JP2005225730A - Scribe head device for brittle material and method of scribing brittle material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scribe head device for a brittle material such as a glass plate which is capable of instantly and surely detecting the upper surface level of the brittle material without damaging the brittle material and in which a supporting structure of a cutter holder is simplified. <P>SOLUTION: In the device, the cutter holder 5 provided with a cutter wheel 1 is energized toward the objective brittle material 7 side by a pressing means 8 using air pressure. The pressing means 8 is moved up and down by a driving means 21 in a direction to move the cutter wheel 1 back and forth toward the objective brittle material 7 side. The pressing means 8 is supported by a scribe main body 14 to freely move the cutter wheel 1 back and forth toward the objective brittle material 7 side. The cutter holder 5 is connected to the pressing means 8 with a plate spring chip 24 and when the cutter wheel 1 moves downward and is brought into contact with the upper surface of the objective brittle material 7, the plate spring chip 24 is bent to detect the upper surface level of the objective brittle material 7 without damaging the objective brittle material 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fragile material scribing head device and a fragile material scribing method for forming a scribe line on the surface of a fragile material in order to cut the fragile material such as a glass plate. This relates to the setting of the level position for scribing.

  In order to cut a conventional glass plate, a scribe head device that forms a scribe line on the surface of the glass plate has a cutter holder with a cutter wheel rotatably attached to a pressure frame that is moved up and down by a piston in a vertical direction. A coil spring is disposed between the pressure frame that presses the cutter holder against the upper surface of the glass plate and the upper surface of the cutter wheel of the cutter holder, and the piston can be moved up and down. A configuration is adopted in which a cylindrical scribing body supported by the head is movably provided along the track in the scribing direction (see Patent Document 1).

  In the conventional scribing head device described above, when scribing on the upper surface of the glass plate, the scribing wheel can be scribed on the upper surface of the glass plate with the pressing force applied by the piston applied to the cutter holder via the coil spring. The main body is moved to form a scribe line on the upper surface of the glass plate. At this time, even if there is a recess on the upper surface of the glass plate, the urging force of the coil spring causes the cutter holder to turn downward, allowing the cutter wheel to follow the concave undulations on the surface of the glass plate, causing jumping. The scribe line can be engraved so that there is no.

However, in this configuration, when the cutter wheel is set at the upper surface level position of the glass plate, the piston is lowered to detect the upper surface level of the glass plate at the moment when the cutter wheel contacts the upper surface of the glass plate. It is conceivable that the cutter holder is rotated upward against the urging force of the coil spring, and the rotation of the cutter holder is detected to stop the lowering of the piston.
JP-A-10-158022

  The problem to be solved is that in the configuration in which the coil spring is stretched between the conventional cutter holder and the pressurizing frame that is lifted and lowered by the piston, the cutter wheel moves upward at the moment when the cutter wheel contacts the glass plate. In order to move, the cutter holder must rotate upward against the resistance of the shaft support with the pressurizing frame and the biasing force of the coil spring, and the cutter holder is pressed by the pressing force applied to the cutter wheel by the glass. A time difference occurs between the time when-rises against the air pressure applied to the piston, and it is difficult to set the level position of the cutter holder at the upper surface level of the glass plate with high accuracy. There were problems of chipping or cracking.

  Therefore, in order to be able to instantaneously detect and operate the upper surface level of the glass plate without damaging the glass plate, the lowering speed by the piston has to be slowed, the working efficiency becomes low, and the cutter The holder must be pivotally supported through a bearing and a coil spring must be mounted, which makes the structure complicated and expensive.

  The present invention has been made in view of the above problems, and can instantaneously and reliably detect the upper surface level of the fragile material without damaging the fragile material such as a glass plate. A fragile material scribing head device and a fragile material scribing method that can be easily obtained at low cost.

  The fragile material scribe head device of the present invention includes a cutter holder provided with a cutter wheel, a pressure means by air pressure for urging the cutter holder toward the work fragile material side, and the pressure means as the cutter wheel. Drive means for moving up and down in a direction to advance and retreat toward the work brittle material side, and the pressurizing means such that the cutter wheel supports the work brittle material side so that the cutter wheel can advance and retreat, and moves in the scribe direction of the work brittle material In a fragile material scribing head device including a scribing body provided freely, the cutter holder is connected to the pressing means by a leaf spring piece.

  First, when detecting the upper surface level of the fragile material to be processed, the pressing means is moved downward by the driving means in the direction in which the cutter wheel contacts the fragile material to be processed while pressing the cutter holder with the pressure means by air pressure. Let When the cutter wheel comes into contact with the work-fragile material, the leaf spring that supports the cutter holder on the pressurizing means is instantaneously bent by the contact pressure, and the upper surface level of the work-fragile material can be detected. The scribe body is moved in the scribe direction of the work fragile material by the cutter wheel set according to the upper surface level and the depth of cut of the work fragile material, and a cut is formed on the upper surface of the work fragile material by the cutter wheel. Can cut fragile materials.

  Further, the fragile material scribe head device of the present invention is a level detection means for outputting a detection signal for detecting the upper surface level of the fragile material to be processed by the bending of the leaf spring by the contact pressure with which the cutter wheel contacts the fragile material to be processed, A stop signal for stopping the driving means for lowering the pressurizing means is output by the level detection signal of the level detecting means, and the upper surface level of the work brittle material and the cut depth of the work brittle material detected by the level detection means And a control means for the drive means for lowering the pressurizing means to the lowered position of the cutter wheel according to the above.

  Then, the control means outputs a stop signal according to the level detection signal of the level detection means, stops the driving means that lowers the movable means, moves the scribe body from the upper position of the work brittle material, or works The fragile material is moved from the lowered position of the cutter wheel 1, and the lower position of the cutter wheel is controlled in accordance with the upper surface level position of the fragile material to be processed and the cutting depth of the fragile material to be processed, where the fragile material to be processed does not exist. The pressure means is lowered by driving the drive means to the lowered position of the cutter wheel according to the level position of the work brittle material set by the control means and the cut depth of the upper surface of the work brittle material. The scribing body can be moved in the scribing direction of the fragile material to be processed and scribed on the upper surface of the fragile material to be processed by the cutter wheel.

  Further, in the fragile material scribe head device of the present invention, the level detection means for outputting the upper surface level detection signal of the fragile material to be processed is formed by level detection electrodes provided on the cutter holder and the scribe main body, respectively, which are in contact with each other. Is.

  When the cutter wheel comes into contact with the work-fragile material, the leaf spring piece that supports the cutter holder on the scribe body with the contact pressure is momentarily bent, and the level detection electrode is opened or opened to By outputting a level detection signal, the upper surface level of the work brittle material can be instantaneously and reliably detected with a simple configuration.

  The fragile material scribing method of the present invention includes a step of moving the pressurizing means up and down by a drive means in a direction in which the cutter wheel contacts the work brittle material while pressing the cutter holder by the pressurizing means by air pressure (first step) Step) and a level detection signal that the level detection means detects the upper surface of the work brittle material by the deflection of the leaf spring that supports the cutter holder on the pressurization means with the contact pressure between the cutter wheel and the work brittle material At the same time, the control means outputs a stop signal in response to the level detection signal of the level detection means to stop the driving means that lowers the pressurizing means (second step), and where the work brittle material does not exist Work to set the lowering position of the cutter wheel according to the upper surface level position of the work brittle material and the cutting depth of the work brittle material with the control means Step (third step) and a step of lowering the pressurizing unit by driving the driving unit to the lowering position of the cutter wheel according to the upper surface level position and the cutting depth of the fragile material to be processed set by the control unit (first step) 4) and a step (fifth step) of moving the scribe body in the scribe direction of the fragile material to be processed and scribing the upper surface of the fragile material to be processed with a cutter wheel.

  First, when detecting the upper surface level of the fragile material to be processed, the pressing means is moved downward by the driving means in a direction in which the cutter wheel contacts the fragile material to be processed while pressing the cutter holder with the pressurizing means by air pressure. . Next, when the cutter wheel comes into contact with the work weak material, the level detection means outputs a level detection signal of the work weak material due to the bending of the leaf spring piece, and the control means generates a stop signal by the level detection signal of the level detection means. The driving means that outputs and lowers the movable means is stopped.

  Next, the lower position of the cutter wheel corresponding to the upper surface level position of the work brittle material, the level position of the work brittle material and the cutting depth is set by the control means in the absence of the work brittle material, and the control means The pressurizing means is lowered by driving the drive means to the lowered position of the cutter wheel according to the set cutting depth of the fragile material to be processed, and the scribe body is moved in the scribe direction of the fragile material to be processed and is covered by the cutter wheel. Scribe on top of the vulnerable material.

  The fragile material scribe head device of the present invention can reliably detect the upper surface level of the fragile material to be processed without damaging the fragile material such as a glass plate, and can further simplify the support structure of the cutter holder. With the configuration, the upper surface level of the work-fragile material can be reliably detected, and the apparatus can be obtained at a low cost.

  Moreover, the lowering position of the cutter wheel according to the upper surface level position of the work fragile material and the cutting depth of the work fragile material can be reliably set, and the cutter wheel can be scribed on the upper surface of the work fragile material.

  In addition, the fragile material scribing method of the present invention can reliably detect the upper surface level of the fragile material to be processed without damaging the fragile material such as a glass plate. The lowering position of the cutter wheel according to the cutting depth of the work brittle material can be set reliably, and the cutter wheel can be scribed on the upper surface of the work brittle material.

  Embodiments of a fragile material scribing head device and a fragile material scribing method of the present invention will be described with reference to the drawings.

  The cutter wheel 1 is rotatably supported at the lower end of the cutter wheel support 3 by a horizontal shaft 2, and the vertical shaft 4 protruding from the upper surface of the cutter wheel support 3 is supported by the cutter holder 5. 6 is supported so as to be rotatable in the horizontal direction.

  A pressurizing means 8 by air pressure for urging the cutter holder 5 downward toward the work brittle material 7 side is formed by a pressurizing operation body 9, and the pressurizing operation body 9 is formed in the vertical direction in the lower part. The cylinder part 10 and a frame part 11 formed at the peripheral part at the lower part of the cylinder part 10 are formed, and the lower end part of the cylinder part 10 is opened in the frame part 11.

  A pressure roller 12a that presses the upper surface of the cutter holder 5 is rotatably supported on a horizontal axis at the lower end of the piston 12 that moves up and down the cylinder portion 10 of the pressure operating body 9. ing. Further, an air passage 13 communicating with the upper portion of the cylinder portion 10 is formed in the upper portion of the pressurizing operation body 9, and the communication passage 13 is opened on the upper side surface of the pressurization operation body 9.

  The pressurizing operating body 9 is provided in a pressurizing operating body sliding chamber 15 opened in the lower surface of the scribe body 14 so as to be slidable in the vertical direction. While being hermetically sealed by the slide guide 16 between the lower outer peripheral surface of the pressurizing actuating body 9, the pressurizing actuating body 9 slides forward and backward in the pressurizing actuating body sliding chamber 15, and this pressurizing operation is performed. The upper part of the body sliding chamber 15 is airtight, and the air pressure supplied from the air supply port 18 formed in the scribe body 14 is applied to the upper part of the piston 12 through the air passage 13 of the pressurizing body 9. The piston 12 is urged downward.

  In addition, a sliding hole 20 is formed in the upper part of the scribe body 14 so as to project an elevating shaft 19 integrally provided on the upper portion of the pressurizing operation body 9 in an airtight manner. The wheel 1 is moved up and down by a driving means 21 such as a stepping motor in a direction in which the wheel 1 advances and retreats toward the work brittle material 7 side.

  The side part of the frame part 11 of the pressurizing means 8 and the side part of the cutter holder 5 are connected by a leaf spring piece 24 having both ends fixed by bolts 22 and 23, respectively.

  Further, the frame portion 11 of the pressurizing means 8 is prevented from rotating by the rotation-preventing pin 29 to the scribe body 14.

  Further, level detecting means 25 for outputting an upper surface level detection signal of the work brittle material 7 by the bending of the leaf spring piece 24 by the contact pressure with which the cutter wheel 1 contacts the work brittle material 7 is provided at the tip of the cutter holder. The level detecting electrode 26 and the level detecting electrode 28 provided on the electrode mounting portion 27 protruding downward from the frame portion 11 of the pressurizing means 8 are formed.

  Further, the control means 30 outputs a stop signal for stopping the driving means 21 for lowering the pressurizing means 8 according to the level detection signal of the work weak material 7 of the level detection means 25 and detected by the level detection means 25. The driving means 21 for lowering the pressurizing means 8 to the lowered position of the cutter wheel 1 according to the upper surface level of the work brittle material 7 and the cutting depth of the work brittle material 7 is controlled.

  Next, the operation of this embodiment will be described.

  First, in the first step of detecting the upper surface level of the work fragile material 7, the work fragile material 7 such as a glass plate is placed facing the lowered position of the cutter wheel 1, and in this state, the air supply port Air is supplied from 18 to the air passage 13, and the piston 12 of the pressurizing means 8 by the air pressure supplied to the cylinder portion 10 is lowered, and the cutter holder 5 is pressed downward by the pressure roller 12 a attached to the piston 12. The In a state where the cutter holder 5 is pressed, the driving means 21 such as a stepping motor is driven, and the elevating shaft 19 moves the pressurizing means 8 downward in a direction in which the cutter wheel 1 contacts the work brittle material 5.

  At this time, the air pressure applied to the piston 12 of the pressurizing means 8 may be such that an urging force that allows the cutter holder 5 to move down together with the pressurizing means 8 is obtained.

  Next, the level detection means 25 outputs a level detection signal of the work-fragile material 7 and the control means 30 outputs a stop signal according to the level detection signal of the level detection means 25 to drive down the pressurizing means 8. The second step of stopping the means 21 is that when the cutter wheel 1 comes into contact with the work brittle material 7, the leaf spring piece 24 that supports the cutter holder 5 on the scribe body 14 with the contact pressure is the piston of the pressurizing means 8. The level detection electrode 26 provided on the frame 11 of the pressurizing means 8 is provided with the level detection electrode 26 provided on the cutter holder 5 by momentarily bending against the air pressure urging the pressure 12 It is opened away from 28 and outputs an upper surface level detection signal of the work brittle material 7. Based on this level detection signal, the control means 30 detects the upper surface level of the work brittle material 7 and stops the driving means 21.

  The step of setting the lowering position of the cutter wheel 1 in accordance with the upper surface level position of the next third work-fragile material 7 and the cutting depth G of the work-fragile material 7 is performed by moving the pressurizing means 8 upward by the drive means 21. The scribing body 14 is moved to a position where the work brittle material 7 does not exist at the lowered position of the cutter wheel 1, or the work brittle material 7 is not present at the lowered position of the cutter wheel 1. The processing brittle material 7 is moved. Then, the cutting depth G of the upper surface of the work-fragile material 7 is input to the control means 30 to which the upper surface level detection signal is input from the level detecting means 25 by an input means (not shown) such as a keyboard, or is automatically cut. The depth G is input, and the lowering position of the cutter wheel 1 corresponding to the upper surface level position of the fragile material 7 to be processed and the cutting depth G of the fragile material 7 to be processed is set in the control means 30.

  Furthermore, the fourth step of lowering the pressurizing means 8 by driving of the driving means 21 to the lowered position of the cutter wheel 1 according to the level position of the work vulnerable material 7 set by the control means 30 and the cutting depth G is as follows. When the driving means 21 is driven and the elevating shaft 19 is lowered, the cutter holder 5 connected to the pressurizing means 8 by the leaf spring piece 24 is lowered while being controlled by the control means 30, and is moved to the cutter holder 5. The cutter wheel 1 supported via the cutter wheel support 3 is lowered to the cutting depth G position set on the upper surface of the work brittle material 7.

  Next, in the fifth step of scribing on the upper surface of the work fragile material 7, the scribe main body 1 is placed in a state where the cutter wheel 1 is lowered to the cutting depth position set on the upper surface of the work fragile material 7. The fragile material 7 to be processed is moved in the scribe direction, and a scribe line having a cutting depth G set on the upper surface of the fragile material 7 to be processed is formed by the cutter wheel 1. At this time, the air pressure applied to the piston 12 of the pressurizing means 8 is set to a pressure corresponding to the urging force that allows the cutter holder 5 to scribe the work brittle material 7 together with the pressurizing means 8.

  When detecting the upper surface level of the fragile material 7 to be processed, the pressure is applied by the driving means 21 in the direction in which the cutter wheel 1 is in contact with the fragile material 7 to be processed while pressing the cutter holder 5 by the pressure means 8 by air pressure. When the means 8 is moved downward and the cutter wheel 1 comes into contact with the work brittle material 7, the leaf spring piece 24 supporting the cutter holder 5 on the pressurizing means 8 is bent instantaneously by the contact pressure, and the work brittle material. 7 can be reliably detected, and the scribe can be reliably performed according to the detected upper surface level of the fragile material 7 to be processed and the cutting depth G, and the upper surface level of the fragile material to be processed is detected by a weakness such as a glass plate. Without missing or damaging the material, it can be ensured instantaneously, and the support structure of the cutter holder can be simplified and obtained at low cost.

  In the above embodiment, the level detecting means 25 is the cutter by the bending of the leaf spring piece 24 that supports the cutter holder 5 on the pressurizing means 8 with the contact pressure with which the cutter wheel 1 contacts the upper surface of the work brittle material 7. The holder 5 moves upward, and the level detection electrode 26 provided on the cutter holder 5 opens away from the level detection electrode 28 provided on the frame portion 11 of the pressurizing means 8 so that a level detection signal is output. However, the bending of the leaf spring piece 24 moves the cutter holder 5 upward, and the level detection electrode 26 provided on the cutter holder 5 comes into contact with the level detection electrode 28 provided on the frame portion 11 of the pressurizing means 8. It is also possible to output a level detection signal by closing.

It is a longitudinal front view of the scribing head device of the fragile material of the present invention.

Explanation of symbols

1 Cutter wheel 5 Cutter holder 7 Workable brittle material 8 Pressurizing means
14 Scribe body
21 Drive means
24 leaf spring
25 level detection means
26, 28 level detection electrodes
30 Control means

Claims (4)

Cutter holder provided with a cutter wheel, pressurizing means by air pressure for urging the cutter holder toward the work brittle material side, and a direction in which the cutter wheel advances and retracts toward the work brittle material side Drive means for moving up and down, and a scribing body that supports the pressurizing means so that the cutter wheel can move forward and backward toward the work brittle material side and is movable in the scribe direction of the work brittle material. In the fragile material scribe head device,
A fragile material scribe head device, wherein the cutter holder is connected to the pressurizing means by a leaf spring piece. Level detection means for outputting a level detection signal for detecting the upper surface of the work fragile material by the bending of the leaf spring piece by the contact pressure at which the cutter wheel contacts the work fragile material;
In response to the level detection signal from the level detection means, the driving means for lowering the pressurizing means outputs a stop signal, and the upper surface level of the fragile material to be processed and the cutting depth of the fragile material to be processed detected by the level detection means 2. The fragile material scribe head device according to claim 1, further comprising a drive means control means for lowering the pressurizing means to a lowered position of the cutter wheel according to the above.   3. The fragile material according to claim 2, wherein the level detection means for outputting the upper surface level detection signal of the fragile material to be processed is formed by level detection electrodes provided on the cutter holder and the scribe main body and contacting and separating from each other. Scribe head device. A step of moving the pressurizing means up and down by a driving means in a direction in which the cutter wheel contacts the work brittle material while pressing the cutter holder by the pressurizing means by air pressure;
The level detection means outputs a level detection signal in which the upper surface of the work fragile material is detected by the deflection of the leaf spring piece that supports the cutter holder on the pressure means by the contact pressure between the cutter wheel and the work fragile material. A step in which the control means outputs a stop signal according to the level detection signal of the level detection means to stop the driving means that lowers the pressurizing means;
A step of setting the lowering position of the cutter wheel according to the upper surface level position of the work fragile material and the cut depth of the work fragile material in the absence of the work fragile material;
Lowering the pressurizing means by driving the driving means to the lowering position of the cutter wheel according to the upper surface level position of the work brittle material set by the control means and the cutting depth;
A scribing method for a fragile material, comprising: a step of moving a scribe body in a scribing direction of the fragile material to be processed, and scribing on the upper surface of the fragile material to be processed with a cutter wheel.

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