CN205704988U - A kind of battery cover die joint annular integral type mold insert - Google Patents

Abstract

The utility model provides a ring-shaped integrated insert on the parting surface of a battery cover, which includes an insert body, a screw hole for being installed on a mold through screws is arranged under the insert body, and a mold cavity is above the insert At the center of the insert, an annular exhaust groove with a depth of 0.2mm and a width of 4.0mm is opened at a distance of 3.0mm below the end of the cavity. Features insert clip wire. The utility model can overcome the problem that the parting surface of the mold is runaway due to excessive injection pressure, and at the same time avoids problems such as surface air marks and deformation.

Description

A ring-shaped integrated insert on the parting surface of a battery cover

technical field

The utility model belongs to the technical field of battery cover production design, in particular to a ring-shaped integrated insert on the parting surface of the battery cover.

Background technique

At present, for the battery cover products of mobile phones, there are the following difficult problems to deal with: surface air marks, deformation, excessive injection pressure causing the parting surface to be draped, etc. It is difficult to solve such problems. The traditional method is to add rows in the middle of the battery cover. For air inserts, vent grooves are opened on the parting surface to induce air. This method improves the product's weld line and air marks, but cannot solve the problem of running over the parting surface due to excessive injection pressure; the product size is also unstable. The defect rate is high, and the follow-up is not feasible for mass production.

Utility model content

Aiming at the above technical problems, the utility model provides a ring-shaped integrated insert on the parting surface of the battery cover, which can overcome the mold parting surface runaway caused by excessive injection pressure, and at the same time avoid problems such as surface air marks and deformation.

The technical scheme adopted by the utility model is as follows. A ring-shaped one-piece insert on the parting surface of the battery cover includes an insert body. A screw hole is provided under the insert body for being installed on the mold by screws. The insert Above is the cavity end, and an annular exhaust groove with a depth of 0.2mm and a width of 4.0mm is opened at a distance of 3.0mm below the cavity end in the middle of the insert. There is an insert grip line below the cavity end.

Preferably, the insert body is also provided with several vertical exhaust grooves communicating with the annular exhaust grooves, and the vertical exhaust grooves are distributed around the sides of the insert.

Preferably, the vertical exhaust groove has a depth of 0.2mm and a width of 4.0mm.

The utility model not only solves the problem of parting surface draping, but also reduces the injection pressure, shortens the molding cycle, and significantly reduces the air marks on the surface of the product by improving the exhaust of the previous annular one-piece insert on the parting surface. The appearance quality and yield rate of the product are improved, the mass production of the project is ensured, and the labor cost of pressing the parting surface is reduced.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

The utility model is described in detail below in conjunction with the description of the accompanying drawings. It should be understood that the following is only an introduction to the specific implementation of the utility model, and is not intended to limit the protection scope of the utility model.

Generally, when the mobile phone case is injection molded, if ordinary fixtures are used for injection molding, due to the high injection pressure, the parting surface will run out of shape.

The utility model is improved, as shown in Figure 1, a battery cover parting surface ring-shaped one-piece insert, including the insert body 1, and the bottom of the insert body 1 is provided with a screw hole for being installed on the mold by a screw 2. The top of the insert body 1 is the cavity end 3, and an annular exhaust groove 4 with a depth of 0.2mm and a width of 4.0mm is opened in the middle of the insert body 1 at a distance of 3.0mm below the cavity end 3. The outer periphery of the insert body 1 has an insert clip line 5 above the annular exhaust groove 4 and below the cavity end, and the insert clip line 5 is used to fix the edge of the mobile phone case. When the one-piece insert is used for injection molding, the parting surface will not run out of the front. Regarding the position of the clip line, the distance from the cavity end is designed according to the specific requirements of the mobile phone case. The clip line cannot affect the appearance of the product.

The insert body 1 is also provided with several vertical exhaust grooves 6 communicating with the annular exhaust groove 4 , and the vertical exhaust grooves 6 are distributed around the side of the insert body 1 . The combination of vertical exhaust grooves and circular exhaust grooves has a better exhaust effect and is less likely to trap air, which can reduce air marks and improve product accuracy.

The vertical exhaust groove 6 has a depth of 0.2mm and a width of 4.0mm.

During production, the back mold and inserts are cut with thick lines, put the inserts into the back mold, make a jig at the bottom of the insert, fix it on the back mold with screws and EDM together, the integrated insert can pass through during injection molding Fix the mold with screws from the reverse side of the back mold. In order to avoid the fit between the insert and the back mold too loose or too tight due to processing errors, the accuracy must be grasped when cutting the insert, and the fit clearance should be controlled within 0-0.02mm within.

The embodiment of the utility model is only to introduce its specific implementation, not to limit its protection scope. Those skilled in the industry can make some modifications under the inspiration of this embodiment, so all equivalent changes or modifications made according to the patent scope of the utility model belong to the scope of the patent claims of the utility model.

Claims (3)

1. A ring-shaped integrated insert on the parting surface of the battery cover, characterized in that it includes an insert body, a screw hole for being installed on the mold by screws is provided under the insert body, and a screw hole is arranged on the top of the insert body For the cavity end, an annular exhaust groove with a depth of 0.2mm and a width of 4.0mm is provided in the middle of the insert body at a distance of 3.0mm below the cavity end. The outer circumference of the insert body is above the annular exhaust groove, There is an insert grip line below the cavity end. 2. A ring-shaped one-piece insert on the parting surface of the battery cover according to claim 1, wherein the insert body is also provided with a number of vertical exhaust grooves communicating with the annular exhaust groove. Straight exhaust grooves are distributed around the sides of the insert body. 3 . The battery cover parting surface annular one-piece insert according to claim 2 , wherein the vertical exhaust groove has a depth of 0.2 mm and a width of 4.0 mm. 4 .