JPH05170468A - Bending device for planar material - Google Patents

Abstract

PURPOSE:To improve the quality and productivity in bending of a planar material. CONSTITUTION:The shaping part 14 on the downstream side of a heating furnace 12 has transporting rollers 48 divided to enable the passage of a PQ ring 50 and a die 26A. A glass plate 52 for wide windshields is transported by the transporting rollers 48 to the position below the die 26A. Cooling parts 16, 18 are placed on the downstream side of the shaping part 14. A transporting mechanism 20 moves the PQ ring 50 between the cooling parts 16, 18 and the shaping part 14 and lifts the PQ ring 50 in the vertical direction of the transporting rollers 48.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending apparatus for bending a plate-shaped material such as a glass plate for a multi-curved side window for an automobile.

[0002]

2. Description of the Related Art Generally, a vertical pressing furnace or a horizontal bending furnace is used for bending a glass sheet used for a double curved side window for an automobile. Vertical press furnace
The glass plate is hung vertically on a hanging jig, heated in a heating furnace, drawn out to a press mold outside the furnace, press-molded by a mold, and further drawn to a cooling station to be cooled and strengthened. On the other hand, in the horizontal bending furnace, the glass plate heated in the heating furnace by the conveying rollers is carried into the horizontal bending furnace.
When the glass plate is conveyed to the vicinity of the end of the horizontal bending furnace, hot air from the bottom of the hearth is blown up, and air is sucked into the member from the small holes formed on the entire suction surface of the upper mold member. The glass plate is attracted to the flat plate attracting member by the blowing force and the suction force.

Next, the mold member rises and moves the quench ring from the side to below the glass plate. Then, the peripheral edge of the glass plate is placed on the quench ring to separate the glass plate from the flat plate suction member, and the glass plate is conveyed to a cooling station and then cooled and strengthened.

[0004]

However, the vertical press furnace has a problem that a hanging trace remains because the glass plate is vertically hung by the hanging jig. Further, in the horizontal bending furnace, when the mold member is replaced according to the type of product, it is necessary to wait until the mold member is cooled to a replaceable temperature because the mold member is provided inside the furnace. Therefore, there is a problem that the job change time becomes long and the productivity is lowered. Further, in the horizontal bending furnace, while the glass plate is being bent and formed by the mold member, the next glass plate that has been conveyed must stand by in front of the mold member, resulting in low productivity.

Further, it is extremely difficult to simply apply the above-mentioned molding method to the out-of-furnace molding method. That is, when the glass plate molding mold is blown up and adsorbed, the wind of the air wiped in blows the outside air into the glass plate molding mold, so that the glass cannot be maintained at the moldable temperature. The present invention has been made in view of the above circumstances, and provides a plate-shaped material bending apparatus capable of improving the productivity of a side window glass for an automobile and further improving the quality. The purpose is to do.

[0006]

In order to achieve the above object, the present invention provides a heating furnace which conveys a plate-shaped material while heating it, and a peripheral edge of the plate-shaped material which is located on the downstream side of the heating furnace. A conveying roller is divided and arranged so that a vertically movable ring that supports the upper and lower passages can be passed up and down, and a forming portion provided with a forming die provided above the ring, and a downstream side of the forming portion. A cooling unit that cools the plate-shaped material, and a ring that moves between the cooling unit and the molding unit, and the ring contacts the ring housing position below the divided conveying rollers and the molding die. And a conveyance mechanism that moves up and down between the bending positions.

In order to achieve the above object, the present invention provides a pair of the cooling units on both sides of the molding unit, and a pair of the transport mechanisms corresponding to the pair of cooling units. It is characterized in that the plate-shaped material bent and formed by the forming unit is distributed to one cooling unit and the other cooling unit.

[0008]

According to the present invention, the plate-shaped material is heated in the heating furnace and conveyed in the heating furnace, and the plate-shaped material carried out from the heating furnace is conveyed to the lower part of the forming die by the conveyance rollers of the forming section. To do.
The plate-shaped material is arranged below the forming die and the transport mechanism is operated to raise the ring that can contact the peripheral surface of the plate-shaped material that is stored below the transport roller, so that the plate-shaped material is formed into a ring. The plate-shaped material is placed on the forming die and pressed to be bent.

After the bending is completed, the mold is raised and then,
The transport mechanism is operated to move the ring from the lower side of the forming die to the cooling section, the bent plate-shaped material is arranged in the cooling section, and the cooling section cools the plate-shaped material. In this way, the ring capable of contacting the peripheral surface of the plate-shaped member can be stored below the transport roller, so that the molding unit can be arranged outside the furnace. Further, according to the present invention, a pair of cooling parts are provided on both sides of the molding part,
In addition, a pair of transport mechanisms is provided corresponding to the pair of cooling units, and the plate-shaped material bent and formed by the forming unit can be distributed to one cooling unit and the other cooling unit.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A plate-shaped material bending apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. As shown in FIG. 1, the bending apparatus 10 according to the present invention includes a heating furnace 12, a molding unit 14,
The heating furnace 12 includes a first and second cooling units 16 and 18, a transfer mechanism 20, and the like. Transport path 2
Reference numeral 2 is composed of conveying rollers 22A, 22A ... And the conveying path 22 is covered with a furnace frame 22B.

A molding section 14 is provided on the downstream side of the heating furnace 12, and the molding section 14 is composed of a conveying means 24 and a molding means 26. As shown in FIG. 2, the transporting means 24 includes driving rollers 28, 28 ...
Moreover, it is rotatably supported. Driving rollers 28, 2
Tungsten carbide or the like is sprayed on both ends of 8 to form high-friction portions 28A, 28A ... And a pair of endless steel belts 30 are in contact with the high-friction portions 28A, 28A.

The pair of steel belts 30 are stretched around a pair of drive pulleys 32 and tension pulleys 34, and the pair of drive pulleys 32 are fixed to both ends of a shaft 36. The shaft 36 is connected to a drive shaft 42 of an AC servomotor 40 via a speed reducer 38.
Further, the pair of tension pulleys 34 are rotatably supported, and are further adjusted so that a predetermined tension can be applied to the pair of steel belts 30.

Pressing rollers 44, 44 ... Are rotatably provided above the steel belt 30.
A steel belt 30 is sandwiched between the drive rollers 28, 28 ,. As a result, the AC servo motor 4
When 0 is driven, the turning force of the steel belt 30 is transmitted to the drive rollers 28, 28 ...
8 ... rotates.

Further, the driving rollers 28, 28 ... Have a high friction portion 28 in which a pair of tungsten carbide or the like is sprayed.
B is formed, and the outer periphery of the drive disk 46 is in contact with the pair of high friction portions 28B. The drive disk 46 is rotatably supported by a support member (not shown), and a high friction portion 46A similar to 28B is formed on the outer periphery of the drive disk 46. Furthermore, the outer periphery of the transport roller 48 is in contact with the high friction portion 46A of the drive disk 46. The transport roller 48 is rotatably supported by a support member (not shown). Therefore, when the AC servomotor 40 is driven, the driving roller 2
.. are transmitted to the conveying rollers 48, 48 ... via the drive disks 46, 46 ..
8, 48 ... Rotate.

The carrying rollers 48, 48 ... Are divided at positions corresponding to the frame shape of a press quench ring (hereinafter referred to as "PQ ring") 50 shown in FIG.
As a result, the PQ ring 50 moves the transport rollers 48, 48 ...
Can be moved below and above the transport rollers 48 ,. Further, as shown in FIG. 3, the carrying rollers 48, 48 ...
22A ... Is supported in the same plane and the side window glass plate 52 conveyed from the conveying rollers 22A, 22A of the heating furnace 12 to the mold 26A of the molding means 26.
To the lower part of. When the side window glass plate 52 is conveyed below the mold 26A, the rear end portion of the side window glass plate 52 is detected by a detection means (not shown), and the AC servomotor 40 stops based on this detection signal. As a result, the side window glass plate 52
Is positioned immediately below the mold 26A.

At this time, when the PQ ring 50 is raised from below the conveying rollers 48, 48, the frame body of the PQ ring 50 contacts the peripheral edge of the side window glass plate 52. Then, when the PQ ring 50 is further raised, the side window glass plate 52 comes into contact with the molding surface of the mold 26A and is bent. In this case, the molding means 26
Operates to adsorb the side window glass plate 52 from the molding surface of the mold 26A.

The first primary cooling unit 1 is provided on the left side of the molding unit 14.
6 is provided, and the second primary cooling unit 18 is provided on the right side of the molding unit 14. First and second cooling unit 1
The reference numerals 6 and 18 have the same configuration, and upper cooling air outlets 16A and 18A and lower cooling air outlets 16B and 18B are provided to face each other. It should be noted that 16A is not shown in the figure because it is a simple figure, but it is located at a position opposite to 16B.
It is provided similarly to A and 18B. Then, the PQ ring 50 and the side window glass placed on the PQ ring 50 are provided between the upper cooling nozzle 16A and the lower cooling nozzle 16B and between the upper cooling nozzle 18A and the lower cooling nozzle 18B. The plate 52 enters, and the side window glass plate 52 is cooled by the air blown from the air outlet.

As shown in FIG. 1, the transport mechanism 20 is provided with rails 60 along the molding section 14 and the first and second cooling sections 16 and 18. As shown in FIG. 3, a moving portion 62 is slidably supported on the rail 60 via a guide 64, and the moving portion 62 is provided with an elevating portion 66.
In the elevating part 66, a link 66A and a link 66B are foldably connected to each other, and folding and extension of the link 66A and the link 66B are performed by an actuator such as an AC servo motor (not shown).

A support base 66C is pivotally supported on the lower ends of the links 66B and 66B, and the above-mentioned PQ ring 50 is fixed to the left end of the support base 66C in a protruding state. A pair of moving parts 62 are provided on the left and right of the molding part 14, and each moving part 62 is provided with an actuator such as an AC servomotor. By the operation of these actuators, the PQ ring 50 of the left moving unit 62 moves between the molding unit 14 and the first primary cooling unit 16, and the PQ ring 50 of the right moving unit 62 moves between the molding unit 14 and the second primary cooling unit 16. It moves between the primary cooling units 18. Also, link 66A and link 66
When B and F are folded, the PQ ring 50 is located above the transport rollers 48, 48, ...
6B and the PQ ring 50, the PQ ring 50
It is located below 8, 48 ...

As shown in FIG. 1, a first secondary cooling unit 70 is provided on the left side of the first primary cooling unit 16, and the secondary cooling unit 70 has a glass plate for a side window. A first support member 72 for receiving 52 is movably provided. When the primary cooling is completed, the air from the upper cooling nozzle 16A is stopped, and the side window glass plate 52 is levitated from the PQ ring 50. Next, the first support member 72
The first support member 72 receives the side window glass plate 52 at the first primary cooling unit 16,
The received side window glass plate 52 can be transported to the first secondary cooling unit 70. As a result, the side window glass plate 52 is secondarily cooled.

Further, a second secondary cooling portion 74 is provided on the right side of the second primary cooling portion 18, and the secondary cooling portion 74 receives a second glass plate 52 for side windows.
A support member 76 is movably provided. The second support member 76 operates in the same manner as the first support member 72 to convey the side window glass plate 52 from the second primary cooling unit 18 to the second secondary cooling unit 74.

The operation of the bending apparatus according to the present invention constructed as above will be described. First, as shown in FIG. 1, the PQ ring 50 of the left moving unit 62 is arranged below the conveying rollers 48 of the molding unit 14. In this state,
The glass plate 5 for the side window is conveyed in the conveying path 22 of the heating furnace 12.
2 is conveyed toward the molding unit 14. The conveyed side window glass plate 52 is carried out of the heating furnace 12,
It is conveyed to the conveying rollers 48 of the forming unit 14.
In this case, since the AC servo motor 40 of the molding unit 14 is being driven, the rotational force of the AC servo motor 40 is transmitted to the transport rollers 48, 48 via the drive rollers 28, 28 ..., Drive disks 46, 46. And the transport rollers 48,
48 ... is rotating.

Therefore, the side window glass plate 52 conveyed to the conveying rollers 48, 48 ...
8 and 48 are conveyed to below the mold 26A. At this time, the rear end portion of the side window glass plate 52 is detected by a detection means (not shown), and the AC is detected based on the detection signal.
The servo motor 40 stops. As a result, the side window glass plate 52 is positioned immediately below the mold 26A.

Next, the PQ ring 50 of the left-side moving portion 62 disposed below the transport rollers 48, 48 ... Is moved above the transport rollers 48, 48 ...
Then, the side window glass plate 52 is received. After receiving the side window glass plate 52, the PQ ring 50 is further raised to mold the side window glass plate 52 into the mold 26.
Contact the molding surface of A.

In this case, air is sucked from the molding surface of the mold 26A, and the side window glass plate 52 is sucked. Further, since the outer periphery of the side window glass plate 52 is pressed against the molding surface of the mold 26A by the PQ ring 50, the side window glass plate 52 is bent and formed into a desired shape. After the bending is completed, the mold 26A moves up, and then the PQ ring 50 and the PQ of the moving portion 62 on the left side are moved.
Side window glass plate 52 mounted on the ring 50
Enters between the upper cooling nozzle 16A and the lower cooling nozzle 16B of the first cooling unit 16. At this time, air is blown out from the upper cooling nozzle 16A and the lower cooling nozzle 16B, and the side window glass plate 52 is primarily cooled.

The glass plate 52 for side windows that has been primarily cooled is placed on the first supporting member 72, and the first supporting member 72
At the same time, it is conveyed to the first secondary cooling unit 70. Here, the side window glass plate 52 is secondarily cooled. on the other hand,
The glass plate 52 for the side window in the first primary cooling unit 16
During cooling, the new side window glass plate 52 is conveyed to the forming unit 14. Then, the new side window glass plate 52 is transferred by the PQ ring 50 of the moving portion 62 on the right side in the same manner as the PQ ring 50 on the left side and subjected to bending, primary and secondary cooling.

Thus, the side window glass plate 5
Since the two pieces are alternately distributed to the left and right, the side window glass plate 52 can be continuously bent and formed.
In the above embodiment, the case where the pair of PQ rings 50 is provided has been described, but the present invention is not limited to this, and the present invention can be applied to the case where one or more PQ rings are provided.

In the above-mentioned embodiment, the bending of the glass plate for the side window of the automobile has been described. However, the bending device of the present invention is not limited to the glass plate for the side window of the automobile, but other glass plates such as roof and rear. The present invention can also be applied to other plate-shaped materials such as the glass plate and plastic other than the glass plate.

[0029]

As described above, according to the plate-shaped material bending / forming apparatus of the present invention, the ring capable of contacting the peripheral surface of the plate-shaped material can be housed below the conveying roller. The part can be arranged outside the furnace. Therefore, since the molding die does not reach a high temperature, it is not necessary to wait until the molding die is cooled to a temperature at which the molding die can be replaced, so that the job change time can be shortened.

Further, in the plate-shaped bending apparatus, a pair of cooling units are provided on both sides of the forming unit, and a pair of transport mechanisms are provided corresponding to the pair of cooling units. Therefore, the plate-shaped material bent and formed in the forming unit can be distributed to the one cooling unit and the other cooling unit, so that the plate-shaped material can be continuously bent and formed. Thereby, the productivity of the plate-shaped material can be improved.

Further, since the present invention employs the horizontal bending furnace, it is not necessary to vertically hang the plate-like material by a hanging jig, and no trace of hanging is left on the plate-like material, so that the quality of the plate-like material is improved. be able to.

[Brief description of drawings]

FIG. 1 is a perspective view of a bending apparatus for a plate-shaped material according to the present invention.

FIG. 2 is an enlarged view of a main part of a plate-shaped material bending apparatus according to the present invention.

FIG. 3 is a side view of the plate-shaped material bending apparatus according to the present invention.

[Explanation of symbols]

 10 ... Bending forming device 12 ... Heating furnace 14 ... Forming part 16, 18 ... Primary cooling part 20 ... Conveying mechanism 26A ... Mold 28 ... Drive roller 46 ... Drive disk 48 ... Conveying roller 50 ... PQ ring 52 ... Side window use Glass plate

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroshi Tsuji 2-4-1 Tamachi, Kawasaki-ku, Kawasaki-shi, Kanagawa Asahi Glass Co., Ltd. Keihin Factory (72) Tsukei Kawaguchi 2-chome, Tamachi, Kawasaki-ku, Kanagawa 4th-1 Asahi Glass Co., Ltd. Keihin factory

Claims (4)

[Claims] 1. A heating furnace that conveys a plate-like material while heating it, and a conveyer that is located on the downstream side of the heating furnace and that can move up and down so as to support the peripheral edge of the plate-like material so that it can pass vertically. A molding part including rollers, which is divided and arranged and is provided above the ring, a cooling part which is located on the downstream side of the molding part and cools the plate-shaped material, and the ring. A transport mechanism that moves between the cooling unit and the molding unit, and that moves the ring up and down between a ring storage position below the divided transport rollers and a bending molding position in which the ring abuts against the molding die. Bending and forming equipment. 2. The plate-shaped member bent by the molding unit, wherein a pair of the cooling units is provided on both sides of the molding unit, and a pair of the transport mechanisms is provided corresponding to the pair of cooling units. 2. The bending apparatus according to claim 1, wherein the bending forming apparatus is distributed to one cooling section and the other cooling section. 3. A plurality of rotatable driving rollers are provided below the plurality of divided conveying rollers of the molding unit in parallel with the conveying rollers at a predetermined interval, and the driving rollers and the conveying rollers are arranged in parallel with each other. A disk member is rotatably provided between the disk roller and the drive roller and the transport roller, and the rotational force of the drive roller is transmitted to the plurality of transport rollers via the disk member. The bending apparatus according to claim 1. 4. The bending apparatus according to claim 3, wherein the plurality of divided conveying rollers and the plurality of disc members are integrally configured and can be attached to and detached from the drive roller.