CN210651713U

CN210651713U - Prevent that thimble from pushing up mould structure of hitting slider

Info

Publication number: CN210651713U
Application number: CN201921199655.0U
Authority: CN
Inventors: 胡海宏
Original assignee: Dongguan Jinghong Plastic Mould Co ltd
Current assignee: Dongguan Jinghong Plastic Mould Co ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-06-02
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses a mould structure for preventing a thimble from knocking against a sliding block, which comprises a front template, a rear template and a thimble bottom plate, wherein the front template is provided with an inclined guide post; a sliding block is arranged between the front template and the rear template, a sliding block insert is fixedly connected on the sliding block, and a convex part is arranged on the sliding block insert; the sliding block can slide under the action of the inclined guide post, so that the protruding part is driven to be inserted into or withdrawn from the product cavity. The rear template is provided with a stroke baffle; the thimble bottom plate is provided with a firing prevention pin and a thimble; the slide block is provided with an ejection hole, and when the slide block touches the stroke baffle, the anti-collision needle can be inserted into the ejection hole. The utility model discloses novel structure, whether insert through firing pin and ejection hole whether control the ejecting action of thimble, the thimble is ejecting by force and damage the mould under the condition that the slider did not withdraw from completely when having avoided the die sinking, and the slider resets and damages the thimble under the condition that the thimble did not reset completely when also having avoided the compound die to the life of mould has been prolonged.

Description

Prevent that thimble from pushing up mould structure of hitting slider

Technical Field

The utility model relates to the technical field of mold, concretely relates to prevent that thimble top from hitting mould structure of slider.

Background

An injection mold is a tool for producing plastic products, and particularly relates to a molded product obtained by injecting heated and molten plastic into a mold cavity from an injection molding machine at high pressure and cooling and solidifying the plastic. An ejection mechanism is generally arranged in the injection mold, and can eject the injection molded product out of the mold, so that the product is not damaged integrally.

The existing product has a complex structure, and a plurality of products are provided with the back-off in the direction of the fixed die, so that the sliding block needs to be withdrawn first, and then the demoulding can be carried out. When the ejector pins and the slide blocks on the die are more, the slide blocks are easily not completely withdrawn or reset earlier than the ejector pins, and the ejector pins are ejected out to collide with the slide blocks, so that the slide blocks are damaged, the service life of the die is shortened, and the die cost is improved.

Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a mold structure for preventing the thimble from colliding with the slider.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a prevent that thimble top from hitting the mould structure of slider.

The utility model discloses a solve the technical scheme that its problem adopted and be:

the utility model provides a prevent that thimble top from hitting mould structure of slider, includes preceding template, back template and the thimble bottom plate that sets up from the top down in proper order, wherein:

the front template is fixedly connected with a shovel base, and the shovel base is fixedly connected with an inclined guide post;

a sliding block is further arranged between the front template and the rear template, a sliding block insert is fixedly connected onto the sliding block, and a protruding part used for forming a product back-off structure is arranged on the sliding block insert;

the slide block is provided with an inclined hole through which the inclined guide post can pass;

when the inclined guide post penetrates through the inclined hole and moves up and down along the vertical direction, the slide block can be driven to move left and right along the horizontal direction, and the protruding part is further driven to be inserted into or withdrawn from the product cavity;

the rear template is connected with a stroke baffle plate for limiting the movement of the sliding block;

the thimble bottom plate is provided with an anti-firing pin and a plurality of thimbles for ejecting products;

the slider is provided with an ejection hole, and when the slider touches the stroke baffle, the anti-collision needle can be inserted into the ejection hole.

The utility model provides a pair of prevent that thimble top from hitting mould structure of slider, when relative back template die sinking and upward movement of front bezel, the oblique guide pillar on the front bezel is also along with upward movement together, drives the slider simultaneously and moves right along the horizontal direction, and then drives the bellying on the slider mold insert and withdraw from the product die cavity, stops after touchhing the stroke baffle to the slider, and the slider is in the state of withdrawing from completely this moment. And then, the ejector pin base plate acts, the anti-collision pin is inserted into the ejection hole, and then the ejector pin on the ejector pin base plate ejects the injection-molded product out of the mold. Therefore, if the slide block is not in a complete withdrawing state, the thimble base plate acts at the moment, the anti-collision needle of the thimble base plate can be abutted against the slide block, and the thimble on the thimble base plate cannot continue to act. Similarly, if the anti-collision needle is not completely withdrawn from the ejection hole, the sliding block cannot be reset. The utility model discloses novel structure, whether insert through firing pin and ejection hole whether control the ejecting action of thimble, the thimble is ejecting by force and damage the mould under the condition that the slider did not withdraw from completely when having avoided the die sinking, and the slider resets and damages the thimble under the condition that the thimble did not reset completely when also having avoided the compound die simultaneously to the life of mould has been prolonged.

Further, the ejection hole is a through hole.

Further, the distance between the top of the anti-collision pin and the bottom of the sliding block is 0.3-0.6 mm.

Further, the diameter of the anti-collision pin is 8 mm.

The buffer mechanism comprises a straight rod and an elastic piece, the straight rod penetrates through the stroke baffle and then is fixedly connected with the sliding block, and the elastic piece is arranged between the stroke baffle and the straight rod.

From this, through setting up buffer gear, the impact force that produces when can reducing the slider and bumping with the stroke baffle when withdrawing from avoids the slider to receive the damage to the life of mould has been prolonged.

Further, the elastic member is a spring.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a pair of prevent that thimble top from hitting mould structure of slider whether insert through firing pin and ejection hole whether control the ejecting action of thimble, the thimble is ejecting and damage the mould by force under the condition that the slider did not withdraw from completely when having avoided the die sinking, and the slider resets and damages the thimble under the condition that the thimble did not reset completely when also having avoided the compound die simultaneously to the life of mould has been prolonged.

Drawings

Fig. 1 is a schematic structural view of the mold structure of the present invention, in which the front mold plate and the rear mold plate are in a mold closing state;

fig. 2 is the utility model discloses the structure sketch map of the mould structure middle and front template and back template in the die sinking state.

Wherein the reference numerals have the following meanings:

1. a front template; 11. a front mold core; 2. a rear template; 21. a rear mold core; 3. a thimble base plate; 31. a striker prevention; 4. a shovel base; 5. an inclined guide post; 6. a slider; 61. an inclined hole; 62. an ejection aperture; 7. a slide block insert; 71. a boss portion; 8. a stroke baffle; 9. a buffer mechanism; 91. a straight rod; 92. an elastic member.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1-2, the utility model provides a prevent that thimble top from hitting mould structure of slider, including front template 1, back template 2 and thimble bottom plate 3 that set up from the top down in proper order, be equipped with front mould benevolence 11 on this front template 1, be equipped with back mould benevolence 21 on this back template 2, when front template 1 and back template 2 compound dies, product die cavity is constituteed to this front mould benevolence 11 and back mould benevolence 21. Fixedly connected with shovel base 4 on this front formwork 1, be equipped with oblique guide pillar 5 on this shovel base 4, in this embodiment, this oblique guide pillar 5 passes through fasteners such as bolt or screw fixed mounting on shovel base 4. A slide block 6 is further disposed between the front mold plate 1 and the rear mold plate 2, a slide block insert 7 is disposed on the slide block 6, and in this embodiment, the slide block insert 7 is fixedly mounted on the slide block 6 through a fastener such as a bolt or a screw. The slide insert 7 is provided with a boss 71 for forming a product undercut structure. In addition, the slide block 6 is further provided with an inclined hole 61 through which the inclined guide post 5 can pass, and in this embodiment, the inclined hole 61 is just matched with the inclined guide post 5. When the inclined guide post 5 passes through the inclined hole 61 and moves up and down along the vertical direction, the slide block 6 can be driven to move left and right along the horizontal direction, and the bulge part 71 on the slide block insert 7 is driven to insert into or withdraw from the product cavity. In addition, the rear template 2 is further provided with a stroke baffle 8 for limiting the movement of the slide block 6, and in the embodiment, the stroke baffle 8 is in an L shape. In addition, the thimble base plate 3 is provided with a striker 31 and a plurality of thimbles (not shown) for ejecting products, and in the present embodiment, the diameter of the striker 31 is 8 mm. And the distance between the top of the bump pin 31 and the bottom of the slider 6 is smaller than the distance between the top of the thimble and the bottom of the product, in this embodiment, the distance between the top of the bump pin 31 and the bottom of the slider 6 is 0.5 mm.

In addition, the slider 6 is provided with an ejection hole 62, and in the present embodiment, the ejection hole 62 is a through hole. When the slide 6 hits the stroke blocking plate 8, the striker 31 can be inserted into or withdrawn from the ejection hole 62 by the action of the ejector base plate 3.

When 2 die sinking and upward movement of relative back templates of front mould board 1, shovel base 4 on the front mould board 1 drives oblique guide pillar 5 and also follow upward movement together, inserts inclined hole 61 back when oblique guide pillar 5, will drive slider 6 and remove along the horizontal direction right, and then drives bellying 71 on the slider mold insert 7 and withdraw from the product die cavity, stops after touchhing stroke baffle 8 until slider 6, and slider 6 is in the state of withdrawing from completely this moment. Next, the ejector base plate 3 is operated, the striker 31 is inserted into the ejection hole 62 under the action of the ejector base plate 3, and then the ejector pins on the ejector base plate 3 eject the injection-molded product out of the mold. As can be seen, if the thimble seat 3 is operated when the slider 6 is not completely retracted, the striker 31 abuts against the slider 6, and the thimble on the thimble seat 3 cannot move upward. Similarly, if the striker 31 is not completely withdrawn from the ejection hole 62, the slider 6 cannot be returned.

Therefore, the utility model discloses a whether mould structure is through preventing inserting of striker 31 and ejection hole 62 and is controlled the ejecting action of thimble, the thimble is ejecting and damage the mould by force under the condition that slider 6 does not withdraw from completely when having avoided the die sinking, slider 6 resets and damages the thimble under the condition that the thimble does not reset completely when also having avoided the compound die simultaneously to the life of mould has been prolonged, has improved the machining efficiency of product.

In addition, the mold structure further includes a buffer mechanism 9, the buffer mechanism 9 includes a straight rod 91 and an elastic member 92, the straight rod 91 is fixedly connected to the slider 6 after passing through the stroke baffle 8, the elastic member 92 is disposed between the stroke baffle 8 and the straight rod 91, and in this embodiment, the elastic member 92 is a spring. Therefore, by arranging the buffer mechanism 9, the impact force generated when the sliding block 6 is collided with the stroke baffle 8 when retreating can be reduced, the sliding block 6 is prevented from being damaged, and the service life of the die is prolonged. Of course, the damping mechanism 9 may be a gas damper, such as a cylinder piston, without limitation, without departing from the scope of the present invention.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. The utility model provides a prevent that thimble top from hitting mould structure of slider, its characterized in that includes preceding template (1), back template (2) and thimble bottom plate (3) that set up from the top down in proper order, wherein:

a shovel base (4) is fixedly connected to the front template (1), and an inclined guide post (5) is fixedly connected to the shovel base (4);

a sliding block (6) is further arranged between the front template (1) and the rear template (2), a sliding block insert (7) is fixedly connected onto the sliding block (6), and a bulge (71) for forming a product inverted structure is arranged on the sliding block insert (7);

the slide block (6) is provided with an inclined hole (61) through which the inclined guide post (5) can pass;

when the inclined guide post (5) penetrates through the inclined hole (61) and moves up and down along the vertical direction, the slide block (6) can be driven to move left and right along the horizontal direction, and the bulge part (71) is further driven to be inserted into or withdrawn from a product cavity;

the rear template (2) is connected with a stroke baffle (8) for limiting the movement of the sliding block (6);

the thimble bottom plate (3) is provided with an anti-firing pin (31) and a plurality of thimbles for ejecting products;

the sliding block (6) is provided with an ejection hole (62), and when the sliding block (6) touches the stroke baffle (8), the anti-collision pin (31) can be inserted into the ejection hole (62).

2. The mold structure according to claim 1, characterized in that the ejection hole (62) is a through hole.

3. The mold structure according to claim 2, wherein the distance between the top of the striker (31) and the bottom of the slide (6) is 0.3 to 0.6 mm.

4. Mould structure according to claim 3, characterized in that the diameter of the striker (31) is 8 mm.

5. The mold structure according to any one of claims 1 to 4, further comprising a buffer mechanism (9), wherein the buffer mechanism (9) comprises a straight rod (91) and an elastic member (92), the straight rod (91) is fixedly connected with the sliding block (6) after passing through the stroke baffle (8), and the elastic member (92) is arranged between the stroke baffle (8) and the straight rod (91).

6. The mold structure according to claim 5, characterized in that the elastic member (92) is a spring.