JP2005035873A - Apparatus and method for conveying curved glass sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate changing the conveyance route of curved glass sheets between the outlet of a quenching unit of the curved glass sheet and a subsequent step in case of alternately producing the glass sheet having a simple curvature and the glass sheet having a compound curvature using the same bending production line. <P>SOLUTION: This conveying apparatus comprises a disk roll conveyer and a bendable plane roll conveyer and the bendable plane roll conveyer comprises plane roll conveyer unit comprising a plurality of plane rolls. In each roll conveyer, the angle control in the conveying direction and a direction crossing the transportation direction at a right angle can be carried out and by decreasing the difference of an inclination angle between the conveyers of one another, the multiple curved glass is prevented from being caught or the like and retarded even in the middle of the undulating and bending conveying line. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is an apparatus for conveying a bent glass plate between a distance but a relatively short distance, and has a single curved surface like a window glass for an automobile using the same conveying apparatus. A transport device that can handle both cases of transporting a glass plate in a substantially horizontal direction and transporting a glass plate having a complex curved surface while moving it up and down diagonally between delivery with a height difference, and the device It is invention about the method of conveying a bent glass plate using. In addition, the glass plate (single bending glass plate) having a single curved surface in the present specification is a glass plate having a two-dimensional curved surface formed with a curved surface around the XY axis, and has a composite curved surface. A glass plate (composite bent glass plate) is a glass plate having a three-dimensional shape in which curved surfaces are formed around XY axes orthogonal to each other.

  The curved glass plate used for window glass for automobiles is a gravity bending method that heats and softens the plate glass placed on the mold and hangs it down by gravity, and presses the plate glass heated using the mold. It is bent by the press bending method for bending, the gas hearth bending method for bending the plate glass while it is floated and moved by the high-temperature gas ejected from the hearth bed, the roll hearth bending method for bending the plate glass according to the shape of the transport roll while carrying the roll. They are properly used depending on the size and shape of the curved glass plate.

  In the production of bent glass sheets by the gas hearth bending method, a single bent glass sheet bent only in a direction perpendicular to the conveying direction and a composite bent glass sheet having a curvature also in the conveying direction are used in the same gas hearth furnace. Will be manufactured. In order to maintain the high production efficiency that is a characteristic of the gas hearth bending method, it is desirable that the manufacturing process be capable of promptly performing a change operation of the manufacturing process in accordance with the product change.

  Various devices for conveying a composite bent plate glass plate are known (for example, Patent Documents 1 to 3). These patent documents relate to a device that conveys the composite bent glass plate to a subsequent process device after the composite bent glass plate is cooled while the composite bent glass plate is cooled while being continuously conveyed. It mentions.

  In Patent Document 1, since the glass plate is subjected to a composite bending process and cooled while being conveyed downward when passing over the hearth bed of the gas hearth furnace and the cooling device, the composite bent glass plate is received by a conveyance roll. It is described that the passing height position is lowered. As long as the existing gas hearth furnace production line is used, some sort of lift-up device should be used after the cooling device. However, in Patent Document 1, the composite bent glass plate is moved from a low position to an original high position. The transport mechanism for returning is not specifically described.

  Patent Document 2 discloses that a composite bent glass is formed from the last roll in a roll array in which a glass plate passes between upper and lower rolls arranged in a concave shape upward and is upwardly arranged in a concave shape. An apparatus is described in which the plate is transferred to a horizontal conveying means. Since the composite bent glass plate is conveyed while being sandwiched from above and below, it does not slide and slide down. However, it is necessary to arrange two rolls in the vertical direction and to adjust and maintain the distance between the vertical rolls.

In Patent Document 3, a disk roll conveyor is connected to a downstream side of the cooling device attached to the gas hearth furnace in a downward direction with respect to the conveying direction of the glass plate and inclined to one side. The composite bent glass plate that is conveyed in an inclined manner gradually returns to the horizontal state, and is transferred to a belt conveyor having an upward gradient in the next process, and further transferred to a belt conveyor installed horizontally in the subsequent process. Are listed. However, if there is a large difference in height between the outlet portion of the cooling device and the belt conveyor installed horizontally at the delivery destination, this device has a drawback that the bent glass plate cannot be conveyed. In order to avoid this, in the invention described in Patent Document 3, the height difference between the outlet end of the cooling device and the horizontally fixed belt conveyor is reduced by increasing the upward slope of the gas hearth bed. Yes.
Japanese Patent Publication No.49-10331 (U.S. Pat. No. 3,409,422) JP 60-86042 A (US Pat. No. 4,540,426) Japanese Patent Laid-Open No. 5-9037 (U.S. Pat. No. 6,014,873)

  The present applicant has previously filed an application concerning an invention relating to a hearth bed of a gas hearth furnace in order to shorten the switching loss time when switching between a single bent glass plate and a composite bent glass plate (Japanese Patent Laid-Open No. 2002-316828). And Japanese Patent Application No. 2002-339029). However, shortening the switching loss time is important not only for the above hearth bed changing operation, but also for changing the conveying device after the bent glass sheet cooling device to shorten the switching operation time.

  The gas hearth bending method and the roller hearth bending method are methods in which the plate glass is bent continuously while being conveyed in the horizontal direction from the upstream side (input side) to the downstream side (extraction side). The productivity of processing is very high, and it has the merit that it can be produced in large quantities at low cost. In such a continuous bending method apparatus, it is not always easy to transport a glass plate having a curved surface.

  When manufacturing a composite bent glass plate, the bent glass plates after the final bed are transported downward with respect to the transport direction, so that the cooling device on the extended line is inevitably installed at a downward slope. For this reason, the composite bent glass sheet discharged from the cooling device is at a lower position than the single bent glass sheet, and it is necessary to return the lower position to the original height.

    When the single bent glass plate and the composite bent glass plate are produced alternately using the same bending production line, the delivery path of the bent glass plate between the outlet of the cooling device and the next process is: When producing a single bent glass sheet, it is a substantially horizontal path (conveying system A), and when producing a compound bent glass sheet, it is a path (conveying system) that is refracted in the vertical direction with a drop in elevation between delivery. B).

    For this reason, when producing a composite bent glass sheet after producing a single bent glass sheet, the delivery device must be replaced because the delivery path is different. In addition, when there is a large drop in height in the middle of the transport path between delivery, the composite bent glass plate transported on the roll conveyor is likely to slide or get caught at that location, and the composite bend The conveyance of the glass plate is stagnant.

  Since the distance from the outlet of the cooling unit of the gas hearth bending line to the horizontally fixed plain roll conveyor is short, if there is a large height difference in the middle of the delivery, the roll conveyor conveyance surface will be inclined with respect to the conveyance direction. The angle becomes steep and the composite bent glass plate slides down the inclined surface. When a composite bent glass sheet is transported on a roll conveyor transport surface having a constant inclination angle, especially when it is transported on an ascending slope surface, the composite bent glass sheet may slide down even at a relatively steep inclination angle. Although there are few, if the concave refracting part F exists in the conveyor conveyance surface of a conveyance roll conveyor, a composite bending glass plate may be caught in this concave refracting part, and roll conveyance may become impossible.

  Here, the roll conveyor conveyance surface is a lower surface of a plate material that is in contact with the plurality of rolls by placing the plate material on a plurality of front and rear rolls, and the concave refracting portion F is a roll adjacent to the front and back. It is a concave boundary part formed with the boundary part where the conveying surfaces of the conveyor contact each other as the apex angle. FIG. 1 shows five positions of the concave refracting portion F in the transport system B. The concave refracting portion F formed between the down-gradient roll conveyor conveyance surface and the up-gradient roll conveyor conveyance surface has a valley shape and is the lowest portion of the conveyance path B. The composite bent glass plate is most easily caught in the valley-shaped concave refracting portion F which is the lowest portion. A plurality of rolls arranged in parallel on the same frame forms a flat conveyor conveyance surface, so if the inclination angle of the frame supporting the plurality of rolls is changed, an inclined flat conveyor conveyance surface is formed. To do.

  In the present invention, between a relatively short distance from the outlet of the cooling device to the horizontally fixed plain roll conveyor, the conveyance path of the conveyance system B having a height difference and the conveyance system A installed horizontally are arranged. Set the transport route. In response to this request, the disk roll conveyor is an integrated linear conveyor that does not bend, and the plain roll conveyor is a bendable conveyor, as represented by the transport system A or the transport system B. When the work to change to a transfer route is automated, the manufacture of the transfer device is easy, the maintenance work of the device is simple, and even if there is a large difference in height during delivery, the composite bent glass plate is caught. It has been found that this is a transfer device that is less likely to cause

  In the disk roll conveyor of the present invention, a plurality of disk rolls coated with a heat-resistant resin are rotatably supported at predetermined intervals on a vertical plate surface constituting the disk roll unit. A plurality of vertical plates are arranged in parallel along the conveying direction with a predetermined interval in the width direction of the conveyor. Since the disc rolls are arranged at a predetermined interval on the vertical plate surface of the disc roll unit, a plurality of disc rolls as seen in the width direction of the conveyor are arranged in a line.

  Thus, since it is a disc roll conveyor in which a gap is formed between the front, rear, left and right discs, when the bent glass plate is accidentally crushed when it leaves the cooling device, the broken pieces of the bent glass plate are moved downward. It can be dropped on the floor without delay. Further, the outer periphery of the disk roll is covered with a heat-resistant resin material, and the top of the disk roll in a row is convex so that it substantially conforms to the shape of the lower surface of the bent glass plate with respect to the width direction of the conveyor. Since it is arranged so as to form the disc roll envelope, the contact area between the disc roll and the bent glass plate is increased, and the frictional resistance between the disc roll and the bent glass plate is increased. It is possible to prevent the bent glass plate from sliding down the inclined surface when the conveyance system B has an inclined gradient downward. Further, the function of the disk roll when pushing the composite bent glass plate from the disk roll area to the first plain roll conveyor unit area of the plain roll conveyor capable of refraction is made more effective.

  Further, the disk roll conveyor is disposed on an integral frame, and the disk roll conveyor is set to a downward slope by setting the downstream height position of the frame lower than the upstream height position. The At this time, the upstream height adjusting device is provided with a rotating shaft in a direction crossing the roll conveyor, and a rotating mechanism capable of rotating the frame so that the frame tilts as the downstream height decreases. I have it. The height and angle adjusting device can easily adjust the inclination angle of the conveying surface of the disk roll conveyor.

  Also, when manufacturing a bent glass plate having a different curvature with respect to the width direction of the roll conveyor, the vertex position of the disk roll is changed, and the envelope of the disk roll apex position with respect to the width direction of the roll conveyor is It is desirable to change it so that it substantially matches the curvature of. When the bent glass plate is transported in the gas hearth and the cooling device, it is tilted toward the drive chain for supporting and transporting the bent glass plate. The vertex position of is set. Accordingly, the inclination in the width direction of the disc roll conveyor is only adjusted at the height position of the apex portion of the disc roll, and the frame of the disc roll conveyor is kept horizontal with respect to the width direction of the roll conveyor.

  A refractable plain roll conveyor covered with heat-resistant resin is connected adjacent to the downstream end of the disk roll conveyor, and the bent glass plate is conveyed from the disk roll conveyor side to the refractable plain roll conveyor side. Is done. The plain roll conveyor capable of refraction is composed of a plurality of plain roll conveyor units, and each plane conveyor unit is integrally installed on each frame and is mounted at four corners of the frame. It is possible to adjust the height of each of the four corners by a device for adjusting the height position. Also, one of the roll axes of the plain conveyor unit is shared with the rotation axis of the frame. When the inclination angle with respect to the transport direction of the plain roll conveyor unit changes by adjusting the height position, the rotation axis is As a center, the plain roll conveyor unit rotates. By this height and angle adjusting device, the inclination angle of the conveying surface of the plain roll conveyor unit can be easily adjusted.

  Using this height position and tilt angle adjusting device, the disc roll conveyor is arranged in a descending gradient from the transport system A in which the disc roll conveyor and the refractable plain roll conveyor are arranged horizontally, In addition, the plurality of plane roll conveyor units in the latter half of the plain roll conveyor capable of refraction can be changed to a conveying system B having a height difference arranged so as to form an upward slope. Therefore, it is easy to switch between the transport system A and the transport system B by adjusting the height and inclination angle of each roll conveyor device without replacing all the conveyor devices. In addition, if the height positions of the transport system A and the transport system B are set in advance in the storage device section of the height adjustment device, the actuator (screw jack) of the height adjustment device is operated during the switching operation. The transfer system switching operation can be completed automatically and promptly without going through.

  Further, in the present invention, since the plurality of plain roll conveyor units constituting the plain roll conveyor capable of refraction can adjust the height of each of the four corners to adjust the inclination angle of the roll conveyor conveyance surface, It can be set so that the conveyor conveyance surface at the connecting portion of the plain roll conveyor unit that moves back and forth is continuous. With this continuous plain roll conveyor unit, the entire plain roll conveyor capable of refraction is formed, and the composite bent glass plate can be conveyed without stagnation. At this time, by reducing the angle difference between the successive roll conveyor conveyance surfaces forming the concave refracting portion F, that is, by bringing the inner angle formed by the two conveyor conveyance surfaces in the concave refracting portion F closer to 180 degrees, The conveyance system B in which the composite bent glass plate is not caught can be set. It is preferable that the angle difference between the roll conveyor conveyance surfaces is within 7 degrees, desirably within 6 degrees, and more desirably within 5 degrees. In terms of an internal angle, it is preferably 173 degrees or more, desirably 174 degrees or more, and more desirably 175 degrees or more. Moreover, it is preferable that the length of the conveyance direction of a roll conveyor conveyance surface is more than half of the length of the composite bent glass plate normally produced.

  In the present invention, when manufacturing a bent glass plate having a different curvature with respect to the width direction of the roll conveyor, a mechanism that can easily change the vertex position of the disk roll by a simple operation is incorporated in the disk roll conveyor. . For this reason, dividing the disk roll conveyor into a plurality of disk roll conveyors and making the disk roll conveyor capable of refraction is such that the apex position changing mechanism and the inclination changing mechanism for refraction overlap, and the mechanism of the disk roll conveyor is It becomes very complicated. If the disc roll conveyor can be refracted, the angle difference of the roll conveyor conveyance surface is within 7 degrees, preferably within 6 degrees, in order to prevent catching in the concave refracting portion of the disc roll conveyor. More preferably, since it is desired to set the angle within 5 degrees, it is necessary to provide a plurality of refracting portions, the total length of the disk roll conveyor becomes long, and the disk roll apex position changing mechanism that cannot perform the position changing operation with one touch is More than required by the configuration of the invention.

  In the present invention, the envelope of the disk roll apex position with respect to the width direction of the disk roll conveyor is inclined to one side (drive chain side) of the conveyor width direction (several degrees, usually about 3 to 5 degrees). ) The plane roll axis of a plurality of plain roll conveyor units close to the disk roll conveyor side of the deflectable plain roll conveyor connected to the disk roll conveyor is set in one direction as described above. Tilted. The plain roll shaft has a plain roll bearing mechanism that becomes horizontal from an inclination of several degrees as it advances from the upstream end of the deflectable plain roll conveyor to the intermediate portion (from the first conveyor to the second conveyor). is doing. Also, at least the inclined plain roll of the plain roll conveyor capable of refraction has a disc-shaped collar (sleeve) that receives the end face of the glass plate at the end of the inclined roll. ing. The lower surface of the inclined bent glass plate abuts against the surface of the flange, assisting the frictional force caused by the contact between the plain roll surface and the bent glass plate, and the bent glass plate does not slide down or up. Be transported.

  By using a transfer apparatus between the bent glass sheet cooling apparatus and the next process, which is composed of a disk roll conveyor according to the present invention and a plain roll conveyor capable of refraction, a plain roll is used. It becomes easy to adjust the inclination angle with respect to the conveying direction of the conveyor unit, and by reducing the difference in inclination angle formed by the conveying surfaces of the conveyor devices that follow each other, even in the middle of a refracted conveying system with a difference in height, It becomes a conveyance path | route which a composite bending glass plate does not get stuck and stagnates.

  The conveyance device of the present invention sets a conveyance system B having a height difference as shown in FIG. 1 between a relatively short distance from the outlet portion of the cooling device 2 to the horizontally fixed plain roll conveyor 10. The composite bent glass plate 16 is transported without stagnation. This transport device can be easily changed to a transport device of a substantially horizontal transport system A by a one-touch operation by adjusting the height and inclination angle of the transport surface of each roll conveyor 3, 5, 6, 7, 8, 9. The In FIG. 1, the composite bent glass plate 16 descends from the disk roll conveyor 3 from the exit of the lower quench 12 of the cooling device 2, transfers to the first conveyor area 5 of the plain roll conveyor 4 that can be refracted, and the second conveyor area. 6. Sequentially conveyed to the third conveyor area 7 and finally delivered to the plane roll conveyor 10 fixed horizontally.

  FIG. 2 is a cross-sectional view of the disk roll conveyor 3, and is a disk roll unit erected on the upper surface of the two cam shafts 23 spanned on the conveyor frame 28 and the cam 22 fixed to the cam shaft 23. 2 shows a vertical plate constituting the disc 21 and a disc roll 13 pivotally supported on the vertical plate surface of the disc roll unit 21. The cam 22 has a polyhedron (polygonal flat plate) shape, and a plurality of cams 22 are passed through the flat plate surface of the cam with a gap between them in a predetermined combination. Are arranged. Since the length from the axial center of the cam shaft 23 to the upper surface of the cam is set to a specific length for each side of the cam, the cam shaft 23 is rotated to select a specific upper cam side. Thus, the height of a certain cam upper side can be selected, and the height position of the vertical plate of the disk roll unit 21 standing on the cam upper side can be set to a certain height. In other words, the height position of the apex portion of the disk roll 13 pivotally supported by the vertical plate of the disk roll unit 21 can be set to a specific height.

  A specific vertical plate of the disc roll unit 21 is supported at two locations on the upstream side and the downstream side by the cam 22 having the same shape at the lower side of the vertical plate, so that the same cam upper side height is selected. Are fixed to two camshafts 23 on the upstream side and the downstream side. Thereby, the apex position of the disk roll 13 becomes the same height with respect to the cam shaft 23, that is, with respect to the conveyor frame 28 from the upstream side to the downstream side. On the other hand, the cams 22 arranged in the width direction of the conveyor of the camshaft 23 are the same as the number of vertical plates of the disk roll unit 21, and the apex position of the disk roll 13 looking through the width direction of the conveyor is a curved surface of the bent glass plate. A combination of cam top side heights is selected that forms a disc roll envelope along.

  On the lower side of the vertical plate constituting the disc roll unit 21, U-shaped kerfs are formed at a plurality of positions at intervals from the lower side to the upper side. A shaft (not shown) is inserted in the width direction of the conveyor. Pipes having an outer diameter larger than the width of the groove are passed through the shaft by a number one more than the number of vertical plates of the disk roll unit 21. The plurality of vertical plates of the disk roll unit 21 are inserted into a gap between the large diameter pipe and the large diameter pipe and tightened from the outside to be integrated into the rigid disk roll unit 21. Although the tightening clamp is not shown in the figure, the disk roll unit 21 is fixed to the conveyor frame 28 at the same time because it is mounted on the conveyor frame 28 of the disk roll conveyor 3.

  If the clamp (not shown) is removed and the tightening is loosened, the plurality of vertical plates of the disc roll unit 21 move in the vertical direction within a range that does not come off the shaft inserted through the U-shaped kerf. Therefore, the height position of the vertical plate can be adjusted. The disc roll unit 21 erected on the upper surface of the cam 22 is released upward together with a shaft using a jack device not shown. In this state, that is, in a state where the cam 22 and the disc roll unit 21 are separated, the cam shaft 23 is rotated, and the desired cam upper surface, that is, the desired cam upper surface height is selected, which corresponds to the desired glass curved surface. The vertex position of the disk roll 13 to be selected can be selected. This also forms a group of disc roll envelopes, that is, a disc roll envelope surface, inclined to one side (drive chain side) in the width direction of the conveyor (several degrees, usually about 3 to 5 degrees). .

  FIG. 3 is a front view of the disk roll conveyor 3 as viewed from the side. The apparatus for adjusting the height and angle of the disk roll conveyor 3 is configured as follows. The entire disk roll conveyor including the conveyor frame 28 has two L-shaped brackets 27 (27u) at the four corners thereof on the upstream side and the downstream side via the slide rail 24, the bearing guide 25, and the link mechanism 26. 27d). The L-shaped brackets 27u and 27d are lifted and lowered by a lifting mechanism 32 having a screw jack 30 (see FIG. 2) rotated by an electric motor (not shown). A rotating shaft 29 is provided above the upstream L-shaped bracket 27 u, and the rotating shaft is supported by the conveyor frame 28.

  When the disk roll conveyor 3 is tilted, if the L-shaped bracket 27d on the downstream side of the conveyor frame 28 is lowered, the conveyor frame 28, that is, the disk roll conveyor 3 rotates and tilts around the rotation shaft 29. The conveyor frame 28 is connected to the L-shaped bracket 27 d via the slide rail 24 and the bearing guide 25 in order to follow the movement in the transport direction when tilted. Further, a link mechanism 26 is provided between the bearing guide 25 and the L-shaped bracket so that the conveyor frame 28 can freely tilt with respect to the L-shaped bracket 27d.

  FIG. 4 shows a cross-sectional view of the plain roll conveyor unit (5, 6, 7). Height adjusting devices are provided at the four corners of the plain roll conveyor unit. This height adjusting device is substantially the same mechanism as the height adjusting device of the disk roll conveyor 3, but the L-shaped brackets 47 (47uf, 47ub, 47df, 47db) respectively provided at the four corners are screws. The elevation mechanism 51 provided with the jack 50 can individually adjust the height. The roll conveyor conveyance surface composed of the plain rolls 14 inclined toward the collar portion (sleeve) 43 holds the L-shaped brackets 47ub and 47db of the height adjusting device provided on the other side (the side without the collar) high. It is formed by doing. Here, u is an upstream side, d is a downstream side, f is a front side, that is, a buttock side, and b is a side opposite to the heel part, that is, a back side.

  At this time, the shaft of the plain roll 14 is pivotally supported to the bearing on the sprocket 31 side of the drive chain that drives the plain roll so as to be prevented from moving in the axial direction. Since the bearing 34 on the rear side (without the bracket) is supported so as to be slidable and slidable in the axial direction, the plain roll shaft 42 on the side without the flange is axial with respect to the bearing. Is not constrained to move. Therefore, following the positional relationship of the L-shaped bracket 47, the angle and length of the shaft of the plain roll 14 can be freely adjusted.

  FIG. 5 is a front view when a part of the plain roll conveyor unit (5, 6, 7) is viewed from the side. The inclination of the axis of the plain roll 14 is gradually inclined to one side from the first plain roll conveyor unit 5 to the second plain roll conveyor unit 6 and further to the third plain roll conveyor unit 7 (several degrees, usually 3 degrees). From 5 degrees to 5 degrees. In this specification, the inclination angle is exaggerated for easy understanding in any figure.

  Moreover, the roll conveyor conveyance surface inclined in the conveyance direction is formed by changing the height positions of the upstream and downstream L-shaped brackets 47. For example, the second plain roll conveyor unit 6 in FIG. 5 is drawn with its inclination emphasized, but in order to obtain the roll conveyor conveyance surface as shown in the drawing, the height of the L-shaped bracket 47 is higher. To 47 ub, 47 db, 47 df, 47 uf. When the bendable plain roll conveyor unit 4 is inclined in the transport direction, one of the axes of the plain roll 14 on the downstream side of the conveyor unit, for example, the second conveyor axis from the downstream side, the entire conveyor is It is shared as a rotating shaft 49 for tilting. The conveyor frame 52 of the plain roll conveyor unit is supported on four L-shaped brackets 47 via link mechanisms 46, slide rails 44, and bearing guides 45 at the four corners thereof. The height is raised and lowered by a lifting mechanism provided with a screw jack.

  However, the plain roll units 8 and 9 that do not require the plain roll to be tilted toward the front side (the side with the flange) are provided with one L-shaped bracket 47 on the upstream side and the downstream side, respectively. The height can be adjusted with one identical L-shaped bracket. Further, the plain roll conveyor unit 9 closest to the horizontally fixed plain roll conveyor 10 omits the downstream height position adjusting device and rotates the final conveyor roll axis to incline the roll conveyor conveyance surface. A simple mechanism may be used.

  FIG. 6 shows the conveyance surface of the roll conveyor set before and after the conveyance direction, the valley-shaped concave refracting portion F formed on both conveyor conveyance surfaces, and the angle difference θ between both conveyor conveyance surfaces. . The angle difference θ of the conveyor conveyance surface is set within 7 degrees, desirably within 6 degrees, and more desirably within 5 degrees, so that the composite bent glass plate does not get caught in the lowest part of the conveyance path and has a valley-like concave refraction. Part F is formed. At this time, it is preferable that the inner angle formed by both roll conveyor conveyance surfaces is 173 degrees or more, desirably 174 degrees or more, and more desirably 175 degrees or more.

  FIG. 7 shows a schematic diagram of an embodiment of the transport system A and the transport system B. The distance from the exit part of the cooling device 2 to the entrance of the plain roll conveyor 10 fixed horizontally is about 6.3 m. In the transport system A, the disc roll conveyor 3 of about 2 m and the first to fifth plain roll conveyor units 5, 6, 7, 8, 9 having a length of about 0.8 m are arranged almost horizontally, The bent glass plate is conveyed horizontally on a series of roll conveyors. A slight gap is provided between each roll conveyor, and an allowable gap is provided so that the conveyors do not contact at both ends in the transport direction when refracted. In FIG. 7, the inclination angle of the transport surface is indicated by a minus sign for a downward slope and a plus sign for an upward slope.

  On the other hand, in the transfer system B, a delivery path having a drop of about 0.4 m in height is formed between the horizontal distance of 6.3 m. In the transport system B, the upper part and the lower quenches 11 and 12 of the cooling device 2 are set to a downward inclination angle. The inclination angle is adjusted by the value of the radius of curvature in the conveying direction of the composite bent glass plate or the shape of the final bed of the gas hearth furnace. The disk roll conveyor 3 sets the inclination angle of the conveyor conveyance surface to about 8 degrees downward with respect to the conveyance direction so that the conveyance surface of the disk roll conveyor 3 is substantially along the inclined surface of the cooling device. The first plain roll conveyor unit 5 is similarly inclined downward in the conveying direction, and the angle difference θ of the roll conveyor conveying surface between the disk roll conveyor 3 and the first plain roll conveyor unit 5 is set to about 5 degrees. To do. Therefore, the conveyance surface of the first plain roll conveyor unit 5 has a downward slope of about 3 degrees. The second plain roll conveyor unit 6 has an upward slope with respect to the conveyance direction, and the angle difference θ of the roll conveyor conveyance surface between the first plain roll conveyor unit 5 and the second plain roll conveyor unit 6 is about 5. Set to degrees. The transport surface of the second plain roll conveyor unit 6 is 2 degrees of upward gradient.

  Accordingly, in this case, the minimum height position is between the first plain roll conveyor unit 5 and the second plain roll conveyor unit 6. Similarly, the angle difference θ of the conveyor conveyance surface between the second and third plane roll conveyor units is 4 degrees, and the angle difference θ of the conveyor conveyance surface between the third and fourth plane roll conveyor units is approximately 3 degrees, the angle difference θ of the conveyor conveyance surface between the fourth and fifth plane roll conveyor units is set to about 2 degrees, and the plane roll conveyor 10 fixed horizontally with the fifth plane roll conveyor unit 9 The angle between the entrance and the entrance of the In this case, the inclination angles of the transport surfaces of the third, fourth, and fifth plain roll conveyor units are 6 degrees, 9 degrees, and 11 degrees, respectively, of the upward gradient.

  A composite bent glass plate having a thickness of 4.0 mm, a radius of curvature of 24,000 mm, a radius of curvature of 1240 mm in a direction perpendicular to the direction of conveyance, and a vertical and horizontal dimension of 518 mm × 823 mm, along such a conveyance path having a height difference. Was transported smoothly without being caught by the valley-shaped concave refracting part F in the lowest part of the transport system and without being caught by the concave refracting part F other than the lowest part. Here, the conveyance system B is a standard example. When the curvature in the conveying direction of the composite bent glass plate changes, that is, when the height position of the outlet part of the cooling device changes, the height position and the inclination angle of each roll conveyor are changed, and the roll conveyor in the concave refracting part F The angle of the conveyance surface of each roll conveyor is corrected so that the angle difference θ between the conveyance surfaces is within 7 degrees, desirably within 6 degrees, and more desirably within 5 degrees.

  The operation procedure when changing from the transport system A to the transport system B is as follows. (1) First, the bed of the gas hearth furnace is changed to a predetermined bed for composite bent glass. Next, the cooling device 2 is replaced with a device for composite bent glass, and the inclination angles of the quenches 11 and 12 are adjusted to a predetermined value. The quench is mounted to the cooling device so as to be rotatable about the base point on the upstream side of the quench, and by confirming in advance the height position on the downstream side of the quench that forms a predetermined inclination angle, the quench is performed. The inclination angle can be easily set to a predetermined angle.

  (2) Next, a clamp (not shown) that presses and fixes the vertical plate of the disc roll unit 21 that pivotally supports the disc roll 13 of the disc roll conveyor 3 is removed, and the entire disc unit is lifted by a jack device that is also not shown. . By rotating the camshaft 23 that passes through the conveyor frame 28 with respect to the width direction of the conveyor, a plurality of cams rotate simultaneously. Thereby, each height of the vertex part of the disk roll 13 arranged in a line can form a disk roll envelope of a certain predetermined shape. After the entire disk unit is lowered and the vertical plate of the disk roll unit 21 is placed on the upper side of the cam, the vertical plate is tightened and clamped to make the entire disk unit rigid.

  (3) Next, the inclination angle of the disk roll conveyor 3 is adjusted. First, in order to lower the entire conveyor frame 28 to the outlet portion of the cooling device 2, the height positions of the upstream and downstream L-shaped brackets 27 are lowered. The height of the upstream L-shaped bracket 27 u is adjusted so that the height of the inlet side of the disk roll conveyor is slightly lower than the height of the outlet of the lower quench 12 of the cooling device. The downstream L-shaped bracket 27d is adjusted to be lower than the upstream L-shaped bracket 27u so that the inclination angle of the entire frame is substantially equal to the inclination angle of the lower quench 12 of the cooling device.

  (4) Next, the inclination angle of the first plain roll conveyor unit 5 is adjusted. Lower the height positions of the two L-shaped brackets 47uf and 47ub on the upstream side (drive chain side) and the back side on the upstream side of the plain roll conveyor unit, and the entrance side of the first plain roll conveyor unit 5 Is adjusted to the height position of the exit portion on the near side of the disk roll conveyor 3 or slightly lower than the height position. The two L-shaped brackets 47df and 47db on the front side (drive chain side) and the back side on the downstream side are further lowered so that the transport surface of the first plain roll conveyor unit 5 is in the transport direction of the bent glass plate. The difference in inclination angle between the transport surfaces of the disk roll conveyor 3 and the first plain roll conveyor 5 is approximately so that the transport surface of the disk roll conveyor 3 is not inclined downward as much as the transport surface of the disk roll conveyor 3. It is adjusted within 7 degrees, preferably within 6 degrees, and more preferably within 5 degrees.

  (5) Next, the height of the L-shaped brackets 47 ub and 47 db that support the back side is made higher than the height position of the L-shaped brackets 47 uf and 47 df that support the front side, thereby forming an inclination in the width direction of the conveyor. Is done. At this time, compared to the difference in height position between the L-shaped bracket on the upstream side and the L-shaped bracket on the near side (height of 47 ub-height of 47 uf), the L-shape on the downstream side and the near side By adjusting the difference between the height positions of the brackets (height of 47 db-height of 47 df), the inclination of the plane roll shaft in the width direction is sequentially set to be small.

  (6) Similarly, the height position and the inclination angle of the second plain roll conveyor unit 6 following the first plain roll conveyor unit 5 are adjusted. Furthermore, the height position and inclination angle of the third, fourth, and fifth plain roll conveyor units are adjusted.

  In the above operations (3) to (6), the height position of each L-shaped bracket is stored in the storage device of the elevating mechanisms 32 and 51 so that the next time the same transport system B is prepared, the elevating and lowering is performed. By operating the storage device of the mechanism, the height position of each L-shaped bracket is automatically adjusted, and the conveyance system B can be set by one-touch operation.

The schematic diagram of the conveying apparatus in the case of the conveyance system B from a cooling device to a disk roll conveyor and a plain roll conveyor. The cross-sectional view of a disk roll conveyor. The front view of a disk roll conveyor. The cross-sectional view of a plain roll conveyor. The front view of a plain roll conveyor. A trough-shaped concave refracting portion formed by a roll conveyor. Schematic of the conveyance system A and the conveyance system B. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thermoforming furnace body 2 Cooling device 3 Disc roll conveyor 4 Plain roll conveyor which can be refracted 5 First plain roll conveyor unit 6 Second plain roll conveyor unit 7 Third plain roll conveyor unit 8 Fourth plain roll conveyor unit 9 First 5 plain roll conveyor unit 10 horizontally fixed plain roll conveyor unit 11 upper quench 12 lower quench 13 disc roll 14 plain roll 15 floor 16 bent glass plate 21 disc roll unit 22 cam 23 cam shaft 24 slide rail (disc roll conveyor)
25 Bearing guide
26 Link mechanism 27 L-shaped bracket (27u: L-shaped bracket on the upstream side,
27d: Downstream L-shaped bracket)
28 Conveyor frame 29 Rotating shaft 30 of disk roll conveyor Screw jack 31 Sprocket 32 of drive chain for conveyance Lift mechanism 34 Bearing 42 Plain roll shaft 43 Plain roll collar 44 Slide rail (plain roll conveyor unit)
45 Bearing guide 46 Link mechanism 47 L-shaped bracket (47uf: L-shaped bracket on the upstream side, front side,
47ub: L-shaped bracket on the back side on the upstream side, 47df: L-shaped bracket on the near side on the downstream side, 47db: L-shaped bracket on the back side on the downstream side)
49 Rotating shaft 50 of plain roll conveyor unit 50 Screw jack 51 Elevating mechanism 52 Conveyor frame F Concave refracting portion θ Angular difference of conveyor conveying surface

Claims (10)

The bent glass sheet conveying device is composed of a disc roll conveyor and a refracting plain roll conveyor connected adjacent to a downstream end portion of the disc roll conveyor. Equipped with a height and angle adjustment device that adjusts the height and inclination angle of the roll conveyor conveyance surface in a downward slope, the refraction capable plain roll conveyor is a plurality of plain roll conveyor units composed of a plurality of plain rolls. Each conveyor unit is equipped with a height and angle adjustment device that adjusts the height and inclination angle of each roll conveyor transport surface, and operates the height and angle adjustment device. By adjusting the inclination angle of the conveying surface of each roll conveyor constituting the entire conveyor device , A transport path of the transport system A in which the disc roll conveyor and the refractable plain roll conveyor are arranged substantially horizontally, and a plurality of disc roll conveyors arranged in a downward slope and constituting a refractable plain roll conveyor The at least a plurality of conveyor units on the downstream side of the plain roll conveyor unit of the bent glass plate can be switched to each other without changing the entire conveyor apparatus and the conveying path of the conveying system B forming an upward gradient. Conveying device. 2. The bending according to claim 1, wherein the conveying path of the conveying system A is a conveying path that conveys a two-dimensionally bent glass plate, and the conveying path of the conveying system B is a conveying path that conveys a three-dimensionally bent glass plate. Glass plate transfer device. In the disk roll conveyor, disk rolls arranged in a row at predetermined intervals with the axes of a plurality of discs aligned in a direction orthogonal to the transport direction are arranged in parallel at a plurality of rows in the transport direction. It is a roll conveyor installed, and the disk roll is rotatable at a predetermined interval on the vertical plate surface of the disk roll unit that is erected in parallel along the conveying direction. A cam that is pivotally supported and arranged so as to form a convex disk roll envelope that substantially conforms to the shape of the lower surface of the glass plate bent with respect to the width direction of the conveyor. The apparatus for conveying a bent glass sheet according to claim 1, wherein the apparatus is a disk roll conveyor mounted at a lower portion of the disk roll unit. The front end on the upstream side of the disk conveyor is connected adjacent to the outlet of a cooling device that rapidly cools the bent glass plate, and the final end on the downstream side of the plain roll conveyor capable of bending is horizontally The glass plate transport apparatus according to claim 3, which is connected adjacent to a front end portion of a plain roll conveyor that is fixedly installed. The disc roll envelope of the disc roll conveyor is inclined in one direction orthogonal to the transport direction, and the above-described refractable plain roll conveyor is a front end plain roll connected adjacent to the disc roll conveyor. The axis is inclined in one direction, similar to the inclination of the disk roll envelope, and the roll axis of the plain roll conveyor is inclined as it moves away from the front end of the plain roll conveyor capable of refraction and proceeds to the middle part. The plane roll of the plain roll conveyor capable of being bent is provided with the end face of the glass plate at the end of the inclined roll. The conveying apparatus of the bending glass plate described in Claim 3 which has a disk-shaped collar part to receive. The bent glass sheet conveying device is composed of a disc roll conveyor and a refracting plain roll conveyor connected adjacent to a downstream end portion of the disc roll conveyor. Equipped with a height and angle adjustment device that adjusts the height and inclination angle of the roll conveyor conveyance surface in a downward slope, the refraction capable plain roll conveyor is a plurality of plain roll conveyor units composed of a plurality of plain rolls. Each conveyor unit is equipped with a height and angle adjustment device that adjusts the height and inclination angle of each roll conveyor transport surface, and operates the height and angle adjustment device. By adjusting the inclination angle of the conveying surface of each roll conveyor constituting the entire conveyor device , A transport path of the transport system A in which the disc roll conveyor and the refractable plain roll conveyor are arranged substantially horizontally, and a plurality of disc roll conveyors arranged in a downward slope and constituting a refractable plain roll conveyor At least a plurality of conveyor units on the downstream side of the plain roll conveyor units can be switched to each other with the conveying path of the conveying system B forming an upward gradient, and the same bent glass can be used without replacing the entire conveyor device. A method of transporting a single bent glass plate in some cases, a composite bent glass plate in some cases, and a composite bent glass plate having a different curvature in other cases using a plate conveying device. The disk roll conveyor and plain roll conveyor unit are equipped with height position adjustment devices at the four corners of each, and the height positions of the four corners are stored for each production type of bent glass plate, and when changing the production type Reads the height position of each of the four corners and adjusts the height position to set the tilt angle of the transport surface of each roll conveyor with a single touch. 7. A method of conveying a bent glass sheet as claimed in claim 6, wherein the bent glass sheet is conveyed, or in some cases a compound bent glass sheet of different curvature. The method for conveying a bent glass sheet according to claim 7, wherein the height position and the inclination angle of each roll conveyor are adjusted via link mechanisms provided at four corners of the disk roll conveyor and the plain roll conveyor unit. In the transport path of the transport system B, the transport surfaces of the roll conveyors adjacent to each other form a concave refracting portion F whose apex angle is the bordering portion that is adjacent to each other, and both the transport surfaces in the concave refracting portion F form. The method for conveying a bent glass sheet according to claim 6, wherein the inner angle is 173 degrees or more, that is, the angle difference between the conveyance surfaces of the roll conveyor before and after forming the concave refracting part is within 7 degrees. In the transport path of the transport system B, the transport surfaces of the roll conveyors adjacent to each other form a concave refracting portion F whose apex angle is the bordering portion that is adjacent to each other, and both the transport surfaces in the concave refracting portion F form. The method for conveying a bent glass sheet according to claim 6, wherein the inner angle is 175 degrees or more, that is, the angle difference between the conveyance surfaces of the roll conveyor before and after forming the concave refracting part is within 5 degrees.