JP6112301B2 - Glass film ribbon manufacturing apparatus, glass film ribbon manufacturing method, and glass roll - Google Patents

Description

  The present invention relates to a technique for optimizing the traveling direction and flow speed of a glass film ribbon transferred from an upstream side in a conveyance path of a glass film ribbon to a lateral conveyance unit.

  As is well known, it is used for the production of flat glass used for flat panel displays (FPD) such as liquid crystal displays, plasma displays, and organic EL displays, flat glass used for organic EL lighting, and tempered glass that is a constituent element of touch panels. The reality is that thinning of glass plates used for glass plates and solar panel panels is promoted.

  In order to cope with such a situation, in recent years, development is proceeding so that these glass plates can be used as glass films having a thickness of 300 μm or less or 200 μm or less. In manufacturing this type of glass film, the down draw method represented by the overflow down draw method, the slot down draw method, the redraw method, and the like, and the float method are used as an example.

  In this type of method, a molten glass is used as a material, and after a glass film ribbon is formed and pulled out by a molding unit, the glass film ribbon is transferred to a horizontal conveyance unit and conveyed in the horizontal direction. An unnecessary part of the glass film ribbon is cut and removed to form a glass roll. More specifically, from the glass film ribbon being transported in the lateral direction by the lateral transport unit, the thick film ears, which are unnecessary portions existing at both ends in the width direction, are cleaved and removed by the cleaving unit. After cutting the ribbon along the planned cutting line extending in the longitudinal direction, one or a plurality of glass film ribbons which are effective portions are wound to form one or a plurality of glass rolls (about the downdraw method) (See Patent Document 1).

  In addition to this, when the glass film ribbon is wound up and removed without removing the ear part, or when the glass film ribbon is wound up and removed after the ear part is removed, In the Roll to Roll process, there is a case where the glass film ribbon is taken out from one of the upstream glass rolls and is taken up by the other downstream glass roll and conveyed in the horizontal direction by the horizontal conveying unit.

  Even in this type of roll to roll process, while the glass film ribbon is transferred to the horizontal conveyance unit and conveyed in the horizontal direction, unnecessary portions existing at both ends in the width direction of the glass film ribbon are cleaved and removed by the cleaving unit. After cutting the glass film ribbon along the planned cutting line extending in the longitudinal direction, the one or more glass rolls obtained by winding up the one or more glass film ribbons as the effective portion are obtained. It has been broken.

JP 2012-211074 A

  By the way, in the downdraw method, as described in Patent Document 1, the glass film ribbon drawn out vertically from the forming portion reaches the horizontal conveying portion through the direction changing portion, and is horizontally transferred by the horizontal conveying portion. While being sent in the direction, the cleaved portion is cleaved along the longitudinal direction of the glass film ribbon. In that case, as for the production equipment of this kind of glass film ribbon, a forming part, a direction change part, and a transverse conveyance part are in the state where it became independent, respectively.

  Therefore, even if these parts are precisely adjusted, it is extremely difficult to eliminate the slight speed difference between the parts, so the flow rate of the glass film ribbon and the speed of each part must be completely the same. Is virtually impossible. As a result, the glass film ribbon is loosened or excessively stretched, so that it is difficult to smoothly feed the cut glass film ribbon and to make the subsequent products and semi-finished products (for example, glass rolls) of high quality. .

  In addition, the feeding direction inherent to this type of glass film manufacturing equipment is usually shifted from the actual flow direction of the glass film ribbon, and is therefore drawn out from the forming section. There is a case where the glass film ribbon flows in a direction deviated from the conveyance direction of the horizontal conveyance unit. When such a situation occurs, the glass film ribbon is twisted between the forming section and the lateral conveyance section, and this causes the problem of causing breakage or breakage of the glass film ribbon. Also have.

  Such a problem also occurs in the roll-to-roll process, even when the glass film ribbon is transferred from the upstream glass roll to the horizontal transport section and is cut while being transported in the horizontal direction. Since the support portion and the lateral conveyance portion are in an independent state, they can occur in the same manner. Also in the float method, even when the glass film ribbon drawn out from the float bath is passed through the annealer in the horizontal direction and then passed, it is transferred to the horizontal transfer unit and cut while being transferred in the horizontal direction. Since the forming part composed of the float bath and the annealer and the lateral conveying part are in an independent state, they can occur in the same manner.

  In order to cope with the above-mentioned situation, the present invention enables appropriate adjustment of the flow speed and the traveling direction of the glass film ribbon, avoids breakage, etc., and can smoothly manufacture high-quality glass film products or semi-finished products. The challenge is to do so.

  The first apparatus according to the present invention, which was created to solve the above problems, transports the glass film ribbon transferred from the upstream side of the transport path of the glass film ribbon to the lateral transport unit in the lateral direction by the lateral transport unit. However, in the glass film ribbon manufacturing apparatus configured to cleave along the planned cutting line extending in the longitudinal direction of the glass film ribbon, the lateral conveyance unit includes upstream conveyance means disposed on the upstream side, A downstream conveying means disposed on the downstream side of the upstream conveying means and having a cleaving portion that performs the cleaving on the conveying path, and a contact area between the conveying support surface of the upstream conveying means and the glass film ribbon is The contact area with the glass film ribbon on the transport support surface of the downstream transport means is characterized by being smaller. Here, the above-mentioned “lateral direction” means a horizontal direction or a direction inclined in the range of less than 45 ° up and down with respect to the horizontal direction (preferably, a direction inclined in a range of less than 30 °). Meaning (hereinafter the same). Moreover, said "conveyance support surface" means the surface which supports a glass film ribbon for conveyance (hereinafter the same). Furthermore, the above-mentioned “contact area with the glass film ribbon on the conveyance support surface” may be the sum of the contact areas in the entire area of the conveyance support surface, or with the glass film ribbon per unit area on the conveyance support surface. May be the contact area.

  According to such a configuration, since the contact area with the glass film ribbon on the transport support surface of the upstream transport means is smaller than the contact area with the glass film ribbon on the transport support surface of the downstream transport means, the glass film ribbon Is easy to slide in the width direction and the longitudinal direction with respect to the transport support surface of the upstream transport means. In that case, the upstream part of the transport path of the glass film ribbon, the upstream transport means of the lateral transport part, and the downstream transport means of the lateral transport part are in an independent state. There will be a deviation (speed difference) between the speed imparted by each of the parts and the flow speed of the glass film ribbon. However, this shift is caused by the glass film ribbon slidingly moving in the transport direction on the transport support surface of the upstream transport unit when the glass film ribbon is transferred to the upstream transport unit of the lateral transport unit and transported. Absorbed. Thereby, the slack of the glass film ribbon, excessive tension, etc. resulting from said speed difference are suppressed efficiently. In addition, it is a case where the traveling direction of the glass film ribbon inherently possessed by the upstream side portion of the lateral conveying portion in the conveying path of the glass film ribbon does not match the traveling direction of the actual glass film ribbon. In addition, when the glass film ribbon is transferred to and transported by the upstream transport unit of the lateral transport unit, the glass film ribbon slides in the width direction on the transport support surface of the upstream transport unit. Is absorbed by Thereby, the twist etc. which can generate | occur | produce originally in a glass film ribbon become difficult to produce as much as possible. As a result, breakage of the glass film ribbon and the like are suppressed, and a high-quality glass film product or semi-finished product (for example, a glass roll) can be manufactured smoothly. Moreover, since the glass film ribbon is not easily slidable in the width direction and the longitudinal direction as in the upstream side conveyance unit on the conveyance support surface of the downstream side conveyance unit, Cleaving is performed well.

  Moreover, the 2nd apparatus which concerns on this invention created in order to solve the said subject WHEREIN: The glass film ribbon transferred to the horizontal conveyance part from the upstream of the conveyance path | route of a glass film ribbon is a horizontal direction in the said horizontal conveyance part. In the glass film ribbon manufacturing apparatus configured to cleave along a planned cutting line extending in the longitudinal direction of the glass film ribbon while being conveyed, the lateral conveying unit includes upstream conveying means disposed on the upstream side, And a downstream conveying means disposed on the downstream side of the upstream conveying means and having a cleaving portion for cleaving on the conveying path, and static friction with the glass film ribbon on the conveying support surface of the upstream conveying means The coefficient is characterized by being smaller than the coefficient of static friction with the glass film ribbon on the transport support surface of the downstream transport means.

  Even in such a configuration, the glass film ribbon easily slides in the width direction and the longitudinal direction with respect to the transport support surface of the upstream transport unit. Therefore, this apparatus can also enjoy the same effects as those of the first apparatus described above.

  In the above configuration, the upstream transport unit may include a fluid ejecting unit that ejects fluid from the inside of the transport support surface toward the back surface of the glass film ribbon.

  In this way, since the glass film ribbon floats from the transport support surface of the upstream transport means by the jet of fluid, the contact area between the transport support surface and the glass film ribbon can be efficiently reduced. In addition, the coefficient of static friction with the glass film ribbon on the conveyance support surface can be efficiently reduced. In this case, it is preferable that the glass film ribbon does not completely float from the transport support surface of the first transport means, but partially floats in contact with the transport support surface. As the fluid in this case, it is preferable to use a gas composed of air or an inert gas such as nitrogen. However, even a liquid such as water can be used if the waste liquid treatment can be appropriately performed. is there.

  In the above configuration, the transport support surface of the downstream transport unit is stretched around the upper surface of the downstream transport unit and is sent in an open loop following the upper surface of the downstream transport unit. It can be the upper surface of the sheet ribbon it has.

  In this way, since the sheet ribbon is sent in an open loop shape, even if a foreign substance such as glass powder once adheres to the sheet ribbon due to the cleaving of the glass film ribbon, the part where the foreign substance has adhered returns again. Therefore, there is no risk of contact scratches on the glass film ribbon, and a high-quality glass film ribbon can be sent downstream. Moreover, since the sheet ribbon is stretchable, even if a slight speed difference occurs with the flow speed of the glass film ribbon, the speed difference is absorbed to eliminate looseness and excessive tension. be able to. Furthermore, as compared with the case where the glass film ribbon is levitated by the fluid described above, the glass film ribbon does not flutter or twist, and the inconvenience that the cutting direction is not fixed in a straight line is avoided.

  In this case, the sheet ribbon may be adsorbed and held on the upper surface portion of the downstream conveying unit in a state where the sheet ribbon can expand and contract.

  In this way, fluttering and twisting of the glass film ribbon can be eliminated while enjoying the effect of absorbing the speed difference described above due to the fact that the sheet ribbon can be expanded and contracted, and the glass film ribbon is more straightened. It is possible to cleave.

  In this case, the sheet ribbon is preferably formed of a foamed resin.

  If it does in this way, it will become advantageous when securing the feeding nature and stretchability at the time of sending a sheet ribbon in the shape of an open loop. In addition, it is preferable that foaming resin consists of resin, such as polyethylene and a polypropylene, and a foaming magnification is 5 times-100 times.

  In the above configuration, on the upstream side of the horizontal conveyance unit in the conveyance path of the glass film ribbon, the direction conversion is performed to change the direction of the glass film ribbon drawn out from the molding unit in the vertical direction to conveyance in the horizontal direction. The part may be disposed. Here, the “molding part” includes not only a molded body in the downdraw method and a main heating part in the redraw method, but also a heat treatment part such as an annealer that is arranged on the downstream side thereof and performs a predetermined heat treatment (hereinafter referred to as “the molding part”). The same).

  In this way, in the downdraw method or the redraw method, the forming unit, the direction changing unit, the upstream conveying unit of the horizontal conveying unit, and the downstream conveying unit are in an independent state, There may be a deviation (speed difference) between the speed applied by each part and the flow speed of the glass film ribbon. However, this deviation is caused when the glass film ribbon drawn in the vertical direction from the forming unit and passed through the direction changing unit is transferred to the upstream conveying unit of the horizontal conveying unit and conveyed, thereby conveying the supporting surface of the upstream conveying unit. The glass film ribbon is absorbed by sliding in the transport direction above. In addition, even if the traveling direction of the glass film ribbon that the molded part and the direction changing part originally have and the traveling direction of the actual glass film ribbon do not match, the deviation due to this mismatch is also When the glass film ribbon is transported by the upstream transport unit, the glass film is absorbed by sliding in the width direction on the transport support surface of the upstream transport unit.

  On the other hand, the first method according to the present invention, which was created to solve the above-described problems, is the method of transferring the glass film ribbon transferred from the upstream side of the conveyance path of the glass film ribbon to the downstream side conveyance unit. In the glass film ribbon manufacturing method of cutting along the planned cutting line extending in the longitudinal direction of the glass film ribbon while being transported in the lateral direction, in the lateral transport section, upstream transport means disposed on the upstream side, and Downstream conveying means disposed on the downstream side of the upstream conveying means and having a cleaving portion for performing the cleaving on the conveying path and having a larger contact area with the glass film on the conveying support surface than the upstream conveying means. And is characterized in that the glass film ribbon is conveyed in the lateral direction.

  Since the first method has substantially the same configuration as the first device described above, it can receive substantially the same operational effects as the first device described above.

  Further, the second method according to the present invention, which was created to solve the above-mentioned problems, is characterized in that the glass film ribbon transferred from the upstream side of the glass film ribbon transfer path to the downstream side transfer unit is transferred to the horizontal transfer unit. In the glass film ribbon manufacturing method of cutting along the planned cutting line extending in the longitudinal direction of the glass film ribbon while being transported in the lateral direction, in the lateral transport section, upstream transport means disposed on the upstream side, and Downstream conveying means disposed on the downstream side of the upstream conveying means and having a cleaving portion for cleaving on the conveying path and having a larger coefficient of static friction with the glass film on the conveying support surface than the upstream conveying means. And is characterized in that the glass film ribbon is conveyed in the lateral direction.

  Since the second method has substantially the same configuration as the above-described second device, it can enjoy substantially the same operational effects as the above-described second device.

  In the above method, on the upstream side of the horizontal conveyance unit in the conveyance path of the glass film ribbon, the direction of the glass film ribbon drawn out vertically from the forming unit is changed to conveyance in the horizontal direction by the direction conversion unit. And after that, you may make it transfer the said glass film ribbon to the said horizontal conveyance part.

  In this case, in the downdraw method, the forming unit, the direction changing unit, the upstream conveying unit of the lateral conveying unit, and the downstream conveying unit are provided in an independent state. The same effect can be obtained.

  In the above method, after the glass film ribbon is transported in the lateral direction by the downstream transporting means, the glass film ribbon is wound on the protective sheet while being wound on the winding part disposed on the downstream side. Also good.

  In this way, after the glass film ribbon is transported in the lateral direction by the downstream transporting means, the glass film ribbon that has been properly fed to the downstream side is further wound on the protective sheet at the winding part. Therefore, it is possible to obtain a high-quality glass roll having no deviation in winding direction and variation in winding tension.

  As described above, according to the present invention, the flow speed and the traveling direction of the glass film ribbon are appropriately adjusted to avoid breakage and the like, and a high-quality glass film product or semi-finished product is smoothly manufactured. It will be.

It is a schematic side view which shows the whole structure of the glass film ribbon manufacturing apparatus which concerns on 1st embodiment of this invention. It is an expanded vertical side view which shows the principal part of the glass film ribbon manufacturing apparatus which concerns on 1st embodiment of this invention. It is a perspective view which shows the glass roll manufactured using the glass film ribbon manufacturing apparatus which concerns on 1st embodiment of this invention. It is a schematic side view which shows the whole structure of the glass film ribbon manufacturing apparatus which concerns on 2nd embodiment of this invention. It is a schematic side view which shows the principal part structure of the glass film ribbon manufacturing apparatus which concerns on 3rd embodiment of this invention.

  Hereinafter, a glass film ribbon manufacturing apparatus (hereinafter simply referred to as a manufacturing apparatus) according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic side view schematically showing the overall configuration of the manufacturing apparatus 1 according to the first embodiment of the present invention. As shown in the figure, the manufacturing apparatus 1 includes, as main components, a molding unit 2 that molds the glass film ribbon G, and a direction conversion unit that converts the traveling direction of the glass film ribbon G from the lower side in the vertical direction to the horizontal direction. 3, a horizontal transport unit 4 that transports the glass film ribbon G in the lateral direction after direction change, a cleaving unit 5 that cleaves the ears of the glass film ribbon G while transporting in the lateral direction by the lateral transport unit 4, and a cleaving unit 5 and a winder 6 that winds the glass film ribbon G3 that has been removed by cutting off the ears into a roll to produce a glass roll R. In addition, it is preferable that the thickness of the glass film ribbon (effective part) G3 from which the ear part has been cut off is 300 μm or less, 200 μm or less, or 100 μm or less.

  The molded part 2 includes a molded body 7 having a substantially wedge-shaped cross section with an overflow groove 7a formed at the upper end, a cooling roller 8 that is disposed immediately below the molded body 7 and sandwiches the ribbon-shaped molten glass Gb from both front and back sides, It is comprised from the annealer 10 which has the annealer roller 9 arrange | positioned directly under the cooling roller 8 and arrange | positioned by the several steps of the up-down direction. In detail, the main molding part 2a when attention is paid to the action of the molding part 2 causes the molten glass Ga overflowing from the upper side of the overflow groove 7a to flow down along both side surfaces, and merges at the lower end to form a ribbon shape. And a cooling roller 8 that restricts the shrinkage in the width direction of the ribbon-shaped molten glass Gb to form a glass film ribbon G having a predetermined width. And the said shaping | molding part 2 is comprised by arrange | positioning the annealer 10 for performing a distortion removal process with respect to the glass film ribbon G below this main shaping | molding part 2a.

  Below the annealer 10, a pulling roller 11 that sandwiches the glass film ribbon G from both the front and back sides is disposed. Between the pulling roller 11 and the cooling roller 8, or between the pulling roller 11 and any one of the annealing rollers 9. In the meantime, the tension | tensile_strength for assisting making the glass film ribbon G thin is provided. In addition, when the thickness of the glass film ribbon G is large, the pulling roller 11 serves as a support roller that prevents the glass film ribbon G from extending downward due to its own weight.

  Below the pulling roller 11, there is provided a direction changing unit 3 that converts the traveling direction of the glass film ribbon G from the lower side in the vertical direction to the horizontal direction. A plurality of guide rollers 12 serving as guide members for guiding the direction change of the glass film ribbon G are arranged in a curved shape on the back side of the glass film ribbon G in the direction changing portion 3. The glass film ribbon G is in contact with the back surface. Note that these guide rollers 12 may support the glass film ribbon G in a non-contact manner by ejecting an airflow or the like onto the back surface of the glass film ribbon G. Further, the guide member may be one in the form of a belt conveyor formed in a curved shape, or the glass film ribbon G may be formed without arranging the guide member in the direction changing portion 3. The direction may be changed without being affected by the external force from the back side. Further, some of the plurality of guide rollers 12 may be in contact with the back surface of the glass film ribbon G. Furthermore, the guide roller 12 may support only a part of the glass film ribbon G (for example, both ends in the width direction).

  A lateral conveyance unit 4 that conveys the glass film ribbon G in the lateral direction is provided in front of the direction conversion unit 3 in the traveling direction (downstream side). In the lateral conveyance section 4, conveyance means 13a, 13b, and 13c including three belt conveyors are arranged in series in the conveyance direction. That is, the horizontal transport unit 4 includes a main transport unit 13b, a first transport unit 13a arranged upstream of the main transport unit 13b and up to the direction changing unit 3, and the main transport unit 13b. Second conveying means 13c arranged at a position downstream of the winding unit 6 is arranged. Therefore, between the direction change part 3 and the winding part 6, the 1st conveyance means 13a, the main conveyance means 13b, and the 2nd conveyance means 13c are arranged adjacent to each other sequentially from the upstream side. Yes. In the present embodiment, the upstream conveying unit of the horizontal conveying unit 4 corresponds to the first conveying unit 13a, and the downstream conveying unit of the horizontal conveying unit 4 includes the main conveying unit 13b and the second conveying unit 13c. It consists of and. In the present embodiment, the horizontal transport unit 4 is configured to transport the glass film ribbon G in the horizontal direction, but within a range of less than 45 ° in the vertical direction with respect to the horizontal direction (preferably 30 It may be inclined within a range of less than °.

  FIG. 2 is an enlarged vertical sectional side view showing the configuration of the horizontal conveyance unit 4 in detail. As shown in the figure, the first conveying means 13a is an air injecting means (not shown) for injecting air from the inner side of the conveying support surface 13ab of the belt 13aa toward the back surface of the glass film ribbon G as indicated by an arrow a. It has. Accordingly, while the glass film ribbon G is being transported by the first transport means 13a, the glass film ribbon G is lifted from the transport support surface 13ab, and the floating mode is the transport support surface 13ab and the glass film. The ribbon G is in partial contact with the ribbon G without completely separating.

  The main conveying means 13b has a sheet ribbon Sb made of a foamed resin having a stretchable sheet ribbon wound around the upper surface of the belt 13ba, and the upper surface of the sheet ribbon Sb conveys and supports the glass film ribbon G. The surface is Sbb. A sheet roll rb formed by winding the sheet ribbon Sb is disposed below the main conveying unit 13b, and the sheet ribbon Sb taken out upward from the sheet roll rb is an upstream end portion of the belt 13ba. Is wound around the upper surface of the belt 13ba and is sent downward from the downstream end of the belt 13ba. Therefore, the sheet ribbon Sb is configured to be fed in an open loop shape (or a closed loop shape (not shown)) following the upper surface portion of the belt 13ba. The sheet ribbon Sb is adsorbed and held by negative pressure on the upper surface of the belt 13ba in a state where the sheet ribbon Sb can be expanded and contracted. The foamed resin that forms the sheet ribbon Sb is made of a resin such as polyethylene or polypropylene, and the expansion ratio is 5 to 100 times.

  In this case, as shown in FIG. 1, above the center of the transport path of the main transport means 13b, at both ends of the glass film ribbon G in the width direction (the direction along the front and back surfaces and the direction perpendicular to the transport direction). A cleaving portion 5 that cleaves the thick-walled ears G1 and G2 to be formed is provided. That is, the main conveyance means 13b has the cleaving part 5 which cleaves the ear | edge parts G1 and G2 of the glass film ribbon G on the conveyance path | route. More specifically, the cleaving portion 5 has a laser beam irradiation means 14a for locally heating the boundary between the ear portions G1 and G2 of the glass film ribbon G and the thin effective portion G3 on the center side in the width direction, There is provided a thermal stress cleaving device 14 comprising a mist water jetting means 14b for cooling the heated part by the laser light irradiation means 14a. The cleaved ears G1 and G2 (strictly speaking, unnecessary parts including the ears G1 and G2) are sent obliquely downward with respect to the front in the transport direction and discarded.

  Further, as shown in FIG. 2, the second conveying means 13c has a stretchable sheet ribbon Sc made of foamed resin wound around the upper surface of the belt 13ca, and the upper surface of the sheet ribbon Sc It is set as the conveyance support surface Scb which conveys and supports the glass film ribbon G3 after the cleaving removal of G1 and G2. A sheet roll rc formed by winding the sheet ribbon Sc is disposed below the second conveying unit 13c, and the sheet ribbon Sc taken out from the sheet roll rc is an upstream end of the belt 13ca. The belt 13ca is wound around the upper surface of the belt 13ca and is sent downward from the downstream end of the belt 13ca. Therefore, the sheet ribbon Sc is configured to be fed in an open loop shape (or a closed loop shape (not shown)) following the upper surface portion of the belt 13ca. In this case, the sheet ribbon Sc is not attracted and held on the upper surface of the belt 13ca. The foamed resin that forms the sheet ribbon Sc is made of a resin such as polypropylene or polyethylene, and the expansion ratio is 5 to 100 times.

  Since the three transport means 13a, 13b, and 13c are configured as described above, the contact area with the glass film ribbon G on the transport support surface 13ab of the first transport means 13a is the transport support of the main transport means 13b. It is smaller than the contact area with the glass film ribbon G on the surface Sbb and smaller than the contact area with the glass film ribbon G3 on the transport support surface Scb of the second transport means 13c. Further, the static friction coefficient with the glass film ribbon G on the transport support surface 13ab of the first transport means 13a is smaller than the static friction coefficient with the glass film ribbon G on the transport support surface Sbb of the main transport means 13b, and the second transport means 13c. The coefficient of static friction with the glass film ribbon G3 on the transport support surface Scb is smaller. In this case, regarding the comparison between the contact area in the main transport unit 13b and the contact area in the second transport unit 13c, either one may be larger than the other, or both may be comparable. Also good. In addition, regarding the comparison between the static friction coefficient in the main transport unit 13b and the static friction coefficient in the second transport unit 13c, either one may be larger than the other, or both may be comparable. Good.

  As shown in FIG. 1, on the downstream side of the lateral transport unit 4, the glass film ribbon G <b> 3 that has been transported with the unnecessary portions including the ears G <b> 1 and G <b> 2 removed is wound to form a glass roll R. A take-up section 6 is provided. A sheet roll r formed by winding the protective sheet S is provided below the winding unit 6, and the protective sheet S taken out from the sheet roll r is applied to the glass film ribbon G 3 by the winding unit 6. The glass roll R is manufactured by being rolled up and wound up.

  According to the configuration as described above, in the lateral transport unit 4, each of the contact area and the static friction coefficient with the glass film ribbon G on the transport support surface 13ab of the first transport means 13a existing on the most upstream side is on the downstream side. The glass film ribbon G3 on the transport support surface Scb of the second transport means 13c which is smaller than each of the contact area and static coefficient of friction with the glass film ribbon G on the transport support surface Sbb of the main transport means 13b existing on the downstream side. Are smaller than each of the contact area and the static friction coefficient. Therefore, the glass film ribbon G (G3) is the first transport means 13a that is most slidable in the width direction and the longitudinal direction with respect to the transport support surface.

  In this case, the first transport unit 13a is arranged at a position upstream of the second transport unit 13c and the main transport unit 13b and up to the direction changing unit 3. Therefore, due to the fact that the forming unit 2, the direction changing unit 3, and the transporting means 13a, 13b, and 13c are independent from each other, the speed imparted by these parts and the flow speed of the glass film ribbon G Even if there is a deviation (speed difference) between the first and the second conveying means 13a, the deviation is caused by the glass film on the conveying support surface 13ab of the first conveying means 13a. G is absorbed by sliding movement in the transport direction. Thereby, the slack of the glass film ribbon G, excessive tension, etc. resulting from said speed difference are suppressed efficiently. In addition, even if the traveling direction of the glass film ribbon inherently possessed by the molding unit 2 and the direction converting unit 3 does not match the traveling direction of the actual glass film ribbon G, a shift caused by this mismatch is When the glass film ribbon G is conveyed by the first conveying means 13a, the glass film G is absorbed by sliding in the width direction on the conveying support surface 13ab of the first conveying means 13a. Thereby, the twist etc. which can generate | occur | produce originally in the glass film ribbon G become difficult to produce as much as possible. Therefore, breakage of the glass film ribbon G and the like are suppressed, and a high-quality glass roll R can be manufactured smoothly.

  Moreover, on the conveyance support surface Sbb of the main conveyance means 13b, the glass film ribbon G is not easily slidable in the width direction and the longitudinal direction as in the first conveyance means 13a. The cleaving of the ears G1 and G2 is favorably performed. Further, on the conveyance support surface Scb of the second conveyance means 13b, the glass film ribbon G is not in a state of being easily slid and moved in the width direction and the longitudinal direction as in the first conveyance means 13a. This obstructs the production of the glass roll R.

  As described above, the glass film ribbon G reaches the take-up portion 5 without causing slack, excessive tension, twisting, or the like, and finally, as shown in FIG. A glass roll R wound up in a state where the glass film ribbon G and the protective sheet S overlap can be obtained. The glass roll R obtained in this way has a high quality with very few winding slips and scratches.

  FIG. 4 is a schematic side view schematically showing the overall configuration of the manufacturing apparatus 1 according to the second embodiment of the present invention. The manufacturing apparatus 1 according to the second embodiment differs from that according to the first embodiment described above in that the first conveying means 13a does not include a fluid ejecting means, and the main conveying means 13b and the first None of the two conveying means 13c is provided with a sheet ribbon made of foamed resin. Therefore, in the first transport unit 13a, the main transport unit 13b, and the second transport unit 13c, the upper surfaces of the belts 13aa, 13ba, and 13ca are transport support surfaces 13ab that support transport of the glass film ribbon G (G3). 13bb and 13cb. The static friction coefficient with the glass film ribbon G on the transport support surface 13ab of the first transport means 13a is smaller than the static friction coefficient with the glass film ribbon G on the transport support surface 13bb of the main transport means 13b and the second transport means 13c. It is made smaller than the static friction coefficient with the glass film ribbon G3 in the conveyance support surface 13cb. Therefore, the manufacturing apparatus 1 according to the second embodiment also has substantially the same operational effects as those according to the first embodiment described above. In FIG. 4, the same reference numerals are given to the same constituent elements as those of the manufacturing apparatus 1 according to the first embodiment described above, and the description thereof is omitted.

  In the above embodiment, the travel path of the glass film ribbon G from the direction changing unit 3 to the lateral transport unit 4 does not hang down below the travel path of the glass film ribbon G in the lateral transport unit 4, As shown in FIG. 5, the glass film ribbon G drawn out downward in the vertical direction from the molding unit 2 hangs down below the traveling path in the horizontal conveyance unit 4 in the direction conversion unit 3 and then moves upward. The traveling path to the lateral conveyance unit 4 may be used.

  In the embodiment described above, the present invention is applied to the manufacturing apparatus 1 provided with the forming unit 2 and the direction changing unit 3 on the upstream side of the horizontal conveyance unit 4 in the conveyance path of the glass film ribbon G when the downdraw method is performed. However, in the Roll to Roll process, an upstream glass roll is provided on the upstream side of the lateral transport unit 4 in the transport path of the glass film G, and the downstream glass is taken out from the upstream glass roll while taking out the glass film ribbon. The present invention can be similarly applied to an apparatus configured to perform cleaving while a glass film ribbon is conveyed in a horizontal direction in a horizontal conveying unit while being wound by a roll. In this case, the effective portion of the glass film may be divided into a plurality of rows at the cleaving portion to obtain a plurality of downstream glass rolls.

  Further, in the above embodiment, the overflow downdraw method is adopted to form the glass film ribbon G, but instead, other downdraw methods such as the slot downdraw method, the redraw method, etc. are adopted. It is also possible.

  In addition, according to the present invention, in the float method, after the glass film ribbon drawn from the float bath is sent in the horizontal direction through the annealer, the glass film ribbon is transferred to the horizontal transfer unit and cut in the horizontal direction while being transferred. The present invention can also be applied to an apparatus configured to perform. The forming part in this float process includes not only the float bath but also a heat treatment part such as an annealer that is disposed downstream of the float bath and performs a predetermined heat treatment.

  Moreover, in the above embodiment, in the horizontal conveyance part 4, an upstream conveyance means is comprised by the single 1st conveyance means 13a, and a downstream conveyance means is comprised by the main conveyance means 13b and the 2nd conveyance means 13c. However, among these, the downstream side conveying means may be constituted by only one conveying means corresponding to the main conveying means 13b or three or more conveying means including the main conveying means. Further, the upstream conveying means may be constituted by two or more conveying means as long as the first conveying means 13a is the most upstream conveying means.

  Moreover, although the above embodiment was set as the structure which has the winding-up part 6 which winds up the glass film ribbon G3 which cleaved and removed the ear | edge part with the cleaving part 5 in roll shape, and manufactures the glass roll R, like this The glass film ribbon G3 that has been cut and removed by the cleaving portion 5 without cutting the winding portion 6 is cut into rectangles by a predetermined length in the longitudinal direction, and a plurality of rectangular glass films are interleaved with each other. It is good also as a structure which produces the glass film laminated body which interposes a protective sheet in this.

  Furthermore, in the above embodiment, each conveying means 13 arranged in the horizontal conveying unit 4 is configured by a belt conveyor. However, instead of or in addition to this, a part or all of each conveying means is plural (multiple). ) Rollers may be configured to be appropriately combined with a roller conveyor or a floating conveying means.

DESCRIPTION OF SYMBOLS 1 Glass film ribbon manufacturing apparatus 2 Molding part 3 Direction change part 4 Horizontal conveyance part 5 Cleaving part 6 Winding part 13a First conveyance means 13b Main conveyance means 13c Second conveyance means 13ab Conveyance support surface 13bb Conveyance support surface 13cb Conveyance support surface G Glass film ribbon R Glass roll S Protective sheet Sb Sheet ribbon Sc Sheet ribbon Sbb Conveyance support surface Scb Conveyance support surface

Claims (10)

The glass film ribbon transferred from the upstream side of the conveyance path of the glass film ribbon to the horizontal conveyance unit is cleaved along the planned cutting line extending in the longitudinal direction of the glass film ribbon while being conveyed in the horizontal direction by the horizontal conveyance unit. In the glass film ribbon manufacturing apparatus configured in
Annealer is disposed on the upstream side of the horizontal transport unit in the transport path of the glass film ribbon,
The lateral transport unit is disposed upstream and includes upstream transport means having fluid ejecting means for ejecting fluid from the inside of the transport support surface toward the back surface of the glass film ribbon, and downstream of the upstream transport means. a downstream transport means having no fluid injection means for injecting a fluid toward have a fracture portion that performs the fracture on the transport path is disposed on the side and from the inside of the conveying support surface on the back surface of the glass film ribbon In an independent state ,
The glass film ribbon manufacturing apparatus, wherein a contact area with the glass film ribbon on the transport support surface of the upstream transport means is smaller than a contact area with the glass film ribbon on the transport support surface of the downstream transport means. The glass film ribbon transferred from the upstream side of the conveyance path of the glass film ribbon to the horizontal conveyance unit is cleaved along the planned cutting line extending in the longitudinal direction of the glass film ribbon while being conveyed in the horizontal direction by the horizontal conveyance unit. In the glass film ribbon manufacturing apparatus configured in
Annealer is disposed on the upstream side of the horizontal transport unit in the transport path of the glass film ribbon,
The lateral transport unit is disposed upstream and includes upstream transport means having fluid ejecting means for ejecting fluid from the inside of the transport support surface toward the back surface of the glass film ribbon, and downstream of the upstream transport means. a downstream transport means having no fluid injection means for injecting a fluid toward have a fracture portion that performs the fracture on the transport path is disposed on the side and from the inside of the conveying support surface on the back surface of the glass film ribbon In an independent state ,
The apparatus for producing a glass film ribbon, wherein a coefficient of static friction with the glass film ribbon on the conveying support surface of the upstream conveying means is smaller than a coefficient of static friction with the glass film ribbon on the conveying support surface of the downstream conveying means. The transport support surface of the downstream transport means is an upper surface of a stretchable sheet ribbon that is wound around the upper surface portion of the downstream transport means and fed in an open loop following the upper surface portion of the downstream transport means. The glass film ribbon manufacturing apparatus according to claim 1 or 2 , wherein the apparatus is a glass film ribbon manufacturing apparatus. The glass sheet ribbon manufacturing apparatus according to claim 3 , wherein the sheet ribbon is adsorbed and held in an expandable and contractible state on an upper surface portion of the downstream-side conveying unit. The glass sheet ribbon manufacturing apparatus according to claim 3 or 4 , wherein the sheet ribbon is formed of a foamed resin. On the upstream side of the horizontal conveyance unit in the conveyance path of the glass film ribbon, a direction changing unit for changing the direction of the glass film ribbon drawn out from the forming unit in the vertical direction to the horizontal conveyance is disposed. The glass film ribbon manufacturing apparatus according to any one of claims 1 to 5 , wherein: The glass film ribbon and ERROR upstream or et lateral conveyance of the conveying path of the glass film ribbon to fracture along a preset cleaving line extending in the longitudinal direction of the transverse transporting the glass film ribbon while conveying transversely unit In the glass film ribbon manufacturing method,
On the upstream side of the horizontal conveyance unit in the conveyance path of the glass film ribbon, the glass film ribbon is conveyed in the annealer,
In the horizontal transport unit, an upstream transport unit disposed on the upstream side and having a fluid ejecting unit that ejects fluid from the inside of the transport support surface toward the back surface of the glass film ribbon, and downstream of the upstream transport unit injecting a fluid from the inside of the conveyor supporting surfaces as well as have a breaking portion which performs the fracture on the transport path is disposed in a separate state and the upstream side conveyance means on the side to the back surface of the glass film ribbon The glass film ribbon is transported in a lateral direction by a downstream transport unit having no fluid ejecting unit and having a larger contact area with the glass film on the transport support surface than the upstream transport unit. Film ribbon manufacturing method. The glass film ribbon and ERROR upstream or et lateral conveyance of the conveying path of the glass film ribbon to fracture along a preset cleaving line extending in the longitudinal direction of the transverse transporting the glass film ribbon while conveying transversely unit In the glass film ribbon manufacturing method,
On the upstream side of the horizontal conveyance unit in the conveyance path of the glass film ribbon, the glass film ribbon is conveyed in the annealer,
In the horizontal transport unit, an upstream transport unit disposed on the upstream side and having a fluid ejecting unit that ejects fluid from the inside of the transport support surface toward the back surface of the glass film ribbon, and downstream of the upstream transport unit injecting a fluid from the inside of the conveyor supporting surfaces as well as have a breaking portion which performs the fracture on the transport path is disposed in a separate state and the upstream side conveyance means on the side to the back surface of the glass film ribbon The glass film ribbon is transported in a lateral direction by a downstream transport unit having no fluid ejecting unit and having a larger coefficient of static friction with the glass film on the transport support surface than the upstream transport unit. Film ribbon manufacturing method. On the upstream side of the horizontal conveyance unit in the conveyance path of the glass film ribbon, the glass film ribbon drawn out in the vertical direction from the forming unit is changed in the direction to the horizontal conveyance by the direction conversion unit, and thereafter The method for producing a glass film ribbon according to claim 7 or 8 , wherein the glass film ribbon is transferred to the lateral conveyance unit. Claim 7, characterized in that the glass film ribbon by the downstream transport means after being conveyed in a horizontal direction, wound overlapping the glass film ribbon to the protective sheet at the downstream side winding portion disposed glass film ribbon production method according to any one of 1-9.

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