JP3132191U - Rewinding machine that enables recirculation of the core - Google Patents

Abstract

An object of the present invention is to efficiently carry out rewinding to a short roll without any special modification to a conventional rewinding machine, to facilitate the use of the recycle of the core, and to reduce the cost of the core.
SOLUTION: In a rewinding machine that rewinds a web W from a long original roll R and rewinds it to a short roll, a cylindrical core 4 having a core outer diameter that can be expanded and contracted is used, and taper from both ends in a contracted state. The cone-shaped boss 45 is pushed in, the cylindrical shape is enlarged and the web W is wound up. After the winding is completed, the tapered cone-shaped boss 45 is retracted to reduce the cylindrical shape, and the winding core 4 is pulled out. Is removed as a coreless roll product M, while the pulled core 4 is received and lowered on a first core lifter 8 that can be raised and lowered, and the second core below the core supply unit is transferred via the transfer table 10. Is transferred to the core lifter side, and when the lifter 9 is lifted, the core is supplied to the core supply unit 11 of the rewinding machine so that it can be used repeatedly.
[Selection] Figure 1

Description

  The present invention relates to a rewinding machine that uses an expandable / contractable winding core, reduces the winding core after winding, extracts the winding roll as a coreless product, and uses the extracted winding core for circulation. .

  Currently, commercially available cooking sheets, aluminum foils, etc. are 5m, 8m, 10m rolls, etc., but these are usually used at home, so they are usually wound around paper tubes in short lengths, as shown in FIG. The tapered cone-shaped boss of the chuck 21 is pushed into both ends of the paper tube 20 and is wound and wound. However, since it is short, the cost required for the core is high, and it is required to wind without a core.

However, depending on the physical properties of the sheet to be wound to wind without a core, a dedicated rewinding machine is usually required. Therefore, as a means for winding the web without the above-described core, use a core that can be expanded and contracted instead of the paper tube. When winding, the core functions in the expanded state, and after the winding is finished, reduce the winding. It has been proposed that the core is pulled out from the roll and has no core, and the pulled core is repeatedly used as the next winding core. (For example, see Patent Document 1)
JP 2004-217397 A

  However, even if the drawn core is repeatedly used in the winding to obtain the coreless roll, the specific means is not shown. The present invention finds a particularly effective mechanism for repetitive use of the core against the actual situation as described above, and efficiently rewinds the short roll without adding special modifications to the conventional machine, and as a coreless roll An object of the present invention is to reduce the cost of the core by facilitating the circulation and use of the core.

  That is, the present invention that achieves the above object is a rewinding machine for rewinding a web from a long original roll and rewinding it to a short roll, using a cylindrical core with an expandable / contracted core outer diameter. Push down the tapered cone-shaped boss of the chuck at both ends in a reduced shape, wind up the web by enlarging the cylindrical shape, and after winding, retract the tapered cone-shaped boss to reduce the cylindrical shape and pull out the winding core, The winding roll is configured to be removed as a coreless roll product, and includes a first core lifter that can be moved up and down to receive and lower the core pulled out below the core pull-out position. A lower core lifter that can be moved up and down is disposed in the lower part to supply the core transferred from the lowered first core lifter via the transfer stand to the upper core supply unit. To do. In addition, it is preferable that the both-end chuck dimension for gripping the core to be rewinded is the same as the chuck dimension for the paper tube core.

  According to the above device of the present invention, the outer diameter of the core can be expanded and contracted, and the web wound with the outer diameter of the core being enlarged is extracted by reducing the core to obtain a coreless product. Since the outer diameter can be returned to normal and can be circulated and reused by using the first and second core lifters, the short length without cores can be easily and without special remodeling as with paper tubes. The roll can be produced automatically and efficiently.

  Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 shows a multi-axis turret winder used in the rewinding machine according to the present invention. The web W is unwound from a long raw roll R and sent to a turret device T through guide rollers 1 and 2, and the winding position. At b, the both ends are held by a take-up chuck, the touch roller 3 is pressed against a cylindrical core 4 having an outer diameter that can be expanded and contracted, and is wound as a short roll. The rewinded short take-up roll R ′, after full winding, moves according to the rotation of the turret device T, the web is cut by the cutting blade 5 between the transition position and the winding position, and the cut end is moved to the next end. While being wound around the core, the wound short roll R ′ is advanced to the discharge position c as a short roll product M. Prior to the release of the roll product M, the core 4 is pressed by the roll presser 6 and pulled out by the core holder 7 for pulling out.

  That is, when the winding roll R ′ reaches the discharge position c as the short roll product M by the rotation of the turret device T, the core chuck is opened and the outer diameter of the core is reduced. At the core take-out position, the take-up roll R ′ is pressed by the take-up roll presser 6 and the core is pulled out by the core holder 7 as shown in FIG. The pulled core 4 is provided with a first core lifter 8 that moves up and down at the lower portion thereof. When the core 4 is lifted, it receives the core 4 that has been pulled out by the receiving base 8a and descends.

  On the other hand, in the turret device T, the core to be supplied is held at a position a for supplying the core prior to the winding position b, and a core supply unit 11 for supplying the core is sequentially provided. A second core lifter 9 that raises the core 4 is installed in the portion 11, and the second core lifter 8 is second between the first core lifter 8 and the second core lifter 9 by the second core lifter 8. A transfer base 10 for transferring the core 4 is interposed in the core lifter 9, and the core 4 is placed on the transfer base 10 from the receiving base 8 a of the first core lifter 8 by the core pusher 12 as shown in FIG. 2. Is pushed toward the second core lifter 9 and placed on the second core lifter 9. Then, the core transferred along with the rise of the second lifter 9 is supplied again to the core supply unit 11 and is sequentially used for circulation.

  Thus, the web W unwound from the long original roll R is rewound as a short take-up roll R ′, formed into a short take-up roll product M, and the core chuck is opened at the core discharge position. When the core contracts, the core 4 is pulled out by the core holder 7 at the pulling position and pulled out by the core holder 7, and a short coreless roll product M is taken out, while the core holder 7 pulls it from the winding roll. The pulled core 4 is received on the first core lifter 8, descends as the core lifter 8 is lowered, and is pushed out onto the transfer table 10 by the core pusher 12 to be second core lifter. 9 is transferred to the side 9, held on the second lifter 9, and appropriately lifted and stored in the upper core supply unit 11 for repeated use.

  In addition, since the winding core 4 used in the present invention is pulled out from the winding roll after winding as described above, it is important that the winding core 4 has an expansion / contraction configuration that expands during winding and contracts after winding. . FIG. 3 shows an example of a winding core having such an expansion / contraction configuration. The core 4 has an outer cylinder portion 41 divided into three in the length direction and is held by a shrinking rubber ring 42 so that the chucks at both ends can be shrunk with the same size as the chuck of a conventional paper tube (see FIG. 4). An expansion / contraction coil spring 43 is fixed inside the cylinder portion with both ends fixed to the cam plate 44. When the taper cone-shaped boss 45 of the chuck is pushed into both ends during winding, the boss When the coil spring 43 is compressed and released in the axial direction by the engagement of the tapered cone-shaped boss portion 45 and the cam plate 44, the outer cylinder portion 41 expands when the winding is performed, and is reduced after the winding is completed. It will be pulled out from the product. Of course, it is not limited to the above configuration as long as the core can be expanded and contracted.

  As described above, the device of the present invention can serve as a winding core when winding the web by expanding and contracting the winding core, and can be provided as a winding roll without a winding core by being pulled out after winding. At the same time, the drawn core is circulated and used repeatedly as the next winding core, which is very effective for environmental problems, resource saving and cost reduction.

It is a side outline figure of the whole rewind machine concerning the present invention. It is action explanatory drawing which shows a winding core circulation use aspect. An example of the expansion-contraction winding core used in this invention is shown, (A) is a cross-sectional schematic diagram, (B) is a longitudinal cross-sectional view. It is a known paper tube example, (A) is a cross-sectional view, (B) is a paper tube vertical cross-sectional view.

Explanation of symbols

R: Long roll roll R ': Short take-up roll M: Short take-up roll product 1, 2: Guide roller 3: Touch roller 4: Winding core 5: Cutting blade 6: Winding roll presser 7: Winding core holder 8: 1st core lifter 9: 2nd core lifter 10: Transfer stand

Claims (2)

  A rewinding machine that unwinds the web from a long roll and rolls it back to a short roll, using a cylindrical core that can expand and contract the outer diameter of the core. The boss is pushed in, the cylindrical shape is enlarged and the web is wound up.After winding, the tapered cone-shaped boss is retracted, the cylindrical shape is reduced, the winding core is pulled out, and the winding roll is removed as a coreless roll product. And a first core lifter that can be moved up and down to receive the core that has been pulled out below the core pull-out position, and is provided at the lower part of the core supply section. A second core lifter that can be moved up and down to supply the core transferred from the core lifter via the transfer stand to the upper core supply unit is disposed. A rewinding machine.   2. A rewinding machine according to claim 1, wherein the size of the chuck at both ends for holding the cylindrical core is the same as the size of the chuck for the paper tube core.

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