CN102814933A

CN102814933A - Forming mould for SD (secure digital) card

Info

Publication number: CN102814933A
Application number: CN2012103211429A
Authority: CN
Inventors: 杨振; 陈宗慧; 黄小兵
Original assignee: Shengyang Precision Mould Kunshan Co Ltd
Current assignee: Shengyang Precision Mould Kunshan Co Ltd
Priority date: 2012-09-03
Filing date: 2012-09-03
Publication date: 2012-12-12

Abstract

The invention discloses a forming mould for an SD (secure digital) card, comprising pouring units, wherein each pouring unit comprises cavities, a pouring gate, and branch pouring channels corresponding to the cavities one by one, wherein one end of each of the branch pouring channels is converged and then communicated with the pouring gate, and the other end radially extends outwards by taking the pouring gate as a centre; and the cavities are communicated with the end extending outwards, of each of the branch pouring channels. The forming mould for an SD card provided by the invention is divided by the pouring units, and the structure of the branch pouring channels and the cavities is formed by that the branch pouring channels and the cavities are radially arrayed by taking the pouring gate as a centre, so that the flow speeds and the flow rates of molten materials entering the branch pouring channels and the cavities from the pouring gate are kept to be in conformity, thus ensuring the quality of products, and being capable of reducing the degree of the influence on production due to partial faults simultaneously.

Description

A kind of SD card mould

Technical field

The present invention relates to SD card process units, relate in particular to a kind of SD card mould.

Background technology

Mostly existing SD card mould is that one goes out many structures, i.e. one-shot forming obtains a plurality of products, in order to enhance productivity, to be generally one and to go out 16 or 32 structure, the die cavity of product become two arranged in a straight line.Going out 16 SD card mould with shown in Figure 1 a kind of one is example; Comprise 16 die cavities 1, sprue gate 2, main running channel 3 and divide running channel 4 that melted material is diverted to each type through minute running channel 4 again in the main running channel 3 of sprue gate 2 inflows; In 1; Filler is synchronous as far as possible in order to guarantee all die cavities 1, has designed two sprue gates 2 (if 32 structures, also need design more sprue gate 2).This structure Design; Require 16 die cavities 1, two sprue gates 2, main running channels 3 and divide the running channel 4 all could operate as normal under trouble-free situation; If wherein break down in a place; The capital causes melted material inhomogeneous to the stream material of each die cavity 1, influences the formed product quality, and finishing must stop production; Must guarantee also that simultaneously the charging flow velocity at two sprue gates 2 is consistent with flow; Uniformity technical difficulty itself that safeguard several respective cavities just has to add other monitoring equipment simultaneously just than higher for the uniformity that guarantees charging, just further improved production cost.

Summary of the invention

Goal of the invention: in order to overcome the deficiency that exists in the prior art, the present invention provides a kind of SD card mould that only has a sprue gate, reduces design, the manufacture difficulty of SD card mould, reduces the production input of SD.

Technical scheme: for solving the problems of the technologies described above, the technical scheme that the present invention adopts is:

SD card mould; Comprise the cast unit; Each cast unit comprises die cavity, sprue gate, divides running channel one to one with die cavity; One end of said all branch running channels converges the back and is communicated with the sprue gate, and the other end is the outside radial extension in center with the sprue gate, and said die cavity is communicated with dividing the outward extending end of running channel.

The SD card mould of said structure; Divide with the cast unit; Dividing the structure of running channel and die cavity is that radial arranging carried out at the center with the sprue gate, makes flow velocity and the flow of melted material in minute running channel and die cavity that gets into from the sprue gate be consistent like this, guarantees product quality; Saidly in addition on same secondary mould, can also design a plurality of cast unit, if one of them cast unit breaks down, can stop up the sprue gate of this cast unit, other unit further are normally used, and guarantee production.

Preferably, in said each cast unit, the number of die cavity is four, six, eight, ten etc.; If adopt the die cavity number of peanut, this cast unit breaks down will be smaller to the influence of producing in the time of need stopping to produce; If adopt the die cavity number of big figure, the production cycle of single product will reduce relatively, guarantees production efficiency.

Beneficial effect: SD card mould provided by the invention; Divide with the cast unit; Dividing the structure of running channel and die cavity is that radial arranging carried out at the center with the sprue gate; Make that like this flow velocity and the flow of melted material in minute running channel and die cavity that gets into from the sprue gate is consistent, guarantee product quality; Simultaneously can reduce the influence degree that partial fault causes production.

Description of drawings

Fig. 1 is the prior art constructions sketch map;

Fig. 2 is a structural representation of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is done explanation further.

A kind of SD card mould; On every pair of mould, comprise some groups of cast unit as shown in Figure 2; Each cast unit comprises die cavity 1, sprue gate 2, divides running channel 4 one to one with die cavity 1; One end of said all branch running channels 4 converges the back and is communicated with sprue gate 2, and the other end is the outside radial extension in center with sprue gate 2, and said die cavity 1 is communicated with dividing running channel 4 outward extending ends.

In concrete said each cast unit, the number of die cavity 1 is four, six, eight, ten etc., is preferably six or eight.

The above only is a preferred implementation of the present invention; Be noted that for those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.

Claims

1.SD card mould; It is characterized in that: comprise the cast unit; Each cast unit comprises die cavity (1), a sprue gate (2), divides running channel (4) one to one with die cavity (1); One end of said all branch running channels (4) converges the back and is communicated with sprue gate (2), and the other end is the outside radial extension in center with sprue gate (2), and said die cavity (1) is communicated with dividing the outward extending end of running channel (4).

2. SD card mould according to claim 1 is characterized in that: in said each cast unit, the number of die cavity (1) is four, six, eight or ten.

3. SD card mould according to claim 1 is characterized in that: the number of said cast unit is more than one.