CN102941332A - 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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- CN102941332A CN102941332A CN2012105105778A CN201210510577A CN102941332A CN 102941332 A CN102941332 A CN 102941332A CN 2012105105778 A CN2012105105778 A CN 2012105105778A CN 201210510577 A CN201210510577 A CN 201210510577A CN 102941332 A CN102941332 A CN 102941332A
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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 design and the manufacturing technology 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 the mould.In recent years, along with developing rapidly of China's automobile, motorcycle industry, Die Casting Industry has welcome the new period of development.But meanwhile, also comprehensive mechanical property, life-span and the mould structure etc. of die casting are had higher requirement.
Die casting is a kind of production process of precision, yet the final size that has several factors but can affect die casting changes.Change in size can be divided into again linear change (mainly be owing to shrink cause), the mobile dislocation between mould, and die parting line, foundry goods and mould warpage, the die casting parameter is loosed core and draft angle etc.But there is any final size that must remember die casting to change and 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 of casting stress release and mould etc.For reducing the change in size of final products, necessary strict production control operation is optimized mould structure.
In press casting procedure, the 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 that produces the die casting distortion is a lot, wherein shrink the active and inactive mold package power that causes uneven, when causing die sinking die casting pull the distortion be an important reason, therefore the factor on the die casting self structure is easy to cause the local cover half package power of die casting greater than the dysplasia of dynamic model package power, thereby cause the defectives such as die casting distortion and sticking to mould, this not only greatly reduces the service life of die casting, and the final size that can affect die casting changes, even cause the 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 provide the final size that rationally to control die casting to change, thereby minimizing defects of die casting, increase the service life of die casting, improve the production qualification rate of die casting, the dynamic model of a kind of die casting that reduces production costs falls pull-up structure.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of dynamic model of compression mod falls pull-up structure, comprising matches consists of dynamic model and the cover half that die casting die casting die cavity is arranged, and be slidingly arranged in the demoulding push rod that is used for ejecting die casting in the guide rod through hole that dynamic model is shaped with, the mold parting surface that the central axis of guide rod through hole and dynamic model and cover half applying form is perpendicular, die casting die cavity meta on dynamic model, be shaped with the guide rod through hole coaxial communicate draw the chamber, draw and be provided with die sinking in the chamber and fall pulling block, this die sinking is fallen pulling block by the die casting casting forming, pulling block and drawn the chamber to match to have consisted of the die sinking that is used for increasing die casting and dynamic model package power to fall pull-up structure is fallen in die sinking, and the baseplane phase apical grafting of pulling block is fallen in the face that ejects of demoulding push rod and this die sinking.
For optimizing technique scheme, the concrete measure of taking also comprises:
Above-mentioned dynamic model comprises dynamic model frame and the dynamic mould core that is fixedly mounted in this dynamic model frame, cover half comprises cover half frame and the fixed mold that is fixedly mounted in this cover half frame, dynamic mould core is shaped with the dynamic model die cavity, fixed mold is shaped with the 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 cored hole that the dynamic model frame hole that above-mentioned guide rod through hole is shaped with by the dynamic model frame and dynamic mould core are shaped with forms, drawing the chamber is the circular counter bore that cored hole expands system, the bottom of this circular counter bore is formed with the circular orientation platform, and the face that ejects of demoulding push rod and the plane of circular orientation platform are on same level.
One side of above-mentioned dynamic model frame is provided with to be fixedly linked with demoulding push rod and promotes the ejecting mechanism that demoulding push rod slides and ejects, ejecting mechanism comprises by fastening bolt be fixedly linked equipped top board and top board fixed head, top board is connected with die casting machine pull rod, and demoulding push rod is fixedly connected on the top board fixed head.
Be shaped with the through hole that is linked and packed on the above-mentioned top board fixed head, and the end expansion that the assembling through hole is positioned at top board is shaped with the locating hole coaxial with assembling through hole, demoulding push rod installs and is fixed in the assembling through hole, and the rear end of demoulding push rod is shaped with positioning boss, match in this positioning boss and locating hole location, the front surface phase apical grafting of the bottom surface of positioning boss and top board.
The above-mentioned die sinking die casting of falling the pulling block on die casting cover half die cavity package power 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, highly is 6 millimeters-8 millimeters.
Above-mentioned die sinking fall pulling block behind the die casting die cast by processing mode remove from die casting.
Compared with prior art, the dynamic model of the present invention in the die casting die cavity is provided with and draws the chamber, and utilize die casting when die casting, directly drawing in the chamber die cast to have die sinking to fall pulling block, utilize die sinking to fall pulling block and increase the package power that frictional contact surface improves die casting and dynamic model with drawing the chamber, thereby the assurance die casting can because of the excessive die casting of pulling of the package power of cover half, not avoided the deformation damage of die casting when die sinking.The final size that the present invention can reasonably control die casting changes, thereby the minimizing defects of die casting, the service life of increase die casting, the production qualification rate of raising die casting, reduce and produce and maintenance cost, be particularly suitable for the cover half package power greater than the die casting use of dynamic model package power.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of the embodiment of the invention;
State sketch when Fig. 2 is dynamic model of the present invention and cover half matched moulds;
Fig. 3 is the structural representation of ejecting mechanism among Fig. 1;
Fig. 4 is the cutaway view of die casting among Fig. 1;
Fig. 5 is the structural representation of demoulding push rod among Fig. 1.
The specific embodiment
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 wherein is: die casting die cavity D, 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, positioning boss 42, bottom surface 421, die sinking fall 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.
Extremely shown in Figure 5 such as Fig. 1, the dynamic model of a kind of compression mod of the present invention falls pull-up structure, comprising matches consists of dynamic model 2 and the cover half 3 that die casting 1 die casting die cavity D is arranged, and be slidingly arranged in the demoulding push rod 4 that is used for ejecting die casting 1 among the guide rod through hole 2a that dynamic model 2 is shaped with, the mold parting surface that the axis L of guide rod through hole 2a and dynamic model 2 and cover half 3 applyings form is perpendicular, be positioned among the die casting die cavity D be shaped with on the dynamic model 2 with guide rod through hole 2a coaxial communicate draw chamber 2b, draw and be provided with die sinking among the 2b of chamber and fall pulling block 5, this die sinking is fallen pulling block 5 by die casting 1 casting forming, pulling block 5 and drawn chamber 2b to match to have consisted of and be used for increasing die casting 1 and the die sinking of dynamic model 2 package powers and fall pull-up structure is fallen in die sinking, and the baseplane 51 phase apical graftings of pulling block 5 are fallen in the face that ejects 41 of demoulding push rod 4 and this die sinking.In the prior art, die casting is because dynamic model 2 and cover half 3 pack tightly force unbalance when die-cast product, often cause die casting 1 sticking to mould when die sinking and pulled the situation of distortion, this has not only reduced the mold use life-span, but also the final size that can affect die casting 1 changes, even causes die casting drawing crack waste product.The present invention is directed to the cover half package power greater than the problem of dynamic model package power, be shaped with at dynamic model 2 and draw chamber 2b, die casting 1 is directly drawing among the 2b of chamber integrated die-casting to form die sinking when die casting and is falling pulling block 5, utilize die sinking to fall pulling block 5 and force that die casting 1 is stayed die sinking in the dynamic model 2 when drawing chamber 2b to form die sinking and fall pull-up structure, then by the effect that ejects of demoulding push rod 4, make die sinking fall pulling block 5 and die casting 1 and together eject.So just avoided because the cover half package power greater than the dynamic model package power, and causes the defectives such as die casting 1 die casting distortion and sticking to mould, and then prevented from drawing bad die casting 1 and mold cavity.The present invention is simple in structure, and is reasonable in design, can make the die casting yield rate reach 98.6%, and improve more than 3 times the service life of die casting, has production efficiency high, the characteristics that cost of manufacture is low.
In order further to optimize product structure, among the embodiment as shown in Figure 2, dynamic model 2 comprises dynamic model frame 21 and the dynamic mould core 22 that is fixedly mounted in this dynamic model frame 21, cover half 3 comprises cover half frame 31 and the fixed mold 32 that is fixedly mounted in this cover half frame 31, dynamic mould core 22 is shaped with the dynamic model die cavity, fixed mold 32 is shaped with the 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.
Further referring to Fig. 2, the cored hole that the dynamic model frame hole that guide rod through hole 2a is shaped with by dynamic model frame 21 and dynamic mould core 22 are shaped with forms, drawing chamber 2b is 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 on same level.
As shown in figures 1 and 3, one side of dynamic model frame 21 is provided with to be fixedly linked with demoulding push rod 4 and promotes the ejecting mechanism 6 that demoulding push rod 4 slides and ejects, ejecting mechanism 6 comprises by fastening bolt be fixedly linked equipped top board 61 and top board fixed head 62, top board 61 is connected with die casting machine pull rod 7, and demoulding push rod 4 is fixedly connected on the top board fixed head 62.Die casting machine pull rod 7 is driven by die casting machine, and die casting machine pull rod 7 ejects by ejecting mechanism 6 drive demoulding push rods 4 or resets.
As shown in Figure 3, be shaped with the through hole 62a that is linked and packed on the top board fixed head 62, and the assembling through hole 62a end that is positioned at top board 61 expands and is 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 among the 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 front surface phase apical grafting of the bottom surface 421 of positioning boss 42 and top board 61.
Die sinking of the present invention fall pulling block 5 die casting on die casting 1 cover half die cavity package power greater than the position of dynamic model die cavity package power.It should be that the cover half package power is greater than the position of dynamic model package power that the position of pulling block 5 on die casting 1 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, highly is 6 millimeters-8 millimeters.
Die sinking is fallen pulling block 5 mode by processing behind die casting 1 die cast and is removed 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 according to the size of dynamic model and cover half package power die sinking and fall quantity and the size of pulling block 5, certainly draws chamber and die sinking to fall pulling block 5 and also is 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, at first by falling pulling block 5 with the die sinking of die casting 1 one die casting 1 is forced to stay in the dynamic model die cavity, and make die casting 1 break away from the cover half die cavity, then promote demoulding push rods 4 by the die casting machine pull rod 7 of die casting machine by ejecting mechanism 6 and in guide rod through hole 2a, withstand die sinking to front slide and fall pulling block 5, make die sinking fall pulling block 5 and die casting 1 and eject together, finish the demoulding of die casting 1.By the mode of processing die sinking is fallen pulling block 5 from die casting 1 removal again after die casting 1 demoulding.
For in the unbalanced situation of active and inactive mold package power, make the shaping of die casting 1 good, deflection is little, yield rate is high, its key is the drawing-die distortion of control mold cavity.For this reason, the present invention is shaped with in the dynamic model die cavity of dynamic model and draws the chamber, and utilize die casting to cooperate to draw the chamber rheo-die-casting to be formed with die sinking and fall pulling block, pull-up structure is fallen in the die sinking of falling pulling block and drawing packing tightly of chamber cooperate to form dynamic model by die sinking, during die sinking, fall the effect of pulling block by die sinking and make die casting break away from the cover half die cavity, so just avoided die casting to be out of shape because of the drawing-die that the package power that is subject to the cover half die cavity produces, guarantee the stability of size, prevented from drawing bad die casting and mold cavity.The final size that the present invention can reasonably control die casting changes, thereby reduces defects of die casting, increases the service life of die casting, improves the production qualification rate of die casting, reduces and produces and maintenance cost.
Claims (8)
1. the dynamic model of a compression mod falls pull-up structure, comprising matches consists of dynamic model (2) and the cover half (3) that die casting (1) die casting die cavity (D) is arranged, and be slidingly arranged in the demoulding push rod (4) that is used for ejecting die casting (1) in the guide rod through hole (2a) that dynamic model (2) is shaped with, it is characterized in that: the central axis (L) of described guide rod through hole (2a) is perpendicular with the mold parting surface that dynamic model (2) and cover half (3) applying form, be positioned in the described die casting die cavity (D) be shaped with on the dynamic model (2) with guide rod through hole (2a) coaxial communicate draw chamber (2b), described drawing is provided with die sinking and falls pulling block (5) in the chamber (2b), this die sinking is fallen pulling block (5) by die casting (1) casting forming, pulling block (5) and drawn chamber (2b) to match to have consisted of and be used for increasing die casting (1) and the die sinking of dynamic model (2) package power and fall pull-up structure is fallen in described die sinking, and 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).
2. the dynamic model of a kind of compression mod according to claim 1 falls pull-up structure, it is characterized in that: described dynamic model (2) comprises dynamic model frame (21) and is fixedly mounted on dynamic mould core (22) in this dynamic model frame (21), described cover half (3) comprises cover half frame (31) and is fixedly mounted on fixed mold (32) in this cover half frame (31), described dynamic mould core (22) is shaped with the dynamic model die cavity, described fixed mold (32) is shaped with the 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.
3. the dynamic model of a kind of compression mod according to claim 2 falls pull-up structure, it is characterized in that: the cored hole that the dynamic model frame hole that described guide rod through hole (2a) is shaped with by dynamic model frame (21) and dynamic mould core (22) are shaped with forms, described circular counter bore of drawing chamber (2b) to expand system for cored hole, 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 on same level.
4. the dynamic model of a kind of compression mod according to claim 3 falls pull-up structure, it is characterized in that: a side of described dynamic model frame (21) is provided with to be fixedly linked with demoulding push rod (4) and promotes the ejecting mechanism (6) that demoulding push rod (4) slides and ejects, described ejecting mechanism (6) comprises by fastening bolt be fixedly linked equipped top board (61) and top board fixed head (62), described top board (61) is connected with die casting machine pull rod (7), and described demoulding push rod (4) is fixedly connected on the top board fixed head (62).
5. the dynamic model of a kind of compression mod according to claim 4 falls pull-up structure, it is characterized in that: be shaped with the through hole that is linked and packed (62a) on the described top board fixed head (62), and the end expansion that assembling through hole (62a) is positioned at top board (61) is shaped with the locating hole (62b) coaxial with assembling through hole (62a), described demoulding push rod (4) installs and is fixed in the assembling through hole (62a), and the rear end of demoulding push rod (4) is shaped with positioning boss (42), this positioning boss (42) matches the bottom surface (421) of described positioning boss (42) and the front surface phase apical grafting of top board (61) with locating hole (62b) location.
6. the dynamic model of a kind of compression mod according to claim 5 falls pull-up structure, it is characterized in that: described die sinking is fallen pulling block (5) die casting in the position of the upper cover half die cavity package power of die casting (1) greater than dynamic model die cavity package power.
7. the dynamic model of a kind of compression mod according to claim 6 falls pull-up structure, it is characterized in that: 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, highly is 6 millimeters-8 millimeters.
8. the dynamic model of a kind of compression mod according to claim 7 falls pull-up structure, it is characterized in that: described die sinking is fallen pulling block (5) and is removed from die casting (1) by the mode of processing behind die casting (1) die cast.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN102941332A true CN102941332A (en) | 2013-02-27 |
| CN102941332B CN102941332B (en) | 2015-05-20 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104801692A (en) * | 2015-03-12 | 2015-07-29 | 宁波市北仑华盛模具厂 | Die-casting die |
| 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 |
| CN115106503A (en) * | 2022-07-29 | 2022-09-27 | 湛江德利车辆部件有限公司 | Die casting die sinking deformation reason checking method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801692A (en) * | 2015-03-12 | 2015-07-29 | 宁波市北仑华盛模具厂 | Die-casting die |
| 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 |
| CN115106503A (en) * | 2022-07-29 | 2022-09-27 | 湛江德利车辆部件有限公司 | Die casting die sinking deformation reason checking method |
| 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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|---|---|
| CN102941332B (en) | 2015-05-20 |
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