CN203567121U

CN203567121U - Puller pin

Info

Publication number: CN203567121U
Application number: CN201320613141.1U
Authority: CN
Inventors: 许龙云; 冯芳
Original assignee: Shengmei Precision Industrial Kunshan Co Ltd
Current assignee: Shengmei Precision Industrial Kunshan Co Ltd
Priority date: 2013-09-30
Filing date: 2013-09-30
Publication date: 2014-04-30
Anticipated expiration: 2023-09-30

Abstract

The utility model relates to a puller pin which is arranged above a feed opening and fixed on a front plate, and passes through a middle plate and stretches into a runner; the head part of the puller pin passes through the runner and is inserted into the feed opening. According to the puller pin, through the increase of the length of the puller pin and the contact area of the head part of the puller pin and stub bars, the pulling force value born by the pulling pin is increased, so that during the processes that the puller pin is loosened and a female template is separated from a male template, the middle plate is not easily separated from the female template.

Description

Draw material pin

Technical field

The utility model relates to injection mold field, relates in particular to draw material pin in a kind of three board molds.

Background technology

In adopting three board molds of point type cast gate, as shown in Figure 1, often above charging aperture 5, be provided with and draw material pin 1, the described material pin 1 that draws is fixed in header board (not shown), and stretch in runner 3 through middle plate 2, the described material pin 1 that draws is for departing from stub bar from caster 4, simultaneously when die sinking for the first time, and the resistance that in formation, plate 2 and caster 4 separate.But owing to drawing, the head of material pin 1 is shorter, and the pulling force that often can bear is less, make to draw material pin 1 to pull caster 4 to depart from male model plate (not shown) process, in appearance, plate 2 departs from caster 4.

Therefore, how to provide a kind of can bear larger pulling force draw material pin be those skilled in the art's technical problems urgently to be resolved hurrily.

Utility model content

The utility model provides a kind of material pin that draws, to solve the existing less problem of pulling force of drawing material pin to bear.

For solving the problems of the technologies described above, the utility model provides a kind of material pin that draws, and is located at the top of charging aperture, described in draw material pin to be fixed on header board, and stretch in runner through middle plate, described in draw the head of material pin to insert in described charging aperture through described runner.

Preferably, described in, draw the head of material pin to comprise the reverse buckling type structure that multilayer is arranged above and below.

Preferably, described reverse buckling type structure is four layers.

Preferably, the size of four layers of reverse buckling type structure from top to bottom diminishes successively.

The utility model provides draws material pin, is located at the top of charging aperture, described in draw material pin to be fixed on header board, and stretch in runner through middle plate, described in draw the head of material pin to insert in described charging aperture through described runner.In the utility model, draw the length of material pin by increase, increase the contact area of drawing material needle section and stub bar simultaneously, improve the value of thrust that draws material pin to bear, make to draw material pin to pull caster to depart from public template procedure, middle plate is difficult for departing from caster.

Accompanying drawing explanation

Fig. 1 is the existing structural representation that draws material pin;

Fig. 2 is the structural representation that draws material pin of the utility model one specific embodiment.

In Fig. 1: 1-draws plate, 3-runner, 4-caster, 5-charging aperture in material pin, 2-;

In Fig. 2: 10-draws plate, 30-runner, 40-caster, 50-charging aperture in material pin, 20-.

The specific embodiment

For the technical scheme of the more detailed above-mentioned utility model of statement, below list specific embodiment and carry out Proof Technology effect; It is emphasized that these embodiment are not limited to limit scope of the present utility model for the utility model is described.

Please refer to Fig. 2, the utility model provides draws material pin 10, is located at the top of charging aperture 50, described in draw material pin 10 to be fixed in header board (not shown), and stretch in runner 30 through middle plate 20, described in draw the head of material pin 10 to insert in described charging aperture 50 through described runner 30.In the utility model, by increase, draw the length of material pin 10, increase the contact area of drawing material pin 10 heads and stub bar simultaneously, improve the value of thrust that draws material pin 10 to bear, make to draw material pin 10 to pull caster 40 to depart from public template procedure, middle plate 20 is difficult for departing from caster 40.

Preferably, please continue to refer to Fig. 2, the described head of material pin 10 that draws comprises the reverse buckling type structure that multilayer is arranged above and below, in the present embodiment, described reverse buckling type structure is four layers, and the reverse buckling type structure that multilayer is arranged above and below can be when the length of material pin 10 be drawn in increase, increase the surface area in the head outside of drawing material pin 10, that is to say, can further increase the contact area of drawing material pin 10 and stub bar, improve the value of thrust that draws material pin 10 to bear.In addition, the size of four layers of reverse buckling type structure from top to bottom diminishes successively, is convenient to draw material pin 10 to depart from from caster 40 in subsequent step.

In sum, the utility model provides draws material pin 10, is located at the top of charging aperture 50, described in draw material pin 10 to be fixed on header board, and stretch in runner 30 through middle plate 20, described in draw the head of material pin 10 to insert in described charging aperture 50 through described runner 30.In the utility model, by increase, draw the length of material pin 10, increase the contact area of drawing material pin 10 heads and stub bar simultaneously, improve the value of thrust that draws material pin 10 to bear, make to draw material pin 10 to pull caster 40 to depart from public template procedure, middle plate 20 is difficult for departing from caster 40.

Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these change and modification.

Claims

1. draw a material pin, be located at the top of charging aperture, described in draw material pin to be fixed on header board, and stretch in runner through middle plate, it is characterized in that, described in draw the head of material pin to insert in described charging aperture through described runner.

2. the material pin that draws as claimed in claim 1, is characterized in that, described in draw material pin head comprise the reverse buckling type structure that multilayer is arranged above and below.

3. the material pin that draws as claimed in claim 2, is characterized in that, described reverse buckling type structure is four layers.

4. the material pin that draws as claimed in claim 3, is characterized in that, the size of four layers of reverse buckling type structure from top to bottom diminishes successively.