JP4857712B2 - Metal strip side trimmer equipment - Google Patents

Description

  The present invention relates to a metal strip side trimmer device, and more particularly to a metal strip side trimmer device suitable for side trimming of thin materials.

  In addition to steel strips, metal strips such as aluminum, copper, and alloys thereof are generally removed by a side trimmer device in the manufacturing process. As this side trimmer device, a combination of a pair of shearing round blades arranged on both sides in the metal band width direction, a lower blade is arranged outside the metal band width direction, and an upper blade is arranged inside the metal band width direction. There is something arranged. In the side trimmer device adopting such a combination method, trim debris is introduced into a pit below the pass line and can be processed by an appropriate processing method thereafter.

However, when the side trimming of a thin material is performed at a high speed with the conventional side trimmer device, as illustrated in FIGS. 4 and 5, trim scrap T (the scrap indicated by the broken line) is on the metal strip after trimming. The problem was that line troubles were likely to occur due to the jumping out of the trim and rolling up the trim.
The chute device including the upper chute 9 and the lower chute 10 shown in FIG. 4 has a role of introducing trim debris T below the pass line, but is located between the trim debris generation position and the upper chute 9. Is not covered. For this reason, the trim scraps T jump out of the trimmed metal strip, and the trim scraps roll up.

  In particular, a thin material having a thickness of 0.35 mm or less may include an unsteady part such as a part where the trim width on one side is extremely narrow or a part where there is an edge crack, and the above-described trim scrap winding occurs, It became a bottleneck when performing side trimming at high speed. FIG. 6 shows a case where the leading metal band S1 and the trailing metal band S2 are connected to each other at the welded portion in the metal band width direction, and the width of the ear A on the trailing metal band S2 side becomes extremely narrow. Illustrated. B indicates a trim setting width.

  On the other hand, as shown in FIG. 7, there is a shearing device that covers the upper part of the trim waste passage with the ear dust guide plate 5T (Patent Document 1). As shown in FIG. 8 (a), the steel strip side trimmer device described in Patent Document 1 has a lower blade 1 disposed outside the metal strip width direction and an upper blade 2 disposed inside the metal strip width direction. The trim waste guide plate 5T that covers the trim waste passage from the position where the trim waste is generated to the position below the pass line and from above is attached to the shear blade mounting base. The ear dust guide plate 5T has a bent portion on the steel strip exit side from the center point of the line connecting the centers 3 of the rotation axes of the pair of shearing round blades.

That is, the lower surface of the portion where the downward inclination angle θ is 25 to 35 ° and the length L ₂ is 30 to 50 mm from the position of the length L ₁ that is a predetermined multiple of the diameter of the shearing round blade is shown in FIG. ) As shown in FIG.
According to the shearing device provided with such an ear dust guide plate 5T, since there is no round blade below the trimmed steel strip, it is possible to prevent the occurrence of defective coils due to the cutter mark, but the ear dust guide plate 5T has a drawback. is there.
Japanese Utility Model Publication No. 61-159120

That is, the ear dust guide plate 5T provided in the steel strip shearing device described in Patent Document 1 has a trim between the lower surface and the pass line when viewed from the side on the exit side in the metal strip transport direction. A side space that reaches the surface of the subsequent metal strip may be formed.
For this reason, when trying to perform side trimming of a metal strip including an unsteady portion such as a portion where the trim width on one side becomes extremely narrow or a portion where there is an edge crack, trim trim T is removed from the side space after trimming. There is a risk of popping up and trim scraps rolling up.

  In view of the above prior art, the present invention can reliably prevent trim scraps from rolling up even when including a non-stationary part such as a part where the trim width on one side becomes extremely narrow or a part where there is an edge crack. An object of the present invention is to provide a metal strip side trimmer device capable of stably performing side trimming at high speed.

The present invention is as follows.
1. A side trimmer device that performs side trimming of both ears of a metal band, a pair of shears composed of a lower blade arranged outside the metal band width direction and an upper blade arranged inside the metal band width direction Place the round blade on both sides in the width direction of the metal band, and install the trim scrap guide plate that covers the upper part of the trim scrap passage between the trim scrap generation position and the trim scrap below the pass line. The trim scrap guide is mounted on the outlet side in the metal band conveying direction with a bolt through a long hole provided in the guide plate support part on the guide receiving part of the metal plate , and on the outlet side in the metal band conveying direction as viewed from the side. The trim scrap guide plate is positioned at the uppermost position of the outer periphery of the lower blade from the lower surface of the trim scrap guide plate so that there is no side space reaching the surface of the metal strip after trimming between the lower surface of the plate and the pass line. Up and down interval And within a 2 mm, the metal strip of the side trimmer apparatus, characterized in that the angle of inclination against the pass line was 4 to 8 °.
2 . The trim scrap guide plate has an entry side portion extending to the entry side in the metal band conveying direction. Metal band of the side trimmer apparatus according to.

  According to the present invention, the trim scrap guide plate itself covering the upper side of the trim scrap passage on the exit side in the metal strip conveying direction, and the lower surface of the trim scrap guide plate on the exit side in the metal strip transport direction as viewed from the side. Since no gap is formed between the metal line and the pass line, that is, the side space reaching the surface of the metal strip after trimming is prevented, trim debris does not fly out during side trimming.

  Therefore, even when unsteady parts such as one where the trim width on one side becomes extremely narrow or where there is an edge crack are included, side trimming of thin materials can be performed quickly and stably while reliably preventing trim scraps from rolling up. Can be done.

The case where the present invention is applied to a steel strip side trimmer device will be described with reference to the drawings.
FIG. 1 is a schematic side view showing a mounting state of a trim scrap guide plate on one side in the metal band width direction. FIG. 2 is a view showing an attachment state of the trim scrap guide plate on the other side in the metal band width direction when viewed from the entry side in the metal band conveyance direction with respect to the apparatus, and shows a rotation shaft of a pair of shearing round blades. 3 is a longitudinal sectional view passing through a center 3. FIG.

In FIG. 1, the steel strip S is sheared by a pair of shearing round blades as shown in FIG. 2 while the steel strip is transported in the metal strip transport direction indicated by the arrow 8. As shown in FIG. 2, this pair of shearing round blades has a configuration in which the lower blade 1 is arranged outside the metal band width direction and the upper blade 2 is arranged inside the metal band width direction, Has been placed.
Here, the trim scrap guide plate 5 is disposed so as to cover the upper portion of the trim scrap passage from the trim scrap generation position until the trim scrap T is positioned below the pass line.

  However, in FIG. 1, when the trim debris guide plate 5 is divided into the exit side portion 5A and the entrance side portion 5B with the straight line connecting the centers 3 of the rotation shafts of the pair of shearing round blades, the exit side portion 5A is trimmed. It is a part covering the upper part of the trim waste passage after the waste generation position, and it is essential to use a guide plate having the exit side 5A. On the other hand, the entry side portion 5B is a portion that covers the upper space from which the sheared ear portion is pushed up by the lower blade 1 disposed outside the metal band width direction and trim debris is generated. The guide plate having the entry side portion 5B is preferable because it can be applied to a wide range of thin materials. One end (left end in FIG. 1) of the entry side portion 5B is located above the pass line and has a vertical interval indicated by g up to the uppermost position on the outer periphery of the lower blade 1. The other end (the right end in FIG. 1) of the exit side 5A that is the opposite side is at a position below the pass line.

φ is an inclination angle of the trim scrap guide plate 5 with respect to the pass line, and is adjusted in advance at the connection portion between the guide plate support portion 6 and the trim scrap guide plate 5 so that the guide plate support portion 6 is brought into close contact with the guide receiving portion 7. It is decided by. The trim scrap guide plate 5 is a rectangular flat plate having a uniform thickness t.
In the present invention, the inclination angle φ, the thickness t, and the length of the exit side 5A of the trim scrap guide plate 5 with respect to the pass line are appropriately set. As a result, the trim scrap guide plate 5 is arranged on the exit side in the metal strip transport direction, and, when viewed from the side, on the exit side in the metal strip transport direction, between the lower surface of the trim scrap guide plate 5 and the pass line. The metal strip side trimmer device is attached to the shear blade mounting base in a state where the trim scrap guide plate 5 is inclined with respect to the pass line so that a side space reaching the surface of the metal strip S after trimming is not possible.

According to the side trimmer apparatus described above, the trim scrap guide plate covers the upper side of the trim scrap passage on the exit side in the metal strip transport direction, and at the same time, the trim strip guide plate itself allows The side space leading to the surface is not made so trim trim will not pop out during side trimming.
For this reason, even when unsteady parts such as places where the trim width on one side becomes extremely narrow or where there are edge cracks are included, side trimming of thin materials is fast and stable while reliably preventing trim scraps from rolling up. Can be done.

In this case, as shown in FIG. 1, the trim scrap guide plate 5 is attached to the guide receiving portion 7 of the shear blade mounting base with bolts via the guide plate support portion 6. 6A shows a long hole for bolt mounting. The trim scrap guide plate 5 for guiding the trim scraps of the steel strip S below the pass line can be made of, for example, a stainless steel plate having excellent wear resistance.
The vertical distance g from the lower surface of the trim scrap guide plate 5 to the uppermost position of the outer periphery of the lower blade 1 is preferably within 2 mm. The reason for this is that when the vertical gap g from the lower surface of the trim scrap guide plate 5 to the uppermost position of the outer periphery of the lower blade is excessive, especially for thin materials with a plate thickness in the range of 0.18 to 0.34 mm, This is because the trim scrap T is twisted and easily enters the gap between the upper blade 2 and the trim scrap guide plate 5. In order to adjust the vertical interval g, for example, the vertical interval of the long holes 6A is made larger than the bolt diameter, and when the trim scrap guide plate 5 is attached to the guide receiving portion 7 of the shear blade mounting base, the vertical interval g is within 2 mm. However, if the vertical gap g is excessively narrow, trim scraps with a plate thickness of 0.18 to 0.34 mm will not enter this gap, so an appropriate gap is set.

  Moreover, it is preferable that the inclination | tilt angle (phi) with respect to the pass line of the trim waste guide plate 5 shall be 4-8 degrees. The reason for this is that when the inclination angle φ of the trim scrap guide plate 5 with respect to the pass line is less than 4 °, the side space reaching the surface of the metal strip after trimming increases, and trim scraps may jump out. . On the other hand, when the inclination angle φ of the trim scrap guide plate 5 with respect to the pass line exceeds 8 °, the inclination angle φ with respect to the pass line increases, and if the vertical gap g is set within 2 mm, the trim scrap guide plate This is because there is interference between the rubber ring 4 as the upper backup roll 5 and interference between the trim scrap guide plate 5 and the outer periphery of the lower blade 1.

  Further, when the trim scrap guide plate 5 is mounted on the guide receiving portion 7 of the shear blade mounting base, the distance between the side surface of the trim scrap guide plate 5 and the side surface of the upper blade 2 shown in FIG. 2 is adjusted to about 1 mm. This is not only desirable to prevent contact between the cutting tool and the guide plate, but if this distance is excessively widened, the trim scrap tip will be removed when trim trim breaks during side trimming of unsteady parts. There is a risk of getting in.

The present invention was applied to a side trimmer device that performs side trimming of a steel strip having a plate thickness of 0.18 to 0.34 mm and a plate width of 600 mm to 1200 mm. In the side trimmer device before application of the present invention, an upper chute 9 and a lower chute 10 were provided on the exit side in the metal band conveying direction 8 as shown in FIG. Instead of the upper chute 9, the following trim scrap guide plate 5 was mounted on a shear blade mounting base (see FIG. 3).
(For a trimming material in which a steel strip having a plate thickness of 0.18 to 0.24 mm is connected at the weld)
Inclination angle φ = 8 ° with respect to pass line of trim scrap guide plate 5
Vertical distance from the lower surface of the trim scrap guide plate to the uppermost position of the outer periphery of the lower blade g = 2 mm
Total length of trim waste guide plate 5 = 150 mm (exit side 5A only)
Trim waste guide plate 5 thickness t = 3 mm
(For a trimming material in which a steel strip having a plate thickness of 0.18 to 0.34 mm is connected at the weld)
Inclination angle φ = 4 ° with respect to pass line of trim scrap guide plate 5
Vertical distance from the lower surface of the trim scrap guide plate to the uppermost position of the outer periphery of the lower blade g = 2 mm Total length of the trim scrap guide plate 5 = 180 mm (exit side portion 5A length = 145 mm, entry side portion 5B length = 35 mm)
Trim waste guide plate 5 thickness t = 1.5 mm
Prior to the application of the present invention, line troubles occurred due to trim scrap hoisting at a frequency of once / month. However, after application of the present invention, line troubles due to trim scrap hoisting have never occurred. In addition, the diameter of a shearing round blade is 100 mm, and the conveyance speed of the steel strip at the time of side trimming is a maximum of 250 mpm.

It is a schematic side view which shows the attachment state of the trim waste guide plate of the metal band width direction one side. It is a schematic sectional drawing which shows the attachment state of the trim scrap guide plate of the metal band width direction other side at the time of seeing with respect to an apparatus from the entrance side of a metal band conveyance direction. It is a schematic side view which shows the side trimmer apparatus which comprised the trim waste guide plate and lower chute which concern on this invention. It is a schematic side view which shows the side trimmer apparatus before application of this invention. It is a schematic perspective view explaining the problem in the side trimmer device before application of the present invention. It is a top view which shows the shift | offset | difference state of the welding part which trim scrap scraping tends to generate | occur | produce. It is a schematic side view which shows the shape of the conventional trim waste guide plate. It is II sectional drawing of FIG. 7, and II-II sectional drawing.

Explanation of symbols

S Metal strip (steel strip)
S1 Lead metal strip S2 Trail metal strip A Ear B B Trim setting width T Trim waste (also called ear dust)
1 Lower blade (shear round blade)
2 Upper blade (shear round blade)
DESCRIPTION OF SYMBOLS 3 Center of rotating shaft 4 Rubber ring 5 Trim waste guide plate 5A Outlet side part 5B Inlet side part 5T Ear waste guide plate 6 Guide plate support part 6A Long hole 7 Guide receiving part of a shear blade mounting base 8 Metal belt conveyance direction 9 Upper chute 10 Lower chute 11 Shear blade mounting base g Vertical distance from the lower surface of the trim scrap guide plate to the uppermost position of the outer periphery of the lower blade θ, φ Inclination angle

Claims (2)

A side trimmer device that performs side trimming of both ears of a metal band, a pair of shears composed of a lower blade arranged outside the metal band width direction and an upper blade arranged inside the metal band width direction The trim blade guide plate that covers the upper part of the trim scrap passage between the trim scrap generation position and the trim scrap below the pass line is arranged on the both sides in the metal band width direction with the round blade. At the guide receiving portion of the guide plate support portion is attached to the outlet side of the metal band conveying direction with a bolt through a long hole provided in the guide plate support portion ,
In addition, when viewed from the side, the trim scrap guide plate prevents a side space from reaching the surface of the trimmed metal strip between the lower surface of the trim scrap guide plate and the pass line on the exit side in the metal strip conveyance direction. a vertical distance from the bottom surface of the trim scrap guide plate to the uppermost position of the outer periphery of the lower knife is within a 2 mm, metal strip, characterized in that the angle of inclination against the pass line was 4 to 8 ° Side trimmer device. 2. The metal strip side trimmer device according to claim 1 , wherein the trim scrap guide plate has an entry side portion extending to the entry side in the metal strip conveyance direction.

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