JPS6023020B2 - Web butt splicing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to flexible belt-like materials (hereinafter collectively referred to as webs) such as paper, synthetic resin films, and metal foils.

), and particularly relates to a structure for reliably transporting the cut subsequent web to a splicing machine. Generally, in production equipment using webs, a subsequent web is often connected to the rear end of a preceding web that is currently being processed, and processing is performed continuously.

For this purpose, conventionally, for example, U.S. Pat.
BACKGROUND OF THE INVENTION Butt joint devices, such as those described in US Pat. No. 745,464, are known. By the way, in this type of web butt splicing device, the new leading end of the subsequent web cut by the cutting machine is transferred to the splicing machine while being kept in a butt state with the trailing weave of the preceding web. There is a serious problem. Conventionally, as a solution to this problem,
A vacuum suction hole that also serves as an air outlet is bored in the cutting drum on the trailing web side of the cutting machine, and the leading edge of the trailing web is held by the vacuum suction hole to a certain extent after the web has been cut. (Japanese Patent Publication No. 48-461 and Japanese Patent Publication No. 49-12329). However, as criticized in Japanese Unexamined Patent Publication No. 50-1981 No. 670, this measure is not very effective for weak and thin webs or charged webs, and high-speed bonding is particularly difficult. For this reason, the publication proposes that the trailing web be attached to a cutting drum that also serves as a joining drum, and that the cut ends of the trailing web be joined while being adsorbed to the drum that also serves as the joining drum. Therefore, although this structure eliminates the drawbacks of the former joining device, when the device is operated, the web is not in contact with each drum while it is running, which tends to cause scratches on the web. Yes, and Tokusaki Sho 50-1846
It is stated that a winding mechanism is used in this case, but even if this is used to accelerate the subsequent web, the trajectory drawn by the rotation of the drum and the trajectory of the web during welding will be different. Because of the difference in tension, large tension fluctuations are applied to the weave, which limits the joining speed. The purpose of the present invention is to ensure that even thin webs and charged webs can be reliably transferred to the splicing machine without requiring unreasonable configurations for the cutting machine or splicing machine, without adversely affecting the web, and, moreover, even when the web is currently being processed. To achieve a high-speed web butt splicing device capable of cutting and splicing without reducing the running speed of the web. This purpose, according to the invention, comprises a cutting machine and a splicing machine located along the web path, the leading web and the trailing web are overlapped and cut by the cutting machine; The entire web butt splicing device according to the present invention is shown, and this web butt splicing device includes a first frame 3 movable along rails 1 and 2 laid in the web conveyance direction; a second and a third installed on the foundation adjacent to the frame 3;
It has frames 4 and 5.

The movement of the first frame 3 along the rails 1 and 2 is performed by driving a motor 6 installed on the foundation. For this purpose, the slider 6A fixed to the side surface of the first frame 3 is formed with a female thread, and one end of the male thread 6B that is screwed into the female thread is connected to the rotating shaft of the motor 6 by a coupling 6C. It is held by a bearing 6D installed above. Therefore, since the rotation of the female screw 68 rotated through the coupling 6C by the drive of the motor 6 is converted into a linear force by the female screw of the slider 6A, the first frame 3
In a web butt splicing device that transfers the trailing end surface of a leading web straightly cut along the rails 1 and 2 to a splicing machine and joins the trailing web while keeping them in butt state, the web path is It is in charge of cutting by being placed between them. Immediately after the rotational direction of both cutting members of the pair of cutting drums, a hole is provided to regulate the conveying direction of the following web of the cutting machine. This is achieved by a web butt splicing device in which the cut end of the trailing web is guided in a floating state by compressed air blown out from these holes. Hereinafter, one embodiment of the present invention shown in the drawings will be described.

Moving.

Further, a web stripping machine A for feeding a leading web X and a trailing web Y is attached to the first frame 3. Further, inside the frame 4, a trailing web drawing machine B is roughly installed which takes over the leading edge of the trailing web Y from the trailing web original roll Y held by the web drawing machine A. Above the succeeding web drawing machine B, a machine is installed facing the path of the leading web X formed by guide rollers 7 and 8, and both webs
A leading web descaling machine C is installed which removes the remaining part of the leading web x from the machine after cutting. And inside the frame 5, there is a web path 0 shown with or without success in FIG.
A cutting machine D and a joining machine E are installed adjacent to each other along the web path Z. Therefore, pressure-sensitive tape is adhered to the butt portions of both webs x and Y, which are cut into butts in the following procedure, in the splicing machine E, and sent to the processing device through the guide and nib roll 9. Ru. 1st
As shown in the figure, the web drawing machine A installed on the first frame 3 is constructed so that it can be rotated by keying the central portions of the frames 3B and 3C with a shaft 3A.

A leading web X and a trailing web Y are held at both ends of the frame 3B, and web guide rolls 3D are held at both ends of the frame 3C. Next, a drive system for rotating the frames 38, 3C and for drawing out the webs X, Y, will be explained based on FIG. 38' is a motor that rotates the shaft 3A via the reduction gear 3F and rotates the frames 3B and 3C.

The drive system for feeding both webs X, Y, held at both ends of the frame 38, includes a variable motor 10 for accelerating the nine rolls of webs, a clutch 11, and a brake for applying tension to the fed webs. 12 and a chucking shaft 12A for chucking the core of the web. And variable motor 10, clutch 11
The brake 12 is fixed to a support 13, and a slide bearing 14 is attached to the support 13, and the brake 12 is configured to move along a guide rod 15A attached to a support 15 fixed to one frame 38. However, the moving force is provided by a air cylinder (not shown) fixed to the lower surface of the support base 15. In addition, by moving the chucking shaft 16A with another air cylinder 16 installed on the support stand 16B fixed to the other frame 38, the winding core 1
Hold and leave 7. Next, when the leading web X, is running low and it is time to pull out the following web Y, the variable selection motor 10 is driven, the clutch 12 is activated, the chucking shaft 12A is rotated, and the first web Y, is to be pulled out. Rotate at a speed commensurate with the peripheral speed.

Of course, the brake 13 is not operated at this time. However, after the drawing is completed, the motor 10 is stopped and the brake 13 is activated in order to apply tension to the ejected web. In this case, as shown in FIG. 2, the leading end y of the trailing web Y is formed into a tongue shape so that it can be taken up by the trailing web puller B, and the leading end y of the trailing web Y is formed into a tongue shape during acceleration.
Adhesive tape 19 to prevent it from coming off the subsequent web original volume Y.
The proximal end portions are fixed at a and 19b. As shown in the third figure, according to the invention, the trailing web drawing machine B includes a drawing drum 20 and a driving roller 21, which are mounted on the frame 4.

The drawing drum 20, which is located close to the trailing web original winding Y, is rotatably supported by a slider 22 that is slidable along a guide rod 21' shown in FIG. This slider 22 is moved toward the subsequent web original winding Y by a cylinder device 23 fixed to the outer surface of the frame 4. As shown in the third figure, the inside of the drawer drum 20, which has vacuum suction holes 24 in its circumferential surface, is divided into two chambers: a vacuum chamber 25 and a normal pressure chamber 26.
Although not shown, this vacuum chamber 25 is connected to a vacuum source via a swivel joint at the end of the drawer drum 20. Further, an output shaft of a transmission 28 driven by a motor 27 shown in the second figure is connected to the drive roller 21. Then, the drawing speed of the succeeding web drawing machine B is controlled to match the running speed of the preceding web. A plurality of endless belts 31 each having a plurality of ventilation holes 30 on its surface are hung between the pull-out drum 20 and the drive roller 21 . These endless belts 31 are attached to a tension pulley 3 of a tension arm 33 whose base end is supported on a fulcrum shaft 32.
Can be multiplied by 4. Therefore, the endless belt 31 is always kept under tension by the pneumatic sillage device 35 engaged with the tension arm 33. The trailing web drawing machine B has a vacuum box 36 located in a space surrounded by the endless belt 31.

A vacuum chamber 37 connected to a vacuum source has a cover plate 37a having a slot at a position corresponding to the moat end belt 331, and acts to adsorb the following web Y through the ventilation holes 30 of the inorganic belt 31. do. Further, the swing roll 20B is attached to the fixed shaft 20C in the pull-out roll 20 via a bearing, and provides the effect of preventing scratches on the web after being joined as will be described later. Below the slider 22 is an air nozzle 2 that regulates the leading end y so that it is advantageous when pulling out the trailing web leading end y.
0A is installed. At the top of the frame 4,
A leading web removal machine C is mounted to remove the remaining part of the leading web X to the outside of the machine.

The leading web remover C includes a vacuum box 38 which is opened substantially downwardly toward the leading web x, and the internal space of this vacuum box 38 is connected to a vacuum source as required. As shown in FIG. 3, inside the vacuum box 38, “
A large number of ejection rollers 39 are arranged in a Y" shape, and two pairs of ejection rollers 39a and 39b face the discharge port 4.
An endless belt 41 for discharging the leading web x folded in two out of the vacuum box 38 is hung between them. A driven sprocket 42a indicated by a chain line is fixed to the shaft end of each of the removal rollers 39, 39a, 39b, and a chain 44 driven in the direction of arrow a by a driving sprocket 43a is connected between these driven sprockets 42a. ' is multiplied by Therefore, after the cutting process described later, the remaining part of the preceding web X is pulled into the vacuum box 38 by the vacuum suction force applied to the vacuum box 38 and the rotational driving force of the removal roller 39, and is folded into two. and is discharged from the discharge port 40. The frame 5 includes
A cutting machine D is provided with a pair of cutting drums 42 and 43 facing each other at the top and bottom with the web path Z in between, and a cutting machine D that is adjacent to these cutting drums 42 and 43 in the web conveyance direction and sandwiching the web path Z therebetween. A welding machine E equipped with a pair of welding drums 44 and 45 facing each other at the top and bottom is assembled.

For synchronous movement, the shafts of the cutting drums 42, 43 have mutually meshed gears 46, and also the welding drums 44, 45.
A shaft end is provided with mutually meshed gears 47, and these gears 46, 47 are connected to the drive motor 4 via a gear train 48.
9 rotates in the same direction. Details of the cutting machine ○ are in Section 4.
As shown in the figure. Each cutting drum 42, 43 has a cutting blade 52 whose protrusion amount can be adjusted using shield bolts 50, 51.
, 53, and these cutting blades 52, 53 are fixed to the surfaces of the corresponding cutting drums 42, 43 by tightening bolts 54, 55. Further, each of the cutting drums 42 and 43 has a hollow pipe 5 extending in the width direction of each of the cutting drums 42 and 43 at a rear position in the rotational direction of the cutting blades 52 and 53.
I support 6,57. These warm air pipes 56, 57 are provided with a number of injection holes 58 for blowing compressed air near the tips of the corresponding cutting blades 52, 53. Said marriage pipe 5
One end 56a, 57a of 6, 57 is the cutting drum 42, 43
Compressed air is supplied to these ends 56a, 57a through swivel joints 59 (shown in the second figure) provided at the axial ends of these cutting drums 42, 43. At this time, after the webs X and Y are cut by blowing compressed air from the holes 58, the leading ends of the following webs are reliably transferred to the joining part by preventing them from curling or adhering to the cutting drums 42 and 43 due to static electricity. In addition, the lower cutting drum 4
3 is made in a cylindrical shape so as to serve as a guide for the leading end of the following web Y, but the upper cutting drum 42 does not need to be like this, and on the contrary, it is made large in size so as not to become an obstacle to the movement of the web. It is manufactured in the shape of a rectangular tube. Details of the joining machine E are shown in FIGS. 3 and 5. The bonding machine E includes a lower bonding drum 45 made in a cylindrical shape and an upper bonding drum 44 made in a shape that ensures a weave passage, but these bonding drums 44 and 45 are substantially Since they have the same structure, the bonding drum 44 shown in FIG. 5 will be representatively explained. The splicing drum 44 is equipped with a tape stand 62 that supports the tape, and this tape stand 62 extending in the length direction of the splicing drum 44 is provided with a large number of noble holes 63. The bonding drum 44 is externally connected to a vacuum source (not shown) via a notch 65 provided in the rotating shaft 64. With this structure, the tape stand 62
It becomes possible to attach and secure the bonding tape 67 with the adhesive side facing outward on the surface 62a. The splicing drum 44 has punch holes 70 on both sides of the tape stand 62. The hole 7 is connected to a compressed air chamber 72, and the compressed air chamber 72 is supplied with compressed air from an air pipe 73 led from the swivel joint 66. With this structure, when the webs X and Y are joined, the web ends with curls (broken line in Figure 5) are corrected as shown by the solid lines in Figure 5
This prevents wrinkles from occurring at the joint due to the curl of the Y.
The illustrated weave butt joining device has the weave passage Z
A web guide is provided along the lower part of the web.

This web guide is used for subsequent web drawing machine B and connecting machine D.
a first guide 74 located between the cutting drum 43 of the cutting machine D and a second guide 75 located between the cutting drum 43 of the cutting machine D and the joining drum 45 of the joining machine E;
and a third guide 76 located at the rear.
These guides 74 and 76 have a second guide 75 connected to a movable plate 77.
Since the configuration is the same except for the point that it has a guide and an operation guide, the second guide 75 shown in FIG. 6 will be used as a representative in the explanation. In FIG. 6, the second guide 75 includes a guide plate 79 fixed to a mounting bracket 78, and a movable plate 77 swingably connected to the front end of the guide plate 79 by a hinge 80. According to the present invention, the surfaces of the guide plate 79 and the movable plate 77 are
It is formed into a waveform with wave heights aligned in the web feeding direction. The movable plate 7 can be moved by the actuating cylinder device 81.
In the front green of 7 is a compressed air pipe 82 connected to a compressed air source.
is fixed, and this compressed air pipe 82 is provided with a hole 83 through which compressed air can be injected to the web at an appropriate angle so as to levitate the web guided along the surfaces of the guide plate 79 and the movable plate 77. It will be done. With such a configuration of the web guide, the web to be transported is transported while being floated by compressed air without coming into contact with the surface of the guide plate 79. Note that a second compressed air pipe 82A is provided at the lower part of the compressed air pipe 82 to cause the tip of the subsequent web Y to bypass the circumferential surface of the cutting drum 43. The third guide 76 is for guiding the preceding web X,
During the bonding operation, the leading waveguide x is nipped and conveyed by the guide/nip roll 9 and the drive roll 86, so it is not particularly necessary to have a waveform shape like the first and second guides 74 and 75. Next, the actual butt joining operation by the web butt joining apparatus described above will be explained.

Prior to the butt joining operation, the joining tape 67 is attracted to the tape stand 62, and the movable plate 77 of the second guide 75 is depressed to the position shown in FIG.

After that, the motors 16 and 27 are started, and the trailing web original winding Y and the endless belt 31 are rotated in the directions of arrows b (of course, reverse rotation is also possible) and c, and these members are rotated at the running speed of the leading web X. It will be accelerated to have a suitable Zhou Liao. In this case, the circumferential speed of the pull-out drum 20 is V, and the following web original roll Y
, the circumferential velocity of
Good results have been obtained by satisfying the relationship ≦V2≦V-2 (m/min). Incidentally, since the trailing web leading end y of the trailing web original roll Y and the trailing web tip y are fixed with the adhesive tapes 19a and 19b, the trailing web original roll Y is acceleratedly rotated without loosening. After such a preparatory step, when the leading web X is running low and the following web source winding Y and the endless belt 31 have reached the desired speed, the following web source winding Y and the drawing drum of the following web drawing machine B are activated. 20 are relatively approached as shown in FIG.

At this time, the trailing web tip y rotates, and before it reaches the part closest to the pull-out roll 20, the pull-out nozzle 2
Due to the effect of 0A, y is corrected as shown by the solid line in FIG. 7 and ideally enters the nearest bush, and by the action of the vacuum force within the pull-out roll 20, y is attracted and pulled out. Thereafter, the following web original roll Y and the drawing drum 20 are separated from each other as shown in FIG. It passes over the first guide 74 and is forcibly conveyed to immediately after the cutting drum 43 by a jet from a nozzle compressed air pipe 82A provided below the movable plate 77 of the second guide. This nozzle is particularly effective for thick webs. Further, after the succeeding web is pulled out, the swing roll 20B is rotated as shown in FIG. After joining is completed, the path of the web is as shown in Figure 11, but in this process, the web conveyance speed is usually controlled by a drive roll (not shown) installed in the processing device. At this time, even if there is a speed difference with the circumferential speed of the endless belt 31, the web is quickly separated from the endless belt 31 so as not to cause scratches on the web. Subsequently, the cylinder devices 81 and 84 (shown in the first figure) are operated, and the movable plate 77 of the second guide 75 is extended to the position shown in FIG. 9.

At the same time, the leading web x is driven by a drive roller 86 driven by a motor 85 at a precisely regulated speed. Meanwhile, the started motor 49 causes the cutting machine ○
And the splicing machine E starts rotating, and the superposition of the two webs X, Y
is cut by the shearing action of the cutting blades 52 and 53. In this case, the cut ends of both webs
The new tip of the cutting drum 42, 43 does not lose stability.
Although it has a tendency to adhere to the circumferential surface of the pipes 56, 57
This is removed by a jet of compressed air. That is, the new tip of the subsequent web Y is connected to the winding pipes 56, 5.
The compressed air from 7 prevents the web from curling and adhering to the cutter due to static electricity, ensuring that it is oriented onto the second guide 75 and reaches the splicer 8 . FIG. 10 shows the positional relationship of each member when the leading web X and the trailing web Y are joined. When the butt ends of both webs X and Y reach the splicing machine, the tape stands 67 of the splicing drums 44 and 45 are rotated to a position where they squeeze the butt ends from above and below, and the squeezing force of the tape stand 62 causes the welding to take place. Tape 67 is attached to both webs X. Glued to both sides of the butt ends of the Y. In this way, the leading end of the trailing web Y is joined to the trailing end of the leading web X in a butt state. Thereafter, the web joined from both sides with the joining tape 67 will be transported towards a subsequent processing device. When the joining tape 67 is pressed, if the webs X and Y have curls, their ends may float up, causing wrinkles or inaccurate abutting conditions. However, in the apparatus of the present invention, since the roller hole 70 is provided, the web X,
Since the Y ends are straightened, even webs with strong curls can be joined accurately. Simultaneously with the above operation, the leading end of the subsequent web Y cut by the cutting machine D is dropped by its own weight as the cutting drum 43 rotates, and is removed below the cutting machine ○ as shown in Figure 10. be done.

The remaining part of the preceding web It is discharged and removed from 40. In addition, Tokuko Sho 48-Shigeru 461 and Tokko Sho 5
As described in Japanese Patent No. 0-I 670, a butt-joining device is conventionally known in which the cutting drum of a cutting machine and the joining drum of a joining machine are combined, but the present invention has such a structure. It is obvious that it can also be applied to

As is clear from the above description, according to the present invention, since the air hole 58, that is, the air outlet is provided, even a weak, thin web or a charged web can be reliably fed into the splicing machine. I can do it.

Further, according to the present invention, since an air jet is used to guide the cutting end of the subsequent web, the cutting/splicing drum can be moved only when and where necessary, as in the above embodiment. A structure that allows the web to come into contact with the web can be adopted, and there is no risk of applying excessive force or scratches to the web.
Since the roller holes 58 are provided in both cutting drums, the cut end portion of the following web is guided in a floating state as both cutting drums rotate, so that tension fluctuations are not applied to the web. Further, by adopting the new structure of the present invention, high-speed running processing becomes possible, and processing conditions for subsequent processing steps are not changed for bonding.

[Brief explanation of drawings]

Fig. 1 is an overall elevational view of the web butt splicing device according to the present invention with a part cut away, Fig. 2 is a plan view of the same butt splicing device, and Fig. 3 is a main part of the same butt splicing device. 4 is an enlarged sectional view of the main parts of the cutting machine, Fig. 5 is an enlarged developed sectional view of the main parts of the joining machine, Fig. 6 is an enlarged slope view of the area around the second guide plate, and Figs. FIG. 11 is an explanatory diagram of the operation of the above butt joint device. A...Web bran drawing machine, B...Following web drawing machine, C...
...Advanced web removal machine, D... Cutting machine, B...
...Splicer, ×...Advanced web, Y...
...Subsequent web, Z... Web passage, 42,
43... Cutting drum, 52, 53...
Cutting blade, 56, 57... Warming pipe, 58...
Floor hole. Figure 1 Figure 2 Figure 4 Figure 3 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure l0

Claims (1)

[Claims] 1 Equipped with a cutting machine and a splicing machine located along the web path, the leading web and the trailing web are overlapped and cut by the cutting machine, and the trailing end face of the cut leading web and the leading end face of the trailing web are butted. In a web butt splicing device that transfers the web to a splicing machine and splices the web while maintaining the same state, the web is cut immediately after the direction of rotation of both cutting members of a pair of cutting drums, which are placed between the web passages and are in charge of cutting. A web butt splicing device that is provided with nozzle holes that regulate the conveyance direction of the subsequent web and guides the cut end of the subsequent web in a floating state using compressed air blown from these nozzle holes.