WO2015072656A1

WO2015072656A1 - Surface treating apparatus

Info

Publication number: WO2015072656A1
Application number: PCT/KR2014/008204
Authority: WO
Inventors: 최병근; 이영진
Original assignee: 최병근; 이영진
Priority date: 2013-11-15
Filing date: 2014-09-02
Publication date: 2015-05-21
Also published as: KR101532284B1; KR20150056186A

Abstract

The present invention provides a surface treating apparatus comprising: a support plate (10) that has a fixing rod (112) vertically protruding therefrom and is attached to an end portion of a working arm (30); a yoke (120) that has an insertion tube (122) on one side surface of the central portion thereof and is rotatably coupled to the support plate (110), the fixing rod (112) being inserted into the insertion tube (122); a head (130) having opposite end portions hingedly coupled to respective end portions of the yoke (120) and a rotating plate 132 placed therebelow; a rotating guide (140) having a coupling piece (142) on one side thereof and a receiving body (144) on the other side thereof, wherein the coupling piece is coupled to the outer surface of the insertion tube (122) of the yoke (120) through a bolt, the receiving body has a receiving space (145) formed therein, and guide holes communicating with the receiving space (145) are formed on upper and lower sides of the receiving body (144); a spring (150) placed in the receiving space (145) of the rotating guide (140); and a guide rod (160) having one end fixed to one side of the fixing rod (112) of the support plate (110) and the other end extending and protruding through the upper and lower side guide holes of the fixing plate (140).

Description

Surface treatment device

The present invention relates to a surface treatment apparatus, and more particularly, when the work head provided in the surface treatment apparatus is out of position due to friction with the workpiece or the shape of the curvature of the workpiece during sanding or polishing. The present invention relates to a surface treatment apparatus in which a sanding or polishing operation on a workpiece can be performed within a desired depth and range by returning to a position.

Sanding work and polishing work should be done in advance in order to perform surface treatment work such as painting or gloss on a work made of a material such as metal or reinforced plastic. Conventionally, this work has been carried out using a device in which a grinder is mounted on a disc that rotates at a constant speed by the driving force of the drive motor. In general, such a device can be driven only in the horizontal direction in which the grinder is mounted. There was a disadvantage that can not be used for the surface treatment of the workpiece having a constant curvature.

To this end, the applicant has proposed a technology such as Korean Patent No. 1296569 and Korean Patent No. 1269303. Each of these techniques commonly includes a work arm rotatably provided in the body and a rotating plate provided at the end of the work arm so that the work arm appropriately responds to any curvature of the work piece so that it can be surface treated. Makes it easy to perform.

In particular, in the case of the Republic of Korea Patent No. 1269303, as shown in Figure 6, the yoke 10 between the work arm (not shown) end that is rotatably installed at an angle and the work head 20 is mounted with the rotating plate 30 Although the yoke 10 is separated into a yoke portion 12 supporting the work head 20 and a fixed portion 18 fixedly coupled to the work arm end, the yoke portion 12 is fixed portion 18 It is configured to rotate at a certain angle with respect to). This is to allow the work head 20 to more easily adapt to the curvature of the workpiece to perform the surface treatment work.

However, such a configuration may be smoothly performed as originally intended when the curvature of the workpiece is gently changed, but may not be used for surface treatment of workpieces having a sudden change in curvature or various curvatures. There was an unsuitable problem. This is because the surface treatment should be carried out in a state where the rotating plate rotating at high speed is in close contact with the surface of the workpiece. If the curvature of the workpiece changes rapidly or the workpiece has various curvatures, the yoke part This is because it rotates little by little with respect to the fixed part, and thus, a specific part of the rotating plate may not come into close contact with the surface of the workpiece, thereby causing a phenomenon in which the surface treatment is not smoothly performed.

The present invention has been proposed to solve the above problems, the present invention is an apparatus capable of performing a surface treatment operation while maintaining the state in which the work head is in close contact with the surface of the workpiece even if the workpiece has any curvature. The purpose is to provide.

The present invention and the housing 10 is installed to be movable a predetermined distance along the guide rail 12 provided in the lower to achieve the above object; A rotating disc 26 provided on one side of the front surface and mounted to the housing 10; A working arm 30 protruding from the rotating disk 26 of the body 20 to a predetermined length; A support plate 110 provided with a fixed rod 112 projecting vertically and mounted at an end of the working arm 30; A yoke 120 provided at one side of the central part with an insertion tube 122 into which the fixing rod 112 is inserted and rotatably coupled to the support plate 110; Both ends are hinged to each end of the yoke 120, the lower portion of the head 130 is provided with the rotating plate 132; One side is provided with a coupling piece 142 that is bolted to the outer surface of the insertion tube 122 of the yoke 120, the other side is provided with a receptor 144 having a receiving space 145 is provided with the receptor 144 Rotation guides 140 are formed in each of the upper and lower sides of the guide hole in communication with the receiving space 145; A spring 150 placed in the accommodation space 145 of the rotation guide 140; One end is fixed to one side of the fixing rod 112 of the support plate 110, the other side is extended to guide rods 160 protruding through the upper and lower guide holes of the fixing plate 140; What is included is made into the technical feature.

The head 130, an extension piece 172 protruding left and right from the upper working head 130, one end is coupled to each of the extension pieces 172 and the other end length adjustment piece 174 extending downward; The head stopper 170 may be formed of an elastic body 176 provided at each end of the length adjusting piece 174.

The length adjusting piece 174 may be made of a bolt.

Both ends of the container 144 of the rotation guide 140 may be opened, and both ends of the opened container 144 may be closed by a cap 148.

The present invention is configured so that the yoke for supporting the head is rotated at an angle with respect to the end of the working arm by restoring a spring placed inside the rotation guide and a guide rod projecting through the rotation guide directly with the spring. In addition, even if the surface curvature of the workpiece changes in various directions from side to side, the rotating plate of the head can be closely adhered to the surface of the workpiece.

In addition, the present invention is equipped with a head stopper on one side of the head to prevent the head portion from rotating at a certain angle with respect to the yoke, so that even if the surface curvature of the workpiece changes in the vertical direction during the operation process, the rotating plate of the head It can be in close contact with the surface of the workpiece.

1 is a schematic overall configuration diagram of a surface treatment apparatus according to the present invention.

2 is a coupling relationship between the working head and the working arm in the surface treatment apparatus according to the present invention.

Figure 3 is a schematic coupling configuration of the guide and the rotation guide of the working head in the surface treatment apparatus according to the present invention.

Figure 4 is a schematic operation configuration diagram between the rotation guide, the spring, the guide rod in the working head according to the present invention.

5 is a schematic operational configuration of the head stopper in the working head according to the present invention.

Figure 6 is a schematic configuration diagram of a work head in a conventional surface treatment apparatus.

Preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In describing the embodiments of the present invention, a detailed description of matters that are not directly related to the technical features of the present invention or that are obvious to those skilled in the art will be omitted.

First of all, the present invention relates to a surface treatment apparatus for sanding or polishing a surface portion of a workpiece made of a material such as metal or reinforced plastic, and the surface treatment apparatus as described in FIG. 10, the body 20, the working arm 30, and the working head 100 may be formed.

The housing 10 is installed to be movable at a predetermined distance along the guide rail 12 provided at a lower portion thereof, and various control devices, a driving motor, a pump, and the like are provided therein.

The body 20 is mounted on the housing 10, and is rotatably installed at an angle with respect to the housing 10 using the drive shaft 22. The rotating disc 26 is mounted on one side of the front side of the body 20. The rotating disc 26 is responsible for the rotation of the working arm 30, the drive means is installed inside the body.

The working arm 30 is configured to protrude to a predetermined length from the rotation disk 26 of the body 20, the rotation disk 26 can be rotated at a predetermined angle in accordance with the operation. One side of the working arm 30 is provided with a working head 100, the working arm itself is configured to be moved up and down by a predetermined height by the drive means not shown.

As illustrated in FIG. 2, the work head 100 may include a yoke 120 coupled to the support plate 110, and a head 130 supported by the yoke 120.

The support plate 110 is a portion mounted to the end of the working arm 30, the center portion is provided with a fixing rod 112 that protrudes vertically. The support plate 110 is rotated together when the working arm 30 rotates, preferably made of a metal material of a predetermined thickness.

The yoke 120 is a part for supporting the head 130, the insertion tube 122 is provided at one side of the central portion. The insertion tube 122 is a portion into which the fixing rod 112 of the support plate 110 is inserted. Fixing rod 112 is coupled by a separate fastening means in a state inserted into the insertion tube 122, it is preferable that the yoke 120 is coupled in a state capable of freely rotating with respect to the support plate 110. This is to allow the head 130 to properly correspond to the surface curvature of the workpiece.

That is, when the working arm 30 rotates by a predetermined angle as necessary, the support plate 110 mounted on the end of the working arm 30 also rotates together, and the yoke 120 is freely rotated with respect to the support plate 110. This is because the head 130 supported by the yoke 120 can be easily adapted to the surface curvature of the workpiece, which is changed in the course of work. The yoke may be made of a metal material of a certain thickness.

The head 130 is a part in which work on the workpiece is performed, and a rotating plate 132 is provided under the head 130. The rotating plate 132 is a portion that rotates at a constant speed when high pressure air is injected by an air supply apparatus (not shown), and a polishing pad or the like is attached to a lower portion thereof. Both ends of the head 130 may be hinged to each end of the yoke 120.

On the other hand, as described in the prior art, when the yoke 120 is coupled in a state that can be freely rotated with respect to the support plate 110, the head 130 provided in the yoke 120 to avoid the change in the surface treatment operation process Although there is an advantage that can be easily adapted to the surface curvature of the workpiece, the head 130 may not be in close contact with the surface of the workpiece. This may occur when the surface curvature of the workpiece suddenly changes or the surface curvature of the workpiece has various curvatures, especially when the surface curvature of the workpiece is inclined at an angle to the left and right.

In this case, since the rotating plate 132 is not closely adhered to the surface of the workpiece, and a specific portion of the rotating plate is separated from the surface of the workpiece, the surface treatment for the workpiece is not performed as intended. To this end, the present invention, as disclosed in each of Figs. 2 and 3 so that the work head 100 maintains a predetermined position in the working process, the rotation guide 140, the spring 150, and the guide rod 160 The structure provided is proposed.

The rotation guide 140 is characterized in that the coupling piece 142 is provided on one side and the receptor 144 is provided on the other side. The coupling piece 142 is a portion that is coupled to the outer surface of the insertion tube 122 of the yoke 120 by a separate fastening means such as a bolt, it is preferably made of a configuration corresponding to the shape of the insertion tube 122. . An accommodation space 145 having a predetermined size is provided in the container 144, and guide holes communicating with the accommodation space 145 are formed in each of the upper and lower sides. Although only the upper guide hole 146 is disclosed in FIG. 3, the lower guide hole having the same configuration is formed in the lower side of the receiver. Rotation guide may be made of a metal material of a certain thickness.

The spring 150 may be formed of a conventional spring having a restoring force, and is placed in the receiving space 145 of the rotation guide 140. The present invention proposes a configuration in which both ends of the container 144 of the rotation guide 140 are opened, and both ends of the opened container 144 are closed by the cap 148 for easy settlement of the spring 150. In this case, the one side cap of the container may be inserted into the spring receiving space while the one side cap of the container is sealed, and then the other opening of the container may be sealed with the other cap.

One side of the guide rod 160 is fixed to one side of the fixing rod 112 of the support plate 110, and the other side thereof extends to protrude through the upper and lower guide holes of the rotation guide 140. The spring 150 is built in the receiving space 145 of the rotation guide 140, but since the spring is typically made of a spiral coil, the guide rod 160 can be inserted through a gap between the central portions of the coil. have.

Accordingly, the rotation guide 140 of the working head according to the present invention rotates with the yoke 120, the guide rod 160 is fixed to the support plate 110. On the other hand, the guide rod has a bolt structure in the drawing, but this is only an example, it can be applied to a variety of structures, such as forming a screw thread only fixed to one side of the fixed rod.

An operation configuration of the work head having the above configuration will be described with reference to FIGS. 1 and 4, respectively.

First, when the workpiece has a constant curvature, when the rotating disk 26 of the body 20 rotates at a predetermined angle, the working arm 30 mounted on the rotating disk 26 also rotates together. Accordingly, the rotary plate 132 portion of the work head 100 is strongly adhered to the surface of the workpiece, and when the high pressure air is supplied, the rotary plate 132 rotates at a high speed while being in close contact with the surface of the workpiece, Work on the water surface begins.

If the surface curvature of the workpiece is changed during the surface treatment operation by the rotating plate 132, the work head 100 (more specifically, the rotating plate 132) is in close contact with the surface of the workpiece. The workhead 100 suitably adapts to the surface curvature of the changing workpiece. That is, the yoke 120 of the work head 100 rotates in a specific direction (① direction or ② direction) according to the surface curvature of the workpiece based on the support plate 110. ① Direction may occur when the surface curvature of the workpiece is inclined gently to the right. ② Direction may occur when the surface curvature of the workpiece is gently inclined to the left.

When the yoke 120 rotates in a specific direction, the rotation guide 140, which is fixed at one side to the insertion tube 122 of the yoke 120, also rotates in a specific direction, while the support rod 112 of the support plate 110 is rotated. Guide rod 160 is fixed to one side is fixed to the original position (① position or ② position).

On the other hand, since the guide rod 160 is in contact with the spring in a state passing through the central portion of the spring 150, which is embedded in the receiving space 145 of the rotation guide 140, the rotation guide 140 in a specific direction Even though the guide rod 160 adheres to its original position even when it rotates, each portion of the spring 150 positioned on the left and right of the guide rod based on the guide rod 160 exerts a restoring force opposite to the rotation direction of the rotation guide 140. .

That is, when the rotation guide 140 rotates in the ① direction together with the yoke 120, the spring 150 acts in the ① ′ direction because the guide rod 160 is fixed at the original ① position together with the support plate 110. The restoring force acts in the direction of restoring the yoke 120 to its original position, and when the rotation guide 140 rotates in the direction of ② together with the yoke 120, the guide rod 160 is original ② together with the supporting plate 110. Since it is fixed in position, the spring 150 acts in the direction of ② 'and acts in the direction of restoring the yoke 120 to its original position.

Accordingly, when the surface curvature of the workpiece is changed while the work is in progress, the elastic body 150 generates the restoring force in the opposite direction even if the yoke 120 rotates at a predetermined angle with respect to the support plate 110. By acting to return the yoke 120 to its original position, the rotating plate specific portion of the work head 100 mounted on the yoke 120 does not deviate from the surface of the workpiece by changing the surface curvature of the workpiece. It can maintain the state and smoothly perform the surface treatment work.

In addition, in the related art, since the work head 20 is hinged to one side end of the yoke 10 as shown in FIG. 6, when the surface curvature of the workpiece gently changes in the vertical direction, the work head ( 20 is freely rotatable with respect to the yoke 10 by a predetermined angle. However, in this case, especially when the surface curvature of the workpiece is formed to be inclined upward, the work head 20 is lifted upward from the hinge coupling portion.

However, since the work head itself has a certain amount of weight, if the work head is lifted more than a certain angle, the front part of the rotating plate 30 is separated from the surface of the workpiece, so that the surface treatment work cannot be performed smoothly. there was. To this end, the present invention proposes a head stopper that prevents the head from rotating at least a certain angle with respect to the yoke from the hinge coupling portion.

As disclosed in each of FIGS. 2 and 5, the head stopper 170 according to the present invention may include an extension piece 172, a length adjusting piece 174, and an elastic body 176.

The extension piece 172 is a portion protruding left and right from the top of the head 130, each side of the extension piece is fixedly coupled to the upper one side of the head. The extension piece may be made of a metal material of a certain thickness.

The length adjusting piece 174 is a portion that is coupled to the extension piece 172, one end is coupled to each of the extension pieces 172 and the other end is extended downward to protrude. The length adjusting piece 174 is preferably configured to adjust the length by a predetermined interval in the vertical direction, for this purpose, the present invention proposes a case in which the length adjusting piece is made of a bolt structure.

That is, when the bolt is rotated at an angle in the state of loosening the nut (not shown) fastened to the upper portion of the bolt in the drawing, the bolt is moved up or down a certain distance according to the direction of rotation, so that Δh is It will change. However, whether the length adjustment is done with bolts or other configurations such as screws may be optional.

The elastic body 176 is provided at the end of the length adjusting piece 174, and moves a predetermined distance upward or downward with the length adjusting piece in accordance with the operation of the length adjusting piece 174. As described in the drawing, the elastic body 176 is preferably adjusted in height so as to maintain a state spaced apart from the front upper end of the yoke 120 by a predetermined distance. The spacing between the elastic body and the yoke limits the range in which the head 130 rotates with respect to the hinged portion of the yoke 120, which depends on the surface curvature of the workpiece, in particular on the vertically varying surface curvature. Can be. The elastic body may be made of a conventional resin material.

An operation configuration of the head stopper 170 having the above configuration will be described with reference to FIGS. 2 and 5.

First, in consideration of the surface curvature of the workpiece to adjust the length adjusting piece 174 of the head stopper 170 in the state where the elastic body 176 is positioned so as to be spaced apart at a predetermined interval with respect to the front upper side of the yoke 120. Process the workpiece surface. The spacing is adapted to the vertical maximum curvature of the workpiece.

When the surface curvature of the workpiece is gradually changed vertically in the course of the operation, the head 130, which is mounted on the rotating plate 132 hinged to the yoke 120 is changed from the hinge coupling site It adapts to the surface curvature of the workpiece and rotates little by little (③).

If the surface curvature of the workpiece continues to change vertically, the head 130 will continue to rotate according to the hinged portion accordingly, if the head 130 rotates from the hinged portion, the elastic body 176 is As it moves relatively downward, the distance between the one upper upper portion of the elastic body 176 and the yoke 120 gradually decreases, and finally, the elastic body 176 is in contact with the upper upper one front portion of the yoke 12, and thus the head 130. Will no longer rotate and will remain in that state.

That is, when the surface curvature of the workpiece slowly changes vertically, the surface treatment operation is appropriately adapted to the surface curvature of the workpiece to be changed while the head 130 rotates little by little from the hinge coupling portion of the yoke 120. In this case, the rotatable range is limited to a certain angle (vertical maximum curvature of the workpiece) to prevent a specific portion (front part) of the rotating plate 132 from deviating from the workpiece surface.

In the above description, but limited to the preferred embodiments of the present invention, but this is only an example, the present invention is not limited to this may be modified and carried out in various ways, and further technical features based on the technical spirit disclosed It will be apparent that it can be implemented in addition.

Claims

A housing 10 installed to be movable at a predetermined distance along the guide rail 12 provided below;

A rotating disc 26 provided on one side of the front surface and mounted to the housing 10;

A working arm 30 protruding from the rotating disk 26 of the body 20 to a predetermined length;

A support plate 110 provided with a fixed rod 112 projecting vertically and mounted at an end of the working arm 30;

A yoke 120 provided at one side of the central part with an insertion tube 122 into which the fixing rod 112 is inserted and rotatably coupled to the support plate 110;

Both ends are hinged to each end of the yoke 120, the lower portion of the head 130 is provided with a rotating plate (132);

One side is provided with a coupling piece 142 that is bolted to the outer surface of the insertion tube 122 of the yoke 120, the other side is provided with a receptor 144 having a receiving space 145 is provided with the receptor 144 Rotation guides 140 are formed in each of the upper and lower sides of the guide hole in communication with the receiving space 145;

A spring 150 placed in the accommodation space 145 of the rotation guide 140;

One end is fixed to one side of the fixing rod 112 of the support plate 110, the other side is extended to guide rods 160 protruding through the upper and lower guide holes of the fixing plate 140;

Surface treatment apparatus comprising a.
The method of claim 1,

The head 130, an extension piece 172 protruding left and right from the upper working head 130, one end is coupled to each of the extension pieces 172 and the other end length adjustment piece 174 extending downward; Surface treatment apparatus characterized in that the head stopper 170 made of an elastic body 176 is provided at each end of the length adjusting piece (174).
The method of claim 2,

The length adjusting piece 174 is a surface treatment apparatus, characterized in that made of a bolt.
The method of claim 1,

Both ends of the container 144 of the rotation guide 140 is opened, the both ends of the opened container 144 is closed by a cap (148).