JP2012051076A - Apparatus and method for manufacturing plate-like object, and device and method for grinding end surface of the plate-like object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for manufacturing a plate-like object, and a device and a method for grinding an end surface of the plate-like object.SOLUTION: The end surface grinding device 22 chamfers the end surface of a glass plate G by means of an end surface chamfering grindstone 36 in the state of supporting the vicinity of an end of the glass plate G by supporting rollers 68, 68, ... while conveying the glass plate G by a conveyance means 16. The supporting rollers 68, 68, ... abut on an undersurface of the glass plate G during conveyance, advance/recede in the direction of getting close to/getting away from the end surfaces Ga and Gb, with respect to the conveyance direction of the glass plate G, depending on an end surface position to grind the glass plate G, and support the vicinity of the end of the glass plate G. A position to support the glass plate G by the supporting rollers 68, 68, ... is set as a position in which the end of the glass plate G is not greatly sagged by self-weight. A position control section 70 controls advance/receding distances of the supporting rollers 68, 68 on the basis of information on a shape of the glass plate G, which is stored in a storage means, and sets the position to support the glass plate G by the supporting rollers 68, 68, ....

Description

  The present invention relates to a plate-like product manufacturing apparatus and method, and a plate-like end surface grinding apparatus and end face grinding method.

  Generally, the manufacturing method of the glass plate used for the glass substrate for FPD (Flat Panel Display), the glass plate for construction, etc. is performed with the following flows. The molten glass is formed into a glass ribbon by forming means such as a float method and a fusion method. The formed glass ribbon is cooled and cut into a glass plate of a predetermined size by a cutting device. The end surface of the cut glass plate is ground (chamfered) and packed in a packing container.

  Examples of a method for cutting the glass ribbon into a glass plate having a predetermined size include the following methods. A cutting line is processed on the surface of the glass ribbon, the glass ribbon is bent so that stress is applied to the cutting line, the glass ribbon is folded, and cut into a glass plate of a predetermined size. In patent document 1, the apparatus which processes a cut line on the surface of a glass ribbon is disclosed. The glass ribbon cutting apparatus disclosed in Patent Document 1 is an apparatus that picks up a plurality of glass plates having different sizes at a time without waste while conveying a glass ribbon that has been slowly cooled by a lehr.

  Here, the name of each part of the glass plate G is defined below with reference to FIG. That is, reference numeral 1 is an end face of the glass plate G, reference numeral 2 is a corner, and a portion 3 indicated by hatching is an end.

  The glass plate cut into a predetermined size is chamfered by chamfering its end surface by grinding with a grinding member, and chamfering by chamfering its corner by a corner grinding member.

  The grinding device for the end face of the glass plate disclosed in Patent Document 2 prevents the bending of both end portions of the glass plate by sandwiching both end portions of the glass plate by a pair of upper and lower endless belts and moves the belt. The end surface of the glass plate is ground by the grinding member while the glass plate is conveyed. Further, the grinding device of Patent Document 2 includes a suction pad that sucks and holds the lower surface of the glass plate and conveys the glass plate together with a pair of upper and lower endless belts. Further, in the grinding device disclosed in Patent Document 2, the distance between the grinding members disposed on both sides of the glass plate is positioned according to the size of the glass plate so that even glass plates having different sizes can be ground. It has been adjusted.

WO2008 / 136239A1 JP 2008-213090 A

  However, in the grinding device disclosed in Patent Document 2, when the size of the glass plate G is much larger than the interval of the belt conveying means 6 as shown in FIG. 15, the end portion 3 of the glass plate G is bent by its own weight. The difference between the height of the end surface 1 of the glass plate G and the height of the grinding surface (groove) 5 of the grinding member 4 increases, and the end surface 1 of the glass plate G cannot be ground into a desired shape, or the end of the glass plate Could break. That is, as shown in FIG. 15, the lower edge 1 a of the end surface 1 of the glass plate G is ground by the grinding surface 5, but the upper edge 1 b does not contact the grinding surface 5 and may not be ground. .

  Therefore, when Patent Document 1 and Patent Document 2 are combined, it is necessary to adjust the position of the belt conveying means according to the size change of the glass plate after stopping the conveyance of the cut glass plate. There was a problem that the productivity of the plate was lowered.

  The present invention has been made in view of such circumstances, and grinds the end surfaces of a plurality of plate-like objects having different sizes continuously conveyed from a cutting device into a desired shape without reducing productivity. It is an object of the present invention to provide a plate-like product manufacturing apparatus and method, a plate-like end surface grinding apparatus, and an end surface grinding method.

  In order to achieve the above-mentioned object, the present invention provides a cutting means for cutting a belt-like plate-like material formed into a belt-like shape into a predetermined rectangular plate-like material, and the rectangular plate-like material cut by the cutting means. A conveying means for conveying; a grinding means for grinding an end face of the rectangular plate-like article while conveying the rectangular plate-like article by the conveying means; and the rectangular plate-like article whose end face is ground by the grinding means. A plate-like product manufacturing apparatus comprising: packing means for packing

  In order to achieve the above object, the present invention cuts a belt-like plate-like material formed into a belt-like shape into a predetermined rectangular plate-like material, and conveys the rectangular plate-like material cut by the cutting step A plate-like object comprising: a grinding step of grinding an end face of the rectangular plate-like object; and a packing step of packing the rectangular plate-like object whose end face has been ground by the grinding step. A manufacturing method is provided.

  According to the present invention, the belt-like plate-shaped object formed into a belt-like shape is cut into a predetermined rectangular plate-like material at least once in the cutting step provided with the cutting means, and the cut rectangular plate-like material is transported. The rectangular plate-like object transferred to the conveying means and the rectangular plate-like object transferred to the conveying means while being conveyed by the conveying means, the end face of the rectangular plate-like object is ground by the grinding means, and the rectangular shape whose end face is ground Pack the plate in the packing process.

  Further, in the grinding process, the grinding member is position-controlled at the optimum position according to the size of the plate-like object, and the end surface is smoothly ground. Thereby, even if it is a plate-shaped object with which the size differs continuously conveyed from a cutting process, the end surface can be ground to a desired shape. Therefore, in this invention, even if it is a plate-shaped object from which the size flows continuously, the grinding efficiency of the edge part of the plate-shaped object improves, and process work time can be shortened.

  In order to achieve the above object, the present invention is an end surface grinding apparatus for a plate-like object that grinds the end surface of the plate-like object while conveying the plate-like object in a predetermined direction. A conveying means for conveying the plate-like object in a predetermined direction along the end surface to be ground, and advancing and retreating in a direction approaching or leaving the end surface with respect to the conveying direction according to a position of the end surface to be ground of the plate-like object. Advancing / retreating support means for supporting the plate-like object, a grinding means for pressing the grinding end face of the plate-like object conveyed by the conveying means and the advancing / retreating support means to grind the end face, and the grinding means Provided on the upstream side of the plate-shaped object conveyance direction, shape information acquisition means for acquiring shape information of the plate-shaped object, storage means for storing the shape information obtained by the shape information acquisition means, and the storage Based on the shape information stored in the means. There are, to provide an end face grinding apparatus of the platelet being characterized in that and a position control unit for controlling the position of the reciprocating distance and said grinding means of said retractable supporting means.

  In order to achieve the above object, the present invention transports the plate-like object in a predetermined direction along an end surface to be ground while holding the plate-like object by a conveying means, and is conveyed by the conveying step. The plate-like object is supported by advancing and retreating the advancing / retreating support means in a direction approaching or leaving the end face with respect to the transport direction according to the end face position of the plate-like object to be ground. And a step of grinding the end face by pressing a grinding means against an end face to be ground of the plate-like object conveyed by the conveying means and the advance / retreat support means, and the plate-like object of the grinding means On the upstream side in the transport direction, there is provided shape information acquisition means for acquiring shape information of the plate-like object, the shape information obtained by the shape information acquisition means is stored by the storage means, and stored in the storage means Based on the shape information To provide an end face grinding method of the platelet, wherein the controller controls the position control unit the position of the reciprocating distance and said grinding means of said retractable supporting means.

  According to the present invention, first, a plate-like object continuously flowing from an upstream process such as a grinding process is held by the conveying means, and the predetermined value along the end surface where the plate-like object is ground by this conveying means. Transport in the direction.

  The conveying means may hold the entire lower surface of the plate-like object, but adopts a means for holding the central part of the lower surface of the plate-like object at one point, several points, a line, or a plane. However, it is preferable in terms of simplifying the configuration of the conveying means. The holding means by the conveying means may be vacuum suction, or may be other means such as electrostatic suction or sticking with an adhesive.

  Next, the advance / retreat support means is advanced or retracted in the direction approaching or moving away from the end face with respect to the transport direction, depending on the position of the end face where the plate-like object is ground with respect to the plate-like object being transported by the transport means. And supporting the vicinity of the end of the lower surface of the plate-like object. The support position of the plate-like object by the advancing / retreating support means is set to a position where the end of the plate-like object does not droop greatly due to its own weight and to a position inside the end face of the plate-like object. This is to suppress the error in the vertical position between the end face of the plate-like object and the grinding means in the next grinding step as much as possible.

  Next, the end surface is ground by pressing a grinding unit against an end surface to be ground of the plate-like object transported by the transport unit and the advance / retreat support unit.

  In this case, the advancing / retreating support means may have a conveying force for the plate-like object, but the advancing / retreating support means itself need not have a conveying force because the conveying means is provided with the conveying force. The end face of the plate-like object being conveyed is ground and chamfered by a grinding means positioned at a grinding position.

  Here, in the present invention, the shape information acquisition means for acquiring shape information of the plate-like object is provided on the upstream side of the grinding means in the plate-like object conveyance direction, and the shape information obtained by the shape information acquisition means is provided. Is stored in the storage means, and based on the shape information of the plate-like object stored in the storage means, the advance / retreat distance of the advance / retreat support means and the grinding position by the grinding means are feedforward controlled by the position controller.

  Thereby, in this invention, even if it is a plate-shaped object with different sizes conveyed continuously, the end surface of a plate-shaped object can be ground to a desired shape, continuously conveying a plate-shaped object as it is. Therefore, the present invention improves the grinding efficiency of the end face of the plate-like object and can shorten the process work time.

  The advancing / retracting support means of the present invention supports a plurality of rotatable roller members that support the plate-like object, the plurality of roller members, and the plurality of roller members on the end surface with respect to the transport direction. Roller member support means for moving forward and backward in the approaching direction or away direction, and the position control unit controls the roller member support means to control the advance / retreat distance of the plurality of roller members.

  According to the present invention, the roller member advances and retreats in the direction approaching or leaving the end surface with respect to the transport direction of the plate-shaped object, depending on the size of the plate-shaped object continuously conveyed.

  The roller member is in contact with the lower surface of the plate-like object to support the plate-like object, and at this time, it is necessary to support the plate-like object to the extent that the end of the plate-like object does not hang down. For this purpose, the support position of the plate-like object by the roller member is controlled by the position control unit. That is, the position control unit feeds forward / backward movement of the roller member support means based on the shape information of the plate-like object stored in the storage means, and controls the advance / retreat distances of the plurality of roller members, The support position of the plate-like object by the roller member is set. Thereby, the edge part of a plate-shaped object does not hang down at the time of the grinding process by a grinding means, and the end surface of a plate-shaped object can be ground to a desired shape.

  Conventionally, when the end face of the plate-like object is ground, the end part is fixed so that the end part of the plate-like object does not vibrate. However, as in the present invention, the lower surface of the plate-like object in the vicinity of the end is supported by the roller support member so that the end can be freely moved during grinding. When the end face of the plate-like object is brought into contact with the groove which is the grinding surface of the grinding member of the grinding means, the end face is pressed against the groove even when the height adjustment of both the end face and the groove is not strictly performed. Sometimes the end face is guided in the shape of the groove and the end of the plate-like object is deformed according to the height of the groove. Therefore, the height of both the end face and the groove is a desired position. Therefore, the end face of the plate-like object can be ground into a desired shape without strictly adjusting the heights of both the end face of the plate-like object and the grinding surface of the grinding member.

  In other words, in the conventional method in which the end of the plate is sandwiched between a pair of upper and lower belts, the end of the plate is fixed and there is no degree of freedom to move even if the end is a minute amount. In some cases, the heights of the plate and the end face of the plate-like object do not match and cannot be ground to a desired shape. Further, strictly adjusting the height of both the end face of the plate-like object and the groove of the grinding member has a limit due to mechanical error.

  Therefore, if the lower surface of the plate-like object is supported only by the roller member as in the present invention, when the end surface of the plate-like object is brought into contact with the groove that is the grinding surface of the grinding member, both the end surface and the groove are provided. Even when the height of the plate is not strictly adjusted, the end portion of the plate-like object is deformed according to the height of the groove, and the height of both the end surface and the groove becomes a desired position. Therefore, the end face of the plate-like object can be ground into a desired shape without strictly adjusting the heights of both the end face of the plate-like object and the grinding surface of the grinding member.

  The grinding means of the present invention comprises a grinding member, and a grinding member driving means that supports the grinding member and moves the grinding member forward and backward with respect to an end surface of the plate-like object, and the position control unit includes: It is preferable to control the position of the grinding means by controlling the forward / backward movement operation of the grinding member by the grinding member driving means.

  The grinding member is abutted against the end surface of the plate-like object and chamfers the end surface by grinding. For this purpose, the end surface abutting position of the grinding means is feedforward controlled by the position control unit. That is, the position control unit feed-forward-controls the advancing and retreating movement of the grinding member by the grinding member driving unit based on the shape information of the plate-like object stored in the storage unit, so that the end surface contact position of the grinding unit Is set. Thereby, the grinding process by a grinding means can be performed smoothly.

  It is preferable that the present invention includes a grinding member replacement unit that removes the grinding member from the grinding member driving unit and attaches another grinding member to the grinding member driving unit to replace the grinding member.

  If the grinding member is exchanged manually, the continuous conveyance of the plate-like object must be stopped, and the time required for exchanging the grinding member also becomes long, so the process work time cannot be shortened.

  Therefore, in the present invention, since the grinding member replacement means is provided, the replacement time of the grinding member can be shortened, and the process work time can be shortened.

  In order to provide the grinding member replacement means, it is necessary to secure a wide space below the grinding member, so the spindle base of the grinding member was installed above the plate-like object conveyance path. Thereby, a wide space for installing the grinding member replacement means can be secured below the grinding member, and since the grinding member replacement means is installed in this space, the grinding member can be automatically replaced.

  The conveying means of the present invention includes a holding portion that holds the plate-like object, and moves the holding portion forward and backward relative to the plate-like object, and moves the holding portion along the predetermined direction to start conveyance. A holding unit driving means that reciprocates between a position and a conveyance end position, a holding / release switching operation of the plate-like object by the holding unit, the forward / backward movement operation of the holding unit by the holding unit driving unit, and It is preferable to include a conveyance control unit that controls the reciprocating movement operation.

  The holding unit of the transport unit needs to transport the plate-like object from the conveyance start position that holds the plate-like object that is continuously conveyed to the conveyance end position that corresponds to the grinding end position by the grinding member. For this reason, the holding unit is moved back and forth with respect to the plate-like object by the holding unit driving means, and is reciprocated between the transfer start position and the transfer end position. In addition, the conveyance control unit performs the holding / release switching operation of the plate by the holding unit, the forward / backward movement operation of the holding unit by the holding unit driving means, and the reciprocating movement operation. Control according to the timing.

  The present invention preferably includes a corner grinding means for grinding the corner of the plate-like object.

  By providing the corner grinding means, it is possible to perform grinding of the corner of the plate-like object in the same production line in addition to grinding of the end face by the grinding member.

  The corner grinding means of the present invention comprises a corner grinding member for grinding a corner of the plate-like object, and supports the corner grinding member, and the corner grinding member is supported with respect to the corner of the plate-like object. Corner grinding member driving means for moving forward and backward, and corner grinding for controlling the forward / backward movement operation of the corner grinding member by the corner grinding member driving means based on the shape information stored in the storage means And a control unit.

  The corner grinding member is brought into contact with the corner of the plate-like object to grind the corner. For this purpose, the corner contact position of the corner grinding member is controlled by the corner grinding control unit. In other words, the corner grinding control unit performs feed-forward control of the forward and backward movement operation of the corner grinding member by the corner grinding member driving unit based on the shape information of the plate-like object stored in the storage unit, thereby performing corner control. The corner contact position of the partial grinding means is set. Thereby, the corner can be smoothly ground by the corner grinding member.

  The present invention provides a corner grinding member replacement in which the corner grinding member is removed from the corner grinding member driving means, and another corner grinding member is attached to the corner grinding member driving means to replace the corner grinding member. Preferably means are provided.

  If the corner grinding member is replaced manually, the continuous conveyance of the plate-like material must be stopped, and the time required for replacing the corner grinding member becomes longer, so the process work time is shortened. I can't.

  In the present invention, since the corner grinding member replacement means is provided, the replacement time of the corner grinding member can be shortened, and the process work time can be shortened.

  In order to provide the corner grinding member replacement means, it is necessary to secure a wide space below the corner grinding member. Therefore, the spindle base of the corner grinding member is installed above the conveying path of the plate-like object. As a result, a wide space for installing the corner grinding member replacement means can be secured below the corner grinding member, and the corner grinding member replacement means is installed using this space. Replacement is now possible.

  The present invention preferably includes corner support means for supporting the lower surface inside the corner of the plate-like object.

  By providing the corner support means, the corner of the plate-like object is supported horizontally without being bent, so that the corner of the plate-like object can be stably ground by the corner grinding member.

  The corner support means according to the present invention includes a corner support member that supports the lower surface of the plate-like object, and moves the corner support member below the lower surface, and applies the corner support member to the lower surface. A corner support member driving unit that moves so as to contact, and a corner support member that controls movement of the corner support member by the corner support member driving unit based on the shape information stored in the storage unit And a control unit.

  The corner support member is in contact with the lower surface of the plate-like object, and at this time, the corner of the plate-like object needs to be supported to such an extent that the corner of the plate-like object does not hang down. For this purpose, the support position of the plate-like object by the corner support member is controlled by the corner support member control unit. That is, the corner support member control unit performs feedforward control on the movement position of the corner support member by the corner support member driving unit based on the shape information of the plate-like object stored in the storage unit, thereby performing the corner control. The support position of the plate-like object by the part support member is set.

  Thereby, since the corner part of a plate-shaped object is supported horizontally without bending, this invention can suppress the position shift of the height of the corner part of a plate-shaped object, and the grinding surface of a corner grinding member. it can. In addition, the corner of the plate-like object has a large amount of grinding, and the plate-like object is likely to vibrate, but by supporting the corner of the plate-like object with the corner support member, the vibration of the plate-like object can be suppressed. it can. Therefore, if the corner grinding member and the corner support means are used, the corner of the plate-like object can be stably ground.

  According to the plate-like product manufacturing apparatus and method, and the plate-like end surface grinding apparatus and end-face grinding method according to the present invention, even plate-like items having different sizes flowing continuously are obtained. This improves the grinding efficiency of the end of the process and shortens the process work time.

The block diagram which showed the structure of the manufacturing apparatus of the glass plate which concerns on embodiment Plan view of the end surface grinding apparatus of the embodiment The top view of the 1st end surface grinding part of an embodiment The principal part perspective view of the 1st end surface grinding part shown in FIG. The perspective view which showed the whole structure of the conveying means of embodiment Block diagram showing the control system by the transport controller The block diagram which showed the control system of the end surface grinding apparatus of embodiment Block diagram showing grinding wheel movement control system The perspective view which showed the structure of the corner grinding part of embodiment Block diagram showing control system of corner grinding machine Block diagram showing the control system of the corner support drive unit Enlarged perspective view of the main part showing the structure of the corner support drive unit Side view of grinding wheel changer Explanatory drawing for defining names of each part of glass plate Explanatory drawing where the end of the glass plate is bent and the end face is ground

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a plate-like product manufacturing apparatus and method, and a plate-like end face grinding apparatus and end face grinding method according to the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a glass plate manufacturing apparatus 10 according to an embodiment of the present invention.

  The manufacturing apparatus 10 includes a forming unit 12, a cutting unit 14, a conveying unit 16, a grinding unit 18, and a packing unit 20 from the front stage to the rear stage of the manufacturing process.

  The forming means 12 is a means for forming molten glass into a glass ribbon (strip-like plate), and examples of the forming method include a forming method such as a float method or a fusion method.

  The cutting means 14 is means for cutting the glass ribbon formed and continuously conveyed by the forming means 12 into a plurality of glass plates (plates) having different sizes. For example, a device that cuts the glass ribbon by bending it after cutting the surface of the glass ribbon, a device that cuts by a laser, or the like can be used. The cutting direction of the glass ribbon by the cutting means 14 may be only the width direction of the glass ribbon, or may be the width direction and the length direction of the glass ribbon as described in Patent Document 1.

  The cutting means 14 acquires tracking information (glass plate shape information) corresponding to the shape of the cut glass plate, etc., and this tracking information is used as position information and time information when each member of the grinding means 18 is operated. used. The means for acquiring the tracking information is not limited to the cutting means 14, and may be a means provided on the upstream side of the grinding means 18 in the conveyance direction of the glass plate, for example, a shape acquisition means such as an infrared sensor. . The glass plate cut by the cutting means 14 is continuously transferred to the conveying means 16. Therefore, the conveyance time of the glass plate between a cutting | disconnection means and a conveyance means can be shortened.

  The conveyance means 16 is a means for continuously conveying the glass plates having different sizes cut by the cutting means 14 toward the grinding means 18, and in the embodiment, means having a pad for sucking and holding can be mentioned. Therefore, the glass plate is continuously conveyed from the forming means 12 to the grinding means 18 through the cutting means 14 without being stopped from the state of the glass ribbon. The transport unit 16 will be described later.

  Although the details of the grinding means 18 will be described later, the grinding means of the embodiment is an end face chamfering grindstone (grinding means) for grinding and chamfering the end face of the glass plate. During grinding with a support roller (advancing / retracting support means) that contacts and supports the edge of the glass plate, a corner chamfering grindstone (corner grinding means) that grinds four corners of the glass plate, and a corner chamfering grindstone It is comprised from the pad (corner support means) etc. which support the corner vicinity of a glass plate. The corner chamfering grindstone and the pad are not essential.

  The operation of each member of the grinding means 18 is controlled based on the tracking information described above, that is, the operation is feedforward controlled so as to be able to cope with glass plates having different sizes. Therefore, even when glass plates having different sizes are conveyed to the grinding means 18, chamfering of the end surfaces and grinding of the corners are performed smoothly.

  The packing means 20 is a device for loading the glass plates processed by the grinding means 18 and continuously conveyed onto a packing container such as a pallet, and includes a robot having a large number of suction pads for sucking the glass plates.

  According to the glass plate manufacturing apparatus 10 configured as described above, first, the glass ribbon formed by the forming means 12 is cut into a predetermined rectangular glass plate by the cutting means 14 while being conveyed. Next, while the cut glass plate is conveyed by the conveying means 16, the end surface and the corner of the glass plate are ground by the grinding means 18, and this glass plate is packed on the pallet by the packing means 20.

  In the glass plate manufacturing apparatus 10 according to the embodiment, the glass plate having different sizes cut by the cutting unit 14 is conveyed by the conveying unit 16, and the end surface of the glass plate is ground by the grinding unit 18. Further, in the grinding means 18, the end face chamfering grindstone and the support roller are previously controlled at the optimum positions according to the size of the glass plate, so that the end face and the corner can be ground smoothly. Therefore, even if it is the glass plate from which the size differs continuously conveyed from the cutting means 14, the end surface and corner part can be ground to a desired shape.

  Thereby, according to the glass plate manufacturing apparatus 10 of the embodiment, the end face can be chamfered to a desired shape even if the glass plates are continuously flowing in different sizes. Work time can be shortened.

  Next, based on FIG. 2, the specific structure of the end surface grinding apparatus 22 of embodiment provided with the conveyance means 16 and the grinding means 18 is demonstrated. FIG. 2 is a plan view of the end surface grinding device 22.

  In the end surface grinding apparatus 22 shown in the figure, a first end surface grinding unit 24, a second end surface grinding unit 26, and a corner grinding unit 28 are arranged from the upstream side to the downstream side in the conveying direction of the glass sheet G. Configured. The first end surface grinding unit 24 and the second end surface grinding unit 26 have the same configuration except that the end surfaces to be chamfered are different.

  On the upstream side of the first end surface grinding section 24, the conveying means 16 that conveys while supporting the lower surface of the glass plate G, and the conveyance that supports and conveys both ends of the glass plate G held by the conveying means 16. A roller 32 is provided. A known positioning device (not shown) for positioning different size glass plates G continuously conveyed from the cutting means 14 of FIG. 1 via a transfer machine (not shown) is provided upstream of the conveying roller 32. Installed. The central portion of the lower surface of the glass plate G positioned by the positioning device is sucked and held by the transport means 16 and transported toward the arrow A in the drawing of FIG. During this conveyance, both end faces Ga, Gb of the glass plate G are supported by support rollers (corner support members) of the advancing / retreating support means 34, 34 described later, while the both end faces Ga, Gb are grinding means. Chamfered by 18 end chamfering grindstones (grinding members) 36, 36. That is, the conveyance means 16 adsorbs and holds the glass plate G and conveys the glass plate G in the direction along both end faces Ga and Gb where the glass plate G is ground, that is, in the direction of the arrow A. The transport roller 32 may be used when the size of the glass plate G held by the transport means 16 is large and the end of the glass plate G may be bent and damaged by its own weight. If the conveyance roller 32 is a member that can support and convey the end of the glass plate G, its shape and conveyance method are not limited, and a method of conveying while supporting the end of the glass plate G with a belt, or gas May be ejected to lift and support the end portion of the glass plate G while being transported.

  Next, based on FIGS. 3 to 5, a specific configuration of the embodiment of the end surface grinding unit 24 including the grinding unit 18 and the transport unit 16 will be described.

  3 is a plan view of the first end surface grinding portion 24, FIG. 4 is a perspective view of the main part of the first end surface grinding portion 24, and FIG.

  The transport means 16 includes a pad (holding portion) 38 that sucks and holds the central portion of the lower surface of the glass plate G. Further, the pad 38 is moved back and forth in the vertical direction with respect to the lower surface of the glass plate G, and is moved along the transport direction of the glass plate G to reciprocate between the transport start position and the transport end position. The pad drive section (holding section drive means) 40 shown in FIG. Furthermore, the conveyance control part 42 shown in FIG. 6 which controls the adsorption | suction holding / release switching operation | movement of the glass plate G by the pad 38, the said back-and-forth movement operation | movement of the pad 38 by the pad drive part 40, and the said reciprocating movement operation is provided. Yes.

  The pad 38 shown in FIG. 5 is formed in a rectangular shape having long sides in the transport direction, and blocks 44 and 44 constituting a linear motion guide are fixed to both short sides. The blocks 44 and 44 are fitted to rails 46 and 46 so as to be movable up and down, and the rails 46 and 46 are erected on a base 48. A servo motor 50 is fixed to the base 48, and a vertical feed screw 52 is connected to the output shaft of the servo motor 50. A taper block 54 is screwed onto the vertical feed screw 52, and this taper block 54 is slidably attached to a rail 56 fixed to the base 48 via a block 58. Further, the lower tapered surface of the tapered block 60 is slidably contacted with the upper tapered surface of the tapered block 54, and the tapered block 60 is fixed to the lower portion of the pad 38. Accordingly, when the servo motor 50 is rotated forward / reversely, the taper block 54 reciprocates, so that the pad 38 is moved back and forth with respect to the lower surface of the glass plate G via the taper block 60. As shown in FIG. 6, the servomotor 50 is controlled to start / stop switching operation and forward / reverse operation by the conveyance control unit 42 via the pad driving unit 40.

  As shown in FIG. 5, the lower portion of the base 48 is fitted to a pair of rails 62, 62 so as to be freely movable, and a feed screw 64 disposed in parallel with the rails 62, 62 is provided between the rails 62, 62. It is screwed. The feed screw 64 is connected to the output shaft of the servo motor 66. Therefore, when the servo motor 66 is rotated forward / reversely, the pad 38 is moved horizontally along the transport direction of the glass plate G via the base 48, and is reciprocated between the transport start position and the transport end position. Let As shown in FIG. 6, the servo motor 66 is controlled to start / stop switching operation and forward / reverse operation by the conveyance control unit 42 via the pad driving unit 40.

  The pad 38 shown in FIGS. 3 to 5 has end chamfering grindstones 36 and 36 from a conveyance start position (a position indicated by a solid line in FIG. 3) for holding the glass plate G continuously conveyed by the transfer machine described above. The glass plate G is transported in the direction of arrow A to a transport end position (position indicated by a broken line in FIG. 3) corresponding to the grinding end position. For this reason, the pad 38 is moved back and forth with respect to the lower surface of the glass plate G by the pad drive unit 40 of FIG. 6 and is reciprocated between the transfer start position and the transfer end position.

  Further, the transport control unit 42 transports the holding / release switching operation of the adsorption of the glass plate G by the pad 38, the forward / backward movement operation of the pad 38 by the pad driving unit 40, and the reciprocating movement operation to the transport start position. It controls according to the timing of the coming glass plate G.

  That is, when the glass plate G transferred by the transfer machine onto the pad 38 at the transfer start position is positioned on the pad 38 by the positioning device, the transfer control unit 42 starts the suction holding operation of the pad 38. Then, the servo motor 66 is controlled to move the pad 38 forward. Thereby, the glass plate G positioned at the conveyance start position is sucked and held by the pad 38. Thereafter, the transport control unit 42 controls the servo motor 66 to move the pad 38 toward the transport end position. During this movement, both end faces Ga and Gb of the glass plate G sucked and held by the pad 38 are ground and chamfered by the end face chamfering grindstones 36 and 36. When the pad 38 is located at the conveyance end position, the conveyance control unit 42 releases the suction holding operation of the pad 38 and controls the servo motor 50 to retract the pad 38 downward from the lower surface of the glass plate G. . Thereafter, the servo motor 66 is controlled to return the pad 38 from the conveyance end position to the conveyance start position. By repeatedly performing this operation, chamfering of both end faces Ga and Gb of the glass sheet G that is continuously conveyed is performed.

  The pad 38 may hold the entire lower surface of the glass plate G, but adopts a configuration in which the central portion of the lower surface of the glass plate G is adsorbed at one point, a plurality of points, linearly, or planarly. It is preferable to simplify the configuration of the pad 38. Alternatively, a plurality of small pads may be provided, and the number of pads that perform the suction operation may be selected according to the size of the glass plate G. Furthermore, it is preferable that the positioning position of the glass plate G at the conveyance start position is a position where the pad 38 is located at the center of the lower surface of the glass plate G. Thereby, even if it is the glass plate G from which size differs, since the center part of the lower surface of the glass plate G is always adsorbed-held by the pad 38, the glass plate G can be conveyed stably. The pad 38 may be vacuum suction, or may be other means such as electrostatic suction or sticking with an adhesive.

  As shown in FIG. 3, advancing / retreating support means 34, 34 and end face chamfering grindstones 36, 36 are arranged at the center of the first end surface grinding part 24.

  The advancing / retreating support means 34, 34 are installed on both sides of the conveyance path of the glass plate G by the pad 38, and a plurality of rotatable support rollers (roller members) 68, 68... And support rollers 68, 68. And a roller moving part (roller member support means) for moving the support rollers 68, 68... In a direction toward or away from the end face with respect to the conveying direction of the glass plate G. Although the roller moving unit is not shown, a feed screw operated by a servo motor is an example.

  The support rollers 68, 68... Are in contact with the lower surface of the glass plate G being conveyed, and in the direction of approaching the end surfaces Ga, Gb with respect to the conveying direction of the glass plate G, depending on the end surface position of the glass plate G to be ground. Or it advances and retreats in the direction of leaving | separating, and supports the edge part by the side surfaces Ga and Gb side of the glass plate G. FIG. In the embodiment, the support rollers 68, 68... Are moved back and forth in a direction orthogonal to the arrow A which is the conveyance direction of the glass plate G. The supporting rollers 68, 68... May be moved forward and backward with respect to the conveying direction of the glass plate G.

  The support position of the glass plate G by the support rollers 68, 68... Is set to a position where the end of the glass plate G does not droop greatly due to its own weight. This is to suppress the error in the vertical position between the end portion of the glass sheet G and the end face chamfering grindstone 36 as much as possible in the grinding process by the end face chamfering grindstone 36 in the next process.

  Further, as shown in FIG. 7, the operation of the advance / retreat support means 34 is controlled by the position controller 70 together with the conveying means 16 and the grinding means 18. The position control unit 70 has storage means. In this storage means, the shape information of the glass plate G included in the tracking information of the glass plate G obtained from the shape information acquisition means 15 given to the cutting means 14 is stored. The position control unit 70 determines the advance / retreat distance of the support rollers 68, 68,... Of the advance / retreat support means 34 and the position of the end chamfering grindstone 36 of the grinding means 18 based on the shape information of the glass sheet G stored in the storage means. Feed forward control. That is, the position control unit 70 controls the roller moving unit to control the advance / retreat distance of the support rollers 68, 68.

  The support rollers 68 are in contact with the lower surface of the glass plate G to support the glass plate G. At this time, the glass plate G is supported to such an extent that the end portion of the glass plate G does not hang down due to its own weight. Therefore, the support position of the glass substrate G of the support rollers 68, 68... Is controlled by the position control unit 70. That is, the position control unit 70 performs feedforward control of the advance / retreat movement of the roller moving unit based on the shape information of the glass sheet G stored in the storage unit, and controls the advance / retreat distance of the support rollers 68, 68. By doing so, the support position of the glass substrate G of the support rollers 68, 68... Is set. Thereby, at the time of the grinding process by the grinding means 18, the drooping of the edge part of the glass plate G can be prevented, and an end surface can be ground to a desired shape. For example, in the case of a glass plate G having a thickness of 0.7 mm, the distance from the outer end surface of the support roller 68 to the end surface of the glass plate G is set to 10 mm to prevent the end of the glass plate G from drooping due to its own weight. it can.

  Conventionally, when grinding, if the movement of the edge of the glass plate is not restricted to some extent, there is a concern that the quality will deteriorate due to vibration during grinding, etc. The movement of the end portion of the glass plate G was restricted by being sandwiched between the two. However, since the movement of the end portion of the glass plate G is not restricted as in the embodiment, the end portion of the glass plate G is guided to the groove of the grindstone 36, so that vibration during grinding, etc. It was found that a uniform ground surface could be obtained without degrading quality.

  On the other hand, when the lower surface of the glass plate G is supported only by the support rollers 68, 68 as in the embodiment, when the end surfaces Ga and Gb of the glass plate G are brought into contact with the grooves of the end surface chamfering grindstone 36, Even when the height adjustment of both the end faces Ga, Gb and the groove is not strictly performed, the end of the glass plate G is deformed according to the height of the groove, and both the end faces Ga, Gb and the groove The height is the desired position. Therefore, the end surfaces Ga and Gb of the glass plate G can be ground to a desired shape without strictly adjusting the heights of both the end surfaces Ga and Gb of the glass plate G and the grinding surface of the end surface chamfering grindstone 36.

  As shown in FIGS. 3 and 4, the end chamfering grindstone 36 of the grinding means 18 is a rough grinding grindstone 72 from the upstream side toward the downstream side in the conveying direction of the glass sheet G in the installation region of the support rollers 68, 68. A medium grinding wheel 74 and a finish grinding wheel 76 are sequentially arranged. Further, as shown in FIG. 8, the grinding means 18 supports these grindstones 72, 74, and 76 and moves the grindstone drive unit (grinding member drive) in the vertical and horizontal directions with respect to the end face of the glass plate G. Means) 78. In addition, the vertical direction and the horizontal direction with respect to the end surface of the glass plate G are the directions of arrows Z and X shown in FIG.

  The grindstone driving unit 78 shown in FIG. 8 is controlled by the position control unit 70. That is, the position control unit 70 performs feedforward control of the forward / backward movement operation of the grindstones 72, 74, 76 by the grindstone driving unit 78 based on the shape information of the glass sheet G stored in the storage unit, and the grindstones 72, 74, 76 Is previously controlled to a position suitable for the size of the glass plate G.

  That is, the end surface contact position of the grindstones 72, 74, and 76 is feedforward controlled by the position control unit 70 in order to chamfer the end surface by contacting the end surface of the glass plate G with the grindstones 72, 74, and 76. That is, the position control unit 70 performs feedforward control of the advancing and retreating movement operations of the grindstones 72, 74, and 76 by the grindstone driving unit 78 based on the shape information of the glass sheet G stored in the storage unit, thereby the grindstone 72. 74, and 76 are set. Thereby, the grinding process by the grindstones 72, 74, and 76 can be performed smoothly. In addition, as the grindstone drive part 78, the feed screw provided with the servomotor etc. are mentioned as an example.

  Next, the operation of the first end surface grinding part 24 configured as described above will be described.

  First, the glass plate G transferred continuously from the cutting means 14 is held by the pad 38 of the conveying means 16, and the glass plate G is ground on both end surfaces Ga and Gb to be ground while being held by the pad 38. It is conveyed in the direction along the direction, that is, the direction along the arrow A.

  Next, the grindstones 72, 74, and 76 are pressed against both end faces Ga and Gb of the glass sheet G that are conveyed by the conveying means 16 and the support rollers 68, 68, and the end faces are ground.

  In this case, the supporting rollers 68, 68... May have a conveying force for the glass plate G. However, since the conveying means 16 has a conveying force, the supporting rollers 68, 68. It does not have to be. The end surface of the glass plate G being conveyed is ground and chamfered by the grindstones 72, 74, 76 positioned at the grinding position.

  Here, in the first end surface grinding section 24, the shape information acquisition means 15 for acquiring the shape information of the glass plate G is provided on the upstream side of the grindstones 72, 74, and 76 in the conveyance direction of the glass plate G. The shape information obtained by the information acquisition unit 15 is stored in the storage unit of the position control unit 70. And the position control part 70 feed-forward-controls the advancing / retreating distance of the support rollers 68 and 68, and the grinding position by the grindstones 72, 74, 76 based on the shape information of the glass plate G memorize | stored in the memory | storage means.

  Thereby, in the 1st end surface grinding part 24, even if it is the glass plate G from which the size is conveyed continuously, while conveying the glass plate G as it is, both end surface Ga of the glass plate G, Gb, Can be ground into a desired shape. Therefore, if the end surface of the glass plate G is chamfered using the first end surface grinding part 24, the grinding efficiency of the both end surfaces Ga and Gb of the glass plate G can be improved, and the process work time can be shortened.

  Moreover, according to the 1st end surface grinding part 24, according to the size of the glass plate G conveyed continuously, the support rollers 68 and 68 ... approach end surface Ga and Gb with respect to the conveyance direction of the glass plate G. Since the glass plate G advances or retreats in the direction in which the glass plate G moves away from the direction, the sag of the end of the glass plate G can be prevented even if the glass plate G is large in size. Therefore, breakage of the glass plate G can be prevented, and the end surface of the glass plate G can be chamfered with high accuracy.

  The glass plate G whose both end surfaces Ga and Gb are chamfered by the first end surface grinding unit 24 is transferred to the upstream side of the second end surface grinding unit 26 by a transfer machine (not shown).

  The second end surface grinding unit 26 is installed so that the conveyance direction of the glass plate G is perpendicular to the conveyance direction of the first end surface grinding unit 24, and the conveyance means 16 of the first end surface grinding unit 24. The conveying means 16A, the grinding means 18A, the advancing / retreating support means 34A, and the conveying roller 32A having the same configuration and the same operation as the grinding means 18, the advance / retreat support means 34, and the conveying roller 32 are conveyed in the direction of arrow B. Both end faces Gc and Gd are chamfered. The operations of the transport unit 16A, the grinding unit 18A, the advance / retreat support unit 34A, and the transport roller 32A are omitted.

  The glass sheet G that has passed through the second end surface grinding part 26 is conveyed to the corner grinding part 28 by the conveying means 16A. Here, the glass plate G is supported by the corner grindstones 82 and 82 while the vicinity of the corner of the lower surface is supported by the pads 80 and 80 shown in FIG. 9 arranged on both sides of the conveyance path during the conveyance by the conveyance means 16A. The four corners are preferably ground.

  By providing the corner grindstones 82 and 82 in the end surface grinding device 22, the corners of the glass plate G can be ground in the same production line in addition to the chamfering of the end surfaces by the grinding means 18 and 18A.

  The corner grinding apparatus (corner grinding means) 84 according to the embodiment having the corner grindstones 82 and 82 supports the corner grindstone 82 as shown in FIG. By the corner grinding drive unit 86 (corner grinding member drive unit) 86 that moves forward and backward, and the shape information of the glass sheet G stored in the storage unit of the position control unit 70. A corner grinding control unit 88 that controls the forward and backward movement of the corner grindstone 82.

  The corner grindstone 82 is abutted against the corner of the glass plate G to grind the corner, and for this purpose, the corner abutment position and the movement locus (A, B in FIG. 9) of the corner grindstone 82 are It is controlled by the corner grinding control unit 88. That is, the corner grinding control unit 88 feeds forward / backward movement operation of the corner grindstone 82 by the corner grinding driving unit 86 based on the shape information of the glass sheet G stored in the storage unit of the position control unit 70. By controlling, the corner contact position and the movement locus (A and B in FIG. 9) of the corner grindstone 82 are set. Thereby, grinding with the corner grindstone 82 can be performed smoothly. 9 is a locus for grinding the corner on the front end side in the conveyance direction of the glass plate G, and the movement locus B in FIG. 9 is for grinding the corner on the rear end side in the conveyance direction of the glass plate G. It is a locus to do.

  Further, the corner grinding device 84 of the embodiment is provided with a pad 80 that supports the lower surface inside the corner of the glass plate G.

  By providing the pad 80, the corner of the glass plate G is supported horizontally without being bent, so that the corner of the glass plate G can be stably ground by the corner chamfering grindstone 82.

  The lower surface inside the corner of the glass plate G includes not only the lower surface from the corner of the glass plate G toward the center of the glass plate G but also the lower surface from the corner to be ground to the next corner. It is.

  As shown in FIG. 11, the corner support portion (corner support means) 89 of the embodiment having the pad 80 moves the pad 80 so that the pad 80 moves below the lower surface and contacts the lower surface. A corner for controlling the movement of the pad 80 by the corner support driving unit 90 based on the shape information of the glass plate G stored in the support driving unit (corner support member driving unit) 90 and the storage unit of the position control unit 70. Part support control part (corner part support member control part) 92 is provided.

  As shown in FIG. 12, the corner support drive unit 90 includes a feed screw 96 including a servo motor 94 that moves the pad 80 in the vertical direction (arrow Z direction), and the conveyance direction (arrow B direction) of the glass sheet G. A feed screw 100 having a servo motor 98 for horizontal movement is provided. As a result, the pad 80 moves along the movement locus C in FIG. Moreover, it has the feed screw 104 provided with the servomotor 102 which moves horizontally in the direction (arrow D direction) orthogonal to the conveyance direction of the glass plate G.

  The pad 80 is in contact with the lower surface of the glass plate G and supports the corners of the glass plate G to such an extent that the corners of the glass plate G do not hang down due to their own weight. Therefore, as shown in FIG. 11, the support position of the glass plate G by the pad 80 is controlled by the corner support control unit 92. That is, the corner support control unit 92 performs feedforward control of the movement position of the pad 80 by the corner support driving unit 90 based on the shape information of the glass sheet G stored in the storage unit of the position control unit 70. Thus, the support position of the glass plate G by the pad 80 is set.

  Thus, according to the corner support portion 89 of the embodiment, the corner of the glass plate G is supported horizontally without being bent, so the height of the corner of the glass plate G and the grinding surface of the corner grindstone 82 The difference with the height of can be suppressed. Further, the corner of the glass plate G has a large amount of grinding, and the glass plate G is likely to vibrate. However, by supporting the corner of the glass plate G with the corner support portion 89, the vibration of the glass plate G is suppressed. Can do. Therefore, if the corner grinding device 84 of the embodiment is used, the corner of the glass plate G can be stably ground.

  On the other hand, FIG. 12 shows a large number of support rollers 106, 106... Disposed in the vicinity of the corner support portion 89. These support rollers 106, 106... Are rotatably supported by the same frame 110, and the lower portion of the frame 110 is slidably supported by a rail 112 orthogonal to the conveying direction of the glass plate G. A nut 114 is fixed to the frame 110, and a feed screw 116 is screwed to the nut 114 in a direction orthogonal to the conveying direction of the glass plate G. An output shaft of a servo motor 118 is connected to the feed screw 116. Therefore, when the servo motor 118 is rotated forward / reversely, the support rollers 106, 106... Advance and retreat in a direction (arrow E direction) perpendicular to the conveying direction of the glass sheet G through the frame 110 by the feed action of the feed screw 116. Moved. By controlling the amount of movement like the advance / retreat support means 34, 34A, the end of the glass plate G does not hang down due to its own weight. Therefore, the corner of the glass plate G can be ground into a desired shape in a state where the end of the glass plate G does not hang down due to its own weight. The advancing / retreating drive unit of the support rollers 106, 106, etc., provided with the servo motor 118 can also be applied to the support rollers 68, 68 ....

  By the way, as shown in FIG. 2, the end face grinding apparatus 22 of the embodiment includes a grindstone exchanging machine (grinding member exchanging means) 120 for automatically exchanging the grindstones 72, 74, 76 and a grindstone for automatically exchanging the corner grindstone 82. An exchange machine (corner grinding member exchanging means) 122 is installed.

  The grindstone changer 120 is a device that removes used grindstones 72, 74, 76 from a spindle, attaches new grindstones 72, 74, 76 to the spindle, and replaces the grindstones 72, 74, 76. Similarly, the grindstone exchanger 122 is a device that removes a used corner grindstone 82 from the spindle, attaches a new corner grindstone 82 to the spindle, and replaces the corner grindstone 82.

  If the grindstones 72, 74, 76 and the corner grindstone 82 are exchanged manually, the continuous conveyance of the glass plate G must be stopped, and the grindstones 72, 74, 76 and the corner grindstone 82 can be replaced. The time required also becomes long.

  Since the end surface grinding device 22 of the embodiment includes the grindstone exchangers 120 and 122, the time required for exchanging the grindstones 72, 74, and 76 and the corner grindstone 82 can be shortened, and the process work time can be shortened. Can be planned.

  In order to install the grindstone exchangers 120 and 122, it is necessary to secure a wide space below the grindstones 72, 74 and 76 and the corner grindstone 82. Therefore, the spindle bases of the grindstones 72, 74, 76 and the corner grindstone 82 were installed above the conveyance path of the glass substrate G. As a result, a wide space for installing the grindstone exchangers 120, 122 can be secured below the grindstones 72, 74, 76 and the corner grindstone 82, and the grindstone exchangers 120, 122 are installed in this space. , 76 and the corner grindstone 82 can be automatically exchanged.

  The conventional replacement work of the grindstones 72, 74, 76 and the corner grindstone 82 is performed by stopping the production line and exchanging time of about 30 seconds for one of the grindstones 72, 74, 76 and the corner grindstone 82. After that, removable time was required, but in the end face grinding device 22 of the embodiment, the grindstones 72, 74, 76 and the corner grindstone 82 can be replaced in about 6 seconds. No need to stop production line.

  The grindstone exchangers 120 and 122 are known devices. For example, the grindstone exchanger 120 of the grindstone 72 includes arms 126 having holders 124 and 124 that hold the grindstones at both ends as shown in FIG. The arm 126 is provided on the exchange main body 128 so as to be rotatable in the horizontal direction (arrow θ direction) and movable in the vertical direction (arrow Z direction), and is rotated by a driving force of a motor built in the exchange main body 128. A lifting operation is performed.

  The operation of the grinding wheel changer 120 at the time of grinding wheel exchange will be described. When the grindstone 72 attached below the spindle 73 is replaced with a new grindstone 72A mounted on the holder 124, the spindle 73 of the grindstone 72 movable in the vertical direction (arrow Z direction) is raised. Then, the exchange main body 128 is slid in the direction of arrow F toward the lower side of the spindle 73. Then, the empty holder 124 is engaged with the grindstone 72, the arm 126 is lowered in the Z direction, and the grindstone 72 is removed from the spindle 73. Next, the arm 126 is rotated 180 degrees so that the arm 126 moves up in the Z direction, and a new grindstone 72A is transferred from the holder 124 to the spindle 73 and mounted on the spindle 73. Thereafter, the exchange body 128 is retracted from the lower side of the spindle 73 to the side, and the spindle 73 is moved downward to position the grindstone 72A at a chamferable position. As described above, the grinding wheel is replaced in a short time.

  The spindle 73 is supported by a rail 132 of a spindle base 130 straddling above the conveying means 16 through a linear guide 134 so as to be movable in the horizontal direction. Thereby, the grindstone 72 is moved back and forth with respect to the end surface of the glass plate G held by the transport means 16. Further, the spindle 73 is moved in the horizontal direction by a feeding device (not shown) such as a ball screw device and moved forward, whereby the end face of the glass plate G held by the conveying means 16 is ground by the grindstone 72. . Moreover, by retreating, it is moved to the grindstone replacement position.

  In the embodiment, the glass plate G is exemplified as the plate-like material. However, the present invention is not limited to this, and the present invention can be applied to any plate-like material that requires end face grinding.

  In the embodiment, in the end surface grinding apparatus 22 shown in FIG. 2, only one conveying means 16 and 16A are provided, but the number is not limited to one. By installing a plurality of conveying means 16 and 16A, a plurality of glass plates G can be put into the end surface grinding device 22, and productivity can be improved.

  In the embodiment, first, both end faces Ga, Gb of the glass plate G are chamfered, and then both end faces Gc, Gd of the glass plate G are chamfered. However, the order of chamfering is not limited to this. Alternatively, both end faces Gc and Gd may be chamfered, and then both end faces Ga and Gb may be chamfered.

  In the embodiment, the positional relationship between the first end surface grinding unit 24 and the second end surface grinding unit 26 is a right angle. However, the positional relationship is not limited to a right angle. , 26 may be a straight line. In this case, a transfer machine for turning the glass sheet G 90 degrees is required between the first end face grinding part 24 and the second end face grinding part 26.

  In the embodiment, when the end surface of the glass plate G is chamfered, both end portions are supported by the support rollers 68, but the support member is not limited to the rollers. The end surface of the glass plate G may be chamfered while supporting and conveying both ends of the glass plate G with a belt to which a driving force is applied.

  DESCRIPTION OF SYMBOLS 10 ... Glass plate manufacturing apparatus, 12 ... Forming means, 14 ... Cutting means, 15 ... Shape information acquisition means, 16, 16A ... Conveyance means, 18, 18A ... Grinding means, 20 ... Packing means, 22 ... End face grinding apparatus, 24 ... 1st end surface grinding part, 26 ... 2nd end surface grinding part, 28 ... Corner part grinding part, 32, 32A ... Conveyance roller, 34, 34A ... Advance / retreat support means, 36 ... End face chamfering grindstone, 38 ... Pad, DESCRIPTION OF SYMBOLS 40 ... Pad drive part, 42 ... Conveyance control part, 44 ... Block, 46 ... Rail, 48 ... Base, 50 ... Servo motor, 52 ... Vertical feed screw, 54 ... Taper block, 56 ... Rail, 58 ... Block, 60 ... Taper block, 62 ... Rail, 64 ... Feed screw, 66 ... Servo motor, 68 ... Support roller, 70 ... Position controller, 72 ... Rough grinding wheel, 73 ... Spindle, 74 ... Medium grinding wheel, 76 ... Grinding wheel for up-grinding, 78 ... Wheel driving unit, 80 ... Pad, 82 ... Corner grinding wheel, 84 ... Corner grinding device, 86 ... Corner grinding driving unit, 88 ... Corner grinding control unit, 89 ... Corner support unit , 90 ... corner support drive unit, 92 ... corner support control unit, 94 ... servo motor, 96 ... feed screw, 98 ... servo motor, 100 ... feed screw, 102 ... servo motor, 104 ... feed screw, 106 ... support Roller, 110 ... Frame, 112 ... Rail, 114 ... Nut, 116 ... Feed screw, 118 ... Servo motor, 120 ... Whetstone changer, 122 ... Whetstone changer, 124 ... Holder, 126 ... Arm, 128 ... Switch body, 130 ... Spindle Base, 132 ... Rail, 134 ... Linear motion guide

Claims (13)

Cutting means for cutting the band-shaped plate-shaped object formed into a band shape into a predetermined rectangular plate-shaped object;
Conveying means for conveying the rectangular plate-like material cut by the cutting means;
Grinding means for grinding an end face of the rectangular plate-like object while conveying the rectangular plate-like object by the conveying means;
Packing means for packing the rectangular plate-shaped object whose end face has been ground by the grinding means;
An apparatus for producing a plate-like object comprising: A cutting step of cutting the band-shaped plate-shaped object formed into a band shape into a predetermined rectangular plate-shaped object;
A grinding step of grinding an end face of the rectangular plate-shaped material while conveying the rectangular plate-shaped material cut by the cutting step;
A packing step of packing the rectangular plate-shaped object whose end face has been ground by the grinding step;
A method for producing a plate-like object comprising: A plate-like end surface grinding apparatus for grinding an end face of the plate-like object while conveying the plate-like object in a predetermined direction,
Conveying means for holding the plate-like object and conveying the plate-like object in a predetermined direction along the end face to be ground;
Advancing / retreating support means for supporting the plate-like object by advancing and retreating in a direction approaching or leaving the end surface with respect to the transport direction according to an end surface position of the plate-like object to be ground;
Grinding means for pressing and grinding the end surface of the plate-like object conveyed by the conveying means and the advance / retreat support means;
Shape information acquisition means provided on the upstream side of the grinding means in the conveying direction of the plate, and acquiring shape information of the plate,
Storage means for storing the shape information obtained by the shape information acquisition means;
A position controller for controlling the advance / retreat distance of the advance / retreat support means and the position of the grinding means based on the shape information stored in the storage means;
An apparatus for grinding an end face of a plate-like object. The advance / retreat support means includes:
A plurality of rotatable roller members for supporting the plate-like object;
Roller member support means for supporting the plurality of roller members and moving the plurality of roller members forward and backward in a direction approaching or leaving the end surface with respect to the transport direction;
The said position control part is an end surface grinding apparatus of the plate-shaped article of Claim 3 which controls the said advance / retreat movement of the said roller member support means, and controls the said advance / retreat distance of these roller members. The grinding means includes
A grinding member;
Grinding member driving means for supporting the grinding member and moving the grinding member forward and backward with respect to the end surface of the plate-like object,
The end surface grinding apparatus for a plate-like object according to claim 3 or 4, wherein the position control unit controls the position of the grinding means by controlling the forward / backward movement operation of the grinding member by the grinding member driving means.   6. The end face grinding of a plate-like object according to claim 5, further comprising a grinding member exchanging means for removing the grinding member from the grinding member driving means and attaching another grinding member to the grinding member driving means to exchange the grinding member. apparatus. The conveying means is
A holding part for holding the plate-like object;
Holding unit driving means for moving the holding unit forward and backward relative to the plate-like object, and moving the holding unit along the predetermined direction to reciprocate between a transfer start position and a transfer end position;
A conveyance control unit that controls the holding / release switching operation of the plate-like object by the holding unit, the forward / backward movement operation of the holding unit by the holding unit driving unit, and the reciprocating movement operation;
An apparatus for grinding an end face of a plate-like object according to any one of claims 3 to 6.   The end surface grinding apparatus for a plate-like material according to any one of claims 3 to 7, further comprising a corner grinding means for grinding a corner portion of the plate-like material. The corner grinding means is
A corner grinding member for grinding a corner of the plate-like object;
A corner grinding member driving means for supporting the corner grinding member and moving the corner grinding member forward and backward with respect to the corner of the plate-like object;
A corner grinding control unit for controlling the forward / backward movement operation of the corner grinding member by the corner grinding member driving unit based on the shape information stored in the storage unit;
The end surface grinding apparatus of the plate-shaped object of Claim 8 provided with.   A corner grinding member replacing means for removing the corner grinding member from the corner grinding member driving means and attaching another corner grinding member to the corner grinding member driving means to replace the corner grinding member. The end surface grinding apparatus for plate-like objects according to claim 9.   The end surface grinding apparatus of the plate-shaped object in any one of Claims 8-10 provided with the corner | edge part support means which supports the lower surface inside a corner part of the said plate-shaped object. The corner support means is
A corner support member that supports the lower surface of the plate-like object;
A corner support member driving means for moving the corner support member below the lower surface and moving the corner support member so as to contact the lower surface;
A corner support member control unit for controlling movement of the corner support member by the corner support member driving unit based on the shape information stored in the storage unit;
The end surface grinding apparatus of the plate-shaped object of Claim 11 provided with. A conveying step of holding the plate-like object by the conveying means and conveying the plate-like object in a predetermined direction along the end face to be ground;
With respect to the plate-like object conveyed by the conveying step, the advancing / retreating support means is advanced / retreated in a direction approaching or separating from the end surface with respect to the conveying direction according to the end surface position of the plate-like object to be ground, Supporting the plate-like object;
Grinding the end surface by pressing a grinding means against an end surface to be ground of the plate-like object transported by the transport means and the advance / retreat support means, and
On the upstream side of the grinding means in the conveying direction of the plate-like object, there is provided shape information acquisition means for acquiring shape information of the plate-like object, and the shape information obtained by the shape information acquisition means is stored by the storage means. An end surface grinding method for a plate-like object, wherein a position control unit controls the advance / retreat distance of the advance / retreat support means and the position of the grinding means based on the shape information stored in the storage means.

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