JPS6374851A - Wind-up core flxing device - Google Patents

Abstract

PURPOSE:To prevent damage to the inner peripheral surface of a wind-up core and generation of chips so as to make it possible to fix a plastic or steel pipe core, by fixing the wind-up core with the use of the wedging action between the tapered surface of a taper cone and a plurality of sliders around the cone and the resiliency of a resilient member. CONSTITUTION:When a left-side wind-up cone 3L is manually pushed rightward, a sleeve 4L slides along a wind-up shaft 6, and since the core 3L and the sleeve 4L axially move, corners 3L, 3R may be inserted into a core C. Thereafter, one end face of the core C makes into contact with stoppers 14 on sliders 8 which are therefore pushed by the core C, and therefore, the sliders 8 slide along the tapered surface 9 so as to axially move. Accordingly, resilient members 15 in the sliders 8 are pressed against the inner peripheral surface of the core C so that the core C is subjected to the wedging action between the tapered surface 9 and the sliders 8, resulting the movement of the core C toward a cover 13, and therefore, the core C makes into contact with the cover 13 while the resilient members 15 are compressed between the sliders 8 and the core C so as to be deformed, thereby it is possible to fix the core C to the sliders 8 and the cones 3L, 3R.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a winding machine for winding a web material such as paper onto a winding core, and in particular to a winding machine for securing the winding core to a winding cone. This invention relates to a winding core fixing device.

For example, a so-called slitter is generally used which shreds a web material such as paper into a plurality of strips and winds them around a winding core. In this type of slitter, the winding core is usually fixed to a pair of winding cones and rotated integrally with the winding cones. FIG. 7 shows a conventional winding core fixing device. This device uses a winding core (C) consisting of a paper tube.
A pair of left and right take-up cones (1)
The winding core (C) is arranged between each winding cone (1). The winding cone (1) has a plurality of knives (2) arranged at angular intervals around the winding cone (1) and at a constant distance from the outer circumferential surface of the winding cone (1). It protrudes by a certain amount, is arranged so as to be inclined at a certain angle with respect to the axial direction, and is fixed. Therefore, when the winding cone (1) is moved axially, the knife (2) of each winding cone (1)
) bites into the inner peripheral surface of the winding core (C), and the winding core (C
) can be fixed to the knife (2) and to the winding cone (1). Therefore, the winding core (C) can be rotated integrally with the winding cone (1), and the shredded web material can be wound onto the winding core (C).

However, this device had a problem with the knife (2) biting into it. Not only is the inner circumferential surface of the winding core (C) damaged, but it is also unavoidable that chips are produced. Furthermore, this device is only capable of fixing a winding core (C) consisting of a paper tube. For winding cores such as iron pipes and plastic pipes, the knife (2) does not bite into the inner peripheral surface of the winding core and cannot be fixed.

OBJECTS OF THE INVENTION Accordingly, the present invention provides an improved winding core fixing device, which prevents damage to the inner circumferential surface of the winding core and prevents its chips from being generated, and which is applicable not only to paper tubes but also to paper tubes. Even winding cores such as iron pipes and plastic pipes are made for the purpose of accurately fixing them. - Structure of the Invention This invention arranges a plurality of sliders at angular intervals around a winding cone, each slider is slidably engaged with a tapered surface of the winding cone, and the outer circumferential surface of each slider is A stopper is formed for bringing the end surface of the winding core into contact. Furthermore, an elastic body for pressing against the inner circumferential surface of the winding core is protruded from the outer circumferential surface of each slider. The winding core is fixed by a wedge action between the tapered surface of the winding cone and the slider, and by the elasticity of the elastic body.

Description of examples The present invention will be described in detail below.

FIG. 1 shows an embodiment of the invention. This device is for fixing the winding core (C) of the slitter, and has a pair of left and right winding cones (3L) and (3R).
L) and (3R) are supported by the bearings (5) of the sleeves (4L) and (4R) and are rotatably guided, and the sleeves (4L) and (4R) are fitted to the winding shaft (6). There is.

In addition, among the respective winding cones (3L) and (3R), the right winding cone (3R) has a gear (7), and the gear (7>) is fixed to the end face of the winding cone (3R) and transmits power. For the left take-up cone (3L), its sleeve (4L) can be slid along the take-up shaft (6), moving the take-up cone (3L) in the axial direction. can be done.

Furthermore, the device has a plurality of sliders (8) arranged at angular intervals around the winding cones (3L), (3R) and arranged at angular intervals around the winding cones (3L), (3R).
R) is slidably engaged with the tapered surface (9). In this embodiment, as shown in FIGS. 2 to 6, each winding cone (3L), (3R) is provided with six sliders (8) and six axially tapered grooves (lO), and the slider (8) are arranged at angular intervals of 60" and are housed in each tapered groove (10).The liner (11) is fixed to the bottom surface of the tapered groove (10), and the slider (8) The winding cone (3L) is engaged with the tapered surface (9) of the liner (11) and is slidably guided.
), (3R) are covers (12), (13) on both end faces.
The slider (8> has a tapered surface (
9), move in the axial direction, and remove the cover (1).
It can be moved to positions 2) and (13).

The slider (8) includes a stopper (14) and an elastic body (15).
), and the stopper (14) is for contacting the end face of the winding core (C), has a flange shape, and is formed on the outer peripheral surface of the slider (8). The elastic body (15) is for pressing against the inner circumferential surface of the winding core (C), and protrudes by a certain amount from the outer circumferential surface of the slider (8). In this embodiment, the elastic body (15) consists of a rubber ring with a rectangular cross section, a hook is passed between each slider (8), and a winding cone (
3L) and (3R), and is fitted into the outer circumferential groove (17) of the slider (8). Further, this device has an annular spring (18), the spring (1B) is for elastically biasing the slider (8), a hook is passed between each slider (8), and a winding cone ( 3L
), (3R) and the outer circumferential groove (20) of the slider (8>).

Furthermore, the winding cones (3L) and (3R) have a plurality of lock bins (21). The lock bin (21) is for locking the slider (8) in a predetermined position, and is housed in the radial hole (22) of the winding cone (3L), (3R). Then, the lock bin (21) is elastically biased by the spring (23), and the lock bin (21) penetrates the liner (11) of the winding cone (3L), (3R) and projects into the tapered groove (lO). The slider (8) has a cam surface (24) that contacts the lock bin (21), and the lock bin (21) receives the cam action of the cam surface (24) and is inserted into the lock hole (25) of the slider (8). Ru. Furthermore, this device has an operation ring (26) and an auxiliary bin (27), the auxiliary bin (27) is for releasing the locking action of the lock bin (21), and the auxiliary bin (27) is for releasing the locking action of the locking bin (21). ) is housed in. The operating ring (26) has a cam surface (28) for operating the auxiliary bottle (27), and the cam surface (28) is formed by a protuberance (29) on the inner peripheral surface of the operating ring (26).
) is formed. As described later, the operation ring (2
6) is rotated along the outer peripheral surfaces of the winding cones (3L) and (3R) and the cover (13). Cover (13)
has a notch for passing the protuberance (29) of the operating ring (26).

In the winding core fixing device configured as described above, the winding core (C) is arranged between the winding cones (3L) and (3R). Then, when the left winding cone (3L) is manually operated and pushed to the right, the sleeve (4L) slides along the winding shaft (6), and the winding cone (3L) and sleeve ( 4L) moves in the axial direction. Therefore, each winding cone (3L), (3R) moves relatively,
A winding cone (3L), (3R) can be inserted inside the winding core (C). Winding cone (3L), (3R
), the slider (8) is elastically biased by the spring (18), and the slider (8)
is in contact with one cover (12), held in that position and inserted inside the winding core (C).

Thereafter, the end surface of the winding core (C) comes into contact with the stopper (14) of the slider (8). Therefore, the winding core (C)
The slider (8) is pushed, and the slider (8) slides along the tapered surface (9) of the liner (11) and moves in the axial direction. Therefore, the elastic body 15) of the slider (8) is pressed against the inner peripheral surface of the winding core (C), and the winding core (C) is subjected to a wedge action between the tapered surface (9) and the slider (8). Further, the slider (8) moves toward the other cover (13) and comes into contact with it, and the elastic body (
15) is compressed between the slider (8) and the winding core (C) and is elastically deformed. Therefore, the winding core (C) can be fixed to the slider (8>) and the winding cones (3L) and (3R).

Furthermore, when the slider (8) moves in the axial direction, its cam surface (24) comes into contact with the lock bin (21), and the lock bin (21) receives the cam action of the cam surface (24), causing the take-up cone (3L ), (3R) are pushed into the radial holes (22).This allows the slider (8) to move.Then, when the slider (8) moves to the cover (13) position, the spring (23) by lockbin (
21) is pushed back, and the lock bin (21) is moved to the slider (
8) into the lock hole (25). The locking bin (21) therefore locks the slider (8) and holds it in that position.

The lock bin (21) is the auxiliary bin (2) in the lock hole (25).
7), the auxiliary bottle (27) is pushed out and protrudes from the lock hole (25).

Therefore, after that, the gear (7) of the winding cone (3R)
When torque is transmitted to the winding core (C), the winding cone (
It is rotated integrally with the winding shaft (6L) and (3R).
) is rotated around the Therefore, a web material such as paper can be shredded into a plurality of strips, which can be wound onto the winding core (C).

After the web material has been wound, the web material and the winding core (
C) from the winding cones (3L), (3R), move the operating ring (26) to each winding cone (3L), (3R).
), press it from the outer peripheral edge of the cover (13), and push it onto the outer peripheral surfaces of the winding cones (3L) and (3R). The protuberance (29) on the operating ring (26) is aligned with the notch in the cover (13) and pushed through the notch. Thereafter, the operating ring (26) is rotated along the outer peripheral surfaces of the winding cones (3L) and (3R) and the cover (13) until it reaches a predetermined angular position, and the cam surface of the operating ring (26) (28) is the auxiliary bin (2
7), the auxiliary bottle (27) receives the cam action of the cam surface (28), and is pushed into the lock hole (25) of the slider (8). Therefore, the lock bin (21) is pushed out from the lock hole (25), and the winding cone (3L), (3
R) into the radial hole (22). This releases the locking action of the lock bin (21). Next, when the operating ring (26) combined with the left winding cone (3L) is pulled to the left, the operating ring (26)
The bump (29) is the cover (13) of the winding cone (3L)
in contact with the winding cone (3L) and sleeve (4L)
moves in the axial direction, moves to the left, and each winding cone (3
L) and (3R) move relatively. Therefore, the slider (8) of the winding cone (3L), (3R) is pulled by the winding core (C), and the slider (8) is pulled by the liner (
11) and moves in the axial direction. Therefore, the elastic body (15) of the slider (8)
) separates from the inner peripheral surface of the winding core (C), and the winding core (C)
are slider (8) and winding cone (3L), (3R)
removed from. Thereafter, the slider (8) is elastically biased by the spring (18), and the slider (8) moves to the position of the cover (12).

After that, the operating ring (26) is rotated again so that its protuberance (29) matches the notch in the cover (13), and the operating ring (26) can be removed from each winding cone (3L) and (3R). can.

Therefore, in the case of this device, the elastic body (15) of the slider (8) is simply pressed against the inner circumferential surface of the winding core (C). Unlike the conventional method, there is no need to bite the knife (2) into the inner peripheral surface of the winding core (C). Therefore, the inner circumferential surface of the winding core (C) is not damaged and no chips are generated. In addition, the winding core (
C) can be fixed, and this can be fixed firmly. Moreover, even if there is variation in the diameter of the winding core (C), the elastic body (15) is elastically deformed accordingly, and the winding core (C) can be accurately fixed. On top of that,
It is possible to securely fix the winding core (C) not only in paper tubes but also in iron tubes, plastic tubes, and the like.

In this embodiment, the winding core fixing device of the type in which the left winding cone (3L) is manually operated was explained, but each winding cone (3L), (
3R) may be moved. In this case, after fixing the winding core (C), each winding cone (
Lock the take-up cones (3L) and (3R), and
3R) can be prevented from moving in the axial direction.

Therefore, it is not necessarily necessary to lock the sliders (8) of the winding cones (3L) and (3R), and the lock bin (
21), there is no need to provide an auxiliary bin (27) and an operating ring (26).

As described in detail, in the present invention, the winding core (C) can be fixed by the wedge action of the tapered surface (9) and the slider (8) and the elasticity of the elastic body (15). Therefore, the winding core (C) can be firmly fixed, and there is no need to bite the conventional knife (2) into the inner peripheral surface of the winding core (C). Therefore, the inner circumferential surface of the winding core (C) is not damaged and no chips are generated. Moreover, even if there is variation in the diameter of the winding core (C), it can be fixed accurately. It is possible to securely fix the winding core (C) not only in paper tubes but also in iron tubes, plastic tubes, etc., and achieve the intended purpose.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the invention, and FIG.
A sectional view of the take-up cone and slider shown in the figure,
4 is a front view of FIG. 2, FIG. 5 is a back view of FIG. 2, FIG. 6 is a sectional view of the winding cone of FIG. 2, and FIG.
The figure is an explanatory diagram of a conventional winding core fixing device. (C)・・・・・・・・・・・・・・・・・・・・・
... Winding core (3L), (3R) ...
・・・・・・Take-up cone (8)・・・・・・・・・・・・
・・・・・・・・・・・・・・・Slider (9)...
・・・・・・・・・・・・・・・・・・・・・ Theba surface (14)・・・・・・・・・・・・・・・・・・
・・・・・・・・・Stopper (15)・・・・・・・・・
・・・・・・・・・・・・・・・・・・Elastic Body Patent Applicant Nishimura Seisakusho Co., Ltd. Representative Kenji Arata (1 other person) 6th B! 3

Claims (1)

[Claims] A plurality of sliders are arranged at angular intervals around the winding cone, each of the sliders is slidably engaged with the tapered surface of the winding cone, and an end surface of the winding core is arranged on the outer peripheral surface of each slider. A stopper is formed for bringing the sliders into contact with each other, and an elastic body for pressing against the inner circumferential surface of the winding core is protruded from the outer circumferential surface of each of the sliders, and the wedge action between the tapered surface and the slider and the elasticity of the elastic body A winding core fixing device, characterized in that the winding core is fixed.