JP4835815B2 - Glass plate air cooling strengthening device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a glass plate air-cooling strengthening device, and more particularly to a glass plate air-cooling strengthening device that blows cooling air onto both surfaces of a curved glass plate that is bent and formed under high temperature conditions to wind-temper the glass plate.
[0002]
[Prior art]
Conventionally, a manufacturing apparatus for manufacturing curved glass plates such as automotive window glass by heating a glass plate to near the softening point in a heating furnace, bending it with a mold, and then rapidly cooling it with an air cooling strengthening device has been known. It has been.
[0003]
The air-cooling strengthening device is composed of a plurality of upper air outlet heads and a plurality of lower air outlet heads. When a curved glass plate is inserted between the upper blower head and the lower blower head, cooling air is blown from the air jet nozzle of the upper blower head to the upper surface of the curved glass plate, and a plurality of lower blower heads Cooling air is blown from the air injection nozzle to the lower surface of the curved glass plate. Thereby, the glass plate is strengthened by air cooling.
[0004]
[Problems to be solved by the invention]
By the way, when the glass plate is air-cooled and strengthened by the air-cooling and strengthening device, it is necessary to uniformly blow cooling air set to a predetermined temperature onto the glass plate. In other words, if cooling air with different temperatures is blown onto the glass plate, or if cooling air is blown unevenly on the glass plate, temperature unevenness occurs on the surface of the glass plate, causing distortion or unevenness in strengthening. is there.
[0005]
However, in the conventional air cooling strengthening device, the cooling air injected from the air injection nozzle is mixed with the high-temperature air staying between the air outlet head and the glass plate. Has a drawback that cooling air having a temperature higher than the set temperature is blown. In addition, the cooling air sprayed from the air spray nozzle is obstructed by the staying air and cannot be accurately blown onto the glass plate.
[0006]
The present invention has been made in view of such circumstances, and a glass plate air-cooling strengthening apparatus capable of producing high-quality tempered glass by stably performing air-cooling strengthening of a glass plate. The purpose is to provide.
[0007]
[Means for Solving the Problems]
  To achieve the above object, the present invention provides a plurality of upper air outlet members that blow cooling air onto the upper surface of a bend-formed high-temperature glass plate, and a plurality of lower air outlets that blow cooling air onto the lower surface of the glass plate. In the wind cooling strengthening device for a glass plate provided with a member, the plurality of upper air outlet members are arranged with a predetermined gap with respect to the adjacent upper air outlet member, and the plurality of lower air outlet members are adjacent to the lower portion A plurality of protruding blocks longer than the width of the upper blowing member are attached at predetermined intervals to each upper blowing member, and each lower blowing member is arranged with a predetermined gap with respect to the blowing member. A plurality of protruding blocks longer than the width of the lower outlet member are attached at a predetermined interval, and the surface of the protruding blockIs formed in an uneven shape, on the convex portion of the surfaceA number of air injection nozzles are formed,Each of the air ejection nozzles is arranged in a staggered pattern, and a concave portion on the surface of the projecting block is formed in a groove shape between the air ejection nozzles, and the air ejection nozzle is inclined with respect to the glass plate. An air injection nozzle havingWhile cooling air is blown onto the glass plate from these air injection nozzles, the protruding block has one end in the lengthwise direction formed in a convex shape, and the other end has the protruding one end. In order to escape, it is formed in a concave shape.
  The convex part of the surface of the projecting block has a surface facing the glass plate and a tapered surface inclined with respect to the glass surface at the edge, and the air injection nozzle has the surface facing the surface and the taper. It is preferable that they are arranged on each surface.
  It is preferable that a convex portion on the surface of the protruding block is formed in a substantially king shape, the air injection nozzle is formed on the convex portion, and the concave portion functions as a cooling air escape groove.
  In the air-cooling strengthening apparatus in which a plurality of the projecting blocks are attached, the ratio of the area of the gap, which is the area of the portion without the projecting blocks, to the area of the entire blowing port that is a plane parallel to the glass plate is It is preferable that it is 25 to 60%.
[0008]
The present invention finds out that high-temperature air staying between the air outlet member of the air-cooling strengthening device and the glass plate is a cause of lowering the quality of the glass plate, and eliminates this.
[0009]
  BookIn the invention, the plurality of upper air outlet members are arranged with a predetermined gap with respect to the adjacent upper air outlet member, and the plurality of lower air outlet members are arranged with a predetermined gap with respect to the adjacent lower air outlet member. Thus, when the upper and lower air outlet members are arranged with a gap, the cooling air that has collided with the glass plate from the air injection nozzle does not stay between the air outlet member and the glass plate and is efficiently discharged to the outside through the gap. Therefore, the above-mentioned problem caused by the staying air can be solved. However, if the upper and lower air outlet members are arranged with a gap, the interval between the air injection nozzles formed on the adjacent upper air outlet members and the interval between the air injection nozzles formed on the adjacent lower air outlet members are widened. The glass plate cannot be sprayed uniformly.
[0010]
In order to prevent this problem, in the present invention, a plurality of protruding blocks wider than the upper air outlet member are attached to each upper air outlet member at a predetermined interval, and each lower air outlet member is attached to each lower air outlet member more than the lower air outlet member. A plurality of wide protruding blocks are attached at predetermined intervals, and a number of air injection nozzles are formed on the surface of these protruding blocks, and cooling air is blown from these air injection nozzles onto the glass plate. . Thereby, since an air injection nozzle is arrange | positioned in the clearance gap between an upper and lower blower member, even if it arrange | positions an upper and lower blower member with a clearance gap, cooling air can be uniformly sprayed on a glass plate.
[0011]
Further, according to the present invention, one end portion of the protruding block in the length direction is formed in a convex shape, and the other end portion is formed in a concave shape, and the convex portion is allowed to escape into the concave portion. When the projecting block is formed in this way, the air injection nozzles can be densely arranged on the surface formed by the plurality of projecting blocks while having the gap in the state where the air outlet member approaches. The entire surface of the glass plate can be cooled uniformly.
[0012]
  BookAccording to the invention, the surface of the projecting block is formed to be uneven, the air injection nozzle is formed on the protrusion, and the recess is used as a retention air escape groove. It efficiently flows into the gap between the lower outlet members and is discharged to the outside.
[0013]
  BookAccording to the invention, since the air injection nozzles are arranged in a staggered manner on the surface formed by the plurality of protruding blocks, the entire surface of the glass plate can be uniformly cooled.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a glass sheet air-cooling strengthening apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing a structure of a glass plate forming apparatus including a glass sheet air-cooling strengthening apparatus according to an embodiment. Moreover, the glass plate shaping | molding apparatus shown in FIG. 1 is a shaping | molding apparatus of the side glass for motor vehicles.
[0015]
A heating furnace 12 is provided on the upstream side of the glass plate forming apparatus 10 in the conveyance direction of the glass plate. A roller conveyor 14 is disposed in the heating furnace 12. The glass plate 16 to be formed is conveyed in the heating furnace 12 in the direction of arrow A in FIG. 1 by the roller conveyor 14, and is heated to near the softening point (about 650 to 700 ° C.) at the outlet of the heating furnace 12.
[0016]
The heated glass plate 16 is conveyed to the glass plate forming apparatus 10 by the roller conveyor 14. Here, the peripheral surface of the lower surface of the glass plate 16 is supported by a press ring 18 formed in a frame shape along the contour shape of the glass plate 16. The glass plate 16 supported by the press ring 18 is moved toward the upper mold 20 by the upward movement of the press ring 18 indicated by the upper arrow B in FIG. The upper mold 20 has a convex portion (not shown) formed at the lower portion thereof, and the glass plate 16 raised by the press ring 18 is pressed against the convex portion of the upper mold 20 along the convex portion. It is bent into a shape. In the embodiment, the upper mold 20 is fixed and the press ring 18 is raised and the glass plate 16 is bent. Conversely, the press ring 18 is fixed and the upper mold 20 is moved downward to move the glass plate. 16 may be formed by bending.
[0017]
The glass plate 16 that has been bent is moved by the moving device 22 that moves the press ring 18 in the horizontal direction while being supported by the press ring 18 in the direction of arrow C in FIG. The
[0018]
The air-cooling strengthening device 24 includes an upper blower box 26 on the upper side and a lower blower box 28 on the lower side with the glass processing stage S interposed therebetween. Ducts 30 are connected to the upper blower box 26 and the lower blower box 28, and blowers (not shown) are connected to these ducts 30. Therefore, when the blower is driven, the cooling air generated by the blower is supplied to the upper blower box 26 and the lower blower box 28 via the duct 30. The cooling air includes a plurality of upper blower heads (corresponding to a plurality of upper blower members) 32, 32... Installed in the upper blower box 26 shown in FIG. It blows off toward the glass processing stage S shown in FIG. 1 from the lower blower head (equivalent to a some lower blower member) 34,34 .... Thereby, both surfaces of the glass plate 16 supported by the press ring 18 are cooled and strengthened by air cooling.
[0019]
The air-cooled and strengthened glass plate 16 is conveyed to the inspection process by movement of another moving device (not shown) in the direction of arrow D in FIG. Here, the glass plate 16 is inspected for defects such as cracks, and those having no defect are conveyed to a non-defective process, and those having a defect are conveyed to a defective process.
[0020]
As shown in FIGS. 2 and 3, the air-cooling strengthening device 24 includes a plurality of upper air outlet heads 32, 32... And a plurality of lower air outlet heads 34, 34. Each projecting block 160 is attached.
[0021]
The plurality of upper blow heads 32, 32... Are long boxes, and are arranged so that the longitudinal direction thereof extends in a direction perpendicular to the paper surface in FIGS. It is formed longer than the length of. Further, a flexible tube 36 indicated by a two-dot chain line in FIG. 2 is connected to the upper part of each of the plurality of upper air outlet heads 32, 32, and this flexible tube 36 is connected to the duct 30. Therefore, the cooling air supplied to the duct 30 is introduced into the plurality of upper air outlet heads 32, 32. The air injection nozzles 162, 162,..., 164, 164, etc. of the projecting blocks 160, 160, which are attached to the lower portions of the plurality of upper nozzle heads 32, 32,. Cooling air is jetted downward from (see FIGS. 7 and 8).
[0022]
As shown in FIGS. 3 and 4, the plurality of upper air outlet heads 32, 32... Are a plurality of sets of quadrilaterals each including a pair of adjacent links 40 and 44 and a pair of adjacent links 42 and 46. Adjacent upper blowing heads 32, 32... Are connected to each other by a link mechanism. And the vertex formed by a pair of adjacent links 42 and 46 is arranged on the side facing the glass plate.
[0023]
Further, as shown in FIG. 4, a substantially triangular connecting plate 48 protrudes from each side portion of the upper outlet heads 32, 32... And the connecting plates 48, 48 of the adjacent upper outlet heads 32, 32. Are connected via a pin 50 so as to be rotatable. The link mechanism and the connection mechanism composed of the connection plate 48 and the pin 50 are arranged at both ends of the upper outlet heads 32, 32.
[0024]
The link 40 has an upper end portion rotatably connected to the slider 52 via a pin 54 and a lower end portion rotatably connected to a substantially central portion of the link 42 via a pin 56.
[0025]
The link 42 is rotatably connected to the block 58 via a pin 60. The block 58 and the slider 52 are slidably engaged with a guide rail 62 erected on the upper outlet head 32. The upper end portion of the link 42 is rotatably connected to the upper end portion of the link 46 via a pin 64.
[0026]
The lower end portion of the link 46 is rotatably connected to the block 58 of the adjacent upper air outlet head 32 via a pin 60, and the lower end portion of the link 44 is rotated via a pin 66 to the substantially central portion of the link 46. It is connected freely.
[0027]
The upper end portion of the link 44 is rotatably connected to the pin 54 of the adjacent upper air outlet head 32 together with the link 40 of the adjacent upper air outlet head 32.
[0028]
As shown in FIG. 2, among the plurality of upper air outlet heads 32, 32... Connected by the link mechanism, the upper air outlet heads 32, 32 positioned at the left and right ends in the drawing are connected to the lower ends of the arms 68, 68. Has been. The arms 68 and 68 are respectively connected to an actuator including a motor 70 and a worm mechanism 72, and are operated by rotating a shaft 74 by the actuator. That is, as shown in FIG. 5, the arm 68 is connected via a pin 78 to a link 76 whose upper end is connected to the shaft 74. Therefore, when the two shafts 74 and 74 are rotated in the direction of the arrow in FIG. 5, the upper ends of the arms 68 and 68 are moved in a direction approaching each other, and the shafts 74 and 74 are rotated in the direction opposite to the arrow. Then, the upper ends of the arms 68 and 68 are moved away from each other.
[0029]
When the arms 68 are operated in this way, the upper outlet heads 32, 32... Are moved to the predetermined swing fulcrum shown in FIG. 2 by the action of the link mechanism and the connection mechanism comprising the connection plate 48 and the pin 50. It is swung around A. That is, when the arms 68 and 68 are moved in a direction approaching each other, the slider 52 shown in FIG. 3 is moved upward along the guide rail 62, and the angle formed by the link 40 and the link 42 is increased. As a result, the curvature radius R1 of the curve C1 connecting the air injection nozzles 162, 164,... Of the projecting blocks 160, 160, attached to the upper outlet heads 32, 32,. When the arms 68 are moved away from each other, the slider 52 shown in FIG. 3 is moved down along the guide rail 62, and the angle formed by the link 40 and the link 42 is reduced. As a result, the radius of curvature R1 ′ of the curve C1 ′ connecting the air injection nozzles 162, 164. Therefore, if the swinging amount of the arms 68, 68 is controlled, the curvature radius R1 can be changed to an arbitrary curvature radius, so that the curvature radius R1 can be changed according to the curved surface shape of the glass plate 16. In FIG. 2, reference numeral 80 denotes a plate that rotatably supports the shafts 74, 74, and reference numeral 82 denotes a frame that supports the motor 70 and the worm mechanism 72.
[0030]
The plurality of lower air outlet heads 34, 34... Are long boxes, and are arranged so that the longitudinal direction thereof extends in a direction perpendicular to the paper surface in FIGS. The length is equal to 32. Further, a flexible tube 84 indicated by a two-dot chain line in FIG. 2 is connected to the lower portion of each of the plurality of lower outlet heads 34, 34..., And this flexible tube 84 is connected to the duct 30. Therefore, the cooling air supplied to the duct 30 is introduced into the plurality of lower air outlet heads 34, 34. Then, air jet nozzles 162, 164... Of projecting blocks 160, 160... Attached at predetermined intervals in the longitudinal direction of the lower blow head 34 at the upper part of the plurality of lower blow heads 34, 34. Cooling air is jetted upward.
[0031]
On the other hand, as shown in FIG. 3, the plurality of lower air outlet heads 34, 34... Have a plurality of sets of upper link mechanisms including a pair of adjacent links 90, 94 and a pair of adjacent links 92, 96. The adjacent lower air outlet heads 34, 34,... Are movably connected to each other by a plurality of sets of lower link mechanisms, each of which includes a pair of adjacent links 98, 102 and a pair of adjacent links 100, 104. And the vertex formed by a pair of adjacent links 92 and 96 is arranged on the side facing the glass plate. The upper and lower link mechanisms are disposed at both ends of the lower outlet heads 34, 34. Further, the upper and lower link mechanisms constitute the second link mechanism.
[0032]
The link 90 has an upper end portion rotatably connected to the lower air outlet head 34 via a pin 106 and a lower end portion rotatably connected to a lower end portion of the link 94 via a pin 108.
[0033]
A lower end portion of the link 92 is rotatably connected to a substantially central portion of the link 90 via a pin 110, and an upper end portion of the link 92 is rotatably connected to an upper end portion of the link 96 via a pin 112. Yes.
[0034]
A lower end portion of the link 96 is rotatably connected to a substantially central portion of the link 94 via a pin 114. The upper end portion of the link 94 is rotatably connected to the pin 106 of the adjacent lower air outlet head 34 together with the link 90 of the adjacent lower air outlet head 34.
[0035]
The link 98 of the lower link mechanism has an upper end portion rotatably connected to a lower portion of the lower air outlet head 34 via a pin 116 and a lower end portion rotatable to a lower end portion of the link 102 via a pin 118. It is connected.
[0036]
An upper end portion of the link 100 is rotatably connected to a substantially central portion of the link 98 via a pin 120, and a lower end portion of the link 100 is rotatably connected to the slider 122 via a pin 124. The slider 122 is slidably engaged with a guide rail 130 that is suspended from the lower outlet head 34.
[0037]
The upper end portion of the link 102 is rotatably connected to the pin 116 of the adjacent lower air outlet head 34 together with the link 98 of the adjacent lower air outlet head 34.
[0038]
An upper end portion of the link 104 is rotatably connected to a substantially central portion of the link 102 via a pin 126, and a lower end portion of the link 104 is adjacent to the pin 124 of the adjacent lower air outlet head 34 and the adjacent lower air outlet head 34. The link 100 and the link 100 are rotatably connected.
[0039]
The upper end portion of the link 105 is rotatably connected to the pin 108 of the upper link mechanism, and the lower end portion of the link 105 is rotatably connected to the lower link mechanism pin 118.
[0040]
As shown in FIG. 2, among the plurality of lower air outlet heads 34, 34... Connected by the upper and lower link mechanisms, the lower air outlet heads 34, 34 positioned at the left and right ends in the figure are the upper ends of the arms 132, 132. It is connected to. These arms 132 and 132 are respectively connected to an actuator including a motor 134 and a worm mechanism 136, and are operated by rotating a shaft 138 by the actuator. That is, as shown in FIG. 5, the arm 132 is connected via a pin 142 to a link 140 whose lower end is connected to the shaft 138. Therefore, when the two shafts 138 and 138 are rotated in the direction of the arrow in FIG. 5, the lower ends of the arms 132 and 132 are moved toward each other, and when the shafts 138 and 138 are rotated in the direction opposite to the arrow. The lower ends of the arms 132 and 132 are moved away from each other.
[0041]
When the arms 132 are operated in this way, the lower outlet heads 34, 34... Are swung around a predetermined swinging fulcrum A shown in FIG. 2 by the action of the upper and lower link mechanisms. That is, when the lower ends of the arms 132, 132 are moved toward each other, the curvature of the curve C2 connecting the air injection nozzles 162, 164,... Of the projecting blocks 160, 160,. The radius R2 increases as shown in FIG. When the lower ends of the arms 132, 132 are moved away from each other, the curvature radius R2 'of the curve C2' connecting the air injection nozzles 38, 38 ... of the upper outlet heads 32, 32 ... is as shown in FIG. Get smaller. Therefore, if the swing amount of the arms 132 and 132 is controlled, the curvature radius R2 can be changed to an arbitrary curvature radius, so that the curvature radius R2 can be changed according to the curved surface shape of the glass plate 16. Further, the upper and lower link mechanisms are arranged such that when the lower air outlet heads 34, 34... Swing, the air injection nozzles 162, 164. Are designed to swing the lower air outlet heads 34, 34. In FIG. 2, reference numeral 144 denotes a plate that rotatably supports the shafts 138 and 138, and reference numeral 146 denotes a frame that supports the motor 134 and the worm mechanism 136.
[0042]
Therefore, according to the air-cooling strengthening device 24 configured as described above, when the plurality of upper blowing heads 32, 32... Are swung around the rocking fulcrum A shown in FIG. The radius of curvature R1 of the curve C1 connecting the 32 air jet nozzles 38 can be easily changed according to the curved surface shape of the glass plate 16. When the plurality of lower air outlet heads 34, 34... Are swung around the swing fulcrum A, the air injection nozzles 88 of the lower air outlet heads 34, 34. The curvature radius R2 of the curve C2 connecting the air injection nozzles 138 of the plurality of lower air outlet heads 34, 34... Can be changed according to the curved surface shape of the glass plate 16 while maintaining the state facing the nozzle 38.
[0043]
Thereby, according to the air-cooling strengthening apparatus 24 of embodiment, since the curvature radii R1 and R2 can be changed rapidly, a job change can be eliminated substantially. Therefore, it is possible to efficiently produce a wide variety of glass plates 16 having different curved surfaces.
[0044]
On the other hand, the link mechanism of the upper outlet head 32 of the air-cooling strengthening device 24 is configured to be able to locally change the curvature radius R1. Explaining this structure, the pin 60 shown in FIG. 4 of the link mechanism is provided on a guide block 58, and the guide block 58 is supported on the guide rail 62 so as to be movable up and down. A stopper piece 148 protrudes from the lower portion of the guide block 58, and the end of the bolt 150 is in contact with the lower surface of the stopper piece 148. The bolt 150 is screwed into a nut member 152 provided in the upper outlet head 32 and is disposed therethrough. Therefore, when the bolt 150 is rotated in a direction protruding from the nut member 152, the guide block 58 is pushed up by the bolt 150. When the bolt 150 is rotated in the opposite direction, the guide block 58 is lowered by its own weight. Thereby, the position of the pin 60 is adjusted.
[0045]
As shown in FIG. 6, when the position of the pin 60 of the upper air outlet head 32D is shifted by a predetermined amount above the other upper air outlet heads 32A to 32C, the links 42 and 46 of the upper air outlet head 32D and the guide rail 62 The formed angle θ ′ is larger than the angle θ formed on the other upper air outlet heads 32A to 32C side. Thereby, the curvature radius r1 formed by the upper blower head 32C and the upper blower head 32D is smaller than the curvature radius R1 formed on the other upper blower heads 32A to 32C side. Therefore, since the radius of curvature R1 can be locally changed in the link mechanism, it is possible to cope with a glass plate in which the curvature of the curved surface of the glass plate 16 is locally different.
[0046]
Incidentally, in the air-cooling strengthening device 24 according to the embodiment, a plurality of projecting blocks 160, 160... Since the mounting structure of the upper outlet head 32 and the projecting block 160 is the same as the mounting structure of the lower outlet head 34 and the projecting block 160, the former mounting structure will be described here, and the description of the latter mounting structure will be omitted. To do.
[0047]
As shown in FIG. 7, the upper air outlet heads 32, 32... Are arranged parallel to the adjacent upper air outlet heads 32 with a predetermined gap 166. As described above, when the upper air outlet heads 32, 32... Are arranged with the gap 166, the interval between the upper air outlet heads 32, 32. That is, the radius of curvature by the link mechanism can be changed. Moreover, the cooling air which collided with the glass plate 16 (refer FIG. 1) from the air injection nozzles 162, 164... Of the projecting block 160 does not stay in the space between the upper blowing heads 32, 32. Are efficiently discharged from the gaps 166, 166,. Therefore, as it is, the cooling air sprayed from the air spray nozzles 162, 164. Therefore, the air-cooling strengthening device 24 according to the embodiment can accurately blow the cooling air onto the glass plate 16, so that the conventional problem caused by the staying air can be solved.
[0048]
In order to prevent stagnation of air, the ratio of the area of the gap (the area of the portion without the protruding block 160 in FIG. 7) to the area of the entire blowing port (surface parallel to the glass plate) is about 25 to 60%. In particular, it is more preferable that the content be about 35 to 50%. This is due to the following reason. The increase in the area of the gap makes it easier for the airflow to escape, but it becomes difficult to place the projecting blocks 160, so about 60% is considered the upper limit in design, and the degree of freedom in design by reducing the area of the gap However, it is difficult for the airflow to escape, so about 25% is considered to be a practical lower limit. Furthermore, it can be said that it is most preferable to set it to about 35 to 50% in consideration of a design margin, a test result by the present inventor and the like.
[0049]
On the other hand, when the upper air outlet heads 32, 32... Are arranged with a gap 166, the interval between the air injection nozzles formed in the projecting blocks 160, 160 of the adjacent upper air outlet heads 32, 32 is increased. There arises a problem that it is impossible to spray 16 uniformly.
[0050]
Therefore, in the air-cooling strengthening device 24 of the embodiment, in order to prevent this problem, the protruding block 160 is formed longer than the width of the upper air outlet head 32, and a large number of the entire surface of the protruding block 160 is formed. Air injection nozzles 162, 164... Were formed.
[0051]
7 is located at a position corresponding to the gap 166 as shown in FIG. 7, so that even if the upper outlet heads 32, 32... Are provided with the gaps 166, 166. Can be sprayed uniformly on the glass plate 16.
[0052]
Further, as shown in FIG. 7, the protruding block 160 has one end 160A in the length direction formed in a convex shape and the other end 160B formed in a concave shape. Therefore, when the upper air outlet heads 32, 32... Are swung in the approaching direction, one end 160A of the other protruding block 160 is connected to the other end 160B of one protruding block 160 adjacent in the length direction. Stored. That is, the convex portion can escape to the concave portion. When the projecting block 160 is formed in such a shape, the surface formed by the plurality of projecting blocks 160, 160... While maintaining the gap 166 in a state in which the upper air outlet heads 32, 32. Furthermore, since the air injection nozzles 162, 164,... Can be densely arranged in a staggered manner, the entire surface of the glass plate 16 can be cooled uniformly.
[0053]
Further, as shown in FIG. 8, the projecting block 160 has a convex and concave surface, air jet nozzles 162, 164,... Are formed in a staggered pattern on the convex portion 160C, and the concave portions 160D, 160D,. Since the grooves are used, the staying air can be efficiently discharged from the escape grooves 160D, 160D... Into the gap 166 in FIG.
[0054]
The convex portion 160C of the projecting block 160 is formed in a substantially king shape, and the three injection nozzles 162, 162, 162 formed side by side in the central portion thereof are arranged facing the glass plate 16.
[0055]
On the other hand, the three air injection nozzles 164, 164, and 164 formed on both sides of the air injection nozzles 162, 162, and 162, respectively, are opened to a tapered surface 160E formed at the edge of the convex portion 160C. . When the air injection nozzle 164 is formed on the tapered surface 160E, the area S2 where the cooling air injected from the air injection nozzles 162 and 164 hits the glass plate 16 as shown in FIG. 9 is larger than the area S1 when the tapered surface 160E is not formed. Become. Thereby, even if the clearance gap 166 between upper blower head 32, 32 ... spreads, cooling air can be sprayed on the glass plate 16 whole. In particular, the air-cooling strengthening device 24 according to the embodiment swings the upper air outlet head 32 using a link mechanism, and it is necessary to make the gap between the upper air outlet heads 32, 32... As large as possible. Is preferred.
[0056]
If the inclination angle θ of the tapered surface 160E is increased, the area S2 is increased, which is advantageous for the air-cooling strengthening device 24 using a link mechanism. However, if θ is excessively increased, the wind pressure of the cooling air striking the glass plate from the air injection nozzle 164 is significantly lower than the wind pressure generated by the air injection nozzle 162, so that there is a problem that the air cooling cannot be uniformly enhanced. For this reason, θ is set to an angle that does not give a problem to both.
[0057]
【The invention's effect】
As described above, according to the wind-cooling strengthening device for a glass plate according to the present invention, a plurality of upper air outlet members are arranged with a predetermined gap with respect to the adjacent upper air outlet members, and a plurality of lower air outlet members are arranged. A plurality of projecting blocks wider than the upper air outlet member are attached to each upper air outlet member with a predetermined gap with respect to adjacent lower air outlet members, and each lower air outlet member is attached to each lower air outlet member. A plurality of projecting blocks wider than the lower outlet member are attached at predetermined intervals, and a number of air injection nozzles are formed on the surface of these projecting blocks, and cooling air is supplied from these air injection nozzles to the glass plate. Since the glass plate is sprayed, the air cooling of the glass plate can be stably carried out, and thus high-quality tempered glass can be produced.
[Brief description of the drawings]
FIG. 1 is a structural diagram of a glass sheet forming apparatus to which a glass sheet air-cooling strengthening apparatus according to an embodiment is applied.
FIG. 2 is a structural diagram of a glass plate air-cooling strengthening apparatus according to an embodiment.
3 is a structural diagram of a link mechanism of the air-cooling strengthening device shown in FIG.
FIG. 4 is an enlarged structural view of a main part of a link mechanism of an air cooling strengthening device.
FIG. 5 is a structural diagram of a driving device that drives a link mechanism of the air-cooling strengthening device.
FIG. 6 is an explanatory diagram schematically showing the operation of the link mechanism of the air cooling strengthening device.
FIG. 7 is a plan view of a projecting block provided on the upper and lower outlet heads of the air-cooling strengthening device.
8 is a perspective view of the protruding block shown in FIG. 7;
FIG. 9 is a view for explaining an air injection range by an air injection nozzle formed in a protruding block.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Glass plate forming apparatus, 24 ... Air-cooling strengthening apparatus, 32 ... Upper blowing head, 34 ... Lower blowing head, 38 ... Air injection nozzle of upper blowing head, 40, 42, 44, 46 ... Link mechanism of upper blowing head , 88... Air jet nozzle of the lower outlet head, 90, 92, 94, 96. Upper link mechanism of the lower outlet head, 98, 100, 102, 104, 105. Lower link mechanism of the lower outlet head, 160. 162, 164 ... air injection nozzle, 166 ... gap

Claims (4)

A wind cooling strengthening device for a glass plate, comprising: a plurality of upper air outlet members that blow cooling air onto the upper surface of a bend-formed high temperature glass plate; and a plurality of lower air outlet members that blow cooling air onto the lower surface of the glass plate. In
The plurality of upper air outlet members are disposed with a predetermined gap with respect to the adjacent upper air outlet member, and the plurality of lower air outlet members are disposed with a predetermined gap with respect to the adjacent lower air outlet member,
A plurality of protruding blocks longer than the width of the upper blowing member are attached to each upper blowing member at a predetermined interval, and each lower blowing member has a protruding shape longer than the width of the lower blowing member. A plurality of blocks are attached at predetermined intervals,
The surface of the protruding block is formed in an uneven shape, and a number of air injection nozzles are formed on the protruding portion of the surface ,
The air ejection nozzles are arranged in a staggered manner,
The concave portion on the surface of the protruding block is formed in a groove shape between the air injection nozzles,
The air injection nozzle includes an air injection nozzle having an inclination angle with respect to the glass plate,
While cooling air is blown to the glass plate from these air injection nozzles,
The protruding block has one end in the length direction formed in a convex shape, and the other end is formed in a concave shape to escape the one end in the convex shape. Air cooling strengthening device. The convex portion of the surface of the protruding block is provided with a tapered surface inclined to the glass surface and a surface disposed facing the glass plate at the edge,
The glass sheet air-cooling strengthening apparatus according to claim 1, wherein the air injection nozzles are arranged on the facing surface and the tapered surface, respectively . The convex portion on the surface of the protruding block is formed in a substantially king shape, the air injection nozzle is formed in the convex portion, and the concave portion functions as a groove for escape of the cooling air. The air cooling strengthening apparatus of the glass plate of 1 or 2. In the air-cooling strengthening apparatus in which a plurality of the projecting blocks are attached, the ratio of the area of the gap, which is the area of the portion without the projecting blocks, to the area of the entire blowing port that is a plane parallel to the glass plate is It is 25 to 60%, The air-cooling strengthening apparatus of the glass plate of Claim 1, 2, or 3 characterized by the above-mentioned.

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