JPS62235122A - Conveyor device - Google Patents

Abstract

PURPOSE:To make delivery of a workpiece ever so easy, by constituting a cross-opposed part of a sub-conveyor, whose one end is crossed with a main conveyor conveying the workpiece, so as to cause one side to become lower than the other side. CONSTITUTION:When a workpiece 11 is mounted on a main conveyor 20, conveyed in an arrow A direction, and reaches the stop line 39, conveyance of the main conveyor comes to a stop. Two support plates 24 and 25 are installed in the main conveyor 20, and clearance grooves 24a and 25a of a sub-conveyor 45 orthogonal with the main conveyor 20 is formed in these support plates 24 and 25 in advance. A belt 71 of the sub-conveyor 45 inside the clearance groove goes up and gets rotating when the workpiece 11 reaches the stop line 39, conveying the workpiece 11 in an arrow B direction and delivering it to a belt 72. Next, the workpiece 11 is conveyed (12) and machined (10a), the it is delivered to a sub-conveyor 46. With the reverse sequence to aforesaid, the workpiece 11 is delivered to the main conveyor from the sub- conveyor 46, and the belt 71 goes down into these clearance grooves 24a and 25a. With this constitution, delivery of the workpiece is easily performable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a conveyance device, and more particularly to a conveyance device for workpieces in an assembly apparatus used for semiconductor assembly.

[Prior Art] Conventionally, as a conveying device that connects and arranges a plurality of assembly devices in parallel and supplies workpieces to these assembly devices, for example, the one shown in Japanese Patent Laid-Open No. 58-206132 is known. It is being

This structure includes a main conveyor in one row and a sub-conveyor that is disposed perpendicular to the main conveyor and supplies and discharges workpieces to and from the respective assembly devices.

[Problems to be Solved by the Invention] In the above-mentioned conventional example, the sub-conveyor is simply disposed on the side of the main conveyor, so the workpieces are transferred from the main conveyor to the sub-conveyor, and from the sub-conveyor to the main conveyor. A supply device for transferring the body, for example, a supply device for vacuum suction and transfer is required.

As described above, since a special feeding device is required, there is a problem that the device inevitably becomes expensive and that prompt delivery cannot be performed.

An object of the present invention is to provide a conveying device that can transfer workpieces between a main conveyor and a sub-conveyor without providing a special supply device.

[Means for Solving the Problem] The problem with the above-mentioned prior art is that the main conveyor is configured such that the portion facing the sub-conveyor is lower than the sub-conveyor, and the sub-conveyor is connected to the main conveyor. This can be solved by arranging the main conveyor above the main conveyor so that one end side intersects with the main conveyor.

[Operation] Since the sub-conveyor is arranged to intersect with the main conveyor, when the sub-conveyor is driven, the workpieces are transferred from the main conveyor to the sub-conveyor and from the sub-conveyor to the main conveyor.

[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

As shown in the diagram, a main conveyor 20 for conveying workpieces 11 is disposed in front of the assembly device 10.
On both sides of the processing tool 10a of the assembly device 10, loader and unloader sub-conveyors 45 and 46 are disposed such that one end crosses the main conveyor 20 and is perpendicular to the main conveyor 20. Also, sub conveyor 45 for loader and unloader
．． 46, below the processing tool 10a of the assembly device 10, there is a workpiece 11 sent from the loader sub-conveyor 45.
A transfer device 12 is provided to send the (llb) to the unloader sub-conveyor 46 from directly below the processing tool 10a.

Here, in the embodiment, a wire bonding device is illustrated as an example of the assembly device IO, but the present embodiment is not limited to this.

This wire bonding device has a well-known structure,
Moreover, since it is not directly related to the gist of the present invention, further explanation will be omitted here. Further, although the transfer device 12 is illustrated as a simple square block, for example, one shown in Japanese Patent Laid-Open No. 60-67308 is used. In this case, the above-mentioned JP-A-60-
It goes without saying that, except for the loader and unloader magazines shown in Japanese Patent No. 67308, the loader and unloader sub-conveyors 45 and 46 of this embodiment are disposed in the loader and unloader magazines. Since this transfer device 12 is not directly related to the gist of the present invention, further explanation will be omitted here.

Next, the main conveyor 20 and sub conveyor 45.4
The structure of No. 6 will be explained.

Main conveyor 20 (see FIGS. 1, 2, and 4) A conveyor stand 22 is fixed on a pedestal 21, and a main conveyor stand 23 is fixed on this conveyor stand 22. Two support plates 24 and 25 are fixed in parallel to the main conveyor table 23 at a constant interval.
Relief grooves 24a and 25a are formed in 4.25 for intersecting sub-conveyors 45.46, which will be described later.

A motor 26 is fixed to the support plate 24 on the lower right side of the center, and a boot 927 is fixed to the output shaft of the motor 26. Further, a drive shaft 29 is rotatably supported at a position above the motor 26 on the support plate 24 and a support plate 28 fixed to the main conveyor table 23 on the outside of the support plate 24. A pulley 30 is fixed to an outwardly projecting portion of the plate 24. A timing belt 31 is placed around the pulleys 27 and 30.

A boot 932 is fixed to the drive shaft 29 on the inside of the support plate 24, 25, respectively. Further, on the upper side of the support plates 24 and 25, there are respective blocks at the same level as the pulleys 32.
933 is rotatably supported. Also, the support plate 24.
A pulley 34 is also rotatably supported on the lower inner portions of the relief grooves 24a, 25a of 25, respectively. In addition, pulleys 3 are placed on the left and right inner sides below the support plates 24 and 25, respectively.
5 is rotatably supported. And the pulley 3
A belt 36 is attached to the parts 2 to 35.

Therefore, when the motor 26 is rotated in the direction of arrow A,
Pulley 27. The drive shaft 29, that is, the pulley 32 rotates in the direction of arrow B via the timing belt 31 and the pulley 30,
Belt 36 is fed in the direction of arrow C.

A sagging prevention plate 37 for preventing the belt 36 from sagging is disposed on the lower surface side of the belt 36 above the center of the support plates 24, 25. Further, a support shaft 38 is fixed to the upper left side of the center of the support plate 24, and this support shaft 38
A stopper 39, one end of which extends above the belt 36, is rotatably supported. The stopper 39 has a horizontal bent portion 39a, and the solenoid 40 is fixed to the support plate 24 such that the operating portion of the solenoid 40 comes into contact with the lower surface of the bent portion 39a. Further, a sensor 41 is fixed inside the support plate 25 in order to detect the workpiece 11 in contact with the stopper 39 .

Sub-conveyors 45, 46 (see Figures 1, 3, and 6 to 9) Since the loader sub-conveyor 45 and the unloader sub-conveyor 46 have almost the same structure, the sub-conveyors 45 and 46 are shown in Figs. 6 to 9 below. The loader sub-conveyor 45 shown in an enlarged view in the figure will be explained.

A sub-conveyor table 47 is placed on the conveyor table 22 shown in FIG.
is fixed. As shown in FIGS. 6, 8, and 9, a rotating shaft 48 is rotatably supported above the center of the sub-conveyor table 47, and four pulleys 49, 50 are mounted on this rotating shaft 48. .51.52 is fixed. Further, as shown in FIGS. 7 and 8, a fixed shaft 53 is fixed to the part of the sub-conveyor table 47 directly below the rotating shaft 48.
The fixed shaft 53 has four swing blocks 54, 55, 56.
57 is rotatably supported via a bearing 58. The swing blocks 54 and 55 are on the lower side in FIG.
In the figure, it extends to the left, and the swing block 56.5
7, on the contrary, extends upward in FIG. 7 and to the right in FIG. Swing blocks 54.55 and 56.5
An intermediate block 59,60 is fixed to each of the intermediate blocks 59,60, and four pulley support arms 61,62 are fixed to each of the intermediate blocks 59,60.

The booby support arms 61, 62 are provided with end pulleys 63-66 and 67-70, respectively, as shown in FIGS. 6 and 8.
is rotatably supported.

And pulleys 63, 49.64, 50.65 and 51.
Belts 71 are hung on 66 and 52, respectively, and similarly pulleys 67, 49.68, 50.69, 51.70 and 5
A belt 72 is also hung on each of the parts 2 and 2. Also the 9th
As shown in the figure, a motor 73 is fixed below the sub-conveyor table 47, and a belt 75 is hung between a pulley 74 fixed to the output shaft of the motor 73 and the pulley 49.

Therefore, when the motor 73 rotates forward, the pulleys 50, 51, and 52 rotate via the pulley 74 and the belt 75, so that the belts 71, 72 are fed in the direction of the arrow as shown in FIG. Also, if the motor 73 rotates in the opposite direction, the belt 71
．． 72 is reversed in the direction of arrow E. That is, in the loader sub-conveyor 45, the belts 71, 72 are rotated in the direction of the arrow E, and in the unloader sub-conveyor 46, the belts 71, 72 are rotated in the direction of the arrow E.

As shown in FIGS. 8 and 9, the swing block 54
．． 57 has tongue pieces 54a and 57a extending downward, and receiving screws 80 are screwed into the tongue pieces 54a and 57a, respectively. A cylinder 81 with a speed controller fixed to the sub-conveyor stand 47 is attached to the receiving screw 80.
The operating parts 82 are provided facing each other, and the receiving screw 80
The rocker block 54,57 is biased by a spring 83 so that it presses against the actuating part of the cylinder 81,82.

Further, a detection plate 84.85 is fixed to the swing block 54.57, and a sensor 86.87 is fixed to the sub-conveyor table 47 with the detection plate 84.85 sandwiched therebetween.

Therefore, when the actuating part of the cylinder 81.82 is actuated and protrudes, the swinging block 54.57 rotates about the fixed shaft 53 via the receiving screw 80, which causes the pulley to move via the intermediate block 59.60. Support arms 61, 62 rotate, pulleys 63-66 descend in the direction of arrow F, and pulleys 67-70 rise in the direction of arrow G. In addition, when the actuating parts of the cylinders 81 and 82 are actuated and retracted, contrary to the above, the pulleys 63 to 66 rise in the direction of arrow H, and the pulleys 63 to 66 move upward in the direction of arrow H.
7 to 70 descend in the direction of the arrow.

As shown in FIGS. 6, 7, and 8, two workpiece guide plates are formed in the pulley support arm 62 portion with relief grooves 90a and 91a for allowing the pulley support arm 62 to escape. 90.91 are arranged perpendicularly to the belt 72. One workpiece guide plate 90 is fixed to the sub-conveyor table 47, is formed lower than the other workpiece guide plate 91, and also serves as a stopper for the workpiece 11. The other workpiece guide plate 91 is slidably provided on a shaft 92 fixed to the one workpiece guide plate 90.

Therefore, the workpiece guide plate 9 is adjusted according to the width of the workpiece 11.
1, and attach the workpiece guide plate 91 with a screw (not shown).
is fixed to the shaft 92.

Further, a bushing angle 93 is slidably provided on the shaft 92, and the bushing angle 93 is fixed to the shaft 92 with a screw (not shown). A buttonhole frame 94 is fixed to the buttonhole angle 93, and a cylinder 95 is fixed to the buttonhole frame 94. A button arm 96 is fixed to the operating rod of the cylinder 95, and the button arm 96 is provided to move along a rotation stop plate 97 fixed to the button frame 94.

The members indicated by part numbers 90 to 97 described above are provided only on the loader-side sub-conveyor 45 and are not provided on the unloader-side sub-conveyor 46; instead, they are provided on the unloader-side sub-conveyor 46. An upper plate 98 that supports the workpiece 11 sent from the transfer device 12 shown in FIG. 1 is fixed to the sub-conveyor table 47 as shown by the two-dot chain line.

FIG. 10 shows an application example in which a plurality of conveying devices having the above-mentioned configuration are combined, each of the bonding devices 12A and 12B.
・◆・ The workpiece 11 is sent out from the loader magazine 13, and each of the pounding devices 12A, 12B--
- The processed workpiece 11 is the unloader magazine 14
will be stored in. Here, for convenience of explanation, each unit is
The symbols A, B, Cφ and ◆ are subscripted to the numbers sequentially from left to right.

Next, the operation of the conveying device having such a configuration will be explained. Now, a case where a request for the workpiece 11 is made only from the second loader sub-conveyor 45B shown in FIG. 10 will be described. The stopper 39 shown in FIG. 1, FIG. 4, and FIG.
It is located below the conveyance level. Therefore, when a request signal for the workpiece 11 is output from the loader sub-conveyor 45B, the workpiece 11 is delivered from the loader magazine 13 onto the main conveyor 20A, and the solenoid 40 of the main conveyor 20B is activated. When the solenoid 40 operates, the stopper 39
8 and rises to the state shown in FIG. Therefore,
The workpiece 11 sent out from the loader magazine 13 is conveyed in the direction of arrow C by the belt 36 of the main conveyor 20A, and the soil of the main conveyor 20A simply passes through and is sent onto the main conveyor 20B.

When the workpiece 11 is conveyed by the main conveyor 20B, it comes into contact with the stopper 39.

When the sensor 41 shown in FIG. 1 provided on the main conveyor 20 detects the workpiece 11, the motor 73 shown in FIG. 9 of the loader sub-conveyor 45B starts, and the cylinder 81 protrudes. It operates. When the motor 73 is started, the belts 71, 72 operate in the direction of the arrow, as explained in the section regarding the sub-conveyors 45, 46.

Also, when the cylinder 81 operates, the sub conveyor 45.4
As explained in section 6, the pulleys 63 to 66 rise in the direction of arrow H shown in FIG. That is, the pulleys 63 to 66 of the loader sub-conveyor 45B rise from the state shown in FIG.
and is lifted off the belt 36 of the main conveyor 20. There, the workpiece 11 is sent in the direction indicated by the arrow by the movement of the belts 71 and 72, and comes into contact with the workpiece guide plate 90 shown in FIG. Workpiece guide plate 90.91
If there is a workpiece 11 in between, the workpiece 11
maintains a state in which it is in contact with the workpiece guide plate 90. In FIG. 1, 11a represents the workpiece 11 in contact with the workpiece guide plate 90, and llb represents the workpiece guide plate 90.
In other words, two workpieces 11 can be held on the loader sub-conveyor 45 (45B).

When the workpiece 11 is between the workpiece guide plates 90 and 91, the motor 73 stops rotating and the cylinder 8
1 retracts, and as a result, the belts 71 and 72 stop, and the pulleys 63 to 66 descend in the direction of arrow F shown in FIG. 8, so that the belt 71 is located below the conveyance level of the belt 36 of the main conveyor 20. At the same time, the solenoid 40 is also turned off, and the stopper 39 is located below the conveyance level by the belt 36.

If the workpiece 11 is not present between the workpiece guide plates 90.91 or if the workpiece 11 is sent out from the workpiece guide plate 90.91, the rotation of the motor 72 continues or starts, and the belt 71.72 moves in the direction of the arrow G, the cylinder 82 operates, and the pulleys 67 to 70 rise in the direction of the arrow G. As a result, the belt 72 is connected to the workpiece guide plate 90.
The workpiece 11, which has been positioned higher and positioned on the workpiece guide plate 90, is lifted. Then, the workpiece 1
1 is sent by a belt 72, and the workpiece guide plate 91
comes into contact with. Thereafter, when the motor 73 stops, the cylinder 82 retracts and the pulleys 67 to 70 descend in the direction of the arrow. Due to this.

The workpiece 11 on the belt 72 is placed on the workpiece guide plate 90.
91.

When there is a request from the assembly device 10, the cylinder 95 is activated and the pusher arm 96 moves the workpiece guide plate 90.
The workpiece 11 on the 91 is sent out to the transfer device 12 side. Then, it is intermittently sent one pitch by the transfer device 12, and processed by the processing device 10 each time. When the processed workpiece 11 is sent onto the upper plate 98 of the loader sub-conveyor 46 shown in FIGS. 3 and 8, that is, to the position indicated by the workpiece lie in FIG. 1, the loader sub-conveyor 46 motor 73 rotates and belts 72, 71 move in the direction of arrow E, cylinder 82 operates and pulleys 67 to 70 rise.

When the pulleys 67 to 70 rise, the workpiece 11 on the upper plate 98 is lifted by the belt 72. As a result, the workpiece 11 is sent in the direction of arrow E by the belts 72, 71, comes into contact with the side wall of the support plate 24, and stops. Then cylinder 8
2 retracts, and the pulleys 67 to 70 descend.

When the workpiece 11 is not flowing on the main conveyor 20 and the unloader magazine 14 is in the receiving position, the cylinder 81 is operated and the pulley 63
~66 rises and lifts the workpiece 11 above the support plate 24. As a result, the workpiece 11 is sent in the direction of arrow E by the belt 71 and comes into contact with the inside of the support plate 25 . Thereafter, the cylinder 81 retracts and the pulleys 63 to 66 descend. As a result, the workpiece 11 is placed a on the main conveyor 20, transported by the main conveyor 20, and stored in the unloader magazine 14.

In the above embodiment, the sub-conveyors 45 and 46 are disposed perpendicularly to the main conveyor 20, but they may be disposed diagonally across the main conveyor 20. Further, the portion where the main conveyor 20 and the sub conveyor 45.46 intersect and face each other is located above the main conveyor 20.
46 was arranged, but conversely, the sub conveyor 45
, 46, the main conveyor 20 may be arranged above them.

[Effects of the Invention] As is clear from the above description, according to the present invention, the main conveyor is configured such that the portion facing the sub-conveyor is lower than the sub-conveyor, and the sub-conveyor is lower than the main conveyor. Since it is arranged above the main conveyor so that one end side intersects with the main conveyor, it is possible to transfer the workpieces between the main conveyor and the sub-conveyor in a special way! This can be done without any equipment.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an overall schematic configuration of an embodiment of the present invention;
Figure 2 is a partially cross-sectional right side view showing the relationship between the main conveyor and processing equipment in Figure 1, Figure 3 is a right side view showing the relationship between the sub-conveyor and processing equipment in Figure 1, and Figure 4 is the main conveyor. 5 is a left side view showing the stopper section provided on the main conveyor, FIGS. 6 to 9 show the sub conveyor, FIG. 6 is a partially sectional plan view, and FIG. 7
The figure is the same plan view as Figure 6 showing the fixed shaft part in cross section, and Figure 8 is the same plan view as Figure 6.
The figure is a right side view, FIG. 9 is a front view, and FIG. 10 is a plan view showing an application example in which a plurality of conveying devices according to the present invention are used in combination. 11: Workpiece, 20: Main conveyor. 45:46: Sub conveyor. Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] The main conveyor conveys the workpiece, and the sub-conveyor is disposed so as to face the main conveyor with one end intersecting with the workpiece, and supplies and discharges the workpiece to the assembly device. 1. A conveying device characterized in that the portions that intersect and face the conveyor are configured such that one is lower than the other.