JPH0532178B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a component mounting machine that automatically mounts electronic components such as chip resistors and chip multilayer capacitors onto a substrate (plate-like workpiece) constituting an electronic circuit. The present invention relates to a plate-like workpiece conveying device that is mainly used.

BACKGROUND TECHNOLOGY A work table includes a carrier that holds a plate-like workpiece and moves in the X direction (second direction) on a table body that moves in the Y direction (first direction), and a carrier that moves in the X direction (second direction). a loader that supplies a plate-shaped work to the table, and is configured such that when the work table moves to a connection position that corresponds to the loader in the Y direction, the plate-shaped work of the loader is transferred to the work table. Workpiece conveyance devices are widely used in working machines such as electronic component mounting machines.

The conventional plate-shaped workpiece conveyance device was developed in
As an example is shown in Publication No. 12565, when the work table moves to a connection position that matches the loader in the Y direction, one plate-shaped workpiece is transferred from the loader to the work table. has been done. Therefore, each time a predetermined operation on a plate-shaped work on the work table is completed, the work table returns to the connection position and receives the next plate-shaped work from the loader. If the loading time for a shaped workpiece is 5 seconds, then the loading time required for 10 plate shaped works is 50 seconds.

Problems to be Solved by the Invention In the above-mentioned conventional plate-shaped work transfer device, each time a plate-shaped work is fed from the loader to the work table, the work table moves in the Y direction between the work position and the connection position. Since it has to move back and forth, loading time becomes longer, which causes a reduction in the operating efficiency of working machines such as electronic component mounting machines.

An object of the present invention is to provide a plate-like workpiece conveying device that can shorten the loading time.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a table main body that moves in a first direction, for example, the Y direction.
A work table provided with a carrier that holds a plate-shaped work and moves in a second direction different from the first direction, for example, the X direction, and a loader that supplies the plate-shaped work to the work table, In a plate-shaped work transfer device configured so that plate-shaped workpieces on the loader are transferred to the work table when the work table moves to a connection position that corresponds to the loader in the Y direction, multiple plate-shaped workpieces are temporarily transferred. a stock portion for holding the work table is provided on the work table;
The work table is provided with a transfer means for transferring the plate-like works in the stock section one by one to the carrier, and when the work table moves to the connection position, a plurality of plate-like works are simultaneously transferred from the loader to the stock section. The present invention is characterized in that it is provided with means for supplying a workpiece.

Effects The present invention, with the above-described configuration, can simultaneously supply a plurality of plate-shaped workpieces on the loader to the work table, so when, for example, 10 plate-shaped workpieces are simultaneously fed, compared to the conventional example. By doing so, the number of loading times and, ultimately, the loading time can be reduced to 1/10.

Further, a plurality of plate-like workpieces held in the stock portion of the work table are transferred one by one to the carrier and can be subjected to predetermined work.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The illustrated embodiment is an application of the present invention to an electronic component mounting machine. A loader 1, a work table 2, and an unloader 3 are arranged in one row in the X direction on the workpiece conveyance line.

The table body 4 of the work table 2 is guided by guide rails 5, 5 arranged in the Y direction, and is driven by a feed screw 6 to move in the Y direction. 7 is a drive motor that rotates the feed screw 6 in forward and reverse directions.
A pair of guide rails 8, 8 for guiding and supporting a workpiece (substrate) a is disposed on the upper surface of the central portion of the table body 4 in the X direction. Further, on the upper surface of the table body 4, a carrier 9 is disposed that holds a plate-like workpiece a over substantially the entire length in the X direction and moves in the X direction.

The carrier 9 is mainly composed of an endless belt 11 having locking pins 10 at predetermined intervals, and a motor 12 that drives the endless belt 11 in forward and reverse rotation directions. The engagement pin 10 engages with an engagement hole b provided in the plate-shaped workpiece a, and functions to hold the plate-shaped workpiece a. In addition, 13a and 13b are pulleys, 13c and 13d are sprockets, and 13e is a transmission chain.

A stock section 1 for temporarily holding a plurality of plate-shaped works a is provided on the loader side portion of the table main body 4.
4 is provided. Endless belt-like conveyors 16, 16 each having a plurality of protrusions 15 for supporting workpieces arranged at regular intervals are disposed on both sides of the stock section 14, respectively. These conveyors 16, 16 are moved up and down in the Z direction by driving moders 17, 17 that move synchronously, and both conveyors 16, 16
A plate-shaped workpiece a whose both ends are supported by protrusions 15 is moved up and down.

The unloader side portion of the table body 4 is also provided with a stock portion 18 for temporarily holding a plurality of plate-shaped workpieces a, and on both sides thereof there are stock portions 18 having the same structure as the pair of conveyors 16, 16. A pair of conveyors 19, 19 is provided. 20 is a protrusion, 2
1 and 21 are drive motors.

A mounting head 22 is disposed above the work table 2 for mounting the electronic component c onto a predetermined work point of the plate-shaped work a held by the carrier 9.
The work point is determined by positioning the table body 4 in the Y direction and the carrier 9 in the X direction.

The loader 1 is provided with a pair of conveyors 23, 23 similar to the stock section 14, and a plurality of plate-shaped workpieces a are held between the protrusions 24 of these conveyors 23, 23. Reference numerals 25 and 25 are drive motors, and 26 and 26 are introduction rails that guide and support the plate-shaped work a guided to the conveyors 23 and 23.

The unloader 3 is provided with a pair of conveyors 27, 27 similar to the stock section 18, and a plurality of plate-shaped works a are held between the protrusions 28 of these conveyors 27, 27. Reference numerals 29 and 29 are drive motors, and 30 and 30 are lead-out rails that guide and support the plate-shaped work a discharged from the conveyors 27 and 27.

A plurality of plate-shaped works a held at intervals in the vertical direction between the pair of conveyors 23 and 23 of the loader 1 are fed by the work supply means 31,
It is configured to be transferred to the conveyors 16, 16 of the stock section 14 at the same time. This work supply means 31 is provided on the loader 1 side, and the push plate 3
2. A main air cylinder 33 that pushes out the push plate 32 in the X direction, a support frame 34 that pivotally supports the main air cylinder 33, and a main air cylinder 33.
A sub-air cylinder 35 is provided for switching the position between a horizontal position shown by a solid line in FIG. 2 and an inclined position shown by a phantom line.

Stock part 1 on the unloader side of the work table 2
At 8, the plurality of plate-shaped works a held at intervals in the vertical direction between the pair of conveyors 19, 19 are removed by the workpiece discharging means 36.
It is configured to be transferred to the conveyors 27, 27 of the unloader 3 at the same time. This work discharge means 36 is provided on the work table 2 side, and similarly to the work supply means 31, it includes a push plate 37, a main air cylinder 38, a support frame 39, and a sub air cylinder 40.

Next, the operation of the plate-like workpiece conveying device having the above configuration will be explained.

A plate-shaped workpiece a is carried into the pair of conveyors 23, 23 of the loader 1 while being guided by introduction rails 26, 26. When one plate-shaped workpiece a is supported between a certain pair of protrusions 24, 24 of the conveyors 23, 23, both conveyors 23, 23 rotate downward by one pitch, and then the plate-shaped workpiece a to the next pair of protrusions 2
Stop at a position where it can be supported between 4 and 24. By repeating such operations, a plurality of plate-shaped works a are held between the pair of conveyors 23, 23 of the loader 1 at intervals in the vertical direction. At this time, the main air cylinder 33 of the work supply means 31 is in an inclined position as shown by the imaginary line in FIG. are doing.

The work table 2 has a table body 4 that moves in the Y direction, a carrier 9 that moves in the X direction, and 1
The plate-shaped workpiece a held by the carrier 9 is
The mounting head 22 operates to mount the electronic component c attracted to the mounting head 22 at a predetermined work point.

When the work on one plate-like workpiece a is completed, this plate-like workpiece a is transferred to the stock section 18 on the unloader side, and the pair of conveyors 19, 19
It is held between the protrusions 20, 20 of. During this transition, the engagement pin 1 of the endless belt 11
0 is engaged with the engagement hole b of the plate-shaped workpiece a,
This is done by rotating the endless belt 11 in the counterclockwise direction in FIG.
19 is lowered, and the engagement between the engagement pin 10 and the engagement hole b is released. The conveyors 19, 19 are the conveyor 2 of the loader 1.
Similarly to 3 and 23, each time a plate work a is received from the carrier 9, it is rotated downward one pitch in order, so that a plurality of plate works can be held at intervals in the vertical direction. . At this time, the main air cylinder 38 of the work discharge means 36 is in an inclined position as shown by the imaginary line in FIG. Avoiding.

When the work on one plate-shaped work a is completed, the uppermost one of the plurality of plate-shaped works a held in the stock section 14 on the loader side is moved onto the guide rails 8, 8 by the carrier 9. be forced to migrate. This transition occurs when the pair of conveyors 16, 16 of the stock section 14 rises and the engagement pin 1 of the endless belt 11 is inserted into the engagement hole b of the uppermost plate-shaped workpiece a.
0 is engaged, the endless belt 11 is rotated counterclockwise in FIG.
By repeating such operations, the plurality of plate-shaped works a held in the stock section 14 are transferred to the carrier 9 one by one.
In this embodiment, the plate-shaped workpiece a of the stock section 14 is
Transfer means 50 for transferring the files one by one to the carrier 9
is composed of the endless belt 11 provided with the engagement pin 10 and the pair of conveyors 16, 16 as described above, but the embodiment is not limited thereto.

As described above, a predetermined number of plate-shaped works a temporarily held in the loader-side stock section 14 of the work table 2 are each subjected to a predetermined operation, and these are transferred to the unloader-side stock section 18. When the process is finished, the work table 2 moves back to the connection position that coincides with the loader 1 and unloader 3 in the Y direction.

When the work table 2 returns to the connected position, the work supply means 31 and the work discharge means 36
operate simultaneously, and a pair of conveyors 2 of loader 1
At the same time, the plurality of plate-like workpieces a held between 3 and 23 are transferred between the pair of conveyors 16 and 16 of the loader-side stock section 14, and the conveyors 16 and 16 of the unloader-side stock section 18 are transferred simultaneously. 1
The same number of plate-shaped workpieces a held between 9 and 19 are simultaneously transferred to the pair of conveyors 27 and 19 of the unloader 3.
The transfer will be completed within 27 days. At this time, the main air cylinders 33 and 38 of the workpiece supply means 31 and the workpiece discharge means 36 are both switched to the horizontal position as shown by solid lines in FIG. 2, and push the push plates 32 and 37 to the right in FIG. By doing so, it is possible to move a plurality of plate-shaped works a to the right at once. Note that the pair of conveyors 23 of the loader 1,
23 and the pair of conveyors 16, 16 of the loader side stock section 14 are in line with each other, and the pair of conveyors 20, 20 of the unloader side stock section 18 and the unloader side stock section 18 are aligned with each other. The corresponding protrusions 20, 28 of the pair of conveyors 27, 27 of No. 3 are also in line with each other, and the plate-shaped workpiece a is transferred.

The present invention can be configured in various ways other than those shown in the above embodiments. For example, the unloader-side stock section 18 and the unloader 3 are not essential, and may be configured so that the plate-shaped work a after a predetermined work has been performed on the work table 2 can be discharged by other discharge means. Good too.

Effects of the Invention Since the present invention has the above configuration, a plurality of plate-shaped workpieces can be simultaneously supplied from the loader to the work table, and as a result, the loading time can be significantly shortened compared to the conventional example.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the main parts of an embodiment of the present invention, FIG. 2 is a central longitudinal sectional side view, and FIG.
It is a sectional view taken along the line - in the figure. DESCRIPTION OF SYMBOLS 1... Loader, 2... Work table, 4... Table body, 9... Carrier, 14... Stock part, 31... Work supply means, 50... Transfer means, a... Plate-shaped work.

Claims (1)

[Claims] 1. A work table including a carrier that holds a plate-shaped work and moves in a second direction different from the first direction on a table main body that moves in a first direction, and a loader for supplying a shaped work, and configured such that when the work table moves to a connection position corresponding to the first direction with respect to the loader, the plate-like work of the loader is transferred to the work table. In the workpiece conveyance device, the work table is provided with a stock portion for temporarily holding a plurality of plate-like works, and a transfer means is provided on the work table for transferring the plate-like works of the stock portion one by one to the carrier. ,
1. A plate-shaped work conveying device, characterized in that a work supply means is provided for simultaneously transferring a plurality of plate-shaped works from a loader to the stock section when the work table moves to the connection position.