JPH05318298A - Primer removing device - Google Patents

Abstract

PURPOSE:To remove primer effectively and accurately by mounting grinding cutters on a disc head which is movable in the direction intersecting the running direction of a gate type mobile dolly. CONSTITUTION:To remove primer, first a workpiece A is set on a base 26, and then the first, second, and third disc heads 2, 3, 4 are moved to specified positions on a main girder 1. Grinding cutters 28 are rotated, and a gate type mobile dolly 25 is put into running along rails 27, 27. When the cutters 28 reach the front extremity of the workpiece A, the cutters 28 are sunk until they come in contact with the oversurface of the workpiece A. As a result, the primer in the specified place is removed by the dolly 25 linearly with a specified width.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a primer, that is, an apparatus for removing paint applied to the surface of a blasted steel sheet for the purpose of preventing rust.

[0002]

2. Description of the Related Art Generally, primer removal work is indispensable in a bridge manufacturing process, but in the past, manual work was performed by a belt sander, which was a heavy labor. Further, in the primer removing work using the belt sander, the grinding line meanders, so that an effective grinding width may not be obtained by one cutting. Further, as shown in FIG. 5, the belt sander 30 has a problem that dust is rolled up and the surrounding environment is deteriorated.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a primer removing device which can remove a primer efficiently and accurately.

[0004]

[Means for Solving the Problems] That is, the primer removing device of the present invention is provided with a gate type traveling carriage mounted on a traveling rail, and a traveling direction of the gate type traveling carriage mounted on the gate type traveling carriage. It is characterized by being formed from at least one disk head movable in the intersecting direction and a grinding cutter provided on the disk head.

As described above, the gate-type traveling carriage mounted on the traveling rail and at least one movable on the gate-type traveling carriage that is movable in a direction intersecting the traveling direction of the gate-type traveling carriage.
By forming the base disk head and the grinding cutter provided on the disk head, the primer can be removed efficiently and accurately.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 to FIG. 3, reference numeral 25 denotes a gate type traveling carriage, and the gate type traveling carriage 25 travels on a pair of traveling rails 27, 27 (Y-axis direction) laid on a base 26. Has become. As shown in FIG. 2, two traveling motors 17 are prepared for traveling of the portal traveling vehicle 25. The gate type traveling carriage 25, as shown in FIG.
It is formed by a pair of left and right carriages 10 and a main girder 1 (X-axis direction) mounted on these carriages 10, 10. The main girder 1 is provided so as to be orthogonal to the traveling rails 27, 27. ing.

Second and third disk heads 3 and 4 are mounted on the front surface of the main girder 1 and can be moved along the main girder 1 in a direction orthogonal to the traveling rails 27 and 27. . On the front of the main girder 1, there is a rack 12,
Two guides 13, 13 are fixed, and the second disk head 3 is movably attached to the two guides 13, 13. The positioning of the second disk head is performed by a feed motor 7 mounted on the disk head 3, and the feed motor 7 rotates a pinion (not shown) meshed with the rack 12 so as to rotate the second disk head. The head 3 can be moved to any position. Further, the second disk head 3 is provided with a disk pressure adjusting unit 6 so that the contact pressure of the grinding cutter 28 can be adjusted. As shown in FIG. 4, a disc-shaped diamond cutter is used as the grinding cutter 28, and is inclined by θ ° in the traveling direction. Further, the second disk head 3 is provided with a disk electric motor 5,
The grinding cutter 28 is rotated at a high speed.

The third disk head 4 is formed in the same manner as the second disk head 3. Further, a first disk head 2 is mounted on the back surface of the main girder 1 so that it can be moved along the main girder 1 in the direction orthogonal to the traveling rails 27, 27 like the second disk head 3. ing. In FIG. 1, reference numeral 20 is a cable reel, and 24 is an operation panel, and the disk heads 2, 3 and 4 can be operated by operating buttons on the operation panel 24. Furthermore, it is possible to automate the start and end of the primer removal work by interlocking with a plate edge detection sensor (not shown).

At the time of removing the primer, the workpiece A is set on the substrate 26 as shown in FIGS. Then, the first, second and third disk heads 2, 3 and 4 are moved to predetermined positions on the main girder 1, respectively. Next, after rotating the grinding cutters 28 respectively, the gate type traveling carriage 25 is caused to travel along the traveling rails 27, 27.

Then, when the grinding cutter 28 reaches the front end portion of the work A, the grinding cutter 28 is lowered until the work A is brought into contact with the upper surface. As a result, as the gate-type traveling carriage 25 travels, the primer at a predetermined location is removed in a straight line with a predetermined width.

[0011]

As described above, according to the present invention, the gate type traveling carriage mounted on the traveling rail, and the gate type traveling carriage mounted on the traveling rail and moving in a direction intersecting the traveling direction of the gate type traveling carriage. Since it is formed from at least one disk head and a grinding cutter provided on the disk head, the primer can be removed efficiently and accurately.

[Brief description of drawings]

FIG. 1 is a front view of a primer removing device according to the present invention.

FIG. 2 is a plan view of a primer removing device according to the present invention.

FIG. 3 is a side view of the primer removing device according to the present invention.

FIG. 4 is a side view of a cutter used in the primer removing device according to the present invention.

FIG. 5 is an explanatory diagram showing a state in which dust is rolled up by a conventional belt sander.

[Explanation of symbols]

 2 disk head 3 disk head 4 disk head 25 gate type traveling carriage 27 traveling rail 28 grinding cutter

Front Page Continuation (72) Inventor Takeshi Kamata 3-1-1 Tam, Tamano City, Okayama Prefecture Mitsui Engineering & Shipbuilding Co., Ltd. Tamano Office

Claims (1)

[Claims] 1. A gate type traveling carriage mounted on a traveling rail, and at least one disk head mounted on the gate type traveling carriage and movable in a direction intersecting a traveling direction of the gate type traveling carriage. And a grinding cutter provided on the disk head.