JP2005335936A - Work reversing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a work reversing device capable of reversely aligning a chip LED by a simple reversing mechanism, by maximizing capacity of a feeder for supplying the chip LED to a carrying process, when taping a light emitting surface of the chip LED by the so-called side view turned sideways. <P>SOLUTION: This work reversing device has a reversing table 21 forming a suction nozzle 27 for sucking the chip LED 11 and having a flat suction surface 26 for stably securing an attitude of the sucked chip LED 11, and a rotary means for reversing the chip LED 11 sucked to the reversing table 21 by rotating the reversing table 21 at a predetermined angle in the direction for changing an angle of the suction surface 26. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a work reversing device for aligning work polarities in one direction when taping a work such as an electronic component having polarity.

  Since electronic components such as chip LEDs have polarity, when they are stored in a carrier tape for product shipment by a taping device, it is necessary to align the polarities of the chip LEDs in one direction. The taping device is provided with a work reversing device, and is provided with a mechanism for rotating the chip LED adsorbed by the transport head 180 degrees in the horizontal direction. The chip LED supplied from the feeder is adsorbed by the transport head, and after the characteristic inspection, the polarity of the chip LED is aligned by the work reversing device. Chip LEDs with the same polarity are inserted into a carrier tape, encapsulated with a cover tape, and then wound on a reel to complete taping.

  By the way, as the attitude of the chip LED when taping, there are a so-called top view type that taps with the light emitting surface of the chip LED facing upward, and a so-called side view type that taps with the light emitting surface of the chip LED facing sideways. is there. When taping with the top view type, the chip LED is supplied to the transport process with the light emitting surface facing upward from the feeder, and the top surface of the chip LED is transported to each process while being adsorbed to the tip nozzle of the transport head. . When the chip LED is attracted to the tip nozzle of the transport head, the chip LED is positioned in the X and Y axis directions, but the polarity direction varies. Therefore, after the characteristics of the chip LED are inspected and the polarity direction is different, the chip LED attracted to the transport head is rotated 180 degrees in the horizontal direction, aligned in one direction, and then taped. I am doing so.

  On the other hand, when taping a side view type chip LED, the chip LED is supplied in a horizontal direction from the feeder to the transport process, and the side surface of the chip LED is attracted to the tip nozzle of the transport head and transported to each process. Also in this case, the chip LED is positioned in the X and Y axis directions when adsorbed to the tip nozzle of the transport head, but the polarity directions are different, so that the polarity is the same as in the case of the top view type. It is necessary to provide a work reversing device that aligns in the direction. However, in this case, since the conveyance head adsorbs the side surface of the chip LED, the chip LED has to be rotated 180 degrees in the vertical direction, and such a reversing operation becomes a rather complicated mechanism. . Therefore, the most common method used in the past is that the chip LED selected by the feeder is only in one specific direction, and only the chip LED in which the polarity is aligned in one direction is used in the transport process sideways. By supplying, the complicated alignment inversion process as described above was eliminated.

  However, with such a taping method, the structure is simple, but the sorting ability by the feeder is reduced to about ½. Therefore, the cycle time of the entire apparatus depends on the ability of the feeder, and the apparatus can be operated at high speed. I can't. Therefore, it has been desired to develop an apparatus capable of taping at a high speed so as to make the most of the ability of the feeder.

  Therefore, the problem to be solved by the present invention is to provide a work reversing device capable of maximizing the ability of the feeder and reversing and aligning the side view type work by a simple reversing mechanism. It is.

  In order to achieve the above-mentioned object, a work reversing device according to the present invention is provided with a reversing table in which a suction nozzle for sucking a work is formed and a flat suction surface is provided to stably secure the posture of the sucked work. And a rotating means for rotating the reversing table by a predetermined angle in a direction in which the angle of the attracting surface changes, and reversing the work sucked on the reversing table.

  According to the work reversing device of the present invention, the work attracted to the reversing table is reversed simply by rotating the reversing table in the direction in which the angle of the suction surface of the work changes without requiring a complicated reversing mechanism. be able to.

  Hereinafter, an embodiment of a work reversing device according to the present invention will be described based on the accompanying drawings. 1 to 11 show an embodiment when the present invention is applied to a chip LED taping process. FIG. 1 shows a schematic configuration of a work transfer device 1, and the work transfer device 1 includes a ring-shaped rotating plate 2. A large number of work transporters 3 are arranged on the rotating plate 2 along the circumference, and a transport head 4 is attached to the tip of each work transporter 3 as shown in FIGS. . Further, a block 6 in which a suction nozzle 5 is formed is attached to the tip of the transport head 4, and a lower surface 7 of the block 6 is formed flat. The suction nozzle 5 is connected to a suction pipe 8 through a hollow portion of the transport head 4 and the work transporter 3.

  As shown in FIG. 1, a feeder 10 that extends straight toward the rotating plate 2 is disposed on the outer peripheral portion of the rotating plate 2 of the workpiece transfer device 1. In order to supply the chip LEDs 11 to the work transporter 3 one by one, the feeder 10 supplies the chip LEDs 11 with the light emitting surface of the chip LED 11 facing upward and the X and Y axis directions aligned. The upper surface of the chip LED 11 supplied to the tip of the feeder 10 is adsorbed by the adsorption nozzle 5 on the lower surface 7 of the transport head 4.

  The chip LED 11 is conveyed to each step of taping as the rotating plate 2 rotates intermittently in the clockwise direction in FIG. Specifically, a centering unit 12, an inspection unit 13, and a workpiece take-out unit 14 are sequentially arranged on the outer peripheral portion of the rotating plate 2 adjacent to the feeder 10 along the conveying direction of the chip LED 11. In the process of the centering unit 12, the chip LED 11 attracted to the transport head 4 is aligned, and in the process of the inspection unit 13, the probe is pressed against the centered chip LED 11 to conduct a continuity test. Further, in the process of the workpiece take-out unit 14, the chip LED that has failed to conduct due to the conduction check is excluded from the transport process.

  Further, a polarity reversing unit 15 is disposed on the outer periphery of the rotating plate 2 adjacent to the take-out unit 14. Since the chip LED 11 has polarity, it is necessary to align the polarity in the same direction when taping. Therefore, the polarity of the chip LED 11 is reversed by rotating it 180 degrees horizontally in the process of the polarity reversing unit 15 with respect to the chip LED 11 attracted to the transport head 4 in the direction of different polarity.

  As shown in FIG. 3, the polarity reversing unit 15 includes a reversing table 16 and a driving device 17 for horizontally rotating the reversing table 16. A driving force is transmitted to the reversing table 16 by a belt 18 that is stretched between the reversing table 16 and the driving device 17. The chip LED 11 is attracted to the upper surface 19 of the reversing table 16, and the reversing table 16 is rotated 180 degrees in the horizontal direction, whereby the chip LED 11 is reversed. The polarity can be aligned in the same direction by the conveyance head 4 adsorbing the inverted chip LED 11 again.

  As shown in FIG. 1, a work reversing device 20 according to the present invention is disposed on the outer peripheral portion of the rotating plate 2 adjacent to the polarity reversing unit 15. As shown in FIG. 2, the work reversing device 20 includes a reversing table 21 positioned at the front end portion of the transport head 4 of the work transporter 3, and rotating means for rotating the reversing table 21 by a predetermined angle. . The rotating means includes, for example, an integrally structured rotating shaft 22 extending rearward of the reversing table 21, a pulley 23 attached to the rotating shaft 22, a motor 24 for driving the rotating shaft 22, and driving of the motor 24. A belt 25 is provided between the pulley 23 and the pulley 23 to transmit force to the rotary shaft 22. As shown in FIG. 4, the reversing table 21 has a block shape in which a cylindrical body is cut into almost ¼, so that the posture of the adsorbed chip LED 11 can be stably secured on one of the cut surfaces. A flat suction surface 26 is formed. Further, a suction nozzle 27 is formed on the suction surface 26, and the suction nozzle 27 communicates with a suction hole 28 provided in the horizontal direction inside the reversing table 21. The axis center line 29 of the suction hole 28 coincides with the rotation center axis of the reversing table 21. As shown in FIG. 2, the suction hole 28 of the reversing table 21 communicates with the suction pipe 31 through a hollow hole 30 formed along the axial length of the rotating shaft 22.

  Next, the operation of the work reversing device 20 having the above configuration will be described with reference to FIGS. FIG. 5 shows a positional relationship between the transport head 4 and the lower surface 7 when the chip LED 11 is attracted to the reversing table 21 of the work reversing device 20. As shown by the arrow 33, it moves in the horizontal direction toward the reversing table 21. The position of the lower surface 7 of the transport head 4 is set slightly higher than the position of the upper surface 32 of the reversing table 21. The reversing table 21 is arranged as a vertical wall with the suction surface 26 facing the transport direction of the transport head 4, and the suction nozzle 27 is located near the upper end of the suction surface 26. The position of the suction nozzle 27 substantially coincides with the position of the chip LED 11 sucked by the transport head 4. The chip LED 11 is transported with its upper surface 34 being sucked by the suction nozzle 5 of the suction head 4.

  FIG. 6 shows the positional relationship when the transport head 4 passes over the reversing table 21. At this time, the lower surface 7 of the transport head 4 passes through the upper surface 32 of the reversing table 21. For this reason, the chip LED 11 is separated from the lower surface 7 of the transport head 4 by being sucked by the suction nozzle 27 provided on the suction surface 26 of the reversing table 21 and is sucked by the suction surface 26 of the reversing table 21.

  FIG. 7 shows a state in which the left side surface 35 of the chip LED 11 is sucked to the suction surface 26 of the reversing table 21. The transport head 4 once stops just above the reversing table 21 and then moves up as indicated by an arrow 36.

  FIG. 8 shows the positional relationship when the conveying head 4 is raised by a predetermined distance directly above the reversing table 21 and at the same time the reversing table 21 is rotated 90 degrees counterclockwise as indicated by an arrow 37. It is a thing. The transport head 4 is set at a raised position so as not to hinder the rotation of the reversing table 21. The rotation center axis of the reversing table 21 is the same as the axis center line 29 of the suction hole 28, and the chip LED 11 after the reversal and the suction nozzle 5 of the transport head 4 are positioned on the same line 38, and the suction of the transport head 4. The right side surface 39 of the chip LED 11 faces the nozzle 5. The transport head 4 includes vertical means (not shown) for moving up and down on the reversing table 21, and moves up in conjunction with the rotating operation of the reversing table 21.

  FIG. 9 shows a state where the transport head 4 is lowered to a predetermined position. This predetermined position is a distance that the chip LED 11 can be attracted by the suction force of the suction nozzle 5 of the transport head 4. When the lowering operation of the transport head 4 is stopped and the suction nozzle 27 of the reversing table 21 is turned off at the same time, the chip LED 11 is separated from the suction surface 26 of the reversing table 21 and is sucked and sucked to the lower surface 7 of the transport head 4.

  FIG. 10 shows a state in which the right side surface 39 of the chip LED 11 is attracted to the lower surface 7 of the transport head 4. While the transport head 4 moves horizontally in the direction indicated by the arrow and proceeds to the next step, the reversing table 21 rotates 90 degrees clockwise and returns to the same state as shown in FIG.

  As shown in FIG. 1, the chip LED 11 attracted to the transport head 4 while being reversed by 90 degrees is aligned again by the centering unit 40 disposed next to the work reversing device 21, and further next to it. It is conveyed to the arranged taping device 41.

  As shown in FIG. 1, the taping device 41 includes a table 43 for feeding the tape 42, a tape feeding drum 44 and a tape take-up drum 45 disposed at both ends of the table 43, and the table 43 And a thermocompression bonding device 46 disposed on the surface. As shown in FIG. 11, the tape 42 encloses the carrier tape 42a partitioned into the storage chambers 47 for inserting the chip LEDs 11 horizontally and the chip LED 11 inserted into the carrier tape 42a. Cover tape 42b. The step of inserting the chip LED 11 into the carrier tape 42 a and the step of sealing with the cover tape 42 b are performed at appropriate positions on the table 43. By covering the carrier tape 42a with the cover tape 42b and passing through the thermocompression bonding device 46, the cover tape 42b is pressure-bonded to the carrier tape 42a, and the lateral chip LEDs 11 are sealed one by one in the storage chamber 47. The tape 41 enclosing the chip LED 11 is wound around the tape winding drum 45.

  In the above embodiment, the case where the work reversing device of the present invention is applied to the taping process of the chip LED has been described. However, the present invention can also be applied to other electronic parts having polarity and a transport process other than taping. It is.

  As described above, in the present invention, when a workpiece having polarity, such as a chip LED, is taped with a so-called side view type, the workpiece is supplied from the feeder with the light emitting surface facing upward as in the top view type. To align the polarities in the same direction, the workpiece can be reversed 180 degrees in the horizontal direction with the light emitting surface facing upward, and then the work can be shifted to the taping operation simply by tilting the workpiece 90 degrees and reversing horizontally. In addition, taping can be performed at high speed without being affected by the ability of the feeder, and the industrial effect is great.

It is a top view which shows the whole structure of the workpiece conveyance apparatus to which the workpiece reversing apparatus which concerns on this invention is applied. It is the sectional view on the AA line in Drawing 1 of the work reversing device concerning the present invention. It is a top view which shows the partial structure of the polarity inversion apparatus applied to this invention. It is a perspective view which shows the inversion table of a workpiece | work inversion apparatus. It is explanatory drawing of the 1st process which shows the effect | action of a workpiece | work reversing apparatus. It is explanatory drawing of the 2nd process which shows the effect | action of a workpiece | work reversing apparatus. It is explanatory drawing of the 3rd process which shows the effect | action of a workpiece | work reversing apparatus. It is explanatory drawing of the 4th process which shows the effect | action of a workpiece | work reversing apparatus. It is explanatory drawing of the 5th process which shows the effect | action of a workpiece inversion apparatus. It is explanatory drawing of the 6th process which shows the effect | action of a workpiece | work reversing apparatus. It is explanatory drawing which shows the process of taping chip LED sideways.

Explanation of symbols

1 Work Transfer Device 4 Transfer Head 5 Suction Nozzle 11 Chip LED
20 Work reversing device 21 Reversing table 22 Rotating shaft 23 Pulley 24 Motor 25 Belt 26 Suction surface 27 Suction nozzle

Claims (4)

A reversing table having a flat suction surface to stably hold the posture of the sucked workpiece, which is formed with a suction nozzle for sucking the workpiece,
A work reversing device comprising: a rotating means for rotating a reversing table by a predetermined angle in a direction in which the angle of the sucking surface changes, and reversing the work sucked on the reversing table. The work reversing device according to claim 1, wherein the predetermined angle is 90 degrees. The work reversing device according to claim 1 or 2, wherein the reversing table has its suction surface rotated upward from a vertical position to a horizontal position. The work reversing apparatus according to claim 1, further comprising a transport head for supplying a work to the suction surface of the reversal table, wherein the transport head is moved up and down in conjunction with rotation of the reversal table.

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