CN2673618Y

CN2673618Y - Spot pouring mouth plastic mould

Info

Publication number: CN2673618Y
Application number: CN 200420020354
Authority: CN
Inventors: 李新贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-02-19
Filing date: 2004-02-19
Publication date: 2005-01-26
Anticipated expiration: 2014-02-19

Abstract

The utility model discloses a spot pouring mouth plastic die, comprising a cavity die, a slug die and an outboard assembly. A cavity is arranged between the cavity die and the slug die, the cavity die is provided with a point-divided pouring mouth flow channel. The outside of the cavity die is connected with a pouring mouth stripper plate and a fixed die compound plate which is provided with a main flow channel lining or / and a material pulling rod. A main flow channel is arranged in the main flow channel lining, the main flow channel lining or / and the material pulling rod are arranged in the pouring mouth stripper plate. Heads of the main flow channel lining or / and the material pulling rod are in the shape of a rotary grinder, and an external wall of the rotary grinder-shaped head is provided with a waste materials strong discharging recess. The main flow channel lining or the main flow channel lining and the material pulling rod area arranged in the pouring mouth stripper plate, and the heads are made into the shape of the rotary grinder, so that the lengths of the main flow channel and the point-divided pouring mouth flow channel are shortened, the cooling and forming time is shortened at the time of process. Therefore, the utility model has the advantages of improving efficiency, reducing the loss of injecting pressure, increasing speed, reducing plastic waste and reducing cost. The pouring mouth stripper plate is pulled out when the die is opened, so that the pouring mouth can automatically drop out without the need of manual work or mechanical hands for taking out.

Description

Point cast gate mould of plastics

Technical field

The utility model relates to injection mold, mainly relates to mould of plastics sprue and branch cast gate (single-point or multiple spot) runner and improves design.

Background technology

Injection mold mainly contains swaging die and core mould, in the core mould outside core base plate is arranged, upper and lower top board and dynamic model compound plate, form by institutes such as cast gate stripper plate and cover half compound plates in the swaging die outside, in swaging die, be shaped on branch cast gate runner, in the cover half compound plate, be equipped with sprue bush, be shaped on sprue in the sprue bush, the sprue of existing mold is or/and branch cast gate runner is very long, its shortcoming is: one, long because of sprue length and branch cast gate flow channel length, during production the injection pressure loss big, cool time is long, prolonged the production cycle, inefficiency; Two, the waste material difficulty that comes off after the die sinking will rely on craft or manipulator to take out the cast gate waste material; Three, waste material is many, the production cost height.

Summary of the invention

The purpose of this utility model provides a kind of sprue and branch cast gate runner is short, and the production cycle is fast, efficient height, the some cast gate mould of plastics that waste material is few.

The technical scheme of the utility model point cast gate mould of plastics is: swaging die and core mould and lateral components are arranged, between swaging die and core mould, die cavity is arranged, be shaped on a cast gate runner in the swaging die, connect cast gate stripper plate, cover half compound plate in the swaging die outside, sprue bush is installed or/and sprue puller in the cover half compound plate, be shaped on sprue in the sprue bush, it is characterized in that sprue bush or/and sprue puller is pacified in the cast gate stripper plate, sprue bush is or/and the head of sprue puller is the truncated cone-shaped head, is shaped on waste material at the outer wall of truncated cone-shaped head and takes off groove by force.The utility model has only sprue bush for the single-point mould with pin point gate; And, sprue bush and sprue puller are arranged simultaneously for the multiple spot mould with pin point gate.The technical program and is made truncated cone-shaped with head because sprue bush or sprue bush and sprue puller are pacified in the cast gate stripper plate, and sprue and branch cast gate flow channel length are shortened, and adds and has shortened the cooling forming time man-hour, has improved production efficiency.Reduce the loss of injection pressure simultaneously, improved injection speed.And the minimizing plastic waste reduces cost.Add that again being shaped on waste material at sprue bush or the head outer wall that pulls the truncated cone-shaped of bar takes off groove by force, after the die sinking, the cast gate stripper plate is released, and cast gate can come off automatically, need not artificial or manipulator takes out.

Description of drawings

Fig. 1 is that the utility model point cast gate mould of plastics multipoint mode is constructed a kind of embodiment schematic diagram;

Fig. 2 is that the utility model point cast gate mould of plastics single-point type is constructed a kind of embodiment schematic diagram.

The specific embodiment

The utility model discloses a kind of some cast gate mould of plastics, swaging die 7 and core mould 10 and lateral components are arranged, lateral components can have the core base plate 13 of connecting-type core 10, insert 12, leading rod 11 has upper plate 15 and lower roof plate 16 outside the core base plate 13, and dynamic model compound plate 19, be positioned on the pillar 14 on the dynamic model compound plate 19, in lower roof plate 16 and core base plate 13, release link 18 and back-moving spring 17 arranged.Between swaging die 7 and core mould 10, die cavity 9 is arranged, be shaped on branch cast gate runner 8 in the swaging die 7,8 ', connect cast gate stripper plate 2 in the swaging die outside, cover half compound plate 1, sprue bush 3 is installed or/and sprue puller 6 in the cover half compound plate 1, because in the single-point gating pattern, can not have sprue puller, has only sprue bush 3, as shown in Figure 2, and in the multi-point sprue mould existing sprue bush 3, sprue puller 6 is arranged again, as shown in Figure 1, be shaped on sprue 4 in the sprue bush 3, major technique is characterised in that sprue bush 3 or/and sprue puller 6 peaces are gone in the cast gate stripper plate 2, and sprue bush 3 is or/and the head of sprue puller 6 is truncated cone-shaped heads 22,20, at truncated cone-shaped head 22,20 outer wall is shaped on waste material and takes off groove 21 by force.Branch cast gate runner in swaging die 7 can be divided into single-point cast gate runner 8 ' (as shown in Figure 2) or multi-point sprue runner 8, sprue 4 and branch cast gate runner 8,8 ' all are very short, reduce waste material, can come off automatically, between sprue 4 and branch cast gate runner 8, runner 5 is arranged.Its sprue bush 3 or sprue puller 6 can be pacified in the swaging die 7, and it is more than two or two that the made waste material of truncated cone-shaped head 22,20 outer walls of sprue bush or sprue puller takes off groove 21 by force, i.e. many grooves 21.

Claims

1, point cast gate mould of plastics, swaging die and core mould and lateral components are arranged, between swaging die and core mould, die cavity is arranged, be shaped on branch cast gate runner in the swaging die, connect the cast gate stripper plate in the swaging die outside, the cover half compound plate, sprue bush is installed or/and sprue puller in the cover half compound plate, be shaped on sprue in the sprue bush, it is characterized in that sprue bush (3) or/and sprue puller (6) peace is gone in the cast gate stripper plate (2), sprue bush (3) is or/and the head of sprue puller (6) is a truncated cone-shaped head (22,20), at truncated cone-shaped head (22,20) outer wall is shaped on waste material and takes off groove (21) by force.

2, as claimed in claim 1 some cast gate mould of plastics is characterized in that the branch cast gate runner in the swaging die (7) is single-point cast gate runner (8 ') or multi-point sprue runner (8).

3, as claimed in claim 1 some cast gate mould of plastics, it is characterized in that sprue bush (3) or sprue puller (6) peace goes in the swaging die (7), it is more than two or two that the waste material of the truncated cone-shaped head of sprue bush or sprue puller (22,20) outer wall takes off groove (21) by force.