JP6296644B2 - Automatic backup chip feeder for drilling equipment - Google Patents

Description

  The present invention relates to an auxiliary device for drilling work on a workpiece such as a printed circuit board, and more particularly to a technique for automatically supplying a contact plate that prevents the occurrence of burrs on the bottom surface of a processed plate.

Printed circuit boards on which electronic components are mounted include alignment holes, exposure holes for inner layer materials, guide holes for driving guide pins, reference holes for pin lamination, etc. at the stage of production. Drill holes. Such a reference hole is required to have no burrs on the bottom surface of the printed circuit board.

  Therefore, a drilling spindle connected to a drilling spindle and a collet chuck integrated therewith, a pressure foot for fixing the drilling blade on the printed board when drilling, and a board holding mechanism for holding and fixing the printed board horizontally. In the processing apparatus configured, as shown in Japanese Patent Application Laid-Open No. H10-228707, for the purpose of preventing the generation of burrs at the time of drilling, a contact plate is closely attached and fixed to the bottom surface of the printed circuit board.

JP 2011-23643 A

However, there is a problem in that a manual operation for bringing a new contact plate into contact with the bottom surface of a printed circuit board to be brought into close contact with each other is required, so that it is not possible to automatically perform a drilling operation continuously.
The present invention has been made in view of such problems, and the object of the present invention is to enable a continuous drilling operation at a high speed without generating burrs in a reference drilling operation of a workpiece plate. It is an object to provide a simple device.

Thus the invention provides apparatus for supplying backup chip processing means having a perforation means which is configured to moving base which moves relatively two-dimensional with respect to the plane of the substrate to be processed, stacked multiple backup chips A backup chip holder to be accommodated in the disk, a backup chip of the uppermost layer of the backup chip holder is pushed into the drilling work area, a backup chip after the drilling work is ejected from the drilling work area, and the chip feed lever is pushed out. A backup chip gripper that holds the backup chip and makes contact with the back surface of the substrate to be processed.

  The automatic backup chip supply device of the present invention enables drilling with a backup chip that allows only the drilled part to be in close contact with each other, and does not require manual mounting of the backup chip for each substrate, thus realizing high-speed automatic operation. it can.

It is a front view which shows one Example of the drilling apparatus with which the automatic backup chip | tip supply apparatus of this invention was applied. FIGS. (I) to (III) are explanatory views showing the operation of the automatic backup chip supply apparatus.

Details of the present invention will be described below based on the illustrated embodiments.
FIG. 1 shows an embodiment of an apparatus for automatically supplying a backup chip (hereinafter referred to as a backup chip) applied to a drilling apparatus, which is in the X and Y axis directions with respect to the plane of the printed circuit board W. , A drilling spindle 2 formed on the moving unit 1, a drill blade 3 connected to the drilling spindle 2, a pressure foot 4, and a servo motor for raising and lowering the drilling spindle 3. 5 and the like, a backup chip gripper 7 for tightly fixing the backup chip 6 to the bottom surface of the workpiece, for example, the printed board W, a chip lifting mechanism 8 for lifting and lowering the backup chip gripper 7, and a backup chip 6 Backup chip holder 9 for storing a plurality of backup chips and backup chip 6 for backup chip Chip feed lever 10 to be loaded into flop gripper 7, and a discharge chip holder 11 and the like for storing a backup chip 6 after drilling operations.

  At the start of drilling the reference hole, one backup tip 6 is loaded into the pack-up gripper 7 by the tip feed lever 10 (FIG. 2 (I)). The backup chip 6 held by the pack-up gripper 7 is brought into close contact with a required portion on the back surface of the printed circuit board W on the circuit board support 12 by the chip lifting mechanism 8 (FIG. 2 (II)), and the printed circuit board by the subsequent drilling operation. Prevents the occurrence of burrs on the bottom of W.

  When a series of drilling operations using the backup tip 6 is completed, the backup tip gripper 7 is lowered by the gripper cylinder 13 and sent to the discharge tip holder 11 by the tip feed lever 10 and stored therein (FIG. 2). (III)).

  When the tip feed lever 10 is retracted to the side end of the backup tip holder 9, a new backup tip 6 is pushed up to the operating height of the lever 10 by the accumulating means 14. Then, it is loaded again into the backup gripper 7 by the feed lever 10 (FIG. 2 (I)), and ready for drilling in the next area.

  In the figure, reference numerals 15 and 16 denote ball screws that form driving means for the moving unit 1 that supports the gantry 17, respectively.

  In the above-described embodiment, a single processing device and an automatic backup chip supply device are used. However, it is clear that the same effect can be obtained even if a plurality of automatic backup chip supply devices and / or drilling mechanisms are used. .

By the way, a conventional back-up chip uses a paperlite plate, a glass epoxy plate, an ABS resin plate, a polypropylene resin plate and the like.
On the other hand, in the present invention, a plate obtained by kneading glass powder into a PEI (amorphous thermoplastic polyetherimide) resin having heat resistance and stability of mechanical properties in a wide temperature range. It is composed of an injection molded material. For this reason, the adhesiveness to the printed circuit board at the time of perforation can be ensured by the heat resistance of the resin itself and the high chip releasability by the glass powder, and the occurrence of burrs can be reliably prevented.

DESCRIPTION OF SYMBOLS 1 Moving unit 2 Drilling spindle 3 Drill blade 4 Pressure foot W Printed circuit board 6 Backup chip 7 Backup chip gripper 8 Chip raising / lowering mechanism 9 Backup chip holder 10 Chip feed lever 11 Discharge chip holder 12 Substrate support 13 Gripper cylinder

Claims (2)

An apparatus for supplying backup chip processing means having a perforation means which is configured to moving base which moves relatively two-dimensional with respect to the plane of the substrate to be processed,
A backup chip holder that accommodates a plurality of backup chips in a stacked state; a chip feed lever that pushes the uppermost backup chip of the backup chip holder into the drilling work area, and discharges the backup chip after the drilling work from the drilling work area; An automatic backup tip supply device for a punching device, comprising: a backup tip gripper that holds the backup tip pushed out by the tip feed lever and makes contact with the back surface of the substrate to be processed.   2. The automatic backup tip supply device for a punching device according to claim 1, wherein the backup tip is constituted by kneading glass powder into an amorphous thermoplastic polyetherimide resin.

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