JP2003306338A - System for cutting plate glass - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for cutting plate glass which can automatically perform the inspection of defects and cutting of the plate glass. <P>SOLUTION: The system is provided with a walking beam 20 for conveying plate glass, a glass take-out apparatus 3 for mounting the plate glass on the walking beam, the first inspection device 5 arranged in the vicinity of the glass take-out apparatus, a positioning device 9 arranged at the upstream end of the walking beam, a scribing device 10 for forming a scribing line in the plate glass, a trimming device 13 and cutting devices 15 and 16 for cutting the plate glass along the scribing line, a plate glass sorting robot 18 arranged at the downstream end of the walking beam, and a controller 21 for controlling the scribing device, the trimming device, the cutting devices and the sorting robot on the basis of the inspection results of the first inspection device and the actuation results of the positioning device. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a sheet glass cleaving system. More specifically, the present invention relates to a plate glass cleaving system that applies a bending force to a plate glass having a scribe line for cutting at a predetermined position on the surface thereof to cut the plate glass from the scribe line.

[0002]

2. Description of the Related Art A conventional plate glass cutting system is shown in FIG.
As shown in FIG. 5, from the crate 51 in which a large number of original glass plates are stored vertically, the glass take-out device 53 removes the interleaving paper while the glass take-out device 53 places the glass sheets one by one on the belt conveyor 54. Reference numeral 55 is a slip sheet stand. Since the protective film is attached to the back surface of the sheet glass conveyed by the belt conveyor 54, the protective film is removed by the film peeling device 56 during the conveyance.

Then, the sheet glass sent to the engraving device 57 is automatically positioned at a predetermined position there, and a scribe line for cutting is engraved at a predetermined position on the surface of the sheet glass. After that, the plate glass is conveyed to the product dividing table 58, where it is cut manually. Furthermore, the worker W
Distinguishing defective flat glass with a mark on the spot, and
The defective plate glass is discriminated and the defective product is stored in the defective product storage box 59 outside the line. It should be noted that the cleaving failure also includes a failure caused by a defective marking line. Only the normal flat glass is stocked by the operator's hand 60
It is mounted on top and sent to the next step 61.

As described above, the conventional cutting system does not have a function of discriminating a defective original plate or a defective cutting, and the worker W
Entrusted to the skilled skills of. Further, the protective film on the back surface must be peeled off before the marking line is cut and the plate glass is cut. Further, since a conveyor belt is used as the conveyor for conveying the sheet glass, the sheet glass G and the belt B may slip on each other at the connection portion between the conveyors 54 shown in FIG. is there. Therefore, high speed transportation must be avoided.

[0005]

As described above,
The conventional cleaving system requires considerable skill of the operator. Therefore, a large number of skilled workers are required to perform continuous operation for 24 hours. Further, since the protective film is always removed before the marking line is cut on the glass sheet, the back surface of the glass sheet may be scratched during transportation by the belt conveyor.

The present invention has been made to solve the above problems, and it is an object of the present invention to provide a plate glass cutting system which automatically inspects and cuts a plate glass for defective products and does not require the skill of an operator. Has an aim.

[0007]

DISCLOSURE OF THE INVENTION A plate glass cleaving system of the present invention comprises a conveying line for conveying plate glass,
A glass take-out device for placing the plate glass to be processed on the transfer line, a first inspection device arranged near the glass take-out device for inspecting a defect of the plate glass, and arranged on the transfer line Also, a cleaving device for cleaving the sheet glass along a scribe line for cutting that is engraved on the sheet glass, a sheet glass sorting robot arranged at the downstream end of the conveying line, and an inspection by the first inspection device And a controller for controlling the sorting robot based on the result, and the sorting robot is configured to sort the sheet glass based on an instruction from the controller.

According to such a cutting system, a healthy product and a defective product can be automatically distinguished by automatically performing the cutting and inspection of the sheet glass without requiring the skill of an expert.

A cleaving system in which the above-mentioned transportation line is composed of a walking beam is preferable. This is because the walking beam does not cause the slip due to the relative displacement with the belt or the like due to the action of the inertia of the plate glass unlike the conventional conveyance by the belt conveyor or the like. Therefore, there is no risk of damage to the plate glass due to slippage.

A known technique can be used for the walking beam.

In the cleaving system in which the plate glass positioning device is arranged at the upstream end of the above-mentioned walking beam carrying line, once the plate glass is positioned with respect to the carrying line by the positioning device,
Since the positional deviation due to the slip between the plate glass and the transfer line does not occur, there is no need for repositioning in the downstream process, and the entire system is simplified.

A cleaving system in which the control device is configured to instruct the cleaving position of the sheet glass by the cleaving device based on the inspection result by the first inspecting device is preferable. This is because, based on the inspection result, defective products can be discarded without operating each device such as marking line marking and cutting, and the efficiency of the entire system is improved. .

In such a cutting system, a plate glass positioning device is arranged at the upstream end of the above-mentioned conveying line, and a cutting device for forming a cutting line on the plate glass is arranged downstream of the positioning device. A cleaving system which is provided and is configured such that the control device is configured to instruct the engraving position of the scribe line for cleaving the plate glass by the engraving device based on the inspection result of the first inspection device is preferable. Based on the inspection results, for example, if a defect exists near the periphery of the glass sheet, change the position of the marking line from the original planned position so that the defect lies within the part to be discarded by trimming. It becomes possible. As a result, the material yield is increased. Since the control device can confirm the position of the plate glass to be processed by the signal from the positioning device at the upstream end, the defect position on the plate glass can be specified. Therefore, it is possible to change the position of the marking line corresponding to the defective portion.

A second inspection device for inspecting a defect due to the cutting of the sheet glass is arranged on the upstream side of the seeding robot, and the controller controls the seeding based on the inspection result by the second inspection device. A cleaving system configured to control the split robot is preferred. This is because the second inspection device can detect a breaking defect on the plate glass, and the plate glass can be excluded from the product.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a plate glass cleaving system of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a plan view showing an embodiment of a plate glass cleaving system of the present invention. FIG. 2 is a plan view showing an example of a plate glass product obtained by this system.

As shown in FIG. 2 (a), this system 1 has marking lines La and Lb for trimming and marking lines L for dividing, which are marked on a plate glass G, and these marking lines L
By applying a bending force across a, Lb, and L, the plate glass G is cut into a predetermined size along the marking line. As shown in FIG. 2B, first, the plate glass G
Trimming is performed to remove the peripheral edge portion E in a prescribed shape, and then cutting is performed along the dividing scribe line L to obtain a product sheet glass B having a predetermined size and shape.

As shown in FIG. 1, the system 1 includes a crate 2, a glass take-out device 3, a slipping paper peeling device 4, a first inspection device 5, and a glass pedestal 6 from the upstream side along the conveying direction of the glass sheet G. A glass transfer device 7, a protective film peeling device 8, a positioning device 9, an engraving device 10, an intermediate pedestal 11, a drawing device 12, a trimming device 13 for trimming the front and rear ends (X direction) and both sides (Y direction),
The X-direction cleaving device 15, the Y-direction cleaving device 16, the second inspection device 17, the classification robot 18, and the multi-residual-material-removal processing table 19 are arranged in this order. Sorting robot 18
Moves healthy flat glass to a conveyor for downstream processes,
In addition, defective products are moved to the defective product stock box. A walking beam 20 is installed as a carrying line for carrying the plate glass from the positioning device 9 to the Y-direction cutting device 16. A control device 21 for controlling the system 1 is arranged outside the walking beam line 20. In the figure, reference numeral 24 indicates Y for a plate glass.
It is a transfer device for taking out from the direction cutting device 16.

The walking beam 20 is shown in FIG. FIG. 3A shows this walking beam 20.
FIG. 3B is a side view of a transfer line equipped with the above, and FIG. 3B is an enlarged view of the line III-III in FIG. A plurality of beams 201 are arranged horizontally along the transport line. The beam 201 is configured to be reciprocated by a predetermined distance D in the transport direction by a servo motor 202 (indicated by a two-dot chain line in the figure to indicate a forward movement). Specifically, a rack 203 is formed on the lower surface of each beam 201, and is reciprocated by a pinion gear 204 arranged at a position corresponding to each rack (each beam) on the output shaft 202a of the servomotor 202. . This beam 201
The servo motor 202 is mounted on the first mount 205.

The first mount 205 is mounted on the second mount 207 via the lifting device 206. This lifting device 20
6 may be a jack using a hydraulic cylinder or a motor, for example. Then, the entire beam 201 is moved to the lifting device 2
It is raised and lowered together with the first mount 205 by 06. The upper surface of the beam 201, that is, the surface on which the plate glass is placed, is raised when the respective devices 9, 10, 11, 13, 1 are moved.
5 and 16 rise above the plate glass mounting surface (shown by a chain double-dashed line in the figure), and when descending, drop below this plate glass mounting surface (shown by a solid chain line in the figure). The plate glass is moved forward at a predetermined pitch D by the reciprocating motion and the raising and lowering. The second mount 207 may also serve as the mount for each of the above devices. Reference numeral 208 denotes a guide portion for reciprocating motion.

That is, the beam 201 ascends with the plate glass mounted thereon and advances as it is. Then beam 20
When 1 is lowered, the plate glass is placed on the plate glass mounting surface of the apparatus at a position advanced by a predetermined pitch D. This operation is repeated. In this system, the distance between the above devices is the same, and the distance is the same as the pitch. Therefore, a single pitch movement of the beam brings the glazing to the next adjacent device. Of course, the pitch and the inter-device distance may be different as necessary.

The configuration and operation of this system will be described with reference to FIGS. 1 and 4.

In FIG. 4 (b), the flat glass G processed by the present system 1 is shown for each number of product glasses taken out from the glass together with a scribe line. (1) shows a case where one product glass is taken out from one material plate glass G. Therefore, the marking line is only engraved for trimming. (2) shows a case where two product glasses are taken out by cutting in the Y direction.
(3) shows the case where four product glasses are taken out by cutting in the X and Y directions. (4) shows the case where six product glasses are taken out. In (5), after cutting in the Y direction, one glass after cutting is cut in the X direction to take out three product glasses (called multi-cutting).
Indicate the case. The diagram of the plate glass G in FIG.
By associating each device of the present system 1 shown in FIG.

A large number of original glass sheets are housed vertically in the crate 2 so that they can be easily taken out and are not scratched. The glass take-out device 3 sucks the plate glass from the crate 2 by its suction arm and inverts it to take it out, and horizontally puts it on the glass receiving table 6. At this time, the interleaving paper peeling device 4 adsorbs the upper portion of the interleaving paper with the suction bar from the sheet glass extracted from the crate 2 by the glass removing device 3 and then pivots the suction bar to peel off the interleaving paper. From the glass receiving stand 6, the plate glass is conveyed to each downstream process in a horizontal state.

The first inspection device 5 is located above the glass pedestal 6. The first inspection device 5 inspects the plate glass placed on the glass pedestal 6 for the presence or absence of defective marks by scanning the entire surface from above. The inspection result is stored in the control device 21. The inspection result is, for example, that coordinates are set on the entire surface of the plate glass and the position of the defective mark is specified on the coordinates. The defect mark is clearly added in the upstream process so that the position of the flaw can be detected if the flaw is present on the plate glass, for example. Alternatively, the crate 2 may be placed vertically and the entire surface thereof may be scanned and inspected.

After completion of the above-mentioned inspection, the glass transfer device 7 uses a robot or the like arranged therein to adsorb the plate glass by its adsorbing arm to thereby position the positioning device 9.
It is transported on the walking beam 20 on which is installed.
In the positioning device 9, the plate glass is floated, and then the width-adjusting bars (not shown) are moved from both sides toward the center in the width direction at the same speed to position the plate glass with the center as a reference. Or, based on the size data of flat glass,
A method in which the glass transfer device 7 places the plate glass on the walking beam 20 with the central reference may be used.

X once set by the positioning device 9
As for the position in the direction and the Y direction, since the plate glass is transported by the walking beam 20, there is no positional deviation during the transport, and it is not necessary to perform positioning again in the downstream process. Therefore, this positioning is an absolute positioning with respect to all the devices, and the position set here serves as a coordinate reference, and the marking line is marked with the position set by the positioning device 9 as a reference even in the downstream process. It is made and cut. The position of each plate glass set by the positioning device 9 is stored in the control device 21. Walking beam 2
During the transportation to the upper side of 0, the protective film peeling device 8 sucks the suction pad on the protective film on the back surface of the plate glass and separates the protective film to peel the protective film.

In the marking device 10, based on the reference line (or reference point) positioned by the positioning device 9,
A scribing scribe line is engraved at a preset position on the plate glass. The position and the number of marking lines differ depending on how many products are taken out from one plate glass. With respect to the marking device 10, the controller 21 instructs the position of the marking line for each plate glass. The position of the scribe line for each plate glass is previously input to the control device 21. The marking device 10 can position a carriage (not shown), which can run in the X direction and the Y direction, respectively, and a plurality of units (for example, four units) each having a cutter that can be raised and lowered attached to the carriage at required positions. It is composed of the one attached to. When marking the marking lines,
When the plate glass is marked with a defect and the defect mark exists near the periphery of the plate glass, the control device 21 instructs the marking device 10 to change the position of the marking line. That is, the position of the scribing line is instructed so that the position of the defective mark is located in the peripheral portion E (FIG. 2) to be removed by trimming. The marking device 10 moves the marking tool (not shown) to a designated position and marks the marking line. Therefore, in this case, the width of the peripheral edge E is not uniform over the entire circumference of the plate glass. But,
This reduces the incidence of defective products that should be discarded. Further, if there is a defective mark in the central portion of the plate glass and cannot be positioned in the peripheral edge portion E, as will be described later, the control device 21 instructs the sorting robot 18 to transfer it to the defective product stock box. It

The intermediate pedestal 11 is installed in the downstream side adjacent to the engraving device 10, and if necessary, the sheet glass arriving at the intermediate pedestal 11 is pulled out of the line by the pulling device 12. For example, when an abnormality occurs in the downstream process. Therefore, the plate glass passes through this stage during normal operation.

The glass sheet is then conveyed to the trimming device 13, where the front and rear edges of the glass sheet are trimmed along the marking line in the X direction and then along the Y direction along the marking line in the Y direction. Edge trimming is performed.

As shown in FIG. 5, the trimming device 13
Has a cleaving member 14a and a supporting member 14b that can move to the position of the marking line of the plate glass G. The area of the walking beam in the trimming device 13 is smaller in plan view than the plate glass to be cleaved. Therefore, the vicinity of the Y-direction edge of the plate glass G protrudes from the walking beam, and the cleaving member 14a and the supporting member 14b can easily move to the position of the trimming scribe line. The position of the marking line is instructed to the trimming device 13 from the control device 21 as a coordinate position. The supporting member 14a and the cleaving member 14b push both sides of the scribe line of the plate glass G in opposite directions, and apply a bending force to the scribe line to perform the scribe. Specifically, the supporting member 14b supports the lower surface of the plate glass G, and the cleaving member 14a applies a bending force by pushing downward the upper surface of the plate glass G on the opposite side of the scribe line. Further, as shown in the figure, the supporting member 14b is notched in a portion through which the walking beam 20 passes so as not to interfere with the walking beam, and is configured to be movable to an arbitrary position. A similar trimming device is a patent application filed by the applicant of the present application, Japanese Patent Application No. 2001-22104.
Details on No. 7.

In the present embodiment, a pair of a cleaving member and a supporting member is provided on each of the front and rear end sides and both end sides along the Y direction in one stage, but the present invention is not limited to such a configuration. For example, the X-direction trimming device and the Y-direction trimming device may be arranged on two different stages upstream and downstream. That is, in the X-direction trimming device, a pair of a cleaving member and a supporting member is installed on each of the front and rear end sides of one stage, and in the Y-direction trimming device, a cleaving member is provided on each side of the Y direction of a stage different from the X-direction trimming device. The pair with the support member is installed.
Of course, the glass plate is also conveyed between the X-direction trimming device and the Y-direction trimming device by the walking beam so that the position of the glass plate once set does not shift.

The trimmed glass sheet is sent to the X-direction cutting device 15 and cut along the X-direction marking line. Then, the plurality of plate glasses divided into the X direction are sent one by one to the Y direction dividing device 16 by a walking beam. For this reason, the walking beam downstream of the X-direction cutting device 15 divides the driving beam from the walking beam up to the trimming device 13 so that the transporting direction stop position is at three positions, or is stopped at an arbitrary position. It is configured.

Each plate glass is cut by the Y-direction cutting device 16 along the marking line in the Y-direction. Double cutting device 1
Both 5 and 16 have a cleaving member and a supporting member,
The supporting member sucks the lower surface of the glass sheet by the suction pad, and the cleaving member pushes the lower surface of the portion corresponding to the position of the scribe line upward from the lower side of the glass sheet to apply a bending force to cut the sheet.

In the X-direction cutting device 15, the cleaving member and the supporting member extend in a direction crossing the walking beam. Therefore, like the trimming device 13, the support member is notched at a portion through which the walking beam passes, and is configured to be movable to an arbitrary position.

At the downstream of the Y-direction cutting device 16, the process is divided into the above-mentioned plate glass for multi-cutting and the plate glass which is being commercialized. Glass that can be directly commercialized (shown by symbol M in FIG. 4 (b)) is sent to a later-described inspection step and needs to be further cut in the X direction (FIG. 4). (Indicated by a symbol N in (b)) is sent to the multi-residual-materials handling table 19.

A second inspection device 17 is arranged downstream of the Y-direction cutting device 16. Each plate glass divided into the product size and the product size is placed on the glass mounting table of the second inspection device 17 by the second transfer device. The second inspection device 17 is provided above the plate glass placed on the glass placing table.
Scans and inspects each plate glass for defective marks and breaking defects. It is also possible to easily carry out the inspection during the transfer by the second transfer device. Second inspection device 17
A defective product stock box 22 and a conveyer 23 for carrying to the next process are disposed downstream of. Furthermore, a sorting robot 18 for sorting the defective products and the plate glass that can be commercialized from the second inspection device 17 is provided. The inspection result by the second inspection device 17 is transmitted to the control device 21, and the control device 21 sends an operation instruction to the seed sorting robot 18 according to the inspection result. In response to this, the sorting robot 18 selects the defective product from the glass mounting table to the defective product stock box 2
2 and the sound plate glass is transferred to the conveyor 23.

[0038]

As described above, according to the present invention, it is possible to automatically inspect a plate glass for defective products and to perform cutting. Further, since the walking beam is used as the transport line, if the plate glass is positioned upstream thereof, it is not necessary to position it again in the downstream process.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing an embodiment of a plate glass cleaving system of the present invention.

FIG. 2 is a plan view showing a sheet glass to be cleaved by the cleaving system of FIG. 1 together with a marking line thereof.

3 (a) is a side view of a line equipped with a walking beam in the cleaving system of FIG.
(B) is an III-III line enlarged arrow line view of Fig.3 (a).

4 (a) is a block diagram schematically showing the cleaving system of FIG. 1, and FIG. 4 (b) is a schematic diagram showing a glass sheet processed by each device of the cleaving system of FIG. 4 (a). It is a top view.

5 is a perspective view showing an outline of a trimming device in the cleaving system of FIG. 1. FIG.

FIG. 6 is a block diagram showing an example of a conventional sheet glass cutting device.

FIG. 7 is a side view showing a part of a conveyor in the cleaving device of FIG.

[Explanation of symbols]

1 ... Cleaving system 2 ... Crate 3 ··· Glass removal device 4 .... Interleaving paper removing device 5 ... First inspection device 6 ... Glass cradle 7 ... Glass transfer device 8 ... Protective film peeling device ・ ・ ・ Positioning device 10 ··· Engraving device 11 ... Intermediate cradle 12 ... Drawing device 13 ··· Trimming device 14a ... Cleaving member 14b ... Support member 15 ... · Cleaving device in X direction 16 ... Y direction cleaving device 17 ... Second inspection device 18 ... Robots for sorting 19 ... Multi-residual material processing table 20 ... Walking beam 21 ... Control device 22 ··· Defective product stock box 23 ... Conveyor 24 ··· Transfer device 201 ... Beam 202 ··· Servo motor 202a ... Output shaft 203 ... Rack 204 ... Pinion gear 205 ... First mount 206 ··· Lifting device 207 ... Second mount 208 ... ・ Guide section

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Aoki             3-1-1 Higashikawasaki-cho, Chuo-ku, Kobe-shi, Hyogo             No. Kawasaki Heavy Industries, Ltd.Kobe factory (72) Inventor Morishoma Kushita             3-1-1 Higashikawasaki-cho, Chuo-ku, Kobe-shi, Hyogo             No. Kawasaki Heavy Industries, Ltd.Kobe factory F-term (reference) 3C069 AA02 CA11                 4G015 FA01 FA04 FB01 FC02 FC10                       FC11 FC14

Claims (6)

[Claims] 1. A transport line for transporting plate glass, a glass take-out device for placing the plate glass to be processed on the transport line, and a defect of the plate glass arranged in the vicinity of the glass take-out device. The first inspection device for inspecting the sheet glass, the cutting device for cutting the sheet glass along the cutting scribe line engraved on the sheet glass, which is arranged on the conveying line, and the cutting device arranged at the downstream end of the conveying line. It is equipped with a plate glass sorting robot installed and a control device that controls the seed sorting robot based on the inspection result by the first inspection device, and the seed sorting robot sorts the plate glass based on the instruction of the control device. Plate glass cutting system for dividing. 2. The plate glass cleaving system according to claim 1, wherein the conveying line is composed of a walking beam. 3. The plate glass cleaving system according to claim 2, wherein a plate glass positioning device is provided at an upstream end of the conveying line. 4. The plate glass cutting system according to claim 1, wherein the control device is configured to instruct the cutting position of the plate glass by the cutting device based on the inspection result by the first inspection device. 5. A plate glass positioning device is arranged at the upstream end of the conveying line, and a cutting device for cutting a breaking line on the plate glass is arranged downstream of the positioning device. 5. The cleaving of the sheet glass according to claim 4, wherein the control device is configured to instruct the engraving position of the scribe line for cleaving the sheet glass by the engraving device based on the inspection result by the first inspection device. system. 6. A second inspection device for inspecting a defect due to the cutting of the sheet glass is arranged on the upstream side of the classification robot, and the control device is based on the inspection result by the second inspection device. 2. The sheet glass cleaving system according to claim 1, which is configured to control a sorting robot.