KR20130093041A - Cutting line making device for plate-shaped object, cutting line making method for plate-shaped object, producing device for glass plate and producing method for glass plate - Google Patents

Abstract

PURPOSE: A cutting line processing apparatus is provided to process cutting line meeting at right angle on a plate glass by controlling the speed of a cutting process means. CONSTITUTION: A broken line processing apparatus (10) comprises: a cutting line processing means; a driving means; a cutting means; a shape detecting means; an operating means; and a controlling means. The driving means processes cutting line on the plate glass by operating the cutting process means on the surface of the plate glass (G). The cutting means cuts the plate glass according to the cutting line. The shape detecting means detects the shape of the cut plate glass, or the shape of the cutting line. The operating means calculates a squareness of the cutting line, or a squareness of the cutting edge of the plate glass about the sending direction of the plate glass, based on the shape of the cutting line or plate glass. The controlling means changes the running speed of the cutting process means by controlling the driving means in a way that the calculated squareness enters within the allowed value.

Description

CUTTING LINE MAKING DEVICE FOR PLATE-SHAPED OBJECT, CUTTING LINE MAKING METHOD FOR PLATE-SHAPED OBJECT, PRODUCING DEVICE FOR GLASS PLATE AND PRODUCING METHOD FOR GLASS PLATE}

This invention relates to the cutting line processing apparatus of a plate-shaped object, the cutting line processing method of a plate-shaped object, the manufacturing apparatus of a glass plate, and the manufacturing method of a glass plate.

As a manufacturing method of the glass plate used for the glass substrate for flat panel displays (FPD), a glass plate for building, etc., the manufacturing method called the float method disclosed by patent document 1 etc. is known. This float method flows molten glass onto tin in a molten tin bath, spreads the molten glass to equilibrium thickness on tin to form a glass ribbon, and finally forms a strip-shaped glass plate having a predetermined plate thickness. It is quite a recipe.

The strip-shaped glass plate formed in the molten tin bath is drawn out to the slow cooling section provided downstream of the molten tin bath, and after being cooled to a predetermined temperature (room temperature), is continuously conveyed to the bending cutting device by a conveying means such as a roller conveyor. And cut into glass plates of the desired size. The cut glass plate is conveyed to a predetermined storage part by a roller conveyor, and it is accommodated by a pallet etc. one by one here and taken out as a product or an intermediate product.

The said bending cutting device disclosed in patent document 2 is comprised from the cutting line processing apparatus (also called a break line processing apparatus or a cutting line processing apparatus) provided in the conveyance direction upstream of a strip | belt-shaped glass plate, and the bending apparatus provided in the conveyance direction downstream. . Moreover, the said cutting line processing apparatus is comprised by the vertical cutting machine provided in the conveyance direction upstream of the strip-shaped glass plate, and the horizontal cutting machine provided in the downstream side, and conveys a strip | belt-shaped glass plate by cutters, such as a wheel cutter of a vertical cutting machine. The longitudinal cutting line parallel to the direction is processed on the surface of the strip-shaped glass plate, and the horizontal cutting line orthogonal to the conveying direction of the strip-shaped glass plate by a cutter such as a wheel cutter of the transverse cutting machine on the downstream side thereof. To process.

The cutter which processes the said horizontal cutting line is supported by the guide frame so that a run is possible, and this guide frame inclines angle (theta) in the conveyance direction downstream with respect to the direction orthogonal to the conveyance direction of the strip-shaped glass plate conveyed at the conveyance speed v. Placed in a lean position. The cutter is run-controlled at a speed w (w = v / cosθ) along the guide frame by a drive unit such as a servo motor. Thereby, the horizontal cutting line orthogonal to a conveyance direction is processed by the cutter on the surface of a strip | belt-shaped glass plate.

The cutting process method by the said cutter is a method called size cutting, and is performed for the purpose of taking out the board | substrate of several glass plates of different sizes at a time without waste from the strip | belt-shaped glass plate cooled by the slow cooling part at once. In this cutting method, a plurality of vertical cutting machines are provided in parallel, and a horizontal cutting machine is installed downstream of the vertical cutting machine to start / stop control of cutting operation of the cutter of each cutting machine (for example, Motion control synchronized with the conveyance speed of a shape glass plate), and it is a method of processing the cutting line for taking out the glass plate of several desired size from the strip-shaped glass plate in conveyance to a strip | belt-shaped glass plate.

In the cutting process method of the said difference size cutting, it is necessary to control the cutting process start time of a cutter finely, and the conveyance speed of a strip | belt-shaped glass plate is detected by it. As a detection apparatus of the said conveyance speed, the conveyance amount detection apparatus which contacts a roller with a strip | belt-shaped glass plate in conveyance, and detects a conveyance speed based on the rotation amount of the said roller which rotates following the conveyance of a strip | belt-shaped glass plate is known.

The conveying amount detecting device detects the rotational amount of the roller by the encoder, and counts the number of pulses output from the encoder by the pulse counter. And when the counted pulse number becomes the predetermined pulse number previously memorize | stored as a cutting process start time, a control part controls the drive part of a cutter to start cutting process by a cutter.

Moreover, the said roller is comprised from the metal roller main body and the sheet | seat made of the rubber | gum or resin which was lined by the outer peripheral surface of this roller main body. This sheet serves as a shock absorbing material and prevents scratches due to roller contact on the surface of the strip-shaped glass plate.

Japanese Patent Laid-Open No. 8-277131 International Publication No. 2008/136239

However, in the conventional conveying amount detecting apparatus, the rollers undergo thermal expansion and contraction in accordance with the fluctuations in the ambient temperature, and the diameter and angular velocity of the rollers change. For this reason, since the rotation amount of a roller fluctuates, it was difficult to detect the conveyance speed v of plate-shaped object correctly.

Therefore, even if the speed w (w = v / cos (theta)) of the cutter was controlled as mentioned above, there existed a problem that transverse cutting lines orthogonal to a conveyance direction could not be processed on the surface of a strip-shaped glass plate. That is, since the actual horizontal cutting line inclines with respect to the predetermined horizontal cutting line orthogonal to a conveyance direction, the perpendicularity of the actual horizontal cutting line with respect to the conveyance direction of a strip | belt-shaped glass plate may deviate from an allowance.

Squareness is also defined in the Machine Tool-Test and Inspection Terms in JIS B 0182 (enacted in 1993). The perpendicularity described in this specification defines one line among the two lines mentioned in the said definition as the line along the conveyance direction of a strip | belt-shaped glass plate, and makes it the perpendicularity at the time of defining the other line as an actual horizontal cut line.

This invention is made | formed in view of such a situation, and provides the cutting apparatus of the plate-shaped object which can cut-and-cut and cut-process a plate-shaped object with high dimensional precision, the manufacturing method of the plate-shaped object of a plate, and the manufacturing apparatus of a glass plate, and the manufacturing method of a glass plate. It aims to do it.

In order to achieve the above object, the present invention provides a cutting line on the surface of the plate-like object by running the cutting line processing means and the cutting line-processing means on the surface of the plate-like object in a direction inclined at a predetermined angle with respect to the conveying direction of the plate-like object being conveyed. The drive means to process, the cutting means which cut | disconnects the said plate-shaped object along the said cutting line, the shape of the said plate-shaped object cut | disconnected by the said cutting means, or the shape which the cutting line of the said plate-shaped object cut-off by the said cutting line processing means forms. Perpendicularity to the cutting edge of the plate-like object with respect to the conveying direction of the plate-like object based on the shape detecting means for detecting the shape of the plate-shaped object detected by the shape detecting means and the shape of the cut line of the plate-shaped object. Or calculation means for calculating a squareness of the cut line of the plate-shaped object and the calculation means It said right angle also provides a substrate processing apparatus jeolseon water provided by controlling the drive means to fall within the limit and control means for changing the running speed of the jeolseon operation unit.

The present invention, in order to achieve the above object, by cutting the cutting line processing means on the surface of the plate-like object by a driving means in a direction inclined at a predetermined angle with respect to the conveying direction of the plate-like object being conveyed, A cutting process for cutting the plate-like object along the cutting line by a cutting line process, a shape of the plate-shaped object cut by the cutting means, or a cutting line of the plate-shaped object cut off by the cutting line processing means Based on the shape detection process which detects the shape to form, the shape of the said plate-shaped object detected by the said shape detection process, or the shape formed by the cut line of the said plate-shaped object, the cut edge part of the said plate-shaped object with respect to the conveyance direction of the said plate-shaped object An arithmetic step of calculating a right angle or a right angle of the cut line of the plate-shaped object, and the number of operations There is provided a cutting method for cutting a plate-like object having a speed control step of controlling the drive means by a control means to change the traveling speed of the cutting line processing means so that the squareness calculated by the stage falls within an allowable value.

According to the present invention, the shape detecting means (shape detecting step) detects the shape of the plate or the shape formed by the cutting line, and the calculation means (calculation step) calculates the perpendicularity of the cutting edge or the cutting line with respect to the conveying direction of the plate. do. And when the computed squareness deviates from an allowable value, a drive means is controlled by a control means (speed control process) so that it may fall within the said allowable value, and the traveling speed of a cutting line processing means is changed.

That is, this invention feedback-controls the speed of a cutting process means based on the squareness of the actual cutting edge part or cutting line with respect to the conveyance direction of a plate-shaped object. Thereby, according to this invention, since the cutting line orthogonal to the conveyance direction of a plate-shaped object can be processed on the surface of a plate-shaped object, cutting and cutting process of a plate-shaped object can be carried out with high dimensional precision.

The said allowable value is a value according to the product specification of the plate-shaped object cut | disconnected along a cutting line and commercialized. If the perpendicularity is within the allowable value, the cutting line orthogonal to the conveyance direction of a plate-shaped thing shall be processed.

The shape detecting means of the present invention is an image pickup means for picking up the plate-shaped object, and the calculating means calculates a squareness of the cut edge portion or the cut line based on the image information of the plate-shaped image picked up by the image pickup means. desirable.

In the shape detecting step of the present invention, the plate-shaped object is picked up by an image pickup means, and the calculation step calculates a squareness of the cut edge portion or the cut line based on the image information of the plate-shaped image picked up by the image pickup means. It is preferable.

In the present invention, the imaging means is illustrated as the shape detecting means. This imaging means is provided with imaging elements, such as CCD and CMOS, which image-photograph a plate-shaped object. The image processing part which image-processes the image picked up by the said imaging element is provided with a calculation means. The image processing unit is composed of, for example, a microcomputer including a CPU, a RAM, a ROM, and the like. In addition, the image processing unit detects the shape (cutting edge, cut line) and size of the plate-like object by image-processing the image picked up by the imaging element and specifying a location where the brightness of the image changes abruptly.

Moreover, the following means are also illustrated as shape detection means. For example, laser displacement meters and contact linear gauge sensors can also be used. In the laser displacement meter, if the sensor is a type that transmits the sheet-shaped laser beam and detects the light amount of the light receiving portion, the edge of the cut plate can be detected, and the shape of the plate can be detected. In the case where the shape detecting means is a sensor, it is difficult to detect the shape of the cut or cut plate, and thus four corners of the plate are detected by a total of eight sensors arranged in two each of one side of the plate. It is preferable to detect the shape of the plate-shaped object from its four corners. This is because, in the case of the sensor, it is not identified as an area but is identified by a point or a line. That is, since the corner part itself of a plate-shaped object cannot be detected with a sheet-shaped laser beam, two points of the edge of one side of a plate-shaped object are detected using two sensors with respect to one side of a plate-shaped object, and two points from the two points The straight line passing through is obtained, and the corner part of a plate-like object is calculated | required from the virtual intersection of the straight lines of two adjacent sides. Therefore, two sensors, eight in total, are needed for one side of a plate-shaped object.

Moreover, this invention provides the manufacturing apparatus of the glass plate provided with the cutting line processing apparatus of the plate-shaped object of this invention, in order to achieve the said objective.

Moreover, this invention provides the manufacturing method of the glass plate provided with the cutting line processing method of the plate-shaped object of this invention, in order to achieve the said objective.

According to the manufacturing apparatus of the glass plate of this invention, and the manufacturing method of a glass plate, a glass plate can be cut and cut with high dimensional precision.

Further, Patent Document 2 and Japanese Patent Application Laid-Open No. 2009-107897 disclose that a cutting line orthogonal to the conveying direction of the plate-shaped object is processed by running a cutting line processing means in synchronization with the conveying speed of the plate-shaped object. On the other hand, this invention is the invention which processes the cutting line orthogonal to the conveyance direction of a plate-shaped object on the surface of a plate-shaped object by feedback-controlling the speed of a cutting process means based on the cutting edge part with respect to the conveyance direction of a plate-shaped object, and a cutting line. to be. Therefore, patent document 2 and Unexamined-Japanese-Patent No. 2009-107897 announce that the characteristic of this invention is not described.

According to the cutting line processing apparatus of the plate-shaped object of this invention, the cutting line processing method of a plate-like thing, and the manufacturing apparatus of a glass plate, and the manufacturing method of a glass plate, it can cut and plate-process a plate-shaped object and a glass plate with high dimensional precision.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the principal part of the cutting line processing apparatus which concerns on embodiment.
FIG. 2 is a plan view of the cutting line processing device shown in FIG. 1. FIG.
3 is a block diagram showing the configuration of a cutting line processing apparatus of the embodiment;
4 is an explanatory diagram showing a cutting edge photographed by an electronic camera;
The perspective view of the cutting line processing apparatus of other embodiment.
FIG. 6 is a plan view of the cutting line processing device shown in FIG. 5. FIG.

EMBODIMENT OF THE INVENTION Hereinafter, according to an accompanying drawing, preferable embodiment of the cutting method of the plate-shaped object of this invention, the cutting method of the plate-shaped object, and the manufacturing apparatus of a glass plate, and the manufacturing method of a glass plate are explained in full detail.

1: is a perspective view which shows the principal part of the cutting line processing apparatus 10 of strip | belt-shaped glass plate (plate-shaped object) G to which the cutting line processing apparatus of the plate-shaped object of embodiment was applied. FIG. 2 is a plan view of the cutting line processing device 10 shown in FIG. 1.

The cutting line processing apparatus 10 shown to FIG. 1, FIG. 2 is a strip-shaped glass plate manufacturing apparatus (not shown) by the float method provided with the molten-glass manufacturing apparatus provided in the conveyance direction upstream of the strip | belt-shaped glass plate G. FIG. The so-called phase which processes a longitudinal cutting line and a horizontal cutting line to the strip | belt-shaped glass plate G continuously conveyed in the arrow A direction by the roller conveyor 12 is a cutting line processing apparatus corresponding to the cutting line processing method called size cutting.

The manufacturing method of the glass plate by the manufacturing apparatus of the glass plate of embodiment to which embodiment is applied is a glass melting process by the said molten glass manufacturing apparatus, the shaping | molding process of shape | molding molten glass to a strip-shaped glass plate, and slow-cooling the said strip-shaped glass plate. The slow cooling process, the cutting process of cutting a strip | belt-shaped glass plate along a cutting line while processing a cutting line by the cutting line processing apparatus of embodiment, the chamfering process of chamfering the edge of the cut glass plate, and the grinding | polishing process of grinding the principal surface of the chamfered glass plate. And a packing step of packing the polished glass plate. In addition, when the glass plate to be packaged is an intermediate product, the chamfering step and the polishing step are not performed, and the process proceeds from the cutting step to the packing step.

The cutting amount processing apparatus 10 is equipped with the conveyance amount detection apparatus 100. The conveyance amount detection apparatus 100 is provided with the roller 102 which contacts on the surface of the strip | belt-shaped glass plate G, and follows the rotation of the strip | belt-shaped glass plate G, and rotates. Each cutter of the cutting line processing apparatus 10 is basically controlled based on the conveyance amount (conveying speed v) of the strip-shaped glass plate G detected by the conveyance amount detection apparatus 100. However, it is difficult to accurately detect the actual conveyance amount (conveying speed v) by the conveyance amount detection apparatus 100 as described above, and the cutting line processing apparatus 10 of the embodiment solves such a problem. This will be described later.

The bending device 52 (cutting means) is provided in the conveyance direction downstream of the strip | belt-shaped glass plate G of the cutting line processing apparatus 10, and the glass plate cut | disconnected by the bending device 52 at the rear end of the bending device 52 ( G is _a) not allocated to the conveying portion according to the size receiving roller conveyor (shown that the sampled version) are provided.

Moreover, the said roller conveyor which distributes and conveys the conveyance amount detection apparatus 100, the said strip-shaped glass plate manufacturing apparatus, the said roller conveyor, the folding device 52, and the cut | disconnected glass plate G _A to a receiving part, and the strip | belt using them The manufacturing apparatus of a shaped glass plate is the same as a well-known technique. In addition, the strip | belt-shaped glass plate G of embodiment may be used for the glass substrate for FPD, and may be used for the glass plate for solar cells, the glass plate for illumination, the glass plate for building, or the glass plate for automobile windows. In addition, the plate-shaped object made into the object is not limited to strip | belt-shaped glass plate G, A rectangular glass plate may be sufficient as it. The material of a plate-shaped object is not limited, either, The cutting line processing apparatus 10 of embodiment can be applied as long as it is a plate-shaped object which cuts | disconnects while conveying continuously to a plate-shaped object made of resin or a metal. In addition, the manufacturing apparatus of strip | belt-shaped glass plate G is not limited to the manufacturing apparatus by the float method, Other manufacturing apparatuses, such as a fusion method, may be sufficient.

In addition, although the cutting line processing apparatus 10 of embodiment is an apparatus which performs size size cutting, it is not limited to size cutting. That is, if it is a cutting line processing apparatus which can improve the dimensional accuracy of the glass plate in the conveyance direction A of the strip | belt-shaped glass plate G, the cutting line processing apparatus which processes only what is called a horizontal cutting line on the surface of the strip-shaped glass plate G (FIG. 1). Can also be applied to a cutting line processing device provided with only the horizontal cutting line machine 16). Therefore, the cutting line processing apparatus 10 which differs in size cutting is an example to the last.

The cutting line processing apparatus 10 is comprised from the vertical cutting line processing machine 14 provided in the conveyance direction upstream of the strip | belt-shaped glass plate G, and the horizontal cutting line processing machine 16 provided in the conveyance direction downstream. The longitudinal cutting line parallel to the conveyance direction of the strip-shaped glass plate G is processed by this longitudinal cutting machine 14, and it is processed by the horizontal cutting line machine 16 by the horizontal cutting line machine 16 in the downstream side of the strip-shaped glass plate G. The horizontal cutting line orthogonal to a conveyance direction is processed to strip | belt-shaped glass plate G.

The longitudinal cutting machine 14 is equipped with the several cutter 18,18 ... provided in the width direction of the strip | belt-shaped glass plate G. As shown in FIG. These cutters 18 and 18 are moved forwards and backwards by the well-known forward and backward movement means with respect to the strip | belt-shaped glass plate G conveyed by the roller conveyor 12, and the strip | belt-shaped glass plate G by moving forward. Is pressed to a predetermined pressing force. Thereby, the vertical cutting line parallel to the conveyance direction of strip | belt-shaped glass plate G is processed to strip | belt-shaped glass plate G. FIG.

On the other hand, the horizontal cutting machine 16 is equipped with one cutter (cutting means) 20. This cutter 20 is supported by the guide frame 26 provided above the conveyance path of the strip | belt-shaped glass plate G so that a run is possible, and this guide frame 26 is carried in the conveyance direction A of the strip | belt-shaped glass plate G. It is arranged inclined with respect to a predetermined angle. Horizontal cutter (cutting line) in a direction orthogonal to the conveying direction of the strip-shaped glass plate G by cutting the cutter 20 at an angle to the conveying direction of the strip-shaped glass plate G in synchronization with the conveying speed of the strip-shaped glass plate G. ) Is processed on the surface of the strip-shaped glass plate G. In addition, the speed control of the cutter 20 which is a characteristic of this invention is mentioned later.

3 is a block diagram showing the configuration of the cutting line processing apparatus 10 of the embodiment. As shown in FIG. 3, the servo motor 22 (drive means) which drives the cutter 20 is motion-controlled by the control apparatus (control means) 24. As shown in FIG. The control device 24 controls the servo motor 22 based on the conveying speed of the strip-shaped glass plate G output from the conveying amount detecting device 100, thereby basically controlling the traveling speed of the cutter 20. The control apparatus 24 of the embodiment changes the running speed of the cutter 20 by feedback-controlling the servomotor 22 based on the perpendicularity mentioned later. That is, the traveling distance of the cutter 20 which runs per pulse output from the encoder (not shown) of the conveyance amount detection apparatus 100 is changed. Thereby, the horizontal cutting line of the direction orthogonal to the conveyance direction of strip | belt-shaped glass plate G is processed on the surface of strip | belt-shaped glass plate G. FIG.

Moreover, the cutter 20 is provided so that it may move up and down with respect to the strip | belt-shaped glass plate G by actuators, such as an air cylinder. By this actuator, the cutter 20 starts lowering in advance in the predetermined amount front position of the cutting start end part, in order to process the horizontal cutting line of a favorable cutting depth. Subsequently, the cutter 20 travels on the surface of the strip-shaped glass plate G along the guide frame 26 by the driving force of the servomotor 22, as shown by the solid line in FIG. 2. Thereby, a horizontal cutting line is processed on the surface of strip | belt-shaped glass plate G. Thereafter, the cutter 20 is moved upwardly from the strip-shaped glass plate G by the actuator after passing the cut line end portion by a predetermined amount, and then the servo 20 is moved to the original cut line standby position (the position shown by the solid line in FIG. 1). It is moved back by the motor 22.

On the other hand, the advancing and moving means of the cutter 18 is provided with the servo motor 28 as shown in FIG. 3, and this servo motor 28 and the cutter 18 are not shown in FIG. The guide frame 30 is provided at predetermined intervals. This guide frame 30 is provided over the roller conveyor 12, and is provided in the direction orthogonal to the conveyance direction of strip | belt-shaped glass plate G. As shown in FIG. Further, the ball screw device as the conveying means is provided in the hollow guide frame 30, and the ball screw device is driven so that the cutter 18 moves forward and backward in the horizontal slit 32 formed in the guide frame 30. The slide is moved through the moving means. Thereby, the position of the cutter 18 of the direction orthogonal to the conveyance direction of strip | belt-shaped glass plate G is adjusted.

The servo motor 28 of FIG. 3 moves the cutter 18 downward in order to process a longitudinal cutting line to the strip-shaped glass plate G, and produces the pressing force with respect to the strip-shaped glass plate G. As shown in FIG. The torque of the servo motor 28 is controlled by the control device 24 via the servo amplifier 34.

In addition, the control apparatus 24 moves forward and backward of the cutter 18 by the servomotor 28 based on the conveyance amount (conveying speed v) of the strip | belt-shaped glass plate G obtained by the conveyance amount detection apparatus 100. FIG. The timing is controlled, and the timing at which the cutting process of the cutter 20 is started by the servo motor 22 is controlled.

By the way, in the cutting line processing apparatus 10 of embodiment, as shown to FIG. 1, 2, the electronic camera (shape detection means) 42 is provided above the downstream of the bending apparatus 52. As shown in FIG. The electronic camera 42 images the glass plate G _A including the cutting edge portion 54 cut along the cutting line from the strip-shaped glass plate G by the folding device 52.

In addition, as shown in FIG. 3, the cutting line processing apparatus 10 of embodiment is a cutting edge part imaged by the electronic camera 42 with respect to the conveyance direction A (refer FIG. 1, 2) of strip | belt-shaped glass plate G. Moreover, as shown in FIG. An arithmetic device (calculation means) 44 for calculating the squareness of 54 is provided. The control device 24 has a function of changing the traveling speed of the cutter 20 by feedback-controlling the servo motor 22 so that the perpendicularity calculated by the computing device 44 falls within the allowable value.

The electronic camera 42 is controlled by the control apparatus 24 so that the cutting edge part 54 shown in FIG. 1 may image the cutting edge part 54 at the timing which passes below the electronic camera 42.

The image signal including the cutting edge portion 54 picked up by the electronic camera 42 is binarized by the arithmetic unit 44 shown in Fig. 3, and only the image of the cutting edge portion 54 is extracted from the whole image. do. The computing device 44 calculates the perpendicularity of the cutting edge part 54 with respect to the conveyance direction A of strip | belt-shaped glass plate G based on the image of the cutting edge part 54. As shown in FIG.

FIG. 4 is an explanatory view showing a part of the glass plate G _A including the cutting edge portion 54 picked up by the electronic camera 42, and the image of the cutting edge portion 54 picked up by the electronic camera 42 is an electron. The image area 48 of the camera 42 is shown.

In addition, while the predetermined cutting edge part 50 which cross | intersects perpendicularly with respect to the conveyance direction A of the strip | belt-shaped glass plate G is shown by the dashed-dotted line, the actual cutting edge part 54 is a predetermined cutting edge part ( It is shown that it inclines toward the conveyance direction A side with respect to 50). This means that the conveyance speed of the strip | belt-shaped glass plate G computed by the conveyance amount detection apparatus 100 is faster than an actual conveyance speed. That is, since the traveling speed of the cutter 20 was set according to the said conveyance speed with the error calculated by the conveyed quantity detection apparatus 100, the traveling speed of the cutter 20 is set to the predetermined traveling speed (cutting edge part ( The actual cut edge portion 54 is inclined toward the conveyance direction A side with respect to the predetermined cut edge portion 50 because 54 is set higher than the speed perpendicular to the conveyance direction A).

Therefore, in order to make the actual cutting edge portion 54 fall within the allowable value for the predetermined cutting edge portion 50, it is necessary to change the traveling speed of the cutter 20 at a low speed.

Thus, the computing device 44 in FIG. 3 is based on the image of the cut line 40 binarized, as shown in FIG. 4, the cut start end 54A and the predetermined cut edge 50 of the image of the cut edge 54. ), The distance a (the conveying direction A) between the cut end portion 54B of the image of the cut edge portion 54 and the cut end portion 50B of the predetermined cut edge portion 50 in a state where the cut start ends 50A are joined together. The distance a) parallel to is calculated based on the number of pixels existing between the cut end portion 54B of the cut edge portion 54 and the cut end portion 50B of the predetermined cut edge portion 50. That is, since the dimension corresponding to one pixel of the electronic camera 42 is memorize | stored in the computing device 44, the distance a can be calculated. Then, the arithmetic unit 44, the distance a and the glass sheet (G _A), the width of the inclination angle θ of the dimension L cutting edge 54 for a given cutting edge 50 on the basis of the (known already) tanθ a = a / It calculates from the formula of L, and outputs the information which shows the inclination-angle (theta) to the control apparatus 24 of FIG.

The method of calculating the said distance a based on the said pixel number is an example, As another method, it can also calculate using the shape measuring apparatus of the glass plate disclosed by international publication 2010/095551. The said shape measuring device is equipped with four electronic cameras arrange | positioned corresponding to four corners of a glass plate, and the storage means which stores the relative coordinates of each of the four electronic cameras. In addition, the said shape measuring device measures the external shape of the glass plate conveyed so that a shape measurement section may be passed.

The measuring method by the said shape measuring apparatus is a step of determining whether the said glass plate has reached the said measurement section, and when it is determined that the said glass plate has reached the said measurement section, the said measurement section by the said four electronic cameras. Imaging an image including corner portions of each of the four corners of the glass plate that has reached the step; calculating corner post coordinates that are coordinate values from an image origin of each of the four corners of the glass plate based on the captured image; And calculating a length dimension of each of the four sides of the glass plate based on the calculated corner post coordinates of the glass plate and the relative coordinates stored in the storage means, the calculated corner post coordinates, and relative coordinates stored in the storage means. And calculating a squareness of each of the four corners of the glass plate based on the calculated length dimension. have.

In the storage unit (not shown) of the control device 24, the allowable value of the squareness is stored. The control device 24 determines whether the input inclination angle θ or the calculated right angle is within the tolerance of the right angle, and if it is within the tolerance, does not change the control of the servo motor 22, and if it is outside the tolerance, Change the control for the motor 22. That is, the control apparatus 24 changes the traveling speed of the cutter 20 to low speed by feedback-controlling the servomotor 22 so that the inclination-angle (theta) may fall within the tolerance value of the said rectangular degree. For example, the running speed of the cutter 20 according to the inclination angle of the cutting edge part 54 with respect to the predetermined cutting edge part 50 is memorize | stored in the control apparatus 24, and the said driving | running angle becomes theoretically 0 degree | times. The servo motor 22 is controlled on the high speed side or the low speed side so as to be the speed, and the running speed of the cutter 20 is changed. That is, the control apparatus 24 changes the travel distance of the cutter 20 which travels per pulse output from the encoder (not shown) of the conveyance amount detection apparatus 100.

Thereby, according to the cutting line processing apparatus 10 of embodiment, since the cutting edge part 54 is orthogonal to the conveyance direction A of the strip | belt-shaped glass plate G, the strip | belt-shaped glass plate G can be cut-processed with high dimensional precision. have.

In addition, when the conveyance speed of the strip | belt-shaped glass plate G calculated by the conveyance amount detection apparatus 100 is lower than a real conveyance speed, the actual cutting edge part 54 will be made with respect to the predetermined cutting edge part 50. It is inclined in the opposite direction to the conveying direction A side. In this case, the control apparatus 24 changes the traveling speed of the cutter 20 to high speed by feedback-controlling the servomotor 22 so that the inclination-angle (theta) at that time may fall within the tolerance value of the said squareness.

Although the said embodiment feedback-controls the traveling speed of the cutter 20 based on the squareness of the cutting edge part 54, it feedback-controls the traveling speed of the cutter 20 based on the squareness of the cutting line 40 before cutting | disconnection. You may also Also in this case, the same effect can be obtained.

FIG. 5: is a perspective view of the cutting line processing apparatus 10A which feedback-controls the traveling speed of the cutter 20 based on the perpendicularity of the cutting line 40. FIG. FIG. 6 is a plan view of the cutting line processing apparatus 10A shown in FIG. 5. In addition, in the cutting line processing apparatus 10A of FIG. 5, FIG. 6, the same code | symbol is attached | subjected about the member similar to or similar to the cutting line processing apparatus 10 shown in FIGS. 1-4, and the description is abbreviate | omitted.

As for the cutting line processing apparatus 10A shown in FIG. 5, FIG. 6, the electronic camera 42 is provided above the cutter 20 downstream. The electronic camera 42 captures a part of the strip-shaped glass plate G including the cutting line 40 processed by the cutter 20 on the surface of the strip-shaped glass plate G. The inclination angle of the cutting line 40 with respect to the conveyance direction A of the strip | belt-shaped glass plate G, and the feedback control method of the traveling speed of the cutter 20 by the control apparatus 24 based on this inclination angle are FIGS. It is similar to the cutting line processing apparatus 10 shown in FIG.

That is, the calculation process of calculating the perpendicularity of the cutting line 40 picked up by the electronic camera 42 with respect to the conveyance direction A of the strip | belt-shaped glass plate G, by the arithmetic unit 44 (refer FIG. 3), The speed control process of changing the running speed of the cutter 20 by controlling the servo motor 22 by the control apparatus 24 so that the said squareness calculated by the calculating device 44 may be within the tolerance value is provided.

Therefore, since the cutting line 40 orthogonal to the conveyance direction A of the strip | belt-shaped glass plate G can be processed in the cutting line processing apparatus 10A shown in FIG. 5, FIG. 6, the strip | belt-shaped glass plate G is highly dimensioned. Can cut line with precision.

Moreover, in embodiment, the electronic camera 42 is illustrated as a shape detection means. The electronic camera 42 is provided with imaging elements, such as CCD and CMOS, which image | photograph the strip | belt-shaped glass plate G. As shown in FIG. An arithmetic unit 44 is provided in the image processing unit which performs image processing on the image picked up by the imaging device. The image processing unit is composed of, for example, a microcomputer including a CPU, a RAM, a ROM, and the like. Moreover, the image processing part detects the shape (cutting edge part 54, the cutting line 40) and size of a glass plate by image-processing the image picked up by the imaging element, and specifying the location where the brightness of an image changes abruptly.

Moreover, the following means are also illustrated as shape detection means. For example, a laser displacement meter and a contact type linear gauge sensor can also be used. In the said laser displacement meter, if it is a sensor of the type which permeate | transmits a sheet-shaped laser beam and detects the light quantity of a light-receiving part, the edge detection of the cut glass plate is possible, and the shape of a glass plate can be detected.

Regarding the contact type linear gauge sensor, when the sensor is brought into contact with the main surface (the surface on which the cutting line 40 is processed) of the strip-shaped glass plate G, the sensor reacts when there is no cutting line (groove) 40. However, when there is a cutting line (groove) 40, the sensor reacts due to the step of the cutting line (groove) 40, so that it is possible to detect the presence or absence of the cutting line 40, and the conveying direction of the cutting line 40. The inclination angle with respect to A and the distance between the cutting lines 40 and 40 can be detected.

In addition, when the shape detecting means is a sensor, since the shape detection of the cut or cut lined glass plate is difficult in one unit, four corners of the glass plate are detected by a total of eight sensors arranged in two at each side of the glass plate. It is preferable to detect the shape of a glass plate from its four corners. This is because, in the case of the sensor, it is not identified as an area but is identified by a point or a line. That is, since the corner part of a glass plate itself cannot be detected by sheet-shaped laser beam, two points of the edge of one side of a glass plate are detected using two sensors with respect to one side of a glass plate, and two points from two points of the glass plate are detected. The straight line passing through is obtained, and the corner part of a glass plate is calculated | required from the virtual intersection of the straight lines of two adjacent sides. Therefore, two sensors, eight in total, are needed for one side of a glass plate.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment. Various modifications and substitutions can be made to the above embodiments without departing from the scope of the invention.

This application is based on the JP Patent application 2012-028781 of an application on February 13, 2012, The content is taken in here as a reference.

G strip glass plate
10, 10A cutting line processing device
12 roller conveyor
14 longitudinal cutting machine
16 horizontal cutting machine
18 cutter
20 cutter
22 servo motor
24 control unit
26 guide frame
28 servo motor
30 guide frames
32 slits
34 servo amplifier
40 cutting lines
42 electronic camera
44 computing device
48 image area
50 predetermined cutting edges
52 folding device
54 cutting edges
100 conveying quantity detection device
102 rollers

Claims (6)

Cutting line means,
Drive means for processing the cutting line on the surface of the plate-shaped object by running the cutting line processing means on the surface of the plate-shaped object in a direction inclined at a predetermined angle with respect to the conveying direction of the plate-shaped object being conveyed;
Cutting means for cutting the plate-like article along the cutting line;
Shape detecting means for detecting a shape formed by the cutting of the plate-shaped object cut by the cutting means or the cutting line of the plate-shaped object cut by the cutting line processing means;
Based on the shape of the plate-shaped object detected by the shape detecting means or the shape formed by the cutting line of the plate-shaped object, the perpendicularity of the cut edge of the plate-like object or the perpendicularity of the cutting line of the plate-shaped object with respect to the conveying direction of the plate-shaped object is determined. Calculating means for calculating,
Control means for changing the traveling speed of the cutting line processing means by controlling the drive means so that the perpendicularity calculated by the calculation means falls within an allowable value;
Cutting line processing apparatus of the plate-shaped thing provided with. The said shape detection means is an imaging means which image | photographs the said plate-shaped object, The said calculation means is based on the image information of the said plate-shaped object image | photographed by the said imaging means, The perpendicular | vertical angle of the said cutting edge part or the said cutting line is carried out. Cutting line processing device of plate-like thing to calculate. A cutting line processing step of processing a cutting line on the surface of the plate-shaped object by running the cutting line processing means on the surface of the plate-shaped object by a driving means in a direction inclined at a predetermined angle with respect to the conveying direction of the plate-shaped object being conveyed;
A cutting step of cutting the plate-like article along the cutting line by cutting means;
A shape detecting step of detecting a shape formed by the cutting of the plate-shaped object cut by the cutting means or the cutting line of the plate-shaped object cut by the cutting line processing means;
Based on the shape of the plate-like object detected by the shape detection step or the shape formed by the cut line of the plate-like object, the perpendicularity of the cut edge of the plate-like object or the perpendicularity of the cut line of the plate-like object to the conveying direction of the plate-like object is determined. Calculation process to calculate,
A speed control step of changing the traveling speed of the cutting line processing means by controlling the drive means by a control means so that the perpendicularity calculated by the calculation means falls within an allowable value.
Cutting line processing method of the plate-shaped thing provided with. The said shape detection process is image | photographing the said plate-shaped object by an imaging means, The said calculation process is the perpendicularity of the said cutting edge part or the said cutting line based on the image information of the said plate-shaped object image | photographed by the said imaging means. Cutting line processing method of plate-like thing to calculate. The manufacturing apparatus of the glass plate provided with the cutting line processing apparatus of the plate-shaped thing of Claim 1 or 2. The manufacturing method of the glass plate provided with the cutting line processing method of the plate-shaped thing of Claim 3 or 4.

Images