CN115298121A

CN115298121A - Sheet material supply device

Info

Publication number: CN115298121A
Application number: CN202180022751.1A
Authority: CN
Inventors: 中村寿; 和泉纯一
Original assignee: Nippon Electric Glass Co Ltd
Current assignee: Nippon Electric Glass Co Ltd
Priority date: 2020-04-21
Filing date: 2021-03-12
Publication date: 2022-11-04
Also published as: KR20230005111A; WO2021215137A1; JP2021172461A; JP7481669B2

Abstract

The sheet material supply device (6) is provided with a support device (8) for supporting a first material roll (R1) and a second material roll (R2), and a joining device (9) for joining a part of a first sheet material (OS 1) of the first material roll (R1) and an end part (OSa) of a second sheet material (OS 2) of the second material roll (R2). The bonding device (9) is provided with an end holding part (24) for holding the end (OSa) of the second sheet material (OS 2) and a first pressing member (22 a) for pressing a part of the first sheet material (OS 1) against the end (OSa) of the second sheet material (OS 2).

Description

Sheet material supply device

Technical Field

The present invention relates to a sheet material supply device for supplying a sheet material for a protective sheet to be superposed on a glass plate.

Background

As is well known, glass plate packages are often used as a means for transporting various glass plates such as glass substrates for displays and glass substrates for solar cells. A glass plate package is manufactured by cutting a sheet material pulled out from a material roll to form a rectangular protective sheet, and mounting a glass plate on which the protective sheet is superimposed on a tray (see, for example, patent document 1).

In order to efficiently manufacture a glass plate package, it is necessary to efficiently replace the material roll. For example, patent document 2 discloses a supply device that holds two material rolls (rolls) configured by winding resin sheets and can bond the resin sheets of one material roll (hereinafter referred to as a "first material roll") to the resin sheets of the other material roll (hereinafter referred to as a "second material roll").

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

The bonding device of the supply device bonds the resin sheets to each other by pressing the resin sheets in use of the first stock material roll against the adhesive layer provided at the end portions (winding end portions) of the resin sheets of the second stock material roll.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2014-114165

Patent document 2: japanese patent laid-open publication No. 2017-121985

Disclosure of Invention

Problems to be solved by the invention

In the conventional supply device, the holding member holds the second material roll rotatably without holding the end portions of the resin sheets of the second material roll. Therefore, when the adhesive device adheres the resin sheets, the resin sheets of the second material roll hang down, and the adhesive layer formed at the end portion thereof may adhere to other components of the supply device, thereby hindering the replacement work of the material roll.

The present invention has been made in view of the above circumstances, and a technical object thereof is to reliably perform roll replacement.

Means for solving the problems

The present invention is directed to a sheet material supply device for supplying a sheet material for a protective sheet to be overlapped with a glass sheet from a material roll, the sheet material supply device including a first material roll formed by winding a first sheet material and a second material roll formed by winding a second sheet material, the sheet material supply device including a support device for supporting the first material roll and the second material roll and a joining device for joining a part of the first sheet material to an end of the second sheet material, the joining device including an end holding portion for holding the end of the second sheet material and a first pressing member for pressing the part of the first sheet material to the end of the second sheet material.

According to this configuration, the joining device can press a part of the first sheet of material of the first roll of material against the end portion of the second sheet of material by the first pressing member in a state where the end portion of the second sheet of material of the second roll of material is held by the end portion holding portion. This prevents the end of the second sheet material from being accidentally pulled out and coming into contact with the components of the sheet material supply device. This enables the first roll of material and the second roll of material to be reliably replaced.

The end holding portion may include a holding surface that suctionally holds the end of the second sheet of the material. Thus, the end portion of the second sheet material can be easily and reliably held and released by the end portion holding portion.

The support device may include a support body that supports the first material roll and the second material roll, the support body may be configured to be changeable in posture to a first posture and a second posture in accordance with rotation of the support body, the first posture may be a posture in which the first material roll is drawn out from the first material roll without overlapping the second material, the second posture may be a posture in which the first material and the end portion of the second material are overlapped, the end portion holding portion may be configured to be changeable in position to a first position and a second position in accordance with rotation of the end portion holding portion, the first position may be a position in which the end portion of the second material is held without overlapping the first material when the support body is in the first posture, and the second position may be a position in which the end portion of the second material is held in an overlapped state with the first material when the support body is in the second posture.

By configuring the end holding portion to be changeable in position as described above, the end of the second sheet material can be arranged at an appropriate position in accordance with the posture change of the support body.

The end holding portion may be configured to be rotatable independently of the rotation of the support body. With this configuration, the end holding portion can be prevented from coming into contact with the second sheet material when the second material roll is replaced with another material roll with a small remaining amount of the second material roll. In addition, when the second material roll is replaced with another material roll, the other end holding part is not required to be used, and the second material roll can be replaced with another material roll by the end holding part common to the first material roll and the second material roll. Therefore, the equipment cost can be reduced.

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

According to this configuration, immediately after the joining of the part of the first piece of material and the end of the second piece of material is completed, the first piece of material can be cut by the cutting blade in a state where the first piece of material is fixed by the first pressing member and the second pressing member of the joining device. Thus, the joining operation of the sheet material by the joining device and the cutting operation of the first sheet material by the cutting device can be efficiently performed.

Effects of the invention

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

Drawings

Fig. 1 is a side view showing a manufacturing apparatus of a glass plate package.

Fig. 2 is a bottom view of the sheet material feeding apparatus viewed from II-II of fig. 1.

Fig. 3 is a sectional view of the end holding portion.

Fig. 4 is a flowchart illustrating a volume replacement method.

Fig. 5 is a side view showing a posture changing step of the roll changing method.

Fig. 6 is a side view showing a joining process of the roll replacement method.

Fig. 7 is a side view showing a joining step and a cutting step of the roll replacement method.

Fig. 8 is a side view showing a step of the roll replacement method.

Detailed Description

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

Fig. 1 shows a manufacturing apparatus of a glass plate package. The manufacturing apparatus 1 cuts the sheet materials OS1 and OS2 drawn out from the material roll R1 or R2 to form the protective sheet PS. The manufacturing apparatus 1 loads the glass sheet G on the tray P while overlapping the protective sheet PS. Thus, the manufacturing apparatus 1 manufactures the glass plate package GP.

The glass sheet G is formed by cutting a long glass ribbon formed by, for example, the overflow down-draw method into a rectangular shape. The overflow downdraw method is as follows: the molten glass is caused to flow into an overflow trough provided in the upper portion of a forming body having a substantially wedge-shaped cross section, and the molten glass overflowing from the overflow trough to both sides is caused to flow down along the side wall portions of the forming body on both sides and to be fused and integrated at the lower end portion of the forming body, thereby continuously forming a glass ribbon. The glass sheet G is not limited to the overflow downdraw method, and can be produced by a float method or other various forming methods.

The material rolls R1 and R2 are configured by winding the sheet materials OS1 and OS2 around a winding core. As the sheet material members OS1 and OS2, for example, a foamed resin sheet composed of a resin mainly composed of polyethylene is used, but the configuration is not limited to this. As the sheet materials OS1 and OS2, glass interleaving paper may be used.

The manufacturing apparatus 1 includes a conveying unit 2 for conveying glass sheets G and a packing unit 3 for packing the glass sheets G on a pallet P.

The conveying unit 2 is configured as a conveying device including a plurality of glass holding units 4 for moving the glass sheet G. Each glass holding unit 4 can be moved three-dimensionally by an arm or other various moving mechanisms. Each glass holding portion 4 has a chuck mechanism 5 capable of gripping the glass sheet G. The conveying section 2 conveys the glass sheet G by holding the upper part of the glass sheet G by the chuck mechanism 5 of the glass holding section 4 so that one surface of the glass sheet G faces the moving direction thereof.

The packing section 3 includes: a sheet raw material supply device 6; and a sheet forming device 7 that forms the protective sheet PS from the sheet pieces OS1, OS2 supplied by the sheet piece supplying device 6.

The sheet material supply device 6 has a roll replacement function of replacing the material rolls R1 and R2. The sheet material supply device 6 includes: a support device 8 that supports the first reel R1 and the second reel R2 of material; a joining device 9 for joining the first piece OS1 of the first reel R1 and the second piece OS2 of the second reel R2; a cutting device 10 for cutting the pieces of material OS1 and OS2; and a sensor 11 for measuring the remaining amount of each piece of material OS1, OS2 in each material roll R1, R2.

In addition, various rollers for smoothly performing feeding movement of the sheet materials OS1 and OS2 are arranged on a path from the sheet material supply device 6 to the sheet forming device 7.

The support device 8 includes: a support body 12 that separates and supports the first roll R1 of material and the second roll R2 of material; and a support shaft 13 that rotatably supports the support body 12.

As shown in fig. 2, the support body 12 includes a pair of support plates 14 and a coupling member 15 that couples the support plates 14 to each other. Each support plate 14 is formed of, for example, an elongated metal plate. Each support plate 14 has a hole 16 in the middle thereof through which the support shaft 13 can be inserted. The connecting member 15 is made of metal, and connects the pair of support plates 14 by welding or other means.

The support body 12 includes a first support portion 17 for supporting the first material roll R1, a second support portion 18 for supporting the second material roll R2, and guide portions 19a to 19d for guiding the sheet materials OS1 and OS2 drawn from the material rolls R1 and R2.

The

support portions

17 and 18 rotatably support the cores of the material rolls R1 and R2. The

support portions

17 and 18 are formed at respective end portions in the longitudinal direction of the support plate 14 constituting the support body 12.

The guide portions 19a to 19d include: a first guide portion 19a and a second guide portion 19b that protrude in a direction orthogonal to the longitudinal direction of the support plate 14 constituting the support body 12; and a third guide portion 19c and a fourth guide portion 19d that protrude in a direction opposite to the protruding direction of the first guide portion 19a and the second guide portion 19 b. Each of the guides 19a to 19d includes a roller member 20 and a bracket 21 rotatably supporting the roller member 20. The second guide portion 19b and the fourth guide portion 19d may be omitted, but in view of reducing the length of the carriage 21 and downsizing the apparatus, it is preferable to provide the second guide portion 19b and the fourth guide portion 19d.

The support body 12 can be changed to a first posture (see fig. 1) in which the first piece of material OS1 of the first roll R1 can be supplied to the sheet forming device 7 and a second posture (see fig. 6 described later) in which the first roll R1 and the second roll R2 can be replaced. When the support body 12 is in the first posture, the end portions OSa of the first and second pieces of raw material OS1 and OS2 do not overlap. The first piece of material OS1 is pulled out from the first roll of material R1 supported by the support body 12 in the first posture and is supplied to the sheet forming device 7. The support body 12 can overlap the end portions OSa of the first and second pieces of material OS1 and OS2 by changing the posture from the first posture to the second posture.

The support shaft 13 is inserted through a hole 16 formed in a support plate 14 of the support body 12, thereby rotatably supporting the support body 12. The support body 12 is driven by a drive device, not shown, to rotate about the support shaft 13.

The bonding apparatus 9 includes pressing

members

22a and 22b for fixing the first sheet OS1 at a predetermined position, and a holding member 23 for holding the end portion OSa of the second sheet OS 2.

The

pressing members

22a, 22b include: a first pressing member 22a that presses a part of the first piece of stock material OS1 against the end OSa of the second piece of stock material OS2; and a second pressing member 22b that fixes the first sheet of material OS1 to a part of the supporting device 8 at a position separated from the first pressing member 22 a. The

pressing members

22a and 22b are configured to be changeable in position to a standby position and a fixed position for fixing the first sheet OS1 at a predetermined position.

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

The end holding portion 24 is an elongated member having a length dimension larger than the width dimension of the second piece OS 2. The end holding portion 24 holds the end OSa of the second piece of material OS2 by suction. 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 includes a holding surface 26 for holding the end OSa of the second sheet OS2 by suction, and a plurality of suction holes 27 formed to penetrate a wall portion constituting the holding surface 26.

The end holding portion 24 is configured to be capable of changing the position to a first position for holding the end OSa of the second piece of material OS2 without overlapping the first piece of material OS1 when the support body 12 is in the first posture and a second position for holding the end OSa of the second piece of material OS2 in a state of overlapping the first piece of material OS1 when the support body 12 is in the second posture.

The support portion 25 is formed of a pair of long members that support the ends of the end holding portion 24 in the longitudinal direction, and the support portion 25 is connected to a connection portion 28 that is connected to the support shaft 13 of the support device 8. Coupling portion 28 is formed annularly. A support shaft 13 is inserted inside the coupling portion 28. With this configuration, the holding member 23 is rotatably supported by the support shaft 13.

The holding member 23 is configured to be capable of changing its posture to a first posture (see fig. 1) in which it stands by with the end OSa of the second piece OS2 held, and a second posture (see fig. 6 described later) in which it joins the first piece OS1 and the second piece OS 2. The holding member 23 is driven by a drive device, not shown, and rotates about the support shaft 13, thereby changing its posture. When the holding member 23 is in the first posture, the end holding portion 24 is arranged at the first position. When the holding member 23 is in the second posture, the end holding portion 24 is arranged at the second position.

The cutting device 10 includes a cutting blade 10a configured to be able to approach and separate from the support body 12. The cutting blade 10a is configured to be capable of changing positions to a standby position and a cutting position for cutting the first piece OS1. The cutting blade 10a cuts the sheet pieces OS1 and OS2 at a position between the first pressing member 22a and the second pressing member 22 b.

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

As shown in fig. 1, the sheet forming device 7 includes: a cutting device 29 that cuts the sheet material pieces OS1 and OS2 drawn out from the material roll R1 or R2 to form a protective sheet PS; a pair of first holding portions 30 and a pair of second holding portions 31 which are disposed below the cutting device 29 and hold the cut protective sheet PS; and guide

members

32, 33 that movably support the

respective holding portions

30, 31.

The cutting device 29 cuts the pieces of sheet material OS1 and OS2 by the cutting blade 29a while holding a part of the pieces of sheet material OS1 and OS2 by the holding

portions

30 and 31.

The pair of first holding portions 30 are configured to hold both ends in the width direction of the upper portion of the protective sheet PS. The pair of second holding portions 31 are configured to hold both end portions in the width direction of the lower portion of the protective sheet PS. Each of the holding

portions

30 and 31 has a chuck mechanism for holding the widthwise end portion of the protective sheet PS obtained by cutting the sheet material pieces OS1 and OS 2.

The

guide members

32 and 33 include a first guide member 32 for moving the holding

portions

30 and 31 forward and backward and away from the tray P, and a second guide member 33 for moving the first guide member 32 up and down.

The first guide member 32 is an elongated body protruding 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 supports the

respective holding portions

30 and 31 on the upper surface side thereof so as to be slidable in the longitudinal direction (front-rear direction). The first guide member 32 includes a drive mechanism for moving the holding

portions

30 and 31 forward and backward.

The second guide member 33 is an elongated 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 movable up and down. The first guide member 32 is supported by the second guide member 33 at right angles to the second guide member 33. The second guide member 33 has a driving mechanism for moving the first guide member 32 up and down.

The second guide member 33 is suspended from and supported by a base portion 34 disposed above the tray P. The base portion 34 is divided into two upper and lower portions, i.e., 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 tray P disposed in the packaging unit 3 has a first support surface Pa that supports the surface of the glass sheet G and a second support surface Pb that supports the lower end of the glass sheet G. The first support surface Pa intersects the second support surface Pb at 90 °. By the operation of the conveying unit 2 and the sheet forming device 7, the glass sheets G and the protective sheets PS are alternately stacked on the tray P in the vertical posture.

Hereinafter, a method of manufacturing the glass plate package GP using the manufacturing apparatus 1 and a method of replacing the material rolls R1 and R2 in the implementation of the method will be described. The method for manufacturing the glass plate package body GP comprises the following steps: a sheet supply step of supplying the protective sheet PS to the tray P by the sheet material supply device 6 and the sheet supply device; and a mounting step of mounting the glass plate G on the pallet P by the carrying part 2. In the method, the sheet feeding step and the mounting step are performed simultaneously.

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

The support body 12 of the sheet material supply device 6 supports the first material roll R1, which is rotated by the drawing of the first sheet material OS1, by the first support portion 17 while maintaining the first posture (see fig. 1). In the first posture, the second support portion 18 supports the second raw material roll R2 at the standby position.

In this case, the joining device 9 waits for the holding member 23 to be in the first posture (see fig. 1). In this case, the end holding portion 24 is located at 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 material OS2 pulled out from the second material roll R2 supported by the second support portion 18. The end holding portion 24 sucks the end OSa of the second sheet OS2 with the holding surface 26 facing downward. The end OSa is provided with an adhesive 37.

In the sheet feeding step, the guide portions 19a to 19d of the support device 8 stand by without coming into contact with the sheet materials OS1 and OS 2. When the support body 12 is in the first posture (see fig. 1), the first guide portion 19a and the second guide portion 19b face downward, and the third guide portion 19c and the fourth guide portion 19d face upward.

In the sheet supply step, the sheet forming device 7 cuts the first sheet of material OS1 into a predetermined size to form a protective sheet PS having a rectangular shape. The sheet forming apparatus 7 disposes the protective sheet PS held by the holding

portions

30 and 31 at a predetermined position on the tray P.

In the mounting step, the conveying unit 2 temporarily stops the glass holding unit 4 when the glass holding unit 4 approaches the tray P. Thereafter, the glass holding portion 4 overlaps the glass sheet G with the protective sheet PS disposed on the tray P. When the glass sheet G is placed on the second support surface Pb of the tray P, the glass holding portion 4 releases the gripping of the glass sheet G by the chuck mechanism 5, and moves to its receiving position, so that the next glass sheet G is conveyed.

By repeating the sheet supply step and the mounting step, the plurality of glass sheets G are mounted on the tray P with the protective sheet PS interposed therebetween. When a predetermined number of glass sheets G are placed on the tray P, the glass sheet package GP is completed.

In the manufacture of the glass plate package GP, when the sensor 11 detects that the remaining amount of the first sheet material OS1 of the first material roll R1 is reduced, a step of replacing the first material roll R1 with the second material roll R2 (roll replacement step) is performed.

As shown in fig. 4, the roll replacement step includes a posture changing step S1 of changing the posture of the support body 12, a joining step S2 of joining the first sheet material OS1 and the second sheet material OS2, and a cutting step S3 of cutting the first sheet material OS1.

In the posture changing step S1, the posture of the support body 12 is changed from the first posture to the second posture. As shown in fig. 5, the support device 8 rotates the support body 12 counterclockwise as shown by the two-dot chain line from the state of the first posture shown by the solid line around the support shaft 13. The support body 12 is rotated 180 ° from the first posture to be in the second posture.

In this case, the holding member 23 of the joining device 9 is rotated counterclockwise by 180 ° integrally with the support body 12. Thereby, the holding member 23 changes the posture from the first posture to the second posture. When the holding member 23 is brought into the second posture, the end holding portion 24 is moved to the second position. As shown in fig. 6, the end holding portion 24 holds the end OSa of the second sheet of raw material OS2 at the second position with the holding surface 26 facing upward.

In this state, the end holding portion 24 is positioned below the first pressing member 22a in the standby position. As shown in fig. 6, when the support body 12 and the holding member 23 are in the second posture and the end holding portion 24 is moved to the second position, the end portions OSa of the first and second pieces of material OS1 and OS2 are overlapped with each other.

As the posture of the support body 12 changes, the positions of the guide portions 19a to 19d also change. When the support body 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.

While the support 12 changes the posture from the first posture to the second posture, the first guide portion 19a and the second guide portion 19b contact the first piece of material OS1 pulled out from the first material roll R1. The first guide portion 19a and the second guide portion 19b continue to support the first piece of material OS1 even after the support body 12 has reached the second posture. The first guide portion 19a and the second guide portion 19b guide the first sheet material OS1 in the feeding direction thereof by the rotation of the roller member 20.

This prevents the first material OS1 from loosening during and after changing the posture of the support body 12. In addition, the first piece of material OS1 is also prevented from contacting the end OSa of the second piece of material OS2 and other members.

In the joining step S2, the first sheet material OS1 is fixed by the first pressing member 22a and the second pressing member 22b of the joining apparatus 9. As shown in fig. 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 OS1. The first pressing member 22a further moves downward, and presses a part of the first piece OS1 against the end OSa of the second piece OS2 positioned below.

As shown in fig. 7, the second pressing member 22b approaches the first guide 19a from the standby position, and presses a part of the first sheet OS1 against the roller member 20 of the first guide 19 a. In this manner, in the joining step S2, a part of the first sheet OS1 is fixed to 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 22 b.

In this case, a part of the first sheet OS1 and the end OSa of the second sheet OS2 are sandwiched between the first pressing member 22a and the end holding portion 24 of the holding member 23 via the adhesive 37. The adhesive material 37 thereby bonds the first and second pieces of material OS1 and OS2 together.

In the cutting step S3, the first piece OS1 is cut by the cutting blade 10a in a state where the first piece OS1 is fixed by the first pressing member 22a and the second pressing member 22 b. The cutting blade 10a is lowered from the standby position and brought into contact with a part of the first sheet OS1 located between the first pressing member 22a and the second pressing member 22 b. The cutting blade 10a cuts the first piece OS1, and the connection between the first piece OS1 and the second piece OS2 is completed.

Thereafter, the cutting blade 10a, the first pressing member 22a, and the second pressing member 22b are retracted toward the standby position. In addition, the end holding portion 24 of the holding member 23 releases the suction holding of the end OSa of the second sheet material OS 2. Thereby, the second piece of material OS2 joined to the first piece of material OS1 is pulled out from the second roll of material R2 and supplied to the sheet forming device 7. The support body 12 continues to support the second material roll R2 until the next roll replacement process while maintaining the second posture.

After that, a preparation process for the next roll replacement process is performed. In the preparation step, the first used roll R1 of the material is taken out from the first support portion 17. Next, as shown by the two-dot chain line in fig. 8, a new third material roll R3 is mounted on the first support portion 17.

In the preparation step, the holding member 23 of the joining device 9 changes the posture from the second posture to the first posture. In this case, the holding member 23 rotates in the direction opposite to the direction of rotation of the support body 12 and the holding member 23 in the roll replacement step. Specifically, the holding member 23 rotates clockwise independently of the support body 12 as indicated by the one-dot chain line and the two-dot chain line in fig. 8. When the holding member 23 is rotated by 180 ° to change the posture to the first posture, a new third raw material roll R3 is pulled out from the third raw material piece, and its end portion is pulled out and sucked and held by the end holding portion 24 of the holding member 23. The end OSa is coated with an adhesive 37.

In the next roll replacement step, the support body 12 is changed from the second posture to the first posture (posture changing step S1) and the second material OS2 in use is superposed on the third material of the third material roll R3, as in the previous roll replacement step. At this time, the second sheet material OS2 is supported by the third guide portion 19c and the fourth guide portion 19d.

Thereafter, the second piece of material OS2 is fixed to the holding member 23 by the first pressing member 22a, and the second piece of material OS2 is fixed to the third guide portion 19c by the second pressing member 22b (bonding step S2). Thereafter, a part of the second sheet material OS2 is cut by the cutting blade 10a of the cutting device 10 (cutting step S3). Thereby, the second piece OS2 is coupled to the third piece.

According to the present embodiment described above, the joining device 9 stands by with the end portions OSa of the second sheet material OS2 held by the end portion holding portions 24 of the holding members 23, and continues to hold the end portions OSa also in the roll replacement step. Therefore, the end OSa of the second sheet material OS2 can be prevented from coming into contact with other components of the sheet material supply device 6 and hindering the roll replacement process.

The present invention is not limited to the configuration of the above embodiment, and is not limited to the above operation and effects. The present invention can be variously modified within a scope not departing from the gist of the present invention.

In the above-described embodiment, the first and second pieces of material OS1 and OS2 are joined by the adhesive 37, but the present invention is not limited to this configuration. The bonding device 9 can connect the first sheet OS1 and the second sheet OS2 by bonding means other than adhesion. Even when the adhesive 37 is used for bonding, the adhesive 37 is not limited to coating, and the adhesive 37 may be provided by attaching a double-sided tape, for example.

Description of the reference numerals

6. Sheet material supply device

8. Supporting device

9. Joining device

10. Cutting device

10a cutting edge

12. Support body

22a first pressing member

22b second pressing member

24. End holding part

26. Retaining surface

G glass plate

OS1 first piece of stock

OS2 second piece of stock

End of OSa second piece of stock material

PS protective sheet

R1 first stock roll

R2 second coil of stock material.

Claims

1. A sheet material supply device for supplying a sheet material for a protective sheet overlapped with a glass plate from a sheet material roll,

the sheet stock member supply apparatus is characterized in that,

the raw material roll comprises a first raw material roll formed by winding a first piece of raw material and a second raw material roll formed by winding a second piece of raw material,

the sheet material supply device includes a support device that supports the first and second material rolls, and a joining device that joins a portion of the first sheet material to an end of the second sheet material,

the joining device includes an end holding portion that holds the end of the second piece of material, and a first pressing member that presses the part of the first piece of material against the end of the second piece of material.

2. The piece stock supply of claim 1,

the end holding portion includes a holding surface for suction-holding the end of the second sheet of material.

3. The sheet stock member supply apparatus according to claim 1 or 2,

the support device includes a support body that supports the first material roll and the second material roll,

the support body is configured to be changeable in posture into a first posture and a second posture in accordance with rotation of the support body, the first posture being a posture in which the first piece of material is not overlapped with the second piece of material and the first piece of material is reeled out from the first piece of material, and the second posture being a posture in which the first piece of material is overlapped with the end portion of the second piece of material,

the end holding portion is configured to be changeable in position with rotation of the end holding portion to a first position at which the end of the second piece of raw material is held without overlapping the first piece of raw material when the support body is in the first posture and a second position at which the end of the second piece of raw material is held in a state of overlapping the first piece of raw material when the support body is in the second posture.

4. A sheet stock member supply arrangement according to claim 3,

the end holding portion is configured to be rotatable independently of rotation of the support body.

5. The sheet stock member supply apparatus according to any one of claims 1 to 4,

the joining device includes a second pressing member that fixes the first sheet material piece to a part of the supporting device at a position separated from the first pressing member,

the sheet material supply device includes a cutting device for cutting the first sheet material,

the cutting device includes a cutting blade configured to cut the first sheet material between the first pressing member and the second pressing member.