JPH0519762Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is used in slitting equipment that continuously feeds a steel strip and slits it into a predetermined width using upper and lower circular blade cutters. The present invention relates to a steel strip center detection device that detects the center in the width direction.

[Prior Art] FIG. 6 is a perspective view showing the general arrangement near the cutter portion of the above-mentioned slitting equipment. Reference numeral 1 designates a cutter incorporating a circular blade 1a, which has a pair of upper and lower shafts, whose shaft 1b is supported by a stand 2 via a chock 3, and is rotatably driven by a drive device (not shown). (the side is not exposed) 1a continuously slit the steel strip 4. 5 is a pinch roll that feeds the tip of the steel strip into the cutter 1.
Reference numeral 6 denotes a side guide that guides both side edges of the steel strip 4 by means of left and right vertical rolls 6a. The movement is adjusted from side to side according to the width of the steel strip. By operating the buttons on the control panel, the side guides 6 can be moved left and right while maintaining a fixed distance, or moved left and right symmetrically to enlarge or reduce the distance. You can also adjust the movement.

When slitting steel strip with the above-mentioned slitting equipment,
Normally, the edges on both sides remain as they were during rolling, so the edges on both sides are also slit, but the edges on both sides 4a
When cutting, if the width of the steel strip changes or there is camber (curvature in the left/right direction), the width of the cut edges on the left and right sides may become uneven, or the width of the product may be insufficient. If the edge dimensions are uneven and one side becomes thinner, edge breakage is likely to occur. The edge 4a is processed by winding it on an edge winding drum or shredding it with a scrapper, but if the edge breaks while the line is running, the line will stop because the edge cannot be processed. This reduces productivity. Furthermore, if the width of the product is insufficient, the product will be defective, resulting in a lower yield.

For this reason, it is necessary to align the strip center (the center of the strip in the width direction) with the cutter center (the center of the cutter in the width direction). ) to judge whether the center of the strip is aligned with the center of the cutter or not. If a misalignment is detected, the side guide 6 adjusts the strip by moving it in the width direction. The steel center was aligned with the cutter center.

[Problems that the invention aims to solve] As mentioned above, the conventional method of visually determining the deviation of the left and right edges may overlook the problem or delay the response, so it is difficult to detect variations in width or camber in the steel strip. It was not possible to sufficiently prevent edge breakage and insufficient product width when the product was heated.

This idea was made in consideration of the above circumstances,
The present invention aims to make it possible to reliably detect the center of a steel strip using a simple mechanism, thereby preventing edge breakage and insufficient product width.

[Means for Solving the Problems] In order to solve the above problems, this invention connects the first link and the second link, which are equal in length, at one end, and attaches a strip steel surface to the other end. Attach a Tatsuchi roll that contacts the side edge from the left and right, connect the third link and the fourth link of equal length at one end, and place the other ends at positions equidistant from the first link and the second link. Connect each,
The link mechanism of the first, second, third, and fourth links is constructed in a plane perpendicular to the steel strip, and
An indicator bar passing through the connection point between the link and the second link and the connection point between the third link and the fourth link is attached, and an indicator bar detection device is provided to detect a deviation between the indicator bar and the cutter center.

[Function] If each link is expressed geometrically, as shown in Figure 2, the first link is AB, the second link is AC, and the third link is
Link or DE, the fourth link is DF. Also, the instruction bar is AD, and points B and C are Tatsuchiroru.

Since △AEF and △DEF are both isosceles triangles, AD bisects angle EAF, and △
Since ABC is also an isosceles triangle, AD is always BC
coincides with the perpendicular line drawn in the center of. Therefore, the indicator bar is always directly above the center of the strip, and by detecting the position of the indicator bar with the indicator bar detection device, it is possible to easily detect the deviation between the center of the strip and the cutter center.

[Example] An example of the present invention will be described below with reference to the drawings. FIG. 3 is a plan view of the vicinity of the cutter. The cutter 1, pinch roll 5, and side guide 6 are the same as the conventional one, but the strip steel center detection device 7 of the present invention is arranged upstream of the side guide 6. ing.

To explain the details of this steel strip center detection device 7, as shown in a perspective view in FIG. 1, a first link 8 and a second link 9 of equal length are connected at one end A, and the other ends B and are each equipped with a Tatsuchi roll 10 that contacts the side edges of the steel strip 4 from the left and right sides,
The third link 11 and the fourth link 12, which have the same length, are connected at one end D, and the other ends E and F are connected from the point A of the first link 8 and the second link 9, etc. The connection point A between the first link 8 and the second link 9 is connected to each distance position.
A connection point D between the third link 11 and the fourth link 12
An indicator bar 13 passing through the cutter is attached, and an indicator bar detection device 14 is provided to detect a deviation between the indicator bar 13 and the center of the cutter in the width direction.

The Tatsuchi roll 10 is rotatably supported by a support frame 10a, and the lower ends of the first link 8 and the second link 9 are connected with pins on the upper surface of the support frame 10a. An air cylinder 15 is provided on the outside of the support frame 10a to push the support frame 10a toward the center of the steel strip and bring the touch roll 10 into contact with the side edge of the steel strip.

The lower end of the indicator bar 13 is attached to the connection point D between the third link 11 and the fourth link 12, and the upper end is slid into a hole in a guide 16 provided at the connection point A between the first link 8 and the second link 9. It is inserted so that it can move.

To explain the details of the indicator bar detection device 14, the gate-shaped frame 17 is connected to the Tatsuchiroll 1, for example.
As shown in the side view in FIG. As shown in FIG. 5, two sets of emitters 20 and two receivers 21 are respectively attached to the horizontal upper plate 19a and lower plate 19b of the glyph frame 19 with an interval l in the width direction of the steel strip. fixes the indicator plate 22. The center of the two light projectors 20 and the light receiver 21
The center of is fixed so as to coincide with the cutter center, and the distance l between the left and right sides is set wider than the width m of the indicator plate 22 by the allowable limit for the deviation of the center of the strip. Note that the cutter center is set to match the line center of the slitting equipment, so it has the same meaning as the line center.

The support member 18 is of a sliding type that can be moved and adjusted so that it can be accurately positioned at the center of the cutter, and is fixed with a set bolt.

In the above configuration, the left and right Tatsuchi Rolls 10
are pushed toward the center by the air cylinder 15, so even if width fluctuation or camber occurs in the steel strip, they move following the width of the steel strip and are always in contact with both side edges of the steel strip. Therefore, as explained in the operation section, the indicator bar 13 always points to the strip center.
Now, assuming that the strip center coincides with the cutter center, as shown in Fig. 5, the indicator plate 2
2 is located at the center and does not obstruct the light beam to the receiver 21. However, if the center of the strip shifts due to variations in the width of the strip, camber, etc., the indicator plate 22 integrated with the indicator bar 13 will shift, and the amount of shift will change. When the tolerance is exceeded, the light receiver 21 on the deviated side is shut off, thereby detecting the deviation of the strip center from the cutter center.
In conjunction with this, the side guide 6 moves in the opposite direction to the blocked light receiver 21, that is, in the direction to correct the misalignment, to correct the misalignment of the center of the strip steel, and to allow light to enter the light receiver 21 again. When it hits, the side guide 6 stops.

Note that each of the first, second, third, and fourth links 8,
Regarding points 9, 11, and 12, in Figure 2, if AE (AF) = BE (CF) = DE (DF), then the height position of point D will remain the same as point B even if the distance between BC changes. It is at the same height as point C and does not change. Therefore, even if the distance between the left and right Tatsuchi rolls 10, 10 changes due to a change in the width of the steel strip, the indicator bar 13 fixed at point D remains constant without moving up or down. Similarly, the indicator plate 22 is always at a fixed position. Therefore, the center of the strip can be stably detected, and there is no need for troublesome adjustments such as readjustment when slitting materials with different strip widths.

In addition, the indicator bar detection device 14 is not limited to the structure of the above embodiment, but may have a structure in which, for example, a hole is formed in the center of the indicator plate 22, a pair of light emitter and light receiver are positioned at the center of the cutter, and light is emitted and received through the hole. Alternatively, the structure may be such that the indicator bar 13 is directly detected instead of the indicator plate. In short, any structure that can detect the indicator bar 13 may be used.

Furthermore, the side guide 6 does not necessarily have to be linked to the indicator bar detection device 14; instead, an indicator lamp that lights up when the light receiver 21 is cut off is provided, and when a person sees the lighting of this indicator lamp, a person can perform operations on the operation panel. The side guide 6 may be moved and adjusted using a button to align the steel strip with the center of the cutter.

Although the above explanation is for continuous operation, it is also valid for the initial operation of feeding the tip of the steel strip into the cutter 1. In other words, when feeding the tip of a coiled steel strip supported by an uncoiler to the cutter 1, conventionally, while visually checking the offset of the edges on both sides of the strip, the center of the strip was moved to the side so that it aligned with the center of the cutter. Adjusting the guide 6 was a complicated work, but according to the present invention, the deviation between the center of the strip and the center of the cutter can be immediately detected.
It is easy to operate the side guide 6 remotely (or automatically) to correctly feed the tip of the steel strip into the cutter 1, and the loss time when feeding the tip of the steel strip is shortened.

[Effect of the invention] As explained above, according to the invention, the first link and the second link having the same length are connected at one end,
At the other end, a tatsuchi roll that contacts both sides of the steel strip from the left and right is attached, and a third roller of equal length is attached.
The link and the fourth link are connected at one end, and each other end is connected to the first link, and
The link mechanism of each of the first, second, third, and fourth links is configured in a plane perpendicular to the steel strip, and the first link and the second link are connected to each other at equidistant positions of the second link. An indicator bar passing through the connection point between the third link and the fourth link is installed, and an indicator bar detection device is installed to detect the deviation between this indicator bar and the center of the cutter in the width direction.
It produces the following effects.

(i) Detection of misalignment of the strip center with respect to the cutter center was realized using an extremely simple mechanism. In other words, by using the above-mentioned link mechanism as a mechanism for detecting the center of the steel strip and configuring it vertically, it does not occupy a large space and does not require special members to form the link mechanism. (In other words, since the link stands on its own, there is no need for a member to stably hold the link.) Therefore, the structure is simple, the number of members is small, and the structure can be lightweight. Obtained.

(ii) Therefore, it becomes easy to slit the strip by aligning the center of the strip with the cutter center so that the edges on both sides do not shift, and the occurrence of edge breakage or insufficient product width is prevented.
Productivity and yield improved.

(iii) By linking the detection device of the present invention with a side guide, automation of strip center alignment can be easily realized.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, in which Figure 1 is a perspective view of the strip center detection device, Figure 2 is an explanatory diagram of the operation, and Figure 3 is a diagram of the area near the cutter. A plan view, FIG. 4 is a side view of the indicator bar detection device portion in FIG. 1, and FIG. 5 is a side view of the pointer bar detection device portion in FIG.
The line sectional view and FIG. 6 are perspective views of the vicinity of a general cutter portion in slitting equipment. 1... cutter, 4... steel strip, 6... side guide, 7... steel strip center detection device, 8... first link, 9... second link, 10... tatsuchi roll, 11... third Link, 12... 4th link,
13...Instruction bar, 14...Indication bar detection device,
15...Air cylinder.

Claims (1)

[Claims for Utility Model Registration] Said side guide in a slitting equipment equipped with a side guide that guides the steel strip by contacting both edges of the steel strip that is continuously fed and is adjustable in moving the steel strip in its width direction. A strip steel center detection device disposed on the upstream side of the steel strip, wherein a first link and a second link of equal length are connected at one end, and the other end is connected to the surface side edge of the strip from the left and right. A third link and a fourth link having the same length are connected at one end, and the other end is connected to the first link,
and connected to the second link at equidistant positions, and the link mechanism by each of the first, second, third, and fourth links is configured within a plane perpendicular to the steel band,
An indicator bar passing through the connection point between the first link and the second link and the connection point between the third link and the fourth link is installed, and an indicator bar detection device is provided for detecting a deviation between the indicator bar and the cutter center. A strip steel center detection device in slitting equipment characterized by: