JPH1094897A - Plate positioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely position a plate even when spatters or burrs are adhered to a clamping equipment and a roller shear equipment by mounting a detection sensor for detecting the plate width end on a reciprocating means close to each lower surface of a rear end part of a preceding coil and a forward end part of a succeeding coil. SOLUTION: A clamp 23 clamps a preceding coil 21. A cutting equipment 25 is reciprocated in the direction across the coil. A detection sensor 20 detects the plate width end on each side of a preceding coil 21 and succeeding coil in the middle of reciprocation. The cutting equipment 25 is moved to the center of the preceding coil and the succeeding coil and cuts the coil. The detection sensor 21 is arranged opposite to a lower side of an L-shaped part on which the coil 21 is clamped. The plate width end can be correctly detected irrespective of detection of the plate width end even when spatters in welding or burrs in cutting are adhered to a side of the clamp equipment 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material positioning apparatus for adjusting the position of a coil end at a welding position for welding and connecting the ends of a thin coil material such as a continuous rolling line or a pickling line of the thin coil material. Things.

[0002]

2. Description of the Related Art FIG. 3 is a configuration diagram showing the configuration of a conventional plate material positioning apparatus disclosed in Japanese Patent Publication No. 2-25795. In the figure, 1 is a preceding coil material, 2 is a succeeding coil material, 3 is a preceding coil material clamping device in a welding machine arranged on a line, 4 is a subsequent coil material clamping device, and the preceding coil material clamping device 3 is It has a structure that can move in the width direction of the board. Reference numeral 5 denotes a cutting device, which is composed of a roller shear upper portion 5a and a lower portion 5b for cutting the end of the plate material. The end portions of the coil material 1 and the subsequent coil material 2 are trimmed, and reciprocate in a direction crossing the line. Reference numerals 6a and 6b denote photoelectric detectors for detecting a width end of the plate material, and have a configuration in which a light source is arranged above an object to be detected and a detection unit is arranged below the object. 7a and 7b are pulse encoders. Photoelectric detectors 6a, 6b and pulse encoders 7a, 7
b is attached to each of the roller shear devices 5a and 5b so as to face the preceding coil material 1 and the succeeding coil material 2 near the cutting line. The photoelectric detectors 6a and 6b detect the width edges of the preceding coil material 1 and the succeeding coil material 2, respectively, and are electrically connected to the pulse encoders 7a and 7b, respectively. 10 is a hydraulic pressure source, 11 is an electromagnetic switching valve, 12
Is a hydraulic cylinder, and 13 is a feedback device. 1
Reference numeral 4 denotes a center positioning drive mechanism to which the leading coil material clamping device 3 is attached and which can reciprocate the leading coil in the width direction of the plate. The alignment drive mechanism 14 constitutes a center position alignment drive control mechanism.

Next, the operation will be described. The butted ends of the preceding coil material 1 and the succeeding coil material 2 fed on the line are fixed by the preceding coil material clamping device 3 and the succeeding coil material clamping device 4, respectively. Then
When the movement of the roller shear devices 5a and 5b is started from the original position and the cutting process of both coil material ends is started, the photoelectric detector 6
a, 6b and the pulse encoders 7a, 7b also start to move at the same time. Each of the photoelectric detectors 6a and 6b is a front width end (P11) of the preceding coil material 1 and the succeeding coil material 2,
When (P1t) is detected, the distances (G1), (G1), (G1) from the movement start point to the detection position are detected by the respective detection signals.
The pulse encoder 7 detects the number of pulses corresponding to t) and
a and 7b are input to the arithmetic unit 9 and stored.

Subsequently, the roller shear devices 5a and 5b move forward, and this time the photoelectric detectors 6a and 6b detect the front width ends (P21) and (P2t) of the preceding coil material 1 and the succeeding coil material 2 respectively. At this time, the movement distances (Tl) and (Tt) from the movement start point to the end of each plate width according to the generated signal
The number of pulses corresponding to the following is obtained from these electric pulse data that has entered the arithmetic unit 9 from the pulse encoders 7a and 7b.
The displacement amounts (m1) and (m2) of the preceding coil material 1 and the succeeding coil material 2 are (Equation 1) and (Equation 2), respectively, and the final plate width adjustment movement amount (dS) is (Equation 3). Is calculated. ml = (Gl + Tl) / 2-N (formula 1) mt = (Gt + Tt) / 2-N (formula 2) dS = mt-ml = (Tt + Gt-Tl-Gl) / 2 (Equation 3) Both displacements (m1) and (mt) are feedback-controlled, and the leading coil is clamped by the center positioning drive mechanism. The coil material clamp device 3 is moved by dS, and the center positions of the preceding coil material 1 and the succeeding coil material 2 are matched to be welded.

The preceding coil material clamping device 3 or the succeeding coil material clamping device 4 and the roller shear devices 5a, 5b
Are as shown in FIG. The gap C between the preceding coil material clamping device 3 or the succeeding coil material clamping device 4 and the upper portion 5a of the roller shear is set short so that the burrs after cutting are reduced. As shown in FIG. 5, the photoelectric detectors 6a and 6b for detecting the width ends of the preceding coil material 1 and the succeeding coil material 2
A light source is mounted on the upper side in front of the sensor, and a detector is mounted on the lower side. The photoelectric detectors 6a and 6b are provided through a gap C between the preceding coil material clamping device 3 or the succeeding coil material clamping device 4 and the upper portion 5a of the roller shear device 5. Are detected, and the position blocked by the width end of the preceding coil material 1 or the succeeding coil material 2 is detected as the width end.

[0006]

The conventional apparatus for aligning plate materials is constructed as described above, and the gap C between the clamping device and the upper part of the roller shear device is usually set small. As shown in FIG. 6, when welding spatter or burrs at the time of cutting adhere to the position of the width end of the side surface of the clamp device, the optical signal of the photoelectric detector does not reach the detector, and the width end of the width is reduced. There was a problem that it was not detected.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to ensure that even when welding spatter or burrs during cutting adhere between the side surface of the clamp device and the upper portion of the roller shear device, It is another object of the present invention to provide a plate material positioning device for reliably performing plate material positioning.

[0008]

According to a first aspect of the present invention, there is provided an apparatus for aligning a plate material, wherein a detection sensor of a plate width end detecting means is provided for each of a rear end portion of a preceding coil material and a front end portion of a subsequent coil material. So that it moves in the width direction close to the bottom surface,
It is attached to the reciprocating moving means.

In the plate positioning apparatus according to a second aspect of the present invention, the detection sensor of the plate width end detecting means is a proximity switch.

In the plate positioning apparatus according to a third aspect of the present invention, the detection sensor of the plate width end detecting means is a reflection type photoelectric sensor.

According to a fourth aspect of the present invention, there is provided an apparatus for positioning a plate material, wherein a pad of a clamp device for clamping a coil material opposed to a detection sensor is formed of a non-magnetic material.

In the plate positioning apparatus according to a fifth aspect of the present invention, the pad of the clamping device for clamping the end of the coil material facing the detection sensor is made of copper or a copper alloy.

[0013] In a plate material positioning apparatus according to a sixth aspect of the present invention, the pad of the clamp device for clamping the end of the coil material facing the detection sensor is formed of an insulating member.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, embodiments of the present invention will be described. FIG. 1 shows Embodiment 1 of the present invention. FIG. 4 is a partial configuration diagram showing a configuration of a portion that clamps and cuts an end portion of the preceding coil material. In the figure, reference numeral 21 denotes a preceding coil material, 23 denotes a preceding coil clamping device for clamping the preceding coil material 21, which is constituted by an upper portion 23a and a lower portion 23b.
Is a pad attached to the pressing surface of the preceding coil material 21 side of the preceding coil clamping device 23, and 25 is a cutting means for cutting the rear end portion of the preceding coil material 21 and has a configuration in which an upper portion 25a and a lower portion 25b are engaged. Reference numeral 20 denotes a detection sensor for detecting the width end of the preceding coil. The portion for clamping the subsequent coil has the same configuration. The other parts of the plate alignment device have the same configuration as the conventional plate alignment device shown in FIG. 3 and will not be described.

The cutting means 25 cuts the rear end by reciprocating at right angles in a state where the preceding coil 21 is clamped by the preceding coil clamping device 23. The detection sensor 20 for detecting the width end of the preceding coil material 21 is mounted below the upper portion 23 a of the preceding coil clamping device 23 and behind the cutting device 25 so as to face the lower surface of the preceding coil material 21. Even if the detection sensor 20 is arranged at the lower part in front of the cutting device 25, there is no particular problem in detecting the width end of the plate, and the detection sensor 20 is not limited to the front. Regarding the tip of the subsequent coil material,
It has the same configuration as that of the preceding coil material 21 and is arranged to face the preceding coil material portion. A drive control mechanism is provided for driving one of the preceding coil material side and the subsequent coil material side of the clamp device so that the center of each coil material is aligned. In this example, the preceding coil material is moved in the width direction.

Next, the operation will be described. When the leading coil material 21 and the succeeding coil are sent to a predetermined position and clamped, the cutting device reciprocates in the direction traversing the coil material as in the conventional example. , Detects the width end of both sides of the subsequent coil material,
The position of the width end of the plate is detected from the moving distance of the cutting device 25, and is input to the arithmetic unit 9 to be driven and controlled so that the center positions of the preceding coil and the succeeding coil are aligned.

As described above, since the detection sensor 20 for detecting the width end of the plate material is disposed so as to face the lower surface of the clamped coil material in the portion L in FIG. It is no longer related to the upper surface, and even if spatters for welding or burrs at the time of cutting adhere to the position of the width end of the side surface of the preceding coil material clamping device 3 or the succeeding coil clamping device 4 as in the conventional example, It has no relation to the detection of the width edge, and the width edge of the plate can be accurately detected.

[0018]

【Example】

Embodiment 1 FIG. Embodiment 1 above. As a detection sensor for detecting the width end of the coil material attached to the lower surface of the coil material, a proximity switch that operates when the conductive material approaches is used. FIG. 2 shows the relationship between the length of one side of the detection object for each material of the material to be detected of the proximity switch and the detection distance between the material to be detected by the detection sensor. As can be seen from FIG. 2, detection can be performed even when the detection distance is long with a magnetic material such as iron, but the detection distance is short with a non-magnetic material such as copper, brass, and aluminum. Usually, the coil material is an iron material, and the arrangement distance from the lower surface of the coil material may be set to 9 mm or less, and D in FIG. 1 is actually set to 4 to 9 mm.

Embodiment 2 FIG. A reflection type photoelectric sensor can be used as a detection sensor for detecting the width end of the plate from one side.
In this case, the reflected light reflected on the surface of the coil material is received and detected, so that it is necessary to set in consideration of the reflectance of the surface of the coil material.

Embodiment 3 FIG. A pad is attached to the pressing surface of the coil material of the clamp device.To prevent this pad material from significantly affecting the detection sensitivity of the proximity switch, use a non-magnetic material such as copper or copper alloy. It is effective to do. In addition, since the coil material is cut off at the end, the rear end of the preceding coil and the front end of the subsequent coil are connected by welding, so it is necessary to apply a welding current. Alternatively, a copper alloy is suitable. If the material of the pad is made of copper or a copper alloy, the influence on the detection sensitivity of the proximity switch is small, and the current of the welding current is also improved.

Embodiment 4 FIG. It is important that the pad of the clamp device does not damage the surface of the coil material, and one pad of the clamp device, for example, the lower part 1 of the clamp device.
The pad attached to the clamp surface in 3b does not need to be conductive, and may be an insulating member. If it is an insulating member,
The detection sensitivity of the proximity switch is not affected at all, and the detection sensitivity of the proximity switch is improved.

[0022]

According to the plate positioning apparatus of the first aspect of the present invention, the detection sensor of the plate width end detecting means is provided near the lower surface of each of the rear end of the preceding coil material and the front end of the subsequent coil material. Since it is attached to the reciprocating movement means of the cutting means so as to move in the width direction, even if there is welding spatter or cutting burrs on the upper part of the clamp device, it does not affect the detection of the width end of the sheet and can be accurately detected.

In the plate positioning apparatus according to a second aspect of the present invention, since the detection sensor of the plate width end detecting means is a proximity switch, it is possible to prevent foreign matter from adhering to the upper part of the clamp device and reflection from the surface of the coil material. It is no longer relevant, and the width end of the coil material can be accurately detected.

In the plate positioning apparatus according to a third aspect of the present invention, since the detection sensor of the plate width end detecting means is a reflection type photoelectric sensor, regardless of the adhesion of foreign matter on the upper part of the clamp device, the coil material can be removed. The width edge can be accurately detected.

In the plate positioning apparatus according to a fourth aspect of the present invention, since the pad of the clamp device for clamping the coil material opposed to the detection sensor is made of a non-magnetic material, the influence on the detection sensitivity of the proximity switch is small. Become.

In the plate positioning apparatus according to a fifth aspect of the present invention, since the pad of the clamp device for clamping the end of the coil material facing the detection sensor is made of copper or a copper alloy, the detection sensitivity of the proximity switch is determined. And the conductivity of the welding current is improved.

In the plate positioning apparatus according to claim 6 of the present invention, since the pad of the clamping device for clamping the plate facing the detection sensor is formed of an insulating member, it does not affect the detection sensitivity of the proximity switch at all. The detection sensitivity of the proximity switch is improved.

[Brief description of the drawings]

FIG. 1 is a first embodiment. FIG. 4 is a partial configuration diagram showing a configuration of a portion that clamps and cuts an end portion of the preceding coil material.

FIG. 2 is a characteristic diagram showing a relationship of a detection distance for each material of a proximity switch.

FIG. 3 is a configuration diagram of a conventional plate alignment device.

FIG. 4 is a diagram illustrating a relative relationship between a fixed-side clamp device and a roller shear device of FIG. 3;

FIG. 5 is a diagram showing a positional relationship between a light source and a detection unit of a conventional photoelectric detector.

FIG. 6 is a diagram showing the state of adhesion of welding spatter or burrs on a side surface of a conventional clamping device.

[Explanation of symbols]

Reference Signs List 20 detection sensor, 21 preceding coil, 23 preceding coil material clamping device, 25 cutting device, D detection sensor separation distance, L gap of lower surface of coil material.

Claims (6)

[Claims] A rear end portion of a preceding coil material of the thin coil material;
Clamping device for fixing the leading end of the succeeding coil material, cutting means for cutting the trailing end of the preceding coil material and the leading end of the succeeding coil material, reciprocating means for reciprocating the cutting means in the width direction, and reciprocating Fixed to the means of transportation,
Sheet width end detecting means for detecting the sheet width end of the preceding coil material and the succeeding coil material, and a center position for matching both centers of the sheet width end positions of the preceding coil material and the succeeding coil material detected by the sheet width end detecting means. An alignment mechanism, and a center alignment mechanism control means for driving and controlling the center alignment mechanism based on the width data of the preceding coil and the succeeding coil detected by the width edge detection means. The edge detection means is
A plate member, which is attached to the reciprocating movement means so as to move the detection sensor in the width direction in the vicinity of the lower surface of each of the rear end portion of the preceding coil material and the front end portion of the subsequent coil material. Positioning device. 2. The apparatus according to claim 1, wherein the detection sensor of the width detecting means is a proximity switch. 3. The apparatus according to claim 1, wherein the detection sensor of the width end detecting means is a reflection type photoelectric sensor. 4. The apparatus according to claim 1, wherein a pad of the clamp device for clamping the plate material facing the detection sensor is made of a non-magnetic material. . 5. The positioning of a plate according to claim 1, wherein a pad of a clamping device for clamping the plate facing the detection sensor is made of copper or a copper alloy. apparatus. 6. The apparatus according to claim 1, wherein a pad of the clamp device for clamping the plate material facing the detection sensor is formed of an insulating member.