TW201834952A - Glass plate manufacturing method and protective sheet separation device - Google Patents

Abstract

This glass plate manufacturing method includes: a step for conveying a glass plate (G) placed on a protective sheet (P); and a step for separating, at the downstream end of a conveyor belt (2), the protective sheet (P) from the glass plate (G) by a suction roller (4), part of the peripheral wall of which has a wound portion (x1) over which the conveyor belt (2) is wound, suctioning the protective sheet (P) via the conveyor belt (2). There is provided a partitioning member (5) which surrounds a non-wound portion (y1) of the peripheral wall of the suction roller (4), on which the conveyor belt (2) is not wound, and the conveyor belt (2) and the partitioning member (5) form a closed section in which the suction roller (4) is included.

Description

Method for manufacturing glass plate and separating device for protective sheet

[0001] The present invention relates to a method for producing a glass sheet and a separating device for protecting a sheet.

[0002] In the process of manufacturing a glass plate, there is a case where the glass plate is placed in a state in which the glass plate is placed on a protective sheet such as a liner, a polyethylene sheet, or a foamed resin sheet. In this manner, during the conveyance of the glass sheet using the protective sheet as a lower mat, for example, the glass sheet is subjected to refurbishment (cutting treatment) or the like. The protective sheet is separated from the glass sheet at a predetermined stage after the end of the cutting process, and only the glass sheet is conveyed toward the subsequent process. In the subsequent process, the manufacturing related process including the chamfered end face processing and the like is continued for the glass sheet. [0003] A method of separating the protective sheet from the glass sheet can be exemplified by the method disclosed in Patent Document 1. In the same document, the glass plate placed on the protective sheet is conveyed by the suction roller (rotary roller) of the conveyance belt in the downstream end portion of the conveyance belt in the conveyance direction. The protective sheet is separated from the glass sheet only by adsorbing the protective sheet and introducing it downward. [PRIOR ART DOCUMENT] [Patent Document] [0004] [Patent Document 1] JP-A-2007-1682

[Problems to be Solved by the Invention] In Patent Document 1, the suction roller has a winding portion for winding a conveyance belt at a part of the peripheral wall portion, and the position of the corresponding winding portion is The resulting negative pressure attraction forces the protective sheet to adsorb. [0006] However, in the same literature, air (outside air) is easily flowed into the inside of the suction roller from the non-winding portion side where the conveyance belt is not wound from the peripheral wall portion of the suction roller. Therefore, the suction force attraction in the winding portion cannot be sufficiently increased, and the adsorption of the protective sheet is likely to be weak. As a result, a situation in which the protective sheet cannot be separated from the glass sheet may occur. [0007] A technical problem of the present invention is to reliably separate a protective sheet from a glass sheet that is conveyed while being placed on a protective sheet. [Means for Solving the Problem] [0008] A method for producing a glass sheet according to the present invention, which is created to solve the above problems, includes a downstream side of a conveyance belt that conveys a glass sheet placed on a protective sheet The end portion has a suction roller that is a portion of the peripheral wall portion that is wound around the conveyance belt, and is a process of separating the protective sheet from the glass sheet by sucking the protective sheet through the conveyance belt, and is characterized in that the arrangement is A partition member that surrounds the non-winding portion of the peripheral wall portion of the roller that is not wound by the conveyance belt, forms a closed cross section in which the suction roller is housed by the conveyance belt and the partition member. According to this configuration, since the non-winding portion of the peripheral wall portion of the suction roller is surrounded by the partition member, and the closed section in which the suction roller is included in the conveyance belt and the partition member is formed, the air can be suppressed. A situation in which the non-winding portion of the suction roller flows into the suction roller. As a result, the suction force of the negative pressure can be sufficiently generated at the position corresponding to the winding portion. Therefore, the protective sheet can be surely separated from the glass sheet by positively adsorbing the protective sheet at the position of the negative pressure which occurs at the position of the corresponding winding portion. [0009] In the above configuration, the partition member is provided with an upstream side belt portion located on the upstream side of the winding portion among the conveyance belts, and is disposed at a distance from the non-winding portion. It is preferable that the first wall portion between the downstream side belt portions on the downstream side and the second wall portion extending from the upper and lower ends of the first wall portion toward the suction roller side along the conveyance belt are preferable. In this case, even if the first wall portion is provided at a distance from the non-winding portion, the second wall portion can suppress the flow of the upstream side belt portion and the downstream side belt portion of the air permeating portion. [0010] In this case, it is preferable that the partition member has a third wall portion that covers the opening portions at both ends in the width direction of the space surrounded by the first wall portion, the second wall portion, and the non-winding portion. In this case, the third wall portion prevents the air from flowing in from the both ends in the width direction of the space surrounded by the second wall portion and the non-winding portion. [0011] In the above configuration, the second wall portion may have a metal body and a resin portion formed of a resin at a tip end portion of the second wall portion on the suction roller side. In this case, even if the tip end portion of the second wall portion on the suction roller side comes into contact with the suction roller, the resin portion is only deformed or worn along the shape of the suction roller. Therefore, even if the dimensional accuracy and the assembly accuracy of the partition member are insufficient, the second wall portion is slightly in contact with the suction roller, so that the inflow of air from between the second wall portion and the suction roller can be suppressed. [0012] In the above configuration, it is preferable that the air that sucks the space between the partition member and the non-winding portion from the partition member side is preferable. In this case, since the air itself in the space between the partition member and the non-winding portion is also reduced, the air flowing in from the non-winding portion side toward the suction roller can be surely suppressed. Thereby, the suction force of the negative pressure can be greatly increased at the position corresponding to the winding portion. [0013] In this case, it is preferable that a plurality of circumferential grooves are formed in the peripheral wall portion of the suction roller. In this case, when the air on the side of the roller is sucked from the partition member, the air in the circumferential groove is also sucked, and it is expected that the suction force at the position corresponding to the winding portion is improved. [0014] The separation device for a protective sheet of the present invention, which is created to solve the above problems, includes a conveyance belt that conveys a glass sheet placed on the protective sheet, and a downstream end portion of the conveyance belt. A part of the peripheral wall portion allows the suction roller of the winding portion of the conveyance belt to be detached from the conveyance belt by the suction roller to separate the protective sheet from the glass sheet, and is characterized in that it has a suction roller. A partition member that surrounds the non-winding portion in which the belt is not wound is transported in the peripheral wall portion, and the conveyance belt and the partition member form a closed cross section in which the suction roller is housed. According to this configuration, the same operational effects as those of the corresponding configuration described above can be obtained. [Effect of the Invention] According to the present invention as described above, the protective sheet can be reliably separated from the glass sheet conveyed in a state of being placed on the protective sheet.

[0017] Hereinafter, embodiments of the present invention will be described with reference to the drawings. (First Embodiment) As shown in Fig. 1, the separation device 1 for a protective sheet according to the first embodiment is provided on the positive upstream side of the transport means C disposed on the associated processing platform W, and is provided with an endless (circular) conveying belt 2. The conveying means C for manufacturing the associated processing platform W is constituted by, for example, a roller conveyor belt and a conveyance belt, and conveys the glass sheet G in the horizontal direction (preferably in the horizontal direction) as indicated by an arrow A. In the present embodiment, the related processing platform W is manufactured, and the manufacturing related processing is a platform for applying end surface processing such as chamfering processing to the glass sheet G, but manufacturing related processing by the manufacturing related processing platform W, It is not limited to end surface processing. In addition to the end surface processing, it is a matter of course that the glass sheet G such as a cutting process, a lamination process such as a resin film, a plating process such as printing, or the like is directly applied to the manufacturing process, and the glass plate G is directly applied. The washing treatment and the gradual cooling treatment (heat treatment) removed by the deformation of the glass sheet G indirectly bring the glass sheet G closer to the final product. [0020] The conveying belt 2 of the separating device 1 is composed of, for example, elastic rubber, and is wound around two rotating rollers 3 and 4 in total. The conveyance belt 2 is conveyed by the rotation of the rotating rollers 3 and 4, and the glass plate G placed on the protective sheet P is conveyed in the horizontal direction (preferably horizontal direction) as the arrow a. The conveyance belt 2 transfers the glass sheet G to the conveyance means C at the downstream end part. [0021] Among the two rotating rollers 3 and 4 that are wound around the conveyance belt 2, the rotating roller 4 disposed at the downstream end of the conveyance belt 2 is a suction roller (hereinafter, the rotating roller 4) Called the attraction roller). The peripheral wall portion 4a of the suction roller 4 is provided with a winding portion x1 for winding the conveyance belt 2 and a non-winding portion y1 for not causing the conveyance belt 2 to be wound. The suction roller 4 is hollow, and the hollow portion is an air suction portion for causing a suction attraction to the conveyance belt 2 at a position corresponding to the winding portion x1. In the peripheral wall portion 4a of the attraction roller 4, for example, a hard rubber is coated by a lining. [0022] In the inner space of the conveyance belt 2, a partition member 5 that surrounds the non-winding portion y1 is disposed at a position facing the non-winding portion y1 with a gap therebetween. The partition member 5 is a plate-like body that is elongated in the width direction (a direction perpendicular to the conveyance direction) and is made of a metal plate (for example, a steel plate). The upper end of the partition member 5 is adjacent to or in contact with the upstream side belt portion 2a on the upstream side of the winding portion x1 of the conveyance belt 2, and the lower end of the partition member 5 is in proximity to or in contact with the conveyance belt 2. The downstream side belt portion 2b on the downstream side of the portion x1. In other words, the partition member 5 is hung between the upstream side belt portion 2a and the downstream side belt portion 2b, and a closed cross section in which the suction roller 4 is housed by the conveyance belt 2 and the partition member 5 is formed. Further, among the conveyance belts 2, the portion corresponding to the winding portion x1 is a direction change belt portion 2c that changes the conveyance direction of the protective sheet P. [0023] In the present embodiment, the partition member 5 has a flat plate shape, but is not limited thereto. For example, the partition member 5 may have a partial cylindrical surface shape along the peripheral wall portion 4a of the suction roller 4 (a portion other than the circumferential groove 4b (refer to FIG. 2 to be described later)). In this case, it is easy to arrange the partition member 5 close to the non-winding portion y1. [0024] In the lower side of the upstream side belt portion 2a of the conveyance belt 2, the box-shaped body 6 is disposed close to or in contact with the upstream side belt portion 2a. The internal space of the box-shaped body 6 is an air suction portion for generating a negative pressure attraction force on the upper surface of the upstream side belt portion 2a. [0025] The hollow portion of the suction roller 4 and the inner space of the box-shaped body 6 communicate with the vacuum generating source (not shown) through the suction hose 7. In the present embodiment, the space s1 between the partition member 5 and the non-winding portion y1 is also communicated with the vacuum generating source through the suction hose 7. Specifically, the suction hose 7 is connected to a through hole (not shown) provided in the partition member 5, and the air in the space s1 between the partition member 5 and the non-winding portion y1 is sucked from the partition member 5 side. Further, the space s1 between the partition member 5 and the non-winding portion y1 may be communicated with the vacuum generating source without passing through the suction hose 7. That is, the air of the space s1 may not be directly attracted. However, in the viewpoint of greatly increasing the suction force of the negative pressure, it is preferable to suck the air in the space s1 between the partition member 5 and the non-winding portion y1 from the partition member 5 side. As shown in FIG. 2, a plurality of through holes 8 are formed in the conveyance belt 2 across the entire circumference, and a through-pressure hole 8 is formed by the through holes 8 . [0027] In the peripheral wall portion 4a of the suction roller 4, a plurality of circumferential grooves 4b are formed, and in the bottom wall portions of the circumferential grooves 4b, a plurality of through holes 9 communicating with the hollow portions are formed. The arrangement pitch in the width direction of the plurality of circumferential grooves 4b formed in the suction roller 4 is set to be the same as the arrangement pitch in the width direction of the plurality of through holes 8 formed in the conveyance belt 2. [0028] In the upper wall portion 6a of the box-shaped body 6, a plurality of slits 10 which are long in the conveyance direction and communicate with the internal space are formed in parallel. The arrangement pitch in the width direction of the plurality of slits 10 forming the box-shaped body 6 is set to be the same as the arrangement pitch in the width direction of the plurality of circumferential grooves 4b formed in the suction roller 4. Therefore, the slit 10 and the circumferential groove 4b are arranged in a single row, that is, all in a plurality of rows, and these are arranged along the movement locus of the through holes 8 formed in the plurality of rows of the conveyance belt 2. Further, instead of the slit 10, the through holes may be formed in a row and arranged in parallel. [0029] The space in the circumferential groove 4b is in direct communication with the space s1 between the partition member 5 and the non-winding portion y1. Further, the space in the circumferential groove 4b is also indirectly communicated with the space s1 between the partition member 5 and the non-winding portion y1 by passing through the through hole 9 and the hollow portion of the suction roller 4. [0030] Next, a method of manufacturing a glass sheet using the separation device 1 configured as above will be described. [0031] As shown in Fig. 1, first, the glass sheet G that has been trimmed (cutting treatment) up to the predetermined size is transferred to the conveyance belt 2 while being placed on the protective sheet P. . The transfer to the conveyance belt 2 is automatically performed by the operator manually or by a conveyance means disposed on the upstream side of the conveyance belt 2. The cutting treatment of the glass sheet G is performed by cutting the bending stress including the scribing process and the folding process. [0032] After the transfer, the front end portions of the protective sheet P and the glass sheet G are located on the upstream side of the upstream side belt portion 2a of the conveyance belt 2. In this state, the protective sheet P and the glass sheet G are conveyed toward the downstream side by the conveyance belt 2. Here, the air is often passed from the plurality of through holes 8 of the upstream side belt portion 2a, and the plurality of slits 10 formed in the upper wall portion 6a of the box-shaped body 6 are directed toward the internal space (air suction portion) of the box-shaped body 6 attract. Therefore, the protective sheet P which becomes the lower surface of the glass plate G is conveyed in the horizontal direction by the conveyance belt 2 in the state which adsorbed the conveyance belt 2 by the negative pressure attraction. After that, the leading end portion of the protective sheet P passes through the upstream side belt portion 2a and reaches the direction changing belt portion 2c by the conveyance in the lateral direction by the conveyance belt 2. Here, the air also constantly shifts the plurality of through holes 8 of the belt portion 2c from the direction, and passes through the through holes 9 in the plurality of circumferential grooves 4b of the roller 4 and the bottom wall portion thereof, toward the hollow portion of the suction roller 4 (air suction) Department) is attracted. At this time, the non-winding portion y1 side of the suction roller 4 is surrounded by the partition member 5, and the air in the space s1 between the partition member 5 and the non-winding portion y1 is sucked from the partition member 5 side. Therefore, it is possible to suppress the flow of air from the non-winding portion y1 side toward the hollow portion of the suction roller 4, and it is possible to generate a high negative pressure attraction force on the side of the winding portion x1. As a result, the tip end portion of the protective sheet P is introduced into the direction changing belt portion 2c of the conveyance belt 2 by the suction of the negative pressure, and is guided downward as indicated by the arrow b. On the other hand, the glass sheet G is conveyed in the horizontal direction by the conveyance belt 2, and is conveyed to the conveyance means C which manufactures the related processing platform W. [0034] Immediately below the downstream end portion of the conveyance belt 2, a gas (for example, air) is ejected from the nozzle 11 to the protective sheet P introduced downward, and the protective sheet P is peeled off from the conveyance belt 2. In the present embodiment, the protective sheet P is peeled off from the conveyance belt 2 before reaching the downstream end of the direction change belt portion 2c corresponding to the downstream end of the corresponding winding portion x1, but is not limited thereto. For example, the protective sheet P may be peeled off from the conveyance belt 2 at the downstream end of the direction change belt portion 2c or the subsequent downstream side belt portion 2b. [0035] At the stage where the rear end portion of the protective sheet P passes the downstream end portion of the conveyance belt 2, the protective sheet P peeled off from the conveyance belt 2 is collected by the weight drop toward the collection box or the like, and the glass sheet is recovered. G is completely transported to the transport means C and transported by the operation of the transport means C. Thereby, the protective sheet P is completely separated and removed from the glass sheet G. (Second Embodiment) As shown in Figs. 3 and 4, the separation device 21 of the protective sheet of the second embodiment and the method of manufacturing the glass sheet are different from the first embodiment in that they are separated. The construction of the member 22. Hereinafter, the disparate structure, that is, the partition member 22 will be mainly described, and a detailed description of the common configuration will be omitted. Further, the common configuration shown in Figs. 3 and 4 is the same as that of the first embodiment. In the second embodiment, the partition member 22 is provided so as to be disposed to face the non-winding portion y1 of the suction roller 4 at an interval, and is attached to the upstream side belt portion 2a of the conveyance belt 2 a first wall portion 22a between the downstream side belt portions 2b; and a second wall portion (an upper wall portion and a lower wall portion extending from the upper and lower ends of the first wall portion 22a toward the suction roller 4 side) Lower wall portion 22b. Therefore, since the through hole 8 of the upstream side belt portion 2a and the through hole 8 of the downstream side belt portion 2b are respectively blocked by the second wall portion 22b at the position corresponding to the second wall portion 22b, it is possible to improve The suction attraction force generated by the side of the winding portion x1 of the suction roller 4 is attracted. The second wall portion 22b is a tip end portion on the side of the suction roller 4, and includes a resin portion 23 elongated in the width direction. The resin portion 23 is formed, for example, of a resin such as an engineering plastic or an elastic rubber. The main body (the main body of the first wall portion 22a and the second wall portion 22b) of the partition member 22 other than the resin portion 23 is formed of metal. The resin portion 23 is, for example, fixed to the body of the partition member 22 by a bolt or the like. Here, it is preferable that the tip end portion of the second wall portion 22b is as close as possible to the attraction roller 4. However, when the tip end portion of the second wall portion 22b is made of metal, the suction roller 4 may have the tip end portion of the second wall portion 22b and the suction roller 4 when the dimensional accuracy and assembly accuracy of the partition member 22 are insufficient. Loss of contact. When the resin portion 23 is provided at the tip end portion of the second wall portion 22b, the dimensional accuracy and assembly accuracy of the partition member 22 are insufficient, and since the resin portion 23 can be positively deformed or worn, the suction roller 4 can be suppressed. Loss. Therefore, even if the dimensional accuracy and assembly accuracy of the partition member 22 are insufficient, the suction force of the negative pressure can be ensured. Further, the resin portion 23 may be omitted. Alternatively, all of the second wall portion 22b or all of the partition member 22 may be formed of a resin. Here, it is preferable that the air that sucks the space s2 between the partition member 22 and the non-winding portion y2 from the side of the partition member 22 is preferable. (Third Embodiment) As shown in FIGS. 5 and 6, the separation device 31 of the protective sheet of the third embodiment and the method of manufacturing the glass sheet are different from the first embodiment in that they are separated. The construction of the member 32. Hereinafter, a description will be given focusing on the different configuration, that is, the partition member 32, and a detailed description of the common configuration will be omitted. Further, the common configuration shown in Figs. 5 and 6 is the same as that of the first embodiment. [0041] In the third embodiment, the partition member 32 is provided so as to be disposed to face the non-winding portion y1 of the suction roller 4 at an interval, and is attached to the upstream side belt portion 2a of the conveyance belt 2 a first wall portion 32a between the downstream side belt portions 2b; and a second wall portion (an upper wall portion and a lower wall portion extending from the upper and lower ends of the first wall portion 32a toward the suction roller 4 side) a lower wall portion 32b; and a third wall portion (side wall portion) made of metal covering the opening portions at both ends in the width direction of the space s3 surrounded by the first wall portion 32a, the second wall portion 32b, and the non-winding portion y1 32c. The tip end portion of the third wall portion 32c on the side of the suction roller 4 is formed in an arc shape along the shape of the peripheral wall portion 4a of the suction roller 4. In this case, since the partition member 32 has a box shape in which only the side of the suction roller 4 is opened, the non-winding portion y1 side of the suction roller 4 can be covered with substantially no gap. Therefore, it is possible to surely suppress the flow of air from the non-winding portion y1 side into the hollow portion of the suction roller 4. Here, it is preferable that the air that sucks the space s3 between the partition member 32 and the non-winding portion y1 from the side of the partition member 32 is preferable. In the tip end portion of the second wall portion 32b, the resin portion 33 may be provided as shown in the example, and the resin portion 33 may be omitted. A resin portion may be provided at the tip end portion of the third wall portion 32c. Alternatively, all of the second wall portion 32b and all of the third wall portion 32c or the partition member 32 may be formed of a resin. (Fourth Embodiment) As shown in Fig. 7, the separation device 41 of the protective sheet of the third embodiment includes a conveyance belt 42 provided with a plurality of through holes (not shown), and is wound up. The conveyor belt 42 has a total of three rotating rollers 43, 44, and 45. The conveyance belt 42 is driven by the rotating rollers 43, 44, 45. The rotating roller 44 among the rotating rollers 43, 44, 45 is a suction roller (hereinafter, the rotating roller 44 is referred to as a suction roller). Since the configuration of the attraction roller 44 is the same as that of the suction roller 4 of the first embodiment, detailed description thereof will be omitted. [0044] The conveyance belt 42 is provided on the upstream side of the winding portion x2 of the peripheral wall portion 44a of the suction roller 44, and the conveyance direction is the upstream side belt portion 42a in the lateral direction; and the winding of the suction roller 44 is provided. On the downstream side of the portion x2, the conveyance direction is the downward downstream belt portion 42b; and the position corresponding to the winding portion x2 of the suction roller 44 is changed, and the conveyance direction is changed to the direction of the belt portion 42c. Therefore, the conveyance direction of the conveyance belt 42 is the horizontal direction of the upstream side belt part 42a, and the direction change belt part 42c is gradually shifted from the horizontal direction downward direction, and the downstream side belt part 42b is the downward direction. [0045] In the inner space of the conveyance belt 42, a partition member 46 that surrounds the non-winding portion y2 is disposed at a position facing the non-winding portion y2 of the suction roller 44 at intervals. The upper end of the partition member 46 is adjacent to or in contact with the upstream side belt portion 42a of the conveyance belt 42, and the lower end of the partition member 46 is a downstream side belt portion 42b that approaches or contacts the conveyance belt 42. In other words, the partition member 46 is hung between the upstream side belt portion 42a and the downstream side belt portion 42b, and a closed cross section in which the suction roller 44 is housed by the conveyance belt 42 and the partition member 46 is formed. Further, the partition member 46 may have a wall portion (corresponding to the second wall portion) extending along the upstream side belt portion 42a and the downstream side belt portion 42b, even if the partition member 46 and the non-winding portion y2 are provided. The wall portion (corresponding to the third wall portion) covered by the openings at both ends in the width direction of the space s4 may be used. The first box-shaped body 47 is disposed below the upstream side belt portion 42a, and the second box-shaped body 48 is disposed inside the downstream side belt portion 42b. Since the configuration of the box-shaped bodies 47 and 48 is substantially the same as that of the box-shaped body 6 of the first embodiment, detailed description thereof will be omitted. [0047] The hollow portion of the suction roller 44, the inner space of the first box-shaped body 47, the inner space of the second box-shaped body 48, and the space s4 between the partition member 46 and the non-winding portion y2 are transmitted through the soft The tube 49 is in communication with a vacuum generating source (not shown). Further, the space s4 between the partition member 46 and the non-winding portion y2 may be communicated with the vacuum generating source without passing through the suction hose 49. That is, the air of the space s4 may not be directly attracted. However, in the viewpoint of greatly increasing the suction force of the negative pressure, the air that sucks the space s4 is preferable. [0048] A method of manufacturing a glass sheet using the separation device 41 having the above-described configuration, except for the point at which the protective sheet P passes through the direction-converting belt portion 42c, and is transported downward in a state of being adsorbed on the downstream side belt portion 42b. This is the same as the manufacturing method described in the above embodiment. In other words, the glass sheet G separated from the protective sheet P at the downstream end portion of the upstream side belt portion 42a is transported in the lateral direction by the upstream side belt portion 42a, and is transferred to the manufacturing-related processing platform W. Handling means C. Further, the present invention is not limited to the configuration of the above-described embodiment, and is not limited to the above-described operational effects. The present invention can be variously modified without departing from the spirit and scope of the invention. [0050] In the first to third embodiments, the case where the holding angle (central angle) of the conveyance belt in the winding portion of the suction roller is about 180 degrees is described, and in the fourth embodiment, Although the holding angle (central angle) of the conveyance belt in the winding portion of the suction roller is about 90 degrees, the holding angle of the conveyance belt in the winding portion of the suction roller is not limited to these. For example, the holding angle of the conveyance belt in the winding portion of the suction roller may be 90 degrees or more and less than 180 degrees, and may be 90 degrees or less and 180 degrees or more.

[0051]

C‧‧‧Transportation means

G‧‧‧glass plate

P‧‧‧Protective sheet

S1, s2, s3, s4‧‧‧ space

W‧‧‧Manufacture related processing platforms

X1, x2‧‧‧rolling

Y1, y2‧‧‧ non-rolling department

1,21,31,41‧‧‧Separation device

2,42‧‧‧Transportation belt

2a, 42a‧‧‧ upstream belt parts

2b, 42b‧‧‧ downstream belt parts

2c, 42c‧‧‧ direction conversion belt parts

3‧‧‧Rotating roller

4,44‧‧‧Attraction roller (rotary roller)

4a, 44a‧‧‧The wall

4b‧‧‧ Zhougou

5,22,32,46‧‧‧ partition members

6‧‧‧ box-shaped body

6a‧‧‧Top wall

7‧‧‧ suction hose

8,9‧‧‧through holes

10‧‧‧ slitting

11‧‧‧Nozzles

22a, 32a‧‧‧ first wall

22b, 32b‧‧‧ second wall

23,33‧‧‧Resin Department

32c‧‧‧ third wall

43,45‧‧‧Rotating roller

44‧‧‧Attraction roller (rotary roller)

47‧‧‧The first box

48‧‧‧Second box

49‧‧‧ suction hose

[Fig. 1] A side view showing a separating device of a protective sheet of the first embodiment. [Fig. 2] A plan view showing a separating device of the protective sheet of the first embodiment. [Fig. 3] A perspective view of a partition member of the separating device of the protective sheet of the second embodiment. [Fig. 4] An enlarged side view showing the vicinity of the downstream end portion of the conveyance belt of the separation sheet of the protective sheet of the second embodiment. [Fig. 5] A perspective view of a partition member of a separating device for a protective sheet of a third embodiment. [Fig. 6] An enlarged side view showing the vicinity of the downstream end portion of the conveyance belt of the separation sheet of the protective sheet of the third embodiment. [Fig. 7] A side view showing a separating device of the protective sheet of the fourth embodiment.

Claims (7)

A method for producing a glass sheet, comprising: a suction portion of a downstream side of a conveyance belt that conveys a glass sheet placed on a protective sheet, and having a suction portion that is wound around a part of the peripheral wall portion The roller is a process of separating the protective sheet from the glass sheet by adsorbing the protective sheet through the conveyance belt, and is characterized in that the conveyance belt is not rolled in the peripheral wall portion of the suction roller. The partition member surrounded by the hanging non-winding portion forms a closed cross section in which the suction roller is housed by the conveyance belt and the partition member. The method for producing a glass sheet according to the first aspect of the invention, wherein the partition member is disposed to face the non-winding portion at intervals, and wherein the rack is located in the transport belt a first wall portion between an upstream side belt portion on the upstream side of the winding portion and a downstream side belt portion on the downstream side thereof; and a suction from the upper and lower ends of the first wall portion along the conveying belt a second wall portion extending on the roller side. The method for producing a glass sheet according to claim 2, wherein the partition member includes both ends in a width direction of a space surrounded by the first wall portion, the second wall portion, and the non-winding portion. a third wall portion covered by the opening. The method for producing a glass sheet according to the second or third aspect of the invention, wherein the second wall portion has a metal body and a tip end portion on the suction roller side of the second wall portion. A resin portion formed of a resin. The method for producing a glass sheet according to any one of claims 1 to 4, wherein the air in a space between the partition member and the non-winding portion is sucked from the partition member side. The method for producing a glass sheet according to claim 5, wherein a plurality of circumferential grooves are formed in a peripheral wall portion of the suction roller. A separation device for protecting a sheet, comprising: a conveyance belt that conveys a glass sheet placed on the protective sheet; and a roll having a portion of the peripheral wall portion that is wound around the conveyance belt at a downstream end portion of the conveyance belt The suction roller of the hanging portion separates the protective sheet from the glass sheet by the suction roller passing through the transport belt to adsorb the protective sheet, and is characterized in that: the peripheral wall portion of the suction roller is provided The partition member surrounded by the non-winding portion in which the conveyance belt is not wound is formed in a closed cross section in which the suction roller is housed by the conveyance belt and the partition member.