CN216506538U

CN216506538U - Automatic runner structure of cutting of mould

Info

Publication number: CN216506538U
Application number: CN202122994109.XU
Authority: CN
Inventors: 陈志伟; 周正杰; 王晓; 徐友兵
Original assignee: Era Co Ltd
Current assignee: Era Co Ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-05-13
Anticipated expiration: 2031-11-25

Abstract

The utility model provides an automatic sprue cutting structure of a mold, and belongs to the technical field of injection molding processing. It has been solved and has moulded plastics the waste material on the current shaping work piece and cut inconveniently, and the waste material of moulding plastics takes out inconvenient problem simultaneously. This automatic runner structure of cutting of mould includes cover half and movable mould, has the molding chamber between cover half and the movable mould, and sliding connection has the slide on the movable mould, makes the gliding guide post of slide when being connected with the die sinking on the cover half, and one side that the movable mould moved towards the cover half has the pouring runner, and the upper surface of slide pastes and leans on the cover half, and sets up the intercommunication runner that communicates pouring runner and molding chamber. This automatic runner structure of cutting of mould has the waste material of moulding plastics shearing convenience on improving the shaping work piece, improves the advantage of the convenience of taking out of the waste material of moulding plastics simultaneously.

Description

Automatic runner structure of cutting of mould

Technical Field

The utility model belongs to the technical field of injection molding processing, and relates to an automatic sprue cutting structure of a mold.

Background

The mold is a tool used to make a shaped article. The mold generally comprises a fixed mold and a movable mold capable of moving relative to the fixed mold, wherein a molding cavity for processing a workpiece and a pouring runner communicated with the molding cavity are arranged between the fixed mold and the movable mold. When a mold is used for processing a workpiece, plastic melt flows into the molding cavity through the pouring runner, and after the workpiece in the molding cavity is molded, injection molding waste materials are formed at the joint of the pouring runner and the molding cavity, so that the injection molding waste materials attached to the workpiece need to be manually trimmed after the workpiece is demoulded.

Disclosure of Invention

The utility model aims to provide an automatic sprue cutting structure of a mold aiming at the problems in the prior art, and solves the problems that the injection molding waste on a formed workpiece is inconvenient to cut and the injection molding waste is inconvenient to take out.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides an automatic runner structure of cutting of mould, includes cover half and movable mould, the molding chamber has between cover half and the movable mould, a serial communication port, sliding connection has the slide on the movable mould, make the gliding guide post of slide when being connected with the die sinking on the cover half, the movable mould has the pouring runner towards one side of cover half, the upper surface subsides of slide lean on the cover half, and set up the intercommunication runner that feeds through pouring runner and molding chamber.

During injection molding, the plastic melt flows to the molding cavity after pouring the runner and communicating the runner in proper order, the waste material of moulding plastics that leads to the shaping along with the molding workpiece is left in the communicating runner, during the die sinking, the relative cover half of movable mould removes, meanwhile, the slide can move along the relative movable mould of guide post, because of the molding workpiece in this in-process molding cavity is in quiescent condition, the removal of slide can produce the shearing force to molding workpiece and waste material of moulding plastics, make molding workpiece and waste material disconnection of moulding plastics, this structure can realize the cutting off of waste material of moulding plastics on the molding workpiece through the inner structure of mould, avoid artificially cuting the waste material of moulding plastics on the molding workpiece, improve the convenience that the waste material of moulding plastics was cuted on the molding workpiece from this. After the die sinking, movable mould and cover half are in the state of separation, operating personnel can conveniently take out the shaping work piece from between cover half and the movable mould this moment, because of the pouring runner is located the movable mould towards one side of cover half, and the slide pastes the intercommunication runner that the upper surface that leans on the cover half was equipped with intercommunication pouring runner and shaping chamber, make the waste material of moulding plastics all be in the position that operating personnel easily touched with the shaping work piece is the same, make operating personnel can also conveniently take out the waste material of moulding plastics when taking out the shaping work piece, improve the convenience of taking out of the waste material of moulding plastics when improving the convenience of moulding plastics waste material shearing on the shaping work piece from this.

In the above automatic gate structure of cutting of mould, the slide is rectangular form, the intercommunication runner includes the main road of intercommunication pouring runner and the branch road of intercommunication shaping chamber, the main road extends to the terminal surface of slide, the branch road extends to the side of slide. This structure reduces the moving resistance of slide through the position setting to the inflow port and the egress opening of plastics fuse-element for the waste material of moulding plastics that can comparatively laborsavingly cut shaping work piece and connect above that through the removal of slide.

In the above automatic gate cutting structure of the mold, the branch has a flow guiding section communicated with the molding cavity and a contraction section communicated with the main path, and a flow area of the flow guiding section is larger than a flow area of the contraction section. Because of the plastics fuse-element directly flows into the shaping chamber behind the branch road, and the shrink section flows to the last runner in shaping chamber, reduces through the flow area to this section for the sectional area of shrink section and shaping chamber junction is also less, so after the work piece shaping in the shaping chamber, the sectional area of shrink section department shaping runner is also less, and this structure reduces the removal resistance of slide, further makes the slide can cut shaping work piece and the waste material of moulding plastics connected on it comparatively laborsavingly.

In the above automatic gate cutting structure for a mold, the contraction section is connected with the flow guide section to form a step surface, and the flow area of the contraction section in the direction from the flow guide section to the contraction section is gradually reduced. The step is to mentioning the effect of buffering from the plastic melt that the shrink section flows to each shaping intracavity, produces great pressure when avoiding follow-up flow through the shrink section, and the structure setting of shrink section furthest reduces the flow area of shaping runner, further makes the slide can cut shaping work piece and the waste material of moulding plastics connected above that comparatively laborsavingly.

In the above automatic gate structure of cutting of mold, the pouring runner is in a strip shape, the slide is located at the end of the pouring runner, the outer wall of the movable mold is provided with a pushing hole communicated with the pouring runner, and the orifice of the pushing hole faces the fixed mold. The position of slide sets up to follow-up mode with the top and takes out the waste material of moulding plastics and lay down the basis, and the slide after removing promptly can not lead to the fact the interference to taking out of the waste material of moulding plastics, can also make the waste material of moulding plastics that is located intercommunication runner and pouring runner take out simultaneously, through stretching into the ejection hole with the ejection post, can be ejecting towards the cover half to the waste material of moulding plastics, further improves the clean convenience of the waste material of moulding plastics.

In the above automatic gate cutting structure of the mold, the number of the branches is two, and the openings of the two branches are respectively located at two opposite sides of the slide seat. Through the increase of branch road quantity, can improve the speed that the plastics fuse-element flows to the shaping chamber from the pouring runner, can also be suitable for the structure that has a plurality of shaping chambers between movable mould and the cover half, can cut off in step with the being connected of the waste material many places of moulding plastics simultaneously a shaping work piece through the removal of slide, perhaps cut off in step with the being connected between the waste material of moulding plastics to different shaping work pieces, further improve the shearing convenience from this.

In the above automatic gate cutting structure for a mold, the main path includes a buffer section in an arc-shaped recess shape and located between the two branches, and the buffer section is communicated with the flow guide section. The buffer section buffers the plastic melt flowing from the main path to the branch path and then flows to the flow guide section, and the shape of the buffer section is set so that the plastic melt flows to the two flow guide sections uniformly as far as possible.

In foretell automatic runner structure of cutting of mould, the automatic runner structure of cutting of mould is still including connecting the cover half and having the guide holder of inclined hole, the guide holder has the spigot surface unanimous with the incline direction of inclined hole, the one end that the pouring runner was kept away from to the slide has the face of pasting and pasting the spigot surface, the guide post is located the inclined hole. When the movable mould removed when the cover half relatively, the slide removed along the guide post, removed the in-process and paste the face and paste and lean on the spigot surface, because of the cover half is immovable, the guide holder of connection on the cover half avoids the slide to take place the incline because of cuting at the removal in-process through the spigot surface at utmost, guarantees to cut the quality, avoids artificially carrying out the secondary to the shaping work piece and prunes, improves the shearing convenience of the waste material of moulding plastics from this.

Compared with the prior art, the utility model has the following advantages: the application movable mould can cover the structural feature that the mould removed relatively when the die sinking, set up slide and guide post, the waste material of moulding plastics of connecting on the shaping work piece is cuted with the help of the removal of slide, after cuting, stretch into the ejection hole through the ejection post, can be convenient to the waste material of moulding plastics in the pouring runner top push away for the waste material of moulding plastics conveniently deviates from the pouring runner, improve the convenience of taking out of the waste material of moulding plastics when improving the convenience of moulding plastics waste material shearing on the shaping work piece from this.

Drawings

Fig. 1 is a schematic view of the overall structure of the present mold.

FIG. 2 is a schematic view of the connection structure of the slide and the guide holder to the movable mold, showing the injection molding waste to be cut.

Fig. 3 is an exploded view of fig. 1.

Fig. 4 is a schematic view of the overall structure of the carriage.

In the figure, 1, a fixed die; 2. moving the mold; 21. pouring a runner; 22. pushing the hole; 3. a molding cavity; 4. a slide base; 41. a flow passage is communicated; 411. a main road; 4111. a buffer section; 412. a branch circuit; 4121. a flow guide section; 4122. a contraction section; 4123. a step surface; 42. perforating holes; 43. a contact surface; 5. a guide post; 6. a guide seat; 61. an inclined hole; 62. a guide surface; 7. a limiting plate; 8. and (3) injection molding waste.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in FIG. 1, the automatic gate cutting structure of the mold comprises a fixed mold 1 and a movable mold 2, and a molding cavity 3 is arranged between the fixed mold 1 and the movable mold 2.

As shown in fig. 2-4, the movable mold 2 has a sliding groove, a sliding seat 4 is disposed in the sliding groove, a limiting plate 7 is connected to the movable mold 2, and the limiting plate 7 abuts against the sliding seat 4 to slidably connect the sliding seat 4 to the movable mold 2. The inboard of cover half 1 has the guide holder 6 that has inclined hole 61 through bolted connection, wear to be equipped with the gliding guide post 5 of slide 4 when the die sinking in the inclined hole 61, guide holder 6 has the spigot surface 62 unanimous with the incline direction of inclined hole 61, the one end that the pouring runner 21 was kept away from to slide 4 has the face 43 of pasting that pastes and paste that pastes spigot surface 62, and has seted up wear to establish hole 42 on the slide 4, the guide post 5 wears to locate in the wear to establish hole 42. The guide post 5 is obliquely arranged towards the outer side of the movable mould 2 from the fixed mould 1 to the movable mould 2.

As shown in fig. 3, a pouring runner 21 is arranged on one side of the movable mold 2 facing the fixed mold 1, the pouring runner 21 is in a long strip shape, the upper surface of the sliding seat 4 is attached to the fixed mold 1, and the sliding seat 4 is located at the end part of the pouring runner 21 and is provided with a communication runner 41 for communicating the pouring runner 21 with the molding cavity 3. The slide 4 is long, the communicating flow channel 41 includes a main path 411 communicating with the pouring flow channel 21 and a branch 412 communicating with the forming cavity 3, the main path 411 extends to the end surface of the slide 4, the through hole 42 is located at the other end of the slide 4, the branch 412 extends to the side surface of the slide 4, the number of the branch 412 is two, and the openings of the two branches 412 are respectively located at two opposite sides of the slide 4. The branch 412 has a flow guiding section 4121 communicated with the forming cavity 3 and a contraction section 4122 communicated with the main path 411, the flow area of the flow guiding section 4121 is larger than that of the contraction section 4122, the contraction section 4122 is connected with the flow guiding section 4121 and forms a step surface 4123, and the flow area of the contraction section 4122 is gradually reduced from the flow guiding section 4121 to the contraction section 4122. The main path 411 includes a buffering section 4111 in an arc-shaped recess and located between the two branches 412, and the buffering section 4111 is communicated with the diversion section 4121. The outer wall of the movable mold 2 is provided with a pushing hole 22 communicated with the pouring runner 21, and the orifice of the pushing hole 22 faces the fixed mold 1.

When the mold is opened, the movable mold 2 moves relative to the fixed mold 1, the slide seat 4 moves along the guide post 5 in the moving process of the movable mold 2, and the leaning surface 43 of the sliding seat 4 leans against the guide surface 62 in the moving process, so that the sliding seat 4 is prevented from moving left and right, the limit plate 7 prevents the sliding seat 4 from moving up and down due to shearing of the injection molding waste 8 connected with the formed workpiece in the moving process, when the movable mold 2 stops moving, the injection molding waste 8 is separated from the molding workpiece, the mold is opened, the slide seat 4 cuts off the connection of the molding workpiece and the injection molding waste 8, at the moment, the injection molding waste 8 and the molding workpiece are both in positions which are easy to be reached by an operator, the ejection column is extended into the ejection hole 22, so that the injection molding waste 8 in the pouring runner 21 can be conveniently ejected, the injection molding waste 8 is conveniently separated from the pouring runner 21, therefore, the shearing convenience of the injection molding waste 8 on the formed workpiece is improved, and the taking-out convenience of the injection molding waste 8 is improved.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the terms of the fixed mold 1, the movable mold 2, the pouring runner 21, the pushing hole 22, the molding cavity 3, the sliding seat 4, the communication runner 41, the main passage 411, the buffer section 4111, the branch passage 412, the diversion section 4121, the contraction section 4122, the step surface 4123, the through hole 42, the abutting surface 43, the guide post 5, the guide seat 6, the inclined hole 61, the guide surface 62, the limit plate 7, the injection molding waste 8, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides an automatic runner structure of cutting of mould, includes cover half (1) and movable mould (2), become die cavity (3) have between cover half (1) and movable mould (2), a serial communication port, sliding connection has slide (4) on movable mould (2), make gliding guide post (5) of slide (4) when being connected with the die sinking on cover half (1), movable mould (2) have pouring runner (21) towards one side of cover half (1), the upper surface subsides of slide (4) lean on cover half (1), and set up intercommunication runner (41) that communicate pouring runner (21) and become die cavity (3).

2. A mold gate automatic cutting structure according to claim 1, wherein the slide (4) is in an elongated shape, the communicating runner (41) comprises a main path (411) communicating with the pouring runner (21) and a branch path (412) communicating with the molding cavity (3), the main path (411) extends to the end face of the slide (4), and the branch path (412) extends to the side face of the slide (4).

3. The structure of claim 2, wherein the branch (412) has a flow guiding section (4121) connected to the forming cavity (3) and a converging section (4122) connected to the main passage (411), and the flow area of the flow guiding section (4121) is larger than that of the converging section (4122).

4. The structure of claim 3, wherein the convergent section (4122) is connected to the flow guide section (4121) and forms a step surface (4123), and the flow area of the convergent section (4122) decreases from the flow guide section (4121) to the convergent section (4122).

5. The automatic sprue cutting structure of the mold according to any one of claims 1 to 4, wherein the pouring runner (21) is long, the slide (4) is located at the end of the pouring runner (21), the outer wall of the movable mold (2) is provided with an ejection hole (22) communicated with the pouring runner (21), and the opening of the ejection hole (22) faces the fixed mold (1).

6. The structure of any one of claims 2 to 4, wherein the number of the branches (412) is two, and the openings of the two branches (412) are respectively located at two opposite sides of the slide (4).

7. A mold gate automatic cutting structure according to claim 3 or 4, characterized in that the main path (411) comprises a buffer section (4111) in the shape of an arc-shaped recess and located between the two branches (412), the buffer section (4111) is communicated with the flow guiding section (4121).

8. The automatic gate cutting structure of the mold according to claim 5, characterized in that the automatic gate cutting structure of the mold further comprises a guide seat (6) connected with the fixed mold (1) and provided with an inclined hole (61), the guide seat (6) is provided with a guide surface (62) consistent with the inclination direction of the inclined hole (61), one end of the slide seat (4) far away from the pouring runner (21) is provided with an abutting surface (43) abutting against the guide surface (62), and the guide column (5) is positioned in the inclined hole (61).