JP2013215823A - Grinding device and grinding method for plate-like body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grinding device and the like suitable for grinding outer peripheries of a plurality of kinds of plate-like bodies.SOLUTION: A grinding device 10 includes a suction head 20 that vacuum-sucks a plate-like body 2 and a grinding wheel 30 that grinds an outer periphery of the plate-like body 2 by making contact with the outer periphery of the plate-like body 2 vacuum-sucked to the suction head 20, the grinding device 10 for a plate-like body including a coupling body 60 magnetically coupled with the suction head 20 so that the plate-like body 2 is held between itself and the suction head 20.

Description

  The present invention relates to a grinding apparatus and a grinding method for grinding an outer periphery of a plate-like body.

  Conventionally, as a grinding device for grinding the outer periphery of a plate-like body such as a glass plate, an apparatus having an adsorption head for vacuum-adsorbing the plate-like body and a grindstone for grinding the outer periphery of the plate-like body vacuum-adsorbed by the adsorption head is known. (For example, refer to Patent Document 1). In this apparatus, a plurality of suction heads are provided, and each suction head is attached to any one of a plurality of attachment holes provided in the table. The attachment position and number of suction heads are determined according to the shape and size of the plate-like body.

Japanese Patent Laid-Open No. 11-300612

  However, in the conventional grinding apparatus, when the type of the plate-like body is changed, it is necessary to change the attachment position and the number of the suction heads according to the shape and size of the plate-like body. Along with this, it was necessary to open and close the connection path connecting the mounting hole provided in the table and the vacuum pump. For these reasons, there is a problem that the work is complicated and the configuration of the apparatus is complicated. Moreover, in order to solve these problems, if the area for vacuum-adsorbing the plate-like body is limited so as not to be influenced by the shape and size of the plate-like body, It is difficult to sufficiently fix the plate-like body when grinding the shape-like body.

  This invention is made | formed in view of the said subject, Comprising: It aims at providing the grinding apparatus and grinding method suitable for grinding of the outer periphery of multiple types of plate-shaped object.

In order to solve the above problems, the present invention provides:
In a plate-like body grinding apparatus comprising: a suction head that vacuum-sucks a plate-like body; and a grindstone that contacts the outer periphery of the plate-like body vacuum-sucked by the suction head and grinds the outer periphery of the plate-like body.
Provided is a plate-like body grinding apparatus comprising a coupling body that is magnetically coupled to the suction head so as to sandwich the plate-like body between the suction head and the suction head.

The present invention also provides:
In the plate-like body grinding method in which the plate-like body is vacuum-adsorbed to the suction head, and a grinding stone is brought into contact with the outer periphery of the plate-like body to grind the outer periphery of the plate-like body.
A plate-like body grinding method is provided, wherein the outer periphery of the plate-like body is ground while the plate-like body is sandwiched between the suction head and a coupling body magnetically coupled to the suction head.

  ADVANTAGE OF THE INVENTION According to this invention, the grinding apparatus and grinding method of a plate-shaped body suitable for grinding of the outer periphery of multiple types of plate-shaped body can be provided.

1 is a perspective view of a grinding apparatus according to an embodiment of the present invention. It is a partial cross section side view of a grindstone and its periphery. It is a schematic side view of a suction head and a coupling body. It is explanatory drawing (1) of the grinding method by one Embodiment of this invention. It is explanatory drawing (2) of the grinding method by one Embodiment of this invention. It is explanatory drawing (3) of the grinding method by one Embodiment of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

(Grinding device)
FIG. 1 is a perspective view of a grinding apparatus according to an embodiment of the present invention. FIG. 2 is a partial cross-sectional side view of the grindstone and its periphery.

  As shown in FIG. 1 and the like, the grinding device 10 includes a suction head 20, a grindstone 30, a moving device 40, a rotating device 50, a combined body 60, and a support device 70. The grinding device 10 grinds the outer periphery of the plate-like body 2 and performs chamfering.

  The grinding device 10 vacuum-sucks the plate-like body 2 to the suction head 20, brings the suction head 20 and the grindstone 30 close to each other, and brings the grindstone 30 into contact with the outer periphery of the plate-like body 2. In this state, the grindstone 30 is rotated while relatively moving the grindstone 30 along the outer circumference of the plate-like body 2, and the outer circumference of the plate-like body 2 is ground. Hereinafter, each configuration of the grinding apparatus 10 will be described in detail.

(Suction head)
The suction head 20 supports the plate-like body 2 by vacuum suction as shown in FIG. The upper surface of the suction head 20 becomes a support surface that supports the plate-like body 2. At least one suction hole is provided on the upper surface of the suction head 20. The suction hole is connected to a vacuum pump.

  When the vacuum pump is operated, the inside of the suction hole is depressurized and the plate-like body 2 is sucked by the suction head 20. In this state, when the vacuum pump stops operating and the inside of the suction hole is opened to the atmosphere, the suction is released.

  The suction head 20 is attached to the table 11. The suction head 20 may be detachably attached to the table 11 for repair or replacement.

  The table 11 is configured to be movable with respect to the grindstone 30. For example, the table 11 is supported on the base 12 so as to be rotatable in the θ direction, and is supported on the base 12 so as to be movable in the X direction.

  Instead of (or in addition to) the table 11, the grindstone 30 may be supported on the base 12 so as to be movable in the X direction.

  The dimensional shape, installation position, and number of installation of the suction head 20 are set as appropriate based on the size and shape of the plurality of types of plate-like bodies 2 to be ground, but the number of installation of the suction head 20 is one. good. This can simplify the apparatus.

  When only one suction head 20 is provided, the center of gravity of the plate-like body 2 may be vacuum-sucked. Thereby, the plate-like body 2 can be stably vacuum-sucked.

  When only one suction head 20 is provided, the support surface of the suction head 20 has a size smaller than any of the plurality of types of plate-like bodies 2 to be ground.

(Whetstone)
As shown in FIG. 2, the grindstone 30 contacts the outer periphery of the plate-like body 2 that is vacuum-sucked by the suction head 20 and grinds the outer periphery of the plate-like body 2.

  The grindstone 30 is connected to a rotating device 50 that is a drive source via a rotating shaft 34, and the rotating device 50 is fixed to the base 12. The grindstone 30 may be detachable from the rotating device 50 for repair or replacement.

  The grindstone 30 is accommodated in the housing 13. The inside of the housing 13 is connected to a suction pump. The suction pump exhausts the inside of the housing 13 to the outside, and thereby discharges grinding waste, grinding fluid, and the like of the grindstone 30 to the outside.

  The grindstone 30 has a disk shape and is disposed substantially horizontally in the housing 13, and the outer periphery of the grindstone 30 serves as a grinding surface 32. The grinding surface 32 is pressed against the outer peripheral surface of the plate-like body 2 and rounds the outer peripheral surface of the plate-like body 2.

  The housing 13 is fixed to the base 12 and has an opening 14 into which the peripheral edge of the plate-like body 2 is inserted. A brush 15 is attached in the vicinity of the opening 14. The brush 15 substantially closes the opening 14 and suppresses scattering of grinding waste and grinding liquid from the opening 14 to the plate-like body 2. One brush 15 is attached to each of the upper edge and the lower edge of the opening 14, and is in sliding contact with the upper surface or the lower surface of the plate-like body 2 inserted from the opening 14.

  In the housing 13, a nozzle 16 for spraying a grinding liquid toward a contact position between the grindstone 30 and the plate-like body 2 is provided in order to smoothly grind the plate-like body 2.

(Moving device)
The moving device 40 is a device that relatively moves the suction head 20 and the grindstone 30. The moving device 40 brings the suction head 20 and the grindstone 30 closer to bring the grindstone 30 into contact with the outer periphery of the plate-like body 2. The moving device 40 relatively moves the suction head 20 and the grindstone 30 to relatively move the grindstone 30 along the outer periphery of the plate-like body 2.

  The moving device 40 is constituted by, for example, a rotation motor or a linear motion motor. The rotation motor is a drive source that rotates the table 11 in the θ direction with respect to the base 12, and is accommodated in a case 44 provided in the vicinity of the table 11, for example. The linear motion motor is a drive source that moves the table 11 in the X direction with respect to the base 12, and is accommodated in a case 42 provided below the case 44, for example.

  The moving device 40 is connected to a control device composed of a computer or the like, and rotates the table 11 in the θ direction relative to the base 12 and / or moves in the X direction under the control of the control device. The suction head 20 and the grindstone 30 are moved relative to each other.

  Information about the relative movement path between the suction head 20 and the grindstone 30 (hereinafter referred to as “movement path information”) is recorded in advance on a recording medium such as a hard disk. A plurality of pieces of movement path information are recorded corresponding to a plurality of types of plate-like bodies 2. The control device reads one piece of movement path information from the recording medium based on an operation signal from an external input device such as a keyboard, and controls the movement device 40 according to the read movement path information.

  The moving device 40 of the present embodiment rotates the table 11 in the θ direction with respect to the base 12 and / or moves it in the X direction to move the suction head 20 and the grindstone 30 relative to each other. However, the present invention is not limited to this. For example, the suction head 20 and the grindstone 30 may be moved relative to each other by moving the grindstone 30 in the X direction with respect to the base 12.

(Rotating device)
The rotation device 50 is a drive source that rotates the grindstone 30 around the rotation shaft 34, and is constituted by, for example, a spindle motor. The rotating device 50 rotates the grindstone 30 around the rotation shaft 34 under the control of the control device when the moving device 40 relatively moves the grindstone 30 along the outer periphery of the plate-like body 2. The rotating device 50 is attached to the base 12 via the support body 17.

(Conjugate)
The combined body 60 is magnetically coupled to the suction head 20 so as to sandwich the plate-like body 2 between the suction head 20. If it does so, since the coupling body 60 will press the plate-shaped body 2 against the suction head 20, the static frictional force which acts between the plate-shaped body 2 and the suction head 20 will become high, and the position shift of the plate-shaped body 2 can be suppressed. Therefore, when the type of the plate-like body 2 is changed, it is not necessary to change the attachment position and the number of the suction heads 20 according to the shape and size of the plate-like body 2 as in the past.

  FIG. 3 is a schematic side view of the suction head and the combined body. As shown in FIG. 3, one of the suction head 20 and the combined body 60 (the combined body 60 in the present embodiment) has an electromagnet 62, and the other (the suction head 20 in the present embodiment) has a magnetic body 22. Yes. By energizing the electromagnet 62, the electromagnet 62 and the magnetic body 22 are magnetically coupled, and the suction head 20 and the coupling body 60 are magnetically coupled.

  The magnetic body 22 may be made of a hard magnetic material having a large holding force, or may be made of a soft magnetic material having a small holding force.

  The hard magnetic material is generally used for a permanent magnet or the like. Examples of the hard magnetic material include a ferrite magnet.

  A soft magnetic material is more likely to lose or reverse its magnetic pole by an external magnetic field than a hard magnetic material. Examples of the soft magnetic material include iron, silicon steel, permalloy, and soft ferrite. Since the soft magnetic material is hardly magnetized when the external magnetic field is lost, it is possible to suppress dust such as iron powder from adhering to the magnetic body 22 (and hence the adsorption head 20).

  The electromagnet 62 is configured, for example, by winding a coil 66 around a core 64 made of a soft magnetic material. The electromagnet 62 is magnetically coupled to the magnetic body 22 by starting energization of the coil 66. The magnetic coupling force is proportional to the number of turns of the coil 66 and the amount of current. When the energization of the coil 66 is released, the electromagnet 62 releases the magnetic coupling with the magnetic body 22 made of a soft magnetic material.

  The core 64 is made of a magnetic material having a high magnetic permeability because it passes through the lines of magnetic force when the coil 66 is energized and excited.

  For example, as shown in FIG. 3, the core 64 is formed in a U shape, and when the suction pad 20 and the coupling body 60 are magnetically coupled, both ends of the U-shaped core 64 are directed toward the magnetic body 22. (For example, downward). As a result, when the coil 66 is energized and excited, the magnetic lines of force 100 extend from one end of the U-shaped core 64 through the magnetic material 32 to the other end of the core 64, so that the magnetic coupling force can be improved.

  In addition, although the core 64 of this embodiment was formed in U shape, there is no restriction | limiting in the shape, For example, rod shape may be sufficient.

  In the present embodiment, one of the suction head 20 and the combined body 60 has an electromagnet and the other has a magnetic body. However, the present invention is not limited to this. For example, a permanent magnet may be used instead of an electromagnet. When using a permanent magnet, it is not necessary to pass an electric current.

(Supporting device)
If the region where the plate-like body is supported is limited by the size and shape, the installation position, and the number of installation of the suction head 20, the plate-like body may be deformed by its own weight. In this case, since the outer periphery of the plate-like body hangs down, it becomes difficult to contact the plate-like body and the grindstone. For example, as shown in FIG. 2, the support device 70 is a device that supports at least a part of the peripheral edge of the plate-like body 2 so that the outer periphery of the plate-like body 2 and the grindstone 30 are in contact with each other. The support device 70 is provided in the vicinity of the grindstone 30, and before the outer periphery of the plate-like body 2 comes into contact with the grindstone 30, at least one of the peripheral portions of the plate-like body is reduced so that the bending of the plate-like body 2 is reduced. Support the part.

  The support device 70 includes, for example, a movable body 72 that is movable in the vertical direction between a position that contacts the lower surface of the plate-like body 2 and a position that is separated from the lower surface of the plate-like body 2. The movable body 72 includes a ball 74 that can come into contact with the lower surface of the plate-like body 2 and a holder 76 that rotatably supports the ball 74 in order to suppress the occurrence of scratches on the lower surface of the plate-like body 2. .

  The movable body 72 is moved in the vertical direction by a drive source such as a fluid pressure cylinder 78. The movable body 72 is fixed to the upper end (rod) of the fluid pressure cylinder 78, and the lower end (cylinder body) of the fluid pressure cylinder 78 is fixed to the base 12. For example, a hydraulic cylinder or a pneumatic cylinder is used as the fluid pressure cylinder.

  As shown in FIGS. 4 and 5, when the movable body 72 is at the lower limit position, the movable body 72 is separated from the lower surface of the plate-like body 2 above the support device 70 and does not support the plate-like body 2. In this state, the plate-like body 2 is bent in a convex curved shape upward due to its own weight deformation. Note that the lower limit position is appropriately set according to, for example, the type of the plate-like body 2 and the size and shape of the suction head 20.

  On the other hand, as shown in FIG. 6, when the movable body 72 is in the upper limit position, the movable body 72 comes into contact with the lower surface of the plate-like body 2 above the support device 70 so that the deflection of the plate-like body 2 is reduced. At least a part of the peripheral edge of the body 2 is supported.

  The timing at which the movable body 72 is moved upward is set after the outer periphery of the plate-like body 2 passes above the movable body 72. Further, this timing is set before the plate-like body 2 is inserted into the opening 14 of the housing 13 when the grindstone 30 is accommodated in the housing 13.

  While the movable body 72 moves upward, the approach between the plate-like body 2 and the grindstone 30 by the moving device 40 may be temporarily stopped or may not be temporarily stopped.

  Thus, in this embodiment, since at least one part of the peripheral part of the plate-shaped body 2 is supported so that the outer periphery of the plate-shaped body 2 and the grindstone 30 may contact, the outer periphery of the plate-shaped body 2 hangs down. When changing the type of the plate-like body 2 without changing the mounting position and number of the suction heads 20 according to the shape and size of the plate-like body 2 as in the past, The plate-like body 2 and the grindstone 30 can be contacted.

  Since the grindstone 30 supports the outer periphery of the plate-like body 2 after the plate-like body 2 and the grindstone 30 come into contact with each other, the support device 70 may release the support of the plate-like body 2. In this case, the occurrence of scratches on the lower surface of the plate-like body 2 can be reduced. In addition, when continuing support of the plate-shaped body 2 by the support device 70, it can prevent that the outer periphery of the plate-shaped body 2 remove | deviates from the grindstone 30. FIG.

  In addition, the support apparatus 70 should just adjust the bending of at least 1 type of plate-shaped body 2 among the multiple types of plate-shaped bodies 2 used as grinding object, and adjusts the bending of all types of plate-shaped bodies 2. I don't have to. In the plate-like body 2 having a relatively small size, the deformation of its own weight is small before the plate-like body 2 and the grindstone 30 come into contact with each other.

(Grinding method)
Next, the grinding method by the grinding apparatus 10 having the above configuration will be described with reference to FIGS. Operations performed in the following steps are performed under control (or manual) by the control device.

  First, as shown in FIG. 4, the plate-like body 2 is placed on the suction head 20. When only one suction head 20 is provided, the center of gravity of the plate-like body 2 may be placed on the suction head 20. This operation is performed by a robot arm or the like.

  Next, the operation of the vacuum pump is started to vacuum-suck the plate-like body 2 to the suction head 20. In this state, the plate-like body 2 is bent in a convex curved shape upward due to its own weight deformation.

  Next, the combined body 60 is placed on the plate-like body 2. At this time, alignment is performed so that the combined body 60 and the suction head 20 face each other. This operation is performed by a robot arm or the like.

  Next, energization of the electromagnet 62 is started, the electromagnet 62 and the magnetic body 22 are magnetically coupled, and the coupled body 60 and the suction head 20 are magnetically coupled. If it does so, since the coupling body 60 will press the plate-shaped body 2 against the suction head 20, the static frictional force which acts between the plate-shaped body 2 and the suction head 20 will become high, and the position shift of the plate-shaped body 2 can be suppressed. Therefore, when the type of the plate-like body 2 is changed, it is not necessary to change the attachment position and the number of the suction heads 20 according to the shape and size of the plate-like body 2 as in the past.

  Next, as shown in FIG. 5, the suction head 20 and the grindstone 30 are brought closer to each other, and the grindstone 30 is brought closer to the plate-like body 2. And before the grindstone 30 contacts the outer periphery of the plate-like body 2, as shown in FIG. 6, at least a part of the peripheral portion of the plate-like body 2 is lifted to reduce the bending of the plate-like body 2. The plate-like body 2 is supported.

  Accordingly, the outer periphery of the plate-like body 2 can be prevented from sagging, and when the type of the plate-like body 2 is changed, the suction head is adapted to the shape and size of the plate-like body 2 as in the past. The outer periphery of the plate-like body 2 can be brought into contact with the grindstone 30 without changing the mounting position or number of the 20.

  Next, the suction head 20 and the grindstone 30 are relatively moved, the grindstone 30 is relatively moved along the outer periphery of the plate-like body 2, and the grindstone 30 is rotated around the rotation shaft 34, thereby the plate-like body 2. The outer periphery is ground over the entire circumference. At this time, the support of the plate-like body 2 by the support device 70 may be continued or may be released.

  Next, the suction head 20 and the grindstone 30 are moved away from each other, the grindstone 30 and the plate-like body 2 are separated from each other, and the plate-like body 2 is pulled out from the housing 13 that houses the grindstone 30.

  Finally, the energization of the electromagnet 62 is released to release the magnetic coupling between the coupling body 60 and the suction head 20, and then the coupling body 60 is removed from the plate-like body 2. Further, the vacuum pump is stopped, the inside of the suction hole of the suction head 20 is opened to the atmosphere, and after releasing the vacuum suction, the plate-like body 2 is removed from the suction head 20. In this way, the outer periphery of the plate-like body 2 is ground.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications and substitutions are made to the above embodiment without departing from the scope of the present invention. Can do.

  For example, the grindstone 30 of the above embodiment grinds the outer circumference of the plate-like body 2 over the entire circumference, but the outer circumference of the plate-like body 2 may be partially ground.

  Moreover, although the grindstone 30 of the said embodiment assumed that the outer periphery of the plate-shaped body 2 was chamfered roundly, there is no restriction | limiting in the kind of chamfering, For example, R chamfering may be sufficient and C chamfering may be sufficient.

  Moreover, the said embodiment is suitable when the plate-shaped body 2 is a brittle material, and is especially suitable for a glass plate. In addition, the present invention is an apparatus and method that are effective when grinding a vehicle window glass whose shape varies depending on the vehicle to which it is applied.

2 Plate 10 Grinding device 11 Table 12 Base 13 Housing 14 Opening 20 Adsorption head 22 Magnetic body 30 Grinding stone 40 Moving device 50 Rotating device 60 Combined body 62 Electromagnet 64 Core 66 Coil 70 Support device

Claims (11)

In a plate-like body grinding apparatus comprising: a suction head that vacuum-sucks a plate-like body; and a grindstone that contacts the outer periphery of the plate-like body vacuum-sucked by the suction head and grinds the outer periphery of the plate-like body.
An apparatus for grinding a plate-like body, comprising: a coupling body magnetically coupled to the suction head so that the plate-like body is sandwiched between the suction head and the suction head.   The plate-like body grinding apparatus according to claim 1, further comprising a support device that supports at least a part of a peripheral edge of the plate-like body so that an outer periphery of the plate-like body and the grindstone are in contact with each other. One of the adsorption head and the combined body has an electromagnet, the other has a magnetic body,
3. The plate-like body grinding apparatus according to claim 1 or 2, wherein when the electromagnet is energized, the electromagnet and the magnetic body are magnetically coupled, and the coupled body and the attraction head are magnetically coupled. The electromagnet is formed by winding a coil around a U-shaped core made of a soft magnetic material,
The plate-shaped body grinding apparatus according to claim 3, wherein when the combined body and the attraction head are magnetically coupled, the U-shaped core is disposed with both ends of the core facing the magnetic body.   The plate-shaped body grinding apparatus according to claim 1, wherein only one suction head is provided and vacuum-sucks the center of gravity of the plate-shaped body. In a grinding method in which the plate-like body is vacuum-adsorbed to the suction head, a grinding stone is brought into contact with the outer periphery of the plate-like body, and the outer periphery of the plate-like body is ground.
A plate-like body grinding method, wherein an outer periphery of the plate-like body is ground while the plate-like body is sandwiched between the suction head and a coupling body magnetically coupled to the suction head.   The plate-like body grinding method according to claim 6, wherein at least a part of a peripheral portion of the plate-like body is supported so that an outer periphery of the plate-like body and the grindstone are in contact with each other. One of the adsorption head and the combined body has an electromagnet, the other has a magnetic body,
The plate-like body grinding method according to claim 6 or 7, wherein the electromagnet and the magnetic body are magnetically coupled by energizing the electromagnet, and the coupled body and the attraction head are magnetically coupled. The electromagnet is formed by winding a coil around a U-shaped core made of a soft magnetic material,
The plate-like body grinding method according to claim 8, wherein when the coupling body and the attraction head are magnetically coupled, the U-shaped core is disposed with both ends of the core facing the magnetic body.   The plate-like body grinding method according to any one of claims 6 to 9, wherein only one suction head is provided and vacuum-sucks the center of gravity of the plate-like body.   The said plate-shaped body is a glass plate, The grinding method of the plate-shaped body of any one of Claims 6-10.

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