Sleeve die-casting die

Abstract

The utility model relates to the technical field of dies, in particular to a sleeve die-casting die. The sleeve die-casting die comprises an upper die and a lower die, and the upper die comprises an upper die plate and an upper die core; the lower die comprises a lower die plate, a lower die core, a first core block, a second core block, a third core block and a fourth core block; the first core block is arranged on the first slide mechanism; the second core block is arranged on the second slide mechanism; the third core block is arranged on the third slide mechanism; the fourth core block is arranged on the fourth slide mechanism; a first limiting groove, a second limiting groove and a third limiting groove are formed in the upper mold core; when the upper die and the lower die are closed, the first limiting groove is pressed on a first sliding block of the first slide mechanism; the second limiting groove is pressed on a second slide block of the second slide mechanism; the third limiting groove is pressed on a third slide block of the third slide mechanism; and a limiting block arranged on the third slide mechanism is inserted into a limiting opening formed in the fourth core block, so that the internal sealing performance is good after the mold is closed, and the problem of air leakage does not exist.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a die-casting mold. Background Technology

[0002] A die-casting mold is a type of mold used to manufacture metal parts, primarily for completing the die-casting process on a die-casting machine. Die-casting is the process of injecting liquid or semi-liquid metal into a mold cavity under high pressure and rapidly solidifying it under pressure to obtain a casting. In production, a portion of the metal sleeve can be made first, then the metal sleeve is placed into the mold, and finally, the die-casting process is used to enclose the metal sleeve.

[0003] Some components on the market are manufactured using die-casting, such as some gas valves, automotive fuel valves, and exhaust valves. These products may require multiple mold cores during die casting, with some mold cores located on slides. However, the sealing requirements of the mold are very high. At the same time, due to the presence of multiple slides, air tightness is difficult to control, and air leakage may occur when the mold is closed.

[0004] For example, Chinese patent application number CN201010618913.1 discloses a die-casting mold for manufacturing an automatic pump valve body for a gasoline engine, specifically outlining a "slider demolding device, which includes a hydraulic cylinder, a slider, and a connecting block connected to the slider arranged in sequence. The hydraulic cylinder is fixed to a moving template and driven by the slider. The connecting block is formed with a core corresponding to the long hole of the valve body. A lateral core-pulling mechanism is installed between the slider and the fixed template." This design actually involves multiple actions to achieve core-pulling and demolding steps, making it difficult to control the sealing during mold closing and potentially leading to air leakage.

[0005] For example, the die-casting mold with a large-angle core-pulling mechanism described in Chinese patent application number CN202020818847.1 has multiple sliding mechanisms, making it difficult to control the sealing during mold closing and potentially leading to air leakage. In particular, the large-angle core-pulling mechanism lacks additional limiting devices, which may cause mold leakage during die casting. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a die-casting mold in which each sliding mechanism is limited when the mold is closed, and the sealing performance is good and there is no air leakage, thereby overcoming the shortcomings of the existing technology.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This application provides a die-casting mold, including an upper mold and a lower mold, wherein the upper mold includes an upper template and an upper mold core disposed on the upper template;

[0009] The lower mold includes a lower template, a lower mold core, a first core block, a second core block, a third core block, and a fourth core block; the lower mold core is set in the lower template.

[0010] The first core block is disposed in the first row positioning mechanism; the second core block is disposed in the second row positioning mechanism; the third core block is disposed in the third row positioning mechanism; and the fourth core block is disposed in the fourth row positioning mechanism.

[0011] The first core block, the second core block, and the third core block can be closed together; the fourth core block can be closed obliquely upward on the lower mold core.

[0012] The upper mold core is provided with a first limiting groove, a second limiting groove, and a third limiting groove;

[0013] When the upper and lower molds are closed, the first limiting groove presses on the first slider of the first sliding mechanism; the second limiting groove presses on the second slider of the second sliding mechanism; the third limiting groove presses on the third slider of the third sliding mechanism; and the limiting block provided on the third sliding mechanism is inserted into the limiting port provided on the fourth core block.

[0014] Preferably, the first core block is provided with a first insert pin; the third core block is provided with a second insert pin; the first core block and the third core block are closed, and the first insert pin and the second insert pin are inserted into the first metal sleeve; the second core block is closed on the first core block and the third core block; the lower mold core is provided with an insert post, and the second metal sleeve is on the insert post.

[0015] Preferably, the first sliding mechanism includes a first hydraulic cylinder, a first slide rail, a first limiting plate, and a first slider; the output end of the first hydraulic cylinder is connected to the first slider; the first limiting plate is disposed on both sides of the first slider and restricts the first slider to slide on the first slide rail; the first core block is disposed on the first slider.

[0016] The second sliding mechanism includes a second hydraulic cylinder, a second slide rail, a second limiting plate, and a second slider; the output end of the second hydraulic cylinder is connected to the second slider; the second limiting plate is disposed on both sides of the second slider and restricts the second slider to slide on the second slide rail; the second core block is disposed on the second slider.

[0017] The third sliding mechanism includes a third hydraulic cylinder, a third slide rail, a third limiting plate, and a third slider; the output end of the third hydraulic cylinder is connected to the third slider; the third limiting plate is disposed on both sides of the third slider and restricts the third slider to slide on the third slide rail; the third core block is disposed on the third slider.

[0018] Preferably, the fourth sliding mechanism includes a fourth hydraulic cylinder, a fourth slide rail, a fourth limiting plate, and a fourth slider; the output end of the fourth hydraulic cylinder is connected to the fourth slider; the fourth limiting plate is disposed on both sides of the fourth slider and restricts the fourth slider to slide on the fourth slide rail.

[0019] The fourth slider is provided with an inclined first guide groove; the connecting seat slides on the first guide groove, and the fourth core block is provided on the connecting seat; the fourth core block and the connecting seat are inclined, and the side of the fourth core block is provided with a fifth sliding groove; the fifth sliding groove slides on the fifth slide rail.

[0020] Preferably, a first pad is provided on the first slider; a second pad is provided on the second slider; and a third pad is provided on the third slider; wherein the first pad, the second pad, and the third pad are inclined inward.

[0021] Preferably, the upper mold plate is provided with an injection nozzle; the lower mold core is provided with a flow channel; after the lower mold core, the first core block, the second core block, the third core block, and the fourth core block are closed, a cavity is formed inside, and the die casting material enters the cavity from the injection nozzle and the flow channel.

[0022] Preferably, the upper mold core is provided with a first slag-filling groove, a second slag-filling groove, and a third slag-filling groove; the first slag-filling groove corresponds to the top of the first core block; the second slag-filling groove corresponds to the top of the second core block; the third slag-filling groove corresponds to the top of the third core block; the die-casting material enters the cavity from the bottom of the cavity, and some die-casting material overflows from the top of the cavity.

[0023] Preferably, the first core block is provided with a third insert pin; the third core block is provided with a fourth insert pin; the fourth core block is provided with a fifth insert pin; the third insert pin, the fourth insert pin, and the fifth insert pin extend into the cavity.

[0024] Preferably, the lower mold further includes a lower mold base, and the lower mold plate is disposed in the lower mold base; the lower mold base is provided with a top plate, an ejector plate, and an elastic post; the ejector pin is disposed in the ejector plate; the ejector plate is disposed in the top plate; the ejector pin extends into the cavity and the venting groove; the elastic post can push against the lower mold plate.

[0025] Preferably, the upper mold plate is provided with guide pillars, the lower mold plate is provided with guide pillar cylinders, and the guide pillars are inserted into the guide pillar cylinders; the upper mold and the lower mold are provided with cooling channels, and the cooling channels are circulated with cooling medium.

[0026] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, when the upper mold and lower mold are closed, the upper mold core, lower mold core, first core block, second core block, third core block, and fourth core block are closed together. At the same time, the first limiting groove presses on the first slider of the first sliding mechanism to ensure that the first core block does not move; the second limiting groove presses on the second slider of the second sliding mechanism to ensure that the second core block does not move; the third limiting groove presses on the third slider of the third sliding mechanism to ensure that the third core block does not move; the limiting block provided on the third sliding mechanism is inserted into the limiting port provided on the fourth core block to ensure that the fourth core block does not move. Therefore, after the mold is closed, the internal sealing of the cavity is good and there is no problem of air leakage. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a product according to an embodiment of the present utility model.

[0028] Figure 2 This is an embodiment of the present utility model. Figure 1 Another structural diagram.

[0029] Figure 3 This is a schematic diagram of the mold opening state according to an embodiment of the present invention.

[0030] Figure 4 This is a schematic diagram of the alignment mechanism according to an embodiment of the present invention.

[0031] Figure 5 This is a partial exploded view of an embodiment of the present invention.

[0032] Figure 6 This is a bottom view of a partial structural embodiment of the present utility model.

[0033] Figure 7 This is a partial exploded view of an embodiment of the present invention.

[0034] Figure 8 This is a partial structural schematic diagram of an embodiment of the present utility model.

[0035] Figure 9 This is a partial structural schematic diagram of an embodiment of the present utility model.

[0036] Figure 10 This is a bottom view of a partial structural embodiment of the present utility model.

[0037] Figure 11 This is a schematic diagram of the product position according to an embodiment of the present utility model.

[0038] Explanation of reference numerals in the attached diagram:

[0039] 10. Upper mold; 11. Upper template; 12. Injection nozzle; 110. Upper mold core; 111. First limiting groove; 112. Second limiting groove; 113. Third limiting groove; 114. First slag pocket groove; 115. Second slag pocket groove; 116. Third slag pocket groove; 117. Guide pillar; 118. Cooling channel; 20. Lower mold; 21. Lower template; 22. Lower mold core; 23. Insert pillar; 24. Runner; 25. Top plate; 26. Ejector plate; 27. Elastic pillar; 28. Guide pillar cylinder; 29. ​​Lower mold base; 210. First sliding mechanism; 211. First hydraulic cylinder; 212. First slide rail; 213. First limiting plate; 214. First pad block; 215. First slider; 216. First core block; 217. First insert pin; 218. Third insert pin 219. Ejector pin; 220. Second sliding mechanism; 221. Second hydraulic cylinder; 222. Second slide rail; 223. Second limiting plate; 224. Second pad block; 225. Second slider; 226. Second core block; 230. Third sliding mechanism; 231. Third hydraulic cylinder; 232. Third slide rail; 233. Third limiting plate; 234. Third pad block; 235. Third slider; 236. Third core block; 237. Second insert pin; 238. Fourth insert pin; 239. Limiting block; 240. Fourth sliding mechanism; 241. Fourth hydraulic cylinder; 242. Fourth slide rail; 243. Fourth limiting plate; 244. Fourth slider; 245. First guide groove; 246. Connecting seat; 247. Fourth core block; 248. Fifth groove; 249. Fifth insert pin; 2410. Limiting port; 2411. Fifth slide rail; 50. Product; 51. First metal sleeve; 52. Second metal sleeve. Detailed Implementation

[0040] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0041] Please refer to Figures 1 to 11 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, which is a die-casting mold.

[0042] When the mold is closed, the core blocks on each slide are well limited and will not be displaced. The mold has good sealing performance and there is no air leakage problem.

[0043] This application provides a die-casting mold, including an upper mold 10 and a lower mold 20. The upper mold 10 includes an upper template 11 and an upper mold core 110 disposed on the upper template 11. The lower mold 20 includes a lower template 21, a lower mold core 22, a first core block 216, a second core block 226, a third core block 236, and a fourth core block 247; the lower mold core 22 is disposed on the lower template 21. The upper mold 10 and the lower mold 20 are disposed on a machine base and can be closed together. After the upper mold core 110, the lower mold core 22, the first core block 216, the second core block 226, the third core block 236, and the fourth core block 247 are closed together, a cavity is formed inside. During die casting, a pre-made metal sleeve is fixed in the cavity, and then die casting material is injected into the cavity. The die casting material wraps around the metal sleeve, ultimately forming a product 50. The metal sleeve can be a forging, a powder metallurgy part, a stamped part, etc. The first metal sleeve and the second metal sleeve can be components made of powder metallurgy.

[0044] The first core block 216 is disposed in the first sliding mechanism 210; the second core block 226 is disposed in the second sliding mechanism 220; the third core block 236 is disposed in the third sliding mechanism 230; and the fourth core block 247 is disposed in the fourth sliding mechanism 240. The first core block 216, the second core block 226, and the third core block 236 can be closed together; the fourth core block 247 can be closed obliquely upward on the lower mold core 22; the upper mold core 110 is provided with a first limiting groove 111, a second limiting groove 112, and a third limiting groove 113. The first sliding mechanism 210 drives the first core block 216 to move, the second sliding mechanism 220 drives the second core block 226 to move, the third sliding mechanism 230 drives the third core block 236 to move, and the fourth sliding mechanism 240 drives the fourth core block 247 to move.

[0045] During operation, the first core block 216, the second core block 226, the third core block 236, and the fourth core block 247 are closed in the lower mold core 22, followed by the upper mold core 110 and the lower mold core 22 being closed together. When the upper mold core 110 and the lower mold core 22 are closed, the first limiting groove 111 presses against the first slider 215 of the first sliding mechanism 210 to ensure that the first core block 216 does not shift; the second limiting groove 112 presses against the second slider 225 of the second sliding mechanism 220 to ensure that the second core block 226 does not shift; the third limiting groove 113 presses against the third slider 235 of the third sliding mechanism 230 to ensure that the third core block 236 does not shift; the limiting block 239 is set on the third slider 235 and can move with the third slider 235. The limiting block 239 is inserted into the limiting port 2410 set on the fourth core block 247 to ensure that the fourth core block 247 does not shift in the mold-closed state. Therefore, after the upper mold core 110 and the lower mold core 22 are closed, the first core block 216, the second core block 226, the third core block 236, and the fourth core block 247 will not be displaced, the mold has good sealing performance, and there will be no air leakage.

[0046] Preferably, the first core block 216 is provided with a first insert pin 217; the third core block 236 is provided with a second insert pin 237; the first core block 216 and the third core block 236 are closed, and the first insert pin 217 and the second insert pin 237 are inserted into the first metal sleeve 51; the second core block 226 is closed on the first core block 216 and the third core block 236; the lower mold core 22 is provided with an insert post 23, and the second metal sleeve 52 is on the insert post 23. The first core block 216 and the third core block 236 can be closed together; before die casting, the first insert pin 217 and the second insert pin 237 are inserted into the first metal sleeve 51 to position and fix the first metal sleeve 51. The second metal sleeve 52 is on the insert post 23 to position the second metal sleeve 52. After the upper mold core 110, the first core block 216, the second core block 226, the third core block 236, and the lower mold core 22 are all closed together, die-casting material is injected into the cavity. The die-casting material combines with the first metal sleeve 51 and the second metal sleeve 52 to form a whole, achieving positioning. In this embodiment, the fixing structure of the first metal sleeve 51 and the second metal sleeve 52 is very simple and has good firmness, preventing loosening. The first metal sleeve 51 and the second metal sleeve 52 can also be other metal parts, such as metal rings, metal plates, etc., without specific limitations.

[0047] Preferably, the first sliding mechanism 210 includes a first hydraulic cylinder 211, a first slide rail 212, a first limiting plate 213, and a first slider 215; the output end of the first hydraulic cylinder 211 is connected to the first slider 215; the first limiting plate 213 is disposed on both sides of the first slider 215 and restricts the first slider 215 to slide on the first slide rail 212; the first core block 216 is disposed on the first slider 215. The first hydraulic cylinder 211 drives the first slider 215 to slide on the first slide rail 212. The first limiting plate 213 and the first slider 215 are provided with stepped limiting structures, so the first limiting plate 213 can restrict the first slider 215 to slide on the first slide rail 212. The first core block 216 can be mounted on the first slider 215 by screws.

[0048] The second sliding mechanism 220 includes a second hydraulic cylinder 221, a second slide rail 222, a second limiting plate 223, and a second slider 225. The output end of the second hydraulic cylinder 221 is connected to the second slider 225. The second limiting plate 223 is disposed on both sides of the second slider 225 and restricts the second slider 225 to slide on the second slide rail 222. The second core block 226 is disposed on the second slider 225. The second hydraulic cylinder 221 drives the second slider 225 to slide on the second slide rail 222. The second limiting plate 223 and the second slider 225 are provided with stepped limiting structures, so the second limiting plate 223 can restrict the second slider 225 to slide on the second slide rail 222. The second core block 226 can be mounted on the second slider 225 by screws.

[0049] The third sliding mechanism 230 includes a third hydraulic cylinder 231, a third slide rail 232, a third limiting plate 233, and a third slider 235. The output end of the third hydraulic cylinder 231 is connected to the third slider 235. The third limiting plate 233 is disposed on both sides of the third slider 235 and restricts the third slider 235 to slide on the third slide rail 232. The third core block 236 is disposed on the third slider 235. The third hydraulic cylinder 231 drives the third slider 235 to slide on the third slide rail 232. The third limiting plate 233 and the third slider 235 are provided with stepped limiting structures, so the third limiting plate 233 can restrict the third slider 235 to slide on the third slide rail 232. The third core block 236 can be mounted on the third slider 235 by screws.

[0050] Preferably, the fourth sliding mechanism 240 includes a fourth hydraulic cylinder 241, a fourth slide rail 242, a fourth limiting plate 423, and a fourth slider 244; the output end of the fourth hydraulic cylinder 241 is connected to the fourth slider 244; the fourth limiting plate 423 is disposed on both sides of the fourth slider 244 and restricts the fourth slider 244 to slide on the fourth slide rail 242; the fourth slider 244 is provided with an inclined first guide groove 245; the connecting seat 246 slides on the first guide groove 245, and the fourth core block 247 is disposed on the connecting seat 246; the fourth core block 247 and the connecting seat 246 are inclined, and the side of the fourth core block 247 is provided with a fifth sliding groove 248; the fifth sliding groove 248 slides on the fifth slide rail. The fourth hydraulic cylinder 241 drives the fourth slider 244 to slide on the fourth slide rail 242. The fourth limiting plate 423 and the fourth slider 244 are provided with stepped limiting structures, thus the fourth limiting plate 423 can restrict the fourth slider 244 to slide on the fourth slide rail 242. The connecting seat 246 can slide on the first guide groove 245 on the fourth slider 244, and the fourth core block 247 is disposed on the connecting seat 246, thus the fourth core block 247 can move obliquely up and down. Simultaneously, the side of the fourth core block 247 is provided with a fifth sliding groove 248; the fifth sliding groove 248 slides on the fifth slide rail 2411, thus allowing precise control of the movement trajectory of the fourth core block 247. The stepped limiting structure is simple in structure and also plays a good limiting role, preventing deviation, tilting, etc.

[0051] Preferably, a first pad 214 is provided on the first slider 215; a second pad 224 is provided on the second slider 225; and a third pad 234 is provided on the third slider 235; wherein the first pad 214, the second pad 224, and the third pad 234 are inclined inward. The first pad 214, the second pad 224, and the third pad can be fixed with screws. The first pad 214, the second pad 224, and the third pad can be replaceable metal plates for easy maintenance. Because the pads are inclined inward, when the corresponding limiting groove presses on the pad, the corresponding slider will move inward, which helps to ensure the sealing of the mold closing. When the mold is closed, the first limiting groove 111 presses on the first pad 214, the second limiting groove 112 presses on the second pad 224, and the third limiting groove 113 presses on the third pad 234. This design ensures that the first slider 215, the second slider 225, and the third slider 235 will not loosen in the mold-closed state, thus ensuring the mold-closed sealing.

[0052] Preferably, the upper mold plate 11 is provided with a sprue nozzle 12; the lower mold core 22 is provided with a flow channel 24; after the lower mold core 22, the first core block 216, the second core block 226, the third core block 236, and the fourth core block 247 are closed, a cavity is formed inside, and the die casting material enters the cavity from the sprue nozzle 12 and the flow channel 24. The die casting machine injects the molten die casting material from the sprue nozzle 12 into the flow channel 24. The lower mold core 22 is provided with multiple flow channels 24, which allows the die casting material to be injected into the cavity quickly. In this embodiment, the flow channel 24 is located on one side of the cavity, and the venting groove connected to the cavity is located on the other side of the cavity. This allows the die casting material to flow from one side to the other side. This design allows the die casting material to better fill the cavity and prevents the formation of air holes.

[0053] Preferably, the upper mold core 110 is provided with a first slag pocket groove 114, a second slag pocket groove 115, and a third slag pocket groove 116; the first slag pocket groove 114 corresponds to the top of the first core block 216; the second slag pocket groove 115 corresponds to the top of the second core block 226; and the third slag pocket groove 116 corresponds to the top of the third core block 236. The die-casting material enters the cavity from the bottom, and some of it overflows from the top. The die-casting material enters the cavity and combines with the metal components within the cavity, such as metal sleeves, to form a single unit. The die-casting material enters from the bottom of the cavity, and then some overflows from the top, forming a slag pocket. This flow pattern allows the die-casting material to quickly and completely fill the cavity, while also preventing porosity and air bubbles.

[0054] Preferably, the first core block 216 is provided with a third insert pin 218; the third core block 236 is provided with a fourth insert pin 238; and the fourth core block 247 is provided with a fifth insert pin 249. The third insert pin 218, the fourth insert pin 238, and the fifth insert pin 249 extend into the mold cavity. The third insert pin 218, the fourth insert pin 238, and the fifth insert pin 249 can form corresponding holes on the product 50. This design is very convenient and efficient. During demolding, the fourth core block 247 is pulled out of the mold cavity at an angle downwards. The movement speed of the fourth core block 247 will be slightly slower. This design can protect the product 50 and prevent the product 50 from being damaged during demolding.

[0055] Preferably, the lower mold 20 further includes a lower mold base 29, and the lower mold plate 21 is disposed in the lower mold base 29; the lower mold base 29 is provided with a top plate 25, an ejector plate 26, and an elastic pillar 27; ejector pins 219 are disposed on the ejector plate 26; the ejector plate 26 is disposed on the top plate 25; the ejector pins 219 extend into the cavity and the venting groove; the elastic pillars 27 can push against the lower mold plate 21. The elastic pillars 27 are preferably rubber pillars, which are elastic and can play a buffering role, helping to protect the mold and prevent mold damage. The top plate 25 drives the ejector plate 26 to move up and down, and the ejector pins 219 can eject the product 50, as well as slag, waste, etc. from the cavity. This device facilitates demolding of the product 50 and prevents damage to the product 50.

[0056] Preferably, the upper mold plate 11 is provided with guide pillars 117, and the lower mold plate 21 is provided with guide pillar cylinders 28, with the guide pillars 117 inserted into the guide pillar cylinders 28; cooling channels 118 are provided on the upper mold 10 and the lower mold 20, and cooling media are introduced into the cooling channels 118. During mold closing, the guide pillars 117 are inserted into the guide pillar cylinders 28, ensuring mold closing accuracy. The cooling channels 118 can be made of copper pipes, stainless steel pipes, etc. The cooling media entering the cooling channels 118 can cool the mold, allowing the product to be formed quickly and improving production efficiency.

[0057] In summary, the key design feature of this utility model is that when the upper mold 10 and the lower mold 20 are closed, the first limiting groove 111 presses on the first slider 215 of the first sliding mechanism 210; the second limiting groove 112 presses on the second slider 225 of the second sliding mechanism 220; the third limiting groove 113 presses on the third slider 235 of the third sliding mechanism 230; and the limiting block 239 provided on the third sliding mechanism 230 is inserted into the limiting port 2410 provided on the fourth core block 247, ensuring that the fourth core block 247 does not shift. Therefore, after the mold is closed, the core blocks on each sliding position will not loosen, the internal sealing of the mold is good, and there is no problem of air leakage.

[0058] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A die-casting mold, comprising an upper mold and a lower mold, characterized in that: The upper mold includes an upper template and an upper mold core disposed on the upper template; The lower mold includes a lower template, a lower mold core, a first core block, a second core block, a third core block, and a fourth core block; the lower mold core is set in the lower template. The first core block is disposed in the first row positioning mechanism; the second core block is disposed in the second row positioning mechanism; the third core block is disposed in the third row positioning mechanism; and the fourth core block is disposed in the fourth row positioning mechanism. The first core block, the second core block, and the third core block can be closed together; the fourth core block can be closed obliquely upward on the lower mold core. The upper mold core is provided with a first limiting groove, a second limiting groove, and a third limiting groove; When the upper and lower molds are closed, the first limiting groove presses on the first slider of the first sliding mechanism; the second limiting groove presses on the second slider of the second sliding mechanism; the third limiting groove presses on the third slider of the third sliding mechanism; and the limiting block provided on the third sliding mechanism is inserted into the limiting port provided on the fourth core block.

2. The die-casting mold according to claim 1, characterized in that: The first core block is provided with a first insert pin; the third core block is provided with a second insert pin; the first core block and the third core block are closed, and the first insert pin and the second insert pin are inserted into the first metal sleeve; the second core block is closed on the first core block and the third core block; the lower mold core is provided with an insert post, and the second metal sleeve is on the insert post.

3. The die-casting mold according to claim 1, characterized in that: The first sliding mechanism includes a first hydraulic cylinder, a first slide rail, a first limiting plate, and a first slider; the output end of the first hydraulic cylinder is connected to the first slider; the first limiting plate is disposed on both sides of the first slider and restricts the first slider to slide on the first slide rail; the first core block is disposed on the first slider. The second sliding mechanism includes a second hydraulic cylinder, a second slide rail, a second limiting plate, and a second slider; the output end of the second hydraulic cylinder is connected to the second slider; the second limiting plate is disposed on both sides of the second slider and restricts the second slider to slide on the second slide rail; the second core block is disposed on the second slider. The third sliding mechanism includes a third hydraulic cylinder, a third slide rail, a third limiting plate, and a third slider; the output end of the third hydraulic cylinder is connected to the third slider; the third limiting plate is disposed on both sides of the third slider and restricts the third slider to slide on the third slide rail; the third core block is disposed on the third slider.

4. A die-casting mold according to claim 1 or 3, characterized in that: The fourth sliding mechanism includes a fourth hydraulic cylinder, a fourth slide rail, a fourth limiting plate, and a fourth slider; the output end of the fourth hydraulic cylinder is connected to the fourth slider; the fourth limiting plate is disposed on both sides of the fourth slider and restricts the fourth slider to slide on the fourth slide rail. The fourth slider is provided with an inclined first guide groove; the connecting seat slides on the first guide groove, and the fourth core block is provided on the connecting seat; the fourth core block and the connecting seat are inclined, and the side of the fourth core block is provided with a fifth sliding groove; the fifth sliding groove slides on the fifth slide rail.

5. The die-casting mold according to claim 4, characterized in that: A first pad is provided on the first slider; a second pad is provided on the second slider; and a third pad is provided on the third slider; wherein the first pad, the second pad, and the third pad are inclined inward.

6. The die-casting mold according to claim 1, characterized in that: The upper mold plate is provided with a sprue nozzle; the lower mold core is provided with a flow channel; after the lower mold core, the first core block, the second core block, the third core block, and the fourth core block are closed, a cavity is formed inside, and the die casting material enters the cavity from the sprue nozzle and the flow channel.

7. The die-casting mold according to claim 1, characterized in that: The upper mold core is provided with a first slag-filling groove, a second slag-filling groove, and a third slag-filling groove; the first slag-filling groove corresponds to the top of the first core block; the second slag-filling groove corresponds to the top of the second core block; The third slag trough corresponds to the top of the third core block; the die casting material enters the cavity from the bottom of the cavity, and some of the die casting material overflows from the top of the cavity.

8. A die-casting mold according to claim 7, characterized in that: The first core block is provided with a third insert pin; the third core block is provided with a fourth insert pin; the fourth core block is provided with a fifth insert pin; the third insert pin, the fourth insert pin, and the fifth insert pin extend into the cavity.

9. A die-casting mold according to claim 1, characterized in that: The lower mold also includes a lower mold base, and the lower mold plate is disposed in the lower mold base; the lower mold base is provided with a top plate, an ejector plate, and an elastic post; the ejector pin is disposed in the ejector plate; the ejector plate is disposed in the top plate; the ejector pin extends into the cavity and the venting groove; the elastic post can push against the lower mold plate.

10. A die-casting mold according to claim 1, characterized in that: The upper mold plate is provided with guide pillars, and the lower mold plate is provided with guide pillar cylinders, with the guide pillars inserted into the guide pillar cylinders; the upper mold and the lower mold are provided with cooling channels, through which cooling medium flows.

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