JPH05345500A - Coating film removing apparatus - Google Patents

Abstract

PURPOSE:To provide a coating film removing apparatus efficiently removing the coating film on the surface of a plate member in conformity with the shape of the plate member and preventing the scattering of ground coating film dust to effectively collect the coating film dust. CONSTITUTION:In a coating film removing apparatus 3, a grinding wheel 10c is rotated on a plate member 2 placed on a plane centering around the axial line parallel to the plane and moved in one direction parallel to the plane, the direction crossing said direction at a right angle and the direction crossing the plane at a right angle to remove the coating film formed on the surface of the plate member 2. A support shaft 8 supporting the rotary shaft of the grinding wheel 10c around the axial line crossing the plane at a right angle so as to freely rotate the same within the plane parallel to said plane, the drive source revolving the support shaft 8, a dust collecting cover 11a almost covering the whole of the grinding wheel 10c excepting the contact part of the grinding wheel 10c with the plate member 2 and a suction mechanism 11 sucking the coating film dust in the dust collecting cover 11a are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention removes a coating film or dirt on the surface of a steel plate member as a pretreatment for marking work such as welding lines, cutting lines or bending position indicating lines on a steel plate member such as a bridge. The present invention relates to a coating film removing device.

[0002]

2. Description of the Related Art The surface of a coated steel plate member is usually coated with a coating film such as a primer for rust prevention. In order to perform a marking operation for drawing a welding line, a cutting line, a bending position indicating line, or the like on the coated steel plate member, it is necessary to remove the coating film.

Conventionally, as a technique for removing the coating film, a ring-shaped grinding wheel for grinding the coating film is brought into contact with the coated steel plate on a coated steel plate placed in a plane, and the grinding wheel is moved horizontally. While rotating with an axis, the grinding wheel is moved in one direction along the plane or in a direction perpendicular to the grinding wheel while collecting the coating film dust that has been ground by a suction port provided outside the grinding wheel. A coating film removing device for removing a film is known.

[0004]

However, the above-mentioned conventional coating film removing techniques have the following problems. That is, in order to grind the coating film on the surface of the steel sheet and remove it evenly and uniformly, it is necessary to always make the traveling direction of the rotation shaft of the grinding wheel and the support shaft supporting the rotation shaft orthogonal to each other. Since the rotating shaft of the grinding wheel is fixed in one direction of the support shaft, the device has one direction along the plane on the coated steel plate placed in the plane or a direction orthogonal to the one direction. Only a uniform coating film could be removed. In other words, the grinding wheel could not be moved according to the shape of the coated steel plate, and the grinding efficiency had to be extremely low. Moreover, since the suction port for the coating dust is opened only toward the dust generation portion of the grinding wheel, the dust collection effect is poor, and the coating dust that has not been sucked is scattered and the inside of the workplace and the device itself become dirty. There was a problem.

The present invention has been made in view of the above-mentioned problems, and is uniform in all directions on a plate placed in a plane and efficiently in accordance with the shape of the plate. It is an object of the present invention to provide a coating film removing device for removing a coating film on the surface. Another object of the present invention is to provide a coating film removing device which prevents scattering of ground coating film dust and removes the coating film without contaminating the inside of the workplace and the device itself due to the scattering of coating film dust. It is a thing.

[0006]

A coating film removing apparatus according to claim 1 of the present invention is capable of rotating on a plate body in which a grinding wheel is placed in a plane with an axis parallel to the plane,
And, this is movable in one direction along the plane, a direction orthogonal to this, and a direction orthogonal to the plane, and further, a support shaft supporting the rotating shaft of the grinding wheel has an axis line orthogonal to the plane. It is configured so that it can rotate.

A coating film removing apparatus according to claim 2 of the present invention comprises:
The grinding wheel is provided with a dust collecting cover that covers substantially the entire surface of the wheel except a portion in contact with the grinding surface, and a suction mechanism that sucks coating film dust in the dust collecting cover.

[0008]

According to the invention of claim 1, the grinding wheel rotates on the plate placed in the plane with the axis parallel to the plane, and the grinding wheel rotates in one direction along the plane. The grinding wheel moves on the plate surface by moving in a direction orthogonal to the plane and in a direction orthogonal to the plane, and further by rotating a support shaft supporting the rotation axis of the grinding wheel with an axis line orthogonal to the plane. Can be driven to rotate in any direction.

According to the invention of claim 2, substantially all of the grinding wheel is covered with a dust-collecting cover except for a portion where the grinding wheel comes into contact with the grinding surface to collect the grinded coating film dust. ..

[0010]

1 to 3 show one embodiment of the coating film removing apparatus of the present invention. In the figure, reference numeral 1 is a base, 2 is a plate installed on the base 1 and having a coating film formed on its surface, 3
Is a coating film removing device.

The coating film removing device 3 is arranged so as to straddle the plate body 2 placed horizontally on the base 1, and moves in one direction on the two rails 4 and 4 on the base 1. A main body 5 freely installed, a carriage 6 movably provided on the main body 5 in a direction orthogonal to the direction, a vertical movement mechanism 7 provided on a front surface 6a of the carriage 6, and a vertical movement mechanism. 7, a support shaft 8 supported by a frame member 7b provided on the front surface 7a of the machine 7, a grinding head 10 connected to a lower portion of the support shaft 8, and a dust collecting cover 1 provided at the lower end of the support shaft 1.
1a, a suction mechanism including a flexible dust collecting duct 11b provided at the upper end of the support shaft 8 through the support shaft 8 and a negative pressure source (not shown) provided at the rear part of the main body 5 11 and 11.

Drive motors (not shown) for moving the main body 5 on the rails 4, 4 are provided on the legs 5a, 5a of the main body 5, respectively.
The support shaft 8 is configured to be movable in one direction in the horizontal plane of the plate body 2 (hereinafter, referred to as x direction).

A drive motor (not shown) is connected to the carriage 6, so that the support shaft 8 can be supported.
Is movable in a direction (hereinafter, referred to as y direction) orthogonal to the one direction in the horizontal plane on the plate body 2.

The vertical movement mechanism 7 has a structure in which the support shaft 8 is movable in the vertical direction (hereinafter referred to as z direction) by a cylinder mechanism.

The support shaft 8 is constituted by a mechanism for horizontally rotating only the grinding head 10 while fixing the dust collecting duct 11b.

FIG. 4 and FIG. 5 show the details of the support shaft 8. The support shaft 8 has bearings 8b, 8b in an outer cylinder 8a whose upper end is connected to the dust collecting duct 11b.
The inner cylinder 8c is rotatably supported via the. The first spur gear 8d and the first spur gear 8d are provided outside the inner cylinder 8c.
A second spur gear 8e that comes into contact with the spur gear 8d is provided, and the inner cylinder 8c is moved from the second spur gear 8e by the drive source 9 including a drive motor 9a and a speed reducer 9b. When the driving force is transmitted to the flat gear 8d, it is configured to rotate about the vertical axis. Outside the inner cylinder 8c, limit switches 8f, 8g, 8h, and 8 for setting and determining the origin position of the support shaft 8, determining the direction, and limiting the rotation range are provided.
i are respectively provided, and the outputs from these limit switches are sent to a control unit (not shown) to control the rotation of the support shaft 8 and the rotation shaft B of the grinding wheel 10c (see FIG. 6). The supporting shafts 8 are constructed so that the traveling directions thereof are always orthogonal to each other. A flange 8j is provided at the lower end of the inner cylinder 8c, and the flange 8j and the frame member 10a are connected to each other to support the grinding head 10.

6 and 7 show details of the grinding head 10. The grinding head 10 includes a frame member 10a fixed to a lower portion of the support shaft 8 and a drive motor 10b provided at a lower end of the frame member 10a.
And a grinding wheel 10c for grinding the coating film, and a pulley (not shown) provided on the output shaft A of the drive motor 10b.
Endless drive belt 1 stretched between a pulley (not shown) provided on the rotating shaft B of the grinding wheel 10c.
0d, one end of which is connected to the frame member 10a and the other end of which is connected to the rotating shaft B of the grinding wheel 10c, and a cylinder 10e which adjusts the pressing force of the grinding wheel 10c.

The dust collecting cover 11a is a frame member 10a.
The grinding wheel 10c covers almost the entire surface except for the portion contacting the plate body 2 and rotates integrally with the grinding head 10. Also, the dust collection duct 11b
Has one end connected to the inner cylinder 8c and the other end connected to a negative pressure source (not shown) provided in the rear portion of the main body 5 to collect the ground coating film dust. In this structure, the support shaft 8, the dust collecting duct 11b, and the negative pressure source (not shown) form a suction mechanism 11.

The operation of removing the coating film on the surface of the plate 2 by the coating film removing apparatus 3 of this embodiment will be described below. First, the plate body 2 for removing the coating film is placed on the base 1.
Next, according to the shape of the plate body 2, the main body 5 is moved in the x direction,
The carriage 6 is moved in the y direction, and the grinding head 10 is arranged on the grinding start point. At this time, the suction mechanism is also operated at the same time.

Next, the grinding wheel 10c is rotated by the drive motor 10b, and the up-and-down moving mechanism 7 lowers the support shaft 8 in the z direction to bring the grinding wheel 10c into contact with the plate body 2 to form a coating film. Grind. The coating film is ground by moving the support shaft 8 in the x direction, the y direction, or the direction in which the x direction and the y direction are combined, in accordance with the shape of the plate body 2, and
The support shaft 8 is moved in the moving direction of the support shaft 8 and the grinding wheel 1.
The rotation is always performed by rotating in the direction perpendicular to the rotation axis B of 0c. The rotation of the support shaft 8 is limited by the limit switches 8f, 8g,
8h and 8i are used to make adjustments while properly grasping the setting and determination of the origin position of the support shaft 8, the direction determination, and the limitation of the rotation range. In addition, the plate body 2 of the grinding wheel 10c
The pressing force on the is adjusted by the cylinder 10e.

The coating film dust generated at the position where the grinding wheel 10c and the plate member 2 come into contact with each other is not scattered by the dust collecting cover 11a which rotates integrally with the grinding head 10,
Dust is collected by a negative pressure source (not shown) through the inner cylinder 8b and the dust collecting duct 11b.

As described above, according to the coating film removing apparatus 3 of the present invention, the grinding wheel 1 is placed on the plate body 2 placed on the base 1.
0c rotates about an axis parallel to the base 1, and
This moves along the base 1 in the x-direction, the y-direction, and the z-direction, and further, the support shaft 8 that supports the rotation shaft B of the grinding wheel 10c rotates with the axis line in the z-direction, Since the grinding wheel 10c can be driven to rotate on the plate body 2 in all directions, the coating film on the surface of the plate body 2 can be uniformly removed and efficiently removed according to the shape of the plate body 2. ..

According to the coating film removing apparatus 3 of the present invention,
Dust collecting cover 1 covering substantially the entire grinding wheel 10c except for the portion where the grinding wheel 10c contacts the plate body 2.
1a is provided and the dust collecting cover 11a is rotated together with the grinding wheel 10c.
Since a suction mechanism for sucking coating film dust inside is provided,
The coating film can be removed without contaminating the inside of the work place and the apparatus itself due to the scattering of the coating film dust that has been ground.

The coating film removing apparatus of the present invention is not limited to the one shown in the above embodiment. For example, regarding the movement and rotation of the support shaft 8, the shape information of the plate body is previously set.
By inputting the parameters in the x, y, and z directions to the control unit, it is possible to automatically move or rotate the support shaft 8 to automatically remove the coating film on the plate surface.

Also, regarding the marking work to be carried out after the coating film removing work, if the marking device is attached to the carriage 6, the marking work can be carried out subsequently to the coating film removing work, and the marking work can be carried out efficiently. Can proceed.

[0026]

As described above, according to the coating film removing apparatus of the present invention, the grinding wheel rotates on the plate placed in the plane with the axis parallel to the plane, and One direction along a plane, a direction orthogonal thereto, and a direction orthogonal to the plane, further, by rotating the support shaft supporting the rotating shaft of the grinding wheel with an axis orthogonal to the plane, Since the grinding wheel can be driven to rotate on the surface of the plate body in all directions, the coating film on the surface of the plate body can be removed uniformly and efficiently according to the shape of the plate body. Further, according to the coating film removing apparatus of the present invention, a dust collecting cover is provided to cover substantially the entire grinding wheel except a portion where the grinding wheel contacts the grinding surface, and the dust collecting cover is integrated with the grinding wheel. Since the suction mechanism for rotating to and sucking the coating film dust in the dust collecting cover is provided, the coating film can be removed without contaminating the inside of the work place and the apparatus itself due to the scattering of the ground coating film dust.

[Brief description of drawings]

FIG. 1 is a side view of essential parts of a coating film removing apparatus shown as an embodiment of the present invention.

FIG. 2 is a front view of the same device.

FIG. 3 is a front view of the main part of the apparatus.

FIG. 4 is a front sectional view of a main part showing details of a support shaft of the apparatus.

FIG. 5 is a plan view showing a partial cross-section of a main part of the device.

FIG. 6 is a side view showing details of a grinding head of the apparatus.

FIG. 7 is a rear view of the same.

[Explanation of symbols]

 2 plate body 3 coating film removing device 8 support shaft 9 drive source 10c grinding wheel 11 suction mechanism 11a dust collecting cover B rotating shaft

Claims (2)

[Claims] 1. On a plate body placed in a plane, a grinding wheel is rotated about an axis parallel to the plane, and the grinding wheel is rotated along the plane in one direction, a direction orthogonal thereto, and the plane. By moving in a direction orthogonal to the coating film removing apparatus configured to remove the coating film formed on the surface of the plate body, the rotation axis of the grinding wheel is the plane with the axis orthogonal to the plane. A coating film removing device comprising a support shaft rotatably supported in parallel planes and a drive source for rotating the shaft. 2. The coating film removing apparatus according to claim 1,
A coating film removing device provided with a dust collecting cover that covers substantially the entire grinding wheel except a portion where the grinding wheel contacts the grinding surface, and a suction mechanism that sucks coating film dust in the dust collecting cover.