Wear-resistant head stack casting sand mold and sand mold casting mold

Abstract

The utility model discloses a wear-resistant head stack casting sand mold and a sand mold casting mold, and belongs to the field of casting molds. The wear-resistant head casting sand mold comprises a sand mold base and a sand mold main body which are sequentially arranged from bottom to top, the sand mold main body comprises a plurality of casting sand molds which are sequentially arranged from bottom to top, a base pouring gate is arranged in the sand mold base, and a base pouring gate is arranged in the base pouring gate. A wear-resistant head cavity, a first main pouring gate and a first split vertical pouring gate are arranged on the pouring sand mold, the first main pouring gate is communicated with the base pouring gate, the base pouring gate is communicated with the first split vertical pouring gate, and the first split vertical pouring gate is communicated with the wear-resistant head cavity. The wear-resistant head stacked casting sand mold can be used for casting a plurality of wear-resistant heads at one time.

Description

Technical Field

[0001] This utility model belongs to the field of casting molds, and in particular relates to a wear-resistant head stacked sand mold and a sand casting mold. Background Technology

[0002] Wear-resistant heads are used to protect valuable mining equipment from excessive wear. They are made of high-chromium cast iron, with a carbon content of 4%-4.5% and a chromium content of 27%-30%, requiring a hardness of HRC 55-60. The structure of the wear-resistant head is as follows: Figure 1 and Figure 2 As shown, the wear-resistant head requires a smooth outer circle without defects such as burrs. Due to the small size of the product, it is difficult to mass-produce the product by single-piece molding and casting, and the grinding work is extensive, resulting in low production efficiency. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a sand mold for stacking wear-resistant heads and a sand casting mold, which can produce multiple wear-resistant heads at one time.

[0004] This utility model is achieved through the following technical solution:

[0005] The first aspect of this utility model discloses a wear-resistant head stacked sand mold, including a sand mold base and a sand mold body arranged sequentially from bottom to top. The sand mold body includes a plurality of casting sand molds arranged sequentially from bottom to top. The sand mold base is provided with a base gating channel. The casting sand mold is provided with a wear-resistant head cavity, a first main gating channel and a first split vertical gating channel. The first main gating channel is connected to the base gating channel, the base gating channel is connected to the first split vertical gating channel, and the first split vertical gating channel is connected to the wear-resistant head cavity.

[0006] Furthermore, the upper surface of the casting sand mold is provided with a positioning concave surface and a positioning post, the lower surface of the casting sand mold is provided with a positioning convex surface adapted to the positioning concave surface, the lower surface of the casting sand mold is provided with a first positioning hole adapted to the positioning post, the positioning post is located directly above the first positioning hole, and the positioning concave surface is located directly above the positioning convex surface.

[0007] Furthermore, a riser is connected to the top of the first split vertical runner of the uppermost casting sand mold, and a pouring cup is connected to the top of the first main runner of the uppermost casting sand mold.

[0008] Furthermore, the wear-resistant head cavity includes a wear-resistant upper body cavity and a wear-resistant lower body cavity. The upper surface of the casting sand mold is provided with the wear-resistant lower body cavity, and the lower surface of the casting sand mold is provided with the wear-resistant upper body cavity. The wear-resistant lower body cavity on the casting sand mold is located directly above the wear-resistant upper body cavity, and the wear-resistant upper body cavity is connected to the first split vertical runner.

[0009] Furthermore, the upper surface of the sand mold base is provided with a wear-resistant head lower body cavity, a positioning concave surface, and a positioning post.

[0010] Furthermore, the base gating system includes a second main gating system and a second split vertical gating system, wherein the second main gating system is connected to the second split vertical gating system.

[0011] The second aspect of this utility model discloses a sand casting mold, including an upper mold body and a lower mold body, wherein the upper mold body and the lower mold body cooperate to form a mold cavity for injection molding of a sand casting mold as described in the first aspect of this utility model.

[0012] Furthermore, both the upper mold body and the lower mold body are provided with positioning grooves on the same side, and the positioning grooves of the upper mold body and the lower mold body are combined to form a second positioning hole.

[0013] Furthermore, the upper mold body is provided with heating holes, mold mounting holes and sand injection ports.

[0014] Furthermore, the lower mold body is provided with a heating hole, a mold mounting hole, a third positioning hole and a top mold hole, wherein the third positioning hole and the top mold hole are located on the side of the lower mold body away from the upper mold body.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects: This utility model provides a stacked sand mold for wear-resistant heads. The sand mold base of the stacked sand mold for wear-resistant heads is provided with a second main gating channel and multiple second split vertical gating channels. The upper surface of the sand mold base is provided with a lower cavity for the wear-resistant head. The casting sand mold is placed on the sand mold base. Multiple casting sand molds are stacked sequentially from bottom to top to form the main body of the sand mold. The cavity between two casting sand molds is combined to form a multi-layered cavity for the wear-resistant head. The molten metal enters from the pouring cup through the first main gating channel in the casting sand mold into the second main gating channel in the sand mold base, and then enters the first split vertical gating channel through the second split vertical gating channel. The molten iron rises steadily in the first split vertical gating channel and fills the cavity for the wear-resistant head. The small wear-resistant head cools and solidifies first and is replenished by the high-temperature liquid in the casting system to complete the casting and molding of multiple wear-resistant heads. Thus, multiple wear-resistant heads can be cast and produced at one time, which greatly improves the material utilization rate and production efficiency, while improving the product precision level, reducing grinding time, and reducing labor intensity and production costs. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 A top view of a wear-resistant head;

[0018] Figure 2 This is a cross-sectional view and parting diagram of the casting process for the wear-resistant head;

[0019] Figure 3 This is a schematic diagram of the structure of a sand mold body;

[0020] Figure 4 A top view of a sand casting mold;

[0021] Figure 5 for Figure 4 A cross-sectional view at point YY;

[0022] Figure 6 A bottom view of a sand casting mold;

[0023] Figure 7 A schematic diagram of a three-dimensional structure for casting sand molds;

[0024] Figure 8 A three-dimensional structural diagram of the base gating system in a sand mold base;

[0025] Figure 9 This is a side sectional view of the main body of the sand mold;

[0026] Figure 10 A schematic diagram of a three-dimensional structure of a sand-shaped base;

[0027] Figure 11 A three-dimensional structural diagram of a sand casting mold;

[0028] Figure 12 This is a schematic diagram of a three-dimensional structure of the upper mold body;

[0029] Figure 13 A schematic diagram of a three-dimensional structure of the lower mold body;

[0030] In the diagram, 1—wear-resistant head, 1-1—upper body of wear-resistant head, 1-2—lower body of wear-resistant head, 2—sand mold base, 3—pouring sand mold, 4—riser, 5—sprue cup, 6—first main runner, 7—first split vertical runner, 8—cavity of upper body of wear-resistant head, 9—cavity of lower body of wear-resistant head, 10—positioning concave surface, 11—positioning post, 12—positioning convex surface, 13—first positioning hole, 14—second main runner, 15—second split vertical runner, 16—upper mold body, 17—lower mold body, 18—heating hole, 19—second positioning hole, 20—third positioning hole, 21—top mold hole, 22—positioning groove, 23—mold mounting hole, 24—sand injection port. Detailed Implementation

[0031] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0033] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] like Figures 3 to 13 As shown, this utility model discloses a wear-resistant head stacked sand mold and a sand casting mold.

[0036] The first aspect of this embodiment discloses a wear-resistant head stacked sand mold. For example... Figure 3 As shown, the wear-resistant head stacked sand mold includes a sand mold base 2 and a sand mold body arranged sequentially from bottom to top, and the sand mold body includes a plurality of casting sand molds 3 arranged sequentially from bottom to top.

[0037] Specifically, the sand mold body includes two or more casting sand molds 3, which are arranged sequentially from bottom to top. For example, the sand mold body includes a first casting sand mold 3, a second casting sand mold 3, and a third casting sand mold 3. The second casting sand mold 3 is located above the first casting sand mold 3, and the third casting sand mold 3 is located above the second casting sand mold 3. The lower surface of the second casting sand mold 3 is in contact with the upper surface of the first casting sand mold 3, and the lower surface of the third casting sand mold 3 is in contact with the upper surface of the second casting sand mold 3.

[0038] The sand mold base 2 is provided with a base gating channel, and the casting sand mold 3 is provided with a wear-resistant head cavity, a first main gating channel 6 and a first split vertical gating channel 7. The first main gating channel 6 is connected to the base gating channel, the base gating channel is connected to the first split vertical gating channel 7, and the first split vertical gating channel 7 is connected to the wear-resistant head cavity.

[0039] Multiple first split vertical runners 7 can be provided on each sand mold 3. The number of first split vertical runners 7 on each sand mold 3 is the same as the number of second split vertical runners 15 in the base runner. The number of wear-resistant head cavities on each sand mold 3 can be multiple, and each first split vertical runner 7 can communicate with multiple wear-resistant head cavities. For example, as... Figure 4 , Figure 5 and Figure 6 As shown, the casting sand mold 3 is provided with multiple first split vertical gating channels 7 and multiple wear-resistant head cavities. Each first split vertical gating channel 7 is connected to four, five, or six wear-resistant head cavities.

[0040] The base gating system includes a second main gating system 14 and a second split vertical gating system 15. The second main gating system 14 is connected to the second split vertical gating system 15. There can be multiple second split vertical gating systems 15, for example... Figure 8 As shown, the base gating system includes a second main gating system 14 and eight second split vertical gating systems 15, with the second main gating system 14 connected to the eight second split vertical gating systems 15.

[0041] After multiple sand molds 3 are stacked vertically, the first main gating channels 6 on the multiple sand molds 3 are connected sequentially, and then connected to the second main gating channel 14 in the base gating channel; the first split vertical gating channels 7 on the multiple sand molds 3 are connected sequentially, and then connected to the second split vertical gating channel 15 in the base gating channel. For example, as... Figure 9 As shown, ten sand casting molds 3 are stacked in sequence to form the main body of the sand mold. The main body of the sand mold and the sand mold base 2 are assembled to form a wear-resistant stacked sand mold.

[0042] During the casting of the wear-resistant head 1, the molten metal enters the first main gating 6 from the upper end of the first main gating 6, then flows into the base gating, and then into the first split vertical gating 7 and the wear-resistant head cavity. In this embodiment, multiple casting sand molds 3 are stacked to cast the wear-resistant head 1, which allows multiple wear-resistant heads 1 to be cast at once, thus improving the production efficiency of the wear-resistant head 1.

[0043] In some implementations of this embodiment, such as Figure 7As shown, the upper surface of the casting sand mold 3 is provided with a positioning concave surface 10 and a positioning post 11, the lower surface of the casting sand mold 3 is provided with a positioning convex surface 12 adapted to the positioning concave surface 10, and the lower surface of the casting sand mold 3 is provided with a first positioning hole 13 adapted to the positioning post 11. The positioning post 11 is located directly above the first positioning hole 13, and the positioning concave surface 10 is located directly above the positioning convex surface 12.

[0044] In these embodiments, the two casting sand molds 3 are detachably connected by the cooperation of the positioning pin 11 and the first positioning hole 13, and by the cooperation of the positioning concave surface 10 and the positioning convex surface 12. The casting sand molds 3 are detachably connected, which makes it easy to increase or decrease the number of casting sand molds 3 in the sand mold body, thereby meeting the casting requirements of different batches of wear-resistant heads 1.

[0045] The number of positioning posts 11 and first positioning holes 13 can be multiple, and the number of positioning posts 11 and first positioning holes 13 is the same. A positioning post 11 is provided directly above each first positioning hole 13 on the casting sand mold 3.

[0046] When two casting sand molds 3 are stacked, the first positioning hole 13 of the upper casting sand mold 3 is first matched with the positioning post 11 of the lower casting sand mold 3 to achieve positioning guidance; then the positioning convex surface 12 of the upper casting sand mold 3 is matched with the positioning concave surface 10 of the lower casting sand mold 3 to achieve the stacking of the two casting sand molds 3.

[0047] In some embodiments of this example, the top of the first split vertical runner 7 of the uppermost casting sand mold 3 is connected to a riser 4, which can compensate for the shrinkage of the wear-resistant head 1 during solidification. The top of the first main runner 6 of the uppermost casting sand mold 3 is connected to a pouring cup 5.

[0048] In some embodiments of this example, the wear-resistant head cavity includes a wear-resistant upper body cavity 8 and a wear-resistant lower body cavity 9. The wear-resistant upper body cavity 8 is used to form the wear-resistant upper body 1-1, and the wear-resistant lower body cavity 9 is used to form the wear-resistant lower body 1-2. The upper surface of the casting sand mold 3 is provided with the wear-resistant lower body cavity 9, and the lower surface of the casting sand mold 3 is provided with the wear-resistant upper body cavity 8. The wear-resistant lower body cavity 9 on the casting sand mold 3 is located directly above the wear-resistant upper body cavity 8, and the wear-resistant upper body cavity 8 is connected to the first split vertical runner 7.

[0049] The number of wear-resistant head cavities on the casting sand mold 3 can be multiple, that is, the casting sand mold 3 can have multiple upper wear-resistant head cavities 8 and multiple lower wear-resistant head cavities 9. The number of upper wear-resistant head cavities 8 and lower wear-resistant head cavities 9 on the casting sand mold 3 is the same, and a lower wear-resistant head cavity 9 is provided directly above each upper wear-resistant head cavity 8.

[0050] When two casting sand molds 3 are stacked, the upper wear-resistant head cavity 8 of the upper casting sand mold 3 and the lower wear-resistant head cavity 9 of the lower casting sand mold 3 correspond to each other to form multiple complete wear-resistant head cavities.

[0051] In some implementations of this embodiment, such as Figure 10 As shown, the upper surface of the sand mold base 2 is provided with a positioning concave surface 10 and a positioning post 11.

[0052] When assembling a sand casting mold 3 onto the sand casting base 2, firstly, the first positioning hole 13 of the sand casting mold 3 is engaged with the positioning post 11 of the sand casting base 2 to achieve positioning guidance; then, the positioning convex surface 12 of the sand casting mold 3 is engaged with the positioning concave surface 10 of the sand casting base 2 to assemble the sand casting mold 3 onto the sand casting base 2.

[0053] In these embodiments, the casting sand mold 3 and the sand mold base 2 are detachably connected by the cooperation of the positioning post 11 and the first positioning hole 13, and the cooperation of the positioning concave surface 10 and the positioning convex surface 12.

[0054] In some embodiments of this example, the upper surface of the sand mold base 2 is provided with a wear-resistant head lower body cavity 9, and the wear-resistant head lower body cavity 9 on the sand mold base 2 is located directly below the wear-resistant head upper body cavity 8 of the bottommost casting sand mold 3.

[0055] After the sand mold base 2 and the casting sand mold 3 are assembled into the main body of the sand mold, the wear-resistant head lower body cavity 9 on the sand mold base 2 and the wear-resistant head upper body cavity 8 on the bottom layer of the casting sand mold 3 cooperate to form a complete wear-resistant head cavity.

[0056] The second aspect of this embodiment discloses a sand casting mold, such as Figure 11 As shown, the sand casting mold includes an upper mold body 16 and a lower mold body 17, which cooperate to form a mold cavity for injection molding of the casting sand mold 3 as described in the first aspect of this embodiment.

[0057] Specifically, the upper mold body 16 and the lower mold body 17 cooperate to form a mold cavity, which is used for injection to form a casting sand mold 3.

[0058] When the upper mold body 16 and the lower mold body 17 are assembled to form a sand casting mold, the side of the upper mold body 16 that contacts the lower mold body 17 is the lower surface of the upper mold body 16, and the side of the lower mold body 17 that contacts the upper mold body 16 is the upper surface of the lower mold body 17. For example... Figure 12As shown, the lower surface of the upper mold body 16 is provided with an upper mold cavity, which is used for injection molding the upper half of the sand mold 3. The upper mold cavity contains a casting structure corresponding to the structure of the upper half of the sand mold 3. For example... Figure 13 As shown, the upper surface of the lower mold body 17 is provided with a lower mold cavity, which is used for injection molding of the lower half of the casting sand mold 3. The lower mold cavity is provided with an injection structure corresponding to the structure of the lower half of the casting sand mold 3.

[0059] In some embodiments of this example, both the upper mold body 16 and the lower mold body 17 are provided with heating holes 18. The heating holes 18 of the upper mold body 16 are all located on the side of the upper mold body 16, and the heating holes 18 of the lower mold body 17 are located on the side of the lower mold body 17. The heating holes 18 are used to heat the mold during injection, increase the temperature of the molding sand, and accelerate the solidification of the molding sand.

[0060] In some embodiments of this example, the upper mold body 16 and the lower mold body 17 are provided with positioning grooves 22 on the same side, and the positioning grooves 22 of the upper mold body 16 and the lower mold body 17 are combined to form a second positioning hole 19. For example, when the upper mold body 16 and the lower mold body 17 are engaged, the positioning grooves 22 in the upper mold body and the positioning grooves 22 in the lower mold body 17 communicate to form a second positioning hole 19.

[0061] In some embodiments of this example, the lower mold body 17 is provided with a third positioning hole 20 and a top mold hole 21 on the side away from the upper mold body 16, and the third positioning hole 20 is used for positioning and installing the mold.

[0062] In some embodiments of this example, both the upper mold body 16 and the lower mold body 17 are provided with mold mounting holes 23.

[0063] In some embodiments of this example, the upper mold body 16 is provided with a sand injection port 24.

[0064] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A wear-resistant head stacked sand mold, characterized in that, It includes a sand mold base and a sand mold body arranged sequentially from bottom to top. The sand mold body includes multiple casting sand molds arranged sequentially from bottom to top. The sand mold base is provided with a base gating channel. The casting sand mold is provided with a wear-resistant head cavity, a first main gating channel and a first split vertical gating channel. The first main gating channel is connected to the base gating channel. The base gating channel is connected to the first split vertical gating channel. The first split vertical gating channel is connected to the wear-resistant head cavity.

2. The wear-resistant head stacked sand mold according to claim 1, characterized in that, The upper surface of the casting sand mold is provided with a positioning concave surface and a positioning post, the lower surface of the casting sand mold is provided with a positioning convex surface adapted to the positioning concave surface, the lower surface of the casting sand mold is provided with a first positioning hole adapted to the positioning post, the positioning post is located directly above the first positioning hole, and the positioning concave surface is located directly above the positioning convex surface.

3. The wear-resistant head stacked sand mold according to claim 1, characterized in that, The top of the first split vertical runner of the uppermost sand mold is connected to a riser, and the top of the first main runner of the uppermost sand mold is connected to a pouring cup.

4. The wear-resistant head stacked sand mold according to claim 1, characterized in that, The wear-resistant head cavity includes a wear-resistant upper body cavity and a wear-resistant lower body cavity. The upper surface of the casting sand mold is provided with the wear-resistant lower body cavity, and the lower surface of the casting sand mold is provided with the wear-resistant upper body cavity. The wear-resistant lower body cavity on the casting sand mold is located directly above the wear-resistant upper body cavity, and the wear-resistant upper body cavity is connected to the first split vertical runner.

5. The wear-resistant head stacked sand mold according to claim 1, characterized in that, The upper surface of the sand mold base is provided with a wear-resistant head lower body cavity, a positioning concave surface, and a positioning post.

6. The wear-resistant head stacked sand mold according to claim 1, characterized in that, The base gating system includes a second main gating system and a second split vertical gating system, with the second main gating system and the second split vertical gating system connected.

7. A sand casting mold, characterized in that, It includes an upper mold body and a lower mold body, which cooperate to form a mold cavity for injection molding of a casting sand mold as described in any one of claims 1-6.

8. A sand casting mold according to claim 7, characterized in that, The upper mold body and the lower mold body are provided with positioning grooves on the same side, and the positioning grooves of the upper mold body and the lower mold body are combined to form a second positioning hole.

9. A sand casting mold according to claim 7, characterized in that, The upper mold body is provided with heating holes, mold mounting holes and sand injection ports.

10. A sand casting mold according to claim 7, characterized in that, The lower mold body is provided with a heating hole, a mold mounting hole, a third positioning hole and a top mold hole, wherein the third positioning hole and the top mold hole are located on the side of the lower mold body away from the upper mold body.

Images