JP5338779B2 - Scribe head - Google Patents

Description

  The present invention relates to a scribe head used in a scribe device, and more particularly to a scribe head capable of stabilizing a scribe line.

  Conventionally, in a flat panel display (FPD) such as a liquid crystal display panel or a liquid crystal projector substrate, a mother glass substrate is bonded together in a manufacturing process, and then divided into a single panel of a predetermined size. For dividing a brittle material substrate such as a mother glass substrate, there are a scribing process and a breaking process, and a scribing apparatus is used in the scribing process. In manufacturing an FPD, a single mother substrate is scribed, and a plurality of panel substrates are taken out by a breaking process.

  In the scribe device, for example, as shown in Patent Document 1, a table for placing and holding a brittle material substrate and a horizontal direction relative to the brittle material substrate can be moved in the vertical direction. A movable scribe head is provided. A holder joint is attached to the lower end of the scribe head. The holder joint holds the scribing wheel rotatably at the lower end.

WO2008-149515

  However, in such a conventional scribe head, there is a problem that when the distance between the linear slider and the holder joint is increased, it is difficult to stably move the holder joint up and down.

  The present invention has been made paying attention to such conventional problems, and an object of the present invention is to provide a scribe head capable of stably moving the holder joint up and down.

In order to solve this problem, a scribe head according to the present invention has a base plate, a bottom plate attached perpendicularly to the base plate, having a through-hole, driven by a motor, and having a housing shape having an opening on the front surface. A member whose rear surface is connected to a linear way and slides up and down along the base plate via the linear way and a holder joint having a scribing wheel are held at the lower end, and the upper surface protrudes sideways. a holder flange having flanges, said penetrate the bottom plate through hole of, those having a a holder bracket for connecting the flange of the holder flange and the rear surface side of the portion of the lower surface of the slider.

  According to the present invention having such features, the holder flange to which the holder joint is attached and the slider are connected by the holder bracket. Therefore, the vertical movement of the holder flange can be ensured even when there is a gap between the holder joint and the slider. Further, even when a load is applied to the scribing wheel during scribing, scribing can be performed accurately. Further, even if there is a gap between the holder joint and the slider, an effect that the manufacturing can be easily performed is obtained.

FIG. 1 is a perspective view showing an example of a scribe head according to an embodiment of the present invention. FIG. 2 is a front view showing a state in which a central portion of the scribe head according to the present embodiment is cut away. FIG. 3 is a central longitudinal sectional view of the scribe head according to the present embodiment. FIG. 4 is a perspective view showing a bottom plate according to the present embodiment. FIG. 5 is a perspective view showing a slider according to the present embodiment. FIG. 6 is a view showing a holder bracket according to the present embodiment. FIG. 7 is a perspective view and a sectional view showing a holder flange according to the present embodiment. FIG. 8 is a view showing a holder joint according to the present embodiment. FIG. 9 is a sectional view showing a state in which the holder joint is lowered in the scribe head according to the present embodiment.

  FIG. 1 is a perspective view showing an example of a scribe head according to an embodiment of the present invention, FIG. 2 is a front view of the scribe head cut out, and FIG. 3 is a central longitudinal sectional view of the scribe head. As shown in these drawings, the scribe head 10 has a rectangular base plate 11 that is vertically attached to a bridge (not shown). A top plate 12 is provided horizontally above the base plate 11, and a bottom plate 13 is provided parallel to the top plate 12 below the base plate 11. A servo motor 14 is fixed on the top of the top plate 12 with its rotational axis facing downward. In addition, an encoder 15 for detecting the rotation angle is provided on the servo motor 14. As shown in FIG. 3, a shaft 17 a of a ball screw 17 is attached to the motor shaft of the servo motor 14 via a coupling 16. A slider 18 is attached to the base plate 11 between the top plate 12 and the bottom plate 13 via a linear way 19 so as to be movable up and down. A nut portion 17 b of a ball screw 17 is attached to the slider 18, and the slider 18 can be moved up and down as the servo motor 14 rotates. A holder bracket 20 is attached to the lower surface of the slider 18, and a holder flange 21 is attached to the lower end of the holder bracket 20.

  Next, each member will be described in more detail. 4A and 4B are perspective views showing the bottom plate 13 as viewed from above and below. The bottom plate 13 is a flat plate-like member, and has a protruding portion 13a formed along the side surface at one end. The bottom plate 13 is screwed to the base plate 11 by a screw hole provided in the protruding portion 13a. Connected vertically. A rectangular through hole 13b is formed adjacent to the protrusion 13a. A pair of side walls 13c and 13d parallel to the longitudinal direction of the bottom plate 13 are formed on the other side of the protrusion 13a.

  5A and 5B are perspective views showing the slider 18 as viewed from above and below. The slider 18 is a housing-like member having an opening on the front surface as shown in the figure, and a U-shaped notch 18 a for allowing the ball screw 17 to pass through is formed on the upper surface. Further, a through hole 18b for rotatably holding the spline shaft 22 and screw grooves 18c and 18d for connecting the holder bracket 20 are formed on the lower surface of the slider 18.

  As shown in FIG. 6, the holder bracket 20 is a thin rectangular parallelepiped member partially expanded, and a projection 20a perpendicular to the planar portion is formed at one end. The protrusion 20a has a notch curved inward, and a pair of through holes 20b and 20c for connecting to the slider 18 are formed on both sides thereof. On the other end of the holder bracket 20, thread grooves 20d and 20e for connecting the holder flange 21 are formed.

  A holder flange 21 is provided below the bottom plate 13. The holder flange 21 is a cylindrical member, as shown in a perspective view in FIG. 7A and a central longitudinal sectional view in FIG. 7B, and has a flange 21a formed on the upper surface, and the lower end of the holder bracket 20 described above. It is fixed with screws. A metal collar 23 is attached to the cylindrical portion below the holder flange 21. The holder flange 21 connects the holder joint 24 to the lower surface thereof, and is fixed by press-fitting the holder joint 24 into the inner wall of the metal collar 23.

  FIG. 8 is a view showing the holder joint 24, in which the left side is a side view and the right side is a cross-sectional view. The holder joint 24 has a cylindrical king pin 31 in the center. The king pin 31 is rotated with the rotation of the spline shaft 22, and the first and second bearings 32, 33 for holding the king pin 31 rotatably at the upper part and the central part are provided in the columnar part. Is provided via a cylindrical spacer 34. A king pin press 35 and a bearing cover 36 are provided below the king pin 31. A scribing wheel 38 is rotatably held by a pin 37 below the king pin 31.

  In this embodiment, as shown in a cross-sectional view in FIG. 3, the holder bracket 20 passes through the through hole 13 b provided in the bottom plate 13, and the upper slider 18 and the holder flange 21 pass through the holder bracket 20. Are connected.

  Next, the operation of the present embodiment will be described. The ball screw 17 is rotated by driving a servo motor 14 attached to the upper surface of the top plate 12. Thereby, the slider 18 can move up and down between the highest position of the linear way 19 shown in FIG. 3 and the lowest position shown in FIG. As the slider 18 moves up and down, the holder bracket 20 and the holder flange 21 connected to the slider 18 also move up and down at the same time. Thus, even when the space | interval of the slider 18 and the holder flange 21 is large, these can be connected and moved up and down.

  In this embodiment, the slider and the holder flange are connected by the holder bracket, but the lower surface of the slider itself may be protruded downward so that it can be inserted into the through hole of the bottom plate. . Alternatively, a structure in which the upper portion of the holder flange protrudes and can be directly connected to the slider can be used.

  The present invention can be connected even when the distance between the slider and the holder flange of the lifting mechanism of the scribe head is large, and can be suitably used for a scribe device.

DESCRIPTION OF SYMBOLS 10 Scribe head 11 Base plate 12 Top plate 13 Bottom plate 14 Servo motor 15 Encoder 16 Coupling 17 Ball screw 18 Slider 19 Linear way 20 Holder bracket 21 Holder flange 22 Spline shaft 23 Metal collar 24 Holder joint

Claims (1)

A base plate;
A bottom plate mounted perpendicular to the base plate and having a through hole;
A housing-like member driven by a motor and having an opening on the front surface, the rear surface of which is connected to a linear way and slides up and down along the base plate via the linear way ;
A holder flange having a scribing wheel holder joint at the lower end and having a flange protruding sideways on the upper surface ;
A scribe head comprising: a holder bracket that passes through a through hole of the bottom plate and connects a portion of the lower surface of the slider closer to the rear surface and a flange of the holder flange .

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