JP2021172461A - Sheet original material feeder - Google Patents

Abstract

To surely change rolls.SOLUTION: A sheet original material feeder 6 comprises a supporting device 8 for supporting a first original material roll R1 and a second original material roll R2; and a joint device 9 for joining part of a first sheet original material OS1 relating to the first original material roll R1, and an end portion OSa of a second sheet original material OS2 relating to the second original material roll R2. The joint device 9 comprises an end portion holding part 24 for holding the end portion OSa of the second sheet original material OS2, and a first pressing member 22a for pressing the part of a first sheet original material OS1 to the end portion OSa of the second sheet original material OS2.SELECTED DRAWING: Figure 1

Description

The present invention relates to a sheet base material supply device that supplies a sheet base material for a protective sheet to be stacked on a glass plate.

As is well known, a glass plate package is often used as a form for transporting various glass plates such as a glass substrate for a display and a glass substrate for a solar cell. The glass plate packaging body is manufactured by cutting the sheet base material drawn from the base material roll to form a rectangular protective sheet, and loading the glass plate on which the protective sheets are stacked on a pallet (for example, a patent). Reference 1).

In order to efficiently manufacture the glass plate package, it is necessary to efficiently replace the base material roll. For example, in Patent Document 2, two original material rolls (roll portions) formed by winding a resin sheet are held, and the resin sheet in one original material roll (hereinafter referred to as "first original material roll"). And a supply device capable of adhering the resin sheet in the other base material roll (hereinafter referred to as "second base material roll") are disclosed.

The supply device includes a holding member that rotatably holds each base material roll, and an adhesive device (adhesive portion) for adhering the resin sheets of each base material roll to each other.

The adhesive device of the supply device presses the resin sheet in use in the first material roll against the adhesive layer provided at the end (rolling end portion) of the resin sheet in the second material roll, so that the resin sheets are pressed against each other. Glue.

Japanese Unexamined Patent Publication No. 2014-114165 JP-A-2017-121985

In the conventional supply device, the holding member rotatably holds the second material roll without holding the end portion of the resin sheet related to the second material roll. Therefore, when the adhesive device adheres the resin sheet, the resin sheet of the second base material roll hangs down, and the adhesive layer formed at the end thereof adheres to other constituent members of the supply device. There was a risk of hindering the replacement work of the material roll.

The present invention has been made in view of the above circumstances, and it is a technical subject to ensure roll exchange.

The present invention is for solving the above-mentioned problems, and is a sheet base material supply device for supplying a sheet base material for a protective sheet to be stacked on a glass plate from a base material roll, wherein the base material roll is a first material roll. The first original material roll and the second original material roll including the first original material roll in which one sheet original material is wound and the second original material roll in which the second sheet original material is wound up. A support device for supporting the roll and a joining device for joining a part of the first sheet base material and an end portion of the second sheet base material are provided, and the joining device is the second sheet base material. It is characterized by including an end holding portion for holding the end portion and a first pressing member for pressing the part of the first sheet base material against the end portion of the second sheet base material.

According to such a configuration, in the joining device, the first pressing member holds the end portion of the second sheet base material related to the second base material roll by the end holding portion, and the first pressing member relates to the first base material roll. A part of the sheet base material can be pressed against the end of the second sheet base material. As a result, it is possible to prevent the end portion of the second sheet base material from being unexpectedly pulled out and touching the constituent members of the sheet base material supply device. This makes it possible to reliably replace the first base material roll with the second base material roll.

The end holding portion may include a holding surface that attracts and holds the end portion of the second sheet base material. Thereby, the end portion of the second sheet base material can be easily and surely held and released by the end portion holding portion.

The support device includes a support for supporting the first material roll and the second material roll, and the support is such that the first sheet base material does not overlap with the second sheet base material. The support is in a first posture in which the first sheet base material can be pulled out from a single base material roll and a second posture in which the first sheet base material and the end portion of the second sheet base material are overlapped with each other. The end portion holding portion is configured so that the posture can be changed according to the rotation of the first sheet base material, and the end portion of the second sheet base material is used as the first sheet base material when the support is in the first posture. A first position for holding the support without overlapping the two, and a second position for holding the end portion of the second sheet base material in a state of being overlapped with the first sheet base material when the support is in the second posture. It may be configured so that the position can be changed with the rotation of the end holding portion.

By configuring the end holding portion so that the position can be changed as described above, the end portion of the second sheet base material can be arranged at an appropriate position according to the posture change of the support.

The end holding portion may be configured to be rotatable independently of the rotation of the support. According to such a configuration, it is possible to prevent the end holding portion from coming into contact with the second sheet base material when the remaining amount of the second base material roll becomes low and the second base material roll is replaced with another base material roll. can. In addition, it is no longer necessary to use a different end holding portion when exchanging the second original material roll with another original material roll, and the same end holding portion is used when exchanging the first original material roll and the second original material roll. It is possible to replace the second base material roll with another base material roll at the section. Therefore, the equipment cost can be reduced.

The joining device includes a second pressing member that fixes the first sheet base material to a part of the support device at a position away from the first pressing member, and is a cutting device that cuts the first sheet base material. The cutting device may include a cutting blade that cuts the first sheet base material between the first pressing member and the second pressing member.

According to such a configuration, immediately after the joining of a part of the first sheet base material and the end portion of the second sheet base material is completed, the first sheet base material is formed by the first pressing member and the second pressing member of the joining device. The first sheet base material can be cut with a cutting blade in a state where the first sheet is fixed. As a result, the joining work of the sheet base material by the joining device and the cutting work of the first sheet base material by the cutting device can be efficiently performed.

According to the present invention, roll exchange can be reliably performed.

It is a side view which shows the manufacturing apparatus of the glass plate packing body. It is a bottom view of the sheet base material supply device which concerns on the line of sight II-II of FIG. It is sectional drawing of the end part holding part. It is a flowchart which shows the roll exchange method. It is a side view which shows the posture change process of a roll exchange method. It is a side view which shows the joining process of a roll exchange method. It is a side view which shows the joining process and cutting process of a roll exchange method. It is a side view which shows one process of a roll exchange method.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

FIG. 1 shows a manufacturing apparatus for a glass plate package. The manufacturing apparatus 1 forms the protective sheet PS by cutting the sheet base materials OS1 and OS2 drawn from the base material rolls R1 and R2. Further, the manufacturing apparatus 1 superimposes the glass plate G on the protective sheet PS and loads it on the pallet P. As a result, the manufacturing apparatus 1 manufactures the glass plate package GP.

The glass plate G is formed by cutting a long glass ribbon formed by, for example, the overflow down draw method into a rectangular shape. In the overflow down draw method, molten glass is poured into an overflow groove provided in the upper part of a molded body having a substantially wedge-shaped cross section, and the molten glass overflowing from the overflow groove on both sides is flowed along the side walls on both sides of the molded body. While flowing down, the glass ribbon is continuously molded by being fused and integrated at the lower end of the molded body. The glass plate G can be manufactured not only by the overflow down draw method but also by a float method and various other molding methods.

The original material rolls R1 and R2 are configured by winding the sheet original materials OS1 and OS2 around a winding core. As the sheet base materials OS1 and OS2, for example, a foamed resin sheet composed of a resin containing polyethylene as a main component is used, but the composition is not limited to this. Glass interleaving paper may be used as the sheet base materials OS1 and OS2.

The manufacturing apparatus 1 includes a transport unit 2 for transporting the glass plate G and a packing unit 3 for packing the glass plate G in the pallet P.

The transport unit 2 is configured as a transport device including a plurality of glass holding portions 4 for moving the glass plate G. Each glass holding portion 4 can be moved three-dimensionally by a robot arm or other various moving mechanisms. Each glass holding portion 4 has a clamp mechanism 5 capable of gripping the glass plate G. The transport unit 2 grips the upper portion of the glass plate G by the clamp mechanism 5 of the glass holding unit 4, and transports the glass plate G so that one surface of the glass plate G faces in the moving direction thereof.

The packing unit 3 includes a sheet base material supply device 6 and a sheet forming device 7 that forms a protective sheet PS from the sheet base materials OS1 and OS2 supplied from the sheet base material supply device 6.

The sheet base material supply device 6 has a roll exchange function for exchanging the base material rolls R1 and R2. The sheet base material supply device 6 includes a support device 8 that supports the first base material roll R1 and the second base material roll R2, and the first sheet base material OS1 and the second base material roll R2 related to the first base material roll R1. A joining device 9 for connecting the second sheet base material OS2 according to the above, a cutting device 10 for cutting each sheet base material OS1 and OS2, and each sheet base material OS1 and OS2 in each base material roll R1 and R2. A sensor 11 for measuring the remaining amount is provided.

Further, various rollers for smoothly feeding and moving the sheet base materials OS1 and OS2 are arranged in the path from the sheet base material supply device 6 to the sheet forming device 7.

The support device 8 includes a support 12 that supports the first material roll R1 and the second material roll R2 at a distance from each other, and a support shaft 13 that rotatably supports the support 12.

As shown in FIG. 2, the support body 12 includes a pair of support plates 14 and a connecting member 15 that connects the support plates 14 to each other. Each support plate 14 is composed of, for example, an elongated metal plate. Each support plate 14 has a hole 16 in the middle portion through which the support shaft 13 can be inserted. The connecting member 15 is made of metal, and the pair of support plates 14 are connected by other means such as welding.

The support 12 includes a first support portion 17 that supports the first base material roll R1, a second support portion 18 that supports the second base material roll R2, and a sheet base material drawn from each of the base material rolls R1 and R2. Guide units 19a to 19d for guiding OS1 and OS2 are provided.

The support portions 17 and 18 rotatably support the winding cores of the base material rolls R1 and R2. Each of the support portions 17 and 18 is formed at each end portion in the longitudinal direction of the support plate 14 constituting the support body 12.

The guide portions 19a to 19d are a first guide portion 19a and a second guide portion 19b protruding in a direction orthogonal to the longitudinal direction of the support plate 14 constituting the support body 12, and a first guide portion 19a and a second guide. A third guide portion 19c and a fourth guide portion 19d projecting in a direction opposite to the projecting direction of the portion 19b are included. Each of the guide portions 19a to 19d includes a roller member 20 and a bracket 21 that rotatably supports the roller member 20. The second guide portion 19b and the fourth guide portion 19d may be omitted, but from the viewpoint of shortening the length of the bracket 21 and reducing the size of the device, the second guide portion 19b and the fourth guide portion 19d It is preferable to provide.

The support 12 has a first posture (see FIG. 1) capable of supplying the first sheet base material OS1 of the first base material roll R1 to the sheet forming apparatus 7, and the first base material roll R1 and the second base material roll R2. The posture can be changed to a second posture (see FIG. 6 described later) that can be exchanged with. When the support 12 is in the first posture, the first sheet base material OS1 and the end portion OSa of the second sheet base material OS2 do not overlap. The first sheet base material OS1 is pulled out from the first base material roll R1 supported by the support 12 in the first posture, and is supplied to the sheet forming apparatus 7. By changing the posture of the support 12 from the first posture to the second posture, the first sheet base material OS1 and the end portion OSa of the second sheet base material OS2 can be overlapped with each other.

The support shaft 13 rotatably supports the support 12 by being inserted into a hole 16 formed in the support plate 14 of the support 12. The support 12 is driven by a drive device (not shown) to rotate around the support shaft 13.

The joining device 9 includes pressing members 22a and 22b for fixing the first sheet base material OS1 at a predetermined position, and a holding member 23 for holding the end portion OSa of the second sheet base material OS2.

The pressing members 22a and 22b are the first sheet at positions separated from the first pressing member 22a that presses a part of the first sheet base material OS1 against the end OSa of the second sheet base material OS2 and the first pressing member 22a. It includes a second pressing member 22b that fixes the base material OS 1 to a part of the support device 8. The pressing members 22a and 22b are configured to be repositionable to a standby position and a fixed position for fixing the first sheet base material OS1 to a predetermined position.

The holding member 23 includes an end holding portion 24 for holding the end OSa of the second sheet base material OS2 and a supporting portion 25 for supporting the end holding portion 24.

The end holding portion 24 is a long member having a length dimension larger than the width dimension of the second sheet base material OS2. The end holding portion 24 holds the end OSa of the second sheet base material OS2 by adsorbing it. The end holding portion 24 is formed in a hollow shape and is connected to a suction pump (not shown). As shown in FIG. 3, the end holding portion 24 is formed so as to penetrate the holding surface 26 that sucks and holds the end OSa of the second sheet base material OS2 and the wall portion constituting the holding surface 26. It has a plurality of suction holes 27.

The end holding portion 24 has a first position for holding the end OSa of the second sheet base material OS2 without overlapping the first sheet base material OS1 and a support when the support 12 is in the first posture. When the 12 is in the second posture, the position can be changed to the second position where the end portion OSa of the second sheet base material OS2 is held in a state of being overlapped with the first sheet base material OS1.

The support portion 25 is composed of a pair of elongated members that support each end portion in the longitudinal direction of the end portion holding portion 24. The support portion 25 is a connecting portion connected to a support shaft 13 of the support device 8. Do 28. The connecting portion 28 is formed in an annular shape. A support shaft 13 is inserted inside the connecting portion 28. With this configuration, the holding member 23 is rotatably supported by the support shaft 13.

The holding member 23 joins the first posture (see FIG. 1) that stands by while holding the end portion OSa of the second sheet base material OS2, and the first sheet base material OS1 and the second sheet base material OS2. The posture can be changed to the second posture (see FIG. 6 described later). The holding member 23 is driven by a driving device (not shown) and rotates around the support shaft 13 to change its posture. When the holding member 23 is in the first position, the end holding portion 24 is arranged in the first position. When the holding member 23 is in the second position, the end holding portion 24 is arranged in the second position.

The cutting device 10 has a cutting blade 10a configured to be able to approach and separate from the support 12. The cutting blade 10a is configured to be repositionable to a standby position and a cutting position for cutting the first sheet base material OS1. The cutting blade 10a cuts the sheet base materials OS1 and OS2 at a position between the first pressing member 22a and the second pressing member 22b.

The sensor 11 is provided at a position near the first support portion 17 of the support 12 in the first posture. The sensor 11 is composed of, for example, a transmission type or a reflection type laser sensor, but is not limited to this configuration. The sensor 11 detects that the remaining amount of the sheet base materials OS1 and OS2 in the base material rolls R1 and R2 is less than a predetermined amount.

As shown in FIG. 1, the sheet forming device 7 is a cutting device 29 for cutting the sheet base materials OS1 and OS2 drawn from the base material rolls R1 and R2 to form a protective sheet PS, and below the cutting device 29. A pair of first holding portions 30 and a pair of second holding portions 31 that are arranged and hold the protective sheet PS after cutting, and guide members 32 and 33 that movably support the holding portions 30 and 31. Be prepared.

The cutting device 29 cuts the sheet base materials OS1 and OS2 by the cutting blade 29a in a state where a part of the sheet base materials OS1 and OS2 is held by the holding portions 30 and 31.

The pair of first holding portions 30 are configured to hold both ends in the width direction on the upper portion of the protective sheet PS. The pair of second holding portions 31 are configured to hold both ends in the width direction in the lower portion of the protective sheet PS. Each of the holding portions 30 and 31 has a clamp mechanism for holding the end portion in the width direction of the protective sheet PS formed by cutting the sheet base materials OS1 and OS2.

The guide members 32 and 33 include a first guide member 32 that moves the holding portions 30 and 31 back and forth with respect to the pallet P, and a second guide member 33 that moves the first guide member 32 up and down. include.

The first guide member 32 is a long body that projects forward from the second guide member 33. The first guide member 32 is inclined downward at a predetermined angle with respect to the horizontal direction. The first guide member 32 slidably supports the holding portions 30 and 31 in the longitudinal direction (front-rear direction) on the upper surface side thereof. The first guide member 32 includes a drive mechanism for moving the holding portions 30 and 31 back and forth.

The second guide member 33 is a long body extending in the vertical direction. The second guide member 33 is inclined at a predetermined angle with respect to the vertical direction. The second guide member 33 supports one end of the first guide member 32 so as to be vertically movable. The first guide member 32 is supported by the second guide member 33 so as to form a right angle to the second guide member 33. The second guide member 33 has a drive mechanism for moving the first guide member 32 up and down.

The second guide member 33 is suspended and supported by a base portion 34 arranged above the pallet P. The base portion 34 is divided into upper and lower parts, a first base portion 35 and a second base portion 36. The first base portion 35 is fixed to a beam which is a structure of a building. The second base portion 36 is supported on the lower surface of the first base portion 35 so as to be movable in the front-rear direction.

The pallet P arranged in the packing portion 3 has a first support surface Pa that supports the surface of the glass plate G and a second support surface Pb that supports the lower end portion of the glass plate G. The first support surface Pa and the second support surface Pb intersect so as to form 90 °. By the operation of the transport unit 2 and the sheet forming apparatus 7, the glass plate G and the protective sheet PS are alternately laminated on the pallet P in a vertical posture.

Hereinafter, a method of manufacturing the glass plate package GP using the above-mentioned manufacturing apparatus 1 and a method of exchanging the base material rolls R1 and R2 during the implementation of the method will be described. The manufacturing method of the glass plate packing body GP includes a sheet supply step of supplying the protective sheet PS to the pallet P by the sheet base material supply device 6 and the sheet supply device, and mounting the glass plate G on the pallet P by the transport unit 2. Including the placement process. In this method, the sheet supply process and the placement process proceed at the same time.

In the sheet supply step, the sheet base material is pulled out from the first base material roll R1 supported by the support 12 in the sheet base material supply device 6. The first sheet base material OS1 is continuously transferred to the sheet forming apparatus 7 through a predetermined transfer path.

The support 12 of the sheet base material supply device 6 maintains the first posture (see FIG. 1), and the first base material roll R1 rotated by pulling out the first sheet base material OS1 is driven by the first support portion 17. To support. In this first posture, the second support portion 18 supports the second base material roll R2 at the standby position.

In this case, the joining device 9 makes the holding member 23 stand by in the first posture (see FIG. 1). In this case, the end holding portion 24 is in the first position on the second support portion 18 side. The end holding portion 24 stands by while holding the end OSa of the second sheet base material OS2 pulled out from the second base material roll R2 supported by the second support portion 18. The end holding portion 24 is adsorbing the end OSa of the second sheet base material OS 2 with the holding surface 26 facing downward. An adhesive 37 is provided on the end OSa.

In the sheet supply process, the guide portions 19a to 19d of the support device 8 stand by without coming into contact with the sheet base materials OS1 and OS2. When the support 12 is in the first posture (see FIG. 1), the first guide portion 19a and the second guide portion 19b are directed downward, and the third guide portion 19c and the fourth guide portion 19d are upward. Suitable for.

In the sheet supply step, the sheet forming apparatus 7 cuts the first sheet base material OS1 to a predetermined size to form a rectangular protective sheet PS. The sheet forming device 7 arranges the protective sheet PS held by the holding portions 30 and 31 at a predetermined position on the pallet P.

In the mounting step, when the glass holding portion 4 approaches the pallet P, the conveying portion 2 temporarily stops the glass holding portion 4. After that, the glass holding portion 4 superimposes the glass plate G on the protective sheet PS arranged on the pallet P. When the glass plate G is placed on the second support surface Pb of the pallet P, the glass holding portion 4 releases the grip of the glass plate G by the clamp mechanism 5 and conveys the next glass plate G. Move to the receiving position.

By repeatedly executing the sheet supply process and the placement process, a plurality of glass plates G are loaded on the pallet P via the protective sheet PS. When a predetermined number of glass plates G are placed on the pallet P, the glass plate packing body GP is completed.

When the sensor 11 detects that the remaining amount of the first sheet base material OS1 in the first base material roll R1 is low during the manufacture of the glass plate package GP, the first base material roll R1 is rolled into the second base material roll. The step of exchanging with R2 (roll exchange step) is executed.

As shown in FIG. 4, the roll exchange steps include a posture changing step S1 for changing the posture of the support 12, a joining step S2 for joining the first sheet base material OS1 and the second sheet base material OS2, and the first. A cutting step S3 for cutting the sheet base material OS1 is provided.

In the posture change step S1, the posture of the support 12 is changed from the first posture to the second posture. As shown in FIG. 5, the support device 8 rotates the support 12 around the support shaft 13 counterclockwise as shown by the alternate long and short dash line from the state of the first posture shown by the solid line. The support 12 takes the second posture by rotating 180 ° from the first posture.

In this case, the holding member 23 of the joining device 9 is integrated with the support 12 and rotates 180 ° counterclockwise. As a result, the holding member 23 changes its posture from the first posture to the second posture. When the holding member 23 is in the second posture, the end holding portion 24 moves to the second position. As shown in FIG. 6, the end holding portion 24 holds the end OSa of the second sheet base material OS 2 in a state where the holding surface 26 faces upward at the second position.

In this state, the end holding portion 24 is located below the first pressing member 22a in the standby position. As shown in FIG. 6, when the support 12 and the holding member 23 are in the second posture and the end holding portion 24 is moved to the second position, the ends of the first sheet base material OS1 and the second sheet base material OS2 It is in a state of overlapping with the part OSa.

As the posture of the support 12 is changed, the positions of the guide portions 19a to 19d are also changed. When the support 12 is in the second posture, the first guide portion 19a and the second guide portion 19b face upward, and the third guide portion 19c and the fourth guide portion 19d face downward.

The first guide portion 19a and the second guide portion 19b are pulled out from the first material roll R1 while the support 12 changes its posture from the first posture to the second posture. Contact material OS1. The first guide portion 19a and the second guide portion 19b continue to support the first sheet base material OS1 even after the support 12 is in the second posture. The first guide portion 19a and the second guide portion 19b guide the first sheet base material OS1 in the feeding direction by the rotation of the roller member 20.

As a result, the occurrence of slack in the first sheet base material OS1 during and after the posture change of the support 12 is prevented. Further, it is also prevented that the first sheet base material OS1 comes into contact with the end portion OSa of the second sheet base material OS2 and other members.

In the joining step S2, the first sheet base material OS1 is fixed by the first pressing member 22a and the second pressing member 22b of the joining device 9. As shown in FIGS. 6 and 7, the first pressing member 22a moves downward from the standby position and comes into contact with a part of the first sheet base material OS1. The first pressing member 22a further moves downward and presses a part of the first sheet base material OS1 against the end portion OSa of the second sheet base material OS2 located below.

As shown in FIG. 7, the second pressing member 22b approaches the first guide portion 19a from the standby position, and presses a part of the first sheet base material OS1 against the roller member 20 of the first guide portion 19a. As described above, in the joining step S2, a part of the first sheet base material OS1 is provided with the first guide portion 19a and the end holding portion 24 of the holding member 23 by the first pressing member 22a and the second pressing member 22b. Is fixed to.

In this case, a part of the first sheet base material OS1 and the end portion OSa of the second sheet base material OS2 are connected to the first pressing member 22a and the end holding portion 24 of the holding member 23 via the adhesive 37. Is sandwiched by. As a result, the adhesive material 37 adheres and joins the first sheet base material OS1 and the second sheet base material OS2.

In the cutting step S3, the first sheet base material OS1 is cut by the cutting blade 10a while the first sheet base material OS1 is fixed by the first pressing member 22a and the second pressing member 22b. The cutting blade 10a descends from the standby position and comes into contact with a part of the first sheet base material OS1 located between the first pressing member 22a and the second pressing member 22b. When the cutting blade 10a cuts the first sheet base material OS1, the connection between the first sheet base material OS1 and the second sheet base material OS2 is completed.

After that, the cutting blade 10a, the first pressing member 22a, and the second pressing member 22b are retracted toward the standby position. Further, the end holding portion 24 of the holding member 23 releases the suction holding of the end OSa of the second sheet base material OS2. As a result, the second sheet base material OS2 connected to the first sheet base material OS1 is pulled out from the second base material roll R2 and supplied to the sheet forming apparatus 7. The support 12 continues to support the second base material roll R2 until the next roll replacement step while maintaining the second posture.

After that, the preparation process for the next roll exchange process is executed. In this preparatory step, the used first base material roll R1 is removed from the first support portion 17. Next, as shown by the alternate long and short dash line in FIG. 8, a new tertiary material roll R3 is attached to the first support portion 17.

In the preparatory step, the holding member 23 of the joining device 9 changes its posture from the second posture to the first posture. In this case, the holding member 23 rotates in a direction opposite to the direction of rotation of the support 12 and the holding member 23 in the roll exchange step. Specifically, the holding member 23 rotates clockwise independently of the support 12 as shown by the alternate long and short dash line and the alternate long and short dash line in FIG. When the holding member 23 rotates 180 ° and changes its posture to the first posture, the third sheet base material is pulled out from the new third base material roll R3, its end is pulled out, and the end of the holding member 23 is pulled out. It is sucked and held by the holding portion 24. An adhesive 37 is applied to the end OSa.

In the next roll exchange step, the support 12 is changed from the second posture to the first posture (posture change step S1) as in the previous roll exchange step, and the second sheet base material OS2 in use and the third The third sheet of the original material roll R3 is overlapped with the original material. At this time, the second sheet base material OS2 is supported by the third guide portion 19c and the fourth guide portion 19d.

After that, the second sheet base material OS2 is fixed to the holding member 23 by the first pressing member 22a, and the second sheet base material OS2 is fixed to the third guide portion 19c by the second pressing member 22b (joining step S2). After that, a part of the second sheet base material OS2 is cut by the cutting blade 10a of the cutting device 10 (cutting step S3). As a result, the second sheet base material OS2 and the third sheet base material are connected.

According to the present embodiment described above, the joining device 9 stands by in a state where the end portion OSa of the second sheet base material OS2 is held by the end portion holding portion 24 of the holding member 23, and is said to be said even during the roll exchange step. Continue to hold the end OSa. Therefore, it is possible to prevent a situation in which the end portion OSa of the second sheet base material OS2 touches other constituent members of the sheet base material supply device 6 and hinders the roll exchange process.

The present invention is not limited to the configuration of the above embodiment, and is not limited to the above-mentioned action and effect. The present invention can be modified in various ways without departing from the gist of the present invention.

In the above embodiment, an example of joining the first sheet base material OS1 and the second sheet base material OS2 via the adhesive 37 has been shown, but the present invention is not limited to this configuration. The joining device 9 can connect the first sheet base material OS1 and the second sheet base material OS2 by a joining means other than bonding. Further, even when the adhesive material 37 is used for joining, the adhesive material 37 is not limited to the coating, and the adhesive material 37 may be provided by, for example, attaching a double-sided tape.

6 Sheet base material supply device 8 Support device 9 Joining device 10 Cutting device 10a Cutting blade 12 Support 22a First pressing member 22b Second pressing member 24 End holding part 26 Holding surface G Glass plate OS1 First sheet base material OS2 No. 2 Sheet base material OSa 2nd sheet base material end PS protective sheet R1 1st base material roll R2 2nd base material roll

Claims (5)

It is a sheet base material supply device that supplies the sheet base material for the protective sheet to be stacked on the glass plate from the base material roll.
The original material roll includes a first original material roll in which the first sheet original material is wound up and a second original material roll in which the second sheet original material is wound up.
A support device for supporting the first base material roll and the second base material roll, and a joining device for joining a part of the first sheet base material and an end portion of the second sheet base material are provided.
The joining device is a first pressing unit that presses an end holding portion that holds the end portion of the second sheet base material and a part of the first sheet base material against the end portion of the second sheet base material. A sheet base material supply device characterized by comprising a member. The sheet base material supply device according to claim 1, wherein the end holding portion includes a holding surface for sucking and holding the end portion of the second sheet base material. The support device includes a support for supporting the first material roll and the second material roll.
The support has a first posture in which the first sheet base material can be pulled out from the first sheet base material without overlapping with the second sheet base material, and the first sheet. The second posture in which the base material and the end portion of the second sheet base material are overlapped with each other is configured so that the posture can be changed as the support rotates.
The end holding portion is a first position for holding the end portion of the second sheet base material without overlapping the first sheet base material when the support is in the first posture, and the support. When the body is in the second posture, the end portion of the second sheet base material is held in a state of being overlapped with the first sheet base material. The sheet base material supply device according to claim 1 or 2, which is configured to be modifiable. The sheet base material supply device according to claim 3, wherein the end holding portion is configured to be rotatable independently of the rotation of the support. The joining device includes a second pressing member that fixes the first sheet base material to a part of the supporting device at a position away from the first pressing member.
A cutting device for cutting the first sheet base material is provided.
The sheet base material supply according to any one of claims 1 to 4, wherein the cutting device includes a cutting blade for cutting the first sheet base material between the first pressing member and the second pressing member. Device.

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