JP2017041476A - Dividing device for ceramic substrate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dividing device that makes crack or chip less likely to occur in a ceramic substrate surface to be divided.SOLUTION: A dividing device (1) according to the present invention comprises: a conveyance belt (2) that places and conveys an undivided ceramic substrate (21) with a dividing groove; a first motor (3) that drives the conveyance belt; a first dividing roller (4) that rotates following the conveyance belt; a pressing belt (5) opposite the conveyance belt; a second motor (6) that drives the pressing belt; and a second dividing roller (7) that rotates following the pressing belt. By passing the ceramic substrate between the first dividing roller and the second dividing roller, the ceramic substrate is divided along the dividing groove. The torque of the second motor is set smaller than the torque of the first motor, and the rotating speed of the second motor is set higher than the rotating speed of the first motor.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ceramic substrate dividing apparatus used for taking a large number of chip parts.

  Conventionally, a dividing apparatus 100 shown in FIG. 5 has been proposed as a ceramic substrate dividing apparatus (see, for example, Patent Document 1). A dividing apparatus 100 described in Patent Document 1 is provided with a conveying belt 101 for carrying and conveying a ceramic substrate 200 in which a large number of dividing grooves are formed in parallel, and is rotatable by being driven by the conveying belt 101. A first dividing roller 102, a pressing belt 103 that can be pressed against the ceramic substrate 200 on the conveying belt 101 so as to face the conveying belt 101, and a second belt that is rotatable by being driven by the pressing belt 103. And the dividing roller 104.

  In the dividing apparatus 100 configured as described above, when the ceramic substrate 200 before being divided is mounted on the conveying belt 101 and the driving pulley 106 is rotated in the direction A in the figure by the motor 105, the conveying belt 101 is driven by the driving pulleys 106˜. It is supported by 109 and rotates in the clockwise direction in the figure. As a result, the conveying belt 101 conveys the ceramic substrate 200 in the direction C shown in the figure, and the first dividing roller 102 pressed against the conveying belt 101 rotates in the direction B in the figure following the conveying belt 101. On the other hand, since the pressure cylinder 110 presses the second dividing roller 104 in the direction of the first dividing roller 102, the presser belt 103 that is in pressure contact with the second dividing roller 104 is the conveying belt 101. By contacting the ceramic substrate 200, the driving force of the conveying belt 101 is transmitted to the pressing belt 103. As a result, the presser belt 103 is supported by the drive pulleys 111 to 113 and rotates counterclockwise in the figure, and the second dividing roller 104 that presses against the presser belt 103 is driven by the presser belt 103. And rotate in the direction D shown in the figure. Further, the ceramic substrate 200 conveyed in the direction C shown in the figure is sandwiched between the dividing rollers 102 and 104 while being sandwiched between the conveying belt 101 and the pressing belt 103. At this time, since the second dividing roller 104 to which the pressure from the pressure cylinder 110 is applied presses the ceramic substrate 200 on the conveying belt 101 via the pressing belt 103, bending stress is applied to the ceramic substrate 200. As a result, the ceramic substrate 200 is divided along the dividing groove, and the divided ceramic substrate 201 passes between both the dividing rollers 102 and 104 and is conveyed to the vicinity of the drive pulley 109. In this way, the dividing apparatus 100 divides the ceramic substrate 200 before dividing along the dividing grooves, and the divided ceramic substrate 201 obtained thereby becomes a chip component.

JP-A-6-120367

  By the way, in the dividing device 100 described in Patent Document 1, the driving force of the conveying belt 101 is transmitted to the pressing belt 103 via the ceramic substrate 200, so that the pressing belt 103 is driven by the conveying belt 101. Therefore, the pressing belt 103 rotates with a delay compared to the conveying belt 101. In particular, when the surface of the presser belt 103 is worn due to aging or the like and the presser belt 103 slips with respect to the ceramic substrate 200, the presser belt 103 is moved to the transport belt 101. Will cause further delay. As a result, when the ceramic substrate 200 is divided along the dividing groove between the two dividing rollers 102 and 104, the ceramic substrate 200 can be normally divided in the rear surface direction starting from the bottom of the dividing groove. Accordingly, the ceramic substrate 200 is deformed and cracked.

  It should be noted that if the downward pressure applied to the second dividing roller 104 by the pressure cylinder 110 is increased so that the driving force of the conveying belt 101 can be easily transmitted to the pressing belt 103, the pressing force for the conveying belt 101 can be reduced. Although the delay of the belt 103 can be eliminated, in that case, an excessive pressure is applied to the ceramic substrate 200 and the ceramic substrate 200 becomes defective in shape.

  The present invention has been made in view of the above-described prior art, and an object of the present invention is to provide a dividing apparatus in which cracks and chips are unlikely to occur on a dividing surface of a ceramic substrate.

  In order to achieve the above object, a dividing apparatus according to the present invention includes a conveying belt that carries and conveys a ceramic substrate before dividing in which a dividing groove is formed, a first motor that drives the conveying belt, A first division roller that rotates following the conveyance belt, a presser belt that faces the conveyance belt, a second motor that drives the presser belt, and a rotation that follows the presser belt. A second dividing roller, and sandwiching the ceramic substrate between the first dividing roller and the second dividing roller so that the ceramic substrate passes along the dividing groove. The torque of the second motor is set smaller than the torque of the first motor, and the rotational speed of the second motor is set faster than the rotational speed of the first motor. And butterflies.

  The dividing device configured as described above includes a first motor for driving the transport belt and a second motor for driving the presser belt, and the rotational speed of the second motor is the rotational speed of the first motor. The torque of the second motor is set to be smaller than the torque of the first motor. Accordingly, the ceramic substrate can be sandwiched and passed between the two dividing rollers by the driving force of the conveying belt from the first motor while preventing a delay of the pressing belt with respect to the conveying belt. Therefore, the division | segmentation to the back surface direction of the ceramic substrate which makes the bottom part of a division | segmentation groove | channel a starting point can be performed normally.

  Further, in the above configuration, the extending directions of the conveying belt and the pressing belt are separated from each other in a direction in which the ceramic substrate is conveyed from between the first and second dividing rollers. And

  According to this configuration, since the extending directions of the conveying belt and the pressing belt are separated from each other, after the ceramic substrate is divided between the two dividing rollers, the conveying belt and the pressing belt for the divided ceramic substrate are separated. The clamping state with the belt can be released. At this time, since the second motor for driving the presser belt is provided separately from the first motor for driving the conveyor belt, the ceramic substrate is split between the two split rollers. Later, the holding state of the conveying belt and the pressing belt can be released as soon as possible.

  In the dividing device of the present invention, the first motor for driving the conveyor belt and the second motor for driving the presser belt are individually provided, and the rotational speed of the second motor is faster than the rotational speed of the first motor, In addition, since the torque of the second motor is set to be smaller than the torque of the first motor, the ceramic substrate is divided into two rollers by the driving force of the conveying belt while preventing a delay of the pressing belt with respect to the conveying belt. It can be passed between. Thereby, the division | segmentation to the back surface direction of the ceramic substrate which makes the bottom part of a division | segmentation groove | channel start can be performed normally.

It is a schematic block diagram of the division | segmentation apparatus which concerns on the example of embodiment of this invention. It is a top view of a large format board. It is a top view of a strip-shaped ceramic substrate. It is a side view of a strip-shaped ceramic substrate. It is a schematic block diagram of the conventional dividing device.

  Hereinafter, embodiments of the invention will be described with reference to the drawings.

  As shown in FIG. 1, a dividing apparatus 1 according to an embodiment of the present invention includes a conveying belt 2 that carries and conveys a ceramic substrate 21 obtained from a large-size substrate, which will be described later, and a first belt that drives the conveying belt 2. 1 motor 3, a first dividing roller 4 that rotates following the conveyance belt 2, a pressing belt 5 that faces the conveying belt 2, a second motor 6 that drives the pressing belt 5, And a second dividing roller 7 that rotates following the presser belt 5.

  As shown in FIGS. 2 to 4, the large-sized substrate 20 is formed with primary divided grooves 20 a and secondary divided grooves 20 b in a grid-like arrangement, and the divided grooves 20 a and 20 b have a cross-sectional shape of “V”. It is formed in a “letter shape”. By dividing the large substrate 20 along the primary dividing groove 20a (primary division), a strip-shaped ceramic substrate 21 shown in FIG. 3 is obtained. Then, as will be described later, the ceramic substrate 21 is divided (secondarily divided) along the secondary dividing groove 20b to obtain a chip-shaped ceramic substrate.

  The conveyor belt 2 is a belt formed of rubber or the like, and is supported in a loop shape by a plurality of drive pulleys 8 to 10. The conveying belt 2 conveys the ceramic substrate 21 mounted on the drive pulley 9 side between the first dividing roller 4 and the second dividing roller 7 to the vicinity of the driving pulley 10. It is. The first motor 3 rotates the drive pulley 8 in the direction A in the drawing about the support shaft 8a of the drive pulley 8. By the rotation of the driving pulley 8 in the direction A shown in the drawing, the conveying belt 2 rotates in the clockwise direction in the drawing. The first dividing roller 4 is a cylindrical roller and is rotatable about a support shaft 4a. The first dividing roller 4 is in pressure contact with the lower surface of the conveying belt 2, and when the conveying belt 2 rotates in the clockwise direction in the figure, the conveying belt 2 is driven to follow the direction B shown in the figure. Rotate to.

  The presser belt 5 is a belt formed of rubber or the like, and is supported by a plurality of drive pulleys 11 to 13 in a loop shape. The second motor 6 rotates the drive pulley 11 in the direction C shown in the figure around the support shaft 11a of the drive pulley 11. The rotation of the drive pulley 11 in the direction C shown in FIG. It rotates in the clockwise direction and presses the upper surface of the ceramic substrate 21 in front of the space between both the dividing rollers 4 and 7. As a result, the conveying belt 2 and the pressing belt 3 convey the ceramic substrate 21 between the dividing rollers 4 and 7 with the ceramic substrate 21 sandwiched therebetween. The second dividing roller 7 is a cylindrical roller having a diameter larger than that of the first dividing roller 4 and is rotatable about the support shaft 7a. The second dividing roller 7 is in pressure contact with the upper surface of the presser belt 5, and when the presser belt 5 rotates counterclockwise in FIG. Rotate in the direction. A pressure device (not shown) is connected to the second dividing roller 7, and this pressure device applies a downward pressure to the second dividing roller 7. This pressure presses the ceramic substrate 21 passing between both the dividing rollers 4 and 7, thereby dividing the strip-shaped ceramic substrate 21 along the secondary dividing groove 20b.

  In the dividing device 1 configured as described above, the rotation speed of the second motor 6 is set to be higher than the rotation speed of the first motor 3 and the torque of the second motor 6 is set to be smaller than the torque of the first motor 3. Then, the ceramic substrate 21 is pressed and sandwiched between both the dividing rollers 4 and 7 and passed. Specifically, the strip-shaped ceramic substrate 21 is mounted on the drive pulley 9 side of the transport belt 2 so that the extending direction of the secondary dividing groove 20b is orthogonal to the transport direction, and is transported in the direction E shown in the figure. Is done. Then, when the ceramic substrate 21 sandwiched between the conveying belt 2 and the pressing belt 5 passes between both the dividing rollers 4 and 7, the second dividing roller 7 to which the pressure from the pressure device is applied. Presses the ceramic substrate 21 on the conveying belt 2 via the pressing belt 5. At this time, since the rotation speed of the second motor 6 is higher than the rotation speed of the first motor 3, it is possible to prevent a delay of the presser belt 5 with respect to the conveying belt 2, and the torque of the second motor 6. Is set to be smaller than the torque of the first motor 3, the conveying belt 2 and the presser belt 5 can be driven to rotate while being substantially synchronized, and the ceramic substrate 21 is interposed between both the dividing rollers 4 and 7. Can be passed by the driving force of the conveyor belt 2. As a result, the second dividing roller 7 generates a bending stress in the direction of opening the secondary dividing groove 20b of the ceramic substrate 21, and the bending stress causes the bottom 20c (see FIG. 4) of the secondary dividing groove 20b to start. The division (secondary division) of the ceramic substrate 21 to be performed in the rear surface direction can be performed normally. The chip-shaped ceramic substrate 22 (see FIG. 1) that is secondarily divided in this way is conveyed to the drive pulley 10 side.

  Here, since the conveying belt 2 and the pressing belt 5 are formed of rubber or the like, the upper surface of the conveying belt 2 and the lower surface of the pressing belt 5 rub against each other between the split rollers 4 and 7. Static electricity is easily generated on the upper surface of the feeding belt 2 and the lower surface of the pressing belt 5. In the present embodiment, as described above, the rotation speed of the second motor 6 is adjusted to be faster than the rotation speed of the first motor 3, and the transfer speed between the transport belt 2 and the presser belt 5 is adjusted. Since they can be almost synchronized, the contact surfaces of the belts 2 and 5 can be prevented from rubbing against each other, and the generation of static electricity can be suppressed. Thereby, the damage to the product by the resistance value of the resistor mounted on the ceramic substrate 21 being fluctuated by static electricity can be reduced.

  Further, in this embodiment, since the conveying belt 2 and the pressing belt 5 extend in the direction away from each other from between the dividing rollers 4 and 7 to the conveying direction of the ceramic substrate 21, both dividing rollers are provided. After the strip-shaped ceramic substrate 21 is divided between 4 and 7 to obtain the chip-shaped ceramic substrate 22, the holding state of the conveying belt 2 and the pressing belt 5 with respect to the ceramic substrate 22 is released. At this time, since the second motor 6 for driving the pressing belt 5 is provided separately from the first motor 3 for driving the conveying belt 2 in the dividing device 1, the conveying belt 2, the pressing belt 5, Can be released earlier. As a result, it is possible to prevent the release of the ceramic substrate 22 immediately after the division and the occurrence of cracks and chipping due to the interference of the divided surfaces.

  In addition, in this embodiment, it is possible to suppress the generation of static electricity on the contact surfaces of the belts 2 and 5, but even if static electricity is generated, the conveying belt 2 and the presser belt after the ceramic substrate 21 is divided. 5 is quickly released, so that the divided ceramic substrate 22 mounted on the conveyor belt 2 is not affected by static electricity generated on the lower surface of the pressing belt 5 as much as possible. can do. Thereby, the conveyance belt 2 can be conveyed while maintaining the aligned state of the ceramic substrate 22.

  As a configuration for releasing the sandwiched state between the conveying belt 2 and the pressing belt 5 after the strip-shaped ceramic substrate 21 is divided, a configuration in which the driving pulley 13 is removed from the dividing device 1, that is, the pressing belt 5 is used. May be supported only by the drive pulleys 11 and 12.

  In the dividing apparatus 1 according to the present embodiment, the present invention is applied to the case where the strip-shaped ceramic substrate 21 is subjected to secondary division along the secondary division grooves 20b. The present invention can also be applied to the case of primary division along 20a.

DESCRIPTION OF SYMBOLS 1 Dividing apparatus 2 Conveying belt 3 1st motor 4 1st dividing roller 5 Pressing belt 6 2nd motor 7 2nd dividing roller 20 Ceramic substrate 21 Strip-shaped ceramic substrate 22 Chip-shaped ceramic substrate

Claims (2)

  A conveying belt that carries and conveys a ceramic substrate before division in which a dividing groove is formed, a first motor that drives the conveying belt, and a first dividing roller that rotates following the conveying belt. A pressing belt facing the conveying belt, a second motor that drives the pressing belt, and a second dividing roller that rotates following the pressing belt, When the ceramic substrate is sandwiched and passed between the dividing roller and the second dividing roller, the ceramic substrate is divided along the dividing groove, and the torque of the second motor is applied to the first motor. A ceramic substrate dividing apparatus characterized in that it is smaller than the torque of the motor and the rotational speed of the second motor is set faster than the rotational speed of the first motor. 2. The extending direction of the conveying belt and the pressing belt is separated from each other in a direction in which the ceramic substrate is conveyed from between the first and second dividing rollers. A ceramic substrate dividing apparatus.