CN105290331B - A kind of casting mold structure ejected after first core pulling - Google Patents

A kind of casting mold structure ejected after first core pulling Download PDF

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Publication number
CN105290331B
CN105290331B CN201510825448.1A CN201510825448A CN105290331B CN 105290331 B CN105290331 B CN 105290331B CN 201510825448 A CN201510825448 A CN 201510825448A CN 105290331 B CN105290331 B CN 105290331B
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CN
China
Prior art keywords
plate
dynamic
workbench
cover
casting mold
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Application number
CN201510825448.1A
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Chinese (zh)
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CN105290331A (en
Inventor
段聪翀
黄佰成
许明
叶应钧
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合肥熠辉轻合金科技有限公司
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Priority to CN201510825448.1A priority Critical patent/CN105290331B/en
Publication of CN105290331A publication Critical patent/CN105290331A/en
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Publication of CN105290331B publication Critical patent/CN105290331B/en

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Abstract

The present invention provides the casting mold structure ejected after a kind of first core pulling, including frame and the dynamic model being arranged in the frame, cover half, movable plug, top plate and hydraulic cylinder, dynamic model and cover half are in arrangement up and down, contact with each other between the two and form die cavity, mould is operationally, first molten metal is poured into die cavity at dynamic model cast gate, top plate is pulled down by hydraulic cylinder, drive activity plug is moved down, depart from the through hole of product, discharge shrinkage stress, after ejecting dynamic model and product successively using backform bar and ejector beam after formed product, suitable for the die sinking of the product containing through hole, prevent the cracking phenomenon in die sinking of product containing through hole.

Description

A kind of casting mold structure ejected after first core pulling
Technical field
The present invention relates to casting mold technical field, and in particular to ejection die after a kind of first core pulling for casting die Structure.
Background technology
The product that casting mold is developed is in die sinking, if the product contains through hole, is usually first directly to move Start after mould, when then with ejector beam ejecting product, through hole departs from from plug, so as to complete mold-break operations.But, have The product that the larger product of a little quality such as quality is 500g, because the product quality is bigger than normal, its molding time is longer, and product is cold But when, amount of contraction is larger, and the through hole of product is due to shrinking, and through hole can hold plug tightly, the knockout press between product and plug It can increase, so as to increase the frictional force between plug and product, will increase the abrasion of plug in the demoulding, reduce the longevity of plug Life, and the stress of interiors of products can be increased, performance and the life-span of product are influenceed, severe patient, product may go out in shaping Existing cracking phenomena, directly results in product rejection.
The content of the invention
The present invention provides the casting die ejected after a kind of first core pulling, cools down a period of time after product completes cast, first Extract plug out downwards, discharge shrinkage stress, dynamic model and production are ejected successively using backform bar and ejector beam after product is molded completely Product, it is adaptable to the die sinking of the product containing through hole, prevent the cracking phenomenon in die sinking of product containing through hole.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that:
A kind of mould structure ejected after first core pulling, including frame and be arranged in the frame dynamic model, cover half, activity Plug, top plate and hydraulic cylinder;
The workbench of the frame including top, the bottom plate of lower section and for connecting the workbench and bottom plate Connecting rod;
The dynamic model and cover half contact with each other between dynamic model and cover half in arranging up and down and form die cavity, the cover half is consolidated Surely it is arranged on the workbench;
The movable plug sequentially passes through the cover half, workbench and top plate, and is arranged vertically in the frame;
The hydraulic cylinder is vertically arranged on the bottom plate, and the piston rod of the hydraulic cylinder is connected with the top plate, can be passed through Top plate drives the movable plug to be moved up and down between cover half, workbench and top plate;
It is disposed with vertically for the backform bar of dynamic model described in jack-up and for die cavity described in jack-up on the workbench The ejector beam of interior product.
Further, the movable plug includes plug main body and is arranged on the upper and lower spacing of the plug main body two ends Boss and the compression spring being set in the middle part of the plug main body.The design of the positive stop lug boss, be in order to limit movable plug to The stroke of upper motion, enables movable plug smoothly to depart from product, and the effect of the compression spring is in order to when hydraulic cylinder is pushed During top plate movable plug can be driven to move upwards.
Preferably, the upper limit boss is arranged between the workbench and the compression spring, the lower limit Boss is arranged in below the top plate, and the compression spring is arranged between the upper limit boss and the top plate.
Further, the backform bar is fixedly connected through the workbench with the dynamic model of top, the backform bar Lower end is provided with jacking block, and the jacking block is located at the top of the top plate.Top plate is contacted when hydraulic cylinder is ejected with the jacking block face, And drive backform bar to rise vertically, so that dynamic model departs from cover half and product.
Further, the ejector beam is including sequentially passing through the push rod body of rod of the cover half and workbench and being set in Spring on the push rod body of rod.The design of the ejector beam is similar with the movable plug, the work of the spring on ejector beam Industry can drive the push rod body of rod to move upwards also for when hydraulic cylinder pushes top plate.
In order to meet ejection dynamic model and product successively, further, the length of the backform bar is more than the ejector beam Length.
Further, the frame also includes guide support plate, and the guide support plate is slided by guide pillar and the top plate Connection, guide pin bushing is provided between the guide support plate and guide pillar.By the design of guide support plate and guide pillar, it can improve and take out Core and the stability of ejection operation.
Compared with prior art, the advantage of the invention is that:One section is cooled down after being cast using inventive die structure Time, first pass through hydraulic cylinder drop-down top plate, drive activity plug depart from product through hole, discharge shrinkage stress, treat product completely into Top plate is pushed by hydraulic cylinder again after type, backform bar and ejector beam are promoted successively, dynamic model, product is smoothly departed from successively.Due to Casting mold structure of the present invention, before product cooling completely is completed, carries out core pulling action, can lower product and plug Between knockout press, so as to reduce the frictional force between plug and product, reduce the abrasion during plug demoulding, increase the longevity of plug Life, and the stress of interiors of products can be reduced, prevent product generation in die sinking and scrap phenomenon;Mould knot of the present invention Structure, it is not necessary to multiple power sources, only sets a power source, i.e. hydraulic cylinder, it is possible to reduce the cost of manufacture of mould;Actually should During, a hydraulic cylinder can just realize that the core pulling during mould use ejects a series of actions, can realize automatic The demoulding, compared with portable mold, can accelerate operating efficiency and reduce the labor intensity of workman.
Brief description of the drawings
Fig. 1 is the axial sectional view after inventive die structure matched moulds;
Fig. 2 is the axial sectional view of inventive die structure core pulling state, and shows product;
Fig. 3 is axial sectional view when inventive die structure ejects dynamic model and product, and shows product.
In figure:10th, frame, 11, workbench, 12, bottom plate, 13, connecting rod, 14, guide support plate, 15, vertical pole, 20th, dynamic model, 30, cover half, 40, movable plug, 41, plug main body, 42, upper limit boss, 43, lower limit boss, 44, compression bullet Spring, 50, top plate, 51, guide pillar, 60, hydraulic cylinder, 70, die cavity, 80, backform bar, 81, jacking block, 90, ejector beam, 91, the push rod body of rod, 92nd, spring, A, product.
Embodiment
A kind of preferred embodiment to the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1,2 and 3, the mould structure includes frame 10 and the dynamic model 20, the cover half that are arranged in the frame 30th, movable plug 40, top plate 50 and hydraulic cylinder 60.
The workbench 11 of the frame 10 including top, the bottom plate 12 of lower section and for connecting the workbench 11 With the connecting rod 13 of bottom plate 12, the workbench 11 is used to support cover half 30, and the bottom plate 12 is used for supporting cylinder 60, described Workbench 11 is also connected with guide support plate 14 by vertical pole 15, and guide support plate 14 is matched somebody with somebody by guide pin bushing with guide pillar 51 Close, guide pillar 51 is fixedly connected with the top plate 50, the top plate improves its stability moved up and down by guide pillar 51.
The dynamic model 20 and cover half 30 contact with each other between dynamic model 20 and cover half 30 in arranging up and down and form die cavity 70, The die cavity is used to form cast product.
The movable plug 40 includes plug main body 41 and is arranged on the upper and lower positive stop lug boss at the plug main body two ends (42、43)With the compression spring 44 being set in the middle part of the plug main body.The plug main body 41 sequentially passes through the cover half 30, work Make platform 11 and top plate 50, and be arranged vertically in the frame 10.The quantity of movable plug 40 is according to the through hole of cast product Depending on quantity.
The upper limit boss 42 is arranged between the workbench 11 and the compression spring 44, upper limit boss Design, is the plug main body in order to limit the stroke that movable plug is moved upwards, enable movable plug smoothly to depart from product 41 upper end is arranged to circular cone shape, the through hole for coordinating product.The lower limit boss 43 is arranged in the top plate 50 Lower section, for driving slide core rod motion when top plate is moved downward.
The compression spring 44 is arranged between the upper limit boss 42 and the top plate 50, the work of the compression spring When hydraulic cylinder pushes top plate movable plug can be driven to move upwards with being.
The hydraulic cylinder 60 is vertically arranged on the bottom plate 12, and the piston rod of the hydraulic cylinder is connected with the top plate 50, The movable plug 40 can be driven to be moved up and down between cover half 30, workbench 11 and top plate 50 by top plate.
In order that dynamic model and product can be separated from cover half, the mould structure also needs to include being arranged vertically at work On platform 11 for dynamic model 20 described in jack-up backform bar 80 and for described in jack-up in die cavity product A ejector beam 90.
The present embodiment, the backform bar 80 may pass through the workbench 11 and is fixedly connected with the dynamic model 20 of top, should The lower end of backform bar is provided with jacking block 81, and jacking block 81 is located at the top of the top plate 50, and top plate is and described when hydraulic cylinder is ejected Jacking block face is contacted, and drives backform bar to rise vertically, so that dynamic model departs from cover half and product.The backform bar 80 can also be set Structure of the upper end with jacking block is set to, two ends are not fixed, is placed directly through workbench.
The ejector beam 90 is including sequentially passing through the push rod body of rod 91 of the cover half 30 and workbench 11 and being set in Spring 92 on the push rod body of rod, its operation principle and the movable plug are basically identical.Ejector beam uniformly divides along cover half surface Cloth.
Backform bar and ejector beam are promoted successively in order to smoothly complete top plate, and the hydraulic cylinder drives downwards the movable plug After core pulling, the distance of the backform bar lower surface to the top plate is less than the ejector beam lower surface to the distance of the top plate, The length of backform bar described in the present embodiment is more than the length of the ejector beam.
With reference to accompanying drawing 1,2 and 3, the operation principle to the present invention is described:
Mould is not when working, and dynamic model 20 and cover half 30 contact with each other in arranging up and down and form die cavity 70 between the two, Mould operationally, first pours into molten metal in die cavity 70 at the cast gate of dynamic model 20, and product A is formed after cooling a period of time, then Top plate 50 is pulled down by hydraulic cylinder 60, drive activity plug 40 is moved down, so as to be the through hole that end departs from product thereon, release Stress, top plate 50 is pushed after product is molded completely by hydraulic cylinder 60 again, and drive activity plug 40 is moved up, and works as slide core When the upper limit boss 42 of rod 40 withstands workbench 11, the movable stop motion of plug 40 continues to push top by hydraulic cylinder 60 Plate 50, after top plate 50 is contacted with the jacking block 81 of backform bar, drives backform bar 80 to move, when backform bar 80 moves up to contact After dynamic model 20, dynamic model 20 is driven to move, so that dynamic model departs from product A, when top plate 50 is continued up to contact ejector beam It is after 90s, drive ejector beam 90 to move, so as to push product A so that product smoothly departs from from cover half 30, complete whole die sinking dynamic Make.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention In various modifications and improvement that case is made, the protection domain that claims of the present invention determination all should be fallen into.

Claims (7)

1. the casting mold structure ejected after a kind of first core pulling, it is characterised in that including frame (10) and be arranged on the frame On dynamic model (20), cover half (30), movable plug (40), top plate (50) and hydraulic cylinder (60);
The workbench (11) of the frame (10) including top, the bottom plate (12) of lower section and for connecting the workbench With the connecting rod (13) of bottom plate;
The dynamic model (20) and cover half (30) contact with each other between dynamic model and cover half in arranging up and down and form die cavity (70), institute Cover half (30) is stated to be fixedly installed on the workbench (11);
The movable plug (40) sequentially passes through the cover half (30), workbench (11) and top plate (50), and is arranged vertically at In the frame (10);
The hydraulic cylinder (60) is vertically arranged on the bottom plate (12), and the piston rod of the hydraulic cylinder connects with the top plate (50) Connect, the movable plug (40) can be driven to be moved up and down between cover half, workbench and top plate by top plate;
It is disposed with vertically for the backform bar (80) of dynamic model described in jack-up (20) and for jack-up on the workbench (11) The ejector beam (90) of the interior product of the die cavity (70).
2. casting mold structure according to claim 1, it is characterised in that the movable plug (40) includes plug main body (41) and it is arranged on the upper and lower positive stop lug boss at the plug main body two ends (42,43) and the pressure being set in the middle part of the plug main body Contracting spring (44).
3. casting mold structure according to claim 2, it is characterised in that the upper limit boss (42) is arranged in described Between workbench (11) and the compression spring (44), the lower limit boss (43) is arranged in below the top plate (50), The compression spring (44) is arranged between the upper limit boss (42) and the top plate (50).
4. casting mold structure according to claim 1, it is characterised in that the backform bar (80) is flat through the work Platform (11) is fixedly connected with the dynamic model (20) of top, and the lower end of the backform bar (80) is provided with jacking block (81), and the jacking block is located at The top of the top plate (50).
5. casting mold structure according to claim 1, it is characterised in that the ejector beam (90) includes sequentially passing through institute The spring (92) stated the push rod body of rod (91) of cover half (30) and workbench (11) and be set on the push rod body of rod.
6. casting mold structure according to claim 1, it is characterised in that the length of the backform bar (80) is more than described The length of ejector beam (90).
7. casting mold structure according to claim 1, it is characterised in that the frame (10) also includes guide support plate (14), the guide support plate is slidably connected by guide pillar (51) with the top plate (50), the guide support plate (14) and guide pillar (51) guide pin bushing is provided between.
CN201510825448.1A 2015-11-24 2015-11-24 A kind of casting mold structure ejected after first core pulling CN105290331B (en)

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CN201510825448.1A CN105290331B (en) 2015-11-24 2015-11-24 A kind of casting mold structure ejected after first core pulling

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Application Number Priority Date Filing Date Title
CN201510825448.1A CN105290331B (en) 2015-11-24 2015-11-24 A kind of casting mold structure ejected after first core pulling

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CN105290331B true CN105290331B (en) 2017-10-03

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107246927B (en) * 2016-04-26 2020-01-31 宁波浙铁大风化工有限公司 plastic demolding force testing method
CN106216600B (en) * 2016-08-31 2018-09-14 航天海鹰(哈尔滨)钛业有限公司 A kind of liftout attachment for moving moulds on wax injector
CN106583655B (en) * 2017-01-24 2020-10-27 无锡飞而康精铸工程有限公司 Copper alloy precision casting spare casting mold

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179461A2 (en) * 1984-10-26 1986-04-30 Ube Industries, Ltd. Horizontal mold clamping and vertical injection type die cast machine
CN202278715U (en) * 2011-10-25 2012-06-20 牟维军 Two-step ejecting mould mechanism
CN202412618U (en) * 2011-10-25 2012-09-05 牟维军 Mold mechanism with four ejector pin plates for ejecting product twice
CN204295970U (en) * 2014-11-25 2015-04-29 宁波市港腾塑业有限公司 A kind ofly first eject the mould structure of loosing core afterwards
CN205165746U (en) * 2015-11-24 2016-04-20 合肥熠辉轻合金科技有限公司 Ejecting casting mold structure after loosing core earlier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179461A2 (en) * 1984-10-26 1986-04-30 Ube Industries, Ltd. Horizontal mold clamping and vertical injection type die cast machine
CN202278715U (en) * 2011-10-25 2012-06-20 牟维军 Two-step ejecting mould mechanism
CN202412618U (en) * 2011-10-25 2012-09-05 牟维军 Mold mechanism with four ejector pin plates for ejecting product twice
CN204295970U (en) * 2014-11-25 2015-04-29 宁波市港腾塑业有限公司 A kind ofly first eject the mould structure of loosing core afterwards
CN205165746U (en) * 2015-11-24 2016-04-20 合肥熠辉轻合金科技有限公司 Ejecting casting mold structure after loosing core earlier

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