JPS63101250A - Method of adhering to core at web cutting end and device thereof - Google Patents

Abstract

PURPOSE:To prevent a wind-starting part of a web roll from getting in the way of steppedly curling as well as to check the occurrence of a scrapping web, by making adhesive fixation of a web cutting end to an adhesive member on a core so as to be performed in a state of right alignment. CONSTITUTION:With a web W cut, there is formed with a free end 43 between adhesive part of the web W and the web cutting end S. After web cutting, a web pressing device 18 is further moved forward to downwardness from the front step pressing position, and as shown in an imaginary line, it moves to the rear step pressing position, whereby the cutting free end 43 is pressed to an adhesive member T, thus adhesion takes place. At this time, a presser block 24 of the pressing device 18 has already come into contact with an outer surface of a core 6 in the front step pressing position. Therefore, the pressing device 18 comes to move down as rocking as a whole, while a press surface 29 of the block 24 is slidingly moved as pressing the web free end 43 along the adhesive member T, performing the rear step adhesion. With this constitution, the web free end 43 is stuck fast to the adhesion member T, under pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method and apparatus for adhering a cut end of a web to the outer periphery of a winding core when the web is continuously wound.

[Conventional technology]

As a conventional technique for this type of continuous web winding device, it is widely known to use a turret machine as shown in Fig. 2 (documents unknown). The proposed method can be found in Japanese Utility Model Application Publication No. 132355/1983 proposed by the present applicant.

In FIG. 2, in this type of device, a plurality of turret arms 4 are each equipped with winding cores 6, 6, and a web W is wound around one of the winding cores 6 into a roll, and when the web roll is fully wound, The turret arm 4 is rotated to change the winding core position, and then the web W is cut by the cutter 36 as shown in FIG.
The cut end S of the web is pressed against and adhesively fixed to a new air-wound core 6, and the web is wound around the air-wound core 6 again into a roll. T is adhesive tape.

The web W is cut from the above-mentioned replacement of the winding core position.

And the series of operations leading to adhesion of the cut ends S of the web.

done automatically. In particular, with regard to adhesion of the cut ends of the web, before cutting, the presser roller 6 is circumscribed to the air-wound core 6 so that part of the web W is aligned with the circumferential surface of the air-wound core 6, and the air-wound core 6 and the web roll (full) are bonded together. The empty winding core 6 of the web path between the winding core)
The web W is cut by the cutter 36 at the offset position, after which the air-wound core 6 is driven to rotate in a backward direction, and the web is pressed and fixed to the adhesive tape T by the presser roll 16.

[Problem that the invention seeks to solve]

However, in the conventional device, the cut edge S of the web and the adhesive tape T
I was unable to match the positions correctly.

An unbonded free cut end portion 43 is formed between the bonding position and the web cut end S. In particular, since it is not preferable for the cutter 36 to come into contact with the winding core 6, this free cutting end 43 tends to become long. For this reason, as shown by the imaginary line in FIG. 7, when the first core 6 rotates, the free end 43 cannot follow the rotation and becomes bent, and the web W that is wound up and subsequently rolled is The outside of the free end portion 43 was deformed into a step shape, and was curved as in the 8th case. There is no other choice but to dispose of this bent portion, and a considerable length of web is wasted for each winding core 6. In particular, in the case of thin webs, the area subjected to deformation was large.

[Purpose of the invention]

The present invention has been proposed in order to solve the above-mentioned problems, and it is possible to adhesively fix the cut end of the web to the adhesive member on the first core in a correct alignment state,
The main purpose of this method is to prevent the winding start end portion of the web roll from being bent in a step-like manner, and to suppress the generation of web that is subject to disposal.

Another object of the present invention is to automatically and reliably bond cut ends of a web with a simpler mechanism.

Yet another object of the present invention is to allow webs to be cut correctly and adhered to adhesive members accurately regardless of the type of material from which they are formed.

[Means for solving problems]

Summary of the present invention The web W is guided and supported in close proximity to the adhesive member T fixed to the first core 6, and first, a part of the web W is pressed against the adhesive member T by the web pressing means 18 and bonded. After cutting the vicinity of this web adhesive part with the cutter 36, the web pressing means 18 is further advanced to adhesively fix the web free end 43 between the adhesive part and the web cut end S to the adhesive member T. This is what I did. That is, the present invention is characterized in that the web W is bonded to the adhesive member T by advancing the web pressing means 18 in two stages.

〔Example〕

1 to 6 show embodiments of the device according to the invention.

In FIG. 2, the outline of winding the web W is explained as follows.
The web W sent out from the previous processing step passes through a feeding and retention device 1, an adhesive mechanism 2, and is wound up into a roll onto a core 6 on a turret disk 3. When the roll diameter reaches a predetermined value, the turret arm 4 rotates 180 degrees around the rotation axis 5 to exchange the positions of the new air-wound core 6 and the web roll R, and the feed retention device 1 stops further web feeding. In this state, the web W is cut by the adhesive mechanism 2, and the cut end S of the web is wound around the air-wound core 6 located on the left side in the figure. Thereafter, web feeding is resumed and the winding core 6 is rotationally driven, thereby continuously winding the web W into a roll.

While the feeding and retention device 1 stops feeding the web, the plurality of dancer rollers 7 rise to retain the web W sent out from the processing process. When web feeding is resumed, the rollers 7 descend to prepare for the next stay.

In FIG. 3, the turret disk 3 includes a cross-shaped turret arm 4 supported by a pivot shaft 5. As shown in FIG.

Core holding means 9 for fixing the core 6 to the tip of each arm 4 and guide rollers 10 are alternately arranged. The rotating shaft 5 can be rotated in both forward and reverse directions by a drive mechanism (not shown) located within the machine base 11. The core holding means 9 is also rotationally driven by a drive mechanism not shown. The turret disk 3 is stopped in a state where the line connecting the winding cores 6 and 6 is horizontal, and the web W is placed on the empty winding core 6.
is wound up.

An adhesive member T made of double-sided adhesive tape is fixed to the circumferential surface of the winding core 6. By attaching the winding core 6 to the winding core holding means 9 and pasting the adhesive member T in accordance with the position indicator provided on the turret arm 4, the positions of the core 6 and the web row I-R can be swapped. When this is done, the adhesive member T comes to an adhesive position P facing an advancing area of the presser block 24, which will be described later. The adhesive member T can also be formed by applying an adhesive.

The above-mentioned adhesive mechanism 2 is provided on a fixed wall 12 adjacent to the machine stand 11. In FIG. 4, the adhesive mechanism 2 is attached to the fixed wall 1.
2 includes a front and rear frame 14 which is vertically swingably supported via a shaft 13, and a frame cylinder 15 (see FIG. 3) which swings the frame 14. A presser roller 16 is provided in the middle of the frame 14, and a roller cylinder 17 that swings the presser roller 16 vertically between a standby position and an operating position.
will be established. Web pressing means 18 is provided on the front end side of the frame 14.
A pressing drive means 19 is provided for driving this forward and backward.

The web pressing means 18 includes two vertically long wooden guide frames 21.
a guide frame 22 that supports the guide frame 22; a front and rear slide frame 23 that slides along the guide frame 21;
The presser block 24 is fixed to the lower end of the presser block 24.

The guide frame 22 has an upper end supported on the frame 14 via a shaft 25 so as to be swingable. In order to keep the posture of the web pressing means 18 with respect to the frame 14 constant, a regulating rod 26 is provided on the outside of the frame 14 as shown in FIG. A pair of stopper screws 27 are sandwiched between them, and a spring 28 that biases the regulating rod 26 against the stopper screw 27 on the left side as viewed in the figure.
and. Due to the biasing force of the spring 28, the web pressing means 18 is stably suspended at a position where the regulating rod 26 contacts the left stopper screw 27.
can swing slightly between the position where it contacts the stopper screw 27 on the right side.

A pressing surface 29 for pressing the cut web end S against the circumferential surface of the winding core 6 is formed in an inclined shape on one side of the tip of the presser block 24, and a silicone material is applied from the pressing surface 29 to the tip surface to improve slippage. A membrane is coated. This pressing surface 29 may be formed into a concave curved surface along the circumferential surface of the winding core 6.

In FIG. 4, the pressing drive means 19 is the roller cylinder 1.
It consists of a presser cylinder 30 disposed above the presser cylinder 7, a bell crank 31 connected to the operating rod of the presser cylinder 30, and a link plate 32. The bell crank 31 and the slide frame 23 of the web pressing means 18 are connected by a link plate 32. The pressing drive means 19 now moves the web pressing means 18.

■ The standby position shown in Fig. 4, in which the slide frame 23 is in the raised position.

■ The front-stage pressing position shown in FIG. 6, in which the presser block 24 advancing downward comes into contact with the winding core 6.

(2) Driving operation is performed in three states: from the solid line state in FIG. 1 (first stage pressing position) to the second stage pressing position (state shown by the imaginary line in FIG. 1), which advances further downward.

5 and 6, a guide rod 33 and a rodless cylinder 34 are installed between the front and rear slide frames 23 of the web pressing means 18, a stand 35 is fixed to the lower part of the rodless cylinder 34, and a cutter 36 is attached. . The cutter 36 protrudes below the block 24 through a slit 37 formed at the tip of the presser block 24, and is reciprocated in the front and back direction by the rodless cylinder 34 to move the web W in the width direction perpendicular to the feed direction. Cut into.

In this way, when the cutter 36 cuts the web W by moving it from one side to the other side in the width direction, the web W
Even if the material from which the web is formed is easily expandable and deformed, difficult to cut, or extremely thin, it can be cut accurately, and the cut edge S of the web will not tear diagonally or become meandering. do not have.

A guide means 39 is provided so that the web W passes near the winding core 6 when the adhesive mechanism 2 is swung to the operating position shown in FIG. As the guide means 39, the fourth
As shown in the figure, the web W consists of a guide roller 40 supported at the tip of the frame 14 and a guide roller 41 provided below near the shaft 13 that supports the frame 14. support.

Next, to explain the effect, Fig. 3 shows the web roll R.
After replacing the air-wound core 6 to the right and the new air-wound core 6 to the left, the adhesion mechanism 2 is shown driven by the frame cylinder 15 from the standby position shown by the imaginary line to the operating position. In this state, the air-wound core 6 is held stationary by the winding-core holding means 9, and the adhesive member T has already been fixed at one location on its circumferential surface so that it comes to a predetermined adhesive portion Hp as shown in FIG. There is. The web W is guided and supported by guide rollers 40 and 41, and the adhesive member T
It is stopped while passing near and above.

From this state, the press roller 16 swings downward by the roller cylinder 17, and as shown in FIG. The web W is sandwiched and fixed between the pressing roller 16 and the winding core 6.

Subsequently, the slide frame 23 is lowered by the presser cylinder 30, and the web pressing means 18 is placed in the front-stage pressing position. As a result, the presser block 24 also moves downward together with the slide frame 23, and its pressing surface 29 comes into contact with the outer surface of the adhesive member T via the web W, as shown in FIG. 1゛ and perform the pre-adhesion. At this time, it should be noted that only the upper half of the adhesive surface of the adhesive member T adhesively fixes the web W, and the lower half remains in a non-adhered state.

After that, the rodless cylinder 34 operates to cut the cutter 3.
6 runs in the width direction of the web W to cut the web.

This cutting position is set at a position closer to the adhesive part of the web W adhered to the adhesive member T on the downstream side in the web feeding direction. In reality, the lower end of the web bonded portion and the cutter 36 are located very close to each other with a horizontal distance of approximately 8 mm. In addition.

The full winding core 6, that is, the web roll R located on the right side performs the final winding, and after the tail end of the web W is fixed to the circumferential surface of the roll, the web roll R is unrolled from the turret arm 4. Then, it is replaced with a new air-wound core 6 and the adhesive member T is fixed thereon.

On the other hand, by cutting the web W, there is a free end 4 between the adhesive part of the web and the cut end S of the web, as shown in FIG.
3 is formed. After cutting the web, the web pressing means 18 is further advanced downward from the front-stage pressing position and moves to the rear-stage pressing position as shown by the imaginary line in FIG. It is glued.

On this occasion.

The presser block 24 of the web pressing means 18 is already in contact with the outer surface of the winding core 6 in the pre-stage pressing position. Therefore,
The web pressing means 18 as a whole moves downward while swinging around the shaft 25 against the urging force of the spring 28, and the pressing surface 29 of the presser block 24 presses the web free end along the adhesive member T. Sliding movement is performed while pressing the portion 43 to perform the subsequent adhesion. As a result, the web free end portion 43 is pressure-bonded to the adhesive member T, and the web cut end S is bonded in such a manner that it does not curl up. At this time, the cut end S of the web should not protrude from the adhesive member T as much as possible.

Thereafter, the presser roller 16 and the web pressing means 18 return to their original standby state, and the entire adhesive mechanism 2 returns to its standby position, and then web feeding is resumed and the core 6 is rotated clockwise. The winding core 6 is wound up.

[Another example]

In the above embodiment, the cutter 36 is moved together with the web pressing means 18, but this is not necessarily necessary.
It is also possible to adopt a structure in which the cutter 36 is driven independently between a standby position and an operating position.

The web W is also cut using a method in which the canter 36 swings up and down to push the web W across the width at once. In order to absorb the difference in the distance between the winding core 6 and the winding core 6, there is no need to swing the presser block 24 to release it in the latter pressing position.

〔Effect of the invention〕

As explained above, in the present invention, while the web W is held along the circumferential surface of the winding core 6 by the presser roller 16, the web pressing means 18 is first advanced one step to adhere a part of the web W. After the web W is pressed and bonded to the member T, the web W is cut near the bonded portion by the cutter 36, and then the web pressing means 18 is further advanced to cut the bonded portion of the web W against the bonding member T and the web cut end S. The free end portion 43 formed between the two ends can be bonded to the adhesive member T.

Therefore, the free end portion 43 produced by cutting the web W can be bonded to the adhesive member T reliably and accurately.

It is possible to prevent the winding start end of the web roll R from being skewed in a stepped manner, and it is possible to suppress the generation of web portions that are to be discarded due to skewing.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the device according to the invention. FIG. 1 is a partially vertical front view of the main part showing the adhesion state of the cut end of the web. FIG. 2 is a schematic front view illustrating the entire device. Figure 3 is a front view of the adhesive mechanism and turret board. FIG. 4 is an enlarged front view with a part of the adhesive mechanism cut away. FIGS. 5 and 6 are front views of main parts showing operating states, respectively. 7 and 8 show a conventional device. FIG. 7 is a front view of the main part showing the adhesion state of the cut end of the web. FIG. 8 is a partially enlarged front view illustrating the condition of the web roll. 6... Winding core. 9... Core holding means. 16... Presser roller. 18... Web pressing means. 19...Press drive means. 24... Presser block. 29...Press surface. 36...Power 7ri. 39... Guide means. 43...Free end. P...Gluing position. S... Web cut end. T...Adhesive member. W...Web.

Claims (2)

[Claims] (1) A step of fixing the adhesive member T at a proper position on the circumferential surface of the winding core 6, and positioning and holding the winding core 6 so that the adhesive member T faces a predetermined adhesion position P, and above the adhesion position P in the web feeding direction. a step of pressing the web W against the circumferential surface of the winding core 6 on the side and guiding and supporting the web W so as to pass near the adhesive member T; and pressing the web W against the winding core 6 side so that the web W A pre-adhesion step of press-bonding a part of the web W to the adhesive member T; a step of cutting the web W at a position close to the adhesive part of the web W adhered to the adhesive member T on the downstream side in the web feeding direction; and the cut web A method for adhering a cut end of a web to a winding core, comprising: a subsequent adhesion step in which a free end 43 of the W is crimped onto an adhesive member T. (2) A core holding means 9 that holds the core 6, a guide means 39 that guides the web W to pass near the adhesive member T fixed at a proper position on the circumferential surface of the core 6, and a predetermined bonding position. On the upper side of P in the web feeding direction,
A presser roller 16 that presses and pinches the web W against the circumferential surface of the core 6; a web presser 18 that presses the web W against the core 6 side and presses it onto the adhesive member T; and a web presser 18 in a standby position. The web W is cut by the pressing driving means 19, which moves forward and backward from this standby position to a front-stage pressing position in which it advances toward the winding core 6 side, and to a rear-stage pressing position in which it advances further toward the winding core 6 side from this front-stage pressing position. Cutter 36
By advancing the web pressing means 18 to the pre-pressing position, a part of the web W before cutting is pressed to the adhesive member T, and the web W adhered to the adhesive member T under this pressure is pressed. The web W is cut by the cutter 36 at a position close to the adhesive part on the downstream side in the web feeding direction, and after cutting the web W, the web pressing means 18 moves from the front pressing position to the rear pressing position, thereby cutting the web W. A device for bonding a cut end of a web to a winding core, characterized in that a free end portion 43 is crimped to an adhesive member T.