JPH0328963Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a guide device for a flat steel rolling mill that can easily accommodate changes in the dimensions of the flat steel rolling mill.

(Prior art) Conventionally, the guide device used for rolling flat steel has an entry guide fixed to a guide box.
There is no means for adjusting the hole size of the guide groove for guiding the rolled material to the guide roller. For this reason, when the vertical dimension of a flat bar changes, the reality is that it is replaced with a guide device equipped with an entry guide that matches the vertical dimension. Also, if the thickness of the flat steel changes significantly, replace the guide device with one that matches the thickness, and if the thickness does not change significantly,
The guide rollers and entry guides were replaced with ones with holes that matched the thickness of the flat steel to be rolled to accommodate dimensional changes.

(Problem to be solved by the invention) According to the conventional guide device, every time the dimensions of the flat steel to be rolled are changed, it is necessary to replace the guide device with a guide roller and entry guide that match the dimensions. However, each time the size of the rolled material is changed, the guide device must be removed from the rolling line and reinstalled for adjustment, which is a hassle. In particular, flat steel tends to be produced in a wide variety of small quantities, which means that guide devices must be replaced more often, and rolling equipment has to be shut down accordingly, causing a decline in the operating rate of factory equipment. The number of guide devices that must be prepared must also increase, leading to higher equipment costs. For this reason, there has been a desire for a versatile guide device for changing the size of flat steel.

The purpose of this invention is to make it possible to easily adjust the hole shape dimensions of the guide groove of the entry guide, thereby making it possible to respond to changes in the dimensions of the flat steel with one device, thereby reducing equipment costs. The aim is to reduce the amount of energy used and improve the operating rate of factory equipment.

(Means for Solving the Problems) In the present invention, a pair of upper roller holders and a pair of lower rollers are swingably supported in a guide box, and a guide roller is pivotally supported on one end side by a roller pin. The holder, the pair of upper roller holders and the pair of lower roller holders are inserted in the vertical direction, and a fulcrum pin serving as a pivot center of the upper roller holder and the lower roller holder is inserted inside the upper roller holder and the lower roller holder. The entry guide is composed of four guide members each having an L-shaped cross section and is fixed by adjustment screws, and has a guide groove that forms a hole through which the rolled material passes. The guide member is provided with vertical dimension adjusting means for adjusting the height of the hole shape of the guide member and thickness adjustment means for adjusting the width of the hole shape.

The vertical dimension adjustment means includes a vertical adjustment screw that is vertically movably attached to the ceiling of the guide box above the upper roller holder. The rotation of the upper roller holder allows the upper roller holder to move up and down. The thickness adjustment means mentioned above is
A worm gear provided on the guide box, a worm wheel meshing with the worm gear, a rotation transmitting body provided on the back side of the worm wheel, and a worm connected to the worm wheel via the rotation transmitting body. It has an eccentric shaft whose axis is eccentric from the center of rotation of the wheel. The eccentric shaft is inserted into the other ends of the upper roller holder and the lower roller holder in the vertical direction. The eccentric shaft and the roller holders of the upper and lower parts are in a relationship such that the roller holder swings and follows the fulcrum pin as the eccentric shaft rotates. The fulcrum pin and the eccentric shaft constitute vertical movement guide means for the upper roller holder. The eccentric shaft is disposed on the opposite side of the roller pin with respect to the fulcrum pin. The vertical adjustment screw is provided at an intermediate position between the fulcrum pins arranged in parallel.

(Function) When the vertical adjustment screw is turned, the upper roller holder moves up and down using the fulcrum pin and eccentric shaft as common guides. For this reason, the upper guide member attached to the upper roller holder moves up and down, which changes the vertical dimension of the hole shape of the guide groove, and therefore changes the vertical dimension of the rolled material depending on the amount of rotation of the vertical adjustment screw. Can correspond to

Due to the rotation of the wormshaft, the wormwheels rotate by the same amount in opposite directions via the worm gear, and due to eccentric deviation, the roller holder that supports the wormshaft and the upper and lower guide members rotate around the fulcrum pin. The guide roller swings to adjust the center-to-center distance of the guide rollers and at the same time adjust the width of the hole formed by the guide groove, that is, the thickness of the rolled material.

(Example) Examples of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, the guide box 1 consists of a rectangular cylinder whose cross section perpendicular to the direction of movement of the rolled material F is slightly elongated, and a pair of upper and lower roller holders 2a, 2b and an entry guide are installed in this guide box. 3 is rotatably supported around fulcrum pins 4, 4.

The upper roller holders 2a, 2a have first, second, fourth
As shown in the figure, the upper pushers 5a, 5a and the pusher lock nut 6 are fitted onto the fulcrum pins 4, 4.
a, 6a to the top plate 7. The lower roller holders 2b, 2b are supported at the bottom of the guide box 1 by pushers 5b, 5b and lock nuts 6b, 6b.

Guide rollers 8, 8, .
These four guide rollers 8 are prevented from coming off the roller pins by lock nuts 10. roller pin 9
, the threaded part at one end is the upper roller holder 2a, 2a.
The lower guide rollers 2b and 2b are vertically penetrated and protruded, and the protruding portions are fixed to the roller holder by nuts 11. upper roller holder 2a,
2a and the lower guide rollers 2b, 2b are provided with nose guides 12, 12, .
It is shaped so that it can be approached to the R entrance hole.

The entry guide 3 includes four guide members 3a, 3a, 3 each having an L-shaped cross section as shown in the second and third figures.
b, 3b, and these guide members form one cylinder. The upper and lower guide members face each other and are fixed inside the roller holders 2a and 2b, and the horizontally adjacent guide members are spaced apart from each other by a predetermined distance to form guide grooves 3c. This hole is formed over the entire length of the entry guide, and the vertical dimension of the hole is parallel from the vicinity of the guide rollers 8, 8 to the axial support of the fulcrum pin 4. There is a gentle slope up to the entrance (right end in Figures 1 and 4). Roller holder 2 of each guide member 3a, 3b
As shown in the second figure, the fixing means for fixing to a and 2b uses an adjusting screw 13 and a pusher 14, which are removably fixed by a flange 13a of the adjusting screw and a pin (not shown). The upper and lower roller holders 2a, 2b are held between the collar 13b, and the threaded portion 13c at the tip is connected to each guide member 3a, 3.
The roller holder and entry guide 3 are integrally connected by screwing into the side portion of b. Holes 1a, 1a for turning the adjusting screw are provided at positions in the guide box 1 facing the adjusting screw 13, respectively.

Here, the configuration of the adjusting means for the guide groove 3c of the entry guide will be explained. This adjustment means can be roughly divided into two types: vertical dimension adjustment means A for responding to changes in the longitudinal dimension of the rolled material F, and thickness adjustment means B for responding to changes in the thickness of the rolled material.

First, to explain the specific configuration of the vertical dimension adjustment means A, a vertical adjustment screw 15 screwed into a female thread formed at a midpoint between both fulcrum pins 4, 4 on the ceiling of the guide box 1 is installed inside the guide box. It is screwed together with the top plate 7, and its lower end passes through the top plate 7. The top plate is held between a nut 16 with a split pin hole and a flange 15a of the vertical adjustment screw 15, so that the top plate moves up and down as the vertical adjustment screw 15 moves up and down. 17 is a countersunk screw.

Next, to adjust the vertical dimension of the guide groove, use the vertical adjustment screw 1.
5 is rotated according to the amount of adjustment, the top plate 7 moves up and down, and the upper roller holder 2a and upper guide member 3a connected thereto also adjust the vertical dimension D of the hole shape of the guide groove. do.

As shown in FIGS. 1, 3, and 4, the thickness adjusting means B has a worm shaft 19 pivotally supported by a pedestal 18 provided on the guide box 1, and is formed integrally with the worm gear shaft. Worm gear 19 with leads in opposite directions
a, 19a, and eccentric shafts 21, 21 which pivotally support worm wheels 20, 20 meshing with the worm gear. eccentric shaft 21,
Eccentric pieces 21a and 21b each having a circular cross section and having different center positions are inserted through the upper and lower sides of the guide box 1, respectively, and are integral with the eccentric shaft at positions corresponding to the shaft support portions of the guide box. It is equipped with eccentric shaft 21,
21 are inserted into the upper and lower roller holders 2a, 2b, respectively, and the roller holders 2a, 2b are supported to be swingable around the fulcrum pins 4, 4 by rotation of the eccentric beads 21a, 21b.

For adjusting the thickness dimension, see Wormshaft 19.
When rotated, the worm gears 19a, 19a,
Worm wheels 20, 20, eccentric shafts 21, 21
The roller holders 2a, 2b and the entry guide 3 swing through the fulcrum pins 4, 4, and the hole width T of the entry guide provided at the opposite side of the fulcrum pins 4, 4 is adjusted.
increase or decrease. At this time, the distance between the centers of the guide rollers 8, 8 is also adjusted at the same time.

The method of using the present invention is to bring the tip of the nose guide 12 close to the rolling rolls R, R, and press the guide box 1.
, and rotate the vertical adjustment screw 15 and worm shaft 19 according to the size of the flat steel that is the rolled material, feed the rolled material F from the entrance of the entry guide (right side in Figures 1 and 4), and then move the rolled material F to the guide roller 8. ，
8 and then guided to rolling rolls R and R for rolling.

Fine adjustment of the width T of the hole shape of the guide groove is performed by turning the adjustment screw 13.

(Effects of the invention) According to the invention, with the length and thickness adjustment means, it is possible to change the size of the rolled material with one guiding device, so it is possible to change the size of the rolled material by changing the size, which was previously done. The number of replacements of guide devices can be significantly reduced, and the number of guide devices that need to be prepared for rolling flat steel, which tends to be produced in a wide variety of small quantities, can be reduced, so equipment costs can be saved. Since the troublesome effort of replacing the guide device can be omitted, it is possible to reduce the downtime of the rolling line, thereby contributing to improving the operating rate of factory equipment. Dimensions can be adjusted in a short time using both of the adjustment means described above.

[Brief explanation of the drawing]

1 is a partially cutaway front view, FIG. 2 is a partially cutaway side view, FIG. 3 is a sectional view taken along the line taken from FIG. 1, and FIG. 4 is a plan view. DESCRIPTION OF SYMBOLS 1... Guide box, 2a... Upper roller holder, 2b... Lower roller holder, 3... Entry guide, 3a, 3b... Guide member, 3c...
... Guide groove, 4 ... Fulcrum pin, 7 ... Top plate, 8 ... Guide roller, 13 ... Adjustment screw, 1
5... Vertical adjustment screw, 19... Worm shaft, 19a... Worm gear, 20... Worm wheel, 21... Eccentric shaft, 21a, 21b...
Rotation transmitting body (extreme piece), A...Vertical dimension adjustment means, B...Thickness adjustment means, F...Rolled material.

Claims (1)

[Scope of claim for utility model registration] Supported in a swingable manner within a guide box,
A pair of upper roller holders and a pair of lower roller holders each having a guide roller pivotally supported by a roller pin on one end side, each of the above-mentioned upper roller holders and each lower roller holder are inserted in the vertical direction, and the above-mentioned upper roller holder and the lower It is composed of a fulcrum pin that is the center of swing of the roller holder, and four guide members with an L-shaped cross section that are fixed to the inside of the upper roller holder and the lower roller holder with adjustment screws, and the rolled material passes through the guide members. an entry guide provided with a guide groove in which a hole shape is formed; a vertical dimension adjustment means for vertically moving the upper roller holder to adjust the height of the hole shape of the guide member; and a width of the hole shape. and a thickness adjustment means for adjusting the vertical dimension, and the vertical dimension adjustment means includes a vertical adjustment screw that is vertically movably attached to the ceiling of the guide box above the upper roller holder, The vertical adjustment screw and the upper roller holder are in a relationship such that the upper roller holder can be moved up and down by rotation of the vertical adjustment screw. a worm wheel meshing with the worm wheel; a rotation transmitting body provided on the back side of the worm wheel; and a rotation transmitting body connected to the worm wheel through the rotation transmitting body and having an axis eccentric from the rotation center of the worm wheel. The eccentric shaft is inserted into the other ends of the upper roller holder and the lower roller holder in the vertical direction, and the eccentric shaft and the roller holders of the upper and lower parts are connected to the eccentric shaft. The rotation of the shaft causes the roller holder to swing and follow the fulcrum pin, and the fulcrum pin and eccentric shaft constitute vertical movement guide means for the upper roller holder. A guide for a flat steel rolling mill, characterized in that the guide is arranged on the opposite side of the roller pin with respect to the fulcrum pin, and the vertical adjustment screw is provided at an intermediate position between the fulcrum pins arranged in parallel. Device.