JP6003679B2 - Web transport device capable of simultaneously feeding webs from multiple webs - Google Patents

Description

  The present invention relates to a web conveyance device.

  With reference to FIG. 5, a gravure printing machine including a conventional web conveyance device will be described. FIG. 5 is a schematic diagram showing an example of the configuration of a conventional gravure printing machine. As shown in FIG. 5, the gravure printing machine includes a feeding unit 502, an infeed unit 503, a printing unit 504, an outfeed unit 505, and a winding unit 506. A roll-shaped original fabric 500 is set on the feeding shaft of the feeding unit 502. As the feed shaft is driven, a web (printing object such as paper, plastic film, metal foil, etc.) 501 is fed to the in-feed unit 503 from the roll-shaped raw material. The web 501 to be fed is fed to the printing unit 504 via the infeed unit 503, and printing processing is performed in the printing unit 504. Thereafter, the sheet is discharged via the outfeed unit 505 and is wound by the winding unit 506.

  FIG. 6 is a schematic diagram for explaining the feeding mechanism unit of a conventional printing machine in more detail. 6 feeds and feeds a feed shaft 510 on which a roll-shaped original fabric 500 is set and a web 501 fed from the roll-shaped original fabric 500 by the feed shaft 510. A nip roller 511. The nip roller 511 includes a driving roller 512 that is rotationally driven, and a rubber roller 513 that is disposed to face the driving roller 512 and presses the web 501 with the driving roller 512. After the roll-shaped original fabric 500 is set on the feeding shaft 510, the web 501 is fed from the roll-shaped original fabric 500 by the rotation of the feeding shaft 510. The web 501 to be fed is conveyed while being held between the driving roller 512 and the rubber roller 513. Here, the tension of the web 501 to be fed is controlled by adjusting the rotation speed of the feed shaft 510 and the rotation speed of the drive roller 512.

  Furthermore, with reference to FIG. 7, the relationship between the tension | tensile_strength of a web and the diameter of a roll-shaped original fabric is demonstrated. FIG. 7 is a schematic view for explaining the relationship between the roll-shaped raw fabric diameter and the web tension. As shown in FIG. 7, in a feeding mechanism portion of a conventional printing apparatus, a roll-shaped raw fabric having a relatively large diameter ra and a roll-shaped original having a relatively small diameter rb. Consider the case where both are set on the same feed shaft 510. In this case, the web 501a (corresponding to the diameter ra) and the web 501b (corresponding to the diameter rb) fed from each original fabric by the rotation of the feeding shaft 510 are held in common by the drive roller 512 and the rubber roller 513. While being transported. Here, since the angular velocity ω of each original fabric and the angular velocity ω of the feeding shaft 510 are naturally the same, the feeding velocity Va of the web 501a fed from the raw fabric having a large diameter ra has a smaller diameter rb. It becomes faster than the feeding speed Vb of the web 501b fed from the original fabric. Therefore, the web 501a is slackened and tension is not applied, and the web 501a cannot be fed properly, or the web 501b is excessively tensioned and the web 501b is broken.

  On the other hand, a wide roll-shaped raw material is set on the feed shaft, the web is divided using a slitter device or the like in the processing step, and the plurality of divided webs are simultaneously wound in parallel. Such a web conveyance device is known (Patent Document 1). However, there is no known web conveyance device that can set a plurality of roll-shaped original fabrics.

Japanese Patent No. 2888704

  The present invention has been devised to pay attention to the above problems and to effectively solve them. The objective of this invention is providing the web conveyance apparatus which can set several roll-shaped original fabric.

  The present invention provides a first feed shaft on which a roll-shaped first original fabric is set, a second feed shaft having a hollow space on which a roll-shaped second original fabric is set, and the second feed A third feed shaft having a hollow space, which is disposed on the opposite side of the first feed shaft with respect to the shaft, and in which a roll-shaped third original fabric is set, and the third feed shaft with respect to the third feed shaft A first differential device disposed on the opposite side of the second feed shaft, a second differential device disposed on the opposite side of the third feed shaft with respect to the first differential device, and the roll A nip roller for commonly nipping and conveying webs fed respectively from the roll-shaped first original fabric, the roll-shaped second original fabric, and the roll-shaped third original fabric, The feed shaft, the second feed shaft, and the third feed shaft are arranged coaxially, and on the third feed shaft side of the two side gears of the first differential device. The side gear has a hollow space and is connected to the third feed shaft, and the side gear on the second differential side of the two side gears of the first differential is hollow. The second feed shaft extends through the hollow space of the third feed shaft and the hollow space of the side gear on the third feed shaft side of the first differential. , Connected to the side gear on the second differential device side of the first differential device, and the side gear on the first differential device side out of the two side gears of the second differential device has a hollow space. And is connected to a pinion shaft that pivotally supports a pair of pinion gears of the first differential device, wherein the first feed shaft is a hollow space of the second feed shaft, the third feed shaft In the hollow space of the feed shaft, on the third feed shaft side of the first differential Side gear hollow space, side gear hollow space on the second differential device side of the first differential device, and side gear hollow space on the first differential device side of the second differential device. A pinion shaft that extends through and is connected to the other side gear of the second differential device, and that respectively supports a pair of pinion gears of the second differential device is connected to a drive shaft, and the pinion shaft Is a web transport device characterized in that it is revolved by the rotation of the drive shaft.

  According to the present invention, it is possible to allow a difference in angular velocity between the respective feed shafts (the first feed shaft, the second feed shaft, and the third feed shaft) on which the three roll-shaped raw materials are set. Even when there is a difference in the diameters of the three roll-shaped raw materials, the tension of each web can be suitably controlled. For this reason, the web conveyance apparatus which can be fed simultaneously from three roll-shaped original fabrics and can endure practical use is realizable.

  Preferably, the other side gear of the second differential device also has a hollow space, and the first feeding shaft passes through the hollow space of the other side gear of the second differential device and further has the other side gear. A portion extending to the other side of the other side gear is rotatably supported by a bearing. According to such a configuration, the first feeding shaft is stably supported.

  Preferably, the first feeding shaft is attachable to and detachable from the other side gear of the second differential device and is on the first differential device side of the second differential device. The side gear is attachable to and detachable from the pinion shaft of the first differential device, and in a state where the second differential device is detached from the first differential device, A pinion shaft can be connected to the drive shaft, and the pinion shaft can be revolved by rotation of the drive shaft. According to such an aspect, the number of roll-shaped original fabrics to be set can be easily switched from three to two (or from two to three).

  More preferably, the first feeding shaft is detachable in a plug-in manner with respect to the other side gear of the second differential device, and the first differential device of the second differential device The side gear on the side is detachable in a plug-in manner with respect to the pinion shaft of the first differential.

  In this specification, the plug-in type is a so-called insertion type, that is, provided on one member of two members (for example, the first feeding shaft and the other side gear of the second differential device). This is a method in which the two members are joined by inserting the convex portion into the corresponding concave portion provided in the other member.

  According to such an aspect, it is possible to quickly and easily attach / detach the first feed shaft and attach / detach the second differential device.

The present invention also provides a second feed shaft having a hollow space in which a roll-shaped second original fabric is set, and a third feed shaft having a hollow space in which a roll-shaped third original fabric is set. Each of the first differential device disposed on the opposite side of the second feed shaft with respect to the third feed shaft, and the roll-shaped second original fabric and the roll-shaped third original fabric, respectively. A nip roller that sandwiches and conveys the web to be fed in common, and the second feeding shaft and the third feeding shaft are arranged coaxially, and Of the two side gears, the side gear on the third feed shaft side has a hollow space and is connected to the third feed shaft, and the two side gears of the first differential gear are The other side gear has a hollow space, and the second feed shaft includes a hollow space of the third feed shaft and the second feed shaft. A pair of pinion gears of the first differential device, which extends through the hollow space of the side gear on the third feed shaft side of the differential device and is connected to the other side gear of the first differential device. An extension kit for a web conveying device, characterized in that a pinion shaft that pivotally supports the shaft is connected to a drive shaft, and the pinion shaft is revolved by the rotation of the drive shaft. A first feed shaft on which the first material is set, and a second differential device, wherein the second differential device has a third feed shaft with respect to the first differential device. Among the two side gears of the second differential device, the side gear on the first differential device side has a hollow space and is removed from the drive shaft. The first differential pinion The first feed shaft includes a hollow space of the second feed shaft, a hollow space of the third feed shaft, and the third feed shaft of the first differential device. A hollow space of the side gear on the feed shaft side, a hollow space of the side gear on the second differential device side of the first differential device, and a side gear on the first differential device side of the second differential device Extending through the hollow space of the second differential device and connected to the other side gear of the second differential device, and the pinion shafts respectively supporting the pair of pinion gears of the second differential device are the drive shafts. The expansion kit is characterized in that the pinion shaft is revolved by rotation of the drive shaft.

  According to the present invention, the number of roll-shaped original fabrics set in the web conveyance device can be easily switched from two to three (or from three to two).

  Preferably, the first feeding shaft is detachable in a plug-in form with respect to the other side gear of the second differential device, and the first differential device side of the second differential device The side gear is attached to and detached from the pinion shaft of the first differential device in a plug-in manner. According to such an aspect, it is possible to quickly and easily attach / detach the first feed shaft and attach / detach the second differential device.

  The present invention also provides a first feeding shaft on which a roll-shaped first original fabric is set, a second feeding shaft having a hollow space on which a roll-shaped second original fabric is set, and the second A third feed shaft having a hollow space, which is arranged on the opposite side of the first feed shaft with respect to the feed shaft, and in which a roll-shaped third raw material is set, and the third feed shaft A fourth feed shaft having a hollow space, which is disposed on the opposite side of the second feed shaft and on which a roll-shaped fourth original fabric is set, and the third feed with respect to the fourth feed shaft. A first differential device disposed on the opposite side of the feed shaft, a second differential device disposed on the opposite side of the fourth feed shaft with respect to the first differential device, and the second differential A third differential device disposed on the opposite side of the first differential device with respect to the device, the roll-shaped first original fabric, the roll-shaped second original fabric, and the roll-shaped third original fabric And said A nip roller for commonly nipping and transporting webs fed from each of the roll-shaped fourth original fabrics, the first feed shaft, the second feed shaft, and the third feed shaft And the fourth feed shaft are arranged coaxially, and of the two side gears of the first differential device, the side gear on the fourth feed shaft side has a hollow space, The side gear which is connected to the fourth feed shaft and is on the second differential side of the two side gears of the first differential has a hollow space, and the third feed shaft Extends through the hollow space of the fourth feed shaft and the hollow space of the side gear on the fourth feed shaft side of the first differential, and the second differential of the first differential It is connected to the side gear on the device side, and the first differential device side of the two side gears of the second differential device A side gear has a hollow space and is connected to a pinion shaft that pivotally supports a pair of pinion gears of the first differential device, and the second gear among the two side gears of the second differential device. The side gear on the side of the three differential device has a hollow space, and the second feed shaft includes a hollow space of the third feed shaft, a hollow space of the fourth feed shaft, and the first difference. A hollow space of the side gear on the fourth feed shaft side of the moving device, a hollow space of the side gear on the second differential device side of the first differential, and the first of the second differential device It extends through the hollow space of the side gear on the differential side and is connected to the side gear on the third differential side of the second differential, and the two side gears of the third differential The side gear on the second differential side is hollow And has a space and is connected to a pinion shaft that pivotally supports a pair of pinion gears of the second differential device, and the first feed shaft is a hollow space of the second feed shaft, A hollow space of a third feed shaft, a hollow space of the fourth feed shaft, a hollow space of a side gear on the fourth feed shaft side of the first differential, and the second of the first differential The hollow space of the side gear on the differential device side, the hollow space of the side gear on the first differential device side of the second differential device, and the side gear on the third differential device side of the second differential device A hollow space extending through a hollow space of a side gear on the second differential device side of the third differential device and connected to the other side gear of the third differential device; Pinion shaft that pivotally supports a pair of pinion gears of the differential There have been connected to the drive shaft, a web conveying apparatus characterized by the pinion shaft is adapted to revolve by the rotation of the drive shaft.

  According to the present invention, the angular velocity difference between the feed shafts (first feed shaft, second feed shaft, third feed shaft, and fourth feed shaft) on which the four roll-shaped raw materials are set is calculated. Since it can tolerate, even if there is a difference in the diameters of the four roll-shaped raw fabrics, the tension of each web can be suitably controlled. For this reason, the web conveyance apparatus which can be fed simultaneously from four roll-shaped original fabrics and can endure practical use is realizable.

  Preferably, the other side gear of the third differential device also has a hollow space, and the first feeding shaft passes through the hollow space of the other side gear of the third differential device and further the other side gear. A portion extending to the other side of the other side gear is rotatably supported by a bearing. According to such an aspect, the first feeding shaft is stably supported.

  Preferably, the first feeding shaft is attachable to and detachable from the other side gear of the third differential device and is on the second differential device side of the third differential device. The side gear is detachable with respect to the pinion shaft of the second differential device, and in a state where the third differential device is detached from the second differential device, A pinion shaft can be connected to the drive shaft, and the pinion shaft can be revolved by rotation of the drive shaft. According to such an aspect, the number of roll-shaped original fabrics to be set can be easily switched from four to three (or from three to four).

  More preferably, the first feed shaft is detachable in a plug-in manner with respect to the other side gear of the third differential device, and the second differential device of the third differential device The side gear on the side is detachable in a plug-in manner with respect to the pinion shaft of the second differential device. According to such an aspect, it is possible to quickly and easily attach / detach the first feed shaft and attach / detach the third differential device.

  Preferably, the second feeding shaft is attachable to and detachable from the other side gear of the second differential device and is on the first differential device side of the second differential device. The side gear is attachable to and detachable from the pinion shaft of the first differential device, and in a state where the second differential device is detached from the first differential device, A pinion shaft can be connected to the drive shaft, and the pinion shaft can be revolved by rotation of the drive shaft. According to such an aspect, the number of roll-shaped original fabrics to be set can be easily switched from four to two (or from two to four).

  More preferably, the second feed shaft is detachable in a plug-in manner with respect to the other side gear of the second differential device, and the first differential device of the second differential device The side gear on the side is detachable in a plug-in manner with respect to the pinion shaft of the first differential. According to such an aspect, according to such an aspect, the attachment and detachment of the second feeding shaft and the attachment and detachment of the second differential device can be performed quickly and easily.

  According to the first aspect of the present invention, the difference in angular velocity between the feed shafts (the first feed shaft, the second feed shaft, and the third feed shaft) on which the three roll-shaped raw materials are set is allowed. Therefore, even if there is a difference in the diameters of the three roll-shaped original fabrics, the tension of each web can be suitably controlled. For this reason, the web conveyance apparatus which can be fed simultaneously from three roll-shaped original fabrics and can endure practical use is realizable.

  Or according to the 2nd aspect of this invention, the angular velocity difference of each feed shaft (a 1st feed shaft, a 2nd feed shaft, and a 3rd feed shaft) by which four roll-shaped original fabrics are set. Therefore, even when there is a difference in the diameters of the four roll-shaped original fabrics, the tension of each web can be suitably controlled. For this reason, the web conveyance apparatus which can be fed simultaneously from four roll-shaped original fabrics and can endure practical use is realizable.

It is the schematic which shows the web conveyance apparatus by the 1st Embodiment of this invention. It is the schematic which shows the principal part of the web conveyance apparatus of FIG. FIG. 5 is a schematic diagram for explaining attachment / detachment of a first feeding shaft and attachment / detachment of a second differential device in the main part of the web conveyance device of FIG. It is the schematic which shows the principal part of the web conveyance apparatus by the 2nd Embodiment of this invention. It is the schematic which shows an example of a structure of the conventional gravure printing machine. It is a schematic diagram for demonstrating the feeding mechanism of the conventional printing machine. It is a schematic diagram for demonstrating the relationship between the diameter of a roll-shaped original fabric, and the tension | tensile_strength of a web.

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

  FIG. 1 is a schematic view showing a web conveyance device according to a first embodiment of the present invention. As shown in FIG. 1, the web conveyance device 1 according to the present embodiment includes a feeding unit 20, an infeed unit 30, a printing unit 40, an outfeed unit 50, and a winding unit 60. Yes. Then, the roll-shaped raw fabric 10 is set on the feeding shaft of the feeding unit 20. As the feed shaft is driven, the web 11 is fed from the roll-shaped raw fabric 10 to the infeed unit 30. The web 11 to be fed is fed to the printing unit 40 via the infeed unit 30, and printing processing is performed in the printing unit 40. Thereafter, the paper is discharged through the outfeed unit 50 and wound up by the winding unit 60.

  FIG. 2 is a schematic diagram illustrating a main part of the web conveyance device 1 according to the present embodiment. The web conveyance device 1 according to the present embodiment includes a first feed shaft 21a on which a roll-shaped first original fabric 10a is set and a second space having a hollow space on which a roll-shaped second original fabric 10b is set. A third feed shaft having a hollow space, which is disposed on the opposite side of the first feed shaft 21a with respect to the feed shaft 21b and the second feed shaft 21b, and in which a roll-shaped third original fabric 10c is set. 21c, a first differential device 22a disposed on the opposite side of the second feed shaft 21b with respect to the third feed shaft 21c, and a third feed shaft 21c with respect to the first differential device 22a A second differential device 22b disposed on the opposite side of the web, and a web 11a fed from a roll-shaped first original fabric 10a, a roll-shaped second original fabric 10b, and a roll-shaped third original fabric 10c, respectively. And 11b and 11c in common, and a nip roller 31 that conveys the same .

  Specifically, the first differential device 22a includes a pair of side gears 23a and 24a, and a pair of pinion gears 25a having a rotation axis orthogonal to the rotation axis of each side gear 23a and 24a and meshing with each side gear 23a and 24a. The pair of pinion gears 25a respectively correspond to the pair of pinion gears 25a, and have a pair of pinion shafts 26a that rotatably support the pair of pinion gears 25a. In the example of FIG. 2, the pair of side gears 23a, 24a and the pair of pinion gears 25a are configured as bevel gears, and the side gears 23a, 24a mesh with each other orthogonally to the pair of pinion gears 25a. With such a configuration, the pair of pinion gears 25a absorbs a rotational speed difference (angular speed difference) between one side gear 23a and the other side gear 24a.

  The second differential device 22b includes a pair of side gears 23b and 24b, a pair of pinion gears 25b having a rotation axis orthogonal to the rotation axis of each side gear 23b and 24b, and meshing with each side gear 23b and 24b. And a pair of pinion shafts 26b that rotatably support the pair of pinion gears 25b. In the example of FIG. 2, the pair of side gears 23b, 24b and the pair of pinion gears 25b are configured as bevel gears, and the side gears 23b, 24b mesh with each other orthogonally to the pair of pinion gears 25b. With such a configuration, the pair of pinion gears 25b absorbs a rotational speed difference (angular speed difference) between one side gear 23b and the other side gear 24b.

  As shown in FIG. 2, the first feeding shaft 21a, the second feeding shaft 21b, and the third feeding shaft 21c are arranged coaxially. The rotation shafts of the pair of side gears 23a and 24a of the first differential device 22a and the rotation shafts of the pair of side gears 23b and 24b of the second differential device 22b are the first feeding shaft 21a and the second feeding shaft. It is coaxial with respect to 21b and the third feeding shaft 21c.

  The third feeding shaft 21c is connected to one side gear 23a of the first differential device 22a, and the second feeding shaft 21b is connected to the other side gear 24a of the first differential device 22a. The pair of pinion shafts 26a of the first differential device 22a is connected to one side gear 23b of the second differential device 22b, and the first feed shaft 21a is connected to the other side gear 24b of the second differential device 22b. It is connected to the. Accordingly, the pair of side gears 23a and 24a of the first differential 22a, the pair of side gears 23b and 24b of the second differential 22b, the first feeding shaft 21a, the second feeding shaft 21b, and the third feeding. The feed shaft 21c can be rotated together.

  Specifically, as shown in FIG. 2, the third feed shaft 21c is connected to the side gear 23a on the third feed shaft 21c side of the two side gears 23a, 24a of the first differential device 22a. Yes.

  Further, the third feed shaft 21c and the side gear 23a of the first differential 22a to which the third feed shaft 21c is connected (the side gear 23a on the third feed shaft 21c side) each have a hollow space. ing. The second feed shaft 21b extends through the hollow space of the third feed shaft 21c and the hollow space of the side gear 23a on the third feed shaft 21c side of the first differential 22a. It is connected to the side gear 24a on the second differential device 22b side of the moving device 22a.

  The pinion shaft 26a that pivotally supports the pair of pinion gears 25a of the first differential device 22a is connected to the side gear 23b on the first differential device 22a side of the two side gears 23b and 24b of the second differential device 22b. It is connected. More specifically, the side gear 23b on the first differential device 22a side of the second differential device 22b is paired with the pair of pinion shafts 26a of the first differential device 22a so that their axes are orthogonal to each other. The first connection member 27a is connected. More specifically, the pair of first connection members 27a has a shape that surrounds the outer edge of the first differential device 22a, and the first differential device 22a side of the second differential device 22b at one end. Is connected to a pair of pinion shafts 26a of the first differential device 22a at the other end.

  The second feed shaft 21b, the side gear 24a of the first differential device 22a to which the second feed shaft 21b is connected (the side gear 24a on the second differential device 22b side), and the first differential device The side gears 23b of the second differential device 22b to which the pinion shafts 26a of 22a are connected (side gears 23b on the first differential device 22a side) each have a hollow space. The first feed shaft 21a includes a hollow space of the second feed shaft 21b, a hollow space of the third feed shaft 21c, and a hollow of the side gear 23a on the third feed shaft 21c side of the first differential device 22a. Through the space, the hollow space of the side gear 24a on the second differential device 22b side of the first differential device 22a, and the hollow space of the side gear 23b on the first differential device 22a side of the second differential device 22b. It extends and is connected to the other side gear 24b of the second differential 22b.

  And the pinion shaft 26b which respectively supports the pair of pinion gears 25b of the second differential device 22b is connected to the drive shaft 28, and the pinion shaft 26b revolves by the rotation of the drive shaft 28. More specifically, the drive shaft 28 is coaxial with the rotation shafts of the pair of side gears 23b and 24b of the second differential device 22b. The drive shaft 28 is connected to the pair of pinion shafts 26b of the second differential device 22b via a pair of second connection members 27b so that their axis lines are orthogonal to each other. More specifically, the pair of second connection members 27b has a shape that surrounds the outer edge of the second differential device 22b, and is connected to the drive shaft 28 at one end and the second differential at the other end. It is connected to a pair of pinion shafts 26b of the device 22b.

  In the present embodiment, the side gear 24b on the other side of the second differential device 22b also has a hollow space. The first feeding shaft 21a extends further to the other through the hollow space of the other side gear 24b of the second differential device 22b, and the portion extending to the other side of the other side gear 24a is a radial portion. The bearing 44a is rotatably supported. On the other hand, the other end of the first feeding shaft 21a is fixed to a support shaft member 41, and the support shaft member 41 can be rotated by a freely rotating bearing member 42 fixed to a housing (not shown). It is supported. The support shaft member 41 and the bearing member 42 are coupled together by pressing a concave fitting portion and a convex fitting portion that are each formed in a truncated conical shape. With such a configuration, the first feeding shaft 21a is stably supported.

  A radial bearing 44b is also fitted into the hollow space of the second feed shaft 21b, and the second feed shaft 21b is thus stably supported by the first feed shaft 21a.

  Further, a radial bearing 44c is also fitted into the hollow space of the third feeding shaft 21c, and thereby the third feeding shaft 21c is stably supported by the second feeding shaft 21b.

  On the other hand, the nip roller 31 includes a driving roller 32 that is rotationally driven, and a rubber roller 33 that is disposed so as to face the driving roller 32 and presses the webs 11a, 11b, and 11c with the driving roller 32. doing. The driving roller 32 and the rubber roller 33 are supported so as to be rotatable around a rotation axis that is perpendicular to the horizontal direction of the webs 11a, 11b, and 11c and is horizontal. Further, the drive roller 32 is rotationally driven by a motor.

  In the present embodiment, the initial rotation speed of the nip roller 31 (drive roller 32) is such that the nip roller 31 (with respect to the rotation speed of the feed shafts 21a, 21b, and 21c is applied to the webs 11a, 11b, and 11c. The rotational speed of the drive roller 32) is determined to be relatively fast.

  In the present embodiment, the first feeding shaft 21a is attachable to and detachable from the other side gear 24b of the second differential device 22b, and the first differential device of the second differential device 22b. The side gear 23b on the 21b side is detachable with respect to the pinion shaft 26a of the first differential 22a. Specifically, the first feeding shaft 21a is detachable in a plug-in manner with respect to the other side gear 24b of the second differential device 22b, and the first differential shaft of the second differential device 22b is attached. The side gear 23b on the device 22a side is detachable in a plug-in manner with respect to the pinion shaft 26b of the first differential device 22a. As shown in FIG. 3, the pinion shaft 26a of the first differential device 22a can be connected to the drive shaft 28 in a state where the second differential device 22b is detached from the first differential device 22a. The pinion shaft 26 a can be revolved by the rotation of the drive shaft 28.

  In the present embodiment, in the web conveyance device 1 ′ shown in FIG. 3, the second feeding shaft 21b extends through the hollow space of the other side gear 24a of the first differential device 22a to the other, A portion extending to the other side of the other side gear 24a is rotatably supported by a radial bearing 44a '. On the other hand, the other end of the second feed shaft 21b is fixed to a support shaft member 41 ', and the support shaft member 41' is rotatably supported by the bearing member 42 described above. The support shaft member 41 ′ and the bearing member 42 are coupled together by pressing a concave fitting portion and a convex fitting portion that are each formed in a truncated conical shape. With such a configuration, the second feeding shaft 21b is stably supported.

  In the present embodiment, the extension kit 5 of the web conveyance device 1 ′ shown in FIG. 3 includes a first feeding shaft 21a on which a roll-shaped first raw fabric 10a is set, a second differential device 22b, Is provided.

  Next, the operation of the present embodiment having such a configuration will be described.

  As shown in FIG. 2, when the drive shaft 28 is rotationally driven with the second differential device 22 b attached to the first differential device 22 a, the second differential device 22 b connected to the drive shaft 28. The pair of pinion shafts 26b rotates. The rotation of the pair of pinion shafts 26b of the second differential device 22b is caused by the rotation of the first differential device 22a from the pair of pinion gears 25b of the second differential device 22b through the side gears 23b and 24b of the second differential device 22b. The pair of pinion shafts 26a and the first feed shaft 21a are equally transmitted to the pair of pinion shafts 26a and the first feed shaft 21a of the first differential device 22a. Called the revolution of the device).

  Then, the rotation of the pair of pinion shafts 26a of the first differential device 22a is caused by the third feed shaft from the pair of pinion gears 25a of the first differential device 22a through the side gears 23a and 24a of the first differential device 22a. 21c and the second feeding shaft 21b are transmitted equally, and the third feeding shaft 21c and the second feeding shaft 21b also start to rotate at the same angular velocity.

  Thereby, the roll-shaped first original fabric 10a, the roll-shaped second original fabric 10b, and the roll-shaped third material set on the first feeding shaft 21a, the second feeding shaft 21b, and the third feeding shaft 21c. The webs 11a, 11b and 11c start to be fed from the original fabric 10c. When the drive roller 32 is also rotationally driven along with the rotational drive of the drive shaft 28, the fed webs 11a, 11b, and 11c are conveyed while being held in common by the drive roller 32 and the rubber roller 33.

  Here, for example, a case where the diameter of the roll-shaped second original fabric 10b is smaller than the diameter of the roll-shaped third original fabric 10c is considered. In this case, if the second feeding shaft 21b and the third feeding shaft 21c continue to rotate at a constant speed, the feeding speed of the web 11c fed from the relatively large-diameter third original fabric 10c. However, it becomes faster than the feeding speed of the web 11b fed from the relatively small second raw fabric 10b. Then, the web 11c fed from the third original fabric 10c becomes weak in tension due to excessive feeding, while the web 11b fed from the second original fabric 10b becomes strong in tension because of insufficient feeding. . This strong tension acting on the web 11b fed from the second original fabric 10b pulls the web 11b fed from the second original fabric 10b and tries to rotate the second feed shaft 21b quickly. When the rotational speed of the second feed shaft 21b, that is, the rotational speed of the side gear 24a on the second differential device 22b side of the first differential device 22a is increased as much as possible, the third feed shaft of the first differential device 22a. A speed difference is generated between the rotational speed of the side gear 23a on the 21c side and the rotational speed of the side gear 24a on the second differential device 22b side, and the pair of pinion gears 25a of the first differential device 22a are moved by the side gears 23a and 24a. The rotational speed of the side gear 23a on the third feeding shaft 21c side, that is, the rotational speed of the third feeding shaft 21c is reduced (this rotation is referred to as “rotation of the differential device”). be called). As a result, excessive tension of the web 11b fed from the second feeding shaft 21b is suppressed, and excessive feeding of the web 11c fed from the third feeding shaft 21c is suppressed, and the web 11c is necessary. Tension is maintained.

  Further, for example, a case is considered where the diameter of the roll-shaped first original fabric 10a is smaller than the diameter of the roll-shaped second original fabric 10b and the diameter of the roll-shaped third original fabric 10c. In this case, if the first feeding shaft 21a, the second feeding shaft 21b, and the third feeding shaft 21c continue to rotate at a constant speed, the relatively large-diameter second original fabric 10b and third original fabric 10c. The feeding speeds of the webs 11b and 11c fed from the web 11a are faster than the feeding speed of the web 11a fed from the relatively small-diameter first original fabric 10a. Then, while the webs 11b and 11c fed from the second original fabric 10b and the third original fabric 10c are weakened due to excessive feeding, the web 11a fed from the first original fabric 10a is fed. Tension increases due to insufficient feeding. The strong tension acting on the web 11a fed from the first original fabric 10a pulls the web 11a and tries to rotate the first feeding shaft 21a quickly. When the rotational speed of the first feed shaft 21a, that is, the rotational speed of the side gear 24b on the other side of the second differential device 22b is increased as much as possible, the side gear 23b on the first differential device 22a side of the second differential device 22b. Difference between the rotational speed of the second differential gear 22b and the rotational speed of the other side gear 24b, the pair of pinion gears 25b of the second differential device 22b are rotated by the side gears 23b and 24b, There is an effect that the rotational speed of the side gear 23b, that is, the rotational speed of the pair of pinion shafts 26a of the first differential 22a becomes slower. As a result, excessive tension of the web 11a fed from the first feeding shaft 21a is suppressed, and excessive feeding of the webs 11b and 11c fed from the second feeding shaft 21b and the third feeding shaft 21c. And the necessary tension of the webs 11b and 11c is maintained.

  That is, in the web conveyance device 1 according to the present embodiment, even when there is a difference in the diameters of the three roll-shaped raw fabrics 10a, 10b, and 10c, the first feeding shaft 21a and the second feeding shaft. Since the angular velocity difference between 21b and the third feeding shaft 21c is allowed, the tensions of the webs 11a, 11b, and 11c can be suitably controlled.

  Next, consider a case where the number of roll-shaped original fabrics 10a, 10b and 10c to be set is switched from three to two.

  As shown in FIG. 2, in the state where the second differential device 22b is attached to the first differential device 22a and the first feed shaft 21a is attached to the second differential device 22b, the first feed shaft 21a. If the roll-shaped first raw fabric 10a is removed from the first feed shaft 21a, the first feeding shaft 21a becomes unloaded, that is, the other side gear 24b of the second differential device 22b becomes unloaded. For this reason, even if the drive shaft 28 is rotationally driven, the pair of pinion gears 25b of the second differential device 22b are idled, and the side gear 23b on the first differential device 22a side cannot be rotated. Accordingly, the pair of pinion shafts 26a of the first differential device 22a cannot be rotated, and as a result, the second feeding shaft 21b and the third feeding shaft 21c cannot be rotated.

  In contrast, in the present embodiment, as shown in FIG. 3, the roll-shaped first raw fabric 10a is removed from the first feed shaft 21a, and the first feed shaft 21a is replaced by the second differential device. The second differential device 22b is removed from the first differential device 22a, and the pair of pinion shafts 26a of the first differential device 22a are connected to the drive shaft 28 in this state. In this case, when the drive shaft 28 is rotationally driven, the pair of pinion shafts 26a of the first differential 22a connected to the drive shaft 28 rotate, and the rotation of the pinion shaft 26a is changed from the pair of pinion gears 25a. It is transmitted equally to the third feeding shaft 21c and the second feeding shaft 21b via the side gears 23a and 24a, and the third feeding shaft 21c and the second feeding shaft 21b start to rotate at the same angular velocity. Thereby, even after the number of the roll-shaped original fabrics 10a, 10b and 10c is switched from three to two, the webs 11b and 11c are simultaneously fed from the respective roll-shaped original fabrics 10b and 10c. Can do.

  Further, in the present embodiment, the web conveyance device 1 ′ shown in FIG. 3 is provided with a first feeding shaft 21a on which a roll-shaped first raw fabric 10a is set and a second differential device 22b. Kit 5 can be properly installed. Thereby, the number of roll-shaped original fabrics to be set can be easily switched from two to three.

  According to the present embodiment as described above, the respective feed shafts (the first feed shaft 21a, the second feed shaft 21b, and the third feed) on which the three roll-shaped original fabrics 10a, 10b, and 10c are set. Since the difference in the angular velocity of the feed shaft 21c) can be tolerated, the tensions of the webs 11a, 11b and 11c can be adjusted even when there are differences in the diameters of the three roll-shaped raw fabrics 10a, 10b and 10c. It can control suitably. For this reason, the web conveyance apparatus 1 that can feed the webs 11a, 11b, and 11c from the three roll-shaped original fabrics 10a, 10b, and 10c at the same time can be realized.

  Further, according to the present embodiment, the number of roll-shaped original fabrics 10a, 10b, and 10c to be set can be easily switched from three to two (or from two to three).

  Furthermore, according to the present embodiment, the first feeding shaft 21a and the second differential device 22b are detachable in a plug-in manner, so that the first feeding shaft 21a can be attached and detached and the second differential device can be detached. The apparatus 22b can be attached and detached quickly and easily.

  Next, with reference to FIG. 4, the web conveyance apparatus by the 2nd Embodiment of this invention is demonstrated. The web conveyance device 2 shown in FIG. 4 is disposed on the opposite side of the second feeding shaft 21b with respect to the third feeding shaft 21c, and has a hollow space in which a roll-shaped fourth original fabric 10d is set. The only difference is that the four feed shafts 21d and the third differential 22c disposed on the opposite side of the first differential 22a with respect to the second differential 22b are further provided. Is substantially the same as the embodiment shown in FIGS.

  In FIG. 4, the same parts as those of the first embodiment shown in FIGS. 2 and 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the web conveyance device 2 shown in FIG. 4, the first feeding shaft 21a, the second feeding shaft 21b, the third feeding shaft 21c, and the fourth feeding shaft 21d are arranged coaxially. Of the two side gears 23a, 24a of the first differential 22a, the side gear 23a on the fourth feed shaft 21d side has a hollow space and is connected to the fourth feed shaft 21d. Of the two side gears 23a, 24a of one differential 22a, the side gear 24a on the second differential 22b side has a hollow space.

  The third feed shaft 21c extends through the hollow space of the fourth feed shaft 21d and the hollow space of the side gear 23a on the fourth feed shaft 21d side of the first differential device 22a. The moving device 22a is connected to the side gear 24a on the second differential device 22b side.

  Of the two side gears 23b, 24b of the second differential device 22b, the side gear 23b on the first differential device 22a side has a hollow space and a pair of pinion gears 25a of the first differential device 22a. Are connected to a pinion shaft 26a. Of the two side gears 23b and 24b of the second differential device 22b, the side gear 24b on the third differential device 22c side has a hollow space.

  The second feed shaft 21b includes a hollow space of the third feed shaft 21c, a hollow space of the fourth feed shaft 21d, and a hollow of the side gear 23a on the fourth feed shaft 21d side of the first differential device 22a. Through the space, the hollow space of the side gear 24a on the second differential device 22b side of the first differential device 22a, and the hollow space of the side gear 23b on the first differential device 22a side of the second differential device 22b. It extends and is connected to a side gear 24b on the third differential device 22c side of the second differential device 22b.

  Of the two side gears 23c, 24c of the third differential device 22c, the side gear 23c on the second differential device 22b side has a hollow space and a pair of pinion gears 25b of the second differential device 22b. Are connected to pinion shafts 26b.

  The first feed shaft 21a includes the hollow space of the second feed shaft 21b, the hollow space of the third feed shaft 21c, the hollow space of the fourth feed shaft 21d, and the fourth feed of the first differential device 22a. The hollow space of the side gear 23a on the feed shaft 21d side, the hollow space of the side gear 24a on the second differential device 22b side of the first differential device 22a, and the first differential device 22a side of the second differential device 22b The hollow space of the side gear 23b, the hollow space of the side gear 24b on the third differential device 22c side of the second differential device 22b, and the hollow of the side gear 23c on the second differential device 22b side of the third differential device 22c It extends through the space and is connected to the other side gear 24c of the third differential 22c.

  A pinion shaft 26c that pivotally supports a pair of pinion gears 25c of the third differential device 22c is connected to the drive shaft 28, and the pinion shaft 26c revolves as the drive shaft 28 rotates.

  In the present embodiment, the other side gear 24c of the third differential device 22c also has a hollow space, and the first feeding shaft 21a is hollow in the other side gear 24c of the third differential device 22c. The portion extending through the space to the other side and extending to the other side of the other side gear 24c is rotatably supported by the radial bearing 44a. Thereby, the first feeding shaft 21a is stably supported.

  Further, in the present embodiment, the first feeding shaft 21a is detachable with respect to the other side gear 24c of the third differential device 22c, and the second differential device of the third differential device 22c. The side gear 23c on the 22b side can be attached to and detached from the pinion shaft 26b of the second differential device 22b. When the third differential device 22c is detached from the second differential device 22b, the pinion shaft 26b of the second differential device 22b can be connected to the drive shaft 28, and the pinion shaft 26b is driven. Revolution is possible by the rotation of the shaft 28. Specifically, the first feed shaft 21a is detachable in a plug-in manner with respect to the other side gear 24c of the third differential device 22c, and the second differential of the third differential device 22c. The side gear 23b on the device 22b side is detachable in a plug-in manner with respect to the pinion shaft 26b of the second differential device 22b.

  In the present embodiment, the second feeding shaft 21b is detachable from the other side gear 24b of the second differential device 22b, and the first differential device of the second differential device 22b. The side gear 23b on the 22a side can be attached to and detached from the pinion shaft 26a of the first differential 22a. In the state where the second differential device 22b is detached from the first differential device 22a, the pinion shaft 26a of the first differential device 22a can be connected to the drive shaft 28, and the pinion shaft 26a is driven. Revolution is possible by the rotation of the shaft 28.

  In the web conveyance device 2 according to the second embodiment as described above, as shown in FIG. 4, when the drive shaft 28 is driven to rotate, the second connected to the drive shaft 28 via the third connecting member 27c. A pair of pinion shafts 26c of the three-differential device 22c rotates. The rotation of the pair of pinion shafts 26c of the third differential device 22c is caused by the rotation of the second differential device 22b from the pair of pinion gears 25c of the third differential device 22c through the side gears 23c and 24c of the third differential device 22c. The pair of pinion shafts 26b and the first feed shaft 21a are transmitted equally to each other, and the pair of pinion shafts 26b and the first feed shaft 21a of the second differential device 22b start to rotate at the same angular velocity.

  Then, the rotation of the pair of pinion shafts 26b of the second differential device 22b is performed from the pair of pinion gears 25b of the second differential device 22b through the side gears 23b and 24b of the second differential device 22b. The pair of pinion shafts 26a of the 22a and the second feed shaft 21b are equally transmitted, and the pair of pinion shafts 26a and the second feed shaft 21b of the first differential device 22a also start to rotate at the same angular velocity.

  Then, the rotation of the pair of pinion shafts 26a of the first differential device 22a is caused by the third feed shaft from the pair of pinion gears 25a of the first differential device 22a through the side gears 23a and 24a of the first differential device 22a. 21c and the second feeding shaft 21b are transmitted equally, and the third feeding shaft 21c and the second feeding shaft 21b also start to rotate at the same angular velocity.

  Thereby, each web 11a, 11b, 11c, and 11d begins to be fed from each feed shaft 21a, 21b, 21c, and 21d. When the driving roller 32 is also rotationally driven, the fed webs 11 a, 11 b, 11 c, and 11 d are conveyed while being held in common by the driving roller 32 and the rubber roller 33.

  Here, for example, the diameter of the roll-shaped first original fabric 10a is larger than the diameter of the roll-shaped second original fabric 10b, the diameter of the roll-shaped third original fabric 10c, and the diameter of the roll-shaped fourth original fabric 10d. Consider a small case. In this case, if the first feed shaft 21a, the second feed shaft 21b, the third feed shaft 21c, and the fourth feed shaft 21d continue to rotate at a constant speed, a relatively large-diameter second original fabric 10b, the webs 11b, 11c and 11d fed from the third original fabric 10c and the fourth original fabric 10d have a feeding speed of the web 11a fed from the relatively small-diameter first original fabric 10a. It becomes faster than the feeding speed. Then, while the webs 11b, 11c, and 11d fed from the second original fabric 10b, the third original fabric 10c, and the fourth original fabric 10d are weakened due to excessive feeding, The web 11a to be fed has a high tension due to insufficient feeding. The strong tension acting on the web 11a fed from the first original fabric 10a pulls the web 11a and tries to rotate the first feeding shaft 21a quickly. When the rotational speed of the first feeding shaft 21a, that is, the rotational speed of the side gear 24c on the other side of the third differential device 22c is increased as much as possible, the side gear 23c on the second differential device 22b side of the third differential device 22c. A difference in speed occurs between the rotational speed of the second differential gear 22c and the rotational speed of the other side gear 24c. The pair of pinion gears 25c of the third differential gear 22c are rotated by the side gears 23c and 24c, and the second differential gear 22b side This causes an effect that the rotational speed of the side gear 23c, that is, the rotational speed of the pair of pinion shafts 26b of the second differential device 22b becomes slower. As a result, excessive tension of the web 11a fed from the first feeding shaft 21a is suppressed, and the web fed from the second feeding shaft 21b, the third feeding shaft 21c, and the fourth feeding shaft 21d. The excessive feeding of 11b, 11c and 11d is suppressed, and the necessary tension of the webs 11b, 11c and 11d is maintained.

  That is, in the web conveyance device 1 according to the present embodiment, even when there is a difference in the diameters of the four roll-shaped original fabrics 10a, 10b, 10c, and 10d, the first feeding shaft 21a and the second feeding shaft Since a difference in angular velocity among the feed shaft 21b, the third feed shaft 21c, and the fourth feed shaft 21d is allowed, the tensions of the webs 11a, 11b, 11c, and 11d can be suitably controlled.

  Next, consider a case where the number of roll-shaped original fabrics 10a, 10b, 10c and 10d to be set is switched from four to three.

  Referring to FIG. 4, the roll-shaped first raw fabric 10a is removed from the first feed shaft 21a, and the first feed shaft 21a is removed from the third differential device 22c. Is removed from the second differential 22b, and in this state, the pair of pinion shafts 26b of the second differential 22b is connected to the drive shaft 28. In this case, when the drive shaft 28 is driven to rotate, the pair of pinion shafts 26b of the second differential device 22b connected to the drive shaft 28 rotate, and the rotation of the pinion shaft 26b is changed from the pair of pinion gears 25b to each other. The pair of pinion shafts 26a and the second feed shaft 21b of the first differential device 22a are transmitted equally to the pair of pinion shafts 26a and the second feed shaft 21b of the first differential device 22a via the side gears 23b and 24b. Begins to rotate at equal angular velocities. Further, the rotation of the pair of pinion shafts 26a of the first differential device 22a is equally transmitted from the pair of pinion gears 25a to the fourth feeding shaft 21d and the third feeding shaft 21c through the side gears 23a and 24a. The four feeding shafts 21d and the third feeding shaft 21c start to rotate at equal angular velocities. Accordingly, even after the number of the roll-shaped original fabrics 10a, 10b, 10c, and 10d is switched from four to three, the webs 11b, 11c, and 10d are converted from the respective roll-shaped original fabrics 10b, 10c, and 10d. Can be fed simultaneously.

  Further, consider a case where the number of roll-shaped original fabrics 10b, 10c and 10d to be set is switched from three to two.

  Referring to FIG. 4, the roll-shaped second raw fabric 10b is removed from the second feed shaft 21b, and the second feed shaft 21b is removed from the second differential device 22b. Is removed from the first differential 22a, and in this state, the pair of pinion shafts 26a of the first differential 22a are connected to the drive shaft 28. In this case, when the drive shaft 28 is rotationally driven, the pair of pinion shafts 26a of the first differential 22a connected to the drive shaft 28 rotate, and the rotation of the pinion shaft 26a is changed from the pair of pinion gears 25a. It is transmitted equally to the fourth feed shaft 21d and the third feed shaft 21c via the side gears 23a and 24a, and the fourth feed shaft 21d and the third feed shaft 21c start to rotate at the same angular velocity. Thereby, even after the number of the roll-shaped original fabrics 10b, 10c and 10d is switched from three to two, the webs 11c and 10d are simultaneously fed from the respective roll-shaped original fabrics 10c and 10d. Can do.

  That is, according to the second embodiment as described above, each feed shaft (first feed shaft 21a, second feed) on which the four roll-shaped original fabrics 10a, 10b, 10c, and 10d are set. Since the angular velocity difference between the shaft 21b, the third feeding shaft 21c and the fourth feeding shaft 21d) can be allowed, there is a difference in the diameters of the four roll-shaped raw fabrics 10a, 10b, 10c and 10d. Even so, the tension of each of the webs 11a, 11b, 11c and 11d can be suitably controlled. For this reason, the web conveyance apparatus 2 that can withstand the practical use and can simultaneously feed the webs 11a, 11b, 11c, and 11d from the four roll-shaped original fabrics 10a, 10b, 10c, and 10d can be realized.

  Moreover, according to this Embodiment, the number of the roll-shaped original fabrics set can be switched easily from 4 to 3 (or from 3 to 4). Moreover, the number of roll-shaped original fabrics to be set can be easily switched from four to two (or from two to four).

  Note that the same expansion is possible for five or more rolls.

DESCRIPTION OF SYMBOLS 1, 1 ', 2 Web conveyance apparatus 5 Expansion kit 10 Roll-shaped original fabric 10a Roll-shaped 1st original fabric 10b Roll-shaped 2nd original fabric 10c Roll-shaped 3rd original fabric 10d Roll-shaped 4th original fabric 11, 11a, 11b, 11c, 11d Web 20 feeding section
21a First feed shaft 21b Second feed shaft 21c Third feed shaft 21d Fourth feed shaft 22a First differential device 22b Second differential device 22c Third differential device 23a, 24a First differential device Side gears 23b and 24b Side gears 23c and 24c of the second differential gear Side gear 25a of the third differential gear Pinion gear 25b of the first differential gear Pinion gear 25c of the second differential gear Pinion gear 26a of the third differential gear First difference Pinion shaft 26b of the moving device Pinion shaft 26c of the second differential device Pinion shaft 27a of the third differential device First connection member 27b Second connection member 27c Third connection member 28 Drive shaft 30 Infeed part 31 Nip roller 32 Drive roller 33 Rubber roller 40 Printing section 41 Support shaft member 42 Bearing members 44a, 44b, 44c, 44d Radial bearing 50 DOO feed unit 60 up unit 500 rolled raw 501,501a, 501b web 502 feeder 503 in-feed unit 504 printing unit 505 outfeed section 506 winding section 510 feeding shaft 511 nip roller 512 drives roller 513 rubber roller

Claims (12)

A first feed shaft on which a roll-shaped first material is set;
A second feed shaft having a hollow space in which a roll-shaped second raw fabric is set;
A third feed shaft having a hollow space, which is arranged on the opposite side of the first feed shaft with respect to the second feed shaft, and in which a roll-shaped third raw material is set;
A first differential disposed on the opposite side of the second feed shaft with respect to the third feed shaft;
A second differential disposed on the opposite side of the third feed shaft with respect to the first differential;
A nip roller for commonly nipping and transporting the web fed from each of the roll-shaped first original fabric, the roll-shaped second original fabric and the roll-shaped third original fabric,
With
The first feeding shaft, the second feeding shaft, and the third feeding shaft are arranged coaxially,
Of the two side gears of the first differential, the side gear on the third feed shaft side has a hollow space and is connected to the third feed shaft,
Of the two side gears of the first differential device, the side gear on the second differential device side has a hollow space,
The second feed shaft extends through the hollow space of the third feed shaft and the hollow space of the side gear on the third feed shaft side of the first differential device, and the first differential device Connected to the side gear on the second differential side of
Of the two side gears of the second differential device, the side gear on the first differential device side has a hollow space, and pinion shafts that respectively support the pair of pinion gears of the first differential device Connected to
The first feed shaft is a hollow space of the second feed shaft, a hollow space of the third feed shaft, a hollow space of a side gear on the third feed shaft side of the first differential, Extending through the hollow space of the side gear on the second differential device side of the first differential device and the hollow space of the side gear on the first differential device side of the second differential device, Connected to the other side gear of the two differential gear,
A web transport characterized in that a pinion shaft that respectively supports a pair of pinion gears of the second differential device is connected to a drive shaft, and the pinion shaft is revolved by rotation of the drive shaft. apparatus. The other side gear of the second differential device also has a hollow space,
The first feeding shaft extends through the hollow space of the other side gear of the second differential device and further extends to the other, and a portion extending to the other side of the other side gear can be rotated by a bearing. The web conveyance device according to claim 1, wherein the web conveyance device is supported. The first feeding shaft is attachable to and detachable from the other side gear of the second differential device,
The side gear on the first differential device side of the second differential device is detachable from the pinion shaft of the first differential device,
In a state where the second differential device is detached from the first differential device, the pinion shaft of the first differential device can be connected to the drive shaft, and the pinion shaft rotates the drive shaft. The web conveyance device according to claim 1, wherein the web conveyance device can revolve. The first feeding shaft is detachable in a plug-in manner with respect to the other side gear of the second differential device,
The side gear on the first differential device side of the second differential device is detachable in a plug-in manner with respect to the pinion shaft of the first differential device. The web conveyance apparatus as described in. A second feed shaft having a hollow space in which a roll-shaped second raw fabric is set;
A third feed shaft having a hollow space in which a roll-shaped third raw fabric is set;
A first differential disposed on the opposite side of the second feed shaft with respect to the third feed shaft;
A nip roller for nipping and conveying the webs fed from the roll-shaped second original fabric and the roll-shaped third original fabric, respectively,
With
The second feeding shaft and the third feeding shaft are arranged coaxially,
Of the two side gears of the first differential, the side gear on the third feed shaft side has a hollow space and is connected to the third feed shaft,
Of the two side gears of the first differential, the other side gear has a hollow space,
The second feed shaft extends through the hollow space of the third feed shaft and the hollow space of the side gear on the third feed shaft side of the first differential, and the first differential Connected to the other side gear of
A web transport characterized in that a pinion shaft that respectively supports a pair of pinion gears of the first differential device is connected to a drive shaft, and the pinion shaft is revolved by rotation of the drive shaft. An expansion kit for the device,
A first feed shaft on which a roll-shaped first material is set;
A second differential,
With
The second differential device is arranged on the opposite side of the third feed shaft with respect to the first differential device, and the second differential device includes the second differential gear among the two side gears of the second differential device. A side gear on one differential device side has a hollow space and is connected to the pinion shaft of the first differential device removed from the drive shaft,
The first feed shaft is a hollow space of the second feed shaft, a hollow space of the third feed shaft, a hollow space of a side gear on the third feed shaft side of the first differential, Extending through the hollow space of the side gear on the second differential device side of the first differential device and the hollow space of the side gear on the first differential device side of the second differential device, It is designed to be connected to the other side gear of the two differential device,
An expansion kit characterized in that a pinion shaft that respectively supports a pair of pinion gears of the second differential device is connected to the drive shaft, and the pinion shaft revolves by rotation of the drive shaft. . The first feeding shaft is detachable in a plug-in manner with respect to the other side gear of the second differential device,
The side gear on the first differential device side of the second differential device is detachable in a plug-in manner with respect to the pinion shaft of the first differential device. Expansion kit as described in A first feed shaft on which a roll-shaped first material is set;
A second feed shaft having a hollow space in which a roll-shaped second raw fabric is set;
A third feed shaft having a hollow space, which is arranged on the opposite side of the first feed shaft with respect to the second feed shaft, and in which a roll-shaped third raw material is set;
A fourth feed shaft having a hollow space, which is arranged on the opposite side of the second feed shaft with respect to the third feed shaft, and in which a roll-shaped fourth raw material is set;
A first differential disposed on the opposite side of the third feed shaft with respect to the fourth feed shaft;
A second differential disposed on the opposite side of the fourth feed shaft with respect to the first differential;
A third differential disposed on the opposite side of the first differential with respect to the second differential;
The web fed from each of the roll-shaped first original fabric, the roll-shaped second original fabric, the roll-shaped third original fabric and the roll-shaped fourth original fabric is nipped and conveyed in common. A nip roller to
With
The first feeding shaft, the second feeding shaft, the third feeding shaft, and the fourth feeding shaft are arranged coaxially,
Of the two side gears of the first differential, the side gear on the fourth feed shaft side has a hollow space and is connected to the fourth feed shaft,
Of the two side gears of the first differential device, the side gear on the second differential device side has a hollow space,
The third feed shaft extends through the hollow space of the fourth feed shaft and the hollow space of the side gear on the fourth feed shaft side of the first differential, and the first differential Connected to the side gear on the second differential side of
Of the two side gears of the second differential device, the side gear on the first differential device side has a hollow space, and pinion shafts that respectively support the pair of pinion gears of the first differential device Connected to
Of the two side gears of the second differential device, the side gear on the third differential device side has a hollow space,
The second feed shaft includes a hollow space of the third feed shaft, a hollow space of the fourth feed shaft, a hollow space of a side gear on the fourth feed shaft side of the first differential, Extending through the hollow space of the side gear on the second differential device side of the first differential device and the hollow space of the side gear on the first differential device side of the second differential device, Connected to the side gear on the third differential side of the two differentials,
Of the two side gears of the third differential device, the side gear on the second differential device side has a hollow space, and pinion shafts that respectively support the pair of pinion gears of the second differential device Connected to
The first feed shaft includes a hollow space of the second feed shaft, a hollow space of the third feed shaft, a hollow space of the fourth feed shaft, and the fourth feed of the first differential device. Hollow space of the side gear on the shaft side, hollow space of the side gear on the second differential device side of the first differential device, hollow space of the side gear on the first differential device side of the second differential device Extending through the hollow space of the side gear on the third differential device side of the second differential device and the hollow space of the side gear on the second differential device side of the third differential device, Connected to the other side gear of the third differential,
A web transport characterized in that a pinion shaft that respectively supports a pair of pinion gears of the third differential gear is connected to a drive shaft, and the pinion shaft is revolved by the rotation of the drive shaft. apparatus. The other side gear of the third differential device also has a hollow space,
The first feed shaft extends through the hollow space of the other side gear of the third differential device to the other, and a portion extending to the other side of the other side gear can be rotated by a bearing. The web conveyance device according to claim 7, wherein the web conveyance device is supported. The first feeding shaft is attachable to and detachable from the other side gear of the third differential.
The side gear on the second differential device side of the third differential device is detachable from the pinion shaft of the second differential device,
In a state where the third differential device is detached from the second differential device, the pinion shaft of the second differential device can be connected to the drive shaft, and the pinion shaft rotates the drive shaft. The web conveyance device according to claim 7, wherein the web conveyance device can revolve. The first feeding shaft is detachable in a plug-in manner with respect to the other side gear of the third differential device,
The side gear on the second differential device side of the third differential device is detachable in a plug-in manner with respect to the pinion shaft of the second differential device. The web conveyance apparatus as described in. The second feeding shaft is detachable with respect to the other side gear of the second differential.
The side gear on the first differential device side of the second differential device is detachable from the pinion shaft of the first differential device,
In a state where the second differential device is detached from the first differential device, the pinion shaft of the first differential device can be connected to the drive shaft, and the pinion shaft rotates the drive shaft. The web conveyance device according to claim 7, wherein the web conveyance device can revolve. The second feeding shaft is detachable in a plug-in manner with respect to the other side gear of the second differential device,
The side gear on the first differential device side of the second differential device is detachable in a plug-in manner with respect to the pinion shaft of the first differential device. The web conveyance apparatus as described in.

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