JPH06134520A - Roll leveler - Google Patents

Abstract

PURPOSE:To provide a roll leveler which can remarkably improve a work efficiency of a precise adjusting work by reducing the number of handles required for operation. CONSTITUTION:This roll leveler is provided with an upper roller frame 8 freely movable forward and backward mounted between slide blocks 22, 22A being movable up and down which is vertically inserted with respective plural guide shafts 21, 21A, 21B, 21C and is vertically movable by energizing a repulsive pressure in the front and the rear part of a lower roller frame 4 and holder blocks 24, 24A to which a pair of slide blocks 22, 22A are mutually faced, a rotationable upper roller 10 which is arranged in the front and rear direction on the lower surface of the upper roller frame 8 and formed in a zigzag arrangement mutually with plural lower rollers 1 being proximate through a clearance, and two numbers of adjusting screws 28 moving up and down the upper roller frame 8 being pressed with moving up and down based on the rotary operation are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention corrects the curl of a band-shaped metal material (hoop material) wound in a roll shape (curling) before press working, and suppresses distortion of parts generated during press punching. The present invention relates to improvement of the structure of a roll leveler for straightening.

[0002]

2. Description of the Related Art A conventional roll leveler is shown in FIGS.
As shown in FIG. 5, an end portion of a strip-shaped metal material (not shown) wound in a roll shape is inserted from a front inlet 16a between a plurality of upper rollers 10 and a lower roller 1 which face each other, This strip-shaped metal material is discharged from the rear outlet 16b to correct the curl.

As shown in FIG. 3, the plurality of lower rollers 1 are arranged side by side in the front-rear direction of the roll leveler (in the left-right direction of FIG. 3), in other words, in the inlet / outlet direction in a horizontal state, and are opposed to each other. It is pivotally mounted between the roller receivers 2.

As shown in the figure, the pair of lower roller receivers 2 are provided with a lower roller frame 4 via a plurality of bolts 3.
The lower roller frame 4 is screwed onto the upper surface of the base 5, and the lower roller frame 4 is mounted on the upper surface of the base 5.

The mounted lower roller frame 4 is shown in FIG.
As shown in FIG. 5, screw holes 4a communicating with the screw holes 5a of the base 5 are formed longitudinally on both front and rear sides thereof, and the screw 6a at the lower end of the mounting bolt 6 is vertically screwed into the plurality of screw holes 4a. The screw 6a of the mounting bolt 6 is screwed into the screw hole 5a of the base 5.

The plurality of vertically mounted mounting bolts 6
As shown in the figure, a flange portion 6b located above the screw 5a is provided around the lower part of the peripheral surface thereof so as to have an enlarged diameter, and the flange portion 6b is placed on the surface of the lower roller frame 4 in an overlapping manner. .

Further, the levitation ribs 7 are fitted into the plurality of mounting bolts 6, respectively, and the vertically movable upper roller frame 8 which is elastically biased upward by the plurality of levitation ribs 7 is in a horizontal state. Is being traversed by.

As shown in FIG. 3, the plurality of levitation ribs 7 are wound in a coil shape, and the plurality of opposing upper rollers 1 are arranged.
It has a function of forming an appropriate gap between 0 and the lower roller 1.

Further, the upper roller frame 8 is formed in a substantially rectangular shape in a plane, and vertical through holes 8a penetrated by a plurality of mounting bolts 6 are respectively formed at four corners thereof, and the vertical through holes 8a are formed. The upper ends of the plurality of mounting bolts 6 penetrate vertically and project vertically upward. However, the upper roller frame 8 is located immediately above the lower roller frame 4, as shown in FIG.

On the lower surface of the upper roller frame 8 facing the lower roller frame 4, a pair of upper roller receivers 9 facing each other are screwed, and a plurality of upper roller receivers 9 are provided between the pair of upper roller receivers 9. The upper roller 10 is rotatably mounted.

As shown in FIGS. 3 and 4, the plurality of upper rollers 10 are arranged side by side in the horizontal direction in the front-rear direction of the roll leveler, in other words, in the inlet / outlet direction, as in the case of the lower roller 1, with a gap therebetween. And a plurality of lower rollers 1 adjacent to each other are alternately formed in a staggered arrangement.

However, the plurality of upper rollers 10 and the lower rollers 1 rotate through the universal joint 11 based on the driving of a driving device (not shown), and the winding habit of the strip-shaped metal material inserted from the front is folded back. It has a function of straightening and discharging the straightened strip-shaped metal material backward.

On the other hand, as shown in FIG. 3, the projecting upper ends of the plurality of mounting bolts 6 are threaded on their peripheral surfaces with screws 6c, respectively, and rotatable adjust handles 12 are respectively screwed on the screws 6c. Have been combined.

As shown in FIG. 3, the plurality of adjusting handles 12 are provided with a large-diameter body 12a to be gripped by an operator, and the center of the body 12a is fitted into the upper end of the mounting bolt 6. A hole 12b is formed longitudinally and a lower end surface of the spherical washer 1 fitted with the screw 6c of the mounting bolt 6.
2c is polymerized. A female screw 12d is threaded on the upper portion of the inner peripheral surface of the hole 12b, and a rotatable lock handle 13 is screwed to the female screw 12d.

Therefore, a plurality of adjusting handles 12
As shown in FIG. 3, the upper and lower rollers 8 move vertically while rotating in accordance with the operation of the operator, and vertically move the upper roller frame 8 directly below the pressure contact, and the distance between the plurality of upper rollers 10 and the lower rollers 1 or It has the function of adjusting the parallelism.

The adjusted distance or the parallelism thereof is displayed by a plurality (four in this example) of dial gauges 14, and the plurality of dial gauges 14 are arranged on the lower roller frame.

That is, the plurality of dial gauges 14 are shown in FIG.
As shown in FIG. 4, the upper part is attached to both sides (two left and right) of the front and rear surfaces of the upper roller frame 8 and arranged vertically to the bolts 15 on the front and rear sides of the lower roller frame 4, respectively. Bolts 15 are screwed into the bolt holes of the projecting portions on the front and rear sides of the lower roller frame 4 so as to be vertically movable from below.

On the other hand, as shown in FIGS. 3 and 4, the plurality of screwed lock handles 13 are provided with a small-diameter main body 13a which is gripped by an operator, and the main body 13a has a lower surface at the center thereof. A screw rod 13b that is screwed with the female screw 12d is vertically inserted.

Further, as shown in the figure, a box-shaped cover 16 having an open lower surface is attached to the upper surface of the above-mentioned base 5, and an inlet 16a through which a strip-shaped metal material is inserted is provided on the front surface of the cover 16. The opening is formed and the cover 16 is formed.
An outlet 16 for discharging the straightened strip-shaped metal material on the rear surface
The opening b is formed. The upper surface of the cover 16 is vertically penetrated by each of the plurality of adjust handles 12.

Therefore, in order to correct the winding habit of the strip-shaped metal material wound into a roll before pressing, the end portion of the strip-shaped metal material is covered between the rotating upper roller 10 and lower roller 1. It may be inserted through the entrance 16a.

Then, the strip-shaped metal material that has been inserted is nipped while being in sliding contact with the rotating upper roller 10 and the lower roller 1, and is sequentially folded back into a corrugated state between the upper roller 10 and the lower roller 1. The curl is corrected, discharged from the outlet 16b of the cover 16, and then supplied to a press machine (not shown).

By the way, in order to properly correct the band-shaped metal material, it is necessary to adjust the gap between the upper roller 10 and the lower roller 1 according to the material of the band-shaped metal material. More specifically, in this adjustment, the gap on the inlet side is made equal to the plate thickness of the strip-shaped metal material, the gap on the outlet side is made slightly smaller than the plate thickness of the strip-shaped metal material, and the row of the upper rollers 10 is inclined. Consists of work. However, this adjustment has been conventionally performed by the following two methods.

The first method is, as shown in FIGS. 3 and 4,
First, the left and right lock handles 13 located on the inlet side are respectively loosened, and while looking at the dial gauge 14, the left and right adjust handles 12 are individually rotated to vertically move the inlet side of the upper roller frame 8 to move the upper roller 10 and the lower portion. The gap on the inlet side with the roller 1 and its parallelism are adjusted.

When the adjustment work is completed, the loosened left and right lock handles 13 are tightened, and the left and right adjust handles 12 are also fixed, respectively, and then,
This is a method of adjusting the gap between the upper roller 10 and the lower roller 1 by performing the same work on the outlet side.

On the other hand, the second method is to improve a part of the structure of the roll leveler as shown in FIG.
7 is rotated to move the upper roller frame 8 up and down,
This is a method of adjusting the gap between the upper roller 10 and the lower roller 1 and the parallelism thereof.

That is, when the handle 17 is rotated,
The plurality of worms 18 fitted to the handle shaft 17a rotate, the worm wheels 19 meshing with the plurality of worms 18 rotate, and the column 2
The worm wheel 19 moves up and down by screwing with the male screw part 0, and the upper roller frame 8 moves up and down to move the upper roller 10
And the parallelism between the lower roller 1 and the lower roller 1 are adjusted.

As described above, the conventional adjustment of the gap between the upper roller 10 and the lower roller 1 is performed by one of the above two methods.

[0028]

The conventional roll leveler is constructed as described above, and when the gap between the upper roller 10 and the lower roller 1 is adjusted by adopting the first method,
Since a total of four adjust handles 12 must be rotated while looking at the dial gauge 14 and the parallelism between the left and right sides must be adjusted, a large reduction in work efficiency cannot be avoided.

When the second method is adopted and the worm gear is used to adjust the left and right adjusting screws at the same time, precise adjustment is extremely difficult due to a mechanical coupling factor such as gear backlash. It had the drawback of becoming difficult.

The present invention has been made in view of the above, and an object of the present invention is to provide a roll leveler capable of significantly improving the work efficiency of precision adjustment work by reducing the number of handles required for operation.

[0031]

In order to achieve the above-mentioned object in the present invention, a plurality of rotatable lower rollers arranged side by side in the front-rear direction on a lower roller frame, and a front portion of the lower roller frame. And a rear portion of the guide rods, a vertically movable block that is vertically penetrated by the plurality of guide rods and is biased upward by the guide rods, and is substantially horizontal between the opposing holder blocks of the pair of blocks. Upper roller frame that is placed in a state of being movable in the front-rear direction, and a plurality of lower rollers that are arranged side by side in the front-rear direction in the facing portion of the upper roller frame that opposes the lower roller frame and that are adjacent to each other with a gap therebetween. And a rotatable upper roller that alternately forms a staggered arrangement, and an adjustment mechanism that vertically moves the upper roller frame that is pressed and brought into contact with the upper roller frame. And a tool, moreover, so that to correct the curling tendency of the material is passed through a band-shaped material is wound between the upper roller and the lower roller.

[0032]

According to the present invention having the above-mentioned structure, the upper roller frame is pressed down while maintaining the horizontal state only by sequentially screwing the two adjusting tools arranged at the front and rear.

Further, even if the upper roller frame tilts in the front-rear direction due to inadequate operation, the upper roller frame moves in the horizontal front-rear direction between the pair of holder blocks and returns to the horizontal state. The clearance between the inlet side and the outlet side is adjusted while the frame and the lower roller frame are maintained in the horizontal parallel state.

Therefore, the work efficiency of the precision adjustment work can be significantly improved by reducing the number of handles required for the operation.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in FIGS. In the roll leveler according to the present invention, guide shafts 21, 21A, 21B, 21C are erected on the front, rear, left and right of a lower roller frame 4 provided with a lower roller 1, and the guide shafts 21, 21 in the front portion are provided.
The slide blocks 22 and 22A are respectively inserted into A and the guide shafts 21B and 21C in the rear part, and the upper roller frame 8 is provided between the pair of opposite holder blocks 24 and 24A of the slide blocks 22 and 22A. I am trying to put it on.

As shown in FIG. 1, the plurality of lower rollers 1 are arranged side by side in the front-rear direction of the roll leveler (in the left-right direction of FIG. 1), in other words, in the horizontal direction in the entrance / exit direction, and are opposed to each other. It is pivotally mounted between the roller receivers 2.

The pair of lower roller receivers 2 are connected to the lower roller frame 4 via a plurality of bolts 3 as shown in FIG.
The lower roller frame 4 is mounted on the upper surface of a flat rectangular base 5 via a plurality of bolts.

The mounted lower roller frame 4 is shown in FIG.
As shown in FIG. 2, guide shafts (guide rods) 21, 21A, 21B, and 21C are vertically erected vertically on both front and rear sides of the upper surface.
A flange portion 21a having an enlarged diameter is provided on the lower peripheral surface of 21B and 21C.
Are circumferentially provided, and the flange portions 21a are placed on the surface of the lower roller frame 4, respectively.

In addition, the guide shaft 21 at the front portion
21A and the guide shafts 21B and 21C in the rear portion are respectively fitted with the levitation ribs 7, and slide blocks (blocks) 22 and 22A that are constantly biased upward by the plurality of levitation ribs 7 can be moved up and down. Has been traversed by.

The plurality of levitation ribs 7 are wound in a coil shape as shown in FIG. 1, and a plurality of upper rollers 1 to be described later.
It has a function of forming an appropriate gap between 0 and the lower roller 1.

In addition, a pair of slide blocks 22, 22
As shown in the figure, A has guide shafts 21 on both sides thereof.
21A or guide shafts 21B and 21C are longitudinally penetrated, and the guide shafts 21 and 21 are provided on both sides of the upper surface.
The ring-shaped guide bushes 23 are vertically attached to the A or the guide shafts 21B and 21C, respectively.

Further, a pair of slide blocks 22.2
A pair of holder blocks 24 and 24A facing each other are horizontally attached to both sides of the lower surface of 2A, and an upper roller frame 8 is mounted between the protruding portions of the pair of holder blocks 24 and 24A. There is.

As shown in FIG. 2, the upper roller frame 8 is formed in a substantially rectangular shape in plan view, and cutouts 8b are cut out at the four corners of the upper roller frame 8. The plurality of cutouts 8b are holder blocks. Circular holder shafts 25 supported by 24 and 24A are axially mounted respectively.

However, as shown in FIG. 1, the upper roller frame 8 is located immediately above the lower roller frame 4 and moves up and down in accordance with the vertical movement of the pair of slide blocks 24 and 24A, and the pair of holder blocks 24.・ 24A
It can move in the front-back direction (the left-right direction in FIG. 1) between them.

On the lower surface of the upper roller frame 8 facing the lower roller frame 4, a pair of upper roller receivers 9 facing each other are screwed via a plurality of bolts.
A plurality of upper rollers 10 are rotatably mounted between the pair of upper roller receivers 9.

As shown in FIGS. 1 and 2, the plurality of upper rollers 10 are parallel to the lower roller frame 4 of the roll leveler in the left-right direction in the front-rear direction, as in the lower roller 1. In other words, a plurality of lower rollers 1 arranged in parallel in the entrance / exit direction) and facing each other in parallel through a gap form a staggered arrangement.

However, the plurality of upper rollers 10 and the plurality of lower rollers 1 rotate via a universal joint (not shown) under the drive of a driving device (not shown), and the winding habit of the strip-shaped metal material inserted from the front is folded back. It has a function of straightening and stripping the straightened strip-shaped metal material backward.

On the other hand, the plurality of guide shafts 21
1A ・ 21B ・ 21C slide block 22 ・ 22A
As shown in FIG. 1, a flat rectangular fixing plate 26 is horizontally fitted and fixed to the upper end protruding from the upper surface of the fixing plate 26. 27 are arranged respectively.

As shown in FIG. 1, the plurality of handles 27 are provided with adjusting screws (adjusting tools) 28 hanging down and attached to the centers of the lower portions thereof, and the plurality of adjusting screws 28 are rotatably fixed. Fixing plate 26 via lock nut 29
While being screwed into the screw holes before and after,
The lower ends of the plurality of adjusting screws 28 are the upper roller frame 8.
Are pressed against the front and rear portions of the upper surface of the.

However, as shown in FIG. 1, the plurality of adjusting screws 28 move up and down while rotating as the handle 27 is operated by the operator, and move the upper roller frame 8 directly below the pressure contact up and down. It has a function of adjusting the distance between the plurality of upper rollers 10 and the lower roller 1 or the degree of inclination on the inlet / outlet side.

The adjusted distance or the parallelism thereof is displayed by a plurality (two in this embodiment) of dial gauges not shown. The plurality of dial gauges are provided on the inlet side and the outlet side of the upper roller frame 8. One is provided on each of the side and the side.

Therefore, in order to correct the winding habit of the strip-shaped metal material wound into a roll before pressing, the end portion of the strip-shaped metal material is placed between the rotating upper roller 10 and lower roller 1 in the front portion. You can insert it from

Then, the inserted strip-shaped metal material is nipped while being in sliding contact with the rotating upper roller 10 and the lower roller 1, and is sequentially folded back into a corrugated state between the upper roller 10 and the lower roller 1. After the curl is corrected and the curl is discharged from the rear part, the curl is supplied to a press machine (not shown).

When adjusting the gap between the upper roller 10 and the lower roller 1, first, the front lock nut 29 is loosened and the front handle 27 is screwed while watching the dial gauge.

Then, the adjusting screw 2 descends while rotating.
8 presses down the front part of the upper roller frame 8 against which it is pressed, and the slide block 22 supporting the front part of the upper roller frame 8 moves down while compressing the plurality of levitation ribs 7.

When the front part of the upper roller frame 8 is lowered in this way, the lock nut 29 on the rear part is similarly loosened, and the handle 27 on the rear part is similarly screwed while watching the dial gauge. Is pressed down so that it becomes horizontal, it is possible to adjust the distance between the plurality of upper rollers 10 and the lower rollers 1 or the inclination thereof.

At the time of the above work, a gap between the front and rear of the upper roller 10 and the lower roller 1 may be different due to an inadequate operation, and the upper roller frame 8 tilts and moves in the front-rear direction. It is considered that there is a risk of impairing the parallel relationship with the roller 1 (the parallel relationship between the upper roller 10 and the lower roller 1 when viewed from above).

However, since the upper roller 10 and the lower roller 1 are arranged in a zigzag pattern, and the upper roller frame 8 freely moves in the front-rear direction, the upper roller frame 8 is not moved due to the correction resistance of the strip-shaped metal material. The upper roller 10 and the lower roller 1 are reliably maintained in a parallel relationship by naturally sliding in the same direction. That is, when the strip-shaped metal material is inserted, the upper roller frame 8 slides in the front-rear direction, and the parallel relationship between the upper roller 10 and the lower roller 1 is reliably maintained.

According to the above construction, the distance between the plurality of upper rollers 10 and the lower rollers 1 or the parallelism thereof can be adjusted by operating only two handles 27, which is necessary for the operation. By reducing the number of handles 27 and dial gauges, the work efficiency of precision adjustment work can be significantly improved.

Furthermore, since the adjustment is not performed using a worm gear or the like, it is possible to eliminate the problem of mechanical coupling factors such as gear backlash, and it is expected that precise adjustment can be facilitated.

[0061]

As described above, according to the present invention, it is possible to easily adjust the distance between the plurality of upper rollers and the lower roller or the inclination thereof by operating the two adjusting tools. There is a remarkable effect that the work efficiency of precise adjustment work can be remarkably improved by reducing the number of handles required for operation.

Further, even if the parallel relationship between the upper roller and the lower roller when viewed from above is not maintained,
Since the upper roller frame slides in the front-rear direction so as to maintain the parallel relationship between the upper roller and the lower roller, it is possible to prevent a significant decrease in work efficiency, which is a particular effect.

Further, since the adjustment is not performed using a worm gear or the like, it is possible to surely eliminate the problem of mechanical coupling factors such as gear backlash, and a remarkable effect of facilitating precise adjustment can be expected.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a roll leveler according to the present invention.

FIG. 2 is a plan view showing a state in which a fixing plate of the roll leveler according to the present invention is removed.

FIG. 3 is a cross-sectional side view showing a conventional roll leveler.

FIG. 4 is a front view showing a conventional roll leveler.

FIG. 5 is an explanatory view of a main part for explaining a second operation of adjusting a distance between an upper roller and a lower roller or a degree of inclination of the conventional roller.

[Explanation of symbols]

1 ... Lower roller, 4 ... Lower roller frame, 7 ... Levitation bar, 8 ... Upper roller frame, 10 ... Upper roller, 21
・ 21A ・ 21B ・ 21C ... Guide shaft (guide rod), 22 ・ 22A ... Slide block (block),
24 / 24A ... Holder block, 25 ... Holder shaft, 28 ... Adjustment screw (adjustment tool).

Claims (1)

[Claims] 1. A plurality of rotatable lower rollers arranged side by side in the front-rear direction on a lower roller frame, guide rods provided upright on the front and rear portions of the lower roller frame, and A vertically movable block which is vertically penetrated by the guide rods and elastically biased upward, and an upper roller frame which is mounted in a substantially horizontal state between holder blocks of the pair of blocks and which is movable in the front-rear direction. , A plurality of the upper roller frames are arranged side by side in the front-rear direction in the facing portion facing the lower roller frame,
A rotatable upper roller that alternately forms a zigzag arrangement with a plurality of lower rollers that are close to each other through a gap, and an adjusting tool that moves up and down based on an operation to vertically move the lower upper roller frame that is in pressure contact. A roll leveler, comprising: a belt-shaped material wound between an upper roller and a lower roller to correct the curl of the material.