JPS6056613B2 - Web butt splicing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a web butt splicing device used in various web processing devices, and particularly to a web guiding means.

In general, long strips such as paper, synthetic resin sheets, metal foils (hereinafter collectively referred to as webs) are used.

) In production equipment using a new web, a new web is often processed without joining the trailing end of the preceding web that is currently being processed. For this reason, conventionally, for example, U.S. Pat.
Various web butt joining devices are used as shown in Japanese Patent Publication No. 745464, Japanese Patent Publication No. 48-38461, and Japanese Patent Publication No. 49-1234. By the way, such a web butt splicing device requires a guide device to guide the web in a desired direction.
Conventional guide devices have had the problem that weak, thin webs or charged webs get caught on guide plates, making it difficult to convey them.

In order to solve the problem of the guide device of the conventional web butt splicing apparatus, the present invention narrows the web path in order to cut the leading web and the trailing web to be spliced to the web while both webs are running. means for holding a joining member rotatably provided on at least one side of the web path for joining the cut ends of both webs; a joining means provided on the other side of the web path and having means for cooperating with the joining member to press the web; and a joining means provided between the cutting means and the joining means for cutting and joining. The trailing web, which has previously been pre-traveled past the position of the cutting means, is discharged out of the web path before the joining means, and the cut end of the trailing web after being cut by the cutting device is placed on the web path. a guide plate having a corrugated surface when viewed from the feeding direction of the web, and a guide means positioned at a leading edge of the guide plate and guiding the web against the guide plate surface. The present invention proposes a web butt splicing device having an air blowing means for jetting compressed air in the direction of floating the web.

Hereinafter, one embodiment of the present invention shown in the drawings will be described.

1 and 2 show the entirety of a web butt splicing device according to the present invention, and this web butt splicing device is movable along rails 1 and 2 laid in the web transport direction. a first frame 3, and second and third frames 4, 5 installed on a foundation adjacent to the frame 3.
Equipped with.

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, a female thread is formed on the slider 6A fixed to the side surface of the first frame 3, 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. The other end is held by a bearing 6D installed on the foundation. Therefore, in the first frame 3, the rotation of the male screw 6B rotated via the coupling 6C by the drive of the motor 6 is converted into a linear force by the female screw of the slider 6A.
Move in a straight line along rails 1 and 2. Further, a web feeding machine A that feeds out a leading web X and a trailing web Y is attached to the first frame 3. Further, inside the frame 4, a succeeding web drawing machine B is assembled which takes over the leading end of the succeeding web Y from the succeeding web original roll Y1 held by the web delivering machine A. A device is installed above the trailing web puller B facing the path of the leading web X formed by the guide rollers 7 and 8, and removes the remainder of the leading web x from the machine after cutting both webs X and Y. A preceding web removal machine C is installed. Inside the frame 5, a cutting machine D and a splicing machine E are installed adjacent to each other along a web bus, that is, a web path z, which is shown cut away in FIG.
Therefore, a pressure-sensitive tape is adhered to the abutting portions of both webs X and Y, which are cut into abutting state by the procedure described below, in the splicing machine E, and then passed through the guide and nip roll 9 to the processing device. Sent out. As shown in Figure 1, the first
The web feeding machine A installed on the frame 3 has a shaft 3A.
The central portions of the frames 3B-3C are pivotally supported by the frame 3B-3C so as to be rotatable.

A leading web X1 and a trailing web Y1 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 3B and 3C and feeding out the webs Xl and Yl will be explained based on FIG. 3E is a motor that rotates the shaft 3A via a reduction gear 3F and rotates the frames 3B and 3C.

The drive system for feeding out both webs Xl and Yl held at both ends of the frame 3B includes a variable motor 10 for accelerating the original web, a clutch 11, a brake 12 for applying tension to the fed web, and It is composed of a chucking shaft 12A for chucking the winding core. Then, the variable motor 10 and the 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 3B. However, the moving force is provided by an air cylinder (not shown) fixed to the lower surface of the support base 15. Further, by moving the chucking shaft 16A using another air cylinder 16 installed on the support stand 16B fixed to the other frame 3B, the core
Hold and leave 7. Next, when the leading web X1 is running low and it is time to pull out the trailing web Y1, the variable speed motor 10 is driven, the clutch 12 is activated, the chucking shaft 12A is rotated, and the circumferential speed of the web original roll Y1 is pulled out. Rotate at an appropriate 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 web that has been drawn out. In this case, as shown in FIG. 2, the leading end y of the trailing web Y is formed into a tongue shape in order to enable the trailing web drawing machine B to take over the web, and during acceleration, the trailing web Y is formed into a tongue shape.
Adhesive tape 19 to prevent it from coming off the subsequent web original volume Y1.
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 pull-out drum 20, which is provided at a position close to the subsequent web original roll Y1, is rotatably supported by a slider 22 that is slidable along the guide roller 2'' shown in FIG. 22 is moved toward the subsequent web original roll Y1 by a cylinder device 23 fixed to the outer surface of the frame 4. As shown in the third figure, the drawer has vacuum suction holes 24 bored in its circumferential surface. Inside the drum 20,
The vacuum chamber 25 is formed into two chambers, a vacuum chamber 25 and a normal pressure chamber 26, and although not shown, this vacuum chamber 25 is connected to the drawer drum 2.
It is connected to the vacuum source through the swivel joint at the end of the 0 shaft. Further, an output shaft of a transmission 28 driven by a motor 27 shown in FIG. 2 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. Between the pull-out drum 20 and the drive roller 21, there are many ventilation holes 3 on the surface.
A plurality of endless belts 31 with open ends are hung.
These endless belts 31 are hung around a tension pulley 34 of a tension arm 33 whose base end is supported on a fulcrum shaft 32. Therefore, the endless belt 31 is always maintained under tension by the pneumatic cylinder 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 endless belt 31, and acts to attract the following web Y through the ventilation holes 30 of the endless belt 31. . Further, a swing roll 20B is attached to a fixed shaft 20C in the pull-out roll 20 via a bearing, which provides the effect of preventing the web from being scratched after being joined as will be described later. Slider 2
Below 2 is an air nozzle 2 that regulates the leading end Y when pulling out the trailing web leading end y.
0A is installed. At the top of the frame 4,
A leading web removing 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 that opens substantially downward toward the leading web X, and the internal space of the vacuum box 38 is connected to a vacuum source as required. As shown in FIG. 3, a large number of exclusion rollers 39 are arranged in a square shape inside the vacuum box 38, and two pairs of exclusion rollers 39a and 39b facing the discharge port 40 are located inside the vacuum box 38.
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 dashed line is fixed to the shaft end of each of the removal rollers 39, 39a, 39i, and a chain driven in the direction of arrow a by a drive sprocket 43a is connected between these driven sprockets 42a. 44 is multiplied. Therefore, after the cutting process, which will be described later, the remaining part of the preceding web It is discharged from the discharge port 40 in this state. The frame 5 includes a cutting machine D equipped with a pair of cutting drums 42 and 43 facing each other at the top and bottom across the web path z, and a cutting machine D that is arranged adjacent to the cutting drums 42 and 43 in the web conveyance direction. A splicing machine E is also assembled, which includes a pair of splicing drums 44 and 45 facing each other at the top and bottom with the web path Z interposed therebetween.

For synchronous movement, the cutting drums 42, 43 have mutually meshed gears 46 at their axial ends, 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. For details of cutting machine D, see Section 4.
As shown in the figure. Each cutting drum 42, 43 has a cutting blade 52 whose protrusion amount can be adjusted by stud 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 blower vibrator 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 blowing vibrators 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 fumarole vibe 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. After the webs X and Y are cut by the blowing of compressed air from the nozzle holes 58, the leading ends of the succeeding webs are reliably transferred to the joining portion by preventing them from curling or adhering to the cutting drums 42 and 43 due to static electricity. Note that the lower cutting drum 43
is made in a cylindrical shape so as to serve as a guide for the leading end of the trailing web Y, but the upper cutting drum 42 does not need to be like this, and on the contrary, it has been reduced in size so as not to become an obstacle to the movement of the web. Manufactured in a square tube shape. Details of the joining machine E are shown in FIGS. 3 and 5. The splicing machine E includes a cylindrical lower splicing drum 45 and an upper splicing drum 44 shaped to ensure a web passage, but these splicing 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 includes a tape stand 62 that supports the tape, and the tape stand 62 extending in the length direction of the splicing drum 44 has a large number of through holes 63 in a plurality of strips. The bonding drum 44 is externally connected to a vacuum source (not shown) via a notch 65 provided in the rotating shaft 64.

Such a structure makes it possible to attach and hold the bonding tape 67 on the surface 62a of the tape stand 62 with the adhesive surface facing outward. The bonding drum 44 has injection holes 70 on both sides of the tape stand 62.

The nozzle hole 70 communicates with a compressed air chamber 72 , and the compressed air chamber 7
2 is supplied with compressed air from an air pipe 73 led from a swivel joint 66. With this structure, when the webs X and Y are joined, the web ends with curls (broken lines in Figure 5) are corrected as shown by the solid lines in Figure 5 The occurrence of wrinkles, etc. at the joint due to curls is prevented. The illustrated web butt splicing apparatus includes a web guide provided along the lower part of the web path Z.

This web guide is connected to the following web drawing machine B and cutting 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 75 have a second guide 75 connected to a movable plate 77.
Since they have the same structure except for the point that they have the same and the actuating device, they will be explained using the second guide 75 shown in FIG. 6 as a representative. 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 have a waveform with wave heights aligned in the web feeding direction in order to prevent a statically charged web or a thin web from adhering to and stopping on the guide plate. It is formed.
A compressed air pipe 8 connected to a compressed air source is provided at the front edge of the movable plate 77 which can be tilted by the actuating cylinder device 81.
2 is fixed, and the compressed air pipe 82 is provided with a nozzle hole that can inject compressed air 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. 83 can be opened. That is, these nozzle holes 8
3 is provided at a position corresponding to the corrugations of the guide plate 79 and the movable plate 77 as shown in the figure, and forms an air flow in the web feeding direction along the corrugation space. With such a configuration of the web guide, the web to be conveyed is not brought into contact with the surface of the guide plate 79 and is conveyed while being floated by compressed air. Note that a second compressed air pipe 82A is provided at the lower part of the compressed air pipe 82 to cause the leading end of the following web Y to pass along the circumferential surface of the cutting drum 43.
The third guide 76 is for guiding the preceding web
, there is no particular need for the second guides 74, 75 to have a waveform shape. 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 Y1 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 to match the running speed of the leading web X. It is accelerated to have a circumferential speed of 0. In this case, the circumferential speed of the pull-out drum 20 is set to V1, and the following web original roll Y
If the circumferential speed of 1 is V2, the relationship should be set as V1>■2, but according to the inventor's experimental results, V1-10
Good results have been obtained by satisfying the relationship ≦V2≦v-2 (m/Min). Note that since the trailing web leading end y of the trailing web original roll Y1 is fixed with adhesive tapes 19a and 19b, the trailing web original roll Y1 is acceleratedly rotated without loosening. After such a preparatory step, when the leading web X is running low and the endless belt 31 reaches the desired speed for carrying the trailing web main roll Y1, the trailing web main roll Y1 and the pull-out drum 20 of the trailing web puller B are removed. They are relatively approached as shown in Figure 7.

At this time, the trailing web leading end 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 closest portion, and y is attracted and pulled out by the vacuum force within the drawing roll 20. Thereafter, the drawing drum 20 is moved away from the trailing web original roll Y1 as shown in FIG. , 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 subsequent web is pulled out, the swing roll 20B is rotated as shown in FIG. 8. After the joining is completed, the web bus will look like the one shown in Figure 11, but during this process,
The conveyance speed of the web is usually controlled by a drive roll (not shown) installed in the processing device, and at this time there is a speed difference between the web conveyance speed and the circumferential speed of the endless belt 31. To provide the effect of quickly separating the web from the endless belt 31 without causing scratches on the web even if the web is touched. 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 depressed 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 D to
And the splicing machine E starts rotating, and both webs X and Y are superimposed.
is cut by the shearing action of the cutting blades 52 and 53. In this case, the cut ends of both webs X, Y, especially the trailing web Y
The new tip of the cutting drum 4-2, 43 does not lose stability.
Although it tends to adhere to the peripheral surface of the fume vibrators 56, 57
This tendency is eliminated by a jet of compressed air from. That is, the new tip of the subsequent web Y is connected to the fume vibrators 56, 57.
The compressed air from the web prevents the web from curling and adhering to the cutting machine due to static electricity, and ensures that the web is oriented onto the second guide 75 and reaches the splicing machine E. Figure 10 shows the preceding web
The positional relationship of each member when the following web Y and the following web Y are joined is shown.

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 adhered to both sides of the butt ends of both webs X, Y. In this way, the leading end of the trailing web Y is joined to the trailing end of the leading web X so as to butt each other.
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 lift up, causing wrinkles or making the butt state inaccurate. However, in the apparatus of the present invention, since the injection holes 70 are provided, the ends of the webs X and Y are straightened by this compressed air flow, so even if the webs are tightly curled, they can be accurately Bonding can be performed. Simultaneously with the above operations,
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
It is removed below the cutting machine D as shown.

Further, the remaining part of the leading web X is sucked into the vacuum box 38 by the vacuum pressure in the vacuum box 38 of the leading web remover C, and is folded in half by the rotational feeding motion of the rejecting rollers 39, 39a, and 39b and is discharged. Discharge from exit 40
removed. As described in Japanese Patent Publication No. 48-38461 and Japanese Unexamined Patent Publication No. 50-84670, a butt splicing device in which the cutting drum of a cutting machine also serves as the welding drum of a splicing machine is known. However, it is clear that the present invention can also be applied to such a structure.

As is clear from the above description, according to the present invention, the surface of the guide plate facing the web is formed in a wave shape, and an air flow layer is formed on this surface. Even if it is a web, it is not only conveyed smoothly, but also the induced flow effect due to the air flow layer can be obtained during high-speed conveyance, and it is also possible to prevent the web from flying up.

Therefore, the difficulty in transporting thin webs or charged webs, which was a problem with conventional web butt splicing devices, is solved, and the web butt splicing device can be used for welding in a wide variety of applications.

[Brief explanation of the drawing]

Fig. 1 is an overall elevational view of a web butt splicing device according to the present invention with a portion 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 feeding machine, B... Trailing web drawing machine, C... Leading web removal machine, D...
...cutting machine, E...joining machine, X...
Preceding web, Y...Subsequent web, Z...
・Web passage, 74...First guide, 75...
...Second guide, 76...Third guide, 79...
...Guidance plate, 82...Compressed air pipe, 83.
...Blow hole.

Claims (1)

[Claims] 1. A rotatable cutting means provided with a narrow web passage for cutting a preceding web and a following web to be joined to the web while both webs are running; means for holding a joint member rotatably disposed on at least one side of the passage;
a joining means provided on the other side of the web passage and having means for pressing the web in cooperation with the joining member; and a joining means provided between the cutting hand and the joining means and cutting. and discharging the trailing web, which is preliminary run beyond the position of the cutting means before joining, out of the web path before the joining means, and discharging the cut end of the trailing web after being cut by the cutting means into the web. guiding means leading onto the path, the guiding means comprising a guiding plate having a corrugated surface when viewed from the direction of feed of the web;
A web butt splicing device comprising an air blowing means located at the front edge of the guide plate and for injecting compressed air in a direction that causes the web to float above the guide plate surface.