KR20220080489A - Lapping tool for glass gorming mold - Google Patents

Abstract

According to the present invention, when the outer surface of the thermoforming mold is closely adhered regardless of shape and shape, the desired roughness can be obtained by friction with uniform pressure, and the working time can be significantly reduced because lapping is performed mechanically. Of course, it is possible to improve the quality of the thermoforming mold by continuously maintaining an excellent and uniform state, as well as to improve the quality of the 3D glass to be molded through this;
a tool body with a mounting tip protruding from the center of the upper portion so as to be mounted on a rotating shaft provided in the lapping machine;
a wrapper attachment surface protruding from the bottom surface of the tool body;
It is characterized in that it includes a wrapper for wrapping the surface of the thermoforming mold which is attached to the wrapper attachment surface and is seated on the bed of the wrapping machine.

Description

Lapping tool for glass thermoforming mold {LAPPING TOOL FOR GLASS GORMING MOLD}

The present invention relates to a lapping tool for a glass thermoforming mold, and more particularly, the surface of a mold for molding 3D glass mounted on electronic products such as portable terminals can be polished evenly with high roughness regardless of 3D shape such as curvature It is related to the provision of a wrapping tool designed to make

In the case of glass for constituting the display of electronic products such as mobile terminals, the shape of the mold for thermoforming the glass is also changed to the 3D type while changing from the conventional flat type to the 3D type having a round or curved shape as needed. It is true that much attention is paid to the surface roughness of the thermoforming mold in order to increase it.

Various lapping tools are used to polish the surface of the thermoforming mold as described above, and the technical configuration of a conventional typical lapping tool is as follows through the patent literature.

Patent Document 1, in the finishing operation of the surface of the mold forming part,

A tool shank (10) forming a space (11) therein and an operation hole (12) at the lower end thereof;

an operating body 20 inserted into the tool shank 10 and forming a connecting portion 25 protruding downward through the operating hole 12 in a stepped shape at the bottom thereof;

a hemispherical grinding wheel 30 coupled to the lower connection part 25 of the working body 20;

A resilient spring 40 inserted into the working body 20 to maintain a constant pressure on the surface of the mold forming part while the grinding wheel 30 is elastically operated and coupled to close the upper end of the tool shank 20 It is characterized in that it is composed of a closing cap (45).

Patent Document 2 discloses a base 105 having a coupling means 102 to be coupled with a polishing tool 101 of a polishing apparatus;

a brush groove 111 formed on the bottom surface of the base 105 to mount the brush 110;

a brush 110 for collecting a large number of hairs 112 in the brush groove 111 and fixing it with an adhesive means 113;

It is configured in the shape of a donut in which an abrasive hole 114 is formed in the center of the brush 110 so that an abrasive can be injected;

The hair 112 has a sharpened portion 115 formed at the end of the hair 112 by etching, and an abrasive 118 on the outer surface in the body 116 direction of the hair 112 in the pointed portion 115. ) is characterized in that it includes an abrasive attachment groove 117 formed on the surface so that it can be attached without being separated from the hair 112 in the polishing process.

Utility Model Registration No. 20 - 0406327 - 0000 Patent Application No. 10 - 2017 - 0102384

None.

Among the prior art as described above, Patent Document 1 has a hemispherical grinding wheel to enable grinding of straight or flat as well as curved surfaces, but the fine impact and vibration generated during the grinding process is continuously applied to the mold. It is transmitted to the mold of graphite material and causes micro-growth in the mold, and in severe cases, it is the cause of damage.

In particular, due to the characteristic of the hemispherical shape, it is not only realistically difficult to evenly and uniformly wrap the entire surface of a 3D shape consisting of a curvature and deformation of only a few millimeters, but also because the grinding wheel does not enter or rub into the curved part of the thermoforming mold, so the lapping This is an impossible situation.

In the case of Patent Document 2, by using the brush wheel as a hair material, it is possible to facilitate the polishing of a flat object, as well as the surface of the object having curvature or curvature, and the bent inner and outer surfaces, and a flat one The surface of the object to be polished having several surfaces other than the surface can also be easily polished.

In the case of Patent Document 2, it is composed of a base material and it is possible to wrap regardless of the shape of the thermoforming mold, but in particular, if the durability of the simulation is high, there is a high risk of damaging the surface of the mold rather than scratching, and this phenomenon In the case of lowering the simulation durability in order to prevent it, it is difficult to obtain the desired illuminance.

In order to solve this problem, after performing the first lapping of the surface of the mold using a machine, the operator is finally finishing the surface with soft paper sandpaper (polishing by hand).

When performing the above-mentioned investigative work, the lapping of the mold surface can be maintained at the desired roughness, but since the work must be repeated several times to complete the work, a lot of manpower is put in, and time and effort are spent to perform the work in detail shall.

In the case of dependence on manpower, fine dust is generated during the lapping process, and if such fine dust is unintentionally introduced through the respiratory tract of the worker even when wearing safety gear, it acts as a bad cause that harms health. , it causes a problem that it is difficult to maintain a comfortable working environment.

In particular, since lapping time and the surface roughness of the finished mold are different depending on the skill of the operator, it is difficult to maintain an excellent and uniform surface roughness, and this affects the quality of 3D glass molded through such a mold. There are several problems, such as being crazy.

Therefore, in the present invention, as invented to solve the above problems, the tool body 106 in which the mounting tip 105 is protruded from the center of the upper part so as to be mounted on the mounting shaft 102 provided in the lapping machine 101, ;

a wrapper attachment surface 116 protruding from the bottom surface of the tool body 106;

a wrapper 115 for wrapping the surface of the thermoforming mold 110 attached to the wrapper attachment surface 116 and seated on the bed 109 of the wrapping machine 101;

If the outer surface of the thermoforming mold is closely adhered regardless of shape and shape, the desired roughness can be obtained by friction with uniform pressure. It is possible to achieve the purpose of improving the quality of the thermoforming mold by continuously maintaining a uniform state, as well as improving the quality of the 3D glass to be molded through this.

The present invention improves the lapping tool mounted on the lapping machine so that the time required for lapping is greatly reduced through mechanical lapping, and the pressure and speed in the lapping process are kept constant so that the roughness of the mold surface can be maintained uniformly and excellently. It has the effect of significantly shortening the lapping time.

The present invention has the effect of being able to maintain a safe and comfortable working environment by mechanically performing the surface lapping of the thermoforming mold, as well as eliminating the health concerns of the workers that may be caused by the fine dust generated during the lapping process. .

The present invention improves the structure of a lapping tool so that it can maintain uniform and excellent surface roughness not only on the flat surface but also on the curved 3D surface, so that not only the manufacturing ease of the mold, but also the molding of the glass using the mold and the excellent and uniform surface roughness can be achieved. It has various effects such as obtaining quality products.

1 is an exploded perspective view showing a lapping tool for a glass thermoforming mold to which the technology of the present invention is applied.
2 is a perspective view of a front state of a lapping tool for a glass thermoforming mold to which the technology of the present invention is applied.
3 is a rear perspective view of a lapping tool for a glass thermoforming mold to which the technology of the present invention is applied.
Figure 4 is a fractured perspective view showing a lapping tool for a glass thermoforming mold to which the technology of the present invention is applied.
5 is a configuration diagram of a cross-sectional state of a lapping tool for a glass thermoforming mold to which the technology of the present invention is applied.
6 is a configuration diagram showing a state of use of a lapping tool for a glass thermoforming mold to which the technology of the present invention is applied.

Hereinafter, the preferred configuration and operation of the present invention for achieving the above object will be described with reference to the accompanying drawings.

1 is an exploded perspective view showing a lapping tool for a glass thermoforming mold to which the technology of the present invention is applied, FIG. 2 is a front perspective perspective view of the lapping tool for a glass thermoforming mold to which the technique of the present invention is applied, and FIG. A perspective view of the rear side of the lapping tool for a thermoforming mold for glass, FIG. 4 is a broken perspective view showing the lapping tool for a thermoforming mold for glass to which the technology of the present invention is applied, and FIG. 5 is a cross-sectional state of the lapping tool for a thermoforming mold for glass to which the technique of the present invention is applied 6 is a configuration diagram showing the state of use of the lapping tool for glass thermoforming mold to which the technology of the present invention is applied.

The lapping tool 100 for a glass thermoforming mold to which the technology of the present invention is applied is a substantially rectangular tool bar in which the mounting tip 105 is protruded from the upper center so that it can be mounted on the mounting shaft 102 provided in the lapping machine 101 . D 106 is provided.

A chamfer 107 or a concave groove 108 is formed on the side edge or side surface of the tool body 106 to provide ease of handling during attachment and detachment, and a wrapping machine 101 is provided on the bottom surface of the tool body 106. A wrapper attaching surface 116 for attaching a wrapper 115 for substantially wrapping the surface of the thermoforming mold 110 seated on the bed 109 of the is protruded.

It is preferable that the tool body 106 be made of a metal material to provide ease of installation and maintain strong mountability even during frequent replacement work, and may be configured in various shapes other than a square.

The wrapper 115 attached to the wrapper attachment surface 116 is located at the uppermost end and is firmly attached to the wrapper attachment surface 116 with an adhesive means such as an adhesive or double-sided tape to maintain its shape. (117) is provided.

A deformable part 118 is formed on the lower side of the shape maintaining part 117 so that it can be freely deformed according to the shape and shape of the thermoforming mold 110 during the lapping process by being connected to the thermoforming mold 110 in the lapping process. And, the lower end of the deformable portion 118 is configured by forming a wrapping portion 119 that is in close contact with the actual thermoforming mold 110 to perform lapping.

The shape maintaining part 117 is made of high-density to medium-density urethane foam to prevent the entire wrapper 115 from being rapidly deformed during the lapping process so that there is no risk of deformation even when an appropriate pressure is applied during the lapping process. do.

It is preferable that the deformable part 118 is made of a low-density sponge so that it can be varied according to the surface shape of the thermoforming mold 110 during the lapping process, so that the entire surface of the thermoforming mold 110 does not interfere with lapping evenly.

The lapping part 119 is configured by attaching a thin sheet of paper sandpaper having a thickness of 0.5 mm or less, and the roughness of the paper sandpaper may vary depending on the roughness required by the thermoforming mold 110, so it is not specific to any one .

In the present invention, the diameter of the wrapper 115 is 25 mm and the height of the shape maintaining part 117 and the deforming part 118 is 9 mm, respectively, but it may vary depending on the type, size, roughness, etc. of the thermoforming mold 110 to be wrapped. It may be possible, so the dimensions are not limited.

The state of use of the lapping tool for glass thermoforming mold to which the technology of the present invention is applied as described above is as follows.

The thermoforming mold 110 to be wrapped is seated on the bed 109 of the lapping machine 101, and the tool body 106 with the wrapper 115 attached to the mounting shaft 102 is coupled, and then the bed 109 is mounted. By operating the shaft 102, it continuously moves in the X and Y directions so that the lapping part 119 attached to the lowermost end of the wrapper 115 rubs against the surface of the thermoforming mold 110, and the surface of the thermoforming mold 110 is Make it possible to achieve illuminance as desired.

In the process of performing the lapping as described above, the shape maintaining unit 117 is stably held to prevent the rapper 115 from being deformed with respect to the large shock and vibration generated during the three-dimensional movement, and the shape is stably maintained. The deformable part 118 attached to the lower side of the shape maintaining part 117 is deformed to fit the shape of the surface of the thermoforming mold 110 and is in close contact with the thermoforming mold by uniform pressure.

The deformable portion 118 is deformed to fit the surface shape of the thermoforming mold 110 is made of a low-density sponge material and is connected to the thermoforming mold 110 and is shaped to match the shape of the thermoforming mold 110 when pressed. This can be transformed.

Then, the thin lapping part 119 attached to the lower end of the deformable part 118 rubs against the thermoforming mold 110 to maintain the surface to a desired roughness, and the abrasion of the lapping part 119 during the lapping process. Or, if there is damage, replace it with a new one and perform the work.

As described above, when the outer surface of the thermoforming mold 110 is closely adhered regardless of the shape and shape, the desired roughness can be obtained by friction with a uniform pressure, and the working time is greatly reduced because the lapping is performed mechanically. Not only can it be reduced, but it also has the advantage of improving the quality of the thermoforming mold by continuously maintaining an excellent and uniform state, as well as improving the quality of the 3D glass molded through this.

100; Lapping tool for glass thermoforming mold
105; toolbar
110; thermoforming mold
115; rapper
117; shape maintaining part
118; deformation part
119; lapping department

Claims (3)

a tool body 106 in which a mounting tip 105 is protruded from the upper center so as to be mounted on a mounting shaft 102 provided in the lapping machine 101;
a wrapper attachment surface 116 protruding from the bottom surface of the tool body 106;
Lapping for glass thermoforming mold, characterized in that it includes a wrapper 115 for wrapping the surface of the thermoforming mold 110 attached to the wrapper attachment surface 116 and seated on the bed 109 of the wrapping machine 101 tool. as in claim 1;
The wrapper 115 includes: a shape maintaining part 117 positioned at the top and attached to the wrapper attachment surface 116 and an adhesive means to maintain its shape;
A deformable part 118 that is located below the shape maintaining part 117 and is connected to the thermoforming mold 110 during the lapping process and allows it to be freely deformed according to the shape and shape of the thermoforming mold 110 during the lapping process. )Wow;
A lapping tool for glass thermoforming mold, characterized in that it includes a lapping part (119) attached to the lower end of the deformable part (118) to be in close contact with the thermoforming mold (110) to perform lapping. 3. The method of claim 2;
The shape maintaining part 117 is composed of urethane foam;
the deformable part 118 is made of a sponge;
The lapping part 119 is a lapping tool for a glass thermoforming mold, characterized in that it is a paper sandpaper of a thin plate.

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