JPH0317397B2 - - Google Patents

Description

[Detailed description of the invention]

[Summary] A large number of connector terminals (pins) are connected by a carrier section to form a comb-shaped continuous strip, and while the pin portions of a pair of continuous strips are clamped against the core with a pair of clamp arms, , a pair of cutting blades that cut the carrier section and separate it into individual connector pins. [Industrial Application Field] The present invention relates to a connector terminal drive used to manufacture printed circuit boards having connector terminals (pins) such as back wiring boards of racks for housing printed circuit boards in electronic equipment, communication equipment, etc. Regarding the included head. [Conventional technology] With the miniaturization of electronic equipment and communication equipment, connector terminals (pins) are driven into the pin mounting holes of printed circuit boards such as back wiring boards, etc., and this type of back wiring boards, etc., can be manufactured in large quantities and quickly. There is a need for the development of an automatic connector terminal driving machine. In particular, when supplying connector terminal material to such an automatic connector terminal driving machine, it is necessary to continuously and integrally connect a large number of connector pins in a carrier section to form a long comb-shaped continuous strip. Traditionally used. The carrier portion of this continuous strip must be cut before the connector pins are driven into the back wiring board or the like. Conventionally, temporary insertion when driving connector pins,
Production efficiency was poor because it was common practice to perform operations such as driving and cutting the carrier portion individually by hand. [Problems to be Solved by the Invention] The present invention is suitable for an apparatus for automatically driving connector pins configured as a comb-shaped continuous strip as described above, and moreover, it An object of the present invention is to provide a connector terminal driving head which can simultaneously drive the connector terminals. [Means for Solving the Problems] In order to solve these problems, according to the present invention, a plurality of connector pins are integrally connected at a carrier part to form a comb-shaped strip material, and a pair of A pair of clamp arms clamp the pin portion of the comb-shaped strip material to the core from both sides of the core so as to be substantially parallel to each other with the longitudinal core sandwiched therebetween; A connector terminal driving head is provided having a pair of cutting blades for cutting a carrier portion of a comb-like strip material and separating it into individual connector pins while clamping the connector pin portion of the material. Ru. In this case, each of the pair of cutting blades is a comb-shaped blade corresponding to the spacing between the connector pins of the comb-shaped strip, and each clamp arm of the pair also has a longitudinal length corresponding to the spacing of the connector pins of the comb-shaped strip. It has a plurality of windows arranged in the direction, and each tooth of the comb-like blade passes through the clamp arm from each window and cuts the pair of comb-like strips with a die between them. is desirable. [Operation] By clamping the connector pins connected in a comb-like manner by the carrier so as to face each other, and further cutting the carrier in this state, it is possible to automatically insert the pair of connector pins. [Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, Fig. 5 shows an automatic connector terminal driving machine, where A is the connector terminal supply mechanism, and B is the connector terminal feeding mechanism.
Reference numeral denotes a material supply section for feeding the connector terminal as a workpiece to the apparatus, C indicates a dowel cutting section which will be described later, and D indicates a size adjustment mechanism for the connector terminal which will be described later. E and F are connector terminal driving heads, and E is for metric size (the pitch between the pins is
2.5mm), F is for inch size (pitch between pins is 2.54mm). G is the main table on which the printed circuit board that becomes the back wiring board is mounted by driving the connector terminal, H is the work feed and scrap cutting section, I is the control device that controls the driving heads E and F, and J is the X-Y table. It is a control device that controls the FIG. 6 shows a connector terminal as a workpiece wound into a roll. FIG. 7 shows a comb-shaped connector terminal. As shown in FIG. 7, the connector terminal is formed by connecting a large number of connector pins 1 continuously and integrally at a carrier portion 2 to form a long comb-shaped continuous metal strip 10. The carrier section 2 is provided with continuous feed holes 3 in the longitudinal direction, and in order to facilitate cutting the continuous strip material 10 into a predetermined number of pins, thin slits are preliminarily formed between each connector pin 1. It is provided. Such continuous strip material 10 is the sixth
As shown in the figure, it is wound into a roll with a paper tape 12 interposed therebetween. The paper tape 12 is for protecting the rolled connector terminal, especially the pin contact portion. FIG. 8 shows the state in which the carrier part of the connector terminal is separated and the individual connector pins 1 are driven into the back wiring board 14.
FIG. 9 shows a part of it in cross section. The back wiring board 14 is provided with a pair of rows of pin insertion holes 15 in advance.
Therefore, the connector pins 1 are driven in a pair of rows, and the contact surfaces 1a plated with precious metal of each connector pin 1 are driven opposite to each other as shown in FIG. In FIG. 5, the pair of continuous strips 10a and 10b of the connector terminal that have entered the material supply section B are placed vertically in the longitudinal direction, facing each other and with each carrier section 2 (FIG. 7) facing upward. conveyed horizontally. In order to facilitate such conveyance, as shown in FIG.
Dowels (protrusions) 5 are provided at predetermined intervals in the longitudinal direction (on the plated contact side surface of the pin 1).
In the illustrated embodiment, dowels 5 are provided above every fifth feed hole 3. Such a dowel 5 can be formed by pressing or the like inside the dowel cutting section C (FIG. 5). FIG. 10 is a cross-sectional view of the conveying section of the pair of continuous strips 10a and 10b of the connector terminal, which is perpendicular to the conveying direction. Continuous strip material 10a, 10b
The rail member 33 for guiding extends in the longitudinal and horizontal direction, and has grooves 34 in the longitudinal and horizontal directions on both vertical sides.
a, 34b are provided. Continuous strip material 10a, 10
The dowel 5 of the inner carrier part of b is inserted into these grooves 34a, 3.
4b, and the continuous strips 10a, 10b are guided so as to be suspended between the guide members 35a, 35b and both side surfaces of the rail member 33. The continuous strip material is conveyed by a well-known feeder (not shown). FIGS. 11 and 12 show a method of adjustment in the size adjustment section D (FIG. 5) of the connector terminal. There are two types of back wiring boards: those with connector pin spacing of 2.5 mm (usually called metric size) and those with 2.54 mm (inch size), and the connector terminal driving machine disclosed in 22 has both sizes. In order to apply it to the connector terminal, it is equipped with both a metric size driving head E and an inch size driving head F (Figs. 5 and 11). 1 (Fig. 5) is preset to millimeter size (2.5 mm). In order to apply this to an inch-sized (2.54 mm) driving head F, a wedge-shaped punch 37 is driven from both sides of the carrier portion 2 of the continuous strip 10, and this stretches the carrier portion 2 and pins the connector pins. The pitch between 1 and 1 is enlarged to approximate an inch-sized pitch. In this case, the punch 37 does not need to be driven into the carrier portion 2 between all the connector pins 1, and the following method can be practically used. For example, as shown in FIG. 12, when driving 15 connector pins at once, first place the pins between the 5th and 6th pins indicated by A, and between the 5th and 6th pins.
Drive a punch between the 10th and 11th pins to stretch both sides in the direction of the arrow, then insert the holes between the 2nd and 3rd pins indicated by B, and the 11th pin.
By driving a punch between the 13th and 14th pins, stretch both ends as shown by the double arrows. If it is stretched by 0.12mm by punching in one place, the dimensional difference between each pin and the regular inch size pitch will be as shown in the table below, using the 8th pin position as the reference (center). Therefore, like this

〔Effect of the invention〕

As described above, according to the present invention, a large number of connector pins of a pair of facing continuous strips can be automatically driven simultaneously, so that the work efficiency of driving connector pins is improved. This allows application to automatic manufacturing machines for printed circuit boards such as back wiring boards.

[Brief explanation of the drawing]

FIG. 1 is a front view of a connector pin driving head according to the present invention, FIG. 2 is an enlarged view of the part shown in FIG. 1, and FIG.
The figures are a cross-sectional view taken along the line in Fig. 2, Fig. 4 is a partial view of the clamp arm seen from the arrow in Fig. 2, Fig. 5 is a schematic perspective view showing the entire automatic connector terminal driving machine, and Fig. 6 7 is a perspective view showing the continuous strip material of the connector terminal wound into a roll;
The figure is a plan view of the connector terminal continuous strip material, No. 8
The figure is a perspective view of a back wiring board with connector terminals (pins) driven into it, Figure 9 is a partial cross-sectional view of the back wiring board with a pair of connector pins driven in, and Figure 10 shows a continuous strip conveying section. FIG. 11 is a schematic diagram showing the flow from the size adjusting part to the driving part of the connector terminal, and FIG. 12 is a diagram for explaining the method of adjusting the size of the connector terminal. 1... Pin, 2... Carrier part, 5... Dowel (protrusion), 10 (10a, 10b)... Continuous band material,
14...Back wiring board, 15...Pin insertion hole, 33...Transportation rail, 34a, 34b
... Groove, 37 ... Punch, 41 ... Driving head,
43a, 43b... Clamp arm, 44... Core, 47a, 47b... Cutting blade, 50a, 50b
...Cam surface, 52a, 52b...Lever, 56...
...Dice, 58...Pin guide, 60...Recess.

Claims (1)

[Scope of Claims] 1 A plurality of connector pins are integrally connected at a carrier part to form a comb-like band, and the pin portions of a pair of the comb-like bands are opposed substantially in parallel with a longitudinal core in between. a pair of clamp arms clamping the tang from opposite sides thereof so as to clamp the carrier portion of the comb-like strip while the clamp arms clamp the connector pin portion of the comb-like strip; A connector terminal driving head characterized by having a pair of cutting blades for cutting and separating the connector pins into individual connector pins. 2 Each of the pair of cutting blades is a comb-shaped blade that corresponds to the spacing between the connector pins of the comb-shaped strip material, and each of the pair of clamp arms is also aligned in the longitudinal direction corresponding to the spacing of the connector pins of the comb-shaped strip material. It has multiple windows,
The driving head according to claim 1, wherein each tooth of the comb-shaped blade passes through the clamp arm from each window and cuts a pair of comb-shaped strips with respect to a die between them. .