JPH0314409A - Outer peripheral paper windup roll - Google Patents

Abstract

PURPOSE:To make possible to wind up an outlet peripheral paper without trouble even when the paper has the cohesive part of a tape on the outer periphery, and also make possible a strong application of a tape after the completion of packaging by a method wherein a winding-up of a packaging paper is started by drawing the paper end of an outer peripheral paper by vacuum by swelling or shrinking a buffer chamber which communicates with an air suction/removal system, and a winding-up of a second layer of the paper is performed under a shrinking condition of the buffer chamber. CONSTITUTION:A groove 32, which is provided in the axial direction of a roll 30, is covered by a rubber film 33 to form a buffer chamber 34, and fine holes 40, 41 are bored on the bottom part of the groove 32 and the rubber film 33. A winding-up of an outer peripheral paper 35 is performed while an adhesive tape 36 has an adhesive part 37 on the end part of the outer peripheral paper 35. When pressure in the roll 30 is reduced, the buffer chamber 34 shrinks, and under this condition, the paper 35 equipped with the tape 36 is drawn by suction. At this time, the cohesive part 37 is drawn by suction in the groove with a space and does not come into contact with the outer peripheral paper to be a second layer, and the roll winds up the paper by the self rotation. In order to place the outer peripheral paper 35 on a metal coil C, the roll 30 is revolved around the coil while rotating on its own axis. After winding the paper up to the rear end, the pressure in the roll is increased, and the buffer chamber 34 is made to swell to press down the tape 36.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a peripheral paper winding roll for packaging metal coils.

(Prior Art) Until now, thin steel sheet coils have been packaged by wrapping a wide wrapping paper around the outer periphery and forming pleats at both ends of the coil to wrap the end face of the coil. Proposed. Furthermore, Japanese Patent Application Laid-Open No. 58-30912 proposes wrapping an outer circumferential paper around a coil hung on a horizontal support shaft.

Further, the present inventor previously proposed a peripheral paper winding roll in Japanese Utility Model Application Publication No. 1542/1981. FIG. 5 shows this main part, and grooves 17 are formed in the axial direction of the hollow cylindrical roll body 11.
A vacuum box l2 having an arc shape on one side and a small hole in the arc is disposed in the groove l7 so as to be able to rise and fall, and a bar l5 having a driving source is placed in the hollow of the roll body. horizontally installed to link the vacuum box L2 and the bar l5;
4, and the link is pivoted to the base 25 with a fulcrum pin.

Therefore, the peripheral paper S can be supplied at the raised position of the vacuum box. The outer surface of the paper edge S-2 of the outer paper S attracts the outer paper by the reduced pressure of the vacuum box with the adhesive surface, and winding of the outer paper is started. When the outer paper reaches 2@months, the cylinder is opened. The vacuum box is caused to sink into the groove.

The vacuum box fits into the link and is housed within the depth d of the groove using the elongated hole as a guide, so the second circumference paper is placed at the paper edge S-
The outer paper can be wound up to a desired length without directly touching the adhesive of No. 2.

(Problems to be Solved by the Invention) The present invention provides a paper winding roll that receives from a supply device a wrapping paper for the outer periphery of a coil pasted on the edge of the paper and whose length has been measured in advance, and then performs a wrapping operation.

(Means for Solving the Problems) The gist of the present invention is to form a hollow cylindrical roll in the axial direction, to form a buffer chamber by covering the groove with an elastic thin film, and to form a buffer chamber between the elastic thin film and the full bottom. This is a paper winding roll with a periphery in which pores are provided in the roll, the end of the roll is connected to an air suction system, and a buffer chamber can be expanded and contracted by the action of the suction and exhaust system.

The present invention will be explained below with reference to the drawings.

The outer paper winding roll of the present invention is a hollow cylindrical body, and has a length at least equal to the width of the outer paper attached to the metal coil.

It is hollow and communicates with an intake and exhaust system (not shown).

The roll 3RO is preferably covered with a sponge body 3L, but is not particularly limited thereto. lM32 in the axial direction of the roll 30
The groove 32 is hermetically covered with an elastic l' membrane, for example a rubber membrane 33, to form a buffer 34.

Although pores 40 and 41 are perforated in the bottom of the groove 32 and the rubber membrane 33, the number of pores 40 provided in the bottom of the groove 32 is smaller than the number of pores 41 of the rubber membrane 33 to form a buffer chamber. 34
Guarantees expansion and contraction. According to experiments, the buffer chamber 34 was
The expansion and contraction of is auto/+E.

Further, the roll 30 may be made of metal or non-metal. Full 32 bites
The hole 40 may be punched in the roll 30, or may be formed by '/+'l4
0 may be cut out and a wire mesh-like material may be attached separately.

The structure of the present invention is as described above, and the operation will be explained next.

When winding up the outer paper 35, an adhesive tape 36 having an adhesive portion 37 is attached to the end of the outer paper 35 (FIG. 4C). In other words, when the outer circumferential paper is rolled up, the key is to prevent the adhesive part of the tape from sticking to the outer circumferential paper of the second spine even if it is on the outside. It is essential that it also has the effect of suppressing the situation.

In the present invention, when the pressure inside the roll is reduced, the buffer chamber contracts, and the tape-attached paper is sucked into the buffer chamber. At this time, the adhesive part of the tape creates a space inside and is sucked, so the roll rotates and winds up the paper without coming into contact with the outer paper at the second winding opening (Figure 4a).

Next, in order to wrap the outer paper 35 around the metal coil C, the roll is rotated and revolved around the coil. After winding the paper to the rear end, the inside of the roll is pressurized to expand the buffer chamber and press the tape, making the attachment strong (Fig. 4b).

(Effects of the Invention) The outer paper-filled reroll of the present invention has a buffer chamber that is connected to the air intake and exhaust system {-1, and as the buffer chamber expands and contracts, the end of the outer paper is vacuum-suctioned and winding is started. However, since the second round of winding is performed under pressure while the buffer chamber is in a contracted state, there is no problem with winding even if the paper has an adhesive portion of the tape on the outer periphery.

Furthermore, since the tape is applied while the buffer chamber is inflated after the packaging is completed, the tape can be firmly applied.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the present invention, Fig. 2 is a partial plan view, Fig. 3 is a plan view of the elastic thin film, and Fig. 4 (a), (b), (c).
) is an explanatory diagram of the operation, and FIGS. 5(a) and 5(b) are explanatory diagrams of a conventional example. 30: Roll 31・Sponge body 32: Groove 33. Rubber membrane 34: Buffer room agent Tatsuo Chanoki, patent attorney Figure 1 Figure $2 Figure 5 (0.) ('b)

Claims (1)

[Claims] A groove is formed in the axial direction of a hollow cylindrical roll, the groove is covered with an elastic thin film to form a buffer chamber, a pore is provided in the elastic thin film and the bottom of the groove, and the end of the roll shaft is connected to an intake and exhaust system. A peripheral paper winding roll with a buffer chamber that can be expanded and contracted by the action of the air intake and exhaust system.