JP4180466B2 - Work transfer device - Google Patents

Description

  The present invention relates to a workpiece conveyance device that conveys a workpiece W such as a chip-shaped electronic component, and more particularly to a workpiece conveyance device that can adjust a gap between a conveyance table and a take-in pipe.

  2. Description of the Related Art Conventionally, as a workpiece transfer device, a device including a table base, a transfer table that transfers a workpiece that is rotatably arranged on the table base, and a plate that is arranged above the transfer table is known.

  The plate is provided with an intake pipe for taking in the workpiece conveyed by the conveyance table.

  As described above, the transfer table is arranged on the table base, but it is necessary to exchange the transfer table in accordance with the shape of the workpiece.

  For example, when the workpiece table is large and a thick transport table is placed on the table base, the plate also moves upward along with it, so that the gap between the plate intake pipe and the transport table is increased each time. It needs to be adjusted.

  The present invention has been made in consideration of such points, and a workpiece that can automatically adjust the gap between the intake pipe and the conveyance table even if the conveyance table is changed in accordance with the shape of the workpiece. An object is to provide a transport device.

  The present invention provides a table base, a rotation table that is rotatably arranged on the table base, conveys the workpiece, a plate that is disposed on the opposite side of the conveyance table from the table base, and a workpiece at the end of the conveyance table. The guide bar has an end portion of the intake pipe to be taken in and is provided so as to be movable with respect to the plate, and is provided with an automatic gap adjusting means for moving the guide bar to the plate, and according to the variation in the thickness of the transport table. A workpiece transfer device characterized in that a guide bar is moved by the automatic clearance adjusting means to adjust the clearance between the end of the intake pipe and the transfer table.

  According to the present invention, a peripheral edge guide is disposed on the peripheral edge of the table base, and the automatic gap adjusting means is provided at a rocker arm swingably provided on the plate and at one end of the rocker arm, and is adjusted to contact the peripheral edge guide through the plate. A workpiece transfer device comprising: a rod; and a linear shaft provided at the other end of the rocker arm and extending through the plate and connected to a guide bar.

  The present invention is a workpiece transfer device in which a spring is provided around a linear shaft, and the linear shaft is biased toward the rocker arm by the spring.

  The present invention is the workpiece transfer device, wherein the adjustment rod is attached to one end of the rocker arm so that the protruding length can be adjusted.

  The present invention is characterized in that the intake pipe is connected to a connecting pipe extending outward from the plate, and the connecting pipe is sequentially connected to a discharge pipe penetrating the plate and a suction pipe penetrating the peripheral guide. It is a workpiece transfer device.

  The present invention is the workpiece transfer device characterized in that the gap between the end of the intake pipe and the transfer table is equal to or less than the thickness of the workpiece.

  As described above, according to the present invention, even when the transfer table is replaced with a change in the size of the workpiece, the gap between the transfer table and the intake pipe can be automatically adjusted easily. Work efficiency can be improved.

  Next, an embodiment of the present invention will be described with reference to FIGS. First, an inspection classification apparatus in which a work transfer apparatus according to the present invention is incorporated will be described with reference to FIG.

  As shown in FIG. 5, the inspection classification apparatus 100 includes a parts feeder 104 and a workpiece transfer apparatus 1. In the parts feeder 104 of FIG. 5, a workpiece W such as an uninspected chip-shaped electronic component stored in the hopper 101 is supplied to the ball feeder 102 side. At this time, the amount of the workpiece W is detected by a sensor 109 provided on the ball feeder 102, and the workpiece W is supplied to the ball feeder 102 as needed according to a signal from the sensor 109. The workpiece W supplied to the ball feeder 102 is vibrated, conveyed on the trough of the ball feeder 102, and supplied to the trough of the linear feeder 103 connected downstream. The workpiece W supplied onto the trough of the linear feeder 103 is aligned and conveyed on the trough to the downstream side, and is sent to the workpiece conveying apparatus 1 side at the downstream end.

  The work transfer device 1 has a transfer table 2, and the work W transferred by the transfer table 2 is inspected for electrical characteristics and the like by the inspection unit 107 in the process of being transferred by the intermittent rotation of the transfer table 2. The inspection result data is sent to a control device (not shown) to perform pass / fail judgment or classification by characteristics. Next, when the work W is transported to the discharge unit 108 by the transport table 2, it is classified and discharged based on the result determined or classified by the control unit.

  Such an inspection classification apparatus 100 is widely used in taping apparatuses, appearance inspection apparatuses, and the like, but in recent years, various types of workpieces W, which are chip-shaped electronic components, can cope with a wide variety of workpieces W by one model. An inspection classification apparatus that can perform the process has come to be desired.

  The workpiece transfer apparatus 1 according to the present invention can sufficiently cope with changes in the shape of the workpiece W even if the workpiece W has various shapes as described below.

  Next, the workpiece transfer apparatus 1 will be described with reference to FIGS.

  1 is a cross-sectional view showing an embodiment of a work transfer device according to the present invention, FIG. 2 is a cross-sectional view showing the operation of a work transfer table according to the present invention, FIG. 3 is a partially enlarged view of FIG. FIG.

  As shown in FIG. 1, the workpiece transfer device 1 includes a base 8 constituting a reference surface, a table base 7 provided on the reference surface of the base 8, and a workpiece storage hole provided rotatably on the table base 7. 26 is provided. A peripheral edge guide 6 having a reference surface on the upper surface is provided on the peripheral edge of the table base 7.

  A drive shaft 11 extends through the base 8 and the table base 7. The drive shaft 11 is connected to a drive motor 30 to be rotatable, and the drive base 9 is directly connected to the drive shaft 11. The transport table 2 described above is placed on the drive base 9, and the lower surface of the transport table 2 abuts on the upper surface of the table base 7, and the transport table 2 is rotatable on the table base 7.

  The drive base 9 is provided with a positioning ring 10 which is fitted into the positioning hole 2b of the transport table 2 so that the axes of the transport table 2 and the drive shaft 11 are aligned.

  The transfer table 2 placed on the drive base 9 is held by a flange 4 that rotates together with the drive base 9. On the other hand, a plate 5 is provided above the transport table 2 and the peripheral guide 6. The plate 5 is connected to the flange 4 via a bearing 12, the center of the flange 4 is fixed to the drive shaft 11 with the mounting screw 3, and the flange 4 is rotatable with the drive shaft 11 as described above.

  As shown in FIG. 1, a plurality of support columns 13 are fixedly provided on the plate 5, and a rocker arm 14 is swingably provided on the upper portion of each support column 13 with a shaft 15 as a fulcrum. An adjustment rod 16 is provided at one end of the rocker arm 14 so as to be adjustable in length, and the adjustment rod 16 penetrates the plate 5 and comes into contact with the upper surface of the peripheral guide 6. A fixing nut 16 a for fixing the adjusting rod 16 to one end of the rocker arm 14 after adjustment is attached to the upper portion of the adjusting rod 16.

  A linear shaft 17 is connected to the other end of the rocker arm 14. The linear shaft 17 extends downward through the plate 5, and a guide bar 18 is held at the lower end of the linear shaft 17. A spring 19 is attached around the linear shaft 17 to urge the linear shaft 17 upward to lift the rocker arm 14.

  The linear shaft 17 passes through the plate 5 through the linear ball bushing 20 and is slidable with respect to the plate 5. Further, the guide bar 18 at the lower end of the linear shaft 17 is disposed with a gap in which the linear shaft 17 is movable between the plate 5 and the guide bar 18. The guide bar 18 holds a take-in pipe 21 for taking in the workpiece W. One end of the take-in pipe 21 faces the transfer table 2 side, and the take-in pipe 21 penetrates the plate 5 slidably.

  The other end of the intake pipe 21 is connected to one end of the connection pipe 22, and a discharge pipe 23 fitted to the plate 5 is inserted into the other end of the connection pipe 22. The discharge pipe 23 passes through the plate 5 and is connected to the hose 25 via a relay pipe 24 provided through the peripheral guide 6 and the base 8. The relay pipe 24 is provided by penetrating and fixing the peripheral guide 6, and one end thereof is housed in the recess 5 a of the plate 5. Even if the distance between the plate 5 and the peripheral guide 6 changes as will be described later, the relay pipe 24 enters the recess 5a and is connected to the discharge pipe 23 in an inserted state.

Moreover, the hose 25 is connected to the other end of the relay pipe 24 as described above.

  By the way, in FIG. 1, an automatic gap adjusting device 34 is configured by the support 13, the rocker arm 14, the adjusting rod 16, the linear shaft 17, and the guide bar 18.

  Next, the intake pipe 21 for taking in the workpiece W and the transfer table 2 will be described with reference to FIG. As shown in FIG. 3, the transport table 2 is provided with a plurality of work storage holes 26 concentrically, and the intake pipe 21 is provided to face the storage hole 26. The gap g between the intake pipe 21 and the transport table 2 is equal to or less than the dimension in which the workpiece W in the storage hole 26 does not jump out, that is, the thickness dimension t of the workpiece W shown in FIG. For example, the gap g is 0.5 mm or less for the work W of the Japan Electronics and Information Technology Industries Association standard 1005, and 1.6 mm or less for the work W of the Japan Electronics and Information Technology Industries Association standard 3216.

Next, the operation of the present embodiment having such a configuration will be described.
First, as shown in FIG. 1, the transport table 2 is placed on the drive base 9, and the transport table 2 is held between the flanges 4. The flange 4 is fixed to the drive shaft 11 by the mounting screw 3. When the conveyance table 2 is rotationally driven by the drive motor 30 via the drive shaft 11, the distance between the plate 5 connected to the flange 4 and the surface of the conveyance table 2 is determined to be a constant value. At this time, the gap g between the intake pipe 21 and the transport table 2 also takes the predetermined value described above.

  When the work W stored in the storage hole 26 of the transfer table 2 comes below the intake pipe 21 as the transfer table 2 rotates, the transfer table 2 stops. Next, the work W in the storage hole 26 is injected with compressed air from a nozzle (not shown) provided on the table base 7 below the storage hole 6, so that the intake pipe 21, the connection pipe 22, the discharge pipe 23, the relay pipe 24, It is discharged through a hose 25 to a storage box (not shown).

  Next, as shown in FIG. 2, the size of the workpiece W is changed, and a new transfer table 2 a having a large thickness is installed on the table base 7. In this case, the flange 4 and the plate 5 are raised by the difference in thickness between the transport table 2 and the transport table 2a, and the distance between the transport table 2b and the plate 5 is not changed, but the distance between the peripheral guide 6 and the plate 5 is not changed. The distance is increased by the difference in thickness between the transport table 2 and the transport table 2a.

  As the distance between the peripheral guide 6 and the plate 5 is increased in this way, the lower end of the adjustment rod 16 provided at the one end of the rocker arm 14 of the automatic gap adjustment device 34 provided on the plate 5 so as to be adjustable in length. And a gap between the upper surface of the peripheral guide 6. At this time, the linear shaft 17 biased by the spring 19 moves upward, and accordingly, the linear shaft 17 presses and pushes up the rocker arm 14. As a result, the adjustment rod 16 provided on the opposite side of the rocker arm 14 is lowered by the gap formed between the upper surface of the peripheral guide 6 and the lower end of the adjustment rod 16 comes into contact with the upper surface of the peripheral guide 6.

  By the way, the ratio of the distance that the adjustment rod 16 descends to the distance that the linear shaft 17 rises by the spring 19 is the distance from the shaft 15 of the rocker arm 14 to the support point of the adjustment rod 16 and the support point of the linear shaft 17 from the shaft 15. It is proportional to the ratio of the distance to. Therefore, when the table 2a is exchanged by changing the size of the workpiece W, the difference in the thickness dimension t of the workpiece W accompanying the size change of the workpiece W and the gap between the table 26 and the leading end of the intake pipe 21 accompanying the change of the workpiece W The distance from the shaft 15 to the adjustment rod 16, the distance from the shaft 15 to the linear shaft 17, and the protruding length of the adjustment rod 16 below the rocker arm 14 are determined so that the linear shaft 17 is pushed up by the difference g. Yes.

  That is, when the linear shaft 17 penetrating the plate 5 is pushed up via the linear ball bushing 20, the guide bar 18 attached to the linear shaft 17 is also lifted, and the end face of the intake pipe 21 fixed to the guide bar 18. And the table 2a are adjusted to a predetermined value.

  Note that the gap g causes the work W around the storage hole 26 on the transport table 2 to be wound by the injection of compressed air from the nozzle when the work W in the storage hole 26 is discharged into the intake pipe 21. In order to prevent this, the thickness dimension t of the workpiece W is preferably equal to or smaller than t.

  Thus, according to the present embodiment, the linear shaft 17 is pulled up by the rocker arm 14 swinging even when the transport table 2 is replaced with a thicker one in accordance with the shape of the workpiece W. Therefore, the linear shaft 17 The guide bar 18 fixed to the lower end is also lifted. Therefore, the gap g between the intake pipe 21 provided on the guide bar 18 and the transport table can be kept at a predetermined value. The gap g can be easily adjusted by warming the fixing nut 16a of the adjustment rod 16 and adjusting the protruding length of the adjustment rod from the rocker arm 14.

  A plurality of automatic gap adjusting devices 34 shown in FIG. 1 can be provided on the plate 5 along the circumferential direction. Moreover, in the said embodiment, although the table base 7, the conveyance table 2, and the plate 5 were shown in the horizontal direction, the table base 7, the conveyance table 2, and the plate 5 may be inclined. These may be arranged in the vertical direction. Further, the transfer table 2 may be disk-shaped, and is not limited to a circular shape, but can be applied to a flat plate having a uniform thickness even if it is a polygonal shape. The bar 18 need not be circular.

  Furthermore, the discharge of the workpiece W from the transfer table 2 to the intake pipe 21 is performed by jetting compressed air. However, the hose 25 may be sucked with a negative pressure as an auxiliary.

Sectional drawing which shows one Embodiment of the workpiece conveyance apparatus by this invention. Sectional drawing which shows the effect | action of the workpiece conveyance apparatus by this invention. The elements on larger scale of FIG. The figure which shows an example of a workpiece | work. The schematic plan view which shows an inspection classification apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inspection classification apparatus 2 Conveyance table 2a Conveyance table 4 Flange 5 Plate 6 Periphery guide 7 Table base 8 Base 9 Drive base 10 Positioning ring 11 Drive shaft 13 Strut 14 Rocker arm 16 Adjustment rod 17 Linear shaft 18 Guide bar 19 Spring 20 Linear ball bushing 21 intake pipe 22 connecting pipe 23 discharge pipe 24 relay pipe 25 hose 26 storage hole 30 drive motor 34 automatic gap adjusting means W work g gap

Claims (6)

Table base,
A transfer table which is rotatably arranged on the table base and conveys the workpiece;
A plate disposed on the opposite side of the transfer table from the table base;
It has an end of a take-in pipe that takes in a workpiece at the end on the side of the transfer table, and is provided with a guide bar provided movably with respect to the plate,
An automatic gap adjusting means for moving the guide bar on the plate is provided, and the guide bar is moved by the automatic gap adjusting means according to the variation in the thickness of the conveyance table, so that the gap between the end of the intake pipe and the conveyance table is reduced. A workpiece transfer device characterized by adjusting. A peripheral guide is arranged on the periphery of the table base,
The automatic gap adjusting means includes a rocker arm swingably provided on the plate, an adjustment rod provided at one end of the rocker arm and penetrating the plate and contacting the peripheral guide, and provided at the other end of the rocker arm and penetrating the plate. The workpiece conveying apparatus according to claim 1, further comprising a linear shaft extending and connected to the guide bar.   3. A work conveying apparatus according to claim 2, wherein a spring is provided around the linear shaft, and the linear shaft is biased toward the rocker arm by the spring.   3. The work conveying apparatus according to claim 2, wherein the adjustment rod is attached to one end of the rocker arm so that the protruding length thereof can be adjusted.   The intake pipe is connected to a connecting pipe extending outward from the plate, and the connecting pipe is sequentially connected to a discharge pipe penetrating the plate and a relay pipe penetrating the peripheral guide. Work transfer device.   2. The workpiece transfer apparatus according to claim 1, wherein the gap between the end of the intake pipe and the transfer table is equal to or less than the thickness of the workpiece.

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