JPH0825692B2 - Winding core in web winding machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core for a winder, and more particularly to a core suitable for winding selvedges produced when both edges of a wide film are cut off.

[0002]

2. Description of the Related Art Ear scraps produced when both edges of a wide film are cut off are conventionally wound up on a core tube (usually paper core) or cantilevered. It is processed by winding it up on a telescopic reel.

However, when the selvage roll is formed on the core tube as in the former case, the film is separated from the core tube after the selvage roll is regenerated from the full roll. However, there is a problem in that the core tube is wasted when the ear waste is collectively discarded. When the ear scraps are wound up on a cantilever type telescopic reel like the latter, after winding, the reels must be reduced in diameter to pull out the scraps in the lateral direction, and an extra space for that is required. There was a bug I needed.

[0004]

SUMMARY OF THE INVENTION In view of such circumstances, the present invention provides a winding core which can be easily attached to and detached from a winding machine, does not require a winding core tube, and can easily remove only rolled-up ear dust. Then, it aims at solving the above-mentioned problem.

[0005]

That is, the core of the present invention which meets the above object comprises a plurality of segments in which a core cylinder is divided along the central axis, and each segment has a space in the circumferential direction. Expandable and contractible , multiple segments
The core cylinder formed by is expandable and contractible in the radial direction.
Ri, both end side of the central axis of the cylinder, each flanged sleeve is fitted slidably, yet its respective ends closer, with each flange is fixed, the sleeve with the flange, U extending toward the opening at the end of the cylinder
A U-shaped movable side handle is fixed, while a smaller U-shaped fixed side handle is fixed to each of the flanges inside the movable side handle, and each of the plurality of segments is fixed. The inside of the segment and each of the flanged sleeves are connected by a leaf spring having elastic force in the segment direction, and the proximity of the movable side handle to the fixed side handle causes an inclination angle with respect to the central axis of the leaf spring. Is characterized by a small size.

[0006]

[0007]

The core of the present invention having the above-mentioned structure is normally urged by a spring and expanded to a predetermined diameter. Roll up. When the roll is wound up as specified, it is removed from the winder, and the diameter of the core is reduced by the handle operation, and the web roll is removed from the core. The separation of the web rolls at this time is extremely easy because the winding core has a reduced diameter. Therefore, if the ear dust is wound around this core, a roll of only the ear dust can be obtained very easily, and the recycling process and the disposal process of the ear dust roll can be executed very efficiently.

Particularly, in the structure of the present invention , when the diameter of the winding core is reduced, the movable side handle and the fixed side handle are both gripped,
Operate both handles close to each other. As a result, the leaf spring is inclined at a smaller angle with respect to the central axis, and the diameter of the winding core is reduced.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a side sectional view of a core according to the present invention when the diameter is expanded, FIG. 2 is a side sectional view when the diameter is reduced, FIG. 3 is a front view when the diameter is expanded, and FIG. 4 is a front view when the diameter is reduced. is there. In these figures, (1) is the center axis of the winding core, (2) and (2 ') are flanges fixed to both ends of the center axis (1), and (3)
(3 ') is a flanged sleeve slidably fitted on the central shaft (1).

Further, (4) (4 ') ... are segments, and in this embodiment, four segments (4) (4').
Each segment core cylindrical be constituted by ...
The space between them can be expanded and contracted in the circumferential direction, which allows winding core cylinders.
Has become the scaling to obtain so that also in the radial direction. Each of the segments (4), (4 ') ... Is fixed to one side of a leaf spring (5) (5') ... Having a cross-sectional shape as shown in FIGS. ) (5 ') ... The other piece is fixed to the flange portion of the flanged sleeve (3) (3'). With the above structure, each segment (4) (4 ') ··· has a leaf spring (5) on the central axis (1).
It is pivotally connected to the floating state through (5 ').

In order to make the floating state more reliable, the compression spring (9) is fitted on the shaft (1), and the sleeves (3) and (3 ') are attached to the flange (2) by the elastic force of the spring.
It is preferable to press it against (2 ').

Further, (6) and (6 ') are movable side handles fixed to the sleeves (3) and (3'), while (7).
(7 ') is a fixed side handle fixed to the flanges (2) and (2'). Two sleeves (3) under normal conditions
(3 ') are distant from each other and each has a flange (2)
The movable side handle (6) is located close to (2 ').
The relative position between (6 ') and the fixed-side handles (7) and (7') is so set as to maintain the distance L shown in FIG. The dimension L is the length most suitable for the operator to grab by hand.

The movable side handles (6) and (6 ') and the fixed side handles (7) and (7') are U-shaped, and one side (6a) (6a ') of each handle. (7a) (7
a ') are arranged in parallel, and the movable side handle (6) is also provided.
The fixing side legs (6b) (6b ') of the (6') to the sleeves (3) (3 ') are located in the outer peripheral grooves (2a) (2a') of the fixing flanges (2) (2 '). The movable side handles (6) (6 ') and the fixed side handle (7) are slidable.
Relative rotation with (7 ') is blocked.

[0014] Therefore, now, grab the fixed side handle movable handle (6) (7) at the hand of man, as shown in FIG. 2, the spacing of the fixed handle and variable dynamic side handle's lead, the dimension L Is shown in FIG.
It becomes L'as shown in. That is, in other words, the sleeve (3) is moved to the position away from the flange (2) toward the widthwise center of the winding core. Therefore, the leaf spring (5) is bent so that the inclination angle with respect to the central axis (1) becomes small, and the segment (4) is moved toward the central axis (1). The movement also affects the leaf spring (5 ') of the opposite sleeve (3'), and the same movement also occurs in each segment (4 ') ..., As a result, as shown in FIG. , The diameter of the winding core will be reduced.

Next, the attachment / detachment of the winding core having the above structure to the winding machine will be described with reference to FIG. In the figure, (C) and (C ') indicate core chucks whose ends are chamfered into a truncated cone shape, which are mounted on a known chuck mounting device pivotally mounted on the machine frame (F). As described above, in the core in the normal state, the segments (4), (4 '), ... Spread outward through the leaf springs (5), (5') ,. ing.

With respect to the core in the expanded state, the chucks (C) and (C ') are closed by the chuck opening and closing device (that is, the direction in which the distance between the chucks (C) and (C') is narrowed). When the chucks (C) and (C ') are guided to the end by the truncated cone-shaped chamfer, the chucks (C) and (C') enter into the core and pinch the core. At this point of time, the segments (4), (4 '), ... Are supported by the cylindrical portions (C-1) (C'-1) of the chucks (C) (C') and are wound up. The diameter reduction due to the tightening force that occurs with the progress is prevented. Also, chuck (C)
A key (8) is fixed to at least one side of (C '), engages with a notch provided in the segment (4), and the winding torque introduced to one end of the chuck (4) is transmitted. It has become so.

Thus, the winding core is rotated and the winding roll is formed on the winding core. After the winding roll is formed, the chucks (C) and (C ') are opened to open the winding roll. It can be easily taken out of the machine together with the winding core.
Then, place the taken out roll upside down on the table,
When the movable side handle (6) and the fixed side handle (7) of the winding core are grasped, the diameter of the winding core is reduced as described above, so that the winding core can be easily separated from the winding roll.

The above handles (6) and (7) can exert their functions if they are provided on either side of the winding core. In that case, when the winding roll is inverted, the vertical direction of the roll is changed. You need to make sure. In the embodiment, handles (6) and (7) are provided on both sides in order to eliminate such troublesomeness.

[0019]

As described above, according to the present invention, the winding core cylinder is composed of a plurality of segments divided along the central axis, and the predetermined expanded diameter of the cylinder is locked by the central axis. While being held, since it is the core of the web winder that is provided in the end opening of the cylinder and has the diameter of the cylinder reduced by the handle that tightens the spring, it is attached to the winder and wound. After forming the take-up roll, it is possible to easily separate only the take-up roll from the winding core simply by removing the take-up roll from the winder and performing a handle operation.

Therefore, when the selvage roll is formed on the winding core according to the present invention, the troublesome separation work of the winding roll and the core tube, which is the case when the winding core is wound on the conventional core tube, can be performed. It is omitted, or the waste of collectively disposing with the core tube is eliminated. Furthermore, the space for pulling out the selvage roll is not required as compared with the case of winding up on the conventional cantilever type telescopic reel. That is, a very efficient and economical ear dust winding operation is achieved.

Particularly, in the core of the present invention, the handle is wound.
It is housed inside the core cylinder, and the leaf spring is
Since it is installed between the sleeve with the lunge, the winding
When wound as a roll, it is smooth without any hindrance.
It is possible to take up various windings and at the same time
It can be easily turned upside down or left or right
The operability is also good and practical.

[Brief description of drawings]

FIG. 1 is a side sectional view of a winding core in a winding machine according to the present invention when an expanded diameter is used.

FIG. 2 is a side sectional view of the winding core according to the present invention when the winding core is reduced in diameter.

FIG. 3 is a front view of the winding core of the winding machine according to the present invention when the winding diameter is expanded.

FIG. 4 is a front view of the winding core of the winding machine according to the present invention when the diameter is reduced.

FIG. 5 is an explanatory diagram of the winding core of the winding machine according to the present invention when the winding machine is mounted.

[Explanation of symbols]

 (1) Center shaft (2) (2 ') Flange (3) (3') Flange sleeve (4) (4 ') ... Segment (5) (5') ... Leaf spring (6) (6 ') ) Movable side handle (7) (7 ') Fixed side handle

Claims (1)

[Claims] 1. A core cylinder is a plurality of sheets of segments divided along the central axis, each segment scaled freely der the interval in the circumferential direction, and a plurality segments
The core cylinder formed by is expandable and contractible in the radial direction.
Ri, both ends toward the central axis of the cylinder, each flanged sleeve is fitted slidably, yet its respective ends closer, with each flange is fixed, each furan <br/> A U-shaped movable side handle extending toward the opening at the end of the cylinder is fixed to the sleeve with a jig, while each flange is located inside the movable side handle. A smaller U-shaped fixed side handle is fixed, and the inside of each segment of the plurality of segments and each of the flanged sleeves are connected by a leaf spring having an elastic force in the segment direction. A core of a web winding machine, wherein an inclination angle of the leaf spring with respect to a central axis is reduced by the proximity of the movable side handle to the fixed side handle.