JPS61229394A - Connector terminal striken head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] A large number of connector terminals (pins) are connected by a carrier part to form a comb-shaped continuous strip, and the pin portions of a pair of continuous strips are attached to a core by a pair of clamp arms. A pair of cutting blades cuts the carrier part and separates it into individual connector pins while the carrier is clamped against the connector pin.

[Industrial application field]

The present invention relates to a connector terminal driving head used for manufacturing printed boards having connector terminals (pins) such as back wiring boards of racks for housing printed boards in electronic equipment, communication equipment, etc.

[Conventional technology]

With the miniaturization of electronic devices and communication devices, automatic connector terminal driving is used to rapidly manufacture large quantities of back wiring boards, etc. by driving connector terminals (pins) into the pin mounting holes of printed circuit boards such as back wiring boards. The development of a loading machine is required.

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 part 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 bank wiring board or the like. Conventionally, temporary insertion when driving connector pins,
Production efficiency was not good because it was common practice to perform operations such as driving and cutting the carrier portion individually by hand.

[Problem that the invention seeks to solve]

The present invention is suitable for a device for automatically driving connector pins configured as a comb-shaped continuous strip as described above, and is capable of driving a large number of pins of a pair of continuous strips at the same time. The aim is to provide an integrated head.

[Means for solving problems]

In order to solve such problems, according to the present invention,
A plurality of connector pins are integrally connected in a carrier part to form a comb-shaped strip, and the pin portions of a pair of comb-shaped strips are connected on both sides so as to face each other substantially parallel to each other with a longitudinal core in between. a pair of clamp arms that clamp the connector pin portions of the comb-like strips to the core, and while the clamp arms clamp the connector pin portions of the comb-like strips, cut the carrier portion of the comb-like strips to separate individual connectors. A connector terminal driving head is provided that has a pair of cutting blades that separate into pins. 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 multiple windows lined up in the direction,
Preferably, each tooth of the comb-like blade passes through the clamp arm and cuts the pair of comb-like strips against a die therebetween.

[For production]

The pair of connector pins can be automatically inserted by clamping the connector pins connected in a comb-like manner by the carrier so as to face each other, and then cutting the carrier in this state.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, an automatic connector terminal driving machine is shown in Fig. 5, where A is the connector terminal supply mechanism, B is the feeder section that feeds the connector terminal as a workpiece to the device, C is the dowel cutting section that will be described later, and D is the section that will be described later. This is a size adjustment mechanism for the connector terminal.

E and F are connector terminal driving heads,
E is for metric size (pitch between pins is 2.5m),
F is for inch size (pitch between pins is 2.54). G is the main table on which the printed board that becomes the back wiring board is mounted by driving the connector terminal, H is the workpiece feeding and scrap cutting section, I is the control device that controls the driving heads E and F, and J
is a control device that controls the X-Y table.

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 with a carrier portion 2 to form a long comb-shaped continuous metal strip 10. The carrier part 2 is provided with continuous feed holes 3 in the longitudinal direction, and in order to facilitate cutting the continuous strip 10 into a predetermined number of pins, narrow slits are preliminarily formed between each connector pin 1. It is a provision. Such a continuous strip lO is wound into a roll with a tape 12 interposed therebetween, as shown in FIG. The tape 12 is for protecting the rolled connector terminal, especially the pin contact portion.

Figure 8 shows that the carrier part of the connector terminal is separated and the individual connector pins 1 are attached to the back wiring board 1.
4 shows the state in which it is driven in, and FIG. 9 shows a part of it in a sectional view. Back wiring board 14
A pair of rows of pin insertion holes 15 are provided in advance.

Therefore, the connector pins 1 are driven in a pair of rows, and the contact surface 1a of each connector pin 1 is plated with a precious metal.
are driven opposite each other as shown in FIG.

In FIG. 5, the pair of continuous strips 10a, 10b of the connector terminal that have entered the material supply section B are vertically oriented in the longitudinal direction, facing each other and with each carrier section 2 (FIG. 7) facing upward. conveyed horizontally. In order to facilitate such transportation, as shown in FIG. 7, the carrier portion 2 (the surface on the plated contact side of the pin 1) of the continuous strip 10 is provided with dowels at predetermined intervals in the longitudinal direction. A protrusion) 5 is provided.

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).

Figure 10 shows a pair of continuous strips io of the connector terminal,
The conveyance section of a and 10b is seen in a cross section perpendicular to the conveyance direction. The rail member 33 that guides the continuous strips 10a, 10b extends in the longitudinal horizontal direction, and grooves 34a, 34b in the longitudinal horizontal direction are provided on both vertical sides.

The dowels 5 of the inner carrier parts of the continuous strips 10a, 10b are placed along these grooves 34a, 34b, and the continuous strips IQa, 10b are placed between the guide members 35a, 35b and both sides of the rail member 33.
Guide them to hang it. Note that 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. The back wiring board has connector pins with a spacing of 2.5 mm (usually called millimeter size),
There are two types of 2.54 cranes (inch size).
The connector terminal driving machine disclosed in 2 has a metric size driving head E in order to be applied to both of these sizes.
and inch size driving head F (
(FIGS. 5 and 11) That is, the pitch of the connector pins 1 (FIG. 5) of the connector terminal continuous strip 10 is set in advance to millimeter size (2.50). In order to apply this to an inch-sized (2.54 m) driving head F, a wedge-shaped punch 37 is driven from both sides of the carrier portion 2 of the continuous strip 1o, thereby stretching the carrier portion 2 and connecting the connector pin 1. The pitch between them is enlarged to approximate the inch-sized pitch. In this case, it is not necessary to punch the punch 37 into the positions of the carrier part 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
Drive a punch between the 1st and 6th pins and between the 10th and 11th pins, thereby stretching both sides in the direction of the arrow, then between the 2nd and 3rd pins indicated by B. Then, by driving a punch between the 13th and 14th pins, both ends are stretched as shown by double arrows. If it is extended by 0.12 m 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, the connector terminal modified by changing the bottom margin and the front side in this way approximates an inch-sized connector terminal, and can be used as an inch-sized connector terminal in practice. Note that, of course, when applying the millimeter-sized driving head E, no such modification is required.

In FIG. 11, the continuous strip 10 that has passed through the connector terminal size adjustment section is speed-adjusted and absorbed in a buffer unit K (sag section), and then fed to the driving head E or F. During each cycle of driving, the driving heads E, F remain stationary on a plane, while the X-Y table G moves according to a predetermined program. That is, the millimeter-sized back wiring board 14a is designed so that the connector pins are driven in the direction shown by the line 39a.
Further, the XY table G is moved so that the inch-sized bank wiring board 14b is driven from the connector pin in the direction shown by the line 39b.

Although the embodiment shown is one in which both driving heads E and F are set in one automatic driving machine, two driving heads of the same type may be installed in parallel. Alternatively, different types of driving heads may be replaced one by one.

Figure 1 is a front view of the symmetrical connector pin driving head.
FIG. 2 is an enlarged view of the section ■ in FIG. 1.

The driving head 41 is supported by means not shown so that it can reciprocate in the vertical direction. The shaft 42 of the head 41 has a pair of clamp arms 43a and 4 extending downward.
3b is rotatably attached, and a core 4 is attached at the lower end of these clamp arms 43a, 43b as shown in FIG.
4 and a pair of connector terminal strips 10a, 1
Clamp 0b.

At this time, the strips 10a and 10b have already been cut into lengths equal to the number of pins to be driven in one cycle.

A core 44 extending in the longitudinal direction (perpendicular to the plane of the paper in FIGS. 1 and 2) is connected to the head 41 by unrelated means so that it can move up and down together with the head 4.

A pair of clamp arms 43a.

A comb-shaped protrusion 45a in the longitudinal direction is provided inside the lower end of 43b.

45b are provided, and these protrusions 45a, 45b enter the gap between the pins 1 of the connector terminal strips IQa, 10b, and the strips 10a, 10b are clamped between the groove between the protrusions 45a, 45b and the core 44. That's what I do.

A shaft 4 is provided on both sides of the pair of clamp arms 43a and 43b.
a pair of shafts 45a attached to the head 41 in parallel with 2;
Cutting blades 47a and 47b that are rotatable about 46b are attached. Between the clamp arms 43a, 43b and the cutting blades 47a, 47b, compression springs 48a, 48b are provided above the shafts 46a, 46b, and elastic cushioning materials 49a, 49b are provided below, respectively.

Also, both sides 50a, 5 of the pair of cutting blades 47a, 47b
0b has a predetermined ring portion as a cam surface. Cutting blade 47
There are longitudinal comb-like cutting lines 54a, 54b at the lower ends of the clamp arms 43a, 47b, as shown in FIGS.
A die 56 passes through a window 55 provided in the lower part of the connector terminal strip 43b (slightly above the comb-like protrusions 45a and 45b) corresponding to the longitudinal direction, and is located between the pair of connector terminal strips IQa and 10b.
By moving towards the connector terminal strip 1
The connector pins 0a and 10b can be separated into individual connector pins by cutting near the carrier portion 2 (FIG. 7). Note that the die 56 is fixedly installed in the longitudinal direction and has cuts through which the cutting lines 54a and 54b escape.

On both sides of the pair of cutting blades 47a, 47b, there are levers 52 that can rotate around fixed shafts 51a, 51b parallel to the shaft 42.
rollers 53a, 53b attached to the lower end of the lever are in contact with the aforementioned cam surfaces 50a, 50b of the cutting blades 47a, 47b.

When the workpiece strip IQa, lob is sent to a predetermined position on the driving head in an unclamped state, a cam (not shown) is activated, and a pair of levers 52a, 5 on both sides of the driving head are activated.
2b is moved inward in the direction of the arrow around the fixed shafts 51a, 51b. This movement is caused by the cutting blade 47a.

It is transmitted to the pair of clamp arms 43a, 43b via the elastic cushioning materials 49a, 49b of 47b, and clamps and holds the pair of strips 10a, 10b on the core 44 as described above (clamp position).

Next, when the pair of levers 52a, 52b move further inward, the pair of cutting blades 47a, 47b move inward with respect to the clamp arms 43a, 43b around the shafts 46a, 46b against the elastic cushioning materials 49a, 49b. The comb-shaped cutting lines 54a, 54b at the lower ends pass through the window 55 as described above, and the pair of strips 10a, 10b are cut into the die 5.
6 to separate carrier 2 (Fig. 7) (
cutting position). When the cutting is completed, a pair of levers 52a,
52b back to the aforementioned clamp position. As a result, the cutting lines 54a, 54b at the lower ends of the cutting blades 47a, 47b are pulled out of the die 56 and moved outward from the windows 55 of the clamp arms 43a, 43b. At this point, the terminal pin remains clamped.

Next, drive in the termi and narupin. In order to smoothly insert and fold a large number of terminal pins into a large number of pin insertion holes 15 of the back wiring board 14 at the same time, a guide member 58 is installed just above the pin insertion holes 15 of the back wiring board 14, and a guide member 58 is installed just above the pin insertion holes 15 of the back wiring board 14. The lower end is smoothly guided into the pin insertion hole 15.

When the unit of the driving head 41 (including the clamp arm and the cutting blade) descends, the cam surfaces 50a and 50b on both sides of the cutting blades 47a and 47b contact the cam driven rollers 53a and 53b at the lower ends of the levers 52a and 52b. while descending. When the tip of the connector pin 1 reaches a position immediately in front of the guide member 58, the cam surfaces 50a of the cutting blades 47a, 47b,
The recessed portion 60 of 50b is located at the position of the cam driven rollers 53a, 53b. This causes the connector pin 1 to move to the lever 52.
spring 4 without receiving the clamping force from a, 52b.
It will be clamped only by 8a and 48b with a weak force to the extent that it will not fall off.

Therefore, the connector pin 1 can easily follow the guide member 58 or the pin insertion hole 15 of the back wiring board 14. In order to ensure secure driving, after the tip of the connector pin 1 faces the terminal guide member 58 or the pin insertion hole 15 of the back wiring board 14, it is cut so that it is strongly clamped again by the force of the levers 52a and 52b. The length of the recess 60 of the cam surfaces 50a, 50b of the blades 47a, 47b is determined. When driving to a predetermined depth is completed, the levers 52a and 52b open to release the clamp, and the driving head 41 rises to the initial position.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to automatically drive a large number of connector pins of a pair of facing continuous strips at the same time, thereby improving the work efficiency of driving connector pins. This allows application to automatic manufacturing machines for printed boards such as back wiring boards.

[Brief explanation of drawings]

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 section ■ in Fig. 1, Fig. 3 is a sectional view taken along line m-m in Fig. 2, and Fig. 4 is a A partial view of the clamp arm seen from the arrow ■ in Figure 2, Figure 5 is a schematic perspective view showing the entire automatic connector terminal driving machine, and Figure 6 is a continuous strip of connector terminal rolled into a roll. Fig. 7 is a perspective view showing the state, and Fig. 7 is a plan view of the continuous strip of the connector terminal.
The figure is a perspective view of the back wiring board into which connector terminals (pins) have been driven, Figure 9 is a partial sectional view of the back wiring board into which a pair of connector pins have been driven, and Figure 10 is the conveyance section for continuous strip material. 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, IQb) Continuous strip material, 14...
Back wiring board, 15...pin insertion hole,
33...Transportation rail, 34a, 34b-groove, 37-...punch, 41...driver head, 43a, 43b...clamp arm, 44...core, 47a, 47b...・Cutting blade, 50a, 50
b...Cam surface, 52a, 52b-...Lever, 56.
...Dice, 58...Pin guide, 60...
・Concavity.

Claims (1)

[Claims] 1. A plurality of connector pins are integrally connected in a carrier part to form a comb-shaped band, and the pin portions of a pair of comb-shaped bands are arranged substantially parallel to each other with a longitudinal core sandwiched therebetween. a carrier of the comb-shaped strip while the clamp arms clamp the connector pin portion of the comb-shaped strip; 1. A connector terminal driving head comprising a pair of cutting blades for cutting a portion of the connector pin and separating the connector pins into individual connector pins. 2. 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 material, and each of the pair of clamp arms is also comb-shaped in the longitudinal direction corresponding to the spacing of the connector pins of the comb-shaped strip material. A plurality of windows are arranged side by side, and each tooth of the comb-like blade passes through the clamp arm from each window to cut a pair of comb-like strips with respect to a die between them. The driving head described in Range 1.