CN200967261Y

CN200967261Y - Plug mould

Info

Publication number: CN200967261Y
Application number: CN 200620140035
Authority: CN
Inventors: 林作钱
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-14
Filing date: 2006-11-14
Publication date: 2007-10-31
Anticipated expiration: 2016-11-14

Abstract

The utility model relates to a rubber plug mold, which is characterized in that the utility model is composed of an overlapping fixed mold and a movable mold; the utility model is provided with a plurality of mold cavities, and each mold cavity is provided with a model cavity bushing in the movable mold and a top bar in the model cavity bushing; the third parting plate in the fixed mold is provided with a core stepped bushing; the core stepped bushing forms point pouring; the first parting plate in the fixed mold is provided with a material-drawing screw bushing; the second parting plate in the fixed mold is provided with a material-drawing screw; the clearance of the core stepped bushing bottom, the model cavity bushing, the upper part of the top bar and the third parting plate forms the model cavity. With the said scheme, the utility model has the following advantages: 1. the sprue introduces materials from the inner top of the product and the outer appearance of the produce has no bruises; 2. the model cavity is arranged in the movable mold and when the mold is opened, the mold falls off easily and the rubber plug drops material smoothly, greatly improving production rate; 3. the top bar is arranged in the outer top of the product and the exhausting is unblocked when injection molding.

Description

A kind of plug and mould

Technical field

The utility model belongs to a kind of mould, specifically belongs to the injection mold of making the syringe rubber plug special use.

Background technology

At present, exceed standard though know the monoxide of natural rubber perfectly well, can influence human beings'health, syringe rubber plug also all adopts natural rubber manufacturing (raw material of U.S.'s strict regulations syringe rubber plug can not adopt natural rubber) basically.The plug of syringe can be used PVC and the injection mo(u)lding of PP elastomer, the elasticity of these two kinds of material is all than natural rubber difference, in actual applications, because of factors such as time, weather, silication cause syringe leakage phenomenon to occur, thereby can not fundamentally reverse the trend of natural rubber as the syringe rubber plug raw material.

Plug with PVC and PP elastomer, employing top or the injection moulding of submarine feeding manner all is two road sealing rings at present, be top edge and feather edge two road sealing rings, the ring of this structure plug point place radius is big, it is not obvious to protrude, thereby causes problems such as demoulding difficulty, plug outward appearance are ugly, poor sealing.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of plug and mould is provided, this mould gate is from the product cavity charging, the intact trace of product external surfaces, and the demoulding is light, the plug blanking is smooth, the plug ring point place radius that adopts this mould to produce is little, protrusion is obvious, and the good airproof performance of plug, and the resistance between the syringe barrel is little.

In order to solve the problems of the technologies described above, the utility model is by the following technical solutions: a kind of plug and mould, it is characterized in that: by cover half, the superimposed successively composition of dynamic model, in be provided with a plurality of die cavitys, each die cavity is provided with die cavity edge cover in the dynamic model the inside, with the push rod in die cavity edge cover, in the three parting line plate the inside of cover half core ladder edge cover is set, form hole irrigation in the core ladder edge cover, draw material nail edge cover in the first somatotype panel the inside setting of cover half, the material nail is drawn in second somatotype panel the inside setting at cover half, and the core ladder is inlayed bottom the cover and die cavity edge cover, push rod top, the gap that the three parting line plate surrounds forms die cavity.

In order to solve the problems of the technologies described above, the utility model also adopts following further technical scheme:

Described hole irrigation lower end undergauge moulding cast gate is gradually expected easy breakpoint with fixed attention.

It also is provided with top board, is provided with resetting-mechanism between described dynamic model and top board.

Described resetting-mechanism is made up of release link and back-moving spring, and the upper end of release link is arranged on the moving platen of dynamic model, dynamic model baffle plate position, and the push rod fixed head of lower end and top board is fixed.

By above scheme as can be known, the utlity model has following advantage: 1, cast gate is from the inner tip charging of product, the intact trace of product external surfaces; 2, die cavity is built up in the dynamic model part, and the demoulding is light during die sinking, the plug blanking is smooth, has improved productivity ratio greatly; 3, push rod is built up in the outer top of product, and exhaust is unimpeded during injection moulding.

Description of drawings

Fig. 1, cutaway view of the present utility model;

Fig. 2, be the structure chart of die cavity;

Fig. 3, be the partial enlarged drawing of Fig. 2;

Fig. 4, for injection moulding finish the back the first somatotype panel the state diagram of beginning somatotype;

The beginning somatotype state diagram of Fig. 5, the second somatotype panel;

The beginning somatotype state diagram of Fig. 6, three parting line plate;

Fig. 7, be plug demoulding state diagram;

Fig. 8, be the plug demoulding state diagram that finishes.

The specific embodiment

As Fig. 1, Fig. 2, shown in Figure 3, a kind of cast gate is from the plug and mould of product cavity charging, its major part comprises: cover half 1, dynamic model 2, top board 3,5 five parts of mould pin 4 and dynamic mould fixing plate, wherein cover half 1 is by guide pillar superimposed contraposition about in the of 6, cover half 1 is divided into the first somatotype panel 12, the second somatotype panel 11, three parting line plate 13, dynamic model 2 is divided into moving platen 21, dynamic model baffle plate 22, two boards connects together with bolt, top board 3 is divided into push rod fixed head 31, push rod gripper shoe 32, two boards connects together with bolt, push rod gripper shoe 32 links to each other with knock-pin 9, dynamic model baffle plate 22, mould pin 4 and dynamic mould fixing plate 5 usefulness bolts connect together.3 on dynamic model 2 and top board are provided with resetting-mechanism, and this resetting-mechanism is made up of release link 102 and back-moving spring 101, and the upper end of release link 102 is arranged on moving platen 21, dynamic model baffle plate 22 positions of dynamic model 2, and lower end and push rod fixed head 31 are fixing.

The first somatotype panel 12 at cover half 1, the second somatotype panel 11, three parting line plate 13, the moving platen 21 of dynamic model 2, dynamic model baffle plate 22 the insides are provided with a plurality of die cavitys 7, each die cavity 7 is provided with die cavity edge cover 71 at the position of moving platen 21 the insides, with the push rod 72 in die cavity edge cover 71, the lower end of push rod 72 and push rod fixed head 31 are fixing, core ladder edge cover 73 is set at the position of three parting line plate 13 the insides of cover half 1, form hole irrigation 81 in the core ladder edge cover 73, hole irrigation 81 lower ends undergauge moulding cast gate are gradually expected easy breakpoint 84 with fixed attention, be provided with at the position of the first somatotype panel, 12 the insides of cover half 1 and draw material nail edge cover 74, be provided with at the position of the second somatotype panel, 11 the insides of cover half 1 and draw material nail 75, with drawing material to nail on the screw 76 of portion, each mold insert holds together.Core ladder edge cover 73 bottoms and die cavity edge cover 71, push rod 72 tops, three parting line plate 13 surround certain clearance and then form die cavity 85, form plug after these die cavity 85 injection mouldings, die cavity 7 communicates by hole irrigation 81, runner 82, straight channel 83 and injection hole 86.

Injection machine will expect to inject from injection hole 86 during use, material injects die cavity 85 by straight channel 83, runner 82, hole irrigation 81, the injection mo(u)lding plug, when injection moulding finishes die sinking, elder generation begins somatotype from the lower surface of the first somatotype panel 12 of cover half 1, and as shown in Figure 4, cast gate is expected easy breakpoint 84 fractures with fixed attention, coagulate to expect to stay and draw on the material nail 75, somatotype is to certain distance; The lower surface of the second somatotype panel 11 begins somatotype then, as shown in Figure 5, draws material nail 75 to leave and coagulates material, and making with fixed attention, material comes off automatically; Carry out the lower surface somatotype of three parting line plate 13 again, as shown in Figure 6, core ladder edge cover 73 leaves plug, and plug is stayed in the die cavity edge cover 71; Last knock-pin 9 is under the injection machine push rod promotes, promote top board 3, push rod 72 is travelled forward, as shown in Figure 7, thereby plug is ejected die cavity edge cover 71, plug all comes off automatically, after the injection machine push rod resets, top board 3 resets under the effect of spring 101, as shown in Figure 8, finishes whole injection moulding process.

Claims

1, a kind of plug and mould, it is characterized in that: by cover half (1), the superimposed successively composition of dynamic model (2), in be provided with a plurality of die cavitys (7), each die cavity (7) is provided with die cavity edge cover (71) in dynamic model (2) the inside, with the push rod (72) in die cavity edge cover (71), three parting line plate (13) the inside at cover half (1) is provided with core ladder edge cover (73), form hole irrigation (81) in the core ladder edge cover (73), material nail edge cover (74) is drawn in the first somatotype panel (12) the inside setting at cover half (1), material nail (75) is drawn in the second somatotype panel (11) the inside setting at cover half (1), and the core ladder is inlayed bottom the cover (73) and die cavity edge cover (71), push rod (72) top, the gap that three parting line plate (13) surrounds forms die cavity (85).

2, a kind of plug and mould as claimed in claim 1 is characterized in that: described hole irrigation (81) lower end undergauge moulding cast gate is gradually expected easy breakpoint (84) with fixed attention.

3, a kind of plug and mould as claimed in claim 1 or 2 is characterized in that: it also is provided with top board (3), is provided with resetting-mechanism between described dynamic model (2) and top board (3).

4, a kind of plug and mould as claimed in claim 3, it is characterized in that: described resetting-mechanism is made up of release link (102) and back-moving spring (101), the upper end of release link (102) is arranged on moving platen (21), dynamic model baffle plate (22) position of dynamic model (2), and the push rod fixed head (31) of lower end and top board (3) is fixing.

5, a kind of plug and mould as claimed in claim 1 or 2 is characterized in that: described die cavity (7) leads to hole irrigation (81), runner (82), straight channel (83) and injection hole (86) and communicates.

6, a kind of plug and mould as claimed in claim 1 or 2 is characterized in that: cover half (1) is by the superimposed up and down contraposition of guide pillar (6).