JP5420966B2 - Pass line switching method and pass line switching device in continuous processing line of metal strip - Google Patents

Description

The present invention relates to a pass line switching method and a pass line switching device in a continuous processing line of a metal strip.

  The metal band continuous processing line includes various processing apparatuses that, for example, rewind a coiled metal band, perform correction, surface treatment, heat treatment, and the like, and then wind the coiled metal band. In the continuous processing line as described above, only a part of the processing may be performed to bypass other processing zones.

In such a case, as a method of switching the pass line through which the metal band passes, conventionally, the metal band is cut at the branch point of the pass line and separated into the preceding metal band and the subsequent metal band, and then the subsequent line. The leading end of the metal strip is manually guided to pass through, or connected to the tail end of the metal strip left on another pass line portion to pass through.

In particular, when the sheet passing space is at a high position away from the work floor or in a narrow place, the guidance work may be a heavy labor with a danger. Furthermore, it takes a long time to switch the pass line, which has been a factor in reducing productivity. Therefore, various methods have been proposed in the past to deal with such problems.

For example, in Japanese Patent Application Laid-Open No. 5-154533 (Patent Document 1), as a method for passing a bridle roll in a steel strip continuous processing line, a leading rope and a follow rope are attached to the leading end and the edge of the steel strip via connecting fittings, respectively. After that, let the steel strip pass through the winch on the exit side of the bridle roll, then return the leading rope to the entrance side via the follow rope with the entrance winch, and deposit this leading rope on the rope receiver provided near the bearing of the bridle roll. The method of making it wait is described.

Further, in Japanese Patent Application Laid-Open No. 2008-178900 (Patent Document 2), the metal strip is cut at a position upstream of the line from the branch portion of the pass line portion, separated into a preceding material and a following material, Move and pass the old pass line part, the tail end of the preceding material is positioned near the merge part of the pass line part, introduced into the pass line, and the tip of the rope passed through the new pass line part Is connected to the tail end of the preceding material, and then the rope R is wound up by a winding device, and the leading material is pulled into the newly used pass line portion, and the tail end of the preceding material is branched into the pass line portion. After connecting the tail end of the preceding material and the rope R to the upstream side of the line and joining the tail end of the preceding material and the tip of the following material by welding, the pass line part is switched. It describes how to complete.

As described above, various methods for improving the sheet passing work have been proposed, but are still insufficient.
That is, in the method disclosed in Japanese Patent Laid-Open No. 5-154533 (Patent Document 1), the steel strip cannot be processed until the leading rope is returned to the entry side of the bridle roll. In addition, the method disclosed in Japanese Patent Application Laid-Open No. 2008-178900 (Patent Document 2) has a problem in that it is necessary to process the leading ends of the preceding material and the succeeding material to be narrow and to provide a rope through hole.

JP 5-154533 A JP 2008-178900 A

Here, the present invention has been made to solve the above-described problems, and when switching the metal band pass line in the metal band continuous processing line, the safety of manual work is ensured in a short time. The object is to provide a method that can be implemented.

The features of the present invention for solving the above-described problems are as follows.
The method for switching a pass line in a continuous treatment line for a metal strip according to claim 1, wherein in the continuous treatment line for a metal strip, the line has two pass line portions for selectively passing the metal strip by switching. the metal strip from a first pass line section which Tsuban, since the branch point between the first pass line portion, to switch to the second pass line portion having a substantially horizontal path and it continues Ku substantially vertical pass a method, in the second pass line portion, a second wire rope along the first wire rope and before Symbol substantially vertical path along the front Symbol substantially horizontal path has been stretched, in the stopped state The metal strip is cut at a position on the line entry side with respect to the branching point, and separated into a preceding metal strip and a trailing metal strip, and then the leading end of the trailing metal strip is substantially horizontal on the branching point exit side . Guide to the entrance side of the path, The end is clamped by the clamp of the metal band pulling jig, and the pull is suspended on the first wire rope on the magnet suction part of the metal band pulling jig that is rotatably connected to the clamp. By energizing and adsorbing the magnet and driving the wire rope, the leading end of the trailing metal band is guided to the end point of the substantially horizontal path, and the traction magnet is demagnetized at the end point. By separating the magnet attracting part and attracting the receiving magnet installed on the second wire rope to the magnet attracting part hanging in a substantially vertical direction by the separation, and driving the wire rope, The leading end of the trailing metal strip is guided to the end point of the substantially vertical path.

According to a second aspect of the present invention, there is provided the pass line switching device according to the first aspect of the present invention, wherein the metal band is first passed through the metal band continuous processing line having two pass line portions through which the metal band is selectively passed by switching. A path line switching device for switching from a path line section to a second path line section having a substantially horizontal path and a subsequent substantially vertical path after a branch point with the first path line section,
Metal band traction for sandwiching and guiding the first wire rope along the substantially horizontal path and the second wire rope along the substantially vertical path in the second path line section, and the leading end of the metal band Made of ingredients,
The first wire rope and the second wire rope each have a pulling magnet and a receiving magnet, and are attracted to or pulled from the metal band pulling jig by exciting or demagnetizing the pulling magnet and attaching / detaching the receiving magnet. The tip of the metal strip is guided by separating.

According to a third aspect of the present invention, in the pass line switching device according to the second aspect, the metal band traction jig is rotatable with a part including a clamp part that sandwiches a tip part of the metal band and a part including the clamp part. And a part including a magnet attracting part having a attracting surface and a pulling magnet or a receiving magnet.

  ADVANTAGE OF THE INVENTION According to this invention, when switching a metal band pass line in a continuous processing line of a metal band, while being able to aim at the safety of manual work, switching of a pass line can be implemented in a short time.

It is an elevation view of an example of a pass line switching device according to the present invention. It is a top view of the example of the pass line switching apparatus by this invention. The metal band pulling jig in the example of the pass line switching device by this invention is shown. 1 shows a pass line to which an example of a pass line switching device according to the present invention is applied. The state of the metal band pulling jig when shifting from a substantially horizontal path to a substantially vertical path in the example of the pass line switching device according to the present invention is shown. The cross-sectional structure of the receiving magnet in the example of the pass line switching apparatus by this invention is shown.

FIG. 1 is an elevation view of an example of a pass line switching device showing an embodiment of the present invention, which is used when switching from the first pass line shown in FIG. 4 to the second pass line. It is installed. FIG. 2 is a plan view of a substantially horizontal path portion in the apparatus example.

The pass line shown in FIG. 4 is a part of a metal band continuous processing line having a first pass line portion and a second pass line portion. In the first pass line portion, the metal band is rewound by a decoiler (not shown) from the coil shape, and is corrected by a straightening machine (not shown) so that the common part of the first pass line portion and the second pass line portion is formed. The common pass line 200 is reached, rises in a substantially vertical direction through the deflector roll 100, and passes through the pass lines 300, 301, and 302 in the surface treatment zone (not shown) through the deflector rolls 101 and 102. Then, it reaches the pass line 303, and then is wound up from the pass line 201 through the deflector roll 103 by a coiler (not shown) on the line exit side.

In the second pass line portion, after the metal band reaches the common pass line 200, it rises in a substantially vertical direction through the deflector roll 100, and passes the pass lines 400, 401, 402, 403 along the way. After passing through the deflector rolls 101, 110, and 111, it reaches the pass line 403, and after that, it passes through the deflector roll 103 and is wound around the pass line 201 by a coiler (not shown) on the line exit side.
The distance between the deflector rolls 101 and 110 is 7 m, the distance between the deflector rolls 110 and 111 is 2 m, and the distance between the work floor and the pass line 401 is 3 m.

Here, a method for switching the pass line from the first pass line unit to the second pass line unit will be described.
In the pass line section shown in FIG. 4, the pass line switching device shown in FIG. 1 is installed. The positional relationship between the pass line unit and the pass line switching device can be understood from the positions of the deflector rolls 101, 110, and 111 in FIGS.

The pass line switching device includes a first wire rope 10 and a second wire rope 11 that are stretched, manual winches 30, 31 that drive the respective wire ropes, and a plurality of routes through which the wire ropes pass. Sheaves 20 a, 20 b, 21 a, 21 b, 22 a, 22 b, 23 a, 23 b, 24, 25 a, 25 b, 26 a, 26 b, metal band traction jig 1, and traction magnet 2 suspended on the first wire rope 10 And a cord 4 for the traction magnet and its cord reel 5 (power supply is not shown), a stopper 6 and a receiving magnet 7 installed on the second wire rope 11.

The wire rope, winch, magnet, etc. can be appropriately determined depending on the mass and strength of the metal strip to be passed.
In the present embodiment, the metal strip is an aluminum alloy plate having a thickness of 0.1 to 1 mm and a width of 500 to 1600 mm. The wire rope is a plated wire rope having a wire diameter: 4 mm and a wire configuration (JIS G3525): 6 × 7 (seven main wires, six twisted core fibers). The winches 30 and 31 are commercially available open / close winches (manufactured by Yamaten, CW-60Y). The traction magnet 2 is an electromagnet having a diameter of 50 mm and a maximum attractive force of 490 N. As shown in FIG. 6, the receiving magnet 7 includes a tubular case 7 c attached to the second wire rope 11 through an angle, a permanent magnet 7 a having a diameter of 50 mm and an attractive force of 245 N attached to the inside thereof. The permanent magnet 7a attracted to the inner upper end surface of the tubular case is composed of a handle 7b for separating the permanent magnet 7a in the axial direction of the tubular case 7c, and a handle frame 7d. It can be easily operated by holding the handle 7b and the handle frame 7d with one hand.
Since the receiving magnet 7 is stably moved in the vertical direction by the second wire rope 11, a guide rail (not shown) is laid in parallel with the wire rope 11.

The winches 30 and 31 are not limited to a manual type, and an electric type or the like can also be used. Further, the receiving magnet 7 is constituted by a permanent magnet because the release position is a height that can be reached by a human hand, but an electromagnet may be used in the same manner as the traction magnet.

The metal strip in the stopped state in a continuous process line, at a branch point (differential collector roll 101 of the first pass line portion and a second pass line portion, a first pass line portion and a second pass line section Is cut at a position closer to the line than the position where the line intersects) and separated into a preceding metal band and a subsequent metal band, and then the leading end of the subsequent metal band is moved to a substantially horizontal path on the branch origin side ( Guide to the entry side of the pass line 401). Next, the center part in the width direction of the leading end portion 40 of the trailing metal band is clamped by the clamp part 1a of the metal band pulling jig 1 according to the present invention, and the clamp part side connecting part 1g and the magnet attracting part side connecting part. The traction magnet 2 is excited and attracted to a magnet attracting portion 1h that is rotatably coupled to 1i.
Thereafter, by driving the first wire rope with the winch 30, the leading end portion of the trailing metal strip is passed through to the end point portion of the first pass line portion. The end point is the position of the stopper 6 with which the traction magnet 2 comes into contact.
Further, in order to support the metal band when the metal band hangs down, a plurality of guide bars 8 are provided in the width direction of the metal band. Further, by installing a transparent acrylic plate (not shown) between the guide bar 8 and the pass line or on the guide bar 8, the guide bar is not damaged by the guide bar when the leading end 40 of the trailing metal band is guided. Can be prevented.
In the first wire rope, the solid arrow direction indicates the wire rope drive direction when guiding the metal band, and the broken arrow direction indicates the wire rope drive direction when moving the traction magnet in the entry direction. Each is shown.

When the traction magnet 2 is demagnetized and separated from the magnet attracting portion 1h at the end point portion, the magnet attracting portion 1h hangs down in a substantially vertical direction as shown in FIG. At that time, the second wire rope 11 is driven by the winch 31 in advance so that the magnet attracting portion 1h is in contact with the upper end surface of the receiving magnet 7 attached to the second wire rope 11. Let's wait. By driving the second wire rope 11 in a state where the magnet attracting portion 1h is attracted to the upper end surface of the receiving magnet 7, the leading end portion of the trailing metal strip is clamped by the clamp portion 1a of the metal strip pulling jig 1. After being lowered and guided to the exit side of the deflector roll 111, the handle 7b of the receiving magnet 7 is pulled downward to separate the receiving magnet 7 from the magnet attracting portion 1h.
In the second wire rope, the solid arrow direction indicates the wire rope drive direction when guiding the metal band, and the broken arrow direction indicates the wire rope drive direction when the receiving magnet is moved in the entrance direction. Each is shown.

  Next, the metal line pulling jig 1 is removed from the leading end of the trailing metal strip, and the switching of the pass line is completed by passing the leading end of the trailing metal strip to a coiler (not shown). To do.

Needless to say, when the leading end of the trailing metal strip is guided, the metal strip is rewound from the uncoiler by a line inching or moving at a low speed.

FIG. 3 shows a metal band pulling jig 1 according to the present invention. The metal band pulling jig 1 includes a part that holds the metal band and a part that is attracted to the magnet. The clamp part 1a of the part which pinches | interposes a metal band is substantially rectangular shape (40 mm x 120 mm) long in the width direction of the metal band to pinch, The plate-shaped rubber | gum which is not shown in figure is stuck on the inner surface side, Can be firmly held so as not to come off. Further, a screw portion 1f and a clamp portion side connecting portion 1g are extended at the tip of the shaft portion 1d connected to the clamp portion 1a, and the tension of the spring 1c is adjusted by a nut 1e for adjusting the length of the screw portion 1f. By changing the condition, the clamping force of the clamp part 1a can be adjusted, and the clamp part 1a can be opened and closed by the lever 1b to hold and release the metal band. On the other hand, the part attracted to the magnet is composed of a magnet attracting part 1h and a magnet attracting part side connecting part 1i having a substantially oval shape (70 mm × 105 mm, thickness 10 mm). The clamp part side connecting part 1g and the magnet attracting part side connecting part 1i are both ring-shaped as shown in the figure (inner diameter 20 mm, outer diameter 30 mm) and are rotatably connected to each other. That is, the part which clamps the metal band of the metal band pulling jig 1 and the part which is attracted to the magnet can rotate with each other.
In addition, the part which pinches | interposes the said metal strip can be manufactured by joining the flat plate of a required dimension to the holding part of a commercially available vice plier by welding etc., or depending on the dimension of a flat plate, using the vice plier for sheet metal as it is. it can.
In addition, by connecting the two parts sandwiching the metal band via the clamp part side connecting parts 1g, it is possible to connect the preceding material and the succeeding material and pass through them.

The time required for switching the pass line in the above embodiment is 37 minutes per time in the past, but can be reduced to 16 minutes per time. Also, it was possible for two people to work with one person.

DESCRIPTION OF SYMBOLS 1 Metal band pulling jig 1a Clamp part 1b Lever 1c Spring 1d Shaft part 1e Nut 1f Screw part 1g Clamp side connection part 1h Magnet adsorption part 1i Magnet adsorption part side connection part 2 Traction magnet 3 Suspension of a traction magnet on a wire rope Rope 4 Traction magnet cord 5 Cord reel 6 Stopper 7 Receiving magnet 7a Permanent magnet 7b Handle 7c Tubular case 7d Handle frame 8 Guide bar 10, 11 Wire ropes 20a, 20b, 21a, 21b, 22a, 22b, 23a, 23b, 24 25a, 25b, 26a, 26b Sheaves 100, 101, 102, 103, 110, 111 Deflector rolls 200, 201 Common pass lines 300, 301, 302, 303 First pass lines 400, 401, 402, 403 Second Pass line

Claims (3)

In the continuous processing line of the metal strip having two pass line portions for selectively passing the metal strip by switching in the line, the first pass line from the first pass line portion through which the metal strip passes A method for switching to a second path line unit having a substantially horizontal path and a subsequent substantially vertical path after a branch point with the unit,
In the second pass line portion, a first wire rope along the substantially horizontal path and a second wire rope along the substantially vertical path are stretched,
The metal band in a stopped state is cut at a position on the line entry side with respect to the branch point, and separated into a preceding metal band and a trailing metal band, and then the leading end of the trailing metal band is placed on the branch point exit side. The metal band pulling jig connected to the clamp part and rotatably connected to the leading end of the trailing metal band with the clamp part of the metal band pulling jig. By energizing and attracting a traction magnet suspended from the first wire rope, and driving the wire rope, the leading end portion of the trailing metal strip is moved to the end of the substantially horizontal path. To the department,
In the end point portion, the traction magnet is demagnetized and separated from the magnet attracting portion,
By adsorbing the receiving magnet installed on the second wire rope to the magnet attracting portion that hangs down in a substantially vertical direction by the separation, and driving the wire rope, the tip of the trailing metal strip Is guided to the end point of the substantially vertical path. A method for switching a pass line in a continuous processing line of a metal strip. In the continuous processing line of the metal strip having two pass line portions for selectively passing the metal strip by switching in the line, the first pass line from the first pass line portion through which the metal strip passes A path line switching device for switching to a second path line section having a substantially horizontal path and a subsequent substantially vertical path after a branch point with the section,
Metal band traction for sandwiching and guiding the first wire rope along the substantially horizontal path and the second wire rope along the substantially vertical path in the second path line section, and the leading end of the metal band Made of ingredients,
The first wire rope and the second wire rope each have a pulling magnet and a receiving magnet, and are connected to and disconnected from the metal band pulling jig by exciting and demagnetizing the pulling magnet and attaching / detaching the receiving magnet. By doing
A pass line switching device for guiding a tip of the metal strip. The metal band pulling jig includes a portion that includes a clamp portion that clamps the tip end portion of the metal band, and a magnet that has a surface that is rotatably connected to the portion including the clamp portion and that attracts the pulling magnet or the receiving magnet. The path line switching device according to claim 2, comprising a part including a portion.