KR20030050484A - Surface density detecting device of coated strip by using grindstone - Google Patents

Abstract

PURPOSE: A surface inspecting apparatus for a coating article is provided to continuously inspect defects formed on a surface of the coating article by using a grindstone. CONSTITUTION: A surface inspecting apparatus includes a housing(10). A pair of fixing beams(22) are fixed to the housing(10) in vertical to a proceeding direction of a sample(17). A plurality of sample guide rolls(15a,15b) is rotatably fixed to the guide fixing beams(22). The sample guide rolls(15a,15b) are aligned in parallel to each other so as to move the sample(17) by making contact with the sample(17). A driving motor(12c) is installed at one side of the housing(10). Actuating motors(12a,12b) are fixed to upper and lower surfaces of the housing(10), respectively. A plurality of grindstones(14) is fixed to rotating shafts of the actuating motors(12a,12b).

Description

Surface Inspection System of Plated Products Using Grinding Stones {SURFACE DENSITY DETECTING DEVICE OF COATED STRIP BY USING GRINDSTONE}

The present invention relates to a surface inspection device of a plated product using a grinding wheel.

In general, the surface inspection of the plated product produced in the steel mill determines whether the defect is through the naked eye of the operator.

However, most steel products used for home appliances and automobiles are usually processed by presses, and their quality is very strict. Therefore, the steel, hot rolled, cold rolled, and galvanized steel can be used for scarves, scales, digging, dents, rolls. If the defects such as marks are hot dip galvanized and electro galvanized, it is difficult to visually conceal the plated layer, and in particular, the press-processed product shows a defective part only after pressing, which causes quality deterioration of plating quality.

Despite these problems, conventionally, there is no equipment for inspecting such defects. Therefore, the operator simply rubs the surface of the plated product by means of a grindstone and finds the defects on the surface by hand. Therefore, the request for a facility that can solve this has been urgent.

The present invention was devised to solve the conventional problems as described above, and cover the zinc plated layer of the hot dip galvanized product and the electrogalvanized product to find a grindstone that can easily inspect defects that cannot be visually inspected continuously. The purpose is to provide a surface inspection device of the plated product used.

1 is an external perspective view of an apparatus of the present invention;

Figure 2 is a perspective view of the main operation state of the device of the present invention,

3 and 4 is a perspective view of the main portion of the power transmission system constituting the device of the present invention.

Explanation of symbols on the main parts of the drawings

10: housing 12a, b: working motor

12c: driving motor 14,18: grindstone

15a, b: sample guide roll 17: sample

22: guide fixed beam

The object of the present invention is a rectangular box-shaped housing with an open surface; A pair of guide fixed beams symmetrically fixed to each other on an open surface of the housing in a direction orthogonal to a sample travel direction passing through the housing; A plurality of sample guide rolls rotatably fixed to the guide fixed beam and spaced apart from each other so as to contact the sample; A driving motor installed by the main shaft and the worm gear of the sample guide roll so as to be power-transmitted and provided on one side of the open surface of the housing; An operating motor fixed to the upper and lower end faces of the housing and penetrating therethrough and having a rotating shaft disposed thereon; It is achieved by providing a surface inspection device for a plated product using a grindstone, characterized in that it comprises a plurality of grindstone is fixed to the rotary shaft of the operating motor and contact driven on the upper and lower surfaces of the sample.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is an external perspective view of the device of the present invention, Figure 2 is a perspective view of the main operation state of the device of the present invention.

According to the present invention, the samples 17 are continuously rotated by installing the grindstones 14 and 18, which are devices for precisely inspecting the defects in the inner and outer parts of the finished steel plate, to be in contact with the upper and lower surfaces of the plated product sample 17. The surface inspection is performed by moving the sample guide rolls 15a and b from the front side to the rear side.

Sample guide rolls 15a and b for moving the sample 17 are connected to the drive motor 12c.

In addition, a rectangular box-shaped sloped housing 10 is installed, and the sample guide rolls 15a and b are disposed between the open sides so that the sample 17 can be mailed to the housing 10.

The sample guide rolls 15a and b are arranged to form a pair apart from each other at a distance from each other, and both ends thereof penetrate through the guide fixing beam 22 provided symmetrically with each other in the opening of the housing 10. do.

In particular, the support frame 33 is fixed to one side of the guide fixed beam 22, the drive motor 12c is provided on the support frame 33.

A drive worm gear 20a as shown in FIG. 4 is fixed on the rotation shaft of the drive motor 12c, and a pair of driven worm gears 20b and c spaced apart from each other are engaged with the drive worm gear 20a.

Each driven worm gear 20b, c is installed so as to be capable of power transmission with the sample guide rolls 15a, b in the same manner.

As shown in FIG. 3, the driving guides 15d and 15d are fixed to the sample guide rolls 15a and b, respectively, and the driving gears 15d and the driving guide gears 20b and c are engaged with each other. It is excreted interlocked with that of the connected spindle.

In addition, the contact driving unit is formed by coating or attaching a special processing or preferably rubber or the like on the both ends of the sample guide rolls 15a and b adjacent to the driving gear 15d to increase the contact force with the sample 17. It is preferable to form (15c).

The operating motors 12a and b are fixed to the upper and lower end surfaces of the housing 10, respectively, and the rotation shafts of the operating motors 12a and b are disposed through the upper and lower end surfaces of the housing 10. The grindstones 14 and 18 are provided in the rotating shaft end part.

The grindstones 14 and 18 are preferably arranged in three equilateral triangles in order to be able to inspect a wide range in a short time.

The working relationship of the present invention having such a configuration is as follows.

The plated steel plate through the plating process is cut by a cutter, and then coiled by a tension reel to be supplied to the demander. A sample is taken from the leading and trailing steel sheet before cutting, and the surface inspection is performed.

At this time, the leading and trailing dividing point and the welded part are cut by the cutting machine to collect the sample 17, and the collected sample 17 is moved into the housing 10 to perform the surface inspection.

To this end, when power is applied to the driving motor and the operating motors 12a, b and c to drive them, the grindstones 14 and 18 are rotated and the guide rolls 15a and b are driven while the sample 17 is driven. Will be moved.

It is more preferable that the moving speed can be adjusted as necessary and configured to raise and lower the working motors 12b and c by a length such that a means such as a hydraulic cylinder is provided.

The sample 17 to be moved is precisely polished by the rotating grindstones 14 and 18, thereby making the defect site easily visible to the naked eye.

As described above, according to the present invention, it is possible to easily and easily visualize defects caused on the surface of the plated steel sheet by visually polishing the plated steel sheet with a rotating grindstone to improve the quality of the plated product and to meet the demand. Reliability can be restored and the time required for inspection can be saved.

Claims (3)

A rectangular box-shaped housing 10 having open sides; A pair of guide fixing beams 22 symmetrically fixed to each other on an open surface of the housing 10 in a direction orthogonal to a traveling direction of the sample 17 through the housing 10; A plurality of sample guide rolls (15a, b) rotatably fixed to the guide fixed beams (22) and spaced in parallel to each other so as to contact the sample (17); A drive motor 12c installed to be power-transmittable by the main shafts and worm gears of the sample guide rolls 15a and b and provided on one side of an open surface of the housing 10; Working motors 12a and b fixed to upper and lower end surfaces of the housing 10 and having a rotating shaft disposed therethrough; Surface inspection of the plated product using the grindstone, characterized in that it comprises a plurality of grindstones (14,18) fixed to the rotating shaft of the operating motor (12a, b) and the contact drive on the upper and lower surfaces of the sample (17) Device. The surface precision of the plated product using the grindstone according to claim 1, wherein the grindstones (14, 18) have an equilateral triangle-shaped arrangement so as to widen the contact area, and the three grindstones are installed so as to rotate in parallel. Inspection device. The method of claim 1, wherein the contact guide portion 15c made of rubber is formed adjacent to both ends of the sample guide rolls 15a and b so as to be compressed and moved to the sample 17. Surface inspection device for plating products.