CN222004254U

CN222004254U - A battery cover inverted mold structure

Info

Publication number: CN222004254U
Application number: CN202323632658.8U
Authority: CN
Inventors: 李国江; 黄学平; 杨上轮
Original assignee: Dongguan Enhao Electronics Co ltd
Current assignee: Dongguan Enhao Electronics Co ltd
Priority date: 2023-12-29
Filing date: 2023-12-29
Publication date: 2024-11-15
Anticipated expiration: 2033-12-29

Abstract

The utility model relates to a battery cover flip mold structure in the mold field, wherein a water inlet is provided at the upper end of the inclined top, and the flow channel includes a first-level injection channel and a second-level injection channel, the water inlet extends into the interior of the inclined top to communicate with the first-level injection channel, the first-level injection channel and the second-level injection channel are communicated through a bend, the first-level injection channel is provided with a cold material well for maintaining concentricity with the water inlet, the cold material well sinks along the direction of the second-level injection channel, and a glue feed point is provided at the lower end of the inclined top, and there are five glue feed points, which are evenly arranged at the lower end of the inclined top, and the glue feed point extends into the interior of the inclined top to communicate with the second-level injection channel. The battery cover flip mold structure constructs a two-level turning water inlet structure by arranging a water inlet, a first-level injection channel, a second-level injection channel, a bend and five glue outlet points, which effectively avoids the high-speed and high-pressure water inlet from directly acting on the product during injection molding, thereby preventing the phenomenon of air marks on the product.

Description

Battery cover flip-chip die structure

Technical Field

The utility model relates to the field of dies, in particular to a battery cover flip-chip die structure.

Background

Numerous low-end intelligent machines designed for the elderly are introduced in the market, and such devices are favored by simple operation and reasonable price. In consideration of cost, the external structure of the mobile phone adopts a simple process, namely an injection molding technology. However, because the battery cover has larger area, appearance defects such as air streaks, miscellaneous points, welding lines, color mixing and the like are easy to occur in the injection molding process, and particularly, the problem of the injection molding air streaks at the gate position is particularly remarkable, which clearly has more strict requirements on a die and an injection molding technology.

The problem that current battery cover flip-chip mould structure still exists is: the battery cover is thin and large in area, if multi-point glue feeding is adopted, welding lines can be generated, and the appearance cannot be met; if a point glue feeding is adopted, the battery cover is thin in thickness and large in area, and the product can be fully filled by high-speed high pressure during injection molding, if the glue feeding water inlet is directly connected to the product by a traditional method, the glue feeding position is always pressed and cold materials are accumulated in the injection molding high-speed high-pressure process, so that air marks can be generated on the product, and the problem that the air marks are difficult to thoroughly solve is solved.

Disclosure of utility model

The utility model aims to solve the defects and provide a battery cover flip-chip die structure.

The object of the utility model is achieved by: the utility model provides a battery cover flip-chip mould structure, includes hot mouth and oblique top, and the inside of oblique top is equipped with the runner, the upper end of oblique top is equipped with the water inlet, and the runner includes that first order is moulded plastics and is said with the second grade and mould plastics the way, and the water inlet stretches into the inside of oblique top and carries out switching on with first order is moulded plastics the way, and first order is moulded plastics and is put through the curved way between saying with the second grade and carry out switching on, is equipped with the cold charge well that is used for keeping concentricity with the water inlet on the first order is moulded plastics the way, and the cold charge well is followed the direction of second grade and is moulded plastics the way and is sunk, and the lower extreme of oblique top is equipped with into gluey point, and into gluey point and is equipped with five, and five into gluey points evenly set up in the lower extreme of oblique top, and into gluey point stretches into the inside of oblique top and second grade and carries out switching on.

In the above description, as a further scheme, the glue inlet point includes a first glue inlet and a second glue inlet, the volume of the first glue inlet is greater than that of the second glue inlet, the first glue inlet is provided with one, and the second glue inlet is provided with four.

In the above description, as a further scheme, the length of the first glue inlet close to the second-stage injection molding channel is smaller than the length of the first glue inlet far away from the second-stage injection molding channel, and the length of the second glue inlet close to the second-stage injection molding channel is smaller than the length of the second glue inlet far away from the second-stage injection molding channel.

In the above description, as a further scheme, the top surface of the inclined top is provided with a flash port, and the flash port is communicated with the first-stage injection molding channel.

In the above description, as a further scheme, two overflow ports are provided, and the two overflow ports are symmetrically arranged at two sides of the water inlet.

In the above description, as a further aspect, the length of the first stage injection molding channel is smaller than the length of the second stage injection molding channel.

In the above description, as a further aspect, the curved line is in a circular arc shape.

The beneficial effects of the utility model are as follows: according to the battery cover flip-chip die structure, the two-stage turning water gap structure is constructed by arranging the water gap, the first-stage injection molding channel, the second-stage injection molding channel, the bend and the five glue outlet points, so that the phenomenon that a high-speed high-pressure water inlet directly acts on a product during injection molding is prevented, and in addition, a larger injection molding parameter adjustment space is provided, and the size and appearance quality of the product are controlled accurately; through setting up the cold charge well in the below position that the water inlet corresponds, in the injection molding process, once there is the cold charge to produce, in leading to the cold charge well with the cold charge after the adjustment parameter, ensure that the cold charge can not cause harmful effect to the product surface to further promote the appearance quality of product.

Drawings

FIG. 1 is a schematic perspective view of a battery cover flip-chip die structure according to the present utility model in a first orientation;

FIG. 2 is a schematic perspective view of a second orientation of a battery cover flip-chip die structure according to the present utility model;

FIG. 3 is a cross-sectional view of a battery cover flip-chip die structure according to the present utility model;

In the figure: the hot nozzle is 1-hot nozzle, the inclined top is 2-, the water inlet is 3-, the first-stage injection molding channel is 4-, the second-stage injection molding channel is 5-, the curve is 6-, the cold material well is 7-, the first glue inlet is 8-, the second glue inlet is 9-and the flash is 10-.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be illustrative of the application and are not to be construed as limiting the application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a number", "a plurality" or "a plurality" is two or more, unless specifically defined otherwise. In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

Referring to fig. 1-3, a battery cover flip-chip die structure in specific implementation thereof comprises a hot nozzle 1 and an inclined top 2, wherein a runner is arranged in the inclined top 2, a water inlet 3 is arranged at the upper end of the inclined top 2, the hot nozzle 1 is poured into the water inlet 3, the runner comprises a first-stage injection molding channel 4 and a second-stage injection molding channel 5, the water inlet 3 stretches into the interior of the inclined top 2 to be communicated with the first-stage injection molding channel 4, five glue inlet points are arranged between the first-stage injection molding channel 4 and the second-stage injection molding channel 5 through a curve 6, the five glue inlet points are uniformly arranged at the lower end of the inclined top 2, and the glue inlet points stretch into the interior of the inclined top 2 to be communicated with the second-stage injection molding channel 5, so that the high-speed high-pressure water inlet 3 directly acts on a product during injection molding is effectively avoided, and the phenomenon of air marks on the product is prevented; be equipped with on the first order is moulded plastics and is used for keeping cold charge well 7 of concentricity with inlet 3, cold charge well 7 is followed the direction subsidence of second order is moulded plastics and is said 5, and the direct express delivery of cold charge of being convenient for is hidden into cold charge, and the lower extreme on well inclined top 2 is equipped with into gluey point, in the in-process of moulding plastics, once there is the cold charge to produce, in leading cold charge to cold charge well 7 after the adjustment parameter, ensures that the cold charge can not cause harmful effect to the product surface to further promote the appearance quality of product.

Specifically, the glue inlet point comprises a first glue inlet 8 and a second glue inlet 9. The volume of the first glue inlet 8 is larger than that of the second glue inlet 9, and the design is beneficial to increasing the effective area of injection molding of the first glue inlet 8, so that the mobile phone shell with a specific model is better adapted. The first glue inlet 8 is provided with only one and the second glue inlet 9 is provided with four, which is helpful for realizing all-round covering injection molding, so that the injection molding is more comprehensive and smooth.

Specifically, the length that first glue inlet 8 is close to second level and moulds plastics the way 5 is less than the length that first glue inlet 8 kept away from second level and moulds plastics the way 5, the length that second glue inlet 9 is close to second level and moulds plastics the way 5 is less than the length that second glue inlet 9 kept away from second level and moulds plastics the way 5 for first glue inlet 8 and second glue inlet 9 are narrow down wide structure, therefore, when plastics fuse-element passes through first level and moulds plastics and say 4 and second level and mould plastics and say 5 and get into these two glue inlets, can more evenly distribute in the bottom of mould die cavity to effectively avoided the fuse-element to pile up and uneven problem in the flow in-process. In addition, due to the structural design with the narrow upper part and the wide lower part, the flow direction of the plastic melt can be better guided, so that the plastic melt can more smoothly fill the die cavity, and further, a more compact mobile phone shell product is obtained. The design scheme not only remarkably improves the injection molding efficiency, but also reduces the rejection rate, and brings great convenience to the production flow.

In this embodiment, the top surface of the inclined top 2 is provided with the flash opening 10, the flash opening 10 is communicated with the first-stage injection molding channel 4, and the flash phenomenon in the injection molding process is effectively avoided due to the design of the flash opening 10, so that the production efficiency and the product quality are improved.

Specifically, two overflow ports 10 are provided, and the two overflow ports 10 are symmetrically arranged at two sides of the water inlet 3, so that the overflow is more uniform, and the production efficiency is improved.

In this embodiment, the length of the first stage injection molding channel 4 is smaller than that of the second stage injection molding channel 5, and the first stage injection molding channel 4 is rapidly filled with molten material under the action of high temperature and high pressure due to the shorter length of the first stage injection molding channel 4. The melt then flows through the bend 6 connecting the first stage and second stage injection channels 5 to the second stage injection channels 5. Due to the longer length of the second stage injection channels 5, the melt is further cooled and stabilized during the flow process, helping to reduce the internal stress and shrinkage of the molded article.

In this embodiment, the curved channel 6 is circular arc-shaped, which not only meets the production requirements, but also prevents the molten material from being retained and cooled too quickly.

The injection molding process of the embodiment of the utility model comprises the following steps: the material sequentially enters the water inlet 3, the first-stage injection molding channel 4, the bend 6 and the second-stage injection molding channel 5 from the hot nozzle 1, and finally enters the die cavity from five injection molding points respectively.

The foregoing is a further detailed description of the utility model in connection with specific further embodiments, and is not intended to limit the practice of the utility model to such descriptions. It should be understood by those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the present utility model, and the present utility model is not limited to the above-mentioned embodiments.

Claims

1. The utility model provides a battery cover flip-chip mould structure, includes hot mouth and oblique top, and the inside of oblique top is equipped with the runner, its characterized in that, the upper end of oblique top is equipped with the water inlet, and the runner includes that first order is moulded plastics and is said with the second grade and mould plastics the way, and the water inlet stretches into the inside of oblique top and carries out the switch-on with first order is moulded plastics the way, carries out the switch-on through the curved way between first order is moulded plastics the way and the second grade is said and is equipped with the cold charge well that is used for keeping concentricity with the water inlet on the first order is moulded plastics the way, and the cold charge well is followed the direction of second grade and is moulded plastics the way and is sunk, and the lower extreme of oblique top is equipped with into gluey point, advances gluey point and is equipped with five, and five gluey points of advance evenly set up in the lower extreme of oblique top, advances gluey point and stretches into the inside and the second grade of oblique top and carries out the switch-on.

2. The battery cover flip-chip die structure of claim 1, wherein the glue inlet comprises a first glue inlet and a second glue inlet, the first glue inlet has a volume larger than that of the second glue inlet, the first glue inlet is provided with one, and the second glue inlet is provided with four.

3. The battery cover flip-chip die structure of claim 2, wherein the length of the first glue inlet close to the second-stage injection molding channel is smaller than the length of the first glue inlet far away from the second-stage injection molding channel, and the length of the second glue inlet close to the second-stage injection molding channel is smaller than the length of the second glue inlet far away from the second-stage injection molding channel.

4. The flip-chip die structure of a battery cover according to claim 1 or 2, wherein the top surface of the inclined top is provided with a flash port, and the flash port is communicated with the first-stage injection molding channel.

5. The flip-chip die structure of claim 4, wherein two overflow openings are symmetrically arranged at two sides of the water inlet.

6. The battery cover flip-chip die structure of claim 1 or 2, wherein the length of the first stage injection molding channel is smaller than the length of the second stage injection molding channel.

7. The battery cover flip-chip die structure according to claim 1 or 2, wherein the curved channel is circular arc-shaped.