JP2009263200A - Device and method for scribing brittle material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and a method for scribing a brittle material, in which the brittle material is transported continuously and defects such as cracks and missing parts are not generated at edges of the brittle material. <P>SOLUTION: The device comprises a cutter wheel which moves along a planned line for scribing on one side surface of the brittle material while being pressed by the brittle material; and a moving roller supporting the opposite side of the contact surface of the brittle material to the cutter wheel. The brittle material continuously moves between the moving roller and the cutter wheel and a scribing line is formed on one surface of the brittle material. When viewed from the advancing direction, an energizing roller which energizes in the direction the brittle material is to be separated is disposed at a specific position in front of the cutter wheel. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a brittle material scribing apparatus and a brittle material scribing method that can be continuously moved to form a scribe line on the surface without causing cracks, chips or the like at the end of a brittle material such as a glass plate. .

  When scribing a plate-like brittle material such as a glass plate, the cutter wheel is moved over the surface of the brittle material while loading the cutter wheel with a load corresponding to various conditions such as the material and thickness of the brittle material. Form. After forming the scribe line, the brittle material can be divided along the scribe line by applying a predetermined load to the brittle material.

  FIG. 1 is a front view showing a schematic configuration of a conventional scribing apparatus. As shown in FIG. 1, the conventional scribing device is rotatable on a substantially horizontal plane, and includes a table 11 on which a glass plate G is placed. The table 11 is arranged in the X direction (left-right direction) and the Y direction (on the paper surface). A guide bar 14 and a pair of guide rails 12 are provided so as to be movably supported in an orthogonal direction.

The cutter wheel 29 that forms a scribe line is attached to a scribe head 20 that is slidably attached to a slide unit 15 that is slidably attached to a guide bar 14, and the glass plate G is formed into a scribe line. After moving to the position, the scribe head 20 is moved in the X direction, whereby a scribe line can be formed in a direction substantially orthogonal to the moving direction of the glass plate G (see Patent Documents 1 and 2).
JP 2004-189556 A JP-A-7-138039

  However, in the scribing apparatus as disclosed in Patent Documents 1 and 2, after the brittle material has moved below the scribe head, the brittle material is fixed to the table 11 by the vacuum suction means, and then the scribe line is formed. Execute. Therefore, the brittle material has to be moved and stopped at a predetermined position, and when the formation of the scribe line is completed, it is necessary to perform an intermittent movement such as moving to the next position and stopping.

  That is, Patent Document 1 discloses a technique for adjusting the amount of biting of the cutter wheel by adjusting the lowering degree of the cutter wheel itself, but the glass plate is fixed on the table at the time of scribing, and the glass plate is continuously moved. The scribe line is not formed while being moved to. Patent Document 2 discloses a technique for moving the scribe tip while generating a bending moment in the brittle plate by pressing rollers that press both sides of the brittle plate, but the brittle plate is also stopped at the time of scribing, The scribe line is not formed while continuously moving the brittle plate.

  Furthermore, when the brittle material is continuously moved, it is common to use a moving roller or the like because the frictional resistance is large if the upper surface of the table or the like is moved. However, when the brittle material is moved by being placed on the moving roller, the edge of the brittle material is likely to come into contact with a part near the scribe head, and the edge of the brittle material has a defect such as a crack or a chip. May occur.

  The present invention has been made in view of such circumstances, and includes a brittle material scribing apparatus and a brittle material scribing method in which defects such as cracks and chips do not occur at the end of the brittle material while continuously moving the brittle material. The purpose is to provide.

  In order to achieve the above object, a brittle material scribing apparatus according to the first invention includes a cutter wheel that moves while being pressed by a brittle material along a scribe line on one side of the brittle material, and the cutter of the brittle material. A moving roller that supports a surface on the opposite side of the surface that contacts the wheel, and the brittle material is scribed on one surface of the brittle material by continuously moving between the moving roller and the cutter wheel. A brittle material scribing device for forming a line, the biasing roller for biasing the brittle material in a direction away from the cutter wheel at a predetermined position in front of the cutter wheel when viewed from the traveling direction of the brittle material A brittle material scribing device comprising:

  Further, the brittle material scribing device according to the second invention is characterized in that, in the first invention, the biasing roller is supported by a biasing member that biases the brittle material in a direction away from the cutter wheel. To do.

  The brittle material scribing device according to a third aspect of the invention is the first or second aspect of the invention, wherein the central axis of the cutter wheel in the direction of pressing the brittle material is the center of the moving roller in the direction of supporting the brittle material. It arrange | positions so that it may become ahead from a shaft seeing from the advancing direction of the said brittle material.

  Next, in order to achieve the above object, the brittle material scribing method according to the fourth invention includes a cutter wheel that moves while being pressed by the brittle material along a scribe line on one side of the brittle material, and the brittle material. A moving roller that supports a surface opposite to the surface in contact with the cutter wheel, and the brittle material continuously moves between the moving roller and the cutter wheel so that one of the brittle materials is A brittle material scribing method for forming a scribe line on a surface, wherein the brittle material is urged by a biasing roller for biasing the brittle material at a predetermined position in front of the cutter wheel as viewed from the traveling direction of the brittle material. The material is biased in a direction away from the cutter wheel, and the brittle material is guided to the moving roller in the biased state.

  Further, in the brittle material scribing method according to the fifth invention, in the fourth invention, the central axis of the cutter wheel in the direction of pressing the brittle material is more than the central axis of the moving roller in the direction of supporting the brittle material, It arrange | positions so that it may become the front seeing from the advancing direction of the said brittle material.

  In 1st invention and 4th invention, the surface on the opposite side to the surface which contacts the cutter wheel of a brittle material is used using the cutter wheel which moves while pressing with a brittle material along the scribe plan line of one surface of a brittle material. The brittle material is continuously moved while being supported by the moving roller. When viewed from the moving direction of the brittle material, the brittle material is urged away from the cutter wheel by the urging roller at a predetermined position in front of the cutter wheel. Since the end of the brittle material that is bent by being biased is guided to the moving roller, the end of the brittle material does not contact the cutter wheel, but contacts the apex of the moving roller located near the cutter wheel. To do. By the rotation of the moving roller, the brittle material is gradually guided from the contacted position in the direction opposite to the urging direction, and becomes a position where the cutter wheel can bite when passing through the apex of the moving roller. Therefore, even when the brittle material is moved continuously without stopping, it is possible to avoid the end of the brittle material from contacting the parts near the cutter wheel. There is no risk of defects such as cracking and chipping.

  In the second invention, the urging roller is supported by a urging member that urges the brittle material away from the cutter wheel. By urging the brittle material away from the cutter wheel, the end of the brittle material can come into contact with the cutter wheel until rotation of the moving roller induces the brittle material to a position where the cutter wheel can bite And there is no possibility that defects such as cracks and chips will occur at the ends of the brittle material.

  In the third and fifth aspects of the invention, the central axis of the cutter wheel in the direction of pressing the brittle material is arranged to be forward of the central axis of the moving roller in the direction of supporting the brittle material as viewed from the traveling direction of the brittle material. To do. As a result, when the brittle material contacts the vicinity of the apex of the moving roller, the end of the brittle material passes the position of the cutter wheel, and the brittle material is guided to the position where the cutter wheel can bite by the rotation of the moving roller. There is no possibility that the edge of the brittle material will contact the cutter wheel. Therefore, there is no possibility that defects such as cracks and chips occur at the ends of the brittle material.

  With the above configuration, since the end portion of the brittle material bent by being biased is guided to the moving roller, the end portion of the brittle material does not come into contact with the cutter wheel, and the end of the moving roller located in the vicinity of the cutter wheel. Contact near the apex. By the rotation of the moving roller, the brittle material is gradually guided in the direction opposite to the urging direction from the contacted position, and the cutter wheel becomes a position where the cutter wheel can bite into the brittle material when passing through the apex of the moving roller. Therefore, even when the brittle material is moved continuously without stopping, it is possible to avoid the end of the brittle material from contacting the parts near the cutter wheel. There is no risk of defects such as cracking and chipping.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 2 is a schematic diagram showing a configuration in the vicinity of the brittle material end portion of the brittle material scribing apparatus according to the embodiment of the present invention. As shown in FIG. 2, the brittle material scribing apparatus according to the present embodiment continuously moves a plate-like brittle material, for example, a glass plate 1 in the direction of arrow 2. Such movement is performed by one or a plurality of sliding rollers 3, 3,.

  In the direction in which the glass plate 1 moves, the biasing roller 4 for biasing the pressing force, the scribe head 6 to which the cutter wheel 5 is attached, and the moving roller 7 for moving the glass plate 1 are attached in this order. Yes. The biasing roller 4 includes a biasing member 41 such as a coil spring, and biases the glass plate 1 in a direction away from the cutter wheel 5. In the present embodiment, a compression coil spring is used. In FIG. 2, the glass plate 1 is pushed down.

  FIG. 3 is a schematic diagram showing a state where the end of the glass plate 1 has moved to a position where it contacts the urging roller 4. As shown in FIG. 3, when the end portion of the glass plate 1 comes into contact with the urging roller 4, the glass plate 1 is pushed downward by the urging force of the urging roller 4. Therefore, the glass plate 1 is deformed so as to bend downward by a predetermined amount, with the position where the sliding roller 3 closest to the end of the glass plate 1 is in contact with the glass plate 1 as a fulcrum.

  FIG. 4 is a schematic diagram showing a state in which the glass plate 1 is pushed downward by the urging force of the urging roller 4. As shown in FIG. 4, the end portion of the glass plate 1 is bent downward by ΔZ from the position (dashed line portion) where the glass plate 1 moves when not biased by the biasing force of the biasing roller 4. In the present embodiment, it is sufficient that the end of the glass plate 1 bends to such an extent that it does not come into contact with the cutter wheel 5, so that the amount of bending ΔZ is about 0.2 mm.

  The glass plate 1 continues to move by the sliding rollers 3, 3,... While the end portion is bent downward, and the end portion of the glass plate 1 is in the vicinity of the apex of the moving roller 7, and moves. It contacts the moving roller 7 before the direction. FIG. 5 is a schematic view showing a state in which the glass plate 1 is in contact with the moving roller 7.

  As shown in FIG. 5, since the end of the glass plate 1 is bent downward, the end of the glass plate 1 contacts the moving roller 7 in front of the apex P instead of the apex P of the moving roller. . Since the material of the moving roller 7 is a synthetic resin material, a rubber material, or the like, even if the end portion of the glass plate 1 comes into contact, the end portion of the glass plate 1 does not have a defect such as a chip.

  Due to the rotation of the moving roller 7, the end of the glass plate 1 is returned upward against the urging force of the urging roller 4. And when the edge part of the glass plate 1 reaches | attains the vertex P of the moving roller 7, the position of the height direction of the moving roller 7 and the cutter wheel 5 is set so that the cutter wheel 5 may contact the upper surface of the glass plate 1. By adjusting, the load which produces defects, such as a crack, in the edge part of the glass plate 1 is not applied until the edge part of the glass plate 1 reaches the vertex P of a moving roller.

  FIG. 6 is a schematic diagram showing a state in which the end of the glass plate 1 has reached the apex of the moving roller 7. As shown in FIG. 6, the glass plate 1 receives the urging force from the urging roller 4, but can move continuously in the space between the moving roller 7 and the cutter wheel 5.

  FIG. 7 is a schematic diagram showing a positional relationship between the cutter wheel 5 and the moving roller 7 in the moving direction of the glass plate 1. As shown in FIG. 7, the central axis of the cutter wheel 5 is located in front of the moving direction of the glass plate 1 with respect to the central axis of the moving roller 7. The distance D between the center axis of the cutter wheel 5 and the center axis of the moving roller 7 is such that a part of the cutter wheel 5 contacts the end of the glass plate 1 until the glass plate 1 returns from the bent state. Decide not to. By doing in this way, before starting formation of a scribe line, defects, such as a crack and a chip, do not arise in the edge part of glass plate 1, and even if it is in the state where a scribe line was formed, quality is high. A glass plate 1 can be provided.

  As described above, according to the present embodiment, the end portion of the glass plate 1 that is a brittle material bent by the urging force of the urging roller 4 is positioned in the vicinity of the cutter wheel 5 without contacting the cutter wheel 5. The cutter wheel 5 is returned to a position where it can bite into the glass plate 1 by the rotation of the moving roller 7. Therefore, even if it is a case where it moves continuously, without stopping the movement of the glass plate 1, it can avoid that the edge part of the glass plate 1 contacts the components near the cutter wheel 5, and a glass plate There is no possibility that defects such as cracks and chips occur at the end of 1.

  In addition, in embodiment mentioned above, although the glass plate 1 is moved to the substantially horizontal direction, the same effect can be expected even if it moves to the substantially vertical direction. In this case, it is preferable to use a plurality of sets of V-shaped rollers that sandwich and support the glass plate 1 from both sides instead of the sliding rollers 3, 3. This is because the movement of the glass plate 1 in the vertical direction can be easily controlled.

  In addition, the brittle material is not limited to the glass plate, and any type of brittle material may be used as long as it is a fragile material that forms a scribe line when divided and then breaks with high accuracy. . In addition, it goes without saying that various modifications and replacements are possible within the scope of the present invention.

  It is a front view which shows schematic structure of the conventional scribing apparatus.   It is a schematic diagram which shows the structure of the brittle material edge part vicinity of the brittle material scribe apparatus which concerns on embodiment of this invention.   It is a schematic diagram which shows the state which moved to the position where the edge part of a glass plate contacts a biasing roller.   It is a schematic diagram which shows the state by which the glass plate was pushed down by the urging | biasing force of the urging | biasing roller.   It is a schematic diagram which shows the state which the glass plate contacted the moving roller.   It is a schematic diagram which shows the state which the edge part of the glass plate reached | attained the vertex of the moving roller.   It is a schematic diagram which shows the positional relationship in the moving direction of the glass plate of a cutter wheel and a moving roller.

Explanation of symbols

1 Glass plate (brittle material)
3 Sliding roller 4 Energizing roller 5 Cutter wheel 6 Scribe head 7 Moving roller 41 Energizing member

Claims (5)

A cutter wheel that moves while being pressed by the brittle material along a scribe line on one surface of the brittle material, and a moving roller that supports a surface of the brittle material opposite to the surface that contacts the cutter wheel. ,
A brittle material scribing device that forms a scribe line on one surface of the brittle material by continuously moving the brittle material between the moving roller and the cutter wheel,
A brittle material scribing apparatus, comprising: an urging roller that urges the brittle material in a direction away from the cutter wheel at a predetermined position in front of the cutter wheel when viewed from the traveling direction of the brittle material.   The brittle material scribing apparatus according to claim 1, wherein the biasing roller is supported by a biasing member that biases the brittle material in a direction away from the cutter wheel.   The central axis of the cutter wheel in the direction in which the brittle material is pressed is arranged so as to be in front of the central axis of the moving roller in the direction of supporting the brittle material as viewed from the traveling direction of the brittle material. The brittle material scribing device according to claim 1 or 2. Using a cutter wheel that moves while being pressed by the brittle material along a scribe line on one side of the brittle material, and a moving roller that supports the surface of the brittle material opposite to the surface in contact with the cutter wheel ,
A brittle material scribing method in which the brittle material continuously moves between the moving roller and the cutter wheel to form a scribe line on one surface of the brittle material,
When viewed from the direction of travel of the brittle material, the brittle material is biased in a direction away from the cutter wheel by a biasing roller that biases the brittle material at a predetermined position in front of the cutter wheel.
A brittle material scribing method, wherein the brittle material is guided to the moving roller in an energized state.   The central axis of the cutter wheel in the direction in which the brittle material is pressed is arranged so as to be in front of the central axis of the moving roller in the direction of supporting the brittle material as viewed from the traveling direction of the brittle material. The brittle material scribing method according to claim 4.

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