JPWO2017149609A1 - Absorbent article manufacturing method and manufacturing apparatus - Google Patents

Abstract

Generating an absorbent article (1s) based on the first material (3) supplied from the first material splicing device (20) and the second material (4) supplied from the second material splicing device (50) And the number of attachments per unit time of the first material coil to the one first rotating shaft and the other first rotating shaft according to the first material splicing device is the second material splicing The manufacturing method of an absorbent article more than the frequency | count of attachment per unit time of the said 2nd material coil to said one 2nd rotating shaft which concerns on an apparatus, and said other 2nd rotating shaft.

Description

  The present invention relates to a method for manufacturing an absorbent article such as a disposable diaper, and a manufacturing apparatus.

  In a disposable diaper production line as an example of an absorbent article, various materials 3 'related to the diaper are carried in the form of a material coil 3C' wound in a coil shape. As shown in FIG. 1A, before the material 3a ′ continuously fed out from the material coil 3Ca ′ disappears, the material splicing device 20 ′ is connected to the material coil 3Cf ′ that has not been fed out. By joining the material 3f ′, the material 3 ′ is continuously supplied to the processing apparatus of the production line without interruption.

  Specifically, the material splicing device 20 ′ has two rotation shafts 24 a ′ (24 ′) and 24 f ′ (24 ′) that can be driven and rotated while supporting the material coil 3 </ b> C ′. When one rotary shaft 24a ′ is driven to rotate, the material 3a is fed out as the preceding material 3a from the material coil 3Ca, and when the material 3a ′ of the material coil 3Ca ′ is likely to disappear, the other rotary shaft The material 3f ′ of the new material coil 3Cf ′ supported by 24f ′ is joined as the subsequent material 3f ′.

European Patent Application No. 2491909

  There are two types of such material splicing devices. In the first type, similarly to the material splicing device 20 ′ of Patent Document 1, the subsequent material 3 f ′ is joined to the preceding material 3 a ′ without stopping the rotation of the two rotation shafts 24 a ′ and 24 f ′. On the other hand, in the second type, as shown in FIG. 1B, the rotation of the two rotation shafts 64a ′ (64 ′) and 64f ′ (64 ′) is stopped and the subsequent material 3f ′ is joined to the preceding material 3a ′. To do.

Here, in the first type material splicing device 20 ′, if the worker attaches the material coil 3Cf ′ that is not advanced to the rotating shaft 24f ′ as a preparatory work for joining, the subsequent joining processing is performed by the device 20 'Performs almost automatically. Therefore, the workload of the worker is small. However, there is a problem that the material splicing device 20 ′ is expensive.
On the other hand, the second type material splicing device 60 'is inexpensive. However, in the apparatus 60 ′, as a preparatory work for joining, the operator not only attaches the subsequent material coil that has not been advanced to the rotating shaft 64f ′, but also attaches the material 3f ′ from the subsequent material coil 3Cf ′. There is a problem that it is necessary to pull out and set the tip 3fe ′ of the material 3f ′ to the predetermined member 67K ′ for joining, which is troublesome.

  Therefore, if all the material splicing devices in the production line are the first type material splicing device 20 ′, the equipment cost is increased. On the other hand, if all the material splicing devices are the second type material splicing device 60 ′, The work load of the person will increase.

  Therefore, it is conceivable to use both the first type material splicing device 20 ′ and the second type material splicing device 60 ′ from the viewpoint of achieving both of these.

  On the other hand, in the same production line, a plurality of types of materials 3 ′ are used as described above, but the consumption time from the material coil 3 </ b> C ′ to the absence of the materials 3 ′ varies depending on the type of the material 3 ′. For example, in one type of material 3 ', the material 3' disappears from the material coil 3C 'in 30 minutes, but in another type of material 3', the material 3 'disappears from the material coil 3C' in 60 minutes. As a result, there are a material 3 ′ with a large number of attachments to the rotating shaft 24 ′ (64 ′) of the material coil 3 </ b> C ′ per unit time and a material 3 ′ with a small number of attachments.

  If the material 3 ′ having a large number of attachments is made to correspond to the above-described second type material splicing device 60 ′, the preparatory work for joining is the first type material splicing device 20 ′. As a result, the workload of the operator may increase significantly.

  The present invention has been made in view of the conventional problems as described above, and its purpose is to suppress the increase in equipment cost due to the installation of the material splicing device, while reducing the work load of the operator. It is to make it possible to suppress the increase.

The main invention for achieving the above object is:
A method of manufacturing an absorbent article using a first material and a second material,
The first material splicing device joins the first material of the succeeding first material coil to the first material of the succeeding material as the first material of the succeeding material to the preceding first material that is continuously drawn out from the preceding first material coil. Supplying the succeeding first material continuously to the preceding first material;
The second material splicing device joins the second material of the subsequent second material coil as the second material of the subsequent material to the second material of the subsequent material that is continuously drawn out from the preceding second material coil. Supplying the subsequent second material in succession to the preceding second material;
Generating the absorbent article based on the first material supplied from the first material splicing device and the second material supplied from the second material splicing device,
The first material splicing device supports the preceding first material fed out from the preceding first material coil supported by one of the first rotating shafts that is driven to rotate, and the following first material coil. The first material of the succeeding first material is joined to the first material of the preceding by pressing toward the outer peripheral surface of the first material coil of the succeeding first rotating by the driving rotation operation of the other first rotating shaft,
The second material splicing device performs a feeding operation of one second rotating shaft that supports the preceding second material coil and a feeding operation of the other second rotating shaft that supports the succeeding second material coil. In a state where both are stopped, by joining the preceding second material and the succeeding second material, the succeeding second material is joined to the preceding second material,
The number of attachments per unit time of the first material coil to the one first rotating shaft and the other first rotating shaft related to the first material splicing device is the one of the one related to the second material splicing device. The absorbent article manufacturing method is characterized in that the number of attachments per unit time of the second material coil to the second rotating shaft and the other second rotating shaft is greater.
Also,
An apparatus for manufacturing an absorbent article using a first material and a second material,
By joining the first material of the succeeding first material coil as the first material of the succeeding first material that is continuously fed out from the first material coil, it is made continuous with the preceding first material. A first material splicing device for supplying the following first material;
By joining the second material of the succeeding second material coil as the second material of the succeeding second material that is continuously drawn out from the second material coil, the second material of the succeeding material is continuously connected to the preceding second material. A second material splicing device for supplying the second material following the
A generator that generates the absorbent article based on the first material supplied from the first material splicing device and the second material supplied from the second material splicing device;
The first material splicing device supports the preceding first material fed out from the preceding first material coil supported by one of the first rotating shafts that is driven to rotate, and the following first material coil. By pressing against the outer peripheral surface of the subsequent first material coil that is rotated by the drive rotation operation of the other first rotating shaft, the subsequent material is joined to the preceding material,
The second material splicing device performs a feeding operation of one second rotating shaft that supports the preceding second material coil and a feeding operation of the other second rotating shaft that supports the succeeding second material coil. In a state where both are stopped, by joining the preceding second material and the succeeding second material, the succeeding second material is joined to the preceding second material,
The number of attachments per unit time of the first material coil to the one first rotating shaft and the other first rotating shaft related to the first material splicing device is the one of the one related to the second material splicing device. The absorbent article manufacturing apparatus is characterized in that the number of attachments per unit time of the second material coil to the second rotating shaft and the other second rotating shaft is greater.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  According to the present invention, it is possible to suppress an increase in a worker's work load while suppressing an increase in equipment cost due to the installation of a material splicing device.

FIG. 1A is a schematic side view of an example of a first type material splicing device 20 ′, and FIG. 1B is a schematic side view of an example of a second type material splicing device 60 ′. 2A is a schematic plan view showing an example of a disposable diaper 1s as an absorbent article, and FIG. 2B is a cross-sectional view taken along line BB in FIG. 2A. FIG. 3A is a schematic side view of the production line LM for the disposable diaper 1s, and FIG. 3B is a schematic plan view of the line LM indicated by arrows BB in FIG. 3A. It is a schematic explanatory drawing of the 1st type material supply apparatus 10 which supplies the material 3 of the back sheet | seat 3s, Comprising: It is the IV-IV arrow line view in FIG. 3B. It is a schematic plan view shown by BB arrow in FIG. 4A. It is a schematic side view which expands and shows the principal part in FIG. 4A. It is a schematic explanatory drawing of the 2nd type material supply apparatus 50 which supplies the material 4 of the leak-proof sheet | seat 4s, Comprising: It is the VI-VI arrow line view in FIG. 3B. 7A to 7C are enlarged views of the VII portion in FIG. It is a schematic side view for demonstrating operation | movement of the 2nd type material splicing apparatus 60 after a joining process. It is a schematic enlarged view of the IX part in FIG. 3B. It is a schematic side view which shows the positional relationship of the up-down direction between the 1st type material splicing apparatus 20 and the 2nd type material splicing apparatus 60. FIG. It is a schematic side view of the 2nd type material splicing apparatus 60 which concerns on other embodiment. It is a figure equivalent to the IX section in Drawing 3B for explaining plane arrangement of the 2nd type material splicing device 60 concerning other embodiments.

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
A method of manufacturing an absorbent article using a first material and a second material,
The first material splicing device joins the first material of the succeeding first material coil to the first material of the succeeding material as the first material of the succeeding material to the preceding first material that is continuously drawn out from the preceding first material coil. Supplying the succeeding first material continuously to the preceding first material;
The second material splicing device joins the second material of the subsequent second material coil as the second material of the subsequent material to the second material of the subsequent material that is continuously drawn out from the preceding second material coil. Supplying the subsequent second material in succession to the preceding second material;
Generating the absorbent article based on the first material supplied from the first material splicing device and the second material supplied from the second material splicing device,
The first material splicing device supports the preceding first material fed out from the preceding first material coil supported by one of the first rotating shafts that is driven to rotate, and the following first material coil. The first material of the succeeding first material is joined to the first material of the preceding by pressing toward the outer peripheral surface of the first material coil of the succeeding first rotating by the driving rotation operation of the other first rotating shaft,
The second material splicing device performs a feeding operation of one second rotating shaft that supports the preceding second material coil and a feeding operation of the other second rotating shaft that supports the succeeding second material coil. In a state where both are stopped, by joining the preceding second material and the succeeding second material, the succeeding second material is joined to the preceding second material,
The number of attachments per unit time of the first material coil to the one first rotating shaft and the other first rotating shaft related to the first material splicing device is the one of the one related to the second material splicing device. The absorbent article manufacturing method is characterized in that the number of attachments per unit time of the second material coil to the second rotating shaft and the other second rotating shaft is greater.

  According to such a manufacturing method for absorbent articles, the second material splicing device, which has a large work load on the operator but is inexpensive, is made to correspond to the second material coil with a small number of attachments per unit time, and the work load is small. However, the expensive first material splicing device is made to correspond to the first material coil having a large number of attachments per unit time. Therefore, it is possible to suppress an increase in the work load of the operator while suppressing an increase in equipment cost due to the installation of the material splicing device.

A method of manufacturing such an absorbent article,
The feeding length of the second material fed out by the second material splicing device for the production of one absorbent article is fed out by the first material splicing device for the production of one absorbent article. It is desirable that it is shorter than the feeding length of the first material.

  According to such a method for manufacturing an absorbent article, the feeding length of the second material for the production of one absorbent article is shorter than the feeding length of the first material. Therefore, the number of attachments of the second material coil per unit time in the second material splicing device can be surely reduced as compared with the number of attachments of the first material coil per unit time in the first material splicing device.

A method of manufacturing such an absorbent article,
A first processing device that processes the first material conveyed from the first material splicing device;
The first support member that supports the first rotating shaft of the first material splicing device is preferably a member that is separate from the support member that supports the first processing device.

  According to such a method for manufacturing an absorbent article, since the first support member and the support member of the first processing apparatus are separate members, layout restrictions that may occur when the same support member is also used. Can be relaxed. That is, when the same supporting member is also used, the feeding direction of the first material in the first material splicing device and the conveying direction of the first material in the first processing device intersect in plan view. Although it becomes difficult to arrange, if the first support member is separate from the support member of the first processing apparatus as described above, it can be easily performed.

A method of manufacturing such an absorbent article,
A first processing device that processes the first material conveyed from the first material splicing device;
In the first material splicing device, the first material is fed out in a plan view with a first direction as a feeding direction, and in the first processing device, the first material is conveyed in a second direction intersecting the first direction in a plan view. Conveyed as direction,
A conveyance direction changing member is provided between the first material splicing device and the first processing device to change the conveyance direction of the first material in plan view from the first direction to the second direction. And
The first material splicing device has a turret capable of turning about a turning axis parallel to the first rotation axis, and the turret has the one first rotation axis at a position symmetrical with respect to the turning axis. The other first rotating shaft is rotatably supported;
The one first rotating shaft and the other first rotating shaft are movable at two positions set in the turning direction of the turret by the turning operation of the turret,
A second processing device that processes the second material conveyed from the second material splicing device;
In the second material splicing device, the second material is fed with the first direction as the feeding direction in a plan view, and in the second processing device, the second direction is conveyed with the second direction as a feeding direction in a plan view,
A conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction. And
The one second rotating shaft and the other second rotating shaft of the second material splicing device are arranged in a fixed position side by side in the first direction,
It is desirable that the turning shaft of the turret of the first material splicing device is located between the one second rotating shaft and the other second rotating shaft in the first direction.

  According to such a method for manufacturing an absorbent article, the turning shaft of the turret of the first material splicing device is configured so that the second rotation shaft of one of the second material splicing devices and the other second rotation shaft of the second material splicing device are in the first direction. Located between. Therefore, the protrusion amount of the first material splicing device from the second material splicing device in the first direction can be suppressed, and as a result, the size of the manufacturing line for performing this manufacturing method can be reduced in the first direction. And thereby, a worker's flow line can be shortened and the work load can be reduced.

A method of manufacturing such an absorbent article,
A first processing device that processes the first material conveyed from the first material splicing device;
In the first material splicing device, the first material is fed out in a plan view with a first direction as a feeding direction, and in the first processing device, the first material is conveyed in a second direction intersecting the first direction in a plan view. Conveyed as direction,
A conveyance direction changing member is provided between the first material splicing device and the first processing device to change the conveyance direction of the first material in plan view from the first direction to the second direction. And
The first material splicing device has a turret capable of turning about a turning axis parallel to the first rotation axis, and the turret has the one first rotation axis at a position symmetrical with respect to the turning axis. The other first rotating shaft is rotatably supported;
The one first rotating shaft and the other first rotating shaft are movable at two positions set in the turning direction of the turret by the turning operation of the turret,
One of the two positions is farther from the first processing device in the first direction than the other position.
When the one first rotating shaft is located at the one position, it is desirable to attach a new first material coil to the one first rotating shaft.

  According to such a method for manufacturing an absorbent article, when the one first rotating shaft is positioned at the one position far from the first processing apparatus, a new first material is added to the first rotating shaft. Install the coil. Therefore, the attachment work can be performed at a safe position away from the first processing apparatus.

A method of manufacturing such an absorbent article,
A second processing device that processes the second material conveyed from the second material splicing device;
In the second material splicing device, the second material is fed with the first direction as the feeding direction in a plan view, and in the second processing device, the second direction is conveyed with the second direction as a feeding direction in a plan view,
A conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction. And
The one second rotation shaft and the other second rotation shaft of the second material splicing device are arranged in a fixed position side by side in the first direction, and the one second rotation shaft Is farther from the second processing device in the first direction than the other second rotation axis,
When the second material coil that has not been fed out is supported on the one second rotating shaft, the one of the first material splicing devices is within a range of the first direction in which the second material coil exists. It is desirable that the first rotating shaft located at the position of is included.

  According to such a method for manufacturing an absorbent article, a new first material coil is attached to the first rotating shaft at the one position of the first material splicing device. The first rotation shaft located at is included in the existence range of the second material coil in the undrawn state supported by the one rotation shaft of the second material splicing device in the first direction. Therefore, the operator can move the position of the one rotation shaft of the second material splicing device and the one position of the first material splicing device with a relatively short flow line, As a result, the attachment work of the first material coil to the first rotation shaft and the attachment work of the second material coil to the second rotation shaft can be efficiently performed.

A method of manufacturing such an absorbent article,
A second processing device that processes the second material conveyed from the second material splicing device;
In the second material splicing device, the second material is fed with the first direction as the feeding direction in a plan view, and in the second processing device, the second direction is conveyed with the second direction as a feeding direction in a plan view,
A conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction. And
The one second rotating shaft and the other second rotating shaft of the second material splicing device are arranged in a fixed position side by side in the first direction,
When the one first rotating shaft is located at the one position of the first material splicing device, the first rotating shaft is connected to the one second rotating shaft of the second material splicing device in the vertical direction and It is desirable to be located above the other second rotation axis.

  According to such a method for manufacturing an absorbent article, at the one position of the first material splicing device, a new first material coil is attached to the first rotating shaft from which the preceding material has been delivered. However, here, the vertical position of the first rotating shaft is located above the second rotating shaft of the second material splicing device. Therefore, it is easy to visually confirm the state of the first rotating shaft with a large number of attachments even from a distance, and this makes it possible to quickly remove this if the forgetting to attach a new first material coil to the first rotating shaft. Can be found in.

A method of manufacturing such an absorbent article,
A first processing device that processes the first material conveyed from the first material splicing device;
In the first material splicing device, the first material is fed out in a plan view with a first direction as a feeding direction, and in the first processing device, the first material is conveyed in a second direction intersecting the first direction in a plan view. Conveyed as direction,
A conveyance direction changing member is provided between the first material splicing device and the first processing device to change the conveyance direction of the first material in plan view from the first direction to the second direction. And
The first material splicing device has a turret capable of turning about a turning axis parallel to the first rotation axis, and the turret has the one first rotation axis at a position symmetrical with respect to the turning axis. The other first rotating shaft is rotatably supported;
The one first rotating shaft and the other first rotating shaft are movable at two positions set in the turning direction of the turret by the turning operation of the turret,
A second processing device that processes the second material conveyed from the second material splicing device;
In the second material splicing device, the second material is fed with the first direction as the feeding direction in a plan view, and in the second processing device, the second direction is conveyed with the second direction as a feeding direction in a plan view,
A conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction. And
The one second rotating shaft and the other second rotating shaft of the second material splicing device are respectively disposed at fixed positions in the first direction,
The first direction of the turning trajectory drawn by the first material coil when the turret turns around the turning axis in a state in which the first material coil that has not been fed out is supported by the one first rotating shaft. It is desirable that the one second rotating shaft and the other second rotating shaft of the second material splicing device are included in the range of.

  According to such a method for manufacturing an absorbent article, the first material splicing device has a first trajectory in the first direction of the turning trajectory drawn by the first material coil in the undrawn state when the turret of the first material splicing device turns around the turning axis. The one second rotating shaft and the other second rotating shaft of the two-material splicing device are included. Therefore, the protrusion amount of the second material splicing device in the first direction from the first material splicing device can be suppressed, and as a result, the size of the manufacturing line for performing this manufacturing method can be reduced in the first direction. And thereby, a worker's flow line can be shortened and the work load can be reduced.

A method of manufacturing such an absorbent article,
The first material is a pulp air laid nonwoven fabric,
It is desirable to cut and produce the absorbent body according to the absorbent article from the pulp air laid nonwoven fabric.

  According to such a method for manufacturing an absorbent article, it is possible to suppress an increase in a worker's work load. That is, since the above-described pulp air laid nonwoven fabric is generally thick, the number of attachments of the material coil per unit time is increased. Here, the pulp air laid nonwoven fabric is a first material joint having a small work load on the operator. Supplied by the device. Therefore, it is possible to effectively suppress an increase in work load due to a large number of attachments.

Also,
An apparatus for manufacturing an absorbent article using a first material and a second material,
By joining the first material of the succeeding first material coil as the first material of the succeeding first material that is continuously fed out from the first material coil, it is made continuous with the preceding first material. A first material splicing device for supplying the following first material;
By joining the second material of the succeeding second material coil as the second material of the succeeding second material that is continuously drawn out from the second material coil, the second material of the succeeding material is continuously connected to the preceding second material. A second material splicing device for supplying the second material following the
A generator that generates the absorbent article based on the first material supplied from the first material splicing device and the second material supplied from the second material splicing device;
The first material splicing device supports the preceding first material fed out from the preceding first material coil supported by one of the first rotating shafts that is driven to rotate, and the following first material coil. By pressing against the outer peripheral surface of the subsequent first material coil that is rotated by the drive rotation operation of the other first rotating shaft, the subsequent material is joined to the preceding material,
The second material splicing device performs a feeding operation of one second rotating shaft that supports the preceding second material coil and a feeding operation of the other second rotating shaft that supports the succeeding second material coil. In a state where both are stopped, by joining the preceding second material and the succeeding second material, the succeeding second material is joined to the preceding second material,
The number of attachments per unit time of the first material coil to the one first rotating shaft and the other first rotating shaft related to the first material splicing device is the one of the one related to the second material splicing device. The absorbent article manufacturing apparatus is characterized in that the number of attachments per unit time of the second material coil to the second rotating shaft and the other second rotating shaft is greater.

  According to such an absorbent article manufacturing apparatus, the same effects as those of the manufacturing method described above can be achieved.

=== This Embodiment ===
The manufacturing method and manufacturing apparatus for absorbent articles according to the present embodiment are used in a manufacturing line LM for disposable diapers 1s. That is, in this embodiment, the disposable diaper 1s is manufactured as an example of an absorbent article based on the manufacturing method and the manufacturing apparatus.

  FIG. 2A is a schematic plan view showing an example of a disposable diaper 1s. 2B is a cross-sectional view taken along the line BB in FIG. 2A.

  The diaper 1s includes an absorbent body 1k that absorbs excrement such as urine, a liquid-permeable top sheet 2s disposed on the skin side of the absorbent body 1k, and a back disposed on the non-skin side of the absorbent body 1k. A sheet 3s, and a liquid-impermeable leak-proof sheet 4s disposed between the absorbent body 1k and the back sheet 3s to prevent leakage of excrement to the non-skin side. In the unfolded state of FIG. 2A, the top sheet 2s and the back sheet 3s have substantially the same hourglass shape in plan view, and the leakage preventing sheet 4s has the dimensions in the longitudinal direction and the width direction of the diaper 1s. It is made into the substantially rectangular shape in planar view of the dimension smaller than that of the sheet | seat 2s and the back sheet | seat 3s.

  In this example, the top sheet 2s and the back sheet 3s are made of non-woven fabrics containing thermoplastic resin fibers such as polyethylene and polypropylene as materials 2 and 3, and the leak-proof sheet 4s is made of a thermoplastic resin film such as polyethylene. Is material 4.

FIG. 3A is a schematic side view of the production line LM for the diaper 1s, and FIG. 3B is a schematic plan view of the line LM indicated by arrows BB in FIG. 3A. In addition, in FIG. 3A and FIG. 3B, in order to prevent the complication of a figure, what should be visible may be abbreviate | omitted.
As shown in FIG. 3A, any material 2, 3, 4 of the top sheet 2s, the back sheet 3s, and the leak-proof sheet 4s is brought into the production line LM by the continuous sheets 2, 3, 4 as materials. It is made in the form of material coils 2C, 3C, 4C which are wound around a paper tube p (FIG. 4A) in a coil shape. The various material coils 2C, 3C, and 4C are mounted on the material supply devices 10, 10, and 50 provided in the production line LM for each type of the materials 2, 3, and 4, respectively. , 4 are fed out. Each material 2, 3 and 4 is subjected to processing such as pressing and cutting by various processing devices 110, 110 (corresponding to the generation device) while being transported along a predetermined transport path in the production line LM. In addition, the material is polymerized with other materials 2, 3, 4 and other members such as the absorbent body 1k to finally produce the disposable diaper 1s.

  Examples of the processing apparatus 110 include a fiber stacking apparatus 110a, a cutting apparatus 110b, a pressing apparatus 110c, a leg hole cutting apparatus 110d, an end cutting apparatus 110e, and the like. In addition, each apparatus 110a, 110b ... has the following functions, for example.

  The fiber stacking apparatus 110a generates the absorbent body 1k using, for example, liquid absorbent fibers such as pulp fibers as a main material.

  The cutting device 110b (corresponding to the first processing device and the second processing device) cuts the material 4 sent from the material coil 4C of the leak-proof sheet 4s into a single sheet to generate the leak-proof sheet 4s, and the conveyance direction Each of the leak-proof sheets 4s, 4s,... Is conveyed with a space between the leak-proof sheets 4s, 4s adjacent to each other. And each leak-proof sheet | seat 4s is joined to the material 3 sent from the material coil 3C of the back sheet | seat 3s with the state which left | separated this space | interval. In addition, as an example of this cutting device 110b, a well-known slip cutting device (for example, Unexamined-Japanese-Patent No. 2011-083547) can be illustrated.

  The press device 110c (corresponding to the first processing device and the second processing device) presses the materials 2, 3 and the like with a pair of upper and lower rolls. For example, in this example, the material 2 sent from the material coil 2C of the top sheet 2s is placed on the upper surface of the pressing device 110c, while the absorber 1k is placed on the upper surface, and further from above, the above-described leakage-proof sheet 4s. Is transported in a state where the materials 3 of the back sheet 3s joined together are overlapped. Therefore, the press device 110c presses and integrates these materials 2, 3 and the like in the thickness direction, thereby generating the base material 1 of the diaper 1s.

  The leg hole cutting device 110d (corresponding to the first processing device) has a cutter roll as an upper roll and an anvil roll as a lower roll. And the leg periphery opening part is formed in the base material 1 passing the said base material 1 sent from the press apparatus 110c between both rolls.

  The end cut device 110e (corresponding to the first processing device) has a cutter roll as an upper roll and an anvil roll as a lower roll. And the diaper 1s is cut | disconnected and produced | generated from the base material 1, passing the base material 1 sent from the leg hole cutting apparatus 110d between both rolls.

  In the following description, the three directions orthogonal to each other in the production line LM are referred to as an X direction, a Y direction, and a Z direction, respectively. Here, as shown in FIG. 3B, the X direction and the Y direction are each oriented in the horizontal direction, but as shown in FIG. 3A, the Z direction is oriented in the vertical direction. Further, as shown in FIG. 3B, the X direction and the Y direction are orthogonal to each other. The X direction corresponds to the “second direction” according to the claims, and the Y direction corresponds to the “first direction” according to the claims.

  In the production line LM, the processing apparatuses 110a, 110b... Are arranged side by side along the X direction. Therefore, basically, in each processing apparatus 110a, 110b ..., each material 2, 3, and 4 are each conveyed along the X direction by planar view.

  As shown in FIG. 3B, in this production line LM, from the viewpoint of reducing the overall length of the line LM in the X direction, the material supply devices 10, 10, 50 are respectively processed by the processing devices 110a, 110b,. Is located at a position shifted in the Y direction. Therefore, the supply of the materials 2, 3, 4 from the material supply devices 10, 10, 50 to the processing devices 110a, 110b... Is mainly performed along the Y direction. That is, after the materials 2, 3, and 4 fed out along the Y direction in the material supply devices 10, 10, and 50 are transported along the Y direction, the transport direction is changed in the X direction by a turn bar TB described later. Thus, the materials 2, 3, and 4 are supplied to the processing apparatuses 110a, 110b,.

  On the other hand, as shown to FIG. 3B, each material supply apparatus 10,10,50 has the material splicing apparatus 20,20,60, respectively. And each material splicing device 20,20,60 is respectively with respect to the material 2a, 3a, 4a before the preceding material 2a, 3a, 4a being extended | stretched from material coil 2Ca, 3Ca, 4Ca is lost. The materials 2f, 3f, 4f of the other material coils 2Cf, 3Cf, 4Cf that have not been fed out are joined as the subsequent materials 2f, 3f, 4f, thereby leading to the processing devices 110b, 110c,. The materials 2 (2a, 2f), 3 (3a, 3f), and 4 (4a, 4f) are continuously supplied without interruption.

  Here, there are two types of the material splicing devices 20 and 60. That is, in the first type (FIG. 4A), the rotation of the feeding rotary shaft 24 that supports the preceding material coil 3Ca and the feeding rotary shaft 24 that supports the subsequent material coil 3Cf is stopped without stopping the rotation. The succeeding material 3f is joined to the preceding material 3a. On the other hand, in the second type (FIG. 6), the rotation of both the feeding rotary shaft 64 that supports the preceding material coil 4Ca and the feeding rotary shaft 64 that supports the following material coil 4Cf is stopped. The succeeding material 4f is joined to the preceding material 4a.

  In the present embodiment, for the material 2 of the top sheet 2s and the material 3 of the back sheet 3s, the material supply device 10 (hereinafter referred to as the first type material) having the first type material splicing device 20, respectively. Also referred to as supply device 10). On the other hand, a material supply device 50 having a second type material splicing device 60 (hereinafter also referred to as a second type material supply device 50) is used for the material 4 of the leak-proof sheet 4s.

Hereinafter, the material supply devices 10 and 50 of the first type and the second type will be described.
<<< First Type Material Supply Device 10 Having First Type Material Jointing Device 20 >>>
4A and 4B are schematic explanatory views of the material supply apparatus 10 that supplies the material 3 of the backsheet 3s. 4A is a view taken in the direction of arrows IV-IV in FIG. 3B, and FIG. 4B is a schematic plan view shown in the direction of arrows BB in FIG. 4A. FIG. 5 is an enlarged schematic side view showing the main part in FIG. 4A. 4A, FIG. 4B, and FIG. 5 are shown with members omitted as appropriate for the purpose of preventing the complication of the drawings. The basic configuration of the material supply apparatus 10 that supplies the material 2 of the top sheet 2s is generally the same as that of the material supply apparatus 10 according to the material 3 of the back sheet 3s. Therefore, the description is omitted.

  The material supply device 10 includes a first type material splicing device 20 (corresponding to a first material splicing device). And this material splicing device 20 is applied to the material 3a before there is no preceding material 3a (corresponding to the preceding first material) being fed out from the material coil 3Ca (corresponding to the preceding first material coil). The material 3f of another material coil 3Cf (corresponding to the following first material coil) in the undrawn state is joined as the succeeding material 3f (corresponding to the following first material), thereby producing the production line. The material 3 (3a, 3f) is continuously supplied to the LM processing apparatus 110 without interruption. Further, a storage device 40 for storing the material 3 (3a, 3f) sent from the material splicing device 20 in the form of a loop 3L is provided at a position downstream of the material splicing device 20 in the transport direction. . And thereby, the tension | tensile_strength fluctuation | variation of the material 3 (3a, 3f) is suppressed. Further, a turn bar TB is provided as a transport direction changing member on the downstream side of the storage device 40 in the transport direction. Then, the conveyance direction of the material 3 is changed from the Y direction to the X direction by the turn bar TB, and as a result, the material 3 is sent to the processing apparatus 110 with the conveyance direction changed to the X direction.

Hereinafter, each structure 20,40, TB concerning the 1st type material supply apparatus 10 is demonstrated.
(1) First type material splicing device 20
As shown in FIGS. 4A and 4B, the first-type material splicing device 20 includes a plate-like support member 21 (corresponding to the first support member) erected on the floor LMB of the production line LM, and the X direction. A strip-shaped turret 22 supported by the support member 21 so as to be able to turn around a turning axis C22 along the rotation axis, and two feeding rotary shafts 24 provided at both ends in the longitudinal direction of the turret 22 along the X direction. , 24, a servo motor (not shown) that drives and rotates the turret 22, each servo motor (not shown) that drives and rotates the two feeding rotary shafts 24 and 24, and one feeding rotary shaft 24 (one The preceding material 3a being fed out on the outer peripheral surface 3Cfs of the succeeding material coil 3Cf supported by the other feeding rotating shaft 24 (corresponding to the other first rotating shaft). Push Only has a press mechanism 26 for bonding the materials 3f of the rear row, the cutter mechanism 28 to separate the material 3a at the same time prior and after the said joining or bonding the paper tube p of the preceding material coil 3Ca, a. The servo motors and the mechanisms 24, 26, and 28 are controlled by a controller (not shown) such as a computer or a sequencer included in the production line LM.

  The two feeding rotating shafts 24 and 24 are provided symmetrically with respect to the turning axis C22 of the turret 22. Therefore, by turning the turret 22 around the turning axis C22, the positions of each other can be switched. Further, both of the feeding rotating shafts 24 and 24 can be supported by being inserted into the central paper tube p of the material coil 3C. In the state where the insertion is supported, the feeding rotary shaft 24 is driven to rotate, so that the material 3 is fed out from the material coil 3C along the Y direction in plan view.

  Further, the two feeding rotary shafts 24 and 24 basically perform this feeding operation alternately. That is, while the one feeding rotary shaft 24 feeds the material 3a from the material coil 3Ca, the other feeding rotary shaft 24 is in a standby state which is a non-feeding state. If the material 3a of one of the feeding rotary shafts 24 is almost gone, the material 3a is set as the preceding material 3a, and the material of the uncoiled material coil 3Cf attached to the other feeding rotary shaft 24 is used. These materials 3a and 3f are joined by using 3f as a subsequent material 3f. Therefore, thereafter, the other feeding rotating shaft 24 feeds and supplies the material 3f from the succeeding material coil 3Cf. Further, when the material 3f of the other feeding rotary shaft 24 is almost gone, this time, the material 3f is set as the preceding material and the unpaid newly attached to the one feeding rotary shaft 24 is used. The same processing as described above is repeated with the material coil 3Cn in the state as the subsequent material coil.

  As shown in FIG. 4A, in this example, for the purpose of smoothly performing the joining process, a succeeding material coil 3Cf that is in an undrawn state during the joining process is positioned in the turning direction of the turret 22. A power succeeding material coil position P3Cf and a preceding material coil position P3Ca where the preceding material coil 3Ca in the extended state during the joining process should be positioned are set. In this example, the former succeeding material coil position P3Cf and the latter preceding material coil position P3Ca are set on both sides in the Y direction, and the height in the vertical direction (Z direction) is the same height. There is no limitation to this. Further, in this example, the feeding rotary shaft 24 rotates counterclockwise, so that the material coils 3Ca and 3Cf feed the materials 3a and 3f from below. Therefore, a conveyance path for the material 3a fed out from the preceding material coil 3Ca is set below the subsequent material coil 3Cf located at the subsequent material coil position P3Cf, and further below this conveyance path. The press mechanism 26 and the cutter mechanism 28 are arranged.

  The press mechanism 26 is supported so as to be able to swing around a rotation axis C26A along the X direction, and to be supported around a rotation axis C26R along the X direction at the swing end portion of the arm member 26A. A press roll 26R, and an actuator 26C such as an air cylinder that drives the arm member 26A. Then, based on the swinging motion of the arm member 26A, the press roll 26R presses the preceding material 3a against the material 3f on the outer peripheral surface 3Cfs of the succeeding material coil 3Cf from below, thereby causing the preceding material 3a and the following material 3a to follow. The material 3f is joined at a predetermined joining position Pj (FIG. 5).

  In addition, about this press roll 26R, it is good also as a driven roll which obtains a rotational force by the contact with the material 3, and rotates, or obtains a driving rotational force from drive sources, such as a servomotor, as a driving roll which carries out a driving rotation. Also good. Incidentally, in the case of a driving roll, for example, the rotational speed (rpm) is controlled based on a command value (mpm) described later.

  As shown in FIG. 4A, the cutter mechanism 28 includes an arm member 28A supported so as to be swingable about a rotation axis C28A along the X direction, and a cutter fixed to the swing end of the arm member 28A. It has a blade 28B and an actuator 28C such as an air cylinder that drives the arm member 28A. Then, based on the swinging motion of the arm member 28A, the cutter blade 28B at the standby position Pw28B approaches and contacts the preceding material 3a from below, so that the preceding material 3a is brought into contact with the aforementioned joining position Pj. Cutting is performed at a position between (FIG. 5) and the feeding rotary shaft 24 at the preceding material coil position P3Ca (FIG. 4A) (FIG. 5). As a result, the preceding material 3 a joined to the succeeding material 3 f is separated from the paper tube p of the feeding rotating shaft 24.

  Here, this joining process will be described in more detail with reference to FIG. 4A. First, at the time before the joining process, the double-faced tape 7j is already provided on the surface of the tip 3fe of the material 3f located on the outer peripheral surface 3Cfs of the succeeding material coil 3Cf. A double-sided tape 7k for temporary fixing is provided on the back surface of the tip portion 3fe so that the tip portion 3fe is not separated from the material coil 3Cf. On the other hand, for the preceding material 3a, based on the command value of the supply speed value V3 (mpm) requested from the processing device 110 side, the feeding speed value (mpm) of the preceding material 3a becomes the above command value. Then, while the controller controls the number of revolutions (rpm) of the feeding rotary shaft 24, the feed shaft is conveyed along the Y direction. That is, the rotation of the feeding rotary shaft 24 is controlled with the rotation speed (rpm) at which the feed speed value (mpm) becomes the command value.

  When the controller determines that the remaining amount of the material 3a of the preceding material coil 3Ca has become equal to or less than the specified value, the controller starts the joining process. That is, the rotational speed (rpm) of the feeding rotary shaft 24 that supports the subsequent material coil 3Cf is reduced to a command rotational speed (rpm) at which the peripheral speed value (mpm) of the material coil 3Cf becomes the command value. To accelerate. When the controller determines that the rotation speed has reached the command rotation speed and determines that the tip 3fe has reached the position immediately before the press roll 26R of the press mechanism 26, the controller performs the press roll 26R. Thus, as shown in FIG. 5, the above-mentioned actuator 26C is moved so that the roll 26R at the standby position Pw26R moves toward the outer peripheral surface 3Cfs of the succeeding material coil 3Cf, and the preceding material 3a is moved. Press against the outer peripheral surface 3Cfs of the subsequent material coil 3Cf. During this pressing, the leading end 3fe of the succeeding material coil 3Cf passes through the position of the press roll 26R, so that the leading end 3fe is preceded by the double-sided tape 7j for joining. The material 3a is joined. Then, the controller controls the actuator 26C to move the press roll 26R to the standby position Pw26R in a direction away from the subsequent material coil 3Cf, and also controls the cutter mechanism 28 as shown in FIG. Then, the preceding material 3a is cut, whereby the preceding material 3a is separated from the paper tube p. As a result, the succeeding material 3f is joined to the preceding material 3a without stopping the feeding operation. That is, the rotation of the rotating shaft 24 for supporting the preceding material coil 3Ca and the rotating shaft 24 for supporting the succeeding material coil 3Cf is stopped without stopping the rotation of the preceding material coil 3C. The material 3f is joined.

  Then, the controller decelerates the rotational speed of the feeding rotary shaft 24 at the preceding material coil position P3Ca in FIG. 4A and stops the rotation of the rotary shaft 24. Then, the operator removes the paper tube p of the preceding material 3a from the feeding rotary shaft 24 at the same position P3Ca, and inserts and attaches a new material coil 3Cn that has not been fed to the rotary shaft 24. Further, the double-sided tape 7j for bonding described above is provided on the surface of the tip 3ne of the material 3n located on the outer peripheral surface 3Cns of the new material coil 3Cn, and the double-sided tape 7k for temporary fixing is provided on the back surface. Is provided.

  When the controller determines that the conditions for turning the turret 22 are satisfied, that is, the outer diameter of the succeeding material coil 3Cf located at the succeeding material coil position P3Cf is reduced by the feeding, and the coil 3Cf is manufactured. When the controller determines that the turret 22 can turn without interference with the floor LMB of the line LM, the press roll 26R at the standby position Pw26R, the cutter blade 28B at the standby position Pw28B, etc., the controller turns on the servomotor of the turret 22 Control and turn the turret 22 clockwise. As a result, the succeeding material coil 3Cf is moved downward along the circular arc trajectory and then moved upward. As a result, the material coil 3Cf is moved to the preceding material coil position P3Ca, and the above-mentioned undrawn The new material coil 3Cn in the state is moved to the subsequent material coil position P3Cf. Then, when the timing of the next joining process comes, the controller repeats the above joining process.

(2) Storage device 40
As shown in FIG. 4A, the storage device 40 is a device that stores the preceding material 3a or the succeeding material 3f fed out from the material splicing device 20 in the form of a loop 3L so that it can be sent to the turn bar TB. Then, by adjusting the size of the loop 3L, the tension fluctuation of the material 3 is absorbed and suppressed, and the material 3 in which the tension fluctuation is suppressed is sent to the turn bar TB.

  The storage device 40 having such a function is guided so as to reciprocate in a predetermined direction (substantially Y direction) in which the size of the loop 3L can be changed, and a pair of fixed position rolls 41u and 41d supported rotatably at a fixed position. A single moving roll 41m, and an arm member 41A supported so as to be swingable about a rotation axis C41A along the X direction so as to guide the moving roll 41m so as to be reciprocally movable in the predetermined direction. Each of the rolls 41u, 41m, and 41d is supported so as to be rotatable around the rotation axes C41u, C41m, and C41d along the X direction. In addition, the material 3 includes the rolls 41u, 41u, 41d in the order of the fixed position roll 41u, the moving roll 41m, and the fixed position roll 41d located on the upstream side in the transport direction of the pair of fixed position rolls 41u, 41d. The loop 3L of the material 3 is formed by being hung around 41m and 41d. Further, a predetermined load (N) is applied to the moving roll 41m from the actuator 41C such as an air cylinder via the arm member 41A in the direction of increasing the loop 3L. Therefore, when the tension (N) of the material 3 is smaller than a predetermined value based on the predetermined load, the moving roll 41m moves so that the loop 3L becomes large, but the tension (N) of the material 3 is the predetermined value. If larger, the moving roll 41m moves so that the loop 3L becomes smaller. The size of the loop 3L is measured by an appropriate sensor (not shown) such as a linear encoder or a rotary encoder, and this measurement signal is transmitted to the controller. Therefore, the controller corrects the command rotational speed (rpm) of the feeding rotary shafts 24 and 24 of the material splicing device 20 based on this measurement signal so that the size of the loop 3L becomes constant, and the result The tension fluctuation of the material 3 is suppressed.

  It should be noted that various correction methods can be used for the above-described correction processing of the command rotational speed. For example, as the correction process, the following process may be repeated at a predetermined control cycle. First, the actual value of the size of the current loop 3L is obtained based on the measurement signal of the sensor, and the deviation amount is obtained by subtracting the target value of the size of the loop 3L from the actual value. Next, the control amount is calculated by multiplying the deviation amount by a predetermined control gain, and the control amount is subtracted from the above-mentioned designated rotation speed (rpm), and the subtraction value is fed out as a corrected command rotation speed. The servo motor of the rotary shaft 24 is controlled.

  The correction process is performed not only on the feeding rotary shaft 24 that feeds the preceding material 3a, but also at least the following material 3f on the feeding rotary shaft 24 that feeds the succeeding material 3f. Is performed after the joining to the preceding material 3a (for example, after joining), preferably from immediately before joining or from the start of the rotational operation of the rotary shaft 24. As a result, it is possible to reliably suppress later-described tension fluctuation from the first turn (first turn) of the outer periphery of the subsequent material coil 3Cf.

(3) Turn bar TB
As shown in FIGS. 4A and 4B, the turn bar TB changes the conveyance direction of the material 3 sent from the storage device 40 from the Y direction to the X direction, and sends the material 3 to the processing device 110. For this turn bar TB, for example, a round bar having a predetermined diameter such as a stainless steel polishing bar is used. That is, as shown in FIG. 4B, the longitudinal direction of the round bar TB is arranged so as to be immovable and non-rotatable while facing the same angle of 45 ° from both the X and Y directions. Yes. Therefore, when the material 3 is wound around the turn bar TB, the conveyance direction of the material 3 is changed by 90 ° from the Y direction to the X direction.

<<< Second Type Material Supply Device 50 Having Second Type Material Jointing Device 60 >>>
FIG. 6 is a schematic explanatory diagram of the material supply device 50 that supplies the material 4 of the leak-proof sheet 4s. 6 is a view taken in the direction of arrows VI-VI in FIG. 3B. 7A to 7C are enlarged views of the VII portion in FIG. In FIGS. 6 and 7A to 7C, members are appropriately omitted for the purpose of preventing complication of the drawings.

  The material supply device 50 includes a second type material splicing device 60 (corresponding to a second material splicing device). That is, in this material splicing device 60, first, before there is no preceding material 4a (corresponding to the preceding second material) being fed out from the preceding material coil 4Ca (corresponding to the preceding second material coil), the same material The rotation of one feeding rotary shaft 64 that supports the coil 4Ca is stopped. Then, the material 4f of the succeeding material coil 4Cf (corresponding to the second material coil of the succeeding material) that has not been fed and supported by the other feeding rotating shaft 64 in the rotation stopped state is replaced with the material 4f of the succeeding material (the rear material 4f). It corresponds to the second material in the line) and is joined to the preceding material 4a in the feed-out stopped state, thereby continuously supplying the material 4 (4a, 4f) to the processing device 110 of the production line LM without interruption. To do. A storage device 90 for storing the material 4 (4a, 4f) sent from the material splicing device 60 in the form of a loop 4L is provided at a position downstream of the material splicing device 60 in the transport direction. . As a result, the material 4 can be continuously supplied to the processing device 110 even when the material 4 is not sent from the material splicing device 60 as described above. Further, as in the case of the first type described above, also in the second type, a turn bar TB is provided as a transport direction changing member on the downstream side of the storage device 90 in the transport direction. Then, the conveyance direction of the material 4 is changed from the Y direction to the X direction by the turn bar TB. As a result, the material 4 is sent to the processing apparatus 110 in a state where the conveyance direction is changed to the X direction.

  Hereinafter, each structure 60,90, TB which concerns on the 2nd type material supply apparatus 50 is demonstrated. However, since the turn bar TB has the same structure as described above, the description thereof is omitted.

(1) Second type material splicing device 60
The second type material splicing device 60 includes a plate-like support member 61 erected on the floor LMB of the production line LM, and two X-direction members that are rotatably supported at a fixed position in the support member 61. Two feeding rotary shafts 64, 64, two servo motors (not shown) that independently drive and rotate the two feeding rotary shafts 64, 64, and one feeding rotary shaft 64 (corresponding to one second rotating shaft). ) Is joined to the preceding material 4a drawn from the succeeding material coil 4Cf supported by the other feeding rotating shaft 64 (corresponding to the other second rotating shaft). A joining mechanism 66. The servo motors and the mechanisms 64 and 66 are controlled by the above-described controller of the production line LM.

  The two feeding rotation shafts 64 and 64 are arranged in a fixed position side by side in the Y direction. In this example, the positions of the two feeding rotation shafts 64, 64 in the vertical direction (Z direction) are the same. However, it is not limited to this. Further, both of the feeding rotating shafts 64 and 64 can be supported by being inserted into the central paper tube p of the material coil 4C. Therefore, in the state where the insertion is supported, the feeding rotary shaft 64 is driven to rotate, thereby feeding the material 4 from the material coil 4C along the Y direction in plan view.

  Further, the two feeding rotary shafts 64 and 64 basically perform this feeding operation alternately. That is, while the one feeding rotary shaft 64 feeds the material 4a from the material coil 4Ca, the other feeding rotary shaft 64 is in a standby state that is a non-feeding state. When the material 4a of one of the feeding rotating shafts 64 is almost gone, the material of the uncooked material coil 4Cf attached to the other feeding rotating shaft 64 while using the material 4a as the preceding material 4a. These materials 4a and 4f are joined by using 4f as the subsequent material 4f. Therefore, thereafter, the other feeding rotary shaft 64 feeds and supplies the material 4f from the succeeding material coil 4Cf. Further, when the material 4f of the other feeding rotary shaft 64 is almost gone, this time, the unpaid material newly attached to the one feeding rotary shaft 64 while using the material 4f as a preceding material. The same processing as described above is repeated with the material coil 4Cn in the state as the subsequent material coil.

  The joining mechanism 66 is a mechanism 66 that joins the material 4f of the succeeding material coil 4Cf that is supported by the other feeding rotary shaft 64 to the preceding material 4a fed by the one feeding rotary shaft 64. is there. Thus, the material 4 (4a, 4f) is continuously supplied to the processing apparatus 110 without interruption.

  As shown in FIG. 7A, the joining mechanism 66 includes a pressing mechanism 67 and a cutter mechanism 68. The pressing mechanism 67 includes a pair of pressing members 67K and 67K guided by a reciprocating movement in a predetermined direction (for example, the Y direction) in which the size of the gap G between them can be changed, and a pair of pressing members 67K in the predetermined direction. , 67K, and actuators 67C, 67C such as air cylinders that reciprocate. The cutter mechanism 68 includes a cutter blade 68B that cuts the preceding material 4a and separates the material 4a from the paper tube p, and an actuator 68C such as an air cylinder that moves the cutter blade 68B forward and backward relative to the preceding material 4a. Have.

  Then, the joining process is performed as follows. First, the operator pulls the distal end portion 4fe of the material 4f from the subsequent material coil 4Cf supported by the feeding rotation shaft 64 in the rotation stopped state, and pushes the distal end portion 4fe into the pressing mechanism 67 as shown in FIG. 7A. The pair of pressing members 67K and 67K are positioned in the gap G. For example, the tip portion 4fe is brought into contact with and supported by the pressing member 67K by suction of the pressing member 67K located on the material 4f side of the succeeding member of the pair of pressing members 67K and 67K. At this time, the tip 4fe is already provided with a double-sided tape 7j for joining with the preceding material 4a.

  Further, in the gap G, a transport path for the preceding material 4a fed out from the preceding material coil 4Ca is located, and the preceding material 4a is transported along the same path. When the controller determines that the remaining amount of the material 4a of the preceding material coil 4Ca has become equal to or less than the specified value, the controller stops the rotation of the feeding rotary shaft 64 that supports the preceding material coil 4Ca, and this During the stop, as shown in FIG. 7B, the controller brings the pair of pressing members 67K and 67K closer to each other, whereby the preceding material 4a, the double-sided tape 7j and the following material are moved by the pair of pressing members 67K and 67K. Clamp the three with 4f. As a result, the preceding material 4a and the succeeding material 4f are joined via the double-sided tape 7j. Then, as shown in FIG. 7B, the controller controls the cutter mechanism 68 to move the preceding material 4a with the cutter blade 68B between the pair of pressing members 67K, 67K and the feeding rotary shaft 64. Thus, the material 4a is separated from the paper tube p of the feeding rotary shaft 64. Further, as shown in FIG. 7C, the controller separates the pair of pressing members 67K and 67K from each other, thereby releasing the clamped state of the three parties 4a, 7j, and 4f. If it does so, a controller will start rotation of the rotating shaft 64 for feeding which supports the material coil 4Cf of a succeeding. Then, the feeding of the material 4 is switched from the preceding material coil 4Ca to the succeeding material coil 4Cf.

  Note that the paper tube p of the preceding material coil 4Ca that has been fed out shown in FIG. 8 is removed from the feeding rotary shaft 64 by the operator. And until the next joining process, an operator inserts and attaches the new material coil 4Cn of the undrawn state to the rotating shaft 64 for same feeding. The new material coil 4Cn becomes the subsequent material coil 4Cf in the next joining process.

(2) Storage device 90
As shown in FIG. 6, the storage device 90 stores the material 4 (4a, 4f) fed from the feeding rotary shafts 64, 64 in the form of a loop 4L so as to be supplied downstream in the transport direction. The accumulator 90 reciprocates in a predetermined direction (Z direction) in which the size of the material loop 4L can be changed, and a fixed position roll group G95s composed of a plurality of fixed position rolls 95s, 95s. A movable roll group G95m composed of a plurality of movable rolls 95m, 95m, and the like, and an actuator 95C such as an air cylinder that applies a predetermined load (N) in the direction of increasing the loop 4L to the movable roll group G95m; ,have. Each of the rolls 95s and 95m is supported so as to be rotatable around a rotation axis along the X direction. Further, the material 4 is alternately wound around the fixed position rolls 95s belonging to the fixed position roll group G95s and the movable rolls 95m belonging to the movable roll group G95m, whereby the loops 4L, 4L,. A plurality of are formed. Further, as described above, a predetermined load (N) is applied to the moving roll group G95m from the actuator 95C in the direction of increasing the loop 4L. Therefore, when the tension (N) of the material 4 is smaller than a predetermined value based on the predetermined load, the moving roll group G95m moves so that the loop 4L becomes large, but the tension (N) of the material 4 is the predetermined value. When larger than the value, the moving roll group G95m moves so that the loop 4L becomes smaller.

  According to the storage device 90 having such a configuration, the material 4 is also sent from the material splicing device 60 located upstream of the preceding material 4a during the joining process of joining the succeeding material 4f. Even if not, the storage device 90 pays out the material 4 previously stored in the form of the loop 4L to the processing device 110, so that the processing device 110 stops or decelerates the conveyance of the material 4 The material 4 can be processed without having to do.

  That is, when the feeding operation is switched from one feeding rotation shaft 64 to the other feeding rotation shaft 64 as described above, the feeding speed value (mpm) of the preceding material 4a by the one feeding rotation shaft 64. Gradually decreases, and the rotation of the feeding rotating shaft 64 stops. In this case, the preceding material 4a is not fed out from the one feeding rotary shaft 64. However, in spite of this, the material 4a is sent to the downstream processing apparatus 110. For this reason, when the advance of the preceding material 4a shifts to the stop as described above, the tension of the preceding material 4a increases in the form of being pulled downstream in the transport direction. Then, when the tension becomes larger than the predetermined value, the moving roll group G95m moves in the direction in which the loop 4L becomes smaller based on the above, and as a result, the accumulating device 90 stores the accumulated material 4 (4a) is supplied to the processing apparatus 110.

  The supply operation of the material 4 (4a) from the storage device 90 is continued at least until the above-described joining process is completed. However, as shown in FIG. When the subsequent rotation of the material coil 4Cf is enabled by the feeding rotary shaft 64, the controller sets the feeding speed value of the feeding rotating shaft 64 to the supply speed value V4 (required from the processing apparatus 110 side). The rotational speed (rpm) of the feeding rotary shaft 64 is accelerated to a command rotational speed (rpm) that becomes a command value of mpm). When the controller determines that the rotational speed has reached the command rotational speed (rpm), the controller controls the rotation of the feeding rotary shaft 64 based on the command rotational speed.

  Further, the controller accumulates the subsequent material 4f fed from the feeding rotating shaft 64 in the accumulating device 90 by enlarging the loop 4L of the accumulating device 90 so as to be in time for at least the next joining process. For example, the controller makes the feeding speed value (mpm) of the feeding rotating shaft 64 larger than the command value of the supply speed value V4 (mpm) requested from the processing apparatus 110 side. Then, the tension of the material 4 becomes smaller than the predetermined value, and as a result, the loop 4L becomes larger from the solid line state in FIG. 8 to the two-dot chain line state. When the controller determines that the size of the loop 4L has reached the specified value, the controller determines that the loop 4L is based on the command rotational speed (rpm) corresponding to the command value of the supply speed value V4 (mpm). The rotation of the feeding rotary shaft 64 is controlled.

<<<< Association of First Type and Second Type Material Supply Apparatus 10, 50 >>>>
By the way, in this embodiment, while using the 1st type material supply apparatus 10 of FIG. 4A for supply of the material 3 of the back sheet 3s as mentioned above, on the other hand, with respect to supply of the material 4 of the leak-proof sheet 4s. 6 used the second type material supply device 50 of FIG. 6 because the number of attachments per unit time of the material coil 3C of the backsheet 3s to the two feeding rotary shafts 64 and 64 (times / h) and the number of times the material coil 4C is attached to the two feeding rotary shafts 24, 24 per unit time (times / h), the former is more than the latter. Because.
That is, in the second type material splicing device 60, the work of pulling out the material 4f to the pressing member 67K as shown in FIG. 7A is necessary, and the preparation work for joining is more complicated than that of the first type material splicing device 20. . Therefore, the second type material splicing device 60 is in charge of the material coil 4C of the leak-proof sheet 4s with a small number of attachments, thereby suppressing an increase in the work load of the operator.

  Incidentally, in this example, the number of times of attaching the material coil 4C of the leak-proof sheet 4s (times / h) is less than the number of times of attaching the material coil 3C of the back sheet 3s (times / h). The two points contribute.

First, in this example, in this example, the feeding length LGH4 of the material 4 of the leak-proof sheet 4s fed out by the second type material splicing device 20 for the production of one diaper 1s is one diaper. It is shorter than the feeding length LGH3 of the material 3 of the back sheet 3s fed out by the first type material splicing device 60 for the generation of 1s.
That is, as shown in FIG. 2A, in this example, the longitudinal direction of the diaper 1s is along the feeding direction of the materials 3 and 4, but here, when comparing the longitudinal length of the diaper 1s, The length LGH4 of the leak-proof sheet 4s is shorter than the length LGH3 of the back sheet 3s.
As a result, the consumption lengths LGH3 and LGH4 of the materials 3 and 4 consumed from the material coils 3C and 4C per unit time are smaller in the material 4 of the leak-proof sheet 4s than in the material 3 of the back sheet 3s. First, this contributes to a reduction in the number of attachments (times / h) of the material coil 4C of the leak-proof sheet 4s.
Incidentally, the realization of making the feeding length LGH4 of the material 4 of the leak-proof sheet 4s as described above shorter than the feeding length LGH3 of the material 3 of the backsheet 3s is, for example, from the processing device 110 side of the first type. Ratio V3 between the supply speed value V3 (mpm) of the material 3 required for the material supply apparatus 10 and the supply speed value V4 (mpm) of the material 4 required for the second-type material supply apparatus 50 from the processing apparatus 110 side. : V4 is maintained by maintaining the above-mentioned feeding length ratio LGH3: LGH4.

  Next, as the second point, in this example, as shown in FIG. 2B, since the leak-proof sheet 4s is a film and the back sheet 3s is a non-woven fabric, the thickness of the material 4 of the leak-proof sheet 4s. When the thickness (average thickness) and the thickness (average thickness) of the material 3 of the back sheet 3s are compared in the state of the material coils 4C and 3C, the thickness of the material 3 of the former leak-proof sheet 4s However, it is smaller than the thickness of the material 3 of the latter backsheet 3s. On the other hand, in general, the outer diameter of the material coils 4C, 3C has an allowable upper limit from the viewpoint of loading and transporting with a truck or the like. In such a case, the smaller thickness is taken up to the same outer diameter. The winding length of becomes longer. Therefore, the small thickness of the material 4 of the leak-proof sheet 4s as described above also contributes to a reduction in the number of attachments (times / h).

  However, the requirements for making a difference in the number of attachments between the materials 3 and 4 are not limited to the above. That is, there may be a difference in the number of attachments (times / h) due to other requirements.

  Moreover, in this embodiment, as shown to FIG. 3A, although the absorber 1k was produced | generated by shape | molding a pulp fiber with the fiber pile apparatus 110a, it is not restricted to this at all. For example, the cutter 1 (not shown) may cut and produce the absorbent body 1k from a so-called pulp air laid nonwoven fabric (nonwoven fabric mainly composed of pulp fibers). However, in that case, the material of the pulp air laid nonwoven fabric is also brought into the production line LM in the form of a material coil. In this case, since the thickness of the pulp air laid nonwoven fabric is generally large, the consumption time of the material coil is shortened, and therefore the number of times of attachment of the material coil per unit time (times / h) is increased. Therefore, it is desirable to use the first type material supply device 10 for the material coil of the pulp air laid nonwoven fabric. In this case, the thickness (average thickness) of the pulp air-laid nonwoven fabric in the state of the material coil is usually set to the materials 2 and 3 of the top sheet 2s and the back sheet 3s in the state of the material coils 2C and 3C. It becomes thicker than the thickness (average thickness). Therefore, the number of times (times / h) of attaching the material coil 2C of the top sheet 2s and the material coil 3C of the back sheet 3s is less than the number of times (times / h) of attaching the material coil of the pulp air laid nonwoven fabric. Alternatively, the second-type material supply device 50 may be used for the material coils 2C and 3C of the top sheet 2s and the back sheet 3s.

By the way, in this embodiment, as shown in FIG. 3B, each processing apparatus 110a, 110b... Of the production line LM is supported by an end plate LMK (corresponding to a support member) of the production line LM. Here, the end plate LMK is a metal plate member such as iron standing on the floor LMB of the production line LM so as to support the processing apparatuses 110a, 110b. That is, the end plate LMK extends in the vertical direction (Z direction) and the X direction, and the end plate LMK has a substantially vertical front side surface LMKS1 on one side in the Y direction and is substantially vertical on the other side. A rear side LMKS2 is provided. And each processing apparatus 110a, 110b ... is supported by the front side surface LMKS1 in the cantilever support state, for example.
On the other hand, the first-type and second-type material splicing devices 20 and 60 are arranged at positions on the front side of the front side surface LMKS1 of the end plate LMK in the Y direction. For the material splicing devices 20 and 60, the dedicated support members 21 and 61 (first support members) described above that are erected on the floor LMB of the production line LM separately from the end plate LMK. 4A, FIG. 4B, and FIG. 6) are arranged along the Y direction, so that the two feeding rotary shafts 24, 24, 64, Reference numerals 64 are respectively supported by the support members 21 and 61 (corresponding to the first support member).
Therefore, each material splicing device 20, 60 can be easily arranged at a position shifted in the Y direction from the arrangement position of the processing devices 110a, 110b, and as a result, the X direction of the manufacturing line LM as described above. It is possible to easily make the overall length of the compact.

  As described above with reference to FIGS. 4A and 4B, in this example, the first type material splicing device 20 that feeds out the material 3 of the back sheet 3 s is arranged in the preceding material coil position P3Ca in the turning direction of the turret 22. 4B, here, referring to FIG. 4B, the preceding material coil position P3Ca is a cutting device 110b which is the processing device 110b with respect to the Y direction with respect to the succeeding material coil position P3Cf. It is far from. When the feeding rotary shaft 24 is positioned at the preceding material coil position P3Ca, the operator attaches a new material coil 3Cn that has not been fed to the feeding rotary shaft 24. Therefore, the attachment work can be performed at a safe position away from the processing apparatus 110b.

Further, FIG. 9 shows a schematic enlarged view of the IX portion in FIG. 3B. In this example, one and the other rotations of the second type material splicing device 60 for feeding out the material 4 of the leak-proof sheet 4s. When the shafts 64 and 64 and the turning axis C22 of the turret 22 of the first type material splicing device 20 are compared with respect to the position in the Y direction, the position of the swiveling axis C22 is the second type material splicing device 60. Is located in a range R64 between the one feeding rotation shaft 64 and the other feeding rotation shaft 64.
Therefore, the amount of protrusion in the Y direction from the second type material splicing device 60 of the first type material splicing device 20 can be suppressed, and as a result, the size of the production line LM can be reduced in the Y direction. . Thus, the flow line of the worker can be shortened in the Y direction, and the work load can be reduced.

In the example of FIG. 9, of the two feeding rotary shafts 64, 64 related to the second type material splicing device 60, the feeding rotary shaft 64 far from the cutting device 110 b as the processing device 110 b has not been fed out. When the material coil 4Cn in the state is supported, the feeding rotary shaft 24 located at the preceding material coil position P3Ca of the first type material splicing device 20 in the range R4Cn in the Y direction where the material coil 4Cn exists. It is included. Then, as described above, at the preceding material coil position P3Ca, the work of attaching the material coil 3Cn that has not been fed to the feeding rotary shaft 24 is performed as described above.
Therefore, the operator moves the movement between the position of the feeding rotary shaft 64 of the second type material splicing device 60 and the preceding material coil position P3Ca of the first type material splicing device 20 with a relatively short movement. As a result, the new material coil 3Cn can be attached to the feeding rotary shaft 24 at the preceding material coil position P3Ca and the above-described feeding rotation of the second type material splicing device 60 can be performed. The attachment work of the new material coil 4Cn to the shaft 64 can be performed efficiently.
Incidentally, from the viewpoint of shortening the flow line, it is more preferable that the first type of R-type range R64a in the Y direction in which the far-away feeding rotary shaft 64 of the second type material splicing device 60 exists is included. It is preferable that at least a part of the feeding rotary shaft 24 located at the preceding material coil position PCa of the material splicing device 20 is accommodated.

  Further, the schematic side view of FIG. 10 shows the vertical positional relationship between the first type material splicing device 20 and the second type material splicing device 60. In this example, the first type material splicing device 20 is shown. When the feeding rotary shaft 24 is positioned at the preceding material coil position P3Ca, the feeding rotary shaft 24 is connected to one feeding rotary shaft 64 and the other feeding shaft of the second type material splicing device 60 in the vertical direction. It is located above the rotating shaft 64.

  Therefore, it is easy to visually check the state of the feeding rotary shaft 24 with a large number of attachments of the material coil 3C even from a distance, thereby forgetting to attach a new material coil 3Cn to the feeding rotary shaft 24. If this is the case, it can be discovered quickly.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof. For example, the following modifications are possible.

  In the above-described embodiment, the so-called unfolded disposable diaper 1s is illustrated as an example of the absorbent article, but the present invention is not limited thereto. For example, a pants-type disposable diaper may be used. Moreover, as a pants-type disposable diaper, a liquid-absorbent absorbent main body (a sheet-like member having an absorbent body 1k therein) is stretched between the ventral belt member and the back belt member in the unfolded state. A so-called three-piece type diaper may be used, or a so-called two-piece type diaper in which an absorbent main body is placed on the skin side surface of an approximately hourglass-shaped exterior sheet in the unfolded state. Furthermore, the absorbent article is not limited to the disposable diaper 1 described above, but may be any article that absorbs the excretion fluid of the wearer. For example, the absorbent article may be a sanitary napkin or a urine picking pad.

  In the above-described embodiment, as shown in FIG. 3B, the production line LM has two first-type material supply devices 10 and 10 and one second-type material supply device 50. The number of each is not limited to this. That is, one or three or more first-type material supply devices 10 may be provided, and two or more second-type material supply devices 50 may be provided.

  In the above-described embodiment, as shown in FIGS. 4A and 6, the first type material splicing device 20 and the second type material splicing device 60 follow the preceding materials 3a and 4a with the double-sided tape 7j, respectively. However, the present invention is not limited to this. For example, they may be joined by welding such as heat sealing or ultrasonic sealing, or may be joined by a joining method other than these.

  In the above-described embodiment, as shown in FIG. 4A, the press mechanism 26 of the first type material splicing device 20 has the press roll 26R. However, the present invention is not limited to this. For example, instead of the press roll 26R, a configuration having a pair of rolls and an endless belt wound around the pair of rolls may be used. In this case, the preceding material 3a is pressed against the material 3f on the outer peripheral surface 3Cfs of the succeeding material coil 3Cf on the outer peripheral surface of the endless belt based on the driving of the actuator 26C. The pair of rolls may both be driven rolls, or at least one of the rolls may be a drive roll.

  In the above-described embodiment, the material coil 2C of the top sheet 2s and the material coil 3C of the back sheet 3s are illustrated as the first material coil, and the material coil 4C of the leak-proof sheet 4s is illustrated as the second material coil. Not limited to this. That is, as the first and second material coils, other material coils may be carried into the production line LM and used for the production of the disposable diaper 1s. For example, a material of a three-dimensional gather sheet for forming a so-called three-dimensional gather may be carried into the production line LM in the form of a material coil, or a material for forming an illustration sheet having a pattern may be used in the form of a material coil. May be carried into the production line LM. Note that whether these material coils correspond to the first material coil or the second material coil is related to the size of consumption time with other material coils, that is, the number of times of attachment to the feeding rotating shaft. Determined based on the size relationship.

  In the above-described embodiment, as illustrated in FIG. 4A, the first type material splicing device 20 includes the storage device 40, but the present invention is not limited thereto. That is, in the first type, the storage device 40 is not an essential configuration, that is, the device 40 may not be included.

In the above-described embodiment, as shown in FIG. 6, the two feeding rotary shafts 64 and 64 of the second material splicing device 60 are arranged side by side in the Y direction, but this is not a limitation. For example, as shown in the schematic side view of FIG. 11A, the two feeding rotary shafts 64 and 64 may be arranged in a fixed position side by side in the vertical direction.
In this case, it is desirable that the planar arrangement of the two feeding rotary shafts 64 and 64 be in the following positional relationship with respect to the first type material splicing device 20. FIG. 11B is a schematic plan view showing this preferable positional relationship, and corresponds to the IX portion in FIG. 3B. That is, as shown in FIG. 11B, the turret 22 is at least around the turning axis C22 in a state in which the unrolled material coil 3Cn is supported by one first rotating shaft 24 of the first type material splicing device 60. The two second rotating shafts 64 and 64 of the second type material splicing device 60 are included in the range R3Cn in the Y direction of the turning trajectory drawn by the material coil 3Cn when turning only one rotation. desirable.
And if it becomes like this, the protrusion amount of the Y direction from the 1st type material splicing apparatus 20 of the 2nd type material splicing apparatus 60 can be suppressed, Thereby, this manufacturing line LM The size can be reduced in the Y direction. As a result, the flow line of the worker can be shortened, and the work load can be reduced.
Incidentally, in the examples of FIGS. 11A and 11B, the positions in the Y direction of the two feeding rotary shafts 64 and 64 are completely coincident with each other, but the present invention is not limited to this. That is, the positions of the two feeding rotary shafts 64 and 64 may be shifted from each other in the Y direction.

1 base material, 1s disposable diaper (absorbent article), 1k absorber,
2 Material, 2C Material Coil, 2Ca Material Coil, 2Cf Material Coil,
2a material, 2f material, 2s top sheet,
3 material (first material), 3C material coil (first material coil),
3Ca preceding material coil (first material coil preceding),
3Cf Subsequent material coil (following first material coil),
3Cfs outer peripheral surface, 3Cn material coil, 3Cns outer peripheral surface,
3L loop,
3a Leading material (leading first material), 3f Subsequent material (following first material),
3fe tip,
3n material, 3ne tip,
3s backsheet,
4 material (second material), 4C material coil (second material coil),
4Ca preceding material coil (second material coil preceding),
4Cf Subsequent material coil (second material coil following),
4Cn material coil,
4L loop,
4a preceding material (preceding second material), 4f following material (following second material),
4fe tip,
4s leak-proof sheet,
7j double-sided tape, 7k double-sided tape,
10 Material supply device of the first type,
20 First type material splicing device (first material splicing device),
21 support member (first support member), 22 turret,
24 Rotating shaft for feeding (first rotating shaft),
26 press mechanism, 26A arm member, 26R press roll,
26C actuator,
28 cutter mechanism, 28A arm member, 28B cutter blade,
28C actuator,
40 storage device, 41A arm member, 41C actuator,
41u fixed position roll, 41m moving roll, 41d fixed position roll,
50 Second type material supply device,
60 Second type material splicing device (second material splicing device),
61 support members,
64 Rotating shaft for feeding (second rotating shaft),
66 Joining mechanism,
67 pressing mechanism, 67K pressing member, 67C actuator,
68 Cutter mechanism, 68B Cutter blade, 68C Actuator,
90 storage device, 95s fixed position roll, 95m moving roll,
95C actuator,
110 Processing device (generation device),
110a Fiber stacking device (processing device),
110b cutting device (first processing device, second processing device, processing device),
110c Press device (first processing device, second processing device, processing device),
110d leg hole device (first processing device, processing device),
110e end cut device (first processing device, processing device),
LM production line, LMB floor,
LMK end plate (support member), LMKS1 front side, LMKS2 back side,
TB turn bar (conveyance direction changing member),
G95s fixed position roll group, G95m moving roll group,
G gap, p paper tube,
P3Ca preceding material coil position, P3Cf following material coil position,
Pj joining position, Pw26R standby position, Pw28B standby position,
C22 rotation axis, C26A rotation axis, C26R rotation axis, C28A rotation axis,
C41A rotation axis, C41u rotation axis, C41d rotation axis,

Claims (10)

A method of manufacturing an absorbent article using a first material and a second material,
The first material splicing device joins the first material of the succeeding first material coil to the first material of the succeeding material as the first material of the succeeding material to the preceding first material that is continuously drawn out from the preceding first material coil. Supplying the succeeding first material continuously to the preceding first material;
The second material splicing device joins the second material of the subsequent second material coil as the second material of the subsequent material to the second material of the subsequent material that is continuously drawn out from the preceding second material coil. Supplying the subsequent second material in succession to the preceding second material;
Generating the absorbent article based on the first material supplied from the first material splicing device and the second material supplied from the second material splicing device,
The first material splicing device supports the preceding first material fed out from the preceding first material coil supported by one of the first rotating shafts that is driven to rotate, and the following first material coil. The first material of the succeeding first material is joined to the first material of the preceding by pressing toward the outer peripheral surface of the first material coil of the succeeding first rotating by the driving rotation operation of the other first rotating shaft,
The second material splicing device performs a feeding operation of one second rotating shaft that supports the preceding second material coil and a feeding operation of the other second rotating shaft that supports the succeeding second material coil. In a state where both are stopped, by joining the preceding second material and the succeeding second material, the succeeding second material is joined to the preceding second material,
The number of attachments per unit time of the first material coil to the one first rotating shaft and the other first rotating shaft related to the first material splicing device is the one of the one related to the second material splicing device. The manufacturing method of an absorbent article, wherein the number of attachments per unit time of the second material coil to the second rotating shaft and the other second rotating shaft is greater. It is a manufacturing method of the absorptive article according to claim 1,
The feeding length of the second material fed out by the second material splicing device for the production of one absorbent article is fed out by the first material splicing device for the production of one absorbent article. The manufacturing method of the absorbent article characterized by being shorter than the delivery length of said 1st material. It is a manufacturing method of the absorptive article according to claim 1 or 2,
A first processing device that processes the first material conveyed from the first material splicing device;
The manufacturing method of an absorbent article, wherein the first support member that supports the first rotating shaft of the first material splicing device is a member that is different from the support member that supports the first processing device. A method for producing an absorbent article according to any one of claims 1 to 3,
A first processing device that processes the first material conveyed from the first material splicing device;
In the first material splicing device, the first material is fed out in a plan view with a first direction as a feeding direction, and in the first processing device, the first material is conveyed in a second direction intersecting the first direction in a plan view. Conveyed as direction,
A conveyance direction changing member is provided between the first material splicing device and the first processing device to change the conveyance direction of the first material in plan view from the first direction to the second direction. And
The first material splicing device has a turret capable of turning about a turning axis parallel to the first rotation axis, and the turret has the one first rotation axis at a position symmetrical with respect to the turning axis. The other first rotating shaft is rotatably supported;
The one first rotating shaft and the other first rotating shaft are movable at two positions set in the turning direction of the turret by the turning operation of the turret,
A second processing device that processes the second material conveyed from the second material splicing device;
In the second material splicing device, the second material is fed with the first direction as the feeding direction in a plan view, and in the second processing device, the second direction is conveyed with the second direction as a feeding direction in a plan view,
A conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction. And
The one second rotating shaft and the other second rotating shaft of the second material splicing device are arranged in a fixed position side by side in the first direction,
The absorptivity characterized in that the turning shaft of the turret of the first material splicing device is located between the one second rotating shaft and the other second rotating shaft with respect to the first direction. Article manufacturing method. A method for producing an absorbent article according to any one of claims 1 to 3,
A first processing device that processes the first material conveyed from the first material splicing device;
In the first material splicing device, the first material is fed out in a plan view with a first direction as a feeding direction, and in the first processing device, the first material is conveyed in a second direction intersecting the first direction in a plan view. Conveyed as direction,
A conveyance direction changing member is provided between the first material splicing device and the first processing device to change the conveyance direction of the first material in plan view from the first direction to the second direction. And
The first material splicing device has a turret capable of turning about a turning axis parallel to the first rotation axis, and the turret has the one first rotation axis at a position symmetrical with respect to the turning axis. The other first rotating shaft is rotatably supported;
The one first rotating shaft and the other first rotating shaft are movable at two positions set in the turning direction of the turret by the turning operation of the turret,
One of the two positions is farther from the first processing device in the first direction than the other position.
A manufacturing method of an absorbent article, wherein a new first material coil is attached to the one first rotating shaft when the one first rotating shaft is located at the one position. It is a manufacturing method of the absorptive article according to claim 5,
A second processing device that processes the second material conveyed from the second material splicing device;
In the second material splicing device, the second material is fed with the first direction as the feeding direction in a plan view, and in the second processing device, the second direction is conveyed with the second direction as a feeding direction in a plan view,
A conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction. And
The one second rotation shaft and the other second rotation shaft of the second material splicing device are arranged in a fixed position side by side in the first direction, and the one second rotation shaft Is farther from the second processing device in the first direction than the other second rotation axis,
When the second material coil that has not been fed out is supported on the one second rotating shaft, the one of the first material splicing devices is within a range of the first direction in which the second material coil exists. The manufacturing method of the absorbent article characterized by including the said 1st rotating shaft located in this position. It is a manufacturing method of the absorptive article according to claim 5 or 6,
A second processing device that processes the second material conveyed from the second material splicing device;
In the second material splicing device, the second material is fed with the first direction as the feeding direction in a plan view, and in the second processing device, the second direction is conveyed with the second direction as a feeding direction in a plan view,
A conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction. And
The one second rotating shaft and the other second rotating shaft of the second material splicing device are arranged in a fixed position side by side in the first direction,
When the one first rotating shaft is located at the one position of the first material splicing device, the first rotating shaft is connected to the one second rotating shaft of the second material splicing device in the vertical direction and A method for producing an absorbent article, wherein the absorbent article is positioned above the other second rotation shaft. A method for producing an absorbent article according to any one of claims 1 to 3,
A first processing device that processes the first material conveyed from the first material splicing device;
In the first material splicing device, the first material is fed out in a plan view with a first direction as a feeding direction, and in the first processing device, the first material is conveyed in a second direction intersecting the first direction in a plan view. Conveyed as direction,
A conveyance direction changing member is provided between the first material splicing device and the first processing device to change the conveyance direction of the first material in plan view from the first direction to the second direction. And
The first material splicing device has a turret capable of turning about a turning axis parallel to the first rotation axis, and the turret has the one first rotation axis at a position symmetrical with respect to the turning axis. The other first rotating shaft is rotatably supported;
The one first rotating shaft and the other first rotating shaft are movable at two positions set in the turning direction of the turret by the turning operation of the turret,
A second processing device that processes the second material conveyed from the second material splicing device;
In the second material splicing device, the second material is fed with the first direction as the feeding direction in a plan view, and in the second processing device, the second direction is conveyed with the second direction as a feeding direction in a plan view,
A conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction. And
The one second rotating shaft and the other second rotating shaft of the second material splicing device are respectively disposed at fixed positions in the first direction,
The first direction of the turning trajectory drawn by the first material coil when the turret turns around the turning axis in a state in which the first material coil that has not been fed out is supported by the one first rotating shaft. The manufacturing method of an absorbent article characterized in that the one second rotation shaft and the other second rotation shaft of the second material splicing device are included in the range. A method for manufacturing an absorbent article according to any one of claims 1 to 8,
The first material is a pulp air laid nonwoven fabric,
A method for producing an absorbent article, comprising cutting and producing an absorbent body related to the absorbent article from the pulp air-laid nonwoven fabric. An apparatus for manufacturing an absorbent article using a first material and a second material,
By joining the first material of the succeeding first material coil as the first material of the succeeding first material that is continuously fed out from the first material coil, it is made continuous with the preceding first material. A first material splicing device for supplying the following first material;
By joining the second material of the succeeding second material coil as the second material of the succeeding second material that is continuously drawn out from the second material coil, the second material of the succeeding material is continuously connected to the preceding second material. A second material splicing device for supplying the second material following the
A generator that generates the absorbent article based on the first material supplied from the first material splicing device and the second material supplied from the second material splicing device;
The first material splicing device supports the preceding first material fed out from the preceding first material coil supported by one of the first rotating shafts that is driven to rotate, and the following first material coil. By pressing against the outer peripheral surface of the subsequent first material coil that is rotated by the drive rotation operation of the other first rotating shaft, the subsequent material is joined to the preceding material,
The second material splicing device performs a feeding operation of one second rotating shaft that supports the preceding second material coil and a feeding operation of the other second rotating shaft that supports the succeeding second material coil. In a state where both are stopped, by joining the preceding second material and the succeeding second material, the succeeding second material is joined to the preceding second material,
The number of attachments per unit time of the first material coil to the one first rotating shaft and the other first rotating shaft related to the first material splicing device is the one of the one related to the second material splicing device. The absorbent article manufacturing apparatus characterized in that the number of attachments per unit time of the second material coil to the second rotating shaft and the other second rotating shaft is greater.

Images