CN218256570U - Female die side thread demoulding mechanism - Google Patents

Abstract

The utility model discloses a female die side thread demoulding mechanism, wherein a male die assembly is provided with a male die core and an ejector plate; the ejector pin plate is movably and elastically arranged below the male die core. The female die assembly is provided with a female die core; the female die side thread demoulding mechanism is arranged in the female die assembly; the female die side thread demoulding mechanism comprises a toothed bar, a gear transmission mechanism and a toothed bar connector, wherein the gear transmission mechanism is connected with the toothed bar connector; the front end of the tooth rod is connected to the tooth rod connector, the rear end of the tooth rod penetrates through the male die core, and the rear end of the tooth rod is abutted against the male die core in the matched die state of the female die core and the male die core. And a transmission chain connected with the gear transmission mechanism extends out of the side of the injection mold and is connected with external equipment. The demoulding mechanism is suitable for the functional requirement of reverse tooth removal of a screw tooth product, effectively reduces the risk of tooth bar blocking or tooth decay of the product, and effectively improves the production stability of the mould.

Description

Female die side thread demoulding mechanism

Technical Field

The utility model belongs to the technical field of injection mold design and specifically relates to indicate a locate the inside female mould side screw thread demoulding mechanism of injection mold to realize the reverse tooth action of taking off of screw tooth product.

Background

As shown in fig. 1 to fig. 3, the screw product in the industry uses a male-mold-side thread demoulding mechanism inside an injection mold to realize the forward direction thread demoulding action of the screw product. The existing injection mold comprises a female mold assembly a and a male mold assembly b which are arranged in a matched manner, and the existing male mold side thread demoulding mechanism is arranged in the male mold assembly b of the existing injection mold. The female die assembly a is provided with a female die core 10; the male die assembly b is provided with a male die core 20 and an ejector plate 30.

The conventional male mold side thread demolding mechanism comprises a tooth rod connector 40, a gear transmission mechanism 50 and a tooth rod 60. The tooth bar connector 40 is connected with the gear transmission mechanism 50 and the tooth bar 60; an ejector pin for ejecting the thread bar 60 after the thread removal out of the existing injection mold is fixed to the ejector plate 30, and the ejector plate 30 is movably and elastically disposed between the core insert 20 and the thread bar connector 40. Specifically, the rear end of a screw rod 60 for forming the threaded portion of the threaded product is connected to the screw rod connector 40, and the front end of the screw rod 60 sequentially passes through the ejector plate 30 and the core insert 20 from back to front, and abuts against the core insert 10 in the mold closing state of the core insert 10 and the core insert 20, and is broken and formed with the core insert 10.

An ejector plate 30 in the conventional male die side thread demoulding mechanism is arranged between a male die core 20 and a tooth bar connector 40, and the matching length of the tooth bar 60 needs to be accumulated by the ejection stroke of the ejector plate 30, so that the interference with the ejector plate 30 is avoided, and the tooth bar 60 is longer. Specifically, in this embodiment, the thickness of the master mold assembly a is 60mm; the die thickness of the male die assembly b is 260mm, and the length of the tooth rod 600 assembled in the male die assembly b reaches 97mm. In the actual production process, the phenomenon that the tooth bar 60 is stuck or the tooth of the screw tooth product is decayed often occurs. Moreover, because individual screw products need to be reversely stripped due to functional requirements, the conventional male die side thread demoulding mechanism is used for reversely stripping, so that abnormal conditions such as difficult die opening, thread product twisting and stripping of an injection die are easily caused, and the design and development progress and the mass production stability of subsequent dies are seriously influenced.

Then, the transmission chain 70 of the existing injection mold connecting gear transmission mechanism 50 extends out of the top end face of the injection mold to be connected with external equipment, the external equipment can only be installed at the top of the injection molding machine, the risk of interference with the automatic mechanical arm exists, a jig on the mechanical arm needs to be synchronously transformed to avoid, and the transformation cost is high.

SUMMERY OF THE UTILITY MODEL

For solving the problem that prior art exists, the utility model provides a female mould side screw thread demoulding mechanism, this demoulding mechanism are applicable to the reverse functional requirement of taking off the tooth of screw tooth product, effectively reduce the risk of the dead or mashed tooth of product of tooth pole card, effectively improve mould production stability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a female die side thread demoulding mechanism is arranged in an injection mould, and the injection mould comprises a female die assembly and a male die assembly which are matched;

the male die assembly is provided with a male die core and an ejector plate; the ejector pin plate is movably and elastically arranged below the male die core;

a female die assembly provided with a female die core; the female die side thread demoulding mechanism is arranged in the female die assembly and comprises a toothed rod, a gear transmission mechanism and a toothed rod connector, and the gear transmission mechanism is connected with the toothed rod connector; the front end of the tooth rod is connected to the tooth rod connector, the rear end of the tooth rod penetrates through the male die core, and the rear end of the tooth rod is abutted against the male die core in the matched die state of the female die core and the male die core.

According to the female die side thread demoulding mechanism, the gear transmission mechanism is connected with the transmission chain, and the side of the transmission chain extending out of the injection mould is connected with external equipment.

Compared with the prior art, the utility model provides a technical scheme has following beneficial effect:

firstly, the utility model discloses female mould side screw thread demoulding mechanism sets up in injection mold's female mould assembly to satisfy the reverse functional demand of taking off the tooth of thread product.

Secondly, the thimble board sets up in the below of public mould benevolence, and the tooth pole need not to consider again and passes the stroke of thimble board, can carry out compression design with the cooperation length of tooth pole, ensures that the transmission of tooth pole is stable, effectively reduces the dead risk of the mashed tooth of tooth pole card or product, and then realizes the screw tooth product and follow the utility model discloses the smooth high-efficient completion of female die side screw thread demoulding mechanism drawing of patterns action.

Thirdly, the utility model discloses the compression design of tooth pole cooperation length, when the mould of further compression master model assembly is thick simultaneously, improved the assembly thickness that has shortened utility model injection mold, effectively improve mould production stability.

Fourthly, the utility model discloses gear drive's drive chain stretches out external equipment is connected to injection mold's avris, can not interfere with automatic robotic arm and other equipment, and the transformation is with low costs.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

FIG. 1 is a schematic perspective view of a prior art injection mold (the arrows in the figure indicate the front-back direction);

FIG. 2 is a schematic perspective cross-sectional structural view of a prior art pin side thread stripper mechanism;

FIG. 3 is a schematic plan sectional view of a prior art pin side thread stripper mechanism (with the arrows in the figure pointing in the forward and backward direction);

fig. 4 is a schematic perspective view of the injection mold of the present invention (the arrow in the figure indicates the front-back direction);

fig. 5 is a schematic perspective sectional view of the side thread demoulding mechanism of the female mould of the present invention;

fig. 6 is a schematic plan sectional view of the female-mold-side thread stripper according to the present invention (in the figure, the arrow indicates the front-back direction);

fig. 7 is a schematic view of the structure of the portion C of fig. 6.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.

In the claims, the specification and the drawings, unless otherwise expressly limited, to the extent that directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" and the like are used, the positional or orientational relationships illustrated in the drawings are based on the positional and orientational relationships illustrated in the drawings and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention in any way.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the term "fixedly connected" or "fixedly connected" is used, which is to be understood broadly, that is, any connection mode without displacement relation or relative rotation relation between the two, that is, including non-detachably fixed connection, integrated connection and fixed connection through other devices or elements.

In the claims, the specification and the drawings, the terms "including", "comprising" and variations thereof, if used, are intended to be inclusive and not limiting.

Now, the female mold side thread demolding mechanism of the present invention will be described with reference to fig. 4 to 7. The female die side thread demoulding mechanism is arranged in an injection mould, and the injection mould comprises a female die assembly A and a male die assembly B which are matched. In this embodiment, the female mold assembly a is located at the front side of the injection mold, and the male mold assembly B is located at the rear side of the injection mold. The female die assembly A is provided with a female die core 100; the male die assembly B is provided with a male die core 200 and an ejector plate 300. The ejector plate 300 is movably and elastically disposed below the core insert 200. The tooth pole 60 that will take off the tooth and accomplish is ejecting the utility model discloses injection mold's thimble 800 is fixed on the thimble board 300.

The utility model discloses master model side screw thread demoulding mechanism sets up in master model assembly A to satisfy the reverse functional demand of taking off the tooth of screw thread product. The female die side thread demoulding mechanism comprises a tooth bar 600, a gear transmission mechanism 500 and a tooth bar connector 400. The dental stem connector 400 connects the gear assembly 500 and the dental stem 600. Specifically, the front end of the tooth bar 600 is connected to the tooth bar connector 400, the rear end of the tooth bar 600 penetrates through the core insert 200, and the rear end of the tooth bar 600 abuts against the core insert 200 in the matched mold state of the cavity insert 100 and the core insert 200, and is broken and molded with the core insert 200. The ejector retainer plate 300 is no longer arranged between the male mold core 200 and the tooth rod connector 400, the tooth rod 600 does not need to consider the stroke passing through the ejector retainer plate 300, the matching length of the tooth rod 600 can be designed in a compression manner, the tooth rod 600 is ensured to be stably driven, the risk of tooth rod jamming or product tooth decay is effectively reduced, and the smooth and efficient completion of the demolding action of the female mold side thread demolding mechanism arranged in the female mold assembly A is further realized; and the utility model discloses tooth pole 600 cooperation length's compression design, when further compressing master model assembly A's mould is thick simultaneously, improved and shortened utility model injection mold's assembly thickness, effectively improve mould production stability. The length of the utility model tooth bar 600 can be shortened by more than 50% compared with the tooth bar length in the prior art. In the embodiment, the thickness of the female die assembly A is 95mm, the length of the tooth bar 600 assembled in the female die assembly A is 40mm, and the length of the tooth bar is shortened by 57mm compared with the tooth bar in the prior art; public mould assembly B's mould thickness is 170mm to make utility model injection mold's assembly thickness shorten 55mm than prior art injection mold's assembly thickness.

The utility model discloses connecting gear drive 500's drive chain 700 among the female mould side screw thread demoulding mechanism stretches outside external equipment is connected to injection mold's avris. The external equipment can be arranged in a safety door at the side of the injection molding machine, cannot interfere with an automatic mechanical arm and other equipment, and is low in modification cost; and the operation is simpler and more convenient, and the peripheral equipment and the environment of the injection molding machine are simpler. The side is a left side or a right side.

While the foregoing specification illustrates and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as limited to the disclosed embodiments, and that modifications and environments may be resorted to, falling within the scope of the inventive concept as described herein, either as indicated by the above teachings or as modified by the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (2)

1. A female die side thread demoulding mechanism is arranged in an injection mould, and the injection mould comprises a female die assembly (A) and a male die assembly (B) which are matched; it is characterized in that, among them,

the male die assembly (B) is provided with a male die core (200) and an ejector plate (300); the ejector plate (300) is movably and elastically arranged below the core insert (200);

a female die assembly (A) provided with a female die core (100); the female die side thread demoulding mechanism is arranged in the female die assembly (A); the female die side thread demoulding mechanism comprises a toothed bar (600), a gear transmission mechanism (500) and a toothed bar connector (400), wherein the gear transmission mechanism (500) is connected with the toothed bar connector (400); the front end of the tooth rod (600) is connected to the tooth rod connector (400), the rear end of the tooth rod (600) penetrates through the male mold core (200), and the rear end of the tooth rod (600) abuts against the male mold core (200) in the mold closing state of the female mold core (100) and the male mold core (200).

2. The female mold side thread demoulding mechanism according to claim 1, wherein a transmission chain (700) is connected with the gear transmission mechanism (500), and the side of the transmission chain (700) extending out of the injection mold is connected with an external device.

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