CN217319152U

CN217319152U - Bidirectional side core-pulling structure and injection mold

Info

Publication number: CN217319152U
Application number: CN202220792238.2U
Authority: CN
Inventors: 石海卫
Original assignee: Caimei Weiye Precision Electronic Kunshan Co ltd
Current assignee: Caimei Weiye Precision Electronic Kunshan Co ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2022-08-30
Anticipated expiration: 2032-04-07

Abstract

The utility model discloses a two-way side core pulling structure and injection mold belongs to mould technical field, and this structure includes the slider and is used for driving the slider to carry out the shovel base and the oblique guide pillar of corresponding motion, and the both sides that the slider corresponds die cavity one end are provided with oblique guide block respectively, and every outside of oblique guide block all has the side core through direction inclined plane sliding connection, and every side core bottom all is provided with the lug along its width direction, be provided with on the mold core with the spout of lug looks adaptation, the direction of motion of oblique guide block and the motion mutually perpendicular of side core, the utility model discloses a once side the motion of loosing core, can realize that the back-off structure of two different directions on the product carries out the drawing of patterns simultaneously, not only improve drawing of patterns efficiency, still reduced equipment manufacturing cost.

Description

Bidirectional side core-pulling structure and injection mold

Technical Field

The utility model belongs to the technical field of the mould structure, especially, relate to a two-way side structure of loosing core and injection mold.

Background

Plastic parts are mostly injection molded by an injection mold. When the plastic part has a plurality of inverted structures and the orientations of the inverted structures are inconsistent, great difficulty and inconvenience exist in the demolding and blanking process after molding, the plastic part can interfere with parts of the mold in the demolding process by adopting the mold with the conventional structure, and the lossless demolding and blanking can not be realized, for example, in a product shown in fig. 1, the direction of the inverted structure I C is opposite to the direction of the inverted structure II D, the opening direction of the inverted structure I C is A, and the opening direction of the inverted structure II D is B. If directly take out slider whole according to usual, often can produce pulling deformation and damage to the product, the effect is poor, and the inner chamber of product is darker, drops after making the product shaping, adopts the ejector pin to release the product usually, however, when adopting the ejector pin ejecting, the ejector pin needs to have longer stroke, and this has just led to the drawing of patterns time long, influences production efficiency, for solving above-mentioned technical problem, provides a two-way side structure of loosing core and injection mold.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a two-way side structure of loosing core and injection mold, through the motion of loosing core once, can realize that the back-off structure that two directions are different on the product carries out the drawing of patterns simultaneously, not only improve drawing of patterns efficiency, still reduced equipment manufacturing cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a two-way side structure of loosing core, includes the slider and is used for driving the slider to carry out corresponding movement's shovel base and oblique guide pillar, the both sides that the slider corresponds die cavity one end are provided with oblique guide block respectively, every the outside of oblique guide block all has the side core, every through direction inclined plane sliding connection side core bottom all is provided with the lug along its width direction, be provided with on the mold core with the spout of lug looks adaptation, the direction of motion of guide block to one side with the motion mutually perpendicular of side core.

In order to achieve the above object, the present invention adopts another technical solution: the utility model provides an injection mold, includes cover half and movable mould, the cover half with be formed with the die cavity between the movable mould, be provided with the hot runner system on the movable mould, set up ejecting structure on the cover half, ejecting structure goes including setting up the thimble in the cover half bottom and setting up the gas cap structure at the cover half lateral part, install foretell two-way side structure of loosing core between cover half and the movable mould.

Compared with the prior art, the utility model discloses realize following beneficial effect:

1. the utility model carries out the primary side core-pulling movement, can realize the simultaneous demoulding of two inverted buckle structures, not only improves the demoulding efficiency, but also reduces the production cost of the equipment;

2. the inclined guide block is driven to be close to or far away from a product through the matching of the inclined guide post, the shovel base and the sliding block, the inclined guide block is connected with the side core in a sliding mode through the guide inclined plane, and the protruding block is arranged at the bottom of the side core, so that the moving direction of the inclined guide block is perpendicular to the movement of the side core, the product damage caused by integral pulling is avoided, and the production efficiency is improved;

3. through setting up the gas cap structure, not only supplementary thimble makes the product drawing of patterns, prevents that the product is out of shape when ejecting, can also accelerate the product cooling, shortens the shaping cycle.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic diagram of a product structure;

FIG. 2 is a schematic cross-sectional view of a movable mold of an injection mold;

FIG. 3 is a schematic sectional view of a stationary mold of the injection mold;

FIG. 4 is a schematic cross-sectional view of the side core-pulling structure in a mold-closed state;

FIG. 5 is a schematic cross-sectional view of the side core-pulling structure in the mold-opened state;

fig. 6 is an enlarged schematic view of part C.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples

Referring to fig. 1-6, an injection mold comprises a movable mold 10 and a fixed mold 20, a cavity is formed between the fixed mold 20 and the movable mold 10, a hot runner system 40 is arranged on the movable mold 10, an ejection system is arranged on the fixed mold, the ejection system comprises an ejector pin 50 arranged on a push plate 22 at the bottom of the fixed mold and used for ejecting a product and an air-lift structure arranged at the side part of the fixed mold, a bidirectional side core pulling structure 30 is arranged between the fixed mold 20 and the movable mold 10, the bidirectional side core pulling structure comprises a slide block 31, and a shovel base and an inclined guide post 11 used for driving the slide block to correspondingly move, the two sides of one end, corresponding to the cavity, of the sliding block 31 are respectively provided with an inclined guide block 32, the outer side of each inclined guide block 32 is connected with a side mold core 33 in a sliding mode through a guide inclined plane, the bottom of each side mold core 33 is provided with a convex block 331 along the width direction of the side mold core, a sliding groove matched with the convex block is formed in the mold core, and the moving direction of the inclined guide blocks 32 is perpendicular to the moving direction of the side mold cores 33.

In this embodiment, each of the inclined guide blocks 32 is provided with a T-shaped groove on the outer side thereof, and a connecting portion adapted to the T-shaped groove is provided on the side core. The design can realize the sliding connection between the side core and the inclined guide block.

In this embodiment, the bottom surface of the sliding block 31 and the surface contacting with the shovel base 11 are both provided with wear-resistant blocks 34, which is beneficial to prolonging the service life of the device.

In this embodiment, the gas cap structure includes the through-hole 62 of blowing that sets up in the middle part of mold core 21, and the lower port of the through-hole 62 of blowing links to each other with the air feed source through inlet line 61, and the upper end of the through-hole 63 of blowing is provided with gas ejecting block 63, and the air feed reaches behind the through-hole 62 of blowing through-hole through inlet line 61, and is ejecting with the product through gaseous, not only supplementary thimble makes the product drawing of patterns, prevents that the product is out of shape when ejecting, can also accelerate the product cooling, shortens the shaping cycle.

In this embodiment, a sealing ring (not marked in the drawings) is disposed between the bottom surface of the mold core 21 and the top surface of the movable mold plate at the outer side of the lower port of the air blowing through hole 62 to prevent air leakage during air blowing.

In this embodiment, hot runner system 40 includes hot runner 41, the bottom of hot runner is provided with needle valve 42, needle valve 42 bottom is provided with the heat that communicates with the die cavity and chews 421, makes the product shaping more stable through adopting the hot runner, is favorable to saving raw and other materials, shortens the shaping cycle, chews through setting up the heat in the needle valve bottom, can the accurate control volume of advancing glue, and the lateral part of hot runner still is provided with the needle valve blowing mouth 43 of supplementary needle valve 42 motion.

The utility model discloses the theory of operation: when the mold is closed, the shovel base 11 and the inclined guide post approach the slide block 31 along with the movable mold 10, the slide block 31 drives the inclined guide blocks 32 at two sides to approach the product, and under the action of the guide inclined planes, the two side mold cores 33 simultaneously spread outwards to approach the product, so as to form a back-off structure at the side part of the product; when the mold is opened, the shovel base 11 is far away from the sliding block 31 along with the movable mold 10, the sliding block 31 drives the inclined guide blocks 32 on two sides to be far away from a product, under the dual action of the guide inclined plane and the protruding block, the inclined guide blocks 32 drive the two side mold cores 33 to gather together towards the middle to be far away from the product, the moving direction of the inclined guide blocks 32 is perpendicular to the moving direction of the side mold cores 33, and after core pulling, the product is demolded under the bolt punching action of the ejector pins 50 and the gas top structure.

The utility model carries out the primary side core-pulling movement, can realize the simultaneous demoulding of two inverted buckle structures, not only improves the demoulding efficiency, but also reduces the production cost of the equipment; the inclined guide block 32 is driven to be close to or far away from a product through the matching of the inclined guide post, the shovel base 11 and the sliding block 31, the inclined guide block 32 is connected with the side core 33 in a sliding mode through the guide inclined plane, and the bottom of the side core 33 is provided with the convex block 331, so that the movement direction of the inclined guide block 32 is perpendicular to the movement direction of the side core 33, the product damage caused by integral pulling is avoided, and the production efficiency is improved; through setting up the gas cap structure, not only supplementary thimble makes the product drawing of patterns, prevents that the product is out of shape when ejecting, can also accelerate the product cooling, shortens the shaping cycle.

The above embodiments are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which should not limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a two-way side structure of loosing core, its characterized in that includes the slider and is used for driving the slider to carry out the shovel base and the guide pillar to one side of corresponding motion, the both sides that the slider corresponds die cavity one end are provided with oblique guide block respectively, every the outside of oblique guide block all has the side core, every through direction inclined plane sliding connection side core bottom all is provided with the lug along its width direction, be provided with on the mold core with the spout of lug looks adaptation, the direction of motion of guide block to one side with the motion mutually perpendicular of side core.

2. The bidirectional side core pulling structure according to claim 1, wherein a T-shaped groove is formed in an outer side of each inclined guide block, and a connecting portion matched with the T-shaped groove is formed in the side core.

3. The bidirectional side core pulling structure according to claim 1, wherein the bottom surface of the sliding block and the surface of the sliding block, which is in contact with the shovel base, are provided with wear-resistant blocks.

4. An injection mold comprises a fixed mold and a movable mold, wherein a cavity is formed between the fixed mold and the movable mold, and the injection mold is characterized in that a hot runner system is arranged on the movable mold, an ejection system is arranged on the fixed mold and comprises ejector pins arranged on a push plate at the bottom of the fixed mold and used for ejecting a product and an air-lift structure arranged at the side part of the fixed mold, and the bidirectional side core pulling structure according to any one of claims 1 to 3 is arranged between the fixed mold and the movable mold.

5. An injection mold according to claim 4, characterized in that the gas cap structure comprises a gas blowing through hole arranged in the middle of the mold core, the lower port of the gas blowing through hole is connected with a gas supply source through a gas inlet pipeline, and the upper end of the gas blowing through hole is provided with a gas cap block.

6. An injection mold according to claim 4, wherein a sealing ring is provided between the bottom surface of the mold core and the top surface of the movable mold plate outside the lower port of the blow through hole.

7. An injection mould according to claim 4, wherein the hot runner system comprises a hot runner, a needle valve is arranged at the bottom of the hot runner, and a hot nozzle communicated with the cavity is arranged at the bottom of the needle valve.

8. An injection mould according to claim 7, wherein the hot runner side is provided with a needle valve blow nozzle.