JPH023922B2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose A large number of discs with brushes attached around them are lined up and inserted into a mandrel to form an attached roll-shaped brush, and the shaft is installed on the machine body and rotated, and the brushes are attached to a metal plate. Apparatuses for press-welding and polishing and cleaning are already in general use. In this polishing work, polishing is more effective when the brush tip and the metal plate make surface contact and widen the contact width rather than making point contact. state. In this case, the larger the contact width, the better the working efficiency, but the more abrasion of the bristles is. Therefore, it is necessary to appropriately adjust the degree of contact between the bristles and the plate surface to increase polishing efficiency and avoid abrasion of the bristles as much as possible. Must be.

As the work continues, the tips of the brushes inevitably wear out gradually, so it is necessary to push down the roll from time to time to bring the tips of the brushes into pressure contact with the plate surface, and to make adjustments to maintain proper surface contact. When the brush is new, you can tell how many millimeters the roll should be lowered based on its length, but if the bristles are worn, you don't know the exact length, so you have to figure out a reference point to determine how many millimeters you should lower the roll. No. The present invention has been devised for this purpose, and is a device that electrically detects the moment when a worn brush comes into contact with the low crawl roll, and can appropriately adjust the degree of reduction of the brush. It is.

Structure A conductor thin wire 4 such as an ultra-fine copper wire is wrapped around the outermost brush 1' of the parallel brushes 1 of the brush roll in a spiral manner or covered in a braided manner. The disk 2' is made of an electrical insulator.

An electric insulating cap 6 is fitted around the flange 5 at the end of the mandrel 3, and annular conductive plates 7 and 8 such as copper plates are attached to the outer and inner surfaces of the cap to expose them, and both plates are connected to a copper wire. An air cylinder 10 is installed horizontally at a position facing the outer conductive plate 7, and the head end of the piston rod 11 is covered with an electric conductor head 12 which is to be in contact with the outer conductive plate 7 at any time. The flexible electric wire 13 attached to the head is connected to a detection control box 14 via a power source, and the box, the machine frame, and the work roll 15 are electrically connected by a conductive wire 16.

Effect: Operates the air cylinder 10 to move the piston rod 1.
1 is projected, the head 12 at the top end comes into contact with the outer conductive plate 7. Next, when the brush roll is lowered, the moment the tip of the brush 1 contacts the work roll 15, the power supply, control box 14, flexible electric wire 13, head 12, outer conductive plates 7, 8, outermost brush 1', Since electricity is passed through the work roll 15 and the body of the machine, the point in time when the brush tip contacts the work roll 15 can be detected by observing the control box 14 (FIG. 2). Therefore, all you have to do is measure from that point and lower the brush by an appropriate amount. In this way, according to the present device, the brush can be accurately and quickly adjusted downward, thereby improving the efficiency of the polishing work.

[Brief explanation of drawings]

1 and 2 are longitudinal sectional views of the device. 1 and 1' are brushes, 2 and 2' are disks, 3 is a mandrel, 4 is a thin conductor wire, 5 is a flange, 6 is a rim crown, 7 and 8 are conductive plates, 9 is a conductive wire, 10 is an air cylinder, 11 is the piston rod, 12 is the head,
13 is a flexible electric wire, 14 is a control box,
15 is a work roll.

Claims (1)

[Claims] 1. In a brush roll formed by arranging a large number of disks 2 with brushes 1 attached to the periphery, inserting them into a mandrel 3, and transferring them to the machine body, a fine conductor wire 4 is attached to the outermost brush 1' of the parallel brushes. At the same time, the disc 2' of the brush is made of an electrical insulator, and a cap 6 of an electrical insulator is applied around the flange 5 at the end of the mandrel 3, and an annular ring is formed on the outer and inner surfaces of the cap. The conductive plates 7 and 8 are attached and exposed, and both plates are connected to the conductive wire 9.
An air cylinder 10 is installed horizontally at a position facing the outer conductive plate 7, and a conductor head 12 that is to be in contact with the outer conductive plate 7 at any time is attached to the head end of the piston rod 11. The pressure contact point detection device is constructed by connecting the attached flexible electric wire 13 to a detection control box 14 via a power source, and electrically connecting the box to the machine frame and the work roll 15.