TW201305068A - Wire pulling rolls for use in glass manufacturing processes and glass manufacturing processes incorporating the same - Google Patents

Abstract

In one embodiment, a pulling roll for drawing glass sheet includes a shaft member and a brush assembly. The brush assembly includes a plurality of loops formed from metal wire. Each loop overlaps an adjacent loop and is parallel to and non-concentric with the adjacent loop. The brush assembly is spirally wound on the shaft member such that the plurality of loops project from a surface of the shaft member and a plane of each loop of the plurality of loops is non-parallel with a long axis of the shaft member. The brush assembly forms a cover of the pulling roll for contacting a planar surface such that the planar surface is tangential to at least a portion of the plurality of loops of the brush assembly when the cover contacts the planar surface. Glass manufacturing processes incorporating the pulling rolls are also disclosed.

Description

Wire drawing roller for use in a glass manufacturing process and glass manufacturing process incorporating the wire drawing roller [Reciprocal Reference of Related Applications]

This application is hereby incorporated by reference in its entirety in its entirety in its entirety in its entirety in the the the the the the the the the the the

The present specification generally relates to a pulling roll for the manufacture of glass sheets, and more particularly, the present specification relates generally to use in a glass manufacturing process, including a wire loop brush (wire). Loop brush) The pull roller of the assembly.

The draw rolls are used in the manufacture of sheet glass to impart a glass ribbon or glass web by applying tension, and individual glass sheets are formed from the strip or strip. The amount of tension applied to the glass by the draw rolls is used to control the nominal thickness of the glass as it is drawn from the molten glass, such as in an overflow down drag fusion procedure or a similar glass manufacturing process. Flow down the drag fusion procedure as described in U.S. Patent Nos. 3,338,696 and 3,682,609.

The draw rolls are generally designed to contact the glass strand at the outer edge of the glass ribbon, typically in contact with the just inner side of the thickened bead, which is formed at the extreme edge of the glass strip At the office. Because of pulling The lead roller directly contacts the surface of the glass strip, and damage to the glass surface may occur due to the wear characteristics of the pull roller material. For example, when the pull roller contacts the glass, the glass particles may turn into the surface of the draw roller, causing damage to the glass.

Similarly, if the material of the pull roller deteriorates as it is used at the high temperature of the glass pulling program, the pull roller may peel off the particulate matter. This particulate matter may be converted into a soft glass, thus forming defects in the glass. Similarly, particulate matter (eg, debris, dust, glass shards, and the like) generated by the glass dragging process can be transferred into the surface of the draw rolls, thus creating repeating defects in the glass strand. Damage to the glass strand caused by either of these mechanisms may cause the glass to be scrapped, thereby reducing manufacturing efficiency and increasing cost.

Therefore, there is a need for an alternative design of the draw rolls used in the glass manufacturing process.

The embodiments described herein relate to draw rolls used in glass drag programs that reduce the occurrence of defects in the glass sheets drawn by the draw rolls. Also disclosed is a method of forming a glass sheet using a draw roller that mitigates the occurrence of defects in the glass sheet.

According to one embodiment, a draw roll for reducing the occurrence of defects in a glass sheet includes a shaft member and a brush assembly having a plurality of loops formed of wire. Each loop of the plurality of loops can overlap Adjacent loops are parallel and unambiguous to the adjacent loops. The brush assembly is spirally wound on the shaft member such that the plurality of loops protrude from the surface of the shaft member, and a plane of each loop of the plurality of loops and a long axis of the shaft member are not parallel. The brush assembly forms a cover of the draw roller to contact a planar surface such that when the cover contacts the planar surface, the planar surface is tangential to the plurality of brush assemblies At least part of the loop.

In another embodiment, a draw roll for reducing the occurrence of defects in a glass sheet includes a shaft member and a brush assembly. The brush assembly can include a single wire of wire formed as a plurality of loops, wherein each loop of the plurality of loops overlaps adjacent loops and is parallel and uncentered with adjacent loops. The brush assembly can further include a holding member having a channel. The plurality of loops can be secured in the passage of the holding member. The brush assembly is spirally wound on the shaft member such that the plurality of loops protrude from the surface of the shaft member, and the plane of each loop of the plurality of loops is non-parallel to the long axis of the shaft member . The brush assembly forms a cover for the draw roller to contact a planar surface such that when the cover contacts the planar surface, the planar surface is tangential to at least a portion of the plurality of loops of the brush assembly.

In still another embodiment, a method for forming a glass sheet with reduced defects can include melting a glass batch material to form a molten glass and forming the molten glass into a glass sheet. At least a first surface of the glass sheet may contact at least one draw roll to transport the glass sheet in a downstream direction. The at least one pull roller may comprise a shaft A member and a brush assembly, the brush assembly can include a plurality of loops formed of wire. Each loop of the plurality of loops may overlap adjacent loops and be oriented parallel and unambiguous to adjacent loops. The brush assembly is spirally wound on the shaft member such that the plurality of loops protrude from the surface of the shaft member, and a plane of each loop of the plurality of loops and a long axis of the shaft member are not parallel. When the pull roller contacts the first surface of the glass sheet, at least a portion of the plurality of loops of the pull roller can be tangent to the first surface of the glass sheet.

The additional features and advantages of the present invention are set forth in the Detailed Description of the Detailed Description of <RTIgt; The embodiments, including the following detailed description, the claims, and the drawings, are to be understood as

It is to be understood that the foregoing general descriptions The drawings are included to provide a further understanding of the various embodiments, and are incorporated in the specification and constitute a part of this specification. The drawings illustrate the various embodiments described herein, and together with the description of the description

Now, please read the implementation of the pull roller used in the manufacture of glass sheets. Examples and various embodiments of the glass manufacturing process incorporating the draw rolls. Whenever possible, the same reference numbers will be used throughout the drawings. One embodiment of a draw roller is schematically illustrated in FIG. The pull roller generally includes a shaft member and a brush assembly having a plurality of loops formed of wire. The brush assembly is helically wound on the shaft member such that a plurality of loops project from the surface of the shaft member and the plane of each loop of the plurality of loops is non-parallel to the long axis of the shaft member. The brush assembly forms a cover for the draw roller for contacting a planar surface such that when the cover contacts the planar surface, the planar surface is tangential to at least a portion of the plurality of loops of the brush assembly. Please refer to the attached drawings, which will be described in more detail herein and a method of using the pulling roller to draw a glass sheet.

The glass sheet material can be formed generally by melting a glass batch material to form a molten glass, and then forming the molten glass into a glass sheet. Exemplary procedures include a floating glass program, a slot traversing program, and a fused down traversing program. In each of these procedures, one or more draw rolls can be used to contact the glass sheet and transport the glass sheet in a downstream direction.

Referring to FIG. 1A (for example), an exemplary glass manufacturing apparatus 100 for forming a glass sheet material from molten glass is schematically illustrated in which a molten glass is formed into a glass sheet using a fusion sling machine. The glass manufacturing apparatus 100 includes a melting vessel 101, a clarification vessel 103, a mixing vessel 104, a conveying vessel 108, and a fusion draw machine (FDM) 120. Introduce glass batch material as indicated by arrow 102 Melted in the vessel 101. The batch material is melted to form molten glass 106. The clarification vessel 103 has a high temperature treatment zone that receives the molten glass 106 from the melting vessel 101 and removes bubbles from the molten glass 106 in this zone. The clarification vessel 103 is fluidly coupled to the mixing vessel 104 through a connecting tube 105. That is, the molten glass flowing from the clarification vessel 103 to the mixing vessel 104 flows through the connection pipe 105. The mixing vessel 104 is then fluidly coupled to the transfer vessel 108 through a connecting tube 107 such that molten glass flowing from the mixing vessel 104 to the transfer vessel 108 flows through the connecting tube 107.

The transfer container 108 supplies the molten glass 106 into the FDM 120 through the downcomer 109. The FDM 120 includes a cladding 122 in which an inlet 110, a container 111, and at least one traction assembly 150 are positioned. As shown in Fig. 1, the molten glass 106 from the downcomer 109 flows into the port 110, which is connected to the forming vessel 111. The forming container 111 includes an opening 112 that receives the molten glass 106, which flows into the trough 113, then overflows and runs down the converging sides 114a and 114b, then fuses together at the root, at Here the sides are joined, after which the molten glass is contacted by the traction assembly 150 and the molten glass is drawn in the downstream direction 151 to form a continuous glass sheet 148.

Referring to Figure 1B, a cross section of the traction assembly 150 is schematically depicted. As shown in FIG. 1B, the traction assembly 150 generally includes a pair of opposed pull rollers 200a, 200b that contact the glass sheet 148 on opposite sides. Therefore, it should be understood that the glass sheet 148 is intimately contacted between the draw rolls 200a, 200b. The pull rollers 200a, 200b may be powered or passive, and the power type is The pulling rollers 200a, 200b are actively rotated, thereby imparting a traction force that transports the glass sheet 148 in the downstream direction 151, while the passive type is below the other pulling rollers except the glass sheets being pulled by the rollers 200a, 200b. When the swim direction 151 is pulled, the pull rollers 200a, 200b contact the glass sheet 148 and stabilize the glass sheet.

Although it has been described herein that the draw rolls 200a, 200b are used in conjunction with a device for forming a glass sheet using a fusion staking machine, it should be understood that the pull rolls can be used in conjunction with a similar procedure, such a procedure: In this procedure, the glass batch material is melted to form molten glass and the molten glass is then formed into a glass sheet and drawn by a draw roller. By way of example and not limitation, the pull roller described herein can also be used in conjunction with an upward traction program, a slot traction program, a floating traction program, and other similar glass traction programs.

As briefly described above, the draw rolls used in the foregoing procedure directly contact the glass sheets, and in this regard, damage to the glass surface may occur due to the wear characteristics of the pull roll material. For example, when the pull roller contacts the glass, the glass particles may turn into the surface of the draw roller, causing damage to the glass. Also, the pull roller may deteriorate and detach the particulate matter as it is used for a long time at a high temperature. This particulate material may be converted to be embedded in soft glass, thus forming defects in the glass. The drawing roller described above contacts the glass piece by the wire loop, and thus has a large stability at a high temperature, and is not easily deteriorated or detached from the particulate matter after a long period of use. Furthermore, the open loop structure of the pull roller allows the particulate matter to be easily absorbed into the pull roller body instead of Embed on the surface of the pull roller.

Referring now to Figures 2 and 3, an exemplary draw roller 200 for use in a glass manufacturing process is schematically depicted. The pull roller 200 generally includes a shaft member 204 around which the brush assembly 250 is wrapped. The brush assembly is generally formed from a plurality of wire loops that form a compliant cover around the shaft member. In the embodiment described herein, the shaft member 204 of the draw roller 200 is generally cylindrical in shape and may be formed of a metallic material suitable for use at elevated temperatures without loss of mechanical strength, i.e., greater than about 700 ° C or Even 800 ° C temperature. Suitable materials include, for example, stainless steel, nickel-based alloys, and other similar materials commonly used in high temperature applications.

In the exemplary embodiment of the draw roller 200 depicted in FIG. 2, the shaft member 204 includes threads 205 on one end and a shoulder 203 formed on the opposite end that assists in brush assembly 250 It is held on the shaft member 204. The shoulder 203 can also assist in securing the pull roller 200 to the frame or mechanism to actively rotate the draw roller 200.

Referring now to Figures 2, 3 and 5B, the draw roller 200 further includes a brush assembly 250 that is helically wrapped around the shaft member 204 to form a resilient cover that is compliant. Pieces. Brush assembly 250 generally includes a plurality of wire loops 218. In Figure 5B, the plurality of loops 218 of the brush assembly 250 are shown in an "unwound" state. As shown in FIG. 5B, each loop 220 of the plurality of wire loops 218 overlaps adjacent loops but does not overlap adjacent loops. concentric. Moreover, the plane of each individual loop 220 (i.e., the plane in which the loop 220 lies) is generally parallel to the plane of the adjacent loop. However, directly adjacent turns are generally not coplanar with each other. In some embodiments, none of the plurality of loops 218 are coplanar.

Still referring to FIG. 5B, in the embodiment described herein, a plurality of loops are formed such that each loop has a loop diameter D ranging from about 2.5 cm to about 5.08 cm. In some embodiments, all of the loops 220 of the plurality of loops 218 have the same diameter. However, it should be considered that the brush assembly can be constructed from a plurality of loops having different diameters.

As noted above, adjacent loops of brush assembly 250 overlap each other. The overlap between the loops provides a draw roller having a uniform contact surface as the pull roller rotates, which in turn causes the draw roller to apply a drag force on the planar surface of the glass sheet. In general, the center-to-center spacing S between adjacent loops is at least 0.25 cm. For example, in the embodiments described herein (in this embodiment, the plurality of loops have a loop diameter D ranging from about 2.5 cm to about 5.08 cm), the center-to-center spacing S between adjacent loops is greater than Or equal to 0.25 cm and less than or equal to about 1.3 cm.

The plurality of loops 220 of the brush assembly 250 are formed from wire wires that are suitable for use at elevated temperatures without experiencing significant contamination and/or oxidation of the mechanical properties that can contaminate the glass pulling procedure and degrade the draw rolls. . For example, suitable materials formed by the plurality of loops 220 include 304 stainless steel, 310 stainless steel, 434 stainless steel, Inconel 625 nickel based alloy, Haynes 230 alloy, 800 HT alloy, HR-120 alloy, PM 2000 alloy, Nicrofer. 602CA alloy, MA956 alloy, Kanthal, Fecralloy steel JA13, Stellite series steel, and nickel-aluminum alloy doped with rare earth, but not limited to this. However, it should be understood that other metallic materials may be used.

Alternatively (or additionally) the wire may be coated with one or more coatings or surface treatments which mitigate the oxidation of the wire (ie, the oxidation resistant coating) and prevent the pull after the drawn roll is exposed to high temperatures The roller is deteriorated. Suitable coatings include, but are not limited to, alumina, zirconia, and/or similar coatings that prevent metal materials from oxidizing at elevated temperatures.

A plurality of wire loops can be formed using wire wires of various diameters. In some embodiments, the wire has a diameter greater than or equal to about 0.25 mm. For example, the wire may have a diameter greater than or equal to about 0.25 mm and less than or equal to about 1.5 mm. It should be considered that the wire having a diameter within this range can be used to form a fully compliant draw roller to achieve contact with the glass without damaging the glass surface. In a particular embodiment, the wire has a diameter of about 0.5 mm.

Referring to Figures 5A through 5D, in one embodiment, the plurality of loops may be formed from a single wire. For example, a plurality of loops 218 can be formed by wrapping a single wire wire 301 around the forming mandrel 300 to create a spring-like coil structure. Thereafter, the forming mandrel 300 is removed from the spring-like coil structure, and the individual loops are skewed in a direction perpendicular to the long axis of the coil such that each loop 220 overlaps the adjacent loop, and the phase The adjacent circle is different, as shown in Figure 5B. In one embodiment, the support wire 303 can be inserted through a plurality of loops 218 to provide structural support for the loop and maintained back during assembly of the draw rolls The relative direction of the circle.

Thereafter, a plurality of loops 218 are positioned in the holding member 230 to form the brush assembly 250, as shown in Figures 5C and 5D. In particular, the holding member 230 is formed of a plastically deformable metallic material and includes a central passage 234 in which a plurality of loops 218 are positioned, as shown in Figures 5C and 5D. The sidewall of the retaining member 230 is then crimped over the plurality of loops 218 such that a plurality of loops 218 are secured in the retaining member, and the retaining member maintains a plurality of loops 218 relative to each other Relative positioning and direction.

While Figures 5C and 5D depict the brush assembly 250 as including a holding member, it should be understood that in other embodiments, the brush assembly 250 can be formed without the need to hold the member.

Referring now to Figure 6, in another embodiment, the brush assembly 250 can be formed from individual wire wires. For example, each loop 220 can be formed from a discrete circle or semi-circular wire. Thereafter, each individual loop can be positioned in a holding member (such as the aforementioned holding member 230) such that the loops 220 have the desired overlap and relative orientation. The holding members 230 can then be flexed to secure the loops in the holding members to form the brush assembly 250.

Referring again to FIG. 2, once the brush assembly 250 is formed using any of the foregoing techniques, the brush assembly 250 is wrapped around the shaft member 204 such that the brush assembly 250 is conformed around the shaft member 204. Cover. In one embodiment of the description, the brush assembly 250 is helically wrapped around the shaft member 204 to surround the shaft member 204. A cover is formed. The cover extends along the axial length of the shaft member 204, as depicted in FIG. More specifically, the brush assembly 250 is wrapped around the shaft member 204 such that each loop 220 of the plurality of loops projects from the surface of the shaft member 204 and the plane of each loop is longer than the length of the shaft member 204. The shaft 251 is non-parallel, as depicted in Figure 2. In some embodiments, the plane of each loop may be substantially perpendicular to the long axis 251 of the shaft member 204. Where each loop 220 of the brush assembly 250 is oriented (i.e., non-parallel to the long axis 251 of the shaft member), each loop 220 is on an axis that is not coaxial with the long axis 251 of the shaft member 204. Centered. For example, as shown in FIG. 2, at least one loop of the brush assembly 250 is centered on a shaft 253 that is not coaxial with the long axis 251 of the shaft member 204.

Referring to FIG. 4A, in some embodiments, the thermal insulation layer 231 can be positioned between the brush assembly 250 and the shaft member 204 prior to helically winding the brush assembly 250 onto the shaft member 204. The thermal insulation layer 231 may be formed of a rigid insulating material such as a rigid ceramic insulator. Suitable materials include, but are not limited to, KVS 174/1000 vacuum formed alumina fiber insulation or the like manufactured by Rath-USA. The use of a thermal insulation layer 231 minimizes heat loss from the surface of the glass sheet through the draw rolls 200, and thus reduces temperature gradients that may develop in the glass sheets, which may damage the glass sheets.

Referring again to FIG. 2, a pair of retaining members 206a, 206b can be used to assist in retaining the brush assembly 250 on the shaft member 204. In detail, the first retention element is prior to wrapping the brush assembly 250 on the shaft member 204. The piece 206a is positioned against the shaft member 204 against the shoulder 203. Thereafter, the brush assembly 250 is helically wrapped around the shaft member 204 to form a cover around the shaft member 204. The second retaining element 206b is then positioned on the shaft member 204 and fastened with the washer 207 and the nut 232 to the second retaining element 206b, thus between the first retaining element 206a and the second retaining element 206b on the shaft member 204 The upper axial compression brush assembly 250. The nut 232 can be tightened until the desired amount of compression of the brush assembly 250 is reached. The axial compression of the brush assembly 250 by tightening the nut 232 onto the shaft member 204 increases the stiffness of the draw rolls, while the release nut 232 reduces axial compression and softens the draw rolls. Accordingly, it should be understood that the amount of axial compression applied to the brush assembly 250 can be adjusted by loosening or tightening the nut 232.

The term "axial compression" as used herein generally refers to the force applied to the brush assembly in the axial direction to compress the adjacent loops of the brush assembly against each other. The greater the amount of axial compression, the more difficult the draw rolls will be due to the difficulty of elastically flexing individual loops. Conversely, the smaller the amount of axial compression, the softer the draw rolls can be created by the easier flexing of individual loops (especially in the axial direction). For softer draw rolls, particulate matter (eg, glass slag) tends to penetrate between the individual loops of the brush assembly, effectively transitioning to envelop between individual loops and being towed To the void space of the loop of the pull roller, and drawn from the contact surface of the pull roller. However, such particulate matter can be easily removed from the interior space by gently scrubbing the loops.

Referring now to FIG. 4B, in another embodiment, the brush assembly 250 can be spirally wrapped around the hollow metal sleeve 237 and attached to the metal sleeve by mechanical fasteners and/or by welding. Thereafter, the shaft member 204 can be inserted into a metal sleeve 237 having an attached brush assembly 250, and the metal sleeve 237 can be welded or otherwise attached to the shaft member 204.

When the brush assembly 250 is positioned on the shaft member 204, each loop 220 of the plurality of loops 218 projects from the surface of the shaft member 204 and the plane of each loop is non-parallel to the long axis 251 of the shaft member 204 (eg, As previously described), and when the cover of the draw roller 200 (i.e., the brush assembly 250) is brought into contact with the planar surface, at least a portion of the plurality of loops are tangential to the planar surface. Referring to FIG. 1B (which is exemplary), the draw rolls 200a, 200b are depicted for pulling the glass sheet 148 in the downstream direction 151. As the pull rollers rotate, each loop 220 rotates, thereby contacting the surface plane 149 of the glass sheet 148. When each loop 220 contacts the surface plane 149 of the glass sheet 148, the surface plane 149 of the glass sheet 148 tangentially tangs the individual loops 220.

The drawing roller described above can also be used to draw the glass sheet in the drawing direction while applying tension to the glass sheet in the direction transverse to the drawing direction to flatten the glass sheet. Referring to FIG. 7 (which is exemplary), at least one pull roller pulls the glass sheet 148 in the downstream direction 151. In the embodiment illustrated in Figure 7, the two pull rollers 200a, 200c contact the first surface of the glass sheet in the vicinity of opposite lateral edges of the glass sheet. For example, the first pull roller 200a contacts the glass sheet 148 near the first lateral edge. The first surface while the second pull roller 200c contacts the glass sheet 148 near the second lateral edge. The brush assembly 250a of the first pull roller 200a is helically wound in a first direction while the brush assembly 250c of the second pull roller 200c is helically wound in a second direction, the second direction being opposite the first direction. The first pulling roller 200a and the second pulling roller 200c may have complementary pulling rollers that are opposite to the first pulling roller 200a and the second pulling roller 200c and contact the second of the glass sheet 148. The surface, see for example Figure 1B, wherein the complementary pull roller 200b is opposite the first pull roller 200a. In the illustrated embodiment, the complementary draw rolls can be constructed with a spiral wound brush assembly (as described herein) or alternatively constructed with conventional roll assemblies (i.e., ceramic and/or composite roll assemblies). In embodiments where the complementary draw rolls have a spiral wound wire brush assembly, the spirally wound brush assembly can be helically wound in a direction that is opposite the corresponding draw rolls of the assembly. Referring to Figure 1B (which is exemplary), the brush assembly of the complementary draw roller 200b can be wrapped in a direction opposite the brush assembly of the first pull roller 200a.

Referring again to Figure 7, when the pull rollers 200a and 200c contact the glass sheet 148 and the glass sheet is drawn in the downstream direction 151, the spirally wound brush assemblies of the respective pull rollers 200a, 200c operate together with each other to The cutting downstream direction 151 applies tension to the glass sheet 148. In detail, the spirally wound brush assembly 250a of the first pull roller 200a exerts a force on the glass sheet 148 as indicated by arrow 171 due to the winding direction of the brush assembly. Similarly, the spirally wound brush assembly 250c of the second pull roller 200c applies force to the glass in the direction indicated by arrow 172. On the piece 148, this force is equal to the force applied by the first pulling roller 200a and is opposite to the force applied by the first pulling roller 200a. Although the net force acting on the glass sheet 148 in the cross-cut downstream direction 151 is zero, the first pull roller 200a and the second pull roller 200c cause the glass sheet 148 to be stretched in the direction transverse to the downstream direction 151. The state thus flattens the glass sheet 148 and removes any bow that may develop in the glass sheet.

Although FIG. 7 depicts the first pull roller 200a and the second pull roller 200c as being individually positioned on the stub shaft members 204a, 204c, it should be appreciated that other configurations are contemplated. For example, Figure 8 depicts an embodiment in which the first pull roller 200a and the second pull roller 200c are positioned on a single shaft member 204 and spaced apart in the axial direction such that the first pull roller 200a and the first The two pull rollers 200c contact the first surface of the glass sheet 148 at opposite lateral edges adjacent the glass sheet. The brush assembly 250a of the first pull roller 200a and the brush assembly 250c of the second pull roller 200c are wound in opposite directions (as described above) such that the first pull roller 200a applies a lateral direction in the direction indicated by the arrow 171 The force is applied to the glass sheet 148, and the second pull roller 200c applies an equal and opposite lateral force to the glass sheet 148 as indicated by arrow 172. When the glass sheet is drawn in the downstream direction 151, these forces cause the glass sheet 148 to be stretched, thereby flattening the glass sheet.

Thus, exemplary and non-limiting embodiments include:

C1. A draw roller for drawing a glass sheet in a downward drag program, the pull roller comprising: a shaft member; and a brush assembly including a plurality of loops formed of metal wires, wherein : The plural Each loop of the loop overlaps the adjacent loop and is parallel and unambiguous to the adjacent loop; and the brush assembly is helically wound on the shaft member such that a plurality of loops are from the shaft member The surface of the plurality of loops is non-parallel to the major axis of the shaft member, the brush assembly forming a cover of the pull roller to contact the planar surface such that the cover When the piece contacts the surface of the plane, the surface of the plane is tangent to at least a portion of the plurality of loops of the brush assembly.

C2. The pull roller of C1, wherein the metal wire is a single metal wire.

C3. The pull roller of C1, wherein each loop of the plurality of loops is formed by individual metal wires.

C4. The draw roller of any one of C1 to C3, wherein the brush assembly further comprises: a holding member having a passage, wherein the plurality of loops are fastened in the passage of the holding member .

C5. A draw roller for pulling a glass sheet in a downward drag program, the pull roller comprising: a shaft member; and a brush assembly comprising a single metal wire, the single metal wire being formed as a plurality of loops, wherein each loop of the plurality of loops overlaps adjacent loops, and is parallel and uncentered with the adjacent loops; the holding member has a passage, wherein the plurality of loops are fastened In the passage of the holding member; and the brush assembly is helically wound on the shaft member such that the plurality of loops protrude from the surface of the shaft member, and each loop of the plurality of loops The plane is non-parallel to the long axis of the shaft member, the brush assembly forming a cover for the draw roller to contact a planar surface such that the cover Upon contact with the surface of the plane, the surface of the plane is tangential to at least a portion of the plurality of loops of the brush assembly.

C6. The drawing roller of any one of C1 to C5, wherein the plane of each loop of the plurality of loops is perpendicular to the shaft member when the brush assembly is spirally wound around the shaft member Long axis.

C7. The draw roller of any one of C1 to C6, further comprising a thermal insulation layer positioned between the shaft member and the brush assembly.

C8. The pull roller of any one of C1 to C7, further comprising a metal sleeve positioned between the shaft member and the brush assembly.

C9. The draw roller of any one of C1 to C8, wherein the brush assembly is axially compressed on the shaft member.

C10. The pull roller of C9, wherein the brush assembly is axially compressed between a pair of retaining members.

C11. The pull roller of C9, wherein the axial compression of the brush assembly on the shaft member is adjustable.

C12. The draw roller of any one of C1 to C11, wherein the wire has a diameter greater than or equal to 0.25 mm and less than or equal to 1.5 mm.

C13. The draw roller of any one of C1 to C12, wherein the metal wire comprises an oxidation resistant coating.

C14. The draw roller of any one of C1 to C13, wherein the brush assembly further comprises a support wire extending through the plurality of loops.

C15. A pulling roller of any one of C1 to C14, wherein the plurality of rollers Each loop of the loop has the same loop diameter.

C16. The draw roller of any one of C1 to C15, wherein each of the plurality of loops has a loop diameter having a diameter greater than or equal to about 2.5 cm and less than or equal to about 5.08 cm.

C17. The draw roller of any one of C1 to C16, wherein a center-to-center spacing between adjacent loops is greater than or equal to about 0.25 cm and less than or equal to about 1.3 cm.

C18. A method for forming a glass sheet, the method comprising the steps of: melting a glass batch material to form a molten glass; forming the molten glass into a glass sheet; contacting at least one of the glass sheets with at least one drawing roller a surface, conveying the glass sheet in a downstream direction, wherein the at least one pulling roller comprises: a shaft member; and a brush assembly comprising a plurality of loops formed of metal wires, wherein: the plurality of loops Each loop overlaps adjacent loops and is parallel and unconcentric with the adjacent loops, and the brush assembly is helically wound on the shaft member such that the plurality of loops protrude from the surface of the shaft member And the plane of each loop of the plurality of loops is non-parallel to the long axis of the shaft member, wherein when the at least one pull roller contacts the first surface of the glass sheet, the at least one pull roller At least a portion of the plurality of loops are tangent to the first surface of the glass sheet.

The method of C18, wherein the at least one pulling roller comprises a first pulling roller and a second pulling roller, wherein the first pulling roller and the second pulling lead when the glass sheet is pulled in a downstream direction The roller applies tension across the downstream direction of the glass sheet.

C20. The method of C18, wherein: the at least one pulling roller comprises a first pulling roller and a second pulling roller, wherein the brush assembly of the first pulling roller is spirally wound in a first direction, and the second The brush assembly of the pull roller is helically wound in a second direction opposite the second direction; the first pull roller contacts the glass sheet at a first lateral edge adjacent the glass sheet a surface; and the second pull roller contacts the first surface of the glass sheet at a second lateral edge adjacent the glass sheet such that when the glass sheet is pulled in a downstream direction, the first pull roller The second pull roller applies tension to the glass sheet transverse to the downstream direction.

C21. The method of C18, wherein the brush assembly is a first brush assembly, and the pull roller further comprises a second brush assembly, the second brush assembly being helically wound on the shaft member and with the first brush assembly They are spaced apart in the axial direction.

C22. The method of C21, wherein the first brush assembly is wound on the shaft member in a first direction, and the second brush assembly is wound on the shaft member in a second direction, the first direction and the second The directions are opposite such that when the glass sheet is pulled in the downstream direction, the first brush assembly and the second brush assembly apply tension to the glass sheet transverse to the downstream direction.

C23. The method of C18, wherein the metal wire is a single metal wire.

C24. The method of C18, wherein each loop of the plurality of loops is formed by individual wire wires.

The method of any one of C18 to C24, wherein the brush assembly further comprises a holding member having a passage, wherein the plurality of The loop is fastened in the passage of the holding member.

The method of any one of C18 to C25, wherein a plane of each of the plurality of loops is perpendicular to the long axis of the shaft member when the brush assembly is helically wound around the shaft member.

The method of any one of C18 to C26, further comprising a thermal insulation layer positioned between the shaft member and the brush assembly.

The method of any one of C18 to C27, wherein the brush assembly is axially compressed on the shaft member.

It should now be understood that the pull rolls described herein can be used in glass manufacturing processes to hoist and/or guide glass sheets. In particular, the overlapping loops of the brush assembly present a smooth and resilient surface that can be in contact with the glass sheet without damaging the surface of the glass sheet. Furthermore, since the pulling roller is constructed of a metal component suitable for use at a high temperature, the drawing roller is not easily deteriorated or detached from particulate matter and/or debris at a high temperature for a long time, and the particulate matter and/or residue may be contaminated. Glass traction program. Further, the individual wire loops are sufficiently flexible to enclose and absorb the particulate matter into the void space of each loop, thereby reducing damage to the glass sheet.

Furthermore, it should also be understood that a plurality of pulling rolls can be used to draw the glass sheet in the downstream direction while the glass sheet is in a stretched state in a direction transverse to the downstream direction. This can be accomplished by using a draw roller having a reverse wound brush assembly positioned at opposite lateral edges of the adjacent glass sheets. When the glass sheet is drawn, the tension applied to the glass sheet in this direction can be used to flatten the glass sheet, thus providing additional The size control gives the glass traction process.

It will be apparent to those skilled in the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; Therefore, the Applicants intend for the present invention to cover such modifications and variations of the various embodiments described herein, if such modifications and variations are included in the scope of the appended claims.

100‧‧‧Glass manufacturing equipment

101‧‧‧fusion vessel

102‧‧‧Arrow

103‧‧‧Clarification container

104‧‧‧Mixed container

105‧‧‧Connecting tube

106‧‧‧Solid glass

107‧‧‧Connecting tube

108‧‧‧Transport container

109‧‧‧ downcomer

110‧‧‧ entrance

111‧‧‧ Forming a container

112‧‧‧ openings

113‧‧‧ Groove

114a, 114b‧‧‧ Convergence side

120‧‧‧fusion traction machine

122‧‧‧Encasement

148‧‧‧Stainless glass

149‧‧‧ surface plane

150‧‧‧ traction components

151‧‧‧ downstream direction

171, 172‧‧‧ arrows

200, 200a, 200b, 200c‧‧‧ pull rollers

203‧‧‧ shoulder

204, 204a, 204c‧‧‧ shaft members

205‧‧‧ thread

206a, 206b‧‧‧ Keeping components

207‧‧‧Washers

218‧‧‧Thread loop

220‧‧‧ Loop

230‧‧‧ Holding components

231‧‧‧ Thermal insulation

232‧‧‧ nuts

234‧‧‧Central Channel

237‧‧‧ hollow metal sleeve

250, 250a, 250c‧‧‧ brush components

251‧‧‧ long axis

253‧‧‧Axis

300‧‧‧ mandrel

301‧‧‧metal wire

303‧‧‧Support wire

D‧‧‧diameter

S‧‧‧ spacing

FIG. 1A schematically depicts a glass traction apparatus according to one or more embodiments shown and described herein for forming a glass sheet; FIG. 1B schematically depicts a glass sheet for drawing A section of the traction assembly; FIG. 2 schematically depicts a section of a draw roll formed by a wire loop in accordance with one or more embodiments shown and described herein; FIG. 3 is schematically depicted in accordance with A cross-section of a draw roller of Figure 2 of one or more embodiments shown and described; Figure 4A schematically depicts a pull roller of Figure 2 according to another embodiment shown and described herein Section 4B schematically depicts a cross section of a draw roller according to Fig. 2 of another embodiment shown and described herein; Fig. 5A schematically depicts the formation of a plurality of wire loops of the brush assembly, The brush assembly is in accordance with one or more embodiments shown and described herein Figure 2 is a brush assembly of a pull roller; Figure 5B schematically depicts a plurality of wire loops for forming a brush assembly, the brush assembly being in accordance with one or more embodiments shown and described herein The brush assembly of the pull roller of FIG. 2; FIG. 5C schematically depicts the wire brush assembly of the draw roller of FIG. 2 before being attached to the shaft member of the draw roller; FIG. 5D is schematically depicted according to FIG. A cross-section of the brush assembly of Figure 5C of one or more embodiments shown and described herein; Figure 6 is a schematic depiction of a brush assembly for a pull roller having a plurality of wire segments formed therefrom a discrete loop; Figure 7 schematically depicts the use of a pair of pull rollers to draw glass sheets, which are constructed in accordance with one embodiment described herein; and Figure 8 schematically depicts the use of pull tabs The roller pulls the glass sheet, which is constructed in accordance with another embodiment described herein.

148‧‧‧Stainless glass

149‧‧‧ surface plane

150‧‧‧ traction components

151‧‧‧ downstream direction

200a, 200b‧‧‧ pull roller

220‧‧‧ Loop

Claims (20)

A pull roller for pulling a glass sheet in a downward dragging process, the pull roller comprising: a shaft member; a brush assembly comprising a plurality of loops formed of metal wires, wherein: Each loop of the plurality of loops overlaps an adjacent loop and is parallel and unambiguous with the adjacent loop; and the brush assembly is helically wound on the shaft member such that the plurality of loops Projecting from a surface of the shaft member, and a plane of each loop of the plurality of loops is non-parallel to a long axis of the shaft member, the brush assembly forming a cover of the pull roller (cover And contacting the surface of the plane such that when the cover contacts the surface of the plane, the surface of the plane is tangent to at least a portion of the plurality of loops of the brush assembly. The pull roller of claim 1, wherein the wire is a single wire. The pull roller of claim 1, wherein each loop of the plurality of loops is formed from individual wire wires. The pull roller of claim 1, wherein the brush assembly further comprises A holding member having a passage, wherein the plurality of loops are fastened in the passage of the holding member. A pull roller for pulling a glass sheet in a downward drag program, the pull roller comprising: a shaft member; a brush assembly comprising: a single metal wire, the single metal wire being formed as a plurality of loops, wherein each loop of the plurality of loops overlaps an adjacent loop, and is parallel and different from the adjacent loop; a holding member has a channel, wherein the plurality of loops have a channel a loop is fastened in the passage of the holding member; and the brush assembly is helically wound on the shaft member such that the plurality of loops protrude from a surface of the shaft member, and the plurality of loops a plane of each loop is non-parallel to a long axis of the shaft member, the brush assembly forming a cover of the draw roller to contact a planar surface such that when the cover contacts the planar surface The surface of the plane is tangential to at least a portion of the plurality of loops of the brush assembly. The pulling roller of claim 1 or 5, wherein the plane of each loop of the plurality of loops is perpendicular to the shaft member when the brush assembly is helically wound around the shaft member Long axis. The pull roller of claim 1 or 5, further comprising a thermal insulation layer positioned between the shaft member and the brush assembly. The pull roller of claim 1 or 5, further comprising a metal sleeve positioned between the shaft member and the brush assembly. A draw roller as claimed in claim 1 or 5, wherein the brush assembly is axially compressed on the shaft member. The pull roller of claim 9, wherein the brush assembly is axially compressed between a pair of retaining members. A draw roller as claimed in claim 9 wherein an axial compression of the brush assembly on the shaft member is adjustable. The draw roller of claim 1 or 5, wherein the wire has a diameter greater than or equal to 0.25 mm and less than or equal to 1.5 mm. The draw roller of claim 1 or 5, wherein the wire comprises an oxidation resistant coating. The pull roller of claim 1 or 5, wherein the brush assembly further comprises a support wire extending through the plurality of loops. The pull roller of claim 1 or 5, wherein each of the plurality of loops has the same loop diameter. The pull roller of claim 1 or 5, wherein each of the plurality of loops has a loop diameter having a diameter greater than or equal to about 2.5 cm and less than or equal to about 5.08 cm. A pull roller as claimed in claim 1 or 5, wherein a center-to-center spacing between adjacent loops is greater than or equal to about 0.25 cm and less than or equal to about 1.3 cm. A method for forming a glass sheet, the method comprising the steps of: melting a glass batch material to form a molten glass; forming the molten glass into the glass sheet; contacting at least one of the glass sheets with at least one drawing roller a first surface, conveying the glass sheet in a downstream direction, wherein the at least one pulling roller comprises: a shaft member; and a brush assembly comprising a plurality of loops formed of metal wires, wherein: the plurality of Each loop of the loop overlaps an adjacent loop and is parallel and unambiguous to the adjacent loop; and the brush assembly is helically wound around the shaft member such that The plurality of loops protrude from a surface of the shaft member, and a plane of each loop of the plurality of loops is non-parallel to a long axis of the shaft member, wherein the at least one pull roller When contacting the first surface of the glass sheet, at least a portion of the plurality of loops of the at least one pull roller are tangent to the first surface of the glass sheet. The method of the method of claim 18, wherein the at least one pulling roller comprises a first pulling roller and a second pulling roller, wherein the first glass is drawn in the downstream direction The pulling roller and the second pulling roller apply a force on the glass sheet transverse to the downstream direction. The method of the method of claim 18, wherein the at least one pulling roller comprises a first pulling roller and a second pulling roller, wherein the brush assembly of the first pulling roller has a first direction Spiral winding, and the brush assembly of the second pulling roller is spirally wound in a second direction opposite to the second direction; the first pulling roller is adjacent to the first piece of the glass sheet Contacting the first surface of the glass sheet at a lateral edge; and the second pulling roller contacts the first surface of the glass sheet at a second lateral edge adjacent the glass sheet such that when the downstream direction When the glass sheet is pulled, the first pulling roller and the second pulling roller apply a force to the glass sheet transverse to the downstream direction.