JPS6036342B2 - roller guide - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roller guide which is a guide device for accurately guiding a rolled material having a circular cross section, such as a round steel or steel pipe, to a rolling mill, deep scratch device, etc.

Wrapper guides and roller guides are well-known devices for guiding suitable material such as cylindrical rolled materials into conventional rolling mills and other similar equipment, but the former prevents scratches on the material due to sliding, seizure, and dimensional changes. There are problems such as the need to replace the guide and poor positioning accuracy due to the presence of a gap between the material and the guide.

For the latter type of roller guide, when dimensions are changed, the roller guide's mounting bolts are loosened, the position is adjusted for each roller, and then the bolts are tightened, or the roller position is adjusted by turning the eccentric shaft of the roller. It is. The purpose of the present invention was to solve the above-mentioned problems with roller guides, and it is an object of the present invention to provide an apparatus that quickly and accurately replaces guides.

The gist is that in a suitable material guiding device for a cylindrical rolled material, one end of each of three or more guides is rotatably supported by a pin attached to a support frame, and the other end of each of the guides is rotatably supported by a pin attached to a support frame. At the end, three or more guide loafs arranged on the same circle are rotatably attached, and the guides and the support frame are connected under tension to spread the guide rollers in the radial direction, A copying roll in which a size adjusting cam, in which a number of eccentric cams of the same shape equal to the number of the guide rollers are equally divided and arranged on the inner surface, is attached to the upper part of the guide and a support is placed below the support frame.

The roller guide is configured such that the size adjusting cam is rotatably supported by being sandwiched between three or more places by a roller, and the size adjusting cam is rotated by a drive device. The present invention will be explained in detail below using the drawings.

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway sectional view showing an embodiment of a variable-size roller guide according to the present invention, and FIG. 2 is a front view thereof. The illustrated embodiment shows a case in which deep flaws are performed online by a deep flaw device 11 on the exit side of a rolling mill, etc. In this case, the cylindrical rolled material 1 is properly placed in the same 0 state as possible for the flaw detection device 11. It is preferable.

Therefore, it is desirable that the guide can be guided in a non-contact and non-sliding state, and that it can be easily adjusted while maintaining the same properties for materials of various sizes. In order to satisfy the above requirements, the configuration of the guide lo-hu of the present invention is such that three guides 2 are arranged at equal intervals on the circumference 1200 and are rotatably supported by pins 5 on a support frame 4, and each guide is provided at the tip of each guide. The guide low-foo 3 is rotatably mounted, and a copying roller 6 is further mounted, and furthermore, the copying roller 6 is connected to a size adjusting cam 7, which will be described later.
A spring 8 is attached to draw the terminal so that it is always in contact with the terminal.

The size adjustment cam 7 is rotatably supported by the copying roller 6 and a support roller 101 attached to the support frame 4, and is rotated in the circumferential direction by a size adjustment cam drive device 9.
It is possible to easily and accurately displace the three guide rolls simultaneously in the same zero state in proportion to the amount of radial displacement of the size adjustment cam from the rotation center due to the rotation angle. For size adjustment, it is also possible to take in the size information of the material and perform position detection using an encoder or the like combined with the size adjustment cam drive device 9, thereby automatically adjusting the size with high precision. In this embodiment, the guide 2 and frame 4 are connected under tension with a spring, but other means such as a hydraulic cylinder may be used as long as they provide a tensile force that spreads the guide roller 3 in the radial direction of the rolled material. . Further, although the size adjusting cam 7 is configured to mesh with the size adjusting cam driving device 9 and rotate by a gear, it is of course possible to use a chain or a belt. Although the example describes the case where three guide rollers are arranged at 120 degrees on the circumference, it is also possible to install four or more guide rollers at any position on the circumference, and the number and shape of the guide rollers can be changed. By changing it, it can also be applied to square steel.

As explained above, the present invention provides a method for adjusting a plurality of guides by rotating a size adjusting cam.

- It is possible to easily set the rollers on the same circle, and it is possible to change the size of the rolled material automatically in a short time, and there is no need to prepare many types of guides depending on the size. It also has a huge effect in terms of productivity and economy.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway sectional view showing an embodiment of a size variable roller guide according to the present invention, and FIG. 2 is a front view thereof. DESCRIPTION OF SYMBOLS 1... Cylindrical rolled material, 2... Guide, 3... Guide low foot, 4... Support frame, 5...・．． ．． Fulcrum, 6...Imitate Lofu,
7...Size adjustment cam, 8...Spring, 9
...Size adjustment cam drive device, 10...
・Support lo-fu, 11... Flaw detection device. Soup, illustration 2 diagrams

Claims (1)

[Claims] 1. In a material passing guide device for cylindrical rolled material, one end of each of three or more guides 2 is rotatably supported by a pin 5 attached to a support frame 4, and the other end of each of the guides 2 is rotatably supported by a pin 5 attached to a support frame 4. At the same time, three or more guide rollers 3 arranged concentrically are rotatably attached to the section, and the guide 2 and the support frame 4 are connected under tension so that the guide rollers 3 are spread out in the radial direction. A size adjusting cam 7, in which a number of eccentric cams of the same shape as the guide rollers 3 are equally divided and arranged on the inner surface, is attached below the copying roll 6 attached to the upper part of the guide 2 and the support frame 4. A roller guide characterized in that the size adjusting cam is rotatably supported by being sandwiched between three or more locations by a support roll 10, and the size adjusting cam is rotated by a drive device 9.