JP2571710Y2 - Sheet feeding device for web take-up roll - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for superposing a sheet on a web drawn from a web roll and automatically feeding the sheet to a web take-up roll.

[0002]

2. Description of the Related Art For small splitting and rewinding, a web is pulled out from a material roll on the unwind side by a winder or a reeler and wound up again in a roll form on the wind side to form a winding roll. In some cases, the sheet is superimposed on the web and supplied to a take-up roll. For example, for the purpose of preventing moisture, a sheet for preventing moisture such as vinyl is overlapped on the web at the final stage of winding, and the sheet is supplied so as to be wound around the surface layer of the winding roll.

FIG. 5 is an explanatory view of an example of a conventional sheet feeding method. A web W is drawn out from a web roll A rotatably supported by an unwind by a roller group, and a predetermined surface is separated by a slitter C. It is cut into a width and wound again into a roll on the wind side to form a winding roll B. Then, two workers (not shown) located at both ends of the take-up roll B hold the leading end of the sheet S, and in the final stage of take-up, the sheet S is taken up by the take-up roll B and the final-stage roller R. It is caught in between and is involved with the web W.

FIG. 6 is an explanatory view of another conventional sheet feeding method. In the method shown in FIG. 5, since there is a risk that the worker may get caught in the winding roller B, a protection plate P which is a take-out step when turned is arranged at the outlet of the winding roller B. Therefore, the sheet S cannot be directly wound on the winding roller B from the wind side as in the method of FIG. A double-sided tape T is attached to the leading edge, and the leading end of the sheet S is attached to the surface of the material roll A in the final stage of winding. Therefore, the web W
Is pulled out from the material roll A in a state of being superposed on the sheet S, and the sheet S is wound around the surface layer of the winding roll B.

[0005]

As described above, in any of the methods, two workers manually wind the sheet on the take-up roll, and the efficiency of sheet supply to the take-up roll is extremely high. There are low defects, and there is also danger.

In the method shown in FIG. 5, the surface width of a web cut to a predetermined surface width by a slitter according to a customer's request is generally different from the surface width of a prepared sheet. The "ears" of the sheet protruding from the end need to be cut manually in a post-process, and it is necessary to perform inefficient work. Further, in the method shown in FIG. 6, since the sheet and the web are simultaneously cut by the slitter,
The cut sheet and web mix. Therefore, it is necessary to separate them for the regenerating process, which requires a great deal of trouble, which has been a major obstacle to improving the working efficiency.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a sheet feeding device for a web take-up roll which can automatically take up a sheet on a take-up roll, thereby significantly improving work efficiency and safe. .

[0008]

In order to achieve the above object, the present invention is an apparatus for superposing a sheet on a web drawn from a raw roll and feeding the sheet so as to wind the sheet around a winding roll of the web. A sheet take-out unit that pulls out the rolled sheet in a braking state, a sheet holding unit that adsorbs the leading end of the sheet pulled out from the sheet take-out unit, and moves up and down by a lifting mechanism. It consists of a sticking section for sticking the double-sided tape and a cutting section that cuts the sheet by moving up and down by the lifting mechanism.The sheet holding section is raised and the tip of the sheet with the double-sided tape stuck is pulled out from the raw roll. Pasted on the web
The sheet is cut after a predetermined length of the web and the sheet have been wound up by the cutting section.

[0009]

In other words, the sheet holding section and the cutting section alternately move up and down, and the sheet with the double-sided tape pulled out from the sheet take-out section is wound around the winding roll, and the sheet is cut after the winding is completed. Sheets can be automatically supplied without manual operation, and safety and work efficiency are significantly improved.

Further, if a cutter unit for cutting both ends of the sheet drawn from the sheet take-out unit and setting the sheet to a predetermined width is added to such an apparatus, the "ears" of the sheet may be cut manually in a later step. In addition, there is no need to separate the cut sheet and web in a subsequent step, and the working efficiency is further improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the drawings. In FIG. 1, a movable frame 7 is attached to a base 6 having a substantially L-shaped side surface so as to be rotatable about a support shaft 71, and the movable frame 7 is provided with a cylinder 72 disposed on the base 6. To rotate. The sheet take-out section 1 is disposed on the support shaft 71 side of the movable frame 7.

As shown in FIG. 2, the sheet take-out unit 1 includes a movable chuck 11 and a fixed chuck 12 which are arranged to face each other.
A disc-shaped braking mechanism 13 is connected to the rotating shaft of the fixed chuck 12. The movable chuck 11 is movable in the tube axis direction of the sheet roll SR on which the sheet S is wound in a roll shape, and the movable chuck 11 moves in the direction of the sheet roll SR and cooperates with the fixed chuck 12 to form the sheet roll. The SR is rotatably supported. Then, the sheet S is pulled out from the sheet roll SR.
Since the braking mechanism 13 is connected to the rotation shaft 12, the sheet S is in a tensioned state when pulled out, so that the sheet S is smoothly pulled out without slack.

Next, as shown in FIG.
The sheet holding unit 2 and the cutting unit 4 are arranged on the upper side, and the sticking unit 3 is arranged on the base 6. The sheet holding section 2 has a top surface 21
The suction box 24 is provided with a large number of suction holes, and a vacuum pump (not shown) is connected to a suction pipe 22 extending from the side surface of the suction box 24. Suction box 24
A pair of presser brackets 23 (only one is shown)
Are arranged so as to be movable up and down, and the leading edge of the sheet S pulled out from the sheet take-out section 1 is
21. Therefore, sheet S
When the vacuum pump is actuated, the sheet S is sucked and held by the suction box 24. Then, a cylinder 25 is arranged on the movable frame 7, and the suction box 24 is driven by the cylinder 25 to move up and down.

The cutting section 4 includes a heater wire 41 and a pedestal 42 supporting the heater wire 41.
Is driven by a cylinder 43 arranged on the movable frame 7 to move up and down. When the heated heater wire 41 rises and comes into contact with the sheet S, the sheet S is cut. However, the cutting portion 4 is not limited to the heater wire 41, and may be, for example, a cutter knife, a saw tooth, a slitter, or the like. .

The sticking section 3 is arranged on the top of the base 6 and a tape attaching machine 31 for attaching the sheet S while rotating the double-sided tape and winding the release paper of the double-sided tape. Sliding member that guides in the surface width direction
Consists of 32. Accordingly, when the tape attaching device 31 moves along the surface width direction of the sheet S pressed on the top surface 21 of the suction box 24 by the holding metal 23, the double-sided tape is attached to the sheet S.

The structure of the sheet feeding device according to the first aspect of the present invention is as described above. The sheet feeding device according to the second aspect of the present invention includes a sheet take-out unit 1 and a sheet take-out unit 1 as shown in FIG. A cutter unit 5 is further disposed between the sheet holding units 2. That is, the cutter section 5 includes a pair of cutter knives 51 and a screw feed member 52 for moving the cutter knives 51 in the surface width direction of the sheet S. The sheet S moving on the movable frame 7 is controlled by the pair of cutter knives 51. The web W is cut to the same width as the web W cut to a predetermined width by the slitter C. The interval between the pair of cutter knives 51 is set to the same width as the web W cut to a predetermined width by the slitter C by detecting the distance of the slitter C from a certain reference and setting the distance by an encoder. Can be. Also, an ear winder 5 is provided in the movable frame 7.
3 is attached, and the “ears” of the sheet S cut by the cutter knife 51 are wound by the ear winder 53.

The sheet feeding device of the present invention, for example, claim 2
As shown in FIG. 4, the described sheet feeding device is installed between the unwind of the material roll A and the slitter C. The sheet S pulled out from the sheet take-out unit 1 is cut by the cutter unit 5 to the same surface width as the surface width of the web W to be cut to a predetermined surface width by the slitter C, and then the double-sided tape is applied to the leading end by the sticking unit 3 Is attached, and the sheet holding unit 2
Ready to be held by.

Then, the web W is drawn out from the web roll A by rotation of the winder, cut into a predetermined surface width by the slitter C, and wound up to form a winding roll B. Is reached, the movable frame 7 is raised and the sheet holding section 2 approaches the web W. Then, when the winding length complete signal is
25 is actuated to further raise the sheet holding unit 2 and the sheet S
Is attached to the web W. When the attachment is completed, the vacuum of the sheet holding unit 2 is released, and the sheet holding unit 2 descends. Accordingly, the sheet S is wound up near the surface layer of the winding roll B in a state where the sheet S is overlapped with the lower surface of the web W. At this time, the surface width of the sheet S cut by the cutter unit 5 and the surface width of the web W cut by the slitter C are the same, and the "ears" of the sheet S are cut by post-processing, or the sheet S cut together is cut. And the "ears" of the web W need not be separated. In addition,
The cutter unit 5 is not added to a winder in which the surface width of the web W is always the same and the web W is not cut by the slitter C or the web W is always cut to the same surface width by the slitter C. Is used.

When the winding is completed and the winder is stopped, the cylinder 25 operates and the sheet holding unit 2 rises again, comes into contact with the sheet S, and operates the vacuum.
Accordingly, the sheet S is held by the sheet holding unit 2, and the sheet holding unit 2 is lowered in this state. That is, the sheet S
Is separated from the web W. Next, when the cylinder 43 is actuated and the cutting section 4 rises and comes into contact with the sheet S, the sheet S
Is cut, the cutting section 4 is lowered, and the movable frame 7 is also lowered, thereby completing one cycle of work. Then, the above-described preparation process proceeds, and preparation for the next cycle is completed.

[0020]

As described above, according to the sheet feeding apparatus of the present invention, the sheet can be automatically supplied to the take-up roll and wound up without any manual operation as in the prior art, and the work efficiency can be improved. And safety is ensured. Further, when a cutter unit is added to the sheet feeding device, the working efficiency can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a sheet feeding apparatus described in claim 1;

FIG. 2 is an explanatory diagram of a sheet take-out unit.

FIG. 3 is a perspective view showing an embodiment of the sheet feeding apparatus described in claim 2;

FIG. 4 is an explanatory diagram of a use state.

FIG. 5 is an explanatory diagram of a conventional example.

FIG. 6 is an explanatory diagram of a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Sheet take-out part 2 Sheet holding part 3 Sticking part 4 Cutting part 5 Cutter part 6 Base 7 Movable frame A Material roll B Take-up roll C Slitter S Sheet W Web SR Sheet roll

Claims (2)

(57) [Scope of request for utility model registration] 1. A device for superposing a sheet on a web drawn from a raw roll and feeding the sheet to be wound on a web winding roll, wherein the rolled sheet is braked. A sheet take-out unit, a sheet holding unit that adsorbs the leading end of the sheet pulled out from the sheet take-out unit and moves up and down by an elevating mechanism, a sticking unit that attaches a double-sided tape to the end of the sheet, and moves up and down by an elevating mechanism The sheet holding section is lifted and the leading end of the sheet to which the double-sided tape is stuck is attached to the web pulled out from the raw roll, and the cutting section is lifted to a predetermined position. An apparatus for feeding a sheet to a web take-up roll, wherein the sheet is cut after the length of the web and the sheet have been wound. 2. A sheet for a web take-up roll according to claim 1, further comprising a cutter section for cutting both ends of the sheet taken out from said sheet take-out section to set the sheet to a predetermined width. Feeding device.