Continuous drawing die for central column of gear box cover and use method of continuous drawing die

Abstract

The invention discloses a continuous drawing die for a central column of a gearbox cover and a using method, and relates to the technical field of drawing dies, the continuous drawing die comprises a female die, a bottom plate is installed at the bottom of the female die, a lifting plate is movably installed on the outer side of a guide column, and a male die is installed at the top of the lifting plate in a penetrating mode; and pipe bending parts are symmetrically installed at the top of the male die in a penetrating mode, one end of each pipe bending part penetrates through the top of the male die, a first three-way pipe is installed at the output end of each pipe bending part, a limiting block is installed at the top of the male die in a penetrating mode, a water tank is installed at the top of the bottom plate, and a water conveying mechanism is arranged at the top of the water tank. The water pump component pumps water in the water tank into the bent pipe component to absorb heat in the male die, and meanwhile, the heat absorption pipe component absorbs heat in the female die, so that heat generated when the male die stretches the gearbox cover is cooled, the expansion rate of the male die and the female die due to too high temperature is reduced, and the service life of the gearbox cover is prolonged. Therefore, the stretching precision error of the gear box cover is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of stretching dies, and particularly to a continuous stretching die for a central column of a gearbox cover and a using method thereof. Background Art

[0002] The central column of the gearbox cover is a component that supports the gear shaft in the gearbox. The gearbox cover and the central column are generally integrally formed. The quality of the central column of the gearbox cover affects the service life of the gearbox. After the gearbox cover is produced, performance tests are generally required, including tensile tests on the central column of the gearbox cover. When the stretching die stretches the product, frictional heat is easily generated. When the frictional heat accumulates, the temperature of the die is likely to be too high, causing thermal expansion of the die, thereby affecting the stretching accuracy of the product.

[0003] The defects of the existing stretching dies are as follows: 1. The prior art KR1020150122890A discloses a die device for direct tensile strength tests and a tensile strength test method using the same. This technology does not have a structure for cooling the stretching die. When the stretching die frequently stretches the product, heat is easily generated due to friction and extrusion. When the heat is too high, the die is likely to expand, affecting the stretching accuracy of the product. Therefore, a continuous stretching die for the central column of the gearbox cover that can cool the punch and die of the stretching die is needed to solve this problem.

[0004] 2. The prior art KR1020040061729A discloses a multi-functional stretching die automatic forming process and its automatic forming device. When stretching the product, the product directly contacts the inner wall of the die, and frictional heat is easily generated. And when injecting lubricating oil between the product and the die to reduce frictional heat, the lubricating oil will be lost along with the product, resulting in the need to frequently add lubricating oil, wasting lubricating oil and having low stretching efficiency. Therefore, a continuous stretching die for the central column of the gearbox cover that can reduce the loss rate of the lubricating oil in the die and at the same time reduce the frictional heat between the product and the die during product stretching is needed to solve this problem.

[0005] 3. The prior art US6006578A discloses a die for stretching and forming sheet metal parts. When cooling the die by passing flowing water through the inside of the die, impurities in the water are easily adhered to the inner wall of the channel, resulting in a decrease in the heat transfer efficiency of the die to water, thereby affecting the cooling of the die. Therefore, a continuous stretching die for the central column of the gearbox cover that can cool the die by passing water and clean the impurities in the water channel is needed to solve this problem.

[0006] 4. The prior art CN104785636B discloses a stretching die. If a channel is provided to be introduced into the die, the process of machining the channel in the die is troublesome and the machining cost is high. Therefore, a continuous stretching die for the central column of a gearbox cover is needed, which can cool the die by introducing water flow and has a simple and low-cost process for arranging a water channel in the die to solve this problem. Summary of the Invention

[0007] An object of the present application is to provide a continuous stretching die for the central column of a gearbox cover and a using method, which can solve the technical problems proposed in the prior art.

[0008] To achieve the above object, the present invention provides the following technical solution: A continuous stretching die for the central column of a gearbox cover, including a female die, a bottom plate and a lifting plate. The bottom of the female die is installed with a bottom plate, the top of the bottom plate is installed with a controller component, the top of the female die is symmetrically installed with a plurality of guide posts, the outside of the guide posts is movably installed with a lifting plate, the top of the lifting plate is penetrated and installed with a male die, the top of the male die is symmetrically penetrated and installed with elbow pipe components, and one end of the elbow pipe component penetrates the top of the male die. The output end of the elbow pipe component is installed with a tee pipe one, and the top of the male die is penetrated and installed with a limit block; The top of the bottom plate is installed with a water tank, and a water conveying mechanism is arranged on the top of the water tank.

[0009] Preferably, the input end at the top of the water tank is installed with a first water inlet pipe component, the input end of the first water inlet pipe component is installed with a first manual valve, the output end on the front of the water tank is installed with a water outlet pipe component, the output end of the water outlet pipe component is installed with a second manual valve, and a plurality of heat absorption pipe components are installed on one side of the water tank, and the heat absorption pipe components are located inside the female die.

[0010] Preferably, the water conveying mechanism includes a water pump component, a water suction pipe, a tee pipe two, a first water delivery hose, a second water inlet pipe component and a second water delivery hose. The water pump component is installed on the top of the water tank and is electrically connected to the controller component. The input end of the water pump component is installed with a water suction pipe, one end of the water suction pipe penetrates the inner wall of the top of the water tank, the output end of the water pump component is installed with a tee pipe two, the output end of the tee pipe two is installed with a first water delivery hose, the output end of the first water delivery hose is connected to the input end of the elbow pipe component, a plurality of second water inlet pipe components are installed on the top of the water tank, the input end of the second water inlet pipe component is installed with a second water delivery hose, and the input end of the second water delivery hose is connected to the output end of one side of the tee pipe one.

[0011] Preferably, a support ring is installed on the inner wall of the female die, a plurality of springs are installed on the top of the support ring, and one end of the spring is installed with a lifting ring, and the lifting ring is located inside the female die.

[0012] Preferably, a round hole is penetrated through the top of the bottom plate, and the round hole is communicated with the female die. A bottom frame is installed at the bottom of the bottom plate. A plurality of electric telescopic rod components I are installed on the inner wall of the bottom of the bottom frame, and the electric telescopic rod components I are electrically connected with the controller component. A top ring is installed at the output end of the electric telescopic rod components I, and the top ring is located inside the round hole.

[0013] Preferably, two limiting rods are installed in parallel at the top of the female die. A guide frame is installed on the back of the female die. An electric telescopic rod component II is installed on the inner wall of the bottom of the guide frame, and the electric telescopic rod component II is electrically connected with the controller component. A push plate is installed at the output end of the electric telescopic rod component II.

[0014] Preferably, a liquid level sensor component is penetrated and installed on the back of the water tank, and the liquid level sensor component is electrically connected with the controller component. A temperature sensor component is penetrated and installed on the back of the water tank, and the temperature sensor component is electrically connected with the controller component.

[0015] Preferably, a cylinder body is installed at the top of the tee pipe I, and the cylinder body is communicated with the tee pipe I. A hydraulic cylinder component is installed at the top of the cylinder body, and the hydraulic cylinder component is electrically connected with the controller component. A piston rod is installed at the output end of the hydraulic cylinder component, and one end of the piston rod penetrates through the inner wall of the top of the cylinder body. A soft rubber is installed on the outer side of the piston rod, and a sponge sleeve is installed on the outer side of the soft rubber.

[0016] Preferably, the usage method of the continuous drawing die for the central column of the gearbox cover is as follows: S1. Place the gearbox cover on the guide frame, and then push the gearbox cover forward through the push plate, so that the central column of the gearbox cover is inserted into the inner side of the lifting ring in the female die. Then, the male die moves downward to draw the central column of the gearbox cover. S2. The lifting ring moves downward as the central column of the gearbox cover is drawn, reducing the frictional heat with the central column of the gearbox cover. S3. Subsequently, the top ring moves upward to push out the central column of the gearbox cover. S4. Drive the soft rubber to move downward into the elbow pipe component through the hydraulic cylinder component, which can clean the inner wall of the elbow pipe component, avoiding the adhesion of impurities on the inner wall of the elbow pipe component and affecting the transfer of heat from the elbow pipe component to the water in the elbow pipe component.

[0017] Preferably, the following steps are further included in S2: S21. The water pump component pumps the water in the water tank into the elbow pipe component to absorb the heat in the male die. At the same time, the heat absorption pipe component absorbs the heat in the female die.

[0018] Compared with the prior art, the beneficial effects of the present invention are: The water pump component of the present invention sucks the water in the water tank into the elbow component to absorb the heat in the punch, and at the same time, the heat absorption pipe component absorbs the heat in the die, so as to cool the heat generated when the punch stretches the gearbox cover, reduce the expansion rate of the punch and the die caused by excessive temperature, and thus reduce the stretching precision error of the gearbox cover.

[0019] In the present invention, the lifting ring moves downward as the central column of the gearbox cover is stretched, reducing the frictional heat with the central column of the gearbox cover. At the same time, the lubricating oil between the lifting ring and the die can reduce friction, and the lubricating oil does not come into direct contact with the central column of the gearbox cover, with less loss and no need to frequently add lubricating oil.

[0020] In the present invention, the hydraulic cylinder component drives the soft rubber to move downward into the elbow component to clean the inner wall of the elbow component, avoiding the adhesion of impurities on the inner wall of the elbow component from affecting the transfer of heat from the elbow component to the water in the elbow component.

[0021] In the present invention, the limiting block can provide support inside the punch, preventing the punch from being indented inward due to pressure when stretching the gearbox cover, thus ensuring the stretching precision of the central column of the gearbox cover by the punch. And the limiting block can be taken out, facilitating the installation and disassembly of the elbow. Brief Description of the Drawings

[0022] Figure 1 is a perspective view of the present invention; Figure 2 is a schematic structural view of the die, water tank and bottom plate of the present invention; Figure 3 is a schematic structural view of the punch of the present invention; Figure 4 is a schematic structural view of the elbow component of the present invention; Figure 5 is a schematic structural view of the cylinder body of the present invention; Figure 6 is a schematic structural view of the water tank of the present invention; Figure 7 is a schematic structural view of the die of the present invention; Figure 8 is a schematic structural view of the support ring of the present invention; Figure 9 is a schematic structural view of the bottom frame of the present invention; Figure 10 is a flow chart of the usage method of the present invention.

[0023] In the figure: 1, female die; 2, bottom plate; 3, controller component; 4, guide pillar; 5, lifting plate; 6, male die; 7, elbow component; 8, first three-way pipe; 9, limit block; 10, water tank; 11, first water inlet pipe component; 12, first manual valve; 13, water outlet pipe component; 14, second manual valve; 15, water pump component; 16, water suction pipe; 17, second three-way pipe; 18, first water supply hose; 19, second water inlet pipe component; 20, second water supply hose; 21, heat absorption pipe component; 22, support ring; 23, spring; 24, lifting ring; 25, round hole; 26, bottom frame; 27, first electric telescopic rod component; 28, top ring; 29, limit rod; 30, guide frame; 31, second electric telescopic rod component; 32, push plate; 33, liquid level sensor component; 34, temperature sensor component; 35, cylinder body; 36, hydraulic cylinder component; 37, piston rod; 38, soft rubber; 39, sponge sleeve. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Please refer to Figure 1 , Figure 2 and Figure 3 , an embodiment provided by the present invention: a continuous drawing die for the central column of a gearbox cover It includes a female die 1, a bottom plate 2 and a lifting plate 5. The bottom of the female die 1 is installed with the bottom plate 2. The top of the bottom plate 2 is installed with a controller component 3. A plurality of guide posts 4 are symmetrically installed at the top of the female die 1. The outside of the guide posts 4 is movably installed with the lifting plate 5. The top of the lifting plate 5 is installed with a punch 6 through it. The top of the punch 6 is symmetrically installed with a bent pipe component 7 through it, and one end of the bent pipe component 7 penetrates the top of the punch 6. The output end of the bent pipe component 7 is installed with a tee pipe 1 8. The top of the punch 6 is installed with a limit block 9 through it. The female die 1 can provide an installation position for other components of the device and at the same time provide an insertion position for the punch 6. The bottom plate 2 can provide an installation position for the water tank 10 and the controller component 3. The controller component 3 can receive the signals of the liquid level sensor component 33 and the temperature sensor component 34, and at the same time can control the water pump component 15, the electric telescopic rod component 1 27, the electric telescopic rod component 2 31 and the hydraulic cylinder component 36. The guide posts 4 can provide guidance for the up and down movement of the lifting plate 5. The lifting plate 5 can drive the punch 6 to move up and down by moving up and down. The punch 6 can stretch the central column of the gearbox cover entering the inside of the female die 1 below by moving down. The bent pipe component 7 can provide a flow space for the water in the water tank 10, and thus can transfer the heat of the punch 6 to the water inside the bent pipe component 7 to achieve the cooling of the punch 6. The tee pipe 1 8 plays a role in connecting the bent pipe component 7 and the water supply hose 2 20. The limit block 9 can prevent the punch 6 from being recessed inward due to pressure, and the limit block 9 can be taken out to facilitate the installation and disassembly of the bent pipe component 7.

[0028] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 ,an embodiment provided by the present invention: a continuous stretching die for the central column of a gearbox cover; It includes a water tank 10 and a water delivery mechanism. The water tank 10 is installed on the top of the bottom plate 2, and a water delivery mechanism is arranged on the top of the water tank 10. The water delivery mechanism includes a water pump component 15, a water suction pipe 16, a tee pipe two 17, a water delivery hose one 18, a water inlet pipe component two 19, and a water delivery hose two 20. The water pump component 15 is installed on the top of the water tank 10 and is electrically connected to the controller component 3. The input end of the water pump component 15 is installed with the water suction pipe 16, one end of the water suction pipe 16 penetrates the inner wall of the top of the water tank 10, the output end of the water pump component 15 is installed with the tee pipe two 17, the output end of the tee pipe two 17 is installed with the water delivery hose one 18, the output end of the water delivery hose one 18 is connected to the input end of the elbow pipe component 7. A plurality of water inlet pipe components two 19 are installed on the top of the water tank 10, the input end of the water inlet pipe component two 19 is installed with the water delivery hose two 20, and the input end of the water delivery hose two 20 is connected to one side output end of the tee pipe one 8. The water tank 10 functions to store water. The water pump component 15 can convert electrical energy into kinetic energy, thereby transporting the water in the water tank 10 into the elbow pipe component 7. The water suction pipe 16 can provide a transmission path for the water in the water tank 10 to enter the water pump component 15. The tee pipe two 17 can provide a transmission path for the water in the water pump component 15 to enter the water delivery hose one 18. The water delivery hose one 18 can provide a transmission path for the water in the tee pipe two 17 to enter the elbow pipe component 7. The water inlet pipe component two 19 can provide a transmission path for the water in the water delivery hose two 20 to enter the water tank 10. The water delivery hose two 20 can provide a transmission path for the water in the tee pipe one 8 to enter the water inlet pipe component two 19.

[0029] Please refer to Figure 1 and Figure 2 , an embodiment provided by the present invention: a continuous drawing die for the central column of a gearbox cover; It includes a water inlet pipe component one 11 and a water outlet pipe component 13. The input end of the top of the water tank 10 is installed with the water inlet pipe component one 11, the input end of the water inlet pipe component one 11 is installed with a manual valve one 12, the front output end of the water tank 10 is installed with the water outlet pipe component 13, the output end of the water outlet pipe component 13 is installed with a manual valve two 14. A plurality of heat absorption pipe components 21 are installed on one side of the water tank 10, and the heat absorption pipe components 21 are located inside the female die 1. The water inlet pipe component one 11 can provide an entry path for the external water to enter the water tank 10. The manual valve one 12 functions to control the on-off of the water inlet pipe component one 11. The water outlet pipe component 13 can provide a transmission path for the water in the water tank 10 to be discharged to the outside. The manual valve two 14 functions to control the on-off state of the water outlet pipe component 13. The heat absorption pipe components 21 can transfer the heat of the female die 1 to the water inside the heat absorption pipe components 21, thereby cooling the female die 1.

[0030] Please refer to Figure 1 , Figure 2 , Figure 7 , Figure 8 and Figure 9, An embodiment provided by the present invention: A continuous drawing die for the central column of a gearbox cover; It includes a support ring 22 and a bottom frame 26. A support ring 22 is installed on the inner wall of the female die 1. A plurality of springs 23 are installed on the top of the support ring 22. One end of the spring 23 is installed with a lifting ring 24, and the lifting ring 24 is located inside the female die 1. A round hole 25 is penetrated and opened on the top of the bottom plate 2, and the round hole 25 communicates with the female die 1. The bottom of the bottom plate 2 is installed with a bottom frame 26. A plurality of electric telescopic rod components one 27 are installed on the inner wall of the bottom of the bottom frame 26, and the electric telescopic rod components one 27 are electrically connected to the controller component 3. The output end of the electric telescopic rod components one 27 is installed with a top ring 28, and the top ring 28 is located inside the round hole 25. The support ring 22 can provide an installation position for the spring 23. The spring 23 can exert an upward supporting force on the lifting ring 24, so that the depressed lifting ring 24 can move upward after the pressure disappears. The lifting ring 24 can move downward as the central column of the gearbox cover is drawn, and there is lubricating oil between the lifting ring 24 and the inner wall of the female die 1, reducing the frictional heat between the lifting ring 24 and the female die 1, avoiding direct contact between the central column of the gearbox cover and the inner wall of the female die 1, thereby reducing the frictional heat between the central column of the gearbox cover and the female die 1. The round hole 25 can provide a moving space for the top ring 28. The bottom frame 26 can provide an installation position for the electric telescopic rod components one 27. The electric telescopic rod components one 27 can convert electrical energy into kinetic energy, thereby driving the top ring 28 to move up and down. The top ring 28 can push the central column of the gearbox cover inside the lifting ring 24 upward out of the female die 1 through upward movement, realizing the demolding of the gearbox cover.

[0031] Please refer to Figure 1 and Figure 2 , An embodiment provided by the present invention: A continuous drawing die for the central column of a gearbox cover; It includes a limiting rod 29 and a guiding frame 30. Two limiting rods 29 are installed in parallel on the top of the female die 1. The guiding frame 30 is installed on the back of the female die 1. An electric telescopic rod component two 31 is installed on the inner wall of the bottom of the guiding frame 30, and the electric telescopic rod component two 31 is electrically connected to the controller component 3. The output end of the electric telescopic rod component two 31 is installed with a push plate 32. The limiting rod 29 can provide a moving guide for the gearbox cover. The guiding frame 30 can provide a guide for the gearbox cover. The electric telescopic rod component two 31 can convert electrical energy into kinetic energy, thereby driving the push plate 32 to move back and forth. The push plate 32 can push the gearbox cover forward through forward movement.

[0032] Please refer to Figure 1 , Figure 2 and Figure 6 , An embodiment provided by the present invention: A continuous drawing die for the central column of a gearbox cover; It includes a liquid level sensor component 33 and a temperature sensor component 34. The liquid level sensor component 33 is installed through the back of the water tank 10 and is electrically connected to the controller component 3. The temperature sensor component 34 is installed through the back of the water tank 10 and is electrically connected to the controller component 3. The liquid level sensor component 33 can measure the water level height inside the water tank 10, and the temperature sensor component 34 can measure the temperature of the water inside the water tank 10.

[0033] Please refer to Figure 1 、 Figure 2 and Figure 5 , an embodiment provided by the present invention: a continuous drawing die for the central column of a gearbox cover; It includes a cylinder body 35. The cylinder body 35 is installed at the top of the tee pipe one 8 and is in communication with the tee pipe one 8. A hydraulic cylinder component 36 is installed at the top of the cylinder body 35 and is electrically connected to the controller component 3. A piston rod 37 is installed at the output end of the hydraulic cylinder component 36, and one end of the piston rod 37 penetrates through the inner wall of the top of the cylinder body 35. A soft rubber 38 is installed on the outer side of the piston rod 37, and a sponge sleeve 39 is installed on the outer side of the soft rubber 38. The cylinder body 35 can provide a storage space for the soft rubber 38. The hydraulic cylinder component 36 can convert hydraulic energy into kinetic energy, thereby driving the piston rod 37 to move up and down. The piston rod 37 can drive the soft rubber 38 to move up and down through the up and down movement. The soft rubber 38 can bend into the elbow component 7 through the downward movement, so that the sponge sleeve 39 on the outer side of the soft rubber 38 can clean the inner wall of the elbow component 7.

[0034] The usage method of the continuous drawing die for the central column of the gearbox cover is as follows: S1. Place the gearbox cover on the guide frame 30, and then push the gearbox cover forward through the push plate 32, so that the central column of the gearbox cover is inserted into the inner side of the lifting ring 24 in the concave die 1. Then, the punch 6 moves downward to stretch the central column of the gearbox cover; S2. The lifting ring 24 moves downward as the central column of the gearbox cover is stretched, reducing the frictional heat with the central column of the gearbox cover; S3. Subsequently, the top ring 28 moves upward to push out the central column of the gearbox cover; S4. Driving the soft rubber 38 to move downward into the elbow component 7 through the hydraulic cylinder component 36 can clean the inner wall of the elbow component 7, avoiding the adhesion of impurities on the inner wall of the elbow component 7 from affecting the transfer of heat from the elbow component 7 to the water in the elbow component 7.

[0035] In S2, the following steps are further included: S21. The water pump component 15 pumps the water in the water tank 10 into the elbow component 7 to absorb the heat in the punch 6. At the same time, the heat absorption pipe component 21 absorbs the heat in the concave die 1.

[0036] Working principle: Before using the continuous drawing die for the central column of the gearbox cover, it should be checked first whether there are any problems affecting its use. The gearbox cover is placed on the guide frame 30, and then the gearbox cover is pushed forward by the push plate 32, so that the central column of the gearbox cover is inserted into the inner side of the lifting ring 24 in the concave die 1. Then, the punch 6 moves downward to draw the central column of the gearbox cover. The lifting ring 24 moves downward along with the drawing of the central column of the gearbox cover, reducing the frictional heat with the central column of the gearbox cover. Subsequently, the top ring 28 moves upward to push out the central column of the gearbox cover. The hydraulic cylinder component 36 drives the soft rubber 38 to move downward into the elbow component 7 to clean the inner wall of the elbow component 7, avoiding the adhesion of impurities on the inner wall of the elbow component 7 from affecting the transfer of heat from the elbow component 7 to the water in the elbow component 7. The water pump component 15 pumps the water in the water tank 10 into the elbow component 7 to absorb the heat in the punch 6. At the same time, the heat absorption pipe component 21 absorbs the heat in the concave die 1.

[0037] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention, and any reference signs in the claims should not be regarded as limiting the rights involved.

Claims

1. A continuous drawing die for the central column of a gearbox cover, characterized in that: It includes a female die (1), a bottom plate (2) and a lifting plate (5). The bottom of the female die (1) is installed with the bottom plate (2). The top of the bottom plate (2) is installed with a controller component (3). A plurality of guide columns (4) are symmetrically installed at the top of the female die (1). The lifting plate (5) is movably installed on the outside of the guide columns (4). The top of the lifting plate (5) is penetrated and installed with a male die (6). The top of the male die (6) is symmetrically penetrated and installed with elbow pipe components (7), and one end of the elbow pipe component (7) penetrates the top of the male die (6). The output end of the elbow pipe component (7) is installed with a tee pipe one (8). The top of the male die (6) is penetrated and installed with a limit block (9). The top of the bottom plate (2) is installed with a water tank (10). The top of the water tank (10) is provided with a water conveyance mechanism.

2. The continuous drawing die for the central column of a gearbox cover according to claim 1, characterized in that: The top input end of the water tank (10) is installed with a water inlet pipe component one (11). The input end of the water inlet pipe component one (11) is installed with a hand valve one (12). The front output end of the water tank (10) is installed with a water outlet pipe component (13). The output end of the water outlet pipe component (13) is installed with a hand valve two (14). A plurality of heat absorption pipe components (21) are installed on one side of the water tank (10), and the heat absorption pipe components (21) are located inside the female die (1).

3. A continuous drawing die for the central column of a gearbox cover according to claim 1, characterized in that: The water conveyance mechanism includes a water pump component (15), a water suction pipe (16), a tee pipe two (17), a water delivery hose one (18), a water inlet pipe component two (19) and a water delivery hose two (20). The water pump component (15) is installed on the top of the water tank (10), and the water pump component (15) is electrically connected to the controller component (3). The input end of the water pump component (15) is installed with the water suction pipe (16). One end of the water suction pipe (16) penetrates the top inner wall of the water tank (10). The output end of the water pump component (15) is installed with the tee pipe two (17). The output end of the tee pipe two (17) is installed with the water delivery hose one (18). The output end of the water delivery hose one (18) is connected to the input end of the elbow pipe component (7). A plurality of water inlet pipe components two (19) are installed on the top of the water tank (10). The input end of the water inlet pipe component two (19) is installed with the water delivery hose two (20), and the input end of the water delivery hose two (20) is connected to the side output end of the tee pipe one (8).

4. The continuous drawing die for the central column of a gearbox cover according to claim 1, characterized in that: A support ring (22) is installed on the inner wall of the female die (1). A plurality of springs (23) are installed on the top of the support ring (22). One end of the spring (23) is installed with a lifting ring (24), and the lifting ring (24) is located inside the female die (1).

5. The continuous drawing die for the central column of a gearbox cover according to claim 1, characterized in that: A round hole (25) is penetrated and opened at the top of the bottom plate (2), and the round hole (25) communicates with the female die (1). The bottom of the bottom plate (2) is installed with a bottom frame (26). A plurality of electric telescopic rod components one (27) are installed on the bottom inner wall of the bottom frame (26), and the electric telescopic rod components one (27) are electrically connected to the controller component (3). The output end of the electric telescopic rod component one (27) is installed with a top ring (28), and the top ring (28) is located inside the round hole (25).

6. The continuous drawing die for the central column of a gearbox cover according to claim 1, characterized in that: Two limiting rods (29) are installed in parallel at the top of the female die (1). A guide frame (30) is installed on the back of the female die (1). An electric telescopic rod component two (31) is installed on the inner wall of the bottom of the guide frame (30), and the electric telescopic rod component two (31) is electrically connected to the controller component (3). A push plate (32) is installed at the output end of the electric telescopic rod component two (31).

7. A continuous drawing die for the central column of a gearbox cover according to claim 1, characterized in that: A liquid level sensor component (33) is installed through the back of the water tank (10), and the liquid level sensor component (33) is electrically connected to the controller component (3). A temperature sensor component (34) is installed through the back of the water tank (10), and the temperature sensor component (34) is electrically connected to the controller component (3).

8. The continuous drawing die for the central column of a gearbox cover according to claim 1, characterized in that: A cylinder body (35) is installed at the top of the tee pipe one (8), and the cylinder body (35) is communicated with the tee pipe one (8). A hydraulic cylinder component (36) is installed at the top of the cylinder body (35), and the hydraulic cylinder component (36) is electrically connected to the controller component (3). A piston rod (37) is installed at the output end of the hydraulic cylinder component (36), and one end of the piston rod (37) penetrates through the inner wall of the top of the cylinder body (35). A soft rubber (38) is installed on the outer side of the piston rod (37), and a sponge sleeve (39) is installed on the outer side of the soft rubber (38).

9. The usage method of a continuous drawing die for the central column of a gearbox cover according to any one of claims 1-8, characterized in that: The usage method of the continuous drawing die for the central column of the gearbox cover is as follows: S1. Place the gearbox cover on the guide frame (30), and then push the gearbox cover forward through the push plate (32) so that the central column of the gearbox cover is inserted into the inner side of the lifting ring (24) in the female die (1). Then, the punch (6) moves downward to draw the central column of the gearbox cover; S2. The lifting ring (24) moves downward as the central column of the gearbox cover is drawn, reducing the frictional heat with the central column of the gearbox cover; S3. Subsequently, the top ring (28) moves upward to push out the central column of the gearbox cover; S4. Drive the soft rubber (38) to move downward into the elbow pipe component (7) through the hydraulic cylinder component (36) to clean the inner wall of the elbow pipe component (7), avoiding the adhesion of impurities on the inner wall of the elbow pipe component (7) from affecting the transfer of heat from the elbow pipe component (7) to the water in the elbow pipe component (7).

10. The usage method of a continuous drawing die for the central column of a gearbox cover according to claim 9, characterized in that: The following steps are also included in S2: S21. The water pump component (15) sucks the water in the water tank (10) into the elbow pipe component (7) to absorb the heat in the punch (6), and at the same time, the heat absorption pipe component (21) absorbs the heat in the female die (1).

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