JPS59108653A - Device for changing wound sheet in exchanging winding shaft - Google Patents

Abstract

PURPOSE:To promote the accuracy of winding the cut-off ends of a sheet, by providing a movable bearer for the bottom of the sheet so that the bearer also functions as a both-side pusher to tighten and hold the sheet at the cut-off and by pushing both the cut-off ends of the sheet on a sheet roll and a winding shaft after the cut-off. CONSTITUTION:To cut-off a sheet S in the gap A between a sheet roll 6 and a new winding shaft 5, a movable bearer 8 for the bottom of the sheet is driven by a fluid pressure cylinder 9 so that the bearer is moved into the gap A after the sheet is cut-off. The top of the bearer 8 bears the sheet S and the sides 8a of the bearer act as elastic pushers, which push and hold the sheet on the sheet roll 6 and the winding shaft 5 at the cut-off and thereafter enter into the gap A and push both the cut-off ends on the sheet roll and the winding shaft.

Description

[Detailed Description of the Invention] This invention is a winding device that winds a fixed amount of a belt-shaped sheet onto a winding shaft to make sheet rolls one after another, and when replacing the winding shaft, the winding sheet is switched to a new winding shaft. Regarding equipment.

As mentioned above, when making a large number of fixed-quantity sheet rolls using a winding device, conventionally a cutting mechanism without a backing was used to cut the supplied sheet and separate it into old and new rolls, and the cut end on the sheet roll side was cut off. The cut end is brought close to the winding shaft using air jets or naturally generated static electricity. Therefore, the cut end of the sheet was cut accurately in a straight line parallel to the winding shaft.<-1 When the sheet was wound around the winding shaft, the end was distorted and easily folded.

As the number of cases in which ultra-thin sheets with a thickness of several micrometers are being wound has increased recently, and the quality of the winding has come to affect the quality of the final product, the accuracy of the first roll has become an important issue. Ta.

This invention secures the accuracy of the cut end by cutting the sheet with the back supported when replacing the winding shaft, and the back support is used as a pusher on both sides to hold the sheet under tension when cutting the movable support beam. It also has the function of pressing both cut ends of the sheet against the surfaces of the sheet roll and the winding shaft after cutting the sheet.

Next, the configuration and embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an example of a winding device to which the present invention is applied. The / is the original sheet, and the sheet S that comes out of this is divided into multiple strips by a slitting tacho, and is advanced from the guide roller 3 into upper and lower sections every other thread, and is wound onto the winding shaft S after passing through the upper and lower touch roller lags. .

After winding up the required amount of sheet roll 6 at the winding position shown in the figure, a turning mechanism (not shown) moves the sheet roll 6 to the unloading position (S') along the path shown by the chain line, and the new sheet roll 6 is moved to the unloading position (S') waiting there. This is a well-known structure in which an (empty) winding shaft moves into a winding position. The traveling blade 7 and the movable support beam unique to this invention are shown enlarged in FIG.

To summarize the present invention with reference to FIG. 2, a sheet roll 6 is made by winding up a fixed amount of a belt-shaped sheet S, the roll roll 6 is replaced with a new roll roll 6, the supplied sheet S is cut, and the old and new rolls are rolled. A device for dividing into shafts 5 and 5', and a sheet roll 6
When cutting the sheet S in the gap between the new winding shaft and the new winding shaft, move the movable support beam g that supports the back of the sheet S, and advance this support beam g to the above-mentioned interval at first, and after cutting the sheet, Gap A
A drive mechanism for pushing inward, in this case a hydraulic cylinder 9, is provided.

The support beam g has its tip end as a seat receiving surface and its side surface as an elastic pressure part gα
When cutting the sheet S, this pressurizing section α restrains the sheet S from being pressed against the sheet roll 6 and the winding shaft, and after cutting, the gap A
This is a winding sheet switching device at the time of winding shaft exchange, characterized in that the winding sheet is inserted into the winding shaft and both cut ends are pressed against the sheet roll 6 and winding shaft 5, respectively.

Sheet cutting may be done manually, but in this example, the cutting blade 7 is automatic, and only its guide material IO is shown in the figure. in this case,
Pull it with a chain and run it. Note that the cutting blade 7 may be a razor blade instead of a rotary blade as shown in the figure, or may be a full-width blade that does not run. In addition to providing the blade and drive mechanism on the upper side as shown in the figure, they may also be housed within the support beam g and only the cutting edge should be exposed above.

The movable support beam g is the main character of this invention, and in the embodiment shown in the figure, rubber is pasted on the left and right sides of a square steel bar to form the elastic pressure section α. The thickness of the end portion of the support beam g including this pressurizing portion gα is such that it can be pushed into the sheet roll and the opening 1 fijtA between the winding shafts and enter the sheet roll while being crushed.

Figures 3 and 4 show the case where the present invention is applied when winding up a sheet S, which is a material for an adhesive tape.

The adhesive sheet s is rolled up with the upper side of the figure as the adhesive surface. Therefore, when the sheet roll 6 and the new winding shaft are exchanged as shown in Fig. 3, and the trailing sheet of the sheet roll B is hanging on the winding shaft, the movable support beam g is pushed up from the lower standby position. , the upper ends of the pressurizing parts gα on both sides are stopped at a place where they are in contact with the seal and the circumferential surface of the winding shaft, resulting in the state shown in FIG. The sheet SI in contact with both side peripheral surfaces is adhesive.

Therefore, as shown in the enlarged view in Figure 5, after cutting the sheet SI on the upper surface of the support beam g by running the cutting blade 7, when the support beam g is further pushed up as shown in Figure 4, both cut ends become elastic. target pressurizing part g
The sheet roll 6 is pressed upward by α and is tightly adhered to the circumferential surface of the winding shaft without bending or distortion, as shown by the chain line in FIG. Therefore, even if the sheet roll 6 is taken out as it is, there is no fear that the trailing end will roll back, and the winding can be started immediately by rotationally driving the winding shaft end, and an excellent winding start end can be obtained.

Fig. 6.7 also shows a case in which a sheet s with one side of the adhesive side is wound, or a leader (cutting paper) // is inserted at the end of the sheet roll of the sheet roll B.

The leader// is seat S with the support beam raised as shown in Figure 6.
, is the position 1 in the figure directly to the OI to cut? :Press it on i or stick it on the desired position in advance and cut it at that position.

The sheet S2 in Figs. 8 and 9 does not have an adhesive surface. In this case, double-sided adhesive tape (commercially available) 1.2 is pasted on the sheet S2 on the top surface of the support beam g, and when cut, the tape /2 is cut in half. The state in which each sheet S is cut and adhered to the sheet roll 6 and the winding shaft S is shown.

Although the invention has been described above with reference to a small number of embodiments, the present invention can be varied and applied in a variety of ways based on well-known techniques and ingenuity of mechanical designers without changing its gist. The portion gα may be expanded and contracted by a spring /3 as shown in FIG. 1θ.

This invention dramatically improves the accuracy of winding the cut end of a sheet to start winding without reducing the productivity of a winding device that mass-produces fixed-quantity sheet rolls.

First, the cutting is performed between a blade that runs through the gap between the sheet rolls and roll shafts, and a support beam that extends into the entrance of the gap, and the sheet is cut with the position closest to the cut point restrained by the corner of the support beam. Compared to the conventional method of supporting the sheet at a distance and pressing it from one side, the accuracy of cutting and the quality of the cut have been dramatically improved.

Moreover, the side surface of the support beam, which also serves as a cutting wheel support and a restraining material, is used as an elastic pressure part, so when the sheet is cut and pushed into the gap between the sheet roll and the winding shaft, the elastic pressure is applied. The pressure part deforms to fit the shape of the gap and is pushed in, and the cut end of the sheet is pressed tightly against the circumferential surfaces of the sheet rolls and winding shafts on both sides of the gap, making it possible to ideally process the cut ends of the sheet. .

The equipment includes a cutting wheel holder, a seat clamp groove,
It is extremely simple and easy to implement, since only a support beam with an elastic pressure section is added which also serves as a cut end presser.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of an example of a winding device to which this invention is applied, Fig. 2 is an explanatory diagram of an embodiment of this invention in which the main part of desk 1 is enlarged, and Figs. is an explanatory diagram of the state before and after cutting the sheet according to the embodiment of the present invention when is an adhesive surface,
Figure 5 is an enlarged explanatory diagram of the state when the sheet is cut;
Figure 7 is an explanatory diagram before and after cutting when the leader is sandwiched between the ends of the adhesive sheet, Figures 8 and 9 are explanatory diagrams before and after cutting when double-sided adhesive tape is placed on the sheet and cut at that position, Figure 1
FIG. 0 is an explanatory diagram showing another example of the elastic pressurizing part of the movable support beam. ri...cutting blade, za...movable support beam, 9...fluid pressure cylinder of drive mechanism. Patent applicant Kataoka Machinery Co., Ltd. Agent
Patent Attorney Fuku 1) Shin Gyoma Agent Patent Attorney Fuku 1) Take Tsuen Agent Patent Attorney Fuku 1) Kenzo-2 [

Claims (1)

[Scope of Claims] A device that winds up a fixed amount of a belt-shaped sheet to make a sheet roll, replaces the roll shaft with a new roll shaft, cuts the supplied sheet and separates it into old and new roll shafts, and comprises A movable support beam that supports the sheet when cutting the sheet in the gap with the shaft, and a drive mechanism that initially advances the support beam to the entrance of the gap and pushes it into the gap after cutting the sheet, The support beam has a sheet receiving surface on its tip end and an elastic pressure section on its side surface, and when cutting the sheet, this pressure section restrains the sheet from being pressed against the sheet roll and winding shaft, and after cutting, it enters the gap. A winding sheet switching device when replacing a winding shaft, characterized in that both cut ends are pressed against a sheet roll and a winding shaft, respectively.