Flat plate type casting casting head structure based on gypsum mold precision casting method and mold of flat plate type casting casting head structure

Abstract

The utility model discloses a flat plate type casting casting head structure based on a gypsum mold precision casting method and a mold thereof, the casting head structure comprises a middle frame, the upper surface and the lower surface of the middle frame are both provided with gypsum chambers, and the gypsum chambers are distributed along the same plane array; the gypsum chambers on the upper surface of the middle frame correspond to the gypsum chambers on the lower surface of the middle frame in position one to one, and casting head female holes are formed between the gypsum chambers on the upper surface and the corresponding gypsum chambers on the lower surface. The casting head structure is composed of a small amount of gypsum and the middle frame and is high in strength and rigidity, the gypsum connected into a whole is not prone to fragmentation after being roasted, demolding is easy, and cost is saved.

Description

Technical Field

[0001] The utility model relates to a flat casting pouring and rising head structure and a mold thereof based on a gypsum mold precision casting method, and belongs to the technical field of casting equipment. Background Art

[0002] Gypsum mold precision casting is a process of fixing, embedding, solidifying and baking the investment mold into a plaster mold, assembling the plaster mold with a pouring riser and a pouring system, and then pouring to obtain a casting. The pouring riser and the plaster mold cavity constitute the path for the metal solution to be poured and filled. The plaster mold cavity determines the shape of the casting, and the pouring riser affects the effect and quality of the pouring and plays many other roles.

[0003] At present, for flat castings, the commonly used molds formed by gypsum mold precision casting are as follows Figure 1 As shown, it consists of a riser structure at the top, a gypsum mold in the middle, and a gate structure at the bottom. The gypsum mold is formed by embedding the investment mold with gypsum. In order to fully pour, the riser structure usually has straight holes arranged regularly. In order to facilitate demoulding later, the riser structure is filled with gypsum. When in use, the riser and the gypsum mold need to be assembled together to form a casting mold. However, this structure has the following disadvantages: first, the pouring and riser structure is composed of gypsum, which has relatively weak strength and rigidity and is easy to break during roasting. Gypsum fragments fall and block the gypsum cavity, causing pouring failure; second, if the flat-plate casting is large, the amount of gypsum used in the pouring and riser structure is large, and the gypsum is disposable, so the cost is high; finally, after the pouring is completed, the mold needs to be cooled. The cooling after pouring determines the fineness of the metal lattice in the blank. The more immediate the cooling, the finer the grains, thereby obtaining better metal properties. However, the gypsum in the prior art has poor heat dissipation capacity, resulting in the casting blank not being cooled in time in the mold, and the casting performance is poor.

[0004] In view of the above shortcomings, the utility model proposes a flat casting pouring and riser structure and a mold thereof based on a gypsum mold precision casting method. Utility Model Content

[0005] The purpose of the utility model is to provide a flat-plate casting riser structure based on a gypsum mold precision casting method, and a flat-plate casting riser structure mold based on a gypsum mold precision casting method, which have high strength and rigidity, can be reused, save costs, and can be quickly cooled after pouring, thereby refining the grains and obtaining better metal properties for the casting blank.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: a flat casting pouring and riser structure based on a gypsum mold precision casting method, including a middle frame, the middle frame is made of metal material, which can be but not limited to metal steel, and the upper and lower surfaces of the middle frame are provided with gypsum chambers, the gypsum chambers are distributed along the same plane array, arranged in a rectangular shape, and the gypsum chambers on the upper surface of the middle frame correspond to the gypsum chambers on the lower surface in one-to-one position, and a pouring and riser mother hole is provided between the corresponding gypsum chambers on the upper surface and the gypsum chambers on the lower surface, gypsum is embedded in the gypsum chambers and the pouring and riser mother holes, and a pouring and riser channel is formed in the cavity formed by the corresponding gypsum chambers and the pouring and riser mother holes through gypsum embedding, that is, the gypsum chambers on both sides are connected through the middle pouring and riser mother hole to form each relatively independent part, and a hollow channel is formed in the middle of the relatively independent part when the gypsum is embedded, forming a pouring and riser channel.

[0007] The aforementioned flat-plate casting pouring and riser structure based on the gypsum mold precision casting method, the side wall of the middle frame is crisscrossed with connecting holes, two longitudinally or laterally adjacent pouring and riser mother holes are connected by the connecting holes, the gypsum chambers on both sides are connected by the middle pouring and riser mother holes to form each relatively independent part, and multiple relatively independent parts are connected to each other through the connecting holes, and the connecting holes run through the entire middle frame.

[0008] The above-mentioned flat-plate casting pouring and riser structure based on the gypsum mold precision casting method has a cooling pipe penetrating the side wall of the middle frame. The cooling pipe is not in contact with the gypsum chamber, the pouring and riser mother hole, and the connecting hole. The cooling medium is used for cooling in the cooling pipe.

[0009] The aforementioned flat-plate casting pouring and riser structure based on the gypsum mold precision casting method has frames arranged around the upper and lower side surfaces of the middle frame, and criss-crossing ribs are arranged inside the frames. The ribs are distributed between adjacent gypsum chambers. The frames around and the internal crisscrossing ribs form a raised portion, which together surrounds and isolates the gypsum chambers, and the surfaces of the frames and ribs are flat.

[0010] In the aforementioned flat-plate casting pouring and riser structure based on the gypsum mold precision casting method, the gypsum chamber is funnel-shaped.

[0011] A mold for a flat-plate casting pouring and riser structure based on a gypsum mold precision casting method comprises a web and a back plate, wherein the web is installed on the lower side of a middle frame, and the back plate is arranged on the upper side of the middle frame. A column head is arranged on the upper surface of the web, and the column head passes through a pouring and riser mother hole and extends to the surface of the back plate. A gypsum pouring gate is passed through the upper surface of the back plate, and the arrangement pattern and number of the column heads are concentric and completely consistent with the pouring and riser mother hole of the middle frame.

[0012] The aforementioned mold of the flat-plate casting pouring and riser structure based on the gypsum mold precision casting method also includes a connecting frame, which is arranged between the middle frame and the back plate.

[0013] The aforementioned mold of the flat-plate casting pouring and riser structure based on the gypsum mold precision casting method, the column head includes a frustum and a conical head, the frustum is embedded and fixed on the upper surface of the web, the large diameter end of the conical head is fixed on the frustum, the small diameter end of the conical head passes through the pouring and riser mother hole and extends to the back plate surface, and there is a spacing space between the conical head and the side wall of the pouring and riser mother hole, which can form an inner conical hole gypsum channel.

[0014] Compared with the prior art, the utility model has at least the following beneficial effects:

[0015] (1) The pouring and riser structure of the utility model is composed of a small amount of gypsum and a middle frame, and has high strength and rigidity. The gypsum connected as a whole is not easy to break after baking, and it is easy to demould.

[0016] (2) The overall structure of the utility model greatly saves the amount of gypsum, and the middle frame can be reused, which greatly saves costs during mass production.

[0017] (3) The utility model is provided with a cooling pipe structure, and a cooling medium is used in the cooling pipe for cooling, so that the temperature of the entire casting mold can be rapidly reduced, thereby refining the grains and obtaining better metal properties for the casting blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a gypsum-type precision casting molding die in the prior art;

[0019] Figure 2 This is a schematic diagram of the middle frame structure of the utility model;

[0020] Figure 3 It is a cross-sectional view of the middle frame structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the mold installation structure of the utility model;

[0022] Figure 5 This is an exploded view of the mold installation structure of the utility model;

[0023] Figure 6 It is a schematic diagram of the column head structure of the utility model.

[0024] Figure numerals: 1-middle frame, 2-gypsum chamber, 3-casting and riser mother hole, 4-connecting hole, 5-cooling pipe, 6-frame, 7-rib, 8-web, 9-back plate, 10-column, 11-gypsum gate, 12-connecting frame, 13-truncated cone, 14-conical head.

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. DETAILED DESCRIPTION

[0026] It should be pointed out that for the convenience of description, if the words "up", "down", "left" and "right" appear in this application, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0027] Embodiment 1 of the utility model: A flat-plate casting pouring and riser structure based on a gypsum mold precision casting method comprises a middle frame 1, which is made of metal material and is finely carved from a whole steel plate. Gypsum chambers 2 are provided on the upper and lower surfaces of the middle frame 1, and the gypsum chambers 2 are arranged in an array along the same plane in a rectangular arrangement. The positions of the gypsum chambers 2 on the upper surface of the middle frame 1 correspond to those of the gypsum chambers 2 on the lower surface. A pouring and riser mother hole 3 is provided between the corresponding upper surface gypsum chambers 2 and the lower surface gypsum chambers 2. A pouring and riser channel is formed by plaster embedding in the corresponding cavity formed by the gypsum chambers 2 and the pouring and riser mother hole 3. Gypsum is embedded in the gypsum chambers 2 and the pouring and riser mother hole 3. The gypsum chambers 2 on both sides are connected by the middle pouring and riser mother hole 3 to form each relatively independent part, and the relatively independent parts are formed into a hollow channel by plaster embedding to constitute a pouring and riser channel.

[0028] The middle frame 1 and the cast plaster form a pouring riser structure, which has strong strength and rigidity, and the integrated plaster is not easy to break after baking. If all steel metal structures are used, there will be internal stress between the casting and the pouring riser metal structure due to the shrinkage of the casting, and the pouring riser structure is difficult to demold. Therefore, the pouring riser structure composed of the middle frame 1 and the cast plaster takes into account both the structural strength and the difficulty of demolding.

[0029] Embodiment 2 of the present utility model: A flat-plate casting pouring and riser structure based on a gypsum mold precision casting method includes a middle frame 1, which is made of metal material and is finely carved from a whole piece of steel plate. Gypsum chambers 2 are opened on the upper and lower surfaces of the middle frame 1, and the gypsum chambers 2 are distributed along the same plane array in a rectangular arrangement. The positions of the gypsum chambers 2 on the upper surface of the middle frame 1 correspond to those of the gypsum chambers 2 on the lower surface. A pouring and riser mother hole 3 is provided between the corresponding upper surface gypsum chambers 2 and the lower surface gypsum chambers 2. A pouring and riser channel is formed by plaster embedding in the corresponding cavity formed by the gypsum chambers 2 and the pouring and riser mother hole 3. Gypsum is embedded in the gypsum chambers 2 and the pouring and riser mother hole 3. The gypsum chambers 2 on both sides are connected by the middle pouring and riser mother hole 3 to form each relatively independent part, and the relatively independent parts are formed into a hollow channel by plaster embedding to constitute a pouring and riser channel.

[0030] The side walls of the middle frame 1 are crisscrossed with connecting holes 4, and two longitudinally or transversely adjacent pouring and riser mother holes 3 are connected through the connecting holes 4, and the gypsum chambers 2 on both sides are connected through the middle pouring and riser mother holes 3 to form each relatively independent part, and multiple relatively independent parts are connected to each other through the connecting holes 4, and the connecting holes 4 run through the entire middle frame 1.

[0031] Embodiment 3 of the present utility model: A flat casting pouring and riser structure based on a gypsum mold precision casting method includes a middle frame 1, which is made of metal material and is finely carved from a whole steel plate. Gypsum chambers 2 are provided on the upper and lower surfaces of the middle frame 1. The gypsum chambers 2 are arranged in an array along the same plane in a rectangular arrangement, and the positions of the gypsum chambers 2 on the upper surface of the middle frame 1 correspond to the gypsum chambers 2 on the lower surface. A pouring and riser mother hole 3 is provided between the corresponding upper surface gypsum chambers 2 and the lower surface gypsum chambers 2. A pouring and riser channel is formed by plaster embedding in the corresponding cavity formed by the gypsum chambers 2 and the pouring and riser mother hole 3. Gypsum is embedded in the gypsum chambers 2 and the pouring and riser mother hole 3. The gypsum chambers 2 on both sides are connected by the middle pouring and riser mother hole 3 to form each relatively independent part, and the relatively independent parts are formed into a hollow channel by plaster embedding to constitute a pouring and riser channel.

[0032] Among them, the side walls of the middle frame 1 are crisscrossed with connecting holes 4, two longitudinally or transversely adjacent pouring and riser mother holes 3 are connected through the connecting holes 4, the gypsum chambers 2 on both sides are connected through the middle pouring and riser mother holes 3 to form each relatively independent part, and multiple relatively independent parts are connected to each other through the connecting holes 4, and the connecting holes 4 run through the entire middle frame 1; a cooling pipe 5 is run through the side wall of the middle frame 1, and the cooling pipe 5 is not in contact with the gypsum chamber 2, the pouring and riser mother holes 3, and the connecting holes 4. A cooling medium is used for cooling in the cooling pipe 5, and the design idea of ​​the cooling pipe 5 is to first drill a through hole in the middle frame 1, and then place the cooling pipe 5 therein.

[0033] Embodiment 4 of the present utility model: A flat casting pouring and riser structure based on a gypsum mold precision casting method, comprising a middle frame 1, the middle frame 1 is made of metal material, and is finely carved from a whole steel plate. The upper and lower surfaces of the middle frame 1 are provided with gypsum chambers 2, and the gypsum chambers 2 are funnel-shaped. The gypsum chambers 2 are arranged in an array along the same plane and are arranged in a rectangular shape. Frames 6 are arranged around the upper and lower surfaces of the middle frame 1, and criss-cross ribs 7 are arranged inside the frame 6. The ribs 7 are distributed between adjacent gypsum chambers 2. The frames 6 around and the internally staggered ribs 7 form a raised portion, which together surrounds and isolates The surfaces of the gypsum chamber 2, the frame 6 and the rib 7 are flat; the positions of the gypsum chamber 2 on the upper surface of the middle frame 1 correspond to those of the gypsum chamber 2 on the lower surface, and a pouring and riser mother hole 3 is provided between the corresponding upper surface gypsum chamber 2 and the lower surface gypsum chamber 2. A pouring and riser channel is formed by plaster embedding in the cavity formed by the corresponding gypsum chamber 2 and the pouring and riser mother hole 3. Gypsum is embedded in the gypsum chamber 2 and the pouring and riser mother hole 3. The gypsum chambers 2 on both sides are connected through the middle pouring and riser mother hole 3 to form each relatively independent part, and the relatively independent parts are formed into a hollow channel by plaster embedding to constitute a pouring and riser channel.

[0034] Among them, the side walls of the middle frame 1 are crisscrossed with connecting holes 4, two longitudinally or transversely adjacent pouring and riser mother holes 3 are connected through the connecting holes 4, the gypsum chambers 2 on both sides are connected through the middle pouring and riser mother holes 3 to form each relatively independent part, and multiple relatively independent parts are connected to each other through the connecting holes 4, and the connecting holes 4 run through the entire middle frame 1; a cooling pipe 5 is run through the side wall of the middle frame 1, and the cooling pipe 5 is not in contact with the gypsum chamber 2, the pouring and riser mother holes 3, and the connecting holes 4. A cooling medium is used for cooling in the cooling pipe 5, and the design idea of ​​the cooling pipe 5 is to first drill a through hole in the middle frame 1, and then place the cooling pipe 5 therein.

[0035] Embodiment 5 of the present utility model: A mold of a flat casting pouring and riser structure based on a gypsum mold precision casting method, comprising a web 8 and a back plate 9, wherein the web 8 is mounted on the lower side of the middle frame 1, and the back plate 9 is arranged on the upper side of the middle frame 1. The sides of the web 8 and the back plate 9 contacting the middle frame 1 are all flat, so that the web 8 and the back plate 9 are closely fitted to the middle frame 1. A column head 10 is arranged on the upper surface of the web 8, and the column head 10 passes through the pouring and riser mother hole 3 and extends to the surface of the back plate 9. A gypsum pouring gate 11 is arranged on the upper surface of the back plate 9, and the arrangement of the column head 10 is as follows: The pattern and number are concentric and completely consistent with the pouring and riser mother hole 3 of the middle frame 1, and also include a connecting frame 12, which is arranged between the middle frame 1 and the back plate 9; the column head 10 includes a truncated cone 13 and a conical head 14, the truncated cone 13 is embedded and fixed on the upper surface of the web 8, the large diameter end of the conical head 14 is fixed on the truncated cone 13, the small diameter end of the conical head 14 passes through the pouring and riser mother hole 3 and extends to the surface of the back plate 9, and there is a spacing space between the conical head 14 and the side wall of the pouring and riser mother hole 3, and this spacing space forms an inner conical hole gypsum channel after embedding.

[0036] When using the mold for embedding, gypsum enters from the gypsum pouring port 11. The function of the connecting frame 12 is to form a buffer space between the middle frame 1 and the back plate 9, also known as a "gypsum pouring channel". The gypsum is collected here and flows into the gypsum cavity composed of the gypsum chamber 2 and the pouring and riser mother hole 3 on the middle frame 1. The middle of the cavity formed by the gypsum chamber 2 on both sides and the corresponding pouring and riser mother hole 3 will be occupied by the column head 10. There is a spacing between the side walls of the pouring and riser mother hole 3. A pouring and riser channel is formed after the gypsum is embedded. When the gypsum solidifies, the mold is removed to obtain the required pouring and riser structure.

[0037] The working principle of an embodiment of the utility model is as follows: when in use, after the middle frame 1, the web 8 and the back plate 9 are assembled and assembled, they are embedded, and the gypsum is poured from the gypsum pouring port 11, so that the gypsum enters the buffer space between the middle frame 1 and the back plate 9, and the gypsum is collected here and flows into the filling gypsum cavity. After the gypsum solidifies, the mold is removed to obtain the required pouring head structure. The pouring head structure after embedding is composed of a small amount of gypsum and the middle frame 1, and has strong strength and rigidity. The integrated gypsum is not easy to break after roasting, and it is easy to demold, which greatly saves the amount of gypsum, and the middle frame 1 can be reused, which saves costs in mass production. After pouring, the cooling medium is used in the cooling pipe 5 to cool the pouring head structure, so that the temperature of the entire casting mold drops rapidly, thereby refining the grains, and the casting blank obtains better metal properties.

Claims

1. A flat casting riser structure based on a gypsum mold precision casting method, characterized in that: The invention comprises a middle frame (1), wherein the upper and lower surfaces of the middle frame (1) are both provided with gypsum chambers (2), the gypsum chambers (2) are arranged in an array along the same plane, and the positions of the gypsum chambers (2) on the upper surface of the middle frame (1) correspond to the positions of the gypsum chambers (2) on the lower surface, and a pouring and riser mother hole (3) is provided between the corresponding gypsum chambers (2) on the upper surface and the corresponding gypsum chambers (2) on the lower surface, gypsum is embedded in the gypsum chambers (2) and the pouring and riser mother hole (3), and a pouring and riser channel is formed in the cavity formed by the corresponding gypsum chambers (2) and the pouring and riser mother hole (3) through the gypsum embedding.

2. The flat plate casting riser structure based on the gypsum mold precision casting method according to claim 1 is characterized in that: The side wall of the middle frame (1) is provided with connecting holes (4) in a crisscross pattern, and two longitudinally or transversely adjacent pouring and riser mother holes (3) are connected via the connecting holes (4).

3. The flat plate casting riser structure based on the gypsum mold precision casting method according to claim 2 is characterized in that: A cooling pipe (5) is provided through the side wall of the middle frame (1); the cooling pipe (5) is not in contact with the gypsum chamber (2), the pouring and riser mother hole (3), and the connecting hole (4).

4. The flat plate casting riser structure based on the gypsum mold precision casting method according to claim 3 is characterized in that: Frames (6) are arranged around the upper and lower surfaces of the middle frame (1), and crisscross ribs (7) are arranged inside the frame (6). The ribs (7) are distributed between adjacent gypsum chambers (2).

5. The flat plate casting riser structure based on the gypsum mold precision casting method according to claim 4 is characterized in that: The gypsum chamber (2) is funnel-shaped.

6. The mold of the flat plate casting riser structure based on the gypsum mold precision casting method according to any one of claims 1 to 5, characterized in that: The invention comprises a web (8) and a back plate (9), wherein the web (8) is mounted on the lower side of the middle frame (1), and the back plate (9) is arranged on the upper side of the middle frame (1). A column head (10) is arranged on the upper surface of the web (8), and the column head (10) passes through a pouring and riser mother hole (3) and extends to the surface of the back plate (9). A gypsum pouring port (11) is arranged on the upper surface of the back plate (9).

7. The mold of the flat plate casting riser structure based on the gypsum mold precision casting method according to claim 6 is characterized in that: It also comprises a connection frame (12), wherein the connection frame (12) is arranged between the middle frame (1) and the back plate (9).

8. The mold of the flat plate casting riser structure based on the gypsum mold precision casting method according to claim 7, characterized in that: The column head (10) comprises a truncated cone (13) and a conical head (14); the truncated cone (13) is embedded and fixed on the upper surface of the web (8); the large diameter end of the conical head (14) is fixed on the truncated cone (13); the small diameter end of the conical head (14) passes through the pouring and riser mother hole (3) and extends to the surface of the back plate (9); and there is a spacing space between the conical head (14) and the side wall of the pouring and riser mother hole (3).

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