CN102941332B - Movable die pull-back structure of die casting die - Google Patents
Movable die pull-back structure of die casting die Download PDFInfo
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- CN102941332B CN102941332B CN201210510577.8A CN201210510577A CN102941332B CN 102941332 B CN102941332 B CN 102941332B CN 201210510577 A CN201210510577 A CN 201210510577A CN 102941332 B CN102941332 B CN 102941332B
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Abstract
The invention discloses a movable die pull-back structure of a die casting die. The movable die pull-back structure comprises a movable die and a fixed die which are matched with each other to form a die casting cavity for a die cast, and a demolding jacking rod which is arranged in a guide rod through hole formed in the movable die and is used for jacking a die cast out, wherein the central axis of the guide rod through hole is perpendicular to a die parting surface formed when the movable die and the fixed die are jointed; a pull-back cavity coaxially communicated with the guide rod through hole is formed in the movable die in the die casting cavity; a die-opening pull-back block is arranged in the pull-back cavity and is formed by die casting of the die cast; the die-opening pull-back block and the pull-back cavity are matched with each other to form a die-opening pull-back structure for increasing wrapping force of the die cast and the movable die; and the jacking surface of the demolding jacking rod abuts against the bottom plane of the die-opening pull-back block. The movable die pull-back structure can rationally control the final size change of the die cast, so that the die casting shortcomings can be reduced, and the service life of the die-casting die is prolonged; and moreover, the production yield of the die cast is improved, and the production and maintenance cost is reduced.
Description
Technical field
The present invention relates to the design and manufaction technical field of die casting, specifically a kind of dynamic model of compression mod falls pull-up structure.
Background technology
Die casting is a large class in mould.In recent years, along with China's automobile, the developing rapidly of motorcycle industry, Die Casting Industry has welcome the new period of development.But meanwhile, also the comprehensive mechanical property of die casting, life-span and mould structure etc. are had higher requirement.
Die casting is a kind of production process of precision, but has several factors but can affect the final size change of die casting.Change in size can be divided into again linear change (mainly causing owing to shrinking), the mobile dislocation between mould, die parting line, foundry goods and mould warpage, and die casting parameter, looses core and draft angle etc.But the final size having any must remember die casting change just depends in part on mould and die accuracy, it also has close relationship with following factor: the normal fluctuation of mould temperature in press casting procedure, injection temperature, cooling velocity, the structure etc. of casting stress release and mould.For reducing the change in size of final products, necessary strict production control operation, optimizes mould structure.
In press casting procedure, die casting distortion is a kind of major defect type of die casting, and it causes die casting geomery and pattern requirement not to be inconsistent the most at last, and die casting is scrapped.And the factor producing die casting distortion is a lot, wherein shrink the active and inactive mold package power caused uneven, when causing die sinking, die casting pulls distortion is an important reason, therefore the factor in die casting self structure is easy to cause die casting local cover half package power to be greater than the dysplasia of dynamic model package power, thus cause the defects such as die casting distortion and sticking to mould, this not only greatly reduces the service life of die casting, and the final size change of die casting can be affected, even cause die casting drawing crack, and then affect product percent of pass, increase and produce and maintenance cost.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned prior art present situation, and the final size change of energy conservative control die casting is provided, thus minimizing defects of die casting, increase the service life of die casting, improve the production qualification rate of die casting, the dynamic model reducing a kind of die casting of production cost falls pull-up structure.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of dynamic model of compression mod falls pull-up structure, comprising matches is configured with dynamic model and the cover half of die casting die casting die cavity, and be slidably arranged in guide rod through hole that dynamic model is shaped with for ejecting the demoulding push rod of die casting, the central axis of guide rod through hole and dynamic model and the cover half mold parting surface formed of fitting is perpendicular, die casting die cavity meta be shaped with on dynamic model coaxially communicate with guide rod through hole draw chamber, draw in chamber and be provided with die sinking and fall pulling block, this die sinking falls pulling block by die casting casting forming, die sinking is fallen pulling block and the die sinking constituted for increasing die casting and dynamic model package power of drawing chamber to match and is fallen pull-up structure, the baseplane phase apical grafting of pulling block is fallen in the face that ejects and this die sinking of demoulding push rod.
For optimizing technique scheme, the concrete measure taked also comprises:
Above-mentioned dynamic model comprises dynamic model frame and is fixedly mounted on the dynamic mould core in this dynamic model frame, cover half comprises cover half frame and is fixedly mounted on the fixed mold in this cover half frame, dynamic mould core is shaped with dynamic model die cavity, fixed mold is shaped with cover half die cavity, and die casting die casting die cavity is combined to form by dynamic model die cavity and cover half die cavity.
The dynamic model frame hole that above-mentioned guide rod through hole is shaped with by dynamic model frame and the cored hole that dynamic mould core is shaped with form, chamber is drawn to be the circular counter bore that cored hole expands system, the bottom of this circular counter bore is formed with circular orientation platform, and the face that ejects of demoulding push rod and the plane of circular orientation platform are in same level.
The side of above-mentioned dynamic model frame is provided with to be fixedly linked with demoulding push rod and promotes demoulding push rod and to slide the ejecting mechanism ejected, ejecting mechanism comprises and to be fixedly linked equipped top board and top board fixed head by fastening bolt, top board is connected with die casting machine pull rod, and demoulding push rod is fixedly connected on top board fixed head.
Above-mentioned top board fixed head is shaped with the through hole that is linked and packed, and assemble through hole be positioned at top board one end expand be shaped with the locating hole coaxial with assembling through hole, demoulding push rod installs and is fixed in assembling through hole, and the rear end of demoulding push rod is shaped with positioning boss, this positioning boss is located with locating hole and is matched, the bottom surface of positioning boss and the front surface phase apical grafting of top board.
The above-mentioned die sinking die casting of falling pulling block cover half die cavity package power on die casting is greater than the position of dynamic model die cavity package power.
It is 0 degree that the draw taper of pulling block is fallen in above-mentioned die sinking, and it is 6 millimeters-8 millimeters that the forming diameter of pulling block is fallen in die sinking, is highly 6 millimeters-8 millimeters.
Above-mentioned die sinking fall pulling block after die casting die cast by processing mode remove from die casting.
Compared with prior art, the dynamic model of the present invention in die casting die cavity is provided with and draws chamber, and utilize die casting when die casting directly drawing die cast in chamber to have die sinking to fall pulling block, die sinking is utilized to fall pulling block and draw chamber to increase package power that frictional contact surface improves die casting and dynamic model, thus ensure that die casting can not pull die casting because the package power of cover half is excessive when die sinking, avoid the deformation damage of die casting.The present invention reasonably can control the final size change of die casting, thus minimizing defects of die casting, increase the service life of die casting, improve the production qualification rate of die casting, reduce and produce and maintenance cost, be particularly suitable for the die casting use that cover half package power is greater than dynamic model package power.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the embodiment of the present invention;
Fig. 2 be dynamic model of the present invention and cover half matched moulds time state diagram;
Fig. 3 is the structural representation of ejecting mechanism in Fig. 1;
Fig. 4 is the sectional view of die casting in Fig. 1;
Fig. 5 is the structural representation of demoulding push rod in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 is to Figure 5 shows that structural representation of the present invention.
Reference numeral is wherein: die casting die cavity D, central axis L, die casting 1, dynamic model 2, guide rod through hole 2a, draw chamber 2b, circular orientation platform 2c, dynamic model frame 21, dynamic mould core 22, cover half 3, cover half frame 31, fixed mold 32, demoulding push rod 4, eject face 41, pulling block 5, baseplane 51, ejecting mechanism 6, top board 61, top board fixed head 62, assembling through hole 62a, locating hole 62b, die casting machine pull rod 7 are fallen in positioning boss 42, bottom surface 421, die sinking.
As shown in Figures 1 to 5, the dynamic model of a kind of compression mod of the present invention falls pull-up structure, comprising matches is configured with dynamic model 2 and the cover half 3 of die casting 1 die casting die cavity D, and be slidably arranged in guide rod through hole 2a that dynamic model 2 is shaped with for ejecting the demoulding push rod 4 of die casting 1, the central axis L of guide rod through hole 2a and dynamic model 2 and cover half 3 mold parting surface formed of fitting is perpendicular, be positioned in die casting die cavity D dynamic model 2 is shaped with coaxially communicate with guide rod through hole 2a draw chamber 2b, draw in the 2b of chamber and be provided with die sinking and fall pulling block 5, this die sinking falls pulling block 5 by die casting 1 casting forming, pulling block 5 and draw chamber 2b to match to constitute and fall pull-up structure for increasing die casting 1 and the die sinking of dynamic model 2 package power is fallen in die sinking, the baseplane 51 phase apical grafting of pulling block 5 is fallen in the face that ejects 41 and this die sinking of demoulding push rod 4.In prior art, die casting is due to the imbalance of dynamic model 2 and cover half 3 package power when die-cast product, often cause die casting 1 sticking to mould when die sinking and pulled the situation of distortion, this not only lowers the mold use life-span, but also the final size change of die casting 1 can be affected, even cause die casting drawing crack waste product.The present invention is directed to the problem that cover half package power is greater than dynamic model package power, dynamic model 2 is shaped with and draws chamber 2b, die casting 1 directly falls pulling block 5 drawing integrated die-casting in the 2b of chamber to form die sinking when die casting, utilize die sinking fall pulling block 5 and draw chamber 2b to form die sinking time force die casting 1 die sinking of staying in dynamic model 2 to be fallen pull-up structure, then eject effect by demoulding push rod 4, make die sinking fall pulling block 5 and die casting 1 and together eject.Doing so avoids because cover half package power is greater than dynamic model package power, and cause the defects such as die casting 1 die casting distortion and sticking to mould, and then prevent from drawing bad die casting 1 and mold cavity.Structure of the present invention is simple, and reasonable in design, die casting yield rate can be made to reach 98.6%, and the service life of die casting improves more than 3 times, has production efficiency high, the feature that cost of manufacture is low.
In order to optimize product structure further, in embodiment as shown in Figure 2, the dynamic mould core 22 that dynamic model 2 comprises dynamic model frame 21 and is fixedly mounted in this dynamic model frame 21, the fixed mold 32 that cover half 3 comprises cover half frame 31 and is fixedly mounted in this cover half frame 31, dynamic mould core 22 is shaped with dynamic model die cavity, fixed mold 32 is shaped with cover half die cavity, and die casting 1 die casting die cavity D is combined to form by dynamic model die cavity and cover half die cavity.
With further reference to Fig. 2, the dynamic model frame hole that guide rod through hole 2a is shaped with by dynamic model frame 21 and the cored hole that dynamic mould core 22 is shaped with form, chamber 2b is drawn to be the circular counter bore that cored hole expands system, the bottom of this circular counter bore is formed with circular orientation platform 2c, and the face that ejects 41 of demoulding push rod 4 and the plane of circular orientation platform 2c are in same level.
As shown in figures 1 and 3, the side of dynamic model frame 21 is provided with to be fixedly linked with demoulding push rod 4 and promotes demoulding push rod 4 and to slide the ejecting mechanism 6 ejected, ejecting mechanism 6 comprises the top board 61 and top board fixed head 62 being fixedly linked equipped by fastening bolt, top board 61 is connected with die casting machine pull rod 7, and demoulding push rod 4 is fixedly connected on top board fixed head 62.Die casting machine pull rod 7 is driven by die casting machine, and die casting machine pull rod 7 drives demoulding push rod 4 eject or reset by ejecting mechanism 6.
As shown in Figure 3, top board fixed head 62 is shaped with the through hole 62a that is linked and packed, and assemble through hole 62a be positioned at top board 61 one end expand be shaped with the locating hole 62b coaxial with assembling through hole 62a.As shown in Figure 5, demoulding push rod 4 installs and is fixed in assembling through hole 62a, and the rear end of demoulding push rod 4 is shaped with positioning boss 42, and this positioning boss 42 is located with locating hole 62b and matched, the bottom surface 421 of positioning boss 42 and the front surface phase apical grafting of top board 61.
Die sinking of the present invention is fallen pulling block 5 die casting cover half die cavity package power on die casting 1 and is greater than the position of dynamic model die cavity package power.It should be the position that cover half package power is greater than dynamic model package power that the position of pulling block 5 on die casting 1 is fallen in die sinking.
It is 0 degree that the draw taper of pulling block 5 is fallen in die sinking of the present invention, and it is 6 millimeters-8 millimeters that the forming diameter of pulling block 5 is fallen in die sinking, is highly 6 millimeters-8 millimeters.
Die sinking fall pulling block 5 after die casting 1 die cast by processing mode remove from die casting 1.
Pull-up structure is fallen in the die sinking that the present invention proposes a kind of die casting 1, and this structure can arrange die sinking according to the size of dynamic model and cover half package power and fall the quantity of pulling block 5 and size, certainly draws chamber and die sinking to fall pulling block 5 and is also not limited to circular structure.
The present invention is when die-cast product, die casting 1 straight forming has die sinking to fall pulling block 5, during die sinking, first by and die casting 1 one die sinking fall pulling block 5 by die casting 1 force stay in dynamic model die cavity, and make die casting 1 depart from cover half die cavity, then promote demoulding push rod 4 forward slip in guide rod through hole 2a by the die casting machine pull rod 7 of die casting machine by ejecting mechanism 6 to withstand die sinking and fall pulling block 5, make die sinking fall pulling block 5 and eject together with die casting 1, complete the demoulding of die casting 1.Die sinking fallen pulling block 5 by the mode of processing again after die casting 1 demoulding to remove from die casting 1.
In order to in the unbalanced situation of active and inactive mold package power, make that the shaping of die casting 1 is good, deflection is little, yield rate is high, its key is the drawing-die distortion controlling mold cavity.For this reason, the present invention is shaped with and draws chamber in the dynamic model die cavity of dynamic model, and utilize die casting to coordinate to draw chamber rheo-die-casting to be formed with die sinking and fall pulling block, pulling block and draw packing tightly to coordinate and forming the die sinking of dynamic model and fall pull-up structure of chamber is fallen by die sinking, during die sinking, falling the effect of pulling block by die sinking and make die casting depart from cover half die cavity, doing so avoids die casting drawing-die distortion of producing because being subject to the package power of cover half die cavity, ensure that the stability of size, prevent from drawing bad die casting and mold cavity.The present invention reasonably can control the final size change of die casting, thus reduces defects of die casting, increases the service life of die casting, improves the production qualification rate of die casting, reduce and produce and maintenance cost.
Claims (1)
1. the dynamic model of a compression mod falls pull-up structure, comprising matches is configured with dynamic model (2) and the cover half (3) of die casting (1) die casting die cavity (D), and be slidably arranged in guide rod through hole (2a) that dynamic model (2) is shaped with for ejecting the demoulding push rod (4) of die casting (1), it is characterized in that: the central axis (L) of described guide rod through hole (2a) and dynamic model (2) and cover half (3) mold parting surface formed of fitting is perpendicular, be positioned in described die casting die cavity (D) dynamic model (2) is shaped with coaxially communicate with guide rod through hole (2a) draw chamber (2b), described drawing in chamber (2b) is provided with die sinking and falls pulling block (5), this die sinking is fallen pulling block (5) and is directly being drawn integrated die-casting in chamber (2b) shaping by die casting (1) when die casting, pulling block (5) and draw chamber (2b) to match to constitute and fall pull-up structure for increasing die casting (1) and the die sinking of dynamic model (2) package power is fallen in described die sinking, die sinking is utilized to fall pulling block (5) and draw chamber (2b) to force die casting (1) to stay in dynamic model (2) when die sinking, baseplane (51) the phase apical grafting of pulling block (5) is fallen in the face that ejects (41) and this die sinking of described demoulding push rod (4), described die sinking is fallen pulling block (5) die casting and is greater than the position of dynamic model die cavity package power at the upper cover half die cavity package power of die casting (1), described die sinking fall pulling block (5) after die casting (1) die cast by processing mode remove from die casting (1),
It is 0 degree that the draw taper of pulling block (5) is fallen in described die sinking, and it is 6 millimeters-8 millimeters that the forming diameter of pulling block (5) is fallen in die sinking, is highly 6 millimeters-8 millimeters;
Described dynamic model (2) comprises dynamic model frame (21) and is fixedly mounted on the dynamic mould core (22) in this dynamic model frame (21), described cover half (3) comprises cover half frame (31) and is fixedly mounted on the fixed mold (32) in this cover half frame (31), described dynamic mould core (22) is shaped with dynamic model die cavity, described fixed mold (32) is shaped with cover half die cavity, and described die casting (1) die casting die cavity (D) is combined to form by dynamic model die cavity and cover half die cavity;
The dynamic model frame hole that described guide rod through hole (2a) is shaped with by dynamic model frame (21) and the cored hole that dynamic mould core (22) is shaped with form, described draws chamber (2b) for the circular counter bore of cored hole expansion system, the bottom of this circular counter bore is formed with circular orientation platform (2c), and the face that ejects (41) of described demoulding push rod (4) and the plane of circular orientation platform (2c) are in same level;
The side of described dynamic model frame (21) is provided with to be fixedly linked with demoulding push rod (4) and promotes demoulding push rod (4) and to slide the ejecting mechanism (6) ejected, described ejecting mechanism (6) comprises the top board (61) and top board fixed head (62) being fixedly linked equipped by fastening bolt, described top board (61) is connected with die casting machine pull rod (7), and described demoulding push rod (4) is fixedly connected on top board fixed head (62);
Described top board fixed head (62) is shaped with the through hole that is linked and packed (62a), and assemble through hole (62a) be positioned at top board (61) one end expand be shaped with the locating hole (62b) coaxial with assembling through hole (62a), described demoulding push rod (4) installs and is fixed in assembling through hole (62a), and the rear end of demoulding push rod (4) is shaped with positioning boss (42), this positioning boss (42) is located with locating hole (62b) and is matched, the bottom surface (421) of described positioning boss (42) and the front surface phase apical grafting of top board (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210510577.8A CN102941332B (en) | 2012-12-04 | 2012-12-04 | Movable die pull-back structure of die casting die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210510577.8A CN102941332B (en) | 2012-12-04 | 2012-12-04 | Movable die pull-back structure of die casting die |
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| Publication Number | Publication Date |
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| CN102941332A CN102941332A (en) | 2013-02-27 |
| CN102941332B true CN102941332B (en) | 2015-05-20 |
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| CN201210510577.8A Active CN102941332B (en) | 2012-12-04 | 2012-12-04 | Movable die pull-back structure of die casting die |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801692B (en) * | 2015-03-12 | 2016-10-19 | 宁波市北仑华盛模具厂 | A kind of die casting |
| CN107053549A (en) * | 2017-06-27 | 2017-08-18 | 昆山莱捷有色金属有限公司 | A kind of anti-sticking mould with seal groove workpiece |
| CN108543928A (en) * | 2018-05-21 | 2018-09-18 | 河南中帅金属制品有限公司 | Convertible stripper apparatus in a kind of casting iron pan press casting procedure |
| CN113492206A (en) * | 2020-04-02 | 2021-10-12 | 昆山华复精密金属有限公司 | Auxiliary ejection structure |
| CN114042894A (en) * | 2021-11-19 | 2022-02-15 | 东风(十堰)有色铸件有限公司 | Prevent mould structure of aluminum alloy die casting deformation |
| CN115106503B (en) * | 2022-07-29 | 2023-08-22 | 湛江德利车辆部件有限公司 | Method for checking die-casting die-opening deformation reasons |
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| CN101811183A (en) * | 2010-04-21 | 2010-08-25 | 上海瑞尔实业有限公司 | Thimble structure for die-casting mould |
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| JP2002018626A (en) * | 2000-07-05 | 2002-01-22 | Tenma Mag-Tec Kk | Molded product of magnesium alloy |
| JP4772365B2 (en) * | 2005-04-15 | 2011-09-14 | 株式会社東芝 | Case forming method |
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| US3137905A (en) * | 1961-06-26 | 1964-06-23 | Gerity Schultz Corp | Ejecting mechanism for die casting machines |
| CN101811183A (en) * | 2010-04-21 | 2010-08-25 | 上海瑞尔实业有限公司 | Thimble structure for die-casting mould |
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