JP2678893B2 - Fixing device for the winding end of long sheets - 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 fixing an end of a long sheet or the like to a winding core (so-called core).

[0002]

2. Description of the Related Art When winding a continuous long sheet such as various kinds of paper, films, sheets on a winding core, a winding end is provided in order to eliminate slippage between the winding core and the long sheet. It is necessary to fix the part to the core. Although a chuck is provided on the winding core shaft that is inserted into the winding core, there is no example of fixing the winding end portion to the winding core, and conventionally, the winding end portion is wound with an adhesive tape or an adhesive. It was fixed to.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and the problem is to use an adhesive tape or an adhesive when winding a long sheet around a winding core. Instead, it is to be able to fix the winding end of long sheets to the core.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention inserts a pair of core shafts 11 and 12 into both ends of a core 10 for winding long sheets, and at least one of the cores. in winding mechanism having a chuck 13 in the axial, wound with the winding core 10 by the winding end portion of the long sheets, a material having an elastic bending resistance member 14 for enlarging the winding diameter, chuck 13 To
Since the resistance member 14 is formed so as to be elastically deformable, it is formed in the shape of a strip plate that is shorter or longer than the length of the provided core shaft. A small gap g is provided between the two, and a means for attaching to the core shaft provided with the chuck 13 at the outer end of the resistance member 14 is provided.

[0005]

Since at least one (12 in the embodiment) of the core shafts 11 and 12 supporting the core 10 has the chuck 13, when the core shafts 11 and 12 are rotationally driven, the rotational force is transmitted to the core 10. It can be rotated.

On the other hand, in the long sheets, when the winding end portion is wound around the winding core 10, the resistance member 14 is also rolled in at the same time. Therefore, the winding diameter is partially enlarged at the location of the resistance member 14 (FIG. 2 (c)), and a long sheet is caught on the corner portion 15 of the resistance member 14 (FIG. 4 (b)) to cause friction. Since the number of sheets is increased, slippage between the winding core 10 and the winding end portion is eliminated, and the long sheets rotate integrally with the winding shaft having the winding core 10 and the chuck 13.

As the winding progresses further and the winding diameter increases, the torque applied to the core 10 also increases, but the torque acts to tighten the resistance member 14, so the core 10
Resists slippage between the long sheet and long sheets. Therefore, this device works effectively not only at the beginning of winding but also during the winding process.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a winding machine embodying the present invention.
Both ends of the core 10 are supported by the two. The pair of left and right core shafts 11 and 12 are fitted in the end opening of the core 10, and one of the core shafts 12 (right side in FIG. 1) is provided with a chuck 13 to be described later. It is possible to chuck and transmit the rotational force without loss (Fig. 2
(B)).

The core shaft 12 provided with the chuck 13
Further, a resistance member 14 for winding the long sheet S together with the winding core 10 and enlarging the winding diameter is provided. The resistance member 14 is formed in a strip plate shape with a material having bending elasticity. Resistance member 14
Is not limited to one. For example, two or more can be provided around the axis. FIG. 4A shows an example in which the three resistance members 14 are equiangularly spaced, but this also improves the balance.

The resistance member 14 is formed to be shorter or longer than the length of the core shaft 12 having the chuck 13 which is inserted into the core 10. This is because it is difficult to insert the winding core into the winding shaft 12 when the tip ends of the winding shaft 12 and the resistance member 14 coincide with each other. However, when the winding shaft 10 is long, the resistance becomes too large when the winding core 10 is pulled out. There is also. Therefore, it is better to make the length of the resistance member 14 shorter than that of the winding shaft 12.

The specific structure of the chuck 13 can be arbitrarily selected. For example, the winding core shaft 1 shown in FIG.
A plurality of movable chuck pieces 19 are formed by dividing 2 into slit grooves 18 extending from the tip toward the other end, and the inclined outer surface 22 that engages with the inclined inner surface 21 formed on the inner surface of the chuck piece is moved in the axial direction. A chuck 13 that spreads the chuck piece 17 outward can be adopted. In that case, the moving member 23 having the inclined outer surface 22 can be moved in the axial direction by the central shaft 24.

A cam mechanism for moving the moving member 23 in the axial direction by utilizing the rotation of the central shaft 24 about the axis is illustrated in FIG. The cam mechanism is mounted on the tip of the central shaft 24 around the orthogonal axis.
Two rotatable rotors 25 (either single or multiple) provided at intervals of 80 degrees, a cam surface 28 extending from a concave portion 26 to a convex portion 27 provided on a rotation path of the rotor 25, and a moving member 23. The movable member 23 is pushed by the spring means 31 to the trochanter 25, and has the protrusions 29a as the rotation stopping means and the concave portions 29b. According to such a cam mechanism, since the winding core 10 can be chucked by the rotational force input to the shaft end 34 of the central shaft 24, power for chucking is unnecessary. 32 is a shaper provided at the tip of the central axis, 33 is a return spring, and the chuck piece 1
Support the restoration of 9.

As shown in FIG. 1, the left and right winding shafts 1
The bearings 1 and 12 are axially supported by bearings 35 and 36 so that they can approach and separate from each other, and are driven for contact and separation by drive means 37 and 38, which are cylinder devices. 39 is a drive wheel,
Driving force is received from the motor 40 by the transmission means 41 such as a belt.

In such a device of the present invention, since the corners 15 of the resistance member 14 contact the surface of the long sheet S so as to bite into it to increase the friction, there is little winding friction and the core 10 spins idle. It is possible to preferably carry out a winding operation even on a non-woven cloth, for example, an embossed sheet having an uneven surface or a non-slip cloth having a coating. A material such as a hardened and hardened steel material is suitable for the resistance member 14.

[0015]

Since the present invention is constructed and operates as described above, when the long sheets are wound around the core 10, the resistance member 1 is attached to the core shaft 12 having the chuck 13.
4 are attached and they are wound at the same time by a long sheet, so that the reaction force of the bending elasticity of the resistance member 14 and the pulling of its corners are pulled.
There is no slip at the start of winding due to catching etc.
Is fixed , the torque of the core shaft 12 can be reliably transmitted to the long sheets, and a strong force is applied between the core 10 and the long sheets when the winding progresses and the torque increases. It can withstand force and prevent slippage, and it eliminates the need for using adhesive tape, etc.
The effect that it can be remarkably improved is exhibited.

[Brief description of the drawings]

FIG. 1 is a front view of a winding machine embodying the device of the present invention.

FIG. 2 (a) is a side view showing an embodiment of a fixing device for a winding end portion of long sheets according to the present invention. (B) Front view of the same.

FIG. 3 (a) is a vertical cross-sectional explanatory view showing the operation of the same embodiment. (B) Cross-sectional explanatory view showing the operation of the embodiment.

FIG. 4A is a front explanatory view showing another embodiment. (B) An enlarged view showing the relationship between the resistance member and the long sheets.

FIG. 5 is an enlarged explanatory view showing an example of a chuck.

Claims (4)

(57) [Claims] 1. A winding mechanism in which a pair of winding shafts 11, 12 are inserted into both ends of a winding core 10 for winding long sheets, and a chuck 13 is provided on at least one of the winding shafts. Winding core 1 by the winding end of sheets
The chuck 1 is wound together with the chuck 1 and is made of a material having bending elasticity for the resistance member 14 for enlarging the winding diameter.
Since the resistance member 14 is elastically deformable, it is formed in a strip plate shape that is shorter or longer than the length of the winding shaft provided with 3. Fixing the winding end of a long sheet characterized in that a small gap g is provided between the winding surface and the surface, and the winding shaft is provided with the chuck 13 at the outer end of the resistance member 14. apparatus. 2. The winding of long sheets according to claim 1, wherein the resistance member 14 has a structure in which a plurality of the resistance members 14 are provided at equal intervals in the circumferential direction of the winding core shaft provided with the chuck 13. End fixing device. 3. The winding of long sheets according to claim 1, wherein the resistance member 14 has a substantially rectangular cross section, and an outer corner portion 15 thereof is caught by the long sheets. End fixing device. 4. The winding end portion of the long sheet according to claim 1, wherein the resistance member 14 has a length shorter than a length of the resistance member 14 inserted into the core 10 of the core shaft having the chuck 13. Fixing device.