JPH10263700A - Coil tongue having coil top end positioning function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the time of coil handling, to automatize the coil top end positioning and to save the labor of line inlet working. SOLUTION: Right and left coil supporting arms 22, 23 are attached freely spreading or retracting of an interval between the arms on a horizontal beam 15 hung with an overhead traveling crane, driving rolls 36, 37 inserted to both end opening parts 12, 13 of a coil 14 are attached on the top parts of the right and left coil supporting arms 22, 23, pressing rolls 55 to 58 and coil top end detectors 59 to 62 are attached to the top parts of pressing roll advancing and retreating cylinders 49 to 52 attached to the horizontal beam 15, based on the output of the coil top end detectors 59 to 62, the number of rotation of the driving rolls 36, 37 is controlled and the coil top end is stopped at a prescribed rotation position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil tong used for transporting a coil in a suspended state in various manufacturing processes for handling the coil.

[0002]

2. Description of the Related Art A typical tapping method at the entrance (coil feeder line) of various manufacturing process lines for handling coils such as cold rolled steel sheets, hot rolled steel sheets, and plated steel sheets is shown in FIG.
Referring to FIG. 4, first, the coil 71 placed on the coil skid 70 is transferred onto the cradle roll 73 by the coil car 72, and the cradle roll 73 is rotated so that the tip position of the coil 71 is changed. Is positioned, the coil binding band 75 is cut manually or by the band processing device 74. Then, after the coil 71 is mounted on the pay-off reel 76 by the coil car 72, the coil end 71 a of the coil 71 is sucked by the magnet conveyor 77 and is bitten by the pinch roll 77 a.

In the above-mentioned tapping method, the cradle roll 73 is rotated to rotate the coil 71 and the coil 7 is rotated.
The position of the tip of the coil 1 is determined by the coil 71
When the coil binding band 75 is cut in a state where the tip of the coil 71 is located above the coil 71, the strip shifts down due to its own weight or rigidity of the strip constituting the coil 71, and the coil 71 is moved by the coil car 72 to the payoff reel 76. This is because the tip that has slipped off is caught by the peripheral device when it is mounted on the device, which hinders automatic mounting.

Conventionally, several proposals have been made with respect to such a coil tip positioning method. For example, JP-A-57-25229, JP-A-5-13609, and JP-A-7-32039. Some are presented in With reference to FIG. 5, a method of positioning the coil tip described in Japanese Patent Laid-Open No. 7-32039 will be described below.

First, a coil tip positioning device B used in this coil tip positioning method will be described.
Cradle roll 78 rotatably supporting coil 83
A swing arm 79 having a center of rotation parallel to the axial direction of the cradle roll 78 is mounted on the roll support base 78a to which is mounted. At the tip of the swing arm 79, a coil tip detector 81 is mounted together with a straightening roll 80. The base of the swing arm 79 is pivotally connected to a fluid pressure cylinder 82 that can swing the swing arm 79 up and down. Have been.

Next, the above-mentioned coil tip positioning device B
When the coil tip is rotated by the cradle roll 78 in the clockwise direction, the coil tip detector 81 detects the step of the coil tip 84, and when the coil tip 84 bites into the cradle roll 78, The cradle roll 78 is stopped, and the coil tip 84 is positioned.
Further, in various manufacturing process lines for handling coils such as the above-mentioned cold rolled steel sheets, hot rolled steel sheets, and plated steel sheets, a coil tong used for transporting a coil formed by winding a thick strip is used as a coil tong. -1166
There is a coil tong C described in JP-A-81.

As shown in FIGS. 6 to 8, this coil tongue C is mounted on a vertically lifted frame 90 such that a lifting block 91 moves up and down.
A claw 94 for holding the coil 93 via a link mechanism 92 is opened and closed on both sides while adjusting the holding interval by the vertical movement of the lifting block 91. Also, the coil 9
A rotating body 97 that rotatably supports the coil 93 is rotatably attached to the tips of the claws 94 of both legs 96 inserted into the inner diameter portion 95 of the third. Further, a pressing roll 98 for pressing the outer peripheral surface of the coil 93 from above is attached to the frame 90 so as to be vertically movable.

With the above configuration, the posture of the coil 93 is freely adjusted so that the coil tip portion 99 does not hang down by rotating the coil 93 in the circumferential direction while the coil 93 is sandwiched. it can. Also,
When the coil 93 is transported or placed on the mounting table, the coil tip 99
Since the hanging of the coil 93 is eliminated, the coil 93 can be transported while being wound up, so that a coil band required for preventing the coil tip portion 99 from hanging and a banding machine for binding are unnecessary. Since the binding step and equipment costs required for the above can be omitted, the cost can be reduced.

[0009]

However, the above-mentioned conventional coil tip positioning device B and coil tongue C still have the following problems to be solved. That is, in the coil tip positioning device B, the coil 83 composed of a thin strip of about 0.3 mm or less is
When the cradle roll 78 is rotated by rotating the cradle roll 78 due to the weight of the strip, the outer peripheral surface of the coil 83 is squeezed, that is, wrinkles are generated, and the shape is defective. Not only that, it also hinders automation of coil handling at the entry side of the line.

On the other hand, the coil tongs C are used exclusively in the coil 93 made of a thick strip to eliminate the need for banding and use of a banding machine. The coarse adjustment is sufficient because the adjustment is performed by rotating the coil on the cradle roll. Therefore, it is indispensable to prevent wrinkles generated when the thin coil having a thickness of about 0.3 mm or less is rotated on the cradle roll. No consideration has been given to automating the coil tip positioning work for accurate coil tip positioning.

The present invention has been made in view of such circumstances, and has a coil tip positioning function capable of shortening the coil handling time, automating the coil tip positioning, and saving labor in line entrance work. It is intended to provide coil tongs.

[0012]

According to the present invention, there is provided a semiconductor device comprising:
The coil tongue having the coil tip positioning function described in the above, the center portion of the horizontal beam is hung by a crane or the like, and the left and right coil support arms movable symmetrically in the horizontal beam from the center portion of the horizontal beam to the horizontal beam The left and right coil support arms have their tips extended downward and parallel to each other, and a drive roll that can be inserted into the openings at both ends of the coil so as to be able to advance and retreat inside the tips. A press roll attached to the horizontal beam, a base of a press roll advance / retract cylinder connected to the horizontal beam, and a press roll contacted on an outer peripheral surface of the coil at a leading end of the press roll advance / retract cylinder; A coil tip detector for detecting the rotation of the drive roll is controlled based on an output signal of the coil tip detector to rotate the coil tip by a predetermined amount. It is set to be stopped at the location.

According to a second aspect of the present invention, there is provided a coil tongue having a coil tip positioning function according to the first aspect of the present invention, wherein the pressing roll advance / retreat cylinders are respectively symmetrically arranged on the front and rear sides of the center of the horizontal beam. The pressing roll, which is mounted in an inclined state and is mounted at the tip of each of the pressing roll reciprocating cylinders, abuts on the front and rear portions of the upper outer peripheral surface of the coil in a substantially normal direction. A coil tongue having a coil tip positioning function according to a third aspect is the coil tong having a coil tip positioning function according to the second aspect, wherein the coil tip detector is attached to a tip portion of each of the pressing roll advance / retreat cylinders.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

First, a coil tongue A having a coil tip positioning function according to an embodiment of the present invention will be described with reference to FIGS. As shown in the figure, a coil skid 11 having a concave mounting surface 10 at the center on the floor is provided, and openings 12 and 13 are formed on the concave mounting surface 10 of the coil skid 11 at both ends in the left-right direction. Is mounted.

A coil tongue A having a coil tip positioning function is used for suspending and transporting the coil 14 described above, and is located above the coil 14 in FIGS. That is, a horizontal beam 15 made of H-shaped steel is disposed above the coil 14, and suspension brackets 16 and 17 are attached to the upper surface of the central portion of the horizontal beam 15. A suspension shaft 19 that is engaged with a suspension hook 18 of the overhead crane is provided between the suspension brackets 16 and 17.

Left and right sliding blocks 20 and 21 are mounted on the horizontal beam 15 so as to be symmetrically movable in the left-right direction from the center of the horizontal beam 15. The left and right coil support arms 22, each of which has a tip extending in parallel downward, are provided below the left and right sliding blocks 20, 21, respectively.
23 bases are mounted. Therefore, the left and right coil support arms 22 and 23 are connected to the left and right sliding blocks 20 and 2, respectively.
1 is moved in the left-right direction integrally.

Various mechanisms can be considered as a mechanism for moving the left and right sliding blocks 20 and 21 in the left-right direction. In the present embodiment, the mechanism extends along the lower surface of the horizontal beam 15 over substantially the entire length of the horizontal beam 15. A screw shaft 24 of a length is arranged, and left and right ends and a central portion of the screw shaft 24 are respectively mounted on bearings 25 to 25.
27, the left and right male screw portions 28, 29, which are rotatably supported and reverse-threaded, are mounted on the left and right coil support arms 22, 2, respectively.
3 is screwed into left and right female screw holes 30 and 31 provided at the upper part of the shaft 3 and a sprocket 32 is attached to the left end of the screw shaft 24. The sprocket 32 is attached to the left end of the horizontal beam 15 by an endless chain 33. Sprocket 35 fixed to the output shaft of rotary motor 34 mounted on the upper surface
It is constituted by interlocking connection.

The left and right coil support arms 22, 23
The drive rolls 36 and 37 are attached to the inside of the forward end extending downward, respectively, and these drive rolls 36 and 37 are similarly attached to the left and right coil support arms 22 and 23. Rotating motor 38 attached to the part,
The rotation is driven by 39. The rotation motor 38,
The power transmission from 39 to the drive rolls 36, 37 is performed by sprockets 40 attached to the rotary motors 38, 39,
The sprockets 41 and sprockets 44 and 45 mounted on the mounting shafts 42 and 43 of the driving rolls 36 and 37 are connected by endless chains 46 and 47 in an interlocking manner.

At the center of the horizontal beam 15, a coil pressing mechanism 48 having the following structure is integrally mounted. That is, a pair of pressing roll advance / retreat cylinders 49, 50 and 51, 52 are mounted symmetrically in an inclined state along the front and rear side walls of the central portion of the horizontal beam 15. That is, as shown in FIG.
The bases of the coils 0, 51, and 52 are separated from the axis XX of the horizontal beam 15, and the front ends thereof extend substantially in the normal direction to the front and rear portions of the upper surface of the coil 14. Both ends of the pressing roll mounting shafts 53 and 54 are fixedly connected between the leading ends of the pressing roll advance / retreat cylinders 49, 50 and 51 and 52. Press rolls 55, 56 and 57, 58 are rotatably mounted on the left and right ends of the press roll mounting shafts 53, 54, respectively. Therefore, the pressing rolls 55, 56
And 57, 58 also contact the front and rear portions of the upper surface of the coil 14 in a substantially normal direction. Further, a pair of coil tip detectors 59, 60 and 61, 62 which are spaced apart in the axial direction are attached to the center of the pressing roll attachment shafts 53, 54. Reference numerals 60, 61, and 62 extend substantially in the normal direction to the front and rear portions of the upper surface of the coil 14.

Coil tip detectors 59, 60 and 61, 6
As 2, various types of sensors can be used, and for example, a magnetic sensor such as an eddy current sensor is preferably used. Since such a sensor is a non-contact type, it can prevent damage due to careless contact with the coil tip 63, and
This is because the coil tip 63 can be reliably detected by utilizing the change in magnetism.

The control device in the coil tongs A having the coil tip positioning function described above will be described.
The coil tip detectors 59, 60 and 61, 62 are connected to an input port of a control device (not shown), and the output port of the control device is provided with a rotation motor 38 for rotating the driving rolls 36, 37 described above. 39 and the like.

Next, the operation of the coil tongue A having the coil tip positioning function having the above-described configuration will be described. Above the coil 14 placed on the coil skid 11, a coil tongue A having a coil tip positioning function suspended by a suspension hook 18 of an overhead crane is brought. By driving the rotation motor 34, the left and right coil support arms 2
2 and 23 are horizontally moved symmetrically, and the drive rolls 36 and 37 attached to the front ends of the left and right coil support arms 22 and 23 are moved a sufficient distance into the openings 12 and 13 at both ends of the coil 14. insert. Thereafter, the suspension hook 18 is hoisted by an overhead crane, and the coil 14 is hoisted.

The pressing roll reciprocating cylinders 49 to 52 are operated to press the pressing rolls 55 to 58 against the outer surface of the coil 14. The rotation motors 38 and 39 are operated to rotate the coil 14. The coil tip 63 is detected by the coil tip detector 59, 60 or 61, 62, and its output signal is sent to the control device.
The number of rotations 8 and 39 and the number of rotations of the drive rolls 36 and 37 linked to the rotation motors 38 and 39 are controlled, and the coil end 63 is stopped at an arbitrary position.

As described above, in the present embodiment, the bases of the left and right coil support arms 22 and 23 are movably attached to the horizontal beam 15 suspended and supported by the overhead crane symmetrically, and the left and right coil supports are supported. Drive rolls 36, 3 which can be inserted into the openings 12, 13 at both ends of the coil 14 so as to be able to advance and retreat at the ends extending parallel to the lower sides of the arms 22, 23.
7 are respectively attached, and the pressing rolls 55 to 58 abut on the outer peripheral surface of the coil 14 at the leading ends of the pressing roll reciprocating cylinders 49 to 52 mounted on the horizontal beam 15.
And coil tip detectors 59 to 62 for detecting the coil tip 63 are attached.
, The number of rotations of the drive rolls 36 and 37 is controlled based on the output signal, so that the coil tip 63 can be stopped at a predetermined rotation position.

As described above, since the coil tip positioning is automatically performed while the coil 14 is being conveyed by the coil tongue A having the coil tip positioning function, the tip positioning work on the coil skid 11 becomes unnecessary, and the line entrance is not required. Coil handling time can be reduced. Further, even in the case of the coil 14 formed of a thin strip having a thickness of about 0.3 mm or less, the coil tip 63 can be positioned without squeezing the outer peripheral surface of the coil 14, that is, without causing a shape defect such as wrinkles. Since it is possible to perform the operation, the coil tip positioning operation can be fully automated, and the labor on the line entry side can be saved.

In the present embodiment, the pressing roll advance / retract cylinders 49, 50 and 51, 52 are mounted on the front and rear sides of the center of the horizontal beam 15 in a symmetrically inclined state, respectively. And 51, 5
The pressing rolls 55, 56 and 57, 58 attached to the front end of the coil 2 abut the front and rear portions of the upper outer peripheral surface of the coil 14 in a substantially normal direction. Therefore, when the coil 14 is simply supported by the coil tongs A, the coil tongs A are moved to the free support state even when the coil tongs A are moved horizontally when the horizontal movement is started for transportation after the coil 14 is suspended and supported by the overhead crane. Certain coil 14 tries to stop at a rest position due to inertia, and thus coil 14 is unstablely oscillated.
Press rolls 55, 56 and 5
Since the pressure is applied by the pressures 7 and 58, the coil 14 can be moved to a stable state together with the coil tongs A while suppressing the swing of the coil 14. Similarly, when the conveyance of the coil 14 is stopped, the coil 14 can be stopped in a stable state together with the coil tongue A while suppressing the swing of the coil 14.

Further, in the present embodiment, the coil tip detector is attached to the tip of each pressing roll advance / retreat cylinder. Accordingly, when the coil 14 is placed on the coil skid 11 in the form shown in FIG. 2, the coil 14 is rotated clockwise a to rotate the coil tip detector 5.
9 and 60, the coil tip 63 can be detected, and the coil 1 is mounted in the mounting mode reverse to the mounting mode shown in FIG.
When the coil 4 is mounted on the coil skid 11, the coil 14 is rotated in the counterclockwise direction b so that the coil tip detector 6
1, 62. Therefore, regardless of the installation form of the coil 14 on the coil skid 11, the coil tip 63 of the coil 14 can be easily and accurately detected.

As described above, the present invention has been described with reference to one embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and is described in the claims. It also includes other embodiments and modifications that can be considered within the scope of the matters described.

[0030]

In the coil tongue having the coil tip positioning function according to the first to third aspects, the bases of the left and right coil supporting arms are movably mounted on the horizontal beam suspended and supported by the overhead crane, symmetrically. Drive rolls that can be inserted into the openings at both ends of the coil so that they can be inserted into the openings at both ends of the coil extend parallel to the lower side of the left and right coil support arms. At the tip of the coil, a pressing roll that abuts on the outer peripheral surface of the coil and a coil tip detector for detecting the coil tip are mounted, and the number of rotations of the drive roll is controlled based on the output signal of the coil tip detector In addition, the coil tip can be stopped at a predetermined rotation position.

As described above, since the positioning of the coil tip is automatically performed while the coil is being conveyed, the task of positioning the tip on the coil skid becomes unnecessary, and the coil handling time at the line entrance can be reduced. In addition, the plate thickness is about 0,0.
Even in the case of a coil made of a thin strip of 3 mm or less, the coil tip can be positioned without squeezing the outer peripheral surface of the coil, that is, without causing a shape defect such as wrinkles. Full automation can be achieved, and labor on the line entry side can be saved.

In the coil tongue having the coil tip positioning function according to the second aspect, the pressing roll advance / retreat cylinders are respectively symmetrically attached to the front and rear sides of the center of the horizontal beam, and the pressing roll advance / retreat cylinders are provided at the tip of each pressing roll advance / retreat cylinder. The pressing roll attached to the portion abuts on the front and rear portions of the upper outer peripheral surface of the coil in a substantially normal direction. Therefore, when the coil is simply supported by the coil tongs, when the horizontal movement for transportation is started after the coil is suspended by the overhead crane, the coil in the freely supported state is inertial even if the coil tong is moved horizontally. In order to stop at the stationary position, the coil is unstablely shaken, but in the present invention, since the front and rear portions of the upper outer peripheral surface of the coil are pressed by the pressing roll, the coil is suppressed from swinging. It can move to a stable state together with the coil tongs. Similarly, when stopping the conveyance of the coil, the coil can be stopped in a stable state together with the coil tongue while suppressing the swing of the coil.

Further, in the coil tongue having the coil tip positioning function according to the third aspect, the coil tip detector is attached to the tip of each pressing roll advance / retreat cylinder. Therefore, regardless of the installation form of the coil on the coil skid, the coil tip of the coil can be easily and accurately detected.

[Brief description of the drawings]

FIG. 1 is a front view of a coil tongue having a coil tip positioning function according to an embodiment of the present invention.

FIG. 2 is a side view taken along line II of FIG. 1;

FIG. 3 is an explanatory diagram of a layout of a coil feeder line.

FIG. 4 is an explanatory diagram of the main part.

FIG. 5 is an explanatory diagram of a main part structure of a conventional coil tip positioning device in a coil feeder line.

FIG. 6 is a front view of a conventional coil tongue.

FIG. 7 is a side view of the same.

FIG. 8 is an explanatory diagram of the same use state.

[Explanation of symbols]

A Coil tongue having coil tip positioning function 10 Concave mounting surface 11 Coil skid 12 Opening 13 Opening 14 Coil 15 Horizontal beam 16 Suspension bracket 17 Suspension bracket 18 Suspension hook 19 Suspension shaft 20 Sliding left Block 21 Right sliding block 22 Left coil support arm 23 Right coil support arm 24 Screw shaft 25 Bearing 26 Bearing 27 Bearing 28 Left male screw part 29 Right male screw part 30 Left female screw hole 31 Right female screw hole 32 Sprocket 33 Endless chain 34 rotation motor 35 sprocket 36 drive roll 37 drive roll 38 rotation motor 39 rotation motor 40 sprocket 41 sprocket 42 mounting shaft 43 mounting shaft 44 sprocket 45 sprocket 46 endless chain 47 endless chain 48 coil pressing mechanism 49 pressing low Reciprocating cylinder 50 Pressing roll reciprocating cylinder 51 Pressing roll reciprocating cylinder 52 Pressing roll reciprocating cylinder 53 Pressing roll mounting shaft 54 Pressing roll mounting shaft 55 Pressing roll 56 Pressing roll 57 Pressing roll 58 Pressing roll 59 Coil tip detector 60 Coil tip detector 61 Coil tip detector 62 Coil tip detector 63 Coil tip

Claims (3)

[Claims] 1. A center portion of a horizontal beam is suspended by a crane or the like, and a base portion of a left and right coil support arm that is symmetrically movable in the left-right direction from the center portion of the horizontal beam is attached to the horizontal beam. The left and right coil support arms have tips extending in parallel downward, and drive rolls that can be inserted into the openings at both ends of the coil so as to be able to advance and retreat are mounted inside the tips, respectively, and A base of a pressing roll advance / retract cylinder is connected to the horizontal beam, and a pressing roll abutting on the outer peripheral surface of the coil at a tip of the pressing roll advance / retract cylinder, and a coil for detecting a tip of the coil A coil end control means for controlling the number of rotations of the drive roll based on an output signal of the coil end detector so that the coil end can be stopped at a predetermined rotational position; Coil tongs with a tip positioning function. 2. The pressing roll advance / retreat cylinder is mounted symmetrically on the front and rear sides of the center portion of the horizontal beam, respectively, and the pressing roll mounted on the tip of each of the pressing roll advance / retract cylinders includes the coil. 2. A coil tongue having a coil tip positioning function according to claim 1, wherein the front and rear portions of the upper outer peripheral surface of the coil tongue are contacted in a substantially normal direction. 3. A coil tongue having a coil tip positioning function according to claim 2, wherein said coil tip detector is attached to a tip of each of said pressing roll advance / retreat cylinders.