KR20170133086A - Sanding and polishing apparatus of acrylic board using cnc function - Google Patents

Abstract

The present invention relates to a sanding and polishing apparatus for processing an acrylic plate using a CNC function. According to one embodiment of the present invention, the sanding and polishing apparatus for processing an acrylic plate using a CNC function comprises: a main body for fixing an acrylic plate using a vacuum plate; a scan unit for scanning the acrylic plate while moving on an upper portion of the main body using processing information of the acrylic plate so as to generate scan information of the acrylic plate; a driving unit for cutting, sanding, or polishing a surface of the acrylic plate while moving on the upper portion of the main body; and a control unit for driving at least one among a cutter, a sanding machine, and a polishing machine of the driving unit according to the scan information of the acrylic plate. Accordingly, sanding and polishing operations can be automatically performed at the same time on the surface of the acrylic plate, thereby improving working speeds and reducing processing costs.

Description

TECHNICAL FIELD [0001] The present invention relates to a sanding and polishing apparatus for an acrylic plate using a CNC function,

The present invention relates to a sanding and polishing apparatus for use in an acrylic plate processing using a CNC function, and more particularly, to a technique capable of performing sanding and polishing processing on a surface of an acrylic plate at once.

In order to process the acrylic, the acrylic plate is cut and the desired type of product is made. At this time, the cut surface becomes opaque and is turned to be transparent again by using oxygen and LPG to polish it under heating, or to process the cut surface using a mirror head with diamond head.

However, when the surface of the acrylic plate is polished by heating, the acrylic is exposed to a high temperature, and yellowing or cracking occurs over time. When the mirror is used, the surface of the acrylic is uneven, And it is necessary to improve them.

Among the conventional techniques, Korean Utility Model Registration No. 20-0320336 (published on July 22, 2003) discloses a "vertical type electric polisher" in which a plurality of kinds of glossy pads And it is a technical feature that the workpiece is polished to be processed at the edge of the work material of the multi-stage acrylic plate, the bakelite plate, or the wood and the bar.

However, the above-described conventional technique has a limitation in that time and cost increase because an operator manually uses the machined surface of the acrylic plate in contact with the polishing pad, and the machining quality varies depending on the skill of the operator.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method and apparatus for automatically processing a sanding operation and a polishing operation simultaneously on a surface of an acrylic plate and fixing the acrylic plate using a vacuum plate, It is possible to keep the working environment clean by suctioning dust generated during machining. It is possible to lower the heat generated when sanding and polishing by spraying air, and to judge whether the emboss pattern formed on the acrylic plate surface is defective through vision inspection And to provide a sanding and polishing apparatus for an acrylic plate processing using a CNC function capable of checking the transparency of an acrylic plate and determining the gloss state.

A polishing apparatus for sanding and polishing an acrylic plate using a CNC function according to an embodiment of the present invention includes a main body for fixing an acrylic plate using a vacuum plate, A scan unit for scanning the acrylic plate to generate scan information of the acrylic plate; a driving unit for cutting, sanding, or polishing the surface of the acrylic plate while moving the upper portion of the main body; And a control unit for driving at least one of the cutter, the sanding unit, and the polisher of the driving unit.

In addition, the vacuum plate adsorbs the acrylic plate using an adsorption plate, and a coating agent represented by the following Formula 1 on the surface of the adsorption plate has a vaporization temperature of 180 and is heated to 670 to a pressure of 10 to 50 mTorr And may be vacuum deposited on the outer surface of the adsorption plate at a thickness of 0.3 to 1.

[Chemical Formula 1]

(In the formula (1), n represents an integer other than 0)

Further, the apparatus may further include an illumination unit for outputting illumination at a lower portion of the acrylic plate, wherein the controller obtains a transmittance through which the illumination of the illumination unit transmits the acrylic plate to determine whether the gloss of the acrylic plate is defective.

The apparatus may further include an intake and exhaust unit disposed at one side of the main body to suck dust generated during the processing of the acrylic plate, or to output a predetermined wind force to the acrylic plate.

The apparatus may further include a vision inspection unit that photographs an image of the surface of the acrylic plate, and performs binary processing on the photographed image to check whether the engraved pattern formed on the surface of the acrylic plate is defective.

As a result, the sanding operation and the polishing operation can be simultaneously performed on the surface of the acrylic plate, thereby improving the working speed and reducing the processing cost.

In addition, it is possible to minimize the damage of the acrylic plate during the operation by fixing the acrylic plate using the vacuum plate.

In addition, it is possible to keep the working environment clean by sucking dust generated during processing.

In addition, air can be sprayed onto the surface of the acrylic plate to lower the heat generated during sanding and polishing.

In addition, it is possible to judge whether or not the engraved pattern formed on the surface of the acrylic plate is defective through vision inspection.

Further, the transparency of the acrylic plate can be inspected to grasp the gloss state.

1 is a configuration diagram of a sanding and polishing apparatus for acrylic plate processing using a CNC function according to an embodiment of the present invention;
FIG. 2 is an exemplary view for explaining a construction of a sanding and polishing apparatus for use in an acrylic plate processing using a CNC function according to FIG. 1,
FIG. 3 is an exemplary view for explaining that the main body of the polishing apparatus for sanding and polishing for acrylic plate processing using the CNC function shown in FIG. 1 fixes the acrylic plate with the vacuum plate,
FIG. 4 is an exemplary view for explaining that the sanding and polishing apparatus for acrylic plate processing using the CNC function according to FIG. 1 measures the translucency using an illumination unit;
FIG. 5 is an exemplary view for explaining that a sanding and polishing apparatus for acrylic plate processing using the CNC function according to FIG. 1 obtains a vision image of an engraved pattern using a vision inspection unit;
FIG. 6 is an exemplary diagram for explaining the determination of a bad pattern in a binary image through the vision inspection unit according to FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms used are terms selected in consideration of the functions in the embodiments, and the meaning of the terms may vary depending on the user, the intention or the precedent of the operator, and the like. Therefore, the meaning of the terms used in the following embodiments is defined according to the definition when specifically defined in this specification, and unless otherwise defined, it should be interpreted in a sense generally recognized by those skilled in the art.

FIG. 1 is a block diagram of a sanding and polishing apparatus for use in an acrylic plate processing using a CNC function according to an embodiment of the present invention. FIG. 2 is a cross- And Fig.

1 and 2, a sanding and polishing apparatus 100 for an acrylic plate using a CNC function according to an embodiment of the present invention includes a main body 110, a scan unit 120, a driving unit 130, 140).

The main body 110 fixes the acrylic plate 10. A driving unit 130 is formed on the upper portion of the main body 110. The driving unit 130 moves the upper portion of the acrylic plate 10 along the x axis, the y axis, and the z axis while moving the cutter, . The vacuum plate 111 of the main body 110 may have an acrylic plate 10 mounted thereon. In this case, the processed shape of the acrylic plate 10 may be a flat plate, but it is not limited thereto, and it may be a three-dimensional shape in which a curved surface is formed. The main body 110 can move the acrylic plate 10 in the x-axis, the y-axis, and the z-axis, and can move the acrylic plate 10 at a predetermined angle from the reference plane.

The main body 110 can fix the acrylic plate 10 using the vacuum plate 111 and move the acrylic plate 10 along the x axis, the y axis, and the z axis. This is to minimize the impact of the surface of the acrylic plate 10. In this case, a vacuum cup is formed on the main body 110 so that the acrylic plate 10 is separated from the acrylic plate 10 by separation. The main body 110 can readjust the height of the acrylic plate 10 from the reference plane while fixing the acrylic plate 10 using the vacuum plate 111. [ The main body 110 aligns the reference surface with the surface of the acrylic plate 10, thereby minimizing the error.

The scanning unit 120 scans the acrylic plate 10 while moving the upper portion of the main body 110 using the processing information of the acrylic plate 10 to generate scan information of the acrylic plate 10. [ The scanning unit 120 can determine the position of the acrylic plate 10 using a near-infrared ray sensor. The scan information generated through the scan unit 120 serves to set a reference position so that the driving unit 130, which will be described later, can perform processing. The scan information may include coordinate information of the acrylic plate 10 and vector information. It is also possible to re-scan the position of the scanning unit 120 as the acrylic plate 10 moves.

The driving unit 130 sandwiches the surface of the acrylic plate 10 while moving the upper part of the main body 110. For example, the driving unit 130 can cut the acrylic plate 10 by mounting the cutter 131-1 on the head 131. [ In addition, the sanding process can be performed by sanding the surface of the head 131 with a sanding machine 131-2 using sandpaper having predetermined uniformity. It is also possible to carry out the secondary sanding process using the more uniform sandpaper after the primary sanding process. The sanding unit 131-2 of the driving unit 130 may also form a predetermined pattern by discharging uniform sand particles through nozzles in addition to sandpaper by a blasting method. This is for forming a specific pattern on a part of the acrylic plate 10, and it is also possible to opaque the surface of the acrylic plate 10 by a sand blasting method according to a predetermined pattern.

The driving unit 130 polishes the surface of the acrylic plate 10 while moving the upper part of the main body 110. For example, the driving unit 130 can polish the surface of the acrylic plate 10 by using a polishing agent and a melt by mounting a polisher 131-3 on the head 131. [ The driving unit 130 may repeat the polishing process so that the acrylic plate 10 has predetermined gloss. The driving unit 130 may selectively perform a luster process by separating the opaque portion from the other regions, where the engraved pattern is formed on the surface of the acrylic plate 10. For example, it is also possible to apply a luster treatment only to the other areas, without applying a luster treatment to the areas where the engraved pattern is formed on the surface of the acrylic plate 10 or the opaque areas are treated.

The control unit 140 drives the driving unit 130 according to the scan information of the acrylic plate 10. For example, a CNC (computer numerical control) method is used to set a part to be processed by using the scan information of the acrylic plate 10 obtained from the scan part 120 and the machining information of the acrylic plate 10, A sanding area and a gloss area can be set. The control unit 140 acquires coordinate information and vector information of the acrylic plate 10 according to the scan information of the acrylic plate 10 acquired from the scan unit 120 of the acrylic plate 10, The machining speed, the machining direction and the machining time of the cutter 131-1, the sanding machine 131-2 and the polisher 131-3 to be mounted on the workpiece W can be set differently.

The control unit 140 may operate two or more movements of the cutter 131-1, the sanding unit 131-2, and the polisher 131-3 to be mounted on the head 131 of the drive unit 130 at the same time , It is also possible to control the timing to operate with a time difference.

FIG. 3 is an exemplary view for explaining how the main body 110 of the polishing apparatus for sandwiching and polishing an acrylic plate using the CNC function shown in FIG. 1 fixes the acrylic plate with the vacuum plate 111.

Referring to FIG. 3, a vacuum plate 111 is formed on a main body 110 of a sanding and polishing apparatus 100 for an acrylic plate processing using a CNC function to fix the lower portion of the acrylic plate 10. The vacuum plate 111 can fix the acrylic plate 10 using the attracting plate 112. For example, the adsorption plate 112 may be formed of an EPDM rubber material having a coating layer formed by vacuum-depositing poly-para-xylylene on the surface thereof. This is to avoid leaving rubber marks on the acrylic plate. Here, the polyparaxylyene is represented by Chemical Formula 1, has a vaporization temperature of 180, is heated to 670 and vacuum-deposited on the outer surface of the adsorption plate 112 to a thickness of 0.3 to 1 at a pressure of 10 to 50 mTorr, .

In formula (1), n represents a nonzero integer.

The vacuum plate 111 can be pneumatically or hydraulically driven, and the vacuum plate 111 can vary the height. The main body 110 aligns the height of the reference surface in a state where the acrylic plate 10 is fixed by the vacuum plate 111. In this case, the ascending and descending portion 113 is connected to the lower portion of the vacuum plate 111, and the height of the ascending and descending portion 113 can be adjusted by a motor driving method.

FIG. 4 is an exemplary view for explaining that the sanding and polishing apparatus for acrylic plate processing using the CNC function according to FIG. 1 measures the translucency using an illumination unit.

Referring to FIG. 4, the sanding and polishing apparatus 100 for acrylic plate processing using the CNC function according to the embodiment of the present invention may further include an illumination unit 150. The illumination unit 150 is formed on an upper portion of the main body 110 to output illumination from the lower portion of the acrylic plate 10. In this case, the intensity and brightness of the illumination output from the illumination unit 150 may vary depending on user settings. The degree of gloss can be grasped by acquiring the translucency, which is the degree to which the light source output from the illumination unit 150 transmits the acrylic plate 10. For example, in the region of the acrylic plate 10 where the transmittance is low, it is determined that the cutting process, the sanding process, or the gloss process is incomplete, and a defective signal can be output.

Meanwhile, the polishing apparatus 100 for sanding using an CNC function according to an embodiment of the present invention may further include an intake / exhaust unit 160. The intake and exhaust unit 160 is formed on one side of the main body 110 and sucks dust generated from the surface of the acrylic plate 10 when the driving unit 130 is driven. The intake / exhaust unit 160 sucks dust by vacuum suction and stores the dust, thereby minimizing contamination due to fine dust or the like.

In addition, the intake and exhaust unit 160 blows wind of a predetermined wind force to the surface of the acrylic plate 10 to lower the heat generated when the acrylic plate 10 is processed. This is to prevent the shape of the acrylic plate 10 from being partially deformed by cutting, sanding or polishing and to prevent the operator from being injured in the process of transferring the acrylic plate 10.

FIG. 5 is an exemplary view for explaining that a polishing apparatus for polishing an acrylic plate using a CNC function according to FIG. 1 obtains a vision image of an engraved pattern using a vision inspection unit, FIG. 6 is a view for explaining a vision inspection unit FIG. 2 is a diagram illustrating an example of determining whether a pattern of an engraved pattern is defective with a binary image. FIG.

Referring to FIGS. 5 and 6, the polishing apparatus 100 for polishing an acrylic plate using a CNC function according to an exemplary embodiment of the present invention may further include a vision inspection unit 170.

The vision inspection unit 170 photographs an image of the surface of the acrylic plate 10 and performs binary processing on the photographed image to check whether the engraved pattern 11 formed on the surface of the acrylic plate 10 is defective. This is to judge whether the engraved pattern 11 is defective when the engraved pattern 11 is formed on the surface of the acrylic plate 10 by the sanding process. The vision inspection unit 170 generates a binary image 600 by binarizing the pixel values of the vision image for the engraved pattern 11 on the basis of a preset threshold value. Next, the vision inspection unit 170 sets an inspection object region for the generated binary image 600, and compares the set inspection object region with predetermined reference region information. 5 (a) shows a normal binary image, and (b) shows a poor binary image. Through this process, it is possible to determine whether the engraved pattern 11 is defective or not.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, Therefore, the present invention should be construed as a description of the claims which are intended to cover obvious variations that can be derived from the described embodiments.

10: Acrylic plate
11: engraved pattern
100: Polishing device for sanding
110:
111: Vacuum plate
112: attraction plate
113:
120:
130:
131: Head
131-1: Cutter
131-2: Sanding machine
132-3: Polisher
140:
150:
160: Suction /
170: vision checker
600: binary image

Claims (5)

A main body for fixing the acrylic plate using a vacuum plate;
A scan unit for scanning the acrylic plate while moving the upper portion of the main body using the processing information of the acrylic plate to generate scan information of the acrylic plate;
A driving unit for cutting, sanding or polishing the surface of the acrylic plate while moving the upper part of the main body; And
And a controller for driving at least one of a cutter, a sanding machine, and a polisher of the driving unit according to scanning information of the acrylic plate. The method according to claim 1,
The vacuum plate adsorbs the acrylic plate using an adsorption plate, and a coating agent represented by the following Formula 1 has a vaporization temperature of 180 and is heated to 670 so as to be adsorbed onto the adsorption plate at a pressure of 10 to 50 mTorr. And a thickness of 0.3 to 1 on the outer surface of the substrate.
[Chemical Formula 1]

(In the formula (1), n represents an integer other than 0) The method according to claim 1,
Further comprising a lighting unit for outputting illumination from a lower portion of the acrylic plate,
Wherein,
Wherein the illumination of the illumination unit acquires the translucency of the light transmitted through the acrylic plate to determine whether the gloss of the acrylic plate is defective or not. The method according to claim 1,
And a suction and discharge unit positioned at one side of the main body and sucking dust generated during the processing of the acrylic plate or outputting a predetermined wind force to the acrylic plate. The method according to claim 1,
And a vision inspection unit for photographing an image of the surface of the acrylic plate and performing a binary process on the photographed image to check whether the engraved pattern formed on the surface of the acrylic plate is defective or not. Device.

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