Casting mold for gearbox body

Abstract

The invention relates to the technical field of casting molds, and discloses a gearbox body casting mold which comprises a casting mechanism and further comprises a pressurizing mechanism, a temperature control mechanism, a supporting structure and a replacing mechanism, the bottom end of the casting mechanism is fixedly connected with the top end of the temperature control mechanism, and the side face of the pressurizing mechanism is fixedly connected with the side face of the temperature control mechanism; the pressurizing mechanism comprises a sliding plate and a supporting plate, the top end of the sliding plate is connected with an auxiliary disc, the side face of the sliding plate is fixedly connected with a pressurizing rod, the bottom end of the pressurizing rod is connected with the inner side of the supporting structure, the side face of the supporting plate is connected with a follow-up disc, and the side face of the follow-up disc is fixedly connected with the side face of the temperature control mechanism. The temperature control mechanism is arranged, so that molten metal can be solidified or adhered to the pipe wall due to temperature reduction in the conveying process; and the backflow prevention mechanism is arranged, so that condensate is prevented from flowing back to the smelting furnace or the molten metal source due to temperature difference or other reasons in the cooling process.

Description

Technical Field

[0001] The present invention relates to the technical field of casting molds, and more particularly to a casting mold for a gearbox housing. Background Art

[0002] Low-pressure casting is a casting method in which liquid alloy is pressed from bottom to top into the mold cavity under pressure and solidified under pressure to obtain a casting. The low-pressure casting equipment generally consists of a main machine, a hydraulic system, a holding furnace, a liquid level pressurizing device, an electrical control system, a mold cooling system, etc. By pressurizing, the filling of the riser tube to the mold is more complete. However, no matter how the pressure changes, there will be a residue problem inside the riser tube after the mold cools, as follows: First, the molten metal is pressed into the riser tube through the air pressure difference and then enters the mold. After the liquid fills the entire mold, the pressure still needs to be maintained. When the mold cools and solidifies, the air pressure can be recovered, so that the liquid inside the riser tube flows back to the holding furnace for subsequent reuse. However, when the mold cools, some of the metal at the top of the riser tube will also solidify and adhere to the tube wall. If not cleaned in time, it will affect the next casting, and it also has a certain corrosive effect on the riser tube; Second, when the molten metal is poured into the holding furnace, the air inside expands and enters the inner side of the hydraulic tube and condenses into water droplets. When the hydraulic system is started, the water droplets are pressed into the molten metal, and due to the high temperature, their reaction will be violent, causing problems in subsequent casting.

[0003] Therefore, the present invention urgently needs to provide a casting mold for a gearbox housing. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a casting mold for a gearbox housing to solve the problem that there will be residues inside the riser tube after the mold cools regardless of how the pressure changes in the above-mentioned background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A casting mold for a gearbox housing includes a casting mechanism, and further includes: a pressurizing mechanism, a temperature control mechanism, a support structure, and a replacement mechanism. The bottom end of the casting mechanism is fixedly connected to the top end of the temperature control mechanism, the side of the pressurizing mechanism is fixedly connected to the side of the temperature control mechanism, the bottom end of the pressurizing mechanism is fixedly connected to the top end of the support structure, and the side of the support structure is fixedly connected to the inner side of the replacement mechanism; The pressurizing mechanism includes a sliding plate and a support plate. An auxiliary disk is connected to the top end of the sliding plate, a pressurizing rod is fixedly connected to the side of the sliding plate, the bottom end of the pressurizing rod is connected to the inner side of the support structure, a follower disk is connected to the side of the support plate, and the side of the follower disk is fixedly connected to the side of the temperature control mechanism; The replacement mechanism includes an outer sealing tube and an inner sealing frame. The side of the inner sealing frame is connected to the side of the support structure. An inner sealing frame is fixedly connected to the inner side of the inner sealing frame. The side of the inner sealing frame is connected to the inner side of the support structure. A micro motor is fixedly connected to the inner side of the outer sealing tube.

[0006] Further, the casting mechanism includes a heat preservation tank and a liquid rising pipe. A feeding pipe is fixedly connected to the side of the heat preservation tank. A ventilation pipe is fixedly connected to the side of the heat preservation tank. The side of the ventilation pipe is fixedly connected to the top end of the support structure. A bearing plate is fixedly connected to the top end of the heat preservation tank. A cushion block is fixedly connected to the top end of the bearing plate. The side of the liquid rising pipe is fixedly connected to the side of the heat preservation tank.

[0007] Further, a lower mold is fixedly connected to the top end of the cushion block. A moving rod is fixedly connected to the top end of the cushion block. The side of the moving rod is connected to the side of the lower mold. An inner pressing block is fixedly connected to the inner side of the lower mold. An upper mold is connected to the top end of the lower mold. A fixing groove is formed at the bottom end of the lower mold. The side of the fixing groove is fixedly connected to the side of the temperature control mechanism. The bottom end of the lower mold is fixedly connected to the top end of the liquid rising pipe.

[0008] Further, an installation groove is formed on the side of the sliding plate. A bearing is fixedly connected to the side of the installation groove. An auxiliary disk is fixedly connected to the inner side of the bearing. A connecting plate is fixedly connected to the side of the auxiliary disk. The side of the connecting plate is connected to the inner side of the power disk. A rotating rod is fixedly connected to the side of the power disk. A reciprocating motor is fixedly connected to the top end of the rotating rod. A support plate is fixedly connected to the side of the reciprocating motor. A sealing plate is fixedly connected to the bottom end of the pressing rod.

[0009] Further, an I-shaped sliding rail is fixedly connected to the side of the support plate. A T-shaped sliding plate is connected to the side of the I-shaped sliding rail. The side of the T-shaped sliding plate is fixedly connected to the side of the sliding plate. A sliding groove is formed on the side of the support plate. The inner side of the sliding groove is connected to the side of the follower disk. The side of the follower disk is fixedly connected to the side of the sliding plate. The side of the support plate is connected to the side of the rotating rod.

[0010] Further, the temperature control mechanism includes a connecting head and a sliding disk. A connecting wire is fixedly connected to the inner side of the connecting head. A heating resistor is fixedly connected to the top end of the connecting wire. The side of the heating resistor is fixedly connected to the inner side of the fixing groove. A resistor plate is fixedly connected to the inner side of the connecting head. The side of the resistor plate is connected to the inner side of the sliding disk. An auxiliary rod is fixedly connected to the side of the sliding disk. The top end of the auxiliary rod is fixedly connected to the side of the follower disk.

[0011] Furthermore, the supporting structure includes a fixed plate and a storage tank, the bottom end of the fixed plate is fixedly connected to a supporting leg, the side of the supporting leg is fixedly connected to a fixing ring, the side of the fixing ring is fixedly connected to the side of the storage tank, the inner side of the storage tank is connected to the side of the sealing plate, the bottom end of the storage tank is fixedly connected to an outlet pipe, and the side of the outlet pipe is fixedly connected to the side of the ventilation pipe.

[0012] Furthermore, the bottom end of the micro motor is fixedly connected to a rotating shaft, the side of the rotating shaft is fixedly connected to a rotating ring, the side of the rotating ring is fixedly connected to the side of the inner sealing frame, the side of the inner sealing frame is fixedly connected to a sponge block, and the side of the outer sealing tube is fixedly connected to the side of the outlet pipe.

[0013] Technical effects and advantages of the present invention: 1. The present invention is provided with a temperature control mechanism, which is conducive to the solidification or adhesion of molten metal to the pipe wall due to the temperature reduction during the transmission process; the heating of the end of the riser makes the molten metal more stable during the flow process, which helps to improve the efficiency of the casting process; the insulation performance of the riser is changed by shaping the integrity of the mold with different pressures, which is conducive to reducing the adhesion or crystallization of the metal in the pipe, reducing the wear and corrosion of the pipe.

[0014] 2. The present invention is provided with a backflow prevention mechanism, which is helpful to prevent the condensate from flowing back into the furnace or the molten metal source due to temperature difference or other reasons during the cooling process; and a rotating ring is provided to fix multiple sponge blocks in turn on the inner side of the pipeline, which is helpful to prevent the sponge blocks from becoming saturated and reducing their backflow prevention effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the casting mechanism structure of the present invention; Figure 3 It is a schematic diagram of the supporting mechanism structure of the present invention; Figure 4 It is a schematic diagram of the structure of the pressurizing mechanism of the present invention; Figure 5 It is a schematic diagram of the disassembled structure of the pressurizing mechanism of the present invention; Figure 6 It is a schematic diagram of the physical structure of the temperature control structure part of the present invention; Figure 7 It is a schematic diagram of the structure of the replacement mechanism of the present invention; Figure 8 It is a partial structural schematic diagram of the replacement mechanism of the present invention; Figure 9 It is the circuit diagram of the temperature control mechanism of the present invention.

[0016] The reference numerals are: 1. casting mechanism; 101. heat preservation tank; 102. feeding pipe; 103. ventilation pipe; 104. lifting pipe; 105. load-bearing plate; 106. lower die; 107. upper die; 108. inner pressure block; 109. moving rod; 110. fixing groove; 111. cushion block; 2. pressurizing mechanism; 21. sliding plate; 211. bearing; 212. installation groove; 22. pressurizing rod; 221. sealing plate; 23. power disk; 231. auxiliary disk; 232. connecting plate; 233. reciprocating motor; 234. rotating rod; 24. support plate; 241. I-shaped slide rail; 242. T-shaped slide plate; 243. follower disk; 244. sliding groove; 3. temperature control mechanism; 301. connecting head; 302. sliding disk; 303. connecting wire; 304. auxiliary rod; 305. resistance plate; 306. heating resistance; 4. support structure; 401. fixing plate; 402. support leg; 403. fixing ring; 404. storage tank; 405. air outlet pipe; 5. replacement mechanism; 501. outer sealing pipe; 502. inner sealing frame; 503. sponge block; 504. rotating ring; 505. rotating shaft; 506. micro motor. Detailed implementation manners

[0017] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. In addition, the forms of each structure described in the following implementation manners are only examples. A casting mold for a gearbox housing involved in the present invention is not limited to the structures described in the following implementation manners. All other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0018] Referring to Figure 1 and Figure 2 , the present invention provides a casting mold for a gearbox housing, including a casting mechanism 1, and further including: a pressurizing mechanism 2, a temperature control mechanism 3, a support structure 4, and a replacement mechanism 5. The bottom end of the casting mechanism 1 is fixedly connected to the top end of the temperature control mechanism 3, the side of the pressurizing mechanism 2 is fixedly connected to the side of the temperature control mechanism 3, the bottom end of the pressurizing mechanism 2 is fixedly connected to the top end of the support structure 4, and the side of the support structure 4 is fixedly connected to the inner side of the replacement mechanism 5; The pressing mechanism 2 includes a sliding plate 21 and a support plate 24. An auxiliary disk 231 is connected to the top end of the sliding plate 21. A pressing rod 22 is fixedly connected to the side surface of the sliding plate 21. The bottom end of the pressing rod 22 is connected to the inner side of the support structure 4. A follower disk 243 is connected to the side surface of the support plate 24. The side surface of the follower disk 243 is fixedly connected to the side surface of the temperature control mechanism 3. The replacement mechanism 5 includes an outer sealing tube 501 and an inner sealing frame 502. The side surface of the inner sealing frame 502 is connected to the side surface of the support structure 4. An inner sealing frame 502 is fixedly connected to the inner side of the inner sealing frame 502. The side surface of the inner sealing frame 502 is connected to the inner side of the support structure 4. A micro motor 506 is fixedly connected to the inner side of the outer sealing tube 501.

[0019] Among them, the casting mechanism 1 includes a heat preservation tank 101 and a liquid rising pipe 104. A feeding pipe 102 is fixedly connected to the side surface of the heat preservation tank 101. A ventilation pipe 103 is fixedly connected to the side surface of the heat preservation tank 101. The side surface of the ventilation pipe 103 is fixedly connected to the top end of the support structure 4. A bearing plate 105 is fixedly connected to the top end of the heat preservation tank 101. A cushion block 111 is fixedly connected to the top end of the bearing plate 105. The side surface of the liquid rising pipe 104 is fixedly connected to the side surface of the heat preservation tank 101.

[0020] Among them, a lower mold 106 is fixedly connected to the top end of the cushion block 111. A moving rod 109 is fixedly connected to the top end of the cushion block 111. The side surface of the moving rod 109 is connected to the side surface of the lower mold 106. An inner pressing block 108 is fixedly connected to the inner side of the lower mold 106. An upper mold 107 is connected to the top end of the lower mold 106. A fixing groove 110 is opened at the bottom end of the lower mold 106. The side surface of the fixing groove 110 is fixedly connected to the side surface of the temperature control mechanism 3. The bottom end of the lower mold 106 is fixedly connected to the top end of the liquid rising pipe 104.

[0021] By fixing through the cushion block 111 between the lower mold 106 and the bearing plate 105 and fixing the heating resistor 306 inside the fixing groove 110, it is possible to buffer the process of the upper mold 107 and the lower mold 106 being pressed together without pressing on the heating resistor 306.

[0022] Figures 3 to 6 , an installation groove 212 is opened on the side surface of the sliding plate 21. A bearing 211 is fixedly connected to the side surface of the installation groove 212. An auxiliary disk 231 is fixedly connected to the inner side of the bearing 211. A connecting plate 232 is fixedly connected to the side surface of the auxiliary disk 231. The side surface of the connecting plate 232 is connected to the inner side of the power disk 23. A rotating rod 234 is fixedly connected to the side surface of the power disk 23. A reciprocating motor 233 is fixedly connected to the top end of the rotating rod 234. The side surface of the reciprocating motor 233 is fixedly connected to the support plate 24. A sealing plate 221 is fixedly connected to the bottom end of the pressing rod 22.

[0023] Among them, an I-shaped slide rail 241 is fixedly connected to the side of the support plate 24. A T-shaped slide plate 242 is connected to the side of the I-shaped slide rail 241. The side of the T-shaped slide plate 242 is fixedly connected to the side of the sliding plate 21. A sliding groove 244 is formed in the side of the support plate 24. The inner side of the sliding groove 244 is connected to the side of the follower disc 243. The side of the follower disc 243 is fixedly connected to the side of the sliding plate 21. The side of the support plate 24 is connected to the side of the rotating rod 234.

[0024] Among them, the temperature control mechanism 3 includes a connector 301 and a sliding disc 302. A connecting wire 303 is fixedly connected to the inner side of the connector 301. The top end of the connecting wire 303 is fixedly connected to a heating resistor 306. The side of the heating resistor 306 is fixedly connected to the inner side of the fixing groove 110. A resistor plate 305 is fixedly connected to the inner side of the connector 301. The side of the resistor plate 305 is connected to the inner side of the sliding disc 302. The side of the sliding disc 302 is fixedly connected to an auxiliary rod 304. The top end of the auxiliary rod 304 is fixedly connected to the side of the follower disc 243.

[0025] Driven by the reciprocating motor 233, the connecting plate 232 expands and contracts inside the power disc 23 and drives the installation groove 212 to rotate. Since the installation groove 212 is fixed to the side of the sliding plate 21 and guided by the I-shaped slide rail 241 and the T-shaped slide plate 242, it drives the sliding of the sliding plate 21. And the pressure rod 22 at the bottom end of the sliding plate 21 moves rigidly, pressing the gas inside the storage tank 404 into the interior of the heat preservation tank 101; the other side of the sliding plate 21 drives the follower disc 243 to move inside the sliding groove 244, and the sliding disc 302 connected through the auxiliary rod 304 also slides on the side of the resistor plate 305; Regarding the pressurization situation inside the heat preservation tank 101, there is mainly the liquid opening stage, enabling the internal liquid to smoothly enter the gap between the lower mold 106 and the upper mold 107 from the heat preservation tank 101 through the lifting pipe 104. At this time, the sliding of the sliding disc 302 on the resistor plate 305 undergoes a small temperature drop from the heating state; when continuing to increase the pressure during the filling process, the position of the sliding disc 302 provides heat reaching the melting point of its metal; during the pressure holding stage, the heat provided by the position of the sliding disc 302 is less than its melting point. At this time, the mold inside the upper mold 107 is in the stage of cooling and shaping. The heat generation of the sliding disc 302 also cools the mold. Moreover, the liquid at the port of the lifting pipe 104 can effectively prevent the liquid filled into the mold from flowing back into the heat preservation tank 101 after cooling; when the mold cooling is completed, the pressure rod 22 at the top of the storage tank 404 moves upward and drives the sliding disc 302 to rise to the highest point, heating the heating resistor 306, melting the metal at the port of the lifting pipe 104 and sliding it into the interior of the heat preservation tank 101; Reference Figure 9, the sliding disc 302 slides on the resistance plate 305. The highest point of the resistance plate 305 is the rightmost end in the figure. When the sliding disc 302 is at the rightmost end of the resistance plate 305, the current concentrates at the heating resistor 306, increasing its heating efficiency.

[0026] Reference Figure 7 and Figure 8 , the support structure 4 includes a fixing plate 401 and a storage tank 404. The bottom end of the fixing plate 401 is fixedly connected with support legs 402. The side of the support legs 402 is fixedly connected with a fixing ring 403. The side of the fixing ring 403 is fixedly connected with the side of the storage tank 404. The inner side of the storage tank 404 is connected with the side of the sealing plate 221. The bottom end of the storage tank 404 is fixedly connected with an air outlet pipe 405. The side of the air outlet pipe 405 is fixedly connected with the side of the ventilation pipe 103.

[0027] Among them, the bottom end of the micro-motor 506 is fixedly connected with a rotating shaft 505. The side of the rotating shaft 505 is fixedly connected with a rotating ring 504. The side of the rotating ring 504 is fixedly connected with the side of the inner sealing frame 502. The side of the inner sealing frame 502 is fixedly connected with a sponge block 503. The side of the outer sealing pipe 501 is fixedly connected with the side of the air outlet pipe 405.

[0028] The condensed water emerging at the bottom end of the air outlet pipe 405 converges to the position where the replacement mechanism 5 is located and is absorbed by the sponge block 503 and will not be blown back into the inner side of the heat preservation tank 101 by the gas introduced into the air outlet pipe 405. Through the action of the heating resistor 306, multiple sponge blocks 503 on the side of the rotating ring 504 can be rotated. After each pressure relief, the micro-motor 506 is started to replace the sponge block 503. The outer sealing pipe 501 seals the air outlet pipes 405 at both ends, preventing air leakage.

[0029] The working principle of the present invention: During the casting process, first, the molten metal liquid is poured into the inner side of the heat preservation tank 101 through the feeding pipe 102. Air or inert gas is introduced into the inner side through the ventilation pipe 103. The metal liquid is sent to the inner sides of the upper mold 107 and the inner pressure block 108 through the action of the lifting pipe 104, and is kept under pressure by the gas pressure until it cools. Then, the internal pressure of the heat preservation tank 101 is changed, and the remaining liquid in the lifting pipe 104 flows back into the inner side of the heat preservation tank 101.

[0030] A heating resistor 306 is added to the top of the riser pipe 104. After the top of the riser pipe 104 is synchronously cooled with the mold inside the lower mold 106 by the timely heating of the heating resistor 306, there is some solidified metal remaining inside, which has a certain resistance effect on the next pressurization. The heating temperature of the heating resistor 306 is controlled by the gas blown from the storage tank 404 into the heat preservation tank 101. When the reciprocating motor 233 starts to drive the rotating rod 234 to rotate, the rotating rod 234 drives the power disk 23 to rotate, which will cause the connecting plate 232 to expand and contract on the side of the power disk 23, and drive the movement of the auxiliary disk 231. The auxiliary disk 231 is fixed inside the bearing 211 to ensure the relative sliding between the auxiliary disk 231 and the sliding plate 21. The T-shaped sliding plate 242 fixed at the bottom of the sliding plate 21 meshes with the I-shaped sliding rail 241 fixed on the side of the power disk 23 to control the sliding direction of the sliding plate 21; The pressurizing rod 22 at the top of the storage tank 404 is fixed to the side of the sliding plate 21 by screws, and a follower disk 243 is also fixed to the side of the sliding plate 21. The side of the follower disk 243 is connected to the side of the sliding disk 302 by an auxiliary rod 304. Therefore, when the sliding plate 21 moves, it can not only change the pressure inside the heat preservation tank 101, but also change the temperature of the heating resistor 306 through the connection between the sliding disk 302 and the connector 301.

[0031] When the metal liquid is poured into the heat preservation tank 101, due to the high temperature, the water vapor inside the heat preservation tank 101 is evaporated and enters the inside of the air outlet pipe 405 through the ventilation pipe 103. After the inner wall of the air outlet pipe 405 cools it, condensation beads are formed and slide down to the low-lying area inside the air outlet pipe 405. When the gas in the storage tank 404 is introduced into the heat preservation tank 101, it is easy to push the condensed liquid into the heat preservation tank 101, and the dripping into the high-temperature metal liquid will have a violent evaporation reaction; Therefore, an outer sealing pipe 501 is fixed at the low-lying area of the air outlet pipe 405 to ensure the airtightness inside the air outlet pipe 405. An inner sealing frame 502 is installed at the micro motor 506 fixed inside the outer sealing pipe 501. The inner sealing frame 502 is stuck at the break of the air outlet pipe 405 to improve its airtightness. A sponge block 503 is fixed inside the inner sealing frame 502 to absorb the condensation beads inside the air outlet pipe 405. By starting the micro motor 506 to drive the rotating ring 504 to rotate, the soaked sponge block 503 is replaced to keep its inside dry.

[0032] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A casting mold for a gearbox housing, comprising a casting mechanism (1), characterized in that, Further included are: a pressurizing mechanism (2), a temperature control mechanism (3), a support structure (4), and a replacement mechanism (5). The bottom end of the casting mechanism (1) is fixedly connected to the top end of the temperature control mechanism (3). The side surface of the pressurizing mechanism (2) is fixedly connected to the side surface of the temperature control mechanism (3). The bottom end of the pressurizing mechanism (2) is fixedly connected to the top end of the support structure (4). The side surface of the support structure (4) is fixedly connected to the inner side of the replacement mechanism (5); The pressurizing mechanism (2) includes a sliding plate (21) and a support plate (24). An auxiliary disc (231) is connected to the top end of the sliding plate (21). A pressurizing rod (22) is fixedly connected to the side surface of the sliding plate (21). The bottom end of the pressurizing rod (22) is connected to the inner side of the support structure (4). A follower disc (243) is connected to the side surface of the support plate (24). The side surface of the follower disc (243) is fixedly connected to the side surface of the temperature control mechanism (3); The replacement mechanism (5) includes an outer sealing tube (501) and an inner sealing frame (502). The side surface of the inner sealing frame (502) is connected to the side surface of the support structure (4). An inner sealing frame (502) is fixedly connected to the inner side of the inner sealing frame (502). The side surface of the inner sealing frame (502) is connected to the inner side of the support structure (4). A micro motor (506) is fixedly connected to the inner side of the outer sealing tube (501).

2. The casting mold for a gearbox housing according to claim 1, characterized in that: The casting mechanism (1) includes a heat preservation tank (101) and a liquid lifting pipe (104). A feeding pipe (102) is fixedly connected to the side surface of the heat preservation tank (101). A ventilation pipe (103) is fixedly connected to the side surface of the heat preservation tank (101). The side surface of the ventilation pipe (103) is fixedly connected to the top end of the support structure (4). A load-bearing plate (105) is fixedly connected to the top end of the heat preservation tank (101). A cushion block (111) is fixedly connected to the top end of the load-bearing plate (105). The side surface of the liquid lifting pipe (104) is fixedly connected to the side surface of the heat preservation tank (101).

3. The casting mold of a gearbox housing according to claim 2, characterized in that: A lower mold (106) is fixedly connected to the top end of the cushion block (111). A moving rod (109) is fixedly connected to the top end of the cushion block (111). The side surface of the moving rod (109) is connected to the side surface of the lower mold (106). An inner pressure block (108) is fixedly connected to the inner side of the lower mold (106). An upper mold (107) is connected to the top end of the lower mold (106). A fixing groove (110) is formed at the bottom end of the lower mold (106). The inner side of the fixing groove (110) is fixedly connected to the side surface of the temperature control mechanism (3). The bottom end of the lower mold (106) is fixedly connected to the top end of the liquid lifting pipe (104).

4. A casting mold for a gearbox housing according to claim 1, characterized in that: On the side of the sliding plate (21), an installation groove (212) is formed. On the side of the installation groove (212), a bearing (211) is fixedly connected. Inside the bearing (211), an auxiliary disc (231) is fixedly connected. On the side of the auxiliary disc (231), a connecting plate (232) is fixedly connected. The side of the connecting plate (232) is connected to the inside of the power disc (23). On the side of the power disc (23), a rotating rod (234) is fixedly connected. At the top of the rotating rod (234), a reciprocating motor (233) is fixedly connected. On the side of the reciprocating motor (233), a support plate (24) is fixedly connected. At the bottom end of the pressing rod (22), a sealing plate (221) is fixedly connected.

5. The casting mold for a gearbox housing according to claim 4, characterized in that: On the side of the support plate (24), an I-shaped sliding rail (241) is fixedly connected. On the side of the I-shaped sliding rail (241), a T-shaped sliding plate (242) is connected. The side of the T-shaped sliding plate (242) is fixedly connected to the side of the sliding plate (21). On the side of the support plate (24), a sliding groove (244) is formed. The inside of the sliding groove (244) is connected to the side of the follower disc (243). The side of the follower disc (243) is fixedly connected to the side of the sliding plate (21). The side of the support plate (24) is connected to the side of the rotating rod (234).

6. The casting mold for a gearbox housing according to claim 1, characterized in that: The temperature control mechanism (3) includes a connection head (301) and a sliding disc (302). Inside the connection head (301), a connection wire (303) is fixedly connected. At the top of the connection wire (303), a heating resistor (306) is fixedly connected. The side of the heating resistor (306) is fixedly connected to the inside of the fixing groove (110). Inside the connection head (301), a resistor plate (305) is fixedly connected. The side of the resistor plate (305) is connected to the inside of the sliding disc (302). On the side of the sliding disc (302), an auxiliary rod (304) is fixedly connected. The top of the auxiliary rod (304) is fixedly connected to the side of the follower disc (243).

7. The casting mold for a gearbox housing according to claim 1, characterized in that: The support structure (4) includes a fixing plate (401) and a storage tank (404). At the bottom end of the fixing plate (401), a support leg (402) is fixedly connected. On the side of the support leg (402), a fixing ring (403) is fixedly connected. The side of the fixing ring (403) is fixedly connected to the side of the storage tank (404). The inside of the storage tank (404) is connected to the side of the sealing plate (221). At the bottom end of the storage tank (404), an air outlet pipe (405) is fixedly connected. The side of the air outlet pipe (405) is fixedly connected to the side of the ventilation pipe (103).

8. The casting mold for a gearbox housing according to claim 1, characterized in that: At the bottom end of the micro motor (506), a rotating shaft (505) is fixedly connected. On the side of the rotating shaft (505), a rotating ring (504) is fixedly connected. The side of the rotating ring (504) is fixedly connected to the side of the inner sealing frame (502). On the side of the inner sealing frame (502), a sponge block (503) is fixedly connected. The side of the outer sealing pipe (501) is fixedly connected to the side of the air outlet pipe (405).

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