JPH08175513A - Internal packing paper-fitting method and device for metal coil - Google Patents

Abstract

PURPOSE: To provide an internal packing paper-fitting method and device for a metal coil, which can easily follow the change of a coil inner diameter, and in addition, can absorb the slip even when an internal packaging paper is inserted in the coil while slightly deviating from the center of the coil, and can fit the internal packaging paper to be correctly joined to the coil inner diameter. CONSTITUTION: An internal packaging paper 7 is cylindrically wound on segments 52A-E being equipped with an expanding means in such a manner that a core 5 on which internal packaging paper leading end side suction headers 54 and internal packaging paper rear end side suction headers 55 are arranged is contracted, and the core 5 is rotated by approx. one rotation while a specified length of the internal packaging paper 7 is being drawn by the suction headers 54, 55. The core 5 is inserted in the inner diameter hole of a coil, and the internal packaging paper rear end side suction headers 55 are released, and at the same time, the segments of the core 5 are primarily expanded to make the rear end side of the internal packaging paper 7 join the inner peripheral surface of the coil. Then, the segments of the core 5 are secondarily expanded to press-bond the internal packaging paper 7 to the inner peripheral surface of the coil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for mounting a metal coil (also simply referred to as a coil) on an inner peripheral sheet.

[0002]

2. Description of the Related Art A metal coil formed by winding a strip rolled by a rolling mill into a cylindrical shape has an inner circumference of the coil covered with an inner circumference paper, and a wrapping paper around the outer circumference of the coil. Covering is done. Conventionally, the mounting of the wrapping paper on the inner peripheral surface of the coil is all manual work, and the operator leans into the coil inner diameter hole to perform half-body work, and fatigue is great, and great care must be taken to prevent danger. There wasn't.

On the other hand, in recent years, a method and an apparatus for automatically mounting an inner peripheral sheet of a metal coil have been proposed. For example, in JP-A-60-204414, a mandrel having small holes on its peripheral surface is held in a reduced pressure state, and a wrapping paper cut in advance to a predetermined length is wrapped around the mandrel and has an overlapping portion. After forming the inner cylinder paper, inserting the mandrel into the coil inner diameter hole and switching the mandrel to positive pressure to bring the inner cylinder paper on the mandrel into close contact with the wall surface of the coil inner diameter hole, then pulling out the mandrel and sealing the overlapping part. There has been proposed a method and an apparatus for mounting an inner peripheral sheet of a metal coil, which is pressure-bonded and heated by a roll for bonding.

Further, in Japanese Patent Laid-Open No. 60-204415, a cylindrical hollow mandrel is formed by incorporating a suction header and arranging a plurality of segments each having a small hole provided on the outer periphery for communicating with the suction header. Then, the base is fixed to the main shaft of the mandrel core, and the rotating teeth are loosely fitted concentrically with the base, and both ends of each segment are pivotally supported by the rotating plate and the base, and the rotating plate is rotated. An inner peripheral paper mounting device for a metal coil has been proposed in which the mandrel is expanded and reduced in diameter by moving each segment in conjunction with each other by moving the segments.

In this case, the inner peripheral paper is wound around the mandrel set to the inner diameter of the coil with the ends of the paper superposed on each other, and the superposed portion is heated and adhered by a seal roll. In this way, the cylindrical inner peripheral paper formed on the mandrel,
The mandrel is reduced in diameter by rotating the turntable while adsorbing the suction header to each segment. The reduced diameter mandrel is inserted into the inner diameter hole of the coil, and the turntable is turned to the original position to match the mandrel outer diameter with the coil inner diameter. The inner paper on the mandrel is simultaneously opened. Then, the suction header is returned to normal pressure, and the mandrel is reduced in diameter and pulled out from the inner diameter hole to mount the inner peripheral paper.

[0006]

However, the conventional inner coil paper mounting device for a metal coil proposed in Japanese Patent Laid-Open No. 60-204414 has a mandrel wound with inner paper inserted into the inner diameter hole of the coil. Since the inner cylinder paper on the mandrel is brought into close contact with the inner wall surface of the coil inner diameter by the pressure air blown from the peripheral surface of the mandrel, the outer diameter of the mandrel should not be too small according to the inner diameter of the target coil. It needs to be formed.

However, in general, the inner diameter of the metal coil is not one kind. For example, inner diameter 406mm, 508mm, 6
There are many types such as 10 mm, and when targeting a plurality of these types, there is a problem in that one mandrel cannot suffice and it is necessary to prepare mandrels of various sizes corresponding to the inner diameter size of the coil. On the other hand, in the case of the conventional metal coil inner peripheral paper mounting apparatus proposed in Japanese Patent Laid-Open No. 60-204415, the outer diameter of the mandrel can be expanded / contracted by displacing each segment, and various coil inner diameter dimensions can be obtained. It is possible to deal with.

However, even if the mandrel itself can be expanded and reduced in diameter, the mandrel diameter is set in advance according to the inner diameter of the coil when it is mounted, and the inner peripheral paper wound around the mandrel is preliminarily set with the overlapped end portions. Since they are bonded, the outer diameters of the mandrel and the inner peripheral paper are fixed at that time. After that, the diameter of the mandrel is once reduced, and the mandrel is inserted into the inner diameter hole of the coil to restore the original outer diameter again.

Therefore, the following various problems occur. First of all, the metal coil products to be packed generally come from not only one specific line but various lines in the packing process, and the dimensions are likely to vary depending on the characteristics of each line. . According to the actual measurement and investigation of the coil inner diameters by the present inventors, for example, when the nominal coil inner diameter is 508 mm, a variation of about 506 mm to 512 mm was recognized. Therefore, the measured coil inner diameter is 506 mm when the mandrel diameter is set according to the nominal coil inner diameter of 508 mm and the inner peripheral paper is wound and adhered.
As described above, when the coil is inserted and expanded with respect to the one smaller than the nominal value, it hits the inner peripheral surface of the coil before it is fully opened and does not open further, and the inner peripheral paper is mounted with wrinkles. On the other hand, if the inner diameter of the measured coil is larger than the nominal value, such as 512 mm, the inner peripheral paper will not reach the inner peripheral surface of the coil even if it is fully opened, and the inner peripheral paper will be completely adhered. Cannot be installed. That is, unless the outer diameter of the mandrel is set by actually measuring the inner diameter of the coil to be packed, it is difficult to attach the inner peripheral paper to the inner peripheral surface of the coil in a good condition. .

Even when the mandrel outer diameter is set to match the coil inner diameter, the mandrel is inserted into the coil inner diameter hole as shown in FIG.
Misalignment X between center O _C of mandrel M and center O _{M of} mandrel M
If there is, the segment 100 of the mandrel M on the side that is biased in the middle of full opening and the inner peripheral paper 7 interfere with the coil inner peripheral surface 1a first and cannot be expanded further. Is attached only loosely to the coil inner peripheral surface 1a. That is, at the time of insertion, there is a problem that it is difficult to uniformly and closely attach the inner peripheral paper in a good condition unless the coil center O _C and the mandrel center O _M are exactly matched.

By the way, in the process after the metal coil is wrapped with paper, an iron corner ring for reinforcement is applied to the corner portion of the inner diameter hole of the coil to tie the steel band with a binding machine, and the export specification is used. The product is wrapped in paper and then covered with an iron plate. These operations are performed manually or by a machine, but in that case, if the inner peripheral paper is not attached in a tightly fitted state which is properly adapted to the inner diameter of the coil, the inner peripheral paper will be torn and there is a problem in terms of rust prevention.

After wrapping and adhering the inner paper,
When the mandrel is once reduced in diameter for insertion into the inner diameter hole of the coil, the inner peripheral paper 7 in the middle of the segments 100 does not necessarily have the gap 10 between the segments 100 as shown in FIG.
It does not always dangle inside 2. That is, it may be possible to bend the protrusions to the outside of the gap 102 between the segments 100, but in that case, there is a problem that the protrusions interfere with the coil inner diameter and it is difficult to insert them smoothly. ..

Further, since the suction header is built in each segment of the mandrel, there is a problem that the structure of the device becomes complicated, such as the piping being complicated. Therefore, the present invention has been made by paying attention to the above-mentioned conventional problems, and can flexibly cope with various kinds of coil inner diameters and can easily follow variations in the coil inner diameter dimension. To provide a method and a device for mounting an inner peripheral paper of a metal coil, which can absorb the deviation even if the peripheral paper insertion is slightly eccentric from the center of the coil, and can mount the inner peripheral paper so as to properly adhere to the inner diameter of the coil. Has an aim.

[0014]

In order to achieve the above object, a first method for mounting an inner peripheral paper on a metal coil according to the present invention comprises a suction header on the front end of the inner peripheral paper in a plurality of radially expandable / retractable divided segments. Also, the core metal with the suction header on the rear end side of the inner peripheral paper is reduced in diameter, and the core metal is rotated one extra cycle while adsorbing the inner peripheral paper of a specified length with each suction header, and the inner peripheral paper is in a reduced diameter state. It is wound around the outer circumference of the segment and held in a cylindrical shape. Then, the mandrel is inserted into the inner diameter hole of the coil to open the suction header on the rear end side of the inner peripheral paper, and the segment of the mandrel is primary-diametered so that the rear end side of the inner peripheral paper runs along the inner peripheral surface of the coil. After that, the segment of the mandrel is secondarily expanded in diameter and the inner peripheral paper is pressed against the inner peripheral surface of the coil.

Further, according to the second method of mounting the inner circumference paper of the metal coil of the present invention, the inner circumference paper front end side suction header and the inner circumference paper rear end side suction header are provided in a plurality of radially expandable / contractible divided segments. Cylindrical shape by reducing the diameter of the arranged core metal, adsorbing the inner peripheral paper of a predetermined length with each suction header and rotating the core metal one extra turn to wind the inner peripheral paper around the outer periphery of the segment in the reduced diameter state. Hold on. Then, the mandrel is inserted into the inner diameter hole of the coil to open the suction header on the rear end side of the inner peripheral paper, and the segment of the mandrel is primary-diametered so that the rear end side of the inner peripheral paper runs along the inner peripheral surface of the coil.
Then, the mandrel having the primary diameter expanded is slightly reversely rotated in the anti-winding direction (rewinding direction) so that the leading end side of the inner peripheral paper is along the inner peripheral surface of the coil. After that, the segment of the mandrel is secondarily expanded in diameter and the inner peripheral paper is pressed against the inner peripheral surface of the coil.

In each of the above-mentioned mounting methods, when the core metal wound with the inner peripheral paper is inserted into the inner diameter hole of the coil, the suction header of the inner peripheral paper front side is positioned substantially horizontally and It is possible to improve the adhesiveness of the wrapper to the inner circumferential surface of the coil. Also, wrap the inner circumference paper of the mandrel with the suction header side of the inner circumference paper tip side of the segment retracted in the inner diameter direction,
Insert the coil into the inner diameter hole, perform the primary diameter expansion of the segment, and the secondary diameter expansion of the segment, and then press the suction header side of the inner peripheral paper tip side of the segment retracted in the inner diameter direction to the outer diameter direction. Thus, the adhesion of the inner peripheral sheet to the inner peripheral surface of the coil can be further improved.

The metal coil inner peripheral paper mounting device of the present invention is mounted by inserting the inner peripheral paper, which is cut into a predetermined length in advance and has the tip end thereof coated with the adhesive, into the coil inner diameter hole. In the paper mounting device for the inner circumference of the metal coil, a plurality of segments, each of which is expandable / contractible in the radial direction via the expanding / contracting means, are arranged in a substantially cylindrical shape around the rotating cylindrical shaft and the inner circumference of one segment is arranged. The paper leading end side suction header is provided with a cored bar provided with an inner peripheral paper trailing end side suction header in the other segment adjacent thereto.

The expansion / contraction means of the segment is provided with a screw shaft rotatably inserted in the rotary cylindrical shaft and an externally long opening in the axial direction provided in the rotary cylindrical shaft and screwed to the screw shaft. And a first link that has one end rotatably supported on the nut and the other end rotatably supported on the rear surface of the segment.
And a link mechanism having a second link whose one end is axially supported by the link and whose other end is axially supported by the rotating cylindrical shaft.

Further, one end of the first link of the expansion / contraction means is axially supported by a sliding body which is formed so as to be movable in the axial direction independently of the nut, and is expanded / contracted in the axial direction between the sliding body and the nut. A possible spring may be interposed. In addition, a segment having a suction header on the leading edge side of the inner peripheral paper has a pressing device that bends the end portion having the header inward toward the core metal and presses the inwardly curved portion to expand the core metal outward. It may be provided on the back surface side of the segment.

Further, it is possible to provide a gripper at the insertion side end of the segment to hold the winding shape with the overlapping portion of the inner peripheral paper sandwiched therebetween. Furthermore, a collision detection sensor for detecting a collision with the coil may be provided at the end of the segment on the insertion side.

[0021]

According to the first method of mounting the inner circumference paper of the metal coil of the present invention, the inner circumference paper in which the segment of the mandrel is reduced in diameter to be smaller than the inner diameter hole of the coil and is wound around the outer circumference by one round plus α,
Initially, without adhering, suction with a suction header and insert while holding in a cylindrical shape. Then, the suction of the suction header on the rear end side of the inner peripheral sheet is released, and the diameter of the segment is primary expanded. At this time, a slight gap is still left between the segment and the inner circumferential surface of the coil. Therefore, about the half circumference of the rear end side of the inner peripheral paper falls apart from the segment by its own weight and abuts along the inner peripheral surface of the coil. After that, the segment of the core wire is expanded to fill the inner diameter of the coil so that the inner peripheral sheet is properly adhered to the inner peripheral surface of the coil, and at the same time, the overlapping portions of the front and rear ends of the inner peripheral sheet are bonded. In this way, it can be easily adapted and mounted to inner holes of various sizes.

Further, according to the second method of mounting the inner peripheral paper of the metal coil of the present invention, the rear end side of the inner peripheral paper is hung by its own weight in the same manner as the first mounting method. After abutting along the inner circumferential surface of the coil, the mandrel is slightly reversed. Due to this reversal, the tip side of the inner peripheral paper rises from the segment outer surface and abuts along the coil inner peripheral surface (the rear end side is already hanging down to the coil inner peripheral surface, so the resistance is large, Do not travel with them). After that, the core wire segment is expanded to fill the inner diameter hole of the coil so that the inner peripheral sheet is properly adhered to the inner peripheral surface of the coil, and at the same time, the overlapping portions of the front and rear ends of the inner peripheral sheet are adhered. Can be closely attached.

In each of the above-described inner peripheral paper mounting methods, when the inner peripheral paper front end side suction header of the mandrel is positioned and inserted so as to be in the vicinity of the substantially horizontal position, the inner peripheral papers are overlapped and wound. It is easy for the end part to hang down by its own weight, and the amount of the hang down becomes large for about half a turn, so that it can be firmly attached to the inner peripheral surface of the coil. Further, by retracting the suction header side of the segment in which the inner peripheral paper front side suction header is arranged, in the inner diameter direction, even if the front end of the inner peripheral paper is coated with an adhesive and wound, it is not adhered. Lastly, the diameter of the inner peripheral paper and thus the diameter of the core metal can be freely increased until the diameter of the segment is secondarily expanded by the expansion / contraction means and the ends of the inner peripheral paper are bonded, so that it is easy to deal with various coil inner diameters.

In the apparatus for mounting the inner peripheral paper of the metal coil of the present invention, the inner peripheral paper suction headers are provided only on both end sides of the front and rear inner peripheral papers (that is, only adjacent two of the plurality of segments). ) Is provided to simplify the structure, and when the diameter of the mandrel is expanded by the expansion / contraction means after it is inserted into the coil, the suction of the suction header of the inner peripheral paper rear end side is released to release the paper constraint, It is possible to allow a free diameter expansion and follow changes in the coil inner diameter.

The expansion / contraction means for expanding / contracting the segment is constituted by a combination of a nut movably screwed to a screw shaft and a so-called Scott-Russell type link device, and rotating the screw shaft in the forward and reverse directions. Thus, each segment connected to the link is moved in the radial direction through the movement of the nut to expand or reduce the outer diameter of the cored bar. Moreover, since a spring is interposed at the joint between the nut and the link, if any one of the segments arranged on the outer circumference of the mandrel comes into contact with the inner diameter of the coil earlier than the other segments, the one-side contact occurs quickly. The acting force applied to the segment in the radial direction is absorbed by the spring thereafter and the diameter is not expanded further. On the other hand, the other untouched segments are still expanded by screw rotation. Therefore, even if the center of the coil does not coincide with the center of the mandrel (even if it is eccentric), finally all the segments are securely and uniformly pressed to the inner peripheral surface of the coil via the inner peripheral paper.

The segment provided with the suction header on the front end side of the inner peripheral paper is formed by bending inward and is always retracted in the inner diameter direction. Finally, when adhering the overlapped end portions of the inner peripheral paper, the back surface side is pressed by a pressing device to extend the bent portion, thereby deforming in the outer diameter direction and pressing. After wrapping the inner peripheral paper around the segment and sandwiching the overlapped portion of the paper with a gripper to prevent loosening of the paper, the insertion into the coil inner diameter hole can be performed more smoothly.

Further, if a collision detection sensor is provided at the end of the insertion side of the segment, in the case of misalignment due to excessive eccentricity with respect to the inner diameter hole of the coil, the misalignment is contacted with the coil end face to detect the misalignment and stop the device. Can be made.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. First, the configuration will be described. FIG. 1 is a plan view showing an overall layout of an inner peripheral paper mounting process of a metal coil. In FIG. 1, 1 is a metal coil (hereinafter, simply referred to as coil), 2 is a coil 1 from the previous process. A coil conveying facility for carrying the process to the subsequent process, 3 is an inner peripheral sheet supplying facility, 4 is an inner peripheral sheet mounting device, and is provided with an inner peripheral sheet winding head 5.

The coil conveying equipment 2 of this embodiment is of a chain conveyor type, and FIGS. 2 and 3 show the outline thereof. A shallow V-shaped skid 22 for mounting the coil 1 is connected to the chain 21. An opening 24 for a coil lifter 23 is provided between the two chains 21 running in parallel to raise and lower the skid 22 in the inner peripheral paper mounting process. The coil lifter 23 is guided by a guide 25 and moved up and down by a cylinder 26.

The inner peripheral paper supply facility 3 supplies the inner peripheral paper 7 cut to a predetermined length and coated with the adhesive 6 at its tip end to the inner peripheral paper winding head 5 in the lateral direction. The inner peripheral paper loading device 4 winds the supplied inner peripheral paper 7 around the inner peripheral paper winding head 5 in a cylindrical shape as described later, and is self-propelled on a track 8 by driving an actuator (not shown) to a predetermined position. The inner peripheral paper winding head 5 is inserted into the inner diameter hole 1a of the coil 1 which is on standby, and the inner peripheral paper 7 is mounted on the inner peripheral surface of the coil.

Details of the inner paper winding head 5 are shown in FIGS.
This will be described with reference to FIG. This one is equipped with a rotating cylindrical shaft 51, which is supported in a cantilever manner on a rotating portion 41 of the inner peripheral paper mounting device 4 via a flange 42 so as to be integrally rotatable. On the outer circumference of the rotary cylinder shaft 51, a plurality of (five in the figure) inner circumference paper winding segments (hereinafter, simply referred to as segments) 52A to E each having a shape in which a cylinder is divided into longitudinal divisions.
However, they are arranged in a substantially cylindrical shape via expansion / contraction means 53 (described later) to form a mandrel. Each of the segments 52A to E of the inner peripheral paper winding head (hereinafter referred to as a mandrel) 5 is made of an elastic material such as a steel plate. Then, one of the segments 52A is provided with an inner peripheral paper front end side suction header 54 on the back surface near one edge, and a large number of suction holes 54 are provided.
a is formed penetrating the surface of the segment. Also,
An inner peripheral paper rear end side suction header 55 is provided on the back surface near the edge of the adjacent segment 52E, and a large number of suction holes 55a are also formed penetrating the segment surface.

A shock absorbing member 52Aa such as rubber is attached to the steel plate surface of the segment 52A. In addition, the end portion having the suction header 54 on the front end side of the inner peripheral paper is bent slightly toward the inside of the mandrel and retracted, and a pressing device 56 for pushing the retracted portion outward is provided on the back surface side of the segment. ing. In the pressing device 56, a fixed arm 56b has a shaft 58 fixed to one end thereof and a head of an air cylinder 56a rotatably attached to the other end thereof. Further, 57 is a bracket, which is integrally attached to the back surface of the segment 52A, and
One end thereof is pivotally supported by the shaft 58, and the other end thereof is pivotally supported by the rod of the air cylinder 56a.

The details of the segment expanding / contracting means 53 are as follows. The screw shaft 60 is inserted into the shaft center portion of the rotating cylindrical shaft 51 of the mandrel 5. The screw shaft 60 is rotatably supported by a rotating cylindrical shaft 51 via a bearing 61, and the shaft root portion is connected to a rotation output shaft 43 of a motor (not shown) incorporated in the inner peripheral paper mounting device 4. There is. The threaded portion 62 of the threaded shaft 60 is formed in a relatively short length at two locations, namely, a rear portion of the shaft and a front portion of the shaft.

On the other hand, on the shaft wall of the rotary cylindrical shaft 51, an opening 63 having substantially the same length as the threaded portion 62 is formed at a position corresponding to the threaded portion 62 so as to face each other. A nut 64 is screwed onto the screw portion 62 of the screw shaft 60. The nut 64 is a nut screw portion 64 screwed into the screw portion 62 of the shaft.
a and a pentagonal nut body 64b fitted to the outer surface of the rotary cylindrical shaft 51 are connected through the opening 63, and when the screw shaft 60 rotates independently of the rotary cylindrical shaft 51, It is designed to move axially within its length.

A sliding member 66 guided by a guide groove 65 is attached to each plane of the pentagonal nut body 64b so as to be movable in the axial direction. Then, a link mechanism (Scott Russell type in this embodiment) 70 using the sliding body 66 as a slider is interposed between the rotating cylindrical shaft 51 and the segments 52A to 52E. One end of the first link 71 of the link mechanism 70 is pivotally supported by the sliding body 66, and the other end thereof is pivotally supported by the support shaft 58 fixed to the back surface of the segment 52A. One end of the second link 72, which is half the length of the first link 71, is pivotally supported at the midpoint of the first link 71, and the other end serving as the center of rotation is provided on the outer surface of the rotating cylindrical shaft 51. It is pivotally supported by the fixing member 73.

A coil spring 74, which is expandable and contractible in the axial direction, is interposed between the sliding body 66, which has one end of the first link 71 axially supported, and the nut body 64b. Two link mechanisms 70 are provided on each of the back surfaces of the segments 52A to 52E, and each of the link mechanisms 70 has the same configuration as described above. The rotation of the rotary cylindrical shaft 51 is transmitted to the segments 52A to 52E through the link mechanism 70, and the mandrel 5 rotates to wind up the inner peripheral paper 7.

The suction header 54 on the leading edge side of the inner peripheral sheet is connected to an exhaust device (not shown) from one end thereof through a vacuum rubber tube 77. The same applies to exhaust of the suction header 55 on the rear end side of the inner peripheral sheet. A gripper device 80 is attached to the segment tip of the mandrel 5. This gripper device 80
Is for holding the wound shape by sandwiching the overlapped portion of the wound inner peripheral paper 7, and an air cylinder 8 whose end is axially supported on the back surface of any segment (for example, 52C).
1 and a grip head 8 disposed on the back surface of the segment via a linear guide device 82 so as to be movable in the axial direction.
3 and a lever-type grip hand 85 that is opened and closed by an air cylinder 84 mounted on the head 83 thereof.
During winding, the air cylinder 81 is extended and moved forward to stand by at a position where it does not get in the way. After winding, the air cylinder 84 is retracted to the operating position and the air cylinder 84 rotates the grip hand 85 to rotate the gripped portion to the grip hand 85. And segment (5
2C). In addition,
In the gripper device 80, since the length of the inner peripheral paper 7 differs depending on the size of the inner diameter hole of the coil 1, the attachment position and the number of attachments are selected according to the length of the inner peripheral paper 7 used. It

Further, a collision detection sensor 86 is attached to the tip of the segment of the mandrel 5. The collision detection sensor 86 is, for example, a mechanical switch in which a micro switch is enclosed in a case, and the inner diameter hole 1 a of the coil 1 is provided.
A function of colliding with the end surface of the coil 1 when the core 5 is inserted in the core 5 if the alignment in the height direction is poor and sending the signal to a control system (not shown) to stop the forward movement of the inner circumference paper loading device 4. Is equipped with.

Therefore, the collision detection sensor 86 is not necessarily a contact type mechanical switch, but may be a photoelectric switch or other non-contact type proximity switch. In addition, a segment 52A is provided on the rear end side of the mandrel 5 to protect the device.
A sensor 87 for detecting enlargement / reduction of E to E is provided. 87
a is for reduction limit position detection, and 87b is for expansion limit position detection, and uses a photoelectric switch. The expansion / contraction control of the segments 52A to 52E corresponding to the coil inner diameter is performed by using a detection value of an encoder (not shown) attached to the screw shaft 60.

Next, the operation of the mandrel 5 constructed as above will be described. Initially, the inner peripheral paper mounting device 4 is on standby at the inner peripheral paper winding position, and the nut 64 of the mandrel 5 is at a position detected by the photoelectric switch 87a for detecting the expansion / contraction origin position. Therefore, the diameters of the segments 52A to 52E are reduced. The degree of this diameter reduction is such that the outer diameter of the cored bar 5 in that state is the smallest inner diameter hole 1a of the coil 1 to be packaged.
The diameter is set to be smaller than the diameter. Further, the mandrel 5 is positioned so that the suction header 54 on the front end side of the inner peripheral paper of the segment 52A is almost directly above.

The coil 1 is placed on the skid 22 and is transported by the coil transport facility 2 to be stopped at a fixed position. Then, the coil lifter 23 raises the coil 1 to a predetermined height and makes it stand by.
First, as shown in FIG. 7A, the inner peripheral paper feeding equipment 3
At the end, the adhesive 6
The inner peripheral paper 7 coated with is supplied laterally to the mandrel 5 and stops on the suction header 54 on the leading end side of the inner peripheral paper. Next, the suction header 54 on the leading edge side of the inner circumferential sheet is evacuated, the leading edge of the inner circumferential sheet 7 is sucked, and is held by the segment 52A.

Next, the rotating cylindrical shaft 51 is driven to rotate the mandrel 5 counterclockwise in the figure, so that the inner peripheral paper 7 is divided into the segments 5 respectively.
Wind it up on the outer surface of 2A-E. During this winding
As shown in FIG. 8, the pressing roll 10 arranged on the outer periphery of the mandrel 5
Then, the inner peripheral paper 7 may be pressed against and held by the mandrel 5. When the mandrel 5 rotates almost once, the rear end side of the inner peripheral paper 7 is sucked by the inner peripheral paper rear end side suction header 55.
The mandrel 5 is continuously rotated by one rotation plus α (for example, about one and a half rotations). In the rotation of plus α, the rear end side is overlapped and wound up on the front end side of the inner peripheral paper 7. At this time, the suction header 54 on the front end side of the inner peripheral paper is retracted inward from the suction header 55 on the rear end side of the inner peripheral paper,
The adhesive 6 is wound up in a state of being separated from the inner peripheral paper 7 which is overlapped.

After the winding of the inner peripheral paper, the air cylinder 81 of the gripper device 80 is operated to retract the grip head 83 and the air cylinder 84 is operated, and the inner peripheral paper 7 is superposed by the grip hand 85. The end is gripped to prevent rewinding (FIG. 7 (b)). After the inner peripheral paper 7 is wound around the mandrel 5 in this manner, the inner peripheral paper mounting device 4
Is run toward the coil 1, and the mandrel 5 is inserted into the inner diameter hole 1a of the coil 1. At this time, the center of the coil 1 and the center of the mandrel 5 of the inner peripheral paper mounting device 4 are substantially aligned. If an attempt is made to insert them while the centers of the two are greatly displaced, the collision detection sensor 86 at the tip of the mandrel 5 interferes with the end face of the coil 1 and operates, and the insertion is automatically stopped.

The front end portion of the cylindrical inner peripheral paper 7 inserted in the coil (at the position of the inner peripheral paper front end side suction header 54) is initially at the position of 7 o'clock to 6 o'clock of the clockwise hand. Therefore, the rotating cylindrical shaft 51 is slightly counterclockwise rotated to align the leading edge of the inner peripheral paper with the position at about 8 o'clock, and position it so that it is near the horizontal position. Next, the air cylinder 84 of the gripper device 80 is operated to operate the grip hand 8
The gripping of the overlapping end portion of the inner peripheral sheet 7 by 5 is released, and the air cylinder 81 is further operated to retract the grip head 83 forward. In addition, the suction header 55
The negative pressure is released to the atmosphere to release the holding of the rear end side of the inner peripheral paper 7. At the same time, the diameters of the segments 52A to 52E of the mandrel 5 are temporarily expanded, and the segments 52A to E are temporarily stopped inside the coil by about 20 mm.

As a result, the rear end side of the inner peripheral paper 7 wound around the mandrel 5 hangs down by its own weight, and the lower half of the inner peripheral paper 7 abuts along the inner peripheral surface of the coil as shown in FIG. 7 (c). become. The operation of this primary diameter expansion is performed in the following procedure. The screw shaft 60 of the expansion / contraction unit 53 is rotated to advance the nut 64 by a predetermined distance. The nut 64 pushes the sliding body 66 (slider of the link mechanism 70) forward through the coil spring 74.
Accordingly, the first and second links 7 of the link mechanism 70
1, 72 respectively rotate in the rising direction to move the segments 52A to 52E in the outer diameter direction. When the nut 64 moves forward by a predetermined distance, the signal is transmitted to a control device (not shown), the rotation of the motor output shaft 43 and further the screw shaft 60 is stopped, and the primary diameter expansion of the segment is automatically ended.

Next, the rotating cylindrical shaft 51 is rotationally operated to reversely rotate the mandrel 5 in the counterclockwise direction (rewinding direction) in FIG. 7 by a central angle of about 30 ° (that is, from 8 o'clock to 9 o'clock).
This reverse rotation of the mandrel does not necessarily have to be performed, but by performing this reverse rotation, the inner peripheral paper 7 whose front end is still suction-held by the inner peripheral paper front end side suction header 54 is located above the front end side. Half of the core floats from the outer surface of the mandrel and abuts along the inner peripheral surface of the coil. Therefore, as shown in FIG.
It is possible to naturally fit the entire inner surface of the coil to the inner circumferential surface of the coil without forcibly expanding it by the segments 52A to 52E.

After that, the screw shaft 60 is further rotated to secondarily expand the diameters of the segments 52A to 52E of the mandrel 5 until they come into close contact with the inner peripheral surface of the coil, and the inner peripheral paper 7 is pressed against the inner peripheral surface of the coil.
Then, the pressing device 56 provided on the back surface of the segment 52A.
By operating the air cylinder 56a of FIG. 6 to rotate the bracket 57 inward, the end of the segment 52A that has been bent inward is pushed outward and expanded.
As shown in (e), the adhesive 6 applied to the front surface of the inner peripheral paper 7 is pressed against the rear surface of the rear end of the inner peripheral paper 7 for adhesion. The negative pressure of the suction header 54 on the leading edge side of the inner circumferential sheet is released to release the holding of the leading edge of the inner circumferential sheet 7.

Finally, by operating the expansion / contraction means 53, the segments 52A to 52E are moved inward to reduce the diameter of the mandrel 5, and the inner peripheral paper mounting device 4 is moved backward to move the mandrel 5 to the coil 1. A series of steps for attaching the inner peripheral paper to the metal coil by extracting from the inner peripheral hole 1a is completed. When the mandrel 5 is inserted into the coil inner diameter hole 1a, if the center of the coil 1 and the center of the mandrel 5 do not coincide with each other, for example, the coil center is above (higher than) the center of the mandrel 5. Then, when the diameter of the segments 52A to E is expanded by the forward movement of the nut 64, the upper segment first comes into contact with the inner peripheral surface of the coil and the diameter expansion is stopped. However, since the lower segment is not in contact with the inner circumferential surface of the coil, the nut 64 continues to move forward and the segment diameter expanding operation is continued. Then, the lower segment comes into contact with the inner circumferential surface of the coil, and the nut 64 further advances to a predetermined position and stops. In the diameter expansion operation, the sliding body 66 is attached to the segment that previously comes into contact with the inner circumferential surface of the coil.
Remains stopped, and the nut 64 moves while compressing the coil spring 74.

That is, since the diameters of the segments 52A to 52E are expanded through the coil springs 74, the coil springs 74 can absorb the reaction force received from the coil inner peripheral surface by the first contacting segment. . Therefore, even if the center of the coil does not completely coincide with the center of the mandrel and there is some deviation, the inner peripheral paper 7 can be reliably brought into contact with the inner peripheral surface of the coil.

By the way, the following results were obtained when a comparative test of mounting inner peripheral paper was carried out on two types of coils having different sizes. (1) Used inner peripheral paper mounting method and device: Case A: When using the inner peripheral paper mounting method and device of the metal coil of the present invention. Case B: A case in which the coil springs 74 of the expansion / contraction means 53 are removed from the method and apparatus for mounting an inner peripheral sheet of a metal coil of the present invention so that the segments 52A to 52E cannot be individually expanded in diameter.

Case C: When using another type of inner peripheral paper loading device in which the diameter of the segment cannot be increased by itself. (2) Size of coil used: inner diameter 408 mm, outer diameter 1500 mm, width 850 mm coil and inner diameter 508 m
m, outer diameter 1450 mm, width 900 mm coil.

By adjusting the rising height of the coil lifter, the amount of deviation was set so that the coil center was 3 mm below the center of the mandrel (there was some variation due to the difference in coil weight). (3) Result:

[0053]

[Table 1]

From the above results, it is clear that the adhesion of the inner peripheral sheet to the inner peripheral surface of the coil is greatly improved by the method and apparatus for mounting the inner peripheral sheet of the metal coil of the present invention.

[0055]

As described above, according to the present invention, the inner circumference paper winding core is provided with the inner circumference paper leading end side suction header and the inner circumference paper rear end side suction header, and the inner circumference paper is wound on the inner circumference paper. While adsorbing the front and rear end sides of the core, rotate the mandrel one extra turn to wind up the inner paper, insert the mandrel into the coil inner diameter hole, and open the suction header on the rear end of the inner paper and The primary diameter of the gold segment is expanded and the rear end side of the inner peripheral paper is placed along the inner peripheral surface of the coil.
After that, since the core wire segment was expanded to a secondary diameter and the inner peripheral paper was pressed against the inner peripheral surface of the coil, the inner peripheral paper was forced to contact the inner peripheral surface of the coil by the segment before the self-weight. It has the effect that it can hang down along the inner peripheral surface of the coil and can be closely attached to the coil, and the adhesion of the inner peripheral sheet to the coil can be improved.

According to the present invention, the suction header of the inner peripheral paper is required only at two positions, the front end side of the inner peripheral paper and the rear end side of the inner peripheral paper, and it is not necessary to install each segment, so that the device structure is simple. It can be done and the piping does not get complicated. Further, according to the present invention, after the core of the core segment is expanded in diameter so that the rear end side of the inner peripheral paper is along the inner peripheral surface of the coil, the core is rotated in some reverse direction before the secondary expansion. By doing so, the tip end side of the inner peripheral paper is made to float from the mandrel so as to be along the inner peripheral surface of the coil, so that the adhesion of the inner peripheral paper to the coil is further improved.

When the mandrel is inserted into the inner diameter hole of the coil, if the suction header on the front end side of the inner peripheral paper is positioned so as to be in the vicinity of the substantially horizontal position, the inner peripheral paper comes into close contact with the inner peripheral surface of the coil due to sagging or rising. The face can be maximized. Further, in the present invention, the segment for adsorbing the adhesive-applied portion of the tip of the inner peripheral paper is bent inward partially and the adhesive-applied portion is retracted to the inner diameter side in a non-adhesive state. The inner paper is wound around the core. Therefore, the inner peripheral paper wound in a free state can freely follow the diameter expansion of the segment, and the diameter expansion dimension of the core is not restricted by being constrained by the wound inner peripheral paper, The effect that it is possible to easily cope with variations in the inner diameter of the coil is obtained.

Moreover, when the inner peripheral paper is pressure-bonded to the inner peripheral surface of the coil by the segment, the inner peripheral paper is pushed out to the outside in the inner diameter direction of the segment and is finally adhered, so that the inner peripheral paper is reliably performed and Good adhesion to the inner surface is guaranteed. Further, according to the present invention, since the expansion / contraction means of each segment of the mandrel is constituted by the link device and the operation of the link is performed via the coil spring, the misalignment between the center of the coil and the center of the mandrel is somewhat. Even if there is, it is possible to obtain the effect that the deviation is automatically absorbed and the inner peripheral paper can be mounted in a completely adhered state.

Further, according to the embodiment of the present invention, since the gripper is provided at the tip of the mandrel so as to be retractable, it is possible to prevent the rewinding of the inner peripheral sheet before the last bonding, and the insertion into the coil inner diameter hole is easy. And there is an effect that it can be surely performed. Also,
Since the collision detection sensor is provided at the tip of the mandrel, it is possible to prevent the misalignment between the center of the coil and the center of the mandrel and to always attach the inner peripheral sheet with good adhesion.

[Brief description of drawings]

FIG. 1 is a plan view showing an overall layout of an inner peripheral paper mounting step of a metal coil according to the present invention.

FIG. 2 is a front view of a coil transfer device.

FIG. 3 is a side view of a coil transfer device.

FIG. 4 is a cross-sectional view of an inner circumference paper winding head (core wire).

5 is a sectional view (partially omitted) taken along line VV of FIG.

6 is a cross-sectional view (partially omitted) showing the expanded diameter state of FIG.

FIG. 7 is a schematic view for explaining the procedure for mounting the inner peripheral paper on the inner peripheral surface of the coil according to the present invention, in which (a) is the initial stage of winding on a core having a reduced diameter, and (b) is the winding of the inner peripheral paper. (C) when completed
Shows a state in which the coil is inserted into the inner diameter hole of the coil and primary expanded, a state in which (d) is slightly reversely rotated, and (e) shows a state in which secondary expanded and the inner peripheral paper is pressed against the inner peripheral surface of the coil. .

FIG. 8 is a perspective view illustrating a winding process around the inner circumference paper winding head.

FIG. 9 is a schematic diagram for explaining a misaligned state when a conventional inner peripheral paper is attached.

FIG. 10 is a schematic diagram showing bending of the inner peripheral paper when the conventional inner peripheral paper is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal coil 4 Inner circumference paper mounting device 5 Mandrel (inner circumference paper winding head) 7 Inner circumference paper 51 Rotating cylindrical shaft 52A (Inner circumference paper winding) segment 52B (Inner circumference paper winding) Segment 52C (Inner circumference paper winding) Segment 52D (Inner circumference paper winding) Segment 52E (Inner circumference paper winding) Segment 53 (Segment) Expansion / contraction means 54 Inner circumference paper leading end side suction header 55 Inner circumference paper rear end side suction header 56 Pressing device 60 Screw shaft 64 Nut 66 Sliding Moving body 70 Link mechanism 71 First link 72 Second link 74 Spring 80 Gripper

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigeki Taniguchi 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki Steel Co., Ltd. Chiba Steel Works (72) Inventor Ehara Makoto Kawasaki-cho, Chuo-ku, Chiba-shi Kawasaki Steel Works Co., Ltd. in Chiba Steel Works (72) Inventor Hiroshi Nemoto 1 Kawasaki-cho, Chuo-ku, Chiba City, Chiba Prefecture Kawasaki Works Co., Ltd. in Chiba Works (72) Kenji Iwano 2-18 Imai, Chuo-ku, Chiba City, Chiba Prefecture 6 In stock company Shinwa Corporation (72) Inventor Masao Iwata 2-18-6 Imai Chuo-ku, Chiba-shi, Chiba Prefecture In stock company Shinwa Corporation (72) Inventor Yui Ishii 1514 Kawanoe-cho, Kawanoe-shi Ehime Prefecture Kawanoe Machinery Co., Ltd. 72) Inventor Masamichi Sugi 1514 Kawanoe-machi, Kawanoe-shi, Ehime Prefecture Kawanoe Machinery Co., Ltd. (72) Inventors Shinji Ehime Prefecture Kawanoe Kawanoe-cho, 1514 Kawanoezoki within Co., Ltd.

Claims (10)

[Claims] 1. A mandrel having an inner peripheral paper front end side suction header and an inner peripheral paper rear end side suction header arranged on a plurality of radially expandable / retractable divided segments, the diameter of which is reduced to a predetermined value by each of the suction headers. While adsorbing the inner peripheral paper of a length, the mandrel is rotated one extra turn to wind and hold the inner peripheral paper in a cylindrical shape, and the mandrel is inserted into the inner diameter hole of the coil to adsorb the inner peripheral paper rear end side. The header is opened and the core metal segment is primary expanded so that the rear end side of the inner peripheral paper is along the inner peripheral surface of the coil, and then the core metal segment is secondary expanded and the inner peripheral coil is coiled. A method for mounting an inner peripheral sheet of a metal coil, which comprises press-contacting the inner peripheral surface. 2. A mandrel having an inner peripheral paper front end side suction header and an inner peripheral paper rear end side suction header arranged in a plurality of radially expandable / retractable divided segments, and each predetermined suction header While adsorbing the inner peripheral paper of a length, the mandrel is rotated one extra turn to wind and hold the inner peripheral paper in a cylindrical shape, and the mandrel is inserted into the inner diameter hole of the coil to adsorb the inner peripheral paper rear end side. The header is opened and the core metal segment is expanded in diameter so that the rear end side of the inner peripheral paper is aligned with the inner peripheral surface of the coil. A method for mounting an inner peripheral paper of a metal coil, characterized in that the tip side of the metal core is arranged along the inner peripheral surface of the coil, and then the segment of the core metal is secondarily expanded to press the inner peripheral paper against the inner peripheral surface of the coil. 3. When inserting the mandrel wound with the inner peripheral paper into the inner diameter hole of the coil, the suction header on the front end side of the inner peripheral paper is positioned so as to be in the vicinity of a substantially horizontal position. Alternatively, the method of mounting the inner circumference paper of the metal coil according to the above item 2. 4. The inner peripheral paper winding of the core metal, the insertion into the inner diameter hole of the coil, the primary diameter expansion of the segment, with the suction header side of the segment having the inner peripheral paper front side suction header being retracted in the inner diameter direction. The secondary diameter expansion of the segment is performed, and then the retracted portion in the inner diameter direction of the segment in which the suction header on the inner peripheral paper front side is arranged is pressed in the outer diameter direction. How to install inner coil paper of metal coil. 5. An inner peripheral paper mounting device for a metal coil, which is preliminarily cut into a predetermined length and whose inner end is coated with an adhesive and which is cylindrically inserted into a coil inner diameter hole for mounting. A plurality of segments, each of which is expandable and contractible in a radial direction via expansion and contraction means, are arranged in a substantially cylindrical shape around a rotating cylindrical shaft, and the inner peripheral paper front end side suction header is provided next to one segment. An inner peripheral paper mounting device for a metal coil, wherein each segment has a core bar provided with a suction header on the rear end side of the inner peripheral paper. 6. The expansion / contraction means is provided outside the rotary cylindrical shaft through a screw shaft rotatably inserted into the rotary cylindrical shaft and an axially long opening provided in the rotary cylindrical shaft and screwed to the screw shaft. A nut that protrudes and is movable in the axial direction, one end of which is rotatably supported by the nut and the other end of which is rotatably supported by the rear surface of the segment, and one end of which is rotatably supported by the first link The other end is a second shaft supported by a rotating cylindrical shaft.
6. A device for mounting an inner peripheral sheet of a metal coil according to claim 5, further comprising: 7. One end of the first link of the expansion / contraction means is axially supported by a sliding body formed so as to be movable in the axial direction independently of the nut, and is expanded / contracted in the axial direction between the sliding body and the nut. 7. An inner peripheral paper mounting device for a metal coil according to claim 6, wherein a possible spring is interposed. 8. A segment having a suction header on the front end side of the inner peripheral paper, an end portion having the header bends inward of the mandrel,
8. An inner peripheral paper mounting device for a metal coil according to any one of claims 5 to 7, further comprising a pressing device for pressing an inward bent portion and expanding the mandrel outwardly on the rear surface side of the segment. . 9. The metal coil according to claim 5, wherein a gripper is provided at an end portion on the insertion side of the segment so as to sandwich the overlapping portion of the inner peripheral paper sheet and maintain a winding shape. Peripheral paper mounting device device. 10. An apparatus for mounting an inner peripheral sheet of a metal coil according to claim 5, wherein a collision detection sensor for detecting a collision with the coil is provided at an end portion of the insertion side of the segment. .