JP3356342B2 - Terminal insertion method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for fixing a terminal to a substrate. The terminal insertion method of the present invention can be applied to a single-in-line (SIP) hybrid IC or the like.

[0002]

2. Description of the Related Art Conventionally, terminals are fixed to one side of a circuit board (also simply referred to as a board in this specification) as shown in FIG.
Long terminal row 1 in which each terminal 102 is formed on one side
03 is pulled out and the terminal row 103 is inserted at a predetermined board insertion position.
Then, the substrate 104 is sequentially inserted into the end of each terminal 102 in a direction perpendicular to the pull-out direction to fix (press-fit) each terminal 102 to the terminal fixing portion of the substrate 104, and then to insert each terminal 102 downstream from the substrate insertion position. The terminal row 103 is cut for each substrate 104 while being soldered to the substrate 1. The above-described insertion of the board 104 is generally performed using an insertion guide 105 that guides one side parallel to the insertion direction of the board 104.

[0003]

However, the above-described terminal insertion method has the following problems. First, in order to prevent interference between adjacent substrates 104 inserted into the terminal array 103, it is necessary to cut off one or two terminals of the terminal array 103 between adjacent substrates. Next, in order to insert the board 104, it is necessary to push the board 104 along the insertion guide 105. That is, if the insertion guides 105 are provided on both sides of the substrate 103, the inserted substrate 104a becomes an obstacle, and the substrate 104a is cracked or chipped due to interference between the insertion guide and the inserted substrate 104a.

However, the insertion of the substrate 104 by the insertion guide 105 on only one side causes a decrease in insertion accuracy. That is, if the insertion guide 105 is provided on only one side, the board 104 may be slightly inserted obliquely.
04 is likely to occur between the terminal connection position of the terminal 04 and the terminal 102, and especially the shrink pitch (1.778).
(mm pitch), this positional shift became a significant problem.

Of course, between adjacent substrates 104, 104
If the number of cut-off terminals 103 is set to two or more, interference between the inserted board 104a and the insertion guide can be eliminated, and both-side guides of the board 104 can be realized.
3, the problem that the utilization rate decreases. The present invention has been made in view of the above problems, and an object of the present invention is to provide a terminal insertion method that realizes an improvement in terminal row utilization and an improvement in terminal insertion accuracy.

[0006]

According to the present invention, there is provided a method of inserting a terminal, comprising: loading a substrate for controlling displacement of the substrate into a predetermined terminal insertion position; bringing a substrate stopper into contact with the substrate; Holding the board, a terminal row in which terminals for one board are formed in advance is inserted toward the board at the terminal insertion position and locked to the board, and the board with the terminal row locked is It is characterized in that it is carried out from the terminal insertion position.

In a preferred aspect, the substrate is held at the terminal insertion position by bringing a substrate stopper into contact with an end surface of the substrate on a terminal non-insertion side.

[0008]

As described above, according to the terminal insertion method of the present invention, the board stopper for regulating the displacement of the board (particularly, the displacement of the board at the time of inserting the row of terminals) is brought into contact with the board and the board is inserted into the predetermined terminal. It is held at the insertion position, and the terminal row in which the terminals for one board are formed in advance is inserted toward the board held at the terminal insertion position and fixed (press-fitted) to the board, thereby improving the utilization rate of the terminal row. In addition, the terminal insertion accuracy can be improved.

That is, there is no need to form a space by providing a predetermined number of cutout terminals between adjacent substrates as in a conventional continuous terminal row. Further, since the board stopper is brought into contact with the board to restrict the displacement of the board at the time of inserting the row of terminals, there is no fluctuation of the board due to the insertion of the row of terminals, and accurate positioning is realized. In a preferred aspect, the substrate is held at the terminal insertion position by bringing the substrate stopper into contact with the end surface of the substrate on the terminal non-insertion side. With this configuration, the substrate can be easily and accurately positioned at the terminal insertion position.

That is, since the position of the conductor surface on which the terminals are fixed on the substrate is formed with reference to the end surface of the substrate, the substrate stopper is brought into contact with the end surface of the substrate on the non-terminal insertion side, so that, for example, the terminal When the substrate is pressed into the substrate, the substrate is not displaced. That is, the substrate stopper prevents displacement and positioning of the substrate.

[0011]

【Example】

(Embodiment 1) An example of a terminal insertion machine to which the terminal insertion method of the present invention is applied will be described with reference to FIG. In this terminal insertion machine, 1 is a substrate, 1a is a substrate having a terminal row inserted, 2 is a terminal row, 2a is a terminal row after cutting, 3 is a fixed side holder, 4
Is a movable side holder, 5 is a pallet for transferring a substrate, 6 is a substrate transferring device, 7 is a terminal cutting device, 8 is an indexing device, 9 is a terminal insertion device, 10 is a terminal moving device, 11 is a pallet conveying device, 12 Denotes a conveyor in the preceding process, and 13 denotes a conveyor in the subsequent process.

A more detailed description and operation of the terminal insertion machine will be described below in order. (Loading of the substrate 1 into the terminal insertion position) The substrate transfer device 6 has a chuck (not shown). The chuck descends onto the conveyor 12 and sucks or chucks the substrate 1 transported by the conveyor 12 to slightly move up, and the pallet 5
When the substrate 1 is placed on the pallet 5, the chuck of the substrate 1 is released and the substrate 1 is lifted again to return to the original position. Such a handling device is well known and further description is omitted.

First, a pallet 5 (not shown) is provided on the base end of a pallet table 15 having a flat pallet transfer surface.
Is placed from the return conveyor. The pallets 5 are placed on the pallet table 15 in a row in the transport direction by a pallet transport device 11 described later. The pallet transport device 11 includes a comb portion 110 extending on the pallet table 15 in the pallet transport direction, and a driving portion (not shown) for operating the comb portion 110. On one long side of the comb part 110, a comb tooth part 111 that fits exactly between the pallets 5.
Are protruded in a direction perpendicular to the transport direction. Driven by this drive unit, the comb unit 110 moves one conveyance pitch to the downstream side in the conveyance direction, and then moves horizontally (upward in FIG. 1) away from the pallet table 15 to move the comb teeth 111 to each pallet 5. , And then move one transport pitch upstream in the transport direction, and then move horizontally (downward in FIG. 1) approaching the pallet table 15 to move the comb teeth 111
, And each pallet 5 on the pallet table 15 is transported one transport pitch downstream by this one-cycle operation.

Therefore, after each pallet 5 is transported by one transport pitch, the end face of each pallet 5 on the upstream side in the transport direction is in contact with the comb teeth 111, and the stop position of the comb teeth 111 By accurately positioning the
The stop position of each pallet 5 can be accurately determined. At this stop position, the pallet 5 at the predetermined position is held at the terminal insertion position.

On each pallet 5, fixed and movable holders (substrate stoppers in the present invention) 3 and 4 for holding the substrate 1 are provided. FIG. 2 shows an enlarged perspective view of the pallet 5. The pallet 5 has a flat base portion 5
0, a pair of wall portions 51 and 52 erected thereover at a predetermined interval, a pair of guide columns 53 both ends of which are supported by the wall portions 51 and 52, and slidable on the guide columns 53. The holder 3 includes a sliding box 54 held and a coil spring (not shown) wound around the guide column 53 and housed in the sliding box 54. The holder 3 extends a part of the wall 52 upward. The holder 4 extends upward from the upper part of the sliding box 54. In addition, the upper end surfaces of the holders 3 and 4 are cut out at opposing sides to receive the substrate 1.

Therefore, the mounting of the substrate 1 on the pallet 5 by the above-described substrate transfer device 6 is as follows in detail. First, the movable holder 4 is displaced in a direction away from the holder 3 against the spring by a return conveyor or the like of a pallet 5 (not shown), and then the substrate 1 is lowered while being chucked between the holders 3 and 4. Then, the holder 4 is released, and the holder 4 is displaced in the direction of the holder 3 by the spring, whereby the substrate 1 is held between the holders 3 and 4. Next, the chuck of the substrate 1 is released by the substrate transfer device 6 that has chucked the substrate 1. Alternatively, the substrate 1 is lowered while being chucked between the holders 3 and 4, and the substrate 1 is placed on the horizontal surface of the holders 3 and 4, and the substrate 1 is chucked by the substrate transfer device 6 that has chucked the substrate 1. Then, the holder 4 is opened, and the holder 4 is displaced in the direction of the holder 3 by the spring, whereby the substrate 1 is held by the holders 3 and 4. (Conveyance of Terminal Row 2a to Terminal Row Insertion Position) On the other hand, the terminal row 2 that has been formed in advance and wound into a roll is drawn out, and then the terminal row 2a having a length corresponding to the dimensions of the substrate 1 is drawn out. It is cut by the terminal cutting device 7. More specifically, the distal end of the terminal row 2 that has been pulled out is connected to the terminal cutting device 7.
1 and protrudes to the left side of the terminal cutting device 7 in FIG.
“a” vertically holds each terminal at the end of the terminal row 2. Next, the terminal cutting device 7 cuts the end of the terminal row 2 to obtain a cut terminal row 2a.

The terminal row transfer device 10 has an air cylinder 10b which reciprocates the tip 10a in the left-right direction in FIG. A drive unit that opens and closes a pair of claw-shaped tips 10 a is provided at the tip of the piston rod 10 c of the terminal array transfer device 10. The index device 8 includes a rotary table 8a that rotates horizontally, and two terminal insertion devices 9 disposed on the rotary table 8a at positions separated from each other by 180 degrees.

The terminal insertion device 9 includes an air cylinder 9a,
An air cylinder 9a is fixed to the distal end of the piston rod and includes two upper and lower terminal row holding plates 9b which are opened and closed by a drive unit (not shown). Next, the terminal row 2a sandwiched between the claw-shaped tip portions 10a of the terminal row transfer device 10 is inserted into the terminal insertion device 9.
The procedure for transferring the data to is described below.

When the index device 8 is rotated by 90 degrees with respect to the position shown in FIG.
a returns to the left in FIG. 1 across the cut terminal row 2a. Next, the index device 8 is further rotated by 90 degrees,
The two upper and lower terminal row holding plates 9b (only the upper plate is shown in the figure) of the terminal insertion device 9 are positioned above and below the terminal row 2a held by the distal end portion 10a and stopped. Next, the upper and lower terminal row holding plates 9b of the terminal insertion device 9 are
a terminal row 2a is pinched at a portion different from the pinching portion of
Thereafter, the distal end portion 10a releases the pinching of the terminal row 2a, and thereafter, the distal end portion 10a of the terminal row transfer device 10 retreats a little further to the left in FIG. 8 to cause interference between the terminal insertion device 9 and the distal end portion 10a. In this state, the index device 8 is further rotated 90 degrees. In this state, the distal end portion 10a of the terminal array transfer device 10 does not interfere with the index device 8, so the distal end portion 10a of the terminal array transfer device 10 goes to sandwich the terminal array 2a again, and removes the terminal array 2a. It is pinched and returns to the return position (terminal row transfer position). The terminal insertion device 9
Closes the terminal row 2a by closing the upper and lower two terminal row holding plates 9b. (Insertion of Terminal Row 2a into Board 1) Next, the terminal insertion device 9
The operation of inserting the terminal row 2a held between the substrates 1 into the substrate 1 will be described.

In the state shown in FIG. 1, that is, at the position where the operating direction of the air cylinder 9a of the terminal insertion device 9 is orthogonal to the direction of transport of the pallet 5, the air cylinder 9a is connected to the terminal row holding plate 9b.
The terminal row 2a sandwiched between them is moved upward in FIG. At this time, the pallet 5a to receive the terminal row 2a is held adjacent to the terminal row 2a. Next, by moving (inserting) the terminal row holding plate 9b, the terminal row 2 is moved.
The tip of each terminal a is pressed into each terminal connection position on one side (terminal fixed side) of the substrate 1 held by the holders 3 and 4, and is fixed.

Next, the terminal row holding plate 9b of the terminal insertion device 9
Releases the terminal row 2a, and then the air cylinder 9a returns the terminal row holding plate 9b to the original position. (Processing of Substrate 1 with Terminal Row 2a Press-In) In the above-described process, the substrate 1 with the terminal row 2a press-fitted is transported by the subsequent drive of the pallet transport device 11 and transferred onto the conveyor 13, and thereafter , Soldering, collection of pallets, etc., are carried into a device that processes post-processes.

After all, in the apparatus of this embodiment, the position of the substrate 1 is determined by the pallet 5 through the holder 3, and the position of the pallet 5 is determined by the end face of the comb teeth 111 b of the pallet transport device 11 on the downstream side in the transport direction. , High-accuracy positioning is realized. In this embodiment, the terminal row 2a
The substrate holding force between the holders 3 and 4 regulates the displacement of the substrate 1 with respect to the pressure caused by the insertion of the substrate 1.

(Embodiment 2) Another embodiment will be described with reference to FIG. This embodiment is different from the first embodiment in that the board 1 at the terminal insertion position is provided on the side (end face) opposite to the terminal press-fit side of the board 1 in order to prevent the board 1 from retreating when the terminal row 2a is press-fitted. This is to add a backup stopper device (substrate stopper according to the present invention) 16 to be in contact.

The backup stopper device 16 comprises an air cylinder 16a and a stopper plate (substrate stopper according to the present invention) 16c attached to a tip of a piston rod 16b of the air cylinder 16a. The air cylinder 16a retracts the stopper plate 16c in order to prevent interference with the pallet 5 when the pallet 5 is transported, and advances the stopper plate 16c during the pallet 5 transport stop period.
As a result, the front end face of the stopper plate 16c is brought into contact with the end face of the substrate 1 opposite to the end face on the terminal press-fit side. As a result, even if the terminal row 2a is strongly pressed into the substrate 1 by the terminal insertion device 9, the substrate 1 is accurately and easily held. Further, the substrate holding force of the holders 3 and 4 can be reduced.

(Embodiment 3) Another embodiment will be described with reference to FIG. In the first embodiment, the holding force of the holders 3 and 4
In the second embodiment, the terminal row 2
The displacement of the substrate 1 during the press-fitting of a was prevented and the substrate 1 was positioned.

This embodiment is different from the first embodiment in that the substrate 1
The end face 1b on the opposite side to the end face 1f on the side of the terminal press-fitting is brought into contact with stopper faces 35 and 45 provided on the holders 3 and 4, thereby preventing the displacement of the board 1 and the board 1
Perform positioning. In order to bring the end surface 1b of the substrate 1 into contact with the stopper surfaces 35 and 45 provided on the holders 3 and 4,
The pressure when the terminal insertion device 9 presses the terminal row 2a into the substrate 1 is used. That is, the substrate 1 is set at a position where the end surface 1b is slightly away from the stopper surfaces 35 and 45 provided on the holders 3 and 4, and the terminal row 2a by the terminal insertion device 9.
When press-fitting, the substrate 1 is displaced and the end face 1 b is
5 and 45 contact.

In this way, accurate positioning can be achieved with a simple structure, and the holding force of the holders 3 and 4 can be reduced. (Embodiment 4) Another embodiment will be described with reference to FIG. In the third embodiment, the end surface 1b of the substrate 1 is brought into contact with the stopper surfaces 35 and 45 provided on the holders 3 and 4 by utilizing the pressure when the terminal insertion device 9 press-fits the terminal row 2a into the substrate 1.

In this embodiment, after the substrate 1 is held between the holders 3 and 4 (or immediately before), the substrate 1 is pressed in the terminal row press-in direction by the substrate pusher device 18 so that the end surface 1b of the substrate 1 is pressed. With stopper surfaces 35 provided on holders 3 and 4,
It is in contact with 45. The substrate pusher device 18 includes an electromagnetic cylinder 18a and a pressing plate 18c installed at the tip of a piston rod 18b.

During the period when the transportation of the pallet 5 is stopped,
The above-mentioned pressing is performed by operating the electromagnetic cylinder 18a. When the pallet 5 is transported, the pressing plate 1
8c retreats. In this case, the same effect as in the third embodiment can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a first embodiment of a terminal insertion machine according to the present invention.

FIG. 2 is a perspective view of the pallet 5 of FIG.

FIG. 3 is a partially enlarged schematic plan view of a terminal insertion machine according to a second embodiment.

FIG. 4 is a partially enlarged schematic plan view of a terminal insertion machine according to a third embodiment.

FIG. 5 is a partially enlarged schematic plan view of a terminal insertion machine according to a fourth embodiment.

FIG. 6 is a conceptual diagram of a conventional terminal insertion machine.

[Explanation of symbols]

1 is a board | substrate, 2 is a terminal row. 2a is a terminal row after cutting, 3, 4
Denotes a holder (substrate stopper referred to in the present invention).

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takaki Sugiura 1-1-1 Showa-cho, Kariya-shi, Aichi Japan Inside Denso Co., Ltd. (56) References JP-A-59-87847 (JP, A) (58) Survey Field (Int.Cl. ⁷ , DB name) H01L 23/48 H01L 23/50 H05K 13/00

Claims (2)

(57) [Claims] A substrate is carried into a predetermined terminal insertion position, and a substrate stopper for restricting displacement of the substrate is brought into contact with the substrate to hold the substrate at the terminal insertion position.
A terminal row in which individual terminals are formed is inserted toward the board at the terminal insertion position and locked on the board, and the board with the terminal row locked is carried out from the terminal insertion position. Terminal insertion method. 2. The terminal insertion method according to claim 1, wherein the substrate stopper is brought into contact with an end surface of the substrate on a terminal non-insertion side to hold the substrate at the terminal insertion position.