TWI696520B - Device for processing end face of plate - Google Patents

Abstract

The present invention is to provide an end-face processing device that grinds the end face of a plate-like object such as plate glass with the outer circumference of a detachable rotating whetstone, and does not spend time on the replacement work of the rotating whetstone and does not incur "Face processing device for plate-like objects" with reduced production efficiency.

The end surface processing device of the plate-shaped object of the present invention is an end surface processing device (1) for processing the end surface of the plate glass (W) by being attached to and detached from the outer peripheral surface of the rotating whetstone (20) of the rotating means (21) After the grooves (20c) have not been formed, the rotating whetstone (20) is attached to the rotating means (21), and a ring along the circumferential direction is formed on the outer peripheral surface of the rotating whetstone (20) The above-mentioned groove portion (20c).

Description

Device for processing end face of plate

The present invention relates to a technique of an end surface processing device for a plate-like object, which processes the end surface of the plate-like object by the outer peripheral surface of a rotatable whetstone that can be detached.

In recent years, the field of utilization of plate-like materials such as glass or ceramics has been expanding. For example, in the field of utilization of flat screens or smartphones, the demand for thin-thick plate glass has grown rapidly.

Such plate glass is formed into a long strip shape by an overflow downdraw method, for example. At this time, thick-walled bead portions are formed on both sides of the width direction of the plate glass after molding compared to the center portion in the width direction.

Then, the long strip-shaped plate glass is cut (cut) in the width direction, and then cut and removed on both sides including the bead portion to be cut into a rectangular plate shape of a predetermined size.

In this way, a rectangular plate-shaped plate glass formed as a glass substrate of equal thickness, and then, for each end face after cutting, as shown in Patent Document 1, for example, an annular groove portion is formed in advance on the outer circumferential surface Rotate the whetstone and apply The rough grinding process and the end surface processing such as fine grinding process are formed into the final product.

Here, the conventional end surface processing device 101 will be described using FIG. 7.

FIG. 7(a) is a plan view showing the overall configuration of a conventional end face processing apparatus 101; FIG. 7(b) is an enlarged front view seen from the direction of arrow Y in FIG. 7(a).

In the following description, for convenience of description, the direction of arrow A in FIG. 7(a) will be described as being in front of the end surface processing apparatus 101. In addition, in FIG. 7(b), the vertical direction is described as the vertical direction of the end surface processing apparatus 101.

As shown in FIG. 7(a), the end surface processing device 101 is mainly formed by a rectangular adsorption platform when viewed in plan (plan view) when it is arranged to extend horizontally and in the front-rear direction (direction parallel to the arrow A). 110. There are also a plurality of rotating whetstones 120, 120, etc. arranged in a row in the front-rear direction on both sides of the adsorption platform 110 in the left-right direction (the direction perpendicular to the extending direction of the adsorption platform 110 when viewed from the plane) constitute.

Numerous small suction holes (not shown) are penetrated on the upper surface of the suction platform 110.

Moreover, the rectangular plate-shaped plate glass W is adsorbed on the adsorption platform 110 via these suction holes, and is held firmly.

At this time, the plate glass W extends horizontally and in the front-rear direction, and the left and right side edges are exposed to the outside of the adsorption platform 110. The posture is maintained on the upper surface of the suction platform 110.

On the other hand, the plurality of rotating whetstones 120, 120... located on the left and right sides of the adsorption platform 110 are composed of a plurality of rotating whetstones 120 for rough grinding (hereinafter, as appropriate It is generally referred to as "rotating whetstone 120X for rough grinding", 120..., and rotating whetstone 120 for fine grinding (hereinafter, appropriately described as "rotating whetstone 120Y for fine grinding").

In addition, these rotating whetstones 120, 120... are detachably arranged in the direction of the axial center as the thickness direction of the plate glass W, that is, in the vertical direction (in the side view as the extension direction of the suction platform 110 is Vertical intersection direction), and set to be able to rotate around the axis.

In addition, the plurality of rotating whetstones 120, 120... located on the left and right sides of the suction platform 110 are integrated, and can face the suction platform 110 from the front to the rear (in FIG. 7(a)) The direction of arrow B).

When the end surface processing of the sheet glass W is performed by the conventional end surface processing apparatus 101 having such a structure, a plurality of rotating whetstones 120, 120, which are rotationally driven around the axis, are brought into contact with the plate The end surfaces on the left and right sides of the glass W are moved integrally from the front toward the rear, facing the suction platform 110 (more specifically, the plate glass W).

At this time, as shown in FIG. 7(b), the side edges of the left and right sides of the plate glass W are inserted into the annular groove portion 120a formed on the outer peripheral surface of each rotating whetstone 120, and The end surface of the side edge portion is in contact with the groove The bottom surface of the groove 120a.

In this way, when processing the end surface of the sheet glass W, conventionally, an annular groove portion 120a composed of a wide dimension approximately the same as the thickness dimension of the sheet glass W is generally formed on the outer peripheral surface thereof Rotating whetstone 120X for rough grinding, through its groove portion 120a, is in contact with the end surface of the plate glass W and rough grinding is carried out, and then, the ring groove portion 120a composed of the same shape is formed on the outer peripheral surface of the fine The rotating grindstone 120Y for grinding is finely ground while contacting the end surface of the plate glass W through the groove portion 120a.

[Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2008-93744

As described above, in the conventional end surface processing apparatus, the end surface processing is continuously performed while gripping the end surface of the plate-like object through the annular groove portion formed in advance on the outer peripheral surface of the rotating whetstone. Every time the replacement of the rotating grindstone (more specifically, the operation of replacing the rotating grindstone that has reached the end of its life with an unused new rotary grindstone), it is necessary to carry out the position to make the annular groove part, Adjustment work consistent with the position of the end face of the plate glass.

Therefore, it takes time to replace the rotating whetstone. The loss of production time has become the main factor inducing the reduction of production efficiency.

The present invention was developed in view of the problems described above, and its object is to provide an end surface processing device that grinds the end surface of a plate-like object such as plate glass with the outer circumference of a detachable rotating grindstone, and It does not spend time on the replacement work of the rotating whetstone, nor does it cause the production efficiency to be reduced.

The problem to be solved by the present invention is as described above, and the means for solving the problem will be described next.

That is, the end surface processing device of the plate-like object of the present invention is an end surface processing device that processes the end surface of the plate-like object by attaching and detaching to the outer peripheral surface of the rotating whetstone of the rotating means, and is characterized by After the rotating whetstone in a state where the groove portion is not formed is attached to the rotating means, an annular groove portion along the circumferential direction is formed on the outer peripheral surface of the rotating whetstone.

According to the end face processing device of the plate-like object in the present invention as described above, since it is not necessary to perform adjustment work after installing the rotating stone to the rotating means, it does not take time to replace the rotating stone and does not incur a reduction in production efficiency

In addition, in the end surface processing device of the plate-shaped object of the present invention, the end surface processing device includes groove forming means for forming an annular groove portion along the circumferential direction on the outer peripheral surface of the rotating grindstone , The above-mentioned groove forming means is used The corresponding position, that is, the groove portion is formed on the outer peripheral surface of the rotating whetstone as a feature.

According to the end face processing device of the plate-like object of the present invention as described above, no special adjustment work is required for the rotating whetstone just after being mounted on the rotating means, and the groove forming means can be used to form the annular groove Appropriate position of the outer peripheral surface of the rotating whetstone.

Furthermore, in the end surface processing device of the plate-like object of the present invention, the above-mentioned end surface processing device alternately performs a processing process and a preparation process, and the processing process is to process the above-mentioned end surface of the plate-like object by the rotating whetstone The preparation process is to prepare for subsequent processing of the end face of the plate-like object. In the implementation of the preparation process, the groove is formed on the outer peripheral surface of the rotating whetstone by the groove forming means , As its characteristic.

In this way, according to the end face processing device of the plate-like object of the present invention, since the preparation process for preparing the subsequent end face processing (grinding) of the plate-like object is carried out on one side (for example, the rotating whetstone which has just been subjected to the processing process, again Perform a reset operation that moves to the grinding start position, etc., and form a new ring-shaped groove on the outer peripheral surface of the rotating whetstone, so there is no need to provide a new step for forming the groove, so there is no time Loss incurs a reduction in production efficiency.

In addition, in the end surface processing device of the plate-like object of the present invention, the groove forming means includes a blade portion and a switching means, the blade portion is for a position corresponding to the end surface of the plate-like object, That is, the annular groove portion is formed on the outer peripheral surface of the rotating whetstone. The switching means can switch between the contact position where the blade portion abuts the outer peripheral surface of the rotating whetstone and the spaced position where the blade portion is separated from the outer peripheral surface of the rotating whetstone as Its characteristics.

In this manner, according to the end face processing device of the plate-like object of the present invention, since the position of the blade portion is adjusted in advance to a position corresponding to the end face of the plate-like object, the ring immediately after being formed by the groove forming means The groove portion is always opposed to the end surface of the plate-like object, so it is not necessary to adjust the position of the groove portion again.

On the other hand, the end surface processing device of the plate-shaped object of the present invention may be characterized by forming the groove portion by processing the end surface of the plate-shaped object.

In this way, in the end surface processing apparatus of the plate-shaped object of the present invention, the ring-shaped groove portion can also be formed on the outer peripheral surface of the rotating whetstone by the plate-shaped object as the workpiece, in this case, it can be easily Ground formation: An annular groove portion formed by a more suitable shape and arrangement position.

In addition, the end surface processing device of the plate-shaped object of the present invention may be characterized by processing the regions other than the both end portions of the end surface of the plate-shaped object to form the groove portion.

In this case, the outer peripheral surface of the rotating whetstone can not only be easily formed: an annular groove formed by a more suitable shape and arrangement position can also prevent chattering near the end surface of the plate-like object, and can ensure The quality of the plate after processing.

In addition, the end face processing device of the plate-like object of the present invention, the above-mentioned rotating whetstone is provided to be movable along the direction of the rotation axis as Its characteristics.

By having such a configuration, according to the end face processing device of the plate-like object of the present invention, it is not necessary to perform a laborious replacement operation such as replacing the rotating whetstone itself, as long as the rotating whetstone is moved along the direction of the axis of rotation by a predetermined The amount of pitch can easily create a state where a new annular groove portion can be formed.

According to the end face processing device of the plate-shaped object of the present invention, there is no need to spend time on the replacement work of the rotating whetstone, nor does it incur a decrease in production efficiency.

1‧‧‧Face processing device

10‧‧‧Adsorption platform

20‧‧‧revolving whetstone

20a‧‧‧Metal base

20b‧‧‧grain layer

20c‧‧‧Groove

30‧‧‧Groove forming mechanism (groove forming means)

31‧‧‧Rotating arm

32‧‧‧Rotating shaft

33‧‧‧Bearing components

34‧‧‧Blade

35‧‧‧Bounce means

36‧‧‧Actuator

36a‧‧‧Telescopic pole

a‧‧‧The distance between the rotating shaft 32 and the elastic pulling means 35

b‧‧‧The distance between the rotating shaft 32 and the blade 34

A‧‧‧Front of the end face processing device 1

B‧‧‧ Rear of the end face processing device 1

W‧‧‧plate glass (plate-like)

Fig. 1 is a plan view showing the overall structure of a rotating whetstone and a groove forming mechanism part in an end face processing device according to an embodiment of the present invention.

FIG. 2 is a diagram showing the overall structure of the rotating whetstone and the groove forming mechanism, and is also an enlarged front view seen from the arrow direction X in FIG. 1.

FIG. 3 is a schematic plan view of the moving direction of the rotating whetstone and the groove forming mechanism shown as time passes.

FIG. 4 is a flow chart showing the sequence of processing the end surface of the sheet glass by the end surface processing apparatus of this embodiment as time passes.

Fig. 5 is a diagram showing an end face processing apparatus according to another embodiment of the present invention Centered, the drawing of the moving range of the rotating whetstone, (a) is a schematic plan view showing the state of the entire end surface of the processed plate glass; (b) is a schematic plan view of the state where the processing is started from a position away from the end surface of the plate glass.

Fig. 6 is a diagram showing the end face processing device of the present invention, and is also a schematic perspective view of the state after the rotary torch has just contacted the vicinity of the corner of the end face of the plate glass.

FIG. 7 is a view showing a conventional end surface processing apparatus, (a) is a plan view showing the overall structure; (b) is an enlarged front view viewed from the direction of arrow Y in FIG. 7 (a).

Fig. 8 is a flow chart showing the sequence when the end surface processing of sheet glass is performed by a conventional end surface processing device as time passes.

Fig. 9 is an enlarged front view showing the relationship between the rotating whetstone and the plate glass in the conventional end surface processing device.

[Forms for implementing the invention]

Next, an embodiment of the invention will be described.

[End surface processing device 1]

First, the configuration of the end face processing device 1 of the present invention will be described using FIGS. 1 and 2.

In the following description, for convenience of description, the vertical direction of the end surface processing apparatus 1 will be described as the vertical direction of FIG. 2.

Also, in the first drawing, the direction of arrow A is defined as the end surface processing device 1 to the front.

As shown in FIG. 1, the end surface processing device 1 in this embodiment is used as a plate by the outer peripheral surface of a rotating whetstone 20 that can be attached to and detached from the rotating means 21 (see FIG. 2) described later. The end surface of the sheet glass W is subjected to processing such as polishing.

The end surface processing device 1 is mainly composed of an adsorption platform 10, a rotating whetstone 20, a groove forming mechanism 30, and the like.

Here, in the end surface processing apparatus 1, on each of the left and right sides of the adsorption platform 10, as described above, a plurality of rotating whetstones 20, 20..., and A plurality of groove forming mechanism portions 30, 30, ... respectively arranged in the vicinity of these rotating whetstones 20, 20... In addition, the plurality of rotating whetstones 20, 20... are made of the same structure with each other, and similarly, the plurality of groove forming mechanism portions 3030 are made of the same structure with each other.

Therefore, in the following description, the main focus is on: a pair of rotating whetstones 20 and a groove forming mechanism portion 30 provided on one side of the adsorption platform 10 (for example, on the right side of the present embodiment) will be described, and the other The description of the plurality of rotating whetstones 20, 20... and the groove forming mechanism portions 30, 30... is omitted.

In addition, the groove forming mechanism portion 30 may be provided corresponding to a part of the plurality of rotating whetstones 20, 20,... For example, the groove forming mechanism portion 30 may be provided by using the rotating grinding stone 120X shown in FIG. 7 as the conventional rotating stone 120 and the rotating grinding stone 120Y for fine grinding as the rotating stone 20 of the present invention.

The suction table 10 is for holding the rectangular plate-shaped plate glass W firmly in a horizontal state.

The suction platform 10 is formed in a rectangular shape in plan view, and there are countless suction holes penetrating through the upper surface.

In addition, on the upper surface of the adsorption platform 10 formed in this way, the plate glass W extends horizontally and in the front-rear direction, and the side edges on the left and right sides thereof are separated from the outside of the adsorption platform 10 by The exposed posture is placed and sucked through the innumerable suction holes, and is firmly held.

Next, the rotating whetstone 20 will be described.

The rotating whetstone 20 is an end face processor who applies chamfering or grinding to the end face of the sheet glass W.

The rotating whetstone 20 is composed of a disc-shaped metal base 20a that serves as a base, and a whetstone layer 20b that is fixed in conformity with the outer peripheral surface of the metal base 20a.

In addition, for the unused rotating whetstone 20, the annular groove portion 20c has not been formed on the outer peripheral surface. In the manner described below, the annular groove portion 20c is formed by the groove when the end surface processing of the sheet glass W is performed. The groove forming mechanism portion 30 is formed on the outer peripheral surface of the rotating whetstone 20.

The metal base 20a is made of, for example, aluminum, steel, cemented carbide, molybdenum, molybdenum alloy, cermet, titanium, or ceramics, and is formed by a disc-shaped member.

In addition, as the material of steel, for example, high-carbon tool steel, alloy tool steel, or high-speed steel can be used.

On the other hand, the grit layer 20b is fixedly bonded to the outer peripheral surface of the metal base 20a via an adhesive layer (not shown) or the like.

In addition, the grit layer 20b is produced by sintering a mixture composed of a bonding material and a plurality of grit particles.

Here, as the bonding material, a resin adhesive containing a thermosetting resin as a main component can be used, and as the grit, diamond particles, alumina particles, silicon carbide particles, cubic boron nitride particles can be used , Metal oxide particles, metal carbide particles, or metal nitride particles.

In addition, the ratio of the binding material to the whet particles is suitably such that the binding material is 30 to 97% by volume and the whet particles are 3 to 70% by volume.

The grit layer 20b is formed in a ring shape along the outer peripheral surface of the metal base 20a so that a part of the grit is exposed from the outer surface of the grit layer 20b.

In addition, the particle size of the grits can be selected according to the amount of grinding or the required level of fine surface roughness, for example, it is appropriately within the range of #100~3000, preferably #600~1000 Just decide.

As shown in FIG. 2, the rotating whetstone 20 formed in this way, for example, with respect to the rotating means 21 constituted by a drive motor or the like, the axial direction is the thickness direction of the plate glass W, that is, the up-down direction, The rotation means 21 is detachably fixed, and is driven to rotate around the axis by the rotation means 21.

Rotating whetstones 20, 20... composed of the above composition, One end face processing device 1 is provided with a plurality of (in FIG. 2, only one is shown in order to enlarge its front view), and is arranged in a row along the front and rear direction on both sides of the suction platform 10 in the left and right direction .

In addition, the plurality of rotating whetstones 20, 20... Located on the left and right sides of the suction platform 10 are configured to be integrally movable relative to the suction platform 10 in the front-rear direction.

In addition, the rotating whetstones 20, 20... arranged in a row on each of the left and right sides of the adsorption platform 10 are capable of moving in the approach and departure directions relative to the adsorption platform 10 (in this embodiment, the left and right directions ).

Next, the groove forming mechanism 30 will be described.

The groove forming mechanism portion 30 is provided on the outer peripheral surface of the mounted rotating whetstone 20 at a position corresponding to the end surface of the plate glass W, and is configured to form an annular groove portion 20c along the circumferential direction The groove forming means is provided separately for each rotating whetstone 20.

The groove forming mechanism portion 30, as shown in FIG. 1, has a swing arm 31 extending in the horizontal direction (the direction along the plate surface of the plate glass W, for example, the front-rear direction in this embodiment), in In the central portion of the swing arm 31 in the extending direction, the swing shaft 32 with the axial center direction as the up-down direction is inserted through the sandwich bearing member 33.

In addition, at one end portion (for example, the front end portion in the present embodiment) of the swing arm 31 in the extending direction, a blade portion 34 made of a superhard material that can be attached and detached is fixedly provided.

Moreover, by rotating the arm 31, the rotating shaft 32 is used as a center The rotation is performed so that the blade portion 34 is configured to be accessible to and away from the outer peripheral surface of the rotating whetstone 20.

Here, at the other end portion of the extending direction of the swing arm 31 (for example, the rear end portion in this embodiment), a spring-pulling means 35 composed of a tension spring or the like is provided, and the swing arm 31, The elastic pulling means 35 maintains the state in which the blade portion 34 is elastically pulled toward the outer peripheral surface of the rotating whetstone 20 at any time.

In addition, an actuator 36 composed of, for example, an air cylinder or the like is provided near the elastic pulling means 35, and the telescopic rod 36a of the actuator 36 presses the other end of the swing arm 31 to rotate The boom 31 rotates and moves the blade portion 34 from the outer peripheral surface of the rotating whetstone 20 in the separation direction.

With the groove forming mechanism portion 30 composed of such a structure, the horizontal position of the blade portion 34 can be abutted from the outer peripheral surface of the rotating whetstone 20 at the abutting position of the outer peripheral surface of the rotating whetstone 20 To switch between.

That is, the swing arm 31, the swing shaft 32, the bearing member 33, the elastic pulling means 35, and the actuator 36 are configured to be able to switch the blade portion 34 between the contact position and the spaced position means.

Also, in the groove forming mechanism portion 30, the swing arm 31 is rotated by the elastic pulling force of the elastic pulling means 35, and the blade portion 34 is brought into contact with the outer peripheral surface of the rotating whetstone 20 in the rotational driving state, and An annular groove portion 20c can be formed on this outer peripheral surface.

In addition, the groove forming mechanism portion 30 is configured to move integrally with the rotating whetstone 20.

Also, as shown in FIG. 2, in this embodiment, the vertical position of the blade portion 34 has been adjusted in advance to match the vertical position of the end surface of the plate glass W placed on the suction table 10, so the groove The vertical position of the groove portion 20c formed by the groove forming mechanism portion 30 can be kept consistent with the vertical position of the end surface of the plate glass W.

In other words, the groove forming mechanism portion 30 is configured such that the blade portion 34 is positioned at a position corresponding to the end surface of the plate glass W (for example, in the present embodiment, the position is aligned in the vertical direction, or It is the position facing the end of the plate glass), so that the outer circumferential surface of the rotating whetstone 20 can be formed with an annular groove portion 20b.

Thereby, in the end surface processing apparatus 1 in this embodiment, for example, whenever the rotating grindstone 20 is to be exchanged, it is no longer necessary to perform the vertical position of the rotary grindstone 20 and the vertical position of the plate glass W Consistent adjustment work.

As described above, in the end surface processing apparatus 1 of this embodiment, after the rotating whetstone 20 in the state where the groove portion 20c is not formed is attached to the rotating means 21, the groove forming mechanism portion 30 is used to rotate The outer peripheral surface of the whetstone 20 is formed with an annular groove portion 20c along the circumferential direction.

Therefore, there is no need for adjustment work after attaching the rotating whetstone 20 to the rotating means 21 as described above. Therefore, there is no need to spend time on the replacement work of the rotating whetstone, and no reduction in production efficiency is incurred.

[End surface processing method]

Next, the end surface processing method when the end surface processing of the sheet glass W is performed by the end surface processing apparatus 1 in this embodiment will be described using FIGS. 2 to 4.

In the following description, for convenience, the direction of arrow A in FIG. 3 is defined as the front of the end surface processing device 1.

First, at the beginning, as shown in FIG. 3, in the end surface processing apparatus 1 that has stopped the automatic operation, the rotating means 21 (see FIG. 2) and the groove forming mechanism section 30 for rotationally driving the rotating grindstone 20, Are in the initial state.

Specifically, in the initial state, the rotation means 21 and the groove forming mechanism portion 30 are located at a predetermined reference position Sp1 (for example, in FIG. 3, they are behind the suction stage 10 and face to the right Leaving position).

At this time, the rotation means 21 is stopped, the groove forming mechanism portion 30, and the telescopic rod 36a of the actuator 36 thereof is extended, so that the blade portion 34 is in a state of being in a spaced position. Moreover, the rotating grindstone 20 has not yet been installed in the rotating means 21.

In the end surface processing apparatus 1 constituted in such a state, as shown in FIG. 4, the plate glass W is placed on the upper surface of the suction platform 10 in a predetermined placement posture, and then the groove forming mechanism section 30 The vertical position of the blade portion 34 is adjusted to match the vertical position of the sheet glass W (step S101).

When the adjustment of the blade 34 is completed, the unused rotation The whetstone 20 is attached to the rotation means 21 (step S102).

Then, when the installation of the rotary whetstone 20 is completed, the automatic operation of the end surface processing apparatus 1 is started (step S103).

When the end surface processing apparatus 1 starts the automatic operation, the first reset operation of the rotary whetstone 20 is performed (step S104).

In the first reset operation, the rotary whetstone 20 is moved to the vicinity of the end surface processing start position of the sheet glass W, and an annular groove portion 20c is formed on the outer peripheral surface of the rotary whetstone 20.

In the first reset operation in step S104, first, the rotational driving of the rotary whetstone 20 driven by the rotary means 21 is started, and by retracting the telescopic rod 36a of the actuator 36 located in the groove forming mechanism section 30 Then, the blade 34 is moved to the abutment position, and the blade 34 is abutted on the outer peripheral surface of the rotary whetstone 20 (step S105).

Then, while keeping the blade portion 34 in contact with the outer peripheral surface of the rotating whetstone 20 that is rotationally driven, the moving whetstone 20 starts to move (step S106).

As the moving direction of the rotating whetstone 20, the rotating whetstone 20 moves forward from the reference position Sp1 relative to the adsorption platform 10, and stops at a predetermined first stop position Sp2 (near the starting position of processing of the end face of the sheet glass W ( For example, in FIG. 3, the suction platform 10 is positioned forward and away to the right).

When the rotating whetstone 20 reaches the first stop position Sp2 and stops, the telescopic rod 36a of the actuator 36 in the groove forming mechanism portion 30 is extended to move the blade portion 34 away from the outer peripheral surface of the rotating whetstone 20 (step S107) .

In this way, in the first reset operation in step S104, since the blade portion 34 abuts on the outer peripheral surface of the rotating whetstone 20, the rotating whetstone 20 after starting from the reference position Sp1 reaches the first stop position Sp2, The annular groove portion 20c is formed on the outer peripheral surface of the rotating whetstone 20 by the blade portion 34. In the present embodiment, the groove portion 20c initially formed on the rotating whetstone 20 is formed on the upper end portion of the rotating whetstone 20.

In this way, in the first reset operation of step S104, a groove forming process of forming an annular groove portion 20c on the outer peripheral surface of the rotating whetstone 20 is performed.

Moreover, in this embodiment, although the blade portion 34 is brought into contact with the outer peripheral surface of the rotary whetstone 20, the rotary whetstone 20 starts to move away from the reference position Sp1, and the rotary whetstone 20 reaches the first stop position After the stop of Sp2, the blade portion 34 is separated from the outer peripheral surface of the rotating whetstone 20. However, the rotary whetstone 20 may start to move away from the reference position Sp1 before the blade portion 34 is brought into contact with the outer peripheral surface of the rotary whetstone 20 or before the rotary whetstone 20 reaches the first stop position Sp2. The portion 34 may be separated from the outer peripheral surface of the rotating whetstone 20.

When the groove part 20c is formed in the rotating whetstone 20, the end surface processing apparatus 1 performs a grinding operation (step S108).

When the grinding operation starts, the whetstone 20 rotates and moves along with the groove forming mechanism 30 toward the suction table 10 to reach a predetermined processing start position Sp3 (for example, in FIG. 3, relative to the suction table 10 is the front, and the position approaching to the right) stops.

That is, the rotating whetstone 20 is moved in advance when the grinding operation starts It moves to the vicinity of one end side of the end surface of the sheet glass W (that is, the front end side which becomes the starting position when the end surface processing of the sheet glass W is processed as described later) (processing start position Sp3).

Then, as shown in FIG. 3, the whetstone 20 is rotated while being driven to move backward from the processing start position Sp3 opposite to the suction table 10, and then reaches the predetermined second stop position Sp4 (for example, at the In FIG. 3, the suction platform 10 is positioned behind and close to the right) and stops.

While the rotary whetstone 20 being rotationally driven moves from the processing start position Sp3 to the second stop position Sp4, the groove portion 20c of the rotary whetstone 20 is from each end surface of the plate glass W (for example, in FIG. 3, the The front end side to the rear end side of the right end surface) abuts over the entire range to perform the end surface processing of the sheet glass W.

When the end surface processing of the sheet glass W is completed, the rotating grindstone 20 system moves from the second stop position Sp4 in the direction away from the suction platform 10, and reaches the reference position Sp1 again to stop.

When the rotating whetstone 20 is stopped at the reference position Sp1, the annular groove portion 20c (the end face processing of the previous glass plate W is performed by the end surface processing of the plate glass W) is executed by the determination means provided in the end surface processing apparatus 1 It is judged whether the groove part 20c) has reached the limited service life (step S109).

Also, at this time, in the adsorption platform 10, the plate glass W subjected to the end face processing is carried out through the above step S108, and on the other hand, the new unprocessed plate glass W is moved by a predetermined placement posture Being placed on the adsorption The upper surface of the platform 10.

Furthermore, when it is judged that the groove portion 20c has not reached the defined service life, the second reset operation of the rotary whetstone 20 is performed (step S110).

In the second reset operation, the annular groove portion 20c is not formed on the outer peripheral surface of the rotary whetstone 20, but only the rotary whetstone 20 is moved to the vicinity of the end surface processing start position of the plate glass W.

In the second reset operation in step S110, with the blade portion 34 away from the outer peripheral surface of the rotating whetstone 20, the rotating whetstone 20 moves forward from the reference position Sp1 relative to the suction stage 10, and stops at the first stop Position Sp2 stops.

In the second reset operation, since the blade portion 34 is separated from the outer peripheral surface of the rotating whetstone 20, the groove portion 20c is not formed on the outer peripheral surface of the rotating whetstone 20.

When the rotary whetstone 20 stops at the first stop position Sp2, the grinding operation is restarted (step S108), and the rotary whetstone 20 moves to the processing start position Sp3, and then moves from the processing start position Sp3 to the second stop position Sp4 to execute a new The end surface of the unprocessed plate glass W placed is processed.

After that, in step S109, it is determined that the groove portion 20c has not reached the limited service life, and the second reset operation (step S110) and the polishing operation (step S108) are repeatedly performed.

On the other hand, in step S109, when it is determined that the groove portion 20c has reached the limited service life, the Step again, execute: judging whether the rotating whetstone 20 itself has reached the limited service life (step S111).

In addition, in step S109, it may be determined that after the processing of the predetermined number of pieces of plate glass W is completed, it is determined that the service life limited to the groove portion 20c has been reached.

In addition, when it is determined that the rotating whetstone 20 itself has not reached the limited service life, the rotating whetstone 20 executes a step change (more specifically, the groove part 20c that has reached the service life is changed to form a new groove part Operation of 20c) (step S112).

Specifically, as shown in FIG. 2, the rotating whetstone 20 is moved together with the rotating means 21 along the rotation axis direction (in this embodiment, the up and down direction) in a predetermined direction by a predetermined pitch amount (in this embodiment, it is Above) and stop.

As a result, the end surface of the sheet glass W is opposed to the portion of the outer peripheral surface of the rotating whetstone 20 where the annular groove portion 20c has not been formed.

In this manner, the step change of the rotating whetstone 20 means that the end face of the plate glass W is switched from the state facing the groove portion 20c that has reached the end of its service life to: The portion where the annular groove portion 20c is formed is opposed.

Then, as shown in FIG. 4, the end surface processing apparatus 1 that has completed the step change of the rotating whetstone 20 repeats the operations after the first reset operation (step S104) to form a new groove portion on the outer peripheral surface of the rotating whetstone 20 After 20c, the end surface processing of the sheet glass W is performed.

In this case, the trench formed after the step change in step S112 The portion 20c is formed below the groove portion 20c formed the previous time.

In addition, in step S111, when it is determined that the rotary whetstone 20 itself has reached the limited service life, the automatic operation of the end surface processing apparatus 1 is stopped (step S113).

With this, the end surface processing of the sheet glass W by the end surface processing device 1 is ended.

In addition, when the end surface processing apparatus 1 performs the end surface processing of the sheet glass W, the steps S102 and the subsequent steps are sequentially executed. That is, after replacing the rotating whetstone 20 that has reached the end of its service life with a new rotating whetstone 20 that has not yet formed the groove portion 20c, the automatic operation of the end face processing device 1 is started again.

In this manner, in the end surface processing apparatus 1 of the present embodiment, the processing process (step S108) of performing the end surface processing (specifically, grinding) of the plate glass W by the rotating whetstone 20 (step S108) and Preparing a preparation process (eg, performing steps S104, S110, etc. of the first and second reset operations) of the end surface processing (grinding processing) of the subsequent plate glass W (that is, the plate glass W to be performed next to the end surface processing), The formation of the groove portion 20c by the groove forming mechanism portion 30 on the outer peripheral surface of the rotating whetstone 20 is performed during the implementation of the above preparation process (for example, in the present embodiment, when step S104 is performed).

Therefore, according to the end surface processing apparatus 1 of the present embodiment, it is not necessary to separately set a new step for forming an annular groove portion 20c on the outer peripheral surface of the rotating whetstone 20, and it does not cause production efficiency due to time loss. reduce.

In addition, in the end surface processing apparatus 1 of the present embodiment, the annular groove portion 20c is formed in advance on the outer peripheral surface of the rotary whetstone 20 through a series of steps S105, S106, and S107 during the first reset operation in step S104. After that, the end surface processing of the sheet glass W is performed again, so that the quality of the processed sheet glass W can be improved.

However, according to the aforementioned conventional end surface processing apparatus 101 (please refer to FIG. 7), the end surface processing method when performing the end surface processing of the sheet glass W is different from the end surface processing method performed by the end surface processing apparatus 1 of the present embodiment. The steps are almost the same, but on the other hand, the steps before starting the automatic operation are very different.

Hereinafter, the end surface processing method when the end surface processing of the sheet glass W is performed by the conventional end surface processing apparatus 101 using FIG. 8 and FIG. 9 will be described.

In the following description, for convenience of description, the vertical direction of FIG. 9 will be described as the vertical direction of the end surface processing device 101.

First, as shown in FIG. 8, outside the device of the end surface processing device 101, a plurality of annular grooves 120a, 120a, ... are formed on the outer peripheral surface of the rotating whetstone 120 in advance (step S201).

On the other hand, on the upper surface of the suction platform (not shown), the plate glass W is placed in a predetermined placement posture.

Then, the rotating whetstone 120 in which a plurality of ring-shaped grooves 120a, 120a, etc. have been formed is installed after the rotating means 121 of the end surface processing apparatus 101 (step S202), so that the end face of the plate glass W faces The vertical position of the annular groove portion 120a is adjusted to match the vertical position of the sheet glass W so as to adjust the vertical position of the rotating whetstone 120 (step S203).

After the installation of the rotary whetstone 120 is completed, when the automatic operation of the end face machining device 101 is started (step S204), the rotary whetstone 120 performs a reset operation with the groove forming mechanism (not shown) (step S205).

In the reset operation, the rotating whetstone 120 is moved from the reference position Sp1 to the first stop position Sp2 and then stopped.

Then, a grinding operation is performed (step S206), and the rotating grindstone 120 starts to move from the first stop position Sp2 and stops after reaching the processing start position Sp3.

As soon as the processing start position Sp3 is stopped, the whetstone 120 is rotated, and the rotation means 121 starts to rotate and drive.

Specifically, the rotating whetstone 120 is similar to step S108 in the end surface processing apparatus 1 of the present embodiment described above, while being rotationally driven, while being moved from the processing start position Sp3 to the second stop position Sp4 and then stopped.

Thereby, the rotating whetstone 120 spans the entire range from the front end to the rear end of each end surface of the plate glass W, and is driven while rotating while continuing to contact and move through the annular groove portion 120a to implement the plate glass W End face processing.

The rotating whetstone 120 that has reached the second stop position Sp4 moves to the reference position Sp1 again and stops.

When the whetstone 120 rotates and stops at the reference position Sp1 again, by means of determination, a determination is made as to whether the annular groove portion 120a corresponding to the upper and lower positions of the plate glass W has reached the limited service life (step S207) .

Furthermore, when it is judged that the annular groove portion 120a has not reached the limited service life, the whetstone 120 is rotated, and the operations after step S205 are repeated again.

On the other hand, when it is judged that the above-mentioned annular groove portion 120a has reached the limited service life, it is further performed by the judging means: whether the rotating whetstone 120 itself has reached the limited service life (step S208 ).

Then, when it is judged that the rotating whetstone 120 itself has not reached the limited service life, the rotating whetstone 120 executes a step change (more specifically, it replaces the new groove part 120a with the groove part 120a which has reached the service life It becomes a usable operation) (step S209).

Specifically, as shown in FIG. 9, the rotating whetstone 120, together with the rotating means 121, is raised in the vertical direction by a predetermined distance and then stopped.

As a result, the unused annular groove portion 120a is positioned on the outer peripheral surface of the rotating whetstone 120 so as to coincide with the vertical position of the end surface of the plate glass W.

Then, as shown in FIG. 8, the rotating whetstone 120 after the level change is completed, and the operations after step S202 described above are repeated again.

On the other hand, when it is judged that the rotating whetstone 120 itself has arrived When the limited service life is reached (that is, when it is determined that there is no unused annular groove portion 120a), the automatic operation of the end surface processing apparatus 101 is stopped (step S210).

With this, the end surface processing of the sheet glass W by the end surface processing device 101 is ended.

In addition, when the end surface processing apparatus 1 performs the end surface processing of the sheet glass W, the steps after step S201 are sequentially executed.

As described above, in the conventional end surface processing apparatus 101, when the rotating whetstone 120 itself has reached the limited service life, the replacement of the unused rotating whetstone 120 is performed every time in the aforementioned step S202 During work, it is necessary to adjust the up and down position of the rotating stone 120 in step S203.

On the other hand, in the end surface processing apparatus 1 of the present embodiment, as shown in FIG. 4, in step S101, as long as the upper and lower positions of the blade portion 34 are adjusted to match the upper and lower positions of the plate glass W once Since it is not necessary to adjust the upper and lower positions of the rotating whetstone 20 even if the rotating whetstone 20 is replaced many times, there is no time loss and the production efficiency is reduced.

[Verification experiment]

Next, in order to judge the effectiveness of the groove forming mechanism portion 30 of the end surface processing apparatus 1 of the present embodiment, the inventors conducted a verification experiment, which will be described below using FIG. 1.

At first, the inventors prepared the outer diameter A 150[mm] disc-shaped rotating whetstone 20 is used as a sample of an embodiment of the present invention, and the rotating whetstone 20 is in an unused state (an annular groove 20c has not been formed on the outer peripheral surface (please refer to The state of FIG. 2) is attached to the end surface processing device 1.

In addition, the inventors of the present invention set the distance (the dimension a in FIG. 1) between the rotating shaft 32 and the elastic pulling means 35 to the rotating arm 31 of the groove forming mechanism 30, and the rotating shaft 32 and The distance between the blade portions 34 (dimension b in the first drawing) is adjusted to 30 [mm].

Furthermore, the inventors of the present invention, while rotating and driving the rotating whetstone 20, made the blade portion 34 abut against the outer peripheral surface of the rotating whetstone 20 for a predetermined time.

As the conditions at this time, the number of rotations of the rotating whetstone 20 is set to 3820 [rpm], the pressing force of the blade 34 against the outer peripheral surface of the rotating whetstone 20 is set to 3 to 4 [N], and the blade The contact time of the portion 34 is set to 3 [s], and an annular groove portion 20c is formed on the outer peripheral surface of the rotating whetstone 20.

As a result of the above, the present inventors confirmed that an annular groove portion 20c formed with a groove depth of 0.2 to 0.3 [mm] is stably formed on the outer peripheral surface of the rotating whetstone 20.

Furthermore, the present inventors used this rotating whetstone 20 to perform the processing of the end surface of the plate glass W composed of a thickness of 0.3 to 0.5 [mm], and confirmed that after the groove portion 20c is formed, it is not necessary to perform It has been confirmed that fine adjustment and the like can suppress the occurrence of chattering in the vicinity of the corners, and at the same time span the entire range from the front end to the rear end of each end surface, the end surface processing of the sheet glass W can be performed.

[End surface processing device 201 (another embodiment)]

Next, the configuration of the end surface processing device 201 of another embodiment will be described using FIG. 5.

In the following description, for convenience of description, the direction of arrow A in FIG. 5 is described as being in front of the end surface processing device 201.

In the end surface processing device 201 of another embodiment, after the rotating whetstone 220 in the state where the groove portion is not formed is attached to the rotating means (not shown), a ring along the circumferential direction is formed on the outer peripheral surface of the rotating whetstone 220 This groove-shaped groove (not shown) is common to the aforementioned end surface processing device 1, but it does not have the groove-forming mechanism 30 (please refer to FIG. 1) for forming the ring shape. The method of the groove portion is different from the end surface processing device 1 in this point.

That is, in the end surface processing device 201, the structure is such that an annular groove portion is formed on the outer peripheral surface of the rotary whetstone 220 by processing the end surface of the plate glass W.

Specifically, in the end surface processing apparatus 201, the rotating whetstone 220 is directly processed on the end surface of the plate glass W without forming an annular groove portion, and the end surface of the plate glass W is polished On the outer peripheral surface of the rotating whetstone 220, an annular groove portion is formed.

Moreover, as the end surface of the plate glass W is polished by the rotating whetstone 220, the depth of the ring-shaped groove portion increases further, and when the grinding ability of the rotating whetstone 220 decreases, it is considered that the ring-shaped groove portion has reached The service life, the rotating whetstone 220 rises by a predetermined distance.

As a result, the outer peripheral surface of the rotating whetstone 220 (more specifically, the portion located on the outer peripheral surface of the rotating whetstone 220 that is in contact with the end surface of the sheet glass W) is again not formed with an annular groove status.

Then, by grinding the end surface of the plate glass W, a new ring-shaped groove portion is formed again on the outer peripheral surface of the rotating whetstone 220.

However, as shown in FIG. 6, for example, when the end surface processing of the sheet glass W is performed by the rotating whetstone 220 in which the annular groove portion has not been formed, immediately after the end surface processing of the sheet glass W starts, There is a possibility that the corners of the plate glass W come into contact with the outer peripheral surface of the rotating whetstone 220 during the rotation drive, and are bounced away, which may cause chattering.

As a result, in addition to making it difficult to evenly polish the vicinity of the corners of the sheet glass W, there is a possibility that the rotating whetstone 220 itself may be damaged by the corners of the sheet glass W, and the quality of the sheet glass W may be reduced.

Based on such a problem, the end face processing device 201 in this embodiment, as shown in FIG. 5(b), is the first sheet glass immediately after the replacement operation or the step change of the rotating whetstone 220 is completed. W, used as a simulated plate glass W, only when the end surface processing of the simulated plate glass W is performed, there is a distance from the corner of the front side (direction of arrow A) of the plate glass W to the rear At the size of Z, the end face processing is started toward the rear. As a result, a new annular groove portion (not shown) is formed on the outer peripheral surface of the rotating whetstone 220. The aforementioned distance Z is preferably 1-100 mm, and preferably 30-40 mm.

Moreover, as shown in FIG. 5(a), for the second and subsequent sheet glass W, it is not necessary to avoid the corners on the front side, but the whole is performed on the end surface End face processing is used as its control method.

In this manner, according to the end surface processing except for both end portions of the end surface of the sheet glass W (for example, the front end portion in this embodiment), an annular groove is formed on the outer peripheral surface of the rotating whetstone 220 The end surface processing device 201 that performs operation control by using the groove portion omits the groove forming mechanism portion 30, so that it is possible to reduce the equipment cost, and for example, the replacement work on the rotary whetstone 220 or the change of the stage is completed The second and subsequent sheet glass W can be processed on the end face of the sheet glass W while suppressing the occurrence of chattering near the corners of the sheet glass W by the newly formed annular groove portion of the rotating whetstone 220. Therefore, the quality of the plate glass W after the processing can be improved.

In addition, in the end surface processing apparatus 1, since the groove portion 20c is formed by the groove forming mechanism portion 30 in advance, the end surface processing of the plate glass W can be performed while suppressing the occurrence of chattering near the corners of the plate glass W Therefore, the quality of the plate glass W after the processing can be improved.

[Industry availability]

The end face processing device of a plate-like object of the present invention can be used as, for example, the outer face of a revolving whetstone that can be attached and detached, for the end face of a thin plate glass used in a flat screen or a smart phone, etc. The technique of grinding.

1‧‧‧Face processing device

10‧‧‧Adsorption platform

20‧‧‧revolving whetstone

20a‧‧‧Metal base

20b‧‧‧grain layer

30‧‧‧Groove forming mechanism (groove forming means)

31‧‧‧Rotating arm

32‧‧‧Rotating shaft

33‧‧‧Bearing components

34‧‧‧Blade

35‧‧‧Bounce means

36‧‧‧Actuator

36a‧‧‧Telescopic pole

a‧‧‧The distance between the rotating shaft 32 and the elastic pulling means 35

b‧‧‧The distance between the rotating shaft 32 and the blade 34

A‧‧‧Front of the end face processing device 1

B‧‧‧ Rear of the end face processing device 1

W‧‧‧plate glass (plate-like)

Claims (5)

An end surface processing device for a plate-like object is an end surface processing device for processing the end surface of a plate-like object by being attached to and detached from the outer peripheral surface of a rotating whetstone of a rotating means, characterized in that the above-mentioned end surface processing device is provided with a groove A groove forming means for forming an annular groove portion along the circumferential direction on the outer peripheral surface of the rotating grindstone, and the end surface processing device is to alternately perform a processing process and a preparation process, the processing process is performed by the above The rotating whetstone performs processing on the end face of the plate-like object, and the preparation process is preparation for subsequent processing of the end face of the plate-like object. The preparation process is to move the rotating whetstone that has just been subjected to the processing process to the end face. In the process of the starting position of the processing, after the rotary whetstone in a state where the groove portion has not been formed is attached to the rotary means, the groove forming means is applied to the outer periphery of the rotary whetstone during the preparation process is in progress The surface performs the formation of the above groove portion. The end surface processing device for a plate-like object as described in item 1 of the patent application range, wherein the groove forming means is adjusted so as to match the vertical position of the end surface of the plate-like object. The device for processing the end face of a plate-like object as described in item 1 or 2 of the patent application, wherein, The rotating whetstone is provided to be movable along the direction of the rotation axis; the end face processing device executes the step change when it is judged that the groove portion reaches the service life. An end surface processing device for a plate-like object as described in item 3 of the patent application scope, wherein after performing the above-mentioned step change, the groove forming means is allowed to perform the formation of the groove portion on the outer peripheral surface of the rotating whetstone . An end surface processing device for a plate-like object as described in item 1 or 2 of the patent application range, wherein the groove forming means includes a blade portion and a switching means, the blade portion is used to The position corresponding to the end surface, that is, the annular groove portion is formed on the outer peripheral surface of the rotating whetstone, and the switching means is capable of contacting the blade portion with the outer peripheral surface of the rotating whetstone The contact position is separated from the spaced position where the blade portion is separated from the outer peripheral surface of the rotating grindstone.

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