JPS643527Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a coil cradle for supplying a plate-shaped material, that is, a coil material, as a workpiece to a press machine.

(Prior art) When automating a press machine, a coil material cradle is used that unwinds the coil material (plate-shaped material) that is the workpiece, corrects curls, and supplies it to the press machine. -Refer to Publication No. 18307). A conventional cradle has a plurality of coil material receiving rolls rotatably mounted on the lower part of the cradle main body, a set of two side plates is arranged inside the main body, and the coil material is placed on the receiving rolls between the both side plates. It is set to be placed there. Therefore, by rotating the receiving roll, the coil material is rotated and the coil material is rewound.

(Problem that the invention aims to solve) However, in the conventional cradle, the coil material placed on the receiving roll is rotated while being sandwiched between the side plates from both sides. A force is generated that tends to loosen the coil and shift it in the width direction of the coil, and two to three turns of the outer circumference of the coil material are brought into pressure contact with the side plate. Therefore, if the coil material is thin or made of soft material, there is a problem that the ends of the coil material may be damaged or deformed, and if the unwinding resistance due to friction between the coil material and the side plate increases, the coil It may become impossible to feed out the material.

(Means for Solving the Problems) This invention was made to solve the above-mentioned problems, and its features are as follows.

In other words, this invention has a cradle at the bottom of the cradle body, which is equipped with a plurality of plate-shaped machine frames facing each other in the front and back direction.
Multiple coil material receiving rolls are rotatably mounted on a shaft,
In a coil cradle in which a set of two side plates is arranged between a plate-shaped machine frame and a coil material is placed on a receiving roll between both side plates, a hole through which the receiving roll passes through the side plate is provided. The provided coil guide ring is rotatably mounted, the opposing surface of the guide ring slightly protrudes inward from the side plate opposing surface, and the receiving roll is configured not to contact the guide ring. In addition, the guide ring is attached to the side plate via a bearing, so it rotates smoothly. Furthermore, the outer periphery of the opposing surface of the guide ring is tapered so that the distance between the opposing faces gradually increases, so that the coil material can be easily rotated. Able to provide smooth guidance.

(Function) According to this invention, even when the coil material is fed out by rotation, the end surface of the coil material contacts the surface facing the guide ring, and the coil material and the guide ring rotate together, so the frictional resistance between the two is extremely high. Even if there is slight deviation due to loosening of the coil material,
It rolls out smoothly. Further, since a clearance is provided between the guide ring and the receiving roll, the movement of both side plates is easy, and the distance between both side plates can be adjusted and changed as desired.

(Example) Hereinafter, an example of this invention will be described in detail with reference to the drawings. Note that this embodiment is of a type in which a set of two side plates are provided between the machine frames.

In the drawing, 1 is a cradle main body equipped with two plate-shaped machine frames 2, 2 facing each other in the front and back direction, 3, 3 are coil material receiving rolls, and 4, 4 are coil material support guide rolls. is rotatably mounted on the machine frames 2, 2. 5, 5 are side plates for guiding the coil material C, and are attached to the machine frames 2, 2 by three support rods 6, and the interval between the side plates 5, 5 can be freely adjusted according to the width of the coil material C. It is being In addition, 7 is a rotation handle of the support rod 6, and by rotating this, the interval between the side plates 5, 5 can be adjusted.
This handle 7 can be attached to another support rod 6 and rotated in the same way.

A sprocket 8 is fixed to the receiving roll 3, and a chain 10 is placed between it and a drive sprocket 9 attached to a drive source (not shown), and the chain 10 is driven to rotate in the same direction. Regardless of size, it is always sent out at a constant circumferential speed. Reference numeral 11 denotes a correction roller device for removing curls in the coil material C, and is adapted to automatically feed the rewound material plate P to a press machine. The side plate 5 has a guide ring 12 that passes through the receiving roll 3 as shown in FIG.
It is detachably attached via a bearing 13 and a bearing case 14 with a bolt 15. This guide ring 12 is rotatable, but
The hole 12C and the receiving roll 3 are not in contact with each other, and are positioned by snap springs 16 and 17 so as not to move in the axial direction of the receiving roll 3 with respect to the side plate 5. And guide ring 12
The flange portion 12A of the guide ring 12 is tapered so that the opposing inner surface widens outward, and the outer peripheral edge is made to coincide with the opposing inner surface of the side plate 5. Therefore, the opposing surface 12B of the guide ring 12 It protrudes (approximately 1 mm) from the opposing inner surface and is further hardened. In addition, 18 and 18 are receiving roll bearings. Also, in Figure 1,
The sprocket for driving the receiving roll is not shown.

According to the embodiment of this invention, when the coil material C is fed out, the end face of the coil contacts the facing surface 12B of the guide ring 12 and rotates together with the guide ring 12. Therefore, the frictional resistance is extremely low, and the coil material C is smoothly unwound and straightened by the straightening roll device 11.
The curls are corrected and the material is automatically fed to the press machine. Then, on the outer periphery of the coil material C,
Even if loosening occurs as shown by C1 in Figure 2,
Misalignment in the width direction is prevented by the guide ring 12, and the feeding is smoothly carried out with little resistance to feeding. In the embodiment of this invention, a case has been described in which the plate-shaped machine frame 2 of the coil cradle body 1 is composed of two pieces, but it is also possible to use three or four plate-shaped machine frames 2 and arrange them at approximately equal intervals. At the same time, a set of two side plates 5 are arranged between the machine frames 2 and 2, respectively, to form two and three side plates.
It can be a continuous cradle.

(Effects of the invention) Since the coil cradle according to this invention is configured as described above, the end face of the coil material C contacts the guide ring inner end face 12B and is guided in a pinched state, and rotates together with the guide ring 12. Frictional resistance is reduced, and the end face of the coil material C is not pressed against the side plate 5, so that both ends of the coil material C are not damaged or deformed, and the outer circumference of the coil is not loosened. It exhibits many outstanding effects, such as not shifting in the width direction even when it is used.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; FIG. 1 is a sectional view taken along line A--A in FIG. 2, FIG. 2 is a front view, and FIG. 3 is a plan view. 1... Cradle body, 2... Machine frame, 3... Support roll, 4... Support roll, 5... Side plate, 6...
Support rod, 12...Coil material guide ring, 12A
...Flange part, 12B...Opposing surface, 12C...
Hole, 13...Bearing, 14...Bearing case, 15...Bolt, 16, 17...Snap spring, C...Coil material.

Claims (1)

[Scope of utility model registration request] In a coil cradle having a cradle body with a plurality of plate-shaped machine frames facing each other in the front-rear direction, a plurality of coil material receiving rolls are rotatably supported on the lower part of the cradle body, a pair of side plates are disposed between the plate-shaped machine frames, and a coil material is placed on the receiving rolls between the both side plates, a coil material guide ring having a hole through which the receiving rolls pass is rotatably attached to the side plates,
A device for preventing damage to coil material in a coil cradle, characterized in that the opposing surface of the guide ring protrudes slightly inward from the opposing surface of the side plate, and further, the receiving roll and the guide ring are configured not to come into contact with each other.