JPS594246B2 - Clamp roller device for metal plates - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a shear line comprising a slitter that is adjustable in movement transversely to the transport direction of the metal plate, particularly the metal plate, having a front end and a rear end, the shearing line of the slitter being adjustable at least The present invention relates to a clamp roller device for a metal plate, in which at least two pairs of clamp rollers grip the metal plate more firmly without displacing the metal plate in the lateral direction of a shearing line during a process.

Clamp roller devices of the above type are already known;
In these, the metal sheets, in particular the metal slabs, which are transferred to the shear line, are first cut on both sides by means of a side edge grater to have a constant width.

Next, the metal plate is divided into two strips with equal or different widths by a slitter.1 Therefore, the position of the slitter can be adjusted in the shear line in the transverse direction with respect to the metal plate transport direction. and is fixed on the floor for each lateral adjustment.

The slitter is equipped with driving means having two driving roller pairs on the inlet side and the outlet side of the metal plate, respectively.

One pair of rollers of each drive means is fixed, and the other pair of rollers can be adjusted in position in the transverse direction with respect to the metal plate transport direction in accordance with various widths of the metal plate.

The distance between the inlet drive means and the outlet drive means is approximately 6 meters, and the inlet drive means feeds the front end of the metal plate to a slitter, which vertically splits the metal plate.

As soon as the front end of the metal plate reaches the exit side drive means, the drive means starts operating, and the metal plate is simultaneously conveyed by both drive means and passed through a slitter to undergo vertical shearing.

Many metal plates are sequentially fed into the slitter and subjected to vertical shearing one after another.

When the rear end of the metal plate reaches the inlet drive means, the drive means is stopped and the subsequent feeding of the metal plate is carried out only by the outlet drive means.

The disadvantage of this mode of operation of the slitter is that the front and rear edges of the sheared edge of the sheared metal sheet are displaced beyond the set dimension, while only the area between these ends has an almost exact width dimension. That's true.

After studying this result, it was found that an error with respect to the above set dimensions occurs when the metal plate is guided by only one of the two driving means.

In other words, when the metal plate is guided only on the front and rear sides of the Nuritsuta operating area, the pressure of the upper blade acting in the direction of the sheared strip of the metal plate causes the metal plate to move toward the upper blade, that is, against the upper blade. This is because the blade is pushed to the opposite side of the lower blade, causing shear that deviates from the set dimension.

In order to eliminate this error, it has been considered that the slitter is equipped with a guide arm having a vertical guide roller that regulates the moving direction of the metal plate.

This guide arm is provided in particular in the operating area of the slitter.

They are also provided before and after the area.

However, when the metal sheet is fed through the two-side edge grater pre-installed in the slitter, due to the presence of widthwise errors of the metal sheet and the elasticity of the metal sheet, the sheared edge of the sheared strip is This results in a loss of linearity,
The arrangement of guide arms also did not result in any useful improvement.

On the other hand, it has been proposed that a pair of clamp rollers is disposed 3 to 4 meters downstream of the exit drive means, that is, on the downstream side in the direction of movement of the metal plate. Good results were obtained and the processing condition of the front end of the metal plate was improved by providing a similar pair of clamp rollers on the front side of the inlet drive means, that is, on the upstream side in the moving direction of the metal plate.

Although this arrangement of ramp rollers is effective, it is still difficult to obtain the same width dimension over the entire length of the metal plate.

This deviation of the shear from a straight line with respect to the metal plate is not a problem in many cases for wide thick plates, but for narrow thin plates it is necessary to This results in elastic deformation and being pressed against the upper blade of the slitter.

In this case, even if the number of clamp roller pairs is doubled, a deviation in shearing occurs, and it is difficult to improve the situation.

The purpose of this invention is to improve the above-mentioned conventional drawbacks, to accurately and reliably guide a metal plate, especially regardless of the dimensions and elasticity of the metal plate, and to provide accurate dimensions for the front and rear ends of the metal plate. An object of the present invention is to provide a clamp roller device for a metal plate used in a shear line that can be applied.

According to the present invention, this object is achieved by disposing the pair of clamp rollers directly adjacent to the side of the blade area of the slitter, and strongly clamping the metal plate during the drilling operation by the blades, regardless of the operating position of both blades. This is achieved by holding the

In this case, the force acting transversely to the metal sheet transport direction during longitudinal shearing is transmitted to the clamp roller as pure tensile stress of the metal sheet, and as a result, the sheared edge is The extent to which the linearity is degraded is extremely small.

When a pair of clamp rollers is provided on the side of the blade area in this way, all the horizontal force generated by shearing must be absorbed by the clamp rollers, so two or more pairs are installed in series in the direction of plate transport. It is particularly advantageous to provide a pair of clamping rollers.

This is because it is practically impossible to sufficiently increase the contact pressure between one set of rollers and the metal plate so as to prevent the above-mentioned lateral movement of the metal plate.

In this invention, like the driving means described above, the pair of clamp rollers can be directly attached to the floor of the building where this device is installed.

In this case, the horizontal force acting on the plank from the shear force is transmitted to the floor via the pair of clamping rollers, while the reaction force is transmitted to the floor via the slitter stand, the slitter drive mechanism and the braking mechanism.

Therefore, even if the braking mechanism is not fully functional, the blade will still move horizontally.

However, in this invention, the clamp roller pair is attached to a slitter stand in order to prevent the above-mentioned movement of the blade.

In this case, the acting force and the reaction force are all absorbed by the slitter stand itself and do not reach the floor, so the above-mentioned problem of blade movement does not occur.

In a preferred embodiment of the invention, the pair of clamp rollers is disposed adjacent to the side of the lower blade holder.

According to this invention, each clamp roller of the clamp roller pair is attached to a support spar, one end of the support spar is rotatably attached to a slitter stand, and the other end is similarly supported on the slitter stand so as to be freely movable up and down. .

In this case, it is particularly advantageous if the end of the supporting girder on the downstream side of the movement of the metal plate, that is, on the outlet side, is swingable.

In the case of a clamp roller device in which two pairs of clamp rollers are provided at the front and rear in the metal plate transport direction, the upper rollers of both pairs of clamp rollers are attached to one clamp roller mounting plate,
It is preferable that the lower rollers of both clamp rollers are respectively attached to the other clamp roller attachment plate, and that the one and the other clamp roller attachment plates are respectively attached swingably to the upper and lower support girders.

It is particularly advantageous if the clamp rollers of the clamp roller pair are floatingly mounted on said clamp roller mounting plate and said mounting plate is located close to the shear line of the slitter.

Furthermore, it is also a good method to construct the upper and lower support girders so that they can be raised and lowered by separate actuating means (for example, hydraulic cylinders), and to operate both actuating means in common.

Next, an example in which a thick metal plate (hereinafter simply referred to as a thick plate) is sheared will be described.

In FIG. 1, the thick plate sent from the wide plate roller row is transferred to the side edge grater 2 by the feed roller table 1.
and a shear line equipped with a slitter 3.

The planks are sequentially sent one by one to the side edge grater 2 by a drive means 4.

The both side edge grater 2 shears both sides of the thick plate, forms it into a predetermined width, and sends it out.

The plank delivered from the side edge grater 2 is gripped by a drive means 5 consisting of a pair of fixed drive rollers 51 and a pair of movable drive rollers 52 whose position is adjustable in the transverse direction with respect to this pair of rollers.

The drive means 5 sequentially pass the planks through the slitter 3, which divides them into two strips with side edges substantially parallel to each other.

In this case, the dimensions or widths of both strips can be determined by moving the slitter 3 transversely to the direction of plank feed and fixing it to the floor of the building at the desired position.

In order to ensure that the thick plate is vertically sheared accurately over its entire length, two pairs of clamp rollers 6 are installed in close proximity to the double blades 15 of the slitter 30 (consisting of an upper blade 151 and a lower blade 152).
], 62 are provided.

The thick plate is divided by the upper blade 15 of the slitter 3 during division by the slitter.
1 and the lower blade 152 are held by the pair of clamp rollers 51 and 62 with strong force, and the shear line of the thick plate is prevented from moving in the lateral direction.

Behind the slitter 3 are two pairs of driving rollers 71 and 72.
Further drive means 7 are provided.

Of these roller pairs, roller pair 71 is fixed, while roller pair 72 is adjustable in position in the transverse direction with respect to the transport direction of the plank.

The thick plate divided by the slitter 3 is transferred to the feed roller table 18 by the drive means 7, and further transported to the next processing site.

In the slitter 3 shown in FIGS. 2 and 3, the pair of clamp rollers 51 and 52 are mounted on the slitter stand 8 instead of standing on the floor.

As a result, when shearing a thick plate, the clamp roller pair 5
1.62 is transmitted to the slitter stand 8 without being transmitted to the floor.

Due to the rigid design of the slitter stand 8, the above-mentioned reaction forces are absorbed by the slitter stand 8, which has high rigidity, and deflections of the slitter 30 relative to the bed are avoided.

The reason why we chose to mount the clamp roller pairs 61 and 62 on the slitter stand 8 instead of on the floor where the slitter 3 is installed is because the clamp roller pair 61 and 62 is mounted on the slitter stand 8 instead of on the floor where the slitter 3 is installed. The reaction force is transmitted to the floor via the slitter stand, slitter drive means, and braking mechanism, and if the braking mechanism does not operate sufficiently, the slitter will be displaced horizontally, causing errors in the vertical splitting of the plate. It is.

In FIG. 2, support blocks 91 and 92 are provided on the exit side of the slitter stand 8.

One ends of support beams 111 and 112 are rotatably locked to these support blocks around shafts 101 and 102.

The other end of the support spar 111.112 is connected to a hydraulic cylinder 121.
It is attached to the entrance side of the slitter stand 8 via 122 so that it can be raised and lowered.

That is, the support beams 111 and 112 support both cylinders 121
．． 122V - They can rotate toward and away from each other depending on the applied hydraulic pressure.

Clamp roller mounting plates 131 and 132 are rotatably supported by the upper support spar 11' and the lower support spar 112, respectively.

These clamp pro. - Both rollers of each pair of clamp rollers 51, 62 are supported at the free end of the mounting plate so that they can face each other and move toward and away from each other.

If the rollers of the clamping roller pair 61, 62 act on the plank located between them, the plank will be firmly held against sideways displacement during shearing and therefore with sufficient accuracy in all parts of the plank. A split shear is obtained.

As shown in FIG. 3, the clamp rollers of both clamp roller pairs 61 and 62 are positioned as close as possible to the shear line on the lower blade 152 side of the slitter 3, relative to the clamp roller mounting plates 131 and 132. It is supported in a floating manner.

In particular, the slitter 3 shown in FIGS. 2 and 3 has the advantage of being able to perform extremely accurate vertical splitting when shearing a thick plate over its entire length, that is, from the front end to the back end of the thick plate. .

This is because the clamp roller pair 51, 62 is fixed directly to the slitter stand 8 and therefore always acts on the slab at a constant distance from the shear line.

FIG. 4 shows a detailed side view of an embodiment of the clamp roller device for metal plates according to the invention, which has already been described in FIGS. 1-3.

FIG. 4 clearly discloses the arrangement of the various parts of the apparatus of the present invention.

[Brief Description of the Drawings] Fig. 1 is a schematic plan view showing a shear line equipped with a clamp roller device according to the present invention, and Fig. 2 is an enlarged view showing the slitter of Fig. 1 and the clamp roller device according to the present invention. 3 is a sectional view of FIG. 2, and FIG. 4 is a side view showing in detail the entire apparatus of the present invention shown in FIGS. 1 to 3. DESCRIPTION OF SYMBOLS 1... Feed roller table, 2... Both side edge grater, 3... Slitter, 4... Drive means, 51...
Fixed drive roller pair, 52...Movable drive roller pair, 61
, 62... Clamp roller pair, 7... Drive means, 8
...Slitter stand, 91.92...Support block, 101°102...Shaft, 111.112...Support girder, 121. 122...Hydraulic cylinder, 131.132...Clamp roller mounting plate, 18...Feed roller table, 15
...double blade, 15'...upper blade, 152...lower blade.

Claims (1)

[Claims] 1. A slitter that is provided with an upper blade and a lower blade of a shear new moon and that is movable substantially perpendicular to the shearing direction of a metal plate, particularly a metal thick plate, having a front end and a rear end, and along the shear line of the slitter. at least two clamp rollers arranged and mounted on a plurality of slitter stands supporting the slitter and acting from below on the metal plate during at least each shearing stroke of the operation of the slitter; Opposed to each of the rollers, the metal plate is actuated from above to firmly clamp the metal plate between the clamp roller and the metal plate is moved substantially perpendicular to the shear line during the shearing stroke. In a metal plate clamp roller device having at least two pairs of clamp rollers each comprising a clamp roller that grips the slitter so as to prevent the slitter from falling; means for supporting at least two pairs of clamp rollers at positions close to the portion of the metal plate to be sheared by the slitter; A clamp roller for a metal plate, characterized in that it has a means for strongly gripping the metal plate during the shearing stroke by the upper and lower blades of the slitter, regardless of the operating positions of the upper and lower blades. Device.