JP2000247663A - Bed structure for floating sheet glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of lessening the burden of an operator when regulating the air pressure distribution of a transporting bed. SOLUTION: This bed structure consists of the constitution obtained by preparing a plurality of flow passage regulating members 30,... for regulating the cross sections of flow passages by closing part of air discharge holes 20,..., and inserting the flow passage regulating members 30 into the air discharge holes 20 of the transporting bed 12 having a multiplicity of the air discharge holes 20 for floating sheet glass by an air pressure on curvilinear front surface 14 from above. The shapes are provided with differences by each of kinds in such a manner that the flow passage regulating members 30 may be discriminated when viewed from above. The easy visual discrimination of the kinds of the flow passage regulating members 30 inserted into the air discharge holes 20 is, therefore, made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet glass floating bed structure for bending a sheet glass while floating the sheet glass with heated air.

[0002]

2. Description of the Related Art Curved sheet glass is used for automotive window glass.
There is a method in which a sheet glass is bent while being floated by heated air. A typical example of this device is disclosed in Japanese Patent Application Laid-Open No. 9-1324.
No. 20, "Method and Apparatus for Bending Sheet Glass". The main part of the publication will be described again with reference to the following figure. However, the sign has been renewed.

FIG. 18 is a perspective view of a conventional sheet glass bending apparatus, in which air injection holes 102 for injecting heated air are formed on a curved upper surface 101 of a transport bed 100, and are adjacent to the air injection holes 102. A state is shown in which air discharge holes 104 for discharging heated air are formed, and air discharge amount adjusting means 105 for adjusting the discharge amount of the air discharge holes 104 is mounted. By rotating the handle 106 of the air discharge amount adjusting means 105, the discharge pipes 107 are rotated, and the discharge pipes 10 are rotated.
7 are arranged at predetermined positions of the air discharge holes 104. In addition, 108 is a sheet glass.

FIG. 19 is a sectional view taken along line FF of FIG.
Heated air is supplied from below the transport bed 100 to the air injection holes 102 as indicated by arrows a and is jetted onto the curved upper surface 101 as indicated by arrows b.
Are heated, and the heated air folded back by the sheet glass 108 flows from the air discharge holes 104 to the air discharge holes 104 as shown by arrows c.
.. → opening 107a... → discharge pipe 107.

FIG. 20 is a sectional view taken along the line GG of FIG.
By rotating the handle of the air discharge amount adjusting means 105 (shown in FIG. 18), the discharge pipe 107 is rotated.
Are arranged at predetermined positions of the air discharge holes 104. The openings 107a of the central portion E1 are relatively shifted from the air discharge holes 104, and the openings 107a of the side portions E2 and E2 are completely aligned with the air discharge holes 104.

For this reason, the discharge amount of the air discharge holes 104 in the range of the central portion E1 becomes small as shown by the arrow d.
In the range of both side portions E2 and E2, the discharge amount of the air discharge holes 104 is large as shown by a white arrow e. Accordingly, the air pressure received at the center of the glass sheet 108 can be increased, and the air pressure received on both sides of the glass sheet 108 can be reduced. As a result, the sheet glass 108 can be bent into a curved shape different from the curved upper surface 101. That is, by attaching the air discharge amount adjusting means 105, for example, when the bent shape of the sheet glass 108 changes due to a model change of an automobile, the air discharge amount adjusting means 105 is adjusted so that the sheet glass is adjusted to the new bent shape. 108 can be bent.

[0007]

The above-described apparatus for bending a glass sheet does not press the glass sheet 108 against a molding die to forcibly bend the glass sheet, but instead applies the glass sheet 108 in a state of being floated by heated air. It is formed by bending only with its own weight of 108. Therefore, unless the air pressure distribution of the heated air for floating the glass sheet 108 is set with high accuracy, it is difficult to bend the glass sheet 108 to a prescribed shape. For this reason, when changing the bending shape of the sheet glass 108, it is necessary to repeat the test many times to find the optimum air pressure distribution in order to obtain the optimum bending shape.

However, the air discharge amount adjusting means 105 is provided for each discharge pipe 10 for adjusting the discharge amount of the air discharge holes 104.
7 are mounted inside the transport bed 100, so that the setting state of the discharge amount in each of the air discharge holes 104 cannot be visually determined from the outside. For this reason, since the operator sets the air pressure distribution on the curved upper surface 101 depending on intuition, a large amount of test time is required to obtain the optimum air pressure distribution. Further, since the worker sets the air pressure distribution on the curved upper surface 101 depending on intuition, the burden on the worker is large.

Further, the air discharge amount adjusting means 105 rotates one discharge pipe discharge pipe 107 so as to rotate the transfer bed 10.
Since the discharge amounts of the plurality of air discharge holes 104 arranged in a line from one side to the other side of the hole 0 are simultaneously adjusted, for example, the discharge amounts of the air discharge holes 104 arranged in a line are individually finely adjusted. Difficult to do. For this reason, there is a possibility that the discharge amounts of the air discharge holes 104 arranged in a line cannot be set optimally.

Therefore, an object of the present invention is to provide a technique capable of reducing the burden on the operator when adjusting the air pressure distribution of the transport bed, and finely adjusting the air discharge holes individually. Is to do.

[0011]

In order to solve the above-mentioned problems, a first aspect of the present invention is to provide a plurality of flow path adjusting members for adjusting a flow path cross-sectional area by closing a part of a flow path, In a bed structure in which a flow rate adjusting member is inserted from above into an air hole of a bed provided with a large number of air holes on the upper surface for floating plate glass by air pressure, the flow rate adjusting member is distinguished when viewed from above As shown in the figure, an identification means that can be distinguished for each type is provided.

[0012] Since the flow rate adjusting member is provided with identification means capable of being distinguished for each type so as to be distinguished when viewed from above,
The type of the flow rate adjusting member inserted into the air hole can be easily distinguished visually. For this reason, since the arrangement information of the flow rate adjustment member can be easily obtained, by setting the air pressure distribution based on the arrangement information of the flow rate adjustment member, it is possible to set the optimum air pressure distribution without taking much time. Can be. Further, by setting the air pressure distribution based on the arrangement information of the flow rate adjusting member, it is not necessary to set the air pressure distribution depending on the intuition of the operator, and the burden on the operator can be greatly reduced.

Further, since the flow rate adjusting members are individually inserted into the respective air holes, the flow rates of the respective air holes can be adjusted independently. For this reason, since the air pressure distribution can be finely adjusted, it can be set to an optimal state according to the shape and the bent shape of the sheet glass.

According to a second aspect of the present invention, the identification means has a different shape for each type of flow rate adjusting member. By making the shape different for each type of flow rate adjustment member,
The flow regulating members can be distinguished. As described above, since the shape of the flow rate adjusting member can be used as identification means, the cost of the flow rate adjusting member can be reduced.

According to a third aspect of the present invention, the identification means is a mark, a color, or a material having a difference for each type of the flow rate adjusting member. The flow control members can be distinguished only by marking the flow control members. Therefore, since the identification means can be easily attached to the flow rate adjusting member, the cost of the flow rate adjusting member can be reduced. Further, the flow rate adjusting members can be distinguished only by color-coding the flow rate adjusting members. Therefore, since the identification means can be easily attached to the flow rate adjusting member, the cost of the flow rate adjusting member can be reduced. Furthermore, the flow control members can be distinguished only by changing the material of the flow control members. Therefore, since the identification means can be easily attached to the flow rate adjusting member, the cost of the flow rate adjusting member can be reduced.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a perspective view of a plate glass floating bed structure (first embodiment) according to the present invention. The sheet glass floating bed structure 10 includes a transfer bed 12 as a bed for transferring the sheet glass, a curved upper surface 14 formed on the upper surface of the transfer bed 12, an air ejection hole 18 opened on the curved upper surface 14,.
And air discharge holes 20 as air holes, and air discharge holes 2
And a plurality of types of flow path adjusting members 30 for adjusting the flow path cross-sectional area by closing a part (upper end) 20a of the flow path 0. The flow path adjusting member 30 has a circular cross section as an example,
The specific shape will be described with reference to FIGS.

A plurality of sheet glass floating bed structures 10 are arranged in a heating furnace (not shown) in a state of being arranged in series as indicated by imaginary lines to constitute a sheet glass bending apparatus.
By raising the sheet glass being conveyed by the sheet glass floating bed structure 10 to the softening temperature in the heating furnace, the sheet glass can be bent into a curved shape by its own weight. Air injection channel 1
Numeral 8 is a member that penetrates from the curved upper surface 14 to the lower surface 15 of the transport bed 12 and connects the lower surface 15 to air supply means (not shown). The heated air supplied from the air supply means can be jetted from the air jet channel 18 onto the curved upper surface 14.

The air discharge hole 20 has an upper end 20a opened to the curved upper surface 14 of the transport bed 14 and a lower end 20b opened to the collective discharge hole 26. By forming a large-diameter insertion hole 22 at the upper end 20a, the flow path adjusting member 3 is inserted into the insertion hole 22.
0 can be inserted from above the curved upper surface 14.

The collective discharge hole 26 is a hole penetrating from the left side portion 16 to the right side portion 17 of the transport bed 12 and
Air suction means (not shown) is connected to the openings 6 and 17. By operating the air suction means, the air heating on the curved upper surface 14 side of the transport bed 12 is controlled by the flow path adjusting member 30.
... → air discharge holes 20.

FIG. 2 is a sectional view taken along the line AA of FIG. 1, and a flow path adjusting member 30 is inserted into the insertion hole 22 of each air discharge hole 20.
… Is shown. As an example, a state is shown in which the flow path adjusting members 30 having a circular cross section are inserted into the insertion holes 22. However, by providing a difference in the cross-sectional shape for each type of the flow path adjusting members 30, the air discharge holes are formed. 20 can be adjusted.

FIG. 3 is an enlarged view of a portion B in FIG. 2 and shows a state where the flow path adjusting member 30 is inserted into the insertion hole 22 of the air discharge hole 20. The insertion hole 22 has a hole diameter d1 larger than the hole diameter d2 of the air discharge hole 20 and a hole depth t1 equal to the hole diameter d1 (t1).
= D1). In addition, the flow path adjusting member 3
In the case of 0, the outer diameter d3 is set slightly smaller than the hole diameter d1, and the height h1 is set slightly smaller than the hole depth t1.

By making the hole diameter d1 of the insertion hole 22 larger than the hole diameter d2 and forming the tapered step portion 23, the step portion 23 is formed.
The flow path adjusting member 30 can be mounted on the insertion hole 22 by placing the flow path adjusting member 30 on the upper end 23a of the second member. Further, since the height h1 of the flow path adjusting member 30 is set slightly smaller than the hole depth t1 of the insertion hole 22, there is no fear that the flow path adjusting member 30 projects from the curved upper surface 14 of the transport bed 12. In the drawings, the hole diameter d1 and the outer diameter d are used to facilitate understanding.
Although a relatively large gap is provided between the gap 3 and the gap 3, in practice, the gap may be almost eliminated.

FIGS. 4 (a) to 4 (j) are plan views of the flow path adjusting members constituting the plate glass floating bed structure (first embodiment) according to the present invention. This is shown as a first flow path adjusting member 30a to a tenth flow path adjusting member 30j. The first to tenth flow path adjusting members 30a to 30j are shaped (identifying means) for each type so as to be distinguished when viewed from above.
(Shown in FIG. 1), and the discharge capacity of each of the air discharge holes 20...

First to tenth flow path adjusting members 30a to 30j
Is a member made of, for example, metal or ceramics, and is formed of a heat-resistant material having heat resistance higher than a maximum set temperature of a heating furnace in order to prevent temperature deterioration. However, considering the ease of replacing the first to tenth flow path adjusting members 30a to 30j, the first to tenth flow path adjusting members 30a to 30j are considered.
a to 30j may be formed of a magnetic material (for example, steel). The first to tenth flow path adjusting members 30a to 30j can be easily taken out from the insertion holes 22 by attracting them with magnets (magnets). The first to tenth flow path adjusting members 30a to 30j are preferably made of a material that does not adhere to the fused silica so that it can be easily replaced in a cold state. Fused silica is SiO ₂ and is a main component of glass.

Hereinafter, the first to tenth flow path adjusting members 30a to 30a
The cross-sectional shape of 30j will be described. Here, the cross-sectional area of the insertion hole 22 is S, the cross-sectional area of each of the first to tenth flow path adjusting members 30a to 30j is Sa to Sj, and the discharge capacity of the air discharge hole is S.
If S1 to S10, S1 to S10 = [(Sa to Sj)
/ S] × 100%. Thus, for example, S
When it is 1, S1 = Sa / S × 100%.

(A): The first flow path adjusting member 30a is formed in an I-shaped cross section, and the opening cross section of the insertion hole 22 (discharge capacity) S
The sectional area Sa is set so that 1 = 90%. (B): The second flow path adjusting member 30b is formed in an inverted V-shaped cross section, and the opening cross section (discharge capacity) S2 of the insertion hole 22 is 80%.
The cross-sectional area Sb is set so that

(C): The third flow path adjusting member 30c is formed in a C-shaped cross section, and the opening cross section of the insertion hole 22 (discharge capacity) S
The cross-sectional area Sc is set so that 3 = 70%. (D); The fourth flow path adjusting member 30d is formed in a right-angled triangular cross section, and the opening cross section of the insertion hole 22 (discharge capacity) S4 = 6.
The sectional area Sd is set so as to be 0%.

(E): The fifth flow path adjusting member 30e is formed in a cross-shaped cross section, and the opening cross section of the insertion hole 22 (discharge capacity)
The sectional area Se is set so that S5 = 50%. (F): The sixth flow path adjusting member 30f is formed in an N-shaped cross section, and the opening cross section of the insertion hole 22 (discharge capacity) S6 = 40%
The cross-sectional area Sf is set so that

(G): The seventh flow path adjusting member 30g is formed in a regular triangular cross section, and the cross sectional area Sg is set so that the opening cross section (discharge capacity) S7 of the insertion hole 22 is 30%. Things. (H): The eighth flow path adjusting member 30h is formed in a square shape in cross section, and the opening cross section (discharge capacity) of the insertion hole 22 is S8 = 2.
The sectional area Sh is set so as to be 0%.

(I) The ninth flow path adjusting member 30i is formed in an annular cross section, and the opening cross section of the insertion hole 22 (discharge capacity)
The cross-sectional area Si is set so that S9 = 10%. d is the hole diameter. (J): The tenth flow path adjusting member 30j is formed in a circular cross section, and the opening cross section (discharge capacity) of the insertion hole 22 (S10 = 0).
% Is set as the cross-sectional area Sj.

As described above, the first to tenth flow path adjusting members 3
By preparing 0a to 30j, the discharge capacity of the air discharge holes can be adjusted to 10 levels of 0% to 100%. However, 100% of the discharge capacity of the air discharge hole means a state in which the flow path adjusting member is not used. Hereinafter, an example in which the air pressure is set using several types of flow path adjusting members among the first to tenth flow path adjusting members 30a to 30j of the flow path adjusting member 30 will be described.

FIG. 5 is a plan view of the plate glass floating bed structure (first embodiment) according to the present invention, and shows several types of flow path adjusting members 30a, 30a, 30a to 30j among the first to tenth flow path adjusting members 30a to 30j. The example which set air pressure using 30d and 30i is shown. That is, the ninth flow path adjusting members 30i are inserted into the insertion holes 22 in the central area E1 of the transport bed 12,
The fourth flow path adjusting members 30d are inserted into the insertion holes 22 of the intermediate regions E2, 3, and the insertion holes 22 of the side regions E4, 5 are inserted.
Shows a state where the first flow path adjusting members 30a are inserted.

The insertion hole 22 in the range of the central region E1
Are as small as S9 = 10%, and the intermediate region E2
The opening ratio of the insertion holes 22 in the range of 3 is S4 = 60%
Is relatively large, and the opening ratio of the insertion holes 22 in the range of the side regions E4 and 5 is sufficiently large as S1 = 90%.
The flow rate adjusting members 30a, 30 are individually
By inserting d and 30i, each air discharge hole 20 ...
The emissions (shown in FIG. 1) can be adjusted independently and independently. For this reason, it is possible to finely adjust the air pressure distribution of the air pressure for floating the sheet glass, and to bend the sheet glass to an optimum state according to the bent shape of the sheet glass.

The flow rate adjusting member 30 has a shape different from that of the flow rate adjusting members 30a, 30d, 30i, so that the flow rate adjusting members 30a, 30d inserted into the air discharge holes 20 (shown in FIG. 1). , 30i can be distinguished only by looking from above. Therefore, the flow rate adjusting members 30a, 30
Since it is possible to easily obtain the placement information of d and 30i,
The air pressure distribution can be relatively easily set to the optimum state.

FIGS. 6 (a) and 6 (b) are illustrations for explaining the adjustment of the air discharge amount of the plate glass floating bed structure (first embodiment) according to the present invention. FIG. 6 (a) shows the adjustment of the hole diameter (D1 to D3). The flow path adjusting member having a changed size is shown as a “comparative example”, and FIG. 4B shows the flow path adjusting member of the first embodiment described with reference to FIGS. 4A to 4J as an “example”. .

In (a), the upper insertion holes 22, 22
The first flow path adjusting members 40, 40 having the hole diameter D1 are inserted into the second insertion holes 22, 22, and the second flow path adjusting members 4 having the hole diameter D2 are inserted into the middle insertion holes 22, 22.
1, 41, and the hole diameter D3 is inserted into the lower insertion holes 22, 22.
3 shows a state in which the third flow path adjusting members 42 are inserted.
The hole diameter of the first to third flow rate adjusting members 40 to 42 is set to D1> D2
By setting> D3, the air discharge amount of the insertion holes 22 and 22 is adjusted. Normally, when adjusting the discharge amount of the flow path, a flow rate adjustment member having a different hole diameter such as the first to third flow path adjustment members 40 to 42 is prepared and the discharge amount is adjusted. However, since the first to third flow path adjusting members 40 to 42 have similar cross-sectional shapes, it is difficult to easily distinguish them only by visual observation.

Therefore, when adjusting the air pressure distribution, it is necessary for an operator to determine the arrangement position of the first to third flow rate adjusting members 40 to 42 depending on intuition. Requires a lot of test time. Further, since the operator sets the air pressure distribution depending on intuition, the burden on the operator is large.

In (b), the upper insertion holes 22, 22
The first flow path adjustment members 30a, 30a are inserted into the first and second flow path adjustment members 30d, the fourth flow path adjustment members 30d, 30d are inserted into the middle insertion holes 22, 22, and the ninth flow path adjustment member 30 is inserted into the lower insertion holes 22, 22.
i, 30i are inserted. The first, fourth, and ninth flow rate adjusting members 30a, 30d, and 30i are different in shape for each type, so that the first, fourth, and ninth flow rate adjusting members 30a, 30d, and 30i are inserted into the air holes.
The types of the flow rate adjusting members 30a, 30d, and 30i can be distinguished only by looking from above.

Therefore, the arrangement information of the first, fourth, and ninth flow rate adjusting members 30a, 30d, and 30i can be easily obtained. As a result, the air pressure distribution can be set based on the arrangement information of the first, fourth, and ninth flow rate adjusting members 30a, 30d, and 30i, so that the optimum air pressure distribution is set without taking time. be able to. Further, since the air pressure distribution can be set based on the arrangement information of the first, fourth, and ninth flow rate adjusting members 30a, 30d, 30i,
It is not necessary to set the air pressure distribution depending on the operator's intuition.
As a result, the burden on the operator can be greatly reduced. Hereinafter, the first, fourth, and ninth flow rate adjusting members 30a, 3
Transport bed 12 set to desired air pressure at 0d, 30i
An example in which the sheet glass 35 is bent by using the following will be described.

FIGS. 7 (a) and 7 (b) are views for explaining a first operation of the plate glass floating bed structure (first embodiment) according to the present invention, and FIG. 7 (b) is a sectional view taken along the line bb of FIG. 7 (a). The figure is shown. (A)
, A plurality of transport beds 12 are arranged in series, and heated air is blown out from the curved upper surfaces 14 of the transport beds 12 as shown by arrows to place the sheet glass 35 on the transport bed 12.

In (b), the heating air jetted onto the curved upper surface 14 from the air jetting channel 18 is applied to the lower surface 35a of the plate glass 35, and the heated air turned back on the lower surface 35a is applied to the channel adjusting members 30i. 20 ... → collection discharge hole 26
Discharge through…. At this time, the lower surface 3 of the plate glass 35
Air pressure is generated on the 5a side to cause the sheet glass 35 to bend the curved upper surface 14.
Surface. In this state, the plate glass 35 is transferred into a heating furnace (not shown) along the curved upper surface 14 of the transfer beds 12 as indicated by the white arrows.

FIG. 8 is an explanatory view of a second operation of the plate glass floating bed structure (first embodiment) according to the present invention.
FIG. In the range of the central region E1,
Since the opening ratio of the insertion holes 22 is reduced to S9 = 10%, the discharge amount of the heated air becomes small and the air pressure is relatively high. In the range of the intermediate portion areas E2 and E3, the insertion holes 22.
Is set at an intermediate value of S4 = 60%, the discharge amount of the heated air is relatively large, and the air pressure is relatively low. In the range of the side regions E4 and 5, the opening ratio of the insertion holes 22 is S.
Since 1 = 90%, which is sufficiently large, the discharge amount of the heated air is large, and the air pressure is lower than that of the intermediate region E2,3.

Accordingly, the central portion of the plate glass 35 floats high from the curved upper surface 14 to the flying height H1, and both side portions of the plate glass 35 floats low to the floating height H2 from the curved upper surface 14. By raising the sheet glass 35 to the softening temperature in the heating furnace, the sheet glass 35 is bent into a curved shape deeper than the curved shape of the curved upper surface 14. This bending is bending in the width direction of the sheet glass 35, and is hereinafter referred to as “single R bending”.

Next, a modification of the first embodiment will be described. FIG. 9 is a third operation explanatory view of the plate glass floating bed structure (first embodiment) according to the present invention, and shows a modification. In the range of the central region E1, the opening ratio of the insertion holes 22 is S1 =
Since the heating air is increased to 90%, a large amount of heated air is discharged and the air pressure is reduced. In the range of the intermediate region E2, the opening ratio of the insertion holes 22 is set at S4 = 60%, which is intermediate.
The discharge amount of the heated air is relatively large and the air pressure is relatively low. In the range of the side region E4, the opening ratio of the insertion holes 22 is reduced to S9 = 10%, so that the discharge amount of the heated air is reduced and the air pressure is increased. Therefore, the glass sheet 3
The center part of 5 is floated relatively low from the curved upper surface 14 to H3, and the side part of the plate glass 35 is floated relatively high from the curved upper surface 14 to H4. As a result, the sheet glass 35 can be bent into a curved shape different from the curved upper surface 14.

FIGS. 10 (a) and 10 (b) are views for explaining a fourth operation of the plate glass floating bed structure (first embodiment) according to the present invention. (A), the central area 1 of the curved upper surface 14
By inserting the ninth flow path adjusting members 30i into the insertion holes 22 of 4a (shown in FIG. 1), the discharge amount of the heated air in the central area 14a is reduced and the air pressure is set high. The first flow path adjusting members 30a (not shown) are inserted into the insertion holes 22 in the peripheral area 14b around the central area 14a. The discharge amount of the heated air in the surrounding area 14b is increased and the air pressure is set low. The sheet glass 35 is heated to a softening temperature in a heating furnace (not shown) while the sheet glass 35 is floated for a predetermined time on the curved upper surface 14 thus set.

In (b), the plate glass 35 is
As a, the rear side 37b, the left side 37c, and the right side 37d hang down, the center 38 becomes a protruding convex shape. For this reason,
In the plate glass 35, the length Lc1 of the central bus 38a is longer than the length Lp1 of the left and right sides 37c and 37d, and Lc1> L.
The relationship of p1 holds.

FIGS. 11 (a) and 11 (b) are views for explaining the fifth operation of the plate glass floating bed structure (first embodiment) according to the present invention, and FIG. 11 (a) shows the plate glass described in FIG. An example in which "dimensional bending" is formed is shown as "Example", and (b) shows an example in which sheet glass described in the section of the prior art is "two-dimensionally bent" is shown as "Comparative Example". Reference numeral 48 denotes a heating furnace. The “two-dimensional bending” will be described later.

In (a), the plate glass 35 of the transport bed 12a has a length Lc1 of the center bus 38a and right and left sides 37a.
The length Lp1 of c and 37d is Lc1> Lp1. In this state, the plate glass 35 is conveyed as indicated by a white arrow and floated on the conveyance beds 12b and 12c. Flat glass 35
Tries to warp upward, but the sheet glass 35 is Lc1> Lp
Since the relationship 1 is established, the plate glass 35 is unlikely to warp upward. Therefore, the extension of the right and left sides 37c and 37d is reduced by △
L1 can be kept small so that the glass sheet 35 does not warp upward. Therefore, a relationship of Lc1 ≧ Lp1 + △ L1 is established.

In this state, the plate glass 35 is conveyed as indicated by a white arrow and floated on the conveying beds 12c and 12d. The sheet glass 35 is reliably bent along the transport beds 12c and 12d, and the sheet glass 35 can be reliably bent in the longitudinal direction of the sheet glass 35 in addition to the "single R bending". The bending of the sheet glass 35 with different bending radii (R) in the width direction and the longitudinal direction is hereinafter referred to as “two-dimensional bending”. Therefore, according to the present invention, the sheet glass 35
Can be easily "two-dimensionally bent", so that the operation rate of the apparatus can be increased and the productivity can be further increased.

In (b), the length Lc2 of the central busbar 108a and the length Lp2 of the right side 108b of the plate glass 108 of the transport bed 100a are Lc2 = Lp2. In this state, the plate glass 108 is conveyed as indicated by a white arrow and floated on the conveyance beds 100b and 100c. Right side 10
8b extends relatively greatly to ΔL2, and the plate glass 108 warps upward, forming a so-called saddle bag shape. Therefore,
The relationship Lc2 <Lp2 + △ L2 holds.

In this state, the plate glass 108 is conveyed as indicated by a white arrow and floated on the conveyance beds 100c and 100d. Here, in order to bend the saddle bag-shaped plate glass 108 along the transport beds 100c and 100d, it is necessary to contract the extension ΔL2 of the right side 108b. However, since the sheet glass 108 is bent only by its own weight, the elongation ΔL2 of the right side 108b may not be sufficiently absorbed. Therefore, even if a relatively large distance L is generated between the sheet glass 108 and the transport bed 100d, the sheet glass 108 may not be able to be "two-dimensionally bent" along the transport bed 100d.

Hereinafter, an example of adjusting the arrangement pattern of the flow rate adjusting members of the plate glass floating bed structure 10 will be described. FIGS. 12A to 12C are first explanatory views of the arrangement pattern of the flow rate adjusting members of the plate glass floating bed structure (first embodiment) according to the present invention. The cross-sectional shape of each of the first flow path adjusting member 30a, the third flow path adjusting member 30c, the sixth flow path adjusting member 30f, and the ninth flow path adjusting member 30i is shown in FIG.
(A), (c), (f) and (i) are shown. (A) shows a ninth flow path adjusting member 30i in an inner region (center and front end) E10 obtained by dividing the curved upper surface 14 by a partition line (imaginary line) 45.
Are arranged, and the first flow path adjusting members 30a are arranged in the outer region (left and right ends and rear end) E11.

(B) shows an inner left region (center and front end) E1 in which the curved upper surface 14 is partitioned by a partition line (imaginary line) 46.
, A ninth flow path adjusting member 30i in the inner middle region (center and front end) E13, and a third flow adjusting member 30i in the inner right region (center and front end) E14. The state in which the road adjustment members 30c are arranged and the first flow path adjustment members 30a are arranged in the outer region (left and right ends and rear end) E15 is shown.

(C), the ninth flow path adjusting members 30i are arranged at the center of the curved upper surface 14, the sixth flow path adjusting members 30f are arranged on the left and right sides thereof, and the first flow path adjusting members 30f are arranged in other regions. The state in which the adjusting members 30a are arranged is shown. As shown in (a) to (c), since the flow rate adjusting members 30a to 30j are individually inserted into the respective air discharge holes 20 (shown in FIG. 1), the respective air discharge holes 20 are formed. The flow rates can be adjusted independently and independently. For this reason, since the air pressure distribution can be finely adjusted, it can be set to an optimal state in accordance with the shape and bending shape of the plate glass 35 (shown in FIG. 7A).

FIGS. 13 (a) and 13 (b) are second explanatory views of the arrangement pattern of the flow rate adjusting member of the plate glass floating bed structure (first embodiment) according to the present invention. (A) shows an example in which the flow rate adjusting members 30 are arranged only in the central region E16 of the curved upper surface 14. Since there is no need to dispose the flow rate adjusting members 30 over the entire curved upper surface 14, the flow rate adjusting members 3
It is possible to save trouble when exchanging 0... (B)
Shows an example in which the flow rate adjusting members 30 are arranged only in the region E17 in the substantially right half of the curved upper surface 14. (A)
According to (b), the flow rate adjusting member 3 is formed over the entire curved upper surface 14.
Since there is no need to dispose 0..., It is possible to save labor for replacing the flow rate adjusting members 30.

Hereinafter, a second embodiment and a third embodiment of the plate glass floating bed structure will be described. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. FIG. 14 is an enlarged view of a main part of a plate glass floating bed structure (second embodiment) according to the present invention. The sheet glass floating bed structure 50 has a transfer bed 51 as a bed for transferring the sheet glass 35 (shown in FIG. 7A), a curved upper surface 52 formed on the upper surface of the transfer bed 51, and an opening on the curved upper surface 52. Air outlets 18 (shown in FIG. 1) and air discharge holes 53 (only one is shown) as air holes, and a plurality of air discharge holes 53 that adjust the flow path cross-sectional area by closing a part of the air discharge holes 53 (Only one is shown).

The air discharge hole 53 is a hole formed to have a hole diameter d5 into which the flow path adjusting members 56 can be inserted. The enlarged diameter portion 54 at the upper end is opened to the curved upper surface 52 and the lower end is set to the collective discharge hole 2.
It is connected to 6. In the enlarged diameter portion 54, the hole diameter d6 is set to be larger than the hole diameter d5, and the hole depth is set to t2.

The flow path adjusting member 56 has an upper end 58 and a curved upper surface 52 with the lower end 57 placed on the peripheral wall of the collecting discharge hole 26.
G1 (G1 ≧ 0) is generated between
Is set to have a height h2 so as to protrude halfway through the enlarged diameter portion 54. By generating the gap G <b> 1, there is no concern that the flow path adjusting member 56 protrudes from the curved upper surface 52. In addition, by projecting the upper end 58 halfway through the enlarged diameter portion 54, the flow path adjusting member 56 can be easily inserted into the air discharge hole 53 and can be easily extracted from the air discharge hole 53.

Although the flow path adjusting member 56 has been described as a member having a square cross-section, the flow path adjusting member 56 may have other cross-sectional shapes, for example, a first
The flow path adjusting member 30a shown in FIGS. 4A to 4J of the embodiment.
It is possible to prepare members having a cross-sectional shape of 〜30j. As a result, the flow path adjusting member 56 can be arranged on the curved upper surface 52 in the same pattern as in the first embodiment.

FIG. 15 is a view taken in the direction of arrow D in FIG. 14 and shows a state where the four corners of the flow path adjusting members 56 are brought into contact with the peripheral wall of the air discharge hole 53 and inserted into the air discharge hole 53. By bringing the four corners of the flow path adjustment member 56 into contact with the peripheral wall of the air discharge hole 53, the flow path adjustment members 56 can be arranged in the air discharge hole 53 in a stable state.

According to the second embodiment, by individually inserting the flow rate adjusting members 56 into the air discharge holes 53, the discharge amount of each air discharge hole 53 can be adjusted independently. For this reason, it is possible to finely adjust the air pressure distribution of the air pressure for floating the sheet glass, and to bend the sheet glass to an optimum state according to the bent shape of the sheet glass.

Further, the flow rate adjusting member 56 can be distinguished only by looking at the type of the flow rate adjusting member 56 inserted into the air discharge hole 53 due to the difference in the shape of the flow rate adjusting member 56. it can. Therefore, since the arrangement information of the flow rate adjusting member 56 can be easily obtained, the air pressure distribution can be relatively easily set to the optimum state. Further, by projecting the flow rate adjusting member 56 into the large-diameter enlarged portion 54, the flow path adjusting member 56 can be replaced relatively easily. As a result, the air pressure distribution can be set without spending much time, and the burden on the operator can be significantly reduced.

FIG. 16 is an enlarged view of a main part of a plate glass floating bed structure (third embodiment) according to the present invention. The sheet glass floating bed structure 60 includes a transfer bed 61 as a bed for transferring the sheet glass, a curved upper surface 62 formed on the upper surface of the transfer bed 61, and the air ejection holes 18 opened in the curved upper surface 62 (shown in FIG. 1). ) And air discharge holes 63 (only one is shown) as air holes, and a plurality of types of flow path adjusting members 66 (1) that adjust the flow path cross-sectional area by closing a part of the air discharge holes 63. Are shown only).

The air discharge hole 63 is a hole formed to have a hole diameter d7 into which the lower rod 67 of the flow path adjusting member 66 can be inserted. The enlarged diameter portion 64 at the upper end is opened to the curved upper surface 62 and the lower end is gathered. It is connected to the discharge hole 26. Expanded portion 64
Sets the hole diameter d8 to be larger than the hole diameter d7 and sets the hole depth to t.
3 is set.

The flow path adjusting member 66 is a member formed in a columnar shape as a whole, and has an inverted truncated cone-shaped seat portion 68 formed at the upper end and a projection 68a formed on the lower tapered surface of the seat portion 68. ,
A knob 69 is provided at the upper end of the seat 68. The flow path adjusting member 66 is prepared by preparing a plurality of types having different heights of the projections 68a.
Can be arbitrarily adjusted. As a result,
Similarly to the first and second embodiments, the air pressure on the curved upper surface 62 can be adjusted by adjusting the air discharge amount.

The knob 69 has a gap G with the curved upper surface 52.
The height h3 is set so that 2 ≧ 0. Therefore, the knob 69 of the flow path adjusting member 56 is
There is no worry about protruding from. Note that the knob 69 is formed in a relatively thin shape so that it can be easily gripped, and furthermore, by disposing the knob 69 on the enlarged-diameter portion 64, the knob 69 can be easily gripped. As a result, the flow path adjusting member 66 can be easily inserted into the air discharge hole 63 and can be easily extracted from the air discharge hole 63.

FIG. 17 is a view taken in the direction of arrow E in FIG. 16 and shows a state in which the flow path adjusting members 66 are inserted into the air discharge holes 63.
Since three projections 68a are formed on the lower tapered surface of the seat portion 68 of the flow path adjusting member 66, the three projections 68a are mounted on the upper end 63a of the air discharge hole 63 (see also FIG. 16). In addition, the flow path adjusting member 66 can be stably arranged concentrically with the air discharge hole 63.

According to the third embodiment, by separately inserting the flow rate adjusting members 66 into the air discharge holes 63, the discharge amount of each air discharge hole 63 can be adjusted independently. For this reason, it is possible to finely adjust the air pressure distribution of the air pressure for floating the sheet glass, and to bend the sheet glass to an optimum state according to the bent shape of the sheet glass. Further, by protruding the knob 69 from the large-diameter enlarged portion 64, the flow path adjusting member 66 can be replaced relatively easily. As a result, the air pressure distribution can be set without spending much time, and the burden on the operator can be significantly reduced.

Also, for example, a mark 70 (for example, “△”) as identification means is provided on the surface of the seat 68,
The flow path adjusting member 66 can be distinguished. Mark 70
Includes engraving. Instead of the mark, the flow path adjustment member 68 may be distinguished by coloring the flow path adjustment member 68 or changing the material of the flow path adjustment member 68. The flow control member 66 can be distinguished only by making a mark 70 on the flow control member 66. Therefore, since the identification means can be easily attached to the flow rate adjusting member 66, the cost of the flow rate adjusting member 66 can be reduced.

The flow rate adjusting members 66 may be distinguished only by color-coding the flow rate adjusting members 66. Since the identification means can be easily attached to the flow rate adjusting member 66, the cost of the flow rate adjusting member 66 can be reduced. further,
The flow rate adjusting members 66 may be distinguished only by changing the material of the flow rate adjusting members 66. Since the identification means can be easily attached to the flow rate adjusting member 66, the cost of the flow rate adjusting member 66 can be reduced.

In the above embodiment, the example in which the flow path adjusting member 30 is disposed on the transport bed 12 has been described.
For example, the air discharge amount adjusting means 1 described in the section of the prior art.
05 can be used together. By using the flow path adjusting member 30 together with the air discharge amount adjusting means 105, the air discharge amount is roughly adjusted in advance by the air discharge amount adjusting means 105,
Thereafter, the air discharge amount can be finely adjusted by the flow path adjusting member 30. That is, the flow path adjusting member 3 according to the present invention
0 is the air discharge amount adjusting means 10 described in the section of the prior art.
It is also possible to use it as a member for complementing and reinforcing 5. As a result, the air pressure distribution can be set without spending much time, and the burden on the operator can be significantly reduced.

In the first embodiment, an example has been described in which the first to tenth flow path adjusting members 30a to 30j are inserted into the insertion holes 22 to adjust the air discharging capability of the air discharging holes 20. As the shape of the other flow path adjusting members, for example, preparing a plurality of cylindrical flow path adjusting members having different diameters,
By inserting these flow path adjusting members into the insertion holes 22, it is also possible to adjust the air discharge capacity of the air discharge holes 20. In this case, in order to distinguish each of the flow path adjusting members, it is preferable to attach an identification mark (including an engraved mark) to the top of each of the flow path adjusting members. Further, instead of the mark, each flow path adjusting member may be distinguished by coloring each flow path adjusting member or changing the material of each flow path adjusting member. The example in which a plurality of columnar flow path adjusting members having different diameters are prepared and these flow path adjusting members are inserted into the insertion holes is applied to the flow path adjusting member 56 of the second embodiment. Can also.

Further, in the second embodiment, the flow path adjusting member 5
Although the enlarged diameter portion 54 is formed in order to make it easier to remove the air outlet hole 6 from the air discharge hole 53, the passage adjusting member 56 is formed of a magnetic material so that the air discharge hole 53 can be formed without forming the enlarged diameter portion 54. Can be easily extracted from That is, the flow path adjusting member 56 can be easily extracted from the air discharge hole 53 by attracting the flow path adjusting member 56 with the magnet. Since the step of processing the enlarged diameter portion 54 on the transport bed 51 can be omitted, the equipment cost can be reduced.

In the third embodiment, the flow rate adjusting member 66
Was changed to “”, but in addition,
"O", "X", alphabet "A, B ...", etc. may be used.

[0075]

According to the present invention, the following effects are exhibited by the above configuration. According to a first aspect of the present invention, the flow rate adjusting member is provided with an identification means capable of being distinguished for each type so as to be distinguished when viewed from above, and inserted into the air hole of the bed from above. For this reason, the type of the flow rate adjusting member inserted into the air hole can be easily visually distinguished, so that the arrangement information of the flow rate adjusting member can be easily obtained. As a result, the air pressure distribution can be set based on the arrangement information of the flow rate adjusting members, so that the optimum air pressure distribution can be set without taking much time.

Further, since the air pressure distribution can be set based on the arrangement information of the flow rate adjusting member, it is not necessary to set the air pressure distribution depending on the intuition of the operator. As a result, the burden on the operator can be greatly reduced.

Further, since the flow rate adjusting members are individually inserted into the respective air holes, the flow rates of the respective air holes can be adjusted independently. For this reason, since the air pressure distribution can be finely adjusted, it can be set to an optimal state according to the shape and the bent shape of the sheet glass. As a result, it is possible to relatively easily bend the glass sheet into an optimum shape.

According to the second aspect, the flow rate adjusting member can be distinguished by giving a difference in shape for each type of the flow rate adjusting member. As described above, since the shape of the flow rate adjusting member can be used as identification means, the cost of the flow rate adjusting member can be reduced.

According to a third aspect of the present invention, the identification means is a mark, a color, or a material having a difference for each type of the flow rate adjusting member. For this reason, the flow rate adjusting members can be distinguished only by marking the flow rate adjusting members. Therefore, since the identification means can be easily attached to the flow rate adjusting member, the cost of the flow rate adjusting member can be reduced. Further, the flow rate adjusting members can be distinguished only by color-coding the flow rate adjusting members. Therefore, since the identification means can be easily attached to the flow rate adjusting member, the cost of the flow rate adjusting member can be reduced. Furthermore, just by changing the material of the flow rate adjustment member,
The flow regulating members can be distinguished. Therefore, since the identification means can be easily attached to the flow rate adjusting member, the cost of the flow rate adjusting member can be reduced.

[Brief description of the drawings]

FIG. 1 is a bed structure for floating a glass sheet according to the present invention (first embodiment)
Example) perspective view

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is an enlarged view of a portion B in FIG. 2;

FIG. 4 is a flat glass floating bed structure according to the present invention (first embodiment);
FIG. 4 is a plan view of a flow path adjusting member constituting the embodiment).

FIG. 5 is a flat glass floating bed structure according to the present invention (first embodiment).
Example) plan view

FIG. 6 is a bed structure for floating a glass sheet according to the present invention (first embodiment)
FIG. 5 is an explanatory diagram of adjustment of an air discharge amount according to the embodiment).

FIG. 7 is a flat glass floating bed structure according to the present invention (first embodiment).
(First Embodiment)

FIG. 8 is a flat glass floating bed structure according to the present invention (first embodiment).
(Example of operation)

FIG. 9 shows a flat glass floating bed structure according to the present invention (first embodiment).
(Example) 3rd action explanatory drawing

FIG. 10 is an explanatory view of a fourth operation of the plate glass floating bed structure (first embodiment) according to the present invention.

FIG. 11 is an explanatory view of a fifth operation of the plate glass floating bed structure (first embodiment) according to the present invention.

FIG. 12 is a first explanatory view of an arrangement pattern of a flow rate adjusting member of the plate glass floating bed structure (first embodiment) according to the present invention.

FIG. 13 is a second explanatory view of the arrangement pattern of the flow rate adjusting members of the plate glass floating bed structure (first embodiment) according to the present invention.

FIG. 14 is an enlarged view of a main part of a plate glass floating bed structure (second embodiment) according to the present invention.

FIG. 15 is a view taken in the direction of arrow D in FIG. 14;

FIG. 16 is an enlarged view of a main part of a plate glass floating bed structure (third embodiment) according to the present invention.

FIG. 17 is a view taken in the direction of arrow E in FIG. 16;

FIG. 18 is a perspective view of a conventional sheet glass bending apparatus.

FIG. 19 is a sectional view taken along line FF of FIG. 18;

20 is a sectional view taken along line GG of FIG.

[Explanation of symbols]

10, 50, 60 ... Bed glass floating bed structure, 12,
51, 61 ... beds (transport beds), 14, 52, 62
... upper surface (curved upper surface), 20, 53, 63 ... air holes (air discharge holes), 30, 56, 66 ... flow path adjusting members, 30a-
30j: first to tenth flow path adjusting members, 35: sheet glass,
70 ... Identification means.

Claims (3)

[Claims] 1. A plurality of flow path adjusting members for adjusting a cross-sectional area of a flow path by closing a part of the flow path are provided, and a plurality of air holes for floating a sheet glass by air pressure are provided on an upper surface. In a bed structure in which a flow rate adjusting member is inserted into the air hole of the bed from above, the flow rate adjusting member is provided with identification means capable of being distinguished for each type so as to be distinguished when viewed from above. A bed structure for floating flat glass. 2. The bed structure according to claim 1, wherein said discriminating means is shaped differently for each type of flow rate adjusting member. 3. The plate glass floating bed structure according to claim 1, wherein said identification means is a mark, a color, or a material having a difference for each type of flow rate adjusting member.