JP2023112859A - Production method of accessory - Google Patents

Abstract

To provide an accessory allowing suppression of surface waviness at an end part in a width direction.SOLUTION: A production method of a deck accessory 1 for producing the deck accessory 1 for a deck plate 100, in which the deck plate has formed therein surface parts 120 with a plurality of concave groove parts 130 and ribs 110 extending in a length direction L and separated by a specific space in a width direction sequentially and alternately. The production method of a deck accessory includes: a feeding step S1 of feeding a strip-shaped steel plate from a steel plate coil; a forming step S3 of forming surface parts 120 and ribs 110 on the strip-shaped steel plate and a plurality of concave groove parts 130 on the surface parts 120; a length cutting step S4 of cutting the strip-shaped steel plate in a width direction to form the deck plate 100 with a specific length after the forming step S3; and a width cutting step S5 of cutting width end parts of the deck plate 100 along the longitudinal direction L of the deck plate 100.SELECTED DRAWING: Figure 6

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing a accessory, and more particularly to a method for manufacturing a accessory for a deck plate in which surface portions having a plurality of grooved portions and ribs are alternately and continuously formed.

Deck plates are widely used in constructing floor slabs and ceiling slabs of building structures. The deck plate is installed so as to span between the support beams, and both ends of the deck plate are fixed to the upper surfaces of the support beams. After fixing the deck plate, concrete is placed on the deck plate and solidified to construct a floor structure or a ceiling structure.

The deck plate is formed by bending a metal plate by roll forming or the like. Ribs are formed on the deck plate to increase rigidity (see Patent Document 1, for example).

JP 2017-120014 A

By the way, at the construction site where the concrete slabs that make up the floors and ceilings of the building are constructed, the width direction of the deck plate is measured using standard width products and accessory products for width adjustment. It is constructed according to Of these, the standard width products are reliably joined by inserting or fitting each other.

On the other hand, in order to flexibly adjust the width of accessory products, the flat part of the product is placed on the other product without inserting or fitting the products together. They are generally joined together by welding or screwing.

In accessory products obtained by cutting standard products, undulations may occur at the ends of flat plates in the width direction during the manufacturing process. If such waviness occurs, gaps will occur between accessory products, other products, and support beams when concrete is placed, resulting in slag leakage (exudation of placed concrete) and damage to the slab cross section. It can happen.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a technology for manufacturing accessories in which waviness at the ends in the width direction is suppressed.

In order to solve the above-described problems, a method for manufacturing a accessory according to the present invention provides at least a plurality of concave streaks and protrusive streaks extending in the longitudinal direction and formed at predetermined intervals in the transverse direction. A manufacturing method for a deck plate in which a surface part having one side and ribs are formed alternately and continuously, wherein the steel strip is sent out from a steel coil in which the steel strip is wound. a forming step of forming the surface portion, the rib, and the recessed portion on the surface portion of the steel strip; and after the forming step, cutting the steel strip in the width direction to form a deck plate of a predetermined length. and a width cutting step of cutting the width end portion of the deck plate along the length direction of the deck plate.

In the manufacturing method according to an aspect of the present invention, in the forming step, a folded portion is formed by folding one end portion of the surface portion in the width direction toward the rib side.

In the manufacturing method according to an aspect of the present invention, in the width cutting step, a predetermined width can be variably cut from the folded portion side.

According to the present invention, it is possible to suppress waviness at the ends of the accessory in the width direction.

FIG. 4 is a diagram showing a deck plate installed between support beams and a deck accessory according to the present invention; It is a perspective view of a deck plate. FIG. 2B is a cross-sectional view of the deck plate along line BB in FIG. 2A; It is a perspective view of a deck accessory. FIG. 3B is a cross-sectional view of the deck accessory taken along line BB in FIG. 3A; It is a schematic diagram showing a conventional manufacturing process of a deck accessory. FIG. 11 is a perspective view of another deck accessory; It is a figure which shows the manufacturing process of the deck accessory which concerns on this invention.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In the following description, the drawings are schematic, and it should be noted that the dimensional relationship of each element, the ratio of each element, and the like may differ from reality. Even between the drawings, there are cases where portions having different dimensional relationships, ratios, etc. are included.

FIG. 1 is a diagram showing a deck plate 100 installed between support beams 200 and a deck accessory 1 according to the present invention. The accessory according to the present invention is used when constructing floor slabs and ceiling slabs in which the deck plate 100 is used. In the following, the direction in which the deck plate 100 spans the support beams 200 of the building and the support beams 200 is defined as the longitudinal direction (longitudinal direction) L, and the direction in which the deck plate 100 is spread across the longitudinal direction L is defined as Let W be the lateral direction (width direction).

The deck plate 100 is bridged between supporting beams 200 facing each other. The deck plate 100 has one end placed on one support beam 200 and fixed to the support beam 200 by welding or the like, and the other end placed on the other support beam 200 and fixed to the support beam 200 by welding or the like. It is Specifically, the support beams 200 are made of, for example, H-section steel, and each end of the deck plate 100 is placed on and fixed to the flange portion of the H-section steel that constitutes each support beam 200. there is

The accessory 1 according to the present invention is laid to fill the gap in the width direction W between the deck plate 100 and the support beams 200 which are laid out. The accessory 1 is manufactured using a deck plate 100 as described later.

FIG. 2A is a perspective view of the deck plate 100. FIG. FIG. 2B is a cross-sectional view of deck plate 100 along line BB in FIG. 2A. The deck plate 100 is formed, for example, of a thin strip-shaped steel plate to which surface treatment such as galvanization is applied. The deck plate 100 is manufactured, for example, by roll-forming a flat strip-shaped steel plate with a roll forming machine. The deck plate 100 is bent at a plurality of locations by a roll forming machine. The deck plate 100 may not be subjected to surface treatment such as zinc plating.

The deck plate 100 includes, for example, three ribs 110a, 110b, 110c, a face portion 120, a grooved portion 130, a locking portion (folding portion) 140, and an end closing portion 150. Ribs 110 are formed to extend along the length direction L of deck plate 100 . That is, the rib 110 is continuously formed from one end to the other end along the suspension direction of the support beam 200 . The number of ribs 110 is not particularly limited, and may be one or two. In addition, when the ribs 110a, 110b, and 110c are not distinguished below, they may simply be referred to as "ribs 110".

Two ribs 110a and 110b near the locking portion 140, which will be described later, are formed by bending a strip-shaped steel plate. The ribs 110 a and 110 b have a pair of linear portions 111 and bent portions 112 . The straight portion 111 is bent toward one side of the strip-shaped steel plate and extends in a direction perpendicular to the surface portion 120 described later. The bent portion 112 is continuous with the straight portion 111 and is bent and folded back a plurality of times.

The pair of linear portions 111 are formed such that their surfaces are in contact with each other, and are connected to each other by caulking or the like. Thereby, the pair of linear portions 111 are prevented from being separated from each other. The bent portion 112 is formed in a substantially triangular shape when viewed in cross section, and is bent so that the start point and the end point are adjacent to each other so that the straight portions 111 are in contact with each other.

Of the three ribs 110a, 110b, and 110c, the rib 110c located farthest from a locking portion 140 described later (see FIG. 2B) has a pair of linear portions 111 and and a bent portion 112 . The rib 110c is inclined obliquely toward the surface portion 120 in a direction away from the straight portion 111 of the pair of straight portions 111 facing the side opposite to the ribs 110a and 110b. A receiving portion 113 is formed in the . A locking portion 140 , which will be described later, is inserted into the receiving portion 113 .

Rib 110 c also has an extension 114 . The extension portion 114 is a portion folded back by roll forming so as to extend parallel to the surface portion 120 from one of the pair of linear portions 111 forming the receiving portion 113 . When connecting the deck plates 100, a part of the surface portion 120 of the other deck plate 100 is superposed on the upper surface of the extending portion 114 of the rib 110c, and the locking portion 140 is inserted into the receiving portion 113. do.

The face portion 120 is a portion of the deck plate 100 where the ribs 110 are mainly not formed, and has a surface that mainly receives the load of concrete to be poured. The face portion 120 is formed between the ribs 110 of the deck plate 100 in the width direction W. As shown in FIG. That is, in the deck plate 100, the ribs 110 and the surface portions 120 are alternately formed. In the deck plate 100, each surface portion 120 is formed on the same plane.

The recessed streak portion 130 is formed by roll forming to which a steel strip corresponds. The concave streak portion 130 is formed so as to protrude concavely toward the side on which the rib 110 is formed on the surface portion 120 . As a result, the surface portion 120 alternately has flat portions and valley portions (peak portions when viewed from the rib 110 side).

The grooved portion 130 extends along the longitudinal direction L, and a plurality of grooved portions 130 are formed in the width direction W at predetermined intervals. For example, three are formed per one surface portion 120 . The number of grooves 130 is not particularly limited, and may be one, two, or four or more. Further, the number of recessed streaks 130 may be different in each surface portion 120 of one deck plate 100, and there may be a surface portion 120 in which the recessed streaks 130 are not provided. Furthermore, instead of the concave streak 130, the surface portion 120 may be formed as a protruding streak that protrudes convexly toward the side opposite to the side on which the rib 110 is formed. Both of the ridges may be mixed.

The locking portion 140 is formed at one end of the deck plate 100 in the width direction W by roll forming. The locking portion 140 is an end portion of a steel material that is curved substantially perpendicularly from the surface portion 120 and is folded back so as to extend along the extending direction of the ribs 110 . When the deck plates 100 are connected, the locking portion 140 of one deck plate 100 is positioned between the pair of straight portions 111 formed on the ribs 110 on the other end side of the other deck plate 100 . is inserted into the receiving portion 113 of the The locking portion 140 is provided at the edge of the deck plate 100 on the side away from the rib 110 in the width direction of the deck plate 100 .

The end closed portions 150 are formed at both ends of the deck plate 100 in the longitudinal direction L. As shown in FIG. The end closed portion 150 is formed by crushing both ends of the rib 110 in a direction perpendicular to the surface portion 120 of the deck plate 100 . As a result, the rib 110 is formed to have a cross section in which the closed end portions 150 at both ends are crushed. is formed in a substantially triangular shape in cross section. As a result, both ends of the rib 110 are lower in height than other portions, so that they can be placed on the top surface of the flange portion of the support beam 200 . The end closed portion 150 is formed such that the length along the extending direction of the rib 110 is longer than the length of the support beam 200 placed on the upper surface of the flange portion.

FIG. 3A is a perspective view of the deck accessory 1. FIG. FIG. 3B is a cross-sectional view of the deck accessory 1 along line BB in FIG. 3A. The deck accessory 1 is formed from the deck plate 100 described above. Specifically, it is manufactured by cutting a part of the deck plate 100 along the longitudinal direction L at a predetermined position in the width direction W from the side of the deck plate 100 where the locking portion 140 is formed. . In other words, the deck accessory 1 does not have the locking portion 140 on the deck plate 100 .

A cut edge 10 on the cut side of the deck accessory 1 extends linearly or substantially linearly along the longitudinal direction L. Here, even if the cut edge 10 of the deck material 1 is wavy, the deck material 1 is laid between the deck plate 100 and the support beam 200 so that the cut edge 10 is straight. This means that the gap between the side and the support beam 200 is small enough not to leak even if concrete is placed.

Next, a method for manufacturing the deck accessory 1 will be described. First, a conventional manufacturing method for deck accessories will be described. FIG. 4 is a diagram showing a conventional manufacturing process for a deck accessory. First, a steel strip is unwound from a steel strip coil in which the steel strip is wound (step S101). Next, mark holes and notches are formed in the unwound steel strip by press working, and the length of the steel strip is adjusted so that the steel strip has a predetermined width according to the width of the deck accessory to be formed into the steel strip. Width cutting is performed by the first pressing device on one edge side along the width direction (step S102). Here, the mark holes are formed at intervals in the flow direction corresponding to the length of the deck accessory 1 to be manufactured. The notches are formed on both edges of the strip steel plate along the flow direction, and are formed from both ends of the deck plate to a length that finally exceeds the end closed portion 150 in the longitudinal direction L.

Next, the ribs 110, the surface portions 120, and the grooved portions 130 are formed by roll forming in roll forming equipment on the downstream side in the flow direction with respect to the first press device (step S103). Also, the straight portions 111 of the ribs 110 are crimped to each other by a predetermined crimping machine. In step S102, since the steel strip has been cut into widths, the steel strip sent to the roll forming equipment (step S103) does not have a steel strip portion where the locking portion 140 is formed. 140 is not molded.

Next, in a second press device downstream in the flow direction with respect to the roll forming equipment, the formed work is cut in the width direction based on the mark holes formed in step S102 to form a formed work of a predetermined length. At the same time, both ends in the length direction are crushed to form the end-closed portions 150 (step S104). Thereby, the deck plate 100 is manufactured.

Next, at the slitter on the downstream side in the flow direction with respect to the second press device, the deck plate 100 is slit on the other edge side of the deck plate 100 opposite to the side cut in step S102 (step S105). Note that step S105 is executed as necessary based on the width of the deck accessory, and is not executed if unnecessary. As described above, a deck accessory is manufactured, and finally, a plurality of deck accessories are bundled and shipped.

When the deck accessory was manufactured in the above-described steps, undulations to an unacceptable degree as a product occurred along the longitudinal direction on one edge side of the deck accessory that was cut in step S102. However, it has been found that the problem of waviness is peculiar to the deck accessory 1 fitted to the deck plate 100, and that it frequently occurs particularly at the cut edges 10 away from the ribs 110 in the width direction W. Specifically, waving occurred in the forming work (strip-shaped steel plate) processed in the roll forming equipment in step S103.

On the other hand, even if another deck accessory 500 is manufactured in the same manufacturing process, the product As a result, no unacceptable waviness occurred.

FIG. 5 is a perspective view of another deck accessory 500. FIG. The deck accessory 500 includes a deck plate, for example, a rib 510 , a face portion 520 , a ridge portion 530 and an end closing portion 550 . The rib 510 , the face portion 520 and the closed end portion 550 of the deck accessory 500 are the same as the rib 110 , the face portion 120 and the closed end portion 150 of the deck accessory 1 .

The protruding portion 530 of the deck accessory 500 is formed by embossing a steel plate. The ridge portion 530 is formed to protrude toward the side opposite to the side on which the rib 510 is formed on the surface portion 520 . The ridges 530 extend along the width direction W, and a plurality of ridges 530 are formed in the length direction L at predetermined intervals.

Even after forming in the roll forming equipment in step S103 of the manufacturing process, the deck accessory 500 was not wavy. A possible reason why the waviness does not occur is that the deck accessory 500 is provided with a plurality of ridges 530 extending in the width direction W and spaced apart by a predetermined interval in the length direction L.

The load applied to the steel plate by roll forming causes strain not only in the width direction W of the steel plate but also in the length direction L. Residual stress can be reduced and the shape of the surface portion 120 can be maintained by providing the protruding portion 530 in the direction of canceling the difference and plastically deforming the steel sheet out of the plane. Therefore, it is considered that no waviness occurs on the edge 511 side. This can also be seen from the fact that when the deck plate 100 is manufactured, no waviness occurs in the vicinity of the engaging portion 140 and the extension portion 114, which are portions plastically deformed by roll forming.

On the other hand, when the deck accessory 1 is manufactured by the conventional manufacturing method, the portion 12 between one cut edge 10 in the width direction W of the deck accessory 1 and the nearest concave streak portion 130 (FIG. 3B). Although the forming rolls come into contact when forming the surface portion 120, the grooved portion 130 and the engaging portion 140 are not formed, so the distortion remains in the above portion 12 and the shape of the surface portion 120 cannot be maintained, resulting in waviness. can be considered. In other words, it was found that the locking portion 140 suppressed the occurrence of waviness.

Therefore, the manufacturing method according to the present invention has been invented for the purpose of manufacturing the deck accessory 1 so that the deck accessory 1 corresponding to the deck plate 100 is not wavy. In the method for manufacturing the deck accessory 1 according to the present invention, the surface portion 120 having a plurality of concave streak portions 130 extending in the length direction L and formed at predetermined intervals in the width direction W and the ribs 110 are A manufacturing method of a deck accessory 1 for deck plates 100 formed alternately and continuously, comprising a sending step S1 of sending out a strip-shaped steel plate from a steel plate coil in which the strip-shaped steel plate is wound; , a forming step S3 of forming a forming work having a surface portion 120, a rib 110, and a concave portion 130 on the surface portion 120 on a strip steel plate, and a deck plate of a predetermined length by cutting the forming work in the width direction W after the forming step S3. 100, and a width cutting step S5 of cutting the width end of the deck plate 100 along the length direction L of the deck plate 100. A method for manufacturing the deck accessory 1 according to the present invention will be specifically described below.

FIG. 6 is a diagram showing the manufacturing process of the deck accessory 1 according to the present invention. In the manufacturing line (not shown) of the deck accessory 1, a steel sheet coil, a first press, roll forming equipment, a second press, and a slitter are arranged in this order from upstream to downstream.

First, a steel strip is sent out by an uncoiler from a steel plate coil on which a steel strip is wound (step S1: sending step). Next, mark holes and notches are formed in the unwound steel strip by press working in a first press device (step S2: first press step). Here, the mark holes are formed at intervals in the flow direction corresponding to the length of the deck accessory 1 to be manufactured. The notches are formed on both edges of the strip-shaped steel sheet along the direction of flow, and are formed in a length extending in the longitudinal direction L so as to finally exceed the end closed portion 150 .

Next, the ribs 110, the surface portions 120, the grooved portions 130, and the locking portions 140 are formed by roll forming in roll forming equipment on the downstream side of the flow direction with respect to the first press device (step S3: roll molding process (molding process)). Further, in the roll forming step S3, the straight portions 111 of the ribs 110 are crimped to each other by a predetermined crimping machine. Unlike the conventional manufacturing process, the steel plate is not width-cut in the first pressing step S2, so that the locking portion 140 is formed in the forming work in the roll forming step S3.

Next, on the downstream side of the roll forming equipment in the flow direction, the forming work is cut in the width direction based on the mark holes formed in the first pressing step S2 in the second pressing device to form a predetermined length. A workpiece is formed, and both ends of the workpiece in the length direction L are crushed to form the end-closed portions 150 (step S4: second pressing step (length cutting step)). The deck plate 100 is manufactured up to the second pressing step S4.

Next, the deck plate 100 is cut by a predetermined amount in the width direction W in accordance with the width of the deck accessory 1 to be formed by the slitter on the downstream side in the flow direction with respect to the second press device. Specifically, the deck plate 100 is cut into width along one edge side along the length direction L of the deck plate 100, specifically, the side where the locking portion 140 is formed (step S5: width cutting process). In the width cutting step S5, width cutting may be performed on the other edge side based on the width dimension of the deck accessory 1, if necessary.

Here, the slitter has a pair of rotary blades. A pair of rotary blades are provided on each side of the width direction W of the deck plate 100 and cut the width direction W end of the passing deck plate 100 . The amount of movement of each rotary blade in the width direction W can be determined by program control. The block that supports the rotary blade is adapted to move in the width direction W as appropriate based on the operator's input data.

As described above, a deck accessory is manufactured, and finally, a plurality of deck accessories are bundled and shipped.

As described above, according to the present invention, width cutting is performed after manufacturing the deck plate 100 having the locking portion 140, which suppresses the occurrence of waviness in the conventional manufacturing process, so that the occurrence of waviness is significantly suppressed. be able to. As a result, when the deck plate 100 and the support beams 200 are laid down to fill the gaps between the deck plate 100 and the support beams 200 as accessories, for example, the formation of gaps between the support beams 200 is suppressed, and concrete slag leakage is suppressed. can be prevented.

Furthermore, by adjusting the amount of movement in the width direction W of the blocks that support the rotary blades in the slitter, the width cutting amount of the deck plate 100 can be freely changed.

<Others>
Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and includes all aspects included in the concept of the present invention and the scope of claims. Moreover, each configuration may be selectively combined as appropriate so as to achieve at least part of the above-described problems and effects. Further, for example, the shape, material, arrangement, size, etc. of each component in the above embodiment may be appropriately changed according to the specific usage of the present invention.

1 ... Deck accessories (accessories)
DESCRIPTION OF SYMBOLS 100... Deck plate 110,110a, 110b, 110c... Rib, 120... Surface part, 130... Concave part, 140... Locking part (folding part), 150... End closing Part S1: Sending process S2: First pressing process S3: Roll forming process (forming process)
S4: Second press step (length cutting step)
S5: Width cutting process

Claims (3)

For a deck plate in which ribs and surface portions having at least one of a plurality of concave and convex streaks extending in the longitudinal direction and formed at predetermined intervals in the transverse direction are formed alternately and continuously. A method of manufacturing a role product for manufacturing the role product of
A sending step of sending out the strip-shaped steel plate from a steel plate coil in which the strip-shaped steel plate is wound;
A forming step of forming a forming work having the surface portion, the rib, and the recessed streak portion on the surface portion on the steel strip;
a length cutting step of cutting the forming work in the width direction after the forming step to form a deck plate of a predetermined length;
a width cutting step of cutting the width end portion of the deck plate along the length direction of the deck plate;
A method for manufacturing a role item, comprising: 2. The method of manufacturing a accessory according to claim 1, wherein in the forming step, one end of the surface portion in the width direction is folded back toward the rib to form a folded portion. 3. The method of manufacturing the accessory according to claim 2, wherein in the width cutting step, the width can be variably cut from the side of the folded portion by a predetermined width.

Images