TW201412665A - Cutter wheel holder unit - Google Patents

Abstract

This invention provides a cutter wheel holder unit capable of stabilizing the holding position of a scribing wheel and increasing the linearity of a scribe line, with the solution means comprising providing a scribe wheel 30 as a circular plate provided with a through hole 31 at the center and a V-shaped cutter front edge along the outer periphery of the circular plate. A cutter wheel holder body 10 has a holder groove 12 with a predetermined width for insertion into the scribe wheel 30, and a pair of support parts 13, 14. Ball holding parts 17 and 18 are inserted into the through holes 15 and 16 of the support parts 13, 14, allowing a pair of balls 24 and 25 and the ball holding parts 17 and 18 to clamp the scribe wheel 30 therein in a rotatable manner.

Description

Cutter wheel holder unit

The present invention relates to a cutter wheel holder unit for holding a scribe wheel for forming a score line on a brittle material substrate.

A scoring device is used in order to scribe the brittle material substrate to a desired size and to divide it. The scoring device is provided with a cutter wheel holder unit in the direction of the scratched surface of the brittle material substrate. Fig. 1 is a cross-sectional view showing a conventional cutter wheel holder unit disclosed in Patent Document 1. The cutter wheel holder unit 100 has a cutter wheel holder body 110, a scoring wheel 120, and a pin 130, and a scribing wheel 120 is attached to the cutter wheel holder body 110.

As shown in FIG. 1, a holder groove 111 and a pin hole 112 are formed in a lower portion of the cutter wheel holder 110. The scribing wheel 120 is a disk-shaped member having a through hole penetrating the center of the two circular side faces and having a V-shaped blade tip end along the outer periphery of the scribing theory 120. The front end of the V-shaped blade is formed with a ridge line along the outer circumference of the scoring wheel 120. The pin 130 is a cylindrical member and is inserted into the through hole of the scoring wheel 120 and the pin hole 112 of the holder 110, and holds the scoring wheel 120 in a rotatable manner.

The cutter wheel holder 100 holds the scribing wheel 120 in the holder groove 111 using the pin 130, and the gap between the holder grooves 111 can be finely adjusted by the screw 140. The pin 130 is held by the one of the projections 141, 142 by one of the projections on the side, and the washers 141, 142 are respectively screwed by the screws 143, 144.

Patent Document 1: Japanese Patent Publication No. 2011-093186

The conventional cutter wheel holder unit retains the groove so that the screw 140 is set to be freely adjustable, and a gap of about 10 to 20 μm is provided so as to match the left and right sides of the scoring wheel. However, it is difficult to adjust the gap to an optimum value. If the gap is too small, the rotational resistance of the scoring wheel becomes large, and if the gap is too large, the linearity of the scribe line formed on the substrate is lowered. Therefore, there is a disadvantage in that it is difficult to perform the holding while stabilizing the scoring wheel so that the rotation resistance thereof is small. Further, since the rotation resistance is generated between the pin hole and the pin, the pin, and the scoring wheel, it is difficult to further reduce the rotational resistance of the scoring wheel.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a cutter wheel holder unit which uses a scribe wheel which has been widely used in the center and has a through hole, and can be scribed The rotation resistance of the wheel becomes small, and the linearity of the score line can be improved.

In order to solve the problem, the cutter wheel holder unit of the present invention includes: a scribing wheel having a V-shaped cross section formed on a circumferential surface thereof, and a circular through hole at the center; the cutter wheel holder body is a through hole having a pair of opposing surfaces facing each other and having a pair of support portions coaxially penetrating the pair of support portions; the pair of ball holding portions being held by the through hole of the cutter holder body at a predetermined interval And having a groove on the opposite surface; and two spheres are sandwiched between the respective spherical body holding portions and the side faces of the through holes of the scoring wheel, and have a larger diameter than the through holes of the scribing wheel The diameter of the scribe wheel is smaller than the diameter of the scribe wheel.

Here, it is also possible to have a pair of elastic means for biasing the pair of spherical body holding portions and the two balls from the outer side of the scribing wheel.

Here, the sphere may also be a ceramic orthosphere.

In order to solve the problem, the cutter wheel holder unit of the present invention includes: a scribing wheel having a V-shaped cross section formed on a circumferential surface thereof, and a circular through hole at the center; the cutter wheel holder body is a through hole having a pair of opposing faces facing each other and coaxially penetrating the pair of support portions; a pair of bearings held in the through hole; a pair of bearing holders inserted into the blade The wheel retaining body has a through hole, and the inner wheel of the pair of bearings is fixed to the outer wheel of each pair of bearings at a predetermined interval; and the two balls are sandwiched between the inner wheel and the inner wheel of each bearing Between the sides of the through hole of the wheel, and having a diameter larger than the diameter of the through hole of the scribing wheel and the inner diameter of the pair of bearings.

Here, it is also possible to have a pair of elastic means for biasing the pair of bearings and the pair of bearing holders and the two balls from the outer side of the scoring wheel.

Here, the sphere may also be a ceramic orthosphere.

According to the invention having such a feature, the scoring wheel is constituted by the ball and the spherical body holding portion having the groove to form the cutter holder unit. Therefore, the cutter wheel holder can be constructed by using a ball for a general scribe wheel. In the present invention, there is no gap between the ball and the scoring wheel, the ball and the bearing, and the linearity of the score line can be improved as compared with the cutter wheel holder unit which fixes the scoring wheel by a conventional pin. Further, even if the diameter of the sphere is slightly changed, the scribing wheel can be held by appropriately adjusting the interval between the spherical body holding portions, so that the effect of manufacturing becomes extremely easy. Further, since the ball and the ball holding portion are only in line contact at the time of scribing, the friction can be reduced.

According to the invention having such characteristics, the scoring wheel is held by the ball and the minute bearing, thereby constituting the cutter holder unit. Therefore, by using general characterization The wheel, the ball and the bearing form a cutter wheel holder. In the present invention, there is no gap between the ball and the scoring wheel, the ball and the bearing, and the linearity of the score line can be improved as compared with the cutter wheel holder unit which fixes the scoring wheel by a conventional pin. Further, as the inner circumference of the bearing rotates with the rotation of the scoring wheel, the contact area between the scoring wheel and the sphere is also small, so that the change in the rotational impedance can be made small. Further, even if the diameter of the spherical body is slightly changed by abrasion or the like, the scribing wheel can be held without any gap by appropriately adjusting the interval between the bearing holders, so that the effect of manufacturing becomes extremely easy.

1, 4‧‧‧Cutter wheel holder unit

10,40‧‧‧Cutter wheel holder

11,15,16,31,41,45,46,61‧‧‧through holes

12, 42‧‧‧ Keep grooved

13,14,43,44‧‧‧Support Department

17,18‧‧1 sphere holding department

19,20,49,50‧‧‧ditch

21,22,51,52‧‧‧Sheet spring

23,26,53,56‧‧‧bolts

24,25,54,55‧‧‧ sphere

30, 60‧‧‧ marking wheel

47,48‧‧‧ bearing holder

57,58‧‧‧ bearing

Figure 1 is a diagram showing the construction of a conventional cutter wheel holder unit.

Fig. 2 is a cross-sectional view showing a cutter wheel holder unit according to a first embodiment of the present invention.

Fig. 3 is a front view showing the configuration of a cutter wheel holder according to a first embodiment of the present invention.

Fig. 4 is a front view of the cutter wheel holder according to the first embodiment of the present invention.

Fig. 5 is a cross-sectional view showing a cutter wheel holder unit according to a second embodiment of the present invention.

Fig. 6 is a front view showing the configuration of a cutter wheel holder according to a second embodiment of the present invention.

Fig. 7 is a front view of a cutter wheel holder according to a second embodiment of the present invention.

The cutter wheel holder unit according to the first embodiment of the present invention will be described with reference to the drawings. Figure 2 is a cross-sectional view of the cutter wheel holder unit, and Figure 3 is a front view thereof. The cutter wheel holder unit 1 has a cutter wheel holder 10 and a scoring wheel 30, and is attached to the lower end of the cutter wheel holder 10 to hold the scoring wheel 30 in a rotatable manner. The cutter wheel holder 10, as in the front view shown in FIG. 4, is a member having a rectangular shape in which the left and right portions are cut, and is fixed at the upper portion to fix the cutter wheel. There is a through hole 11 of 10. Below the cutter wheel holder 10, a holder groove 12 is formed to be open below, and a portion sandwiching the holder groove 12 is used as the support portions 13, 14. The opposing faces of the support portions 13, 14 of the cutter wheel holder 10 are formed substantially parallel, and the interval w of the retainer grooves 12 is formed to be larger than the thickness of the score wheel 30.

At the lowermost ends of the left and right support portions 13, 14 are coaxially formed through the through holes 15, 16 which vertically intersect the holder grooves 12 and penetrate the support portions 13, 14. The through holes 15, 16 may also have a slightly open slit at the lower end and hold the ball holding portions 17, 18. The ball holding portions 17, 18 are cylindrical members, and a conical groove is formed in a central portion of one end face.

Further, in the cutter wheel holder 10, the upper portions of the support portions 13, 14 are provided with the spiral grooves 19, 20 from the side as shown. The spiral grooves 19, 20 are used to screw the leaf springs described below.

The scoring wheel 30 is, for example, a disc-shaped member formed of a sintered diamond or a super-hard alloy, for example, having a thickness d, and has a V-shaped blade that forms a ridge line along the outer peripheral portion. A circular through hole 31 is provided at the center of the scoring wheel 30. The edge of the through hole 31 is slightly formed in a tapered shape. The outer diameter of the scoring wheel 30 is, for example, 1.0 to 6.0 mm, and the diameter of the through hole is 0.4 to 1.5 mm. Since the smaller the outer diameter of the scoring wheel, the higher the rotational resistance becomes, the cutter wheel holder unit of the present invention is particularly preferable for the case of using a scribing wheel of 1.0 to 3.0 mm.

A pair of leaf springs 21, 22 are attached to the outside of the support portions 13, 14 on the left and right of the cutter wheel holder. As shown in FIG. 2 and FIG. 3, the leaf springs 21, 22 are flat members, and are elastic members having a bent portion formed at two positions in the center portion, and are attached to the ball holding portion protruding from the support portion. One of the ends 17, 17, is pressed from the outside of the cutter holder.

In addition, the assembly of the cutter wheel holder unit will be described with reference to FIGS. 2 and 3 . First, the spherical body holding portion 17 is inserted from the side of the support portion 13 toward the through hole 15, and the outer side is The leaf spring 21 closes the through hole 15 and is screwed by the bolt 23 to hold the leaf spring 21. Then, the ball 24 is brought into contact with the groove at the left end of the ball holding portion 17. Then, the ball 24 is brought into contact with the wedge portion of the opening of the through hole 31 formed at the center of the scoring wheel 30. Further, the left side of the scribing wheel 30 is similarly to the right side, and the spherical body 25 having the same shape as the spherical body 24 is fitted into the recess of the spherical body holding portion 18 into which the through hole 16 is inserted. At this time, the spherical body holding portions 17, 18 are slightly protruded from the support portion. In this state, the ball holding portion 18 is held by the leaf spring 22 from the left side of FIG. 2, and the leaf spring 22 is fixed by the bolt 26 and the scoring wheel 30 is adjusted so as to be located substantially at the center of the holder groove 12. . Here, the leaf springs 21, 22 and the bolts 23, 26 constitute a biasing means for biasing the ball holding portions 17, 18 and the balls 24, 25 so as to face the central scribing wheel 30.

As described above, in the cutter wheel holder unit of the present embodiment, the ball holding portions 17, 18 and the balls 24, 25 and the scribe wheel 30 held therebetween are not detached from the cutter wheel holder 1. Moreover, by appropriately selecting the diameters of the spheres 24, 25 in advance, the scoring wheel 30 hardly moves in the axial direction, and is kept freely rotatable by the spheres 24, 25.

Here, the scribing wheel 30 is held by the ball 24, 25 to rotate the scoring wheel and the inner surface of the groove of the ball holding portions 17, 18 is in line contact with the balls 24, 25 when the scoring is performed. Therefore, the friction can be made extremely small. Therefore, the rotation becomes smooth and the scoring load can be made light.

Further, in this embodiment, the scribing wheel can be used as a scribing wheel which has been widely used in the center and has a through hole. In addition, one of the abutting engraving wheels and the spherical bodies 24, 25 may be a ceramic ball (Si ₃ N ₄ ) or a metal ball or the like, but is made of a sintered diamond or a super hard alloy having a high hardness. The scoring wheel contacts and wears, so the life of the sphere can be extended by using a ceramic positive sphere of relatively high hardness. The diameter of the spherical body 24, 25 is smaller than the diameter of the scribing wheel 30 itself, and is larger than the through hole 31 of the scribing wheel 30. A diameter having the range, for example, Φ0.5~Φ1.5 mm can be used. A variety of spheres of diameter. The scribing wheel has a large number of sizes depending on the object to be used, and the diameter of the through hole is also different. However, it is not necessary to prepare the pin in advance for the through hole of the scoring wheel by using the general-purpose ball.

Further, in this embodiment, the pair of spherical body holding portions are held so as to protrude slightly outward from the through holes 15, 16 and the force is applied by the leaf springs 21, 22 to press inward. Thereby, the scoring wheel and the ball and the ball holding portion are fixed at a predetermined position, and the adjustment of the gap is not required. In addition, since there is no gap on both sides of the scoring wheel, the linearity of the scoring wheel can be improved. Further, although the use of the upper portion of the groove of the spherical body holding portion, the wedge portion of the spherical body or the scoring wheel is gradually worn out due to wear, the plate springs 21, 22 are clamped from both sides. Therefore, the position of the scoring wheel 30 can be maintained at the center position, and there is no case where the linearity of the score line is damaged over a long period of time.

Further, in this embodiment, the spherical body holding portion is held by the leaf spring and the bolt, but the scoring wheel may be pressed from both sides by the pair of ball holding portions, and brazing may be used. And fixed to the cutter wheel holder 10. Further, in the present embodiment, a conical groove is formed in the spherical body holding portion, but a groove having an arbitrary shape such as a hemispherical shape that rotates with respect to the central axis may be formed. Further, from the viewpoint of making the ball holding portion and the ball wear less, it is preferable that the contact area between the ball holding portion and the ball is small, and it is preferable that the groove of the ball holding portion is conical or slightly convex. . In addition, it is difficult to maintain the sphere in the case where the apex angle of the cone is too shallow, and if it is too deep, the contact area becomes large and the friction becomes large, so the apex angle of the cone is preferably 70 to 100°, more preferably 80 to 100°. .

The cutter wheel holder unit according to the second embodiment of the present invention will be described with reference to the drawings. Figure 5 is a cross-sectional view of the cutter wheel holder unit, and Figure 6 is a front view thereof. Knife wheel holder The unit 4 has a cutter holder 40 and a scoring wheel 60, and is attached to the lower end of the cutter holder 40 to hold the scoring wheel 60 in a rotatable manner. The cutter wheel holder 40 has a rectangular parallelepiped member on the lower left and right sides as shown in the front view shown in Fig. 7, and has a through hole 41 for fixing the cutter wheel holder 40 at the upper portion. Below the cutter wheel holder 40, a holder groove 42 is formed to open below, and a portion sandwiching the holder groove 42 is used as a support portion 43, 44. The opposing faces of the support portions 43, 44 of the cutter wheel holder 10 are formed substantially parallel, and the spacing w of the retainer grooves 42 is greater than the thickness of the score wheel 60.

At the lowermost ends of the left and right support portions 43, 44, through holes 45, 46 that perpendicularly intersect the holder grooves 42 and penetrate the support portions 43, 44 are coaxially formed. The through holes 45, 46 may also form a slightly open slit at the lower end, and hold the bearing and the bearing holder 47, 48. The bearing holder 47, 48 is a cylindrical member, and a circular recess is formed in a central portion of the end surface of the retainer having the groove side without contacting the inner wheel of the bearing, and the outer edge of the recess becomes the outer wheel only contacting the bearing. .

Further, in the cutter wheel holder 40, as shown in the figure, the spiral grooves 49, 50 are provided from the side in the upper portions of the support portions 43, 44. The grooves 49, 50 are used to screw the leaf springs described below.

The scoring wheel 60 is, for example, a disk-shaped member formed of a sintered diamond or a super-hard alloy, for example, having a thickness d, and has a V-shaped blade that forms a ridge line along the outer peripheral portion. A circular through hole 61 is provided at the center of the scoring wheel 60. The edge of the through hole 61 is formed in a slightly wedge shape. The outer diameter of the scoring wheel 60 is, for example, 1.0 to 6.0 mm, and the diameter of the through hole is 0.4 to 1.5 mm. Since the smaller the outer diameter of the scoring wheel, the rotational resistance becomes larger, and therefore the cutter wheel holder unit of the present invention is particularly preferable for the case of using a scribing wheel of 1.0 to 3.0 mm.

A pair of leaf springs 51, 52 are attached to the outer sides of the support portions 43, 44 on the left and right of the cutter wheel holder. The leaf springs 51, 52, as shown in Figs. 2 and 3, are flat members and are attached to the central portion. The elastic member having the bent portion of the two portions is pressed against one side of the bearing holder 47, 48 protruding from the support portion from the outer side of the cutter holder.

In addition, the assembly of the cutter wheel holder unit will be described with reference to FIGS. 5 and 6 . First, the bearing holder 47 is inserted into the through hole 45 from the support portion 43 side, and the through hole 45 is closed by the leaf spring 51 from the outside, and the bolt 53 is screwed to hold the leaf spring 51. Then, a bearing 57 is attached to the left end of the bearing holder 47. At this time, only the outer ring of the bearing 57 is in contact with the bearing holder 47. The inner wheel of the bearing 57 contacts the ball 54 and brings the ball 54 into contact with the wedge portion of the opening of the through hole 61 formed at the center of the scoring wheel 60. Further, the spherical body 55 having the same shape as the spherical body 54 is brought into contact with the scribing wheel 60 in the left direction in the drawing, so that the inner wheel of the bearing 58 contacts the spherical body 55. Next, only the outer ring of the bearing 58 is held by the bearing holder 48 inserted into the through hole 46. At this time, the bearing holders 47 and 48 slightly protrude from the support portion. In this state, the bearing holder 48 is held by the leaf spring 52 from the left side of FIG. 2, and the leaf spring 22 is fixed by the bolt 56 and the scoring wheel 60 is adjusted to be located substantially in the holder groove 42. central. Here, the leaf springs 51, 52 and the bolts 53, 56 constitute a biasing means for biasing the bearing holders 47, 48 and the bearings 57, 58 and the balls 54, 55 so as to face the central scribing wheel 30.

As described above, in the cutter wheel holder unit of the present embodiment, the bearing holders 47, 48 and the bearings 57, 58 and the balls 54, 55 and the scribing wheel 60 held therebetween are not provided with the cutter holder 2 The situation of falling off. Further, by appropriately selecting the diameters of the balls 54, 55 in advance, the scribing wheel 30 hardly moves in the axial direction and is rotatably held by the balls 54, 55 and the bearings 57, 58.

Here, by using the bearings 57, 58 of the extremely small diameters to hold the scribing wheel 60 via the balls 54, 55, the scoring wheel can be rotated and the friction can be made extremely small when scribing. Therefore, the rotation can be changed It is smooth and makes the scribe load lighter.

Further, in this embodiment, the scribing wheel can be used as a scribing wheel which has been widely used in the center and has a through hole. In addition, a pair of spheres 54, 55 which are in contact with the inner wheel of the scoring wheel and the bearing can be used for various spheres such as a ceramic positive sphere (Si ₃ N ₄ ) or a metal sphere, but sintered due to high hardness. The diamond or superhard alloy scribe wheel is in contact with and wears, so the life of the sphere can be extended by using a ceramic positive sphere of relatively high hardness. The diameter of the spherical body 54, 55 is smaller than the diameter of the scribing wheel 60 itself, and is larger than the inner diameter of the ball bearing and the through hole 61 of the scoring wheel 60. A diameter having the range such as Φ0 can be used. .5~ Φ1.5mm diameter of various spheres. The scribing wheel has a large number of sizes depending on the object to be used, and the diameter of the through hole is also different. However, it is not necessary to prepare the pin in advance for the through hole of the scoring wheel by using the general-purpose ball.

Further, in this embodiment, the pair of bearing holders 47, 48 are held so as to protrude slightly outward from the through holes 45, 46, and the force is applied by the plate springs 51, 52 to press inward. Thereby, the inner wheel of the bearing and the scoring wheel are fixed to a predetermined position via the sphere, and the adjustment work of the gap is not required. In addition, since there is no gap on both sides of the scoring wheel, the linearity of the scoring wheel can be improved. Further, although there is a case where the wedge portion of the ball or the scoring wheel is gradually worn out due to use, in this case, the position of the scoring wheel 60 can be maintained by adjusting the pressing force of the leaf springs 51, 52. At the center position, there is no long-term damage to the linearity of the score line.

Further, in this embodiment, the bearing holder is held by the leaf spring and the bolt, but it may be fixed by welding or the like while the scoring wheel is pressed from both sides by the pair of bearing holders. The cutter wheel holder 40.

The invention can be used for stabilizing the position of the marking wheel in the scoring A scribing device for scribing material or a brittle material cutting wheel for a hand-cutting material substrate is automatically performed.

1‧‧‧Cutter wheel holder unit

10‧‧‧Cutter wheel holder

11,15,16,31‧‧‧through holes

12‧‧‧Holding grooves

13,14‧‧‧Support Department

17,18‧‧1 sphere holding department

19,20‧‧‧ditch

21,22‧‧‧plate spring

23,26‧‧‧ bolts

24,25‧‧‧ sphere

30‧‧‧Scratch

W‧‧‧ interval

Claims (6)

A cutter wheel holder unit comprising: a scoring wheel having a V-shaped cutting edge formed on a circumferential surface thereof and having a circular through hole at a center; the cutter wheel holder body having parallel to each other One of the opposing faces faces the support portion and the through hole that coaxially penetrates the pair of support portions; the pair of ball holding portions are held by the through hole of the cutter holder body at a predetermined interval, and are opposed to each other The surface has a groove; and the two spheres are sandwiched between the respective spherical body holding portions and the side faces of the through holes of the scoring wheel, and have a larger diameter than the through hole of the scribing wheel. The diameter of the scoring wheel is a small diameter. A cutter wheel holder unit according to claim 1, wherein the pair of ball holding portions and the two balls are biased by a biasing force from the outer side of the scoring wheel. The cutter wheel holder unit of claim 1, wherein the ball system is a ceramic sphere. A cutter wheel holder unit comprising: a scoring wheel having a V-shaped cutting edge formed on a circumferential surface thereof and having a circular through hole at a center; the cutter wheel holder body having parallel to each other One of the opposing faces faces the support portion and the through hole that coaxially penetrates the pair of support portions; a pair of bearings are held in the through hole; and a pair of bearing holders are inserted into the cutter wheel holder a through hole of the body, and holding the outer wheel of each pair of bearings at an interval between the inner rings of the pair of bearings; Two spheres are sandwiched between the inner wheel of each bearing and the side of the through hole of the scoring wheel, and have a diameter larger than a diameter of the through hole of the scribing wheel and an inner diameter of the pair of bearings . The cutter wheel holder unit of claim 4, wherein the pair of bearings and the pair of bearing holders and the two balls are biased from the outer side of the scoring wheel. The cutter wheel holder unit of claim 4, wherein the ball system is a ceramic sphere.