JPH03105886A - Connector pin press-in device - Google Patents

Abstract

PURPOSE:To press a connector pin into the through hole of a printed board without damaging the through hole nor causing continuity failure by providing a press-in means for pressing the connector pin into the through hole of the printed board. CONSTITUTION:A press-in head 12 is mounted while in a predetermined positional relation to cutting means 10 provided along a continuous band material 4, and a predetermined number of connector pins 32 in a state of band material are clamped by a clamper 14 stored in the press-in head 12. Under these conditions, cutting is carried out by cutting means 10 so that separated connector pins 32 are each clamped by the clamper 14. Then the press-in head 12 is removed from the cutting means 10 and each connector pin 32 is pressed into a printed board 18 by press-in means 16 while being clamped by the clamper 14. Thus each connector pin 32 is pressed into the through hole of the printed board 18 without damaging the through hole of the printed board 18 nor causing continuity failure.

Description

[Detailed Description of the Invention] Summary This invention relates to a connector pin press-fitting device used to manufacture printed circuit boards having connector pins such as back wiring boards, which does not damage the through holes of the printed circuit board and does not cause conduction defects. The purpose of the present invention is to provide a connector pin press-fitting device capable of press-fitting a connector pin into the above-mentioned through hole without causing any damage to the through-hole. A clamper for gripping a predetermined number of connector pins, a press-fitting head in which the clamper is housed, a cutting means for separating the connector pins gripped by the clamper, and a clamper for cutting a gamma board and a printed board into the press-fitting into a predetermined position. A press-fitting means is provided for supporting the connector pin in a positional relationship and for pushing out the clamper holding the cut connector pin and press-fitting the connector pin into the through-hole of the printed board.

INDUSTRIAL APPLICATION FIELD The present invention relates to a connector pin press-fitting device used for manufacturing printed boards having connector pins such as back wiring boards of racks for housing printed boards in electronic equipment, communication equipment, etc.

Conventionally, there are two ways to mount a connector on a back wiring board: ■ attaching the assembled connector parts to a printed board, and ■ press-fitting or soldering connector pins onto the printed board and attaching the connector pins to a connector made of an insulator. It is known that the housing is press-fitted. At first glance, method (2) is adopted from the viewpoint of productivity, parts cost, etc. A connector pin press-fitting device is a device used when carrying out method (1), and there is a demand for a connector pin press-fitting device suitable for improving the quality of the mounted connector.

Conventional technology When supplying connector pin material to a connector pin press-fitting device, conventionally a large number of connector pins are connected continuously and integrally using a continuous frame (carrier) to form a long comb-shaped continuous strip. It has been used since. When press-fitting connector pins using this type of continuous strip material, the continuous strip material is cut into connector-sized pieces (for example, containing several dozen connector pins), and these small pieces are attached to the printed circuit board. After temporary insertion, a suitable tool is used to press-fit the continuous frame portion, and then the continuous frame portion is removed.

Problems to be Solved by the Invention With the conventional technology, connector pins temporarily inserted into a printed board tend to tilt, which may damage through-holes in the printed board during press-fitting.

In addition, a connector housing made of resin mold etc. is attached (press fit) from the tip of the connector pin on the side where the continuous frame is cut and removed from a small piece of continuous strip material that is press fit into the printed board.
Therefore, when the connector housing is attached, the connector housing is scraped by the cut portion of the connector pin and mold powder is generated, and if this mold powder adheres to the connector, poor conductivity may occur.

The present invention was created in view of these problems.
The object of the present invention is to provide a connector pin press-fitting device capable of press-fitting a connecting pin into a through-hole of a printed circuit board without damaging the through-hole and without causing conduction failure.

Means for Solving the Problems The connector pin press-fitting device of the present invention, which has been made to solve the above-mentioned technical problems, includes a means for supplying a continuous strip material into which a large number of connector pins are continuously shaped, and a supply means for supplying a continuous strip material into which a large number of connector pins are continuously shaped a clamper for gripping a predetermined number of connector pins in a predetermined state; a press-fit head in which the clamper is housed; a cutting means for separating the connector pins gripped by the clamper; The connector pin is supported in a positional relationship, and press-fitting means is provided for pushing out the clamper holding the cut connector pin and press-fitting the connector pin into the through-hole of the blind board.

According to the above structure, after the connector pins gripped by the clamper are separated by the cutting means, the connector pins can be press-fitted into the through holes of the printed board from the cut side. Therefore, when the connector housing is attached to the connector pins press-fitted into the printed circuit board, the connector housing is less likely to be damaged, thereby eliminating the possibility of poor conductivity caused by mold powder or the like. In addition, the connector pin can be press-fitted into the through hole of the printed circuit board while the connector pin is being held by the clamper.
There is no risk of damage to the through hole due to the connector pin tilting during press-fitting.

Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a schematic structural diagram of a connector pin press-fitting device showing an embodiment of the present invention, and FIG. 2 is an external view thereof.

A continuous strip 4 is supplied from the supply roll 2 in the direction of arrow A. This continuous band material 4 has connector pins 32 continuously formed in a comb shape as described later.

The continuous strip material 4 is intermittently fed by a feeding means 6 consisting of a roller having protrusions 6a formed on the circumference at equal intervals at the intervals of the connector pins, and a connector pin detector 8 detects whether or not a bottle has fallen off. Will be checked.

When separating the connector pins from the continuous strip 4,
The press-fitting head 12 is attached in a predetermined positional relationship to the cutting means 10 provided along the continuous strip 4, and the press-fitting head 1
A predetermined number of connector pins in the form of a strip are gripped by a clamper 14 housed in the clamper 2 . When cutting is performed by the cutting means IO in this state, each separated connector pin is held by the clamper 14, respectively.

Therefore, in this state, the press-fitting head 12 is removed from the cutting hand 10, and the connector pin can be press-fitted into the printed board 18 by the press-fitting means 16 while being held by the clamper 14. In the press-fitting means 16, 20 is an X-Y table that can move the printed board 18 to any position within a predetermined range on a horizontal plane, and 22 is a table that pushes out the clamper 14 holding the cut connector pin to remove the connector pin. This is a pressing means for press-fitting into the through hole of the printed board 18. On the other hand, the continuous strip 4 from which the connector pins have been cut is cut into an appropriate length by a cutter 24 and stored in a scrap box 28 as scrap 26.

Figure 3 shows an external view of the back wiring board (back panel). A large number of connector pins 32 are inserted and fixed into through holes (not shown) of the printed circuit board 18 in which a printed circuit (not shown) is formed. As shown in the figure, connectors 36 of other printed circuit boards 34 are coupled.

The connector pin 32 includes a connecting portion 32a with the connector 36, a central enlarged portion 32b, and a terminal portion 32c protruding from the back surface of the printed board l8. The connecting portion 32a is plated with gold. The central enlarged portion 32b is formed by flat punching and firmly fixes the connector pin 32 to the printed board 18 when the connector pin 32 is press-fitted into the printed board 18. For example, a wrapping wire 38 is coupled to the terminal portion 32c.

Such connector pins 32 are formed into a comb-shape in which a large number of connector pins 32 are connected in parallel by a continuous frame 40, as shown in FIG. 5, by press-cutting a band-shaped metal sheet.

Feed holes 42 are formed in the continuous frame 40 at regular intervals. The connecting portion 32a of each connector pin 32 is plated with gold in the form of such a continuous strip 4. Therefore, the plating work can be performed more smoothly than when the plating work is performed separately.

FIG. 6 is a detailed view of the continuous strip material 4 supply section.

The continuous strip material 4 is wound as a supply roll 2 together with an interlayer paper 44 for preventing the connector pins from getting entangled with each other.
6 is housed in a tray 48.

50 is a motor for feeding out the strip material, and 52 is a motor for winding up the interlayer paper. The continuous strip 4 is fed via a slack detector 54. The slack detector 54 detects the tension of the continuous strip 4, and based on this, the feed motor 50 is controlled so that an appropriate amount of strip is always supplied.

FIG. 7 is a perspective view of the press-fit head 12. A slider 58 that is slidable in the direction of arrow B relative to the head holder 56 is mounted within the head holder 56 .

Although not shown, the head holder 56 is provided with a handle for easy handling. A clamper 14 is provided at the end (front end) of the slider 58. As shown in detail in FIG. 8, the clamper 14 includes a lower plate 60 having parallel V-grooves 60a for receiving the connector pins 32, and protrusions 62a for pressing the connector pins 32 corresponding to each V-groove 60a. In order to equalize the force for gripping each connector pin 32, the upper plate 62 has a slit 62b formed by electrical discharge machining, for example.
is formed. The upper plate 62 is provided at the front end of the clamp plate 64. The clamp plate 64 is connected to a cylinder 68 fixed to the slider 58 by a bracket 66. The clamp plate 64 is attached to the upper surface of the slider 58 by a swing lever 70, 72 whose lower end is pivotally connected to the slider 58. For example, when air is sent into the cylinder 68 and the cylinder 68 is driven in the direction of the arrow B, the moving levers 70 and 72 swing in the direction of the arrow C, causing the upper plate 62 for holding the pin to protrude forward. Due to its own elasticity, the connector pin 3 in the V groove 60a of the lower plate 60
Clamp 2. The clamper 14 clamps the gold-plated connection portion 32a of the connector pin 32 of the continuous strip material 4.

FIG. 9 is a front view of the cutting means 10, and FIG. 10 is a side view thereof. The cutting means 10 cuts the connector pin 3 of the continuous strip material 4.
The press-fitting head 12 is attached to a lower fixed part 74 for holding a predetermined number of clampers 12 by the clamper 14, and an upper movable part 76 that can be moved up and down. The upper movable part 76 is
A first portion 78 connected to a shank 94 of a toggle mechanism (not shown) provided to increase the pressing force, and a second portion biased downwardly by a biasing member 82 with respect to the first portion 78. It consists of 80. In the lower fixed part 74, 84 is a guide, 86 is a cutting goug, and the continuous strip 4 is supplied along these guides 84 and die 86. When the upper movable part 76 is moved downward, first, the position of the continuous strip 4 is determined by the protrusion 90 and the separator 92 provided on the second part 80, and the position of the continuous strip 4 is determined against the biasing force of the biasing member 82. Furthermore, the first part 7 of the upper movable part
8 downward, the cutter 88 and die 86
As a result, the connector pins held by the clampers are cut and separated from the continuous strip material 4, respectively.

The positional relationship among the cutter 88, die 86, and continuous strip material 4 is shown in FIGS. 11 and 12. The die 86 has V grooves 86a formed in correspondence with the positions of the connector pins 32 held by the clamper, and the cutter 88 has
A V projection 88a is formed corresponding to the V groove 86a. As a result, when the cutter 88 is lowered relative to the die 86, each V protrusion 88a enters into each V groove 86a, and the connector pin 32 is cut and separated.

In this embodiment, a V notch 32 is provided on the cutter 88 side near the continuous frame 40 at the terminal portion 32C of the connector pin.
A notch 32d is formed in advance, and cutting is performed at this notch 32d.

The state of deformation in the vicinity of the cut portion of the connector pin will be explained with reference to FIG. FIG. 5A shows the moment when the cutter 88 descends and comes into contact with the connector pin 32 placed on the gouer 86. From this state, as shown in the same figure (b),
As the cutter 88 is further lowered, the cutter 88
As the connector pin 32 moves, the shape of the connector pin 32 is deformed, especially in the vicinity of the notch 32d. Furthermore, the same figure (C
), as the cutter 88 is lowered, the connector pin 32 is cut approximately at the center of the notch.

A perspective view and a front view of the cut end of the connector pin 32 are shown in FIG.
Shown in Figure 4. The cut end of the connector pin 32 has a generally square pyramid shape. That is, by forming the notch 32d in the connector pin 32, a p-plane is formed,
V protrusion 88a and V groove 86 on cutter 88 and die 86
The q and r planes are formed by the shape of a, respectively, and the connector pin 32 is formed as explained with reference to FIG.
The S-plane is shaped by plastic deformation. Since the cut ends of the connector pins have a substantially quadrangular pyramidal shape, the connector pins can be easily guided into the through holes of the printed board when press-fitting the connector pins into the printed board. Therefore, damage to the through-hole during press-fitting is significantly reduced.

Since the connector pin 32 cut in this way is held by the clamper of the press-fitting head, in this state, the press-fitting head 12 is attached to the press-fitting means 16 as shown in FIG. The connector pins are press-fitted into the predetermined positions by driving the X-Y table 20 so that the through-holes in the printed board 18 are located at predetermined positions, and by moving the handle 96 and lowering the clamper. In this case, since each connector pin is vertically supported by the talumbar without any displacement, there is no risk of damage to the through-holes of the printed board during press-fitting. Looking at the connector pin 32 press-fitted into the printed board 18, the cut end of the connector pin 32 protrudes to the back side of the printed board 18, and
What protrudes from the surface side is the end formed by press working of the connector pin 32 (connection part 32 of the connector pin).
a>, when a resin mold or the like is attached to the connector pin 32 from the front side of the printed board 18 to complete the connector, there is no fear that the resin mold will be scraped as in the conventional case. Therefore, when using a completely stripped connector, poor conductivity due to mold powder is less likely to occur.

Effects of the Invention As explained above, according to the present invention, a connector pin can be press-fitted into a through hole of a printed board without damaging the through hole of the printed board and without causing poor continuity. This has the advantage that a possible connector pin press-fitting device is provided.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of a connector pin press-fitting device showing an embodiment of the present invention, Fig. 2 is an external view thereof, Fig. 3 is an external view of a back panel, and Fig. 4 is a partial sectional view of the back panel. Fig. 5 is a perspective view of the connector pin, Fig. 6 is a perspective view of the continuous strip supply section, Fig. 7 is a perspective view of the press-fit head, and Fig. 8 is a partial front view showing the state in which the clamper grips the connector pin. Fig. 9 is a front view of the cutting means, Fig. 10 is a side view thereof, Fig. 11 is a perspective view showing the positional relationship of the cutter, goug and continuous strip material, and Fig. 12 is a plan view showing the same positional relationship. Figure 13 is an explanatory diagram of the connector, and Figure 14 is a front view of the connector. Perspective view (a) of a deformed cut end of the bottle in the vicinity of the cut portion of the bottle; 4... Continuous band material; 12... Press-fitting head; 16... Press-fitting means; 32... Connector pin. 10... Cutting means, 14... Clamper, 18... Printed board,

Claims (1)

[Claims] A means for supplying a continuous strip (4) in which a large number of connector pins (32) are continuously formed, and a clamper (14) that grips a predetermined number of connector pins (32) in the strip state. a press-fit head (12) in which the clamper (14) is accommodated, a cutting means (10) for separating the connector pins (32) gripped by the clamper (14), and a press-fit head (12) that accommodates the clamper (14); ) and printed board (18) in a predetermined positional relationship, and pushes out the clamper (14) holding the cut connector pin (32) to move the connector pin (32) onto the printed board (18). A connector pin press-fitting device comprising a press-fitting means (16) for press-fitting into a through hole.