JP2010017850A - Method and device for shaping glass plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for shaping a glass plate, shaping a corner part of the glass plate as desired without error in a positional relationship between the glass plate and a grinding wheel even if the moving speed of the glass plate is changed. <P>SOLUTION: The device 1 for shaping a glass plate is equipped with: a moving means 7 for moving the glass plate 2 in X-direction parallel to one edge 6 thereof; an annular grinding wheel 4 as a grinding tool for grinding a corner part 3 on the one edge 6 side of the glass plate 2; a moving means 8 for moving the grinding wheel 4 in Y-direction orthogonal to the X-direction; an annular grinding wheel 5 as a grinding tool for grinding a corner part 3a on the other edge 11 side extending in the X-direction which is opposed to the one edge 6 of the glass plate 2; a moving means 9 for moving the grinding wheel 5 in the Y-direction; and a control means 10 for controlling the moving means 8 and 9 to move the grinding wheels 4 and 5 in the Y-direction in response to the X-axial movement of the glass plate 2, while moving the glass plate 2 in the X-direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method and an apparatus for cornering glass plates such as liquid crystal substrates and furniture mirrors.

  One of the glass sheet corner cutting devices is described in Japanese Patent Publication No. 7-14585, and the glass sheet corner cutting device described in this publication is a timer that operates by a glass plate detection signal from a glass plate detection limit switch. The polishing table is separated from each other through a glass sheet, and the polishing table is brought close to each other through a timer that is activated by a sheet glass detachment signal, so that the corner glass is cut.

  However, when setting the start of movement of the polishing table with a timer and performing corner cutting (corner cutting) on the glass plate, the conveyance speed of the glass plate changes momentarily due to changes in frictional resistance, etc. Because the time set in the timer elapses regardless of the conveyance speed of the glass plate, even if the polishing table is moved after the timer set time has elapsed, an error occurs in the positional relationship between the glass plate and the polishing table. Then, at the position (corner cutting start position) where the corner of the glass plate should be brought into contact with the grindstone, these cannot be brought into contact, and in addition, when a change occurs in the conveyance speed of the glass plate after contact, Correspondingly, since the moving speed of the polishing table does not change, it is not possible to chamfer the set shape, and in any case, it is difficult to accurately chamfer the corner of the glass plate with a desired tolerance of ± 0.2 mm. It is.

  The present invention has been made in view of the above-mentioned points, and the object of the present invention is the positional relationship between the glass plate and the grindstone even if a change occurs in the conveyance speed of the glass plate (moving speed of the glass plate). An object of the present invention is to provide a method and an apparatus for chamfering a glass plate that accurately chamfers the corner of the glass plate into a desired shape without causing an error.

  The method of chamfering a glass plate according to the present invention provides a grinding tool for grinding a corner of a glass plate in one direction in response to movement in one direction of the glass plate while moving the glass plate in one direction. Move in the other direction that intersects.

  According to the method of chamfering a glass plate of the present invention, the grinding tool is moved in one other direction in response to movement in one direction of the glass plate, so that it changes to movement in one direction of the glass plate. Even if this occurs, the corner of the glass plate can be accurately chamfered to a desired shape without causing an error in the positional relationship between the glass plate and the grinding tool.

  In the method for chamfering a glass plate of the present invention, preferably, the shape of the corner to be chamfered is set and input, the movement in one direction of the glass plate is detected, and the corner that has been set and input is detected. The grinding tool is moved in one other direction in response to movement in one direction of the detected glass plate so as to grind along the shape of the part. The shape of the corner to be chamfered on the glass plate is preferably specified by setting and inputting the distance in one direction of the corner and the other direction. Detect movement in one direction of the glass plate, move the grinding tool in the other direction in response to the detected movement in one direction of the glass plate, and set the corner of the input glass plate Since grinding is performed along the shape of the corner, the corner can be formed into an arbitrary shape.

  The method of chamfering the glass sheet of the present invention preferably uses a grinding tool other than the grinding tool based on the moving speed in one direction of the glass sheet and the distance in one direction and the other set direction. The moving speed in one direction is calculated, and the grinding tool is moved in the other direction at the calculated moving speed. The moving speed in the other direction of the grinding tool calculated from the moving speed in one direction of the glass plate is changed to the moving speed in one direction of the glass plate in order to move the grinding tool in the other direction. Even if this occurs, the corner of the glass plate can be accurately chamfered to a desired shape without causing an error in the positional relationship between the glass plate and the grinding tool.

  The method of chamfering the glass plate of the present invention preferably detects the arrival of the glass plate at a predetermined position, and after the detection of the arrival of the glass plate at the predetermined position, the moving speed in one direction of the glass plate, and setting Based on the input distance in one direction and the distance in the other direction, the movement start time for moving the grinding tool from the standby position in the other direction is calculated. Based on the movement speed in one direction of the glass plate after the glass plate arrives at a predetermined position, the movement in one direction of the glass plate is calculated to calculate the start of movement of the grinding tool in the other direction. Even if the speed changes, the start of movement of the grinding tool can be changed in response to the change. As a result, the corners of the glass plate and the grinding tool are brought into contact with each other accurately. be able to.

  In the method of chamfering the glass plate of the present invention, preferably, one direction is orthogonal to the other direction.

  The glass plate cornering device of the present invention includes a first moving means for moving the glass plate in one direction, a grinding tool for grinding the corner of the glass plate, and another grinding tool that intersects the grinding tool in one direction. A second moving means for moving in one direction, and moving the grinding tool in the other direction in response to movement in one direction of the glass plate while moving the glass plate in one direction. And control means for controlling the second moving means.

  According to the glass plate cornering device of the present invention, the grinding tool is moved in the other direction in response to the movement in the one direction of the glass plate, so that the movement in the one direction of the glass plate is changed. However, the corner of the glass plate can be accurately chamfered to a desired shape without causing an error in the positional relationship between the glass plate and the grinding tool.

  The control means of the glass plate cornering apparatus of the present invention is preferably a setting input means for setting and inputting the shape of the corner of the glass plate to be rounded, and a movement detection means for detecting movement in one direction of the glass plate. The grinding tool is made to respond to movement in one direction of the glass plate detected by the movement detecting means so as to grind along the shape of the corner set and inputted by the setting input means. Thus, the second moving means is controlled to move in the other direction. This control means detects movement in one direction of the glass plate by the movement detection means, moves the grinding tool in another direction in response to the detected movement in one direction of the glass plate, and inputs the setting. Since the grinding is performed along the shape of the corner of the glass plate set and input by the means, the corner can be formed into an arbitrary shape. Preferably, the setting input means can set and input the distance in one direction of the corner and the other direction in order to specify the shape of the corner to be chamfered of the glass plate.

  The control means of the glass plate cornering apparatus of the present invention is preferably configured such that the grinding tool is controlled based on the moving speed in one direction of the glass plate and the distance in one direction and the other direction set and input. The moving speed in the other direction is calculated, and the second moving means is controlled to move the grinding tool in the other direction at the calculated moving speed. This control means moves the grinding tool in the other direction at the moving speed calculated from the moving speed in one direction of the glass plate, so even if the moving speed in one direction of the glass plate changes. The corners of the glass plate can be accurately chamfered to a desired shape without causing an error in the positional relationship between the glass plate and the grinding tool.

  The control means of the glass plate cornering apparatus of the present invention preferably includes arrival detection means for detecting the arrival of the glass plate at a predetermined position, and after the arrival detection of the glass plate to the predetermined position by the arrival detection means. At the start of movement to move the grinding tool from its standby position to the other direction based on the moving speed in one direction of the glass plate and the distance in the one direction and the other direction set and input When the calculated movement starts, the second moving means is controlled to move the grinding tool from the standby position in the other direction. This control means calculates the start time of movement in the other direction of the grinding tool based on the moving speed in one direction of the glass plate after the glass plate arrives at a predetermined position. Even if there is a change in the movement speed in one direction, it is possible to change the start of movement of the grinding tool in response to the change, so at the position where the corner of the glass plate should contact the grinding tool. Can be contacted accurately.

  In the glass plate cornering device of the present invention, preferably, one direction is orthogonal to the other direction.

  Another glass plate cornering apparatus of the present invention includes a first moving means for moving a glass plate in one direction, a first grinding tool for grinding a corner on one edge side of the glass plate, and a first grinding A second moving means for moving the tool in another direction crossing the one direction; a second grinding tool for grinding a corner on the other edge side opposite to one edge of the glass plate; A third moving means for moving the grinding tool in one other direction, and the first and second grinding in response to the movement in one direction of the glass plate while moving the glass plate in one direction. Control means for controlling the second and third moving means so as to move the tool in the other direction.

  According to another glass plate chamfering apparatus of the present invention, in order to move the first and second grinding tools in the other direction in response to the movement in one direction of the glass plate, Even if the movement in the direction changes, the corner of the glass plate can be accurately chamfered to a desired shape without causing an error in the positional relationship between the glass plate and the first or second grinding tool.

  The control means of the other glass plate cornering device of the present invention is preferably configured input means for setting and inputting the shape of each corner of the glass plate to be cornered, and detecting movement in one direction of the glass plate. Movement detecting means, and the first and second grinding tools are moved by the movement detecting means so as to grind along the shape of each corner to be chamfered set by the setting input means. In response to the movement of the detected glass plate in one direction, the second and third moving means are controlled to move in the other direction. The control means detects movement in one direction of the glass plate by the movement detection means, and causes the first and second grinding tools to move in the other direction in response to the detected movement in one direction of the glass plate. Since it moves and grinds along the shape of each corner to be chamfered of the glass plate set and input by the setting input means, each of the corners can be formed into an arbitrary shape. Preferably, the setting input means sets the distance in one direction and the other direction of each corner of the glass plate to specify the shape of the corner of the glass plate to be chamfered. It can be input.

  The control means of the other glass plate cornering apparatus of the present invention is preferably based on the moving speed in one direction of the glass plate and the distance in one direction and the other direction set and input, respectively. In order to calculate the respective moving speeds in the other direction of the first and second grinding tools, and to move the first and second grinding tools in the other direction at the calculated moving speeds, The second and third moving means are controlled. This control means moves each of the first and second grinding tools in one other direction at each movement speed calculated from the movement speed in one direction of the glass sheet. Even if a change occurs in the moving speed, the corners of the glass plate can be accurately chamfered to a desired shape without causing an error in the positional relationship between the glass plate and the first and second grinding tools.

  The control means of the other glass plate cornering apparatus of the present invention preferably includes arrival detection means for detecting arrival of the glass plate at a predetermined position, and arrival of the glass plate at the predetermined position by the arrival detection means. After the detection, the first and second grinding tools are moved from their respective standby positions based on the moving speed in one direction of the glass plate and the distances in one direction and the other direction set and inputted respectively. In order to move the first and second grinding tools from the respective standby positions to the other one direction at the start of each movement to be moved in the other one direction, The second and third moving means are controlled. This control means is based on the moving speed in one direction of the glass plate after the glass plate arrives at a predetermined position, at the start of each movement in the other direction of the first and second grinding tools. Therefore, even if a change occurs in the moving speed in one direction of the glass plate, the movement start time of each of the first and second grinding tools can be changed in response to the change. The corners of the plate and the first and second grinding tools can be brought into precise contact at the respective positions.

  In another glass plate cornering device of the present invention, preferably, the first and second grinding tools are arranged to face each other in the other direction, and the control means includes the first and second grinding tools. The second and third moving means are controlled to synchronously grind the corners on one edge and the other edge of the glass plate by bringing the two grinding tools close to or away from each other. . This other glass plate chamfering device has a corner on one edge side and the other edge side of the glass plate in order to bring the first and second grinding tools arranged opposite to each other close to or away from each other. It can be ground synchronously.

  In another glass plate cornering device of the present invention, preferably, one direction is orthogonal to the other direction.

  According to the present invention, since the grinding tool is moved in one other direction in response to movement in one direction of the glass plate, even if a change occurs in movement in one direction of the glass plate, It is possible to provide a method and apparatus for chamfering a glass plate that accurately chamfers the corner of the glass plate into a desired shape without causing an error in the positional relationship with the grinding tool.

FIG. 1 is a plan view of a preferred example of an embodiment of the glass plate cornering apparatus of the present invention. FIG. 2 is a side view of the example shown in FIG. 3 is a view taken along the line II-II in the example shown in FIG. 4 is a cross-sectional view taken along the line III-III of the example shown in FIG. FIG. 5 is an explanatory diagram mainly showing a grinding tool and moving means in the example shown in FIG. FIG. 6 is an explanatory plan view of the example shown in FIG. FIG. 7 is a block diagram mainly showing the control means of the example shown in FIG. FIG. 8 is a diagram for explaining the operation of the example shown in FIG. FIG. 9 is an operation explanatory diagram of the example shown in FIG. FIG. 10 is a diagram for explaining the operation of the example shown in FIG. FIG. 11 is a diagram for explaining the operation of the example shown in FIG. FIG. 12 is a diagram for explaining the operation of the example shown in FIG. FIG. 13 is a diagram for explaining the operation of the example shown in FIG. FIG. 14 is a plan view of a glass plate chamfered by the glass plate chamfering apparatus shown in FIG. FIG. 15 is a plan view of another glass plate that is chamfered to a shape (orientation flat cut) other than that of the glass plate shown in FIG. 14 by the glass plate cornering device shown in FIG.

  Next, the present invention and its embodiments will be described based on preferred examples shown in the drawings. The present invention is not limited to these examples.

  1 to 13, the glass plate cornering device 1 of this example includes a moving means 7 that moves a rectangular glass plate 2 in the X direction parallel to one edge 6 thereof, and the glass plate 2 extends in the X direction. Further, an annular grindstone 4 as a grinding tool for grinding the corner 3 on the one edge 6 side, a moving means 8 for moving the grindstone 4 in the Y direction orthogonal to the X direction, and the one edge 6 of the glass plate 2 are opposed to each other. An annular grindstone 5 as a grinding tool for grinding the corner 3a on the other edge 11 side extending in the X direction, a moving means 9 for moving the grindstone 5 in the Y direction, and a glass plate 2 in the X direction. However, in response to the movement of the glass plate 2 in the X direction, a control means 10 for controlling the moving means 8 and 9 is provided so as to move the grindstones 4 and 5 in the Y direction.

  The grindstones 4 and 5 are opposed to each other in the Y direction, the grindstone 4 is arranged outside the one edge 6 of the glass plate 2, and the grindstone 5 is located outside the other one edge 11 of the glass plate 2. It is arranged. The grindstones 4 and 5 are adapted to grind the corners 3 and 3a on the one edge 6 side and the other edge 11 side synchronously in proximity to or away from each other.

  The glass plate cornering device 1 further includes an electric motor 12 that rotates the grindstone 4 and an electric motor 13 that rotates the grindstone 5. The grindstones 4 and 5 are arranged in the X direction of the electric motors 12 and 13. The grindstones 4 and 5 are respectively attached to one end of an output rotation shaft extending in the Z direction perpendicular to the Y direction, and the electric motors 12 and 13 are operated.

  The moving means 7 includes endless belts 15 and 16 that sandwich the inside of one edge 6 of the glass plate 2, endless belts 17 and 18 that sandwich the inside of the other edge 11 of the glass plate 2, and endless belts 15 and 16. In addition, a traveling means 20 that travels the endless belts 17 and 18 in the X direction in synchronization with each other is provided, and is conveyed straight in the X direction while sandwiching the glass plate 2. The endless belts 15 and 17 on the lower surface 21 side of the glass plate 2 are longer than the endless belts 16 and 18 on the upper surface 22 side of the glass plate 2 and extend in the X direction. On the 23rd side, a glass plate can be easily placed on the endless belts 15 and 17.

  The traveling means 20 extends in the Z direction and is connected to an electric motor 27 attached to one frame 26 of the pair of frames 26 and 26a on the carry-out 24 side attached to the base 25, and an output rotation shaft of the electric motor 27. The drive shaft 29 is rotatably supported by the frame 26 and the other frame 26a via bearings 28, pulleys 30 and 31 fixed to the drive shaft 29, and the bearings 32 are respectively attached to the frames 26 and 26a. A rotating shaft 33 supported rotatably, pulleys 34 and 35 attached to the rotating shaft 33, a gear 36 fixed to the driving shaft 29 adjacent to the pulley 30, and a driving shaft 29 adjacent to the pulley 31. A gear 37 fixed to the gear 36, a gear 38 attached to the rotary shaft 33 adjacent to the pulley 34 meshed with the gear 36, and a gear 37. A gear 39 attached to the rotary shaft 33 adjacent to the pulley 35 and the frame 26 and one frame 40 of the pair of frames 40 and 40a on the carry-in 23 side attached to the base 25 extending in the Z direction. The support plates 41 and 42 attached to extend in the direction, the support plates 43 and 44 attached to the frame 26a and the other frame 40a in the X direction, and the support plates 41, 42, 43 and 44 to the loading 23 side Pulleys 45, 46, 47, and 48 that are rotatably supported by the endless belt 15 around the pulley 30 and the pulley 45, and the pulley 31 and the pulley 46. The endless belt 17 is hung, the endless belt 16 is hung on the pulley 34 and the pulley 47, and the pulley 35 and the pulley In the 48, the endless belt 18 is wound around.

  The upper edge of the support plate 41 is slidably in contact with the back surface of the endless belt 15, and the upper edge of the support plate 41 prevents the endless belt 15 from hanging down. The lower edge of the support plate 42 is slidably brought into contact with the back surface of the endless belt 16. The lower edge of the support plate 42 prevents the endless belt 16 from being lifted. The upper edge of the support plate 43 is slidably in contact with the back surface of the endless belt 17, and the upper edge of the support plate 43 prevents the endless belt 17 from drooping. The support plate 44 is configured so that the lower surface of the support plate 44 is slidably in contact with the lower surface of the endless belt 18, and the lower end of the support plate 44 prevents the endless belt 18 from being lifted.

  The traveling means 20 rotates the drive shaft 29 by the rotation of the output rotation shaft by the operation of the electric motor 27, rotates the pulleys 30 and 31 and the gears 36 and 37 by this rotation, and rotates the gears 36 and 37. The gears 38 and 39 meshed with these are rotated, the pulleys 34 and 35 are rotated by this rotation, and the pulleys 30, 31, 34 and 35 are rotated, and the endless belt 15 wound around the pulley 30 and the pulley 45 is rotated. The endless belt 17 that is wound around the pulley 31 and the pulley 46, the endless belt 16 that is wound around the pulley 34 and the pulley 47, and the endless belt 18 that is wound around the pulley 35 and the pulley 48 are carried in synchronously. The vehicle travels in the X direction from the 23 side toward the carry-out 24 side. Thus, the glass plate 2 placed on the endless belts 15 and 17 moves in the X direction while being sandwiched between the endless belts 15 and 16 and 17 and 18.

  The moving means 8 includes an electric motor 60 attached to the frame 26 via a bracket 61 and a screw shaft extending in the Y direction and connected to one end of an output rotation shaft of the electric motor 60 and rotatably supported by the bracket 61. 62, a nut (not shown) screwed to the screw shaft 62, a movable base 63 to which the nut is fixed, a pair of rails 64 attached to the bracket 61 and extending in the Y direction, and the rail 64. And a slider (not shown) fixed to the movable table 63, and the movable table 63 fixes the electric motor 12. The bracket 61 is provided with an origin position detection limit switch 65. The limit switch 65 contacts the movable table 63 when the grindstones 4 and 5 are separated from each other, and the origin position of the grindstone 4 in the Y direction. Is detected. When the electric motor 60 is actuated, the moving means 8 rotates the output rotation shaft to rotate the screw shaft 62, and the rotation of the screw shaft 62 moves the movable base 63 to which the nut is fixed in the Y direction. The grindstone 4 is moved in the Y direction via the electric motor 60 fixed to the head.

  The moving means 9 includes an electric motor 70 attached to the frame 26 a via a bracket 71, and a screw shaft extending in the Y direction that is connected to one end of an output rotation shaft of the electric motor 70 and is rotatably supported by the bracket 71. 72, a nut (not shown) screwed to the screw shaft 72, a movable base 73 to which the nut is fixed, a pair of rails 74 attached to the bracket 71 and extending in the Y direction, and the rail 74 are fitted. And a slider (not shown) fixed to the movable table 73, and the movable table 73 fixes the electric motor 13. The bracket 71 is provided with an origin position detection limit switch 75. The limit switch 75 comes into contact with the movable base 73 when the grindstones 4 and 5 are separated from each other, and the origin position of the grindstone 5 in the Y direction. Is detected. When the electric motor 70 is actuated, the moving means 9 rotates the output rotation shaft to rotate the screw shaft 72, and the rotation of the screw shaft 72 moves the movable base 73 to which the nut is fixed in the Y direction. The grindstone 5 is moved in the Y direction via the electric motor 13 fixed to the head.

  The control means 10 includes a setting input means 80 for setting and inputting the shapes of the corners 3 and 3a to be chamfered on the glass plate 2, a movement detecting means 81 for detecting the movement of the glass plate 2 in the X direction, and a glass An arrival detection means 83 for detecting the arrival of the plate at a predetermined position 82 and an electric motor 60 are attached. An encoder 60a for detecting the rotation of the output rotation shaft of the electric motor 60 and an electric motor 70 are attached. An encoder 70a that detects the rotation of the output rotation shaft of the electric motor 70, a servo driver 27b that controls the rotation of the output rotation shaft of the electric motor 27, and a servo driver 60b that controls the rotation of the output rotation shaft of the electric motor 60. The servo driver 70b for controlling the rotation of the output rotating shaft of the electric motor 70, the endless belt 15 and the detection signal from the movement detecting means 81; 7 on the basis of the calculated moving speed V1, the set value from the setting input means 80, and the arrival detection signal from the arrival detecting means 83. The calculation device 90 for calculating the moving speed V2 of the grindstones 4 and 5 in the Y direction and the start of movement of the grindstones 4 and 5, and the servo driver 27b to run the endless belts 15, 16, 17 and 18 at a constant speed. And a control device 84 that controls the servo drivers 60b and 70b based on the calculation result from the calculation device 90. The servo drivers 27b, 60b, and 70b are based on the command signal from the control device 84 and the rotation detection signals (feedback signals) from the encoders 60a and 70a and the encoder 27a described later, respectively. The electric motors 27, 60 and 70 are operated so that the predetermined rotation is maintained.

  The setting input unit 80 includes a display input device (touch panel) 85, and sets these setting values in order to specify the shapes of the corners 3 and 3a to be chamfered by operating the display input device (touch panel) 85. In this example, the distance A1 in the X direction and the distance B1 in the Y direction of the corner 3 to be rounded on the front edge 87 side that extends in the Y direction on the carry-out 24 side of the glass plate 2 and The distance A2 in the X direction and the distance B2 in the Y direction of the corner 3a to be chamfered on the front edge 87 side, and the corner to be chamfered on the rear edge 88 side extending in the Y direction on the carry-in 23 side of the glass plate 2 The distance A3 in the X direction of the part 3 and the distance B3 in the Y direction, and the distance A4 in the X direction and the distance B4 in the Y direction of the corner 3a to be chamfered on the rear edge 88 side can be set and inputted. .

  The movement detection means 81 is attached to the electric motor 27 and includes an encoder 27 a that detects the rotation of the output rotation shaft of the electric motor 27 and detects the movement of the glass plate 2.

  As the movement detecting means 81, instead of the above, there is provided a roller that directly contacts the glass plate 2 and moves while the glass plate 2 moves in the X direction, and detects the rotation of the glass plate. An encoder that detects two movements may be used.

  The arrival detection means 83 is attached to the support plate 44 and includes a glass plate detector 86 positioned on the carry-in 23 side with respect to the positions of the grindstones 4 and 5, and the glass plate detector 86 is made of glass. The front edge 87 of the plate 2 and the rear edge 88 of the glass plate 2 are detected to arrive at a predetermined position 82.

  The arithmetic unit 90 moves the grindstone 4 in the Y direction from the standby position D1 of the grindstone 4 when the corner 3 on the front edge 87 side of the glass plate 2 is chamfered, and the corner 3 on the front edge 87 side is cornered. When moving, the moving speed V2 of the grindstone 4 in the Y direction is calculated based on the moving speed V1 in the X direction of the glass plate 2, the distance A1 in the set X direction, and the distance B1 in the Y direction ( After the expression V2 = (B1 / A1) V1) and the arrival detection of the front edge 87 of the glass plate 2 to the predetermined position 82 by the glass plate detector 86, the grindstone 4 is moved to the standby position at the moving speed V2. The moving time for moving in the Y direction from D1 to the position C1 where the corner 3 on the front edge 87 side of the glass plate 2 and the grindstone 4 should come into contact is calculated. With this moving time, the glass plate 2 can move to the position C1. Calculate the position Q1 and calculate when the grindstone 4 starts to move That. That is, the time when the glass plate 2 reaches the calculated position Q1 is the time when the grindstone 4 starts to move from the standby position D1.

  The arithmetic unit 90 moves the grindstone 5 in the Y direction from the standby position D2 of the grindstone 5 when the corner 3a on the front edge 87 side of the glass plate 2 is chamfered, so that the corner 3a on the front edge 87 side becomes the corner. When moving, the moving speed V2 in the Y direction of the grindstone 5 is calculated based on the moving speed V1 in the X direction of the glass plate 2, the distance A2 in the X direction and the distance B2 in the Y direction ( After the expression V2 = (B2 / A2) V1) and the arrival detection of the front edge 87 of the glass plate 2 to the predetermined position 82 by the glass plate detector 86, the grindstone 5 is moved to the standby position at the moving speed V2. The moving time for moving in the Y direction from D2 to the position C2 where the corner 3a on the front edge 87 side of the glass plate 2 and the grindstone 5 should come into contact is calculated. With this moving time, the glass plate 2 can move to the position C2. When the position Q2 is calculated and the grindstone 5 starts to move Calculated to. That is, the time when the glass plate 2 arrives at the calculated position Q2 is the time when the grindstone 5 starts to move from the standby position D2.

  The arithmetic unit 90 moves the grindstone 4 in the Y direction from the standby position D3 of the grindstone 4 when the corner 3 on the rear edge 88 side of the glass plate 2 is chamfered, and the corner 3 on the rear edge 88 side is cornered. When moving, the moving speed V2 of the grindstone 4 in the Y direction is calculated based on the moving speed V1 in the X direction of the glass plate 2, the distance A3 in the X direction set and inputted, and the distance B3 in the Y direction ( The calculation formula V2 = (B3 / A3) V1), and after the arrival detection of the rear edge 88 of the glass plate 2 to the predetermined position 82 by the glass plate detector 86, the grindstone 4 is in the standby position at the moving speed V2. The moving time for moving in the Y direction from D3 to the position C3 where the corner 3 on the rear edge 88 side of the glass plate 2 and the grindstone 4 should come into contact is calculated. With this moving time, the glass plate 2 can move to the position C3. Calculate the position Q3 and calculate when the grindstone 4 starts to move That. That is, when the glass plate 2 reaches the calculated position Q3, the movement of the grindstone 4 from the standby position D3 is started.

  The arithmetic unit 90 moves the grindstone 5 in the Y direction from the standby position D4 of the grindstone 5 when chamfering the corner 3a on the rear edge 88 side of the glass plate 2 to grind the corner 3a on the rear edge 88 side. In this case, the moving speed V2 of the grindstone 5 in the Y direction is calculated based on the moving speed V1 in the X direction of the glass plate 2, the distance A4 in the X direction and the distance B4 in the Y direction. Formula V2 = (B / A) V1), and after the arrival detection of the rear edge 88 of the glass plate 2 to the predetermined position 82 by the glass plate detector 86, the grindstone 5 is at the moving speed V2 and at the standby position D4. To calculate a moving time in which the corner 3a on the rear edge 88 side of the glass plate 2 and the grindstone 5 should contact with each other in the Y direction, and the glass plate 2 can move to the position C4 with this moving time. Q4 is calculated to calculate when the grindstone 5 starts to move That. That is, when the glass plate 2 reaches the calculated position Q4, the movement of the grindstone 5 from the standby position D4 is started.

  Since the calculation device 90 is configured to always calculate the movement start time of each of the grindstones 4 and 5 after detection of the arrival of the front edge 87 and the rear edge 88 of the glass plate 2, the movement speed V1 of the glass plate 2 is calculated. Along with the change, the calculated movement speed V2 of each of the grindstones 4 and 5 also changes, and thereby changes at the start of movement of each of the grindstones 4 and 5.

  The control device 84 instructs the servo drivers 60b and 70b so that the grindstones 4 and 5 start moving at the calculated moving speeds V2 when the movements calculated by the calculating device 90 are started.

  The control device 84 and the computing device 90 calculate the moving speed V1 of the glass plate 2 in the X direction and the moving speed V2 of the grindstones 4 and 5 in the Y direction, to the microcomputer 84a. In addition, it may be embodied with a program stored in advance so as to calculate the movement start time of each of the grindstones 4 and 5 and to control the operation of the servo drivers 27b, 60b and 70b.

  By using the glass plate cornering device 1 of this example, the corners 3 and 3a on the front edge 87 side of the glass plate 2 are cornered, and then the corners 3 and 3a on the rear edge 88 side of the glass plate 2 are cornered. When taking the image, first, the display input device 85 of the setting input unit 80 is operated, the distance A1 in the X direction and the distance B1 in the X direction of the corner 3 to be chamfered on the front edge 87 side, and the front edge 87. The distance A2 in the X direction and the distance B2 in the Y direction of the corner 3a to be chamfered on the side, the distance A3 in the X direction and the distance B3 in the Y direction of the corner 3 to be chamfered on the rear edge 88 side, and the rear A distance A4 in the X direction and a distance B4 in the Y direction of the corner 3a to be rounded on the edge 88 side are set and input. Next, the glass plate 2 is placed on the endless belts 15 and 17 on the carry-in 23 side, and the inner edge 6 and the inner edge 11 of the glass plate 2 are sandwiched between the endless belts 15 and 16 and 17 and 18. On the other hand, the traveling means 20 moves in the X direction from the carry-in 23 side to the carry-out 24 side, that is, conveys straight. While the endless belts 15 and 16 and 17 and 18 are traveling, the electric motor 27 is feedback-controlled by the servo driver 27b so that the rotation of its output rotation shaft is maintained at a predetermined rotation based on the detection signal from the encoder 27a. The computing device 90 calculates the moving speed V1 in the X direction of the glass plate 2 placed on the endless belts 15 and 17 from the detection signal from the encoder 27a. Next, when the front edge 87 of the glass plate 2 being conveyed in a straight line arrives at the predetermined position 82, the glass plate detector 86 detects the arrival of the front edge 87 at the predetermined position 82. After the arrival of the predetermined position 82 of the front edge 87, the calculation device 90 uses the movement speed V1 in the X direction of the glass plate 2, the distance A1 in the set X direction, and the distance B1 in the Y direction. Then, the moving speed V2 in the Y direction of the grindstone 4 is calculated, and the moving time for the grindstone 4 to move in the Y direction from the standby position D1 to the position C1 at the moving speed V2 is calculated. With this moving time, the glass plate 2 Is calculated based on the moving speed V1 in the X direction of the glass plate 2, the distance A2 in the X direction, and the distance B2 in the Y direction. The movement speed V2 in the Y direction is calculated, and the movement time for the grindstone 5 to move in the Y direction from the standby position D2 to the position C2 at the movement speed V2 is calculated. Lath 2 to calculate the position Q2 can move to the position C2. Next, when the glass plate 2 reaches the position Q1, the grindstone 4 is moved in the Y direction from the standby position D1 toward the outside of the glass plate 2, and the corner 3 on the front edge 87 side of the glass plate 2 is moved. And the grindstone 4 are brought into contact with each other at the position C1, and while the glass plate 2 moves the distance A1, the grindstone 4 is moved in the Y direction at the moving speed V2 and the corner on the front edge 87 side of the glass plate 2 is moved. When the portion 3 is ground and the glass plate 2 reaches the position Q2, the grindstone 5 is moved from the standby position D2 toward the outside of the glass plate 2 (in a direction opposite to the moving direction of the grindstone 4). The wheel 3 is moved in the Y direction, the corner 3a on the front edge 87 side of the glass plate 2 is brought into contact with the grindstone 5 at the position C2, and the grindstone 5 is moved at the moving speed V2 while the glass plate 2 moves the distance A2. The corner 3a on the front edge 87 side of the glass plate 2 is ground by moving B2 in the Y direction. After the corners 3 and 3a on the front edge 87 side of the glass plate 2 are chamfered and ground, the grindstones 4 and 5 are moved in the Y direction by contacting the movable platform 63 and the movable platform 73 with the limit switches 65 and 75. It stops, and it waits in each waiting position D3 and D4 of each outside which grindstones 4 and 5 were mutually separated. Next, when the rear edge 88 of the glass plate 2 being conveyed in a straight line arrives at the predetermined position 82, the glass plate detector 86 detects the arrival of the rear edge 88 at the predetermined position 82. After the arrival of the predetermined position 82 of the trailing edge 88, the calculation device 90 uses the movement speed V1 of the glass plate 2 in the X direction, the set input distance A3 in the X direction, and the distance B3 in the Y direction. Then, the moving speed V2 in the Y direction of the grindstone 4 is calculated, and the moving time for the grindstone 4 to move in the Y direction from the standby position D3 to the position C3 at the moving speed V2 is calculated. With this moving time, the glass plate 2 Is calculated based on the movement speed V1 in the X direction of the glass plate 2, the distance A4 in the X direction and the distance B4 in the Y direction that are set and input. The movement speed V2 in the Y direction is calculated, and the movement time for the grindstone 5 to move in the Y direction from the standby position D4 to the position C4 at the movement speed V2 is calculated. Lath 2 to calculate the position Q4 can move to the position C4. Next, when the glass plate 2 reaches the position Q3, the grindstone 4 is moved in the Y direction from the standby position D3 toward the inside of the glass plate 2, and the corner 3 on the rear edge 88 side of the glass plate 2 is moved. And the grindstone 4 are brought into contact with each other at the position C3, and while the glass plate 2 moves the distance A3, the grindstone 4 is moved in the Y direction by the moving speed V2 and the corner on the rear edge 88 side of the glass plate 2 is moved. When the portion 3 is ground and the glass plate 2 reaches the position Q4, the grindstone 5 is moved from the standby position D4 toward the inside of the glass plate 2 (in a direction opposite to the moving direction of the grindstone 4). The wheel 3 is moved in the Y direction, the corner 3a on the rear edge 88 side of the glass plate 2 and the grindstone 5 are brought into contact at the position C4, and the grindstone 5 is moved at the moving speed V2 while the glass plate 2 moves the distance A4. The corner 3a on the rear edge 88 side of the glass plate 2 is ground by moving B4 in the Y direction. After the corners 3 and 3a on the rear edge 88 side of the glass plate 2 are chamfered and ground, the Y of the grindstones 4 and 5 is brought into contact with the limit switches (not shown) of the movable table 63 and the movable table 73. The movement in the direction is stopped, and the grindstones 4 and 5 are made to stand by at the respective standby positions D1 and D2 that are close to each other. Thus, the corners 3 and 3a of the glass plate 2 that has been rounded are rounded into a shape as shown in FIG. The grindstones 4 and 5 are rotated by the operation of the electric motors 12 and 13 until they come into contact with the glass plate 2, and the arithmetic unit 90 arrives at the front edge 87 and the rear edge 88 of the glass plate 2. Since the movement start time of each of the grindstones 4 and 5 is constantly calculated after the detection, as the movement speed V1 of the glass plate 2 changes, the calculated movement speed V2 of each of the grindstones 4 and 5 and It also changes at the start of each movement. As the movement speed V1 of the glass plate 2 changes during grinding of the respective corners 3 and 3a, the movement speed V2 of each of the grindstones 4 and 5 also changes.

  The glass plate chamfering apparatus 1 of this example does not calculate the positions Q1, Q2, Q3, and Q4 by the arithmetic unit 90, and the grindstones 4 and 5 are moved to the respective standby positions D1, D2, You may make it start the movement of the grindstones 4 and 5 based on the movement time required for the movement in the Y direction from D3 and D4 to each position C1, C2, C3, and C4.

DESCRIPTION OF SYMBOLS 1 Glass plate chamfering apparatus 2 Glass plate 3, 3a Corner part 4, 5 Grinding stone 6, 11 One edge 7, 8, 9 Moving means 10 Control means

Claims (18)

  While moving the glass plate in one direction, in response to the movement in one direction of the glass plate, move the grinding tool that grinds the corner of the glass plate in the other direction crossing the one direction. A method of chamfering a glass plate.   Set and input the shape of the corner of the glass plate to be chamfered, detect movement in one direction of the glass plate, and grind along the shape of the corner of the set input, The method for chamfering a glass plate according to claim 1, wherein the glass plate is moved in one direction in response to the movement in one direction of the detected glass plate.   The method for chamfering a glass plate according to claim 2, wherein the shape of the corner to be chamfered of the glass plate is specified by setting and inputting a distance in one direction of the corner and the other direction.   Based on the moving speed in one direction of the glass plate and the distance in one direction and the other direction set and input, the moving speed in the other direction of the grinding tool is calculated, and the calculated movement 4. A method for chamfering a glass sheet according to claim 3, wherein the grinding tool is moved in another direction at a speed.   After detecting the arrival of the glass plate at a predetermined position, and after detecting the arrival of the glass plate at the predetermined position, the moving speed in one direction of the glass plate, and the distance in one direction and the other set direction inputted 5. A method for chamfering a glass sheet according to claim 3 or 4, wherein a time of starting movement is calculated for moving the grinding tool from the standby position in another direction based on the method.   The method for chamfering a glass plate according to any one of claims 1 to 5, wherein one direction and the other direction are orthogonal to each other.   A first moving means for moving the glass plate in one direction, a grinding tool for grinding a corner of the glass plate, and a second movement for moving the grinding tool in another direction crossing the one direction And a control for controlling the second moving means to move the grinding tool in one other direction in response to movement in one direction of the glass sheet while moving the glass sheet in one direction. And a glass plate cornering device.   The control means includes setting input means for setting and inputting the shape of the corner of the glass plate to be chamfered, and movement detection means for detecting movement in one direction of the glass plate, and is set by the setting input means. In order to move the grinding tool in the other direction in response to the movement in one direction of the glass plate detected by the movement detecting means so as to grind along the shape of the input corner. The glass plate cornering device according to claim 7, wherein the second moving means is controlled.   The setting input means can set and input the distance in one direction of the corner and the other direction in order to specify the shape of the corner to be chamfered of the glass plate. Glass plate cornering device.   The control means calculates the moving speed in the other direction of the grinding tool based on the moving speed in one direction of the glass plate and the distance in one direction and the other direction set and input, The glass plate cornering device according to claim 9, wherein the second moving means is controlled so as to move the grinding tool in another direction at the calculated moving speed.   The control means includes arrival detection means for detecting arrival of the glass plate at a predetermined position, and after the arrival detection of the glass plate to the predetermined position by the arrival detection means, the moving speed in one direction of the glass plate, Based on the input direction in one direction and the distance in the other direction, calculate the movement start time to move the grinding tool from the standby position to the other direction, and grind at the calculated movement start time. The glass plate cornering device according to claim 9 or 10, wherein the second moving means is controlled to move the tool from the standby position in another direction.   A first moving means for moving the glass plate in one direction, a first grinding tool for grinding a corner on one edge of the glass plate, and another one that intersects the first grinding tool in one direction. A second moving means for moving in the direction, a second grinding tool for grinding a corner on the other edge facing one edge of the glass plate, and a second grinding tool for moving in the other direction. In response to the movement in one direction of the glass plate while moving the glass plate in one direction with the third moving means, the first and second grinding tools are moved in the other direction. And a glass plate cornering device comprising control means for controlling the second and third moving means.   The control means includes setting input means for setting and inputting the shape of each corner of the glass plate to be chamfered, and movement detection means for detecting movement in one direction of the glass plate, and the setting input means. The first and second grinding tools are made to respond to the movement in one direction of the glass plate detected by the movement detecting means so as to grind along the shape of each corner to be chamfered set by The glass plate cornering device according to claim 12, wherein the second and third moving means are controlled to move in the other direction.   The setting input means can set and input the distance in one direction of each corner of the glass plate and the other direction in order to specify the shape of the corner of the glass plate to be chamfered. The glass plate chamfering device according to claim 13.   The control means determines the other direction of the first and second grinding tools based on the moving speed in one direction of the glass sheet and the distance in one direction and the other direction set and input respectively. The second and third moving means are controlled in order to move the first and second grinding tools in the other direction at the calculated moving speeds. The glass plate chamfering device according to claim 14.   The control means includes arrival detection means for detecting arrival of the glass plate at a predetermined position, and after the arrival detection of the glass plate to the predetermined position by the arrival detection means, the moving speed in one direction of the glass plate, Each movement start time for moving the first and second grinding tools from the respective standby positions to the other one direction based on the respective set input directions and the distance in the other one direction. When the calculated movement starts, the second and third moving means are controlled to move the first and second grinding tools from the respective standby positions in the other direction. The glass plate cornering device according to claim 14 or 15.   The first and second grinding tools are arranged opposite to each other in one other direction, and the control means moves the first and second grinding tools close to or away from each other to thereby The glass plate cornering according to any one of claims 12 to 16, wherein the second and third moving means are controlled so as to synchronously grind the corners on the edge side and the other edge side. apparatus.   The glass plate cornering device according to any one of claims 7 to 17, wherein one direction and the other direction are orthogonal to each other.

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