JPS60161854A - Method and device for joining ends of webs - Google Patents

Abstract

PURPOSE:To reliably and quickly adhere and join the starting end portion of a new web to the cut trailing end of a former web by detecting the incoming of the terminal end of the former web to stop the running of the web and cut the web at a suitable place and moving a new web in the web supply direction. CONSTITUTION:The start end portion of a new web 36 is drawn out to portion a register mark 212 at the top of an intermediate roll 42, and the web is cut along the longitudinal direction of the roll 42. A suitable adhesive tape 214 is sticked to the new cut portion of the new web 36 at its half adhesive surface, and the other half adhesive surface is positioned as it is on the surface of the roll 42 to be standing ready to join the ends of the new and former webs. When the former web 16 is consumed, and the former roll 18 decreases in diameter, web residual quantity detecting means 188 is operated to send an alarm signal to an operator. A register mark 212 put on the web at a position situated at a designated distance short of the terminal end of the former web is detected by detecting means 206, further no-web is detected by detecting means 204 and the ends of the former and new webs are pressed and adhered to each other by a roll 44.

Description

[Detailed Description of the Invention] This invention quickly and reliably splices webs,
Furthermore, the present invention relates to a novel web splicing method and apparatus that can minimize seam allowance.

Load rolls of webs of paper, sheets, films, cloth, foil, etc. into various web processing equipment.

The process of feeding the web from the roll to the processing side and subjecting it to the required processing is widely practiced in the industrial world.

For example, printing paper in a rotary printing machine, film as a packaging material in a bag-forming-fill-sealing machine, etc. are continuously fed out from the original roll and consumed on a large plate. When the web wound into a roll is fed out for various processing, when the roll currently being used for consumption is used up, it is necessary to quickly replace it with the next new roll. . It is also necessary to change the web currently in use to a web of different standards (dimensions, quality, etc.) by an order change command. A web splicing device, generally called a splicer, is used as a means of automatically splicing the web end of the old roll and the web start of the new roll without stopping the operation of the processing equipment when replacing the web. is preferably used. There are two methods for joining the old and new webs: ■ The speed of the new web is synchronized with the running speed of the old web, and the new web is spliced while the old web is stopped. There is something. The former method has the disadvantage that splicing is carried out while keeping the 11-coat web in a running state and causing the new web to follow the same speed as the new web, which often results in poor splicing or failure. In addition, in the latter method, the old web is stored in a running state in a festoon consisting of dancer rolls on the downstream side, and the old web is stopped in the splicing zone and spliced with the new web, which prevents splicing errors. It is characterized by almost no However, the latter prior art device has disadvantages such as an extremely complicated mechanism, increased manufacturing costs, and difficulty in maintenance and inspection.

In view of the above-mentioned drawbacks inherent in the web splicing apparatus according to the prior art, the present invention has been proposed in order to satisfactorily solve the problems, and by providing a new splicing method, the present invention can quickly and easily The purpose of this invention is to reliably join the old and new webs together, and to minimize the amount of splicing shells to avoid wasting the web.

In order to achieve the above object, the present invention provides a method for joining the terminal end of an old web and the starting end of a new web, in which an adhesive means is provided at the starting end of the new web while the old web is being fed. Waiting for alignment, detecting the arrival of the final end of the old web, stopping the running of the web, and pinching the old web and the waiting new web with a clamping means to cut the old web at a proper position and suppress it. By pressing and smoothing the new web using the means and shifting the web feeding direction, the starting end of the new web provided with the adhesive means comes onto the cut rear end surface of the old web, and the two webs are adhesively spliced. It is characterized by

Further, a web splicing device according to another invention of the present application proposed for suitably implementing the web splicing method,
a clamping means disposed close to and apart from the web running path to clamp both the old and new webs; a carriage provided on the clamping means and running parallel to the web running path; and a carriage rotatably disposed on the carriage. and two pressure rolls that are supported by the truck so as to be able to approach and separate from each other, and that rotatably sandwich the intermediate roll when they approach.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the web splicing method and apparatus according to the present invention will be described in detail by way of preferred embodiments and with reference to the accompanying drawings. In this embodiment, the apparatus will be described as a [packaging material web splicing device] that is suitably incorporated into a bag making, filling and packaging machine that forms a film-like packaging material into a hollow bag using a former and fills the bag with contents. However, the present invention is not limited thereto, and can be widely applied to devices that process webs such as various long papers, films, and sheets, such as splicers of printing presses.

FIG. 1 is a front view showing the overall structure of a web splicing device according to the present invention, and shows a web splicing mechanism and a mechanism for exchanging old and new rolls.

1, the reference numeral 1O designates an apparatus frame 10, on which is arranged a web splicing mechanism 12, which is disclosed in detail in FIG. It is set up. In the figure, the two dotted lines indicate the two new IB rolls, and the III IJ roll 18 located diagonally below carries the old web 16 toward a predetermined processing step (not shown) located downstream. It is continuously fed and supplied. A new roll 20 is loaded on the diagonally right side of the old roll 18 and is waiting to be replaced with the old roll 18. Note that details of the mechanism 14 for exchanging the old and new rolls 1B and 20 will be described later.

In the illustrated embodiment, from the old roll 18 to the old nib 16
is fed out approximately horizontally, is changed direction by a guide roll 22, runs vertically downward, and after passing through a splicing zone A to be described later, two guide rolls 24 are arranged below with a predetermined distance between them. .26, and is supplied to a bag making mechanism of a bag making, filling and packaging machine (not shown). Immediately before entering the bag making mechanism, the old web 16 is stored in a running state for a predetermined length by a dancer roll (not shown). Note that the currently used 111 web 16 is fed out using a pair of feeding rollers 30 horizontally disposed on the F side of a backing plate 28 of a predetermined width located perpendicularly to the splicing zone A.
, 32 so that A is given. That is, one of the feeding rollers 30 is driven by a motor 34 equipped with an electromagnetic clutch, and by controlling the start and stop of this motor 34 by a command signal, the running and stopping of the old web 16 held between the two rolls is controlled. It is something to do. The motor 34 has a built-in electromagnetic brake, for example, and is structured to stop instantly without any action when a stop command is issued.

In the splicing zone A, a web splicing mechanism 12 is arranged, as shown in more detail in FIG. 3 and especially in FIG. That is, as the old web 16 fed out from the old roll 18 wears out, the web splicing mechanism 12 connects this old web 16 with a new web 36 from a new roll 20 that has been loaded into the device and kept on standby. A clamping means 38 for splicing the web in a timely manner and clamping both the old and new webs. A cart 40 is provided on the clamping means 38 so as to be able to slide freely. An intermediate roll 42 rotatably provided on this cart 40
and two suppression rolls which are disposed so as to be able to approach and separate from the trolley 40 and rotatably sandwich the intermediate roll 42 when approaching. For example, as shown in FIG. 7, upright frames 10a and 10b, which are arranged parallel to each other with a predetermined distance apart and constitute the base frame of the apparatus, include:
A pair of bearings 48, 48 and 50.5 in the upper and lower relation, respectively.
0 is disposed, and each pair of bearings has a shaft 52 and 54.
are rotatably supported at their respective ends.

Then, inside the pair of upright frames, as shown in FIG. 3, a pair of upper and lower crank levers 56, 58 are installed.
They are fixed to the shafts 52 and 54, respectively. Note that these crank levers 56, 58 and the connecting rod 6 described later
Although the member No. 4 is shown on only one side in Fig. 3, it goes without saying that the same member forming a pair with it is arranged on the opposite side (see Fig. 7), and the Descriptions are omitted to avoid duplication. The crank lever 5
As shown in FIG. 7, one end of each of 6 and 58 is rotatably attached to a substantially rectangular frame 60 constituting the clamping means 38 via a pin 62 at a predetermined distance. It is connected. Further, the other end of the crank levers 56, 58 is connected to the third
As shown in the figure, they are each connected to a connecting rod 64 via a pin 66. Furthermore, in the embodiment shown in FIG. 3, the other end of the crank lever 56 located above (the side to which the connecting rod 64 is connected) extends slightly, and the actuator is connected to the tip thereof. There is. This actuator is preferably a double-acting pneumatic cylinder 68, and the cylinder fL8 is connected at its lower end to the inside of the upright frame 10a via a pin 70, and the tip of the piston door 2 is connected to the crankshaft. It is connected to the extended tip of the lever 56 via a pin 74. That is, the crank levers 56, 58 and the connecting rod 64 connecting them constitute a four-bar link that is driven by a pneumatic cylinder 68 to perform link operation.

Next, the rectangular frame 60 constituting the clamping means 38 basically consists of temporary frames 76 , 76 stretched horizontally above and below, and a pair of side plates 80 , 80 extending vertically. Pads 78 made of a flexible material such as rubber and having a large coefficient of friction are stretched on the front surfaces of the plates 76 and 76 (ie, on the web running side). As shown in FIG. 3, in the state before the pneumatic cylinder 68 is energized, the pair of upper and lower pads 78.7 provided on the clamping means 38
8 is located at a predetermined distance from the contact plate 28 disposed in the web splicing zone. Then, the 4m link is actuated by the bias of the pneumatic cylinder 68,
By moving the rectangular frame 60, the pad 78
．． 78 in close contact with the plate 28, and the new and old side webs 16, 36
It is used to hold the

As described above and shown in FIG. 7, the rectangular frame 60 includes a pair of upper and lower plates 76 and 76 extending in the horizontal and lateral directions;
It is composed of a pair of side plates 80.degree. 80 extending in the vertical direction, and a cart 40 that rotatably supports the intermediate roll 42 is disposed on this frame 60 so as to be able to slide freely. That is, as shown in FIGS. 4 and 7, guide rails 82 and 82 each having a U-shaped cross section are integrally formed inside the pair of side plates 80 and 80 constituting the frame 60. and their longitudinal openings are opposed to each other. A truck 40 having a plurality of axles 84 is slidably disposed between the pair of guide rails 82 and 82. For example, as shown in FIG. 7, this truck 4o consists of a pair of holding members 86, 86 having a predetermined shape, and a pair of upper and lower pivots 88 are attached to the holding members 86, 86.
．． 88 are commonly inserted and supported. At both ends of this pivot 88, an axle 84 made of, for example, a bearing is rotatably supported and its position is regulated by a collar 85.
It is slidably inserted into each of the openings 2 and 82. Also, a pivot 88 disposed above of the two pivots
The intermediate roll 42 is rotatably supported via bearings 90, 90.

The outer periphery of this intermediate roll 42 is stretched with a highly flexible material such as rubber, and the starting end of the new web 36 fed out from the new roll 20 is set onto the intermediate roll 42, as will be described later. ing.

In this way, the truck 40 is composed of a pair of holding members 86 and 86, and each pivot shaft 88 is inserted through and supported by these holding members.
Through an axle 84 rotatably supported at the end of the web, it can slide in parallel to the web travel path with respect to the frame 60 that constitutes the clamping means 38.
The traveling of this truck 40 is controlled by a pneumatic cylinder 9 shown in FIG.
2 is applied by an actuator represented by a. That is, a pneumatic cylinder 92 is pivotally attached to the lower part of the inner surface of the upright frame 10a via a pin 94.
A piston rod 96 is rotatably connected to one end of a crank lever 98 via a pin 100. As shown in FIG. 7, this crank lever 98 has bearings 102 and 1.02 disposed on upright frames 10a and 10b, respectively.
They are fixed to a shaft 104 which is rotatably inserted through and supported by a shaft 104 so as to form a left and right pair. The other end of the crank lever 98 is connected to a link plate 108 via a pin 106, as shown in FIGS. It is rotatably connected to the holding member 86 via the holding member 86. Accordingly, in FIG. 3, when the pneumatic cylinder 92 is pressurized, the piston rod 96 extends from the cylinder tube to rotate the crank lever 98 clockwise about the shaft 104. This rotation of the crank lever 98 is converted into a linear motion by a link plate 108 connected to the other end, and as a result, the holding members 86, 86 constituting the truck 40 move downward along the guide rails 82°82. It will be understood that sliding movement can be performed with a predetermined stroke.

Next, the truck 40 has the pair of suppression rolls 44.4.
U-shaped bracket 112.11 that rotatably supports 6.
2 are supported so as to be able to approach and move away from each other, so this mechanism will be explained. As can be clearly seen from FIGS. 5 and 9, the U-shaped bracket 112.11.2 has a pair of upper and lower pressure rolls 44 and 46 that rotate around pivot shafts 114 and 114 via respective bearings 116. freely supported. The two rolls 44 and 46 are spaced apart from each other by a distance slightly larger than the diameter of the intermediate roll 42, and when the manual operation lever 132 is rotated as will be described later, the two suppression rolls move the intermediate roll away from the intermediate roll. ] ° method setting that allows non-contact clamping. The pair of brackets 1-112, 11
2, a guide post 118 is slidably inserted through the through hole, and one end of the guide post 118 is screwed and fixed into a screw hole 119 formed in the holding member 86. ing. Furthermore, guide boss I-1
A stopper 120 having a predetermined shape is fixed to the open end of the bracket 18 to prevent the bracket from falling off. Press rolls 44 and 46 are respectively pivotally supported on brackets 112 that are slidably inserted into each guide post 118, and intermediate rolls 4 are rotatably supported between the holding members 86 and 86.
The positional relationship with 2 is as shown in FIG. Then, by manual operation described later, the brackets 112, 112
As shown in FIG. 7 and FIG.
．． The intermediate roll 42 is positioned between the rollers 46 in a non-contact manner with a slight gap therebetween.

As shown in FIGS. 3 and 9, an inverted lever 122 is rotatably pivoted at one end of one pivot shaft 88 that is commonly inserted under the holding members 86 and 86. A long groove 124 is bored at the other end. This lever 122 has a pin 12 inserted into its long groove 124.
6, it is connected to the protruding portions 128 of the brackets 1 to 112. Further, as shown in FIGS. 3 and 9, a manually operated lever 132 having an appropriate shape and having a knob 130 at its tip is rotatably attached to the holding member 86, and the lever 132 is attached to a pin 134. It is connected to the link board 136 via. Further, the link plate 136 is connected to a substantially intermediate portion of the lever 122 via a pin 138. However, this manual operation lever 132 and link plate 136 are
In FIG. 9, it is attached to the left holding member 86, but in an actual design example, it is attached to the right holding member 86, as shown in FIG. In FIG. 3, the manual operation lever 132 is moved half an hour
If you push it up in one direction, the inverted-shaped lever 122 will move through the link plate 136.

It pivots about the pivot 88 in the direction of the half-hour hand. As a result, the pair of brackets 11.2, 112 are connected to the guide post 118, via the pin 126 inserted into the long groove 124.
118 to the left and finally No. 10(b)
It is understood that the intermediate roller 42 is sandwiched between a pair of upper and lower pressure rolls 44 and 46 as shown in the figure.

Next, as shown in FIG.
40 is opened, and a cutter 142 (FIG. 4) extends from this slit 140 in a movable manner to cut the old web 16 located on the contact plate 28 in the lateral direction. As shown in FIG. 4, this cutter 142 is formed so that its blade portions are retracted at a slight angle at the center, and two guide bars 144 are attached to the support member 146 at the base thereof. It is supported so that it can slide horizontally. A short stroke double-acting pneumatic cylinder 148 is disposed on the support member 146;
The piston rod 150 is fixed to the base of the cutter 142. Therefore, when the pneumatic cylinder 148 is energized to extend the piston rod 150, the cutter 142 extends forward through the slit 140 formed in the contact plate 28, and cuts the old web 16. It is.

Next, details of the exchange mechanism 14 for both old and new rolls shown in FIGS. 1 and 2 will be explained. This roll exchange mechanism 1
4, the old web 16 wound around the old roll 18 has been completely used up, and the chuck 152 that clamps the bobbin is attached to the shaft 1.
64, the new roll 20 is lowered to the position where the old roll 18 is disposed in response to a predetermined command. For example, as shown in FIGS. 1 and 2, each of the upright frames 10a and 10b has an old roll 1
Two rolls 156, 156 that rotatably support a shaft 154 of 8 are arranged and fixed at their shaft ends, and a slope 158 that slopes upward at a predetermined angle is arranged at the upper right side. Furthermore, support members 160° and 160 are provided inside the upright frames 10a and 10b, respectively. Each support member 160 has a slide rod 1.
62 is slidably inserted vertically into the slide rod 162.
A guide support plate 164 having a gentle inclination in a direction opposite to the direction of inclination of the slope 158 is arranged and fixed at the top of each of the guide support plates 164 . Further, the lower end of the slide bar 162 is connected to the pin 16.
8 to a link plate 166, and this link plate 166 is further pivoted to the open end of a Tee-shaped lever 172 via a pin 170.

And as shown in FIG. 2, both upright frames 10a.

The other end of the elongated lever 172 is fixed to a shaft 176 that is rotatably inserted and supported by bearings 174, 174 provided in the lever 10b, respectively. Further, a rectangular lever 184 is attached to the shaft 17 adjacent to the one elongated lever 172.
6 is fixedly connected.

A double-acting pneumatic cylinder 180 is pivotally attached to the lower part of the upright frame 10b via a pin 178, and a piston rod 182 of this pneumatic cylinder 18 is connected to the open end of the short lever 184 via a pin 186. It is connected consecutively. That is, when the pneumatic cylinder 180 is biased forward or backward, a pivoting motion is imparted to the short lever 184 and the long lever 172, and this pivoting motion is caused by the link plate 166.
This is converted into an up-and-down reciprocating motion, and the respective slide rods 162 are moved up and down while sliding on the support member 162. Therefore, as shown by the solid line in FIG.
When the cylinder 180 is energized by a detection signal indicating that the slide bar 162 has been removed, the slide rods 162, 162 begin to descend. Then, the new roll 20 is supported by the guide support plates 164, 164 and the slopes 158, 158 at its shaft 154, and is slowly guided diagonally downward to the left along the slope, and finally reaches the roll 156, 156.
The roll will be guided to the old roll support position, which will be removed from the roll.

In FIG. 1, reference numeral 188 indicates a remaining web amount detection means. A rod member 190 that is pivotably supported is elastically held by a tension spring 192, and the rod member 190 is
A roll 194 rotatably provided at one end of the roll 194 is always brought into contact with the surface of the old roll 18. A fan-shaped member 196 that rotates integrally with the bar member 192 is attached to the other end of the rod member 192.
The detection lever of the microswitch 198 is in contact with the arcuate surface of the microswitch 198. When the diameter of the old roll 18 decreases as the old web of the old roll 18 is consumed, the rod member 190 rises counterclockwise due to the tensile elasticity of the spring 192, and when the rising angle reaches a predetermined limit, The microswitch 198 is actuated to electrically indicate that the remaining amount of the old web 16 wound around the old roll 18 has become small. Further, in FIG. 1, reference numeral 200 indicates a wire that brakes the free rotation of the old roll 18, and a weight 202 is attached to the lower end of this wire 200.

Further, in FIG. 1, reference numeral 204 is a detection means for detecting the final rear end of the old web 16 and notifying that there is no residual image of the web. Further, below the web splicing zone A, means 206 for detecting register marks is provided. This register mark detection means 206 detects the arrival of a light-opaque register mark printed near the final trailing edge of the web wound into a roll, and detects that the web is almost used up. It is something to do. In the present invention, the motor 34 equipped with the electric clutch is stopped on condition that signals from both the web absence detection means 204 and the register mark detection means 206 are obtained.

Furthermore, the reference numeral 208 indicates a means for detecting splicing failure of the web, and the reference numeral 210 indicates a box for collecting the rear end portion of the old web 16 cut by the cutter 142.

Next, a procedure for splicing old and new webs using the web splicing apparatus according to the present invention constructed as described above will be described with particular reference to FIG. 10. First, in FIG. 1, it is assumed that the old web 16 is unwound from the old roll 18 by the rotation of the unwinding rolls 30 and 32, and is traveling in a predetermined direction while being guided by the guide rollers 22 and 24. Further, a guide support plate 16 provided at the top of each slide support 162, 162 in the roll exchange mechanism 14
4. It is assumed that a new roll 20 is placed at 164 via the shaft 154 and is waiting for the roll to be replaced at a position diagonally above the old roll 18.

Further, the web splicing mechanism 12 is on standby with the clamping means 38 spaced apart from the contact plate 28 by a predetermined distance as shown in FIG. 3, and the bracket tt2. The two pressure rolls 44°46 rotatably supported on the ttz are also held by the holding member 86.8.
6 and is in a standby state at a predetermined distance.

In this state, the operator manually pulls out the starting end of the new web 36 on the new roll 20 so that the register mark 212 attached to the web reaches the top of the intermediate roll 42, as shown in FIG. to be located. Thereafter, by rotating the manual operation lever 132 counterclockwise in FIG. 3, the lever 122 rotates counterclockwise via the link plate 136, and the brackets 112 and 112 is each guide post 1
18. Slide to the left on 118. As a result, as shown in FIG. 10(b), a pair of upper and lower suppression rolls 44.
46 sandwich the intermediate roll 42 supported by the trolley 40 without contact, so that the vicinity of the starting end of the new web 36 is
Then, the new web 36 located on the top of the intermediate roll 42 is pressed in an S-shape by two rolls, and is then cut along the longitudinal direction of the intermediate roll 42 by means of a knife or the like at the part where the register mark 212 is attached. The new web 36 is then cut, and some remaining pieces from the starting end of the new web 36 to the cut portion are removed. Then, on the newly cut end of the new web 36, as shown in FIG. position it on the surface of the Upon completion of this work, the machine enters a state in which it waits for the new and old webs to be spliced together.

When the old web 16 wound around the old roll 18 is consumed in a processing step (not shown) and the diameter of the old roll 18 decreases, the remaining web amount detection means 188 is activated, and for example, an intermittent buzzer sound or light is activated. A warning signal is sent to the operator to confirm whether the new roll 20 is set in the predetermined position. When consumption of the old web 16 in the old roll 18 is further promoted and the register mark 212 attached a predetermined distance from the final end of the web 16 passes in front of the detection head of the register mark detection means 206, here. First, a first logical condition is set. Further, when the final end of the web 16 is unwound from the bobbin of the old roll 18 and passes in front of the detection head of the no-web detection means 204, a second logical condition is set. Then, with the establishment of these two logical conditions as an AND condition, the rotation of the electromagnetic clutch motor 34 is stopped, the clutch is released, and the brake is activated all at once, and power transmission to the feeding roller 30 is cut off and an instantaneous stop is realized. . As a result, the feeding-out movement of the old web 16 is immediately stopped. However, as mentioned earlier, a dancer roll (not shown) is provided on the downstream side.
In addition, since the old web 16 is stored for a predetermined length while running, it does not affect the processing of the web downstream, at least during the time required for splicing, and continuous operation continues as is. .

After the feed rolls 30 and 32 have stopped in this way, the third
In the figure, the pneumatic cylinder 68 is pressurized and its piston rod 72 is retracted into the cylinder tube, thereby driving a four-bar linkage consisting of the crank lever 56.58 and the connecting rod 64. As a result, the clamping means 38 consisting of a frame 60 connected to the tip of each crank lever moves toward the contact plate 28, and as shown in FIG. 3
6 is sandwiched between it and the contact plate 28 (however, only the old web 16 is located below). Note that since the slit 140 is provided in the portion of the contact plate 28 located between the intermediate roll 42 and the lower pressing roll 46, by momentarily energizing the pneumatic cylinder 148 shown in FIG. The cutter 142 extends forward through the slit 140 and cuts the old web 16 laterally. The cutter 142 immediately retracts after cutting the old web, and then the pneumatic cylinder 92 shown in FIG.
extends upwardly from the cylinder tube, causing the crank lever 98 to pivot clockwise about its shaft 104. Each link plate 108.1.08 connected to the other end of the crank levers 98, 98 is connected to the trolley 4.
0 (see FIG. 7), clockwise rotation of the crank lever 98 causes the truck 40 to move downward in the guide rail 82 via its wheels 84. It will be running. That is, the first
As shown in FIG. 1.0(d), the cut end of the new web 3G is pressed and smoothed by an appropriate reduction blade by the upper suppression roll 44, and finally, as shown in FIG. 1.0(e), a new web 3G is cut. web 3
The adhesive tape 214 attached to the cut end of the old web 1
6, both old and new webs 16,3
6 is completed (Fig. 10(el)). At this time, as shown in FIG. 10(el), the starting end of the new web 36 and the vicinity of the final cut end of the old web 16 usually partially overlap, creating a so-called lap joint. Depending on how the timing is determined, the two webs may be connected to the flanno 1- so that their ends are in contact with each other (without the webs overlapping each other) as shown in Figure 1 (θ2). It is also possible. After the pressure roll 44 strongly presses the adhesive tape 214 and adheres it to the final cut end of the old web I6, the pneumatic cylinder 68 is reversely biased, and the four-bar link mechanism is also reversely operated. do. As a result, the clamping means 38 composed of the frame '60 is separated from the contact plate 28 and the new I! 1 car web 16,
Release the clamp on 36. Further, the motor 34
The rotational drive is started again, and the feeding roll 30.32
web feeding is resumed. Also, Section 10(g)
As shown in the figure, the pneumatic cylinder 92 is reversely biased and the crank lever 98.98 is rotated counterclockwise to return the truck 40 to the original position shown in FIG. Finish the process.

In this state, the two suppression rolls 44.4'6 are in a state where the intermediate roll 42 is sandwiched between them, but this can be returned to the initial position as shown in FIG. 3 by operating the manual operation lever 132. It will be done.

As mentioned above, the web splicing mechanism 12 completes splicing the old and new webs, and the old web 16 is attached to the new roll 20.
The process will smoothly transition to the new web wound on the new roll 2 and continue unwinding it, but at this stage, the new web 2
o is a guide support plate 164 provided at the top of the slide rods 162, 162 as shown in FIG. ．． 164, and remains placed diagonally above the frame 1°. Therefore, if the operator manually removes the support shaft 154 of the old roll 18 on which the web has been consumed (this may be done by an automatic removal mechanism), a detection means (not shown) is activated. A command to the effect that the removal of the support shaft 154 is completed is given to the electric circuit. This energizes the pneumatic cylinder 180 shown in FIG. That is, as the piston rod 182 retreats into the cylinder tube, the elongated lever 172 rotates clockwise about the shaft 172, and slowly lowers the slide rods 1.62, 162 vertically via the link plate 166. let Accordingly, each end of the shaft 154 in the new roll 20 is rotatably supported by a guide support plate 164 and a slope 158, and is guided diagonally downward along the slope 158, and finally the old roll 18 is transferred onto the roller 156°156 on which it was loaded. Further, when the remaining web amount of this newly set roll 2o decreases, the remaining amount detecting means is activated to issue an alarm, prompting the operator to load another new roll and set its starting end. become. Note that the slide rod 162.162 is
After transferring the new roll 2o to the roll support position constituted by the rolls 156° and 156, the cylinder 180 is moved again.
The reverse biasing causes the roll to return to the upper position where it waits for loading of another new roll.

In addition, in the method and apparatus according to the present invention, the feeding roll 3
Detection of a register mark and detection of the final edge of the film were set as two conditions for stopping the rotation of the web. The rotation of the motor 34 may be stopped on the condition that the time period has elapsed.

The setting time at this time can be arbitrarily set in consideration of conditions such as the web feeding speed and the number of splicing allowances. Furthermore, in this embodiment, a method was adopted in which the feeding of the old web was stopped when splicing the old and new side webs, but it is also possible to connect the webs in a continuous feeding state without stopping the web. .

As explained in detail above, the web splicing method and apparatus according to the present invention can easily and quickly perform web splicing, which conventionally required complicated devices and processes, and This has many effects, such as the ability to minimize the alignment cost and save on web usage.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of an embodiment of a preferred apparatus for carrying out the web splicing method according to the present invention, and FIG. 2 is a right side view of the apparatus shown in FIG. 1, showing the web splicing mechanism. 3 is a front view showing details of the web splicing mechanism according to the present invention, FIG. 4 is a plan view of FIG. 3, and FIG. 5 is a right side view of FIG. 3. In particular, the state of the suppression rolls and the brackets that support them are schematically explained, and FIG. 6 is a view taken along the line Vl-'1111 in FIG. 5, showing a pair of suppression rolls and an intermediate roll. FIG. 7 is a right side view of FIG. 3, and particularly schematically shows the structure of the cart that supports the intermediate roll and can slide relative to the clamping means. FIG. 8 is a cross-sectional view taken along the line ■-■ in FIG. 7, and schematically shows how the manually operated lever and the lever that is linked and actuated are attached to the trolley. An exploded perspective view of the main parts of the web splicing mechanism shown in FIG. 3, No. 10 (
Figures a) to (g) are explanatory diagrams showing steps in implementing the web splicing method according to the present invention. FIC3,4 Fl(3,3 2 (Yu (C1 9ri1010 [b) +CI+ [9) tfl Flolo Procedural amendment band (spontaneous) March 15, 1980 1, Indication of case 1982 Patent Application No. 17477 No. 2, Title of the invention Web splicing method and device 3, Relationship to the case of the person making the amendment Patent applicant address 2-14-10 Kamejima, Nakamura-ku, Nagoya Name
Fuji Machinery Co., Ltd. Representative: Samurai 4, Agent: 460 Address: 5-3-11 Sakae, Naka-ku, Nagoya (1) Official drawing 6, Contents of amendments (1) Attachment attached (no changes to content)

Claims (2)

[Claims] (1) A method of joining the terminal end of the old web and the starting end of the new web, in which an adhesive means is provided at the starting end of the new web while the old web is being fed and the joining is waited for, +1
The arrival of the final end of the co-web is detected, the running of the web is stopped, the old web and the waiting new web are pinched by the pinching means, the old web is cut at a proper position, and the new web is pushed by the suppressing means. A web characterized in that the starting end of the new web provided with the adhesive means is brought onto the cut rear end surface of the old web by moving the direction in the web feeding direction while stroking the web, thereby performing adhesive splicing of both webs. Splicing method. (2) a clamping means that is disposed so as to be close to and apart from the web travel path and clamps both the old and new web; a cart that is installed in the clamping means and runs parallel to the web travel path; A web splicing device comprising: an intermediate roll disposed on the carriage; and two pressing rolls supported by the trolley so as to be able to approach and separate from each other, and rotatably sandwich the intermediate roll when they approach.