JPH0763119B2 - Contact pin press fitting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a contact pin press-fitting device for press-fitting a contact pin into a through hole of a printed wiring board.

[Conventional technology]

Generally, a connector is mounted on a printed wiring board by first press-fitting a contact pin into a through hole of the printed wiring board and then press-fitting a housing into the contact pin.

FIG. 2 is a side view showing the structure of a conventional contact pin press-fitting device. As shown in the figure, the printed wiring board 1 is provided with through holes 1a into which the contact pins 2 are press fitted. A table (not shown) on which the printed wiring board 1 is placed is movable in the horizontal direction by numerical control, and a press fit supported by an elevating mechanism (not shown) is provided above the table. A head 3 is provided, and a press-fitting receiving member 5 connected to a rod 4a of a cylinder 4 is provided below the head 3 so as to face the press-fitting head 3.

When press-fitting the contact pins 2, first, the printed wiring board 1 is positioned and placed on the table, and the table is moved horizontally to position the press-fitting head 3. Next, the cylinder 4 is driven to raise the press-fitting receiving material 5 and set it to a position where it comes into contact with the lower surface of the printed wiring board 1. Further, the elevating mechanism is driven to lower the press-fitting head 3 in which the contact pins 2 for one row are set, and the contact pins 2 are press-fitted and inserted into the through holes 1a. At this time, the contact pin 2 protruding from the lower surface of the printed wiring board 1 is inserted into the clearance hole 5a-1 of the press-fitting receiving material 5, so that the press-fitting receiving material 5 does not interfere with the press-fitting force applied to the printed wiring board 1. Can receive. Contact pin 2
When the press-fitting is completed, the press-fitting head 3 ascends and the press-fitting receiving member 5 simultaneously descends. Then, the next contact pin 2 is set on the press-fitting head 3 to complete the operation for one cycle. Then, the table is moved by the pitch of the through hole 1a and the above cycle is repeated. At this time, the contact pin 2 already inserted is protected by being inserted into the escape hole 5a-2 adjacent to the previously inserted escape hole 5a-1.
By repeating the above cycle four times, the contact pin 2 for one connector is inserted. Then, the housing is press-fitted to complete the mounting of the connector.

[Problems to be solved by the invention]

However, in the above-mentioned conventional example, when the printed wiring board 1 is displaced for each cycle of press-fitting, the press-fitting receiving material 5 is once lowered so as to escape the contact pin 2 from the press-fitting receiving material 5, so that the contact pin 2 is released from the escape hole 5a. Escape and printed wiring board 1
It is necessary to lift the press-fitting receiving portion 5 again after inserting the contact pin 2 to insert the contact pin 2 into the escape hole 5a. At this time, the contact pin 2 comes into contact with the press-fitting receiving material 5 to cause scratches and further damage. There was a problem that there is a fear. Furthermore, it is necessary to separately perform the press-fitting process of the housing, which is troublesome. The present invention aims to solve these problems.

[Means for solving problems]

The means taken by the present invention to solve the problems will be described with reference to FIG. 1 corresponding to one embodiment of the present invention. The present invention comprises a printed wiring board mounting table movable in the front-rear direction, a press-fitting head 3 for press-fitting the contact pin 2 into the through hole 1a of the printed wiring board 1 is provided above the table, and the contact pin is provided. This is done in a contact pin press-fitting device in which a press-fitting receiving member 27 having two escape holes 27b and abutting against the lower surface of the printed wiring board 1 and receiving a press-in force of the press-fitting head 3 is supported by a vertically movable elevating member 21. The press-fitting receiving member 27 is supported by the elevating member 21 so as to be slidable in the front-rear direction, and a transfer mechanism for moving the press-fitting receiving member 27 to a required position is additionally provided.

[Action]

The operation of the above means will be described with reference to FIGS. 1 and 5 (a) and (b). According to the above means,
The contact pin 2 is inserted into the through hole 1a of the printed wiring board 1 by the press-fitting head 3 in a state where the press-fitting receiving material 27 is raised and is in contact with the lower surface of the printed wiring board 1. The portion projecting from the lower surface of is inserted into the escape hole 27b of the press-fitting receiving member 27. After that, when the table is moved by the pitch of the through holes 1a, the press-fitting receiving material 27 also moves by following the bias of the contact pin 2. In this state, the press-fitting of the contact pin 2 for one connector can be completed without moving the press-fitting receiving member 27 up and down by the press-fitting head 3.

〔Example〕

A contact pin press-fitting device according to an embodiment of the present invention will be described with reference to the drawings. First, the structure of each part of the apparatus will be described with reference to FIGS.

FIG. 3 is a partial side view showing the structure of the lower part of the device.
As shown in the figure, a rail 7 is laid on the base 6, and a supporting member 8 is slidably mounted on the rail 7 by a linear guide 9. The support member 8 is an L-shaped member including a vertical plate portion 8a and a horizontal plate portion 8b,
The slide plate 10 and the connecting member 11 are supported.

The slide plate 10 is a plate member in which the right side portion 10a of the upper surface in the drawing is lower and the left side portion 10b is higher, that is, a step is formed on the upper surface, and is supported by the guide roller 12 so as to be slidable in the left and right directions in the drawing. Has been done. Further, one end of the spring 13 is fixed to an end portion of the side surface of the slide plate 10, and the other end is fixed to a protrusion 8c protruding from the horizontal plate portion 8b of the support member 8, whereby the slide plate 10 is provided. Is urged to the left side in the figure, and the contact plate 8d fixed to the tip side of the horizontal plate portion 8b.
Abuts and is locked.

The connecting member 11 is a U-shaped member composed of a pair of parallel plate portions 11a and a connecting plate portion 11b connecting the parallel plate portions 11a. The connecting plate portion 11b is slidable vertically by the guide roller 14 to the vertical plate portion 8a. It is supported. A shaft 11c is installed between the parallel plate portions 11a, and the lower end of the arm 15 and the roller 1 are mounted on the shaft 11c.
6 is pivotally supported. The roller 16 is normally in contact with the lower portion 10a of the upper surface of the slide plate 10, and the load applied to the connecting member 11 is supported by this contact. Spring 17
Has one end fixed to the upper side of the connecting member 11 and the other end fixed to a protrusion 8e protruding from the vertical plate portion 8a of the supporting member 8, and the spring 17 causes the connecting member 11 to move downward. The roller 16 is urged to ensure contact between the roller 16 and the upper surface of the slide plate 10.

Also, on the base 6, the rail 7 is on the rear end side (right side in the figure).
A support plate 6a is erected at a position extended to a cylinder 18, and the cylinder 18 is horizontally supported by the support plate 6a. The tip of the rod 18a of the cylinder 18 is connected to the lower side of the support member 8. On the other hand, a support plate 6b is erected at a position where the rail 7 is extended to the tip side (left side in the figure), and a stopper 19 is provided on this.
And the cylinder 20 is supported. Stopper 19 is support plate 6b
Bolts that are screwed into the screw holes of, and are fixed by nuts in a state of protruding by a required dimension. This stopper 19
When the supporting member 8 moves forward on the rail 7 and reaches a required position by the driving of the cylinder 18, it comes into contact with the contact plate 8d to stop the forward movement. Also the rod of cylinder 20
A push-in bar 20b is attached to the tip of 20a.

FIG. 1 is a partial side view showing the structure of the upper portion of the apparatus.
As shown in the figure, an elevating member 21 is vertically slidably supported by a guide roller 22 on a column 6c standing upright near the tip of the rail 7 on the base 6 (see FIG. 3). .
The elevating member 21 is connected to the upper end of the arm 15 by a bearing 21a attached to the lower end thereof. When the supporting member 8 (see FIG. 3) moves forward, the elevating member 21 rises and rises through the arm 15, The structure is such that when 8 moves backward, it descends.

A slide plate 23 is slidably supported by a guide roller 24 on the upper end of the elevating member 21. Further, an abutting plate portion 23a is formed so as to project downward on one side of the sliding plate 23, and
Abutting claw members 23b are attached to the other side, and these abut on the upper end side of the elevating member 21 to restrain the moving range of the sliding plate 23 in correspondence with the size of one connector.

FIG. 4 is a partial rear view showing the structure near the sliding plate of the present apparatus. The contact claw member 23b is omitted in the figure.
As shown in the figure, the bearing 25 is supported on both sides of the upper side of the lifting member 21 and is engaged with the sliding plate 23, and the bearing 26 supported by the lower surface of the sliding plate 23 is engaged with the lifting member 21. It is supported slidably only in the front-rear direction by being constrained in the direction and the left-right direction.

A press-fit receiving member 27 is fixedly provided on the upper surface of the sliding plate 23. This press-fit receiving member 27 has an opening 27 that penetrates from the front to the back.
A rectangular material having a and formed on the printed wiring board 1
An escape hole 27b is provided on the upper surface corresponding to the through hole 1a for the connector (see FIG. 1). The above-mentioned opening 27a is provided to facilitate cleaning of the inside of the escape hole 27b and to reduce the weight.

Referring back to FIG. 1, a table (not shown) is provided above the elevating member 21 and is movable in the horizontal direction by numerical control.
The printed wiring board 1 is accurately positioned and placed on this table. The printed wiring board 1 is provided with a through hole 1a into which the contact pin 2 is press fitted. This apparatus mounts a connector including contact pins 2 and a housing 28 on the printed wiring board 1. This embodiment exemplifies mounting of a connector including contact pins 2 in four rows.

The gripping member 29 grips the housing 28 supplied from a housing supply device (not shown) and conveys it to a position below the table and above the press-fitting receiving member 27.

Further, a press-fitting head 3 is provided above the table. The press-fitting head 3 is supplied with the contact pins 2 from a contact pin supply device (not shown) and holds the contact pins 2 corresponding to one row of the connector, and an elevating mechanism (not shown). The contact pin 2 is supported on the printed wiring board 1 by being driven and lowered.
It is to be pressed into.

An arm 30 is pivotally supported in the middle of the lifting member 21.
A recess 30a is formed at one end of the arm 30. Further, a cylinder 31 is supported by a support arm 21b protruding from the lower side of the elevating member 21. Rod 31a of this cylinder 31
An engaging member 31b having protrusions formed on both side surfaces is attached to the tip of the, and the protrusion engages with the recess 30a of the arm 30. A roller 32 is pivotally supported at the other end of the arm 30, and a roller 33 is pivotally supported at the upper side of the elevating member 21, and one end of the wire rope 34 is fixed to the sliding plate 23.
The other end is fixed to the elevating member 21 via both rollers 32, 33.

Next, the operation of this device will be described.

First, in FIG. 3, when the cylinder 18 is driven, the supporting member 8 slides on the rail 7 by the linear guide 9 and is advanced to a position where it abuts on the stopper 19. Support member 8
The forward-and-backward movement raises the elevating member 21 through the arm 15.

At this time, as shown in FIG. 1, the rod 31a of the cylinder 31
Is in the advanced position and the arm 30 is in the clockwise rotated position. Therefore, since the roller 32 is located below, the wire rope 34 is in a tensioned state, and the sliding plate 23 is held at the right end. At this position, the row 27b-1 of the escape holes 27b at the left end of the press-fitting receiving member 27 is the press-fitting head 3
It is located at a position corresponding to the row of contact pins 2 to be gripped by. On the other hand, in the printed wiring board 1, the table is controlled so that the through hole 1a-1 in the leftmost row of the through holes 1a for one connector is located at the position corresponding to the contact pin 2 in the above one row. It is positioned. Further, the housing 28 supplied from the housing supply device is positioned above the press-fit receiving member 27 by the grip member 29.

5 (a) and 5 (b) are partial side views showing the operation of the main part of this apparatus. As shown in FIG. 3A, the above-mentioned lifting member
The press-fitting receiving member 27 is fitted into the housing 28 due to the rise of 21, and
Further, it contacts the lower surface of the printed wiring board 1. At this time, the through hole 1a of the printed wiring board 1, the through hole 28a of the housing 28, and the escape hole 27b of the press-fit receiving member 27 are aligned. Then, the press-fitting head 3 is lowered by the driving of the lifting device, and the contact pins 2 have one row of through holes 1a-1 and one row of through holes 28.
It is press-fitted into a-1 and the lower end is a row of escape holes 27b.
-1 is inserted.

When the press-fitting is completed, as shown in FIG. 5B, the press-fitting head 3 is lifted by driving the lifting device. Further, the cylinder 31 is driven to retract the rod 31a, and the arm 3
Rotate 0 counterclockwise. As a result, the roller 32 is displaced upward, the tension of the wire rope 34 is released, and the sliding plate 23 becomes free. In this state, the printed wiring board 1 is moved by one pitch of the through holes 1a by driving the table in preparation for the next press-fitting operation. At this time, since the sliding plate 23 is in a free state, the sliding plate 23 is urged by the housing 28 and the contact pin 2-1 already press-fitted and inserted, and is transferred in synchronization with the sliding plate 23. Therefore, the through hole 1a-2, the through hole 28-2, and the escape hole 27b-2 in the second row are located in correspondence with the contact pin 2-2 that is to be press-fitted next to the press-fitting head 3. Become. In this state, the press-fitting head 3 is moved down to contact the contact pins 2-2 in the second row.
Is press-fitted.

The above cycle is repeated to press fit all the rows of the contact pins 2 (four rows in this embodiment), whereby the connector including the contact pins 2 and the housing 28 is press-fitted and mounted.

In this way, the contact pin 2 is provided with an escape hole 27 for the press-fitting receiving member 27.
Since it can be press-fitted without being inserted into or removed from the b, it is possible to eliminate the risk of scratches or breakage in the conventional insertion and removal, and the housing 28 can be attached at the same time.

If it is not necessary to attach the housing 28, in FIG. 3, the cylinder 20 may be driven to drive the pushing bar 20b forward before driving the support member 8. In this state, when the support member 8 advances to the required position, the slide plate 10 is pressed against the pushing bar 20b, and the spring 13
And moves to the right with respect to the support member 8. As a result, the roller 16 comes into contact with the upper portion 10b of the upper surface of the slide plate 10, so that the connecting member 11, the arm 15, and the elevating member 21 are raised by the step difference between the portions 10a and 10b. This step difference is set corresponding to the thickness of the housing 28, so that the press-fitting receiving member 27 is brought into direct contact with the lower surface of the printed wiring board 1 without driving the gripping member 29, so that only the contact pin is contacted. The press-fitting operation will be performed.

〔The invention's effect〕

As described above, according to the present invention, after the press-fitting of the contact pin, when the table is moved by the pitch of the through holes, the press-fitting receiving member is also moved following the pressurization of the contact pin, and in this state. Since the next contact pin can be press-fitted, the press-fitting of the contact pin for one connector can be completed without moving the press-fitting receiving material up and down. Therefore, unlike the conventional case, it is not necessary to move the press-fitting receiving member up and down every time the contact pin is press-fitted, so that the contact pin can be prevented from being damaged. Further, the press-fitting receiving member can be brought into contact with the lower surface of the printed wiring board through the housing, and there is an advantage that the housing can be mounted at the same time when the contact pin is mounted.

[Brief description of drawings]

FIG. 1 is a partial side view showing a structure of an upper portion of a contact pin press-fitting apparatus according to an embodiment of the present invention, FIG. 2 is a side view showing a structure of a conventional contact pin press-fitting apparatus, and FIG. Partial side view showing the structure of the lower part of the device, FIG. 4 is a partial rear view showing the structure near the sliding plate, and FIGS. 5 (a) and 5 (b).
FIG. 7B is also a partial side view showing the operation of the main part. 1: Printed wiring board, 1a: Through hole, 2: Contact pin,
3: Press-fitting head, 21: Lifting member, 23: Sliding plate, 24: Guide roller, 27: Press-fitting receiving material, 27b: Escape hole, 28: Housing, 28
a: Through hole, 30: Arm, 31: Cylinder, 32, 33: Roller, 3
4: Wire rope.

Claims (1)

[Claims] 1. A through hole (1a) for a printed wiring board (1), comprising a printed wiring board mounting table movable in the front-back direction.
A press-fitting head (3) for press-fitting the contact pin (2) is provided above the table and has an escape hole (27b) for the contact pin (2) so as to abut against the lower surface of the printed wiring board (1). In a contact pin press-fitting device in which a press-fitting receiving member (27) that receives a pressure input from the press-fitting head (3) is supported by a vertically movable lifting member (21), the press-fitting receiving member (27) is a lifting member (21). ) Is slidably supported in the front-rear direction, and a transfer mechanism for transferring the press-fit receiving member (27) to a required position is additionally provided.