JPH0111647Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an inner diameter holder for a metal strip coil.

Prior Art The end of the strip at the inner diameter of the central cavity of a metal strip coil (hereinafter simply referred to as a coil) may sag due to its own weight and the inner diameter may become smaller, or may become elastic due to the tension when the metal strip is wound. As the change is released, the strip layer near the inner diameter shifts, causing "loose winding." For example, a coil with such deformation of the inner diameter of the coil is
When unwinding the coil by attaching it to the unwinding reel in the next process, it is difficult to insert the inner diameter part of the coil into the reel, and during unwinding, the "looseness" of the coil near the inner diameter part of the coil may cause the coil to become loose. The tightening propagates to the layers near the outer diameter, and due to the relative movement between the layers of the winding, "winding scars" are created on the surface of the strip.
This may cause practical problems such as the occurrence of

In order to prevent the above-mentioned disadvantages, conventionally adopted methods include: () A method of winding a metal strip in a coil shape onto a steel tube (spool) or paper tube attached to a take-up reel and holding it there. It is being

The above method is preferable in that it prevents the coil from being "crushed and deformed," but on the other hand, it is practically difficult to separate the spool or paper tube from the coil after the coil is formed, and the winding of the spool or paper tube is difficult. It is also troublesome to attach it to the reel. As described above, since it takes time and effort to attach and detach the spool and paper tube, there is a dissatisfaction in that the work efficiency is extremely reduced.

() Another method is to insert and hold a wooden or metal "pecking rod" whose length can be adjusted into the inner diameter of the coil. The rod held within the coil becomes a hindrance when a hanging fitting or the like is inserted into the inner diameter of the coil and the coil is transported to a predetermined process or location, causing a major hindrance to transportation. Furthermore, when holding or removing the "pecking rod" within the inner diameter of the coil, it is necessary to adjust the length of the rod, which is inconvenient as it is not always easy to attach or remove it.

Problems to be Solved by the Invention The present invention has been devised in view of the shortcomings of conventional measures taken to prevent drooping of the strip ends at the inner diameter of the coil and loosening of the strip layer near the inner diameter. It is something.

The inner diameter holder for a metal strip coil according to the present invention is installed within the inner diameter of the coil during the period from immediately after winding the metal strip to immediately before unwinding in the next process, and prevents the end of the strip from sagging on the inner diameter of the coil. The purpose is to prevent the strip layer from loosening near the downward and inner diameter portions.

When devising this invention, the following conditions must be met:
The following items were set.

(a) Even if the inner diameter of the coil is slightly different, it can be easily installed and removed within the inner diameter of the coil.

(b) Even if the holder is held within the inner diameter of the coil, the coil can be transported safely without getting in the way of insertion of hanging metal fittings, etc.

(c) It must be easy to store and transport, and it can be manufactured at low cost.

Means for Solving the Problems In order to achieve the above objectives and satisfy each of the above items, the present invention was constructed as follows.

A part of the circumference of a metal cylindrical ring whose outer diameter is the inner diameter of the metal strip coil is notched to an appropriate length, and pin joints are provided on the inner end surfaces of the ring on both sides of the notch. Connect one end of a connecting link whose length is adjustable to a joint, connect one end of a connecting link with a constant length to another pin joint, and connect the other ends of each connecting link with a pin by overlapping each other. , the sum of the lengths of the two connecting links is slightly longer than the distance between the pins of each pin joint.

Effect By configuring as above, the outer diameter of the holder can be expanded or decreased with a single touch.
After the coil is formed, it can be easily attached and removed inside the inner diameter part, and if the connecting link part as an element constituting this holder is set in the lower part of the inner diameter part of the coil, the hanging fitting etc. can be attached to the upper part of the inner diameter part of the coil. Since it can be inserted into the coil, there is no problem in transporting the coil. Further, it is possible to accurately prevent the strip from hanging down at the inner diameter of the coil and loosening of the strip layer near the inner diameter.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. In FIGS.
Formed into a cylindrical ring with a width of 1.5 to 5.0 mm and a width of 30 to 100 mm)
The notch 2 is formed by cutting a portion of the ring 1 on its circumference by an appropriate length, for example, 1/10 to 1/2 of the diameter. Pin joints 3, 3 are provided on the ring inner side end surfaces on both sides of this notch, and one end of a connecting link 4 whose length is adjustable is connected to one of the pin joints by a pin A. As illustrated in FIG. 3, this connecting link 4 is made by cutting a rod into two, and providing threads in different directions on the left and right on the surface of each cutting rod 6, 6a. It has a structure in which square nuts 7 with cut threads are screwed together, the other end of each cutting rod is formed into a round flat shape, and a pin hole 8 is drilled in the center of each of the cutting rods. By turning the square nut 7, the length of the connecting link 4 is adjusted to a predetermined length.

One end of a connecting link 4a with a bent arm 5 at the top is connected to the other pin joint 3 by a pin B, and the other ends of each connecting link 4, 4a are stacked on top of each other and connected to a pin C.
are connected. The sum of the lengths of the two connecting links 4, 4a (the length at the center of the pin shown in the figure +) is slightly longer than the distance between the pins (shown) of the pin joints 3, 3 provided on the inner end surfaces of both rings of the notch 2. The inner diameter holder of the coil is constructed by configuring it to be long (for example, 1.01 to 1.05 times the length).

The cylindrical ring 1 having the notch 2 described above may be, for example, a steel band cut into an appropriate length and rolled into a C-shaped ring shape.

By pulling the intersection pin C portion of the two connecting links 4, 4a of the coil holder according to the present invention toward the center of the cylinder (or pulling the bent arm 5), the cylindrical ring becomes smaller than the inner diameter of the coil. . In this state, each connecting link is turned downward and inserted into the inner diameter of the coil, and then the intersection point C of the two links is strongly pushed toward the coil side (or the bent arm 5 is strongly pushed) to form a cylinder. The shaped ring expands, and as shown in Figure 2, the link passes through the dead center, and the intersection point C of the two links comes into contact with the inner diameter D surface of the coil and stops, and does not return to its original position, so the coil can be properly tightened. The inner diameter part can be held.

When detaching the holder mounted inside the inner diameter portion of the coil, it can be easily removed by reversing the above procedure.

The holder according to the present invention prevents the ends of the strip from hanging down at the inner diameter of the coil and the strip layer near the inner diameter from loosening.
When installed inside the inner diameter of the coil, as shown in FIG. 2, the intersection point C of the two connecting links comes into contact with the surface of the inner diameter D of the coil and is stably held. Therefore, in the present invention, the sum (+) of the lengths of the two connecting links is set to be slightly longer than the distance () between the pins of the pin joints provided on both inner end surfaces of the ring notch 2. X in the figure is the amount of overshoot of the link, and this amount of X is determined by the external shape of the link.

FIGS. 4 and 5 show another embodiment of the present invention, and the difference in configuration from the holder shown in FIGS. 1 and 2 is that the connecting link has a length-adjustable structure. The structure is shown in FIG. 6. In the same figure, reference numeral 6 denotes a rod 6 whose one end is formed into a round flat shape and a pin hole 8 is bored.
A cylindrical slide hole 6 in which the axial center of a is formed into a cylindrical shape.
a′ so that these two rods 6, 6a
The coil spring 1 is placed between the spring receivers 9 and 9' provided in the
0 is inserted through the rod 6, and the stop pin 11 is inserted from the rod 6a through the rod 6, and the stop pin 1 is inserted through the rod 6a.
1 slides in an oblong hole 6b' having an appropriate length, which is bored vertically in opposition to the rod 6a. rod 6
One end of a is formed into a round flat shape, and a pin hole 8 is bored therein. As shown in FIGS. 3 and 4, one end of the connecting link 4 configured in this way is connected by a pin A to a pin joint 3 provided on the inner end surface of the ring on both sides of the notch 2 of the cylindrical ring 1. Then, connect one end of the connecting link 4a with the bent arm 5 to the corresponding pin joint 3 with the pin B.
and connect the overlapping portions of the other ends of the two connecting links with a pin C. Pin holes B and C of connecting link 4a
Since the length of the connecting link 4 is constant, the length of the connecting link 4 is automatically adjusted to a predetermined length (the distance between the pin holes A and C) by the spring force of the coil spring 10.

Even when the connecting link shown in FIG. 6 is used, the operation of attaching and detaching the holder when it is attached to the inner diameter of the coil is carried out in accordance with the operation explained in FIGS. 1 and 2.

In the illustration, an example is shown where it is provided on the side of the connecting link 4 whose length is adjustable, but it may be provided on one side of the connecting link 4a, and the other connecting link may be a straight connecting link. In this way, one of the two connecting links is configured to be adjustable in length.

Moreover, two or more holders according to the present invention can be used within the inner diameter portion of one coil, if necessary.

Further, in the illustration, the connecting link 4a is provided with a bent arm 5 to serve as a handle, but as described above, it is not necessary to provide this bent arm 5.

Effects of the invention According to the holder according to the invention, the length of one connecting link can be adjusted, so the holding force can be finely adjusted, and the holder can be used even for coils with slightly different inner diameters. In addition, it is easy to attach and detach within the inner diameter of the coil, and it can accurately prevent the ends from hanging down and loosening of the coil in the inner diameter of the coil, eliminating troubles that occur during the unwinding process in the next process. can do. Furthermore, the coil can be transported safely without any hindrance, the holder is easy to store and transport, and it can be manufactured at a lower cost than conventional steel pipe spools, which are unique to this invention. It has the following effects.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of the holder according to the present invention, FIG. 2 is an explanatory diagram showing the state in which the holder of the present invention is installed inside the coil inner diameter, and FIG. 3 is the same as in FIG. 1. FIG. 4 is a configuration diagram showing another embodiment of the present invention; FIG. 5 is an explanatory diagram showing the holder mounted inside the coil inner diameter; FIG. 6 is a configuration diagram of a connecting link in FIG. 4 whose length is adjustable. 1... Cylindrical ring, 2... Notch, 3... Pin joint, 4, 4a... Connecting link, 6, 6a...
Rod, 7... Square nut, 10... Coil spring, 1
1... Locking pin.

Claims (1)

[Scope of utility model registration request] A part of the circumference of a metal cylindrical ring 1 whose outer diameter is the inner diameter of the metal strip coil is cut out to an appropriate length, and pin joints 3, 3 are attached to the inner end surfaces of the ring on both sides of the cutout 2, respectively. One end of a connecting link 4 configured to be adjustable in length is connected to one pin joint, one end of a connecting link 4a having a constant length is connected to another pin joint, and the other end of each of the connecting links is connected to the other pin joint. An inner diameter holder for a metal strip coil, characterized in that the parts are overlapped and connected with a pin C, and the sum of the lengths of the two connecting links is slightly longer than the distance between the pins of the pin joints 3, 3.