CN219028347U - Anti-collision mechanism in ejection die - Google Patents

Abstract

The utility model discloses an anti-collision mechanism in an ejection die, which comprises a front die, a rear die and an ejection structure, wherein the front die and the rear die can be buckled and injection molded relatively, a plurality of slide block cavities are arranged on the rear die, a slide block is slidably arranged in each slide block cavity, and a first positioning hole penetrating through the rear die is formed in the bottom surface of each slide block cavity; the sliding block is provided with a second positioning hole corresponding to the first positioning hole. The ejection structure is arranged on one side facing away from the side of the rear mold injection molding product and comprises an ejector plate and a plurality of ejector pins arranged on the ejector plate, and the top ends of the ejector pins can penetrate through the rear mold to eject the injection molding product; the anti-collision rod corresponding to the arrangement position of the first positioning hole is arranged on the ejector plate, and can pass through the first positioning hole and the second positioning hole from bottom to top. The ejector pin is simple in structure, the ejector pin is prevented from being broken when the front die and the rear die are abnormally clamped, the ejector pin is prevented from being broken when the top sliding block falls down, and the problem that the ejector pin collides with the front die when the ejector pin plate is not reset to the bottom is effectively avoided.

Description

Anti-collision mechanism in ejection die

Technical Field

The utility model relates to the technical field of injection molds, in particular to an anti-collision mechanism in an ejection mold.

Background

With the rapid development of the plastic industry, various tools and products used in daily production and life, such as ships, automobiles, screws, buttons and shells of various household appliances, are not closely related to plastic products. The injection mold is important technological equipment for producing various plastic industrial products, and is also a tool for endowing plastic products with complete structures and precise dimensions; the injection mold mainly comprises a pouring system, a temperature regulating system, a molding part and a structural part, and can be used for processing a series of plastic products with different shapes and different sizes. The slide block is an indispensable component in the core-pulling type injection mold, is very important for mold closing injection molding and mold opening product ejection of the mold, and normally slides out and is far away from a rear mold product surface when the mold is opened, and slides into and abuts against the mold product surface when the mold is closed. However, in the mold opening process, when the existing slide block limiting function fails, the sliding block on the day easily falls off; or the oil cylinder slide block does not withdraw to the appointed position, and the slide block and the thimble are damaged in the process of ejecting the product by the ejection structure; and when the ejector pin in the ejection structure is reset to be closed, the ejector pin still can perform the closing action under the condition that the ejector pin is not reset to be closed, the top end of the ejector pin can directly collide with the front die, the ejector pin of a product is damaged firstly, the die is damaged secondly, the die is required to be welded when being light, and the die is directly scrapped when being heavy.

Disclosure of Invention

The utility model aims to solve the defects of the prior art and provides an anti-collision mechanism in an ejection die.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an anticollision mechanism in ejecting mould, includes front mould, rear mould and ejecting structure, and front mould and rear mould can be relative lock to carry out the injection moulding, and wherein the injection moulding product side of rear mould is equipped with a plurality of slider chamber, and slidable mounting has the slider that is used for injection moulding in every slider chamber, and the bottom surface in every slider chamber all is equipped with at least one and runs through the first locating hole of rear mould.

The sliding block is provided with an inclined guide post hole, an inclined guide post is arranged in the sliding block to drive the rear die to slide, and the upper end of the inclined guide post is fixedly arranged on the front die; and each sliding block is also provided with a second positioning hole corresponding to the first positioning hole.

The ejection structure is arranged on one side facing away from the side of the injection product of the rear mould and comprises an ejector plate and a plurality of ejector pins arranged on the ejector plate, wherein the top ends of the ejector pins can penetrate through the rear mould and are positioned in the injection product area to eject the injection product; the ejector plate is provided with an anti-collision rod corresponding to the arrangement position of the first positioning hole, and the anti-collision rod can penetrate through the first positioning hole and the second positioning hole.

Further, the thimble plate comprises a thimble panel and a thimble bottom plate; the anti-collision rod is vertically fixed on the ejector plate, and the lower end of the anti-collision rod is in an outward protruding truncated cone shape; the anti-collision rod passes through the thimble panel from bottom to top, and the lower end of the anti-collision rod is clamped and fixed in the corresponding groove; the ejector pin bottom plate is fixedly arranged on the bottom surface of the ejector pin panel, and the bottom surface of the lower end of the anti-collision rod abuts against the top surface of the ejector pin bottom plate.

Further, a sliding block pressing bar for sliding a sliding block is arranged in the sliding block cavity, and a sliding groove is formed between the sliding block pressing bar and the bottom surface of the sliding cavity; and a stop limiting block is fixedly arranged at the outer side edge of the sliding block cavity.

Further, the second positioning hole and the first positioning hole are positioned on the same straight line, and the sizes of the second positioning hole and the first positioning hole are equal; after the die is opened, when the sliding block completely withdraws to a designated position, the second positioning hole and the first positioning hole are overlapped up and down, and the anti-collision rod can sequentially pass through the first positioning hole and the second positioning hole from bottom to top.

Further, the ejector plate is also provided with a rear die limiting column.

Compared with the prior art, the utility model has the following beneficial effects: the ejector pin is simple in structure, safe and reliable in ejection process of injection products can be ensured, the situations that the ejector pins are broken and the front and rear mold cavities are damaged by ejection when the front mold and the rear mold are abnormally assembled can be effectively prevented, and the problem that the ejector pins are bumped by the sliding blocks caused by the assembly when the ejector pin plate is not reset to the bottom can be effectively avoided.

Drawings

FIG. 1 is a schematic view of a rear mold and an ejector structure according to the present utility model;

FIG. 2 is a schematic diagram illustrating the cooperation between the ejector structure and the slider according to the present utility model;

FIG. 3 is a schematic view of the structure of the cavity of the upper slider of the rear mold according to the present utility model;

FIG. 4 is a top view of a slider of the present utility model;

FIG. 5 is a longitudinal cross-sectional view of the bumper beam attachment location of the present utility model;

in the figure: 1. rear mould, 2, ejection structure, 3, slider, 4, the crash bar, 5, slider chamber, 6, first locating hole, 7, second locating hole, 8, oblique guide pillar hole, 9, rear mould spacing post, 10, slider layering, 21, thimble bottom plate, 22, thimble panel, 23, recess, 24, thimble.

Detailed Description

It should be noted that, in the description of the present utility model, the terms such as "upper", "lower", "front", "rear", "top", "bottom", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, but relational terms are merely determined for convenience in describing the structural relationships of the components of the present utility model, and do not particularly denote that any one of the components of the present utility model must have a specific orientation, be configured and operated in a specific orientation, and should not be construed as limiting the present utility model.

In addition, the descriptions such as "first," "second," and the like are used for descriptive purposes only and are not intended to specifically identify the order or sequence of features or to limit the utility model, but are merely for distinguishing between components or operations described in the same technical term and are not to be construed as indicating or implying any particular importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

It should also be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and include, for example, either fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings:

as shown in fig. 1 and 2, an anti-collision mechanism in an ejection die comprises a front die, a rear die 1 and an ejection structure 2, wherein the front die and the rear die 1 can be buckled relatively to carry out injection molding of products. Four slide block cavities 5 are arranged on the injection molding product side of the rear mold 1, are symmetrically arranged on two sides of the upper surface of the rear mold 1, and referring to fig. 3, oil filling grooves are formed in the bottom of each slide block cavity 5 and used for filling oil to reduce friction; the two sides above the bottom surface of the sliding block cavity 5 are symmetrically provided with sliding block pressing strips 10 which extend outwards, are respectively fixed through countersunk bolts, and form sliding grooves with the bottom surface of the sliding block cavity; the bottom surface of the slide block cavity 5 is also provided with a first positioning hole 6 penetrating through the upper part and the lower part of the rear die 1. Each slide block cavity 5 is internally provided with a slide block 3 for injection molding in a sliding manner and can slide back and forth along the slide groove. Referring to fig. 4, the slide block 3 is provided with an inclined guide pillar hole 8, an inclined guide pillar is arranged in the slide block to drive the rear mold 1 to slide, and the upper end of the inclined guide pillar is fixedly arranged on the front mold; each sliding block 3 is also provided with a second positioning hole 7 corresponding to the first positioning hole 6, the second positioning holes 7 and the first positioning holes 6 are positioned on the same straight line, and the sizes and the specifications are equal; when the slider 3 is completely withdrawn to the designated position after the mold is opened, the second positioning hole 7 is overlapped up and down with the first positioning hole 6. Meanwhile, in order to ensure the sliding of the sliding block 3 in the sliding block cavity 5, a stop limiting block corresponding to the sliding block cavity 5 is fixedly arranged on the outer side of the outer edge of the sliding block cavity 3, and the sliding block 3 is limited.

The ejection structure 2 is arranged on one side of the injection product side of the back mold, and comprises an ejector plate and a plurality of ejector pins 24 arranged on the ejector plate, wherein the top ends of the ejector pins 24 can penetrate through the back mold 1 and are positioned in the injection product area to eject the injection product. Four anti-collision rods 4 corresponding to the arrangement positions of the first positioning holes 6 are further arranged on the ejector plate, and the top ends of the anti-collision rods 4 can sequentially pass through the first positioning holes 6 and the second positioning holes 7 from bottom to top.

With further optimized technical scheme, referring to fig. 5, the ejector plate includes an ejector bottom plate 21 and an ejector panel 22; the anti-collision rod 4 is vertically fixed on the ejector plate, and the lower end of the anti-collision rod 4 is in an outward protruding truncated cone-shaped structure; the bottom surface of the thimble panel 22 is provided with a groove 23 matched with the lower end of the anti-collision rod 4 corresponding to the installation position of the anti-collision rod 4, the anti-collision rod 4 passes through the thimble panel 22 from bottom to top, and the lower end of the thimble panel is clamped and fixed in the corresponding groove 23; the thimble bottom plate 21 is fixedly arranged on the bottom surface of the thimble panel 22 through bolts, and the bottom surface of the lower end of the anti-collision rod 4 abuts against the top surface of the thimble bottom plate 21.

As shown in fig. 2, the ejector plate is further provided with a rear mold limiting column 9 for cooperatively limiting the spacing distance between the rear mold 1 and the ejection structure 2, so as to ensure the normal operation of the ejector pins 24.

The specific use principle is as follows: after the front die and the rear die 1 are relatively matched, an injection molding process is performed, and at the moment, the sliding block 3 is tightly propped against the injection molding product area of the rear die. After the injection molding process is finished, the front mold is opened upwards, and simultaneously the inclined guide posts are driven to synchronously move upwards, and as the inclined guide posts penetrate through the inclined guide post holes 8 on the sliding block 3, the sliding block 3 is driven to move outwards along the sliding block pressing strips 10, so that the sliding block 3 is separated from an injection molding product area. When the sliding block 3 is withdrawn outwards to a designated position, the first positioning hole 6 and the second positioning hole 7 are overlapped up and down, the ejection structure 2 is upwards close to the rear die 1 under the pushing action of the oil cylinder, so that the ejector pin 24 and the anti-collision rod 4 are driven to be upwards inserted into the rear die 1, and the ejector pin 24 penetrates out of an injection molding product area to eject an injection molded product; at this time, the impact beam 4 is inserted into the first positioning hole 6 and the second positioning hole 7 from below to above. When the mold is closed again for injection molding after the product is taken out, the ejection structure 2 moves downwards to reset, and drives the ejector pin 24 and the anti-collision rod 4 to retract downwards; if the anti-collision rod 4 is not separated from the second positioning hole 7, a certain blocking effect is achieved on the sliding block 3, the sliding block 3 is fixed to prevent the sliding block 3 from sliding, and the sliding block 3 is prevented from colliding with the thimble 24 due to improper operation; meanwhile, the movement of the inclined guide post is limited, so that the front die cannot be matched with the rear die 1, the condition that the thimble 24 is not completely withdrawn to cause the ejection of the front die during abnormal die matching is avoided, and the thimble 24 or the surface of the front die is prevented from being damaged; when the ejection structure 2 is completely reset, the anti-collision rod 4 is driven to move downwards and completely separate from the second positioning hole 7, the sliding block 3 can slide, the inclined guide post moves along with the sliding block, and the front die and the rear die 1 are buckled relatively again to form injection molding.

It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that the utility model is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the utility model.

Claims (5)

1. An anti-collision mechanism in an ejection die, which is characterized in that: the injection molding machine comprises a front mold, a rear mold and an ejection structure, wherein the front mold and the rear mold can be buckled relatively for injection molding, a plurality of slide block cavities are arranged on the injection molding product side of the rear mold, a slide block for injection molding is slidably arranged in each slide block cavity, and at least one first positioning hole penetrating through the rear mold is formed in the bottom surface of each slide block cavity;

the sliding block is provided with an inclined guide post hole, an inclined guide post is arranged in the sliding block to drive the rear die to slide, and the upper end of the inclined guide post is fixedly arranged on the front die; each sliding block is also provided with a second positioning hole corresponding to the first positioning hole;

the ejection structure is arranged on one side facing away from the side of the injection product of the rear mould and comprises an ejector plate and a plurality of ejector pins arranged on the ejector plate, wherein the top ends of the ejector pins can penetrate through the rear mould and are positioned in the injection product area to eject the injection product; the ejector plate is provided with an anti-collision rod corresponding to the arrangement position of the first positioning hole, and the anti-collision rod can penetrate through the first positioning hole and the second positioning hole.

2. An impact mechanism in an ejector die as in claim 1 wherein: the thimble plate comprises a thimble panel and a thimble bottom plate; the anti-collision rod is vertically fixed on the ejector plate, and the lower end of the anti-collision rod is in an outward protruding truncated cone shape; the anti-collision rod passes through the thimble panel from bottom to top, and the lower end of the anti-collision rod is clamped and fixed in the corresponding groove; the ejector pin bottom plate is fixedly arranged on the bottom surface of the ejector pin panel, and the bottom surface of the lower end of the anti-collision rod abuts against the top surface of the ejector pin bottom plate.

3. An impact mechanism in an ejector die as in claim 1 wherein: a sliding block pressing bar for sliding the sliding block is arranged in the sliding block cavity, and a sliding groove is formed between the sliding block pressing bar and the bottom surface of the sliding cavity; and a stop limiting block is fixedly arranged at the outer side edge of the sliding block cavity.

4. An impact mechanism in an ejector die as in claim 1 wherein: the second positioning holes and the first positioning holes are positioned on the same straight line, and the sizes of the second positioning holes and the first positioning holes are equal; after the die is opened, when the sliding block completely withdraws to a designated position, the second positioning hole and the first positioning hole are overlapped up and down, and the anti-collision rod can sequentially pass through the first positioning hole and the second positioning hole from bottom to top.

5. An impact mechanism in an ejector die as in claim 1 wherein: and the ejector plate is also provided with a rear die limiting column.

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