JP2558469Y2 - Inner circumference folding device for packaging material - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for enclosing a coil and folding a wrapping material folded at the end face of the coil into the inner periphery of the coil.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Application Laid-Open No. 58-134825 discloses a method for folding a coil in a coil outer package. Further, Japanese Patent Application Laid-Open No. 63-63092 proposes a paper folding device equipped with an outer peripheral paper. In this process, the outer wrapping paper cut in advance according to the shape of the coil is formed into an inverted U-shape in the process of supplying to the coil, guided on the coil, and the tip is bonded to the coil with a taping device. By rotating the coil with the cradle roll R, the paper P formed in an inverted U shape is wound around the outer periphery of the coil, and at the vertical portion of the side of the paper, that is, the side surface of the coil, the folds are regularly formed by a fold forming device. While the paper is wound.

Further, Japanese Utility Model Laid-Open Publication No. 2-83203 discloses FIG. 5 as an inner peripheral folding device after wrapping a wrapping paper. In this apparatus, the coil 1 is rotated, and a plurality of rotatable folding rolls 5 are placed on the edge of the wrapping material on the end face of the coil.
10 to 10 are brought into contact with each other, and the edge folds are sequentially folded toward the inner circumferential surface of the coil from the upstream side of the rotation of the coil. In the figure, P: packaging material, P ₀ : edge folded portion, R: cradle roll.

[0004]

Since the inner diameter of the metal coil has a size range of, for example, 20 inches to 30 inches, the inner diameter of the wrapping paper becomes unstable by changing the inner diameter of the coil. SUMMARY OF THE INVENTION The present invention is to provide an inner peripheral folding device for a packaging material which can surely bend the inner circumference of the wrapping paper of the metal coil of various sizes and has an excellent packing form.

[0005]

SUMMARY OF THE INVENTION The gist of the present invention is to provide a group of folding rolls in which a plurality of folding rolls are made to be able to abut on the coil end surface, and the rotation axis directions of the folding rolls are oriented in directions different from each other by a predetermined angle. In the provided inner peripheral folding device for the coil packaging material, a rotary plate 15 locked to the drive system 11 was provided, and an arm 12 extending in the rotation direction of the rotary plate 15 was protruded from the rotary plate 15 to mount the rotary plate. A guide frame 25 is provided on a frame body 26, a slide rail 14 is provided on the guide frame 25, a slide bracket 13 that slides on the slide rail is provided, the arm is locked, and the rotating body 20 is provided on the bracket. A folding roll group 5, 6, 7, 8, 9 in which the folding roll 5 is axially gripped and held under elasticity, and the folding roll group can be expanded and contracted by expansion and contraction of a drive system. A inner peripheral folding apparatus wood.

[0006]

[Function] The inner peripheral folding device of the present invention is set at the end of the paper folding at the end of the coil, but the outer diameter and inner diameter of the coil to be packed are input to the control device in advance.
Based on this, the inner circumference folding device approaches the inner circumference of the coil in a contracted state, and is thereafter enlarged to a predetermined inner diameter. Then, the inner circumference of the packaging material is folded while the coil is rotated and the paper is mounted on the outer periphery of the coil and the paper is folded at the end simultaneously. When the packing operation is completed, the inner peripheral folding device of the packaging material can be moved to a predetermined retracted position.

The expansion / contraction mechanism of the inner peripheral folding roll is operated by a rotary plate and an arm on the actuator, the inner peripheral folding roll is held on a slide bracket, and a radial slide rail is provided on the slide bracket. Since the position of the circumferential folding roll is fixed, stable inner circumferential folding can be performed.

[0008]

1 is an overall perspective view of the present invention, FIGS. 2 and 3 are explanatory views of the operation of the present invention, and FIG. 4 is a partial explanatory view. The inner peripheral folding device of the packaging material of the present invention includes a plurality of folding rolls 5,
6, 7, 8 and 9 are provided so as to be able to abut on the end face of the coil 1 and a group of folding rolls arranged so that the rotation axis directions of the folding rolls are directed in directions different from each other by a predetermined angle. That is, each folding roll can freely contact the coil side end surface, and when each folding roll abuts on the coil side end, the angle α between each folding roll rotation axis and the coil inner peripheral surface at the contact position is upstream. The rotation axes of the folding rolls are arranged so as to be directed in directions different from each other by a predetermined angle so as to gradually decrease from the side first roll toward the downstream terminal roll. Such an apparatus is disclosed in, for example, Japanese Utility Model Laid-Open No. 2-83203, but the present invention is of course not limited to this.

In the present invention, a rotating plate 15 locked to a drive system 11 (hereinafter, referred to as an actuator) is provided on a base (not shown), and an arm 12 extending in the rotating direction of the rotating plate is protruded from the rotating plate. The guide frame 25 is suspended from the frame 26 on which the rotating plate is placed, the slide rail 14 is provided on the guide frame, and the slide bracket 13 that slides on the slide rail is provided to lock the arm 12. On the other hand, the folding roll 5 is provided with a pin 18 on a rotating body 20 provided on the bracket 13.
The rotating body 20 is an elastic body (spring) 1
9 is held in tension. Accordingly, the rotating plate 15 is rotated by the expansion and contraction of the actuator 11, and the bracket 13 locked to the arm 12 slides. Therefore, the folding roll 5 which is fixed to the bracket 13 via the rotating body 20 is expanded and contracted to a desired position.

For this reason, the arm 12 has a force necessary for expanding and contracting the folding roll, and has a predetermined radius of curvature so as to satisfy the expanding and contracting stroll of the folding roll. Each of the folding rolls has the above-described expansion and contraction mechanism and forms a folding roll group. The folding rolls are collectively operated by the actuator 11 to abut against the packaging material, and the inner circumference is continuously folded by the rotation of the coil. FIG. 2 shows a state in which the folding roll group is contracted and expanded by the contraction of the actuator, and FIG. Although the drawing shows the folding rolls 5 to 9 as a group of folding rolls, the present invention is of course not limited to this. That is, in the present invention, the wrapping material that encloses the outer periphery of the coil and is folded at the end face of the coil is continuously folded into the inner periphery of the coil, but when the inner diameter of the coil changes, each inner peripheral folding roll with respect to the center of the coil is changed. It has an expansion and contraction mechanism that keeps the position constant.

Further, even if an excessive load is applied to the inner peripheral folding roll due to the looseness of the paper at the inner peripheral folding portion, the inner peripheral folding roll is given a spring pressure and escapes in a direction opposite to the inner peripheral direction of the coil. The device is protected. Therefore, while the wrapping material folded on the end face of the coil is folded into the inner circumference of the coil, the tape for the inner circumference taping is lost, and an excessive load is applied to the inner circumference folding roll due to loose paper at the inner circumference folding portion. Even if it is hung, by supporting the roll with a pin and holding a spring,
The inner circumference folding roll escapes in a direction opposite to the inner circumference of the coil, so that protection of the device is ensured.

[0012]

[Effect of the invention] Even if the inner diameter of the coil is changed by this invention,
The position of the inner circumference folding roll with respect to the coil center is reliably brought into contact with the inner diameter of the coil, and stable inner circumference folding can be performed. Also, even if an overload is applied to the inner peripheral folding roll due to looseness of the paper or the like, the roll can escape to protect the apparatus.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is an explanatory diagram of the operation of the present invention.

FIG. 3 is an explanatory diagram of another operation of the present invention.

FIG. 4 is a partial explanatory view of the present invention.

FIG. 5 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 5, 6, 7, 8, 9 Folding roll 11 Actuator 12 Arm 13 Slide bracket

Claims (1)

(57) [Scope of request for utility model registration] 1. An inner circumferential fold of a coil wrapping material provided with a plurality of fold rolls arranged so that a plurality of fold rolls can freely contact an end face of a coil and a rotation axis direction of each fold roll is directed to a direction different by a predetermined angle. In the apparatus, a rotary plate 15 locked to the drive system 11 is provided, an arm 12 extending in the rotation direction of the rotary plate 15 is protruded from the rotary plate 15, and a guide frame 25 is provided on a frame 26 on which the rotary plate is mounted. A slide rail 14 is provided on a guide frame 25, a slide bracket 13 that slides on the slide rail is provided, the arm is locked, a rotating body 20 is provided on the bracket, and a folding roll 5 is elastically mounted on the rotating body. An inner peripheral folding device for a packaging material, comprising a group of folding rolls 5, 6, 7, 8, 9 that are stopped and gripped, and the group of folding rolls can be expanded and contracted by expansion and contraction of a drive system.