JPH0122103B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a processing machine that makes a large number of holes (through holes) in a printed circuit board, in which a workpiece that has been stored in a predetermined position is taken out and set in the processing position, and after processing, the workpiece is This invention relates to a loading device for a printed circuit board drilling machine that takes out the printed circuit board and stores it in a predetermined position.

In FIGS. 1 to 3, I is an NC-controlled drilling machine, 1 is its work table, and 2 is a plurality of sets (four sets in this embodiment) of spindles.
Or a tool magazine device for an automatic tool changer.

Figure 4 shows a workpiece, in which three printed circuit boards 3 are superimposed, and a patch plate 4 is placed on the top surface of the three printed circuit boards 3.
At the same time, place a set of locating pins 6 into the predetermined positions on the front and rear of the set, each with the bottom plate 5 applied.
The lower end of the holder is slightly protruded downward.

In this way, multiple printed circuit boards 3
To perform drilling on a workpiece that is integrated with
Conventionally, as shown in Fig. 5, a worker holds each workpiece in his hand and sets it at a predetermined position on the worktable 1, and after processing, the worker removes the workpiece from the worktable 1 by hand again and sets it in the predetermined position. It was carried to the position of In the figure, 1a is a bush provided in the work table 1 for fitting one of the locating pins 6 of the workpiece, 1b is a groove provided in the work table 1 for inserting the other locating pin 6, and 1c is a groove provided in the work table 1 for inserting the other locating pin 6. This is a plate for forming this groove 1b.

As mentioned above, conventionally, when setting a workpiece on the worktable 1 and when removing a processed workpiece from the worktable 1, a worker had to do it by hand, which not only reduced work efficiency but also caused The disadvantage was that costs increased due to increased labor costs.

The present invention has been made to solve these drawbacks, and includes a large number of pallets on which several sets of workpieces can be placed, and these pallets are stacked so that they can be pulled out and stored in a storage cabinet that can be raised and lowered. During drilling, the pallets are loaded from the storage using a pull-out device connected to the drilling machine.
The workpieces are pulled out to the loading position, each workpiece on the pallet is lifted up by the loading device installed on the pullout device, transferred to the work table of the drilling machine, and set in the workpiece setting device.After processing, the workpieces are lifted up by the loading device. by returning the pallet to the loading device and placing the work on the pallet, returning the drawer device to store the pallet in the storage, and then moving the pallet up and down one step,
The purpose is to significantly improve the working efficiency of processing machines and reduce costs, as well as to enable automation and labor saving.

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

Figure 6 shows a pallet on which multiple sets (four sets in this example) of workpieces are placed.
is the front frame (frame on the drilling machine side), 8 is the rear frame, 9
1 is a horizontal frame, 10 and 11 are work supporting members extending between the front frame 7 and the rear frame 8, and 12 is a wide member 1.
1 is a locate pin fitting hole provided, and 13 is a locate pin guide groove. Also, 14 is two hooks drilled in the front of the front frame 7, 15 is two handles protruding to the rear of the rear frame 8, 16 is a license plate provided on the rear frame 8, and 17 is a horizontal frame 9. A guide block 18 protrudes outward from the guide block 17.
This is a stopper that protrudes from the upper surface of the front end. In the present invention, a large number of the above-mentioned pallets (15 in this embodiment) are prepared.

Next, as shown in FIGS. 2 and 3, a storage cabinet is installed at an appropriate distance from the hole punching machine to store a large number of stacked pallets that can be pulled out and moved up and down.

Figures 7 to 13 show the details of the storage, where 19 is the four pillars that make up the storage, 20 is a beam member that connects the upper ends of the pillars 19, and 21 is the two pillars on both sides. This is a connecting member installed horizontally in the middle of the support column 19.

Or, it is a pallet storage frame that allows you to stack and store a large number of pallets that can be pulled out.
is the upper frame, 23 is the lower frame, 24 is the upper frame 22 and the lower frame 23
The vertical members 25 connecting the pallet storage frames to form a box-like pallet storage frame are side wall plates fixed to the insides of the vertical members 24 on both sides. Reference numeral 26 denotes a plurality of pallet guide rollers arranged vertically and horizontally (in this embodiment, 15 in the vertical direction and 5 in the horizontal direction) with respect to the side wall plate 25.
By placing pallet guide blocks 17 on each of these rollers 26, 15 pallets can be stacked and stored in the frame in a drawable manner.

Therefore, as shown in Fig. 13, each stored pallet can be pulled out in the direction of arrows M and N by holding the handle 15, and a workpiece can be placed at that position, or a processed workpiece can be taken out. However, 27 has side wall plate 25 to hold the pallet almost horizontally when it is pulled out.
28 is a stopper for preventing the pallet from coming off, which engages with the stopper 18 of the pallet to prevent the pallet from coming off.

Further, the pallet storage frame formed into a box shape as described above is attached to the storage so that it can be moved up and down.

Reference numeral 29 in FIGS. 8 and 11 is a guide roller for lifting the frame, and 30 is a roller holder bored into the side wall of the frame to hold the roller 29. The roller 29 moves the frame up and down along the support 19. invite.

In order to drive this frame up and down, a boss portion 31 is bored in the center of both side frames of the upper frame 22 of the frame so as to face outward, and a nut 3 is inserted into the boss portion 31.
2 is provided, and an elevating screw shaft 33 screwed into this nut 32 is provided perpendicularly between the supports 19 on both sides of the storage. 34 is the upper bearing of this screw shaft 33; 35 is the upper bearing of this screw shaft 33;
is the lower bearing (see Figures 7 and 8).

Further, 36 is a plate provided on the upper surface of the beam member 20 at the upper part of the storage, 37 is a motor for lifting and lowering installed on this plate 36, 38 is a speed reducer,
39 is the output shaft of this reducer 38 and the coupling 4
0, and 41 is a bearing of this drive shaft 39. Also, 42 and 43 are drive shafts 39
This is a bevel gear for transmitting the rotation of the screw shaft 33 to the screw shaft 33.

Therefore, by rotating the motor 37 in forward and reverse directions, the pallet storage frame can be raised and lowered.

Further, 44 (see Figures 9 and 10) has hinges 45 on the inside of the two outer columns 19 of the storage.
A pallet guide door that can be opened and closed via the
46 is a handle protruding from the door 44. Further, 47 is a stopper when the door 44 is closed, 48 is a magnet that attracts the door 44 when the door 44 is closed, and 49 is a guide plate attached to the back of the door 44, which prevents the pallet stored in the frame from falling out. do. Also 50 (see Figures 7 and 11)
1 is a stopper plate for preventing pallets from popping out, which is protruded inward from two pillars 19 inside the storage. There is a notch (see Figure 7).

Further, as shown in FIGS. 2, 3, 7, 11, and 14, a frame 52 is provided between the punching machine and the storage, and a pallet pulling device is installed on this mount 52.

This pull-out device pulls out pallets in a storage to a predetermined loading position on a pedestal 52. First, a large number of guide rollers 53 are arranged in parallel on the pedestal 52 to support both lower surfaces of the pallets. (See FIGS. 7 and 14) 54 is a channel-shaped roller holding member, and 55 is a pedestal that supports the member 54 on the pedestal 52. Further, 56 is a guide roller bracket that protrudes upward from both sides of the pedestal 52.
57 is a channel-shaped roller holding member protruding inwardly from this bracket 56, and 58 is this member 57.
A large number of guide rollers are arranged in parallel inside the pallet to guide both sides of the pallet.

In addition, 59 (see Figures 11 and 14) is a stopper support installed on the side of the drilling machine of the pedestal 52.
60 is a bracket fixed to this support 59, 61
62 is a lock nut thereof, and 63 is a stopper part provided on the front frame 7 of the pallet.

Further, 64 is a stroke cylinder installed in the center of the frame 52, 65 is a slide block of the stroke cylinder 64, 66 is a hook attachment plate fixed on the slide block 65 via a spacer 67, and 68 is this plate. Hooks are provided on both sides of the pallet 66 to engage with the hooks 14 of the pallet.

Therefore, when the pallet storage frame is raised one step by operating the stroke cylinder 64 and moving the hook 68 to the right side in FIGS. engage. In this engaged state, by operating the stroke cylinder 64 to move the slide block 65 to the left, the pallet can be pulled out to the loading position shown in FIGS. 7 and 11.

Further, this pulled out pallet can be returned into the pallet storage frame by operating the stroke cylinder 64 mentioned above.

Also 2nd, 3rd, 7th, 12th, 14th, 15th, 16th,
As shown in Figures 17 and 18, a loading device is provided on the withdrawal device. Reference numerals 69 (see Fig. 14) denote two left and right columns erected at appropriate intervals on both sides of the pedestal 52, 70 a girder frame extending between the upper ends of the left and right columns 69, and 71 a girder frame. This is a connecting beam between frames 70.

Reference numeral 72 denotes two girders fixed below the girder frame 70 via a spacer 73. There is. Directly below this girder 72, a stroke cylinder 74 (see FIGS. 14 and 15) for moving the manipulator is provided in parallel with the girder 72, and a guide bar 76 is connected to each side of the stroke cylinder 74 via brackets 75. It is provided in parallel with 74. 77 is a slide block of the stroke cylinder 74, and a carrier plate 78 is fixed to the lower surface of this slide block 77, and the guide bar 76 is slidably fitted to the left and right sides of this carrier plate 78. Guide block 7
9 is provided to protrude upward. Further, a manipulator plate 80 is fixed to the lower surface of the left and right sides of the carrier plate 78, respectively, and an air cylinder 81 for lifting and lowering the manipulator is installed in the middle part of the manipulator plate 80, as shown in FIG.
A manipulator upper plate 83 is connected to the lower end of the piston rod 81a of the air cylinder 81 via a connector 82. Also 84
85 is a hollow cylindrical guide provided vertically through the manipulator plate 80 at the front and rear of the air cylinder 81, and 85 is a guide bar slidably passing through this guide 84, the lower end of which is connected to the manipulator plate 80, respectively. It is fixed to the upper plate 83 for use.

In addition, the upper plate 83 for the manipulator includes
As shown in detail in FIGS. 16, 17, and 18, brackets 86 and 87 are provided at the front and rear ends of the plate 83 to project downward, respectively, and two mutually parallel guides are provided between the brackets 86 and 87. A bar 88 is provided across the bar 88, and two holders 89 and 90 are slidably fitted to these two guide bars 88, and a movable claw guide plate 91 is fixed to the lower ends of these holders 89 and 90. A clamping air cylinder 92 is provided parallel to the guide bars 88 between the bracket 87 and the holder 90 between the two guide bars 88. 92a is a piston rod of the air cylinder 92, 93 is a connector connecting the piston rod 92a and the holder 90, and 94 is a lock nut.

Further, screw holders 95 and 96 are provided at the front and rear ends of the movable claw guide plate 91, respectively, projecting downward, and a claw feeding screw 97 is rotatably provided between these holders 95 and 96. An extension shaft 97a that integrally passes through the holder 96 can be rotated by a pulse motor 98. The claw feed screw 97 has a movable claw 9.
9 are screwed together, and claw guide blocks 100 (see FIG. 18) are fixedly provided on both sides of the plate 91 on both sides of the movable claw 99, and the lower end of the bracket 87 facing the movable claw 99 is provided on both sides of the movable claw 99. is formed as a fixed claw 87a. Note that 101 is the claw 87
This is a patch provided inside the a.99.

Since the loading device is constructed as described above, the pawl feeding screw 97 is
By rotating the movable claw 99, screw 97
The distance between the fixed claw 87a and the fixed claw 87a can be adjusted by moving the fixed claw 87a. Therefore, the size of the workpiece can be adjusted by moving the moving claw 99.

Furthermore, when the clamping air cylinder 92 is extended, the plate 91 moves relative to the plate 83 via the holder 90 in the direction of arrow O in FIG. Conversely, if the clamping air cylinder 92 contracts, the plate 91 moves in the direction of arrow P relative to the plate 83, so the distance between the fixed claw 87a and the movable claw 99 becomes smaller. Therefore, by operating this clamping air cylinder 92, the claw 8
7a, 99 can hold and release the workpiece.

Further, the upper plate 83 for the manipulator can be raised and lowered by operating an air cylinder 81 provided perpendicularly to the manipulator plate 80, and the manipulator plate 80 can be moved up and down via the carrier plate 78 and the slide block 77. By operating the stroke cylinder 74, it is possible to move back and forth along the guide bar 76 via the guide block 79.

Next, the operation of the loading device of the printed circuit board drilling machine of the present invention constructed as described above will be explained.

First, as shown in FIG. 4, a workpiece made by overlapping and integrating a plurality of printed circuit boards 3 is placed on a pallet shown in FIG. 13, multiple (four in this example)
The workpiece is set at a predetermined position on the pallet (see Fig. 11).

In this embodiment, 15 pallets as described above are prepared, and these are inserted through each guide roller 26 into the pallet storage frame at the lowered position in the storage as shown in FIGS. 7, 8, and 9. . Note that when inserting this pallet, the pallet guide door 44
The door 44 is left open, and when the insertion of the pallet is completed, the door 44 is closed.

Next, the stroke cylinder 6 of the drawer device
4 to move the hook 68 shown in FIG. 11 toward the storage compartment, and then drive the motor 37 to rotate the lifting screw shaft 33 to move the pallet storage frame one pallet storage stage. raise.

This causes the hook 14 of the uppermost pallet in the frame to rise and engage the hook 68 of the extractor. Therefore, in this state, if the stroke cylinder 64 is operated to move the slide block 65 toward the processing machine, the pallet will move in the direction of arrow Q in FIG. 11 via the plate 66 and hooks 68 and 14. It is pulled out to the loading position shown in FIG. This pallet movement is carried out by guide rollers 26, 53, 5.
8, the stopper 61 and the stopper 6
Stop at the collision position 3.

Next, move the manipulator of the loading device from the state shown in Figs. 7 and 12 to the 16th position.
After extending the clamping air cylinder 92 shown in Fig. 18 to bring the claws 99, 87a to the open position, operate the manipulator lifting air cylinder 81 to lower the manipulator so that the claws 99, 87a can clamp the workpiece, Air cylinder 92
By contracting, the workpiece is held between the claws 99 and 87a as shown in FIG.

Once the workpiece is clamped, the air cylinder 81
7 to raise the manipulator to the position shown in FIG. 7, and then operate the stroke cylinder 74 shown in FIGS. 14 and 15 to raise the slide block 7.
The manipulator attached to the manipulator plate 80 via the carrier plate 7 and the carrier plate 78 is moved in the direction of arrow R in FIG. The manipulator is stopped by operating the lifting air cylinder 81 to lower the manipulator. Then, place the locate pin 6 of each work into the hole and groove 1b of the bush 1a of the work table 1.
(See Figure 5) to position each workpiece. In this way, each work (in this example, 4
Once the workpieces 99 and 87 are set on the work table 1, the clamping air cylinder 92 is extended and the movable claw 99 is moved.
The workpiece is released from between a and the manipulator is raised by the lifting air cylinder 81 and placed on standby.

The work table 1 on which the workpiece has been set is moved to the processing position of the drilling machine, and a predetermined drilling process is performed. This drilling process is performed by NC control, but if there are many types of workpieces and different types of machining are to be performed continuously, the type of machining can be determined by reading the code on the license plate 16 shown in Figure 6. Different types of machining can be performed continuously by determining the type of material and calling the appropriate program for machining.

When the drilling process is completed, the work table 1 returns to the loading position described above (see Figures 7 and 12).
Return to At this time, as described above, the manipulator waiting above is lowered by the air cylinder 81, and then the clamping air cylinder 92 is operated to clamp the work by the claws 99, 87a. Once the workpiece is clamped, raise the manipulator and move the stroke cylinder 7.
4, the manipulator moves in the direction of arrow S in Figure 7.
Move the machined workpiece in the direction of , and position the processed workpiece on the pallet in the pull-out position. Next, the manipulator is lowered by the air cylinder 81 and each processed workpiece is placed on a predetermined position on the pallet. After that, each workpiece is released by the operation of the air cylinder 92, and then the manipulator is lowered by the air cylinder 81. will rise.

Once the processed workpiece is set on the pallet, the stroke cylinder 64 of the pull-out device is operated to push the pallet into the uppermost stage of the pallet storage frame in the storage, thereby completing one cycle.

In other words, the second machining operation begins with motor 3.
7, the pallet storage frame is raised by one level. When the frame is raised by one level, the hook 14 of the uppermost pallet is disengaged from the hook 68 of the drawer, and the hook 14 of the second pallet from the top engages with the hook 68.

Therefore, if the pull-out device is operated as described above, the pallet on which unprocessed workpieces are placed will be pulled out to the loading position, and the above-described operation may then be repeated.

In other words, in the apparatus of this embodiment, it is possible to mechanically perform continuous work until all the workpieces placed on the 15-tier pallet have been processed, and finally the machined workpieces placed on the 15-stage pallet are The frame containing the pallets reaches the upper limit position of the storage, and the continuous work ends. Therefore, processed workpieces can be taken out all at once. In addition, if the empty frame is returned to the lowered position and the pallet with unprocessed workpieces placed on it is stored again and machining work is restarted, the machine will continue to work until all the stored workpieces have been processed as described above. Able to work continuously.

Note that the series of operations of the apparatus of the present invention described above can be easily automated by using a computer or the like, and can be operated unmanned for a long time.

Therefore, according to the loading device for a printed circuit board drilling machine of the present invention, the working efficiency of the processing machine can be significantly improved and costs can be reduced.
An excellent effect can be obtained in that automation can be facilitated and labor can be saved.

[Brief explanation of drawings]

Fig. 1 is a front view of a printed circuit board drilling machine equipped with the device of the present invention, Fig. 2 is a side view showing a part of the machine in cross section, Fig. 3 is a plan view thereof, and Fig. 4a is a A front view of a workpiece in which printed circuit boards are combined and integrated, FIG. 5B is a plan view thereof, and FIG. Figure b is a plan view thereof, Figure 6 is a perspective view of a pallet used in the apparatus of the present invention, Figure 7 is a side view of the apparatus of the present invention, and Figure 8 is a cross-sectional view taken along line A--A in Figure 7. Figure 9 is the 7th
10 is a sectional view taken along line C-C in FIG. 9, FIG. 11 is a cross-sectional plan view taken along line D-D in FIG. 7, and FIG. 12 is a cross-sectional view along line E-- Fig. 13 is a partial elevational view showing the inside of the pallet storage frame in the storage, Fig. 14 is a plan view taken from arrow F-F in Fig. 7, and Fig. 15 is a plan view taken from Fig. 14. -G sectional view, 1st
6 is a longitudinal cross-sectional view of the manipulator, FIG. 17 is a plan view taken along line H--H in FIG. 16, and FIG. 18 is a cross-sectional view taken along line II in FIG. 16. ...NC-controlled drilling machine, 1...work table, 2...spindle, ...tool magazine device of automatic tool changer, ...workpiece,
3...Printed circuit board, 6...locating pin,...
...Pallet, 12...Locate pin fitting hole, 13
... Locate pin guide groove, 14 ... Hook,
... Storage, 37 ... Motor, ... Pallet storage frame, ... Drawer device, 52 ... Frame, 64 ... Stroke cylinder, 68 ... Hook, ... Loading device, 69 ... Support column, 7
0... Girder frame, 74... Stroke cylinder for manipulator movement, 76... Guide bar, 80... Manipulator plate, 81...
Air cylinder for lifting manipulator, 83... Upper plate for manipulator, 87a... Fixed claw, 88... Guide bar, 91... Guide plate for movable claw, 92... Air cylinder for clamp,
97...Claw feeding screw, 98...Pulse motor,
99...Moving claw.

Claims (1)

[Claims] 1. A storage area in which a pallet storage frame, in which multiple sets of workpieces can be positioned and placed using the locating pins 6, are stored in a stacked state that can be pulled out, and which can be raised and lowered, and a hole-drilling machine and the storage area. The stroke cylinder 64 provided on the frame 52 allows the pallet hook 14 and the hook 68 on the stroke cylinder 64 side to
A pull-out device that pulls out pallets in the storage to the loading position and returns the pulled-out pallets to the storage via the girder 72 installed horizontally above the stroke cylinder 64.
A stroke cylinder 74 is provided below the manipulator plate 83, and an upper plate 83 for the manipulator is movable up and down via an air cylinder 81 provided on the manipulator plate 80 which slides by the stroke cylinder 74. The workpiece is lifted from the pallet at the loading position through a workpiece clamping and releasing device that is opened and closed by the clamping air cylinder 92 and set at the workpiece setting position of the drilling machine, and the workpiece is lifted from this setting position and returned to the loading position. A loading device for a printed circuit board drilling machine, comprising: a loading device for returning printed circuit boards onto a pallet.