JPH0319707A - Perforating device for printed circuit board - Google Patents

Abstract

PURPOSE:To increase a production efficiency and to contract the necessary floor space by respectively holding a board toward each drill of a pair of cutting parts having the drills arranged for the directions mutually opposed. CONSTITUTION:Printed circuit boards (PWB) 5, 5' to be worked is held horizon tally and are respectively fixed to one face of tables 4, 4' by board holding parts 6, 6'. A pair of cutting parts 7a, 7b are arranged vertically to the planes of the PWB 5, 5' with drills 2a, 2b being arranged back to back in the same axial line. The pressure feet 1a, 1b of a pair of cutting parts 7a, 7b made back to back are then brought into contact with the PWB 5, 5', subjected to rolling reduction to the tables 4, 4' and the PWB 5, 5' are fixed to the tables 4, 4' by the pressure feet 1a, 1b. Each spindle 3a, 3b of the cutting parts 7a, 7b are then approached to the PWB 5, 5' and perforating is performed simultaneously by the drills 2a, 2b.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industry] Second Field of Application The present invention relates to an apparatus for forming through holes in a printed wiring board (hereinafter referred to as PWB).

[Prior Art] In recent years, the number of through holes has increased dramatically as the number of components mounted on PWBs has increased and patterns have become more dense, so a processing technology that reduces the time spent on drilling has become necessary.

Conventionally, this type of drilling device fixed a PWB only on one side of a PWB fixing table, and drilled holes from above the PWB.

[Problem to be solved by the invention]

The above-mentioned conventional drilling device performs drilling from above the PWB fixing table, that is, from the positional direction, using one PLTlB, and therefore has the drawbacks of low work efficiency and a long processing time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a printed wiring board drilling device that solves the above problems.

[Differences between the invention and the prior art] In contrast to the conventional drilling device described above, the present invention has two PW holes.
The difference is that through-holes are drilled at the same time in H.

[Means for Solving the Problems] In order to achieve the above object, the printed wiring board drilling device according to the present invention includes a pair of cutting parts that drill holes in the board with drills arranged in opposite directions. and a substrate holding section that holds the substrate toward each drill of the cutting section.

〔Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1(a) is a diagram showing an embodiment of the present invention.

In the figure, the present invention has tables 4, 4' facing each other.
board holders 6 and 6' that respectively hold printed wiring boards 5 and 5' with their processed surfaces facing in opposite directions; (a
) is equipped with a pair of cutting parts 7a and 7b having drills 2a and 2b arranged in the vertical direction).

The cutting parts 7a, 7b include drills 2a, 2b, pressure feet Ia, lb which have a drill through hole in the center and press down the substrate, spindles 3a, 3b which directly connect the drills 2a, 2b, and not shown. spindle 3a,
3b rotational drive source.

As shown in FIG. 1(a), a printed wiring board (hereinafter referred to as PWB) to be processed5. 5' is kept horizontal and fixed to one side of the tables 4, 4' by substrate holders 6, 6', respectively. On the other hand, the drills 2a and 2b of the pair of cutting parts 7a and 7b are arranged back to back on the same axis line, and the PWB 5
．． 5' plane perpendicular to the plane.

Next, as shown in FIG. 1(b), a pair of cutting parts 7 are placed back to back.
a, 7b pressure foot la, lb to PWB5
, 5' and press down onto the table 4, 4', and fix the PWB 5, 5' to the table 4, 4' using pressure feet Ia, lb. In this state, the cutting parts 7a and 7b
The spindles 3a and 3b are brought close to the PWBs 5 and 5', and holes are simultaneously drilled in the two PWBs 5 and 5' using an upward drill 2a and a downward drill 2b at their tips.

In addition, the PWBs 5, 5' fixed on the fixed tables 4, 4'
It is also possible to process the number of each of the two or more sheets.

In addition, in the example, a processing method using a pair of drills facing away from the coaxial line 2 was explained, but it is also possible, for example, that the pair of drills are not on the coaxial line and each performs a separate drilling operation. This device can also perform two types of hole drilling at the same time.

[Effects of the Invention] As explained below, since the present invention drills holes in two sheets at the same time, the conventional processing time required to process the same number of sheets can be cut in half, and it is also possible to perform two types of processing at the same time. It is extremely useful for improving production rates. In addition, drilling equipment is very large and takes up a lot of floor space, but since this equipment has the capacity of two drilling machines, the number of drilling equipment can be reduced by half, and the floor space occupied is half that of conventional equipment. It has the effect of being able to be reduced to

[Brief explanation of drawings]

FIGS. 1(a) and 1(b) are cross-sectional views showing one embodiment of the present invention. Ia, lb...Pressure foot 2a, 2b...
・Drill 3a, 3b...Spindle 4, 4
'...Table 5, 5'...PWB
6.6'...Substrate holding part 7a, 7b...Cutting part

Claims (1)

[Claims] (1) It is characterized by having a pair of cutting parts for drilling holes in the board with drills arranged in opposite directions, and a board holding part for holding the board respectively facing each drill of the cutting part. Printed wiring board drilling equipment.