CN213382783U - Oblique ejection mold stripping device - Google Patents

Abstract

The utility model relates to an ejecting demolding device to one side. The mold stripping device comprises an elastic block and an inclined top capable of moving up and down, the elastic block is arranged in the upper part of the inclined top and moves up and down along with the inclined top, the moving direction of the inclined top is an up-down inclined line direction forming an acute angle with a vertical line, the upper part of the inclined top is a part of the mold core, the outer side surface of the upper part of the inclined top forms a part of the outer surface of the mold core, the elastic block is provided with a horizontal ejector rod penetrating into the inclined top, and the outer end surface of the horizontal ejector rod is tightly attached to the inner side; when the mold is ejected, the inclined top moves upwards, the top surface of the upper part of the inclined top pushes the plastic part to upwards gradually separate from the mold core, the elastic block synchronously moves upwards, and the ejector rod gradually pushes the inner side wall of the plastic part to separate from the outer side surface of the upper part of the inclined top. The utility model discloses a demolding device can let the plastic part inside wall progressively break away from when synchronous rising when the demolding, therefore the plastic part inside wall can not appear sticking, drag quality problems such as hinder when the demolding, and the yields obtains improving, and production efficiency obtains promoting.

Description

Oblique ejection mold stripping device

Technical Field

The utility model relates to a mould equipment especially relates to an ejecting demolding device to one side.

Background

For some novel box plastic part products, some products have that the lateral wall is darker, thinner, and some still have unsmooth bone position characteristic on the inside wall, the problem that the process of moulding plastics of these products leads to sticking the mould easily, demolding drags the wound. If through subtracting gluey drawing die demolding, can cause the plastic product inboard wall glue position list thin, difficult glue of walking during the injection molding, the easy plastic part quality problem that appears. Repeated mold saving of the mold does not fundamentally solve these problems. It is necessary to develop a novel demolding structure for box plastic part can reduce the probability that the quality problem appears in the inside wall when the demolding, improves the yields.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above defect of prior art, and provide an ejecting demolding device to one side, can let box plastic part demolding more smooth, improve the yields.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an inclined ejection die device comprises an elastic block and an inclined ejector capable of moving up and down, wherein the elastic block is arranged in the upper part of the inclined ejector and moves up and down along with the inclined ejector, the moving direction of the inclined ejector is an up-down inclined line direction forming an acute angle with a vertical line, the upper part of the inclined ejector is a part of a die core, the outer side surface of the upper part of the inclined ejector forms a part of the outer surface of the die core, the elastic block is provided with a horizontal ejector rod penetrating into the inclined ejector, and the outer end surface of the horizontal ejector rod is tightly attached to the inner side wall of a plastic; when the mold is ejected, the inclined top moves upwards, the top surface of the upper part of the inclined top pushes the plastic part to upwards gradually separate from the mold core, the elastic block moves upwards synchronously, the elastic block moves horizontally relative to the inclined top, the ejector rod penetrates out of the outer side surface of the upper part of the inclined top gradually, the outer end surface of the ejector rod is kept attached to the inner side wall of the plastic part, and the outer side surface of the upper part of the inclined top gradually separates from the inner side wall of the.

When the inclined top is at an initial position, the upper part of the inclined top is arranged in a containing position of the mold core, the side wall of the containing position is a vertical side wall, and the back of the elastic block is tightly attached to the side wall of the containing position; when the mold is removed, the elastic block moves upwards synchronously and the back of the elastic block is kept close to the side wall of the accommodating position.

The direction vector of the upward movement of the inclined top is decomposed into a vertical direction vector and a horizontal direction vector, and the horizontal direction vector points to the side wall of the accommodating position.

A horizontal pressure spring is clamped between the elastic block and the upper part of the inclined top, and the horizontal pressure spring is used for applying horizontal pressure to the elastic block and keeping the back of the elastic block close to the side wall of the containing position.

The demolding device further comprises a driving piece moving up and down, the bottom end of the inclined top is connected with the driving piece, the bottom end of the inclined top moves up and down synchronously with the driving piece, and the bottom end of the inclined top can horizontally move relative to the driving piece.

The upper portion of the side wall of the containing position is provided with an avoiding inclined plane, when the pitched roof is at an initial position, the avoiding inclined plane is tightly attached to the inner side face of the upper portion of the pitched roof, and when the mold is released, the avoiding inclined plane is used for allowing the pitched roof to pass through.

The outer side surface of the upper part of the inclined top is a flat surface, or the outer side surface of the upper part of the inclined top has concave/convex characteristics.

One or more demolding devices are arranged on one corresponding mold core.

Compared with the prior art, the utility model beneficial effect be: through set up the bullet piece of an activity in pushing up to one side, when pushing up ejecting plastic part to one side, bullet piece has horizontal migration to one side relatively, the promotion of fore-set can make to one side the lateral surface must can break away from with the plastic part inside wall when the demolding, can let the plastic part inside wall progressively break away from when synchronous rising when the demolding, therefore the plastic part inside wall can not appear sticking when the demolding, quality problems such as drag injury, let box plastic part demolding can be more smooth, the yields obtains improving, production efficiency obtains promoting.

Drawings

Fig. 1 is a view of the mold clamping state of the mold stripping device of the present invention.

Fig. 2 is a view of the mold stripping status of the mold stripping apparatus of the present invention.

It should be noted that, the products shown in the above views are all appropriately reduced/enlarged according to the size of the drawing and the clear view, and the size of the products shown in the views is not limited.

Detailed Description

In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and explained with reference to the specific embodiments.

The embodiment of the utility model provides a demolding device 20. Fig. 1 and 2 schematically show the structure of the demolding device 20, and the demolding device 20 is used in cooperation with the mold core 10. In a practical implementation, one or more demolding devices 20 may be provided for one mold core 10. Fig. 1 and 2 show only one demolding device 20 corresponding to one mold core 10 for the sake of simplicity.

As shown in fig. 1, the demolding device 20 includes a movable elastic block 22 and a lifter 21 that can move up and down. The angle 21 passes through the mold core 10. When the inclined roof 21 is in the initial position, the upper part of the inclined roof 21 is placed in the receiving position 11 of the mold core 10, and the upper part 211 of the inclined roof 21 forms part of the mold core 10 and the outer side of the upper part 211 of the inclined roof 21 forms part of the outer surface of the mold core 10. In practical application, the outer side surface of the upper portion 211 of the slanted ejecting part 21 may be a flat surface, or the outer side surface of the upper portion 211 of the slanted ejecting part 21 may be provided with concave/convex features.

During demolding, the lifter 21 moves upward, and the moving direction of the lifter 21 is maintained in the direction of an up-and-down inclined line forming an acute angle with the vertical line. And the direction vector of the upward movement of the inclined top 21 is decomposed into a vertical direction vector and a horizontal direction vector, wherein the horizontal direction vector points to the side wall 12 of the accommodating position 11, namely the upward movement of the inclined top 21 is towards the side of the center of the mold core 10. In this embodiment, the upper portion of the side wall 12 of the accommodating position 11 is provided with an avoiding inclined surface 13, and the gradient direction of the avoiding inclined surface 13 is parallel to the moving direction of the pitched roof 21. When the inclined top 21 is at the initial position, the avoiding inclined surface 13 is closely attached to the inner side surface of the upper part 211 of the inclined top 21, and when the mold is released, the avoiding inclined surface 13 is used for allowing the inclined top 21 to pass through.

As shown in fig. 1, the demolding device 20 further includes a driving member 30 that moves up and down in a vertical direction. The bottom end 213 of the lifter 21 is connected to the driving member 30, and when the driving member 30 moves up and down, the bottom end 213 of the lifter 21 moves up and down synchronously with the driving member 30, and since the lifter 21 moves up and down obliquely in a fixed direction, the bottom end of the lifter 21 can horizontally translate relative to the driving member 30.

As shown in fig. 1, the upper portion 211 of the lifter 21 is provided with a horizontal receiving groove 212, and the resilient block 22 is provided in the receiving groove 212 of the upper portion 211 of the lifter 21, so that the resilient block 22 moves up and down following the lifter 21. The elastic block 22 is provided with a horizontal top rod 221 towards one side inside the accommodating groove 212, and the horizontal top rod 221 penetrates into the inclined top 21 while the outer end surface of the horizontal top rod 221 is tightly attached to the inner side wall 91 of the plastic part 90. As shown in fig. 1, the side wall 12 of the accommodating position 11 is a vertical side wall, and the back of the elastic block 22 is always closely attached to the side wall 12 of the accommodating position 11. A horizontal pressure spring 23 is clamped between the elastic block 22 and the upper part 211 of the inclined top 21, and two ends of the horizontal pressure spring 23 respectively abut against the inclined top 21 and the elastic block 22. The horizontal compression spring 23 is used for applying horizontal pressure to the elastic block 22 and keeping the back surface of the elastic block 22 in close contact with the side wall 12 of the accommodating position 11.

Fig. 1 is a state view in which an upper mold is removed after mold clamping and injection molding. In the state of fig. 1, the driving member 30 starts to move upward in the vertical direction a, and the driving lifter 21 moves upward in the tilting direction B. The angle between the direction B and the direction A is 3 degrees. At this time, the top surface of the upper part 211 of the lifter 21 pushes the plastic part 90 upwards to gradually separate from the body of the mold core 10. The slanted ejecting 21 will drive the elastic block 22 to move upward synchronously, but the horizontal compression spring 23 is compressed horizontally by the slanted ejecting 21, the horizontal compression spring 23 will push the elastic block 22 to cling to the side wall 12 of the accommodating position 11, so that the elastic block 22 is limited by the side wall 12 of the accommodating position 11 and can only move along the direction a, the elastic block 22 will move horizontally relative to the upper part of the slanted ejecting 21, and therefore the top rod 221 of the elastic block 22 gradually penetrates out of the outer side surface of the upper part 211 of the slanted ejecting 21 and the outer end surface of the top rod 221 keeps clinging to the inner side wall 91 of the plastic part 90, and the outer side surface of the upper part 211 of the slanted ejecting 21 gradually separates from the inner side wall 91 of the plastic part 90 to the. In the state shown in fig. 2, the inner sidewall 91 of the plastic part 90 is not in contact with the upper portion 211 of the lifter 21, and the outer side concave portion 214 of the upper portion 211 of the lifter 21 is completely separated from the convex rib portion 911 of the inner sidewall 91 of the plastic part 90, so that the lifter 21 does not generate mold release blockage to the plastic part 90, and the plastic part 90 can be smoothly released from the mold.

After the plastic member 90 is removed in fig. 2, the driving member 30 moves vertically downward, and the slanted top 21 is driven to move downward along the slanted direction C. The included angle between the direction C and the vertical direction is 3 degrees. The inclined top 21 can drive the elastic block 22 to move downwards synchronously, the horizontal compression spring 23 is in a compressed state all the time, the horizontal compression spring 23 can push the elastic block 22 to cling to the side wall 12 of the accommodating position 11, the elastic block 22 is limited by the side wall 12 of the accommodating position 11 and can only move vertically and downwards synchronously, the elastic block 22 can move horizontally and reversely relative to the inclined top 21, and therefore the ejector rod 221 of the elastic block 22 gradually retracts into the upper portion 211 of the inclined top 21. The driving member 30 of fig. 2 is moved vertically downward until the state of fig. 1 is restored, and the next injection molding step is started.

The utility model discloses a set up the bullet piece of an activity in pushing up to one side, when pushing up ejecting plastic part in pushing up to one side, bullet piece pushes up horizontal migration to one side relatively, the promotion of fore-set can make and push up the lateral surface to one side must can break away from with the plastic part inside wall when the demolding, can let the plastic part inside wall progressively break away from when ascending in step when the demolding, therefore the sticking mold can not appear when the demolding in the plastic part inside wall, quality problems such as drag wound, let box plastic part demolding can be more smooth, the yields obtains improving, production efficiency obtains promoting.

The above description is only for the purpose of illustrating the technical content of the present invention by way of example, so as to facilitate the understanding of the reader, but does not represent that the embodiments of the present invention are limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention.

Claims (8)

1. An inclined ejection die-stripping device is characterized by comprising an elastic block and an inclined ejector capable of moving up and down, wherein the elastic block is arranged in the upper part of the inclined ejector and moves up and down along with the inclined ejector;

when the mold is ejected, the inclined top moves upwards, the top surface of the upper part of the inclined top pushes the plastic part to be separated from the mold core gradually upwards, the elastic block moves upwards synchronously, the elastic block moves horizontally relative to the inclined top, the ejector rod penetrates through the outer side surface of the upper part of the inclined top gradually, the outer end surface of the ejector rod is kept attached to the inner side wall of the plastic part, and the outer side surface of the upper part of the inclined top is separated from the inner side wall of the plastic part gradually.

2. The angle ejector die assembly according to claim 1, wherein when the angle ejector is in the initial position, the upper part of the angle ejector is placed in a containing position of the die core, the side wall of the containing position is a vertical side wall, and the back surface of the elastic block is tightly attached to the side wall of the containing position; when the mold is ejected, the elastic block synchronously moves upwards and the back surface of the elastic block is kept close to the side wall of the accommodating position.

3. The apparatus according to claim 2, wherein the direction vector of the upward movement of the lifter is divided into a vertical direction vector and a horizontal direction vector, and the horizontal direction vector is directed to the sidewall of the receiving position.

4. The angle ejector die set according to claim 2, wherein a horizontal compression spring is interposed between the elastic block and the upper portion of the angle ejector, and the horizontal compression spring is used for applying horizontal pressure to the elastic block and keeping the back surface of the elastic block in close contact with the side wall of the accommodating position.

5. The angle ejector apparatus as claimed in claim 1, further comprising a driving member moving up and down, wherein a bottom end of the angle ejector is connected to the driving member, the bottom end of the angle ejector moves up and down in synchronization with the driving member, and the bottom end of the angle ejector is horizontally translatable relative to the driving member.

6. The angle ejector apparatus of claim 2, wherein an upper portion of the side wall of the receiving portion is provided with an escape slope which abuts against an inner side surface of an upper portion of the angle ejector when the angle ejector is in the initial position, and which is adapted to allow the angle ejector to pass therethrough when ejecting the mold.

7. The apparatus of claim 1, wherein the outer side of the upper portion of the lifter is a flat surface or the outer side of the upper portion of the lifter has concave/convex features.

8. The apparatus according to claim 1, wherein one or more of said mold stripping means are provided on a corresponding one of the mold cores.

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