JP2002003034A - Automatic seaming method for web, and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a shift from accumulating and exceeding an adjusting range, even when axial positions of the starting end and the finishing end of a web of a set roll shift from each other requiring adjustment of an axial position of the roll. SOLUTION: The web 32 is fed from a first roll, and just before the web 32 of the first roll is completely consumed, the axial position of the first roll is adjusted to an axial position of the starting end of a web of a second roll, and then the starting end of the web of the second roll is seamed near the finishing end of the web 32 of the first roll for connection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for automatically splicing a web.

[0002]

2. Description of the Related Art Conventionally, when a strip-shaped sheet material made of resin, paper, cloth or the like is processed to produce a container, bag, lid (lid), etc., the sheet material as a raw material is wound around a core. It is supplied to the manufacturing process in roll form.

[0003] In the above manufacturing process, the roll of raw material is
It is set rotatably in the sheet material supply device, the raw material is automatically fed out of the rotating roll by, for example, a sheet feeding device composed of a plurality of rollers, and fed into a processing device that processes the sheet material, Containers, bags,
A lid or the like is manufactured.

[0004] Then, so that the supply of the raw material is not interrupted,
Immediately before the roll of the first set roll is consumed, the starting end of the roll of the second roll is added and connected to the end of the roll to continuously supply the roll. There is a need. For this purpose, a device for automatically replenishing the raw material, that is, an automatic splicing device for the raw material is attached to the sheet material supply device. In the automatic web splicing apparatus, the roll set second is set in advance at the standby position, is automatically replaced with the roll set first, and the web is automatically spliced.

[0005] By using the above-mentioned automatic splicing device, the rolls can be exchanged and the end portions of the web can be automatically and rapidly added without stopping the processing device. In addition, the raw material can be continuously supplied without requiring any labor, so that not only the overall cost of the process of processing the sheet material is reduced, but also the throughput is improved.

[0006]

However, in the above-described conventional automatic splicing apparatus for a web, the roll set first is set so that the position of the connection portion does not shift when the ends of the web are added. If there is a deviation between the position of the roll and the second set roll, the position of the second set roll is adjusted. As a result, the position of the roll may exceed the adjustment range.

Generally, when a roll is formed by winding a raw material around a core, the position of the raw material roll in the axial direction may be slightly shifted during the winding process. That is, the axial positions of the outermost roll in the radial direction and the innermost roll in the radial direction of the formed roll are shifted.

When the roll is set in the automatic splicing device of the raw material, the roll is set at a preset initial position so that the axial position of the core of the roll is constant. On the other hand, when forming the roll, the positional relationship between the raw material and the core at the time when the raw material is wound around the core is usually
Since it is always constant, the radially innermost axial position of the web is constant for all rolls. Accordingly, when the web of the first set roll is consumed, the axial position near the end of the web is at the default position.

Then, the roll set second is:
In the case where the radially outermost and outermost radially inner positions of the raw material are shifted from each other in the axial direction, the vicinity of the end of the raw material of the first roll and the second set roll Since the axial position of the starting end of the raw material is shifted and a step occurs at the side edge of the connection portion of the raw material, the position of the raw material is adjusted by moving the second roll set in the axial direction. A step is not formed on the side edge of the opposite connection portion.

However, if the outermost axial position of the material roll in the third roll is shifted in the same direction as that of the second roll, the third roll is set. The set roll is also moved in the same direction as the roll set second, and the position is adjusted. Therefore, the movement amount for adjusting the position of the roll, that is, the displacement is accumulated. Further, the adjustment range of the axial position of the roll is constant, and the position of the roll cannot be adjusted beyond the adjustment range.

[0011] Therefore, when the deviation is accumulated and exceeds the above range, it is necessary to stop the automatic splicing device and the processing device of the raw material and return the roll position to the initial setting position. The overall cost of the process is increased and the throughput is reduced.

The present invention solves the problems of the conventional automatic splicing apparatus of the above-mentioned roll, and the axial positions of the outermost roll in the radial direction and the innermost roll in the radial direction of the roll set are determined. Even if it is misaligned and it is necessary to adjust the axial position of the roll, the misalignment does not accumulate and does not exceed the adjustment range. It is an object of the present invention to provide an automatic splicing method and an automatic splicing apparatus for a raw material that do not require returning the position of the original to the initial setting position.

[0013]

In order to achieve the object, in the automatic web splicing method of the present invention, the web is unwound from the first roll, and immediately before the web of the first roll is consumed, By adjusting the axial position of the first roll,
Align the starting end of the raw material of the second roll in the axial direction, and then place the second raw material near the end of the raw material of the first roll.
Add and connect the starting end of the roll.

In the automatic splicing device of the present invention,
First setting means for setting a first roll, second setting means for setting a second roll, first position adjusting means for adjusting an axial position of the first roll; Second position adjusting means for adjusting the axial position of the first roll; and near-foot connecting means for adding and connecting the starting end of the second roll to the vicinity of the end of the first roll. Just before the raw material of the first roll is consumed, the first position adjusting means is operated, and the axial position of the first roll is changed to the raw material of the second roll. Is adjusted to the position in the axial direction of the start end, and then the foot connecting means is operated.

[0015] In another automatic splicing apparatus of the present invention, the first position adjusting means is operated just before the first roll is consumed, and the first roll is rotated. A control device that adjusts the position in the axial direction to the position in the axial direction of the start end of the material roll of the second roll, and then activates the foot connecting means.

In still another automatic splicing apparatus of the present invention, a raw sheet side edge detecting means for detecting a side edge position of the first roll, and a side edge position of the second roll are detected. A source side edge detection unit, wherein the control device is configured to control the first
And using the raw material side edge detecting means for detecting the side edge position of the second roll, the axial position of the first roll is changed to the axial position of the starting end of the raw material of the second roll. Match.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a plan sectional view of an automatic splicing apparatus for a raw material according to a first embodiment of the present invention, FIG. 2 is a side view of the automatic splicing apparatus for a raw material according to the first embodiment of the present invention, FIG.
FIG. 4 is a first diagram showing the operation of the automatic web splicing apparatus according to the first embodiment of the present invention, and FIG. 4 is a diagram showing the operation of the automatic web splicing apparatus according to the first embodiment of the present invention. FIGS. 2 and 5 are third views showing the operation of the automatic splicing apparatus for a web in the first embodiment of the present invention, and FIG. 6 is a first view of the first embodiment of the present invention.
FIG. 4 is a fourth diagram showing the operation of the automatic web splicing apparatus according to the first embodiment, and FIG. 7 is a fifth diagram showing the operation of the automatic web splicing apparatus according to the first embodiment of the present invention; FIG. 6 is a sixth diagram illustrating the operation of the automatic splicing device for a web according to the first embodiment of the present invention.

In the drawing, reference numeral 40 denotes an automatic splicing device main body of an automatic splicing device for a raw material.
A band-shaped sheet material, that is, a container processed from raw material,
In the manufacturing process for manufacturing pipes, bags, lids, corrugated sheets, adhesive tapes, laminated films, etc., molding machines, sticking machines,
This is for automatically feeding and supplying a raw material to a processing device such as a welding machine, a rolling machine, and a laminating machine.

The raw material may be made of a material such as resin, paper, cloth, metal, ceramics, or a mixture of all or some of these materials, or a composite of all or some of these materials. Alternatively, a material composed of a laminate of all or some of these materials is used. Also,
The stock is rolled around the core in advance.

The automatic splicing apparatus main body 40 has a turret arm support frame 41 and a roller support frame 42.

The turret arm support frame 41 is provided with a turret arm 11.
Is rotatably mounted around the center of the
An arm supporting the two auxiliary rollers 47 is rotatably mounted coaxially with the center of the turret arm 11.

As shown in FIG. 1, at both ends of the turret arm 11, a roll already set, that is, a raw roll 31a as a first roll, and a roll set next, that is, a first roll, Roll supporting shafts 12a and 12 supporting a material roll 31b as a second roll.
2b is rotatably mounted. A support shaft sleeve 13a surrounding the roll support shafts 12a and 12b,
13b are provided respectively.

Further, the support shaft sleeves 13a, 13b
Around the sensor block support sleeves 14a, 14b
Are provided so as to be relatively movable in the axial direction, that is, slidably movable. Key grooves (not shown) are formed on the outer peripheral surfaces of the support shaft sleeves 13a and 13b and the inner peripheral surfaces of the sensor block support sleeves 14a and 14b, and keys 16a and 16b are inserted into the key grooves. 13a, 13b and the sensor block support sleeves 14a, 14b
Although they are slidable in the axial direction by a and 16b, they are connected so as to rotate integrally. As means for connecting the support shaft sleeves 13a, 13b and the sensor block support sleeves 14a, 14b, a key 16a,
Instead of 16b, for example, an axially slidable spline may be used.

The rotation angle sensor block 15 is provided on the outer peripheral surfaces of the sensor block support sleeves 14a and 14b.
a and 15b are fixed respectively. The rotation angle sensor (not shown) detects the angular position θ of the rotation angle sensor blocks 15a, 15b, and thereby detects the roll support shaft 12a,
The rotation angle of 12b is detected. Note that the rotation angle sensor blocks 15a and 15b are disks having a plurality of slits formed in a circumferential portion in a radial direction, and the rotation angle sensor is preferably an optical sensor that detects the slit.
It may be of any form.

Further, the sensor block support sleeve 14
a, 14b are bearings 20a, 20b, 21a, 2
1b, the turret arm 11 is attached to the turret arm 11 so as to be rotatable and immovable in the axial direction.

Adjustable outer cylinders 17a and 17b are fixed to both ends of the turret arm 11 on the same axis as the roll support shafts 12a and 12b, respectively. And
Adjusting inner cylinders 18a, 18 having internal threads formed on the inner peripheral surfaces of the adjusting outer cylinders 17a, 17b and external threads formed on the outer peripheral surfaces.
b is screwed.

The support shaft sleeves 13a, 13
b (the left end in FIG. 1) is a bearing 22a,
It is rotatably attached to the adjustment inner cylinders 18a and 18b via a 22b and is immovable in the axial direction.

In this embodiment, the adjustment inner cylinders 18a and 18b are provided with adjustment handles 19 for the operator to rotate the adjustment inner cylinders 18a and 18b.
a and 19b are attached, but the adjusting inner cylinder 18
When rotating a and 18b using a power source such as a motor, the adjusting handles 19a and 19b can be omitted. Further, the roll support shafts 12a and 12b, the support shaft sleeves 13a and 13b, the adjustment outer cylinders 17a and 17
b, adjusting inner cylinders 18a, 18b, adjusting handles 19a, 1
9b cooperates to function as position adjusting means for adjusting the axial position of the first and second rolls 31a and 31b.

One ends (right ends in FIG. 1) of the roll supporting shafts 12a and 12b are fitted (fitted) to one ends (left ends in FIG. 1) of the cores 30a and 30b of the raw rolls 31a and 31b. The other ends (right ends in FIG. 1) of the cores 30a, 30b are provided with roll pressers 23a, 23b.
Is inserted. The roll pressers 23a and 23b cooperate with the roll support shafts 12a and 12b to function as first setting means and second setting means.
b is sandwiched and fixed.

A raw material side edge sensor 25 is arranged on the downstream side (lower side in FIG. 1) of the raw material in the feeding direction of the raw material with respect to the turret arm 11. The raw material side edge sensor 2
As 5, a non-contact type sensor using a laser beam, an ultrasonic wave, or the like, or a contact type sensor having a contact member is used, and is moved in the axial direction (the left-right direction in FIG. 1) of the material roll 31a. The position of the side edge of the fed web 32 on the turret arm 11 side is detected.

Here, the raw material side edge sensor 25 is screwed with a sensor moving shaft 26, and is moved in the axial direction of the raw material roll 31a by the rotation of the sensor moving shaft 26. The sensor movement shaft 26 is rotated by a sensor movement motor 28 via transmission means such as gears. The rotation speed of the sensor moving shaft 26 is detected by an encoder 27, and based on the detected rotation speed of the sensor moving shaft 26, the position of the raw material side edge sensor 25, that is, the fed raw material 32 Of the side edge on the turret arm 11 side is calculated.

On the roller support frame 42, a lower pester arm 45 and an upper pester arm 49 as a connecting foot connecting means are swingably movable.
And the lower pester roller 4 on the upper pester arm 49.
6 and the upper pester roller 50 are rotatably mounted. Further, a tension arm 43 is swingably mounted on the roller support frame 42, and a plurality of tension rollers 44 are rotatably mounted on the tension arm 43. Further, a transport roller 48 for transporting the web 32 unwound from the web roll 31a is rotatably attached to the roller support frame 42. Here, it is preferable that at least one of the transport rollers 48 is rotated by a power source such as a motor (not shown) to transport the raw fabric 32.

The automatic splicing device for a raw material has a control device (not shown). The control device controls the operation of the automatic splicing device of the raw material, and includes a CPU (central operator), a storage device, a display device, an input / output device, and the like. In addition, the said control apparatus is not independent, For example, it may be integrated with another control apparatus as a part of control apparatuses, such as a processing apparatus into which a raw material is sent.

Next, the operation of the automatic web splicing apparatus having the above-described configuration will be described.

First, the material roll 31a is connected to the roll support shaft 1
2a is set at one end. In this case, the material roll 31a is moved from the right to the left in FIG.
a until one end of the roll support shaft 12a fits into one end of
Conveyed. Thereafter, the roll retainer 23a is attached, and the core 30a is fixed to the roll support shaft 12a and the roll retainer 2a.
3a so as to be clamped from both sides.
At this time, since the axial position of the roll support shaft 12a is set at the initial setting position, the distance between the turret arm 11 and one end of the core 30a is an initial value L0.

Next, from the material roll 31a to the material 32
Is fed out, passes through each transport roller 48 and the tension roller 44, and is fed into a processing device (not shown). Then, before the raw material 32 of the raw material roll 31a is consumed, the raw material roll 31b is moved to the roll supporting shaft 1 with sufficient time so that the supply of the raw material is not interrupted.
It is set at one end of 2b by the same method as that of the material roll 31a.

At this time, during the winding process of the material roll 31b, the position of the material roll in the axial direction is displaced, and the outermost roll in the radial direction of the material roll 31b is formed. When the position in the radial direction is shifted from the innermost position in the radial direction, as shown in FIG.
The distance between 1 and the outermost side of the raw roll of the raw roll 31b in the radial direction is L1 larger than the initial value L0.

The measurement of the distance L1 may be performed by an operator using a measure, or by using another sensor having the same configuration as that of the raw material side edge sensor 25, The source side sensor 25 may be moved from the position shown in FIG.

At this time, as shown in FIG.
Is pulled out from the lower side of the material roll 31a, that is, the material roll 31b is set in a state of being pulled down.

In addition, since the upper pester arm 49 and the upper pester roller 50 are not used when adding and connecting the raw fabric 32 in the lowering state, FIGS.
The upper pester arm 49 and the upper pester roller 50 are omitted. If the material rolls 31a and 31b are set to be in the state of being pulled up, the material roll 32a
The lower pester arm 45 and the lower pester roller 46 are not used when connecting and adding the
When the position where the raw material 32 is fed out is different between the material roll 31b and the raw material roll 31b, that is, when the upper pulling and the lower pulling are switched, the lower pester arm 45, the upper pester arm 49, and the lower pester roller 46 And an upper pester roller 50 is used.

Next, when the operator turns on a turret arm rotation switch (not shown), as shown in FIG. 4, the turret arm 11 is rotated counterclockwise in the figure by a power source (not shown). In this case, since the web roll 31a moves rightward in the figure, the tension applied to the fed web 32 fluctuates.
The fluctuation of the tension is absorbed by the swing of the tension arm 43. When the turret arm 11 is rotated to the standby position shown in FIG. 5, the turret arm 11 is stopped. At this time, the web 3 of the web roll 31a is used.
2 is passed through the auxiliary roller 47.

If, in this state, the starting end of the raw roll of the raw roll 31b is added to and connected to the end of the raw roll 32 of the raw roll 31a, the end of the raw roll of the raw roll 31a and the raw roll Since the position of the raw material 31b in the axial direction is deviated from the starting end of the raw material, a step occurs at the side edge of the connection portion of the raw material. To prevent this, the operator operates the adjustment handle 19a, rotates the adjustment inner cylinder 18a, moves the roll support shaft 12a rightward in FIG. 1, and moves the turret arm 11 and one end of the core 30a. Adjust so that the distance is L1. When the adjustment inner cylinders 18a and 18b are rotated using a power source such as a motor, the operator operates a keyboard or the like to control the operation of the power source, and 18
Rotate a.

In this case, it is necessary to keep the moving speed in the axial direction of the raw material roll 31a from which the raw material 32 is unreeled, so that the adjusting inner cylinder 18a is rotated at a low speed. When the material roll 32 of the material roll 31a is almost consumed, the position of the side edge of the unfolded material 32 on the turret arm 11 side is substantially equal to the position of one end of the core 30a. The position of one end of 30a is equal to the position of the side edge on the turret arm 11 side of the raw material 32 at the place where the raw material side edge sensor 25 is provided in FIG.

Next, when the operator turns on a switch (not shown) for additional connection connection preparation, the lower pester arm 45 is swung by a power source (not shown), as shown in FIG. It is raised and placed near the toe connection location.

Here, the operator refers to the display of the rotation angle of the roll support shaft 12b detected by the rotation angle sensor detecting the angular position θ of the rotation angle sensor block 15b and refers to the original roll 31b. The raw roll 31b is rotated such that the starting end of the web is located at a position facing the lower pester roller 46. In addition, an adhesive is applied or an adhesive tape is affixed to the starting end of the material roll of the material roll 31b.

Next, when the operator turns on a switch (not shown) for connecting a foot, as shown in FIG. 7, the lower pester roller 46 is further raised and placed at the foot connecting position, and The raw material 32 fed from the raw material roll 31b is pressed against the starting end of the raw material roll 31b, and the starting end of the raw material roll 31b is applied to the raw material 32 of the raw material roll 31a with the adhesive or adhesive tape. And it is connected again. At this time, at the same time, the cutter 51 attached to the lower pester arm 45 operates to cut the rear end of the web 32 of the web roll 31a. This completes the splicing of the web. Then, the web 3 unwound from the web roll 31b
2 is continuously fed into the processing device following the web 32 unwound from the web roll 31a. in this case,
The side edge of the connection portion of the web has no steps and is straight.

Next, when the operator turns on an end switch (not shown), as shown in FIG. 8, the lower pester arm 45 is swung, and the lower pester roller 46 is returned to the original position. On the other hand, the raw material 32 remaining on the raw material roll 31a is wound up by a winding tube (not shown) and then discarded or recycled.

When the roll support shaft 12a is moved in the reverse direction by the above-mentioned amount, the displacement of the roll support shaft 12a with respect to the turret arm 11 is not accumulated.

By repeating the above operation, new raw rolls are sequentially set, the raw rolls are added and connected, and the raw rolls are continuously fed to the processing apparatus.

As described above, in the present embodiment, even if the axial positions of the outermost material in the radial direction and the innermost member in the radial direction of the material roll of the material roll 31b are displaced, the material roll 3
Since the axial position of the raw material 1a is adjusted, no step is formed on the side edge of the connection portion of the raw material. Since the position of the material roll 31b in the axial direction is always set at the initial setting position, the displacement does not accumulate and does not exceed the adjustment range.

Therefore, it is not necessary to stop the automatic splicing device and the processing device of the material roll and return the position of the material roll to the initial setting position.

Next, a second embodiment of the present invention will be described. In addition, about what has the same structure as 1st Embodiment, the description is abbreviate | omitted by attaching the same code | symbol.

FIG. 9 is a plan cross-sectional view of an automatic splicing apparatus for a web according to a second embodiment of the present invention.

In the present embodiment, the automatic splicing device for a raw material has a control device 60 as shown in FIG. The control device 60 includes a CPU (central operator) 61, a memory 6
2. It has an input means 63, a display device 64, and an I / O (input / output interface) 65, and through the I / O 65, a raw material side edge sensor 25, an encoder 27, a sensor moving motor 28, a motor drive control. Device 66 and rotation angle sensor 6
7a and 67b are connected to the control device 60 so that control signals can be transmitted and received.

The control device 60 controls the adjusting inner cylinder 1
Rotation of 8a, 18b, measurement of the distance L1 between the turret arm 11 and the side edge of the raw roll 31b as the second roll on the turret arm 11 side, and unreeling from the turret arm 11 and the raw roll 31a. Measurement of the initial value L0 with the side edge of the web 32 on the turret arm 11 side, detection of the angular position θ of the rotation angle sensor blocks 15a, 15b,
The operation of the automatic splicing device for the raw material, including the rotation of the turret arm 11 and the swing of the pester arm 45, is generally controlled. Note that the control device 60 is not independent, and may be integrated with another control device as a part of a control device such as a processing device into which the raw fabric 32 is fed.

Next, the operation of the automatic splicing apparatus of the above configuration will be described.

The operation up to the setting of the material roll 31a and the material roll 31b as the first material roll is the same as that of the first embodiment.

After setting the material roll 31b, when the operator inputs the execution of the material addition connection to the control device 60 by the input means 63, the control device 60 executes the program based on the program stored in the memory 62. Then, the following operation of connecting the foot of the source is automatically executed.

First, the material side edge sensor 25 is moved from the position shown in FIG. 9 by a command from the control device 60, or another sensor having the same configuration as the material side edge sensor 25 is used. Then, the distance L1 between the turret arm 11 and the side edge of the material roll 31b on the turret arm 11 side is automatically measured.

Next, according to a command from the control device 60, the turret arm 11 is moved as shown in FIG.
It is rotated counterclockwise and placed in the standby position, as shown in FIG.

Next, in response to a 0 command from the control device 60 via the motor drive control device 66, a motor (not shown) is rotated to rotate the adjustment inner cylinder 18a, and the raw material side sensor 25 detects it. The roll support shaft 12a is moved rightward in the figure until the numerical value becomes L1, and the distance between the turret arm 11 and one end (the left end in the figure) of the roll core 30a is adjusted to L1.

Next, in response to a command from the control device 60, the lower pester arm 45 is swung upward, the lower pester roller 46 is raised, and is placed near the connecting position of the foot.

Then, the controller 60 controls the material roll 31b based on the rotation angle of the roll support shaft 12b detected by the rotation angle sensor 67b detecting the angular position θ of the rotation angle sensor block 15b. The roll support shaft 12b is rotated such that the start end of the roll support shaft 12 is located at a position facing the lower pester roller 46.

Next, in response to a command from the control device 60, the lower pester roller 46 is further raised and placed at the splice connection position, and the raw material 32 fed out from the raw material roll 31a is removed from the raw material roll 31a. The raw roll 31b is pressed against the starting end of the raw roll 31b, and the starting end of the raw roll 31b is connected to the rear end of the raw roll 32 of the raw roll 31a.
At this time, at the same time, by a command from the control device 60,
Cutter 51 attached to lower pester arm 45
Operates to cut the vicinity of the rear end of the material roll 32 of the material roll 31a.

Next, in response to a command from the control device 60, the lower pester arm 45 is swung, and the lower pester roller 46 is returned to its original position.

When the roll support shaft 12a is moved in the reverse direction by the above-mentioned amount, the displacement of the roll support shaft 12a with respect to the turret arm 11 is not accumulated.

As described above, in the present embodiment, even if the axial positions of the outermost material in the radial direction and the innermost material in the radial direction of the material roll of the material roll 31b are shifted,
Since the control device 60 adjusts the position of the material roll 31a in the axial direction of the material roll 32a, no step occurs at the side edge of the connection portion of the material roll. Since the position of the material roll 31b in the axial direction is always set at the initial setting position, the displacement does not accumulate and does not exceed the adjustment range.

Accordingly, it is not necessary to stop the automatic splicing device and the processing device of the material roll and return the position of the material roll to the initial setting position.

Moreover, since the automatic splicing device of the raw material is automatically controlled by the control device 60, the operation can be performed accurately and the cost can be reduced.

The present invention is not limited to the above embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0072]

As described above in detail, according to the present invention, in the automatic splicing method, the raw material is unwound from the first roll, and immediately before the raw material of the first roll is consumed. Adjusting the position of the first roll in the axial direction to match the axial position of the starting end of the raw material of the second roll, and then, near the end of the raw material of the first roll, Add and connect the starting ends of the rolls of roll # 2.

In this case, even if the radially outermost and radially innermost positions of the material roll of the second roll are shifted from each other in the axial direction, the axial position of the material roll of the first roll is not changed. Since the adjustment is performed, there is no step on the side edge of the connection portion of the raw material. Since the position of the second roll in the axial direction is always set at the initial setting position, the deviation does not accumulate and does not exceed the adjustment range.

Accordingly, there is no need to stop the automatic splicing device and the processing device of the raw material and return the position of the roll to the initial setting position.

According to the present invention, in an automatic splicing apparatus for a web, a first setting means for setting a first roll,
A second setting means for setting a second roll;
First position adjusting means for adjusting the axial position of the roll, second position adjusting means for adjusting the axial position of the second roll, and the vicinity of the end of the raw material of the first roll And a connecting means for adding and connecting the starting end of the material roll of the second roll, and operating the first position adjusting means just before the material roll of the first roll is consumed. Then, the position of the first roll in the axial direction is adjusted to the position of the starting end of the material roll of the second roll in the axial direction, and then the foot connecting means is operated.

In this case, even if the radially outermost and radially innermost positions of the material roll of the second material roll are shifted from each other in the axial direction, the control device determines in advance that the first material roll has Since the position of the raw material in the axial direction is adjusted, no step is formed on the side edge of the connection portion of the raw material. Since the position of the second material roll in the axial direction is always set at the initial setting position, the displacement does not accumulate and does not exceed the adjustment range.

Therefore, there is no need to stop the automatic splicing device and the processing device of the raw material and return the roll position to the initial setting position.

In another automatic web splicing apparatus, just before the web of the first roll is consumed, the first position adjusting means is operated to move the first roll in the axial direction of the first roll. A control device for adjusting the position to the axial position of the start end of the second roll, and thereafter operating the foot connecting means.

In this case, the automatic splicing device of the raw material is automatically controlled by the control device, so that the operation can be performed accurately and the cost can be reduced.

In another automatic splicing device for a raw material,
The raw material side edge detecting means for detecting the side edge position of the first roll, and the raw material side edge detecting means for detecting the side edge position of the second roll, wherein the control device includes: 1st and 2nd
The position of the first roll in the axial direction is adjusted to the position of the starting end of the raw material of the second roll in the axial direction by using the raw material side edge detecting means for detecting the side edge position of the second roll.

In this case, since the side edge positions of the first and second rolls are automatically detected and the automatic splicing device of the raw material is automatically controlled, the operation can be performed more accurately, and the cost can be reduced. Can be lower.

[Brief description of the drawings]

FIG. 1 is a plan cross-sectional view of an automatic splicing device for a web according to a first embodiment of the present invention.

FIG. 2 is a side view of the automatic web splicing apparatus according to the first embodiment of the present invention.

FIG. 3 is a first diagram showing an operation of the automatic splicing apparatus for a web according to the first embodiment of the present invention.

FIG. 4 is a second diagram illustrating the operation of the automatic splicing device for a web according to the first embodiment of the present invention.

FIG. 5 is a third diagram illustrating the operation of the automatic splicing device for a web according to the first embodiment of the present invention.

FIG. 6 is a fourth diagram illustrating the operation of the automatic splicing apparatus for a web according to the first embodiment of the present invention.

FIG. 7 is a fifth diagram illustrating the operation of the automatic splicing apparatus for a web according to the first embodiment of the present invention.

FIG. 8 is a sixth diagram illustrating the operation of the automatic splicing apparatus for a web according to the first embodiment of the present invention.

FIG. 9 is a plan cross-sectional view of an automatic splicing device for a web according to the second embodiment.

[Explanation of symbols]

 12a, 12b Roll support shaft 13a, 13b Support shaft sleeve 17a, 17b Adjustable outer cylinder 18a, 18b Adjustable inner cylinder 19a, 19b Adjustment handle 23a, 23b Roll holder 31a, 31b Material roll 32 Material 45 Lower pester arm 49 Upper side Pester arm 60 controller

Claims (4)

[Claims] (A) feeding the raw material from the first roll; and (b) adjusting the axial position of the first roll just before the raw material of the first roll is consumed. hand,
Align with the axial position of the starting end of the material roll of the second roll,
(C) Then, near the end of the raw material of the first roll,
An automatic web splicing method, comprising adding and connecting a starting end of the web of the second roll. 2. A first setting means for setting a first roll, (b) a second setting means for setting a second roll, and (c) an axial position of the first roll. (D) second position adjusting means for adjusting the axial position of the second roll;
(E) near the end of the web of the first roll, the second
And (f) actuating the first position adjusting means immediately before the first roll material is consumed, and
An automatic splicing device for a web, wherein the position of the first roll in the axial direction is adjusted to the position of the start end of the web of the second roll in the axial direction, and then the foot connecting means is operated. . 3. Just before the raw material of the first roll is consumed, the first position adjusting means is operated to set the axial position of the first roll to the material of the second roll. 3. The automatic splicing device for a raw web according to claim 2, further comprising: a control device that adjusts the position of the start end of the web in the axial direction, and thereafter operates the foot connecting means. 4. A raw material side edge detecting means for detecting a side edge position of the first roll, and (b) a raw material side edge detecting means for detecting a side edge position of the second roll. (C)
The control device uses the raw material side edge detecting means for detecting the side edge positions of the first and second rolls, and determines the axial position of the first roll by using the raw material of the second roll. 4. The automatic splicing device for a web according to claim 3, wherein the starting end is adjusted to a position in the axial direction.