JP2012001384A - Method and apparatus for processing glass plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and apparatus for processing a glass plate, which enable the tact time of the production of the glass plate to be shortened and the production cost per one product to be reduced as a result, and further enable handling of the glass plate to be simplified while reducing production equipment and reducing installation space or the like as much as possible.SOLUTION: The method for processing a glass plate comprises cutting one large-sized glass plate Ga and then grinding and polishing the resulting cut glass plates thereby producing a plurality of small glass plates Gd. In the method, first, the large-sized glass plate Ga is cut into a plurality of small glass plates Gc by a first scribe head 14a and a first bending mechanism 14b or the like, then the plurality of cut small glass plates Gc are simultaneously transferred by a magazine rack 4, and the plurality of transferred small glass plates Gc are simultaneously ground and polished by a grinding device 3 having a larger number of processing stages 31 than those of the first scribe head 14a or the like.

Description

  The present invention relates to a glass plate processing method and a processing apparatus therefor, and more specifically, to a glass plate processing method and a processing apparatus for dividing a large glass plate into small glass plates.

  Conventionally, a small piece of thin glass used for a liquid crystal monitor of a portable terminal or the like is produced by cutting a large glass plate into a plurality of small glass plates. Specifically, a single large glass plate is scribed (cut line is engraved) to the size to be cut, the large size is broken (cut) along the scribe line, and then the peripheral edge of the glass plate Is used to produce small pieces of thin glass.

  For example, Patent Document 1 below discloses a glass processing method for cutting a plurality of small piece thin glass plates from a single large rectangular glass plate. In Patent Document 1, first, the front and rear ends of the large rectangular glass plate are scribed and broken in a direction orthogonal to the transport direction, and then the front and rear ends are cut out, and then the same direction as the transport direction. By scribing and breaking at multiple locations, the glass plate is shredded in the width direction. The small pieces of thin glass thus cut are temporarily stored at the storage station, so that a plurality of small pieces of thin glass are conveyed to the next processing stage.

  Thus, a large amount of thin glass can be produced by producing a plurality of small pieces of thin glass from one large glass.

  Patent Document 2 below discloses a glass plate grinding apparatus that performs cutting, grinding, and polishing of thin glass on one processing line. Like this grinding device, by providing a plurality of processing steps on one processing line, the glass plate can be processed by a consistent flow operation, so that productivity can be improved.

Japanese Patent Laid-Open No. 10-329084 JP 2009-172768 A

  By the way, when producing a product, the shorter the tact time of one product, the larger the product can be produced and the lower the production cost of the product. Therefore, in order to make a product cheaply, it is required to shorten the tact time.

  However, in the processing of the glass plate, a lot of time is required for grinding and polishing of the peripheral portion. In particular, in order to prevent the occurrence of chipping or chipping, it is necessary to perform grinding and polishing slowly over time.

  If a single processing line is configured by combining the glass processing method of Patent Document 1 and the glass processing apparatus of Patent Document 2, the grinding and polishing process becomes a bottleneck, and the production line There is a problem that the tact time cannot be shortened.

  In order to solve this problem, for example, it is conceivable to secure a large number of personnel and equipment in the glass grinding and polishing process and simultaneously grind and polish a large number of glass plates. When used, a single glass plate is ground and polished, so that a large number of CNC processing machines and personnel are required.

  However, when a large number of facilities and personnel are prepared, a large capital investment is required as a result, and a contradiction arises in that an increase in the capital investment amount increases production costs.

  In the case of a general CNC processing machine, it is necessary to set the glass plates one by one. Therefore, after cutting the glass plates, it is necessary to set the glass plates one by one. There is also a problem that it becomes complicated.

  Therefore, the present invention shortens the tact time of glass plate production, reduces the production cost per product, and simplifies the handling of glass plates while reducing production facilities and installation space as much as possible. It is an object of the present invention to provide a glass plate processing method and a processing apparatus for the same.

  The glass plate processing method of the present invention is a glass plate processing method for producing a plurality of small glass plates by cutting, grinding and polishing a single large glass plate, and cutting a single large glass plate A cutting step for cutting into a plurality of glass plates, a transporting step for simultaneously transporting the plurality of glass plates cut in the cutting step with a transport magazine, and a plurality of glass plates transported in the transporting step more than the cutting part. And a grinding / polishing step for grinding and polishing at the same time by a grinding / polishing unit having the processing place.

  According to the above configuration, first, in the cutting step, one large glass plate is cut into a plurality of glass plates at the cutting portion. In the transport step, the plurality of glass plates are transported by a transport magazine. In the grinding / polishing step, the conveyed plurality of glass plates are simultaneously ground and polished by a grinding / polishing unit having a larger number of processing places (processing stages) than the cutting unit. With such a series of process flows, a plurality of small glass plates are produced in large quantities from a single large glass plate.

  For this reason, while a single large glass plate is cut at the cutting portion of the cutting step, the plurality of glass plates can be ground and polished almost simultaneously at a plurality of processing locations in the grinding and polishing portion of the grinding and polishing step. Thereby, the tact time per glass plate in the grinding and polishing step can be shortened. That is, since a plurality of small glass plates are ground and polished almost simultaneously while one large glass plate is being cut, bottlenecking in the grinding and polishing step can be prevented. In addition, since a plurality of glass plates are ground and polished almost simultaneously at a plurality of processing locations, it is not necessary to install a lot of equipment for the grinding and polishing section. Furthermore, in the transport step, a plurality of glass plates are transported simultaneously using a transport magazine and carried into the grinding / polishing section of the grinding / polishing step, so that the small glass plates can be handled easily.

  Note that the number of the plurality of glass plates conveyed by the conveyance magazine in the conveyance step is not limited to the number obtained by cutting one glass plate, and may be more or less.

  In one embodiment of the present invention, the cutting step includes a first cutting step and a second cutting step. In the first cutting step, one large glass is formed by the first cutting portion. The plate is cut, and in the second cutting step, the glass plate is further finely cut at the second cutting portion having a larger number of processing places than the first cutting portion, and in the grinding and polishing step, the second cutting step is performed. This is a method of grinding and polishing a glass plate finely cut by the grinding and polishing portion in which a larger number of processing locations are set than the processing locations of the cutting portion.

  According to the above configuration, one large glass plate is cut in the first cutting step, and the cut glass plate is further cut in the second cutting step. At this time, since the number of processing places of the second cutting part is set more than the first cutting part, the cutting work can be performed efficiently. That is, after cutting a single large glass plate into a plurality of glass plates, the plurality of glass plates can be further cut into small pieces of glass plates at each processing location, so that more efficient glass cutting can be performed. The plurality of cut glass plates can be ground and polished by a grinding / polishing section in which more processing places are set. As a result, even if it takes time to grind and polish individual glass plates in the grinding / polishing step of the grinding / polishing section, a large number of glass plates can be processed almost simultaneously, and the tact time can be shortened.

  Therefore, in a method of processing a small glass plate through a plurality of processing steps of a first cutting step, a second cutting step, and a grinding / polishing step, a plurality of processing portions (first cutting portion, second cutting) The processing place of the grinding and polishing part) is set to increase step by step, so the glass plate can be processed efficiently corresponding to the number of glass and processing man-hours that increases every processing, The tact time can be further shortened.

  In one embodiment of the present invention, after the grinding and polishing step, a second transport step for transporting a plurality of glass plates by a transport magazine is set, and the glass plate is included in the second transport step. This is a method in which a wet maintaining step for maintaining the liquid in a liquid wet state is set.

  According to the said structure, the glass plate grind | polished and polished is conveyed outside from a grinding-polishing part by providing a 2nd conveyance step after a grinding-polishing step. And since the wet maintenance process which maintains a glass plate in the state wet with the liquid is set to this 2nd conveyance step, a glass plate will be conveyed in the state wet with the liquid.

  For this reason, even if grinding and polishing are completed and glass chips and chips are attached to the glass plate, the chips and chips can be removed by the liquid, or adhesion can be prevented. Therefore, scratches can be prevented from adhering to the glass plate after grinding and polishing. Furthermore, it is possible to prevent water scorching (water droplet marks) from being generated on the surface of the glass plate.

  Therefore, in the processing method which can shorten the tact time of glass processing and can produce a glass plate in large quantities, the quality of the glass plate after grinding and polishing can be reliably improved, and the production yield can be increased. In particular, since the glass plate is brought into a wet state in the second transport step after the grinding / polishing step, liquid droplets are not attached to the glass plate at the time of the grinding / polishing step. There is no risk of problems during detection work.

A glass plate processing apparatus according to the present invention is a glass plate processing apparatus for producing a plurality of small glass plates by cutting, grinding and polishing a single large glass plate, wherein a single large glass plate is a plurality of small glass plates. A cutting section that cuts into a glass plate, a conveyance magazine that simultaneously conveys a plurality of glass plates cut at the cutting section,
A grinding / polishing unit configured to grind and polish a plurality of glass plates conveyed by the conveyance magazine at a larger number of processing locations than the cutting unit.

  According to the above configuration, first, a large-sized glass plate is cut into a plurality of glass plates at the cutting portion. And the cut | disconnected several glass plate is simultaneously conveyed by a conveyance magazine. Then, the conveyed plurality of glass plates are ground and polished at the same time by the grinding and polishing unit at a number of processing places (processing stages) than the cutting unit. By the operation of each of these parts, a plurality of small glass plates are produced in large quantities from a single large glass plate.

  For this reason, a plurality of glass plates can be ground and polished almost simultaneously by a grinding and polishing unit having a plurality of processing locations while a large glass plate is cut by the cutting unit. Thereby, the tact time per glass plate in the grinding / polishing portion can be shortened. That is, since a plurality of small glass plates are ground and polished while a single large glass plate is being cut, it is possible to prevent a bottleneck at the grinding and polishing portion. In addition, since a plurality of glass plates are ground and polished almost simultaneously at a plurality of processing locations, it is not necessary to install a lot of equipment for the grinding and polishing section. Furthermore, since a plurality of glass plates are simultaneously conveyed using a conveyance magazine and carried into the grinding / polishing section, the small glass plates can be easily handled.

  The number of the plurality of glass plates conveyed by the conveyance magazine is not limited to the number obtained by cutting one glass plate, and may be more or less.

  In one embodiment of the present invention, the cutting portion includes a first cutting portion and a second cutting portion, and the first cutting portion cuts one large glass plate, In the second cutting part where the number of processing places is larger than that of the first cutting part, the glass plate is further finely cut, and the grinding and polishing part set with a larger number of processing places than the second cutting part, A finely cut glass plate is ground and polished.

  According to the above configuration, one large glass plate is cut at the first cutting portion, and the cut glass plate is further cut at the second cutting portion. At this time, since the number of processing places of the second cutting part is set more than the first cutting part, the cutting work can be performed efficiently. That is, after cutting a single large glass plate into a plurality of glass plates, the plurality of glass plates can be further cut into small pieces of glass plates at each processing location, so that more efficient glass cutting can be performed. Then, the plurality of cut glass plates are ground and polished by a grinding and polishing section in which a number of processing locations are set. Thereby, even if it takes time to grind and polish each glass plate in the grinding / polishing portion, a large number of glass plates can be processed almost simultaneously, and the tact time can be shortened.

  Therefore, in an apparatus for processing a small piece of glass plate through a plurality of processing parts such as a first cutting part, a second cutting part, and a grinding / polishing part, a plurality of processing parts (first cutting part, second cutting part) Since the number of glass and processing man-hours increases with each processing, the glass plate can be processed efficiently, and the tact time can be further increased. Can be shortened.

  In one embodiment of the present invention, a transport magazine for transporting a plurality of glass plates is provided at a downstream position of the grinding and polishing unit, and the glass plates transported by the transport magazine are wet with a liquid. Wet maintenance means for maintaining the temperature is set.

  According to the said structure, the glass plate grind | polished and polished is conveyed outside from a grinding-polishing part by providing a conveyance magazine in the downstream position of a grinding-polishing part. And since the wet maintenance means which maintains the glass plate conveyed in the state wet with the liquid is set, the glass plate will be conveyed in the state wet with the liquid.

  For this reason, even when grinding and polishing are finished and glass chips and chips adhere to the glass plate, the chips can be removed by the liquid or the adhesion can be prevented. Scratches can be prevented from adhering to the polished glass plate. Furthermore, it is possible to prevent water scorching (water droplet marks) from being generated on the surface of the glass plate.

  Therefore, even if the production method can reduce the tact time of glass processing and produce glass plates in large quantities, the glass plate can be reliably prevented from being damaged after grinding and polishing, and the yield of products can be increased. . In particular, since the glass plate is brought into a wet state at a position downstream of the grinding / polishing portion, droplets do not adhere to the glass plate during the processing of the grinding / polishing portion, and there is no possibility of occurrence of problems in position detection detection work or the like.

  According to the processing method of the present invention, while cutting a large glass plate at the cutting portion of the cutting step, the plurality of glass plates are ground almost simultaneously at a plurality of processing locations by the grinding / polishing portion of the grinding / polishing step. Can be polished. Thereby, the tact time per glass plate in the grinding and polishing step can be shortened. That is, since a plurality of small glass plates are ground and polished almost simultaneously while one large glass plate is being cut, bottlenecking in the grinding and polishing step can be prevented. In addition, since a plurality of glass plates are ground and polished almost simultaneously at a plurality of processing locations, it is not necessary to install a lot of equipment for the grinding and polishing section. Furthermore, in the transport step, a plurality of glass plates are transported simultaneously using a transport magazine and carried into the grinding / polishing section of the grinding / polishing step, so that the small glass plates can be handled easily.

  Therefore, while reducing the installation space of facilities and factories as much as possible, the tact time of glass plate production can be shortened, the production cost per product can be reduced, and the handling of glass plates can be simplified. it can.

  Further, according to the invention of the processing apparatus of the present application, a plurality of glass plates can be ground and polished almost simultaneously by a grinding and polishing unit in which a plurality of processing locations are set while cutting a large glass plate at the cutting unit. . Thereby, the tact time per glass plate in the grinding / polishing portion can be shortened. That is, since a plurality of small glass plates are ground and polished while a single large glass plate is being cut, it is possible to prevent a bottleneck at the grinding and polishing portion. In addition, since a plurality of glass plates are ground and polished almost simultaneously at a plurality of processing locations, it is not necessary to install a lot of equipment for the grinding and polishing section. Furthermore, since a plurality of glass plates are conveyed almost simultaneously using the conveyance magazine and carried into the grinding / polishing section, the small glass plates can be handled easily.

  Therefore, while reducing the installation space of facilities and factories as much as possible, the tact time of glass plate production can be shortened, the production cost per product can be reduced, and the handling of glass plates can be simplified. it can.

The whole perspective view which looked down at the whole processing line. The top view which showed the whole processing line. The detailed top view centering on the scribe processing apparatus. The front opening figure of a scribe processing apparatus. The side opening figure of a scribe processing apparatus. The perspective view of a magazine rack. The detailed top view of a grinding device. The figure explaining the glass shape change at the time of processing, and a processing step. The top view which showed the whole processing line of other embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  First, the overall configuration of the glass plate processing apparatus and the processing line L will be described. FIG. 1 is an overall perspective view of the processing line L as a whole. FIG. 2 is a plan view showing the entire processing line L. FIG.

  As shown in FIG. 1, the processing line L is roughly divided into three processes: a scribing process L1, a magazine transport process L2, and a grinding finishing process L3. In each process, a scribing device 1, a magazine transport device 2, and a grinding device 3 are installed.

  One scribing apparatus 1 is installed and configured to scribe and break a large glass plate. In front of the scribing apparatus 1, there is an operator M who performs a work of loading a large glass plate that is a raw material of the workpiece. At a position where the worker M faces, a loading port 11 for loading a large glass plate is provided. The internal structure of the scribing apparatus 1 will be described later.

  As shown in FIG. 2, the magazine conveying device 2 is arranged in a straight line in front of the grinding device and an upstream conveyor 2 </ b> A arranged so as to surround the scribe processing device 1 in a substantially U shape in plan view. The distribution path 2 </ b> B and the downstream conveyor 2 </ b> C disposed on the front side of the scribing apparatus 1 are configured. And this magazine conveyance apparatus 2 is comprised so that the glass plate which is a workpiece | work may be conveyed with the magazine rack 4 mentioned later. A detailed structure will be described later.

  The grinders 3 are installed so that a total of seven units are aligned in a line in the left-right direction. In addition, as shown with the broken line of FIG. 2, you may install more than one grinder 3 ... in the position which faces.

  The grinding device 3 is configured to grind and polish a glass plate inside. Specifically, as will be described later, four glass plates are ground and polished simultaneously in four processing stages (not shown in FIG. 2) in each apparatus 3. In addition, what is installed in the back of each apparatus 3 is the filter 30 which filters cooling water.

  Further, in the distribution path 2B in front of each grinding apparatus 3 ..., a loading / unloading robot 5 for carrying in and out a small glass plate as a workpiece is provided in each grinding apparatus 3 .... The loading / unloading robot 5 is constituted by an articulated robot as shown in FIG. 1, and a small glass plate is loaded / unloaded by loading / unloading the magazine rack 4. Note that a rack housing portion 51 that moves integrally with the loading / unloading robot 5 is provided at the foot of the loading / unloading robot 5. The magazine rack 4 is temporarily accommodated in the rack accommodating portion 51 so that a small glass plate is conveyed together with the magazine rack 4.

  The scribing apparatus 1 will be described in detail with reference to FIGS. 3, 4, and 5.

  As shown in FIG. 3, the scribing apparatus 1 has a large-sized glass sheet Ga standing on the front side, and a loading rack 12 that holds a plurality of sheets is installed. A take-out robot 6 is provided (see FIG. 4). Further, on the rear side of the take-out robot 6, there is provided a delivery table 13 in which the taken large glass Ga is aligned, placed one by one and fed out little by little.

  The input rack 12 has a substantially square box shape, and is configured by a frame body having an open top. A large number of approximately square-shaped large glass plates Ga are held side by side in a state where they stand upright. By using this input rack 12, the worker M can input a large amount of large glass plate Ga into the scribe processing apparatus 1 at a time.

  In addition, the holding state of a large-sized glass plate is not limited to this, You may laminate | stack so that it may superpose | polymerize in an up-down direction.

  The take-out robot 6 is composed of an articulated robot, and a hand grip portion 62 for taking out large glass sheets Ga one by one is provided at the tip of the arm 61.

  As shown in FIG. 5, the hand grip portion 62 includes three claw portions 62 a that extend in a substantially fork shape and a fixing portion 62 b that is fixed to the arm 61. The hand grip portion 62 is configured to firmly fix or release the large glass plate Ga by fixing means (not shown).

  Note that, as described above, when the holding of the large glass plate is laminated so as to overlap in the vertical direction, it may be configured as a sucker type hand grip portion.

  As shown in FIG. 3, the delivery table 13 includes a plurality of fixed bars 13a fixed to the apparatus and a feed bar 13b that moves up and down, and a glass plate Ga placed on the fixed bar 13a is used as the feed bar 13b. Is moved up and down so that it is fed out to the conveyor 15 side described later.

  A first scribe head 14a and a first bending mechanism 14b for scribing and breaking a large glass plate Ga are provided at the end of the delivery table 13 on the side of the conveyor 15. By providing the first scribe head 14a and the first bending mechanism 14b, the large-sized glass plate Ga is scribed every predetermined length (width), and a break is made from the scribe scratch as a starting point. It is cut into a strip-shaped glass plate Gb having a width.

  The first scribe head 14a is configured to slide in a direction orthogonal to the feed-out direction (the front-rear direction in the drawing), and is configured to be scribed by this sliding movement. In FIG. 5, the first scribe head 14a is set on the upper side of the glass plate G so as to scribe the glass plate G from the upper side. You may make it scribe from the side.

  On the side of the delivery table 13, a transport conveyor 15 for transporting the strip-shaped glass plate Gb is provided. The transport conveyors 15 are installed so as to extend in the front-rear direction in two rows in parallel, and the strip-shaped glass plates Gb are respectively transported to the rear side by the two rows of conveyors 15.

  A second scribing head 16a and a second bending mechanism 16b for scribing and breaking the strip-shaped glass plate Gb are further provided at the rear end portion of the conveyor 15. The second scribe head 16a and the second bending mechanism 16b are also slid by moving the second scribe head 16a in a direction perpendicular to the conveying direction, like the first scribe head 14a and the first bending mechanism 14b. Then, the strip glass Gb is broken by being bent by the second bending mechanism 16b starting from the scribe scratch. Thus, by providing the 2nd scribe head 16a and the 2nd bending mechanism 16b, the strip-shaped glass plate Gb is further cut | disconnected by the glass plate Gc of a small piece also here.

  Two transfer robots 7, 7 are provided behind the transfer conveyor 15 corresponding to the transfer conveyors 15, 15. This transfer robot 7 is constituted by a three-joint SCARA robot, and is set so that small glass plates Gc cut at the rear end of the transfer conveyor 15 are stacked on the magazine rack 4 in order. Note that the alternate long and short dash line is the swing locus of the tip hand portions 7a and 7a of the transfer robots 7 and 7.

  On the rear side of the transfer robots 7 and 7, rotary tables 17 and 17 are provided. Two rotary tables 17 and 17 are also provided in the same manner as the transfer robots 7 and 7. On the rotary table 17, the magazine racks 4 are respectively placed in a set of two. The turntable 17 is configured to rotate 360 degrees. When a predetermined number of small glass plates Gc, for example, 50 sheets are loaded in the magazine rack 4, the rotary table 17 rotates 180 degrees to form a magazine. It is set to be replaced with the magazine rack 4 on the transport device 2 side.

  Next, the magazine transport device 2 will be described in detail with reference to FIG.

  As described above, the magazine transport device 2 includes the upstream conveyor 2A, the sorting path 2B, and the downstream conveyor 2C. Of these, the upstream conveyor 2A will be described first.

  The upstream conveyor 2 </ b> A includes a first conveyor 21 positioned on the right side of the scribing apparatus 1, a second conveyor 22 positioned on the rear side of the scribing apparatus 1, and a third conveyor 23 positioned on the left side of the scribing apparatus 1. And it consists of.

  The first conveyor 21 is installed so that the right side of the scribing apparatus 1 extends in the front-rear direction so that when the empty magazine rack 4 is inserted from the upstream side of the front position, the first conveyor 21 is conveyed to the second conveyor 22 side. Yes. A lot of empty magazine racks 4 are stocked on the first conveyor 21.

  The second conveyor 22 is installed so that the rear side of the scribing apparatus 1 extends in the left-right direction so as to contact the rotary table 17 of the scribing apparatus 1 in order to load small glass plates Gc on the empty magazine rack 4. is doing. The second conveyor 22 is driven intermittently so as to feed the magazine rack 4 to the rotary table 17 with good timing.

  The 3rd conveyor 23 is installed so that the left side of the scribe processing apparatus 1 may be extended in the front-back direction so that the magazine rack 4 which loaded the small glass plate Gc may be conveyed to the distribution channel | path 2B. By this third conveyor 23, the magazine rack 4 on which small glass plates Gc are stacked is conveyed to the sorting path 2B.

  As described above, the distribution path 2 </ b> B is installed to extend in the left-right direction in front of the grinding device 3. A base body 51 of the loading / unloading robot 5 is installed in the sorting path 2B so as to be slidable in the left-right direction.

  Finally, the downstream conveyor 2 </ b> C is installed on the left side of the scribing apparatus 1 so as to extend in the front-rear direction in order to finally bring out the ground and ground glass plate Gc to the front side of the scribing apparatus 1. .

  The downstream conveyor 2C is provided with mist injection ports 24 to maintain the small glass plate Gc in a wet state. By doing so, the small glass plate Gc after grinding and polishing is hardly damaged. A cooling water filter 25 is provided adjacent to the downstream conveyor 2C.

  Next, the magazine rack 4 transported by the magazine transport device 2 will be described with reference to FIG.

  As shown in FIG. 6, the magazine rack 4 is configured by a rectangular box-shaped frame having an open upper surface, and partition walls 41 and 41 are provided inside so as to securely hold a small glass plate Gc. ing. The partition wall 41 is configured to be freely slidable within the magazine rack 4 so as to be compatible with various sizes of the small glass plate Gc.

  In the magazine rack 4, for example, 50 small glass plates Gc are stacked so as to be stacked in the vertical direction. This stacking is performed by a plurality of recesses (not shown) provided in the partition walls 41 and 41 so that the glass plates Gc of the small pieces do not contact each other.

  The structure and shape of the magazine rack 4 are not particularly limited.

  Next, the grinding device 3 will be described with reference to FIGS. 3 and 7.

  As shown in FIG. 3, the grinding apparatus 3 is provided with a transfer robot 8 constituted by a three-joint SCARA robot at a central position, and four processing stages 31, 31, 31, 31 are provided around the transfer robot 8. On the front side of the transfer robot 8, a glass insertion / extraction port 32 through which a small glass plate Gc is taken in and out is provided. As shown in FIG. 7, the glass loading / unloading port 32 is provided with a holding portion 33 for holding the small glass plate Gc before grinding and polishing and the small glass plate Gd after grinding and polishing via the magazine rack 4. ing.

  In this grinding apparatus 3, the conveyance robot 8 grasps the small glass plate Gc before processing from the magazine rack 4 installed in the holding unit 33, conveys it to each processing stage 31. The outer shape of the glass plate is finished by grinding and polishing the plate Ga. Then, the processed work is completed by returning the processed small glass plate Gd to the holding unit 33 by the transfer robot 8 again.

  Specifically, grinding and polishing are performed by the grinding apparatus 3 shown in FIG. Each of the four processing stages 31 of the grinding apparatus 3 is provided with a processing unit 34 that performs grinding and polishing, and each of the processing units 34 is provided with a grinding spindle 35.

  The grinding spindle 35 can be switched between grinding and polishing, and processing between the outer peripheral edge of the small glass plate Gc and the inner peripheral edge of the hole by replacing a plurality of tools (not shown). , Is configured to do.

  In addition, since the detailed structure of the grinding apparatus 3 is described in the specification of Japanese Patent Application No. 2009-237944 which is an earlier application of the present applicant, detailed description thereof is omitted.

  The characteristic structure of the grinding device 3 of the present embodiment is the structure of the holding portion 33 of the glass input / output port 32. That is, in this grinding apparatus 3, since the small glass plate Gc is loaded on the magazine rack 4 and automatically received, the holding portion 33 of the glass loading / unloading port 32 is formed in a rotary table format. It is possible to automatically put in and out.

  Specifically, the holding unit 33 is configured in a rectangular table shape, and four mounting locations for mounting the magazine rack 4 are set on the rectangular table-shaped holding unit 33, and two of these are set. The two 33a and 33a are set outside the apparatus, and the remaining two 33b and 33b are set inside the apparatus.

  Each of the mounting positions is provided with one wet tank 36 for maintaining the small glass plate Gd in a wet state when the grinding and polishing are completed. In this wet tank 36, mist-like spraying is performed inside to prevent chips and dust from adhering to the small glass plate Gc. In addition, by preventing drying, the surface of the small glass plate Gc is prevented from generating water. In addition to the mist spray, a wet state may be maintained by dropping water droplets on the small glass plate Gc.

  Thus, by configuring the holding portion 33, the small glass plate Gc can be automatically taken in and out of the grinding apparatus 3 without depending on a human hand.

  A plurality of small glass plates Gc, that is, small glass plates Gc stacked on the magazine rack 4 are automatically loaded and discharged from the holding portion 33 as shown in FIG. It is.

  The taking-in / out robot 5 is configured to slide in the left-right direction in the sorting passage 2B. Then, first, the upstream side conveyor 2 </ b> A moves to the third conveyor 23 side, picks up the magazine rack 4 loaded with small glass plates Gc from the third conveyor 23, and temporarily stores it in the rack accommodating portion 51. Thereafter, the magazine rack 4 is slid and moved to the grinding device 3 where the grinding / polishing is completed in a state where the magazine rack 4 is accommodated in the rack accommodating portion 51. Then, the magazine rack 4 accommodated in the rack accommodating portion 51 is set in the grinding device 3, and instead, the magazine rack 4 that has been processed by the grinding device 3 is accommodated in the rack accommodating portion 51.

  Although not shown in the drawings, the rack accommodating portion 51 that accommodates the magazine rack 4 is provided with a spraying portion that performs mist spraying so that the small glass plate Gd is held in a wet state.

  Next, changes in the glass shape and processing steps when processing from a large glass plate Ga to a small glass plate Gd by the glass processing apparatus and processing line in this embodiment will be described with reference to FIG.

  First, as shown in step (a), a large glass plate Ga is supplied to a delivery table (not shown in FIG. 8) of the scribing apparatus. The large glass plate Ga is made of, for example, a square blue plate glass having a thickness of about 550 mm × about 650 mm and a thickness of about 0.7 mm.

  Next, as shown in step (b), the position of the marking m for trim (operation for removing unnecessary end portions) is confirmed, and a scribe scratch S for trim is made on the large glass plate Ga. At this time, although not shown, fine adjustment of the scribe position is performed by monitoring with a camera or the like. If the marking m is not provided, the scribe position may be determined by mechanical positioning with the positioning block K indicated by the dotted line.

  Next, as shown in step (c), the trim portion T is broken and separated from the large glass plate Ga. Thereby, trim processing is performed. At the same time or thereafter, a scribe flaw S1 is made at a position corresponding to the size (long side) of the small glass plate, for example, about 40 mm from the end.

  Thereafter, as shown in step (d), a break is made along the scribe groove S1. Thereby, the strip-shaped glass plate Gb is formed. This strip-shaped glass plate Gb is transferred to the above-described transport conveyor (not shown in FIG. 8).

  Next, as shown in step (e), the two strip-shaped glass plates Gb and Gb conveyed by two rows of conveyors (not shown in FIG. 8) have trim markings m and m positioned. Once confirmed, the scribe scratches S2, S2 are damaged. Here, mechanical positioning may be performed by the positioning block K.

  Next, as shown in step (f), a break is made along the scribe groove S2. As a result, trimming in the horizontal direction is performed. At the same time or thereafter, scribe scratches S2 and S2 are made at a position corresponding to the size (short side) of the small glass plate Gc, for example, at a position about 30 mm from the end.

  Thereafter, as shown in step (g), a break is made along the scribe groove S2. Thereby, a rectangular glass plate Gc (coarse shape) is formed. The small glass plate Gc is loaded on the magazine rack of the rotary table via a transfer robot (not shown in FIG. 8).

  This small piece of glass plate Gc is made more than the strip-shaped glass plate Gb. This is because, in the case of the large-sized glass plate Ga, the scribing / breaking is performed only at one place, whereas in the case of the strip-shaped glass plate Gb, the scribing / breaking is performed at two places. It is.

  Next, as shown in step (h), the small glass plate Gc is conveyed to a grinding device (not shown in FIG. 8), and a plurality of pieces are processed at the same time. That is, because seven grinders each having four machining stages are set, a total of twenty-eight pieces of glass plates Gc can be machined simultaneously. (Six in Figure 8).

  At this time, grinding / polishing is a processing process that takes more time than scribing / breaking. Therefore, a large number is processed simultaneously to reduce the tact time.

  Thereafter, as shown in step (i), grinding and polishing are performed from the outer peripheral edge g1 of the glass plate Gc. This is because if the hole g2 is first processed, the rigidity around the hole g2 is reduced, and chipping or the like is likely to occur during grinding and polishing of the outer peripheral edge g1.

  Finally, as shown in step (j), the hole g2 is ground and polished. In this way, by performing the grinding / polishing of the hole portion g2 at the end, the small glass plate Gd can be ground and polished into a more accurate shape.

  Through the steps as described above, the processing from the large glass plate Ga to the small glass plate Gd is completed.

  Thus, in this embodiment, in the processing method of the glass plate which cut | disconnects, grinds and polishes one large-sized glass plate Ga, and produces the several small glass plate Gd, first, one large-sized glass plate Ga The glass plate Ga is cut into a plurality of small glass plates Gc by the first scribe head 14a and the first bending mechanism 14b, and the cut glass plates Gc are simultaneously conveyed by the magazine rack 4. Further, the conveyed plurality of small glass plates Gc are ground and polished at the same time by the grinding apparatus 3 provided with more processing stages 31 than the first scribe head 14a and the like.

  With this series of processing methods, in this embodiment, a plurality of small glass plates Gd are produced in large quantities from one large glass plate Ga.

  Therefore, while the first scribing head 14a, the first bending mechanism 14b, and the like are used to cut one large glass plate Ga, the grinding apparatus 3 simultaneously uses a plurality of small pieces of glass on a plurality of processing stages 31. The plate Gc can be ground and polished.

  Thereby, the tact time per glass plate in the grinding / polishing step performed by the grinding apparatus 3 can be shortened. That is, since a plurality of small glass plates Gc are ground and polished simultaneously while one large glass plate Ga is being cut, bottlenecking in the grinding and polishing step can be prevented. Further, since a plurality of small glass plates Gc... Are simultaneously ground and polished by the plurality of processing stages 31..., It is not necessary to install a lot of equipment for grinding and polishing. Further, since the magazine transport device 2 uses the magazine rack 4 to simultaneously transport a plurality of small glass plates Gc... And carry them into the grinding device 3, the small glass plates Gc can be easily handled.

  Therefore, while reducing the installation space of facilities and factories as much as possible, the tact time of glass plate production can be shortened, the production cost per product can be reduced, and the handling of glass plates can be simplified. it can.

  In this embodiment, the scribing / breaking process is divided into a process of the first scribe head 14a and the first bending mechanism 14b, and a process of the second scribe head 16a and the second bending mechanism 16a. The scribing head 14a and the first folding mechanism 14b perform scribing and breaking at one location, the second scribing head 16a and the second folding mechanism 16b at two locations, and the grinding device 3 has more than that. Grinding and polishing is performed at four or more locations (processing stage 31...).

  By such a processing method, one large glass sheet Ga is cut in the process of the first scribe head 14a and the first folding mechanism 14b, and the cutting is performed in the process of the second scribe head 16a and the second folding mechanism 16b. The glass plates Gb and Gb thus cut are further cut. At this time, since there are more two places such as the second scribe head 14a than one place such as the first scribe head 14a, the cutting operation can be performed efficiently. That is, after cutting a large glass plate Ga into a plurality of glass plates Gb, Gb, the plurality of glass plates Gb, Gb are further cut into small pieces of glass plates Gc. Glass cutting can be performed. Further, by grinding and polishing the plurality of cut pieces of the glass plate Gc with the grinding apparatus 3 provided with a larger number of processing stages 331..., More efficient glass processing can be performed. Even if it takes time to grind and polish the small glass plate Gc, many small glass plates Gc... Can be processed at the same time, and the tact time can be shortened.

  Therefore, the number of machining points (the first scribe head 14a and the like, the second scribe head 16a and the like, the machining stage 31 of the grinding apparatus 3) is set to increase gradually, and thus increases with each machining. Corresponding to the number of glasses to be processed and the processing time, the glass plate can be processed efficiently, and the tact time can be further shortened.

  Further, in this embodiment, after the grinding device 3 for performing grinding and polishing, a plurality of small glass plates Gc... Are set so as to be transported by the magazine transport device 2 via the magazine rack 4, and this magazine transport is performed. The downstream conveyor 2C of the apparatus 2 is provided with a mist injection port 24 so that the small glass plate Gc is maintained in a wet state with the liquid.

  In this way, the small-sized glass plate Gc that has been ground and polished is conveyed outside from the grinding device 3 by being conveyed by the magazine conveying device 2 after the grinding device 3. And since the mist injection port 24 is provided in 2 C of downstream conveyors, the small glass plate Gc will be conveyed in the state wet with the liquid.

  For this reason, even if grinding and polishing are finished and glass chips and chips are attached to the small glass plate Gd, the chips and chips can be removed by the liquid, or adhesion is prevented. Therefore, it is possible to prevent scratches from adhering to the glass plate Gd after grinding and polishing.

  Therefore, in the processing method that can reduce the tact time of glass processing and produce small pieces of glass plate Gd in large quantities, the quality of the small piece of glass plate Gd after grinding and polishing can be improved reliably, and the production yield can be increased. Can be raised. In particular, since the small glass plate Gc is brought into a wet state after the operation of the grinding apparatus 3, since the droplets are not attached to the glass plate during grinding and polishing, there is a problem in detection work such as position detection. There is no risk of it occurring.

  Next, another embodiment will be described with reference to FIG. In this embodiment, unlike the above-described embodiment, the magazine transport device 2 is configured by only the upstream conveyor 102A, and is configured without the sorting passage 2B and the downstream conveyor 2C.

  That is, in this embodiment, the magazine rack 4 is transported only by the upstream conveyor 102, and the loading / unloading to / from the grinding device 3 is performed manually by the operator M.

  By configuring in this way, when it is not necessary to make the tact time much faster than the above-described embodiment, when it is necessary to reduce the amount of capital investment, and when it is desired to increase the equipment gradually, etc. These requirements can be satisfied.

  In particular, the tact time and the total number of machining operations vary depending on the number of grinding apparatuses 3, and thus the degree of freedom of production equipment can be increased with this configuration.

  Of course, when the processing line L2 is configured in this way, since it is necessary to manually load and unload the magazine rack 4 into and from the respective grinding apparatuses 3, it is necessary for the operator M to perform more than the above-described embodiment. The number increases.

  In addition, since this embodiment and the above-described embodiment are exactly the same for the other configurations, detailed description thereof will be omitted.

  As mentioned above, this invention is not limited to this embodiment, The embodiment applied to the processing apparatus and processing line of all the glass plates is included.

  In addition, although the workpiece | work of this embodiment was demonstrated with the general blue plate glass, the glass plate with an ITO film | membrane may be sufficient. In this case, positioning needs by marking increase.

  Further, the grinding apparatus is not limited to four processing stages, and may be two, three, five, or six.

  Further, the magazine rack is not limited to this type, and is not limited as long as it can transport a plurality of glass plates.

L ... Processing line L1 ... Scribing process L2 ... Magazine transfer process L3 ... Grinding finishing process 1 ... Scribe processing device 2 ... Magazine transfer device 3 ... Grinding device 4 ... Magazine rack Ga ... Large glass plate Gc ... Small glass plate

Claims (6)

A method for processing a glass plate by cutting, grinding and polishing a single large glass plate to produce a plurality of small glass plates,
A cutting step of cutting a single large glass plate into a plurality of glass plates at a cutting portion;
A transport step of simultaneously transporting a plurality of glass plates cut in the cutting step with a transport magazine;
A grinding and polishing step for simultaneously grinding and polishing a plurality of glass plates conveyed in the conveying step in a grinding and polishing unit having a larger number of processing locations than the cutting unit;
A method for processing a glass plate. The cutting step comprises a first cutting step and a second cutting step;
In the first cutting step, a single large glass plate is cut at the first cutting portion,
In the second cutting step, the glass plate is further finely cut at the second cutting part where the number of processing places is larger than that of the first cutting part,
2. The glass plate processing method according to claim 1, wherein in the grinding and polishing step, the glass plate finely cut by the grinding and polishing portion in which more processing places are set than the processing places of the second cutting portion is ground and polished. 3. . After the grinding and polishing step, set a second transport step for transporting a plurality of glass plates with a transport magazine,
The glass plate processing method according to claim 1 or 2, wherein a wet maintaining step for maintaining the glass plate in a wet state with a liquid is set in the second transport step. A glass plate processing apparatus that cuts, grinds and polishes a single large glass plate to produce a plurality of small glass plates,
A cutting section for cutting a large glass plate into a plurality of glass plates;
A transport magazine for simultaneously transporting a plurality of glass plates cut by the cutting section;
A plurality of glass plates transported by the transport magazine, setting a number of processing places more than the cutting unit, and grinding and polishing unit for grinding and polishing simultaneously,
An apparatus for processing a glass plate. The cutting part comprises a first cutting part and a second cutting part,
In the first cutting part, a single large glass plate is cut,
In the second cutting part where the processing place is more numerous than the first cutting part, the glass plate is further cut finely,
The glass plate processing apparatus according to claim 4, wherein the finely cut glass plate is ground and polished by the grinding and polishing portion in which more processing places are set than the second cutting portion. In the downstream position of the grinding and polishing unit, a conveyance magazine for conveying a plurality of glass plates is provided,
The glass plate processing apparatus according to claim 4 or 5, wherein wet maintaining means for maintaining the glass plate conveyed by the conveyance magazine in a wet state with a liquid is set.