KR20160065069A - Mold die for injection of car door out side handle and manufacturing method of the same - Google Patents

Abstract

The present invention relates to a injection molding mold for exterior automobile door handles and a manufacturing method of the same, in which molding is performed by integrating a cavity mold and a core mold, thereby eliminating the problem of the prior art mold having a structure that often causes sharp blade-like parting lines due to differences in the parting lines or flashes. On one side of the cavity mold, a first insert unit/second insert unit are tentatively joined and the tentatively joined site is finely polished, and the finely polished first insert unit/second insert unit are joined with the core mold. Accordingly, the present invention provides a plastic injection molding mold for exterior automobile door handles and a manufacturing method of the same, which prevent the formation of sharp blade-like burrs on the parting lines of molded plastic parts, thereby protecting the worker against injuries caused by such burrs.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for injection molding,

The present invention relates to an injection mold for plastic molding, and more particularly to a conventional mold structure in which a parting line is formed by a step or fine flush on a parting line, which is injected in a state where the cavity-side mold and the core- Is different from the first embodiment in that the pre-bonded portion is finely polished in a state where the first insert portion / the second insert portion is preliminarily bonded to one side of the cavity-side mold, and then the first insert portion / (BURR) of any shape is not formed on the outer surface of the parting line of the plastic molding of the automobile door manufactured at the time of injection molding so as to be bonded to the manufactured core mold, In addition to being able to be safely protected from accidents during the accident, The present invention relates to an automobile door outer handle plastic injection molding die and a method of manufacturing the same, which can be safely handled even when an automobile user operates the outer door handle of the automobile door.

Generally, an automobile refers to a machine that is equipped with a prime mover mounted on a car body, which is used to roll wheels, to travel on the ground, to carry people or cargo, or to perform various operations.

The automobile includes a gasoline engine, a diesel internal combustion engine, a driving motor such as a steam engine, an electric motor, and a gas turbine, and the like. The automobile includes a passenger car, a passenger car, a freight car, a special car and a two-wheeled car.

In the above-described automobile, about 20 to 30,000 parts are combined according to the type of vehicle.

However, the plastic molded product of the outer door handle of the automobile has a shape as shown in FIG. 1, and the pre-improvement parting line 11 is formed in the pre-reforming molded product 10, The parting line or fine flush on the pre-improvement parting line 11 before the improvement shows a sharp blade shape so that the operator can not be safely protected from a safety accident during the work process. There arises a problem that an automobile user can not handle it safely even when the outside handle of the automobile door is operated.

Accordingly, it is possible to solve the above-described problems and to provide an injection molding operator with a safe protection from a safety accident during a work process. There has been a continuing need to develop an automobile door outer handle plastic injection molding die and a manufacturing method thereof that can be safely handled even when the automobile user operates the outer door of the automobile door.

[Prior Art Literature]

1. Korean Registered Patent Publication No. 0180838 (Dec. 3, 1998)

The present invention is characterized in that no sharp blade type burr is formed on the outer surface of the parting line of the outer handle plastic molding product manufactured at the time of injection molding so that the operator can be protected safely Not only can you. And it is an object of the present invention to provide an automobile door outer handle plastic injection molding die and a method of manufacturing the same which can be safely handled even when the automobile user operates the outer door handle of the automobile door.

An automotive door outer handle plastic injection molding die according to an embodiment of the present invention includes a cavity-side mold; And a core side mold in which a molded product is injection-molded by being combined with the cavity-side mold, wherein a sharp blade-shaped forming portion is not formed on a parting line of the injection-molded molded product due to a step or a fine flash do.

And a first insert part and a second insert part are coupled to one side of the core mold.

The first insert portion and the second insert portion are micro-polished at a portion corresponding to a portion constituting the parting line after the injection molding, in a state where the first insert portion and the second insert portion are pre-coupled to the cavity-side mold.

The first insert portion and the second insert portion, which are formed by micro-polishing the portion corresponding to the portion constituting the parting line after the injection molding, are finally joined to one side of the core mold.

The first insert portion and the second insert portion, in which the portion corresponding to the portion constituting the parting line after the injection molding is finely polished, are formed by injection molding of the automobile door outer handle plastic part subjected to test injection and injection molding, And if it is confirmed, the step and the fine flash are eliminated.

According to another aspect of the present invention, there is provided a method of manufacturing an automotive door outer handle plastic injection molding die, comprising the steps of: fabricating a cavity side mold; Forming a first insert part / second insert part for forming a parting line, which is assembled with the cavity-side mold; Forming a core mold on which the first insert / second insert is finally joined; Coupling the first insert part / second insert part to one side of the cavity-side mold; A step of finely polishing the first insert / second insert portion and the pre-bonded portion of the cavity-side mold; And finally combining the first insert portion and the second insert portion finely-polished with the core-side mold on which the base is manufactured.

According to another aspect of the present invention, there is provided a method of manufacturing an automotive door outer handle plastic injection molding die, comprising: a step of confirming a step and fine flush of a parting line of an automobile door outer handle plastic part injection molded by trial injection; A step of correcting the step and the fine flush to eliminate the step and the fine flush based on the confirmation result in a state where the first insert part / second insert part finally joined is separated from the core side mold; And the first insert part / second insert part after the modification is in-situ and finally bonded to the core side mold.

According to the automobile door outer handle plastic injection molding die and the manufacturing method thereof of the embodiment of the present invention configured as described above, the cavity side mold and the core side mold are injected in a combined state, Unlike the conventional mold structure in which the line has a sharp blade shape, after the pre-bonded portion is finely polished in a state where the first insert portion / the second insert portion is preliminarily bonded to one side of the cavity side mold, The first insert / second insert portion is finally joined to the manufactured core die so as to form a sharpened blade-shaped burr of any shape on the outer surface of the parting line of the automobile door outer handle plastic molded product manufactured at the time of injection molding BURR) is not generated, so that the worker can be safely protected from safety accidents during the work process .

According to the automobile door outer handle plastic injection molding die of the present invention and the method of manufacturing the automobile door outer handle of the present invention, a sharp blade type BURR of any shape is formed on the outer surface of a parting line of an automobile door outer handle plastic molding product manufactured at the time of injection molding There is another effect that a car user can safely deal with the operation of the outside handle of the car door.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a molded automotive door exterior handle plastic injection molded product.
2 is a schematic view showing a coupling structure of an automobile door outer handle plastic injection molding die before improvement.
Fig. 3 is a schematic view showing a section where a process improvement is performed and a cross-section thereof, in an automobile door outer handle plastic injection molding die.
4 is a schematic view showing a coupling structure of an automobile door outer handle plastic injection molding die after improvement according to an embodiment of the present invention.
FIG. 5 is a state diagram showing that the improved first insert / second insert is finally coupled to the core mold according to an embodiment of the present invention. FIG.
6 is a photograph showing that the improved first insert / second insert is finally bonded to the core mold according to an embodiment of the present invention.
Fig. 7 is a photograph showing the exterior appearance after plating in an automobile door outer handle plastic injection-molded product after improvement according to an embodiment of the present invention. Fig.
FIG. 8 is a schematic view showing a manufacturing method of an automobile door outer handle plastic injection molding die according to an embodiment of the present invention.
9 is a flowchart showing a method of manufacturing an automobile door outer handle plastic injection molding die according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Embodiments in accordance with the concepts of the present invention can make various changes and have various forms, so that specific embodiments are illustrated in the drawings and described in detail in this specification or application.

It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms of disclosure, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In this specification, the terms "comprises ", or" having ", and the like, are used to specify the presence of stated elements, integers, steps, operations, elements, parts, or combinations thereof, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

Like reference numerals refer to like elements throughout the specification.

4 is a schematic view showing a coupling structure of an automobile door outer handle plastic injection molding die after improvement according to an embodiment of the present invention.

As shown in FIG. 4, the automotive door outer handle plastic injection molding die of the embodiment of the present invention includes a cavity-side mold 120 after the improvement; And an after-reforming core die (140) formed by injection molding the post-improvement formed product (110) with the cavity-side mold (120) after the improvement, wherein the improved after- The post parting line 111 is characterized in that no sharp-edged portion is formed by a step or fine flash.

The first insert part 130a and the second insert part 130b are coupled to one side of the core die 140 after the improvement.

The first insert portion 130a and the second insert portion 130b may be formed in a position corresponding to a portion constituting the after-improvement parting line 111 in the state of being pre-coupled with the cavity- Is subjected to fine grinding processing.

The first insert portion 130a and the second insert portion 130b, which are formed by micro-polishing the portion corresponding to the portion of the parting line 111 after the injection molding, ) Is finally connected to one side.

Further, the first insert portion 130a and the second insert portion 130b, which have been subjected to the fine grinding process on the portion corresponding to the portion forming the parting line 111 after the injection molding, In the case where the step of the parting line of the outer door handle plastic part and the fine flush are confirmed, it is preferable that the step is finely processed so that the step and the fine flush are eliminated.

FIG. 5 is a state diagram showing that the improved first insert / second insert is finally coupled to the core mold according to an embodiment of the present invention. FIG.

5, the automotive door outer handle plastic injection molding die according to the embodiment of the present invention includes a lower portion having a first insert portion 130a and a second insert portion 130b, A core-side mold 140 after the improvement as a side mold; And a post-improvement cavity side mold 120, which is formed with the core-side mold 140 after the improvement, and which is an upper side mold in which an injection molding material is melted and filled in an inner space.

After the first insert part 130a and the second insert part 130b are joined with the cavity side mold 120 after the improvement, the post-improvement parting line 110 ) Is a technical feature of an automobile door outer handle plastic injection molding die according to one embodiment of the present invention that a sharp knife-like molded portion is not formed by a step or a fine flash.

FIG. 6 is a photograph showing that the improved first insert / second insert portion is finally bonded to the core-side mold according to an embodiment of the present invention, and FIG. 7 is a cross- Fig. 8 is a photograph showing the appearance after plating in a plastic injection-molded product of an automobile door outer handle after it. Fig.

6 and 7, on the side of the core mold 140 after the improvement of the automotive door outer handle plastic injection molding die according to the embodiment of the present invention, first insert portions 130a and second insert portions 130b are inserted and joined.

Therefore, after the improvement of the post-improvement molded product 110 injection-molded in the automotive door outer handle plastic injection molding die of the embodiment of the present invention, a sharp blade shaped portion is not formed on the parting line 111 due to a step or a fine flash .

FIG. 8 is a schematic view showing a manufacturing method of an automobile door outer handle plastic injection molding die according to an embodiment of the present invention.

8, according to the manufacturing process of the automotive door outer handle plastic injection molding die of the embodiment of the present invention, first, as shown in FIG. 8A, the cavity side mold 120 after the improvement is assembled The first insert part 130a and the second insert part 130b constituting the parting line 111 after the improvement are separately fabricated.

Subsequently, as shown in FIG. 8B, the first insert 130a and the second insert 130b, which have been manufactured separately, are preliminarily bonded to the cavity-side mold 120 after the improvement.

In addition, the pre-bonded portions of the first insert portion 130a and the second insert portion 130b and the cavity-side mold 120 after the improvement are finely polished. In the mold manufacturing industry, "

Finally, as shown in FIG. 8C, the first insert portion 130a and the second insert portion 130b, which are finely polished, are inserted into the core-side mold 140 after the improvement, thereby completing the production of the mold.

9 is a flowchart showing a method of manufacturing an automobile door outer handle plastic injection molding die according to an embodiment of the present invention.

As shown in FIG. 9, a method of manufacturing an automotive door outer handle plastic injection molding die according to an embodiment of the present invention includes steps of: fabricating a cavity-side mold; Forming a first insert part / second insert part for forming a parting line, which is assembled with the cavity-side mold; Forming a core mold on which the first insert / second insert is finally joined; Coupling the first insert part / second insert part to one side of the cavity-side mold; A step of finely polishing the first insert / second insert portion and the pre-bonded portion of the cavity-side mold; And finally combining the first insert portion and the second insert portion finely-polished with the core-side mold on which the base is manufactured.

The method for manufacturing an automotive door outer handle plastic injection molding die according to an embodiment of the present invention may include steps of confirming a step and fine flush of a parting line of an automobile door outer handle plastic part injection molded by trial injection molding; A step of correcting the step and the fine flush to eliminate the step and the fine flush based on the confirmation result in a state where the first insert part / second insert part finally joined is separated from the core side mold; And the first insert part / second insert part after the modification is in-situ and finally bonded to the core side mold.

Therefore, according to the automobile door outer handle plastic injection molding die and the method of manufacturing the same according to the embodiment of the present invention configured as described above, Unlike the conventional mold structure in which the pre-improvement parting line 11 has a sharp blade shape due to a step or fine flush on the pre-improvement parting line 11, the first insert part 12 is formed on one side of the cavity- The first insert portion 130a / the second insert portion 130b, which are finely polished, after the pre-bonded portion is finely polished, in a state where the first insert portion 130a / the second insert portion 130b are pre- To the outer side of the parting line 111 after the improvement of the molded product 110 after the improvement of the outer handle of the automobile door manufactured at the time of injection molding, Blade shape By no burrs value (BURR) occurs, there is an effect that the worker be protected from accidents during the working process.

In addition, according to the automobile door outer handle plastic injection molding die of the present invention and the method of manufacturing the automobile door outer handle, the shape of the parting line 111 after improvement of the molded product 110 after improvement of the exterior handle of the automobile door, There is no sharp blade-type burr (BURR) of the car door, so that there is another effect that a car user can safely deal with the operation of the outside handle of the car door.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

It is therefore to be understood that the embodiments described above are illustrative in all aspects and not restrictive.

The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and range of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

10: Preformed product 11: Pre-improvement parting line
20: Cavity side mold before improvement 30: Core side mold before improvement
110: After improvement product 111: After improvement line
120: Cavity-side mold after improvement 130a: First insert part
130b: second insert part 140: core side mold after improvement

Claims (2)

Since the parting line is formed into a sharp blade shape due to a step or fine flash during injection molding of the plastic molded product of the outer door handle of a car door, there is a fear that a safety accident may occur, An automotive door outer handle plastic injection mold for solving the problems of injection molding dies,
A cavity side mold in which an injection molding material is melted and filled in an inner space; And
In order to form a parting line by being combined with the cavity-side mold, a portion corresponding to a portion forming the parting line after injection molding in a state of being pre-coupled with the cavity-side mold is finely polished, And a first insert part and a second insert part which are formed on a side of the core-side mold and are refined so as to eliminate the step and the fine flash when a step and fine flush of the parting line of the outer handle plastic part of the automobile door is confirmed And a core-side mold which is formed with the cavity-side mold and injection-molded into a molded product,
Wherein a molded part of a sharp blade shape is prevented from being formed on a parting line of the molded product to be injection molded by a step or a fine flush.
A method of manufacturing an automobile door outer handle plastic injection molding die according to claim 1,
A cavity-side mold preparing step of manufacturing a cavity-side mold in which an injection molding material is melted and filled in an inner space;
A first insert part and a second insert part for forming the parting line, which are formed with the cavity-side mold, are manufactured separately;
A core side mold manufacturing step of manufacturing a core side mold in which the first insert part and the second insert part are finally combined;
A pre-bonding step in which the first insert part and the second insert part are pre-coupled to one side of the cavity-side mold;
An insert machining step in which the first insert portion, the second insert portion, and the pre-bonded portion of the cavity-side mold are finely polished;
An insert engaging step of final engaging with the core-side mold in which the first insert portion and the second insert portion finely-polished are manufactured;
A test injection step of confirming whether there is a step and fine flush of the parting line of the exterior handle plastic part of the automobile door injection molded by injection molding;
An insert correction process is performed to correct the step and the fine flash so that the step and the fine flash are eliminated in a state in which the first insert portion and the second insert portion which are finally combined are separated from the core- step; And
And a final stage in which the first insert portion and the second insert portion that have been subjected to the quartz process are in-situ and finally joined to the core-side mold.

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