JP6875719B2 - Scribe head rotating device for board cutting - Google Patents

Description

The present invention relates to a substrate cutting scribe head rotating device used to determine the traveling direction of a scribe head forming a scribe line on a brittle substrate.

Conventionally, when cutting a brittle substrate including a glass substrate to a required size, a cutting device provided with a cutting wheel has been used. In such a cutting device, the cutting wheel is run while being pressed against the surface of the substrate while applying a load to form a scribe line on the surface of the substrate. After the scribe line is formed, bending stress is applied to the scribe line to divide the substrate.

On the other hand, the cutting wheel rolls with respect to the substrate in a state of being connected to the lower end of the scribe head by a pin, and the traveling direction of the cutting wheel is determined by the axial rotation of the scribe head. That is, the traveling direction of the cutting wheel is changed by rotating the scribe head around the axis.

For example, in order to bend the traveling path of the cutting wheel traveling in the X direction by 90 degrees, it is necessary to rotate the scribe head by 90 degrees.

On the other hand, Korean Registered Patent Publication No. 10-1528905 discloses a scribe head with a swivel mechanism. The scribe head with a swivel mechanism includes a swivel mechanism for changing the traveling direction of the cutter wheel to a predetermined direction.

However, the scribe head with a swivel mechanism has a drawback that its structure is complicated and there are many components. Complexity and many parts lead to a heavy weight. If the weight is heavy, the agility of movement decreases, and there is a limit to increasing the working speed due to the influence of inertial force.

The present invention was created to solve the above-mentioned problems, and is provided with a dedicated motor for axially rotating the scribe head, and is excellent in operation accuracy and agility, so that an accurate scribe line can be performed at high speed. It is an object of the present invention to provide a scribe head rotating device for substrate cutting, which can be formed, can greatly improve work efficiency, has a simple overall structure, and is easy to maintain.

The scribe head rotating device for substrate cutting of the present invention for achieving the above object is supported by the main body, a vertical guider fixed to the main body and providing a vertical guide path, and the vertical guider so as to be able to move up and down. An elevating part having a scribing head at its lower portion, an elevating means for vertically moving the elevating part, and a scribe that is pushed downward when the elevating part is elastically supported by the elevating part. It is characterized by including a head operating motor that moves to the head side and a motor pressurizing portion that pressurizes the head operating motor downward to the scribe head side.

The elevating means includes an upper motor supported by the main body and a lead screw which is axially rotated by the upper motor and is vertically arranged vertically above the head operating motor. The portions are fixed to the screw coupling portion, which is screwed into the lead screw and moves up and down according to the shaft rotation of the lead screw, and a part thereof is slidably supported by the vertical guider. It is characterized by including a motor support portion that supports the head operating motor so as to be able to move up and down.

Further, the motor pressurizing portion is located at a rotating disc fixed to the lower end portion of the lead screw and having an accommodating groove opened at the lower portion, and a part thereof accommodating the rotating disc. It can rotate while being sandwiched inside the groove, and is characterized by including a pressurizing disc that pressurizes the head operating motor downward when descending.

At the same time, the head actuating motor has a motor shaft that is elastically supported upward by elastic means while being supported by the elevating portion and extends vertically below, and the head actuating at the upper end portion of the scribing head. It is characterized in that a torque transmission groove is formed which accommodates the lower end portion of the motor shaft and transmits rotational torque from the motor shaft when the motor is lowered.

Further, the motor shaft and the torque transmission groove have a polygonal structure, and the inner surface of the torque transmission groove is separated from the motor shaft in a state where the motor shaft is inserted into the torque transmission groove. It is characterized by having a size that can be used.

A sensor for detecting the angle of the scribe head is provided around the scribe head.

The scribe head rotating device for cutting a substrate of the present invention configured as described above is provided with a dedicated motor for axially rotating the scribe head, and is excellent in operation accuracy and agility, so that an accurate scribe line can be performed at high speed. It can be formed with, in particular, can travel very precisely and quickly on a path bent at a right angle, has excellent work quality and efficiency, has a simple overall structure, and is easy to maintain.

FIG. 1 is a diagram for explaining a configuration of a scribe head rotating device for cutting a substrate according to an embodiment of the present invention. FIG. 2 is a partial perspective view showing the relative positions of the scribe head and the motor shaft shown in FIG. FIG. 3 is a diagram for explaining the operating characteristics of the motor shaft with respect to the scribe head shown in FIG. FIG. 4 is a diagram for explaining the operation of the substrate cutting scribe head rotating device shown in FIG.

Hereinafter, an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.
Basically, the substrate cutting scribe head rotating device 11 according to the present embodiment described later is a dedicated motor (head operating motor 35) for quickly and accurately rotating the scribe head 43 having a cutting wheel 45 at the lower end thereof. ) And peripheral elements for driving it.
The meaning that the scribe head 43 can rotate the axis quickly and accurately means that the traveling direction of the cutting wheel can be precisely controlled to form an accurate scribe line.

FIG. 1 is a diagram for explaining a configuration of a substrate cutting scribe head rotating device 11 according to an embodiment of the present invention.
Referring to FIG. 1, the substrate cutting scribe head rotating device 11 according to the present embodiment has a main body 13 that provides bearing capacity, and a guide path that is fixed to one side of the main body 13 and extends vertically. A vertical guider 25, an elevating holder 27 that is supported by the vertical guider 25 so as to be able to elevate, an upper motor 15 and a lead screw 17 that are located above the elevating holder 27 and move the elevating holder 27 in the vertical direction, and an elevating holder 27. Includes a scribe head 43 installed at the bottom of the scribe head 43 and a head actuating motor 35 installed above the scribe head 43 for axially rotating the scribe head 43.

First, the main body 13 is a part of a substrate cutting device (not shown) and has a support surface 13a perpendicular to the substrate A.
The vertical guider 25 is a linear guider fixed to the support surface 13a and extended vertically, and accommodates and supports a part of the motor support portion 31 which is a part of the elevating holder 27. The motor support portion 31 slides in the vertical direction while being supported by the vertical guider 25.

The elevating holder 27 has a block-shaped or plate-shaped screw coupling portion 29, a motor support portion 31 fixed to the end portion of the screw coupling portion 29 and extended to the lower portion, and a receiver located at the lower end portion of the motor support portion 31. Includes a bracket 33 and a cylindrical head holder 41 fixed to the bottom of the receiving bracket 33.

The elevating holder 27 moves up and down in the vertical direction by the operation of the upper motor 15 while being supported by the vertical guider 25, and adjusts the height of the scribe head 43 with respect to the substrate A. When the elevating holder 27 rises, the cutting wheel 45 rises away from the substrate A, and when it descends, the cutting wheel 45 pushes the substrate A.
The rest of the description for the elevating holder 27 will be described later.

The upper motor 15 is a servomotor located vertically above the elevating holder 27, and has a lead screw 17 on its drive shaft. The upper motor 15 is firmly fixed to the side of the main body 13 by the fixed arm 15a, generates rotational torque by electric power transmitted from the outside, and rotates the lead screw 17 clockwise and in the opposite direction. Let me.

The lead screw 17 is a vertical shaft having a female thread formed on its outer peripheral surface, and is screwed with the screw joint portion 29. The screw joint portion 29 moves up and down as the lead screw 17 rotates about its axis.

A rotating disc 19 and a pressure disc 21 are provided at the lower end of the lead screw 17. The rotating disc 19 and the pressurizing disc 21 serve as a pressurizing unit that presses the head operating motor 35 in the f direction of FIG. That is, as shown in FIG. 4, when the elevating holder 27 rises in the arrow D direction, it serves to pressurize the head operating motor 35 in the downward f direction.

As will be described later, the head operating motor 35 is pushed downward and lowered toward the scribe head 43, and the motor shaft 37 is inserted into the torque transmission groove (43a in FIG. 2) provided in the upper part of the scribe head 43. The scribe head 43 is rotated around the axis. The scribe head 43 rotates about the axis while the cutting wheel 45 is separated from the substrate A. When the scribe head 43 rotates about its axis, the traveling direction of the cutting wheel 45 is changed.

The rotating disc 19 is a disk-shaped member that is integrally fixed to the lower end of the lead screw 17 and rotates together with the lead screw 17 when the shaft rotates, and has an accommodating groove 19a opened at the lower portion. The accommodating groove 19a is a groove having a constant inner diameter, and has a step (without drawing reference numeral) on the inner peripheral surface thereof.

Further, the pressure disc 21 is a member that rotates around the shaft in a state where a part thereof is inserted and supported inside the accommodating groove 19a. For this reason, a locking step 21a is formed on the upper part of the pressure disc 21 so as to be supported by the step inside the accommodating groove 19a. The locking step 21a supports the pressure disc 21 so that it does not come off the rotating disc 19.

At the same time, a bearing 19b is provided below the locking step 21a. The bearing 19b acts so that the rotation of the pressure disc 21 with respect to the rotating disc 19 is smoothly realized.

On the other hand, the elevating holder 27 includes an internal space 27a, and has a head operating motor 35 in the internal space 27a. The head operating motor 35 is a servomotor that operates by an electric signal transmitted from the outside, and has a motor shaft 37 that extends vertically downward. The operation of the head operating motor 35 causes the motor shaft 37 to rotate.

The head operating motor 35 is surrounded by a motor cover 35a. The motor cover 35a is a member for indirectly supporting the head operating motor 35 by the motor support portion 31, extends in the horizontal direction, and is inserted into the vertical groove 31a.

The vertical groove 31a is a groove formed in the motor support portion 31 and extended vertically and opened to the head operating motor 35 side, and accommodates and supports the extended end portion of the motor cover 35a. The motor cover 35a can move up and down while being partially inserted into the vertical groove 31a.

A spring 39 is provided inside the vertical groove 31a. The spring 39 serves to support the motor cover 35a upward in a state of being interposed between the motor cover 35a and the receiving bracket 33.

By the action of the spring 39, the head actuating motor 35 is located at the top dead center allowed by the vertical groove 31a and waits for the pressure disc 21 to descend. The spring 39 is compressed when the pressurizing disc 21 pressurizes the head actuating motor 35 in the direction of arrow f, allowing the motor shaft 37 to be inserted into the torque transmission groove 43a.

When the pressing force of the pressurizing disk 21 is removed, the head operating motor 35 rises to top dead center due to the elastic restoring force of the spring 39 and is separated from the scribe head 43.

Reference numerals 33a and 35b are support projections that support the spring 39 and prevent the spring 39 from jumping out.

The head holder 41 is a cylindrical member fixed to the lower part of the receiving bracket 33, and supports the scribe head 43 inside the scribe head 43 so as to be rotatable around the axis. The central axis of the scribe head 43 coincides with the central axis of the motor shaft 37.

A large number of sensors 47 and 49 are arranged between the head holder 41 and the clive head 43. The sensors 47 and 49 serve to detect the rotation angle of the scribe head 43. The angle information sensed by the sensors 47 and 49 is transferred to an external controller (not shown) so that the controller executes the next operation corresponding to the angle information.

FIG. 2 is a partial perspective view showing the relative positions of the scribe head 43 shown in FIG. 1 and the motor shaft 37, and FIGS. 3a and 3b explain the operating characteristics of the motor shaft 37 with respect to the scribe head 43. It is a figure for.

As shown in the figure, a torque transmission groove 43a whose inward surface has a regular hexagonal shape is formed at the upper end of the scribe head 43. The torque transmission groove 43a is a groove in which a rotational force is transmitted from a motor shaft 37 that rotates in a clockwise direction or in the opposite direction.

The motor shaft 37 has a hexagonal rod shape and has a tapered portion 37a at the lower end. The tapered portion 37a is a portion that contracts toward the lower part. For example, when the motor shaft 37 is inserted into the torque transmission groove 43a, the motor shaft 37 is prevented from colliding with the edge portion of the torque transmission groove 43a. It is a thing.

As shown in FIG. 3a, there is a margin Z between the inner surface of the torque transmission groove 43a and the outer peripheral surface of the motor shaft 37.

The reason for setting the margin Z in this way is not only to realize the insertion of the motor shaft 37 into the torque transmission groove 43a more quickly and stably, but also to prevent wear due to friction. Of course, it can be manufactured so that the inner surface of the torque transmission groove 43a and the outer surface of the motor shaft 37 are in contact with each other, but in that case, the life of the motor shaft 37 and the torque transmission groove 43a is shortened due to severe wear. I may let you.

The margin interval Z is designed so that the angle of the motor shaft 37 can make line contact with the inner surface of the torque transmission groove 43a while the motor shaft 37 is rotated by an angle θ. The angle θ can be designed to be about 10 to 30 degrees.

Therefore, for example, if the scribe head 43 should be rotated by 90 degrees, the motor shaft 37 must be rotated by 90 degrees + θ.

FIG. 4 is a diagram for explaining the operation of the substrate cutting scribe head rotating device 11 shown in FIG.

In order to change the traveling direction of the cutting wheel 45 while forming a scribe line in a certain direction on the substrate A, as described above, after separating the cutting wheel 45 from the substrate A, the scribe head 43 must be axially rotated. Must be.

For such an operation, first, the upper motor 15 is driven to lift the elevating holder 27 in the direction of arrow D. At this time, it is natural that the head operating motor 35 also rises together.

If the elevating holder 27 is further raised while the head operating motor 35 has been raised to reach the bottom surface of the pressure disk 21, the head operating motor 35 cannot be raised any further, and only the elevating holder 27 and the scribe head 43 can be raised. To rise. Then, the distance between the head operating motor 35 and the scribe head 43 is narrowed, and the motor shaft 37 is eventually inserted into the torque transmission groove 43a.

When the motor shaft 37 is inserted into the torque transmission groove 43a, the upper motor 15 is stopped and the head operating motor 35 is driven to rotate the scribe head 43 in a desired direction.

When the shaft rotation of the scribe head 43 is completed, the upper motor 15 is driven again to lower the elevating holder 27. When the elevating holder 27 is lowered, the head operating motor 35 is separated from the pressurizing disk 21, and at the same time, the head operating motor 35 is moved to the top dead center by the elastic restoring force of the spring 39, and the scribe head 43. Is also separated.

When the lifting holder 27 is further lowered and the cutting wheel 45 reaches the substrate A, the scribe process is continued.

Although the present invention has been described in detail through specific examples, the present invention is not limited to the above-mentioned examples, and various modifications may be made by a person having ordinary knowledge within the scope of the technical idea of the present invention. It is possible.

11 Rotating device 13 Main body 13a Support surface 15 Upper motor 15a Fixed arm 17 Lead screw 19 Rotating disc 19a Storage groove 19b Bearing 21 Pressurizing disc 21a Locking step 25 Vertical guider 27 Elevating holder 27a Internal space 29 Screw joint 31 Motor support Part 31a Vertical groove 33 Receiving bracket 33a Support protrusion 35 Head operating motor 35a Motor cover 35b Support protrusion 37 Motor shaft 37a Tapered part 39 Spring 41 Head holder 43 Scribing head 43a Torque transmission groove 45 Cutting wheel 47, 49 Sensor

Claims (6)

Main body (13) and
With a vertical guider (25) fixed to the main body (13) and providing a vertical guide path,
An elevating part that is supported by the vertical guider (25) so as to be elevated and has a scribe head (43) below it,
An elevating means for vertically elevating the elevating part and
A head operating motor (35) that is pushed downward and moves to the scribe head (43) side when the elevating part is raised while being elastically supported by the elevating part.
A scribe head rotating device for cutting a substrate, which includes a motor pressurizing portion that pressurizes the head operating motor (35) downward toward the scribe head side. The elevating means
The upper motor (15) supported by the main body (13) and
It is axially rotated by the upper motor (15) and includes a reed screw (17) arranged vertically above the head operating motor (35).
The elevating part
A screw coupling portion (29) that is screwed into the reed screw (17) and moves up and down according to the shaft rotation of the reed screw (17).
Includes a motor support (31) that is fixed to the screw coupling (29), a portion of which is slidably supported by the vertical guider (25), and supports the head actuating motor (35) in an ascending / descending manner. The scribe head rotating device for cutting a substrate according to claim 1. The motor pressurizing part is
A rotating disc (19) fixed to the lower end of the lead screw (17) and having an accommodation groove (19a) opened at the lower end.
It is located below the rotating disc (19) and can rotate while being partially sandwiched inside the accommodating groove (19a) of the rotating disc (19), and when descending, the head operating motor (35) The scribe head rotating device for cutting a substrate according to claim 2 , further comprising a pressurizing disc (21) that pressurizes downward. The head operating motor (35)
While being supported by the elevating part, it is elastically supported upward by elastic means.
It has a motor shaft (37) that extends vertically downward,
The upper end of the scribing head (43) accommodates the lower end of the motor shaft (37) when the head operating motor (35) is lowered, and torque is transmitted from the motor shaft (37). The scribing head rotating device for cutting a substrate according to claim 2, wherein a transmission groove (43a) is formed. The motor shaft (37) and the torque transmission groove (43a) have a polygonal structure.
The torque transmission groove (43a) is characterized in that the inner side surface thereof has a size that can be separated from the motor shaft (37) in a state where the motor shaft (37) is inserted into the torque transmission groove (43a). The scribe head rotating device for cutting a substrate according to claim 4. The scribe head rotating device for substrate cutting according to claim 1, wherein a sensor (47,49) for detecting an angle of the scribe head (43) is provided around the scribe head (43). ..

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