JPS594565A - Rewinding method and device for sheet material - Google Patents

Abstract

PURPOSE:When rewinding sheet material woun into a roll, to eliminate excessive stock by functioning a knife onto the outercircumference of roll to cut the sheet material only by the required width then rewinding thus feeding only required amount of required width. CONSTITUTION:A long length sheet A wound on a winding roller 1 is fed through a deflection roller 2 and a heating roller 3 to the following process. Here a rail 8a is provided in parallel with the center of the winding roller 1 while a post 8 is provided movably along said rail. A rotary arm 4 is pivoted at the upper end of said post 8 through a shaft 4a, while a knife 5 is fixed at the lower portion of tip through a holder 5 and a pressure contact roller 7 for preventing traversal of knife 5 and limiting the cutting depth is fixed idly. Consequently when rewinding the long length sheet A, the knife 6 is cut into the outercircumference of said sheet A with predetermined width and depth then the long length sheet A of required width is rewound.

Description

[Detailed Description of the Invention] The present invention applies to long sheet-like materials such as plastic sheets, cloth, paper, and plywood sheets. The present invention relates to a method and apparatus for unwinding from a take-up roller.

Conventionally, long sheet-like materials such as brass tink sheets (hereinafter simply referred to as long sheets) have been wound around winding rollers (reeling) and stored or transported in the form of rolls. It was frequently done to unwind the rolled ball after using the special number. L
If the width of the rolled balls and the actual sheet width required for sorting do not match, for example, the rolled balls are 6 shaku wide (on the other hand, if you want to sort 3 shaku wide or 4 shaku wide, Once the 6-shaku width roll is rewound, it is cut into 3-shaku or 4-shaku width using a cutting machine such as an IJ7 cutter, and then it is re-rolled into 3-shaku or 4-shaku width. Of course, this inconvenience could be avoided if you prepared a few rolls of the desired width from the beginning, but you would have to keep a lot of stock and not have one roll. It was thought to be economical, and it was considered most convenient from an economical and operational standpoint to rewind only the necessary items as necessary.

The present invention was developed in response to such a conventional demand, and its gist is that when unwinding a rolled ball, the cutting edge is placed at an appropriate position on the outer circumference of the rolled ball (Q), at the top of the unwinding direction, that is, in the unwinding direction. The method is characterized in that the long sheet is cut to the required width and rewound while being cut by a knife in the opposite direction. This apparatus is characterized in that a knife similar to the above is disposed at an appropriate position on the outer periphery of the rolled ball so that the knife can be moved toward and away from the outer periphery of the rolled ball.

An example of implementing the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a device for rewinding a long sheet A that has been wound around a winding roller l. It is supplied to the next process such as the cloth process.

Reference numeral 4 denotes a rotating arm which is pivotally connected to a rotating eye about a shaft 4a, and a knife holder 5 is attached to the lower end of the rotating arm. This knife holder 5 is equipped with a knife 6 with its cutting edge opened in the unwinding direction of the take-up roller 1 (see arrow).
is provided, and the rotating arm 4, the knife holder 5, and the knife B are arranged so that the cutting edge of the knife cuts from the outer periphery of the long sheet A over the thickness of the long sheet A. ing. The guard near the knife B holds down the long piece A when making a cut, and prevents the cut from being jagged or skewed, and the pressure roller 7, which limits the depth of the cut, allows free rotation. It is attached to the eye.

The means for pressing the knife 6 against the outer periphery of the long sheet A may be such that it is forcibly pressed against the outer periphery of the long sheet A by pressing or pulling the rotary arm 4 of 0M weight. Alternatively, the knife 6 may be elastically held in the knife holder 5 via a spring or the like.

By the way, in the case of a long plastic sheet with a thickness of 0.16 to 0.2 mm, good results were obtained by adjusting the blade edge of the knife so that the cut was about 5 sheets thick from the surface. However, it goes without saying that the depth of the cut can be adjusted as appropriate depending on the material and purpose.

In the figure, 8 is a post that is movable along a rail 8a arranged parallel to the axis of the winding roller 1, and by moving the post, it is possible to change the number of notes to be rewound. Also, is 9 the drive motor for heat roller 3? The user then pulls the edited note to rewind it.

The third example shows 112 embodiments of this Komei device.
The base end of the rotating arm 4' is parallel to the take-up roller l (3
1.] The self-recessed slot 4a'# is fitted, and the α rotation arm 4' is configured to be movable in the axial direction O'. Therefore, in this embodiment, there is no need for a moving rail, and there is an advantage that the mechanism can be opened. In FIG. 3, the configuration is the same as that of the first embodiment (the same reference numerals are given to the same components).

When rewinding a rolled ball using the above-mentioned device,
First, in order to set the position of the cutting edge of the knife 6 to the required width of the sheet to be rewound, the rotating arm 4 is appropriately moved in the axial direction of the winding roller. Then, the cutting edge of the knife B is applied to the outer periphery of the rolled ball, and the drive roller (heat roller 3 in the case of FIG. 1) is activated to start rewinding. Then, the tip of the knife O cuts into the outer periphery of the rolled ball-shaped long sheet A to a certain depth, the long sheet A is rolled, and the sheet is rolled to the required width. . On the other hand, the sheet that is not rewound remains on the take-up roller, forming a rolled ball with steps 10 as shown in FIG. Of course, if it is desired to unwind a sheet of the full width of the roll, it is necessary to wind the sheet using another roller to eliminate this step 10.

As described above, the present invention makes it possible to supply sheets of the required width in the required quantity, eliminating the need for wasteful inventory and being economical, as well as producing narrow rolled balls from wide rolled balls. This process can be omitted and the workability can be improved as well.

[Brief explanation of drawings]

The drawings show an example of Honkabuto Akemi Mli, and Figure 1 is a perspective view of the rewinding device. , +A 2 is the same side view, Figure 3 is a side view showing another embodiment, and Figure @4 is a perspective view showing 10% of the shape of the rolled ball after implementing the present invention. A...Long sheet, l...Take-up roller, 4116 rotating arm, 51. Knife holder, 60. knife, 10
01 step

Claims (1)

[Claims] 1. When unwinding a sheet material that has been rolled up into a rolled ball,
A method for rewinding a sheet-like material, characterized by cutting the sheet-like material to the required width and rewinding it by applying a knife to an appropriate position on the outer periphery of the rolled ball with the cutting edge directed toward the unwinding direction. . 2. A ball-shaped sheet material taken up by a take-up roller? In many unwinding devices, a knife is installed at an appropriate position on the outer periphery of the rolled ball, with the cutting edge opened well in the unwinding direction, and the knife is installed with a groove on the outer periphery of the rolled ball so that the #: separation can be freely adjusted. A sheet-like material rewinding device characterized by: 3. The knife approach/separation mechanism comprises a rotating arm that rotates around an axis parallel to the winding roller, and a knife holder provided at the tip of the rotating arm. A rewinding device for a sheet-like material according to Scope 2. 4. The sheet-like material rewinding device according to claim 2, wherein the knife is movable between the narrow sides of the winding roller.