JP5935774B2 - Chute liner for scrap chute, scrap chute and thick plate shear line including the same, thick plate shearing method and thick plate manufacturing method using the thick plate shear line - Google Patents

Description

  The present invention relates to a chute liner for a scrap chute for treating scrap generated by shearing by a double side shear in a thick plate shear line.

  In the plate rolling shear line, when finishing the side end face of the plate, double side shears are installed on both sides of the plate, and the plate is guided intermittently by the guide roll by the upper knife and the lower knife. Then, the work is sheared by repetitive operations, and the part that becomes the excess width from the product in the entire length of both ends of the thick plate is sheared and removed with a double side shear (sometimes referred to as an ear picking work).

  FIG. 3 shows an oblique top view for explaining the work of shearing / removing a portion of the thick plate 6 which becomes an excessive width from the product with a double side shear. The strip portion 7 at the end on the plate side that becomes the surplus width is sheared by a main knife (not shown) of a double side shear and then separated from the steel plate 6 at the position B by the upper knife 5a and the lower knife 5b of the scrap knife. Scrap.

  When the strip portion 7 having an excessive width is cut off, the chute liner 4 sandwiched between the guides 2a and 2b is paid out to a conveyor (not shown). When the strip portion 7 is cut off, the tip portion thereof is a chute liner. 4 (position A) and the chute liner 4 is damaged.

FIG. 4 is a diagram for explaining a configuration of a portion where the chute liner 4 is attached to the scrap chute main body 1. The chute liner 4 can be attached to and removed from the chute 3 of the scrap chute main body 1 with bolts 8 so that the chute liner 4 can be replaced. It is attached.

  When replacing the chute liner 4, after removing the bolts 8, the worker holds the tip of the chute liner 4 and replaces it. Therefore, the tip of the chute liner 4 is lifted from the chute 3 by the support member 16. In addition, without replacing the chute liner 4, the damaged portion is also subjected to build-up repair welding.

  In the work of exchanging the chute liner 4 and the work of overlaying and welding the damaged portion, it is necessary for the worker to approach the chute liner 4 from the upstream side in the conveying direction of the plate 6. However, hydraulic pipes and control signal lines are stretched around the scrap knife, and guides 2a and 2b for guiding to the conveyor are attached on both sides of the chute liner 4, so that the work is performed in a narrow space. In particular, the burden on the operator in the build-up repair welding is large.

Accordingly, an object of the present invention is to provide a chute liner that can be easily attached to and detached from the scrap chute main body.

The object of the present invention can be achieved by the following means.
1. In a thick plate shearing line, a strip liner that is cut as a product surplus width from the side edge of the plate with a side shear scrap knife is sent to the conveyor as scrap. The chute liner has a substantially rectangular shape covering the entire surface of the chute base, and a portion on the downstream side from a position where the strip portion cut off from the steel plate collides, and an end portion on the upstream side, the chute base and A scrap chute liner having a mechanism for adjusting the gap between the chute base and the chute base so as to be replaceable in the vicinity of the downstream end.
2. In a thick plate shearing line, a strip liner that is cut as a product surplus width from the side edge of the plate with a side shear scrap knife is sent to the conveyor as scrap. There,
The chute liner is configured to drop a strip portion of the chute base that is cut off from the plate side end portion onto the conveyance conveyor, and is substantially along a curved shape with a high downstream side in the steel plate conveyance direction and covers the chute base. A substantially rectangular shape having
The chute base has a protrusion on the downstream side in the steel plate conveyance direction from the portion where the strip portion collides,
The chute liner is fixed to a notch that fits into the protrusion provided on the chute base, and a portion that is downstream of the notch in the steel sheet conveyance direction, and is opposed to the protrusion. A member having a hole, and a bent portion having a hole that overlaps an L-shaped portion provided at an end portion on the upstream side in the steel plate conveyance direction of the chute base,
The chute liner is bolted to the chute base in the vicinity of an end portion of the chute base on the downstream side in the steel plate conveyance direction, the protrusion provided on the chute base, and the member provided on the chute liner; The distance between the L-shaped portion of the chute base and the chute liner and the bent portion is the hole of the bent portion. A scrap chute liner, wherein the chute liner is detachably attached to the chute base by adjusting with a nut or a bolt fitted into a bolt hole.

  According to the present invention, there is no build-up repair welding, the replacement of the chute liner is facilitated and the burden on the operator is reduced, and it is possible to increase the steel sheet feed amount for each surplus part cutting in the ear picking work, The efficiency of the double side shear is improved and it is extremely useful in industry.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the state which attached the chute liner which concerns on one Example of this invention to the chute | base. (A) is a top view, (b) is a side view. The figure which shows one Embodiment of the chute liner which concerns on the other Example of this invention. The diagonal upper side view explaining the operation | work which shears and removes the part which becomes a surplus width from a product with a thick plate with a double side shear. The figure explaining the structure of the part which attaches a chute liner to the main body of a scrap chute .

  In the thick plate shearing line, a strip portion (hereinafter referred to as “scrap”), which is cut as a product surplus width from a plate-side end portion by a side shear scrap knife, is discharged as scrap to a conveyor on a thick plate shear line. It is a chute liner that can be exchanged with the shoot liner.

1A and 1B are diagrams for explaining a chute liner according to the present invention attached to a chute base of a scrap chute , wherein FIG. 1A is a top view and FIG. 1B is a side view. In the figure, 1 is a scrap chute body, 8 is a bolt, 9 is a nut, 12a and 12b are chute liners, 13 is a chute base, 14a and 14b are projections (stopper blocks) of the chute base 13, and 15 is chute liners 14a and 14b. 17 is an L-shaped portion of the chute base 13, and 18 is a bent portion of the chute liners 12 a and 12 b that overlaps the L-shaped portion of the chute base 17. 3 and 4 are given the same reference numerals. FIG. 1 shows a state in which two chute liners 12a (12b) according to the present invention are mounted side by side in the width direction of the chute base 13. Each of the chute liners 12a and 12b is attached to the chute base 13 in the same manner.

  The chute base 13 of the scrap chute main body 1 has a curved shape in which the downstream side in the steel plate conveyance direction is high in order to drop the scrap onto the conveyance conveyor via the chute 3.

  Each of the illustrated chute liners 12a and 12b has a curved shape that substantially conforms to the above-described shape of the chute base 13, and also covers substantially the entire surface of the chute base 13, and each has a substantially rectangular shape. Each of the chute liners 12a and 12b is attached to the chute base 13 in the same manner. Hereinafter, the chute liner 12a will be described.

  The chute liner 12a is fitted to the projection 14a of the chute base 13 at a portion which is downstream in the steel plate conveyance direction (arrow a) from the position where the scrap strip portion collides (position A in FIG. 3). Has a rectangular cutout portion 19 that protrudes onto the chute liner 12a, and a bent portion 18 that covers the L-shaped portion 17 of the chute base 13 at the upstream end portion. The projecting portion 14a of the chute base 13 functions as a stopper block that prevents scrap from climbing on the steel plate 6 beyond the chute base 13 in the steel plate conveyance direction (indicated by an arrow a).

  The chute liner 12a has a member 15 that is fixed to the downstream side of the notch 19 in the direction of conveying the steel sheet. The member 15 has a bolt hole (not shown) in which a female thread is cut at a position facing the protrusion 14a. Has been. The bent portion 18 has a nut 9 fixed to the outside of a hole portion (not shown) processed at a position facing the L-shaped portion 17.

  The nut 15 may be fixed to the outside of the hole processed with the member 15 at a position facing the protruding portion 14a, and a bolt hole with a female thread cut at a position facing the L-shaped portion 17 at the bent portion 18 may be processed. There is no particular limitation.

  The chute liner 12a has a hole (not shown) through which a bolt 8 for fastening the bolt with the chute base 13 is machined at the end on the downstream side in the steel plate conveying direction (arrow a). In the vicinity of the L-shaped portion 17 of the chute base 13, a support member 16 that widens the gap with the chute 3 is attached so that the replacement work is easy.

  When attaching the chute liner 12a to the chute base 13, first, the L-shaped portion 18 of the chute base 13 is overlapped with the bent portion 17 of the chute liner 12a from the upstream side in the steel plate conveyance direction (operation 1). Here, the interval between the L-shaped portion 17 and the bent portion 18 of the chute base 13 can be adjusted by the rotation of the bolt 8 fitted to the nut 9 attached to the hole portion of the bent portion 18. Next, the protruding portion 14a of the chute base 13 is fitted into the cutout portion 19 of the chute liner 12a (operation 2). Here, the interval between the protrusion 14 a of the chute base 13 and the member 15 can be adjusted by the rotation of the bolt 8 that fits into the bolt hole in which the female thread of the member 15 is cut. Further, the bolt 8 is inserted into the hole of the chute liner 12a and fastened to the bolt hole processed in the vicinity of the end of the chute base 13 on the downstream side in the steel plate conveyance direction (operation 3).

  In the adjustment work of the work 2 and the work 3, the length of the projecting portion of the bolt 8 that abuts against the protruding portion 14a and the L-shaped portion 17 can be changed, so that the chute liner 12a follows the curved shape of the chute base 13. can do. It is preferable that there is no gap between the chute liner 12a and the chute base 13 because the interval at which the chute liner 12a is replaced can be extended. Of these attachment operations, operation 2 and operation 3 are performed on the downstream side of the main body 1 of the scrap chute in the steel plate conveyance direction. Since the work place in the vicinity of the downstream side of the scrap chute main body 1 in the steel plate conveyance direction has a larger work place than the upstream side, the burden on the work in the narrow place is reduced for the worker.

  In addition, since the two illustrated chute liners are arranged in the width direction of the chute base, the weight of one chute base is light and the burden on the operator is reduced. The width of the chute liner may be the same as the width of the chute base.

  When the width of the scrap chute main body 1 is narrowed, the shape of the chute liner 12a is arranged so that the guide 2b on the steel plate side can be brought closer to the chute liner 12a side among the guides 2a and 2b for guiding scrap to the conveyor. The guide 2b may have a notch (FIG. 2).

While feeding a thick plate with a thickness of 50.8 mm at a conveyance speed of 120 rpm, the scrap scraping operation according to the conventional scrap chute and the scrap chute according to the present invention was performed.
A conventional scrap chute uses a portion corresponding to the chute base of the present invention as a chute liner.

  According to the present invention, the chute liner replacement time was 2 hr, but conventionally it was 24 hr. Conventionally, when the build-up repair welding is performed on the chute base, the cycle is conventionally one month. However, according to the present invention, there is no build-up repair welding operation, and the chute liner replacement cycle is two months.

  Moreover, although the steel plate feed amount of the conventional apparatus was 1200 mm, according to the apparatus of this invention, it improved with 1300 mm.

1 Body
2a, 2b Guide 3 Shoot
4 Chute liner 5a Upper blade 5b Lower blade 6 Steel plate 7 Strip 8 Bolt 9 Nut
10 Transport roll 11 Spacer
12a, 12b Chute liner (example of the present invention)
13 Chute bases 14a and 14b Protruding part 15 Member 16 Supporting member 17 L-shaped part 18 Bending part 19 Notch part

Claims (6)

In a thick plate shearing line, a strip liner that is cut as a product surplus width from the side edge of the plate with a side shear scrap knife is sent to the conveyor as scrap. there are, the chute liner is a substantially rectangular shape to cover the chute base of the entire surface, a portion on the downstream side in the steel plate conveyance direction from the position where the strip portion has been cut off from the steel plate collides, upstream in the steel plate conveyance direction the end to be, has a mechanism for adjusting the distance between the chute base, scrap near the edge on the downstream side in the steel plate conveyance direction, characterized in that it replaceably mounted to the chute base Shoot liner for shooting. In a thick plate shearing line, a strip liner that is cut as a product surplus width from the side edge of the plate with a side shear scrap knife is sent to the conveyor as scrap. There,
The chute liner is configured to drop a strip portion of the chute base that is cut off from the plate side end portion onto the conveyance conveyor, and is substantially along a curved shape with a high downstream side in the steel plate conveyance direction and covers the chute base. A substantially rectangular shape having
The chute base has a protrusion on the downstream side in the steel plate conveyance direction from the portion where the strip portion collides,
The chute liner is fixed to a notch that fits into the protrusion provided on the chute base, and a portion that is downstream of the notch in the steel sheet conveyance direction, and is opposed to the protrusion. A member having a hole, and a bent portion having a hole that overlaps an L-shaped portion provided at an end portion on the upstream side in the steel plate conveyance direction of the chute base,
The chute liner is bolted to the chute base in the vicinity of an end portion of the chute base on the downstream side in the steel plate conveyance direction, the protrusion provided on the chute base, and the member provided on the chute liner; The distance between the L-shaped portion of the chute base and the chute liner and the bent portion is the hole of the bent portion. A scrap chute liner, wherein the chute liner is detachably attached to the chute base by adjusting with a nut or a bolt fitted into a bolt hole. A scrap chute comprising the chute liner for scrap chute according to claim 1 or 2. A thick plate shear line comprising the scrap chute according to claim 3 and a side shear. A thick plate shearing method using a thick plate shearing line according to claim 4, wherein a strip portion having a product surplus width is separated from a plate side end portion by a scrap knife of the side shear, and the strip portion is removed from the scrap. A method of shearing planks that is scraped off by a chute. It is a manufacturing method of the thick plate using the thick plate shear line of Claim 4, Comprising: The strip part used as a product surplus width is cut | disconnected from the board side edge part with the scrap knife of the said side shear, The said strip part is made into the said scrap A method of manufacturing planks that is paid out as scrap with a chute.

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