Casting mold for speed reducer box body

Abstract

The utility model discloses a speed reducer box casting mold which comprises a mold body and a pouring gate rod connected with the mold body and further comprises a buffering groove fixedly connected to the top end of the pouring gate rod and a blocking piece arranged in the buffering groove, and a first communicating hole communicating with the pouring gate rod is formed in the bottom of the buffering groove; the blocking piece can block part of the first communicating hole so as to adjust the flow speed of the casting liquid, the casting quality problem caused by the too high flow speed of the casting liquid is avoided, and the casting quality of the speed reducer box is improved.

Description

Technical Field

[0001] This application relates to the technical field of casting molds, and in particular to a casting mold for a reducer housing. Background Art

[0002] Reducer housings are generally made by the method of sand casting. The castings of reducer housings are relatively large and have complex internal structures. Therefore, the internal cavity of the mold is large and complex. During the casting process, a large amount of gas in the mold needs to be discharged. Although there are air vents on the mold, the air outlet requirements still cannot be met, resulting in holes on the reducer housing and affecting the product quality. Summary of the Utility Model

[0003] In order to overcome the above problems, this application provides a casting mold for a reducer housing.

[0004] A casting mold for a reducer housing provided by this application adopts the following technical solutions:

[0005] A casting mold for a reducer housing includes a mold body and a runner rod connected to the mold body. It further includes a buffer groove fixedly connected to the top of the runner rod and a plug provided in the buffer groove. A first communication hole communicating with the runner rod is opened at the bottom of the buffer groove. The plug can block part of the first communication hole to adjust the flow rate of the casting liquid.

[0006] By adopting the above technical solutions, since this application adds a buffer groove and a plug at the top of the runner rod, by adjusting the position of the plug, the size of the first communication hole is adjusted, effectively controlling the flow rate of the casting liquid, avoiding defects such as internal air holes and shrinkage holes in the casting caused by too fast flow rate of the casting liquid, and improving the casting quality of the reducer housing.

[0007] Optionally, a second communication hole penetrating through the plug is opened downward at the top of the plug, and the second communication hole communicates with the runner rod.

[0008] By adopting the above technical solutions, the above design enables the gas in the mold to be discharged through the runner rod and the second communication hole, further improving the exhaust effect of the mold.

[0009] Optionally, the top wall of the plug is higher than the buffer groove.

[0010] By adopting the above technical solutions, the top wall of the plug being higher than the buffer groove can prevent the casting liquid in the buffer groove from flowing into the runner rod through the second communication hole and affecting the exhaust effect of the mold.

[0011] Optionally, a connection component is provided between the buffer groove and the plug.

[0012] By adopting the above technical solutions, the connection component reduces the possibility of the plug being knocked down by the casting liquid and increases the stability of the plug.

[0013] Optionally, the connecting component includes a cross bar, a vertical bar, a first bolt and a second bolt. One end of the cross bar is connected to the top of the plugging member, and a through groove is formed at the other end of the cross bar. A first threaded hole communicating with the groove is provided on the vertical side wall of the cross bar. The vertical bar is inserted into the groove and can slide left and right in the groove. The first bolt is connected to the first threaded hole and is threadedly connected to the vertical bar. The second bolt passes through the vertical bar and the side wall of the buffer groove to fix the vertical bar and the buffer groove.

[0014] By adopting the above technical solution, the above connecting component can fix the plugging member in the buffer groove without being affected by the position of the plugging member;

[0015] During use, place the plugging member at a suitable position, place the vertical bar in the groove, screw the first bolt into the first threaded hole and then into the vertical bar. The vertical bar is fixed in the groove, and the second bolt fixes the vertical bar and the buffer groove, so that the plugging member is fixed. When the plugging member needs to be moved, just adjust the position of the vertical bar in the groove according to the actual situation and fix the vertical bar and the buffer groove again.

[0016] Optionally, a high-temperature resistant gasket is connected to the bottom of the plugging member.

[0017] By adopting the above technical solution, the high-temperature resistant gasket can maintain good sealing performance in a high-temperature environment, thereby ensuring the sealing between the plugging member and the buffer groove and preventing the casting liquid from seeping out of the gap.

[0018] Optionally, the connection between the cross bar and the plugging member is a detachable connection.

[0019] By adopting the above technical solution, this design facilitates the replacement or repair of the plugging member when needed, improving the convenience of use and maintenance efficiency of the mold. At the same time, the detachable connection also enables the plugging member to be customized according to actual needs to meet the requirements of different casting processes.

[0020] Optionally, the plugging member is a cuboid.

[0021] By adopting the above technical solution, the cuboid-shaped plugging member is convenient for processing and manufacturing, and is also beneficial to improving the stability of the plugging member in the buffer groove. In addition, the cuboid structure can ensure that the plugging member can evenly block the first communication hole during the adjustment process, thereby realizing the uniform adjustment of the flow rate of the casting liquid.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Since a buffer groove and a plug are added to the top end of the runner rod in this application, by adjusting the position of the plug, the size of the first communication hole is adjusted, thus effectively controlling the flow rate of the casting liquid, avoiding defects such as internal air holes and shrinkage holes in the casting caused by too fast flow rate of the casting liquid, and improving the casting quality of the reducer housing.

[0024] 2. In this application, it is preferably to use a connecting component to connect the buffer groove and the plug, and the connecting component can fix the plug in the buffer groove regardless of the position of the plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of an embodiment of this application;

[0026] Figure 2 is a top view of the buffer groove in the embodiment of this application;

[0027] Figure 3 is a schematic structural diagram showing the connecting component in the embodiment of this application.

[0028] In the figure, 1, mold body; 2, runner rod; 3, buffer groove; 31, first communication hole; 4, plug; 41, second communication hole; 42, high-temperature gasket; 5, connecting component; 51, cross bar; 511, chute; 512, first threaded hole; 52, vertical rod; 53, first bolt; 54, second bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following further elaborates on this application in conjunction with the attached Figures 1 - 3 for further detailed description.

[0030] The embodiment of this application discloses a casting mold for a reducer housing.

[0031] As Figure 1 and Figure 2 shown, a casting mold for a reducer housing includes a mold body 1, a runner rod 2 connected to the mold body 1, a buffer groove 3 fixedly connected to the top end of the runner rod 2, and a plug 4 arranged in the buffer groove 3. A first communication hole 31 communicating with the runner rod 2 is opened at the bottom of the buffer groove 3, and the plug 4 can block part of the first communication hole 31 to adjust the flow rate of the casting liquid.

[0032] By adjusting the position of the plug 4 in the buffer groove 3, the present application can change the blocked area of the first communication hole 31, thereby achieving precise control of the casting liquid flow rate. During the casting process, the casting liquid first flows into the buffer groove 3, then flows into the runner rod 2 through the first communication hole 31, and finally enters the mold. By adjusting the position of the plug 4, the flow rate of the casting liquid through the first communication hole 31 can be controlled, avoiding quality problems such as air holes and shrinkage holes in the casting due to too fast flow rate of the casting liquid. At the same time, the design of the buffer groove 3 can also play a certain buffering role, reducing the impact of the casting liquid on the mold, which is beneficial to improving the surface quality of the casting.

[0033] As Figure 1 and Figure 2 shown, the plug 4 is a cuboid. A second communication hole 41 penetrating through the plug 4 is opened downward at the top of the plug 4, and the second communication hole 41 communicates with the runner rod 2.

[0034] The cuboid-shaped plug 4 is convenient for processing and manufacturing, and is also beneficial to improving the stability of the plug 4 in the buffer groove 3. In addition, the cuboid structure can also ensure that the plug 4 can evenly block the first communication hole 31 during the adjustment process, thereby achieving uniform adjustment of the casting liquid flow rate; the communication design of the second communication hole 41 with the runner rod 2 enables the gas in the mold to be discharged through the runner rod 2 and the second communication hole 41, further improving the exhaust effect of the mold.

[0035] As Figure 1 and Figure 2 shown, the top wall of the plug 4 is higher than the buffer groove 3, which can effectively prevent the casting liquid in the buffer groove 3 from flowing into the runner rod 2 through the second communication hole 41 and affecting the exhaust effect of the mold.

[0036] As Figure 2 and Figure 3 shown, a high-temperature resistant sealing pad 42 is fixedly connected to the bottom of the plug 4. The high-temperature resistant sealing pad 42 can maintain good sealing performance in a high-temperature environment, thereby ensuring the sealing between the plug 4 and the buffer groove 3 and preventing the casting liquid from seeping out from the gap.

[0037] As Figure 2 and Figure 3As shown in the figure, a connecting component 5 is provided between the buffer groove 3 and the plug 4. The connecting component 5 includes a cross bar 51, a vertical bar 52, a first bolt 53 and a second bolt 54. One end of the cross bar 51 is connected to the top of the plug 4. A chute 511 penetrating the cross bar 51 is formed at the top of the other end of the cross bar 51. A first threaded hole 512 communicating with the chute 511 is provided on the vertical side wall of the cross bar 51. The vertical bar 52 is inserted into the chute 511 and can slide left and right in the vertical bar 52. The first bolt 53 is connected to the first threaded hole 512 and the first bolt 53 is threadedly connected to the vertical bar 52. The vertical bar 52 is fixed in the chute 511. The second bolt 54 passes through the vertical bar 52 and the side wall of the buffer groove 3 to fix the vertical bar 52 and the buffer groove 3.

[0038] During use, the plug 4 is placed at a suitable position. The vertical bar 52 is placed in the chute 511. The first bolt 53 is screwed into the first threaded hole 512 and then into the vertical bar 52. The vertical bar 52 is fixed in the chute 511. The second bolt 54 fixes the vertical bar 52 and the buffer groove 3, so that the plug 4 is fixed. When the plug 4 needs to be moved, only the position of the vertical bar 52 in the chute 511 needs to be adjusted according to the actual situation, and then the vertical bar 52 and the buffer groove 3 are fixed again. The above-mentioned connecting component 5 can fix the plug 4 in the buffer groove 3 without being affected by the position of the plug 4.

[0039] The implementation principle of a casting mold for a reducer housing in an embodiment of the present application is as follows: during the casting process, the molten metal first flows into the buffer groove 3, then flows into the runner rod 2 through the first communication hole 31, and finally enters the mold. By adjusting the position of the plug 4, the flow rate of the molten metal through the first communication hole 31 can be controlled, avoiding quality problems such as porosity and shrinkage of the casting caused by too fast flow rate of the molten metal.

[0040] The embodiments of the present specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A reducer housing casting mold, comprising a mold body (1) and a runner rod (2) connected to the mold body (1), characterized in that: The invention also comprises a buffer groove (3) fixedly connected to the top of the runner rod (2) and a plugging member (4) arranged in the buffer groove (3); a first connecting hole (31) communicating with the runner rod (2) is opened at the bottom of the buffer groove (3); the plugging member (4) can block part of the first connecting hole (31) to adjust the casting liquid flow rate; a connecting assembly (5) is arranged between the buffer groove (3) and the plugging member (4); the connecting assembly (5) comprises a cross bar (51), a vertical bar (52), a first bolt (53) and a second bolt (54); one end of the cross bar (51) is connected to the top of the plugging member (4); The top of the other end of the cross bar (51) is provided with a slide groove (511) penetrating the cross bar (51), and the vertical side wall of the cross bar (51) is provided with a first threaded hole (512) connected to the slide groove (511), the vertical bar (52) is inserted into the slide groove (511) and can slide left and right in the vertical bar (52), the first bolt (53) is connected to the first threaded hole (512) and the first bolt (53) is threadedly connected to the vertical bar (52), and the second bolt (54) passes through the side wall of the vertical bar (52) and the buffer groove (3) to fix the vertical bar (52) and the buffer groove (3).

2. A reducer housing casting mold according to claim 1, characterized in that: A second communication hole (41) penetrating the blocking member (4) is provided downwardly at the top of the blocking member (4), and the second communication hole (41) is communicated with the runner rod (2).

3. A reducer housing casting mold according to claim 2, characterized in that: The top wall of the blocking member (4) is higher than the buffer groove (3).

4. The reducer housing casting mold according to claim 2, characterized in that: The bottom of the blocking member (4) is connected to a high temperature resistant sealing gasket (42).

5. The reducer housing casting mold according to claim 1, characterized in that: The connection between the cross bar (51) and the blocking member (4) is a detachable connection.

6. The reducer housing casting mold according to claim 1, characterized in that: The blocking member (4) is a rectangular parallelepiped.

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