KR20160005457A - Hair line processing apparatus for a core surface of injection mold - Google Patents

Abstract

The present invention relates to a hairline processing apparatus for a core surface of an injection mold, which significantly reduces the time and manpower required for the hairline processing and minimizes processing defects by enabling a grinding process to be carried out on an asymmetrical cylindrical core having an asymmetrical curved surface. The hairline processing apparatus comprises: a main body having a driving unit; a rotary body which is rotated by being connected to the driving unit and is exposed to one side of the main body; a fixing chuck installed at an end portion of the rotating body; a rotary shaft which is fixated by being detachably engaged with the fixing chuck and includes a circular plate formed at an end thereof; an inclined block which is detachably mounted on the circular plate, has an outer surface formed to be inclined, and holds the center of rotation of the core as a lower end of the asymmetrical cylindrical core is detachably mounted thereon; a fixture provided to be close to the asymmetrical curved surface of the core; sandpaper which is detachably fixated to an end portion of the fixture, and adheres to the asymmetrical curved surface of the core to grind the asymmetrical curved surface of the core; and an elastic support unit which is installed between the main body and the fixture, and enables the fixture to be horizontally moved while elastically supporting the fixture to be bent.

Description

TECHNICAL FIELD [0001] The present invention relates to a hair line processing apparatus for a core surface of an injection mold,

[0001] The present invention relates to an apparatus for processing a hairline on a core surface of an injection mold for machining a hairline on the surface of a withdrawal-type core, and more particularly to an apparatus and method for grinding an asymmetric cylindrical core having an asymmetric curved surface The present invention relates to a hair-line processing apparatus for a core surface of an injection mold that minimizes defective machining while remarkably reducing the time and manpower of the hair-line processing.

In general, a hair line is a surface finishing method for IT products or high-end electronic appliances. It is an implementation method in which a plurality of thin wires are repeatedly inserted. The hair line is a surface processing technique (aluminum or stainless steel And drawing thin lines on the same thin metal plate).

As a method for realizing such a hair line, a method of constructing a hair line by processing thin wire into a thin metal plate such as aluminum or stainless steel is generally used.

In recent years, hair lines have been processed on the outer surface of plastic injection molds instead of metal sheets to express metal-like textures.

A method of processing a hair line in such an injection molded article is a method of embodying a hair line by processing a hair line into a mold cavity or core of a metallic material and then molding the molded article into an injection molded product. The method includes grinding, There are several ways to implement hairlines such as laser processing, buffing, and the like.

However, the above-described conventional techniques have the following problems.

Generally, machining of a hair line by grinding of a mold core is applied only to a core in a planar state, and a core having a shape similar to an asymmetric cylinder has an asymmetric curved surface, which is difficult to grind and is mainly subjected to corrosion processing. The corrosion processing of the cylindrical core takes a lot of time and manpower, and the corrosion treatment is not smoothly carried out, resulting in frequent machining defects.

Open Patent No. 2010-0041488 "Injection mold with hair line and its article" (2010.04.22)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hairline machining apparatus for a core surface of an injection mold having an asymmetric curved surface and an asymmetric cylindrical core so as to allow grinding to be performed, .

It is another object of the present invention to provide an apparatus for processing a hairline of a core surface of an injection mold in which adjustment of a horizontal installation angle of a fastener can be easily performed through each rotary member.

It is another object of the present invention to provide an apparatus for processing a hairline of a core surface of an injection mold, in which sandpaper can be easily replaced through a rubber ring.

In order to achieve the above object, an apparatus for processing a hairline of a core surface of an injection mold according to the present invention comprises: a main body having a driving unit; A rotator connected to the driving unit and rotated and exposed to one side of the main body; A fixing chuck installed at an end of the rotating body; A rotary shaft detachably engaged with the fixing chuck and having a disc at its end; An inclined block which is detachably mounted on the disk and has an inclined outer surface, a lower end of the asymmetric cylindrical core being detachably mounted to hold the rotation center of the core; A fixture provided close to an asymmetric curved surface of the core; A sandpaper which is removably fixed to an end of the fixture and is in close contact with an asymmetric curved surface of the core to grind an asymmetric curved surface of the core; An elastic support portion provided between the main body and the fixture and elastically supporting the fixture so as to allow the fixture to move horizontally; .

Further, the elastic support portion of the " hair line processing device for core surface of injection mold according to the present invention "according to the present invention includes guide rails horizontally mounted on the outer surface of the body corresponding to the cores, A hinge body mounted on the upper surface of the sliding block, a hinge pin inserted into the hinge body and rotatably fixing one end of the fixing hole to the hinge body, And a spring mounted between the outer surface of the hinge body and the lower surface of the fixing member and elastically supporting the fixing member by pulling the fixing member toward the lower side corresponding to the hinge body.

Further, the elastic support portion of the " hair line processing device for core surface of injection mold according to the present invention "according to the present invention comprises: a rotary member to which an upper end is attached to a lower surface of the hinge body; And a coupling screw screwed into the lower surface of the rotary member so as to adjust an angle on a plane of the rotary member to adjust an angle on a plane of the fixing member.

Further, the fixture of the "apparatus for processing a hairline on the core surface of an injection mold according to the present invention" further comprises an inclined surface formed at the lower end of the fixture corresponding to the outer surface of the core.

Further, the sandpaper of the " apparatus for forming a hairline on the core surface of an injection mold according to the present invention "further comprises a rubber ring fitted in the fixture to fix the sandpaper so that the sandpaper is replaceably fixed to the fixture .

As described above, according to the present invention, asymmetrical cylindrical cores having asymmetric curved surfaces can be grinded, the time and manpower of hairline processing can be significantly reduced, machining defects can be minimized, and productivity of asymmetric cylindrical cores can be significantly improved Effect.

Further, the present invention has an effect that the horizontal mounting angle of the fastener can be easily adjusted through the respective rotary members, thereby further improving convenience in the machining operation.

Further, the present invention has the effect that the sandpaper can be easily replaced through the rubber ring, thereby improving the convenience of the replacement work, and the work of machining the core can be performed more quickly.

1 is a schematic plan view of a hair line processing apparatus according to the present invention,
Figure 2 is a schematic cross-sectional view of the AA line of Figure 1,
3 is a schematic perspective exploded perspective view of a hair line processing apparatus according to the present invention,
Fig. 4 is a schematic perspective view showing a state before asymmetric cylindrical core machined by a machining apparatus according to the present invention,
Fig. 5 is a schematic plan view showing the operation of the machining apparatus according to the present invention,
6 is a schematic plan view showing a state after machining of an asymmetric cylindrical core machined by a machining apparatus according to the present invention,
FIG. 7 is a photograph showing a print produced by a core processed by a processing apparatus according to the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

FIG. 1 is a schematic plan view of a hair line processing apparatus according to the present invention, FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1, and FIG. 3 is a schematic exploded perspective view of a schematic portion of a hair line processing apparatus according to the present invention.

As shown in the drawing, the hair line processing apparatus of the core surface of the injection mold according to the present invention comprises a main body 10, a rotating body 20 connected to the main body 10 and rotated, A rotary shaft 40 engaged with the fixed chuck 30, a tilting block 50 coupled to the rotary shaft 40, and a tilting block 50 fixed to the tilting block 50. [ A sandpaper 70 provided at an end of the fixture 60 and an elastic supporter 80 provided between the fixture 60 and the main body 10, .

The main body 10 has a driving part 11 and serves to provide a place where various parts including the elastic supporting part 80 are installed. The driving unit 11 is a well-known means for rotating the rotating body 20 by the same operation as motor driving.

The rotating body 20 is connected to the driving unit 11 and is exposed at one side of the main body 10 and rotates according to the driving of the driving unit 11 to rotate the core C connected thereto And provides a place where the fixing chuck 30 is installed.

The fixing chuck 30 is installed at an end of the rotating body 20 and is known to be able to fix the rotation shaft 40 by fixing or releasing the rotation shaft 40.

The rotary shaft 40 is detachably engaged with and fixed to the fixing chuck 30 and a disk 41 is formed at an end of the rotary shaft 40. The rotary shaft 40 can be easily engaged with and fixed to the fixing chuck 30, So that the inclined block 50 can be easily mounted.

The inclined block 50 is detachably mounted on the circular plate 41 and has an inclined outer surface. The lower end of the asymmetric cylindrical core C is detachably mounted and the core C is tilted to one side, And serves to hold the center of rotation of the core (C).

The center of gravity of the asymmetric curved surface formed on the outer surface of the core C is inclined to one side. The inclined block 50 is inclined to the rotation center 40 ) In the center of the image.

Here, the center of rotation is the center of gravity of the core (C) having an asymmetric cylindrical shape, and the most suitable center of the core (C) can be rotated in a circular shape.

Although not shown, the rotary shaft 40 having the above-described structure passes through the circular plate 41 and the inclined block 50 to fasten the bolt to one end of the core C, The inclined block 50 and the core C can be detachably coupled to each other so that the inclined block 50 and the core C can be sequentially coupled to the rotating shaft 40. [

The fixture 60 is provided close to the asymmetric curved surface of the core C and fixes the sandpaper 70 and adheres the sandpaper 70 to the outer surface of the core C. [

The fixture 60 further includes an inclined surface 61 corresponding to the outer surface of the core, The inclined surface 61 allows the end of the fixture 60 to be more tightly and closely attached to the outer surface of the core C.

The sandpaper 70 is detachably fixed to the end of the fixture 60 and is brought into close contact with the asymmetric curved surface of the core C by the fixture 60 to grind the asymmetric curved surface of the core C And forms a hair line.

The sandpaper 70 further includes a rubber ring 71 fitted in the fixture 60. The rubber ring 71 is a ring made of a rubber material and serves to fix the sandpaper 70 to the fixture 60 so that the sandpaper 70 is replaceably fixed to the fixture 60.

The elastic support portion 80 is installed between the main body 10 and the fixture 60 so that the fixture 60 can be moved in a horizontal direction while elastically bending the fixture 60 It plays a role.

The elastic support portion 80 having the above-described function is provided with a guide rail 81 horizontally mounted on the outer surface of the main body 10 in correspondence with the core C and horizontally grooved on the upper surface thereof, A sliding block 82 slidably fitted in the groove of the hinge body 83 and a hinge body 83 mounted on the upper surface of the sliding block 82. The hinge body 83 is inserted into the hinge body 83, And a spring 85 mounted between the outer surface of the hinge body 83 and the lower surface of the fixture 60. The hinge pin 84 is fixed to the hinge body 83,

The guide rail 81 is adapted to horizontally move the sliding block 82 along a groove formed on the upper surface thereof. The sliding block 82 is horizontally moved along the groove of the guide rail 81 so that the fixture 60 moves horizontally along the guide rail 81 corresponding to the core C.

Here, the horizontal movement of the sliding block 82 along the guide rail 81 can be achieved by an operator's manual operation or by an automatic drive such as a rack and pinion driven by a motor.

The hinge body 83 serves to provide a place where one end of the fixture 60 is hinged to the hinge pin 84. One end of the fixture 60 is hinged to the hinge body 83 by the hinge body 83 and the hinge pin 84 so that the fixture 60 can be vertically moved in correspondence with the hinge body 83. [ And is rotatably installed.

The spring 85 elastically pulls the fixture 60 downward corresponding to the hinge body 83 so that the other end of the fixture 60 can be brought into close contact with the outer surface of the core C . The spring 85 is horizontally moved in a state where the fixture 60 is in close contact with the outer surface of the core C so that the fixture 60 can be moved horizontally along the outer surface of the core C. [ As shown in FIG.

The elastic support portion 80 includes an angle rotator 86 having an upper end attached to a lower surface of the hinge body 83 and a lower end connected to the sliding block 82, And a coupling screw 87 screwed to the lower surface of the base plate 90. [

Each of the rotary members 86 is fixed to the sliding block 82 in such a manner that the rotary member 86 can rotate on the plane by the engagement screw 87 so that the angle of the plane of the fixing member 60 can be easily adjusted by the operator .

FIG. 4 is a schematic perspective view showing a state before the asymmetric cylindrical core processed by the machining apparatus according to the present invention before machining, FIG. 5 is a schematic plan view of the rough main part showing the operating state of the machining apparatus according to the present invention, FIG. 7 is a photograph showing a print produced by the core processed by the processing apparatus according to the present invention. FIG. 7 is a schematic plan view showing the asymmetric cylindrical core processed by the processing apparatus according to the present invention.

As shown in the figure, the core C having an asymmetric curved surface formed as an asymmetric curved surface is mounted on the circular plate 41 with its rotation center being held by the inclined block 50.

When the rotary shaft 40 is rotated in this state, the disk 41, the inclined block 50, and the core C are rotated together with the rotation center as a reference.

The core 60 is attached to the outer surface of the core C in a state in which the core C is rotated according to the rotation of the rotary shaft 40 so that the sandpaper 70, The outer surface of the core C is processed to form a hair line.

At this time, the worker moves the fixture 60 horizontally or adjusts the angle on the plane of the fixture 60 to process it according to the outer surface of the core C.

6, the hair line H is machined to have a shape in which the diameter of the core C is inclined toward a side having a relatively small diameter, This is because the hair line H protrudes obliquely in the direction in which the article is removed when the article shown in FIG. 7 is released to the outer surface of the core (C) by injection molding with the core (C) ) Is smoothly prevented from being damaged or defective in the hair line formed on the article, which may occur in the article during the release.

The injection product of FIG. 7 is injection-molded by the asymmetric cylindrical core C and has an asymmetric tubular inner curved surface, and a hair line is formed on the inner curved surface of the asymmetric tubular shape.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is clear that the present invention can be suitably modified and applied in the same manner. Therefore, the above description does not limit the scope of the present invention, which is defined by the limitations of the following claims.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

10: Body
11:
20: rotating body
30: Fixing chuck
40:
41: Disc
50: inclined block
60: Fixture
61:
70: Sandpaper
71: Rubber ring
80: Elastic support
81: guide rail 82: sliding block
83: hinge body 84: hinge pin
85: spring 86: each rotating member
87: Coupling screw

Claims (5)

A main body 10 having a driving part 11;
A rotating body 20 coupled to the driving unit 11 and exposed to one side of the body 10;
A fixing chuck (30) installed at an end of the rotating body (20);
A rotary shaft 40 detachably engaged with the stationary chuck 30 and having a disk 41 at its end;
A slope block 50 detachably mounted on the disk 41 and having an inclined outer surface, a lower end of the asymmetric cylindrical core being removably mounted to hold the center of rotation of the core;
A fixture (60) provided close to an asymmetric curved surface of the core;
A sandpaper (70) detachably fixed to an end of the fixture (60) and closely contacting the asymmetric curved surface of the core to grind the asymmetric curved surface of the core;
An elastic support portion 80 provided between the main body 10 and the fixture 60 to elastically support the fixture 60 while allowing the fixture 60 to move horizontally;
Wherein the core of the injection mold is formed of an elastic material.
The method according to claim 1,
The elastic support portion (80)
A guide rail 81 mounted horizontally on the outer surface of the body 10 in correspondence with the core and having a horizontal groove formed on the upper surface thereof,
A sliding block 82 slidably fitted in the groove of the guide rail 81,
A hinge body 83 mounted on the upper surface of the sliding block 82,
A hinge pin 84 fitted in the hinge body 83 and rotatably fixing one end of the fixing hole 60 to the hinge body 83,
A spring 85 mounted between the outer surface of the hinge body 83 and the lower surface of the fixture 60 and elastically supporting the fixture 60 in a downward direction corresponding to the hinge body 83,
Wherein the core of the injection mold is formed of an elastic material.
3. The method of claim 2,
The elastic support portion (80)
An angle rotator 86 having an upper end attached to the lower surface of the hinge body 83,
The lower end of the sliding block 82 is engaged with the sliding block 82 and the sliding block 82 is screwed into the lower surface of the rotary member 82 to adjust the angle of the plane of the rotary member 86, An engaging screw 87 for adjusting the angle,
Further comprising a plurality of elastic members for elastically deforming the core surface of the injection mold.
The method according to claim 1,
The fixture (60)
The inclined surface 61 formed at the lower end of the end of the fixture 60 corresponding to the outer surface of the core,
Further comprising a plurality of elastic members for elastically deforming the core surface of the injection mold.
The method according to claim 1,
The sandpaper (70)
A rubber ring 71 fitted in the fixture 60 to fix the sandpaper 70 so that the sandpaper 70 is replaceably fixed to the fixture 60,
Further comprising a plurality of elastic members for elastically deforming the core surface of the injection mold.

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