JP2013169622A - Double-sided machining device for glass plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double-sided machining device for a glass plate having excellent manufacturing efficiency, and capable of achieving high quality grinding machining.SOLUTION: A double-sided machining device 1 for a glass plate includes: a belt conveyor device 3 for horizontally supporting and linearly conveying the glass plate 2; and two linear conveying devices 5A and 5B including, on both sides thereof, suction cups 4A1, 4A1 and 4B1, 4B1 linearly reciprocating along the belt conveyor device 3, on respective both sides of the belt conveyor device 3, conveying, in a forward process, the glass plate 2 at a synchronous speed with the belt conveyor device 3 while vacuum-suctioning inner vicinities of both side edges 10, 10, and returning without the glass plate 2 in a backward process.

Description

  The present invention relates to an apparatus for processing both sides of a glass plate that linearly grinds a straight edge of a glass plate such as a liquid crystal display, a glass plate for a liquid crystal panel, a glass plate for a solar cell, a glass plate for furniture, and a glass plate for building.

  In particular, the present invention relates to a glass plate both-side processing apparatus that simultaneously grinds opposite sides of a glass plate by a grinding device disposed on both sides of a passage of the glass plate while linearly conveying the glass plate.

  Furthermore, it is related with the linear conveyance technique of the glass plate in the both sides processing apparatus of a glass plate especially.

  2. Description of the Related Art Conventionally, many glass plate both-side processing apparatuses are linearly conveyed while being sandwiched by belt conveyors arranged vertically on a glass plate.

  Also, as another glass plate conveyance method, a suction cup that performs linear reciprocation is provided in the center of the passage of the glass plate, and only in the forward stroke, the glass plate is vacuum-adsorbed on the lower surface to convey and grind both sides of the glass plate. Processing equipment also exists.

JP 2009-172768 A JP 2007-319983 A

  If a glass plate is pinched | interposed and conveyed by a belt conveyor, a glass plate will be continuously sent from the next to the next and production efficiency will be high. However, since the glass plate is sandwiched and conveyed, the accuracy of linear conveyance and constant-speed conveyance is unstable, and there is a problem that the glass plate escapes during grinding because the holding force of the glass plate is weak. .

  On the other hand, in the method of vacuum-adsorbing a glass plate and carrying it in a straight line, when the glass plate becomes a large plate size, the sequential conveyance efficiency of the glass plate is low and the processing productivity is low.

  This invention is made | formed in view of the said points, The place made into the objective is providing the both-sides processing apparatus of the glass plate which is good in production efficiency and can obtain a quality grinding process.

  The both side processing apparatus of the glass plate of this invention is the both side processing apparatus which carries out the simultaneous grinding process of the both sides of a glass plate with the grinding device arrange | positioned on both sides of the path | route of a glass plate, carrying out vacuum suction and conveying a glass plate linearly In the belt conveyor device that supports the glass plate horizontally and linearly feeds, and on both sides of the belt conveyor device, reciprocates linearly along the belt conveyor device. It is equipped with two linear conveyors that are equipped with suction cups on both sides that are vacuum-adsorbed near the inside, transported at a synchronous speed together with the belt conveyor device, and that return the return stroke in the sky. The linear conveying device is provided facing each other so that the upper surface of the belt conveyor device is sandwiched between the upper and lower sides. It made so as to linearly conveying the glass plate sequentially by performing by alternating the transport of by vacuum suction conveying the glass plate by vacuum suction from the lower surface from the upper surface.

  According to the both-side processing apparatus for glass plates of the present invention, a linear transport is provided in which suction cups are arranged on both sides of a belt conveyor device that horizontally supports and feeds the glass plates, and these suction cups reciprocate linearly along the belt conveyor device. Two devices are provided facing each other across the upper surface line of the belt conveyor device, and each of the linear conveying devices conveys by sucking the glass plate from the upper surface while moving the suction cups, and glass. Since the conveyance by vacuum suction of the plate from the lower surface is alternately performed, the glass plate can be supplied and conveyed one after another in a nearly continuous state, and therefore a grinding process close to continuous can be performed. The production capacity for grinding can be greatly improved.

  In addition, during conveyance, the glass plate is sucked and conveyed near the inside of both side edges subjected to grinding, so that both side edges subjected to grinding are supported firmly and accurately. As a result, accurate grinding can be performed.

  In addition, the inner edges of each side edge that undergoes grinding on the glass plate are firmly held in a suction-fixed state by the suction cup device that linearly advances, so that both side edges of the glass plate to be ground are on the planned grinding line. Since it is accurately positioned, held and conveyed in a straight line, high-precision grinding of the edges on both sides of the glass plate can be obtained.

  In the both sides processing apparatus of the glass plate of this invention, the said suction cup is elongate and may be provided in parallel with the linear conveyance direction.

  ADVANTAGE OF THE INVENTION According to this invention, the production efficiency is good and the both-sides processing apparatus of the glass plate from which a quality grinding process is obtained can be provided.

FIG. 1 is an explanatory front view of an example of an embodiment of the present invention. FIG. 2 is an explanatory plan view of an example of an embodiment of the present invention. FIG. 3 is a partially cutaway plan view of the embodiment shown in FIG. 4 is a cross-sectional view taken along line AA of FIG. FIG. 5 is a cross-sectional view of the example shown in FIG. 4 in which the transport position has changed. FIG. 6 is an explanatory view during the conveyance of the glass plate by the lower linear conveyance device. FIG. 7 is an explanatory view during the conveyance of the glass plate by the upper linear conveyance device.

  In the following, an embodiment of the apparatus for processing both sides of the present glass plate will be described with reference to FIGS. In addition, the both side processing apparatus 1 of this glass plate is called the both side processing apparatus 1 hereafter.

  Both side processing apparatuses 1 are provided with a feed start position L, a grinding area G, and a feed end position 7 according to the feed direction of the glass plate 2. In the grinding area G, grinding devices 30 and 30 are disposed on both sides 29 and 29 with the passage of the glass plate 2 interposed therebetween.

  In both side processing devices 1, a belt conveyor device 3 is placed on the upper surface of the conveying path of the glass plate 2 and supports the inner side of the glass plate 2 horizontally to feed the feed start position L, the grinding area. G and the feed end position 7 are provided linearly.

  The belt conveyor device 3 that prevents the inward sagging of the glass plate 2 and keeps the glass plate 2 in a horizontal position is driven by a common driving device 26 and has a plurality of juxtaposed widths. Narrow belt conveyor devices 25, 25, 25 are provided, and the drive device 26 is provided with a servo motor 27.

  In the both-side processing apparatus 1, two linear conveying apparatuses 5 </ b> A and 5 </ b> B are arranged facing each other across the upper surface 52 of the belt conveyor apparatus 3 that horizontally supports the glass plate 2 along the belt conveyor apparatus 3. Yes. Hereinafter, the linear conveying device 5B disposed above is referred to as an upper linear conveying device 5B, and the linear conveying device 5A disposed below is referred to as a lower linear conveying device 5A.

  The lower linear conveyance device 5A and the upper linear conveyance device 5B are also disposed through the feed start position L, the grinding area G, and the feed end position 7.

  The lower linear conveyance device 5A disposed on the lower side of the belt conveyor device 3 is elongated on both sides 53 and 53 of the belt conveyor device 3 from the lower side in cooperation with the upper linear conveyance device 5B. The suction cups 4A1, 4A1 are provided in parallel with the linear conveying direction and in an upward posture, and are reciprocated linearly along the belt conveyor device 3, and are disposed below the belt conveyor device 3. The upper straight conveying device 5B cooperates with the lower straight conveying device 5A to sandwich the belt conveyor device 3 from the upper side, and on both sides 53, 53, make the elongated suckers 4B1, 4B1 parallel to the linear conveying direction, And it is provided in a downward posture and is caused to reciprocate linearly along the belt conveyor device 3.

  The lower linear conveying device 5A is alternately supported by the suction cups 4A1, 4A1, and the upper linear conveying device 5B is alternately supported by the suction cups 4B1, 4B1 on the upper surface of the belt conveyor device 3 and supported horizontally. The inward and near portions on both sides (the inwardly close portions 6 and 6 of both edge edges 10 and 10 subjected to grinding) are vacuum-sucked, and the glass plate 2 is linearly conveyed in synchronization with the belt conveyor device 3.

  The suction cups 4A1 and 4A1 of the lower linear conveyance device 5A adsorb the glass plate 2 from the lower surface, and the suction cups 4B1 and 4B1 of the upper linear conveyance device 5B adsorb the glass plate 2 from the upper surface.

  The lower linear conveying device 5A includes a suction cup device 4A for holding the elongated suction cups 4A1 and 4A1 disposed on both sides 53 and 53 of the belt conveyor device 3 from below, and the suction cup device 4A facing upward, and the conveying direction of the glass plate 2 A traveling table 11 that reciprocates linearly along, guide rails 12 and 12 that hold the traveling table 11 so as to be linearly slidable, and a device that is installed on one end side of the guide rails 12 and 12 and that drives the traveling table 11 to reciprocate linearly. Means 13.

  The guide rails 12 and 12 that hold the traveling table 11 so that the linear motion is freely slidable are attached to the upper surface of the rail base 45 protruding from the machine base 37 along the belt conveyor device 3. The driving means 13 includes a ball screw nut attached to the carriage 11, a ball screw 15 screwed to the ball screw nut, and a servo motor 16 connected to the ball screw 15.

  The suction cup device 4A includes suction cups 4A1, 4A1 arranged on both sides of the belt conveyor device 3, and lifting devices 17 and 17 for holding the suction cups 4A1, 4A1 from below and moving the suction cups 4A1, 4A1 up and down. 4A1 and 4A1 are attached to the traveling platform 11 via a lifting device 17. The suction cup device 4 </ b> A, that is, the suction cups 4 </ b> A <b> 1, 4 </ b> A <b> 1 moves back and forth together with the traveling platform 11. That is, the respective suction cups 4A1 and 4A1 are moved back and forth between the feed start position L and the feed end position 7 on both sides 53 and 53 with the belt conveyor device 3 interposed therebetween, and at the feed start position L and the feed end position 7. Do.

  The upper linear conveyor device 5B, which is disposed on the upper side of the belt conveyor device 3 and sandwiches the belt conveyor device 3 from above in cooperation with the lower linear conveyor device 5A, is arranged on both sides 53 and 53 of the belt conveyor device 3, respectively. The suction cup device 4B that holds the long and narrow suction cups 4B1 and 4B1 from above, the suction cup device 4B is downwardly driven, and the carriage 19 that reciprocates linearly along the conveying direction of the glass plate 52; Guide rails 20 and 20 that are movable and slidable, and driving means 21 that reciprocally moves the traveling table 19 are provided.

  The guide rails 20, 20 are attached to a frame base 22 erected on both sides of the machine base 37 along the belt conveyor device 3 (parallel to the traveling direction of the glass plate 2). The driving means 21 includes a pinion gear 50 attached to the traveling base 19 and a rack 23 that meshes with the pinion gear. The rack 23 is attached to the frame base 22. The carriage 19 is driven by a pinion rack on both sides. The pinion gears on both sides are connected to servomotors 24 and 24, respectively, and the pinion gears 50 and 50 on both sides are driven synchronously.

  The suction cup device 4B of the upper linear transport device 5B includes suction cups 4B1, 4B1, a lift base 28 mounted with the suction cups 4B1, 4B1 facing downward, and a lift 18 that is mounted on the traveling base 19 and lifts the lift base 28. And elevating guide devices 44 and 44 that are attached to the traveling table 19 and hold the elevating table 28 in a slidable manner.

  The suction cup device 4 </ b> B, that is, the suction cups 4 </ b> B <b> 1, 4 </ b> B <b> 1 moves back and forth together with the traveling table 19. That is, the suction cups 4B1 and 4B1 are located at both side positions 53 and 53 of the belt conveyor device 3 with the belt conveyor device 3 interposed therebetween and above the upper surface of the belt conveyor device 3 from the feed start position L to the feed end position. A reciprocating linear motion between the two and the elevating operation at the feed start position L and the feed end position 7 are performed.

  The suction cups 4A1 and 4A1 of the lower linear conveyance device 5A and the suction cups 4B1 and 4B1 of the upper linear conveyance device 5B sandwich the belt conveyor device 3, and the upper surface line 52 of the belt conveyor device 3 is viewed from above and below on both sides 53 and 53, respectively. Reciprocating linear motion that is sandwiched and crossed with each other.

  The suction cups 4A1, 4A1 and 4B1, 4B1 both receive the glass plate 2 by vacuum suction at the feed start position L, and release the suction of the glass plate 2 at the feed end position 7.

  When the suction cups 4A1, 4A1 of the lower linear conveyance device 5A are located at the feed start position L, the suction cups 4B1, 4B1 of the upper linear conveyance device 5B are located at the feed end position 7.

  The suction cups 4A1 and 4A1 of the lower linear conveyance device 5A rise to the upper surface of the belt conveyor device 3 at the feed start position L, adsorb both sides of the glass plate 2 from the lower surface, and open the glass plate 2 at the feed end position 7. The suction cups 4B1 and 4B1 of the upper linear transport device 5B are lowered to the upper surface line 52 of the belt conveyor device 3 at the feed start position L, while the glass plate 2 is placed on the upper surface. From the upper surface of the belt conveyor device 3 and moves upward to the backward movement line 54.

  Next, the operation of both side machining measures 1 will be described.

  The suction cups 4A1 and 4A1 of the lower linear transport device 5A are raised at the feed start position L during the forward stroke, are flush with the upper surface of the belt conveyor device 3, and are supplied to the upper surface of the belt conveyor device 3 The horizontal glass plate 2 is fixed by vacuum suction from the lower surface at the inner edges 6, 6 of both side edges 10, 10, and moves forward in the forward stroke at a synchronous speed with the belt conveyor device 3. On the way, both edges 10 and 10 of the glass plate 2 pass through the grinding area G, are linearly ground by the grinding devices 30 and 30 on both sides, and are conveyed to the feed end position 7.

  At this time, the upper straight conveying device 5B is moving the empty suction cups 4B1 and 4B1 back on the return line 54 at the upper position above the upper surface of the belt conveyor device 3. Due to the difference in position, the suction cups 4A1, 4A1 and the glass plate 2 of the lower linear transport device 5A during the glass plate adsorption transport and the empty suction cups 4B1, 4B1 during the backward movement of the upper linear transport device 5B are misplaced. When the suction cups 4A1 and 4A1 of the lower linear conveying device 5A reach the feed end position L (forward movement end 9), the suction cups 4A1 and 4A1 release the suction of the glass plate 2 and descend, and descend from the upper surface line of the belt conveyor device. The backward movement line 55 in the lower position enters the backward movement in the sky. At this time, the suction cups 4B1 and 4B1 of the upper linear motion transport device 5B that has moved backward from the belt conveyor device 3 descend when reaching the feed start position L (return end 8), and the upper surface of the belt conveyor device 3 The glass plate 2 which is the same height as the line 52 and is supplied horizontally to the upper surface of the belt conveyor device 3 is vacuum-sucked from the upper surface at the inner sides 6 and 6 of both edge edges 10 and 10, and again the belt conveyor. It moves forward at a synchronous speed with the apparatus 3 and conveys the glass plate 2 together with the belt conveyor apparatus 3 by suction.

  At this time, the glass plate 2 is again adsorbed, and the suction cups 4B1, 4B1 and the glass plate 2 of the upper straight conveyance device 5B in the forward movement are misplaced with the suction cups 4A1, 4A1 of the lower linear conveyance device 5A in the backward movement. To do.

  Of course, even when the suction plate 4B1 and 4B1 of the upper linear conveying device 5B are sucked linearly by the glass plate 2, the side edges 10 and 10 of the glass plate 2 are subjected to the linear grinding process by passing through the grinding area G. The feed end position 7 (forward movement end 9) is reached. When the both-side edges 10 and 10 reach the feed end position 7, the suction cups 4B1 and 4B1 release the suction of the glass plate 2 and rise, and the return path line on the upper position above the upper surface line 52 of the belt conveyor device 3. Return 54 in the sky.

  The lower linear conveyance device 5A and the upper linear conveyance device 5B are provided facing each other across the upper surface line 52 of the belt conveyor device 3 in the upper and lower sides, and the lower linear conveyance device 5A has the suction cups 4A1, 4A1 facing upward, Further, the upper straight conveying device 5B is arranged on both sides 53 and 53 of the belt conveyor device 3 with the suction cups 4B1 and 4B1 facing downward, and the suction cups 4A1 and 4A1 and the suction cups 4B1 and 4B1 are connected to the belt conveyor device 3 respectively. In order to carry out the reciprocating linear motion of the glass plate 2 along the line, and alternately carrying the glass plate 2 by vacuum suction from the top surface and the glass plate 2 by vacuum suction from the bottom surface, Near-continuous feeding and conveying can be performed one after the other. Accordingly, grinding can be performed almost continuously, and the production capacity of grinding can be greatly increased.

  In the grinding area G, a grinding device 30 is provided at each of the both side positions 29 and 29 with the belt conveyor device 3 interposed therebetween. The grinding device 30 and the grinding device 30 face each other with the belt conveyor device 3 interposed therebetween.

  Each of the grinding devices 30 and 30 holds a grinding head 33 composed of a spindle motor having a grinding wheel 31 on a motor shaft, and an up-and-down slide device 41 that raises and lowers the grinding head 33 up and down in the feed direction of the glass plate. A slide device 34 that advances and retracts orthogonally and a drive device 35 that drives the slide device 34 are provided. The slide device 34 is fixedly supported by a machine base 37 via a bracket base 36.

  The vertical slide device 41 includes a servo motor 42 and moves the grinding head 32 up and down by the servo motor 42 to determine a required height position.

  The slide device 34 includes a slide body 38, a slide base 39, and a feed screw 45 that moves the slide body 38. A servo motor 46 is connected to the feed screw 45, and the grinding wheel 31 is adjusted to the width of the glass plate 2. In response, the position is determined by numerical control and advancing and retreating.

  The suction cups 4A1 and 4A1 of the lower linear conveyance device 5A and the suction cups 4B1 and 4B1 of the upper linear conveyance device 5B adsorb the glass plate 2 near the inner sides 6 and 6 of both side edges 10 and 10 to thereby convey the belt conveyor device 3 In synchronization with the forward travel, when passing through the grinding area G during the forward travel straight line conveyance, the both-side edges 10 and 10 of the glass plate 2 are moved by the grinding wheels 31 and 31 of the grinding devices 30 and 30 disposed on both sides. At the same time, linear grinding is performed.

  Since the glass plate 2 being conveyed in a straight line is adsorbed elongated at the inner edges 6 and 6 of both side edges 10 and 10 to be ground, the side edges 10 and 10 to be processed are hard and accurate. Therefore, accurate grinding can be performed stably.

  As shown in FIGS. 1, 2, 3, 6, and 7, a glass plate supply device 47 is provided in front 53 of the feed start position L.

  The glass plate supply device 47 includes a glass plate transfer device 48 that moves forward and backward with respect to the feed start position L, and the glass plate transfer device 48 includes a comb bar 49 that moves up and down.

  Except when the glass plate 2 is supplied to the feed start position L, as shown in FIGS. 2 and 3, the glass plate transfer device 48 raises the comb bar 49 before the feed start position L, and the comb bar 49 It waits in the state which mounted the glass plate 2 on it.

  When the glass plate 2 is supplied or put into the feed start position L, the comb bar 49 on which the glass plate 2 is placed is advanced to the feed start position L. When the feed start position L is reached, the comb bar 49 is lowered and the glass plate is lowered. 2 is placed and transferred horizontally on the upper surface of the belt conveyor device 3. The glass plate 2 supplied to the upper surface of the belt conveyor device 3 sucks the suction cups 4A1, 4A1 of the lower linear transport device 5A that has returned to the feed start position L (forward movement end 8) or the suction cups 4B1, 4B1 of the upper linear transport device 5B. And is conveyed linearly at the start of the forward stroke synchronized with the belt conveyor device 3.

  In the suction of the glass plate 2, the suction cups 4A1 and 4A1 of the lower linear transport device 5A rise to the upper surface of the belt conveyor device 3 to suck the glass plate 2 from the lower surface, and the suction cups 4B1 and 4B1 of the upper linear transport device 5B are It descends to the upper surface of the belt conveyor device 3 and adsorbs the glass plate 2 from the upper surface.

  While the glass plate 2 is vacuum-adsorbed and linearly conveyed, the both-side processing device 1 of this example for simultaneously grinding both sides of the glass plate 2 by the grinding devices 30 and 30 disposed on both sides of the passage of the glass plate 2 is as follows. The belt conveyor device 3 that supports the glass plate 2 horizontally and linearly feeds, and the belt conveyor device 3 reciprocates linearly along the belt conveyor device 3 and moves the glass plate 2 on both sides in the forward stroke. Two straight lines with suction cups 4A1, 4A1 and 4B1, 4B1 on both sides that are vacuum-sucked near the inside of the edges 10 and 10 and transported at a synchronous speed together with the belt conveyor device 3 to return the return stroke in the sky. Conveying devices 5A and 5B are provided, and the two linear conveying devices 5A and 5B are provided facing each other so as to sandwich the upper surface line 52 of the belt conveyor device 3 in the vertical direction. While the suction cups 4A1, 4A1, 4B1, and 4B1 of the respective linear conveyance devices 5A and 5B are crossed, conveyance by vacuum suction of the glass plate 2 from the top surface and conveyance by vacuum suction of the glass plate 2 from the bottom surface are alternately performed. By doing so, the glass plates 2 are linearly conveyed one after another, so that the glass plate 2 can be supplied and conveyed in a continuous manner one after another. Thus, the production capacity of the grinding process can be improved. Therefore, according to the double side machining apparatus 1 as described above, the production efficiency is good and a high quality grinding process can be obtained.

DESCRIPTION OF SYMBOLS 1 Both sides processing apparatus of glass plate 2 Glass plate 3, 53 Belt conveyor apparatus 4A, 4B Sucker apparatus
4A1, 4B1 Suction cup 5A Lower linear transport device 5B Upper linear transport device 6 Near inward 7 Feed end position 8 Return end 9 Forward end 10 Both edges 11, 19 Traverse 12, 20 Guide rail 13, 21 Drive means 14 Frame DESCRIPTION OF SYMBOLS 15 Ball screw 16 Servo motor 17, 18 Lifting device 22 Frame stand 23 Rack 24, 42, 46 Servo motor 25 Narrow belt conveyor 27 Drive device 28 Lift stand 29 Both-sides position 30 Grinding device 31 Grinding wheel 33 Grinding head 34 Slide device 35 Drive Device 36 Bracket base 37 Machine base 38 Slide body 39 Slide base 41 Vertical slide device 44 Elevating guide device 45 Feed screw 47 Glass plate supply device 48 Glass plate delivery device 49 Comb beam 50 Pinion gear 52 Upper surface line 54, 55 Return line L Feed Start position G grinding area

Claims (2)

  A double-side processing device that simultaneously grinds both sides of a glass plate with a grinding device placed on both sides of the passage of the glass plate while vacuum-adsorbing the glass plate and linearly supporting the glass plate horizontally In each of the belt conveyor device for feeding and the both sides of this belt conveyor device, reciprocate linearly along this belt conveyor device, and in the forward stroke, the glass plate is vacuum-adsorbed near the inside of both sides of the edge, And two linear conveyance devices each having a suction cup that conveys at a synchronous speed together with the belt conveyor device and returns the return stroke to the empty state. It is provided facing each other so that the upper surface line of the device is sandwiched, and the glass plate is transported by vacuum suction from the upper surface while passing through the suction cups of each linear transport device. Both sides glass-plate working apparatus which is adapted to linearly conveying the glass plate sequentially by performing the glass plate from the lower surface by alternating conveying of vacuum suction.   The both-sides processing apparatus of the glass plate of Claim 1 with which the said suction cup is elongate and is provided in parallel with the linear conveyance direction.

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