JPH06247729A - Method for positioning platy material in bender and device therefor - Google Patents

Abstract

PURPOSE:To precisely position a sheet-shaped material at the bending position of a ring member without any operator and to position a sheet glass in a short time. CONSTITUTION:When a detection signal is inputted to a control part, a sheet glass 22 is positioned at a reserve position directly before a bending position by first and second positioners 40 and 44 based on a control pattern, the sheet glass 22 is conveyed to the bending position by a low-speed conveyor roller 21, and first and second positioning members 14 and 16 and a PQ ring 46 are controlled to place the sheet glass 22 being conveyed by the roller 21 on the PQ ring 46 raised from the standby position.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A horizontal bending furnace is known as a furnace for bending and forming a sheet glass used for a multi-curved side window for an automobile. In the horizontal bending furnace, the sheet glass heated in the heating furnace by the conveying rollers is carried into the horizontal bending furnace. When the sheet glass is transported to the vicinity of the end of the horizontal bending furnace, air is sucked through a plurality of small holes formed on the entire suction surface of the upper mold, and this suction force causes the sheet glass to be sucked on the suction surface of the mold. .

Next, the mold is lifted to move the quench ring from the side of the mold to below the glass sheet (that is, below the mold). Then, the plate glass is separated from the mold, and the quench ring is placed on the peripheral edge of the plate glass. After that, the plate glass is conveyed to a cooling station to be cooled and strengthened. At this time, the plate glass is formed into a double curved surface due to the agitation of the plate glass on the quench ring due to gravity.

As described above, since the mold is arranged in the horizontal bending furnace, it is difficult to accurately position the plate glass with respect to the mold. Therefore, there is a problem that the quality of the plate glass cannot be kept uniform. In order to solve this problem, the applicant of the present application proposed a horizontal bending furnace in which a mold and a quench ring are arranged outside the furnace in Japanese Patent Application No. 3-3310. As a result, the operator can manually adjust the positioning of the glass sheet, so that the glass sheet can be accurately positioned and the quality of the glass sheet can be kept uniform.

[0005]

However, since the operator manually adjusts the position of the plate glass in the related art, there is a problem that it takes time to position the plate glass. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for positioning a plate-shaped material in a bending apparatus capable of positioning a sheet glass at a bending position in a short time, and an apparatus therefor. .

[0006]

According to the present invention, a heated plate-shaped material carried out from a heating furnace is conveyed to a molding position, and the plate-shaped material conveyed to the molding position is provided under the conveyance path. In a method of positioning a plate-shaped material in a bending apparatus that is mounted on a ring member that has risen from a standby position and is bent by a molding member, the plate-shaped material that has been conveyed via the conveyance path is at a standby position of a positioner. A step of detecting that the sheet has been conveyed to a predetermined position on the downstream side, a step of lowering the positioner at the standby position to a position where the plate-shaped material can be extruded based on the detection signal, and a step of moving the positioner downstream of the conveying path Direction to a preliminary position immediately before the forming position, and a step of pushing the plate material being conveyed to the preliminary position by the positioner immediately before the plate material being conveyed reaches the preliminary position. , A step of conveying the plate-shaped material extruded to the preliminary position to the forming position in the conveying path, and a plate-shaped material that has been conveyed to the forming position and is still being conveyed is lifted from a standby position below the conveying path. A method for positioning a plate-shaped material in a bending apparatus, comprising: a step of mounting the plate-shaped material on the ring member; and an apparatus for performing the method.

[0007]

According to the present invention, there is provided the detecting means for detecting the plate-like material conveyed through the conveying path, and the first positioning means is provided so as to be able to contact the rear surface of the plate-like material. It has a first positioner. The first positioning unit moves the first positioner to the upstream side and the downstream side of the transport path and also moves in the vertical direction. In addition, the second positioning means includes a second positioner provided in the first positioning means so as to move to the upstream side and the downstream side of the transport path while following the first positioner and to move in the vertical direction. Have and second
The positioner is moved in a direction orthogonal to the transport direction of the transport path. When the control unit receives the detection signal from the detection means, the first, based on the control pattern stored in advance,
The second positioner positions the plate-shaped material at the preliminary position set immediately before the molding position, conveys the plate-shaped material positioned at the preliminary position to the molding position through the conveyance path, and continues the plate-shaped material. The first and second positioning means and the ring member are controlled so that the material is placed on the ring member that has risen above the transport path.

Therefore, the plate-shaped member can be accurately positioned at the molding position of the ring member without using the hands of an operator.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for positioning a plate-like material in a bending apparatus according to the present invention and its apparatus will be described in detail below with reference to the accompanying drawings. FIG. 1 shows an overall view of a plate-shaped material positioning device in a bending apparatus according to the present invention, and FIG. 2 shows a sectional view taken along line AA. Further, FIG. 3 shows a block diagram of a plate-shaped material positioning device in the bending apparatus according to the present invention. As shown in FIG. 1, the plate-shaped material positioning device 10 in the bending apparatus includes a detection unit 12, a first positioning unit 14, a second positioning unit 16, and a control unit 18.

The detecting means 12 has a sensor 12A, and the sensor 12A detects the plate glass 22 conveyed through the conveying roller 20. That is, the plate glass 22
Is transported by the transport rollers 20 and guided into the heating furnace 24,
It is heated in the heating furnace 24. The heated plate glass 22 is carried out of the heating furnace 24, and when conveyed to a predetermined position, the sensor 12A detects the plate glass 22. The sensor 12A inputs the detection signal of the plate glass 22 to the control unit 18 described later.

The first positioning means 14 has a pair of guide guides 26, and the pair of guide guides 26 are arranged on both sides of the conveying roller 20 in parallel with the conveying direction. A ball screw 28 is rotatably supported by the guide 26, and a traveling plate 30 is screwed to the ball screw 28. The traveling plate 30 is slidably supported by the guide 26. Further, an AC servo motor 32 is connected to the ball screw 28, and the AC servo motor 32 is fixed to the downstream end of the guide guide 26. Therefore, when the AC servomotor 32 is driven, the ball screw 28 rotates and the traveling plate 30 moves in the upstream and downstream directions along the guide guide 26.

The traveling plate 30 is provided with a cylinder end portion of an air cylinder 34 (see FIG. 2).
An elevating plate 36 is provided at the rod end of No. 4. Both ends of a square rod 38 are fixed to the pair of lift plates 36, and the first positioner 4 is attached to the central portion of the square rod 38.
0 and 40 are fixed. The air cylinder 34 is connected to an air supply source (not shown) via an electromagnetic valve 35 (see FIG. 3). The electromagnetic valve 35 operates based on a signal from the control unit 18, which will be described later, whereby the air cylinder 34 expands and contracts.

Therefore, the first positioners 40, 40 are
When the C servo motors 32, 32 are driven, the transport roller 20
It moves in the upstream and downstream directions along. Further, when the air cylinders 34, 34 expand and contract, the angular rod 38 moves up and down via the elevating plate 36, so that the first positioners 40, 40 move vertically with the angular rod 38.

The second positioning means 16 has an arm 42, and an end portion of the arm 42 is fixed to the elevating plate 36. The arm 42 is provided with an air cylinder (not shown), and the air cylinder has a second positioner 44.
Is provided. The second positioner air cylinder is connected to an air supply source (not shown) via an electromagnetic valve 43 (see FIG. 3). The electromagnetic valve 43 operates based on a signal from the control unit 18, which will be described later, and
The second positioner air cylinder expands and contracts. The second positioner 44 is slidably supported by the arm 42. Therefore, when the air cylinder for the second positioner expands and contracts, the second positioner 44 moves along the arm 42. Further, since the arm 42 is fixed to the elevating plate 36, the second positioner 44 operates as the first positioner 4
0 and 40 move in the upstream and downstream directions along the transport roller 20, and also move in the vertical direction.

The above-mentioned control section 18 (see FIG. 3) receives the detection signal output from the sensor 12A of the detection means 12, and controls the AC servomotors 32, 32 of the first positioning means 14 based on this detection signal. While driving, the air cylinder 34 of the first positioning means 14 and the second positioner air cylinder of the second positioning means 16 are operated. That is, the control unit 18 controls the AC servo motors 32, 3
2 to the electromagnetic valve 35 connected to the air cylinders 34 and 34, and to the electromagnetic valve 43 connected to the second positioner air cylinder. Can be output.
In addition, the control unit 18 uses the AC servo motors 32, 3 based on the control pattern stored in the control unit 18 in advance.
2. The electromagnetic valves 35 and 43 can be controlled respectively. Further, the control unit 18 can control the actuator 47 (see FIG. 3) of the presquinch ring (hereinafter, PQ ring) 46 based on a control pattern stored in the control unit 18 in advance. As a result, the plate glass 22 is positioned at the standby position of the PQ ring 46 by the first and second positioners 40 and 44, and the positioned plate glass 22 can be placed on the PQ ring 46.

The operation of the plate-shaped material positioning device in the bending apparatus constructed as described above will be described. The plate glass 22 is transported into the heating furnace 24 by the transport rollers 20 and heated in the heating furnace 24. When the heated plate glass 22 is carried out of the heating furnace 24 and conveyed to a predetermined position,
The sensor 12A detects the plate glass 22. Sensor 12A
Outputs a detection signal of the plate glass 22 to the control unit 18.

The control unit 18 controls the AC servomotors 32, 32 of the first positioning unit 14, the air cylinder 34 of the first positioning unit 14, and the second positioning unit 16 based on the detection signal output from the sensor 12A. And controlling the second positioner air cylinder. That is, the control unit 1
8 outputs a control signal to the AC servo motors 32, 32,
Further, the control signal is output to the electromagnetic valve 35 connected to the air cylinders 34, 34, and the control signal is output to the electromagnetic valve 43 connected to the second positioner air cylinder. In this case, the control unit 18 has the control unit 1 in advance.
The AC servomotors 32, 32 and the electromagnetic valves 35, 43 are respectively controlled based on the control pattern stored in the control unit 8, and the control unit 18 further controls the control patterns stored in the control unit 18 in advance. PQ ring 46
Control the actuator 47. As a result, the plate glass 22 is positioned at the standby position of the PQ ring 46 by the first and second positioners 40 and 44, and the positioned plate glass 22 is placed on the PQ ring 46.

Here, the first and second positioners 40, 4
The control pattern No. 4 will be described with reference to FIGS. 4 and 5. In FIG. 4 (A),-denotes the transport distance of the transport roller 20, and-denotes the moving distance of the first positioner 40. In Fig. 4 (B),-denotes the transport speed of the transport roller 20,
Indicates the moving speed of the first positioner 40. Also, FIG.
In FIG. 5A, − represents the moving distance of the second positioner 44, and in FIG. 5B, − represents the second positioner 4.
4 shows the moving speed. As indicated by-in FIG. 4, the transport speed of the transport roller 20 is in an accelerating state between T1 and T3.
It is in the deceleration state between 3 and T5.

The control pattern is such that first, the air cylinder 34 of the first positioning means 14 is contracted so that the first,
The second positioners 40 and 44 are lowered to a predetermined position where the plate glass 22 can be extruded. In this case, the plate glass 22 is conveyed to the downstream side of the first positioner 40. Next, the AC servomotor 32 of the first positioning unit 14 is driven to move the first positioner 40 in the downstream direction of the transport roller 20. In this case, the moving speed of the first positioner 40 is slower than the carrying speed of the carrying roller 20 until T2,
It is set so as to be faster than the transport speed of the transport roller 20 at T2 to T5. As a result, the first positioner 40 is T
In 4 the sheet glass 22 is caught up and the sheet glass 22 is extruded to the downstream side at a speed higher than the conveying speed of the conveying roller 20 between T4 and T5.

On the other hand, before the first positioner 40 abuts the rear surface of the plate glass 22 at T4, the second positioner 44
Starts moving in the direction of pushing the plate glass 22 (Fig. 5).
reference). Then, the second positioner 44 abuts the side surface of the glass sheet 22 in the deceleration state immediately before T5 and pushes the glass sheet 22 in a direction orthogonal to the transport direction up to T5. In this way, the first and second positioners 40 and 44 respectively push the plate glass 22 to the transport direction and the direction orthogonal to the transport direction to T5, whereby the plate glass 22 is positioned at the preliminary position. Incidentally, when the plate glass 22 is positioned at the preliminary position, the first and second positioners 40, 44 are returned to their respective standby positions. In FIG. 4, the curve between T5 and T7 shows the return characteristic of the first positioner 40, and in FIG. 5, the curve between T5 and T8 shows the return characteristic of the second positioner 44.

As described above, the first and second positioners 40 and 44 are used for the flat glass 2 when the respective speeds are in the decelerated state.
I tried to push out 2. Furthermore, the extrusion amount of the sheet glass 22 was set to the minimum by starting the extrusion of the sheet glass 22 by the first and second positioners 40 and 44 immediately before the preliminary position. This can prevent the plate glass 22 from being damaged.

Further, after the plate glass 22 is positioned at the preliminary position by the first and second positioners 40 and 44, the plate glass 22 is continuously conveyed by the low speed conveying roller 21. Then, the plate glass 2 being conveyed by the low-speed conveying roller 21
When 2 reaches the forming position above the standby position of the PQ ring 46, the PQ ring 46 rises from the standby position and the plate glass 22 is placed on the PQ ring 46. This completes the control pattern.

In this way, the first and second positioner 4
The plate glass 22 positioned at the preliminary position at 0, 44,
It is possible to prevent the heated plate glass 22 from being distorted by continuously carrying it by the carrying roller 21 without stopping at the preliminary position. On the other hand, the plate glass 22 placed on the PQ ring 46 is bent into a predetermined shape by a mold (not shown).

In the above-described embodiment, the case where the plate glass 22 is positioned has been described, but the present invention is not limited to this and can be applied to other plate-shaped members.

[0025]

As described above, according to the plate-like material positioning method and the apparatus in the bending apparatus of the present invention, the first and second positioners moved based on the control pattern stored in advance. Position the plate-shaped material at the preliminary position set immediately before the forming position, convey the plate-shaped material positioned at the preliminary position to the forming position on the conveyance path, and keep the plate-shaped material that is continuing conveyance at the standby position. It can be mounted on a ring member raised from above.

As a result, the plate-shaped material is accurately positioned at the molding position of the ring member without using the hands of an operator, so that the plate glass can be positioned in a short time.
Further, the plate-shaped material is pushed out when the speed of each of the first and second positioners is in a decelerating state, and the extrusion of the plate-shaped material by the first and second positioners is started immediately before the preliminary position. The extrusion amount of the plate-shaped material was set to the minimum. Accordingly, it is possible to prevent the plate-shaped material from being damaged.

Further, after the plate-shaped material is positioned at the preliminary position by the first and second positioners, the plate-shaped material is continuously conveyed until it is placed on the ring member without being stopped at the preliminary position, It is possible to prevent distortion of the plate-shaped material in the heated state.

[Brief description of drawings]

FIG. 1 is an overall schematic view of a plate-shaped material positioning device in a bending apparatus according to the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of the plate-shaped material positioning device in the bending apparatus according to the present invention.

FIG. 3 is a block diagram of a plate-shaped material positioning device in a bending apparatus according to the present invention.

FIG. 4 is an explanatory view illustrating an operating state of the first positioner of the plate-shaped material positioning device in the bending apparatus according to the present invention.

FIG. 5 is an explanatory view illustrating an operating state of the second positioner of the plate-shaped material positioning device in the bending apparatus according to the present invention.

[Explanation of symbols]

 10 ... Positioning device for plate-like material in bending apparatus 12 ... Detecting device 14 ... First positioning device 16 ... First positioning device 18 ... Control unit 20, 21 ... Conveying roller (conveying path) 22 ... Sheet glass (plate-like) Material) 24 ... Heating furnace 40 ... First positioner 44 ... Second positioner 46 ... PQ ring (ring member)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akio Imaichi 2-4-1 Tamachi, Kawasaki-ku, Kawasaki-shi, Kanagawa Asahi Glass Co., Ltd. Keihin Factory (72) Tsukei Kawaguchi 2 Tamachi, Kawasaki-ku, Kawasaki-shi, Kanagawa 4-1-1 Asahi Glass Co., Ltd. Keihin factory

Claims (3)

[Claims] 1. A heated plate-shaped material carried out from a heating furnace is conveyed to a molding position, and the plate-shaped material conveyed to the molding position is transferred to a ring member which is lifted from a standby position below the conveyance path. In a method for positioning a plate-shaped material in a bending apparatus for placing and bending with a molding member, the plate-shaped material that has been conveyed via the conveyance path is conveyed to a predetermined position downstream of the standby position of the positioner. The step of detecting that the positioner at the standby position is lowered to a position where the plate-shaped material can be extruded based on the detection signal, and the positioner immediately before the molding position in the downstream direction of the transport path. A step of moving to a preliminary position, and immediately before the plate-shaped material being conveyed reaches the preliminary position,
A step of pushing the plate-shaped material being conveyed to the preliminary position with the positioner; a step of conveying the plate-shaped material extruded to the preliminary position to the forming position on the conveying path; A method of positioning a plate-shaped material in a bending apparatus, comprising: mounting a continuing plate-shaped material on the ring member that has risen from a standby position below the transport path. 2. A heated plate-shaped material carried out of a heating furnace is conveyed to a molding position, and the plate-shaped material conveyed to the molding position is raised to a ring member which is elevated from a standby position below the conveyance path. In a plate-shaped material positioning device in a bending apparatus that is placed and bent by a molding member, a detection unit that detects the plate-shaped material conveyed through the conveyance path, and a rear surface of the plate-shaped material. A first positioner that has a first positioner that can come into contact with the first positioner, the first positioner moving the first positioner to the upstream side and the downstream side of the transport path, and moving in the vertical direction; Following the positioner, upstream of the transport path,
It has a second positioner provided in the first positioning means so as to move to the downstream side and to move in the vertical direction, and the second positioner is arranged in a direction orthogonal to the carrying direction of the carrying path. Based on the moving second positioning means and the detection signal output from the detecting means, the plate material is positioned by the first and second positioners at the preliminary position set immediately before the forming position. The plate member positioned at the preliminary position is conveyed to the forming position on the conveying path, and the plate member being conveyed is placed on the ring member raised from the standby position. A positioning device for a plate-shaped material in a bending apparatus, comprising: a second positioning means and a control unit that controls the ring member according to a control pattern stored in advance. 3. The control pattern is such that, based on the detection signal, the first and second positioners descend from a standby position to a position where the plate-shaped material can be pressed, and the first and second positioners are provided. Is moved to a preliminary position immediately before the forming position in the downstream direction of the conveying path, immediately before the plate-shaped material being conveyed reaches the preliminary position,
The plate material being conveyed is extruded to the preliminary position by the first and second positioners, the plate material extruded to the preliminary position is conveyed to the forming position on the conveying path, and is conveyed to the forming position, The plate-like material positioning device in the bending apparatus according to claim 2, wherein the plate-like material that is being conveyed is placed on the ring member that has been lifted from the standby position.