CN210523775U - High-pressure casting abnormal shape structure exhaust piece - Google Patents
High-pressure casting abnormal shape structure exhaust piece Download PDFInfo
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- CN210523775U CN210523775U CN201920823056.5U CN201920823056U CN210523775U CN 210523775 U CN210523775 U CN 210523775U CN 201920823056 U CN201920823056 U CN 201920823056U CN 210523775 U CN210523775 U CN 210523775U
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Abstract
The utility model discloses a high-pressure casting exhaust block with a special-shaped structure, which comprises a movable mould body and a fixed mould body, wherein a lug is arranged on the movable mould body, a groove is arranged on the fixed mould body, and the shape of the lug is the same as that of the groove; a pouring channel is formed in one end of the fixed die body and communicated with the groove, and an exhaust port is formed in the other end of the fixed die body; after movable mould body and cover half body lock are in the same place, the lug stretches into the recess, and there is the clearance between lug and the recess, the clearance is exhaust passage promptly, water, clearance and gas vent intercommunication, such structural design, because what set up on the movable mould body is bellied three-dimensional lug, its recess cooperation back of seting up with the cover half body, under the condition that does not increase the projection area of foundry goods, does not increase the projection area of exhaust piece and does not increase the appearance volume of mould, the increase exhaust area that is showing, improve the displacement of exhaust piece, exhaust efficiency also obviously increases.
Description
Technical Field
The utility model belongs to the technical field of the high-pressure casting, concretely designs a high-pressure casting abnormal shape structure exhaust piece.
Background
The design of die cast products requires not only mechanical properties but also functionality. Some products need to be operated under high pressure for a long time due to function requirements, and have high air tightness. The newly developed large-torque retarder of the company has a unique structure and large braking torque. The retarder shell is manufactured by adopting a high-pressure casting process, and the retarder shell is complex in product structure (provided with multiple paths of deep-cavity high-pressure oil ducts), thin in wall thickness, high in requirement on airtight leakage detection pressure and high in casting difficulty. The similar shell is produced at home abroad, and the requirement is high due to large airtight pressure in the test, and the qualification rate is only about 60 percent. The die casting is characterized in that the die casting is molded at high speed and high pressure, so for a casting with very high air tightness requirement, the gas in a cavity must be fully exhausted as much as possible in the production process, and an exhaust system must be designed, and the traditional flat exhaust system with a sawtooth structure is used in the die casting die of our company at present and is shown in fig. 1, fig. 2, fig. 3 and fig. 4.
The conventional exhaust system has the following problems: the traditional exhaust system cannot fully exhaust the gas in the cavity, the product with low air tightness (the air tightness requires 2 atmospheric pressures) can meet the use requirement due to the defect of the internal air holes of the casting; the air tightness requirement of the casting is high (about 20 atmospheric pressures are maximum during operation), and the air hole defect generated inside the casting cannot meet the air tightness requirement; under the condition of a certain tonnage of a mold, in order to increase the exhaust volume, the area of an exhaust block needs to be increased, but the projection area of a product can be increased, so that the tonnage of the product is wasted or the tonnage of a machine is lower than the casting requirement of the product, and therefore, a large machine produces small products or a small machine produces large products, and the energy is wasted; since the die casting mold is expensive and the optimum size is considered as much as possible in the mold design, it is difficult to increase the area of the exhaust system to achieve the maximum amount of exhaust in a limited space.
Disclosure of Invention
To the technical problem among the prior art, the utility model provides a high pressure casting abnormal shape structure exhaust piece, its aim at is not increasing the projection area of foundry goods, not increasing the projection area of exhaust piece and not increasing the appearance volume of mould, improves the displacement of exhaust piece.
In order to solve the technical problem, the utility model discloses a following technical scheme solves:
a high-pressure casting special-shaped structure exhaust block comprises a movable die body and a fixed die body, wherein a convex block is arranged on the movable die body, a groove is formed in the fixed die body, and the shape of the convex block is the same as that of the groove; a pouring gate is formed in one end of the fixed die body and communicated with the groove, and an exhaust port is formed in the other end of the fixed die body; after the movable die body and the fixed die body are buckled together, the convex block extends into the groove, a gap is reserved between the convex block and the groove, and the pouring gate is communicated with the exhaust port.
Furthermore, a plurality of flow resisting grooves are formed in the protruding block and used for reducing the flow speed of the pouring liquid in the gap.
Further, be provided with two lugs on the movable mould body, two lugs parallel arrangement, and be provided with the interval between two lugs, two recesses have been seted up on the cover half body, two recesses parallel arrangement.
Furthermore, the width of a gap between the convex block and the groove is 0.5-0.8 mm.
Furthermore, after the movable mould body and the fixed mould body are buckled together, a liquid accumulation groove is formed in the position, close to the pouring gate, on the movable mould body.
Furthermore, a first hole is formed in the liquid accumulation groove, an ejector rod is arranged in the first hole, and the ejector rod is used for ejecting a slag collection bag formed after the casting liquid is cooled and solidified.
Furthermore, a flow channel is formed in the movable mold body, a second hole is formed in the side wall of the movable mold body, the second hole is communicated with the flow channel in the movable mold body, and the second hole is used for introducing cooling liquid.
Further, the side wall of the groove is not perpendicular to the bottom of the groove.
Further, the movable mold body and the fixed mold body are the same in shape.
Compared with the prior art, the utility model discloses following beneficial effect has at least: the utility model relates to a high pressure casting abnormal shape structure exhaust block, including movable mould body and cover half body, be provided with the lug on the movable mould body, set up the recess on the cover half body, the lug is the same with the recess shape; a pouring channel is formed in one end of the fixed die body and communicated with the groove, and an exhaust port is formed in the other end of the fixed die body; after movable mould body and cover half body lock are in the same place, the lug stretches into the recess, and there is the clearance between lug and the recess, the clearance is exhaust passage promptly, water, clearance and gas vent intercommunication, such structural design, because what set up on the movable mould body is bellied three-dimensional lug, its recess cooperation back of seting up with the cover half body, under the condition that does not increase the projection area of foundry goods, does not increase the projection area of exhaust piece and does not increase the appearance volume of mould, the increase exhaust area that is showing, improve the displacement of exhaust piece, exhaust efficiency also obviously increases.
Furthermore, a plurality of flow-blocking grooves are formed in the convex block, the flow-blocking grooves are used for slowing down the flow speed of the pouring liquid in the gap, and the speed of the pouring liquid is very high when the pouring liquid rushes into the exhaust block from the pouring gate, so that the flow-blocking grooves formed in the convex block can increase the flow path of the pouring liquid, the flow speed of the pouring liquid entering from the pouring gate in the gap is slowed down, and the phenomenon that the flow speed of the pouring liquid rushes out of the exhaust block at an excessively high speed is avoided.
Further, be provided with two lugs on the movable mould body, two lug parallel arrangement, and be provided with the interval between two lugs, two recesses have been seted up on the cover half body, two recess parallel arrangement, the benefit of design like this is, two lugs and the recess cooperation back that corresponds, make exhaust area bigger, be favorable to the exhaust more, and simultaneously, under the condition of the exhaust area who realizes needs, the whole volume of exhaust piece also is minimum, and then when designing die casting die, can make die casting die's area also minimum, and the cost is saved.
Furthermore, the width of a gap between the convex block and the groove is 0.5-0.8 mm, and the design size can ensure smooth discharge of gas and play a better flow choking role on the pouring liquid.
Further, movable mould body and cover half body lock back together, the hydrops groove has been seted up to the position that is close to watering on the movable mould body, the pouring liquid that has just flowed in from watering can be collected in the setting of hydrops groove, play certain cushioning effect to the flow of pouring liquid, slow down the velocity of flow, avoid the gas vent that the pouring liquid velocity of flow is too fast flowed to the exhaust piece before the pouring liquid solidifies, in addition, the air current that just gets into the exhaust piece from watering is stronger, through setting up the hydrops groove at watering entry position, can make exhaust effect better.
Furthermore, a flow channel is formed in the movable mold body, a second hole is formed in the side wall of the movable mold body, the second hole is communicated with the flow channel of the movable mold body, cooling liquid is conveniently introduced from the second hole, and the exhaust block is conveniently and quickly cooled after the cooling liquid enters the flow channel.
Further, need clear up from the exhaust piece after the pouring fluid solidifies, the utility model discloses a recess lateral wall is out of plumb with recess bottom, that is to say the lateral wall of recess is the slope setting, and such benefit is the disposable clearance of the pouring fluid after can solidifying that can be convenient fast falls labour saving and time saving.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a moving mold part of a vent block in the prior art;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic view of a prior art mold fixing portion of an exhaust block;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a schematic view of the movable mold part of the exhaust block of the present invention;
FIG. 6 is a front view of FIG. 5;
FIG. 7 is a schematic view of the mold fixing part of the exhaust block of the present invention;
FIG. 8 is a front view of FIG. 7;
FIG. 9 is a side cross-sectional view of FIG. 7;
FIG. 10 is a front cross-sectional view of FIG. 7;
FIG. 11 is a schematic view of the assembly of the movable mold part and the fixed mold part of the exhaust block of the present invention;
fig. 12 is a schematic diagram of the present invention.
In the figure: 1-a bump; 2-a groove; 3-an exhaust port; 4-pouring channel; 5-moving the mould body; 6-fixing the die body; 7-liquid accumulating tank; 8-a first well; 9-coolant holes; 10-an exhaust block; 11-a fixed mould frame; and 12-fixing the mold core.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 11, as a preferred embodiment of the present invention, a high pressure casting exhaust block with a special-shaped structure comprises a movable mold body 5 and a fixed mold body 6, wherein the movable mold body 5 and the fixed mold body 6 have the same shape. Specifically, as shown in fig. 5 and 6, two convex blocks 1 are arranged on the movable mold body 5 along the length direction of the movable mold body 5, the two convex blocks 1 are arranged in parallel, a gap is formed between the two convex blocks 1, and a plurality of flow blocking grooves are uniformly formed in the convex blocks 1, so that the speed of the pouring liquid flowing into the exhaust block from the pouring gate 4 is high, and the flow blocking grooves can slow down the flow speed of the pouring liquid entering from the pouring gate 4 in the gap. Referring to fig. 7, 8, 9 and 10, the fixed mold body 6 is provided with two grooves 2, the two grooves 2 are arranged in parallel, the shape of the projection 1 is the same as that of the groove 2, the side wall of the groove 2 is not perpendicular to the bottom of the groove 2, that is, the side wall of the groove 2 is arranged obliquely, so that the solidified cooling liquid can be cleaned at one time after demolding, and in the embodiment, the inclination of the side wall of the groove 2 is 20 °.
As shown in fig. 7 and 8, three runners 4 are provided at one end of the fixed die body 6, each runner 4 is communicated with the groove 2, and an exhaust port 3 is provided at the other end of the fixed die body 6.
As shown in fig. 11, when in use, the movable mold body 5 and the fixed mold body 6 are buckled together, and after the movable mold body 5 and the fixed mold body 6 are buckled together, the two lugs 1 correspondingly extend into the grooves 2 respectively, a gap is reserved between the lug 1 and the groove 2, and the pouring gate 4, the gap and the exhaust port 3 are communicated. Preferably, the width of the gap between the bump 1 and the groove 2 should be 0.5mm to 0.8mm, and is designed to be 0.7mm in the embodiment.
As shown in fig. 5 and 6, three liquid collecting grooves 7 are provided in the movable mold body 5 at positions close to the runner 4, so that the flow of air just entering the exhaust block from the runner 4 is strong, and the liquid collecting grooves 7 are provided at the inlet position of the runner 4, thereby improving the exhaust effect. A first hole 8 is formed in the liquid accumulation groove 7, an ejector rod is arranged in the first hole 8, and the ejector rod is used for ejecting a liquid slag collection bag formed after the casting liquid is cooled and solidified. A flow channel is formed in the movable mould body 5, a second hole 9 is formed in the side wall of the movable mould body 5, the second hole 9 is communicated with the flow channel in the movable mould body 5, and the second hole 9 is used for introducing cooling liquid.
As shown in fig. 12, the utility model discloses an exhaust piece is when using, fixes cover half side exhaust piece on cover half frame 11 through a plurality of fixed orificess installation, fixes movable mould side exhaust piece on the movable mould frame (not drawn in the figure) through a plurality of fixed orificess installation to make cover half body 6 align with the contact of movable mould body 5, and then fix a position cover half side exhaust piece and movable mould side exhaust piece, form similar valley form wave exhaust this moment, long-pending sediment and choked cavity passageway. When the molten metal is filled, gas in the cavity of the fixed mold core 12 enters the cavity channel of the exhaust block 10 through the pouring gate 4 and is exhausted through the exhaust port 3. In addition, after the molten metal completes the mold filling of the cavity, the speed of the molten metal in the exhaust block cavity channel is rapidly reduced until the molten metal is gradually solidified, the structure formed by the lug 1 and the groove 2 can play a role in flow resistance, and particularly the flow resistance groove formed in the lug 1 can play a role in flow resistance better. The valley-shaped wave-shaped exhaust grooves and the 20-degree groove demoulding inclination are beneficial to demoulding of an exhaust system, and the phenomenon that the exhaust is influenced in the continuous die-casting production process due to the fact that the exhaust is attached to an exhaust block of a movable mould is avoided.
The utility model discloses do not increase the projection area of foundry goods, do not increase the projection area of exhaust piece, can effectively use vacuum die casting technology, the appearance volume of mould does not increase, the clamping force that the mould required does not increase, can effectively discharge and press the gas of injecting stage mould die cavity, ingeniously with traditional two-dimensional planar structure's exhaust piece, extend to three-dimensional spatial structure exhaust piece, effectively improve the discharge of gases of exhaust piece to make the inside gas pocket defect of product satisfy the product operation requirement. Comparing with the same size exhaust block, the surface area of the traditional flat plate type exhaust block in figures 1 to 4 is 47058mm2The surface area of the special-shaped exhaust block of the utility model is 73765mm2Therefore, the exhaust gas displacement is improved by about (73765 mm) on the basis of the original displacement2-47058mm2)/47058mm2＝56％。
The utility model discloses a cooperation mould uses to and full-automatic batch production verifies, satisfies design and production requirement, has solved the difficult problem such as the product exhaust die cavity is not smooth, has similar product popularization meaning.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a high pressure casting abnormal shape structure exhaust piece which characterized in that: the die comprises a movable die body (5) and a fixed die body (6), wherein a convex block (1) is arranged on the movable die body (5), a groove (2) is formed in the fixed die body (6), and the convex block (1) and the groove (2) are the same in shape; a pouring channel (4) is formed in one end of the fixed die body (6), the pouring channel (4) is communicated with the groove (2), and an exhaust port (3) is formed in the other end of the fixed die body (6); the movable mould body (5) with cover half body (6) lock back together, lug (1) stretch into recess (2), just lug (1) with it is gapped between recess (2), water (4) the clearance with gas vent (3) intercommunication.
2. The high pressure casting special-shaped structure exhaust block as claimed in claim 1, wherein: and a plurality of flow resisting grooves are formed in the convex block (1), and the flow resisting grooves are used for slowing down the flow speed of the pouring liquid in the gap.
3. The high pressure casting special-shaped structure exhaust block as claimed in claim 1, wherein: the novel fixed die is characterized in that two lugs (1) are arranged on the movable die body (5), the two lugs (1) are arranged in parallel, a space is arranged between the two lugs (1), two grooves (2) are formed in the fixed die body (6), and the two grooves (2) are arranged in parallel.
4. The high pressure casting special-shaped structure exhaust block as claimed in claim 1, wherein: the width of a gap between the convex block (1) and the groove (2) is 0.5-0.8 mm.
5. The high pressure casting special-shaped structure exhaust block as claimed in claim 1, wherein: after the movable mould body (5) and the fixed mould body (6) are buckled together, a liquid accumulation groove (7) is formed in the position, close to the pouring gate (4), on the movable mould body (5).
6. The high pressure casting special-shaped structure exhaust block as claimed in claim 5, wherein: a first hole (8) is formed in the liquid accumulating tank (7), an ejector rod is arranged in the first hole (8), and the ejector rod is used for jacking a slag collecting bag formed after the casting liquid is cooled and solidified.
7. The high pressure casting special-shaped structure exhaust block as claimed in claim 1, wherein: the cooling die is characterized in that a flow channel is formed in the movable die body (5), a second hole (9) is formed in the side wall of the movable die body (5), the second hole (9) is communicated with the flow channel in the movable die body (5), and the second hole (9) is used for introducing cooling liquid.
8. The high pressure casting special-shaped structure exhaust block as claimed in claim 1, wherein: the side wall of the groove (2) is not perpendicular to the bottom of the groove (2).
9. The high pressure casting special-shaped structure exhaust block as claimed in claim 1, wherein: the movable die body (5) and the fixed die body (6) are the same in shape.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920823056.5U CN210523775U (en) | 2019-05-31 | 2019-05-31 | High-pressure casting abnormal shape structure exhaust piece |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920823056.5U CN210523775U (en) | 2019-05-31 | 2019-05-31 | High-pressure casting abnormal shape structure exhaust piece |
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| CN210523775U true CN210523775U (en) | 2020-05-15 |
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| CN201920823056.5U Active CN210523775U (en) | 2019-05-31 | 2019-05-31 | High-pressure casting abnormal shape structure exhaust piece |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634734A (en) * | 2021-08-10 | 2021-11-12 | 广东鸿图科技股份有限公司 | Vacuum exhaust block for die casting die |
| CN114951595A (en) * | 2022-06-30 | 2022-08-30 | 广东鸿特精密技术（台山）有限公司 | Die casting die |
-
2019
- 2019-05-31 CN CN201920823056.5U patent/CN210523775U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634734A (en) * | 2021-08-10 | 2021-11-12 | 广东鸿图科技股份有限公司 | Vacuum exhaust block for die casting die |
| CN114951595A (en) * | 2022-06-30 | 2022-08-30 | 广东鸿特精密技术（台山）有限公司 | Die casting die |
| CN114951595B (en) * | 2022-06-30 | 2023-12-05 | 广东鸿特精密技术（台山）有限公司 | Die casting die |
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