JPH0725521A - Paper-winding shaft constituting part and paper-winding shaft - Google Patents

Abstract

PURPOSE:To provide a paper-winding shaft constituting member which is easily conformed with the diversification of winding diameter such as sheet or film, and can constitute a winding shaft with a small diameter. CONSTITUTION:A recessed part 6 is formed on the circumferential surface of a thick cylindrical member 5, and an elastic partitioning plate 10 is laid over in the recessed part 6 to constitute a pressure chamber 12 in the recessed part. A rug plate 14 supported by the elastic partitioning plate 10 is housed in the outside of the recessed part in such a manner as to be capable of protruding and recessing, and a passage for pressurized fluid communicating with the pressure chamber 12 is also provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding shaft component and a winding shaft used when winding a sheet, a film or the like.

[0002]

2. Description of the Related Art Conventionally, as a component of a winding shaft used for winding a sheet, a film or the like, a rubber tire-like member is fitted in a tubular member, and a pressurized fluid ( There is known a structure in which pressurized air is introduced to expand a rubber tire-shaped member and press-engage it with a paper tube or the like for winding a sheet, a film, or the like (for example, Japanese Patent Laid-Open No. Hei 5).
-105286).

There is also known a structure in which an air cylinder structure is formed in a radial direction in a tubular member, and a lug plate is projected and retracted through the air cylinder to be brought into pressure contact engagement with a paper tube or the like. (For example, Japanese Utility Model Laid-Open No. 62-83043).

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the take-up shaft component using the rubber tire-like member, it is necessary to mold the rubber tire-like member in correspondence with the inner diameter of the paper tube or the like which is press-contacted. When the number of such noises becomes various, it is necessary to mold a rubber tire-shaped member accordingly, and there is a problem that it is difficult to cope with the diversification of the diameter.

Further, since the take-up shaft component which constitutes the air cylinder structure requires a coil spring or the like for returning the projected lug plate, the spine (the direction in which the lug plate is projected or retracted,
That is, since the cylindrical member has a high radial direction and has a complicated structure, it is difficult to manufacture a component having a small diameter (200 φ or less).

[0006]

The present invention has been made in view of the problems as described above, and it is easy to cope with the diversification of the winding diameter of a sheet, a film, etc., and a winding shaft having a small diameter is provided. The object is to provide a configurable winding shaft component.

In the winding shaft component of the present invention which achieves the above object, a recess is formed in the peripheral surface of a thick-walled cylindrical member, and an elastic partition plate is stretched in the recess to apply pressure to the inside of the recess. A chamber is configured, a lug plate supported by the elastic partition plate is accommodated so as to be capable of projecting and retracting to the outside of the recess, and a flow passage for a pressurized fluid communicating with the pressure chamber is provided. I am trying.

The elastic partition plate can be formed by superposing a spring plate and a rubber diaphragm, but it may be formed of a single member such as a metal diaphragm having elasticity and airtightness. it can.

A plurality of recesses may be formed along the peripheral surface of the thick-walled cylindrical member, and the pressure chambers of the recesses may communicate with each other.

The winding shaft component as described above may be attached to the drive shaft to form one winding shaft, or a plurality of winding shaft components may be arranged in parallel or closely spaced to form a winding shaft. .

[0011]

According to the present invention, since the lug plate is housed in the recess so that it can be projected and retracted, it is easy to cope with the diversification of the winding diameter.

Further, since the lug plate housed in the recess is supported by the elastic partition plate, it is possible to urge the lug plate in the retracting direction by the partition plate, and the height of the mechanism for projecting and retracting the lug plate can be lowered. It is possible to manufacture winding shaft components having a small diameter.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in FIGS.

In FIG. 1, reference numeral 1 is a take-up shaft component, 2 is a drive shaft, and a mounting metal fitting 4 provided at one end of the take-up shaft component 1 via a flange 3 is fitted and tightened on the drive shaft 2. The two are integrated to form a winding shaft.

The winding shaft component 1 has an inner diameter of the drive shaft 2.
Of the thick cylindrical member 5 whose outer diameter is substantially equal to the outer diameter of the thick cylindrical member 5 and is slightly smaller than the winding diameter A. Plane rectangular recesses 6 are formed at four locations, and a resilient partition plate 10 formed by superimposing a metal spring plate 8 and a rubber diaphragm 9 on a circular annular step 7 formed inside each recess 6 is a screw. The concave portion 6 is stretched by 11, and the inside of the elastic partition plate 10 is divided into the pressure chamber 12 and the outside thereof is divided into the lug plate accommodating chamber 13.

A rectangular lug plate 14 having a convex arc shape on the outside is fitted in the lug plate accommodating chamber 13 so that the lug plate accommodating chamber 13 can project and retract from the recess 6. The lug plate 14 is provided with a screw 17 on a receiving plate 16 provided at a central portion of the elastic partition plate 10 via a pressing plate 15.
It is fixed by and is supported by the elastic partition plate 10.

Each pressure chamber 1 formed inside the recess 6
2 communicates with a flow passage 18 formed in the thick cylindrical member 5 as shown in FIG. 2. One flow passage 18 communicates with a flow passage 20 which communicates with an injection valve 19 provided on the flange 3. is doing. If the thick-walled cylindrical member has a large diameter, a cavity is formed inside, and the flow passage 1 is formed by tube piping.
8 and 20 may be configured.

In the winding shaft of the above embodiment, the injection valve 19
When pressurized air is injected into the pressure chamber 12 through the flow passages 18 and 20, the elastic partition plate 10 receives the pressure of the pressurized air and is deformed so as to bulge outward and is supported by the elastic partition plate 10. The lug plate 14 protrudes to the outside as shown by the chain line in FIG. The convex arc surface of the lug plate 14 has a diameter of the winding diameter A, and is pressed into engagement with the inner side surface of the paper tube or other winding tubes. Said resilient partition plate 10, the pressurized air 15cm ² of effective area for receiving the pressure of the pressure of the pressurized air when the 6 kg / cm ^2, it is possible to exert a force of one lug plate 14 per 90 kgf.

When the injection valve 19 is opened to release the pressurized air injected into the pressure chamber 12, the elastic partition plate 10 returns to a flat state by the restoring force of the spring plate 8, so that the lug plate 14 is accommodated in the lug plate. Immerse yourself in chamber 13. Since the lug plate 14 and the take-up tube are not engaged with each other, the take-up product can be removed from the take-up shaft.

When the winding diameter A is changed, it can be easily dealt with by changing the thick-walled cylindrical member 5. If the recesses 6 formed in the peripheral surface of the thick-walled cylindrical member 5 have the same size, members such as the elastic partition plate 10 and the lug plate 14 housed in the recesses 6 may be common members. It is possible.

Further, since the mechanism for immersing the lug plate 14 is constituted by the elastic partition plate 10 without using the piston structure or the coil spring, the structural portion for the lug plate 14 to be retracted and retracted. It can have a low structure. Therefore, even if the diameter of the thick-walled cylindrical member 5 becomes small and the thick-walled portion becomes thin, the lug plate 14 and its protruding / withdrawing mechanism can be provided, and the winding shaft having a small diameter should have the same structure. Is something that can be done.

In the above embodiment, one winding shaft component 1 is fixed to the drive shaft 2, but a plurality of winding shaft components 1 can be arranged in parallel with the drive shaft 2.

FIG. 5 shows a take-up shaft for a long paper tube 21. Two take-up shaft components 1 similar to those of the above-mentioned embodiment are fixed to the drive shaft 2 with a space therebetween. In this case, the flange 3 is not provided. In the figure, reference numeral 22 denotes a flow passage 20 for one winding shaft component 1 and a flow passage 2 for the other winding shaft component 1.
It is a connecting tube provided between 0.

FIG. 6 shows a winding shaft in which films narrowly cut (slitting) are wound in parallel, and the driving shaft 2 is provided with a winding shaft component 1 similar to that of the above embodiment. A plurality of these are closely arranged in parallel. In the figure, reference numeral 23 denotes a take-out disc used when taking out a wound product, and a bearing 24 is provided in the radial direction so that the bearing 24 can travel on the drive shaft 2. In the case of this winding shaft, if the drive shaft 2 is a shaft provided with the tube 25 and the friction pad 26 along the axial direction as shown in FIG. 7, the winding shaft components 1 arranged in parallel are individually
It is possible to slip independently and to absorb the fluctuation of the winding tension.

[0025]

As described above, according to the present invention, it is possible to cope with diversification of the winding diameter and to construct a winding shaft having a small diameter.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an embodiment of the present invention.

FIG. 2 is a side view in which a part of the embodiment is similarly cut away.

FIG. 3 is a sectional view of a flow passage portion of the embodiment as well.

4A and 4B are views of components of the embodiment, FIG. 4A is a plan view of a spring plate, and FIG. 4B is a plan view of a diaphragm.

FIG. 5 is a front view of another embodiment of the present invention.

FIG. 6 is a partially cutaway front view of another embodiment of the present invention.

FIG. 7 is a sectional view of a drive shaft of another embodiment of the present invention.

[Explanation of symbols]

 1 Winding Shaft Components 2 Drive Shaft 5 Thick Cylindrical Member 6 Recess 8 Spring Plate 9 Diaphragm 10 Resilient Partition Plate 12 Pressure Chamber 13 Lug Plate Storage Chamber 14 Lug Plate 15 Holding Plate 16 Receiving Plate 18, 20 Flow Path 19 Injection valve 22 Connection tube

Claims (4)

[Claims] 1. A thick cylindrical member is provided with a recess in a peripheral surface thereof, and a resilient partition plate is stretched in the recess to form a pressure chamber inside the recess, and the resilient partition plate supports the pressure chamber. The take-up shaft component is characterized in that the lug plate is housed so as to be capable of projecting and retracting outside the recess, and a flow passage for a pressurized fluid communicating with the pressure chamber is provided. 2. The winding shaft component according to claim 1, wherein the elastic partition plate is formed by superposing a spring plate and a rubber diaphragm. 3. The recess is formed in plural along the peripheral surface of the thick-walled cylindrical member, and the pressure chambers of the recesses communicate with each other.
Take-up shaft components described. 4. A take-up shaft comprising a plurality of take-up shaft constituent parts according to claim 1, which are arranged in parallel with each other at a distance or in close contact with a drive shaft.