JP2014046675A - Laminating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminating apparatus capable of simultaneously feeding, via at least either of web feeding units, webs from multiple rolled raw fabrics.SOLUTION: The provided laminating apparatus comprises a first web feeding unit 10 for feeding/conveying first webs 111 respectively from two first raw fabrics 110, a second web feeding unit 20 for feeding/conveying two second webs 211, and nip rollers 30 for commonly nipping and conveying, while laminating the second webs 211 atop the respective first webs 111, the respective laminated first web and second web pairs. The first web feeding unit 10 includes two first feeding/conveying shafts 121 on which the respective first raw fabrics 110 are set, and the respective first feeding/conveying shafts 121 are connected to the corresponding first side gears 123 of a first differential apparatus 122. The first pinion shaft 125 of the first differential apparatus 122 is connected to a first drive shaft 128 and revolves based on the rotation of the first drive shaft 128.

Description

  The present invention relates to a laminating apparatus for overlapping and joining webs.

  A conventional laminating apparatus will be described with reference to FIG. FIG. 9 is a schematic side view showing a conventional laminating apparatus. As shown in FIG. 9, the laminating apparatus includes a first web supply unit 501 that feeds the first web 511 from one roll-shaped first raw fabric 510 set on the first feed shaft 521, A second web supply unit 602 that feeds the second web 611 from one roll-shaped second raw fabric 610 set on the two feed shafts 621, and a first web fed from the first web supply unit 501 And a nip roller 530 that sandwiches and conveys the stacked first web 511 and the second web 611 while the second web 611 fed from the second web supply unit 602 is stacked on the 511.

  Furthermore, the laminating apparatus of FIG. 9 includes an application unit 541 that applies an adhesive to the second web 611 fed from the second web supply unit 602, and a drying unit 545 that dries the adhesive of the second web 611. It is equipped with.

  As the first feeding shaft 521 and the second feeding shaft 621 are driven, the first web 511 and the second web 611 are fed from the roll-shaped first original fabric 510 and the second original fabric 610, respectively. Is done. After the second web 611 is coated with the adhesive by the coating unit 541, the adhesive coated on the second web 611 is dried by the drying unit 545. Thereafter, the second web 611 is overlaid on the first web 511 by the nip roller 530, and the overlaid first web 511 and second web 611 are pressed while being heated.

  At this time, the tension of the first web 511 fed from the first feeding shaft 521 is controlled by adjusting the rotational speed of the first feeding shaft 521 with respect to the rotational speed of the nip roller 530. Similarly, the tension of the second web 611 fed from the second feed shaft 621 is controlled by adjusting the rotational speed of the second feed shaft 621 with respect to the rotational speed of the nip roller 530.

Japanese Patent No. 2888704

Here, with reference to FIG. 10, in the first web supply unit 501 of the conventional laminating apparatus, a roll-shaped first original fabric 510 _a having _a relatively large diameter ra and a relatively small diameter. consider a first raw 510b rolled with a certain diameter r _b, the case where both are set to the first feeding shaft 521 identical to. FIG. 10 is a schematic diagram for explaining the relationship between the roll-shaped original fabric diameter and the web tension when two original fabrics having different diameters are set on the same feeding shaft. In addition, in order to make an understanding easy, illustration about the 2nd web fed from a 2nd web supply part is abbreviate | omitted.

In this case, the first webs 511 a and 511 b fed from the first original fabrics 510 a and 510 b by the rotation of the first feeding shaft 521 are conveyed while being held in common by the nip rollers 530. Here, since the angular velocities of the respective first original fabrics 510a and 510b and the angular velocity ω of the first feeding shaft 521 are naturally the same, the first web fed from the first original fabric 510a having _a large diameter ra. towards the feed speed _{V a} of 511a it is faster than the feed speed _{V b} of the first web 511b fed from the first raw 510b of smaller diameter _{r b.} Therefore, the first web 511a is slackened and tension is not applied, and the feeding of the first web 511a does not work well, or the first web 511b is over tensioned and the first web 511b is broken. There is a risk that.

  In addition, one wide roll-shaped original fabric 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 device is known (Patent Document 1). However, there is no known laminating apparatus capable of setting a plurality of roll-shaped original fabrics in each web supply unit.

  The present invention has been devised to pay attention to the above problems and to effectively solve them. An object of the present invention is to provide a laminating apparatus capable of simultaneously feeding webs from respective webs in at least one web feeding unit having feeding shafts arranged coaxially with each other on which roll-shaped webs are respectively set. There is to do.

  The present applicant has already proposed a web conveyance device capable of simultaneously feeding webs from two or more original fabrics (Japanese Patent Application Nos. 2011-194943 and 2012-074062). In the present invention, the invention is further improved and applied to a laminating apparatus.

  The present invention provides a first web supply unit that feeds a first web from two roll-shaped first webs, and a second web that feeds a second web from two roll-shaped second webs, respectively. While superimposing the second web fed from the second feeding unit on the first web fed from the feeding unit and the first web feeding unit, the first web and the second web stacked on each other A first nip roller that conveys the web while pinching it in common, and the first web supply section has two first feed shafts arranged coaxially with each other, each set with a roll-shaped first original fabric Two first side gears, a pair of first pinion gears having a rotation axis perpendicular to the rotation axis of the two first side gears, and meshing with each first side gear, and a pair of first pinion gears rotatably A first pinion shaft to support A first differential shaft and a first drive shaft connected to the first pinion shaft of the first differential device, and each first feed shaft is connected to a corresponding first side gear. The laminating apparatus is characterized in that the first pinion shaft of the first differential device is revolved by rotation of the first drive shaft.

  According to such a form, since the difference in angular velocity of each first feed shaft on which the corresponding roll-shaped first original fabric is set can be allowed, the difference in the diameter of each roll-shaped first original fabric is different. Even in the case where there is, the tension of each first web can be suitably controlled. For this reason, in the first web supply unit having two first feeding shafts arranged coaxially with each other, each of the roll-shaped first original fabrics can withstand practical use capable of simultaneously feeding webs from the respective original fabrics. To obtain a laminating apparatus.

  Preferably, one first web fed from the first web supply unit and one second web fed from the second web supply unit overlap at the nip roller, and the first web supply unit A normal path for guiding the other first web to be fed and the other second web fed from the second web supply unit so as to overlap each other in the nip roller, and the first web supply unit The one first web and the other second web fed from the second web supply unit overlap with each other in a nip roller, and the other first web fed from the first web supply unit and the A crossing path that guides the second web fed from the second web feeding unit so as to overlap the nip roller. If such a form is adopted, it is possible to realize a combination of two types of the first web and the second web without exchanging the positions of the two first raw fabrics. Can be reduced.

  For example, the crossing path includes a first twisting roller that twists the one first web fed from the first web feeding unit toward the other first web fed from the first web feeding unit. The first web supply includes the one return twist roller that returns the twist of the one first web performed by the one twist roller, and the other first web fed from the first web supply unit. A second twist roller that twists toward the one first web fed from the section, and another return twist roller that returns the twist of the other first web performed by the other twist roller. According to such a form, the crossing path which can convey the 1st web stably can be implement | achieved with a simple mechanism.

  For example, in the first web supply unit, the two first feeding shafts of the first web supply unit each have a hollow space, and the two first side gears of the first differential device are: Each of the first drive shafts may extend through a hollow space of the two first feed shafts and a hollow space of the two side gears of the first differential gear. .

  Alternatively, in the first web supply unit, one of the two first feeding shafts of the first web supply unit has a hollow space, and the first differential device is configured to A first side gear that is disposed on the opposite side of the other first feeding shaft with respect to one feeding shaft and that is on the one first feeding shaft side of the two side gears of the first differential. A hollow space and connected to the one first feeding shaft, the other first feeding shaft is a hollow space of the one first feeding shaft and the first first feeding shaft. It may extend through the hollow space of the first side gear to which the feed shaft is connected, and may be connected to the other first side gear of the first differential device.

  In the present invention, the mode of feeding two webs from the second web supply unit is not particularly limited. For example, the second web supply unit is configured to feed the second web from two roll-shaped second original fabrics, and the second web supply unit is configured to supply a roll-shaped second original fabric. Are set, and each of the second side gears has two second feeding shafts arranged coaxially with each other, two second side gears, and a rotation axis orthogonal to the rotation axis of the two second side gears. A second differential device having a pair of meshing second pinion gears and a second pinion shaft rotatably supporting the pair of second pinion gears, and connected to the second pinion shaft of the second differential device Each of the second feed shafts is connected to a corresponding second side gear, and the second pinion shaft of the second differential device is connected to the second drive shaft. It may be revolved by rotation . According to such an aspect, since the difference in angular velocity of each second feed shaft on which the corresponding roll-shaped second original fabric is set can be allowed, the difference in the diameter of each roll-shaped second original fabric is different. Even in the case where there is, the tension of each second web can be suitably controlled. For this reason, the first web supply unit having two first feeding shafts arranged coaxially with each other, each of which the roll-shaped first original fabric is set, and each other, which is coaxial with each other, each of which the roll-shaped second original fabric is set In each of the second web supply units having two second feeding shafts arranged in the above, a laminating apparatus capable of simultaneously feeding the web from each original fabric can be realized.

  For example, in the second web supply unit, the two second feeding shafts of the second web supply unit each have a hollow space, and the two second side gears of the second differential device are: Each of the second drive shafts may extend through the hollow space of the two second feed shafts and the hollow space of the two side gears of the second differential device. .

  Alternatively, in the second web supply unit, one of the two second feeding shafts of the second web supply unit has a hollow space, and the second differential device is configured to The second side gear is disposed on the opposite side of the other second feeding shaft with respect to the second feeding shaft, and of the two side gears of the second differential device, the second side gear on the one second feeding shaft side A hollow space and connected to the one second feed shaft, the other second feed shaft being a hollow space of the one second feed shaft and the one second feed shaft. It may extend through a hollow space of the second side gear to which the feed shaft is connected, and may be connected to the other second side gear of the second differential device.

  According to the present invention, a difference in the diameter of each roll-shaped first original fabric exists because the angular velocity difference of each first feed shaft on which the corresponding roll-shaped first original fabric is set can be allowed. Even in this case, the tension of each first web can be suitably controlled. For this reason, in the first web supply unit having two first feeding shafts arranged coaxially with each other, each of the roll-shaped first original fabrics can withstand practical use capable of simultaneously feeding webs from the respective original fabrics. To obtain a laminating apparatus.

It is a schematic side view which shows the laminating apparatus in the 1st Embodiment of this invention. It is a schematic front view which shows the 1st web supply part of the lamination apparatus of FIG. It is a schematic front view which shows the 2nd web supply part of the lamination apparatus of FIG. It is a schematic front view which shows the other example of the 1st web supply part of the lamination apparatus of FIG. It is a schematic front view which shows the other example of the 2nd web supply part of the lamination apparatus of FIG. It is a schematic front view which shows the further another example of the 2nd web supply part of the laminating apparatus of FIG. It is a schematic side view which shows the laminating apparatus in the 2nd Embodiment of this invention. It is the elements on larger scale which show the crossing path | route in the lamination apparatus of FIG. 7, (a) shows a schematic side view, (b) shows a schematic plan view. It is a schematic side view which shows an example of a structure of the conventional laminating apparatus. 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 when two original fabrics from which a diameter differs are set to the same feed shaft.

<< First Embodiment >>
≪Configuration≫
The first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing a laminating apparatus according to an embodiment of the present invention. FIG. 2 is a schematic front view showing the first web supply unit 10 of the laminating apparatus of FIG. FIG. 3 is a schematic front view showing the second web supply unit 20 of the laminating apparatus of FIG. In the present embodiment, the laminating apparatus is configured as a so-called dry laminating type laminating apparatus. However, the present invention is not limited to such an example, and may be configured as, for example, a so-called wet laminating system, thermal laminating system, hot melt laminating system, or extrusion laminating laminating apparatus.

  As shown in FIG. 1 thru | or FIG. 3, the laminating apparatus of this Embodiment is the 1st web supply part 10 which each feeds the 1st web 111 from two roll-shaped 1st web 110, and two rolls. A second web supply unit 20 that feeds the second web 211 from the second raw fabric 210 in a shape.

  First, the first web supply unit 10 will be described with reference to FIG. As shown in FIG. 2, the first web supply unit 10 in the present embodiment includes two first feed shafts 121a and 121b each having a hollow space in which roll-shaped first original fabrics 110a and 110b are respectively set. A first differential device 122 that connects the two first feed shafts 121a and 121b to each other, and a first drive shaft that rotates each of the first feed shafts 121a and 121b via the first differential device 122 128.

  Each of the first feed shafts 121a and 121b can be set with roll-shaped first original fabrics 110a and 110b having various widths. As the first original fabrics 110a and 110b, for example, paper, a resin film such as polypropylene, polyethylene, or polyester, a metal foil such as an aluminum foil or a copper foil, or a laminate obtained by depositing a metal foil on these resin films A film or the like can be used.

  As shown in FIG. 2, the two first feeding shafts 121 a and 121 b are arranged coaxially and are connected to first side gears 123 a and 123 b having a hollow space of the first differential device 122, respectively. Thereby, each 1st side gear 123a and 123b, each 1st feeding shaft 121a and 121b, and each 1st original fabric 110a and 110b can rotate integrally, respectively.

  The first differential device 122 has first side gears 123a and 123b connected to the first feed shafts 121a and 121b, respectively, and a rotation axis orthogonal to the rotation axis of the first side gears 123a and 123b. A pair of first pinion gears 124 that mesh with the first side gears 123a and 123b, and a first pinion shaft 125 that rotatably supports the pair of first pinion gears 124 are provided.

  In the example of FIG. 2, the first side gears 123 a and 123 b and the pair of first pinion gears 124 are configured as bevel gears, and the first side gears 123 a and 123 b mesh with each other orthogonally to the pair of first pinion gears 124. Yes. With such a configuration, the pair of first pinion gears 124 absorbs a rotational speed difference (angular speed difference) between the first side gear 123a and the first side gear 123b.

  The first drive shaft 128 extends through the hollow space of the two first feed shafts 121a and 121b and the hollow space of the two first side gears 123a and 123b. The first drive shaft 128 is connected to the first pinion shaft 125 so that the axis lines thereof are orthogonal to each other. The initial rotational speed of the first drive shaft 128 is such that the rotational speed of the first feed shafts 121a and 121b is relative to the rotational speed of the nip roller 30 (drive roller 32) in order to apply a slight tension to the first webs 111a and 111b. It is determined to be relatively slow.

  Next, the second web supply unit 20 will be described with reference to FIG. The second web supply unit 20 in the present embodiment is configured in substantially the same manner as the first web supply unit 10. That is, as shown in FIG. 3, the second web supply unit 20 includes two second feed shafts 221 a and 221 b each having a hollow space in which roll-shaped second original fabrics 210 a and 210 b are respectively set, and 2 A second differential 222 that connects the two second feed shafts 221a and 221b to each other, a second drive shaft 228 that rotates each of the second feed shafts 221a and 221b via the second differential 222, Consists of.

  Each of the second feeding shafts 221a and 221b can be set with roll-shaped second original fabrics 210a and 210b having various widths. As this 2nd original fabric 210a and 210b, although depending also on the combination with 1st original fabric 110a and 110b, for example, a resin film such as paper, polypropylene, polyethylene or polyester, an aluminum foil or a copper foil, etc. A metal foil or a laminated film obtained by vapor-depositing a metal foil on these resin films can be used.

  As shown in FIG. 3, the two second feeding shafts 221 a and 221 b are arranged coaxially and connected to second side gears 223 a and 223 b having a hollow space of the second differential device 222, respectively. Thereby, each 2nd side gear 223a and 223b, each 2nd feed shaft 221a and 221b, and each 2nd original fabric 210a and 210b can rotate integrally, respectively.

  The second differential device 222 includes second side gears 223a and 223b connected to the second feed shafts 221a and 221b, respectively, and a rotation axis orthogonal to the rotation axis of the second side gears 223a and 223b. A pair of second pinion gears 224 that mesh with the second side gears 223a and 223b, and a second pinion shaft 225 that rotatably supports the pair of second pinion gears 224 are provided.

  In the example of FIG. 3, the second side gears 223 a and 223 b and the pair of second pinion gears 224 are configured as bevel gears, and the second side gears 223 a and 223 b mesh with each other orthogonally to the pair of second pinion gears 224. Yes. With such a configuration, the pair of second pinion gears 224 absorbs a rotational speed difference (angular speed difference) between the second side gear 223a and the second side gear 223b.

  The second drive shaft 228 extends through the hollow space of the two second feed shafts 221a and 221b and the hollow space of the two second side gears 223a and 223b. The second drive shaft 228 is connected to the second pinion shaft 225 so that the axis lines thereof are orthogonal to each other. The initial rotational speed of the second drive shaft 228 is such that the rotational speed of the second feed shafts 221a and 221b is relative to the rotational speed of the nip roller 30 (drive roller 32) in order to apply a slight tension to the second webs 211a and 211b. It is determined to be relatively slow.

  Returning to FIG. 1, the laminating apparatus of the present embodiment includes an application unit 41 that applies adhesive to the second webs 211 a and 211 b fed from the second web supply unit 20, and the second web 211 a and And a drying unit 45 for drying the adhesive 211b. In addition, as the application unit 41 and the drying unit 45, various forms generally used in a dry laminating type laminating apparatus can be adopted, and examples thereof will be described below.

  As shown in FIG. 1, the application part 41 of this Embodiment apply | coats an adhesive agent from the application | coating head 42 to the width direction of the 2nd webs 211a and 211b substantially equally. As this adhesive, a known polyurethane adhesive generally used in a dry laminating type laminating apparatus can be used. On the other hand, the drying unit 45 is configured to apply hot air evenly to the second webs 211a and 211b to which the adhesive is applied to dry the organic solvent contained in the adhesive.

  Moreover, as shown in FIG. 1, the laminating apparatus of this Embodiment is the 2nd fed from the 2nd web supply part 20 to each 1st web 111a and 111b fed from the 1st web supply part 10. As shown in FIG. While overlapping the webs 211a and 211b, respectively, the nip roller 30 that conveys the overlapped first webs 111a and 111b and the second webs 211a and 211b in common, and each overlap conveyed from the nip roller 30 And a pair of winding rollers 48 for winding the first webs 111a and 111b and the second webs 211a and 211b, respectively.

  The nip roller 30 includes a driving roller 32 that is rotationally driven, and the first webs 111 a and 111 b and the second web 211 a that are disposed so as to face the driving roller 32 and overlap each other. And a pressure roller 33 that presses 211b while heating. The driving roller 32 and the pressure roller 33 are supported so as to be rotatable at right angles and horizontally with respect to the conveyance direction of the web 11. Further, the drive roller 32 is rotationally driven by a motor.

≪Action ・ Effect≫
Next, the operation of the present embodiment having such a configuration will be described.

  When the first drive shaft 128 is rotationally driven from the state shown in FIG. 2, the first pinion shaft 125 of the first differential device 122 connected to the first drive shaft 128 rotates. The rotation of the first pinion shaft 125 is equally transmitted from the pair of first pinion gears 124 to the first feed shafts 121a and 121b via the first side gears 123a and 123b, and the first feed shafts 121a and 121b. Begin to rotate at equal angular velocities (this rotation is called "revolution of the differential"). Accordingly, the first webs 111a and 111b start to be fed from the first feeding shafts 121a and 121b. The first webs 111a and 111b to be fed are conveyed while being held in common by the nip roller 30 (together with the second webs 211a and 211b), as will be described later.

Here, a roll-shaped with a diameter r _a is a (relatively large diameter is assumed that the diameter r _b of diameter r _a and rolled first raw 110b of the rolled first raw 110a is different first raw and 110a, and 110b of the first original fabric roll having a diameter _{r b} is relatively small). In this case, if the first feed shaft 121a and 121b continues to rotate at a constant speed, towards the feed speed _{V a} of the first web 111a it is fed from a large first raw 110a of diameter _{r a} , faster than the feed speed _{V b} of the first web 111b fed from a small first raw 110b diameters _{r b.} Then, the tension of the first web 111a becomes weak due to excessive feeding, while the tension of the first web 111b becomes strong because of insufficient feeding. This strong tension acting on the first web 111b pulls the first web 111b and tries to rotate the first feeding shaft 121b quickly. When the rotational speed of the first feed shaft 121b is increased as much as possible, a speed difference is generated between the rotational speed of the first side gear 123b and the rotational speed of the first side gear 123a, and the pair of first pinion gears 124 is Rotation by the side gear 123b causes an action such that the rotation speed of the first side gear 123a, that is, the rotation speed of the first feeding shaft 121a is slower (this rotation is called “rotation of the differential device”). . As a result, excessive tension of the first web 111b is suppressed, and excessive feeding of the first web 111a is suppressed, so that necessary tension of the first web 111a is maintained. In this way, the first webs 111a and 111b are stably fed from the first web supply unit 10.

  On the other hand, as the second differential device 222 acts in the same manner as the first differential device 122, the second webs 211 a and 211 b are also supplied from the second web supply unit 20 as the second drive shaft 228 rotates. Is fed stably. The fed second webs 211a and 211b are each coated with an adhesive by the coating unit 41, and then dried by the drying unit 45 on the second webs 211a and 211b.

  In the nip roller 30, the second webs 211 a and 211 b fed from the second web feeding unit 20 are superimposed on the first webs 111 a and 111 b fed from the first web feeding unit 10, respectively. The overlapped first webs 111a and 111b and the second webs 211a and 211b are sandwiched and pressed in common while being heated. Each of the first webs 111a and 111b and the second webs 211a and 211b that have been pressure-bonded is wound by a winding roller 48, respectively.

  As described above, according to the present embodiment, the difference in angular velocity between the first feeding shafts 121a and 121b on which the corresponding roll-shaped first original fabrics 110a and 110b are set can be allowed. Even if there is a difference in the diameters of the roll-shaped first raw fabrics 110a and 110b, the tension of the first webs 111a and 111b can be suitably controlled. For this reason, in the 1st web supply part 10 which has the two 1st feed shafts 121a and 121b arranged coaxially mutually where roll-shaped 1st original fabric 110a and 110b are set, respectively, each 1st original fabric 110a And 110b, the laminating apparatus that can feed the first webs 111a and 111b at the same time can be realized.

  Further, according to the present embodiment, the difference in angular velocity between the respective second feed shafts 221a and 221b on which the corresponding roll-shaped second original fabrics 210a and 210b are set can be allowed. Even when there is a difference in the diameters of the second original fabrics 210a and 210b, the tension of each of the second webs 211a and 211b can be suitably controlled. Therefore, the first web supply unit 10 having the two first feeding shafts 121a and 121b arranged coaxially with each other on which the roll-shaped first raw fabrics 110a and 110b are respectively set, and the roll-shaped second web In each of the second web supply units 20 having two second feeding shafts 221a and 221b arranged coaxially with each other, each of the original fabrics 210a and 210b is set, a laminate capable of simultaneously feeding webs from the respective original fabrics. A device can be realized.

≪Modification≫
In the above embodiment, as shown in FIG. 2, in the first web supply unit 10, the first drive shaft 128 includes the hollow space of the two first feed shafts 121 a and 121 b and the two first side gears 123 a and Although the example extended through the hollow space of 123b was shown, this invention is not limited to such an example. FIG. 4 shows another configuration example of the first web supply unit 10. In the example illustrated in FIG. 4, one of the two first feeding shafts 121 a and 121 b of the first web supply unit 10 has a hollow space, and the first differential device 122 It arrange | positions with respect to the feed shaft 121a on the opposite side of the other 1st feed shaft 121b. Of the two first side gears 123a and 123b of the first differential device 122, the first side gear 123a on the first feed shaft 121a side has a hollow space, and one first feed shaft 121a. It is connected to the. The other first feeding shaft 121b extends through the hollow space of the first feeding shaft 121a and the hollow space of the first side gear 123a to which the first feeding shaft 121a is connected. It is connected to the other first side gear 123b of one differential device 122.

  Furthermore, in the present embodiment, the other first side gear 123b also has a hollow space. The other first feeding shaft 121b extends further to the other through the hollow space of the other first side gear 123b of the first differential device 122, and to the other than the other first side gear 123b. The extended portion is rotatably supported by a radial bearing 126a. For this reason, the other first feeding shaft 121b is stably supported.

  A radial bearing 126b is also fitted into the hollow space of one first feed shaft 121a, and one first feed shaft 121a is stably supported by the other first feed shaft 121b. Yes.

  The first drive shaft 128 is coaxial with the first feed shafts 121a and 121b. The first drive shaft 128 is connected to the pair of first pinion shafts 125 via a pair of connection members 129 so that the axis lines thereof are orthogonal to each other. More specifically, the connection member 129 has a shape that surrounds the outer edge of the first differential device 122, and is connected to the first drive shaft 128 at one end and to the first pinion shaft 125 at the other end. It is connected.

  According to such a configuration, the other first feed shaft 121b that is farther from the first differential device 122 can be configured as a solid shaft. The strength can be increased, and as a result, the first web 111b can be stably fed from the other first feeding shaft 121b.

  In the above embodiment, as shown in FIG. 3, in the second web supply unit 20, the second drive shaft 228 includes the hollow space of the two second feed shafts 221a and 221b and the two second side gears 223a and Although the example extended through the hollow space of 223b was shown, this invention is not limited to such an example. FIG. 5 shows another configuration example of the second web supply unit 20. The second web supply unit 20 shown in FIG. 5 is configured in substantially the same manner as the first web supply unit 10 shown in FIG. That is, in the example shown in FIG. 5, one of the two second feeding shafts 221a and 221b of the second web supply unit 20 has a hollow space, and the second differential device 222 The second feed shaft 221a is disposed on the opposite side of the other second feed shaft 221b. Of the two second side gears 223a and 223b of the second differential device 222, the second side gear 223a on the second feed shaft 221a side has a hollow space, and one second feed shaft 221a. It is connected to the. The other second feed shaft 221b extends through the hollow space of one second feed shaft 221a and the hollow space of the second side gear 223a to which the second feed shaft 221a is connected. The second differential gear 222 is connected to the other second side gear 223b.

  Furthermore, in the present embodiment, the other second side gear 223b also has a hollow space. The other second feeding shaft 221b extends further to the other through the hollow space of the other second side gear 223b of the second differential device 222, and to the other than the other second side gear 223b. The extended portion is rotatably supported by a radial bearing 226a. For this reason, the other second feeding shaft 221b is stably supported.

  Further, a radial bearing 226b is also fitted into the hollow space of one second feed shaft 221a, and one second feed shaft 221a is stably supported by the other second feed shaft 221b. Yes.

  The second drive shaft 228 is coaxial with the second feed shafts 221a and 221b. The second drive shaft 228 is connected to the pair of second pinion shafts 225 via a pair of connection members 229 so that the axis lines thereof are orthogonal to each other. More specifically, the connection member 229 has a shape that goes around the outer edge of the second differential device 222, and is connected to the second drive shaft 228 at one end and to the second pinion shaft 225 at the other end. It is connected.

  According to such a configuration, the other second feed shaft 221b that is far from the second differential device 222 can be configured as a solid shaft, so that the other second feed shaft 221b The strength can be increased, and as a result, the second web 211b can be stably fed from the other second feeding shaft 221b.

  Moreover, in the above embodiment, as shown in FIG. 3, in the second web supply unit 20, the example in which the two second feeding shafts 221a and 221b are arranged coaxially was shown. It is not limited to such an example. FIG. 6 shows still another configuration example of the second web supply unit. In the example illustrated in FIG. 6, the second web supply unit 20 includes two second feed shafts 221 a and 221 b that are different from the same axis on which the roll-shaped second original fabrics 210 a and 210 b are set, respectively, There are two second drive shafts 228a and 228b for driving the feed shafts 221a and 221b. In this case, the tension of the second webs 211a and 211b fed from the second feeding shafts 221a and 221b adjusts the rotational speed of the corresponding second drive shafts 228a and 228b with respect to the rotational speed of the nip roller 30. It is controlled by that.

  In the above embodiment, as shown in FIG. 1, the application unit 41 has applied the adhesive in the width direction of the second webs 211 a and 211 b from the application head 42. The invention is not limited to such examples. An application head corresponding to each of the second webs 211a and 211b may be provided, and different adhesives may be applied from each application head.

  In the laminating apparatus described above, the first webs 111a and 111b fed from the first web supply unit 10 are nipped and conveyed between the first web supply unit 10 and the nip roller 30. Preferably, an additional nip roller is further provided. In this case, in the first additional nip roller, the tension of the first webs 111a and 111b fed from the first web supply unit 10 can be suitably controlled, so that the first webs 111a and 111b can be further stabilized. Can be fed. Similarly, in the laminating apparatus described above, the second webs 211a and 211b fed from the second web supply unit 20 are nipped and conveyed between the second web supply unit 20 and the nip roller 30 in common. Preferably, two additional nip rollers are further provided. In this case, since the tension of the second webs 211a and 211b fed from the second web supply unit 20 can be suitably controlled in the second additional nip roller, the second webs 211a and 211b can be further stabilized. Can be fed.

<< Second Embodiment >>
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 7 is a schematic side view showing a laminating apparatus according to the second embodiment of the present invention. In FIG. 7, in the laminating apparatus, one first web 111 a fed from the first web supply unit 10 and one second web 211 a fed from the second web supply unit 20 overlap at the nip roller 30. A normal path 61 for guiding the other first web 111b fed from the first web supply unit 10 and the other second web 211b fed from the second web supply unit 20 to overlap each other in the nip roller 30; One first web 111 a fed from the first web supply unit 10 and the other second web 211 b fed from the second web supply unit 20 overlap at the nip roller 30, and are fed from the first web supply unit 10. The other first web 111b to be fed and one second web 211a fed from the second web supply unit 20 are in the nip roller 30. A guide to cross the path 63 so as to overlap, and further comprising a. Other configurations are substantially the same as those of the first embodiment. In FIG. 7, the same parts as those of the first embodiment shown in FIG.

  First, the normal path 61 will be described in detail. As shown in FIG. 7, in the normal path 61, the first webs 111 a and 111 b fed from the first web supply unit 10 are guided to the nip roller 30 in parallel with each other via a guide roller 64. It has become.

  On the other hand, the second webs 211a and 211b fed from the second web supply unit 20 are guided to the nip roller 30 in parallel with each other via a plurality of guide rollers 62 as shown in FIG. ing.

  Accordingly, the first webs 111a and 111b fed from the first web supply unit 10 are guided to the nip roller 30 in parallel with each other, and the second webs 211a and 211b fed from the second web supply unit 20 are The first web 111a and the second web 211a are overlapped with each other, and the other first web 111b and the other second web 211b are overlapped with each other. It will be.

  Next, the intersection path 63 will be described with reference to FIGS. 8 (a) and 8 (b). 8 is a partially enlarged view showing a crossing path in the laminating apparatus of FIG. 7, (a) shows a schematic side view, and (b) shows a schematic plan view. As shown in FIG. 8B, in the intersection path 63, the first webs 111 a and 111 b fed from the first web supply unit 10 pass through a plurality of twist rollers 65 to 68 and a plurality of guide rollers 69. Thus, they are guided to the nip roller 30 so as to cross each other.

  Specifically, as shown in FIGS. 8A and 8B, the first web 111 a fed from the first web supply unit 10 is supplied to the intersection path 63 with the first web supply unit 10. A first twisting roller 65 that twists toward the other first web 111b fed from the side, a one return twisting roller 66 that returns the twisting of the first web 111a performed by the one twisting roller 65, and a first web The other first web 111b fed from the supply unit 10 is twisted by the other twist roller 67 that twists toward the first web 111a fed from the first web supply unit 10 and the other twist roller 67. The other reverse twisting roller 68 for returning the twist of the other first web 111b is included.

  In the present embodiment, more specifically, the one-twisting roller 65 feeds one first web 111a fed from the first web feeding unit 10 in the first plane from the first web feeding unit 10. The other first web 111b to be fed is twisted. On the other hand, the return twisting roller 66 returns the twist of the one first web 111a performed by the one twisting roller 65, and the one first web 111a is moved in a second plane parallel to the first plane. It comes to carry out. The other twisting roller 67 moves the other first web 111b fed from the first web supply unit 10 in the third plane to the side of the first web 111a fed from the first web supply unit 10. It is designed to twist. The other return twisting roller 68 returns the twist of the other first web 111b performed by the other twisting roller 67, and the other first web 111b is moved in a fourth plane parallel to the third plane. It comes to carry out.

  As shown in FIGS. 8A and 8B, each of the twist rollers 65 to 68 is a taper roller known per se that tapers from the base end side to the front end side in the width direction of the twist rollers 65 to 68. Constructed and supported horizontally. On the other hand, the twisting roller 65 is arranged such that the tip end side of its own taper faces the upstream side in the transport direction of the first web 111a. On the other hand, the return twisting roller 66 corresponds to a state in which the one twisting roller 65 is reversed in the horizontal plane, and is arranged so that the tip end side of its own taper is directed to the downstream side in the conveyance direction of the first web 111a. . The other twisting roller 67 is arranged such that the tip end side of its own taper faces the upstream side in the transport direction of the other first web 111b. The other return twisting roller 68 corresponds to a state in which the other twisting roller 67 is reversed in the horizontal plane, and is arranged so that the tip end side of its own taper faces the downstream side in the transport direction of the other first web 111b. .

  Further, as shown in FIGS. 7 and 8A and 8B, the intersection path 63 includes a plurality of guide rollers 69 for guiding the first webs 111a and 111b, and the plurality of guide rollers. 69, the first webs 111 a and 111 b are appropriately guided to the nip roller 30.

  Accordingly, as shown in FIGS. 8A and 8B, in the crossing path 63, one first web 111 a fed from the first web supply unit 10 is fed by the first twist roller 65 to the first web supply unit. 10 is twisted toward the other first web 111 b fed from 10, and the twist of the first web 111 a performed by the one twist roller 65 is returned by the one return twist roller 66. Similarly, the other first web 111b fed from the first web supply unit 10 is twisted to the side of the first web 111a fed from the first web supply unit 10 by the other twisting roller 67, The twist of the other first web 111 b performed by the other twist roller 67 is returned by the other return twist roller 68. Thereby, in the nip roller 30, compared with the normal path | route 61, the position of one 1st web 111a and the other 1st web 111b can be replaced. For this reason, in the nip roller 30, one first web 111a and the other second web 211b overlap, and the other first web 111b and one second web 211a overlap.

  Since the operation of the entire laminating apparatus of the present embodiment including the normal path 61 and the crossing path 63 is substantially the same as that of the laminating apparatus of the first embodiment, detailed description thereof is omitted.

  As described above, according to the present embodiment, the difference in angular velocity between the first feeding shafts 121a and 121b on which the corresponding roll-shaped first original fabrics 110a and 110b are set can be allowed. Even when there is a difference in the diameters of the first raw fabrics 110a and 110b, the tensions of the first webs 111a and 111b can be suitably controlled. For this reason, in the 1st web supply part 10 which has two 1st feed shafts 121a and 121b arranged coaxially mutually with which roll-shaped 1st original fabrics 110a and 110b are set, respectively, each 1st original fabric 110a and A laminating apparatus capable of withstanding practical use capable of simultaneously feeding the first webs 111a and 111b from 110b can be realized.

  Further, according to the present embodiment, the difference in angular velocity between the respective second feed shafts 221a and 221b on which the corresponding roll-shaped second original fabrics 210a and 210b are set can be allowed. Even when there is a difference in the diameters of the second original fabrics 210a and 210b, the tension of each of the second webs 211a and 211b can be suitably controlled. Therefore, the first web supply unit 10 having the two first feeding shafts 121a and 121b arranged coaxially with each other on which the roll-shaped first raw fabrics 110a and 110b are respectively set, and the roll-shaped second web In each of the second web supply units 20 having two second feeding shafts 221a and 221b arranged coaxially with each other, each of the original fabrics 210a and 210b is set, a laminate capable of simultaneously feeding webs from the respective original fabrics. A device can be realized.

  In addition, according to the present embodiment, the two first webs 111a, the two first webs 110a and 110b, or the two second webs 210a and 210b without changing the positions of each other. Since the combination of 111b and the 2nd webs 211a and 211b is realizable, the burden on an operator can be reduced.

  Further, according to this embodiment, the first webs 111a and 111b can be stably conveyed using the one twist roller 65, the one return twist roller 66, the other twist roller 67, and the other return twist roller 68. The path 63 can be realized with a simple mechanism.

In addition, although several embodiment of this invention and those modification examples have been demonstrated, naturally, it is also possible to apply combining several embodiment and those modification examples suitably.

10 1st web supply part 110,110a, 110b 1st original fabric 121 1st feed shaft 121
122 1st differential gear 123, 123a, 123b 1st side gear 123
124 1st pinion gear 125 1st pinion shaft 128 1st drive shaft 111, 111a, 111b 1st web 20 2nd web supply part 210 2nd original fabric 211 2nd web 221 2nd feed shaft 222 2nd differential 223 Second side gear 224 Second pinion gear 225 Second pinion shaft 228 Second drive shaft 30 Nip roller 32 Drive roller 33 Pressure roller 501 First web supply unit 510 First raw fabric 521 First feed shaft 511 First web 602 Second web Supply unit 610 Second raw fabric 611 Second web 621 Second feed shaft 530 Nip roller 61 Normal path 63 Cross path 65 One twist roller 66 One return twist roller 67 The other twist roller 68 The other return twist roller

Claims (8)

A first web supply unit for feeding a first web from each of two roll-shaped first webs;
A second web supply section for feeding two second webs;
While overlapping each second web fed from the second feeding unit on each first web fed from the first web supply unit, each of the stacked first webs and second webs is shared. A nip roller for nipping and conveying;
With
The first web supply unit includes:
Two first feed shafts arranged coaxially with each other, each set with a roll-shaped first raw fabric,
Two first side gears, a pair of first pinion gears having a rotation axis orthogonal to the rotation axes of the two first side gears and meshing with each first side gear, and a pair of first pinion gears are rotatably supported. A first differential having a first pinion shaft;
A first drive shaft connected to the first pinion shaft of the first differential,
Have
Each first feed shaft is connected to a corresponding first side gear,
The laminating apparatus, wherein the first pinion shaft of the first differential device is revolved by rotation of the first drive shaft. One first web fed from the first web supply unit and one second web fed from the second web supply unit overlap at the nip roller, and are fed from the first web supply unit. A normal path for guiding the other first web and the other second web fed from the second web supply unit so as to overlap each other in the nip roller;
The one first web fed from the first web supply unit and the other second web fed from the second web supply unit overlap at a nip roller, and are fed from the first web supply unit. An intersecting path for guiding the other second web and the one second web fed from the second web supply unit so as to overlap each other in the nip roller;
The laminating apparatus according to claim 1, further comprising: The intersection path is
One twisting roller that twists the one first web fed from the first web supply unit toward the other first web side fed from the first web supply unit;
A one-turn twisting roller that returns the twist of the one first web made by the one-twisting roller;
The other twist roller that twists the other first web fed from the first web supply unit toward the one first web side fed from the first web supply unit;
The other return twist roller for returning the twist of the other first web performed by the other twist roller;
The laminating apparatus according to claim 2, further comprising: The two first feeding shafts of the first web supply unit each have a hollow space,
The two first side gears of the first differential device each have a hollow space;
4. The first drive shaft according to claim 1, wherein the first drive shaft extends through a hollow space of the two first feed shafts and a hollow space of the two side gears of the second differential device. The laminating apparatus in any one. One of the two first feeding shafts of the first web supply unit has a hollow space,
The first differential is arranged on the opposite side of the other first feeding shaft with respect to the one first feeding shaft,
Of the two side gears of the first differential, the first side gear on the one first feed shaft side has a hollow space and is connected to the one first feed shaft,
The other first feeding shaft extends through the hollow space of the one first feeding shaft and the hollow space of the first side gear to which the one first feeding shaft is connected. The laminating apparatus according to any one of claims 1 to 3, wherein the laminating apparatus is connected to the other first side gear of the moving apparatus. The second web supply unit is configured to feed the second web from two roll-shaped second original fabrics,
The second web supply unit is
Two second feed shafts arranged coaxially with each other, each set with a roll-shaped second raw fabric,
Two second side gears, a pair of second pinion gears having a rotation axis orthogonal to the rotation axis of the two second side gears and meshing with each second side gear, and a pair of second pinion gears are rotatably supported. A second differential having a second pinion shaft;
A second drive shaft connected to the second pinion shaft of the second differential,
Have
Each second feed shaft is connected to a corresponding second side gear,
The laminating apparatus according to any one of claims 1 to 5, wherein the second pinion shaft of the second differential device is revolved by rotation of the second drive shaft. The two second feeding shafts of the second web supply unit each have a hollow space,
The two second side gears of the second differential device each have a hollow space,
The said 2nd drive shaft is extended through the hollow space of two said 2nd feeding shafts, and the hollow space of said two side gears of said 2nd differential gear, It is characterized by the above-mentioned. Laminating equipment. One of the two second feeding shafts of the second web supply unit has a hollow space,
The second differential device is disposed on the opposite side of the other second feed shaft with respect to the one second feed shaft,
Of the two side gears of the second differential, the second side gear on the one second feed shaft side has a hollow space and is connected to the one second feed shaft,
The other second feeding shaft extends through the hollow space of the one second feeding shaft and the hollow space of the second side gear to which the one second feeding shaft is connected. The laminating apparatus according to claim 6, wherein the laminating apparatus is connected to the other second side gear of the moving apparatus.

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