CN218906146U

CN218906146U - Automobile differential oil pipe and water-assisted injection mold for manufacturing same

Info

Publication number: CN218906146U
Application number: CN202222994864.2U
Authority: CN
Inventors: 胡辉; 陈杰; 任灿根; 陈坚; 吴家雄; 张赞华; 徐淑兰; 章江祥
Original assignee: Zhejiang Century Huatong Automotive Part Co ltd
Current assignee: Zhejiang Century Huatong Automotive Part Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-04-25
Anticipated expiration: 2032-11-10

Abstract

The utility model relates to an oil pipe of an automobile differential mechanism and a water-assisted injection mold for manufacturing the oil pipe. The prior oil pipe product has complicated production procedures, easy leakage at the weld joint of the product, poor dimensional accuracy of the installation position and low mass production efficiency. The utility model comprises an upper die core and a lower die core, and is characterized in that a product cavity is formed between the upper die core and the lower die core, a hot runner is formed below one end of the upper die core, the hot runner is connected into one end of the product cavity through a first runner pipe, a water auxiliary spray head is formed below the other end of the upper die core, and the water auxiliary spray head is connected into the other end of the product cavity through a second runner pipe. The utility model completes the molding of the oil pipe product by water auxiliary injection molding and obtains good product surface quality. After the product is changed into an integral injection molding, the procedures of bending, welding and the like are omitted, and the consistency of the product size and the stability of the product quality are effectively ensured.

Description

Automobile differential oil pipe and water-assisted injection mold for manufacturing same

Technical Field

The utility model relates to the technical field of injection molds of automobile parts, in particular to an automobile differential oil pipe and a water-assisted injection mold for manufacturing the oil pipe.

Background

The oil pipe is used for the differential mechanism of the new energy vehicle, lubricating oil is required to be introduced into the oil pipe and then sprayed onto the speed change gear from small holes in the product, so that the gear lubrication effect is achieved. The leakage of the pipe body can cause the reduction of the internal pressure of the oil pipe so that the injection distance of lubricating oil can not reach the optimal lubrication position, and the serious failure problems of abnormal abrasion, death by burning, gear tooth striking, tooth root fracture, planetary shaft fracture and the like are caused, so that the high differential failure rate can bring about huge economic loss.

As shown in FIGS. 1-2, the prior oil pipe product material is SS304 stainless steel pipe with the density of 7.93g/cm ³ The grammage was about 280g, and the wall thickness at the inner wall A was 1mm. When the product is formed, the cut pipes are respectively bent through a pipe bending machine, then the pipe body, the mounting support and the pipe head after turning are welded through a laser welding technology, the process is complex and complicated, leakage is easy to occur at the welding seam, the dimensional accuracy of the mounting position is poor, the batch production efficiency is low, and the unit price of the product is expensive.

Disclosure of Invention

Aiming at the problems, the utility model provides the oil pipe of the automobile differential mechanism and the water-assisted injection mold for manufacturing the oil pipe, which can lighten the weight of the oil pipe, improve the quality of products, improve the production efficiency and effectively ensure the consistency of the sizes of the products and the stability of the quality of the products.

The utility model adopts the following technical scheme: the oil pipe water-assisted injection mold for the automobile differential mechanism comprises an upper mold core and a lower mold core and is characterized in that a product cavity is formed between the upper mold core and the lower mold core, a hot runner is formed below one end of the upper mold core and is connected with one end of the product cavity through a first runner pipe, a water-assisted spray head is formed below the other end of the upper mold core, and the water-assisted spray head is connected with the other end of the product cavity through a second runner pipe.

Preferably, the number of the hot runners is two, the hot runners are vertically arranged, and the number of the first runner pipes is also two and symmetrically distributed left and right.

Preferably, the first runner pipe is provided with a section of U-shaped bent pipe at the middle position.

Preferably, the second flow channel pipe is of a J-shaped pipe structure.

Furthermore, the utility model also discloses an oil pipe of the automobile differential manufactured by using the water-assisted injection mold.

Preferably, the tubing is curved Y-shaped.

Preferably, the tubing has an outer diameter of 16+0/-2mm and an inner diameter of 10+0/-2mm.

The utility model improves the common injection mould, increases the water auxiliary spray head structure, completes the molding of the oil pipe product through water auxiliary injection molding, and obtains good product surface quality. After the product is changed into an integral injection molding, the procedures of bending, welding and the like are omitted, and the consistency of the product size and the stability of the product quality are effectively ensured. And the material cost is lower, the unit price of the product is ensured to be cheaper, and the cost is reduced.

Drawings

Fig. 1 is a schematic perspective view of a conventional oil pipe product.

Fig. 2 is a schematic view of the internal partial structure of fig. 1.

Fig. 3 is a schematic structural view of an injection mold according to the present utility model.

FIG. 4 is a schematic structural diagram of the product of the present utility model.

Detailed Description

The utility model will be further illustrated with reference to specific examples.

The oil pipe of the automobile differential mechanism shown in fig. 3 comprises an upper die core 1 and a lower die core 4, a product cavity is formed between the upper die core 1 and the lower die core 4, a hot runner 2 is formed below one end of the upper die core, the hot runner 2 is connected with one end of the product cavity through a first runner pipe 3, a water auxiliary spray head 7 is formed below the other end of the upper die core 1, and the water auxiliary spray head 7 is connected with the other end of the product cavity through a second runner pipe 6. The mould is mainly added with a water auxiliary spray head structure, and the oil pipe product is molded through water auxiliary injection molding, so that good product surface quality is obtained.

In one embodiment, the number of the hot runner 2 is two, and the hot runner pipes 3 are also vertically arranged, and are symmetrically distributed left and right. Two branch pipes are arranged at one end of the product, and injection molding is performed by arranging two vertical hot runners, so that the production efficiency and quality are improved.

For better injection molding products, the structure of the first runner pipe 3 and the second runner pipe is improved by attaching the molding structure of the products, wherein a section of U-shaped bent pipe 8 is arranged in the middle of the first runner pipe 3. The second flow channel tube 6 is a J-shaped tube structure.

As shown in FIG. 4, the oil pipe 6 of the automobile differential manufactured by the water-assisted injection mold is in a bent Y shape, the bent part of the oil pipe is mainly shown on a vertical plane, the wall thickness of the oil pipe can reach 3mm, the outer diameter of the oil pipe is 16+0/-2mmmm, and the inner diameter of the oil pipe is 10+0/-2mm.

In order to lighten the weight of the oil pipe, improve the product quality, improve the production efficiency and reduce the unit price of the product, the utility model adopts the process of integral injection molding of engineering plastics. The gram weight of the product is about 123.5g after the product is changed into a plastic part, and is reduced by 55.9 percent compared with the prior product. After changing into plastic part, because oil pipe shape is crooked Y shape, the shape is comparatively complicated, and ordinary injection mold structure can't realize drawing of patterns shaping, through water assist injection molding mould injection into the die cavity with melting plasticization's plastics form solid body, then in the body fills terminal rivers of injection certain volume and pressure and flows into the molten plastics, because the temperature low cooling solidification that the molten plastics is close to the mould surface part is fast, and the plastics temperature in oil pipe product center is high still in the molten state, and viscosity is lower, and high-pressure rivers can replace molten plastics at the thicker position of oil pipe product and form oil pipe hollow shape.

The utility model can finish the molding of the oil pipe product by using a shorter molding cycle through the water auxiliary injection mold and obtain good product surface quality. After the product is changed into an integral injection molding, the procedures of bending, welding and the like are omitted, and the consistency of the product size and the stability of the product quality are effectively ensured.

It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present utility model, and such equivalents are intended to fall within the scope of the claims appended hereto.

Claims

1. The utility model provides an injection mold is assisted to car differential mechanism oil pipe water, includes mould benevolence (1) and lower mould benevolence (4), its characterized in that go up mould benevolence (1) and lower mould benevolence (4) between form the product die cavity, be located the one end below of going up mould benevolence and form hot runner (2), hot runner (2) insert the one end of product die cavity through first runner pipe (3), go up the other end below of mould benevolence (1) and form and set up water and assist shower nozzle (7), water assist shower nozzle (7) through the other end of second runner pipe (6) access product die cavity.

2. The water-assisted injection mold for the oil pipe of the automobile differential mechanism according to claim 1 is characterized in that two hot runners (2) are vertically arranged, and two first runner pipes (3) are symmetrically distributed.

3. The automobile differential oil pipe water-assisted injection mold according to claim 1 is characterized in that the first runner pipe (3) is provided with a section of U-shaped bending pipe (8) at the middle part.

4. The automobile differential oil pipe water-assisted injection mold according to claim 1, wherein the second runner pipe (6) is of a J-shaped pipe structure.

5. An automotive differential oil pipe, characterized by being produced from the water-assisted injection mold of any one of claims 1-4.

6. An automotive differential oil tube as defined in claim 5, and being curved Y-shaped.

7. An automotive differential oil tube as claimed in claim 6, characterized in that it has an outer diameter of 16+0/-2mm and an inner diameter of 10+0/-2mm.