JPS6251537A - Device for preventing shifting of winding core of web winding shaft - Google Patents

Abstract

PURPOSE:To prevent a winding core from shifting in the axial direction by providing a plurality of expansion members capable of freely going up and down in such a manner as to engage a regulating ring with a winding shaft by friction. CONSTITUTION:A stopping ring 6 for a friction ring 2 is disposed on the shaft end portion to prevent shifting of a winding core. A plurality of expansion rings 7 for locking a regulating ring 5 are disposed radially in the peripheral direction of the shaft end 10. When fluid pressure supplied from a fluid pressure source is applied to a piston 9 through a passage 12, the expansion ring 7 is expanded and reduced by the up-and-down motion of the piston, and at the time of expansion, the regulating ring 5 is locked.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a core movement prevention device for a web winding shaft. The term "web" herein refers to paper, cloth, plastic film, metal foil, and other sheet materials.

For example, when winding a wide web into multiple rolls while slitting it to the required width (vertical cross-section), a cylindrical core with a length matching the slit width is fitted onto the winding shaft attached to the 9 winding machine. ” Wrap it around two sheets to make a sheet roll.

This is to prevent movement in the axial direction when the winding core fitted on the winding shaft is driven by a device used in such a case.

(Prior Art) Both ends of a hollow winding shaft are received by the shaft, and a shaft drive mechanism is attached to one end, and a compressed air supply mechanism is attached to the open L1 portion of the other end.

The driving portions protruding from various parts of the circumferential surface of the hollow shaft are pushed by the internal applied force of the shaft and frictionally drive the passive collar by rotation of the shaft. Suke is loosely attached to the passive collar.

In this case, the rotation is driven by friction between the steel balls on the outer surface of the drive part and the inner surface of the collar. The rotation of the passive collar is in this case transmitted to the winding core via the intermediate square collar. To explain in detail, inside the hollow shaft.

An air tube is passed through it, and when compressed air enters from the open end 1-1, it expands and the three-split collar extends outward. Therefore, the five-split collar tries to adhere to the inner wall of the hollow shaft, and the husband's collar tries to stick to the inner wall of the hollow shaft.
Push the drive unit screwed to the outside through the hole in the hollow shaft 1+1
1-0, that is, the air pressure inside the hollow shaft pushes the steel ball on the outer surface of the drive part towards the passive collar. Therefore, by adjusting the air pressure, the frictional driving force between the steel ball and the passive collar can be easily controlled. Then, when the air pressure inside the hollow shaft is reduced, the air tube shrinks, the five-split collar moves toward the center, and at least one of the steel balls is scraped from the passive collar. As is well known, the mutually engaging portion of the three-split collar allows the protrusion of one side to move in and out of the groove of the other side, allowing them to approach and separate from each other. Kosho 55-37
(see Publication No. 461).

(Problems to be Solved by the Invention) The above web winding shaft is particularly used in a winding machine with a slick.

When winding webs of different widths on the same shaft at the same time, the winding machine automatically generates a winding torque suitable for each divided web, allowing one winder (one-temperature precision torque control) to be performed as needed. The drive unit inside the shaft automatically slips accordingly, so the winding shaft itself can adapt to the single winding situation. However, there was one problem. In order to improve the winding quality while keeping an eye on the winding condition,
Alternatively, it is necessary to repeat driving operation-1 acceleration/deceleration, stopping, and starting. At this time, there may be unevenness in the way the tension is applied due to web winding (this is a phenomenon caused by uneven thickness of the sheet), or due to the way the load is applied due to rotational inertia.

The winding core inevitably shifts in the axial direction. As a result, there is a problem that the end surfaces of the sheet rolls become misaligned and uneven.

Against this.

No consideration was given to this in conventional web winding shafts.

It is also possible to lock the regulating ring with bolts, screws, etc., but in this case, each time the completed sheet roll is carried out, the bolts must be removed.

You will need to loosen the screws and remove it from the take-up shaft.

The operation is inefficient and requires complicated work. I made this possible with a simple touch.

(Means for Solving the Problems) Therefore, 1. The present invention provides a regulating ring for regulating the movement of the winding core in the axial direction at the end of the winding shaft. Multiple expandable and retractable members are provided so that it can be locked.

A winding core movement prevention device in a winding shaft, comprising means for expanding and contracting the expanding and contracting member.

(Function) Therefore, according to the present invention, in order to prevent the winding core from shifting in the axial direction during the winding operation using the regulating ring, the inner periphery of the regulating ring is fixed to the winding shaft. An expanding/contracting member is provided at the end of the winding shaft, which can be expanded or contracted using air pressure or a piston member, etc. to prevent the winding core from slipping.Furthermore, it is convenient for taking out the finished sheet roll product and can be operated with one touch. .

(Embodiment) Figures 1 to 6 show nine embodiments of the present invention, in which the winding shaft has a combination structure of an air expansion shaft and a friction collar, and the shaft (1) is for control. It has a built-in air tube controlled by air, which locks the friction collar by actuating it with a lug or ball, and this friction collar is equipped with a ball locking groove to securely fix the winding core. Therefore, the 9-turn core is frictionally fixed. As a result, the sheet band is wound up by rotation of the winding shaft.

As mentioned in the ``Problem to be solved'' section, this phenomenon occurs in which the winding core shifts from side to side in the axial direction.This was attempted to be prevented by regulating this with a regulating ring, and the friction The locking ring of ring (2) (
6) is provided at the shaft end.

Note that, as shown in the figure, an expansion/contraction ring (force, etc.) may be installed to lock the restriction ring (5) using this locking ring (6), but each may be provided singly. This point is
Various variations are possible using techniques well known to those skilled in the art.

Several members tM for locking the regulating ring (5) are provided radially in the circumferential direction of the shaft end (I[ll).

As shown in FIG. 2, in one embodiment, this locking member is provided with a diagonally divided expansion ring (7) and a piston (9) in accordance with the expansion and contraction ring (7).

The pistons (9) may be provided in the number necessary to expand and contract the divided one expansion/contraction ring (7), and - the expansion/contraction ring (
7) The advantage of using one or more is the second change in design. In addition, piston ring aυ.

A split expansion/contraction ring (a force ring-shaped restraining member (8) and a piston (9) are provided in the shaft end recess, and when the restriction ring (5) is not locked, there is a spring 0 that always acts to return to the home position. It is a matter of course for those skilled in the art to appropriately provide such as This may be done by the action of pressure (air, oil, water, etc.), or by mechanically operating a piston with a cam or fluid pressure as shown in Fig. It goes without saying that each expansion/contraction ring (7) divided by Q3 may be expanded or contracted in the circumferential direction.

In the embodiment shown in FIGS. 1 and 2, fluid pressure from a fluid pressure source (not shown) is applied to the piston (9) through the passage f12.

By moving up and down, the expansion/contraction ring (7) expands and contracts, and this expansion locks the regulation ring (5).

Further, in the embodiment shown in FIGS. 3 and 4, the pressing member α3, which has a conical portion at its tip, is actuated by the action of a cam or a fluid pressure source (not shown).

By moving the piston (9) downward by -1 unit, the expansion and contraction ring (force expands and contracts, and when this expansion occurs, the control ring (5)
This locks the inner circumference of the

The present invention has been described based on a few examples.9
The winding shaft may be not only an air expansion shaft but also a solid shaft, or may be a shaft such as that disclosed in Japanese Utility Model Application Publication No. 57-41859. It goes without saying that it can be changed and applied as appropriate depending on technology, and that each component can be selectively combined to the extent that it can be replaced.
Generally, paper is used, and expansion rings are made of metal;
It can vary widely depending on its use.

(Effects of the Invention) As described above, according to the present invention, the regulation ring can be locked with one touch.

Because it can be released, the sheet roll or winding core can be mounted and removed more quickly and reliably than conventional methods, and the operability has been significantly improved.

[Brief explanation of drawings]

Figures 1 to 4 are explanatory diagrams of the embodiments, respectively. Figure 1 is a cross-sectional view when fluid pressure is used, and Figure 2 is A of Figure 1.
-A sectional view, Figure 3 is a cross sectional view when using mechanical members, Figure 4 is a BB sectional view of Figure 3, and Figure 5 is an overall schematic diagram of the 9 winding shaft. , FIG. 6 is a sectional view taken along the line C--C in FIG. 1. l...shaft, 2...friction ring, 3...core, end...regulating ring. 6... Locking ring, 7... Expansion/contraction ring, 8... Ring-shaped restraining member. 9...Piston, 12...Fluid pressure fitting Patent applicant
Kataoka Machinery Co., Ltd. Figure 5 Procedure Supplementary Document (Method) ■, Small Case Indication 1985 Special M'r Application No. 190589 2, Title of Invention Core Moving Protection Device for Web Winding Shaft 3, Amendment person who does

Claims (1)

[Claims] A regulating ring is provided at the end of the winding shaft for regulating the movement of the winding core in the axial direction, and a plurality of expandable and retractable members are provided so that the regulating ring can be frictionally locked to the winding shaft. A winding core movement prevention device in a winding shaft, comprising means for expanding and contracting the expanding and contracting member.