JP4769641B2 - Locking method and apparatus for cutting sheet-like material - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-like material cutting locking method and apparatus for obtaining a product by pulling out a sheet-like material from a plastic foam sheet or a plastic foam roll of plastic foam sheet and cutting it. .

  Examples of plastic sheet materials used in various fields including buffer packaging include plastic bubble sheets, plastic foam sheets, and other film sheets.

  Plastic bubble sheet [trade name Petit Petit (registered trademark)] is a plastic material film such as polyethylene, vacuum-formed to obtain a cap film having a large number of protrusions, and a flat plastic back film is attached to the bottom of the cap. In addition, the molded product is formed by forming a number of sealed air chambers.

  The plastic foam sheet is formed by mixing a foaming agent as the same kind of material and stretch-molded. The buffer function is not as high as that of the bubble sheet, but can be easily manufactured. In the following description, these are represented by bubble sheets.

  Since the air bubble sheet is continuously manufactured, the material is provided as a form in which a long product is wound up. This is called an original fabric roll.

  For some applications, a product or semi-finished product called “cut product”, which is wound up and cut into an appropriate size and shape, is prepared, and is often used in an automatic packaging machine or the like. Therefore, cut products are usually transported, stored, and used in the form of a stack of multiple sheets. That is, when carrying out bag making, cutting, etc. by secondary processing, it is generally wound up once on a roll, and this roll is processed as a raw roll and processed with a bag making and cutting machine for secondary processing. .

  The same handling is performed when a medium to small bag is formed with a bubble sheet. The bubble sheet bag is used as it is, and is also used in the manufacture of a buffer envelope in which a paper envelope is lined. In the following description, bags are also represented in terms of cut products.

  Since the length of the sheet-like material in the original fabric roll is naturally limited, in order to perform continuous processing for a long time without interrupting the operation of the cutting machine or the molding machine, When the remaining amount is exhausted, it is necessary to join the end portion of the sheet-like material to the start end portion of the sheet material of the next prepared raw roll.

For this reason, as can be seen in Patent Documents 1 and 2 below, the support rod inserted through the center portion of the next roll roll on the rear side of the roll roll in the middle of feeding the sheet-like material. Is held in the support frame stand in a state where it can be in a horizontal posture, and a part of the sheet-like material is pulled out from the original roll, and an adhesive tape is applied to the starting end of the partly drawn-out sheet material. Paste along the width direction of the object. A double-sided tape is suitable for the adhesive tape.
JP-A-8-91650 Japanese Patent Laid-Open No. 10-77144

  In splicing with such an adhesive tape or the like, the spliced portion should naturally be removed as debris, but it is not preferable for recycling because the adhesive of the adhesive tape is mixed into the plastic material.

  In particular, when the plastic sheet is a thick bubble sheet or foam sheet, this tendency is remarkable because the winding length of the original fabric is reduced and the number of times of seaming is increased.

  The object of the present invention is to eliminate the inconvenience of the conventional example, and to easily and reliably join the original fabric without using an adhesive tape such as a double-sided tape, and to be able to fully automate the original fabric. An object of the present invention is to provide a locking method and apparatus for cutting a shaped object.

In order to achieve the above-mentioned object, the present invention is an apparatus at a stage prior to cutting when a product is obtained by drawing a sheet-like material from a raw roll and cutting it into a predetermined size, and the raw roll of the used raw roll arranged side by side And the next roll of the original fabric to be used, the means for pulling out the sheet-like material from these rolls, the end of the next roll to be used is pulled out of the roll and the used roll is pulled from the roll. A holding means for waiting in the up and down position in the middle of the sheet, and a locking device for cutting a sheet-like material comprising a welding device such as a hot wire that is joined by thermal welding together with the end of the original material to be used and the start of the next material to be used. The welding equipment is to be used alternately. Two pieces are installed side by side on the left and right sides, and the cylinders are moved up and down together. Cutter for material cutting Apparatus using, as a pre-process cutting, original fabric roll is juxtaposed the original fabric and the next scheduled use raw used, used raw and next scheduled use raw are those drawn from alternating juxtaposed to original fabric roll The end of the next roll to be used is pulled out from the roll, and is kept in the vertical position in the middle of the roll that is pulled out from the roll, and used alternately with a welding device such as a hot wire. The gist is to obtain a product by drawing the sheet-like material from the original fabric roll and cutting it to a predetermined size by joining the end of the original fabric and the beginning of the next scheduled original fabric by heat welding. Is.

  According to the present invention, the old and new original fabrics are inherited by welding with a welding device such as a heat ray, and are automatically pulled out from the original rolls of the used original fabric and the next planned original fabric, and automatically replaced. Can be inherited.

  In addition, it is possible to replace the old and new original fabrics and perform welding by using the welding devices using heat rays and so on instead of moving them.

  As described above, the locking method and apparatus for cutting a sheet-like material according to the present invention can easily and reliably join an original fabric without using an adhesive tape such as a double-sided tape. Therefore, it is possible to avoid an unfavorable situation where the adhesive of the adhesive tape is mixed into the plastic material during recycling.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of a locking method and apparatus for cutting a sheet-like material according to the present invention, and FIG. 2 is an explanatory view of the main part of the same.

  When the entire sheet-like material cutting processing system using the sheet-like material cutting locking device of the present invention is described above, it is assumed that the product is obtained by drawing the sheet-like material from the raw roll and cutting it. 3. As shown in FIG. 4, it consists of a raw fabric hook 1, a feeding device 2, a cutter body 3, and a binding machine 4.

  The original fabric hook 1 includes a plurality of original fabric rolls 5a and 5b, which are a juxtaposed raw web roll and a next web roll to be used, placed on a holding table 30 and arranged in parallel as a pair. The rack 6 is divided into a plurality of racks. In the figure, 31 is an end face guide.

  The feeding device 2 includes a feeding roll 7 and a brake roll 8. The cutter body 3 includes a slitter 9 and a nip roll 10.

  The binding machine 4 includes a conveyor 11 for transporting a cut product from the cutter body 3, a stacking mechanism 12, a stacking conveyor 13, a gun head 14, a tape 15, and a carry-out conveyor 16, and stacks the cut products and winds the tape 15. The bundles are rotated to carry out the union, and the union is carried out by the carry-out conveyor 16.

  The locking device for cutting a sheet-like material of the present invention is one in which two original fabric rolls 5a and 5b of the original fabric roll of the used original fabric 17a and the original fabric roll of the next planned original fabric 17b are juxtaposed, A pressing roller 18 and guide rollers 19, 20, 21, and 22 are provided as a means for pulling out the next raw material 17 b to be used next from the original material 17 a that is a sheet-like material from the original material rolls 5 a and 5 b. The next raw material 17b to be used next with the raw material 17a to be used is pulled out by the feed roll 7 of the feeding device 2, and the feeding device 2 also constitutes a part of the drawing means.

  In the figure, reference numeral 23 denotes an end portion of the next raw fabric 17b to be used next from the raw roll and the guide rollers 19 and 20 are wound. It is a holding bar that waits. This is configured as a movable arm so that the holding position can be moved left and right, or a pair is provided on the left and right although not shown.

  In the figure, reference numerals 24a and 24b are welding devices using a hot wire 25. These are used alternately, and two are provided side by side with a space left and right, and are moved up and down by a cylinder 26 together. Further, cradles 27a and 27b are provided corresponding to the welding devices 24a and 24b, respectively. Urethane rubber 28 is disposed on the upper surfaces of the cradles 27a and 27b as contact surfaces of the heat rays 25. The welding devices 24a and 24b (impulse seal) using the hot wire 25 may be replaced with a heat seal using a preheated heat seal bar.

  Further, a termination sensor 29 for detecting the end of the used raw fabric 17a, which is a sheet-like material from the original fabric rolls 5a and 5b, is disposed close to one of the drawing lines of the used raw fabric 17a. As the termination sensor 29, a photo sensor, an infrared sensor, or the like using a combination of a light emitter and a light receiver can be used. Further, the drive control of the cylinder 26 and the on / off control to the heat wire 25 are performed by the output of the end sensor 29.

  The welding devices 24a and 24b by the heat wire 25 are provided at a position where the end of the used raw fabric 17a and the starting end of the next scheduled raw fabric 17b overlap, that is, in the vicinity of the holding bar 23, and the end of the used raw fabric 17a It is assumed that these can be sandwiched between the cradles 27a and 27b when the starting end of the next use original fabric 17b overlaps.

  Next, the locking method for cutting a sheet-like material of the present invention performed using the above apparatus will be described. As a pre-process of cutting with the cutter body 3, the original rolls 5a and 5b are arranged side by side for the original raw fabric 17a and the original raw material 17b to be used next. Either of the original fabric rolls 5a, 5b may be used raw fabric 17a, or may be the next planned original fabric 17b, and are used alternately.

  Next end of the original fabric 17b to be used is pulled out from the original fabric roll 5b, locked by the holding bar 23, and waits at the vertical position in the middle of the used original fabric 17a drawn from the original fabric roll 5a. deep.

  The used original fabric 17a is pulled out from the original fabric roll 5a, and is sent to the cutter body 3 by the feeding device 2 through the guide rollers 19, 20, 21, and 22, and is cut.

  When the used raw fabric 17a of the original fabric roll 5a disappears, the end sensor 29 detects the end of the used original fabric 17a, and the welding devices 24a and 24b using the heat wires 25 use this as the end of the used original fabric 17a and the next usage schedule. When the starting edge of the original fabric 17b overlaps, these are sandwiched by the cradle 27a and thermally welded.

  As a result, the end of the original web 17a and the start end of the next original web 17b are connected, and the next original web 17b is pulled out from the original roll 5b as the original web 17a.

  The original roll 5a is newly set, and its end is pulled out from the original roll 5a and locked by the holding bar 23.

  In this way, when the used raw fabric of the original fabric roll 5b disappears, it is similarly thermally welded by the welding device 24b using the hot wire 25 and succeeded to the next used raw fabric of the original fabric roll 5a.

It is explanatory drawing which shows one Embodiment of the latching method and apparatus for cutting of the sheet-like material of this invention. It is explanatory drawing of the principal part which shows one Embodiment of the latching method and apparatus for cutting of the sheet-like material of this invention. It is a side view which shows the whole cutting system of a sheet-like material. It is a top view which shows the whole cutting system of a sheet-like article.

DESCRIPTION OF SYMBOLS 1 ... Original fabric hook 2 ... Feeding device 3 ... Cutter body 4 ... Bundling machine 5a, 5b ... Original fabric roll 6 ... Multiple racks 7 ... Feed roll 8 ... Brake roll 9 ... Slitter 10 ... Nip roll 11 ... Conveyor 12 ... Loading Mechanism 13 ... Loading conveyor 14 ... Gun head 15 ... Tape 16 ... Unloading conveyor 17a ... Original raw material 17b ... Original raw material 18 ... Pressing rollers 19, 20, 21, 22 ... Guide rollers 23 ... Holding bars 24a, 24b ... Welding Device 25 ... Heat 26 ... Cylinders 27a, 27b ... Receiver 28 ... Urethane rubber 29 ... Terminal sensor 30 ... Holding base 31 ... End face guide

Claims (1)

This is a device at the stage prior to cutting when a product is obtained by drawing a sheet-like material from a raw roll and cutting it into a predetermined size. , Means for pulling out the sheet-like material from these rolls, and holding means for pulling the end of the next roll to be used from the roll and waiting in the vertical position in the middle of the roll used being pulled from the roll , And a locking device for cutting a sheet-like material consisting of a welding device such as a hot wire that is joined by thermal welding together with the end of the original material to be used and the beginning of the next material to be used, and the welding device is used alternately Two are installed side by side with a space left and right, and the cylinders are moved up and down together, and a cradle is provided for each welding device.
Using this sheet-like cutting locking device,
As a pre-cutting process, the original roll roll is placed next to the original roll to be used next and the next roll to be used. Pull the end of the planned web from the roll and let it stand in the vertical position in the middle of the used roll pulled out from the roll, and use it alternately with a welding device such as a hot wire.
A sheet-like product characterized in that a product is obtained by drawing a sheet-like material from a raw fabric roll and cutting it into a predetermined dimension by joining the end of the original fabric and the starting end of the next scheduled raw fabric by thermal welding. Locking method for cutting objects.

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