JP2005082413A - Scribing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scribing apparatus in which the hindrance of rotation of a blade caused by the accumulation of chips or the shortening of the life of the blade or the like are prevented. <P>SOLUTION: The blade 8 is pressed onto the surface of a glass plate G at a prescribed pressing force by controlling the protrusion amount of a cylinder shaft 15 by selecting air pressure to an air cylinder 14, and air is blown in the blade 8 advancing direction side to the center of the blade 8 from air blowing port 22 of a holder 7 through an air supplying tube 11 and an internal air blow passage 12, and at the same time, air is blown toward a line connecting the rotation center of the blade 8 and the contact point of the blade 8 and the glass plate G from the advancing direction side of the blade 8 though an external air blow tube 17. Under such conditions, the glass plate G is cut by horizontally moving the head main body 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a scribing apparatus, and more particularly to a scribing apparatus that cuts an object by pressing a rotatable blade against the surface of the object to be cut such as a glass plate.

  Conventionally, a scribing device is known as a device for cutting a glass plate or the like. A scribing head is disposed horizontally above a table on which a glass plate to be cut is placed, and a holder for rotatably holding a disk-like blade is attached to the lower part of the scribing head. ing. The holder is moved up and down with respect to the scribe head by an air cylinder or the like. By adjusting the air pressure to the air cylinder, the blade is pressed against the surface of the glass plate with a predetermined pressing force, and the scriber is driven by a motor. The glass plate is cut by moving the head in the horizontal direction.

  Glass chips are generated during such cutting, but if the chips enter the gap between the blade and the holder and accumulate, the rotation of the blade may be hindered, making it impossible to perform desired cutting. In addition, the blade rotates around the pin, and there is a life due to wear of the blade and the pin, etc., but the wear of the blade and pin, and the holder is further accelerated by the glass chips accumulated in the gap between the blade and the holder Therefore, there is a problem that the life of these parts is shortened and the replacement frequency is increased.

  For this reason, for example, Patent Document 1 discloses a scribing apparatus for rotating and holding a blade in a concave portion of a holder and forming an air blowing hole having an opening in the concave portion in the holder, and cutting while blowing compressed air into the concave portion. A holder is disclosed. By blowing the compressed air, accumulation of chips in the concave portion of the holder is prevented.

JP 2000-247667 A

However, the glass chips blown off from the concave portion of the holder by blowing the compressed air soars around the holder and then lands on the surface of the glass plate again. Chips also exist on the glass plate and may enter the gap between the blade and the holder.
Further, the holder of Patent Document 1 is attached to the scribe head so as to be rotatable in a horizontal plane, and is configured to improve the straightness of the blade by swinging when the scribe head is moved. As a result, there is a possibility that the swarf that has risen around the holder due to the spraying will accumulate between the holder and the scribe head and hinder the rotation of the holder.

  The present invention has been made to solve such problems, and provides a scribing device that can prevent the rotation of the blade due to the accumulation of chips and the shortening of the life of the blade and the like. Objective.

  The scribing apparatus according to the present invention is a scribing apparatus for cutting a workpiece by pressing and moving the rotatable blade against the surface of the workpiece. The scribing device holds the blade rotatably and holds the blade against the center of the blade. A holder formed with an air blowing port for blowing air to the traveling direction side, a scribe head for holding the holder, a pressing means for applying a pressing force to the blade through the scribe head, and a traveling direction of the blade relative to the holder An external air blow pipe for blowing air from the side toward the line connecting the rotation center of the blade and the contact point of the blade and the work piece, and the blade advances while blowing air from the air blowing port of the holder and the external air blow pipe It is something to be made.

  The scribing head has a head body that holds the holder in the horizontal direction under the scribe head, a head body that passes through the head body in the vertical direction, a lower end that communicates with the air blowing port of the holder, and an upper end that connects to the air supply tube. And a pressure receiving member that is fixed to the upper portion of the head main body and that receives a pressing force from the pressing means. Alternatively, the holder can be fixedly held at the lower part of the scribe head, and an air supply tube for supplying air to the air blowing port of the holder can be directly connected to the holder.

According to the present invention, the air blowing port is formed in the holder that rotatably holds the blade, and air is blown toward the moving direction side of the blade with respect to the center of the blade, and the moving direction side of the blade is more than the holder by the external air blow tube. Since the blade is advanced while blowing air toward the line connecting the rotation center of the blade and the contact point between the blade and the workpiece, the rotation of the blade due to the accumulation of chips and the shortness of the blade, etc. Lifespan can be prevented.
The scribing head includes a head main body that rotatably holds the holder at a lower portion thereof, an interior in which the lower end communicates with the air blowing port of the holder and the upper end is connected to the air supply tube. If the air blow passage and the pressure receiving member fixed to the upper portion of the head body and receiving the pressing force from the pressing means are included, the holder can be swung to improve the straightness of the blade. It becomes possible.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 1 shows a main part of a scribing apparatus according to Embodiment 1 of the present invention. The scribe head 1 has a head body 2. The head main body 2 is held by an LM guide and a motor (not shown) so as to be movable in a horizontal direction, particularly in a traveling direction indicated by an arrow in FIG. A head shaft 3 is disposed in the head body 2 in the vertical direction and is supported by a bearing 4 so as to be rotatable about the shaft. A holder base 5 is detachably attached to the lower end of the head shaft 3 by a knurling 6, a holder 7 is screwed to the holder base 5, and a disk-like blade 8 is rotatably held by the holder 7. Yes.

  A rotary one-touch joint 10 is fixed to the upper end of the head shaft 3 via a head shaft mounting boss 9, and an air supply tube 11 is connected to the joint 10. A through hole is formed on the central axis of the head shaft 3, and through holes are also formed in the holder base 5, the knurl 6, the holder 7, the head shaft mounting boss 9 and the joint 10, respectively. An internal air blow passage 12 is formed in communication with each other.

  A support column 13 extending upward is fixed to the head body 2. A cylinder shaft 15 of the air cylinder 14 protrudes downward and is positioned on a cylinder bearing member 16 formed on the upper portion of the head body 2. Even if the internal air blow passage 12 is formed on the head shaft 3 and the rotary one-touch joint 10 is connected, no special mechanism is required to apply pressure to the head shaft 3 in the axial direction. Can be applied. The position of the air cylinder 14 is set so that the cylinder shaft 15 is positioned on an extension line of the central axis of the head shaft 3. The cylinder bearing member 16 forms the pressure receiving member of the present invention. The cylinder bearing member 16 extends upward from the side of the joint 10 so as not to hinder the rotational operation of the joint 10, and the center of the head shaft 3 is located above the joint 10. It extends horizontally to the axis.

Further, an external air blow pipe 17 extends toward the line connecting the rotation center of the blade 8 and the contact point of the blade 8 and the object to be cut, closer to the traveling direction side of the blade 8 than the holder 7.
A compressed air supply source (not shown) is connected to the external air blow pipe 17, the air supply tube 11, and the air cylinder 14, respectively.

  Here, the structure of the holder 7 is shown in FIG. A groove 18 is formed along the longitudinal direction of the lower portion of the holder 7, and a disk-shaped blade 8 is held in the groove 18. The blade 8 is rotatably held by a pin 19 so that a part of the outer peripheral portion protrudes downward from the lower end portion of the holder 7, and the pin retaining plate 20 is screwed to the side surface of the holder 7. It is configured. A through hole 21 forming a part of the internal air blow passage 12 is formed in the holder 7, and the lower end thereof is positioned on the moving direction side of the blade 8 with respect to the blade 8 so as to open into the groove 18 as an air blowing port 22. ing. Further, a hole 23 for screwing to the holder base 5 is formed in a side portion of the holder 7.

Next, the operation of the first embodiment will be described. First, by selecting the air pressure from a compressed air supply source (not shown) to the air cylinder 14, the protruding amount of the cylinder shaft 15 is adjusted, and the cylinder bearing member 16, the head body 2, the holder base 5 and the holder 7 are passed through. The blade 8 is pressed against the surface of the glass plate G with a predetermined pressing force. Further, air is blown from the compressed air supply source (not shown) through the air supply tube 11 and the internal air blow passage 12 from the air blowing port 22 of the holder 7 toward the center of the blade 8 toward the moving direction of the blade 8 and the external air blow pipe 17. Then, air is blown toward the line connecting the rotation center of the blade 8 and the contact point of the blade 8 and the glass plate G from the traveling direction side of the blade 8. The air blowing from the air blowing port 22 and the air blowing from the external air blow pipe 17 were both performed at an air pressure of ^{2 to} 5 kg / cm ² , and the air flow rate was appropriately adjusted by an air speed controller according to the situation. . In this state, the glass body G is cut by moving the head body 2 in the horizontal direction by a motor (not shown).

  At this time, since the head shaft 3 is rotatably supported by the bearing 4, the holder 7 fixed to the lower end of the head shaft 3 via the holder base 5 is also rotatable around the central axis of the head shaft 3. The blade 8 moves with excellent straightness. Also, an internal air blow passage 12 is formed on the extension line of the central axis of the head shaft 3 by through holes formed in the holder base 5, knurl 6, holder 7, head shaft mounting boss 9, and joint 10, respectively. Since a rotary one-touch type joint is used for the joint 10 to which the two are connected, a smooth swing operation is ensured.

  As the glass plate G is cut, swarf is generated from the surface of the glass plate G. Air is blown from the air blowing port 22 of the holder 7 toward the traveling direction of the blade 8 and the external air blow tube 17 cuts the blade 8. Since air is blown from the traveling direction side of the blade 8 toward the line connecting the rotation center of the blade 8 and the contact point of the blade 8 and the glass plate G, the chips are opposite to the traveling direction of the blade 8, that is, backward. Blown away. For this reason, it is effectively prevented that the chips accumulate between the holder 7 and the blade 8 and prevent the blade 8 from rotating, or accumulate around the head shaft 3 and the bearing 4 to prevent the swinging operation of the holder 7. The

Embodiment 2. FIG.
FIG. 3 shows a main part of a scribing apparatus according to Embodiment 2 of the present invention. This scribing apparatus is the apparatus of the first embodiment shown in FIG. 1 in which the holder 7 is fixedly held without swinging. A holder base 5 is detachably attached to a lower portion of the head body 24 by a knurl 6, a holder 25 is screwed to the holder base 5, and a disk-shaped blade 8 is rotatably held by the holder 25. . An air supply tube 11 for blowing air is connected to the holder 25. In addition, a cylinder bearing member 26 protrudes from the upper portion of the head body 24, and the cylinder shaft 15 is positioned on the cylinder bearing member 26.

  Here, the structure of the holder 25 is shown in FIG. A groove 18 is formed along the longitudinal direction of the lower portion of the holder 25, and a disk-shaped blade 8 is held in the groove 18. The blade 8 is rotatably held by a pin 19 so that a part of the outer peripheral portion protrudes downward from the lower end portion of the holder 25, and the pin retaining plate 20 is screwed to the side surface of the holder 25. It is configured. In the holder 25, a through hole 28 whose lower end is opened as an air blowing port 27 in the groove 18 is formed obliquely, whereby air can be blown toward the moving direction side of the blade 8 with respect to the center of the blade 8. It is configured as follows. The air supply tube 11 is connected to the through hole 28. Further, a hole 23 for screwing to the holder base 5 is formed in a side portion of the holder 25.

  The operation of the second embodiment is the same as the operation of the first embodiment described above. By selecting the air pressure from a compressed air supply source (not shown) to the air cylinder 14, the protruding amount of the cylinder shaft 15 is adjusted and the blade 8 is pressed against the surface of the glass plate G with a predetermined pressing force. Further, air is blown from the compressed air supply source (not shown) through the air supply tube 11 to the moving direction side of the blade 8 from the air blowing port 27 of the holder 25 and the blade 8 is moved from the moving direction side of the blade 8 through the external air blow pipe 17. Air is blown toward a line connecting the rotation center of 8 and the blade 8 and the contact point of the glass plate G. In this state, the glass sheet G is cut by moving the head body 24 in the horizontal direction by a motor (not shown).

  As the glass plate G is cut, chips are generated from the surface of the glass plate G. Air is blown from the air blowing port 27 of the holder 25 to the traveling direction side of the blade 8 and the blade 8 is blown by the external air blow tube 17. Since air is blown from the traveling direction side toward the line connecting the rotation center of the blade 8 and the contact point of the blade 8 and the glass plate G, the chips are blown backward. For this reason, it is effectively prevented that the chips accumulate between the holder 25 and the blade 8 and prevent the blade 8 from rotating.

  Since the device accuracy is high, the second embodiment is suitable for a scribing device that can maintain straightness of the blade 8 without performing a swinging motion. Since the air supply tube 11 is directly connected to the holder 25 fixedly held at the lower part of the head body 24, the rotary one-touch joint as in the first embodiment is not necessary.

In addition, it is preferable that the holder 7 of Embodiment 1 and the holder 25 of Embodiment 2 are each integrally processed in consideration of prevention of efficiency reduction due to air leakage and workability.
In the first and second embodiments, the air cylinder 14 is used as the pressing means. However, the invention is not limited to this, and other means such as a motor may be used.
Furthermore, although the glass plate G was made into the object as a to-be-cut object, it is not restricted to this, This invention is applicable to the cutting | disconnection of various raw materials other than glass.

It is sectional drawing which shows the principal part of the scribing apparatus which concerns on Embodiment 1 of this invention. The holder used in Embodiment 1 is shown, (a) is a side view, (b) is a front view. FIG. 6 is a cross-sectional view showing a main part of a scribing device according to a second embodiment. The holder used in Embodiment 2 is shown, (a) is a side view, (b) is a front view.

Explanation of symbols

  1 Scribe head, 2,24 Head body, 3 Head shaft, 4 Bearing, 5 Holder base, 6 Knurl, 7, 25 Holder, 8 blades, 9 Head shaft mounting boss, 10 Rotary one-touch joint, 11 Air supply tube, 12 Inside Air blow passage, 13 Support column, 14 Air cylinder, 15 Cylinder shaft, 16, 26 Cylinder bearing member, 17 External air blow pipe, 18 groove, 19 pin, 20 pin retaining plate, 21, 28 through hole, 22, 27 Air blowing Mouth, 23 holes, G glass plate.

Claims (3)

In a scribing device that cuts the workpiece by moving the blade while pressing a rotatable blade on the surface of the workpiece,
A holder formed with an air blowing port for holding the blade in a rotatable manner and blowing air toward the advancing direction side of the blade with respect to the center of the blade;
A scribe head for holding the holder;
A pressing means for applying a pressing force to the blade through the scribe head;
An external air blow pipe for blowing air from the advancing direction side of the blade toward the line connecting the rotation center of the blade and the contact point of the blade and the workpiece from the holder, and the air blowing port of the holder and the external A scribing device that advances a blade while blowing air from an air blow tube. The scribe head is
A head main body that rotatably holds the holder in a horizontal direction at a lower portion thereof;
An internal air blow passage that penetrates the head body in the vertical direction and has a lower end communicating with an air blowing port of the holder and an upper end connected to an air supply tube;
The scribing device according to claim 1, further comprising: a pressure receiving member fixed to an upper portion of the head main body and receiving a pressing force from the pressing means. The holder is fixedly held at the bottom of the scribe head,
The scribing device according to claim 1, wherein an air supply tube for supplying air to an air blowing port of the holder is connected to the holder.

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