JPH063522U - Up-cut shear equipment - Google Patents

Abstract

(57) [Summary] [Purpose] In an up-cut shear facility, to prevent the tip of the material to be cut from hitting the lower blade and causing buckling. [Structure] A support roll 22 is disposed between the shearing pinch roll 20 and the upcut shear 18 in the upcut shearing equipment 10 at an intermediate height position between the pass line 12A and the upper blade 16, and Steel strip 1
2 Length to cutting tip and support blade 22 to lower blade 16
By making the distances to be equal to each other, it is possible to prevent the cutting tip from hitting the lower blade 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an up-cut shear facility provided on a processing line for a strip-shaped material such as a steel strip and for cutting the strip-shaped material.

[0002]

[Prior art]

 For example, end shears installed on a coil processing line for steel strips are often up-cut type shear equipment as shown in Figs. 2 and 3 because the equipment cost is low.

In this up-cut shearing equipment, the feed pinch roll 2 is low with respect to the pass line 1A of the steel strip 1, and the upper blade 3 of the up-cut shear is fixed higher than the pass line 1A. The pass level of the pinch roll 2 and the cutting position level of the shear are widened in the vertical direction to prevent the steel strip 1 from being scratched. Here, the lower blade 4 in the up-cut shear is set lower than the pass line 1A, and the lower blade 4 is raised to the position of the upper blade 3 when cutting the steel strip.

[0004]

[Problems to be solved by the device]

 Therefore, when the steel strip 1 is cut by the up-cut shearing equipment of FIG. 2, as shown in FIG. 3, the steel strip 1 is lifted upward on the tip side from the position of the pinch roll 2 and cut. Will be done.

At this time, for example, if the distance from the feed pinch roll 2 to the position of the lower blade 4 is L = 1100 mm and the height from the pass line to the upper blade 3 is 55 mm as shown in FIG. The distance L '(strip cutting length) from the feed pinch roll 2 of the steel strip 5 to be cut to the cutting point is longer by ΔL = L'-L = 1.4 mm.

Therefore, when the lower blade 4 rises to the position of the upper blade 3, cuts and then descends, the tip of the cut steel strip 1 also descends at the same time, from the feed pinch roll 2 to a length range of L = 1100 mm. The steel strip 1 having a cutting length L '= 1101.4 mm enters into the groove. When the guide plate 7 is contacted from above, the tip of the cut steel strip 1 is shown in the lower blade 4 as shown in FIG. There is a problem that the buckling phenomenon occurs here. When a bump is generated as described above, it becomes impossible to continuously cut the steel strip 1, which hinders automation.

The present invention has been made in view of the above-mentioned conventional problems, and prevents the tip of the material to be cut from catching on the lower blade and causing a buckling phenomenon when the lower blade descends. The purpose is to provide upcut shear equipment.

[0008]

[Means for Solving the Problems]

 This invention has an up-cut shear having an upper blade fixedly arranged above the pass line of the material to be cut and a lower blade arranged below the path line, and a pinch roll before the shear. In the up-cut shearing equipment, the support rolls are placed at an intermediate position between the pinch roll and the up-cut shear and at an intermediate height position between the cut position of the up-cut shear and the pass line. It achieves the above object.

A front guide is arranged between the pinch roll and the support roll so that one end is near the exit side of the pinch roll and the other end is near the upper end entry side of the support roll, and the support roll is also provided. Between the lower blade and the lower blade, one end may be arranged near the exit side of the support roll and the other end may be arranged near the upper end of the lower blade, and the rear guide may be arranged directly below the pass line. .

[0010]

[Action and effect]

 In this invention, the supporting roll is arranged between the pinch roll and the up-cut shear at the mid-height position between the cutting position of the up-cut shear and the pass line. With the fulcrum as the fulcrum, it swings up and down at the same distance, the cutting length and the length between the supporting roll and the lower blade become equal, and the tip of the cutting material does not hit the lower blade and buckling phenomenon does not occur.

According to the second aspect, the front guide and the rear guide are provided between the support roll and the pinch roll and between the support roll and the upper end of the lower blade, so that the lower blade of the tip of the material to be cut after cutting is cut. It is possible to more reliably prevent a catch.

[0012]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the up-cut shear equipment 10 according to this embodiment includes an upper blade 14 fixedly arranged above a pass line 12A of a steel strip 12 as a material to be cut, and the pass line. 12A, an up-cut shear 18 provided with a lower blade 16 positioned below 12A, a pinch roll 20 before the shear, an intermediate position between the pinch roll 20 before the shear and the up-cut shear 18, and the up-cut shear It is provided with a cutting position 18 (lower end of the upper blade 14) and a support roll 22 provided at an intermediate height position with respect to the pass line 12A.

Between the front shear pinch roll 20 and the support roll 22, one end (the left end in the figure) is near the exit side of the front shear pinch roll 20, and the other end (the right end in the figure) is the support roll 22. The front guide 24 is arranged so as to be near the upper end entering side.

Between the support roll 22 and the upcut shear 18, one end is near the exit side of the support roll 22 and the other end is near the upper end of the lower blade 16, directly below the pass line 12A. A rear guide 26 is provided so that

Next, a process of cutting the steel strip 12 by the up-cut shear equipment 10 according to the above-mentioned embodiment will be described.

When cutting the steel strip 12, the steel strip 12 traveling on the pass line 12 A is first restrained by the pinch roll 20 before the shear and then fed out by a predetermined length, and then the lower blade 16 is cut by the upper blade. 14 and the steel strip 12 is cut at the tip position (cutting position) of the lower blade 16.

At this time, since the support roll 22 is located at a height position between the pass line 12A and the tip of the upper blade 14, the support roll 22 is slightly bent downward with the support roll 22 as a fulcrum before the lower blade 16 is raised. It is in a state (two-dot chain line in FIG. 1).

When the lower blade 16 is raised in this state and the steel strip 12 is cut at the tip position of the upper blade 14, the length of the steel strip 12 from the supporting roll 12 to the cutting position at this time, that is, the cutting length is This is equal to the length from the supporting roll 22 shown by the two-dot chain line in FIG. 1 to the vicinity of the upper end of the lower blade 16.

Therefore, even if the lower blade 16 is lowered to the position indicated by the solid line in FIG. 1 after cutting, the tip end of the cut steel strip 12 merely swings about the supporting roll 22 at the same length. Therefore, the lower blade 16 does not get caught.

Furthermore, since the front guide 24 and the rear guide 26 in front of and behind the support roll 22 are in the form of a single plate with no gaps, the steel strip 12 can be smoothly guided, and especially the rear guide 26 is Since the steel strip 12 is supported in a state of being slightly bent downward of the steel strip 12 when the lower blade 16 descends to the original position after cutting (state of two-dot chain line in FIG. 1), Further, it is possible to reliably prevent the lower blade 16 of the tip of the steel strip 12 from being caught.

In the above embodiment, the support roll 22 is arranged at an intermediate position between the shear front pinch roll 20 and the up-cut shear 18, but this is not limited to the embodiment, and the support roll 22 may be used. When the steel strip 12 bends at the time of cutting, it may be located at a position where the bending amount is slight. If the distance between the pinch roll 22 before the shear and the upcut shear 18 is large, the upcut shear 18 will be used. When the distance is small, on the contrary, when the distance is small, it is preferable to provide it at a position close to the pinch roll 20 in front of the shear.

Further, in the above-mentioned embodiment, one plate-shaped front guide 24 and the rear guide 26 are provided on the front side and the rear side of the support roll 22, but the present invention is not limited to this. Instead, it may be a guide having another structure.

Further, although the above embodiment relates to an up-cut shearing equipment for cutting a steel strip, the present invention is naturally applied to a cutting equipment for strip-shaped materials other than the steel strip. .

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of an up-cut shear facility according to the present invention.

FIG. 2 is a schematic side view showing a steel strip passing state in a conventional up-cut shear facility.

FIG. 3 is a schematic side view showing when a steel strip is cut in a conventional up-cut shear facility.

FIG. 4 is a diagram showing a comparison of the lengths of the steel strip before and after the cutting when the steel strip is cut by the conventional up-cut shear equipment.

FIG. 5 is a schematic side view showing a state in which a steel strip tip cut by a conventional up-cut shearing equipment hits a lower blade.

[Explanation of symbols]

 10 ... Up-cut shear equipment 12 ... Steel strip 12A ... Pass line 14 ... Upper blade 16 ... Lower blade 18 ... Up-cut shear 20 ... Shear front pinch roll 22 ... Support roll 24 ... Front guide 26 ... Rear guide

Claims (2)

[Scope of utility model registration request] 1. An up-cut shear having an upper blade fixedly arranged above a pass line of a material to be cut and a lower blade arranged below the pass line, and a pinch roll before shearing. In the up-cut shearing equipment, which is characterized in that a supporting roll is arranged at an intermediate position between the pinch roll and the up-cutting shear, and at an intermediate height position between the cutting position of the up-cutting shear and the pass line. Up-cut shear equipment. 2. A front guide arranged between the pinch roll and the support roll so that one end is near the exit side of the pinch roll and the other end is near the upper end entry side of the support roll. And one end near the exit side of the support roll,
An up-cut shear that is provided with a rear guide disposed between the supporting roll and the lower blade so that the other end is in the vicinity of the upper end of the lower blade and immediately below the pass line. Facility.