JP2501522B2 - Printed circuit board supply and unloading device for printed circuit board drilling machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supplying and unloading a printed circuit board in a printed circuit board punching machine.

[0002]

2. Description of the Related Art As a conventional device of this type, a loading device (Japanese Patent Laid-Open No. 59-156644) of a printed circuit board drilling machine previously filed by the present applicant and a work of the printed circuit board drilling machine. Conveyor (Japanese Patent Laid-Open No. 62-141
599).

[0003]

In recent years, a large number of printed circuit boards have been processed in large quantities, and a plurality of machines are connected to each other to connect an unprocessed printed board supply device to one side and a processed printed circuit board receiving device to the other side. There is a demand for automation. The advantage of machining with multiple machines is that each machine can be machined with a different machining program and is suitable for a wide variety of small-volume production. The above-described conventional supply and unloading device for a printed circuit board is a method for a single machine, and is not suitable for a method for connecting and supplying machines and unloading. Therefore, an object of the present invention is a method of supplying and unloading a printed circuit board of a single printed circuit board drilling machine capable of connecting a plurality of machines.

[0004]

In order to achieve the above object, in the present invention, a plurality of printed circuit board works placed on a table and a tool gripped by a plurality of spindles are installed in a machine X. , A multi-axis printed circuit board boring machine configured to process the printed circuit board by relative movement in the Y and Z directions, and a printed circuit board provided along the rear part of the bed of the printed circuit board boring machine. , A conveying device equipped with a supply conveyor device and a discharging conveyor device that conveys the product in an inclined state, and is arranged at a delivery position on the printed circuit board punching machine side of each conveyor device of the conveying device, from the supply conveyor device section. When feeding to the table side, make the work stand by on the rear side of the processing machine,
A printed circuit board is provided with a loader device for supplying the printed circuit board through the upper side of the table during supply and an inverted and elevating device integrally formed for discharging the printed circuit board from the table to the discharge conveyor device side. It constitutes a printed circuit board supply / unload device for the processing machine.

[0005]

According to the above-mentioned device of the present invention, the printed board works are drawn out one by one from the unprocessed printed board supply device side and conveyed on the supply conveyor device in a tilted state, and the printed board hole punching machine is provided. Stop one after another at each fixed position that is concentric with the work mounting position on the table. Then, the clamp portion of each axis loader device moves forward to clamp the workpiece and move backward. The clamp retract signal causes the table of the printed circuit board hole processing machine to move to the supply / delivery fixed position and stop, and the work lift rail rises while the table is moving.

The loader device moves to the table side while clamping the work and stops at the supply / delivery fixed position. After the work is performed on the clamp part and the work is placed on the work lift rail, the clamp part is unclamped as it is. To raise. For the work transferred to the table side, the work lift rail descends to adhere the work to the table surface and clamp the positioning pins to start processing. The clamp device moves to the supply conveyor device side and stops at a fixed position. Before the processing of the work is completed, the work to be processed next is sent from the unprocessed printed circuit board supply device side and stopped at the supply fixed position of the printed circuit board punching machine. Then, the clamp portion of each axis loader device moves forward to clamp the workpiece and move backward to stand by. This is because, when the processing machines are connected, it is not known from which machine the unprocessed substrate is requested to be supplied, so that the work is not placed in the supply path.

When the boring process by the printed circuit board boring machine is completed, the table of the printed circuit board boring machine moves to the work discharge position, and the inversion and elevating device on the discharge conveyor device side rises to clamp the inversion device. The arm is operating and waiting with the clamp jaws unclamped, and when the table has finished moving to the discharge position, the work enters into the clamp jaws. The work is clamped and the inversion device is operated to remove the work from the table, stand it up, and then descend to the discharge conveyor device and discharge it. If the clamp claw is unclamped at the descending end, the work is discharged to the processed printed circuit board receiving device side. On the other hand, the table moves to the supply fixed position and stops. Then, each axis loader device clamps the work and stands by, so that the work is started to move to the supply fixed position and the work is supplied. Drilling is started after the supply is completed.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 3 shows a work W of a printed circuit board in which a plurality of printed circuit boards are superposed and the reference pin a is penetrated to be integrated. FIG. 1 is a side view of a printed circuit board punching machine equipped with the device of the present invention, and FIG. 2 is a front view showing a line II in FIG. In the figure, A is a printed circuit board drilling machine, and 1 is a processing table. 2a, 2b
Is a side frame that supports the supply loader device E (see FIG. 8). The side frames are located on both the left and right sides, and are joined by intermediate joint brackets 3a to 3d, which are joined to the printed board punching machine by brackets 5 and 6. The connecting brackets 4a to 4d are connected between the intermediate connecting brackets 3c and 3d, and the following devices are connected to the connecting brackets 4a to 4d. Supply conveyor device B (see FIG. 4), push-up device C
(See FIG. 6), discharge conveyor device D (see FIG. 5), F
Is an inversion and lifting device (see FIG. 15).

Supply conveyor device B (see FIGS. 4, 6, 7, and 8)
The roller support plate 8 is connected to the connecting brackets 4a to 4d by the bracket 7. A large number of flanged rollers 9 (with timing gears) for transporting the work are attached to the support plate, and a drive pulley 10 of a speed control motor (with brake) 12 is attached.
The timing belt 11 is hung on and rotated. Since the work moves in an inclined state, the holder plate 13 is taken out from the support plate, and the resin guide rail 14 having good sliding property is attached thereto. The guide rail mounting position determines the minimum processing board size according to the specifications of the processing machine, and is set to a position lower than this size. If it is more than this, the positioning pin a hit on the work will hit at the time of movement.

A stopper device G for stopping the work positioning pin is installed at a position concentric with the work mounting position of the machining table. Since the positioning pin is the reference point when drilling, we do not want to give much impact.
The moving work is decelerated by driving a deceleration photoelectric switch (not shown) on the end face of the substrate to decelerate the drive motor 12 and then stopped by the stopper block 80. When the deceleration photoelectric switch operates, the forward movement cylinder 81 of the stopper block operates, and the positioning pin is detected by the photoelectric switch 15 at the stopped position.

Since the stopped work itself has bending and distortion, the lifting device C is installed above the stopper device G because it is difficult to clamp it by the loader device E.
When stopped, the cylinder 16 operates to move the push-up plate 17 forward to push up the work. Loader device E
Is connected to the holding bar 18 by a holding block 19. Both ends (see FIGS. 2 and 13) of the holding bar are joined by side plates 20, and a guide bearing 21 is incorporated at the tip of the holding bar. A lever 23 is further attached to one of the holding bars, and a block 24 attached to the moving chain 22 is connected by a connecting pin 25.

The guide bearing and the moving chain are held by guide rails 26a and 26b (see FIG. 14). Guide rails are side frames 2a, 2b
It is installed from the supply conveyor section to the punching machine side. Further, a loader device moving chain 22 is stretched on the side frame portion by sprockets 27 and 28. The sprocket 27 is for driving and is mounted on a drive shaft 29 and supported by bearing bearings 30. The brake motor 31 with a speed reducer is attached to a bracket 33 attached to the side frame, and is coupled to the drive shaft by a coupling 32.

Loader device E (FIGS. 9, 10, 11, 12)
(Refer to FIG. 4) has a front and rear operation for picking up a work and a clamping operation.
Are also combined. A shaft 36 that holds and holds the clamp head mounting plate 38 is attached to the guide bush. The work is stopped at the position where the positioning pin is applied to the stopper 13 while standing on the supply conveyor device, and the substrate end face side which is in contact with the flanged roller 9 becomes the reference side. Two cylinders are attached to the clamp head mounting plate, the reference side clamp cylinder 39 clamps the reference side, and the free side cylinder 4
0 clamps the other end. The free side has a long stroke so that it can be clamped even if the substrate work size changes.

Clamp claws 42a and 42b are connected to the respective cylinder rods by blocks 41a and 41b, and a slit groove thicker than the diameter of the positioning pin is formed in the center of the clamp claws 42a and 42b. The positioning pin a hit on the work enters here, and moves while preventing positional deviation. The clamp head mounting plate 38 is provided with a board floating prevention (see FIG. 9). A guide bush 44 and a guide shaft 45 are combined with the holder plate 43, and a holding plate 47 is attached to a block 46 at the tip of the guide shaft with a mounting bolt 48.
It is fixed at. A scratch protection resin 49 is attached to the work pressing side of the pressing plate.

A spring receiver 50 and a compression spring 51 are incorporated in the guide shaft between the block 46 and the guide bush 44. As a result, when the work piece is moved forward to pick up the work piece, the pressing plate hits the work piece and the spring bends to prevent the guide shaft from escaping and lifting. Although the work is supplied to the processing table of the printed circuit board drilling machine, it cannot be placed directly on the processing table because the clamp claws 42a and 42b of the loader device E are located under the work when clamped. For this purpose, as shown in FIG. 18, a work lift rail 52 is provided in each groove 1a provided on the upper surface of the table, and an air cylinder 53 used when ascending and a tension spring 54 used when descending are provided below the rail. Reference numeral 55 denotes a stopper when the rail is lifted up, and when the rail is lifted up, a gap is opened between the work and the table to release the thickness of the clamp claw. At the time of drilling, this rail is lowered to bring the work into close contact with the table top surface.

A device for discharging the work, which has been processed, to the discharge conveyor device D is an upright and elevating device F (see FIGS. 15 and 1).
6 and 17). The upper part of the lifting device is the bracket 5
The bed of the printed circuit board boring machine is connected by means of 7 and the lower part thereof is connected to the roller supporting plate 58 of the discharging conveyor device. The lifting head 59 and the gear head 6 of the inverted device
0 is connected, and in the gear head, a pinion gear 62 and a cushion arm 63 are connected to a rotating shaft 61,
Bearings are supported by bearings 64.

Reference numeral 65 denotes a bearing retainer, 68a, 68b,
68c is a collar, 66 is a cushion valve, the pinion gear meshes with the rack 68, and the rack is connected to the rod of the air cylinder 67. The air cylinder body is connected to the gear head, and gives the rotation to the rotation shaft by the back and forth movement of the rod. Arms 69a and 69b are coupled to both sides of the rotary shaft, and two chuck heads G are installed at the tip of each arm, and one set of works is clamped by the chuck heads having two arms on one side. The chuck head G (see FIG. 17) has an air cylinder 71, a guide bush 72, a fixed side plate 70, and an air cylinder 71.
And the shaft 73 is inserted in the guide bush. The shaft and the cylinder rod are connected by a joint 74, and the moving side plate 75 is connected to the other end of the shaft. When the air cylinder is operated, the moving side plate clamps the work through the shaft. Then, the inversion air cylinder operates to rotate the arm between the rack and the pinion via the rotating shaft to invert the work. In this state, the elevating device descends and the work is transferred to the discharge conveyor device, and the air cylinder of the chuck head is operated and unclamped before the end face of the work hits the flanged roller 9, and the work is placed on the roller.

The discharge conveyor device D (see FIGS. 5, 6 and 15) has a roller support plate 58 connected by brackets 76 on the connecting brackets 4a, 4b, 4c and 4d in the same manner as the supply conveyor device. A large number of flanged rollers (with timing gears) for transporting the work are attached to the support plate, and the drive motor with reduction gear 7
A timing belt 79 is hung on the driving pulley 78 of No. 7 and rotated. Since the work moves in an inclined state, the holder plate 13 is taken out from the support plate, and the resin guide rail 14 having a good slip is attached to the holder plate 13. The guide rail mounting height is the same as the supply side. When the inversion and elevating device transfers the work to the discharge conveyor device, the arms 69a and 69b pass through, so that there are some gaps (see h in FIG. 5).

[0019]

Since the present invention is constructed as described above, the present invention has the following advantages. The structure is such that when a plurality of multi-axis type printed circuit board punching machines are connected to each other for automation, the work can be smoothly fed and unloaded. Also, when multiple units are connected, by clamping the work to be processed next to the loader device and making it stand by, the supply conveyor device becomes empty and the work can be freely flowed from the unprocessed printed circuit board supply device and supplied to any machine. can do. Further, since the supply and the discharge are performed by the separate devices, the time for exchanging the work is shortened, and the provision on the rear side of the punching machine provides a margin on the front side and the workability is not impaired.

[Brief description of drawings]

FIG. 1 is a side view of a printed circuit board punching machine equipped with the device of the present invention.

FIG. 2 is a front view taken along the line II of FIG.

FIG. 3 is a perspective view of a processing unit of a printed circuit board work.

FIG. 4 is a front view of a supply conveyor device.

FIG. 5 is a front view of a discharge conveyor device.

6 is a view taken along the line II-II of FIG.

FIG. 7 is a detailed view of a stopper device G section.

FIG. 8 is a view taken along the line III-III in FIG.

FIG. 9 is a side view of the loader device.

10 is a view taken along the line IV-IV in FIG.

11 is a view on arrow VV in FIG. 9. FIG.

12 is a view taken along the line VI-VI in FIG.

FIG. 13 is a detailed view of a portion H in FIG.

14 is a detailed view of a tip of a holding bar of the loader device of FIG. 13 and a guide of a moving chain portion.

FIG. 15 is a side view of the inverted and lift device.

16 is a VII-VII arrow view of FIG.

FIG. 17 is a detailed view of an inverted head and a chucking head.

FIG. 18 is a plan view of a processing table portion of the punching machine.

19 is a detailed view taken along the line VIII-VIII in FIG.

[Explanation of symbols]

 A Printed circuit board punching machine B Supply conveyor device C Push-up device D Ejection conveyor device E Loader device F Inverter and elevating device G Stopper device 1 Processing table 2a-2b Side frame 3a-3d Intermediate connecting bracket 4a-4d Connecting bracket 5 , 6,7 Bracket 8 Roller-support plate 9 Collar roller 10 Drive pulley 11 Timing belt 12 Speed control motor 13 Holder plate 14 Guide rail 15 Photoelectric switch 16 Cylinder 17 Push-up plate 18 Holding bar 19 Holding block 20 Side plate 21 For guide Bearing 22 Moving chain 23 Lever 24 Block 25 Connection pin 26a, 26b Guide rail 27, 28 Sprocket 29 Drive shaft 30 Bearin 31 Brake motor 32 Coupling 33 Bracket 34 Plate 35 Guide bush 36 Shaft 37 Cylinder 38 Mounting plate 39 Clamp cylinder 40 Free side cylinder 41a, 41b Block 42a, 42b Clamp claw 43 Holder plate 44 Guide bush 45 Guide shaft 46 Block 47 Presser Plate 48 Bolt 49 Scratch protection resin 50 Spring receiver 51 Compression spring 52 Work lift rail 53 Air cylinder 54 Tension spring 55 Stopper 57 Bracket 58 Roller support plate 59 Elevating head 60 Gear head 61 Rotating shaft 62 Pinion gear 63 Cushion arm 64 Bearing 65 Bearing Work clamp 66 Cushion valve 67 Air cylinder Da 68a, 68b, 68c color 69a, 69b arm 70 stationary plate 71 the air cylinder 72 guide bush 73 shaft 74 joint 75 movable plate 76 bracket 77 reducer with a driving motor 78 driving pulley 79 timing belt 80 stop block 81 forward cylinder

Claims (1)

(57) [Claims] 1. A printed board is processed by relatively operating a plurality of workpieces W for a printed board placed on a table 1 and a tool held by a plurality of spindles in X, Y, and Z directions of a machine. A multi-axis printed circuit board punching machine A configured as described above, and a supply conveyor device B that is attached along the rear part of the bed of the printed circuit board punching machine A and conveys the printed circuit board in an inclined state. When a conveying device provided with a discharge conveyor device D and a delivery position on the printed circuit board punching machine A side of each conveyer device of this conveying device are arranged and supplied from the supply conveyor device B section to the table 1 side Work W on the back of processing machine A
And a loader device E that supplies a printed circuit board through the upper side of the table 1 when the table 1 is supplied.
In addition, a printed circuit board supply and unloading device in a printed circuit board punching machine, which is provided with an inversion and elevating device F integrally formed for discharging the printed circuit board on the discharge conveyor device D side.