JP4257069B2 - Scribing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scribing apparatus that forms a marking line for cutting on a glass substrate before cutting the glass substrate.
[0002]
[Prior art]
In recent years, with the progress of portability of devices equipped with liquid crystal display panels, it has become necessary to attach a display screen that is as large as possible within a small-sized housing. In addition, it is essential to narrow the portion other than the screen display. For example, mobile phones typified by mobile devices are extremely popular, and in the production of liquid crystal display panels for mobile phones, a layout in which as many products as possible can be obtained from a single substrate in consideration of mass productivity. Design is required.
[0003]
For example, since it is unavoidable to cut off an extra cut-off between products arranged next to each other on a single substrate, in this design, it is necessary to divide them by cutting lines. However, the lead lines for sending image signals to the liquid crystal display panel must also be installed in a narrow housing with almost no gaps. It becomes difficult. Even if the bonding is possible, there is a high possibility of disconnection due to contact with the liquid crystal display panel.
[0004]
FIGS. 6A and 6B are diagrams for explaining an example of a conventional scribing apparatus. Conventionally, this type of scribing apparatus includes, for example, as shown in FIG. 6A, a head mounting component 31 that travels in the direction of an arrow, and a head 33 that is mounted on the head mounting component 31 via a shaft 35. A scribing blade 32 attached to the head 33 is provided. The scribing device also has a so-called swing mechanism 34 that allows the head 33 to turn about a shaft 35.
[0005]
When the cutting edge 32 enters the end of the glass substrate 37, the angle formed by the cutting edge 32 and the end of the glass substrate 37 is not necessarily vertical. In other words, as shown in FIG. The traveling shaft 38 has a cutting edge 32 with a certain angle of entry α to try to get on the glass substrate 37. At this time, a component force perpendicular to the traveling shaft 38 acts on the disc-shaped blade edge 32, and as a result, the blade edge 32 is combined with the force that the blade edge 32 tries to run in the running direction and the component force. The marking line 36 formed on the parallel glass substrate 37 draws an arc on the entry side, and this component force is erased by the swinging mechanism 34 as the vehicle travels, and the orientation angle of the blade edge 32 is corrected to be excluded. A marking line parallel to is formed.
[0006]
If the swing mechanism 34 is not provided, it is assumed that the blade edge 32 is fixed to the head 33 and the head 33 is fixed to the head mounting part 31 as long as the direction of the blade edge 32 does not coincide with the running direction (actually). It is difficult to adjust the alignment to match the direction of the blade edge with the direction of travel.) The component force of the running force acts on the blade edge 32 in the direction transverse to the direction of travel, or the glass substrate breaks or a large arc-shaped marking line is formed. I will draw. In other words, the swing mechanism 34 functions to automatically align the direction of the blade edge 32.
[0007]
[Problems to be solved by the invention]
FIGS. 7A and 7B are diagrams for explaining the problems of the conventional scribing apparatus. In the conventional scribing device described above, the marking line from the blade tip entry portion is drawn in an arc shape and is corrected to a straight line parallel to the strike axis as shown in FIG. The external positions of the product a and the product b are distinguished by this marking line. However, when the glass substrate is cut along the marking line in the subsequent process, the outer dimension of the product a including the arc portion is large as shown in FIG. The product b is cut to have a smaller size. This has the problem that both product a and product b become defective.
[0008]
In particular, it is difficult to take out a large number of small image display panel products from a single large substrate having no cut-out portions, such as an image display panel of a portable device, with the outline accuracy of a conventional scribe device.
[0009]
Accordingly, an object of the present invention is to provide a scribing device that can accurately draw a marking line on the outer shape of an image display panel without providing an excessive cut-off portion.
[0010]
[Means for Solving the Problems]
The features of the present invention are: a mounting table for mounting a glass substrate; an attachment member that runs in one direction on the glass substrate; a bearing base that is attached to the mounting member; and a rotation that is rotatably attached to the bearing base. An angle correction roller which is lowered by a shaft, a head fixed to both ends of the rotating shaft and attached so as to be able to turn around the rotating shaft, and a vertical guide mechanism attached to the front stage in the running direction of the head to press the glass substrate And a blade edge member which is disposed downstream of the angle correction roller and is attached to the head via another vertical guide mechanism, and which contacts the glass substrate and draws a marking line on the glass substrate as the mounting member runs. , and a pressure setting mechanism for setting the cut pressure of the cutting edge member to the glass substrate, the angle correction b - la, when provided behind the axis of the rotary shaft toward the head running direction On the cutting edge member, the angle correction b - a scribing apparatus which is fixed to the head behind the collinear la.
[0011]
It is desirable that a spring member for applying a pressing force to the angle correction roller is provided. Furthermore, it is desirable that the blade edge member has a disk shape. Preferably, the pressure setting mechanism includes an air cylinder that applies a pressing force to the blade member and a pressure control valve that sets a pressure of compressed air supplied to the air cylinder. In this case, it is desirable to provide a spring member that pulls up the blade edge member.
[0012]
Other features of the present invention are: a mounting table for mounting a glass substrate; a mounting member that runs in one direction on the glass substrate; a bearing base that is mounted on the mounting member; and a mounting base that is rotatable on the bearing base. Angle correction by lowering and pressing the glass substrate by a rotating shaft, a head fixed to both ends of the rotating shaft and attached so as to be pivotable about the rotating shaft, and a vertical guide mechanism attached to the front stage in the running direction of the head A blade and a blade edge that is disposed downstream of the angle correction roller and is attached to the head via another vertical guide mechanism, and is in contact with the glass substrate and draws a marking line on the glass substrate as the mounting member runs. a member, and the pressure setting mechanism for setting the cut pressure of the cutting edge member to the glass substrate, the cutting edge of the blade member is angle correction b before drawing a marking line - after being corrected by La, the head does not pivot And the angle correction roller is provided behind the axis of the rotation shaft in the head running direction, and the cutting edge member is collinear with the angle correction roller. a scribing device fixed to the head behind.
[0013]
The fixing means preferably includes a chuck for fixing a plate extending from the rotating shaft. Furthermore, it is desirable to provide an air cylinder that moves the angle correction roller up and down.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described with reference to the drawings.
[0015]
FIG. 1 is a diagram showing a configuration of a head portion of a scribing apparatus according to an embodiment of the present invention. As shown in FIG. 1, the scribing device includes a mounting table 15 on which a glass substrate 20 is mounted, an attachment member 14 that runs on the glass substrate 20 in the direction of the arrow, and a bearing 12 that is attached to the attachment member 14 on both sides. The bearing base 17 is provided with a round shaft 11 that can be supported and rotated, the head 4 that is fixed to both ends of the round shaft 11 and that can be turned around the round shaft 11, and the head 4 is attached to the glass substrate 20 side. An angle correction roller 7 that is lowered by the LM guide 9 and presses the glass substrate 20 and is fixed to the roller attachment component 8, and an LM guide 3 that is disposed at the rear stage of the angle correction roller 7 and is attached to the head 4. A cutting edge mounting component 2 that is guided up and down by the above, a cutting edge 1 that is mounted at the tip of the cutting edge mounting component 2, and an air cylinder 6 that applies a pressing force to the cutting edge 1. .
[0016]
In the swing mechanism 13, the plate-like heads 4 fixed to both ends of the round shaft 11 protruding from both ends of the bearing base 17 in the notch 16 can be swung in a gap with the mounting member 14. Therefore, the correction angle of the angle correction roller 7 is determined by the gap between the head 4 and the mounting part 14. It is desirable to design the gap according to the maximum entry angle of the angle correction roller 7. On the other hand, the main body of the blade edge 1 has a disk shape, and a plurality of diamond particles are embedded in the outer circle portion that is the blade edge 1. As the main body of the cutting edge 1 rotates, a new cutting edge always comes into contact with the glass substrate to form a marking line.
[0017]
The LM guides 3 and 9 are generally commercially available. The LM guide has a structure having a guide groove fixed to the surface of the head 4 and a structure in which the movable body can be slid into the guide groove. Moreover, this sliding uses rolling friction with little friction. Structurally, there are many small-diameter balls on the groove surface of the guide groove, and these balls circulate on the guide surface when sliding to facilitate the movement of the moving body.
[0018]
The angle correction roller 7 can be moved up and down to the LM guide 9 via the roller mounting part 8. However, when the glass substrate 20 is pressed, the angle correction roller 7 is always angled even if there is a wave on the surface of the glass substrate 20. -It is desirable to provide the spring 10 which presses the angle correction roller 7 so that the roller 7 contacts the glass substrate 20.
[0019]
On the other hand, an air cylinder 6 that applies a pressing force to the blade edge 1 that subsequently enters the glass substrate 20 from the angle correction roller 7 is attached to the upper surface of the head 4 and is connected to the compressed air supply port via a flexible hose. The solenoid valve and pressure control valve are connected. The biting pressure of the blade edge 1 into the glass substrate 20 is set by adjusting the pressure control valve. Further, while the scribing operation is not performed, it is desirable that the compressed air to the air cylinder 6 is extracted and the blade edge 1 is lifted by the pull spring 5 and retracted into the head 4 so that the blade edge 1 does not hit the other.
[0020]
2 (a) to 2 (c) are diagrams showing an operation sequence for explaining the operation of the scribing apparatus of FIG. First, the state of FIG. 2A is a state before drawing a marking line on the glass substrate 20. The directions of the angle correction roller 7 and the blade edge 1 are not restricted by the swing mechanism and are in any direction.
[0021]
Next, as shown in FIG. 2B, the head 4 runs and the angle correction roller 7 enters the glass substrate 20. At this time, the angle correction roller 7 receives a component force in the lateral direction with respect to the running direction corresponding to the entry angle, the head 4 turns in the direction of the arrow, the entry angle is corrected, and the direction of the angle correction roller 7 is , Corrected to the direction parallel to the strike direction. At this time, since the blade edge 1 is fixed to the head 4, it is in the same direction as the angle correction roller 7. And as shown in FIG.2 (c), the direction of the angle correction roller 7 and the blade edge | tip 1 runs on a glass substrate, keeping parallel to a running direction. The cutting edge 1 to which the pressing force is applied from the air cylinder 6 bites into the glass substrate 20, and a marking line is formed with the running direction.
[0022]
FIGS. 3A and 3B are diagrams illustrating an example in which a scribing device in FIG. 1 is used to mark a glass substrate and the glass substrate is cut along the marking line. As described above, a scribing device having a swing mechanism for correcting the entry angle of the angle correction roller was used to draw a marking line on the sample shown in FIG. As a result, it can be drawn in line with the running line from the cutting edge entry part of the cut off part of the marking line, and can be divided and cut into two adjacent liquid crystal display panels, product a and product b, and the outer shape after cutting is not recessed or chipped It showed precise linearity.
[0023]
In addition, in order to cut out product (1), product (2), product (3), and product n from the long substrate without cutting allowance shown in FIG. Was divided in the subsequent cutting step, and products {circle around (1)}, {circle around (2)}, {circle over (3)}, and {circle around (3)} were obtained that were precisely divided according to the outer dimensions.
[0024]
FIG. 4 is a diagram showing a configuration of a head portion of a scribing apparatus according to another embodiment of the present invention. As shown in FIG. 4, the scribing device extends from the round shaft 11 so that the round shaft 11 of the swing mechanism 13 does not rotate after the angle of entry of the angle correction roller 7 is corrected by the swing mechanism 13. An air-operated chuck 19 for fixing the plate 18 is provided. Further, an air cylinder 10a for forcibly raising and lowering the angle correction roller is provided.
[0025]
Other blade edge 1, blade edge mounting part 2, LM guides 3 and 9, head 4, tension spring 5, air cylinder 6, angle correction roller 7, roller mounting part, round shaft 11, bearing 12, swing mechanism 13, the mounting member 14 and the bearing stand are the same as the components described in the above embodiment. Accordingly, the same reference numerals are used.
[0026]
FIGS. 5A to 5B are diagrams showing the operation order for explaining the operation of the scribing apparatus of FIG. Next, the operation of this scribing apparatus will be described. First, as shown in FIG. 5 (a), a pseudo stage 15a is disposed in front of the mounting table 15 on which the glass substrate 20 is mounted. Next, the angle correction roller 7 is lowered by the air cylinder 10a and pressed against the surface of the pseudo stage 15a. In this state, the head is moved in the direction of the arrow. By this operation, the angle correction roller 7 enters the pseudo stage 15a, receives the lateral component force, rotates the round shaft of the swing mechanism, and turns the head holding the blade edge 1 in any direction. Then, the entry angle of the blade edge 1 is corrected, and the direction of the blade edge 1 coincides with the running direction.
[0027]
Next, as shown in FIG. 5B, a plate 18 extending from the round shaft 11 is sandwiched and fixed by an air-operated chuck 19 and fixed so that the round shaft 11 does not rotate. That is, the direction of the blade edge is fixed by this. Next, as shown in FIG. 5C, the air cylinder 10 a is actuated to raise the angle correction roller 7, and the head 4 is moved to form a marking line on the glass substrate 20 on the mounting table 15.
[0028]
Thus, before drawing the marking line, if the direction of the blade edge is corrected and fixed so that the blade edge does not move and run, many liquid crystal display panels can be taken out even if there is no disposable fee. In this embodiment, the turning shaft of the swing mechanism is fixed and the direction of the blade edge is fixed, but the head to which the blade edge is attached may be fixed.
[0029]
【The invention's effect】
As described above, the present invention provides a marking line that forms the outer shape of the substrate without providing a cutting margin by providing means for aligning the direction of the cutting edge with the running axis before the cutting edge enters the object to be marked. It can be drawn and has the effect of contributing to mass productivity.
[0030]
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a head unit of a scribing apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram showing an operation order for explaining the operation of the scribing apparatus of FIG. 1;
FIG. 3 is a diagram for explaining an example in which a scribing line in FIG. 1 is used to mark a glass substrate and the glass substrate is cut along the marking line.
FIG. 4 is a diagram showing a configuration of a head unit of a scribing apparatus according to another embodiment of the present invention.
FIG. 5 is a diagram showing an operation sequence for explaining the operation of the scribing apparatus of FIG. 4;
FIG. 6 is a diagram for explaining an example of a conventional scribing apparatus.
FIG. 7 is a diagram for explaining a problem of a conventional scribing apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cutting edge 2 Cutting edge attachment component 3,9 LM guide 4 Head 5 Pulling spring 6,10a Air cylinder 7 Angle correction roller 8 Roller attachment component 10 Spring 11 Round shaft 12 Bearing 13 Swing mechanism 14 Mounting member 15 Mounting base 17 Bearing stand 18 Plate 19 Chuck

Claims (8)

  A mounting table for mounting the glass substrate, an attachment member that runs in one direction on the glass substrate, a bearing base that is attached to the mounting member, a rotary shaft that is rotatably attached to the bearing base, and the rotary shaft A head fixed to both ends of the head and attached so as to be rotatable about a rotation axis; an angle correction roller that descends and presses the glass substrate by a vertical guide mechanism attached to the front stage in the direction of travel of the head; and the angle correction A blade edge member disposed behind the roller and attached to the head via another vertical guide mechanism, and in contact with the glass substrate to draw a marking line on the glass substrate as the mounting member runs, and a blade edge member on the glass substrate A pressure setting mechanism for setting the cutting pressure of the blade, and the angle correction roller is provided behind the axis of the rotation shaft in the head traveling direction, and the blade edge portion The angle correction Russia - scribing apparatus characterized by being fixed to the head behind the collinear la.   The scribing apparatus according to claim 1, further comprising a spring member that applies a pressing force to the angle correction roller.   The scribing apparatus according to claim 1, wherein the blade edge member has a disk shape. The said pressure setting mechanism is provided with the air cylinder which gives a pressing force to the said blade member, and the pressure control valve which sets the pressure of the compressed air supplied to an air cylinder, The claim 1 or Claim 2 characterized by the above-mentioned. Item 4. The scribing device according to item 3.   The scribing apparatus according to claim 4, further comprising a return spring member that pulls up the blade edge member.   A mounting table for mounting the glass substrate, an attachment member that runs in one direction on the glass substrate, a bearing base that is attached to the mounting member, a rotary shaft that is rotatably attached to the bearing base, and the rotary shaft A head fixed to both ends of the head and attached so as to be rotatable about a rotation axis; an angle correction roller that descends and presses the glass substrate by a vertical guide mechanism attached to the front stage in the direction of travel of the head; and the angle correction A blade edge member disposed behind the roller and attached to the head via another vertical guide mechanism, and in contact with the glass substrate to draw a marking line on the glass substrate as the mounting member runs, and a blade edge member on the glass substrate A pressure setting mechanism that sets the cutting pressure of the blade and a fixed hand that fixes the head so that the head does not turn after the blade edge of the blade edge member has been corrected by the angle correction roller before drawing the marking line. The angle correction roller is provided behind the axis of the rotary shaft in the head traveling direction, and the blade edge member is attached to the head at the rear on the same line of the angle correction roller. A scribing device characterized by being fixed.   The scribing apparatus according to claim 6, wherein the fixing means includes a chuck for fixing a plate extending from the rotating shaft.   The scribing apparatus according to claim 6 or 7, further comprising an air cylinder for moving the angle correction roller up and down.

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