KR20150056186A - A device for restoring position of working head in dealing apparatus - Google Patents

Abstract

The present invention includes a support plate 110 having a vertically protruding fixing rod 112 and mounted on an end of a work arm 30; A yoke 120 having an insertion tube 122 into which the fixing rod 112 is inserted and being rotatably coupled to the supporting plate 110; A head 130 hinged to both ends of the yoke 120 at opposite ends thereof and having a rotating plate 132 at a lower portion thereof; A coupling 144 is provided at one side of the insertion tube 122 of the yoke 120 and a coupling 144 is provided at the other side of the insertion tube 122, A rotation guide 140 having a guide hole communicating with the accommodating space 145; A spring 150 positioned in the receiving space 145 of the rotation guide 140; One end of which is fixed to one side of the fixing rod 112 of the supporting plate 110 and the other side is extended to protrude through upper and lower guide holes of the fixing plate 140; The present invention also provides a working head correcting mechanism for a surface treatment apparatus.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a restoring position of a working head,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work head correcting mechanism for a surface treatment apparatus, and more particularly, to a work head correcting mechanism for a work head, Restoring the working head position of the surface treatment apparatus so that the sanding or polishing operation to the workpiece can be carried out within the intended depth and range by returning it to the correct position when it deviates from the correct position due to the curvature shape of the friction or workpiece ≪ / RTI >

Sanding work and polishing work must be performed in advance in order to perform a surface treatment such as painting or polishing on a workpiece made of a material such as metal or reinforced plastic. Conventionally, such a work has been performed by using a device in which a grinder is mounted on a disk rotating at a constant speed by a driving force of a driving motor. In general, such devices can be used in a manner that a work head on which a grinder is mounted can be driven only horizontally It has a disadvantage that it can not be used for the surface treatment work of an object having a certain curvature.

For this purpose, the present applicant has proposed a technology such as Korean Registered Patent No. 1296569 and Korea Registered Patent No. 1269303. Each of these techniques commonly includes a work arm rotatably provided on the body and a rotating plate provided on the end of the work arm so that the work arm appropriately corresponds to any curvature of the work, To be carried out easily.

6, a yoke 10 is disposed between an end of a work arm (not shown) installed to be rotatable by a predetermined angle and a work head 20 to which a rotary plate 30 is mounted, The yoke 10 is divided into a yoke portion 12 for supporting the working head 20 and a fixing portion 18 fixedly coupled to the working arm end portion so that the yoke portion 12 is fixed to the fixing portion 18 And is rotatable at a predetermined angle with respect to the rotating shaft. This is so that the working head 20 can more easily adapt to the curvature of the workpiece to perform the surface treatment work.

However, in such a configuration, when the curvature of the workpiece changes gently, the surface treatment works smoothly as originally intended. However, when the curvature of the workpiece changes suddenly or the surface treatment of the workpiece having various curvatures There was an inadequate problem. This is because the surface treatment must be performed in a state in which the rotating plate rotating at high speed is in close contact with the surface of the workpiece. If the curvature of the workpiece suddenly changes or the workpiece has various curvatures, And the surface of the rotating plate is not brought into close contact with the surface of the workpiece, so that the surface treatment operation is not performed smoothly.

Korean Patent No. 1269303

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to provide a mechanism capable of performing a surface treatment work while maintaining a state in which the work head is in close contact with the surface of the workpiece, The present invention has been made in view of the above problems.

In order to achieve the above object, according to the present invention, there is provided a sliding door device comprising a housing 10 installed to be movable a predetermined distance along a guide rail 12 provided at a lower portion thereof, A working arm 30 protruding at a predetermined length from the rotating circular plate 26 of the body 20 and a rotary plate 132 are provided on one side of the working arm 30, The surface treatment apparatus includes a working head 100 provided with a fixing rod 112 protruding vertically as a correct position restoring mechanism of the working head 100 so as to be mounted on an end of the working arm 30 (110); A yoke 120 having an insertion tube 122 into which the fixing rod 112 is inserted and being rotatably coupled to the supporting plate 110; A head 130 hinged to both end portions of the yoke 120 at both ends thereof and having the rotation plate 132 at a lower portion thereof; A coupling 144 is provided at one side of the insertion tube 122 of the yoke 120 and a coupling 144 is provided at the other side of the insertion tube 122, A rotation guide 140 having a guide hole communicating with the accommodating space 145; A spring 150 positioned in the receiving space 145 of the rotation guide 140; One end of which is fixed to one side of the fixing rod 112 of the supporting plate 110 and the other side is extended to protrude through upper and lower guide holes of the fixing plate 140; And the present invention is characterized in that it includes the technical features.

The head 130 is provided with an elongated piece 172 projecting laterally from the top of the work head 130 and a length adjusting piece 174 coupled to the elongated piece 172 at one end and extending downward at the other end, And a head stopper 170 made of an elastic body 176 provided at an end of each length adjusting piece 174.

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

Both ends of the receptor 144 of the rotation guide 140 are opened and both ends of the opened receptor 144 can be sealed by the cap 148.

The present invention is configured such that the guide bar protruding through the guide and the spring guided in the guide is brought into direct contact with the spring so that the yoke supporting the head is restored to the original position by rotating at a predetermined angle with respect to the end of the work arm So that the rotary plate of the head can be closely adhered to the surface of the workpiece even if the surface curvature of the workpiece varies in the lateral direction during the work process.

In addition, the present invention is configured such that the head stopper is mounted on one side of the head to prevent the head portion from rotating at a predetermined angle with respect to the yoke, so that even when the surface curvature of the workpiece changes in the vertical direction during the work process, So that it can be closely adhered to the surface of the workpiece.

1 is a schematic overall configuration diagram of a surface treatment apparatus according to the present invention.
Fig. 2 is a diagram showing the coupling relationship between the work head and the work arm in the surface treatment apparatus according to the present invention. Fig.
The present invention relates to a surface treatment apparatus, and more particularly, to a surface treatment apparatus,
FIG. 4 is a schematic operating configuration diagram of a rotation guide, a spring, and guide rods of a working head correcting mechanism according to the present invention. FIG.
5 is a schematic operational structural view of a head stopper in a working head correcting mechanism according to the present invention;
6 is a schematic structural view 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. DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the present invention basically relates to a surface treatment apparatus for sanding or polishing a surface portion of a workpiece made of a material such as a metal or a reinforced plastic. Such a surface treatment apparatus, as shown in FIG. 1, A body 10, a body 20, a work arm 30, and a work head 100.

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

The body 20 is mounted on the upper portion of the housing 10 and installed to be rotatable with respect to the housing 10 at a predetermined angle using a drive shaft 22. A rotary disk 26 is mounted on one side of the front surface of the body 20. The rotary disk 26 takes charge of the rotation of the work arm 30, and the drive means is installed inside the body.

The working arm 30 is configured to protrude from the rotating disk 26 of the body 20 by a predetermined length and the rotating disk 26 can be rotated at an angle according to the operation. A working head 100 is provided on one side of the working arm 30 and the working arm itself is configured to be able to move up and down by a predetermined height by a driving means not shown.

The working head 100 may include a yoke 120 coupled to the supporting plate 110 and a head 130 supported by the yoke 120 as shown in FIG.

The support plate 110 is mounted on an end portion of the work arm 30 and has a fixing rod 112 protruding vertically at a central portion thereof. The support plate 110 is rotated together with the work arm 30 when rotated, and is preferably made of a metal having a predetermined thickness.

The yoke 120 is a portion for supporting the head 130, and an 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. It is preferable that the fixing rod 112 is coupled to the insertion tube 122 by a separate fastening means while the yoke 120 is freely rotatable with respect to the support plate 110. [ This is so that the head 130 can appropriately respond to the surface curvature of the workpiece.

The supporting plate 110 attached to the end of the working arm 30 rotates as well when the working arm 30 is rotated by a predetermined angle as required. When the yoke 120 rotates freely with respect to the supporting plate 110 The head 130 supported by the yoke 120 can easily adapt to the surface curvature of the workpiece which changes in the course of the work. The yoke may be made of a certain thickness of metal.

The head 130 is a part where a workpiece is to be worked, and a rotating plate 132 is provided below the head 130. The rotating plate 132 rotates at a constant speed when high-pressure air is injected by an air supply device (not shown), and a polishing pad or the like is attached to the lower portion. The head 130 may be hinged to both ends of the yoke 120 at both ends thereof.

When the yoke 120 is coupled to the support plate 110 in a freely rotatable manner as described in the related art, the head 130 provided on the yoke 120 is moved in a direction There is an advantage that the head 130 can be easily adhered to the surface curvature of the workpiece, but the head 130 may not be closely attached to the surface of the workpiece. This may occur when the surface curvature of the workpiece suddenly changes during work or when the surface curvature of the workpiece has various curvatures, and particularly when the surface curvature of the workpiece is formed to be inclined at right angles to the left and right.

In this case, since the rotating plate 132 is not tightly 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 work for the workpiece is not performed as intended. 2 and 3, a rotation guide 140, a spring 150, and a guide rod 160 are provided to enable the work head 100 to maintain a predetermined position in the process of operation. Position restoration mechanism is proposed.

The rotation guide 140 has a coupling piece 142 on one side and a receiver 144 on the other side. It is preferable that the coupling piece 142 is a part 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 and has a configuration corresponding to the shape of the insertion tube 122 . The receptacle 144 has a receiving space 145 of a predetermined size and a guide hole communicating with the receiving space 145 is formed on each of the upper and lower sides. Although only the upper guide hole 146 is shown in FIG. 3, a lower guide hole having the same structure is formed on the lower side of the receiver. The rotation guide may be made of a metal having a predetermined thickness.

The spring 150 may be a conventional spring having a restoring force, and is accommodated in the receiving space 145 of the rotation guide 140. The present invention proposes a configuration in which both ends of the receptacle 144 of the rotation guide 140 are opened and both ends of the opened receptacle 144 are sealed by the cap 148 for easy seating of the spring 150. [ In this case, it is possible to insert the other end side of the receiver into the spring accommodation space with the one side cap being hermetically closed at one side of the receiver, and then sealing the other side opening of the receiver with the other side 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 is extended and protruded through the upper and lower guide holes of the rotation guide 140. The spring 150 is embedded in the receiving space 145 of the rotation guide 140. Since the spring 150 is typically formed of a spiral coil, the guide rod 160 can be inserted through the gap between the central portions of the coil. have.

The rotation guide 140 rotates together with the yoke 120 and the guide rod 160 is fixed to the support plate 110 in the correct position restoring mechanism of the working head according to the present invention. In the meantime, although the guide rod has a bolt structure in the drawing, it is of course only one example, and it is needless to say that various structures such as forming a screw thread only in a portion fixed to the fixed rod side can be applied.

Operation of the work head correcting mechanism of the above-described structure will be schematically described with reference to FIGS. 1 and 4, respectively.

First, when the workpiece has a certain curvature, when the rotation disk 26 of the body 20 rotates at a certain angle, the work arm 30 mounted on the rotation disk 26 also rotates together. Accordingly, when the high-pressure air is supplied, the rotating plate 132 is rotated at a high speed in a state in which the rotating plate 132 is in close contact with the surface of the workpiece, Work on the water surface begins.

If the surface curvature of the workpiece changes during the surface treatment operation by the rotation plate 132, the work head 100 (more specifically, the rotation plate 132) is strongly adhered to the surface of the workpiece The working head 100 appropriately adapts to the surface curvature of the changing workpiece. That is, the yoke 120 of the work head 100 rotates in a specific direction (direction 1 or 2) according to the surface curvature of the workpiece with respect to the support plate 110. The direction ① may occur when the surface curvature of the workpiece is inclined gently to the right, and the direction ② may occur when the surface curvature of the workpiece is tilted gently to the left.

When the yoke 120 rotates in a specific direction, the rotation guide 140 having one side fixed to the insertion tube 122 of the yoke 120 rotates together in a specific direction. On the other hand, The guide rod 160 having one side thereof fixed to the original position (position (1) or position (2)).

Since the guide rod 160 is in contact with the spring in a state of passing through the central portion of the spring 150 built in the receiving space 145 of the rotation guide 140, The respective portions of the spring 150 located on the left and right of the guide rod with respect to the guide rod 160 act in the opposite direction to the rotation direction of the rotation guide 140 when the guide rod 160 maintains its original position .

That is, when the rotation guide 140 rotates together with the yoke 120 in the direction of?, The guide rod 160 is fixed at the original position? Together with the support plate 110, When the rotation guide 140 is rotated in the direction 2 together with the yoke 120, the guide rod 160 is rotated together with the support plate 110 in the direction of the original ② The spring 150 acts in the direction &thetas; 'so as to act to restore the yoke 120 to its original position.

Accordingly, when the surface curvature of the workpiece changes while the work is being performed, the elastic body 150 generates a restoring force in the opposite direction, even if the yoke 120 rotates at a predetermined angle from the support plate 110 in correspondence thereto So that the rotating plate specific portion of the work head 100 mounted on the yoke 120 does not separate from the surface of the workpiece due to the change in the surface curvature of the workpiece, And the surface treatment can be performed smoothly.

6, since the work head 20 is hinged to one end of the yoke 10, when the surface curvature of the workpiece changes gently in the vertical direction, 20 can freely rotate with respect to the yoke 10 by a predetermined angle or more. However, in this case, when the surface curvature of the workpiece is inclined upwards, the work head 20 is lifted upward from the hinge joint portion.

However, since the work head itself has a certain weight, if the work head is lifted over a certain angle, the front surface portion of the rotary plate 30 is detached from the surface of the workpiece, so that the surface treatment work can not be performed smoothly there was. To this end, the present invention proposes a head stopper that prevents the head from rotating beyond a certain angle relative to the yoke from the hinge-engaging portion.

2 and 5, the head stopper 170 according to the present invention may include an elongate piece 172, a length adjusting piece 174, and an elastic body 176.

The extension piece 172 protrudes laterally from the top of the head 130, and one side of the extension piece is fixedly coupled to one side of the top of the head. The extension may be made of a metal of a certain thickness.

The length adjusting piece 174 is coupled to the elongated piece 172 and has one end coupled to the elongated piece 172 and the other end extending downward to protrude. Preferably, the length adjusting piece 174 is adjustable in length in a vertical direction. For this purpose, the present invention proposes a case in which the length adjusting piece has a bolt structure.

That is, when the bolt is rotated at a predetermined angle in a state where a nut (not shown) fastened to the upper portion of the bolt is disengaged in the drawing, the bolt moves upward or downward a certain distance in accordance with the rotation direction thereof, It will change. However, whether or not to use the bolts to adjust the length or to use other configurations such as screws may be an option.

The elastic body 176 is provided at an end of the length adjusting piece 174 and moves upward or downward by a predetermined distance along with the length adjusting piece according to the operation of the length adjusting piece 174. The height of the elastic body 176 may be adjusted so that the elastic body 176 may be spaced apart from the upper end portion of the front side of the yoke 120 by a predetermined distance. The gap between the elastic body and the yoke defines a range in which the head 130 rotates with respect to the hinge-coupling portion of the yoke 120, and the confining range varies depending on the surface curvature of the workpiece, . The elastic body may be made of a conventional resin material.

An operational configuration of the head stopper 170 having the above-described structure will be schematically described with reference to FIGS. 2 and 5. FIG.

The length adjuster 174 of the head stopper 170 is adjusted in consideration of the surface curvature of the workpiece so that the elastic body 176 is positioned at a predetermined distance from the upper end of the front side of the yoke 120, Work on the work surface is proceeded. The interval is adjusted to the maximum curvature in the vertical direction of the workpiece.

When the surface curvature of the workpiece changes gently vertically in the course of the work, the head 130 on which the rotary plate 132 hinged to the yoke 120 is mounted changes from the hinge-jointed portion as a starting point It is adapted to the surface curvature of the workpiece and rotated little by little (③).

When the surface 130 of the head 130 rotates from the hinge-engaging portion, the elastic body 176 is rotated in the direction of the hinge- The gap between the elastic body 176 and the upper end of the front side of the yoke 120 gradually decreases and finally the elastic body 176 contacts the upper end of the front side of the yoke 12, Will no longer rotate and will remain in that state.

That is, in the case where the surface curvature of the workpiece changes gently vertically, the head 130 appropriately adapts to the surface curvature of the workpiece changing while slightly rotating from the hinge- (The front portion) of the rotary plate 132 is prevented from separating from the surface of the workpiece while restricting the rotation range thereof to a certain angle (the maximum curvature of the workpiece in the vertical direction).

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 embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It will be apparent that the present invention can be practiced with added features.

100: work head 110:
120: yoke 130: head
140: rotation guide 150: elastic body
160: guide rod 170: head stopper

Claims (4)

A body 10 mounted on the upper portion of the housing 10 with a rotary disk 26 disposed on one side of the front of the housing 10; A work arm 30 protruding from the rotary disk 26 of the body 20 with a predetermined length and a work head 100 provided with a rotary disk 132 and provided on one side of the work arm 30, A restoring mechanism for a working position of the working head (100)
A supporting plate 110 provided with a fixing rod 112 protruding vertically and mounted to an end of the working arm 30;
A yoke 120 having an insertion tube 122 into which the fixing rod 112 is inserted and being rotatably coupled to the supporting plate 110;
A head 130 hinged to both end portions of the yoke 120 at both ends thereof and having the rotation plate 132 at a lower portion thereof;
A coupling 144 is provided at one side of the insertion tube 122 of the yoke 120 and a coupling 144 is provided at the other side of the insertion tube 122, A rotation guide 140 having a guide hole communicating with the accommodating space 145;
A spring 150 positioned in the receiving space 145 of the rotation guide 140;
One end of which is fixed to one side of the fixing rod 112 of the supporting plate 110 and the other side is extended to protrude through the upper and lower guide holes of the fixing plate 140;
Wherein the surface treatment apparatus comprises: The method according to claim 1,
The head 130 is provided with an elongated piece 172 projecting laterally from the upper portion of the work head 130 and a length adjusting piece 174 coupled to the elongated piece 172 at one end and extending downward at the other end, And a head stopper (170) formed of an elastic body (176) provided at an end of each length adjusting piece (174). 3. The method of claim 2,
Wherein the length adjusting piece (174) is made of a bolt. The method according to claim 1,
Wherein both ends of the receptacle (144) of the rotation guide (140) are open and both ends of the opened receptacle (144) are closed by a cap (148).

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