JPS58157663A - Automatic web take-up roller - Google Patents

Abstract

PURPOSE:To aim at an unattended reel core change-over operation by providing a both surface adhesive tape piece application mechanism, etc. which rotates with its peripheral speed parctically equal to the conveying speed of a web. CONSTITUTION:The captioned unit is provided with a both side adhesive tape piece application mechanism 4 which rotates with its peripheral speed practically equal to the conveying speed of a web W which abuts on a conveying path P of the web, and applies a both side adhesive tape piece 43 on to the surface of the web W in such a way that its tape side is turned so as to be brought into contact with the surface of the web W, a cutting mechanism 5 which is equipped with a cutting edge to be turned at the peripheral speed equal to the conveying speed of the web for cutting the web W at the leading edge position of the both side adhesive tape piece 43, and a holding guide mechanism 6 which guides the leading part of the succeeding web W cut by the cutting mechanism 5, being held a by holding member, and sets the both side adhesive tape piece 43 staying on the web W on the surface of a new reel core 13.

Description

[Detailed Description of the Invention] The present invention cuts the web, such as paper or plastic film, when it reaches the groove winding, while the web is continuously conveyed without stopping (2). The present invention relates to an automatic web winding device that automatically performs a core switching operation for winding onto a new core.

Various devices have been proposed for this type of automatic web winding device. A typical example is to use a #-shaped cutter to cut the web, and place an arc-shaped web guide on the surface of a new core to form a web path between them. However, there is a device in which the cut web is guided through a web path by a jet of air and wound around a new core.

However, in such devices, the leading edge of the web is not fixed, so it does not come into close contact with the surface of the new winding core, and the leading edge of the web is cut into a triangular wave shape, so when it is wrapped around the next web, the web is The leading edge of the web often breaks, and since there is an air jet in the web path, the conveyance of the web becomes unstable, resulting in wrinkles at the leading edge of the web during winding. .

For webs such as toilet paper where quality (3) does not need to be given much importance near the core, the above-mentioned apparatus may be sufficient, but if the web is coated with a light-sensitive emulsion layer on its surface, In the case of photographic film, etc., where the leading end of the web is broken, if winding is continued with the leading edge of the web broken, the shape of the broken part will be transferred to the web after the cutout, impairing the flatness of the web, and also causing pressure capri. It can also be a cause. Furthermore, if wrinkles occur in the initial stage of winding, they will similarly cause plastic deformation in subsequent parts of the web, causing a decline in the quality and yield of the entire web. Losses in the initial stage of winding eventually lead to large losses in terms of money.

Conventionally proposed devices are unsuitable for winding photographic film because they often cause scratches on the web or cause #R scratches on the film due to static electricity, and lack reliability in switching operations. For this reason, in conventional photographic film winding, web conveyance is temporarily stopped when changing the core, and the switching operation is performed manually. Therefore, equipment called an Aggie mulleter is required to store the web while the winding device is stopped, and this also hinders labor savings. Furthermore, with conventional equipment, automation increases the equipment cost for the simple task of cutting the web and winding it around the core. Devices that enable so-called double-sided winding, such as double-sided winding, have had drawbacks such as being extremely complex.

The present invention has been made based on the above circumstances, and its purpose is to make it possible to unmanned the work of changing the core of the web, and to transport the web without stopping the device. Winding of photographic film, etc., where core switching work can be performed with high reliability, and there is no risk of web tip folding or wrinkling, and where the quality of the wound product near the core is important. Another object of the present invention is to provide an automatic winding device that can be suitably used for the following purposes.Furthermore, it is an object of the present invention to provide an automatic winding device that has a simple structure, has low equipment cost, and is capable of winding on both sides.

The feature of the present invention is that a piece of double-sided adhesive tape facing the web conveyance path (5) is rotated and attached to the web surface so that the tape surface is in contact with the web surface. and a cutting blade that cuts the web at the leading edge position of the double-sided adhesive tape piece and rotates at a circumferential speed substantially equal to the conveying speed of the web. A holding and guiding mechanism that holds and guides the leading part of the subsequent web cut by the cutting mechanism using a holding member, and adheres the double-sided adhesive tape piece of Web-F to the surface of a new core. It consists of the following.

Examples of the present invention will be described below.

FIG. 1 is a front view showing an outline of an automatic web winding device according to an embodiment, and W indicates a web such as a photographic film. This web W is transported through the web transport path P at a constant transport speed.
KG is running, and the web conveyance path P continues to the turret type winder l. In this turret type winder 1, the cross-shaped turret arm 11, which is attached to rotate on one axis of rotation, has winding cores 12, 13 (6) and two guide rollers 14 at both ends thereof. , 15 are attached, and in this state, the web W is wound around one of the winding cores 12.

The web conveyance path P includes a guiding and feeding mechanism 2 that performs a guiding operation and a feeding operation of the web W by switching from the upstream side to the downstream side, and a leading part of the web W when the winding core is changed. A pull-back mechanism 3 that pulls back the web W to adjust the position of the web W, and a double-sided adhesive tape sticking mechanism (hereinafter referred to as the "applying mechanism") that applies a double-sided adhesive tape piece (hereinafter referred to as the "tape piece") to the traveling web W. ) 4. A cutting mechanism 5 for cutting the web W, and a holding and guiding mechanism 6 for guiding the leading part of the subsequent cut web W to the surface of a new winding core 13 are provided.

The guide feed mechanism 2 includes an arm 23 whose base end is attached to an air cylinder 21 and swings around a shaft 22, a guide roller 24 attached to the tip of this arm 23, and a guide roller 24 that is attached to the tip of the arm 23. The lead-in roller 25 is provided opposite the guide roller 24 via the web conveyance path P (7) so as to contact the guide roller 24 when descending to form a two-pronged roller portion. The shaft end is connected to an electric motor via an electromagnetic clutch (not shown).

The pull-back mechanism 3 consists of an arm 33 whose base end is attached to an air cylinder 31 and swings around a shaft 32, and a guide roller 34 attached to the tip of this arm 33. is lead-in roller 2
As shown in FIG.
Even if the guide roller 34 is raised to the position 1 indicated by the two-dot chain line, the guide roller 34 is still positioned below the lead-in roller 25.

The pasting mechanism 4 includes tape piece holding parts 71 that hold tape pieces at the top thereof and are opposed to each other via the web conveyance path P.
．． It consists of a first rotating arm 7 and a second rotating arm 7I, each having a shape 71'. These rotating arms 7.7
I is an axis Y extending in the width direction of the web W, and an axis Y extending in the width direction of the web W,
A circular locus t4, t4', which is centered on Yl and extends around the circumference of a circle having a tangent to the surface of the web W, at a speed that matches the conveyance speed of the web W at a contact point a with the web conveyance path P. Shaft portions 72, 72' for rotation
When the web W is wound around a new winding core 13 in the counterclockwise direction in FIG. When the tape piece is positioned on the part 71 and the web W is wound clockwise in FIG. ' Tape piece holding part 711K7
:- The segment will be positioned. When attaching a tape piece to one side S of the web W, the tape piece holding portion 71' of the second rotating arm 7' serves as a receiving surface; When attaching a tape piece to the other surface S1, the tape piece holding portion 71 of the first rotating arm 7 serves as a receiving surface I11. Since the rotary arms 7, 7' have the same mechanical structure (9), the first rotary arm 7 and the second rotary arm 7 have the same mechanical structure (9).
This will be explained according to the diagram. The shaft portion 72 has a hollow portion 721 extending in the axial direction, and the shaft end is connected to suction means (not shown) via a rotary joint (not shown). An air guide path 73 is formed from the hollow portion 721 toward the top of the rotating arm 7, and this air guide path 73 is connected to a suction chamber 74 provided near the top. The tape piece holding portion 71 is composed of an arcuate surface portion 711 forming a top surface, and a side surface portion 712 that continues to both ends of the arcuate surface portion 7110. A large number of suction holes 75 are bored. Here, since the tape piece is adhered to the web W by the nip between the rotating arms 7 and 7', the surface of the arcuate surface part 711 of the tape piece holding part 71 is coated with an impact material such as neoprene rubber. It is preferable to form a covering layer made of a cushioning material. Figure 1,
In FIG. 2, the 43μ tape piece and 45 indicate gold paper. The structure of the tape piece 43 and interleaving paper 45 used in this example is shown in Figure 3 (
10) Explained by A, the tape piece 43 is attached to the support 4
Adhesive layers 432 and 433 are formed on both sides of the paper 31, and the interleaving paper 45 has a support 4510 and peeling layers 452 and 453 made of QC7 recon or the like.

In order to hold the tape piece 43 and the interleaving paper 45 in the f-fold piece holding part 71 of the rotating arm 7, as shown in FIG. It is preferable that both ends 434 and 435 of the tape piece 43 be located at the same position as or inwardly from the positions corresponding to both ends 713 and 714 of the circular arc surface part 711. When attaching the piece 43 to the web W, no force is applied from the tape piece 43 to the bent ends 454 and 455 of the interleaving paper 45, so the interleaving paper 4
This is preferable because it is possible to reliably suction and hold the tape piece 43 to the tape piece holding portion 71 and transfer only the r-p piece 43 to the web W. When the ends 434 and 435 of the tape piece 43 are positioned outward from the positions corresponding to the ends 7i3 and 714 of the arcuate surface portion 711, when the tape piece 43 is attached to the web W (11), the interleaving paper 45 is attached to the tape. This is not preferable because it may peel off from the piece holding portion 71.

The cutting mechanism 5 includes a first canter rotor 51 and a second cutter rotor 51', which are provided to face each other via the web conveyance path P, and these cutter rotors 5.
These cutter rotors 51 and 51' are comprised of cutting blades 52 and 52' extending over the entire width of the web W that protrudes upward from the upper back of each of the cutter rotors 51 and 51'. is rotated in a circular locus that extends around axes X and XI extending in the width direction of the web W and around a circle having tangents to the surface of the web W.
Ii1 is added to a frame not shown in the figure. Here, the holding guide mechanism 6 is attached to the first cutter rotor 51 and the second canter rotor 511, respectively, and the structure of the cutter rotors 51 and 511 and the holding guide mechanism 6 are Since they have the same configuration, the cutter rotors 51, 51' and the holding east-west machine 'js6 provided on one side of the web conveyance path P will be explained with reference to FIGS. 4 and 5. At both ends of the first cutter rotor 51, tubular shaft bodies 53A and 53B having the axis X as the central axis are provided.
, 53B are bearing units 54A, 53B, respectively.
It is rotatably supported by frames FA and FB via 54B. This frame fi”A.

Between the FBs, the above-mentioned guide feeding mechanism 2 and pullback mechanism 3 are provided.
．． A tape piece sticking mechanism 4 and the like are arranged, and the shafts of each mechanism are attached. A ventilation passage 532 is formed inside the cutter rotor 51 and communicates with a cavity 531 of one shaft body 53B, and this ventilation passage 532 extends from the cavity 531 to the axis X K ? It extends Ej and is bent 90 degrees from the center of the canter rotor 51 to reach the surface of the canter rotor 51. The cavity 53
1? "i, The shaft end of the shaft body 53B is connected to a compressed air source, also not shown, via a rotary joint, which is not shown.

In FIG. 1, 55 and 55' are guide rollers.

As shown in FIG. 6, the cutter rotor 51°51'
53 shaft bodies, 53&'i, gears G5 that mesh with each other
．． G5', and the (b) movable a (1
3) The shaft portions 72 and 72' of the arms 7 and 71 are gears 07 and 0? that mesh with each other, respectively. ' is fixed. These four gears G5, G5', (, +7.07') all have the same number of teeth and the same radius, and are gear q7 related to the first rotating arm 7 and the 20th cutter rotor 51'.
The gear G5' is interlocked with the drive gear GIJ connected to the electric motor M which is controlled at a constant speed and meshes with the gear G5'.

Here, the first rotating arm 7 is driven symmetrically with the second rotating arm 71 with respect to the web conveying path P, and the cutting blade 521 of the second canter rotor 51' is driven relative to the web conveying path P. Since the cutting blade 52 of the first cutter rotor 51 is driven symmetrically, the first rotary arm 7 and the second canter rotor 51, which are located on one side with respect to the web conveyance path P, are driven symmetrically. Only the relative positional relationship with the cutting blade 52' will be explained.

The radius of the circular locus t5', which is the moving path of the tip of the cutting blade 52', is equal to the radius of the circular locus t4, which is the moving path of the region of the rotary arm 7 in which the tape piece is held. The rotating arm 7 is placed on standby at a point 1tQ1 where the end 713 on the front side (14) of the arcuate surface portion 711 returns at an angle θl with respect to the contact point a on the web conveyance path P and the axis Y, and at this point ftQ
1, passes through a position Q2 that coincides with the contact point a, and then returns to the original position Q1 via a position Q3 which is advanced by an angle θ2 with respect to the Y axis. On the other hand, the cutting blade 52 is placed on standby at a position Q 1 l where its tip is returned at an angle θ1+02 with respect to the contact point X'l1111'i' on the web conveyance path P,
From this position Qll, it returns to the original position Ql+ via a position Q 2 + advanced by an angle θl with respect to the XI axis and a position Q31 that coincides with the contact point. The drive gear GD is rotated at the same speed as the conveyance speed of the web W before the cutting blade 521 passes the position Q 21 , and thereafter is driven to pass the position Q3' at that speed. The position Q 21 related to the cutting blade 52 corresponds to the point in time when the rotary arm 7 starts attaching the tape piece to the web W, and from this position Q 21 to the contact point along the circular path t5'. The arc length of is equal to the length of the web conveyance path P from the contact point a to the contact point.

The holding and guiding mechanism 6 includes a first holding and guiding mechanism (15) on one side S of the web W that adheres the tape piece to the surface of the core, and a first holding and guiding machine that adheres the tape piece (15) on the side S1 of the web W to the surface of the core of all the tape pieces on the other side S1 of the web W. It consists of a second holding and guiding machine to be bonded, but in this embodiment, the functions of the first holding and guiding machine are exchanged with each other, as will be clear from the operation described below. but,
The first holding guide device has the same mechanical configuration, and the first holding guide device has a surface on which the cutter rotors 51, 51' are rotated, on brackets 56, 56' that protrude rearward from the back surfaces of the cutter rotors 51, 51'. Detail 6 on a plane parallel to
Support arms 62 , 62 ′ added to rotate around 1° 611 and support arms 62 , 62 ′
A hollow box body (hereinafter referred to as a "pressing drum") as a holding member is provided at two ends of the web W to extend over the entire width of the web W.
That's what it means. )63.63', this suppression drum 6
3 and 63' have surfaces that are similar to the cutting blades 52 and 52.
Pressing surfaces 631, 631 along the circular locus of rotation of '
' is formed. The lower ends of the support arms 62, 62' are attached to brackets 57, 57' extending from the lower ends of the cutter rotors 51, 51' with tension springs 6.
4.64' and is attached to the first canter rotor 51 in the counterclockwise direction in the figure, the second canter rotor 5x'
The additional support arms 62' are restrained clockwise in the figure. The support arm 6
A protrusion 621.621' is formed near the upper end of the cutter rotor 5 when the holding guide mechanism 6 is not operated.
Stomper 65, 6 installed on the back of 1.51'
5' is pressed. Here the stopper 6
5. As shown in FIG. 5, it is preferable to provide a shock absorbing material 651 made of neograin rubber or the like on the top of ti5'. Reference numeral 66 in FIG. 5 is a stopper for regulating the stop position of the rotated suppression drum 63, and a shock absorbing material 661 is also placed on the top of this stopper 66.
It is preferable to provide Note that this stopper 66 is
Not shown in the figure. To explain the suppression drum 63 with reference to FIG. The ventilation Mli532 in the cutter rotor 51
As will be described later, the suppression drum 63 connected to the web W is sandwiched between the web W and the core 13, and the web W is fixed to the core 13 via the tape piece by the contact pressure.
The surface layer on the pressing surface 631 is preferably made of a material having cushioning properties, such as neograin rubber. As shown in FIG. 4, a shaft member 6 is attached to one end of the pressing drum 63.
9 is fixed, and a cam 7 is attached to the tip of this shaft member 69.
An arrow 691 is rotatably supported. These are omitted in FIG. 5.

A cam plate 692 is disposed inside the frame FA in a section where the swinging movement of the pressure drum 63 is required, as will be described later. 692, and as a result, the pressing drum 63 is moved to a protruding position (shown by a solid line in FIG. 5) where the pressing surface 631 protrudes outward from the circular locus t5 of the cutting blade 52, and from the pressing (18). The pressure surface 631 performs an anti-oscillation movement between a storage position (indicated by a two-dot chain line in FIG. 5) where the pressure surface 631 is stored inward from the circular locus t5 of the cutting blade 52 (t'). That is, when the cutter rotor 51 rotates from the position shown in FIG.
As the cam follower 691 slides along the cam plate 692, it rotates from the protruding position to the storage position 1 against the suppressing force of the pressing drum 631 and the spring 64, and the back of the suppressing drum 63 moves toward the cutting blade 52. After passing near the contact point on the circular locus t5, press 1 and press 6.
3 is returned to the protruding position by the spring 64,
molded into a shape.

In an embodiment with such a configuration, the core on which the web W is wound is switched in the following manner. Web W is core 1
2, the cylinder rond of the air cylinder 21 in the guide and feed mechanism 2 is retracted, and the guide roller 24 is separated from the lead-in roller 25.
The lead-in roller 25 is disconnected from an electric motor (not shown) by a clutch (not shown), and functions as a free roller (19). At this time, the air cylinder 31 of the pullback mechanism 3
The cylinder lock is moving forward and the guide row 234 is in the first position.
The web W is in the lowered position as shown by the solid line in the figure, and the web W passes through the lead-in roller 25 and the guide rollers 34, 55.1.
4 is wound around the winding core 12. On the other hand, the tape piece 43 to be pasted next is set in the first rotating arm 701 of the pasting mechanism 4 - the tape holding portion 71 . Here, the winding core 12
When it is detected by an appropriate means that the winding of the web W is nearing the end, the electric motor for driving the lead-in roller 25 starts rotating, and when the rotation speed corresponds to the conveyance speed of the web W, the clutch is turned off. acts, and the driving force of the electric motor is transmitted to the lead-in roller 25. Next, the guide feed mechanism 2
The air cylinder 21 is actuated to lower the arm 23, whereby the guide roller 24 and the lead-in roller 25 sandwich the web W. At this time, since the circumferential speed of the cut-in roller 25 matches the conveyance speed of the web W as described above, the formation of a nip roller portion with the lead-in roller 25 prevents the web W from slipping. On the other hand, in the turreno type winding machine l, a winding core 1 on which the web W is next wound by an electric motor (not shown).
3 is accelerated until its peripheral speed matches the conveyance speed of the web W. In the winding roll formed by winding the web W around the winding core 12, the tension is controlled by an electric motor (not shown) connected to the winding core 12 before the nip roller section is formed. After the formation of , the winding is controlled to be constant tension. Next, roll core 1
2 finishes winding the web W, an appropriate means detects the end r of winding and drives the electric motor M, and this driving force is transmitted to the gears q7. q
71 and the gears Gs and C35' of the cutting mechanism 5. As a result, the first rotating arm 7 starts rotating from the position Ql, and the tape piece 43 held thereon is accelerated until it reaches a speed equal to the transport speed of the web W, and then decelerates after passing through the -it position Q21Q3 of this speed. and position QL again
Return to Along with this, the second rotating arm 71 is also rotated in synchronization, and these rotating arms 7 and 7' move through the tape piece 43 at the contact point aVc at a speed equal to the conveyance speed of the web W. and nips the web W, whereby the tape piece 43 held by the first rotating arm 7 is affixed to one side S of the web W.

Since a release layer 452 is formed on the interleaf paper 45, the adhesive force between the adhesive layer 432 on one side of the tape piece 43 and the web W is stronger than the adhesive force between the adhesive layer 433 on the other side of the tape piece 43. The tape piece 43 is stronger than the adhesive force with the paper 45, and therefore the tape piece 43 is easily peeled off from the interleaf paper 45 and transferred to the web W.

On the other hand, by rotating the gear G5', the cutting blade 521 of the cutter rotor 51' of M2 is moved to the position Q1.
It begins to rotate from + and its tip passes through positions Q 2 + and Q 31 at a speed that matches the conveyance speed of the web W,
After the tape piece of the web W is adhered to the winding core 13, it is decelerated and returns to position Q i 1 again. Along with this, the cutting blade 52 of the first cutter rotor 51 is also rotated in synchronization, but the cutting blade 521 is at the position Q21 when it starts pasting on the nib W (22) of the tape piece 43, and this position Q Since the arc length from 21 to the contact point immersed in the circular locus 15' is equal to the length of the web conveyance path P between contact points a and b, the cutting blade 52
, 52' pass through the contact point, and the web W is cut at the leading edge position of the tape piece 43. When the cutting of the web W is completed in this way, a limit switch (not shown) is activated to issue a signal indicating the completion of cutting, and in response to this signal, the cylinder ring of the air cylinder 31 of the pull-back mechanism 3 retreats, thereby causing the arm 33 and the guide roller 34 rises to the position shown by the two-dot chain line. The amount of swing of the pull-back mechanism 3 up to the guide roller 34 is determined by the amount of swing of the lead-in roller 25 as shown in FIG. The bus length from the intersection point of the web W to the intersection point B of the web W at the guide roller 34 at the solid line position, and the bus length from the intersection point to the intersection point B via the intersection point C of the web W at the guide roller 34 at the two-dot chain line position. The difference from the bus length is above (23
) is approximately the size of the distance. On the other hand, the suppression drums 63 and 63' are placed in the retracted position and rotate between the contact points of the circular locus t 6 and 16' that they draw in the protruding position, as shown in FIG. It is placed in the extended position as shown in FIG. The subsequent web W, which has been pulled back upward after cutting, is continuously fed out by the lead-in roller 25, so that the leading part of the web W advances downward in an unrestrained state, but before the cutting of the web W is completed. Compressed air from a compressed air source (not shown) is supplied to the second
The air is ejected from the air outlet 67 of the suppression drum 63' associated with the cutter rotor 51', and as a result, the leading portion of the web W appears as if stuck to the pressing surface 631 of the pressing drum 63 associated with the tenth cutter rotor 51. This is the state in which it is held by the suppression drum 63. As the cutter rotor 51 rotates, the suppression drum 63 protrudes while holding the leading portion of the web W from the other surface S1. The winding core 13, which is to be newly wound, moves up to f and then rotates along a circular locus t6.
(However, in FIGS. 7 to 9, for convenience, the winding core 13 is shown outside the circular locus t6.)

), as shown in FIG. 9, the entire 1-nib piece on one side S of the web W is guided and pressed onto the surface of the core 13, and is then bonded to the tape piece. 4
3, it is fixed to a new winding core 13. When the web W continues to advance after being cut and is guided to the surface of the winding core 13 by the press drum 63, the leading end of the web W reaches the press surface 6 of the press drum 63, as shown by the dotted line in FIG.
31, the web W will be positioned ahead of the road by the distance above, but the pullback 8A mechanism 3 will cause the web W to
Since it is pulled back by a length corresponding to , it will be located at the front end of the suppression surface 6310. As the cutter rotor 51 rotates further, the suppression drum 63 moves to the new winding core 13.
When it is separated, a limit switch (not shown) is activated to issue a fixation completion signal, and in response to this signal, the cylinder rod of the air cylinder 31 of the pull-back mechanism 3 moves forward (25) and guides it [the cola 34 is guided by the solid line in Figure 1]. is lowered at position 1. The fixed optical r signal may be emitted until the leading edge of the web W wraps with the web W of the next station, so-called winding. When the winding is finished, a new winding core 13 is inserted.
It rotates at a circumferential speed that is slightly higher than the conveyance speed of the web W, absorbs the slack between the nip roller portion formed by the guide roller 224 and the lead-in roller 25, and the new core 13, and applies appropriate tension to the web W. When the nip occurs, the 7-cylinder rotor of the air cylinder 21 of the guide feed mechanism 2 is moved back to raise the guide roller 24 to release the nip state, and a clutch (not shown) is operated to release the lead-in roller 25. is released from the driving force of the electric motor and placed in a free state.

Further, the winding speed of the new winding core 13 is controlled to match the conveyance speed of the web W at the time when the two-tube state is released. Note that after cutting the web W, the motor for driving the winding of the winding core 12 decelerates according to a predetermined deceleration curve and stops. This completes one cycle of the winding core switching operation, and the turret arm 11 is rotated (26) to a position where it is approximately horizontal in the counterclockwise direction in FIG. The winding roll is removed, a new winding core is attached, and the turret arm 11 is rotated counterclockwise again at the normal winding position l.

When winding the web W around the winding core 13 in the open direction in the figure, the 20th rotating arm 71 holds the 1-pipe piece, and from this the tape piece is pasted on the other surface 81 of the web W. In addition, a suppression drum 63 related to the tenth cutter rotor 51
TP compressed air is injected from the air outlet, and the leading portion of the web W is pressed against the pressure surface 631' of the suppression drum 63' of the second cutter rotor 51'.

Accordingly, the present invention attaches a piece of tape to one side of the web to be conveyed, cuts the web at the front # position of the tape piece, and also cuts the leading portion of the cut web by the holding member of the holding and guiding mechanism. Since it is configured to hold and guide the web and adhere the tape piece of the web to the surface of a new core, the conventional manual core switching operation can be performed automatically (27) with high reliability. Furthermore, since the tape pieces are applied and the web is cut instantly, the holding member of the holding and guiding mechanism is operated at a speed that matches the web conveyance speed, thereby allowing the web to be moved without temporarily stopping the device. It is possible to continuously change the winding core while it is being transported, which eliminates the need for attached equipment such as an achievator. Moreover, since the pasting mechanism is configured to affix the tape piece to the web by rotating the tape piece at the same speed as the conveyance speed of the web, the tape piece is reliably and effortlessly peeled off from the interleaf paper and affixed to the web. Further, since the cutting blade cuts the web at a speed matched to the web conveyance speed, the web can be cut easily and sharply. Further, the leading part of the subsequent cut web is guided to the winding core, so that the leading part of the web is conveyed in close contact with the winding core through the tape piece, and therefore, when winding, the next web is securely attached to the winding core. There is no risk of the leading edge of the web being folded due to being wrapped by the web, and the conveying condition of the leading part of the web on the surface of the core is stable, so there is no risk of wrinkling of the leading part of the web. It can also be used for winding photographic film, etc., where the quality of the winding material near the core is important. As in the embodiment, the pasting mechanism is constituted by a pair of rotating arms facing each other via the web conveyance path P, and the holding and guiding mechanism is constituted by a first holding and guiding machine and a second holding and guiding machine. By doing so, it is possible to obtain a so-called double-sided winding device with a simple configuration.

Furthermore, in the above embodiment, the following effects are obtained in addition to the effects of the present invention.

Circular locus t at the point of contact from the position of the cutting blades 52, 52' at the start of pasting the tape piece 5. The arc length of ', t5' is equal to the length of the web conveyance path P from the point of force to the contact point a, and the cutting blades 52 and 52' are Since it is moved at a speed equal to the transport speed of the web W, the web W can always be reliably cut at the leading edge position of the tape piece.

The cutting blades 52, 52' of the cutting mechanism 5 and the holding guide machine (2
9) The suppression drums 63 and 63' of the structure 6 are rotated by the common rotary cutters 51 and 51', and the pressure drums 63 and 63' are moved inward from the circular locus 15 and 15' related to the cutting blades 52 and 52'. Since it is configured to perform an α swinging motion between the retracted storage position and the outward protruding position, the cutting mechanism 5 and the holding guide machine $6
The structure of the cutting blades 52, 52' and the pressing drums 63, 63 in the protruding position can be simplified.
Since the pull-back mechanism 3 is provided to pull back the web W in the direction opposite to the traveling direction by a path length corresponding to the distance from
3 (63), it can be reliably positioned at the tip of the winding core, and it can be brought into close contact with the winding core.

Compressed air is ejected from the suppression drum 63' facing one side S of the web W, and the leading part of the web W is pressed against the pressing surface 631 of the pressing drum 63 facing the other side 8' of the web W, so that the leading part of the web W is stuck as if stuck. Since the web W is guided to the surface of the winding core 13 along the co-moving locus of the pressing drum 63 and pressed (30), the unrestrained web W after cutting is reliably conveyed to the winding core 13. As a result, the holding and guiding operation can be performed with higher reliability, and the leading portion of the web W can be brought into close contact with the surface of the winding core 13.

Although the embodiments capable of double-sided winding have been described above, the automatic web winding device according to the present invention is advantageous as a configuration exclusively for single-sided winding. In this case, the pasting mechanism 4 may be configured only by the first rotating arm 7, and the holding and guiding mechanism 6 may be configured only by the first holding and guiding machine. Specifically, for example, the first In the figure, a roller is used as the receiver instead of the 20th rotating arm 710, a so-called fixed blade is used in which the cutting blade 521 is fixed to the frames FA and FB without using the second cutter 51', and instead of using the suppression drum 63'. Alternatively, the air jet nozzle may be fixed to the frames FA and FB.

In addition, in the present invention, the pull-back mechanism is not necessarily necessary, and if it is not used, for example, a hollow part (31) for curing the suction is placed on the surface that is a component of the holding and guiding mechanism. The cutting blade may be provided so as to protrude freely from the back surface of the cutting blade, and the leading part of the web may be sucked by the hollow part and then guided to the surface of the winding core.

In the present invention, the leading part of the web may be attracted to the holding member using static electricity, or may be held between the holding members and guided to the optical surface of a new winding core.

As described above, according to the present invention, it is possible to make the web core switching operation unmanned, and it is also possible to perform the core switching operation with high reliability while the web is being conveyed without stopping the device. It is an object of the present invention to provide an automatic winding device that can be suitably used for winding photographic film, etc., where the quality of the winding material near the core is important, without the risk of the web tip being bent or wrinkled. Further, it is possible to provide an automatic winding device that has a simple structure, has low equipment cost, and is capable of winding on both sides.

[Brief explanation of drawings]

Fig. 1 is a front view showing an outline of an embodiment of the present invention, Fig. 2 is a front view showing the rotating arm shown in Fig. 1, and Fig. 3A shows the structure of the double-sided adhesive tape piece and the mount. Explanatory drawing, Fig. 3B is an explanatory drawing showing how the double-sided adhesive tape piece and gold paper are attached to the rotating arm shown in Fig. 1, and Fig. 4 shows the cutting mechanism and holding guide mechanism shown in Fig. 1. A plan view showing a part of the fifth
The figure is a construction drawing showing a part of the cutting mechanism and holding guide mechanism shown in Fig. 1, Fig. 6 is an explanatory drawing showing the relative positional relationship of the rotating arm and the cutting blade, and Figs. 7 to 9 are FIG. 2 is an operation explanatory diagram showing the operations of the cutting mechanism and the holding and guiding mechanism, respectively. l...Turret type winder 12.13... Winding core 2... Guide feed mechanism 24...
- Guide roller 25 - Lead-in roller 3... Pulling back mechanism 4... Double-sided adhesive tape piece pasting mechanism 43... Double-sided adhesive tape piece 45, 45'... Interleaf paper 5... Cutting mechanism 51
, 51'... Cutter rotor 52, 52'... Cutting blade 6... Holding guide mechanism (33) 62, 62'... Support arm 6: 3, 63'... Suppression drum 631, 631' ... Suppression surface 67 ... Air jet port P ... Web conveyance path W ...
・Web 7, 71 ... Rotating arm 71
, 71'...Double-sided adhesive tape piece holding portion 74...Suction chamber 75...Suction hole G5.05', G7. G
7' - Gear GD... Drive gear Fig. 3 A Fig. 4 Fig. 9

Claims (1)

[Claims] 1) Facing the web conveyance path, a piece of double-sided adhesive tape is rotated at a circumferential speed substantially equal to the web conveyance speed so that the tape surface is in contact with the web surface and attached to the web surface. a moving double-sided adhesive tape piece applying mechanism; a cutting mechanism that cuts the web at the leading edge position of the double-sided adhesive tape piece and includes a cutting blade that rotates at a circumferential speed equal to the conveying speed of the web; and this cutting mechanism. A holding and guiding mechanism is provided for holding and guiding the leading part of the subsequent web by a holding member and adhering the double-sided adhesive tape piece on the web to the surface of a new core. Features of automatic web winding device.