CN201271966Y

CN201271966Y - Mould structure capable of improving press key type products surface butt fusion mark

Info

Publication number: CN201271966Y
Application number: CNU2008202183543U
Authority: CN
Inventors: 赵政
Original assignee: China Hualu Panasonic AVC Networks Co Ltd
Current assignee: China Hualu Panasonic AVC Networks Co Ltd
Priority date: 2008-10-06
Filing date: 2008-10-06
Publication date: 2009-07-15
Anticipated expiration: 2018-10-06

Abstract

The utility model discloses a mould structure, in particular to a mould structure which improves the weld marks on the surface of a keyboard product. The utility model comprises a male mould connected with a male mould board, and a female mould which is connected with a female mould board and matched with the male mould; the male mould comprises front surfaces and side surfaces; the utility model is characterized in that a stopping salient is arranged on a group of opposite side surfaces; the stopping salient is arranged on the location of the group of opposite side surfaces near the feed hole of the mould. When the mould is combined for producing a product, when flowing material enters a mould cavity, the stopping salient can play the role of stopping the floating material, forcing the material to flow to the front surface, and then flow from the other directions of the front surface, thus eliminating the possibility of the material to converge in the front surface, and simultaneously eliminating the phenomenon of weld marks on the front surface, ensuring the front surface of the product to have non weld marks, and improving the appearance quality.

Description

Improve the mould structure of button based article surface weld mark

Technical field

The utility model relates to a kind of mould structure, particularly a kind of mould structure that improves button based article surface weld mark.

Background technology

The button based article of plastic material mostly is box-like shell structure, has a front to constitute with the side that links to each other with the front.Process this based article and be utilize formed in mould, existing mould is that a punch that links to each other with convex template and the die that links to each other with concave template are arranged, punch and die match, when punch and die matched moulds, between it, form a die cavity, utilize injection-moulding device in die cavity, to charge into plastic raw materials again, after the moulding again die sinking carry out the demoulding.The button based article of this mould structure production weld mark can occur in the front, reason is can flow till being full of die cavity to different directions after the raw material that flows enters die cavity, in flow process, can not control its flow direction, inevitably occur at place, the front of goods various flows to the situation converged of raw material, weld mark can occur at meet, influence the presentation quality of product.

Summary of the invention

The purpose of this utility model provides a kind of mould structure that improves button based article surface weld mark, overcomes the deficiencies in the prior art.

The mould structure that improves button based article surface weld mark of the present utility model, the die that it comprises the punch that links to each other with convex template, link to each other with concave template and match with punch, described punch is made of positive and side, it is characterized in that: on one group of relative side of punch, be provided with the backgauge projection, the backgauge projection be positioned at one group of relative side apart from the die feeding mouth more nearby.

The mould structure that improves button based article surface weld mark of the present utility model, owing on one group of relative side of punch, be provided with the backgauge projection, the backgauge projection be positioned at one group of relative side apart from the die feeding mouth more nearby, therefore, when the material that flows enters die cavity, the backgauge projection can play the effect that stops to the material that flows, force feed stream to the front, again from just flowing towards other direction, eliminated the possibility that raw material converges in the front, eliminate the positive phenomenon that weld mark occurs simultaneously, guaranteed goods front weldless trace, improved presentation quality.

Description of drawings

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

The specific embodiment

As shown in the figure: 1 is convex template, is connected with punch 2 on convex template 1, and punch 2 is made of front 3 and side 4.Be furnished with die mutually with punch 2, die is connected with concave template.Punch 2 is a dynamic model in the use, and die is a cover half.When punch 2 and die matched moulds, between it, form die cavity, in die cavity, charge into raw material and can form goods.On the one group of relative side 4 on the punch 2, be provided with backgauge projection 5, backgauge projection 5 be positioned at one group of relative side 4 apart from die feeding mouth 6 more nearby.When punch 2 and die matched moulds, backgauge projection 5 places are because the existence of backgauge projection 5 diminishes the space between two moulds, and most raw material can flow from the front and occur converging in other side, and do not converge in the front, effectively eliminated the positive situation that weld mark occurs.

Claims

1, a kind of mould structure that improves button based article surface weld mark, the die that it comprises the punch (2) that links to each other with convex template (1), link to each other with concave template and match with punch (2), described punch (2) is made of positive (3) and side (4), it is characterized in that: on relative one group of side (4), be provided with backgauge projection (5), backgauge projection (5) be positioned at relative one group of side (4) apart from the die feeding mouth more nearby.