beam 20, in described upper cylinder half beam 6, be provided with master cylinder 3, in described master cylinder 3, be provided with main piston rod 4, described main piston rod 4 is provided with function plunger oil cylinder and hydraulic fluid port, in described function plunger oil cylinder, be provided with function plunger 7 and function transmission rod 8, described master cylinder 3 is provided with supercharging plunger cylinder 1, the perforation that is connected with master cylinder 3 of described supercharging plunger cylinder 1, in described supercharging plunger cylinder 1, be provided with supercharging plunger 2, one of described supercharging plunger 2 is large, other end is little, major part is arranged in supercharging plunger cylinder 1, and match with supercharging plunger cylinder 1, the microcephaly is arranged in master cylinder 3, and match with master cylinder 3, supercharging plunger cylinder 1 and master cylinder 3 are together in series, can to quilt, be shut the force transmission that supercharging plunger cylinder 1 injection pressure hydraulic oil produces on the hydraulic oil of master cylinder 3 epicoeles, the active force that main piston rod 4 in master cylinder 3 transmits is multiplied, namely master cylinder 3 transmits the active force of supercharging plunger cylinder 1, described master cylinder 3 is provided with hydraulic fluid port, described hydraulic fluid port is communicated with the rodless cavity of master cylinder 3, described supercharging plunger cylinder 1 is provided with supercharging hydraulic fluid port and porting, described supercharging hydraulic fluid port is communicated with the rodless cavity of supercharging plunger cylinder 1, described porting is communicated with the rod chamber of supercharging plunger cylinder 1, described upper moving beam 13 is provided with upper bolster 12, described upper bolster 12 is connected with main piston rod 4 by card key 9 and card key cap 10, in described upper bolster 12, be provided with upper punch column base 14 and upper punch 11, described upper punch 11 is connected with function transmission rod 8, forms the upper moving beam built-up section that is connected with master cylinder 3, the moving beam 16 in described centre is provided with upper stress circle former 15, in described upper stress circle former 15, be provided with upper mold core 17, the moving beam 16 in described centre is connected with upper moving beam 13 by gag lever post, limit spring and stop nut, forms the moving beam built-up section in centre of upper moving beam built-up section motion relatively, described lower movable beam 20 is provided with lower circle stress former 21, in described lower circle stress former 21, be provided with lower mold core 19, described lower movable beam 20 is connected with the limit spring seat on lower cylinder beam 30 by gag lever post, limit spring and stop nut, and formation can play cylinder beam 30 to do the lower movable beam built-up section that moves downward relatively, described upper stress circle former 15 and lower circle stress former 21 peripheral hardwares have mechanical lock, in described lower cylinder beam 30, be provided with counterdie cylinder and discharging mechanism, described discharging mechanism is provided with low punch 24.
Described mechanical lock comprises snap close 38 and snap close oil cylinder 39, and described snap close oil cylinder 39 is provided with cylinder head 40 and piston rod 41, and described piston rod 41 passes cylinder head 40 and is connected with snap close 38 by snap close card key 42 and snap close card key cap 43; Described snap close 38 with by the closed mould that makes up after upper stress circle former 15 and lower circle stress former 21 matched moulds, be interlocked, namely lock.
described discharging mechanism comprises demoulding oil jar 37, discharging button cylinder 33, push rod 32, low punch backing plate 31, undershoot headstock 29, knockout plate 28, low punch column base 27, discharging guide cylinder 26, column base guide plate 25, guiding button cylinder 23, described discharging button cylinder 33 is arranged on lower cylinder beam 30, described push rod 32 is arranged in lower cylinder beam 30, the cylinder head 35 of described demoulding oil jar 37 is connected with discharging button cylinder 33, the piston rod 36 of described demoulding oil jar 37 is connected with the lower end of push rod 32 by push rod pad 34, and lower cylinder beam 30 is passed in the upper end of described push rod 32, low punch backing plate 31, undershoot headstock 29 is connected with knockout plate 28, and described low punch column base 27 is enclosed within column base guide plate 25, and described low punch 24 is arranged on low punch column base 27, described low punch backing plate 31, undershoot headstock 29, knockout plate 28, discharging guide cylinder 26, low punch column base 27, column base guide plate 25 is arranged in the counterdie cylinder of lower cylinder beam 30 successively, and described guiding button cylinder 23 is arranged in the counterdie cylinder of lower cylinder beam 30 and is pressed in above column base guide plate 25, and is fastening with lower cylinder beam 30.
On described upper stress circle former 15, upper mold core 17, lower circle stress former 21, lower mold core 19, be respectively equipped with air discharge duct and spout hole (not shown).
the course of work: the manipulator self-feeding, blank is sent into to mold center, the master cylinder epicoele injects low-pressure hydraulic oil, the blank press-in die, master cylinder stops oiling, the manipulator return, master cylinder is oiling again, upper stress circle former, lower circle stress former close up, and master cylinder stops oiling, then to the snap close oil cylinder, inject high pressure hydraulic oil, to upper stress circle former, lower circle stress former, lock, form the sealing die cavity, then master cylinder injects high pressure hydraulic oil, and upper and lower drift pushes blank, during less than the resistance power of lower end, the downward active force of upper punch forces blank generation geometric deformation when the resistance power of blank upper end, and resistance power strengthens simultaneously, when upper and lower resistance power equates, upper punch moves downward with 2v speed with respect to low punch, the sealing die cavity moves downward with 2v speed with respect to low punch, and the active force that the active force that upper punch is downward and low punch make progress forces blank two, to middle part, geometric deformation occurs, when the resistance power of blank upper end during greater than the resistance power of lower end, upper punch and closed mould move downward simultaneously, the active force that low punch makes progress forces blank generation geometric deformation, the sealing die cavity is filled, three levels are arranged in this process extruding force process: first extrusion process is that upper punch and low punch are got into the material of material-holding chamber the die cavity of the sealing that consists of upper mold core and lower mold core, when the resistance power of blank upper end during greater than the static pressure of upper punch top plunger cylinder, the plunger cylinder off-load, upper punch is backhaul with the deformation of blank, the active force of master cylinder does work to blank continuously simultaneously, force blank to continue deformation, this is second extrusion process, in this process, the effect of shunting material is played in the backhaul space of upper punch, improve the flow regime of material, thereby reduce moulding load, improve the filling of blank, when the total resistance power of blank during greater than the active force of master cylinder, seal master cylinder epicoele hydraulic fluid port, oil in the master cylinder rodless cavity is enclosed in cavity, the oil of the whole cavity of this moment can be regarded incompressible rigid body as, open the oil-in oil-feed of supercharging plunger cylinder, the work of supercharging plunger, the active force of supercharging plunger lower surface is delivered on main piston rod by the rigidity oil body, be delivered to again the extruding end face, force blank to continue the change of generation property, and be full of die cavity, thereby obtain the product parts of sharp outline, then stop to the oiling of supercharging plunger cylinder, and lay down supercharging plunger cylinder and master cylinder load, to the oiling of master cylinder cavity of resorption, make the former backhaul, then to the demoulding oil jar oiling, overstocked commodities are exited to lower mold core, then outside the depanning of automation handgrip extruded product folder, and send into product box.

Claims (5)

1. plastic deformation extrusion molding main frame, it is characterized in that: comprise main machine frame, described main machine frame is by the upper cylinder half beam, lower cylinder beam, column forms, described column is provided with upper moving beam, middle moving beam, lower movable beam, in described upper cylinder half beam, be provided with master cylinder, in described master cylinder, be provided with main piston rod, described main piston rod is provided with function plunger oil cylinder and hydraulic fluid port, in described function plunger oil cylinder, be provided with function plunger and function transmission rod, described master cylinder is provided with the supercharging plunger cylinder, the perforation that is connected with master cylinder of described supercharging plunger cylinder, in described supercharging plunger cylinder, be provided with the supercharging plunger, one of described supercharging plunger is large, other end is little, major part is arranged in the supercharging plunger cylinder, and match with the supercharging plunger cylinder, the microcephaly is arranged in master cylinder, and match with master cylinder, described master cylinder is provided with hydraulic fluid port, described hydraulic fluid port is communicated with the rodless cavity of master cylinder, described supercharging plunger cylinder is provided with supercharging hydraulic fluid port and porting, described supercharging hydraulic fluid port is communicated with the rodless cavity of supercharging plunger cylinder, described porting is communicated with the rod chamber of supercharging plunger cylinder, described upper moving beam is provided with upper bolster, and described upper bolster is connected with main piston rod, in described upper bolster, is provided with upper punch column base and upper punch, and described upper punch is connected with the function transmission rod, forms the upper moving beam built-up section that is connected with master cylinder, the moving beam in described centre is provided with upper stress circle former, in described upper stress circle former, be provided with upper mold core, the moving beam in described centre is connected with upper moving beam by gag lever post, limit spring and stop nut, forms the moving beam built-up section in centre of upper moving beam built-up section motion relatively, described lower movable beam is provided with lower circle stress former, in described lower circle stress former, be provided with lower mold core, described lower movable beam is connected with the limit spring seat on lower cylinder beam by gag lever post, limit spring and stop nut, and formation can play the cylinder beam to do the lower movable beam built-up section that moves downward relatively, described upper stress circle former and lower circle stress former peripheral hardware have mechanical lock, in described lower cylinder beam, are provided with counterdie cylinder and discharging mechanism, and described discharging mechanism is provided with low punch.
2. plastic deformation extrusion molding main frame according to claim 1, it is characterized in that: described mechanical lock comprises snap close and snap close oil cylinder, described snap close oil cylinder is provided with cylinder head and piston rod, described piston rod passes cylinder head and is connected with snap close by snap close card key and snap close card key cap, described snap close and being interlocked by the closed mould that makes up after upper stress circle former and lower circle stress former matched moulds.
3. plastic deformation extrusion molding main frame according to claim 2, it is characterized in that: described discharging mechanism comprises demoulding oil jar, discharging button cylinder, push rod, the low punch backing plate, the undershoot headstock, knockout plate, the low punch column base, the discharging guide cylinder, the column base guide plate, guiding button cylinder, described discharging button cylinder is arranged on lower cylinder beam, described push rod is arranged in lower cylinder beam, the cylinder head of described demoulding oil jar is connected with discharging button cylinder, the piston rod of described demoulding oil jar is connected with the lower end of push rod by the push rod pad, lower cylinder beam is passed in the upper end of described push rod, the low punch backing plate, the undershoot headstock is connected with knockout plate, described low punch column base is enclosed within the column base guide plate, described low punch is arranged on the low punch column base, described low punch backing plate, the undershoot headstock, knockout plate, the discharging guide cylinder, the low punch column base, the column base guide plate is arranged in the counterdie cylinder of lower cylinder beam successively, described guiding button cylinder is arranged in the counterdie cylinder of lower cylinder beam and is pressed in above the column base guide plate, fastening with lower cylinder beam.
4. according to claim 1 and 2 or 3 described plastic deformation extrusion molding main frames, is characterized in that: on described upper stress circle former, upper mold core, lower circle stress former, lower mold core, be respectively equipped with air discharge duct and spout hole.
5. plastic deformation extrusion molding main frame according to claim 4, it is characterized in that: described upper bolster is connected with main piston rod by card key and card key cap.
CN2013203210322U 2013-06-05 2013-06-05 Main machine for metal plastic extrusion molding CN203292211U (en)

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CN2013203210322U CN203292211U (en) 2013-06-05 2013-06-05 Main machine for metal plastic extrusion molding

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103240294A (en) * 2013-06-05 2013-08-14 株洲市文佳实业有限公司 Metal plastic extrusion forming host machine
CN104084440A (en) * 2014-07-22 2014-10-08 株洲市文佳实业有限公司 Forming device for plastic swaging forming of metal
CN104107841A (en) * 2014-07-22 2014-10-22 株洲市文佳实业有限公司 Device for molding by metal deformation and swaging
CN104226871A (en) * 2014-07-22 2014-12-24 株洲市文佳实业有限公司 Metal plastic swaging forming method
CN104138917B (en) * 2014-07-22 2016-03-23 株洲市文佳实业有限公司 The crowded forging assembly of forging molding is squeezed for plastic deformation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103240294A (en) * 2013-06-05 2013-08-14 株洲市文佳实业有限公司 Metal plastic extrusion forming host machine
CN103240294B (en) * 2013-06-05 2015-03-25 株洲市文佳实业有限公司 Metal plastic extrusion forming host machine
CN104084440A (en) * 2014-07-22 2014-10-08 株洲市文佳实业有限公司 Forming device for plastic swaging forming of metal
CN104107841A (en) * 2014-07-22 2014-10-22 株洲市文佳实业有限公司 Device for molding by metal deformation and swaging
CN104226871A (en) * 2014-07-22 2014-12-24 株洲市文佳实业有限公司 Metal plastic swaging forming method
CN104138917B (en) * 2014-07-22 2016-03-23 株洲市文佳实业有限公司 The crowded forging assembly of forging molding is squeezed for plastic deformation
CN104107841B (en) * 2014-07-22 2016-06-01 株洲市文佳实业有限公司 Plastic Deformation squeezes the shaped device of forging molding

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