A one-piece rear axle housing forming die

Abstract

This utility model discloses an integral rear axle housing forming mold, specifically relating to the field of advanced manufacturing technology. It includes a forging mold device, comprising a base, a forging press fixedly connected to the top of the base, connecting columns fixedly connected to both sides of the base, a top cover penetrating the end of each connecting column away from the base and slidably connected to it, a mold disposed at the end of the forging press away from the base, and an extrusion table fixedly connected to the side of the top cover near the mold. When a three-phase asynchronous motor is started, its fixed output shaft drives a threaded rod to rotate. Because the threaded rod penetrates a threaded hole inside the base plate and forms a threaded engagement, it tightly wraps around the protruding part of the mold, causing the forging to become stuck in the cavity and unable to be ejected smoothly, or requiring strong manual hammering to separate it after ejection. In severe cases, this can cause scratches or even deformation on the surface of the forging, increasing maintenance costs and production downtime.

Description

Technical Field

[0001] This utility model relates to the field of advanced manufacturing technology, and more specifically, to an integral rear axle housing molding die. Background Technology

[0002] The integral rear axle housing forming die is a specialized forging and forming process equipment used to manufacture the integral rear axle housing, a key component of the automotive chassis. It belongs to the high-end mold technology in materials processing engineering, typically made from high-strength hot-work die steel through precision machining. Its cavity precisely forms the complex three-dimensional shape of the rear axle housing. Under immense pressure, the metal billet, heated to a plastic state, undergoes plastic deformation within the die cavity, thus forming a high-strength axle housing blank with dense metal flow lines in a single process. This process not only efficiently and precisely imparts the final geometry to the part, but more importantly, it significantly improves the product's mechanical properties. The continuous and complete flow lines of the forged metal enable the rear axle housing to withstand complex alternating loads, impacts, and torques during vehicle operation, ensuring the reliability of the drive axle assembly and driving safety.

[0003] In the process of realizing this utility model, the inventors discovered the following problems with the prior art:

[0004] Currently, the mold parts of the existing integral rear axle housing forming molds will tightly wrap around the protruding part of the mold when the high-temperature forging shrinks after forging. This will cause the forging to get stuck in the cavity and unable to be ejected smoothly, or it will require strong manual knocking to separate it after ejection. In severe cases, it will cause scratches or even deformation on the surface of the forging, increasing maintenance costs and production interruption time.

[0005] Therefore, an integral rear axle housing molding die is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an integral rear axle housing molding die to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an integral rear axle housing forming mold, including a forging mold device, the forging mold device including a base, a forging press fixedly connected to the top of the base, connecting columns fixedly connected to both sides of the base, a top cover penetrating the end of the connecting column away from the base and slidably connected to the connecting column, a mold being provided at the end of the forging press away from the base, and an extrusion table being fixedly connected to the side of the top cover close to the mold;

[0008] It also includes a demolding device for secondary demolding of the molded parts;

[0009] Release device, used to release the mold part from the mold;

[0010] The demolding device includes a threaded rod, and a transmission belt is fitted on the circumferential surface of the threaded rod and fixedly connected to the threaded rod.

[0011] Preferably, the demolding device includes a three-phase asynchronous motor, a threaded rod fixedly connected to the fixed output shaft of the three-phase asynchronous motor, a connecting plate rotatably connected to the circumferential surface of the threaded rod away from the three-phase asynchronous motor, a base plate provided on the side of the connecting plate near the threaded rod, a cylindrical plate fixedly connected to the side of the base plate near the connecting plate, an ejector column fixedly connected to the side of the connecting plate away from the base plate, a rotating plate fixedly connected to one end of the connecting plate, a hook plate hinged to the circumferential surface of the rotating plate, a fixed column provided at the tail of the hook plate, a spring fixedly connected to the top of the hook plate, and a top plate fixedly connected to the end of the ejector column away from the connecting plate.

[0012] Preferably, the threaded rod passes through the interior of the base plate on its circumferential surface and is rotatably connected to the connecting plate. The rotating plate has a threaded hole inside, and the cylindrical plate passes through the connecting plate on its circumferential surface and is slidably connected to the connecting plate.

[0013] Preferably, the detachment device further includes a pulley, a circular plate passing through the pulley and fixedly connected to the pulley, a half gear passing through the circumference of the circular plate and fixedly connected to the circular plate, a rack rotatably connected to the circumference of the half gear, a spring telescopic rod A fixedly connected to the end of the rack away from the half gear, a long plate provided on the outside of the rack, a spring telescopic rod B fixedly connected to the side of the rack away from the half gear, and a scraper fixedly connected to the end of the spring telescopic rod B away from the rack.

[0014] Preferably, the surface of the long plate is provided with a groove, and the end of the spring telescopic rod A away from the rack is fixedly connected to the inner wall of the groove in the long plate.

[0015] Preferably, the two ends of the transmission belt are respectively fitted onto the circumferential surface of the threaded rod and the inner circumferential surface of the pulley.

[0016] Preferably, the ejector column is provided with a connecting plate and a top plate at both ends, and is slidably connected to the top plate. The bottom of the top plate is provided on the top surface of the forging table. The end of the ejector column away from the connecting plate passes through the forging table and is slidably connected to the ejector column. A wedge plate is provided above the hook plate. The wedge plate is fixedly connected to the top surface inside the forging table. One end of the fixing column is fixedly connected to one side of the bottom plate.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] 1. Compared with the existing technology, this integrated rear axle housing forming mold is started by a three-phase asynchronous motor, and its fixed output shaft drives the threaded rod to rotate. Since the threaded rod passes through the threaded hole opened inside the base plate and forms a threaded engagement with it, it will tightly wrap around the protruding part of the mold, causing the forging to get stuck in the cavity and unable to be ejected smoothly, or after ejection, it needs to be manually and forcefully knocked to separate it. In severe cases, it will cause scratches or even deformation on the surface of the forging, increasing maintenance costs and production interruption time.

[0019] 2. Compared with the existing technology, when the threaded rod rotates, it drives the pulley to rotate synchronously through the transmission belt sleeved on its circumference. This causes the circular plate fixedly connected inside the pulley to rotate as well, thereby driving the scraper to separate the molded part after it has been forged on the forging table. This achieves fast and stable separation of the molded part from the mold, significantly improving demolding efficiency and consistency, ensuring product quality and production safety, and extending the service life of the mold. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a three-dimensional structural diagram of the base and forging table of this utility model.

[0022] Figure 3 This is a three-dimensional structural diagram of the three-phase asynchronous motor and threaded rod of this utility model.

[0023] Figure 4 This is a three-dimensional structural diagram of the half gear and rack of this utility model.

[0024] Figure 5 This is a three-dimensional structural diagram of the spring telescopic rod B and the scraper of this utility model.

[0025] The attached figures are labeled as follows: 1. Forging die device; 101. Base; 102. Forging press; 103. Connecting column; 104. Die; 105. Extrusion table; 106. Top cover; 2. Demolding device; 201. Three-phase asynchronous motor; 202. Threaded rod; 203. Base plate; 204. Connecting plate; 205. Cylindrical plate; 206. Ejector column; 207. Rotating plate; 208. Hook plate; 209. Fixed column; 210. Spring; 211. Top plate; 3. Detachment device; 301. Transmission belt; 302. Pulley; 303. Circular plate; 304. Half gear; 305. Rack; 306. Spring telescopic rod A; 307. Long plate; 308. Spring telescopic rod B; 309. Scraper. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] As attached Figures 1 to 5 The integrated rear axle housing forming mold shown includes a forging mold device 1. The forging mold device 1 includes a base 101. A forging press 102 is fixedly connected to the top of the base 101. Connecting columns 103 are fixedly connected to both sides of the base 101. A top cover 106 passes through the end of the connecting column 103 away from the base 101 and is slidably connected to the connecting column 103. A mold 104 is provided at the end of the forging press 102 away from the base 101. An extrusion table 105 is fixedly connected to the side of the top cover 106 near the mold 104.

[0029] It also includes a demolding device 2, used for secondary demolding of the mold parts;

[0030] Release device 3 is used to release the mold part from the mold 104;

[0031] The demolding device 2 includes a threaded rod 202, on which a transmission belt 301 is fitted and fixedly connected.

[0032] The demolding device 2 includes a three-phase asynchronous motor 201. A threaded rod 202 is fixedly connected to the fixed output shaft of the three-phase asynchronous motor 201. A connecting plate 204 is rotatably connected to the circumferential surface of the threaded rod 202 away from the three-phase asynchronous motor 201. A base plate 203 is provided on the side of the connecting plate 204 near the threaded rod 202. A cylindrical plate 205 is fixedly connected to the side of the base plate 203 near the connecting plate 204. An ejector column 206 is fixedly connected to the side of the connecting plate 204 away from the base plate 203. One end of the connecting plate 204 is fixedly connected to a rotating plate 207. A hook plate 208 is hinged on the circumferential surface of the rotating plate 207. A fixing post 209 is provided at the tail of the hook plate 208. A spring 210 is fixedly connected to the top of the hook plate 208. A top plate 211 is fixedly connected to the end of the ejector post 206 away from the connecting plate 204. The above design is advantageous because by setting the hook plate 208 hinged on the circumferential surface of the rotating plate 207, the hook plate 208 can rotate through the hinged rotating plate 207.

[0033] The threaded rod 202 passes through the interior of the base plate 203 on its circumferential surface and is rotatably connected to the connecting plate 204. The rotating plate 207 has a threaded hole inside. The cylindrical plate 205 passes through the connecting plate 204 on its circumferential surface and is slidably connected to the connecting plate 204. The above design is advantageous because by setting the threaded hole inside the rotating plate 207, the threaded rod 202 can drive the rotating plate 207 to move vertically through the threaded hole inside the rotating plate 207.

[0034] The ejector post 206 has connecting plates 204 and top plates 211 at both ends, and is slidably connected to the top plates 211. The bottom of the top plates 211 is set on the top surface of the forging table 102. The end of the ejector post 206 away from the connecting plates 204 passes through the forging table 102 and is slidably connected to the ejector post 206. A wedge plate is set above the hook plate 208 and is fixedly connected to the top surface inside the forging table 102. One end of the fixing post 209 is fixedly connected to one side of the bottom plate 203. The above design is advantageous because by setting the connecting plates 204 and top plates 211 at both ends of the ejector post 206, the connecting plates 204 are displaced so that when they cooperate with the top plates 211 that slide through the ejector post 206, the ejector post 206 will eject the mold attached to the surface of the top plates 211.

[0035] Specifically: First, the three-phase asynchronous motor 201 is started, and its fixed output shaft drives the threaded rod 202 to rotate. Since the threaded rod 202 passes through the threaded hole inside the base plate 203 and forms a threaded engagement with it, the rotation of the threaded rod 202 pushes the connecting plate 204, which is rotatably connected to it, to move vertically. This displacement of the connecting plate 204 then causes the fixed column 209, which is fixedly connected to one side, to move vertically. This displacement of the fixed column 209 then causes the base plate 203 to move vertically. When the base plate 203 moves vertically, it drives the cylindrical plate 205 fixedly connected to it to move synchronously. This causes the cylindrical plate 205 to drive the top plate 211 to move vertically, thus pushing the top plate 211 out of the connection point between the mold and the forging table 102, preventing the mold from sticking to the surface of the forging table 102, thereby achieving the first demolding of the mold. Then, when the connecting plate 204 moves vertically, the top of the hook plate 208 fixedly connected to one side of the connecting plate 204 will touch the wedge set at the top of the hook plate 208. The plate, in turn, causes the hook plate 208 to rotate via the hinged rotating plate 207, thereby causing the fixed post 209 at its tail to disengage from the tail of the hook plate 208. This prevents the fixed post 209 from moving further, thus preventing the base plate 203 from moving further. As a result, the cylindrical plate 205, which is fixedly connected to the top of the base plate 203, stops moving after its first ejection, while the connecting plate 204 continues to move via the threaded rod 202. This movement of the connecting plate 204 causes the ejector plate, which is fixedly connected to the top of the connecting plate 204, to move. When the column 206 slides through the top surface of the forging table 102, it ejects the die attached to the surface of the mold 104, causing the die to detach from the mold 104. This achieves secondary demolding of the forged die, thus solving the problem that when the die shrinks after the high temperature of the forging cools down, it will tightly wrap around the protruding part of the mold 104, causing the forging to get stuck in the cavity and unable to be ejected smoothly, or requiring strong manual knocking to separate it after ejection. In severe cases, this can cause scratches or even deformation on the surface of the forging, increasing maintenance costs and production downtime.

[0036] Example 2

[0037] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 5 As shown below, see details:

[0038] In a preferred embodiment, an integral rear axle housing molding die, the release device 3 further includes a pulley 302, a circular plate 303 passing through the pulley 302 and fixedly connected to the pulley 302, a half gear 304 passing through the circumferential surface of the circular plate 303 and fixedly connected to the circular plate 303, a rack 305 rotatably connected to the circumferential surface of the half gear 304, a spring telescopic rod A306 fixedly connected to the end of the rack 305 away from the half gear 304, a long plate 307 provided on the outside of the rack 305, a spring telescopic rod B308 fixedly connected to the side of the rack 305 away from the half gear 304, and a scraper 309 fixedly connected to the end of the spring telescopic rod B308 away from the rack 305.

[0039] In a preferred embodiment, a groove is provided on the surface of the long plate 307, and the end of the spring telescopic rod A306 away from the rack 305 is fixedly connected to the inner wall of the groove provided on the long plate 307. The above design is advantageous because by setting the end of the spring telescopic rod A306 away from the rack 305 to be fixedly connected to the inner wall of the groove provided on the long plate 307, the rack 305 is pushed to move linearly along the groove provided on the surface of the long plate 307.

[0040] In a preferred embodiment, the two ends of the transmission belt 301 are respectively sleeved on the circumferential surface of the threaded rod 202 and the inner circumferential surface of the pulley 302. The above design is advantageous because by setting the two ends of the transmission belt 301 to be sleeved on the circumferential surface of the threaded rod 202 and the inner circumferential surface of the pulley 302, the rotation of the threaded rod 202 drives the pulley 302 to rotate synchronously.

[0041] The working process of this utility model is as follows: First, when the threaded rod 202 rotates, it drives the transmission belt 301 sleeved on its circumferential surface to drive the pulley 302 to rotate synchronously, thereby causing the circular plate 303 fixedly connected inside the pulley 302 to rotate accordingly, which in turn drives the half gear 304 fixedly connected to it to make circumferential motion. When the toothed part of the half gear 304 meshes with the rack 305, it pushes the rack 305 to make linear motion along the slide groove opened on the surface of the long plate 307. Thus, one end of the rack 305 away from the half gear 304 is elastically connected to the inner wall of the slide groove through the spring telescopic rod A306, while the other end is elastically connected to the inner wall of the slide groove through the spring. The telescopic rod B308 is connected to the scraper 309. When the half gear 304 continues to rotate to the toothless section, the rack 305 moves in the opposite direction under the restoring force of the spring telescopic rod A306. At the same time, the spring telescopic rod B308 maintains elastic pressure on the scraper 309. Through the intermittent rotation of the half gear 304, the motion is converted into the reciprocating linear motion of the rack 305, which drives the scraper 309 to separate the forged part from the forging table 102. This achieves rapid and stable separation of the part from the mold 104, significantly improving demolding efficiency and consistency, ensuring product quality and production safety, and extending the service life of the mold 104.

[0042] The above describes the working principle of this type of integral rear axle housing molding die.

Claims

1. An integral rear axle housing forming mold, comprising a forging mold device (1), characterized in that: The forging die device (1) includes a base (101), a forging press (102) is fixedly connected to the top of the base (101), and connecting columns (103) are fixedly connected to both sides of the base (101). A top cover (106) passes through the end of the connecting column (103) away from the base (101) and is slidably connected to the connecting column (103). A die (104) is provided at the end of the forging press (102) away from the base (101), and an extrusion table (105) is fixedly connected to the side of the top cover (106) close to the die (104). It also includes a demolding device (2) for secondary demolding of the mold parts; Release device (3) is used to release the mold part from the mold (104); The demolding device (2) includes a threaded rod (202), on which a transmission belt (301) is fitted and fixedly connected.

2. A one-piece rear axle housing forming die according to claim 1, wherein: The demolding device (2) includes a three-phase asynchronous motor (201). A threaded rod (202) is fixedly connected to the fixed output shaft of the three-phase asynchronous motor (201). A connecting plate (204) is rotatably connected to the circumferential surface of the threaded rod (202) away from the three-phase asynchronous motor (201). A base plate (203) is provided on the side of the connecting plate (204) near the threaded rod (202). A cylindrical plate (205) is fixedly connected to the side of the base plate (203) near the connecting plate (204). The connecting plate (204) is fixedly connected to a push-out column (206) on the side away from the bottom plate (203). A rotating plate (207) is fixedly connected to one end of the connecting plate (204). A hook plate (208) is hinged on the circumferential surface of the rotating plate (207). A fixing column (209) is provided at the tail of the hook plate (208). A spring (210) is fixedly connected to the top of the hook plate (208). A top plate (211) is fixedly connected to the end of the push-out column (206) away from the connecting plate (204).

3. A one-piece rear axle housing forming die according to claim 2 wherein: The threaded rod (202) passes through the interior of the base plate (203) on its circumferential surface and is rotatably connected to the connecting plate (204). The rotating plate (207) has a threaded hole inside. The cylindrical plate (205) passes through the connecting plate (204) on its circumferential surface and is slidably connected to the connecting plate (204).

4. The one-piece rear axle housing forming die of claim 1 wherein: The detachment device (3) further includes a pulley (302), a circular plate (303) passing through the pulley (302) and fixedly connected to it, a half gear (304) passing through the circumference of the circular plate (303) and fixedly connected to it, a rack (305) rotatably connected to the circumference of the half gear (304), a spring telescopic rod A (306) fixedly connected to the end of the rack (305) away from the half gear (304), a long plate (307) provided on the outside of the rack (305), a spring telescopic rod B (308) fixedly connected to the side of the rack (305) away from the half gear (304), and a scraper (309) fixedly connected to the end of the spring telescopic rod B (308) away from the rack (305).

5. The integral rear axle housing molding die according to claim 4, characterized in that: The surface of the long plate (307) is provided with a sliding groove, and the end of the spring telescopic rod A (306) away from the rack (305) is fixedly connected to the inner wall of the sliding groove provided in the long plate (307).

6. The integral rear axle housing molding die according to claim 4, characterized in that: The two ends of the transmission belt (301) are respectively sleeved on the circumferential surface of the threaded rod (202) and the inner circumferential surface of the pulley (302).

7. The integral rear axle housing molding die according to claim 2, characterized in that: The ejector column (206) is provided with a connecting plate (204) and a top plate (211) at both ends, and is slidably connected to the top plate (211). The bottom of the top plate (211) is provided on the top surface of the forging table (102). The end of the ejector column (206) away from the connecting plate (204) passes through the forging table (102) and is slidably connected to the ejector column (206). A wedge plate is provided above the hook plate (208). The wedge plate is fixedly connected to the top surface inside the forging table (102). One end of the fixing column (209) is fixedly connected to one side of the bottom plate (203).

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