JPH0154879B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides a method for stacking a plurality of printed circuit boards,
The present invention relates to a machine for driving fixing pins into stacked printed circuit boards that are closely attached to each other in the direction of stacking.

(Prior Art) As an example of the prior art, there is a structure shown in FIGS. 7 and 8.

That is, as shown in FIG. 7, for example, three printed circuit boards 4 to 4, which are also formed in a rectangular shape, are stacked on top of each other between an upper plate 2 and a lower plate 3 which are formed in a rectangular shape, and the front and rear edges thereof are A pair of reference pins 5, 5 are press-fitted and penetrated in the stacking direction, thereby providing a stacked printed circuit board 1 in which the printed circuit boards 4 to 4 are connected to each other between the upper plate 2 and the lower plate 3.

Next, as shown in FIG. 8, there was a structure in which a plurality of adhesive tapes, for example, four adhesive tapes 6 to 6, were bent in a U-shape and fixed to both the front and rear edges of the stacked printed circuit board 1.

(Problems to be Solved by the Invention) In the conventional device described above, the adhesive tape 6 can be automatically attached to the stacked printed circuit boards 1 using, for example, a clamp mechanism, but After performing the hole drilling process, when automating the peeling of the adhesive tape 6 from the stacked printed circuit board 1, the adhesive tape 6 is attached to the end surface 1a of the stacked printed circuit board 1, as shown in FIG. Since it is fixed under tension to the upper and lower surfaces 1b and 1c of the peripheral portion, extremely complicated movements are required, and automation is difficult and expensive.

In addition, since the lower part 6a of the adhesive tape 6 exists on the lower surface 1c of the peripheral edge of the stacked printed circuit board 1, when the stacked printed circuit board 1 is placed on the table 7 of the processing machine, the stacked printed circuit board 1 is A gap A is generated between the lower part 6a and the table 7, and when a large number of micro holes A for wiring are drilled through the inner part in the thickness direction in a later process, the lower edge of the hole There are disadvantages in that the holes may be damaged or chips may intervene in the gap A, reducing the accuracy of drilling.

In addition, since the side portion 6b of the adhesive tape 6 is fixed to the end surface 1a of the stacked printed circuit board 1, when the adhesive tape is peeled off, the adhesive remains attached to the end surface 1a of the stacked printed circuit board 1, which is the product. There was a drawback.

Furthermore, when the stacked printed circuit board 1 is slid along the table 7 and the guide 8 fixed upright on the table 7 during processing, the lower part 6a and side part 6b of the adhesive tape 6 that come into sliding contact with these may be damaged or turned over. There were drawbacks such as:

Therefore, in order to eliminate the above-mentioned drawbacks, the present applicant previously applied for a method for crimping printed circuit boards for processing that are piled up (Japanese Patent Application No. 61-109791).

The object of the present invention is to provide a machine for driving fixing pins into stacked printed circuit boards, which allows the above method to be carried out quickly and accurately.

(Means for Solving the Problems) In order to achieve the above object, the present invention is configured as follows.

That is, a conveyor is provided to forwardly transport stacked printed circuit boards stacked one above the other, and a guide groove into which the lower part of a reference pin penetrating the front and rear ends of the stacked printed circuit boards is slidably fitted is provided in the direction of conveyance of the conveyor. a stop mechanism that is extended and provided to temporarily stop the advance of the stacked printed circuit boards; a hole-drilling device that vertically drills pin holes above the stacked printed circuit boards at the temporary stop position of the stacked printed circuit boards; A pin driving device located on the side of the drilling device drives the pin vertically, and a cutter device whose cutting blade is close to the bottom surface of the stacked printed circuit boards are installed so that they can be moved laterally, and the hole is drilled after the stop mechanism is activated. The structure is such that a drive control device is provided to sequentially start up and laterally move the device, pin driving device, and cutter device.

(Function) Since the present invention has the above configuration, when the stacked printed circuit boards are transferred by the conveyor, the stacked printed circuit boards are moved forward while being guided by the guide grooves via the reference pins. become.

Then, when the stop mechanism is activated, the stacked printed circuit boards are stopped at the hole punching device site.

When the drive control device operates in this state, first,
The hole punching device is driven to drill pin holes at predetermined locations on the stacked printed circuit boards, then the pin driving device is driven to drive fixing pins into the pin holes, and then the cutter device is driven to cut the pin holes downward from the stacked printed circuit boards. The protruding fixing pin will be cut off.

(Example) Embodiments of the present invention will be described below based on the drawings.

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a partially sectional perspective view showing the main part, Fig. 3 is an explanatory front sectional view showing the hole drilling state, and Fig. 4 is a fixing pin. FIG. 5 is an explanatory front sectional view showing the driving state of the fixing pin, and FIG. 5 is an explanatory front sectional view showing the cutting state of the fixing pin.
FIG. 6 is an explanatory front sectional view showing the driving state of the reference pin.

In FIGS. 1 and 2, 10 is a frame extending in the front-rear direction, and on the upper surface of this frame 10, a pair of conveyors (roller conveyors) 11, 11, which face forward and have a transport function, are mounted on the left and right sides. The conveyors 11, 11 are supported in parallel, and a guide groove 12 extending in the front-rear direction is formed between each conveyor 11, 11.

At the front of the frame 10, each conveyor 11,
The column 13 that crosses above the column 11 is fixed in an upright position. This column 13 has movement axes 15 on its left and right sides.
A pair of movable tables 14, 14 are placed thereon, and each of these movable tables 1
4, 14, a pair of movable plates 16, 1 that are moved in the left-right direction by upper horizontal cylinders 17, 17;
Place 6.

Each of the movable plates 16, 16 is provided with a hole-drilling device 2 on the inside thereof with the guide groove 12 mentioned above in between.
0,20, and a pin driving device 30,3 on the outside thereof.
Attach 0 to each.

Each of the above-mentioned hole-drilling devices 20, 20 and pin-driving devices 30, 30 have the same structure. 2
This will be explained in detail with reference to the drawings.

First, the drilling device 20 connects a bracket 21 that is moved up and down by a first vertical cylinder 22 to a rail 16a formed on the left side of the movable plate 16, and a drill hole 24 is attached to the bottom of the bracket 21. The air spindle 23 is fixed in an upright position.

Further, the pin driving device 30 includes the movable plate 1
The adjustment tool 32 is attached to the rail 16b formed on the right side of 6.
A driving table 31 whose vertical movement can be adjusted is connected to the driving table 31, and a pin case 33 in which a number of fixing pins 34 are housed in parallel at the bottom is fixed to this driving table 31. A feed cylinder 35 is attached to press and move the driving table 31.

Then, the second vertical cylinder 3 is placed on the driving table 31.
A driving piston 36 that is moved downward by 7 to drive the fixing pin 34 downward is fitted into the driving piston 36.

The fixing pin 34 is made of a machinable material such as a hard plastic material or a light metal material, and has a diameter slightly larger than the diameter of the cone 24 of the drilling device 20 and a length longer than the thickness of the stacked printed circuit board 1. As shown in FIG. 4, the head (upper end) has a large-diameter collar 34a integrally formed therein.

Next, below the pin driving device 30 described above,
The cutter device 40 is arranged.

The cutter devices 40 are provided on both left and right sides of the conveyor 11 (on both left and right sides of the stacked printed circuit boards 1).

To explain the right side of the table with reference to FIGS. 2 and 3, the lower table 41, which is moved in the left-right direction by the lower horizontal cylinder 42, is moved from the outside of the conveyor 11 to the stacked printed circuit boards 1. The window hole 41a is arranged so as to be retractable directly below the stacked printed circuit board 1, and a window hole 41a is formed in a portion corresponding to the outer lower surface of the stacked printed circuit board 1 when moved directly below the stacked printed circuit board 1.

The window hole 41a is elongated in the left-right direction and shaped like a gourd in plan view, and its large diameter portion is slightly biased inwardly than the cone 24 and the driving piston 36 that have been moved directly below the stacked printed circuit board 1.

Then, the air spindles 43 are arranged upright below the large diameter portions of the window holes 41a, and the lower table 4
1, and a cutter 44 is attached to the upper part of the air spindle 43, and the cutter 44 is arranged close to the lower surface of the stacked printed circuit board 1 through the large diameter portion of the window hole 41a.

Further, a stopping mechanism 50 is provided to temporarily stop the stacked printed circuit boards 1 being transferred on the conveyor 11.
As shown in FIG. 3, this stopping mechanism 50 uses an elevating cylinder 52 to move a stopper pin 51 that protrudes and retracts from the bottom of the guide groove 12 at a predetermined pitch in the front-rear (transfer) direction near where the drilling device 20 is located. The stopper pin 51 is arranged so that the operation of the conveyor 11 is stopped at the same time as the stopper pin 51 is operated to protrude.

Reference numeral 60 denotes a drive control device that sequentially starts and laterally moves the hole punching device 20, pin driving device 30, and cutter device 40 described above.

Next, the operation mode of the above embodiment will be explained.

When the stop mechanism 50 operates, the stacked printed circuit boards 1 that have been transferred are stopped at a predetermined position on the conveyor 11, and in this state, first, each upper horizontal cylinder 1
7 is retracted to move the punching device 20 and the pin driving device 30 supported by these toward the outside of the conveyor 11, so that the punching device 20 is positioned above the outside of the stacked printed circuit board 1.

At the same time, each of the lower horizontal cylinders 42 operates to move the left and right lower tables 41 to the left and right lower surfaces of the stacked printed circuit board 1, so that each window hole 41a thereof faces directly below the hole punching device 20.

Next, the air spindle 2 of each drilling device 20
3 is activated to rotate the cone 24, and at the same time, the first vertical cylinder 22 is extended and the air spindle 2 is activated.
3 descends, thereby forming pin holes on the left and right outer sides of the stacked printed circuit board 1, as shown in FIG. After a predetermined time, the first vertical cylinder 22
is shortened to move the awl 24 upward.

Next, by the extension operation of each upper horizontal cylinder 17, each hole punching device 20 drills the pin hole above the inner side of the stacked printed circuit board 1, and each pin driving device 30 drills the pin hole at the left and right outer side of the stacked printed circuit board 1. located directly above.

Then, the second vertical cylinder 37 of each pin driving device 30 is extended and the driving piston 36 is lowered to drive the fixed pin 34 into the pin hole as shown in FIG. cylinder 3
7, the driving piston 36 is returned upward.

Next, the air spindle 4 of each cutter device 40
3 starts, each cutter 44 rotates, and at the same time, each lower horizontal cylinder 42 operates to rotate each cutter 4.
4 moves outward while rotating around the vertical axis. As a result, as shown in FIG.
1, it moves toward the outside of the conveyor 11.

While repeating the above operations, the fixing pins 34 are driven into both left and right ends of the stacked printed circuit board 1 at a predetermined pitch.

In addition, in FIG. 1, 70 is a reference pin driving machine provided at the transfer start end side of the conveyor 11, and a reference pin driving machine 70 is provided at the front and rear parts of the front column 71 extending in the front and rear direction.
A pair of movable tables 72 that are spaced apart in the front-rear direction by a moving shaft 73 are placed, and a pair of movable plates 74 that are moved in the front-rear direction by a horizontal cylinder 75 are placed on each movable table 72.

Each movable plate 74 is provided with a hole-drilling device 80 and a pin-driving device 8 having substantially the same structure as the above-described hole-drilling device 20 and pin-driving device 30.
5 is arranged and attached above the guide groove 12.

The reference pin 5 supplied to the pin driving device 85 is formed into a rod shape from a metal material, and as shown in FIG. It is set to protrude significantly downward and fit into the guide groove 12.

(Effects of the Invention) As is clear from the above description, the present invention provides a guide groove parallel to the conveyor, and transfers the stacked printed circuit boards while fitting the reference pins into the guide grooves, and during this transfer, Forming a pin hole, driving a pin into the pin hole, and cutting the pin are performed by a hole punching device, a pin driving device, and a cutting device that are positioned laterally.
The effect is that these operations can be performed quickly and with high precision.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a partially sectional perspective view showing the main part, Fig. 3 is an explanatory front sectional view showing the hole drilling state, and Fig. 4 is a fixing pin. FIG. 5 is an explanatory front sectional view showing the driving state of the fixing pin, and FIG. 5 is an explanatory front sectional view showing the cutting state of the fixing pin.
FIG. 6 is an explanatory front sectional view showing the driving state of the reference pin, FIG. 7 is a perspective view of a stacked printed circuit board, and FIGS. 8 and 9 are perspective views showing a conventional fixing structure for stacked printed circuit boards. and an enlarged cross-sectional view of main parts. 1: Stacked printed circuit board, 5: Reference pin. 10:
Frame, 11: Conveyor, 12: Guide groove, 1
3: Column, 14: Movable base, 15: Moving axis, 1
6: Movable plate, 17: Upper horizontal cylinder. 2
0: Drilling device, 21: Bracket, 22: First
Vertical cylinder, 23: Air spindle, 24: Cone.
30: Pin driving device, 31: Driving table, 32: Adjuster, 33: Pin case, 34: Fixed pin, 3
5: Feed cylinder, 36: Driving piston, 3
7: Second vertical cylinder. 40: Katsuta device, 41:
Lower table, 41a: window hole, 42: lower horizontal cylinder, 43: air spindle, 44: cutter. 5
0: Locking mechanism, 51: Stopper pin, 52: Lifting cylinder. 60: Drive control device.

Claims (1)

[Claims] 1 A conveyor is provided to forwardly transport the stacked printed circuit boards stacked one above the other, and guide grooves into which the lower part of the reference pin penetrating the front and rear ends of the stacked printed circuit boards is slidably fitted extend in the conveying direction of the conveyor. A stop mechanism is provided to temporarily stop the advance of the stacked printed circuit boards, and a stop mechanism is provided at the temporary stop position of the stacked printed circuit boards.
A drilling device that vertically drills pin holes above the stacked printed circuit boards; a pin driving device located on the side of the drilling device that drives the pins vertically; A stacked printed circuit board characterized in that adjacent cutter devices are each provided so as to be movable laterally, and a drive control device is provided for sequentially starting and laterally moving the hole punching device, pin driving device, and cutter device after activation of the stop mechanism. Fixed pin driving machine.