JPH0199711A - Guide - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a guide for guiding a flat material to be rolled, which is fed toward a rolling mill, to rolling rolls built into the rolling mill. The present invention relates to a guide that can effectively prevent twisting of a material to be rolled during rolling, and can also quickly adjust the spacing when changing the order of the material to be rolled.

Prior Art As a means of manufacturing a long plate material having a rectangular cross section from a base material (such as a billet), there is provided a rolling mill equipped with each pair of horizontal rolls for horizontally rolling a material to be rolled, and A rolling line is used in which rolling mills each equipped with a pair of vertical rolls that carry out vertical rolling with a phase difference of 90" are arranged at predetermined intervals from upstream to downstream. A plate material rolled to a predetermined size is manufactured by passing the rolled material linearly through a rolling line made up of the plurality of rolling mills described above and sending it out while being compressed by each rolling roll.

By the way, most of the plate-shaped steel materials obtained by rolling are processed into various final products by secondary processing manufacturers and tertiary processing manufacturers, and are widely used in many industrial fields. It is something. The above-mentioned processing manufacturers, which are the users of these plate materials, generally use the delivered plate materials as materials for cold forging or warm forging, and heat-treat them as necessary.

Processing manufacturers apply the necessary forming processes to the plate material, such as drawing and cutting processes, so the cross section of the plate material is rectangular with approximately right angles at the edges. is required.

By the way, since enormous pressure is applied to the material to be rolled during rolling, it is especially important to pass the long material in the form of a flat plate through horizontal rolls with the small side facing down and the large side facing up. when rolling.

It is necessary to feed the material to be rolled to the rolling rolls in a normal state. However, for example, if the material to be rolled is fed in an inclined state with respect to the rolling rolls, the imbalance between left and right pressures causes the material to be twisted, and its longitudinal dimensions and shape to vary. In this case, the deformed portion must be removed or corrected by grinding, which poses a problem that this operation takes time and reduces the number of steps.

Therefore, by providing a necessary guide on the upstream side of the rolling mill, guiding the material to be rolled to the rolling rolls in the correct posture through this guide, and supporting the material being fed, the twisting of the material during rolling can be avoided. Measures have been taken to prevent
For example, as shown in FIGS. 6 and 7, this guide 1
0 is a pair of rolling rolls 12.0 arranged vertically in parallel.
The material 18 to be rolled is guided linearly towards the rolling rolls 12.14 by passing the material 18 through a guide passage 16 disposed upstream of the roll 14 and defined in the guide 10. There is.

That is, a rectangular frame 22 is removably disposed on a base 20 on the upstream side of the rolling rolls 12. The space is defined. In this space, as shown in FIG. 6, a pair of guide frames 26.2
6 are vertically arranged so as to be movable toward and away from each other in a direction orthogonal to the feeding direction of the material to be rolled 18. Further, a plurality of bolts 30 are screwed into the left and right side plates 22a and 22b of the frame 22, respectively, and their tips are connected to the back sides of both guide frames 26.26 (both guide frames 26.2
6). Therefore, each bolt 30 is connected to the side plate 22a.

22b is screwed toward the guide frame side, both guide frames 26, 26 are pressed by the bolt 30 and come close to each other. Note that the height of the guide frames 26, 26 is set to be sufficiently larger than the height of the rolled material 18 being passed through.

Furthermore, spacers 32 and 33, which are set to the width dimension and the width dimension of the material to be rolled 18 and the width dimension of the material to be rolled 18, are placed at a middle position in the width direction of the frame 22 at a predetermined interval vertically (longer than the height dimension of the material to be rolled 18). interval)#! It is removably arranged between the two. Then, by bringing the guide frames 26, 26 close to each other and sandwiching the spacers 32, 33, the material to be rolled 1 is placed in the frame 22 of the guide 10.
A guide passage 16 is defined that allows the passage of 8.

Guide members 34 and 36 each having the shape shown in the drawing are disposed on opposing side surfaces of the guide frames 26 and 26, spaced apart by a predetermined distance in the feeding direction of the material to be rolled 18. The guide member 36 disposed on the inlet side of the material to be rolled 18 is formed so that its end facing the inlet side expands outward, so that the material to be rolled 18 can easily flow into the guide passage 16. I can guide you.

Further, as shown in FIG. 7, the guide frame 26 has a storage section 37 that opens between the guide members 34 and 36, and a support shaft 38 that is perpendicular to the storage section 37 is disposed.

A guide roller 40 is rotatably supported on the support shaft 38, and a portion of the outer peripheral surface of the guide roller 40 slightly protrudes outward from the opening 37a of the storage portion 37. That is, the guide frame 26.26 and the spacer 32
Guide rollers 40, 40 face each other into the guide path 16 defined by the angle 33, and as will be described later, the material 18 to be rolled passing through the guide path 16 is guided from the left and right by these guide rollers 40, 40. It is configured to be guided in a pinched state.

When using the guide 10 configured in this way, first, a spacer 32, 33 set to the width dimension of the material to be rolled 18 and a spacer dimension is inserted between both guide frames 26, 26. A plurality of bolts 30 screwed into 22 are screwed in to bring both guide frames 26.26 close to each other, and spacer 32.33 is firmly held between both guide frames 28.26. As a result, a guide passage 16 having the width dimension of the material to be rolled 18 and the distance between the two guide frames 26 and 26 is defined.

Here, a part of the outer circumferential surface of the guide roller 40.40 protrudes from the opposing surface of the guide frame 26.26, so that the rolled material 18 passing through the guide passage 16 is directed to the guide roller 40.40 between the guide frames 26.26 and 26.26. Rolling rolls 12.14 while being pinched
You will be guided smoothly. Therefore, the material 18 to be rolled that is fed to the rolling rolls 12, 14 and rolled can be rolled normally without swinging from side to side. Note that the material to be rolled 18 is a guide roller 40, 40 that is arranged to rotate freely once.
The surface of the material will not be scratched or damaged.

Problems to be Solved by the Invention The guide configured as described above has two guide frames that are brought close to each other via a plurality of bolts screwed into the frames, and a spacer that is inserted between the two guide frames in advance. By pinching.

The spacing of the guide passages is adjusted. Therefore, if the width dimension of the material changes due to an order change of the material to be rolled, loosen the multiple bolts and remove the spacer, replace it with another spacer that corresponds to the width dimension of the material, and re-bolt the material. This required tightening work, which was extremely complicated and time consuming. In addition, if the pressing force of each bolt against the guide frame is not uniform, or if there is play in the threaded part between the bolt and the side plate, the position of the guide frame may change when a large force is applied to the guide roll by the material to be rolled. It has been pointed out that there is a problem in which the deviation greatly affects the product shape of the rolled material.

Purpose of the Invention The present invention has been proposed in view of the above-mentioned drawbacks inherent in the guide for guiding the material to be rolled into a rolling mill, and has been proposed to suitably solve this problem. It is an object of the present invention to provide a new guide that supports the rolling stock and allows the guide spacing to be quickly adjusted under conditions similar to those during rolling of a material to be rolled.

Means for Solving the Problems In order to overcome the above-mentioned problems and achieve the intended purpose, the present invention provides a method for rolling a material into a predetermined cross-sectional shape by passing the material through rolling rolls while being compressed. A guide disposed on the upstream side of a rolling mill for rolling, linearly guiding the material to be rolled toward the rolling rolls, and within a space defined by a frame i and communicating with the feeding direction of the material to be rolled. , a pair of guide frames parallel to the feeding direction of the material to be rolled are arranged so as to be movable toward and away from each other while maintaining a parallel relationship with each other via a moving mechanism, and both guide frames arranged on the frames; On the back side of the frame, each holder is rotatably supported on a fixed shaft arranged perpendicularly to the frame, and a part of the outer peripheral surface of a guide roller rotatably arranged at the free end of the holder is supported on both sides. The holder faces into the guide path defined by the guide frame, and a support shaft for pivotally supporting the guide roller is slidably inserted into a long groove drilled in the guide frame, and the holders are spaced apart from each other between the holders. The present invention is characterized in that a plurality of actuators are provided that can be biased in a direction in which it is suppressed.

Embodiments Next, a guide according to the present invention will be described below with reference to preferred embodiments and the accompanying drawings.

The basic configuration of the guide according to this embodiment is the same as the guide according to the prior art described in connection with FIGS. 6 and 7, so the same reference numerals will be used to refer to the same members that have already been shown. However, detailed explanation thereof will be omitted.

As shown in FIGS. 1 and 2, the left and right side plates 22a of the frame 22 are formed into a rectangular shape.

Between 22b, there are four screw shafts 4 with male threads cut in opposite directions.
2 are installed rotatably. In addition, each screw shaft 4
2 is disposed at a position where there is no hindrance to the passage of the material to be rolled 18 and where it can be screwed into a guide frame 26, which will be described later.

A pulley 44 is provided at each end of each screw shaft 42 projecting outward from one side plate 22a, and a timing belt 46 is wound around this group of pulleys. A handle 48 is disposed on one of the screw shafts 42, and by operating this handle 48, all the screw shafts 42 are rotated in the same direction.

In a space defined by the frame 22, a pair of guide frames 26, 26, which will be described later, are arranged facing each other.

This guide frame 26.26 has male threaded portions 42a, 42 in which the left and right threading directions of the threaded shaft 42 are different.
A screw is inserted into each part b. With this configuration, when the handle 48 is rotated in a predetermined direction, both guide frames 26, 26 move toward or away from each other while maintaining a parallel relationship with each other depending on the direction of rotation. The width spacing of the guide passage 16 defined by .26 can be adjusted.

As shown in the drawings, vertical fixed shafts 50, 50 perpendicular to the screw shaft 42 are disposed inside one side plate 22a, 22b at a predetermined distance in the width direction.

Further inwardly of the fixed shaft 50.50, a pair of guide frames 26.26 are screwed into the plurality of screw shafts 42 and movable toward and away from each other in the feeding direction of the material to be rolled 18. is placed parallel to.

Note that the guide frames 26.26 are constructed symmetrically, so the guide frames 26, 26 disposed on the right side in FIG.
Only 6 will be explained.

On the back side of the guide frame 26 (the side opposite to the side facing the mutually opposing guide frames 26).

A vertical groove 54 that is open vertically is bored, and a fixed shaft 50 faces into this vertical groove 54 so as to be freely insertable and removable.

Further, a storage section 56 is formed in the guide frame 26 and is connected to the vertical groove 54 and opens to the back side.
a is defined. Note that guide members 34 and 36 are disposed on the front side of the guide frame 26 on the side in the feeding direction of the material to be rolled 18 with the opening 56a in between.

As shown in FIG. 1, a holder 58 having the shape shown in the figure is rotatably supported on the fixed shaft 50, and the holder 58 is housed in a housing portion 56 defined in the guide frame 26.

At the free end of this holder 58, there is a support piece 58a vertically spaced apart by a predetermined distance.

58a are formed in parallel, and the guide roller 40 is rotatably supported via a support shaft 60 between both support pieces 58a, 58a.

The upper and lower ends 60a, 60a of this support shaft 60 are connected to the support piece 5.
Long grooves 62 projecting upward and downward from 8a and 58a and bored in both upper and lower surfaces of the storage section 56 in parallel to the feeding direction of the material to be rolled 18.
, 62 (see FIG. 3). Note that when the support shaft 60 is fitted into the long groove 62.62, a part of the outer peripheral surface of the guide roller 40 is inserted into the opening 56a.
The dimensions are set so that it looks prominently from the outside. As a result, as shown in FIG. 5, when both guide frames 26 and 26 are moved close to each other, the vertical shaft 60 slides in the long groove 62 to allow rotation of the holder 58, and the guide roller 40
There is no change in the amount of protrusion from the opening 56a.

As shown in Figures 3 to 5, one guide frame 26.2
Rams 64b and 64 are mounted between the holders 58 and 6 on the opposing surfaces of the holders 58 and 58, respectively, at vertical positions that do not impede the passage of the material 18 to be rolled.
A cylinder 64°64 capable of pressing b is provided. This cylinder 64 is a hydraulic cylinder, and by pressurizing water through a supply pipe 66 provided at the center of the cylinder 64, rams 64 disposed at both ends of the barrel 64a
4b.

64b to the holders 58, 58, both holders 58°5
8 in the direction of separating them from each other.

Here, both holders 58° 58 by cylinder 64.64
By setting the pressing force to be the same as the pressure applied to both guide rollers 40 and 40 when the material to be rolled 18 is rolled, the interval adjustment of the guide passages 16 can be adjusted to the state in actual use. It can be done under similar conditions. Note that even if the pressing force of the two cylinders 64, 64 is set to a value lower than the pressure that the material 18 to be rolled applies to the guide rollers 40, 40, the backlash generated from the mechanical part of the guide according to this embodiment can be reduced. This allows you to approximate the state in which it is actually used.

Function of the Embodiment Next, the actual use of the embodiment of the present invention constructed as described above will be explained. As shown in FIG. 4, by rotating the handle 48 disposed on the screw shaft 42 in a predetermined direction to move the two guide frames 26.26 that are separated from each other, the two guide frames 26.26 can be brought close to each other and roughly adjusted. Make adjustments. Next, water is pressurized into the hydraulic cylinders 64, 64, and rams 64b, 64b are disposed at both ends of the barrel 64a.
are made to protrude, respectively, so that both guide frames 26°2
Both holders 58 and 58 housed in 6 are pressed in the direction of separating them from each other. Then, measure the distance between both rollers 40, 40 at this time, and if this value is a predetermined distance (an interval corresponding to the width dimension of the material to be rolled 18), reduce the water pressure of the hydraulic cylinders 64, 64. If this value is different from the predetermined interval, the handle 48 is operated to readjust the interval.

As described above, the pressing force by the cylinder 64 is applied to the guide rollers 40 and 4 by the material 18 to be rolled during rolling.
Since the applied pressure is set to 0 and the path is set to -, a practically suitable spacing adjustment can be made. Also, both holders 58.
By pressing 58, it is possible to eliminate looseness at the threaded portion between the guide frame 26 and the screw shaft 42.

As shown in FIG. 5, when the guide frames 26 and 26 are brought close to each other, the holder 58 pivoted on the fixed shaft 50 is detached from the storage section 56 of the guide frame 26, but the vertical shaft 60 disposed at its free end are fitted into the long grooves 62, 62 bored in the guide frame 26, so the holder 5
8 rotates in a predetermined direction about the fixed shaft 50, but the amount of protrusion of the guide roll 40 from the opening 56a does not change.

When the material 18 to be rolled passes through the guide path 16 defined by both guide frames 26.26, the material 18
As shown in FIG. 5, it is held between guide rollers 40, 40 facing into the guide passage 16, and is guided while rotating the rollers 40, 40 to regulate its position in the left and right direction. As a result, the material to be rolled 18 is transferred to the rolling rolls 12.14.
guided in a straight line between. Here, rolling roll 12.1
If twisting occurs due to various reasons in the rolled material 18 guided by the guide rollers 40, 40, an excessive force will be applied to the guide rollers 40, 40, which are disposed on the frame 22. Since it is supported by the fixed shaft 5o,
The guide roller 40 can correct the twist of the material 18 and feed the material 18 without causing any displacement.

Effects of the Invention As described above, according to the guide according to the present invention, the interval between the guides can be quickly adjusted without replacing the spacer every time an order is changed as in the conventional case, and the cycle time can be significantly shortened. can be achieved. Further, since the interval adjustment is performed under conditions similar to the usage conditions, it is possible to perform accurate adjustment that is actually suitable.

Furthermore, since the guide roll is supported by a holder that is pivoted to a fixed shaft provided in the frame, even if an excessive force is applied to the guide roller, the guide roller will not be misaligned. Therefore, the material to be rolled can be stably supported.

[Brief explanation of the drawing]

The drawings show a preferred embodiment of the guide according to the present invention, and FIG. The rear view of the guide, Figure 3 is a central vertical sectional view of the guide shown in Figure 1, Figure 4 is a rear view of the guide.
The figure is a cross-sectional view of both guide frames of this embodiment in a state where they are separated, FIG. 5 is a cross-sectional view of both guide frames of this embodiment in a state that they are close to each other, and FIG. 6 is a rear view of a guide according to the prior art. , FIG. 7 is a central vertical sectional view of the guide shown in FIG. 6. 12.14... Rolling roll 16... Guide passage 18
... Rolled material 22 ... Frame 26 ...
・Guide frame 40...Guide roller 42...
・Screw shaft 44...Pulley 46...Timing belt 48...Handle 50...Fixed shaft
58...Holder 60...Spindle
62...Daido Special Steel Co., Ltd.-/1%-FIo, 6 16...Guide passage 18...Material to be rolled 40.
...Guide roller 42...Screw shaft 48...Handle I02 22...Frame 26...Guide frame 46
···Timing belt

Claims (1)

[Claims] [1] The material to be rolled (18) is rolled by rolling rolls (12, 14)
disposed on the upstream side of a rolling mill that rolls the material (18) into a predetermined cross-sectional shape by passing it through while being compressed by a rolling mill;
A guide that linearly guides the material to be rolled (18) toward the rolling rolls (12, 14), and a space defined in the frame (22) that communicates with the feeding direction of the material to be rolled (18). Inside, a pair of guide frames (26, 26) parallel to the feeding direction of the material to be rolled (18) are maintained in a parallel relationship with each other via a moving mechanism (42, 44, 46, 48). Both guide frames (2
On the back side of the frames (6, 26), the holders (5
8, 58), and a part of the outer peripheral surface of a guide roller (40) rotatably disposed at the free end of this holder (58) is supported by both guide frames (26, 26). The vertical shaft (60) facing the defined guide passage (16) and pivotally supporting the guide roller (40) is slidably fitted into the long grooves (62, 62) bored in the guide frame (26). Insert the holders (58, 58) between the holders (58, 58).
) in a direction that separates them from each other. [2] The moving mechanism is rotatably installed between the left and right side plates (22a, 22b) of the frame (22), and the guide frames (26, 26 ) into which a plurality of screw shafts (42) are screwed, and a pulley (
44), a timing belt (46) wound around the pulley group, and a handle (48) disposed on the screw shaft (42). guide.