JP5935698B2 - Glass plate cutting method and glass plate cutting device - Google Patents

Description

  The present invention relates to a glass plate cutting method and a glass plate cutting apparatus.

  Patent Document 1 discloses a cutting device that cuts a glass plate whose cut line has been processed by a cutter along the cut line.

  The cutting device of Patent Document 1 includes a first clamping member including a pressing portion and a receiving portion on the upstream side in the conveyance direction of the glass plate, and includes a pressing portion and a receiving portion on the downstream side in the conveyance direction of the glass plate. A second clamping member is provided. In the cutting method using this cutting device, first, the glass surface on the upstream side with respect to the cutting line is clamped by the first clamping member, and the glass surface on the downstream side with respect to the cutting line is clamped by the second clamping member. . Next, the second holding member on the downstream side is rotated around an axis installed at a position below the cutting line. By this operation, the glass plates are cut along the cutting line, and the cut surfaces of the cut glass plates are separated from each other.

Japanese Patent Publication No. 6-74153

  However, the glass plate cutting device of Patent Document 1 rotates in a state where the entire pressing portion and the receiving portion of the second clamping member are pressed against the glass surface, so that an unreasonable force acts on the cutting line. There was a problem to do. Because of this problem, cracks occur in the cut line from a plurality of locations, so that cracks occur at the locations where the cracks collide with each other (a relatively large shell-shaped chipping of chipping), and a good cut surface cannot be obtained. There was a problem.

  This invention is made | formed in view of such a situation, and it aims at providing the cutting method of a glass plate and the cutting device of a glass plate which can obtain a favorable cut surface.

In order to achieve the above object, the present invention provides a glass plate cutting method for cutting a cut glass sheet along the cut line, the width of one glass plate facing each other across the cut line of the glass plate The lower surface and the upper surface in the direction are held by a pair of holding members, and the lower surface in the width direction of the other glass plate facing each other across the cutting line of the glass plate is supported by the support member, and the folding member has a predetermined gap with respect to the upper surface A cutting member made of the support member and the folding member by pressing and abutting the edge portion farthest from the cut line to the upper surface of the other glass plate among the lower edge portions of the folding member, by rotating the rotation center position below the glass plate of the cut line by the rotation driving unit, wherein the folding member, in accordance with the rotation of the folding member said From the lower surface edge portion farthest from the line, toward the nearest lower surface edge portion on the cut line, it is pressed against the upper surface of the glass plate while gradually increasing the area in contact with the glass plate, the glass plate Provided is a method for cutting a glass plate that is folded along the cutting line and that separates the cut surfaces of the cut glass plate.

Further, in order to achieve the above object, the present invention provides a glass plate cutting device for cutting a cut glass sheet along the cut line, wherein one of the glass plates facing each other across the cut line of the glass plate. A pair of holding members that hold the lower surface and the upper surface in the width direction, a support member that supports the lower surface in the width direction of the other glass plate facing each other across the cut line of the glass plate, and a predetermined gap with respect to the upper surface A cutting member having a folding member, a rotation driving unit that rotates the cutting member around a position below the glass plate of the cutting line, and a bottom edge part of the folding member that is farthest from the cutting line . An edge portion is pressed and brought into contact with the upper surface of the other glass plate, and the cutting member is rotated by the rotation drive unit at a position lower than the glass plate of the cutting line. And gradually increasing the area in contact with the glass plate from the lower surface edge portion farthest away from the cut line to the lower surface edge portion closest to the cut line as the folding member rotates. And a CPU for controlling the glass plate so as to press and contact the upper surface of the glass plate.

  According to the present invention, since the gap is provided between the folding member and the glass plate, when the folding member rotates during the cutting of the glass plate, the folding member has an edge portion that is farthest from the cut line at the glass portion. Abuts the plate first. As the folding member rotates, the folding member is pressed against the glass plate while gradually increasing the area in contact with the glass plate from the edge portion toward the edge portion closest to the cut line. The glass plate is cut along the cutting line by the operation of this folding member, but at the time of cutting, the cutting line is not subjected to excessive force from the folding member, so that the cut surface of the glass plate is not cracked, and thus the cutting is performed. The surface is good.

  Moreover, according to this invention, since the cut surfaces of a glass plate are pulled apart at the time of the cutting | disconnection of a glass plate, the contact of cut surfaces can be prevented and a favorable cut surface is obtained.

  Further, since there is a gap between the cut glass plate and the folded member, the cut glass plate passes through the support member and the folded member by its own weight and falls.

  In order to achieve the above object, the present invention provides a glass plate cutting method for cutting a cut glass sheet along the cut line, the width of one glass plate facing each other across the cut line of the glass plate The lower surface and the upper surface in the direction are held by a pair of holding members, and the lower surface in the width direction of the other glass plate facing each other across the cutting line of the glass plate is supported by the support member, and the folding member has a predetermined gap with respect to the upper surface The glass plate is generated in the tangent line by arranging the folding member as a long member in parallel with the tangent line and inclining the lower surface of the foldable member with respect to the upper surface of the other glass plate. And the folding member is moved downward toward the glass plate, and the glass plate is moved from one end portion in the tangential direction by the folding member. The glass plate is folded along the cutting line by gradually pressing toward the part, and the cutting member made of the support member and the folding member is rotated around the lower position of the cutting line by the rotation drive unit. By rotating as follows, the cutting method of the glass plate which separates the cut surfaces of the cut | disconnected glass plate is provided.

  Further, in order to achieve the above object, the present invention provides a glass plate cutting device for cutting a cut glass sheet along the cut line, wherein one of the glass plates facing each other across the cut line of the glass plate. A pair of holding members that hold the lower surface and the upper surface in the width direction, a support member that supports the lower surface in the width direction of the other glass plate facing each other across the cut line of the glass plate, and a predetermined gap with respect to the upper surface A cutting member having a folding member, a vertical movement drive unit that moves the folding member up and down with respect to the upper surface of the other glass plate, and a rotation drive unit that rotates the cutting member around a position below the cutting line. And the folding member is disposed as a long member in parallel with the cut line, and the glass plate is cut so that the lower surface of the folding member is inclined with respect to the upper surface of the other glass plate. To provide a location.

  According to the present invention, when the folding member is moved downward toward the glass plate, the glass plate is gradually pressed from the one end portion of the glass plate to the other end portion by the folding member, and the contact between the folding member and the glass plate is achieved. The area to be gradually increased. Along with this, the cut line is cracked from one end to the other end. For this reason, since a plurality of cracks do not occur at the same time in the cut line, it is possible to reliably prevent cracking.

  Further, according to the present invention, the support member is lowered by the downward movement of the folding member by the vertical movement drive unit and the rotation operation by the rotation drive unit. Along with this, a gap is formed between the cut glass plate and the support member, so that the cut glass plate passes between the support member and the folding member by its own weight and falls.

  According to the present invention, since the glass plate can be gradually pressed from one end portion to the other end portion by the folding member, the cut line is cracked from the one end portion toward the other end portion. For this reason, since a plurality of cracks do not occur at the same time in the cut line, it is possible to reliably prevent cracking.

  According to the method for cutting a glass plate and the apparatus for cutting a glass plate of the present invention, the cut surface of the glass plate is not cracked, so that a good cut surface can be obtained.

FIG. 1 is a main part configuration diagram of a glass sheet cutting device according to a first embodiment. FIG. 2 is an operation explanatory diagram of the cutting apparatus shown in FIG. FIG. 3 is an explanatory view showing another form of the support member and the folding member. FIG. 4 is an operation explanatory diagram of the cutting device shown in FIG. FIG. 5 is an operation explanatory diagram of the cutting apparatus shown in FIG. FIG. 6 is an operation explanatory diagram of the cutting apparatus shown in FIG. FIG. 7 is a side view of an essential part of the glass sheet cutting device according to the second embodiment. 8 (a) to 8 (c) are operation explanatory views of the cutting device shown in FIG. FIGS. 9A to 9C are operation explanatory views of the glass sheet cutting device according to the third embodiment. FIG. 10 is a plan view of the cutting device shown in FIG. 11 is an arrow view of the cutting device shown in FIG. 10 as viewed from the arrow AA line. FIG. 12 is an overall perspective view showing an example of a cutting device. FIG. 13 is an overall perspective view showing an example of a cutting device.

  Hereinafter, preferred embodiments of a glass plate cutting method and a glass plate cutting device according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a side view of an essential part of a glass sheet cutting device 10 according to a first embodiment.

  A cutting apparatus 10 shown in FIG. 1 includes a table 16 on which a glass plate 14 with a cut line 12 is processed. The glass plate 14 is arranged so that the cut line 12 is positioned outward from an edge 18 of the table 16. Placed on.

  Moreover, the cutting device 10 includes a pair of holding members 20A and 20B that hold the lower surface and the upper surface in the width direction of one glass plate 14A facing each other across the cutting line 12 of the glass plate 14. These holding members 20A and 20B are arranged to face each other in the vertical direction.

  Rubber, resin, or plastic dampers 22A and 22B are attached to the glass contact surfaces of the holding members 20A and 20B, respectively. As shown in FIG. 2, the damper 22A does not touch the lower surface of the glass plate 14A without a gap. The damper 22B is in contact with the upper surface of the glass plate 14A without any gap. In addition, the holding member 20A is fixed in advance to a position where the holding member 20A contacts the lower surface of the glass plate 14A. On the other hand, the holding member 20B is attached to the upper surface of the glass plate 14A so as to be movable forward and backward. It is moved up and down by the vertical movement drive unit 24 shown in FIG.

  Further, the cutting device 10 includes a support member 26A that supports the lower surface in the width direction of the other glass plate 14B facing each other across the cutting line 12 of the glass plate 14. Moreover, the folding member 26B arrange | positioned with the predetermined clearance gap 28 (refer FIG. 2) with respect to the upper surface in the width direction of the glass plate 14B is also provided. The support member 26A and the folding member 26B are disposed to face each other in the up-down direction.

  Rubber, resin, or plastic dampers 30A and 30B are attached to the glass contact surfaces of the support member 26A and the folding member 26B, and the damper 30A is attached to the lower surface of the glass plate 14B as shown in FIG. The damper 30B is abutted with no gap, and the damper 30B is disposed apart from the upper surface of the glass plate 14B with the gap 28.

  The folding member 26B is attached to the upper surface of the glass plate 14B so as to be movable back and forth in the vertical direction, and is moved up and down by the vertical movement drive unit 32 shown in FIG. Further, the support member 26A and the folding member 26B constitute a cutting member that cuts the glass plate 14B along the cutting line 12 with respect to the glass plate 14A, and the shaft 34 set at a position below the cutting line 12 is the center. 1 is configured to be freely rotatable, and is integrally rotated by a rotation driving unit 36 shown in FIG.

  The operations of the vertical movement drive unit 24, the vertical movement drive unit 32, and the rotation drive unit 36 described above are controlled by a CPU 38 that controls the entire apparatus.

  In FIGS. 1 and 2, the glass contact surfaces of the dampers 30A and 30B are flat and parallel to the surface of the glass plate 14B. However, the present invention is not limited to this. For example, as shown in FIG. 3, the dampers 31 </ b> A and 31 </ b> B may be inclined surfaces inclined downward to the right.

  In addition, 14A of glass plates cut | disconnected along the cutting line 12 are handled as a glass plate of a product, and it transfers to a chamfering process after this. On the other hand, the cut glass plate 14 </ b> B is a so-called ear glass piece, which is crushed and reused after cutting.

  Next, the glass plate cutting method by the cutting apparatus 10 configured as described above will be described.

  First, the holding member 20B is moved downward by the vertical movement drive unit 24 from the initial position shown in FIG. 1, and the lower surface and the upper surface in the width direction of the glass plate 14A are moved by the pair of holding members 20A and 20B as shown in FIG. Hold.

  Next, the folding member 26B is moved downward from the initial position shown in FIG. 1 by the vertical movement drive unit 32, and the folding member 26B is arranged with a predetermined gap 28 as shown in FIG. 2 with respect to the upper surface of the glass plate 14B. . That is, the position in FIG. 2 is a position immediately before the start of cutting the glass plate 14.

  Next, the cutting member composed of the support member 26A and the folding member 26B is rotated in the clockwise direction as shown in FIG.

  By this rotation operation, of the lower surface edge portions E1 and E2 of the damper 30B of the folding member 26B, the lower surface edge portion E1 farthest from the cutting line 12 is pressed against the upper surface of the glass plate 14B. Then, as the folding member 26B rotates, the damper 30B of the folding member 26B gradually increases the area in contact with the glass plate 14B from the lower surface edge E1 toward the lower surface edge E2 closest to the cut line 12 as shown in FIG. It is pressed against the upper surface of the glass plate 14B while being enlarged.

  Although the glass plate 14B is cut along the cutting line 12 by the rotation of the folding member 26B, the cutting line 12 is not subjected to excessive force from the folding member 26B by the above-described contact area increasing operation of the folding member 26B. The cut surfaces of each of the plate 14A and the glass plate 14 are not chipped, so that the cut surfaces are good.

  Further, as shown in FIG. 6, when the glass plate 14 is cut, the cut surfaces of the glass plate 14A and the glass plate 14B are separated from each other, so that contact between the cut surfaces can be prevented and a good cut surface can be obtained.

  Further, since the gap 28 shown in FIG. 2 originally exists between the cut glass plate 14B and the folding member 26B, the cut glass plate 14B has its own weight between the support member 26A and the folding member 26B. It slips through and falls. Therefore, in order to drop the cut glass plate 14B, the operation of widening the interval between the support member 26A and the folding member 26B can be omitted.

  FIG. 7 is a side view of an essential part of the glass sheet cutting device 40 according to the second embodiment, and FIGS. 8A to 8C are operation explanatory views of the cutting device shown in FIG. is there.

  As shown in FIGS. 7 and 8 (a) to 8 (c), the glass plate 14 to be cut is held by suction on the upper surface of the glass plate 14A by a plurality of suction pads 42, 42... The lower surface of the glass plate 14 </ b> A is pressed against the table 44 by the pads 42, 42. Therefore, the glass plate 14 </ b> B is disposed outward from the edge 44 </ b> A of the table 44. Further, the suction pads 42, 42... And the table 44 constitute a pair of holding members.

  A support member 46A is disposed below the glass plate 14B, and a folding member 46B is disposed above. The folding member 46B is installed so as to be movable up and down, and is moved up and down by a vertical movement drive unit 48.

  The glass plate cutting method by the glass plate cutting device 40 according to the second embodiment configured as shown in FIG. 7 will be described.

  First, the folding member 46B is moved downward by the vertical movement drive unit 48, and the folding member 46B is disposed with a predetermined gap 28 on the upper surface of the glass plate 14B. That is, the position in FIG. 8A is the position immediately before the start of cutting the glass plate 14.

  Next, the cutting member composed of the support member 46A and the folding member 46B is rotated clockwise as shown in FIG. 8B around the shaft 34A set at the lower position of the cutting line 12 by a rotation drive unit (not shown). Rotate.

  As the folding member 46B rotates, the folding member 46B is pressed against the upper surface of the glass plate 14B while gradually increasing the area in contact with the glass plate 14B as shown in FIGS. 8B and 8C. To go.

  The glass plate 14B is cut along the cutting line 12 by the rotation operation of the folding member 46B. However, the cutting line 12 is not subjected to excessive force from the folding member 46B by the above-described contact area increasing operation of the folding member 46B. The cut surfaces of each of the plate 14A and the glass plate 14 are not chipped, so that the cut surfaces are good.

  Moreover, since the cut surfaces of the glass plate 14A and the glass plate 14B are separated from each other when the glass plate 14 is cut, contact between the cut surfaces can be prevented and a good cut surface can be obtained.

  Further, since the gap 28 shown in FIG. 8 (a) is originally between the cut glass plate 14B and the folding member 46B, the cut glass plate 14B is separated from the support member 46A and the folding member 46B. It falls through its own weight and falls. Therefore, in order to drop the cut glass plate 14B, the operation of widening the gap between the support member 46A and the folding member 46B can be omitted.

  FIGS. 9A to 9C are operation explanatory views of the glass plate cutting device 40 according to the third embodiment, and FIG. 10 is a plan view of the cutting device shown in FIG. It is. Moreover, FIG. 11 is the arrow view which looked at the cutting device 40 shown in FIG. 10 from the arrow AA line.

  The structure of the glass plate cutting device 40 according to the third embodiment is the same as that of the glass plate cutting device 40 according to the second embodiment except for the configuration of the folding member 46B. Description is omitted. In the present embodiment, the support member 46 </ b> A is also installed so as to be movable up and down, and is moved up and down by the vertical movement drive unit 48.

  The folding member 46B is a long member, and is disposed in parallel with the cutting line 12. The lower surface of the folding member 46B is inclined with respect to the upper surface of the glass plate 14B as shown in FIG. Thereby, when the folding member 46B comes into contact with the upper surface of the glass plate 14B, the folding start point of the glass plate 14B generated at the severing line 12 can be made one place.

  The glass plate cutting method by the glass plate cutting device 40 according to the third embodiment will be described.

  First, the folding member 46B is moved downward by the vertical movement drive unit 48, and the folding member 46B is disposed with a predetermined gap 28 on the upper surface of the glass plate 14B. That is, the position in FIG. 9A is the position immediately before the start of cutting the glass plate 14.

  When the folding member 46B is further moved downward toward the glass plate 14B from the position of FIG. 9A, the glass plate 14B is gradually moved from the one end a to the other end b as shown in FIG. 11 by the folding member 46B. The area where the folding member 46B and the glass plate 14B come into contact with each other gradually increases. Along with this, the cut line 12 is cracked from one end a toward the other end b. For this reason, since a plurality of cracks do not occur at the same time in the cut line, it is possible to reliably prevent cracking.

  Next, as shown in FIG. 9B, the glass plate 14B is sandwiched between the cutting members including the support member 46A and the folding member 46B.

  Further, the cutting member is rotated clockwise around a shaft 34A set at a position below the cutting line 12 by a rotation driving unit (not shown) as shown in FIG. Is folded along the cutting line 12.

  The support member 46A is lowered in the direction of the arrow shown in FIG. 9C by the downward movement of the support member 46A by the vertical movement drive unit 48 and the rotation operation by the rotation drive unit (not shown).

  Accordingly, a gap is formed between the cut glass plate 14B and the support member 46A as shown in FIG. 9C, so that the cut glass plate 14B has its own weight between the support member 46A and the folding member 46B. It slips through and falls.

  12 and 13 are overall perspective views showing an example of the cutting device 10 shown in FIGS.

  As shown in FIG. 12, the glass plate 14 to be cut is sucked and held by suction pads 52, 52... The glass plate 14 is pressed and fixed to the table 16 by the downward movement of the transfer machine 50, and in this state, the glass plate 14B is cut from the glass plate 14A by the cutting device 10 shown in FIGS.

  As shown in FIG. 13, the cut glass plate 14A is sucked and held by suction pads 56, 56... Of the transfer machine 54 for carrying out and is transported from the table 16 to a chamfering device (not shown).

Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the scope and spirit of the invention.
This application is based on Japanese Patent Application No. 2011-026200 filed on Feb. 9, 2011, the contents of which are incorporated herein by reference.

  DESCRIPTION OF SYMBOLS 10 ... Cutting device, 12 ... Cutting line, 14 ... Glass plate, 14A ... One glass plate, 14B ... The other glass plate, 16 ... Table, 18 ... Edge, 20A, 20B ... Holding member, 22A, 22B ... Damper, 24 ... vertical motion drive unit, 26A ... support member, 26B ... folding member, 28 ... gap, 30A, 30B, 31A, 31B ... damper, 32 ... vertical motion drive unit, 34, 34A ... shaft, 36 ... rotational drive unit, 38 ... CPU, 40 ... Cutting device, 42 ... Suction pad, 44 ... Table, 44A ... Edge, 46A ... Support member, 46B ... Folding member, 48 ... Vertical movement drive unit, 50 ... Transfer machine, 52 ... Suction pad, 54 ... Transfer machine, 56 ... Suction pad

Claims (6)

In the cutting method of the glass plate which cuts the glass plate processed with the cut line along the cut line,
The lower surface and the upper surface in the width direction of one glass plate facing each other across the cut line of the glass plate are held by a pair of holding members,
The lower surface in the width direction of the other glass plate facing each other across the cut line of the glass plate is supported by the support member, and the folding member is disposed with a predetermined gap with respect to the upper surface,
Of the lower surface edge portion of the folding member, the edge portion farthest from the cutting line is pressed and brought into contact with the upper surface of the other glass plate, and the cutting member made of the support member and the folding member is moved by the rotation drive unit. By rotating the lower position than the glass plate of the cut line as a rotation center,
The folding member gradually increases the area in contact with the glass plate from the lower surface edge portion farthest away from the cut line to the lower surface edge portion closest to the cut line as the folding member rotates. Pressed against the upper surface of the glass plate,
A method for cutting a glass plate, in which the glass plate is folded along the cut line and the cut surfaces of the cut glass plate are separated from each other. The glass plate cutting method according to claim 1, wherein the folding member is moved up and down with respect to the upper surface of the glass plate. In the cutting method of the glass plate which cuts the glass plate processed with the cut line along the cut line,
The lower surface and the upper surface in the width direction of one glass plate facing each other across the cut line of the glass plate are held by a pair of holding members,
The lower surface in the width direction of the other glass plate facing each other across the cut line of the glass plate is supported by the support member, and the folding member is disposed with a predetermined gap with respect to the upper surface,
The folding member is arranged as a long member in parallel with the cutting line, and the lower surface of the folding member is inclined with respect to the upper surface of the other glass plate, thereby starting the folding of the glass plate generated at the cutting line. One point,
The folding member is moved downward toward the glass plate, and the glass plate is gradually pressed from one end portion to the other end portion in the cutting line direction by the folding member, thereby moving the glass plate along the cutting line. And split it
A method for cutting a glass plate, in which a cutting member made of the support member and the folding member is rotated about a position below the cutting line as a rotation center by a rotation drive unit to separate the cut surfaces of the cut glass plates. In the cutting device of the glass plate for cutting the glass plate processed with the cut line along the cut line,
A pair of holding members that hold the lower surface and the upper surface in the width direction of one glass plate facing each other across the cut line of the glass plate;
A supporting member that supports the lower surface in the width direction of the other glass plate facing each other across the cut line of the glass plate, and a cutting member having a folding member disposed with a predetermined gap with respect to the upper surface;
A rotation drive unit that rotates the cutting member around a position below the glass plate of the cutting line as a rotation center;
Of the lower surface edge portion of the folding member, the edge portion furthest away from the cut line is pressed against the upper surface of the other glass plate, and the cutting member is moved more than the glass plate of the cut line by the rotation drive unit. The lower member is rotated about a lower position, and the folding member is brought into contact with the glass plate from a lower surface edge portion farthest from the cut line as the folding member is rotated toward a lower surface edge portion closest to the cut line. A CPU that controls to press and contact the upper surface of the glass plate while gradually increasing the area to be
A glass plate cutting device comprising: The glass plate cutting device according to claim 4 , further comprising a vertical movement drive unit configured to move the folding member up and down relative to an upper surface of the glass plate. In the cutting device of the glass plate for cutting the glass plate processed with the cut line along the cut line,
A pair of holding members that hold the lower surface and the upper surface in the width direction of one glass plate facing each other across the cut line of the glass plate;
A supporting member that supports the lower surface in the width direction of the other glass plate facing each other across the cut line of the glass plate, and a cutting member having a folding member disposed with a predetermined gap with respect to the upper surface;
A vertical movement drive unit for moving the folding member up and down with respect to the upper surface of the other glass plate;
A rotation drive unit that rotates the cutting member about a position below the cutting line as a rotation center;
The cutting member is a glass plate cutting device that is arranged as a long member in parallel with the cut line and tilts the lower surface of the folding member with respect to the upper surface of the other glass plate.

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