CN211990814U - Forming die - Google Patents
Forming die Download PDFInfo
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- CN211990814U CN211990814U CN202020378177.6U CN202020378177U CN211990814U CN 211990814 U CN211990814 U CN 211990814U CN 202020378177 U CN202020378177 U CN 202020378177U CN 211990814 U CN211990814 U CN 211990814U
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Abstract
The utility model provides a forming die relates to cast technical field, include: a mold body; a forming cavity is arranged in the die main body; the mould main body is provided with an air exhaust opening, the air exhaust opening is communicated with the forming cavity, and the air exhaust opening is configured to exhaust air in the forming cavity so that the forming cavity is in a vacuum state. Through set up the extraction opening in the mould main part, the gas in the shaping cavity in the mould main part is discharged through the extraction opening, makes the shaping cavity be vacuum state, prevents effectively that gas from influencing the shaping quality of wax matrix, and the die cavity has had remaining air in the mould of having alleviated existence among the prior art, influences the technical problem of the wax matrix quality after the shaping, has realized the technological effect who improves wax matrix shaping quality.
Description
Technical Field
The utility model belongs to the technical field of the casting technique and specifically relates to a forming die is related to.
Background
The investment casting is also called lost wax casting, and comprises the procedures of wax pressing, wax trimming, tree forming, slurry dipping, wax melting, molten metal casting, post-treatment and the like. Lost wax casting is a process in which a wax pattern for a part to be cast is made of wax, and then the wax pattern is coated with slurry, that is, a clay pattern. And after the mud mold is dried, putting the mud mold into hot water to melt the internal wax mold. And taking out the clay mold after the wax mold is melted, and roasting to form the ceramic mold. Once calcined. Generally, a pouring gate is left when a mud mould is manufactured, then molten metal is poured into the mud mould from the pouring gate, and after the mud mould is cooled, required parts are manufactured.
However, the surface quality of the investment casting mainly depends on the surface quality of the wax mold, and the mold form adopted in the conventional investment precision casting wax mold pressing is single and mainly comprises an upper mold plate and a lower mold plate, so that residual air exists in the cavity and the parting surfaces of the upper mold and the lower mold during the wax mold pressing, and finally, the surface of the wax mold may have large-area flow lines and bubbles, and the surface quality of the casting is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a forming die to the die cavity has had remaining air in having alleviated the mould that exists among the prior art, influences the technical problem of the wax matrix quality after the shaping.
In a first aspect, the utility model provides a forming die, include: a mold body;
a forming cavity is arranged in the die main body;
the mould main body is provided with an air exhaust opening, the air exhaust opening is communicated with the forming cavity, and the air exhaust opening is configured to exhaust air in the forming cavity so that the forming cavity is in a vacuum state.
In an alternative embodiment, the mold body comprises an upper mold and a lower mold;
the upper die is covered on the lower die to form the forming cavity;
and a gas flow channel is arranged in the upper die, and gas in the forming cavity is discharged from the pumping hole along the gas flow channel.
In an alternative embodiment, there is a gap between the upper and lower dies, and the gas in the forming chamber passes along the gap into the gas flow channel.
In an alternative embodiment, the forming die further comprises a first seal;
one side of the lower die, which is close to the upper die, is provided with a groove, the first sealing element is arranged in the groove, and the first sealing element is configured to prevent outside air from entering the forming cavity through the gap.
In an alternative embodiment, the molding die further comprises wax injection loose pieces;
the wax injection loose piece is arranged in the lower die, a wax injection channel is arranged in the wax injection loose piece, and the wax injection loose piece is configured to enable wax materials to enter the molding cavity through the wax injection channel.
In an optional embodiment, a fixing groove for accommodating the wax injection loose piece is arranged in the lower die.
In an alternative embodiment, the forming die further comprises a second seal;
the second sealing element is arranged in the fixing groove and is abutted against the wax injection loose piece, and the second sealing element is configured to prevent gas in the fixing groove from entering the forming chamber.
In an alternative embodiment, the mould body is provided with a thread at the location of the suction opening.
In an alternative embodiment, the second seal is provided as a sealing ring.
In an alternative embodiment, the gap has a dimension of 0.1 to 0.3 mm.
The utility model provides a pair of forming die, include: a mold body; a forming cavity is arranged in the die main body; the mould main body is provided with an air exhaust opening, the air exhaust opening is communicated with the forming cavity, and the air exhaust opening is configured to exhaust air in the forming cavity so that the forming cavity is in a vacuum state. Through set up the extraction opening in the mould main part, the gas in the shaping cavity in the mould main part is discharged through the extraction opening, makes the shaping cavity be vacuum state, prevents effectively that gas from influencing the shaping quality of wax matrix, and the die cavity has had remaining air in the mould of having alleviated existence among the prior art, influences the technical problem of the wax matrix quality after the shaping, has realized the technological effect who improves wax matrix shaping quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described 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 cross-sectional view of an overall structure of a forming mold according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an air suction opening in a forming mold according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a wax injection loose piece in a forming mold according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a lower mold in a forming mold provided by an embodiment of the present invention.
Icon: 100-a mold body; 110-upper mold; 111-gas flow channel; 120-lower mold; 130-a molding chamber; 200-an extraction opening; 300-a first seal; 400-wax injection loose piece; 500-second seal.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
As shown in fig. 1 and fig. 2, the forming mold provided in this embodiment includes: a mold body 100; a molding chamber 130 is provided in the mold body 100; the mold body 100 is provided with a pumping hole 200, the pumping hole 200 is communicated with the molding chamber 130, and the pumping hole 200 is configured to be able to discharge the gas in the molding chamber 130 so that the molding chamber 130 is in a vacuum state.
Specifically, a forming cavity 130 is arranged in a mold main body 100, wax materials can enter the forming cavity 130, the wax materials are formed in the forming cavity 130, an air suction opening 200 is formed in the mold main body 100, before the wax materials are formed, air in the forming cavity 130 is discharged from the air suction opening 200, the forming cavity 130 is in a vacuum state, the wax materials enter the forming cavity 130 in the vacuum state, and in the wax material forming process, because residual air does not exist in the forming cavity 130, flow marks and bubbles on the surface of a wax mold can not be generated due to the residual air, and wax mold forming quality is provided.
The embodiment provides a forming die, includes: a mold body 100; a molding chamber 130 is provided in the mold body 100; the mold body 100 is provided with a pumping hole 200, the pumping hole 200 is communicated with the molding chamber 130, and the pumping hole 200 is configured to be able to discharge the gas in the molding chamber 130 so that the molding chamber 130 is in a vacuum state. Through set up extraction opening 200 on mould main part 100, the gas in the shaping cavity 130 in the mould main part 100 is discharged through extraction opening 200, makes shaping cavity 130 be the vacuum state, effectively prevents gaseous shaping quality that influences the wax matrix, and the die cavity has remained air in the mould of having alleviated existence among the prior art, influences the technical problem of the wax matrix quality after the shaping, has realized the technological effect who improves wax matrix shaping quality.
On the basis of the above embodiment, in an alternative implementation manner, the mold main body 100 in the forming mold provided by the present embodiment includes an upper mold 110 and a lower mold 120; the upper mold 110 covers the lower mold 120 to form a molding cavity 130; a gas flow passage 111 is provided in the upper mold 110, and the gas in the molding chamber 130 is exhausted from the pumping ports 200 along the gas flow passage 111.
Specifically, the upper mold 110 is covered on the lower mold 120, the upper mold 110 and the lower mold 120 are both provided with cavities, when the upper mold 110 and the lower mold 120 are covered, the cavities of the upper mold 110 and the lower mold 120 form a molding chamber 130, a gas flow passage 111 is arranged in the upper mold 110, the gas flow passage 111 is communicated with the pumping hole 200, and gas in the molding chamber 130 can flow into the pumping hole 200 along the gas flow passage 111 and is finally discharged from the pumping hole 200.
In an alternative embodiment, there is a gap between the upper mold 110 and the lower mold 120, and the gas in the molding chamber 130 enters into the gas flow channel 111 along the gap.
Specifically, when the upper mold 110 and the lower mold 120 are closed, a gap is left between the upper mold 110 and the lower mold 120, the gas in the molding chamber 130 enters the gas flow passage 111 through the gap between the upper mold 110 and the lower mold 120, the gas in the gas flow passage 111 flows to the gas exhaust port 200 and is exhausted from the gas exhaust port 200, and the molding chamber 130 is in a vacuum state.
According to the forming die provided by the embodiment, the gas flow passage 111 is arranged in the upper die 110, and meanwhile, a gap is reserved between the upper die 110 and the lower die 120, so that gas in the forming cavity 130 passes through the gap, the gas flow passage 111 and the pumping hole 200 in sequence and is finally discharged from the pumping hole 200, so that no gas is in the forming cavity 130, and the residual gas is effectively prevented from influencing the wax material forming quality.
On the basis of the above embodiment, as shown in fig. 4, in an alternative embodiment, the forming mold provided by this embodiment further includes a first sealing member 300; a groove is provided at a side of the lower mold 120 adjacent to the upper mold 110, and a first sealing member 300 is provided in the groove, the first sealing member 300 being configured to prevent external air from entering the molding chamber 130 through a gap.
Specifically, a groove is formed in one side of the lower die 120, which is close to the upper die 110, the first sealing element 300 is arranged in the groove, the first sealing element 300 is specifically set as a sealing ring, after the upper die 110 is covered on the lower die 120, the first sealing element 300 is positioned in a gap between the upper die 110 and the lower die 120, so that external gas cannot enter the forming cavity 130 through the gap between the upper die 110 and the lower die 120, and the external gas is prevented from entering the forming cavity 130 through the gap in the vacuumizing process.
In an alternative embodiment, the gap has a dimension of 0.1 to 0.3 mm.
Specifically, the size of the gap between the upper mold 110 and the lower mold 120 is 0.1-0.3 mm, and preferably, the gap between the upper mold 110 and the lower mold 120 is 0.1 mm.
In an alternative embodiment, as shown in fig. 3, the forming die further comprises a wax injection loose piece 400; the wax injection loose piece 400 is disposed in the lower mold 120, a wax injection passage is disposed in the wax injection loose piece 400, and the wax injection loose piece 400 is configured to enable wax to enter the molding cavity 130 through the wax injection passage.
Specifically, after the upper mold 110 is covered on the lower mold 120, the wax injection loose piece 400 is placed into the lower mold 120, a wax injection channel is formed in the wax injection loose piece 400, the wax injection channel is communicated with the molding cavity 130, and wax enters the molding cavity 130 through the wax injection channel so as to be molded in the molding cavity 130.
In an alternative embodiment, a fixing groove for receiving the wax injection loose piece 400 is provided in the lower mold 120.
Specifically, set up the fixed slot in the lower mould 120, the fixed slot can hold notes wax loose piece 400, makes notes wax loose piece 400 fix in the fixed slot, and the stability of feeding is guaranteed to the fixed position of annotating wax loose piece 400.
In an alternative embodiment, the forming die further comprises a second seal 500; the second sealing member 500 is disposed in the fixing groove, and the second sealing member 500 abuts against the wax injection loose piece 400, and the second sealing member 500 is configured to prevent the gas in the fixing groove from entering the molding chamber 130.
Specifically, second sealing member 500 is placed in the fixed slot, and second sealing member 500 is located the one end that notes wax loose piece 400 is close to forming chamber 130, second sealing member 500 and notes wax loose piece 400 butt, second sealing member 500 specifically sets up to the sealing washer, will annotate that the space between wax loose piece 400 and the bed die 120 is filled up, avoid advancing the in-process of wax, the air enters into forming chamber 130 along annotating the space of wax passageway between notes wax loose piece 400 and the bed die 120, prevent at the in-process of annotating the wax, the air enters into forming chamber 130, influence final shaping quality.
In an alternative embodiment, the mold body 100 is provided with threads at the location of the suction opening 200.
Specifically, the screw thread is arranged at the air pumping hole 200 and connected with the vacuum pump connector, so that the sealing performance of the vacuum pump connector and the air pumping hole 200 is ensured, and the phenomenon that air enters the forming cavity 130 from the air pumping hole 200 to affect the forming quality is avoided.
The molding die provided by the present embodiment seals between the upper die 110 and the lower die 120 by the first sealing member 300 by providing the first sealing member 300 on the side of the lower die 120 close to the upper die 110, so as to prevent outside air from entering the molding chamber 130 through the gap between the upper die 110 and the lower die 120; through set up second sealing member 500 in the fixed slot of bed die 120, utilize second sealing member 500 to reduce the clearance between notes wax loose piece 400 and bed die 120, prevent that the outside air from entering into in the molding cavity 130 along the clearance between notes wax loose piece 400 and the bed die 120 at the in-process of annotating the wax, effectively improve shaping quality.
The method for molding the casting wax mold provided by the embodiment comprises the following steps: mounting the first sealing member 300 in the groove of the lower mold 120; mounting the second sealing member 500 on the wax injection loose piece 400; the wax injection loose piece 400 with the second sealing member 500 is installed in the fixing groove of the lower mold 120; the upper mold 110 and the lower mold 120 are clamped.
Specifically, an appropriate amount of mold release agent is coated on the upper mold 110 and the lower mold 120 respectively, the first sealing element 300 is installed in a groove on one side of the lower mold 120 close to the upper mold 110, the second sealing element 500 is fixedly installed on the wax injection loose piece 400, then the wax injection loose piece 400 with the second sealing element 500 is installed on the lower mold 120, it is ensured that gas cannot enter the molding cavity 130 from a gap between the wax injection loose piece 400 and the lower mold 120, and the upper mold 110 is covered on the lower mold 120 after installation, so as to form the molding cavity 130.
In an alternative embodiment, the method further comprises the following steps: connecting a vacuum pump with the pumping port 200; assembling the lower mold 120 into a wax press; turning on the vacuum pump, and pumping out the gas in the molding chamber 130 to make the molding chamber 130 in a vacuum state; the wax injector is turned on and the wax material enters the forming chamber 130 for forming.
Specifically, a joint of a vacuum pump is installed on the air suction port 200, the vacuum pump is opened after the installation is finished, air in the molding cavity 130 is sucked out, the wax pressing machine and the lower die 120 are assembled, the wax pressing machine is started, so that wax materials generated by the wax pressing machine enter the molding cavity 130 along the wax injection loose piece 400, after the wax injection is finished, the vacuum pump is turned off, the joint of the vacuum pump is separated from the air suction port 200, the upper die 110 and the lower die 120 are opened, and the molded wax piece is taken out.
According to the molding method of the casting wax pattern provided by the embodiment, the gas in the molding cavity 130 is pumped out through the vacuum pump, so that no residual air exists in the molding cavity 130, and the influence of the air on the molding quality of the wax pattern is avoided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. A molding die, comprising: a mold body (100);
a forming cavity (130) is arranged in the die main body (100);
the mould main body (100) is provided with a pumping hole (200), the pumping hole (200) is communicated with the forming cavity (130), and the pumping hole (200) is configured to be capable of exhausting gas in the forming cavity (130) so as to enable the forming cavity (130) to be in a vacuum state; the mold body (100) includes an upper mold (110) and a lower mold (120);
the upper die (110) covers the lower die (120) to form the forming cavity (130);
a gas flow passage (111) is arranged in the upper die (110), and gas in the forming cavity (130) is exhausted from the pumping hole (200) along the gas flow passage (111);
a gap is provided between the upper mold (110) and the lower mold (120), and the gas in the molding chamber (130) enters into the gas flow channel (111) along the gap.
2. The molding die according to claim 1,
the forming die further comprises a first seal (300);
a groove is formed in one side, close to the upper die (110), of the lower die (120), a first sealing piece (300) is arranged in the groove, and the first sealing piece (300) is configured to prevent outside air from entering the forming cavity (130) through the gap.
3. The molding die according to claim 1,
the molding die further comprises a wax injection loose piece (400);
the wax injection loose piece (400) is arranged in the lower die (120), a wax injection channel is arranged in the wax injection loose piece (400), and the wax injection loose piece (400) is configured to enable wax materials to enter the forming cavity (130) through the wax injection channel.
4. The molding die according to claim 3,
and a fixing groove for accommodating the wax injection loose piece (400) is arranged in the lower die (120).
5. The molding die according to claim 4,
the forming die further comprises a second seal (500);
the second sealing element (500) is arranged in the fixing groove, the second sealing element (500) abuts against the wax injection loose piece (400), and the second sealing element (500) is configured to prevent gas in the fixing groove from entering the forming chamber (130).
6. The molding die according to claim 1,
the die main body (100) is provided with threads at the position of the extraction opening (200).
7. The molding die according to claim 5,
the second seal (500) is configured as a seal ring.
8. The molding die according to claim 1,
the size of the gap is 0.1-0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020378177.6U CN211990814U (en) | 2020-03-23 | 2020-03-23 | Forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020378177.6U CN211990814U (en) | 2020-03-23 | 2020-03-23 | Forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211990814U true CN211990814U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020378177.6U Active CN211990814U (en) | 2020-03-23 | 2020-03-23 | Forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211990814U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238006A (en) * | 2021-05-13 | 2021-08-10 | 上海交通大学 | Mold and method for measuring shrinkage rate of wax material and application |
-
2020
- 2020-03-23 CN CN202020378177.6U patent/CN211990814U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238006A (en) * | 2021-05-13 | 2021-08-10 | 上海交通大学 | Mold and method for measuring shrinkage rate of wax material and application |
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