JPH0562005B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a device for curling the peripheral portion of a metal band fastened to the end of a fiber drum.

[Conventional technology]

Conventionally, in order to protect the end of the drum, which was formed of fiber, and to fix the lid attached to the fiber drum, a metal band formed in an annular shape is fitted to the end of the drum. It is designed to be curled with a jig.

[Problem to be solved by the invention]

In the above-mentioned conventional metal band curling method, first, the metal band is formed to have approximately the same diameter as the outer diameter of the fiber drum, but this metal band is made into an annular shape by welding the ends of band-shaped metal plates together in advance at another location. Because it is formed and delivered in a folded state, it has folds and the inner diameter of the band becomes smaller accordingly, making it very difficult to fit it onto the end of the fiber drum, and the fitting process is time-consuming. There was a problem that the work efficiency was extremely poor. In addition, because the metal band is difficult to fit onto the end of the fiber drum, it is usually hammered in with a hammer or a curling jig, so its periphery is easily crushed and becomes uneven when curled. There was also the problem that the product value decreased. This invention was proposed in view of the above problems.
To provide a metal band curling device that allows a metal band to be easily fitted to the end of a fiber drum and curls neatly.

[Means to solve the problem]

In order to achieve the above object, the present invention fixes a drive roller to one end of a rotary drive shaft that is rotatably supported by a casing, and fixes a drive roller to a part of an annular metal band placed on the drive roller. A nip roller that presses and rotates the metal band between the drive roller in line contact is disposed above the drive roller so as to be movable up and down, and outside of the vicinity where the drive roller and the nip roller face each other, A curling roller is provided on the peripheral edge of the metal band sandwiched between the drive roller and the nip roller so as to be able to come into contact with and separate from it,
The curling roller is characterized in that an annular curling groove having an arcuate cross section is formed on its circumferential surface.

[Effect]

First, a metal band formed in an annular shape is loosely fitted onto the drive roller, and then the nip roller is lowered to press against the drive roller, and the metal band is sandwiched between the nip roller and the drive roller. Rotate the drive roller. Then, the annular metal band is rotated while being securely held between the nip roller and the drive roller by the rotation of the drive roller. Next, the curling roller is moved from the outside of the metal band into contact with the periphery of the metal band, and the annular groove is gradually brought into pressure contact with the periphery of the rotating metal band. The curling roller is guided by an annular groove formed on the circumferential surface of the curling roller and is bent inward. In this way, the entire metal band whose peripheral edge is curled is reinforced at the curled portion, and is maintained in a substantially perfect circle.

【Example】

Hereinafter, embodiments of the present invention will be described based on the drawings. As shown in FIGS. 1 and 2, the curling device C includes a rotary drive shaft 2 rotatably supported approximately at the center of a square box-shaped casing 1, and a rotary drive shaft 2 that rotates the rotary drive shaft 2. It consists of a driving means 3 for driving, and a curling part 4 provided on a rotary drive shaft portion protruding outside the casing 1. The driving means 3 includes an electric motor 5 disposed inside the lower part of the casing 1 and a transmission shaft 6 rotatably supported on the casing 1 near the rotary drive shaft 2. It consists of a belt transmission mechanism 7 that transmits the rotation of the transmission shaft 6 and a gear reduction device 8 that decelerates the rotation of the transmission shaft 6 and transmits it to the rotary drive shaft 2. The curling processing section 4 includes a relatively large-diameter drive roller 9 attached to the tip of the rotary drive shaft 2;
A freely rotating nip roller 11 is provided above the drive roller 9 so as to be able to approach and separate from the upper surface of the drive roller 9 using a pneumatic cylinder 10, and a curling cylinder 13 is moved up and down by an elevating cylinder 12.
The curling roller 14 is moved toward and away from the outer end surface of the drive roller 9 by means of a curling roller 14. The curling roller 14 has an annular groove 15 formed in a rounded shape in a side view on its peripheral surface 14a. In FIG. 1, reference numeral 16 is a control panel, and by operating switches 16a, 16b, 16c, etc., the electric motor 5 and the pneumatic cylinder 1 are controlled.
0, lifting cylinder 12, curling cylinder 1
3 are operated in conjunction with each other. Further, in FIG. 2, reference numeral 17 denotes a regulating plate that can be slid back and forth according to the width of the metal band 18 loosely fitted to the drive roller 9.
The mechanism for slidingly adjusting 7 is the manual handle 19.
The structure is such that the regulation plate 17 is adjusted forward and backward by adjusting the plurality of screw shafts 20 attached to the back surface of the regulation plate 17 forward and backward by the rotation operation. Next, a procedure for curling the peripheral portion of the metal band 18 using the curling device C configured as described above will be explained. First, the nip roller 11 and the curling roller 1
4 are separated from the drive roller 9, and a ring-shaped metal band 18 is loosely fitted onto the drive roller 9 from the outside. Next, operate the switch 16a on the control panel 16,
By operating the pneumatic cylinder 10, the nip roller 11
is lowered to firmly sandwich the metal band 18 between the drive roller 9 and the nip roller 11. From this state, when the electric motor 5 is rotated by operating the switch 16b, the belt transmission mechanism 7, the transmission shaft 6, the gear reduction device 8, and the rotary drive shaft 2 are rotated.
Since the drive roller is rotationally driven through the metal band 18, the metal band 18 also rotates accordingly. Then, the lifting cylinder 12 is operated to move the curling roller 14 into the annular groove 1 formed on its circumferential surface.
5 is lowered to a position in front of the metal band 18, the curling cylinder 13 is operated by operating the switch 16c, and the curling roller 1 is lowered to a position in front of the metal band 18.
The annular groove 15 of No. 4 is pressed against the edge portion of the metal band 18. Then, as shown in FIG. 3, the peripheral edge portion of the metal band 18 that contacts the annular groove 15 is gradually curved inward along the rounded surface of the annular groove 15, resulting in a beautiful curling process. be. In this way, the metal band 18 whose peripheral edge portion has been curled inward is reinforced at the curled portion and kept approximately perfectly circular, so the ends can be welded together at other locations to create an endless metal band 18. Even the metal band 18 that is formed and delivered in a folded state can be easily and accurately fitted to the edge portion of the fiber drum. In the above embodiment, the electric motor 5, pneumatic cylinder 10, lifting cylinder 12, and curling cylinder 13 are controlled by switches 16a and 16 on the control panel 16, respectively.
Although the switches 16b and 16c are operated, it goes without saying that the switches 16a and 16c may be operated in sequence. Further, each of the above-mentioned cylinders may be of either a hydraulic type or a pneumatic type, and it goes without saying that these cylinders can also be of a mechanical type such as a rack and pinion gear.

【Effect of the invention】

The present invention is constructed and operates as described above, and has the following effects. That is, the metal band curling device of the present invention rotates an annular metal band loosely mounted on a drive roller while being sandwiched between the drive roller and the nip roller, and the peripheral edge of the rotating metal band is rotated while being held between the drive roller and the nip roller. Since the peripheral edge of the metal band is curled by pressing the annular groove of the curling roller, there is an advantage that the peripheral edge can be curled regardless of the size of the inner diameter of the metal band. In addition, when the metal band curling device of the present invention curls the peripheral edge of the metal band, the metal band is reinforced by the curling part and the entire shape is maintained in a perfect circle. It also has the advantage that it can be fitted easily and accurately to the edge portion, and that the work efficiency can be greatly improved. In addition, the curling of the periphery of the metal band
Since it is guided by an annular groove recessed in the circumferential surface of the curling roller and formed into a beautiful curved shape, it has the advantage of being beautiful even when fitted to the end of the fiber drum, and having a high commercial value.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is an overall front view of a metal band curling device, FIG. 2 is a vertical side view thereof, and FIG. 3 is an enlarged side view of the main parts. 1...Casing, 2...Rotation drive shaft, 9...
Drive roller, 11... nip roller, 14... curling roller, 15... annular groove.

Claims (1)

[Claims] 1. A drive roller is fixed to one end of a rotary drive shaft rotatably supported by a casing, and the metal band is connected to the drive roller by making line contact with a part of an annular metal band placed on the drive roller. A nip roller is disposed above the drive roller so as to be able to move up and down, and a curling roller is placed between the drive roller and the nip roller outside of the vicinity where the drive roller and the nip roller face each other. A device for curling a metal band, characterized in that the curling roller is provided so as to be movable toward and away from the peripheral edge of a sandwiched metal band, and the curling roller has an annular curling groove having an arcuate cross section formed on the circumferential surface thereof. .