JP2012184130A - Cutting device and cutter device for rectangular plate-like object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device and a cutter device for a rectangular plate-like object capable of preventing (or reducing) crack or chip of the rectangular plate-like object caused by abutment of a cutter on one end face of the rectangular plate-like object.SOLUTION: This cutting device for a rectangular plate-like object has a constitution in which a cutter 12h positioned at a notched depth determined beforehand is allowed to abut on one end face of the rectangular plate-like object, and while moving the cutter toward the other end face on the opposite side, the surface of the rectangular plate-like object is flawed so as to have a start point for being cut and bent. The cutting device includes a cutter head body for supporting the cutter so as to be moved when a force in the vertical upper direction is applied to the cutter, a cutting pressure application means for pressing the cutter onto the surface of the rectangular plate-like object, and a detection means for detecting whether the cutter abuts on one end face of the rectangular plate-like object or not. When the detection means detects that the cutter abuts on one end face of the rectangular plate-like object, the cutting pressure application means presses the cutter onto the surface of the rectangular plate-like object.

Description

  The present invention relates to a glass cutting machine, and in particular, a rectangular plate-like material capable of preventing (or reducing) cracking and chipping of the rectangular plate-like material caused by the cutter coming into contact with one end surface of the rectangular plate-like material. The present invention relates to a cutting device and a cutter device used in the rectangular plate-like material cutting device.

  Conventionally, as shown in FIG. 10, the cutter C positioned at a predetermined cutting depth h is moved in the direction of an arrow which is a direction parallel to the surface g3 of the glass plate G (for example, the horizontal direction), After being brought into contact with one end surface g1 of the glass plate G, the cutter C is pressed against the glass plate G and further moved toward the other end surface g2 on the opposite side, and cut and folded on the surface g3 of the glass plate G. A glass cutting device configured to make a scratch (cut line) that is a starting point is known (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 08-283032

  However, in the glass cutting device described in Patent Document 1, when the cutter C comes into contact with the one end face g1 of the glass plate G, the cutter C does not move vertically upward. There is a problem that the glass plate G is broken or chipped by impact. In particular, when the glass plate G is thin (thickness of 3.0 mm or less), this problem becomes significant.

  This invention is made | formed in view of such a situation, and prevents the crack and a chip | tip of a rectangular plate-shaped object resulting from a cutter contacting the end surface of a rectangular plate-shaped object (for example, glass plate) ( An object of the present invention is to provide a rectangular plate-like material cutting device that can be (or reduced) and a cutter device used in the rectangular plate-like material cutting device.

  According to the first aspect of the present invention, the cutter positioned at a predetermined cutting depth is moved in parallel with the surface of the rectangular plate-like object to be cut and folded onto one end surface of the rectangular plate-like material. In the rectangular plate-shaped material cutting device configured to make a scratch as a starting point of cutting and folding on the surface of the rectangular plate-shaped material, while abutting and moving toward the other end surface on the opposite side, A cutter head main body that supports the cutter so as to move when a force in a vertically upward direction is applied to the cutter, a cutting pressure applying means that presses the cutter against the surface of the rectangular plate-like object, and the cutter includes the cutter Detecting means for detecting whether or not the one end surface of the rectangular plate-shaped object is in contact, and the cutting pressure applying means indicates that the cutter is in contact with one end surface of the rectangular plate-shaped object. The cutter when the detecting means detects Characterized in that it pressed against the surface of the rectangular plate-like material.

  According to the first aspect of the present invention, the cutter is supported so as to move (for example, in the vertical direction) when a vertically upward force is applied. It is possible to mitigate the impact when contacting the one end surface of the rectangular plate. Thus, it is possible to realize a rectangular plate-like material cutting device capable of preventing (or reducing) the cracking or chipping of the rectangular plate-like material caused by the cutter coming into contact with one end surface of the rectangular plate-like material. It becomes possible.

  According to a second aspect of the present invention, in the first aspect of the present invention, the cutter is supported by the head main body so as to be swingable in a vertical direction around the base end side while supporting the cutter via a cutter holder. When the cutter support arm comes into contact with the cutter support arm that swings vertically by its own weight, the cutter support arm is electrically connected to the cutter support arm, and the cutter support arm swings vertically downward. A contact point for regulating the power supply, wherein the detecting means detects a current-carrying state between the cutter support arm and the contact point, and the cutting-pressure applying means is a current-carrying power predetermined by the detecting means. When the state is detected, the cutter is pressed against the surface of the rectangular plate-like object.

  According to the second aspect of the present invention, when the cutter moving in parallel with the surface of the glass plate comes into contact with one end face of a rectangular plate-like object (for example, a glass plate), the cutter support arm comes into contact therewith. It is relatively pushed up by the action of the rectangular plate-shaped object, and swings vertically upward about the base end side. Thereby, a cutter runs on the surface of a rectangular plate-shaped object from the one end surface side of a rectangular plate-shaped object, without receiving the load of a cutting force provision means. Thereby, the impact when the cutter comes into contact with one end surface of the rectangular plate-like object is alleviated. Then, when it is detected that the cutter has run on the surface of the rectangular plate-shaped object (that is, when the detecting means detects a predetermined energization state), the cutter is not rectangular due to the action of the cutting pressure applying means. It is pressed against the surface of the plate-like object (that is, a cutting pressure is applied).

  As described above, according to the second aspect of the present invention, it is possible to mitigate the impact when the cutter abuts against one end surface of the rectangular plate-like object as compared with the conventional case where the cutter does not move. Thus, it is possible to realize a rectangular plate-like material cutting device capable of preventing (or reducing) the cracking or chipping of the rectangular plate-like material caused by the cutter coming into contact with one end surface of the rectangular plate-like material. It becomes possible.

  According to a third aspect of the present invention, in the second aspect of the present invention, the head main body is formed with a vertical hole as a cylinder extending from the lower surface in the vertical direction toward the vertical upper direction and an air passage communicating with the vertical hole. And an air source connected to the air passage via an electromagnetic valve, a piston disposed in the vertical hole, and air from the air source to the vertical hole via the air passage. And a control means for controlling the electromagnetic valve, and the cutter is in contact with the piston, which is pushed down vertically by the action of air supplied to the vertical hole, below the piston in the vertical direction. A support arm is arranged, and the control means air from the air source to the vertical hole through the air passage when the detection means detects a predetermined energized state. The solenoid valve is controlled so as to be supplied, and the piston is pushed down vertically by the action of air supplied to the vertical hole and comes into contact with the cutter support arm, and the cutter support arm is moved vertically downward. By swinging, the cutter is pressed against the surface of the rectangular plate-like object.

  According to the third aspect of the present invention, when the cutter moving in parallel with the surface of the glass plate comes into contact with one end face of a rectangular plate-like object (for example, a glass plate), the cutter support arm comes into contact therewith. It is relatively pushed up by the action of the rectangular plate-shaped object, and swings vertically upward about the base end side. Thereby, the cutter rides on the surface of the rectangular plate-like object from one end surface side of the rectangular plate-like object without receiving a load of the piston. Thereby, the impact when the cutter comes into contact with one end surface of the rectangular plate-like object is alleviated. Then, when it is detected that the cutter has run on the surface of the rectangular plate-like object (that is, when the detection means detects a predetermined energized state), the cutter is not moved by the action of the piston. Is pressed against the surface (that is, a cutting pressure is applied).

  As described above, according to the third aspect of the present invention, it is possible to mitigate the impact when the cutter comes into contact with the one end surface of the rectangular plate-like object as compared with the conventional case where the cutter does not move. Thus, it is possible to realize a rectangular plate-like material cutting device capable of preventing (or reducing) the cracking or chipping of the rectangular plate-like material caused by the cutter coming into contact with one end surface of the rectangular plate-like material. It becomes possible.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the position detection means for detecting the position of the cutter, the position detected by the position detection means, and a predetermined set range. Comparing means, and determining means for determining whether or not there is a crack in the rectangular plate-like object based on the comparison result of the comparing means, and the position detecting means When the detection means detects a predetermined energization state, the position of the cutter at that time is detected as the position of one end face of the rectangular plate-like object, and the comparison means is detected by the position detection means The position of the one end face of the rectangular plate-like object is compared with a predetermined setting range, and the determining means is configured to detect the rectangular plate-like object detected by the position detecting means based on a comparison result of the comparing means. Whether there is a crack on one end And judging a.

  According to the invention described in claim 4, it is possible to prevent (or reduce) cracks and chips of the rectangular plate-like material caused by the cutter coming into contact with one end surface of the rectangular plate-like material, and a rectangular shape. It is possible to realize a rectangular plate-like material cutting device capable of inspecting whether or not there is a crack on one end surface of the plate-like material.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, when the position detecting unit detects a predetermined energized state, the cutter at that time is detected. Is detected as the position of the other end face of the rectangular plate-like object, and the comparing means compares the position of the other end face of the rectangular plate-like object detected by the position detecting means with a predetermined set range. And the said determination means determines whether the crack exists in the other end surface of the said rectangular plate-shaped object which the said position detection means detected based on the comparison result of the said comparison means, It is characterized by the above-mentioned.

  According to the fifth aspect of the present invention, it is possible to prevent (or reduce) the cracking and chipping of the rectangular plate due to the cutter coming into contact with one end surface of the glass plate, and the rectangular plate It is possible to realize a rectangular plate-like object cutting device capable of inspecting whether or not there is a crack in the other end surface of the rectangular plate.

  According to a sixth aspect of the present invention, there is provided a cutter apparatus including a cutter for putting a scratch as a starting point of cutting and folding on a surface of a rectangular plate-like object to be cut and folded, and when a force in a vertically upward direction is applied to the cutter A head main body that supports the cutter so as to move to, and a cutting force applying means that presses the cutter against the surface of the rectangular plate when the cutter comes into contact with one end surface of the rectangular plate. It is characterized by providing.

  According to the sixth aspect of the present invention, it is possible to realize a rectangular plate-shaped article cutting device suitable for the rectangular plate-shaped article cutting device according to the first aspect.

  According to a seventh aspect of the invention, in the sixth aspect of the invention, the cutter is supported by the head main body through a cutter holder and swingable in a vertical direction around the base end side. When the cutter support arm comes into contact with the cutter support arm that swings vertically by its own weight, the cutter support arm is electrically connected to the cutter support arm, and the cutter support arm swings vertically downward. And a contact point that regulates.

  According to the seventh aspect of the invention, it is possible to realize a cutter device suitable for the rectangular plate-like object cutting device according to the first aspect.

  The invention according to claim 8 is the invention according to claim 7, wherein the head main body communicates with a vertical hole as a cylinder extending in the vertical upward direction from the lower surface in the vertical direction and the vertical hole, and an electromagnetic valve. An air passage to which an air source is connected is formed, and further, a piston disposed in the vertical hole is provided. Below the piston in the vertical direction, an action of air supplied to the vertical hole is provided. The cutter support arm is arranged so that the piston pushed down vertically is in contact with the piston.

  According to the eighth aspect of the present invention, it is possible to realize a cutter device suitable for the rectangular plate-like object cutting device according to the first aspect.

  As described above, according to the present invention, the rectangular plate shape that can prevent (or reduce) the cracking and chipping of the rectangular plate material caused by the cutter coming into contact with one end surface of the rectangular plate material. It becomes possible to provide a cutter device used in a cutting device for an object and a cutting device for the rectangular plate.

The figure for demonstrating the moving direction of the cutter apparatus. (A) The figure for demonstrating operation | movement of the cutter support arm 12f (cutter 12h). (B) The figure for demonstrating operation | movement of the cutter support arm 12f (cutter 12h). (C) The figure for demonstrating operation | movement of the cutter support arm 12f (cutter 12h). (D) The figure for demonstrating operation | movement of the cutter support arm 12f (cutter 12h). The system block diagram of the glass cutting machine 10. FIG. The block diagram of the cutter apparatus 12. FIG. The flowchart for demonstrating the operation example 1 of the glass cutter 10. FIG. The flowchart for demonstrating the operation example 2 of the glass cutter 10. FIG. The flowchart for demonstrating the operation example 2 (modification) of the glass cutting machine 10. FIG. Explanatory drawing of the general manufacturing process of a glass plate. The figure for demonstrating the moving direction (modified example) of the cutter apparatus. The figure for demonstrating the conventional glass cutting device.

  Hereinafter, a glass plate folding machine according to an embodiment of the present invention will be described with reference to the drawings.

[Outline of Glass Cutting Machine 10]
FIG. 8 is an explanatory diagram of a general manufacturing process of a glass plate. As shown in FIG. 8, a glass plate for a flat panel display (for example, a glass plate for a liquid crystal display (LCD), a glass plate for a plasma display (PDP), an organic EL display or a glass plate for an organic EL flat light source). In general, a cutting and folding step P1 for cutting and folding a glass plate manufactured to a predetermined thickness into a predetermined size, and chamfering the end surface of the glass plate after the cutting using a grinding wheel or a polishing wheel The chamfering process P2 is performed, the glass plate after the chamfering process is cleaned and dried P3, the measurement process P4 is performed to measure the outer shape of the glass plate after the cleaning and drying, and the like. .

  The glass cutting machine 10 is installed in the cutting and folding process P1 among the above processes. FIG. 1 is a view for explaining the moving direction of the cutter device 12. As shown in FIG. 1, the glass plate 20 to be cut and folded is a rectangular glass plate (for example, a length of several m × width of several m × thickness of several mm), and is formed by a known conveying means (not shown). It is conveyed, positioned and placed on the table 22 (see FIG. 2 a) of the glass cutter 10. In addition, the suitable size of the glass plate 20 in which a cutting line is processed with the glass cutting machine 10 is 0.1-3.0 mm in thickness.

  2a to 2d are views for explaining the operation of the cutter support arm 12f. As shown in FIGS. 2 a to 2 d, the glass cutting machine 10 is configured so that the cutter 12 h positioned at a predetermined cutting depth h using a known lifting mechanism or the like is parallel to the surface of the glass plate 20. Is moved in the direction of the arrow (see FIG. 2a) and brought into contact with one end surface 20a of the glass plate 20 (see FIG. 2b). Then, the cutter 12h is pressed against the glass plate 20 and further moved toward the other end surface 20b on the opposite side (see FIGS. 2c and 2d). It is configured to insert (cut line).

[Configuration of Glass Cutting Machine 10]
FIG. 3 is a system configuration diagram of the glass cutter 10. As shown in FIGS. 1 and 3, the glass cutting machine 10 includes four cutter devices 12 _{X1 to} 12 _Y2 and four cutter driving mechanisms 14 _{X1 to} 14 _Y2 arranged corresponding to the four sides of the glass plate 20. Furthermore, a control device 16 and a storage device 18 for controlling these are provided.

[Configuration of the cutter device 12 _{X1 to} 12 _Y2 ]
FIG. 4 is a configuration diagram of the cutter device 12. As shown in FIG. 4, the cutter device ₁₂ X1 _{to 12 Y2} includes a head main body 12a.

  The head main body 12a is formed with a vertical hole 12a2 as a cylinder extending from the lower surface 12a1 in the vertical direction toward the inside (that is, vertically upward) and an air passage 12a3 communicating with the vertical hole 12a2. A piston 12c is disposed in the vertical hole 12a2 via a slide bush 12b. An air source 12e is connected to the air passage 12a3 through an electromagnetic valve 12d.

  When the control device 16 controls the solenoid valve 12d to open, air of a predetermined pressure is supplied from the air source 12e to the vertical hole 12a2 through the air passage 12a3, and the piston 12c moves vertically by the action of the air. Pushed downward, the tip (the roller 12c1 supported by the tip) comes into contact with the cutter support arm 12f and applies a force that swings vertically downward with respect to the cutter support arm 12f (see FIG. 2b). Thereby, the cutter 12 h is pressed against the surface of the glass plate 20.

  The cutter support arm 12f is arranged below the piston 12c so that the piston 12c (the roller 12c1 supported at the tip of the piston 12c) pushed down vertically comes into contact.

  The cutter support arm 12f is supported by a bearing 12a4 whose base end side shaft 12f1 is fixed to the head body 12a. That is, the cutter support arm 12f is supported by the head body 12a so as to be swingable in the vertical direction about the shaft 12f1 on the base end side.

  The cutter holder 12g is supported by a bearing 12f2 whose shaft 12g1 is fixed to the cutter support arm 12f. That is, the cutter holder 12g is supported by the cutter support arm 12f so as to be rotatable about the shaft 12g1 in a direction parallel to the surface of the glass plate 20. The following effects can be obtained by rotatably supporting the cutter holder 12g. When the shaft 12g1 of the cutter holder 12g is attached to the bearing 12f2, even if the traveling direction of the cutter 12h and the traveling direction of the cutter device 12 do not coincide with each other, the cutter device 12 is held while the cutter 12h is in contact with the surface of the glass plate 20. If it advances, the advancing direction of the cutter 12h can be corrected in the same direction as the advancing direction of the cutter device 12.

  The cutter 12h is, for example, a disc-shaped cutter wheel (or cutter chip), and is supported by the cutter holder 12g in a state where at least a part of the cutter 12h protrudes further vertically below the lower end of the cutter holder 12g. This protruding portion is pressed against the surface of the glass plate 20 (see FIG. 2b).

  The cutter support arm 12f swings vertically downward about the shaft 12f1 by its own weight, and abuts on a contact 12i fixed to the head body 12a (see FIG. 2a). As a result, the contact point 12i is electrically connected to the cutter support arm 12f, and the swinging of the cutter support arm 12f in the vertically downward direction is restricted.

  The head main body 12a, the cutter support arm 12f, and the contact 12i are each made of a conductive material such as metal. The head body 12a and the cutter support arm 12f are electrically connected, but the contact point 12i is surrounded by an insulating material 12i1 such as a synthetic resin and is electrically insulated from the head body 12a.

[Configuration of Cutter Drive Mechanism 14 _X1 , 14 _X2 ]
Each of the cutter devices 12 _X1 and 12 _X2 is slidably mounted on, for example, two guide members (not shown) that extend in the X direction and are arranged at regular intervals. Similarly, the cutter devices 12 _Y1 and 12 _Y2 are slidably mounted on, for example, two guide members (not shown) that extend in the Y direction and are arranged at regular intervals.

The cutter driving mechanisms 14 _X1 and 14 _X2 shown in FIG. 3 are respectively for moving the cutter devices 12 _X1 and 12 _X2 in the X direction along guide members (not shown) extending in the X direction (see FIG. 1). It is a mechanism and includes a known lifting mechanism. Examples of the cutter driving mechanisms 14 _X1 and 14 _X2 include a servo including a ball screw connected to the cutter devices 12 _X1 and 12 _X2 and extending in the X direction, and a servo motor (none of which is shown) for rotating the ball screw. A mechanism can be used. Similarly, the cutter driving mechanisms 14 _Y1 and 14 _Y2 are mechanisms for _moving the cutter devices 12 _Y1 and 12 _Y2 linearly in the Y direction along guide members extending in the Y direction (see FIG. 1), respectively. Includes a lifting mechanism. As the cutter driving mechanisms 14 _Y1 and 14 _Y2 , for example, a ball screw connected to the cutter devices 12 _Y1 and 12 _Y2 and extending in the Y direction, a servo motor (not shown) for rotating the ball screw, and the like are used. It is possible to use a servo mechanism including.

The control device 16 shown in FIG. 3 and FIG. 4 includes calculation / control means such as an MPU and CPU, and the cutter / device 12 is executed by the calculation / control means executing a predetermined program read into the storage device 18. _{X1 to} 12 _Y2 functions as control means for controlling each servo motor so that _Y2 moves from the origin position to the command position.

  The control device 16 also functions as energization state detection means 16a that detects an energization state between the cutter support arm 12f (electrically connected to the head body 12a) and the contact 12i. Since the head main body 12a, the cutter support arm 12f, and the contact 12i are each made of a conductive material such as metal, when the cutter support arm 12f comes into contact with the contact 12i, the control device 16 makes contact with the cutter support arm 12f. “Energization” is detected as the energization state between the terminals 12i and 12i. On the other hand, when the contact of the cutter support arm 12f with the contact 12i is released, the control device 16 detects “non-energization” as the energization state between the cutter support arm 12f and the contact 12i.

  The control device 16 also functions as an electromagnetic valve control means for controlling the opening and closing of the electromagnetic valve 12d based on the energized state between the cutter support arm 12f and the contact point 12i.

  The storage device 18 shown in FIG. 3 is a storage device such as a RAM, and stores in advance a predetermined setting range (for example, a position of the end surface of a normal glass plate without cracks ± range of several millimeters). .

[Operation Example 1 of Glass Cutting Machine 10]
Next, an operation example 1 of the glass cutter 10 having the above configuration will be described with reference to FIG. FIG. 5 is a flowchart for explaining an operation example 1 of the glass cutter 10. The following processing is realized mainly by the control device 16 executing a predetermined program read into the storage device 18.

  In the following process, it is assumed that the glass plate 20 to be cut and folded is positioned and placed on the table 22 in advance.

First, the control device 16 raises and lowers the cutter 12h in the direction of the arrow in FIG. 4 using a known raising / lowering mechanism and positions the cutter 12h at a predetermined cutting depth h (see FIG. 2a). At the same time, each servo motor is controlled such that each cutter device 12 _{X1 to} 12 _Y2 (the cutter 12h) moves from the origin position to the command position (step S10).

Each servo motor rotates in accordance with control from the control device 16 and rotates the ball screw. As a result, the cutter devices 12 _X1 and 12 _X2 slide in the X direction (directions facing each other, see FIG. 1) along the guide members extending in the X direction from the origin position. Similarly, the cutter devices 12 _Y1 and 12 _Y2 slide and move in the Y direction (directions facing each other, see FIG. 1) along the guide member extending in the Y direction from the origin position. During this time, the cutter supporting arms 12f of the cutter device ₁₂ X1 _{to 12 Y2} is in contact with the contact 12i by the weight (see Figure 2a).

When the cutter 12h of each of the cutter devices 12 _X1 and 12 _X2 moving in the X direction comes into contact with the one end surfaces 20a and 20b of the glass plate 20, the cutter support arm 12f of each of the cutter devices 12 _X1 and 12 _X2 comes into contact with it. It is relatively pushed up by the glass plate 20 and swings vertically upward about the shaft 12f1. Thus, the cutter 12h of the cutter device ₁₂ X1, _{12 X2} is, one end surface 20a of the glass plate 20 without receiving the load of the piston 12c, runs onto the glass plate 20 from the surface 20b side (see Figure 2b). At the same time, the contact of the cutter support arm 12f with the contact 12i is released.

Similarly, each cutter device ₁₂ Y1, _{12 Y2} cutter 12h one end surface 20c of the glass plate 20 to move in the Y direction, when in contact with the 20d, the cutter supporting arms 12f of the cutter device ₁₂ Y1, _{12 Y2} its It is relatively pushed up by the abutting glass plate 20 and swings vertically upward about the shaft 12f1. Thereby, ride on the cutter device ₁₂ Y1, _{12 Y2} cutter 12h one end surface 20a of the glass plate 20 without receiving the load of the piston 12c, the glass plate 20 from the surface 20b side (see Figure 2b). At the same time, the contact of the cutter support arm 12f with the contact 12i is released.

If the contact for contact 12i of the cutter support arm 12f of the cutter device ₁₂ X1 _{to 12 Y2} is released, the control unit 16 detects the "de-energized" as energized state between the cutter supporting arm 12f and the contact 12i (Steps S12, S14: Yes).

  When “non-energization” is detected as the energization state between the cutter support arm 12f and the contact point 12i (step S14: Yes), the control device 16 determines in advance from the air source 12e to the vertical hole 12a2 via the air passage 12a3. The solenoid valve 12d is controlled so that air with the specified pressure is supplied (step S16).

  When air is supplied to the vertical hole 12a2, the piston 12c is pushed vertically downward by the action of the air, and the tip (the roller 12c1 supported by the piston 12c) comes into contact with the cutter support arm 12f. On the other hand, a force that swings vertically downward is applied (see FIG. 2b). Thereby, the cutter 12 h is pressed against the surface of the glass plate 20. That is, a cutting pressure is applied to the cutter 12h.

Each of the cutter devices 12 _X1 and 12 _X2 slides in the X direction while making a scratch extending in the X direction while the cutter 12h is pressed against the surface of the glass plate 20 (see FIGS. 2b and 2c).

Similarly, each of the cutter devices 12 _Y1 and 12 _Y2 slides in the Y direction while making a scratch extending in the Y direction with the cutter 12h being pressed against the surface of the glass plate 20 (see FIGS. 2b and 2c). .

  Next, the control device 16 determines whether or not the cutting operation is completed (step S18).

For example, the control device 16 determines whether or not each of the cutter devices 12 _{X1 to} 12 _Y2 has moved to the command position (or determines whether or not each of the cutter devices 12 _{X1 to} 12 _Y2 has moved a predetermined distance). When it is determined that the movement has been performed to the command position (or when it is determined that the movement has been performed for a predetermined distance), it is determined that the cutting operation has been completed.

Alternatively, when each of the cutter devices 12 _{X1 to} 12 _Y2 (the cutter 12h) reaches the other end surface of the glass plate 20, the cutter support arm 12f swings vertically downward and contacts the contact point 12i (see FIG. 2d). When “energization” is detected as the energization state between the cutter support arm 12f and the contact point 12i, it may be determined that the cutting operation has been completed.

  When it is determined that the cutting operation has ended (step S18: Yes), the control device 16 controls the electromagnetic valve 12d to be closed (step S20).

  Thus, the process ends.

  As described above, according to the present embodiment (operation example 1), the cutter 12h moving in the direction parallel to the surface of the glass plate 20 (X direction, Y direction) is the one end surface 20a of the glass plate 20, When it comes into contact with 20c, the cutter support arm 12f is relatively pushed up by the action of the glass plate 20 in contact therewith, and swings vertically upward about the shaft 12f1 on the base end side. Thereby, the cutter 12h rides on the surface of the glass plate 20 from the one end face 20a, 20c side of the glass plate 20 without receiving the load of the piston 12c. Thereby, the impact when the cutter 12h contacts the one end faces 20a, 20c of the glass plate 20 is alleviated. Then, when it is detected that the cutter 12h has run on the surface of the glass plate 20 (that is, when “non-energized” is detected as the energized state between the cutter support arm 12f and the contact 12i), the The cutter 12h is pressed against the surface of the glass plate 20 by the action of the piston 12c pushed down vertically by the action (that is, a cutting pressure is applied).

  As described above, according to the present embodiment (operation example 1), the cutter 12h is supported so as to move when a vertically upward force is applied. Therefore, the cutter 12h is compared with the conventional case where the cutter does not move. It is possible to mitigate the impact at the time of contact with one end surface of the glass plate 20. Thereby, it becomes possible to realize the glass cutter 10 capable of preventing (or reducing) the cracking and chipping of the glass plate 20 caused by the cutter 12h coming into contact with one end surface of the glass plate 20.

[Operation Example 2 of Glass Cutting Machine 10]
Next, an operation example 2 of the glass cutter 10 having the above configuration will be described with reference to FIG. FIG. 6 is a flowchart for explaining an operation example 2 of the glass cutter 10. The following processing is realized mainly by the control device 16 executing a predetermined program read into the storage device 18.

  In the following process, it is assumed that the glass plate 20 to be cut and folded is positioned and placed on the table 22 in advance.

First, the control device 16 positions the cutter 12h at a predetermined cutting depth h using a known lifting mechanism (see FIG. 2a). At the same time, each servo motor is controlled so that each cutter device 12 _{X1 to} 12 _Y2 (the cutter 12h) moves from the origin position to the command position (step S30).

Each servo motor rotates in accordance with control from the control device 16 and rotates the ball screw. As a result, the cutter devices 12 _X1 and 12 _X2 slide in the X direction (directions facing each other, see FIG. 1) along the guide members extending in the X direction from the origin position. Similarly, the cutter devices 12 _Y1 and 12 _Y2 slide and move in the Y direction (directions facing each other, see FIG. 1) along the guide member extending in the Y direction from the origin position. During this time, the cutter supporting arms 12f of the cutter device ₁₂ X1 _{to 12 Y2} is in contact with the contact 12i by the weight (see Figure 2a).

Each cutter device ₁₂ X1 of moving in the X direction, _{12 X2} of the cutter 12h is one end surface 20a of the glass plate 20, when in contact with the 20b, the cutter supporting arms 12f of the cutter device ₁₂ X1, _{12 X2} its abutment The glass plate 20 is relatively pushed up and swings vertically upward about the shaft 12f1. Thereby, ride on the cutter device ₁₂ X1, _{12 X2} of the cutter 12h one end surface 20a of the glass plate 20 without receiving the load of the piston 12c, the glass plate 20 from the surface 20b side (see Figure 2b). At the same time, the contact of the cutter support arm 12f with the contact 12i is released.

Similarly, each cutter device ₁₂ Y1, _{12 Y2} cutter 12h one end surface 20c of the glass plate 20 to move in the Y direction, when in contact with the 20d, the cutter supporting arms 12f of the cutter device ₁₂ Y1, _{12 Y2} its It is relatively pushed up by the abutting glass plate 20 and swings vertically upward about the shaft 12f1. Thereby, ride on the cutting device ₁₂ Y1, _{12 Y2} cutter 12h one end surface 20a of the glass plate 20 without receiving the load of the piston 12c, the glass plate 20 from the surface 20b side (see Figure 2b). At the same time, the contact of the cutter support arm 12f with the contact 12i is released.

If the contact for contact 12i of the cutter support arm 12f of the cutter device ₁₂ X1 _{to 12 Y2} is released, the control unit 16 detects the "de-energized" as energized state between the cutter supporting arm 12f and the contact 12i (Steps S32, S34: Yes). At the same time, the control device 16 uses the positions of the cutters 12 h of the respective cutter devices 12 _{X1 to} 12 _Y2 at that time (the position is acquired from the control device 16, for example) as the positions of the one end surfaces 20 a to 20 d of the glass plate 20. It detects (step S36).

  Then, the control device 16 determines the positions of the detected one end surfaces 20a to 20d of the glass plate 20 and a predetermined setting range (for example, the end surfaces of normal glass plates without cracks stored in the storage device 18 in advance). By comparing the position ± range of several millimeters), the glass plate 20 is determined to be broken (step S38).

  For example, if the position of the one end surfaces 20a to 20d of the detected glass plate 20 is outside a predetermined setting range, the control device 16 has a crack in the one end surfaces 20a to 20d of the detected glass plate 20. Then, it determines (step S38: No) and notifies that by displaying an alarm etc. (step S40).

  On the other hand, if the position of the one end surfaces 20a to 20d of the detected glass plate 20 is within a predetermined setting range, the control device 16 has cracks in the one end surfaces 20a to 20d of the detected glass plate 20. It determines with not (step S38: Yes).

  When it determines with the crack not existing in the end surfaces 20a-20d of the glass plate 20 (step S38: Yes), the control apparatus 16 is air of a predetermined pressure from the air source 12e to the vertical hole 12a2 via the air path 12a3. The electromagnetic valve 12d is controlled so that is supplied (step S42).

  When air is supplied to the vertical hole 12a2, the piston 12c is pushed vertically downward by the action of the air, and the tip (the roller 12c1 supported by the piston 12c) comes into contact with the cutter support arm 12f. On the other hand, a force that swings vertically downward is applied (see FIG. 2b). Thereby, the cutter 12 h is pressed against the surface of the glass plate 20. That is, a cutting pressure is applied to the cutter 12h.

Each of the cutter devices 12 _X1 and 12 _X2 slides in the X direction while making a scratch extending in the X direction while the cutter 12h is pressed against the surface of the glass plate 20 (see FIGS. 2b and 2c).

Similarly, each of the cutter devices 12 _Y1 and 12 _Y2 slides in the Y direction while making a scratch extending in the Y direction with the cutter 12h being pressed against the surface of the glass plate 20 (see FIGS. 2b and 2c). .

  Next, the control device 16 determines whether or not the cutting operation has been completed (step S44).

For example, the control device 16 determines whether or not each of the cutter devices 12 _{X1 to} 12 _Y2 has moved to the command position (or determines whether or not each of the cutter devices 12 _{X1 to} 12 _Y2 has moved a predetermined distance). When it is determined that the movement has been performed to the command position (or when it is determined that the movement has been performed for a predetermined distance), it is determined that the cutting operation has been completed.

  When it is determined that the cutting operation has ended (step S44: Yes), the control device 16 controls the electromagnetic valve 12d to close (step S46).

  Thus, the process ends.

  As described above, according to this embodiment (operation example 2), the cutter 12h moving in the direction parallel to the surface of the glass plate 20 (X direction, Y direction) is the one end surface 20a of the glass plate 20, When it comes into contact with 20c, the cutter support arm 12f is relatively pushed up by the action of the glass plate 20 in contact therewith, and swings vertically upward about the shaft 12f1 on the base end side. Thereby, the cutter 12h rides on the surface of the glass plate 20 from the one end face 20a, 20c side of the glass plate 20 without receiving the load of the piston 12c. Thereby, the impact when the cutter 12h contacts the one end faces 20a, 20c of the glass plate 20 is alleviated. Then, when it is detected that the cutter 12h has run on the surface of the glass plate 20 (that is, when “non-energized” is detected as the energized state between the cutter support arm 12f and the contact 12i), the The cutter 12h is pressed against the surface of the glass plate 20 by the action of the piston 12c pushed down vertically by the action (that is, a cutting pressure is applied).

  As described above, according to the present embodiment (operation example 2), the cutter 12h abuts against the one end surfaces 20a and 20c of the glass plate 20 as compared with the conventional case where the cutter does not move vertically (or hardly moves). The glass cutting machine 10 is capable of preventing (or reducing) cracking and chipping of the glass plate 20 due to the cutter 12h coming into contact with the one end faces 20a and 20c of the glass plate 20 by the amount of impact at the time. Can be realized. And it becomes possible to implement | achieve the glass cutter 10 which can test | inspect whether the crack exists in the end surfaces 20a and 20c of the glass plate 20. FIG.

[Modification of Operation Example 2]
Next, a modified example of the operation example 2 will be described.

  Instead of S44 to S46 in FIG. 6, the processing shown in FIG. 7 (S48 to S56) may be performed.

When each cutter device 12 _{X1 to} 12 _Y2 (the cutter 12h) reaches the other end surface of the glass plate 20, the cutter support arm 12f swings vertically downward and contacts the contact 12i (see FIG. 2d).

In this case, the control device 16 detects “energization” as the energization state between the cutter support arm 12f and the contact point 12i (step S48: Yes). At the same time, the control device 16 uses the positions of the cutters 12 h of the respective cutter devices 12 _{X1 to} 12 _Y2 at that time (acquired from the control device 16, for example) as the positions of the other end surfaces 20 a to 20 d of the glass plate 20. It detects (step S50).

  Then, the control device 16 determines the positions of the other end surfaces 20a to 20d of the detected glass plate 20 and a predetermined setting range (for example, the end surface of a normal glass plate without cracks stored in the storage device 18 in advance). By comparing the position ± range of several millimeters), the glass plate 20 is determined to be broken (step S52).

  For example, if the position of the other end surfaces 20a to 20d of the detected glass plate 20 is outside a predetermined setting range, the control device 16 has cracks in the other end surfaces 20a to 20d of the detected glass plate 20. Then, it determines (step S52: No) and notifies that by displaying an alarm etc. (step S54).

  On the other hand, if the position of the other end surfaces 20a to 20d of the detected glass plate 20 is within a predetermined setting range, the control device 16 has cracks on the other end surfaces 20a to 20d of the detected glass plate 20. It determines with not (step S52: Yes), and it controls to close the solenoid valve 12d (step S56).

  Thus, the process ends.

  As described above, according to the present modification (modified example of the operation example 2), the glass plate 20 is prevented from being broken or chipped due to the cutter 12h coming into contact with the one end surfaces 20a and 20c of the glass plate 20 ( In addition, it is possible to realize the glass cutter 10 that can inspect whether or not there are cracks in the other end surfaces 20b and 20d of the glass plate 20.

  Next, a modified example will be described.

  In the above-described embodiment, the example in which the piston 12c that is pushed down vertically by the action of air is used as the cutting pressure application unit that applies a force that swings vertically to the cutter support arm 12f has been described. Is not limited to this. For example, a solenoid valve or other means may be used as the cutting pressure application means. This eliminates the need for a configuration (such as the electromagnetic valve 12d and the air source 12e) for pushing down the piston 12c vertically downward.

  Moreover, although the said embodiment demonstrated the example using the solenoid valve 12d and the air source 12e, this invention is not limited to this. For example, an electropneumatic regulator may be used in place of the electromagnetic valve 12d and the air source 12e.

  Moreover, although the said embodiment demonstrated the example using the slide bush 12b and the roller 12c1, this invention is not limited to this. The slide bush 12b and the roller 12c1 can be omitted as appropriate.

  In the above embodiment, the cutter holder 12g is described as being supported by the cutter support arm 12f so as to be rotatable about the shaft 12g1, but the present invention is not limited to this. For example, the cutter holder 12g may be fixedly supported by the cutter support arm 12f.

In the above embodiment, an example (see FIG. 1) in which each cutter device 12 _X1 , 12 _X2 (same for each cutter device 12 _Y1 , 12 _Y2 ) is moved in the opposite direction has been described. It is not limited to. For example, as shown in FIG. 9, the cutter devices 12 _X1 and 12 _X2 (the same applies to the cutter devices 12 _Y1 and 12 _Y2 ) may be moved in the same direction.

In the above embodiment, an example has been described using four cutter device 12 _X1 to 12 _Y2, the present invention is not limited thereto. For example, 1 to 3, or 5 or more cutter devices may be used.

Further, in the above-described embodiment, an example has been described in which each of the cutter devices 12 _{X1 to} 12 _Y2 is moved so that the shaft 12f1 on the base end side of the cutter support arm 12f is on the traveling direction side (see FIGS. 2a to 2d). However, the present invention is not limited to this. For example, each of the cutter devices 12 _{X1 to} 12 _Y2 may be moved so that the distal end portion opposite to the base end portion of the cutter support arm 12f is on the traveling direction side.

  Moreover, although the said embodiment demonstrated the example in which the glass plate 20 to be cut / folded is a glass plate for a flat panel display, the present invention is not limited to this. For example, any rectangular plate-like object such as a glass plate for automobiles or a resin plate can be used as the object to be cut and folded.

  In the above embodiment, the cutter support arm 12f has been described as being supported by the head body 12a so as to be swingable in the vertical direction around the shaft 12f1 on the base end side. However, the present invention is not limited to this. Not (see FIG. 4). For example, the cutter support arm 12f may be supported by the head body 12a so as to be linearly movable in the vertical direction.

  In the above-described embodiment, the control device 16 has been described so as to apply a cutting pressure to the cutter 12h when detecting “non-energized” as the energized state between the cutter support arm 12f and the contact 12i. However, the present invention is not limited to this. For example, when the control device 16 detects “energization” as the energization state between the cutter support arm 12f and the contact 12i, a cutting pressure may be applied to the cutter 12h.

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

10 ... glass _opener, 12 X1 to 12 _{Y2 ...} cutter device, 12a ... head body, 12a2 ... vertical hole (cylinder), 12a3 ... air passages, 12a4 ... bearing, 12b ... slide bush, 12c ... piston, 12 c 1 ... roller, 12d ... solenoid valves, 12e ... air source, 12f ... cutter support arms, 12 f 1 ... shaft, 12 f 2 ... bearing, 12 g ... cutter holder, 12g1 ... shaft, 12h ... cutter, 12i ... contact, 12i1 ... insulating _materials, 14 X1 _{to 14 Y2} ... Cutter drive mechanism, 16 ... Control device, 18 ... Storage device, 20 ... Glass plate

Claims (8)

A cutter positioned at a predetermined cutting depth is moved parallel to the surface of the rectangular plate to be cut and brought into contact with one end surface of the rectangular plate, and the other side In the rectangular plate-shaped article cutting device configured to make a scratch that becomes a starting point of cutting and folding on the surface of the rectangular plate-shaped article while moving toward the other end surface,
A cutter head body that supports the cutter so as to move when a vertical upward force is applied to the cutter;
Cutting pressure applying means for pressing the cutter against the surface of the rectangular plate-like object;
Detecting means for detecting whether or not the cutter is in contact with one end surface of the rectangular plate-like object;
With
The cutting pressure applying means presses the cutter against the surface of the rectangular plate-like object when the detecting means detects that the cutter is in contact with one end surface of the rectangular plate-like object. A rectangular plate-like material cutting device. A cutter support arm supported by the head body so as to be swingable in a vertical direction around the base end side while supporting the cutter via a cutter holder;
A contact that is electrically connected to the cutter support arm by the abutting of the cutter support arm that swings vertically by its own weight, and that regulates the swing of the cutter support arm in the vertically downward direction; and
Further comprising
The detecting means detects a current-carrying state between the cutter support arm and the contact;
2. The rectangular plate shape according to claim 1, wherein the cutting pressure applying unit presses the cutter against a surface of the rectangular plate-like object when the detection unit detects a predetermined energization state. Thing cutting device. In the head body, a vertical hole as a cylinder extending in the vertical upward direction from the vertical lower surface and an air passage communicating with the vertical hole are formed.
further,
An air source connected to the air passage via a solenoid valve;
A piston disposed in the longitudinal hole;
Control means for controlling the solenoid valve so that air is supplied from the air source to the vertical hole through the air passage;
With
The cutter support arm is arranged below the piston in the vertical direction so that the piston pressed down vertically by the action of air supplied to the vertical hole comes into contact with the piston.
The control means controls the solenoid valve so that air is supplied from the air source to the vertical hole through the air passage when the detection means detects a predetermined energization state;
The piston is pushed down vertically by the action of air supplied to the vertical hole, contacts the cutter support arm, and swings the cutter support arm in the vertical downward direction, thereby moving the cutter to the rectangular plate. 3. The rectangular plate-shaped material cutting device according to claim 2, wherein the device is pressed against the surface of the material. Position detecting means for detecting the position of the cutter;
Comparing means for comparing the position detected by the position detecting means with a predetermined setting range;
Based on the comparison result of the comparison means, determination means for determining whether or not there is a crack in the rectangular plate-like object,
With
The position detection means detects the position of the cutter at that time as the position of one end face of the rectangular plate-like object when the detection means detects a predetermined energization state,
The comparison means compares the position of one end surface of the rectangular plate detected by the position detection means with a predetermined setting range,
The determination means determines whether or not there is a crack in one end surface of the rectangular plate-like object detected by the position detection means based on a comparison result of the comparison means. The rectangular plate-shaped material cutting device according to any one of 3. The position detection means detects the position of the cutter at that time as the position of the other end face of the rectangular plate-like object when the detection means detects a predetermined energization state,
The comparing means compares the position of the other end surface of the rectangular plate-like object detected by the position detecting means with a predetermined setting range,
The determination means determines whether or not there is a crack in the other end face of the rectangular plate-like object detected by the position detection means based on the comparison result of the comparison means. The rectangular plate-shaped material cutting device according to claim 4. In a cutter apparatus provided with a cutter for putting a scratch as a starting point of cutting and folding on the surface of a rectangular plate-like object to be cut and folded,
A head body that supports the cutter so as to move when a vertical upward force is applied to the cutter;
A cutting force applying means for pressing the cutter against the surface of the rectangular plate when the cutter comes into contact with one end surface of the rectangular plate;
A cutter apparatus comprising: A cutter support arm supported by the head body so as to be swingable in a vertical direction around the base end side while supporting the cutter via a cutter holder;
A contact that is electrically connected to the cutter support arm by the abutting of the cutter support arm that swings vertically by its own weight, and that regulates the swing of the cutter support arm in the vertically downward direction; and
The cutter apparatus according to claim 6, further comprising: The head main body is formed with a vertical hole as a cylinder extending in the vertical upward direction from the lower surface in the vertical direction and an air passage to which the air source is connected via the electromagnetic valve.
And a piston disposed in the longitudinal hole,
8. The cutter support arm is arranged below the piston in a vertical direction so that the piston pushed down vertically by the action of air supplied to the vertical hole comes into contact with the piston. The cutter apparatus as described.

Images