JP5323149B2 - Wheel unit - Google Patents

Description

  The present invention relates to a wheel unit including a cutter wheel for forming a scribe line on a brittle material substrate such as a glass substrate, a ceramic substrate, or a silicon substrate. More specifically, the present invention relates to a wheel unit in which a cutter pin is rotatably inserted into a holder, and a cutter wheel is rotatably attached to the cutter pin. About.

  Conventionally, in the manufacturing process of flat display panels such as liquid crystal display panels and organic electroluminescence (EL) panels, solar cells, etc., a step of dividing a brittle material substrate such as a mother glass substrate is provided. In addition, a glass plate cutting process from a glass ribbon is also provided in the glass material manufacturing process. In these cutting process or cutting process, a scribe line is formed by rolling the cutter wheel on the surface of the brittle substrate while applying a load corresponding to various conditions such as the material and thickness of the brittle substrate to the cutter wheel, By applying a predetermined force to the brittle substrate, the brittle substrate is divided along a scribe line to manufacture individual panels and glass plates.

  Here, the scribing apparatus disclosed in the following Patent Document 1 will be described with reference to FIGS. 6 is a perspective view of a scribe device disclosed in the following Patent Document 1, FIG. 7 is a diagram showing a configuration of a cutter wheel holder used in the scribe device, and FIG. It is a perspective view of a unit.

  In the scribing apparatus 100, a moving base 101 is held so as to be movable in the y-axis direction along a pair of guide rails 102a and 102b. The ball screw 103 is screwed with the moving base 101. The ball screw 103 is rotated by driving the motor 104, and moves the moving base 101 in the y-axis direction along the guide rails 102a and 102b. A motor 105 is provided on the upper surface of the movable table 101. The motor 105 rotates the table 106 on the xy plane and positions it at a predetermined angle. The brittle material substrate 107 is placed on the table 106 and held by a vacuum suction means (not shown). Two CCD cameras 108 that image the alignment marks of the brittle material substrate 107 are provided on the top of the scribe device 100.

  In the scribe device 100, a bridge 110 is installed by struts 111 a and 111 b along the x-axis direction so as to straddle the moving table 101 and the upper table 106. The scribe head 112 is movable in the x-axis direction along a guide 113 provided on the bridge 110. The motor 114 moves the scribe head 112 along the x-axis direction.

  A wheel unit 121 is attached to the scribe head 112 of the scribe device 100 via a holder joint 120. As shown in FIGS. 6 and 7, the holder 122 forming the wheel unit 121 is a substantially cylindrical member, and here, substantially square flat portions 122 a and 122 b are parallel to the central axis at one end thereof. Is provided. The wheel unit 121 has a notch 123 along the central axis between the flat portions 122a and 122b, and a pin groove 124 in a direction perpendicular to the surface of the flat portions 122a and 122b. Yes.

  The cutter wheel (also referred to as “scribing wheel”) 125 has a disk shape with a wheel diameter of about 2.5 mm and a thickness of about 0.5 mm, for example, and has a V-shaped blade with a vertical cross section along the circumferential portion. And a through-hole 126 is formed at the center. The cutter wheel 125 is rotatably held by passing the cutter pin 127 inserted into the pin groove 124 through the central through hole 126. Further, at least one end portion of the cutter pin 127 is formed in the pin groove 124 by forming a claw portion by caulking the inner peripheral side of the pin groove 124 at a plurality of positions for the purpose of preventing the removal. It is fixed so that it can rotate. The holder 122, the cutter wheel 125 and the cutter pin 127 constitute a wheel unit 121.

  After the cutter pin 127 is inserted into the pin groove 124 and the cutter wheel 125 is held, when the cutter wheel 125 needs to be replaced, the entire wheel unit 121 is replaced.

  The scribing head 112 is provided with an elevating unit that enables the elevating operation of the wheel unit 121, for example, an air cylinder using air pressure control or an electric elevating unit using a motor (rotary motor, linear motor). The scribing apparatus 100 presses and rolls the cutter wheel 125 with an appropriate load on the surface of the brittle material substrate by the elevating unit to form a scribe line.

WO2007 / 063979 Japanese Patent No. 3074143

  According to the scribing apparatus disclosed in Patent Document 1, an excellent effect is achieved in that a scribe line can be formed on a brittle material substrate such as a glass plate at high speed and with high accuracy. However, in recent years, it has been demanded to improve the manufacturing efficiency of the brittle material substrate, and to improve the formation speed of the scribe line. When the scribe line formation speed increases, the cutter pin rotation speed due to friction associated with the rotation of the cutter wheel also increases, and the end of the cutter pin breaks through the claw and comes out of the holder, possibly shortening the service life. Arise.

  The present invention has been made to solve the above-mentioned problems of the prior art, and even if the cutter pin rotates together with the rotation of the cutter wheel, the cutter pin is difficult to come off and has a long service life. The purpose is to provide units.

  In order to achieve the above object, a wheel unit of the present invention includes a holder having a pair of leg portions formed by notches at one end, a cutter pin attached between the pair of leg portions, and a cutter pin. A cutter unit that is movably mounted, wherein the cutter pin is between a through hole formed in one of the pair of leg portions and a pin receiving portion formed in the other, or the It is rotatably inserted between through holes formed in both of the pair of legs, and a contact plate is brought into contact with an end of the cutter pin on the through hole side, and the contact plate is outside the through hole. The side wall is held in the through hole by a claw formed by caulking at a plurality of locations.

  In the wheel unit of the present invention, the end portion of the cutter pin on the through hole side is not in direct contact with the claw portion, and this contact plate is penetrated by the claw portion formed on the inlet wall of the through hole via the contact plate. Since it is held in the hole, even if the cutter pin rotates together with the rotation of the cutter wheel when the scribe line is formed, the cutter pin does not substantially break through the contact plate. In addition, the external force applied to the cutter pin with the rotation of the cutter wheel is not transmitted directly to the claw part, but is dispersed and reduced until it is transmitted to the claw part via the backing plate. It becomes difficult for the board to break through the nail. Therefore, according to the wheel unit of the present invention, it is difficult to remove the cutter pin even when the scribe line forming speed is increased, and a wheel unit having a long life can be obtained.

  In the wheel unit of the present invention, the contact plate is usually larger than the through hole, but can be selected regardless of the diameter of the cutter pin and the inner diameter of the pin receiving portion, and the shape thereof is also an arbitrary shape. Can be used. Furthermore, in the wheel unit of the present invention, the cutter wheel may have a V-shaped blade having a vertical cross-sectional shape over the entire circumference along the circumference of the disk-shaped wheel, or the disk-shaped wheel. A V-shaped blade having a vertical cross-sectional shape is formed along the circumference of the groove, and grooves having a constant depth are formed in a direction intersecting the V-shaped blade (see Patent Document 2 above). ).

  Moreover, in the wheel unit of this invention, it is preferable that the said contact plate is a thing with a diameter larger than the outer diameter of the said cutter pin.

  In the wheel unit of the present invention, since the external force applied to the cutter pin from the cutter wheel is transmitted to the backing plate by friction between the cutter pin and the backing plate, the cutter pin is rotated by the rotation of the cutter wheel even when the scribe line is formed. Even if they rotate together, the force applied to the contact plate is dispersed and reduced until it is transmitted to the claw portion, so that it is more difficult for the contact plate to penetrate the claw portion. Therefore, according to the wheel unit of the present invention, the force applied to the claw portion becomes smaller, the wheel pin is more difficult to be removed, and a long-life wheel unit can be obtained.

  Further, in the wheel unit of the present invention, the pin receiving portion comprises a through hole, a contact plate is brought into contact with an end portion of the cutter pin on the pin receiving portion side, and the contact plate on the pin receiving portion side is You may hold | maintain by the nail | claw part formed by crimping the wall of the outer side of the through-hole of a pin receiving part in several places.

  According to the wheel unit of the present invention, even when the pin receiving portion is formed of a through hole, the contact plate is brought into contact with the end portion of the cutter pin on the pin receiving portion side, and this contact plate is the through hole of the pin receiving portion. Since the inlet wall is held by a claw formed by caulking at a plurality of locations, as in the case described above, the cutter pin is difficult to come off even if the scribe line formation speed is increased, and the wheel has a long service life. Unit is obtained. In addition, since both sides of the pair of leg portions can be formed by through holes, processing of the holder is facilitated.

  In the wheel unit of the present invention, the pin receiving portion may be a blind hole.

  If the pin receiving part is a blind hole, even if the cutter pin rotates together with the rotation of the cutter wheel when the scribe line is formed, the cutter pin does not substantially come off from the pin receiving part side.

  Further, in the wheel unit of the present invention, the through hole formed in one of the pair of leg portions and the pin receiving portion formed in the other have a groove shape in which the end side of the leg portion is opened. It is good as it is.

  If the through hole formed in one of the pair of leg portions and the pin receiving portion formed in the other have a groove shape in which the end portions of the leg portions are opened, the cutter wheel can be used even if the outer diameter of the cutter wheel is small. Since the length of the portion protruding from the end portion of the leg portion of the wheel can be increased, the end portion of the leg portion is less likely to contact the member to be divided when the scribe line is formed.

It is a perspective view of the wheel unit common to an Example and a comparative example. It is a partial expansion perspective view which shows the state before inserting the wheel unit of FIG. 1 in a holder attaching part. It is sectional drawing of the state which inserted the wheel unit in the holder attaching part. FIG. 4A is a front view of a wheel unit of a comparative example, and FIG. 4B is a right side view. FIG. 5A is a front view of the wheel unit of the embodiment, and FIG. 5B is a right side view. It is a perspective view of the scribing apparatus of a prior art example. 7A is a front view of a conventional cutter wheel holder, FIG. 7B is a bottom view of FIG. 7A, and FIG. 7C is an exploded view as seen from the right side. It is a perspective view of the wheel unit of a prior art example.

  Embodiments of the present invention will be described below with reference to the drawings together with examples and comparative examples. However, the embodiment described below shows an example of a wheel unit for embodying the technical idea of the present invention, and is not intended to identify the present invention as this wheel unit, and claims The present invention can be applied to other embodiments included in the scope of the above.

  First, the configuration of the wheel unit 10 and the holder mounting portion 20 common to the examples and the comparative examples will be described with reference to FIGS. 1 is a perspective view of the wheel unit 10 common to the embodiment and the comparative example, FIG. 2 is a partially enlarged perspective view showing a state before the wheel unit 10 is inserted into the holder mounting portion 20, FIG. 3 is a cross-sectional view showing a state in which the wheel unit is inserted into the holder mounting portion.

  The holder 11 of the wheel unit 10 is formed of a substantially cylindrical metal or resin, and an annular recess 12 is formed over the entire circumference of the outer peripheral surface portion. The holder 11 is provided with leg portions 13a and 13b at one end thereof in parallel with the central axis. The holder 11 has a notch 14 formed along the central axis between the leg portions 13a and 13b, and a through hole 15 in a direction perpendicular to the surface is formed on the lower end side of the leg portion 13a. A pin receiving portion (not shown) is formed on the portion 13b side. The configuration of the pin receiving portion will be described later.

  The cutter wheel 16 has, for example, a disk shape with a wheel diameter of 2.5 mm and a thickness of about 0.5 mm, a V-shaped blade having a vertical cross-sectional shape is formed along the circumference, and a through hole is formed at the center. Is formed. The cutter wheel 16 is rotatably held by the cutter pin 17 by passing the through hole at the center of the cutter wheel 16 at the same time when the cutter pin 17 is inserted into the through hole 15 and the pin receiving portion. After holding the cutter wheel 16 on the cutter pin 17, the entire wheel unit 10 is replaced together with the holder 11 without removing the cutter wheel 16 even when the cutter wheel 16 needs to be replaced. In addition, the holder 11 is formed with an operation bar 18 protruding from the side surface in order to easily restrict the insertion direction to the holder mounting portion 20 (see FIG. 2) and to facilitate the attachment / detachment.

  The holder mounting portion 20 is formed with a substantially cylindrical holding hole portion 21 for inserting and holding the wheel unit 10 and a bar introduction groove 22 for introducing the operation bar 18 of the wheel unit 10. The bar introduction groove 22 is only partially shown in the cross section of the holder mounting portion 20 in FIG. The holding hole 21 is provided with an elastic member 23 (see FIG. 3) such as a ball plunger or a spring member so that the elastic member 23 contacts the annular recess 12 of the wheel unit 10. Has been made. In addition, you may provide a hollow only in the position where the elastic member 23 contact | abuts instead of providing the annular hollow 12 in the perimeter of an outer peripheral surface part.

  The wheel unit 10 is inserted into the holding hole 21 while introducing the operation bar 18 into the bar introduction groove 22. When the wheel unit 10 is inserted into the holding hole 21 and the operation bar 18 is pulled up into the bar introduction groove 22, and the upper end of the wheel unit 10 comes into contact with the upper end of the holding hole 21, the depression 12 of the wheel unit 10 is formed. The wheel unit 10 is detachably held and fixed to the holder mounting portion 20 by engaging with the elastic member 23 of the holding hole portion 21. Further, since the operation bar 18 is prevented from moving in the rotational direction by the bar introduction groove 22, the wheel unit 10 is accurately positioned in the holding hole portion 21 of the holder mounting portion 20.

[Comparative example]
Next, a comparative wheel unit 10A corresponding to a conventional wheel unit will be described with reference to FIG. 4A is a front view of a wheel unit of a comparative example, and FIG. 4B is a right side view of the same.

  In the wheel unit 10A of the comparative example, in the wheel unit 10 common to the above-described embodiments and comparative examples, as the pair of leg portions 13a and 13b of the holder 11, a through hole 15 is formed in one leg portion 13a, and the other The leg portion 13b has a pin receiving portion 31 formed of a blind hole. In addition, as the pin receiving part 31 which consists of this blind hole, as shown to FIG. 4A, you may use the thing in which the opening 32 of the internal diameter smaller than the outer diameter of the cutter pin 17 is formed.

  That is, the inner diameter of the through hole 15 formed in one leg portion 13a is substantially the same as the outer diameter of the cutter pin 17, and the pin receiving portion 31 formed in the other leg portion 13b is Although the inner diameter is substantially the same as the outer diameter of the cutter pin 17, an opening 32 having an inner diameter smaller than the outer diameter of the cutter pin 17 is formed in the inner part of the pin receiving portion 31.

  The reason why such an opening 32 is formed is that when the cutter pin 17 is detached from the pin receiving portion 31 of the other leg portion 13b, the cutter pin 17 can be easily detached by pressing it from the outside through the opening 32. Because. With such a configuration, even if the outer diameter of the cutter pin 17 is substantially equal to the inner diameter of the through hole 15 and the inner diameter of the pin receiving portion 31, the cutter pin 17 can be detached from the through hole 15 and the pin receiving portion 31. Becomes easier.

  The end of the cutter pin 17 on the side of the through hole 15 formed on one leg 13a is caulked at a plurality of locations on the wall on the outside of the through hole 15, as shown in FIG. 4B. The claw portion 30A is formed so as not to come off. Thereby, the cutter pin 17 is rotatably attached to one leg part 13a. Here, the cutter wheel 16 has a disc shape with a wheel diameter of 2.5 mm and a thickness of 0.65 mm, and a V-shaped blade having a vertical cross-sectional shape is formed along the circumferential portion. In addition, a through hole provided in the center of the cutter wheel 16 having an inner diameter of 0.8 mm was used. Further, as the cutter pin 17, a cutter pin having an outer diameter of 0.8 mm is used here.

[Example]
Next, the wheel unit 10B of the embodiment will be described with reference to FIG. 5A is a front view of the wheel unit of the embodiment, and FIG. 5B is a right side view of the same. In the wheel unit 10B of the embodiment, the outer diameter of the through hole 15 formed in one leg portion 13a of the holder 11 is increased, and the outer diameter is larger than the cutter pin 17 in the increased diameter portion. A point-shaped backing plate 19 is disposed, and the backing plate 19 is held so as not to come off by claw portions 30B formed by caulking the wall on the outside of the through hole 15 at, for example, four places. Thus, the configuration is different from the wheel unit 10A of the comparative example, and other configurations are substantially the same as the wheel unit 10A of the comparative example. Therefore, in the following, the same reference numerals are given to the same components as those of the wheel unit 10A of the comparative example, and the detailed description thereof is omitted to avoid redundant description.

  In the wheel unit 10B of the example, the cutter wheel 16 has a disk shape with a wheel diameter of 2.5 mm and a thickness of 0.65 mm as in the case of the comparative example, and along the circumferential portion. A vertical cross-section V-shaped blade is used, and the inner diameter of the through hole provided in the center of the cutter wheel 16 is 0.8 mm, and the outer diameter of the cutter pin 17 is 0.8 mm. Is used. Furthermore, the contact plate 19 used in the wheel unit 10B of the example is a disk-shaped member having a diameter of 2 mm and a thickness of 0.3 mm. Further, the claw portion 30B in the wheel unit 10B of the example was formed to have the same size by applying the same force as that of the claw portion 30A in the wheel unit of the comparative example.

  With such a configuration, in the wheel unit 10B of the embodiment based on the present invention, the contact plate 19 is held by the claw portion 30B formed by caulking on the outer peripheral wall of the through hole 15. Therefore, the end portion of the cutter pin 17 on the side of the through hole 15 is not directly held by the claw portion 30 </ b> B, but is held in the through hole 15 by the contact plate 19. Therefore, if the scribe speed is increased when the scribe line is formed, the cutter pin 17 easily rotates together with the rotation of the cutter wheel 16, but the external force applied to the cutter pin 17 is not directly transmitted to the claw portion 30B. Since it is transmitted to the claw portion 30B via the contact plate 19, the external force transmitted to the claw portion 30B is dispersed and becomes smaller. Therefore, according to the wheel unit 10B of the present invention, even when the scribe line formation speed is increased and the force applied to the cutter pin 17 is increased, the cutter pin 17 is difficult to be removed, and compared with the wheel unit of the comparative example. Thus, the wheel cutter 10B having a long life of about 1.5 times or more can be obtained.

  Moreover, in the wheel unit 10B of the above-described embodiment, the example in which the pin receiving portion 31 is made of a blind hole is shown. However, the pin receiving portion is also formed by a through hole, and the end of the cutter pin on the pin receiving portion side is shown. A claw part is formed by abutting the abutting plate also on the portion, and by crushing the inlet wall of the through hole of the pin receiving portion at a plurality of positions on the abutting plate on the pin receiving portion side. It is good also as what is hold | maintained in a through-hole. Even in this case, even if the cutter pin rotates together with the rotation of the cutter wheel when the scribe line is formed, the cutter pin does not substantially break through the contact plate of the pin receiving portion, and the nail is stopped by the contact plate. The part becomes difficult to be destroyed.

  In the wheel unit 10B of the above-described embodiment, an example in which a disk-shaped member is used as the backing plate is shown, but any shape that can prevent the cutter pin 17 from coming out of the through hole 15 is acceptable. It may be a flat plate, a polygonal flat plate, or the like.

  Further, in the wheel unit 10B of the above-described embodiment, the through holes 15 and the pin receiving portions 31 formed in the pair of leg portions 13a and 13b are formed in a groove shape in which the end portions of the leg portions are opened. It may be a thing. With such a configuration, even when the outer diameter of the cutter wheel 16 is small, the length of the portion protruding from the ends of the leg portions 13a and 13b of the cutter wheel 16 can be increased. The end portions of the leg portions 13a and 13b are less likely to come into contact with the member to be divided, and the scribe line can be easily formed.

  Moreover, in the wheel unit 10B of the said Example, the example using the thing in which the vertical cross-sectional shape V-shaped blade was formed over the perimeter along the circumferential part of the disk-shaped wheel as the cutter wheel 16 was shown. However, a vertical cross-sectional V-shaped blade is formed along the circumference of the disc-shaped wheel as shown in Patent Document 2 above, and is constant in a direction intersecting the vertical cross-sectional V-shaped blade. You may use what formed the groove | channel of the fixed depth by pitch. When a cutter wheel as shown in Patent Document 2 is used, a scribe line having a small horizontal crack can be formed while a particularly long vertical crack is generated.

10, 10A, 10B: Wheel unit 11: Holder 12: Annular depression 13a, 13b: Leg part 14: Notch 15: Through hole 16: Cutter wheel 17: Cutter pin 18: Operation bar 19: Contact plate 20: Holder Mounting part 21: Holding hole part 22: Bar introduction groove 23: Elastic member 30A, 30B: Claw part 31: Pin receiving part 32: Opening

Claims (5)

A holder having a pair of legs formed by notches at one end;
A cutter pin attached between the pair of legs,
A cutter wheel rotatably attached to the cutter pin;
A wheel unit comprising:
The cutter pin is rotatably inserted between a through hole formed in one of the pair of leg portions and a pin receiving portion formed in the other,
A contact plate is brought into contact with the end of the cutter pin on the through hole side,
The wheel unit, wherein the contact plate is held in the through hole by a claw portion formed by caulking the wall on the outside of the through hole at a plurality of locations.   The wheel unit according to claim 1, wherein the contact plate has a diameter larger than an outer diameter of the cutter pin. The pin receiving portion comprises a through hole,
A contact plate is brought into contact with the end of the cutter pin on the pin receiving portion side,
The pin plate on the pin receiving portion side is held in the through hole by a claw portion formed by caulking the wall on the outside of the through hole of the pin receiving portion at a plurality of locations. Item 3. The wheel unit according to Item 1 or 2.   The wheel unit according to claim 1, wherein the pin receiving portion is a blind hole.   The through hole formed in one of the pair of leg portions and the pin receiving portion formed in the other are each formed in a groove shape in which an end portion side of the leg portion is opened. The wheel unit in any one of -4.

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