JPS6314820B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention involves sequentially feeding two strips in which a large number of terminal fittings are connected so that they almost overlap each other at a predetermined position, and removing the terminal fittings at the predetermined position. The present invention relates to a method for sequentially supplying the connecting terminal fittings to insertion components.

(b) Background of the technology In the mass production of circuit components such as multi-connectors in which multiple terminal fittings are inserted into an insulating mold body (terminal fitting insertion parts), one end of each of the many terminal fittings is connected to a connecting member. The method of forming a strip by press working means and inserting the terminal fitting into the molded body is already in practical use because it has the advantage of automating the assembly work and having high productivity. To insert the terminal fitting into the mold body, there are two methods: insert the connecting terminal fitting into the mold body and then cut the connecting part of the terminal metal fitting, and two methods: cutting the connecting part and cutting the terminal fitting into individual pieces. There is a method of inserting the terminal into the body.The former method requires more complicated equipment than the latter method, but is advantageous because it is superior in productivity. However, it is difficult to apply due to the shape of the terminal fitting and the insertion interval be.

(c) Prior Art and Problems Figure 1 shows an enlarged plan view (a) and a side sectional view (b) of a part of a strip formed by connecting one end of a large number of press-contact terminal fittings to a connecting member, and Figure 2 shows an enlarged side sectional view (b). FIG. 2 is an enlarged side view (A) and a partial plan view (B) of a connector in which a plurality of terminal fittings are inserted in two rows facing each other and viewed from the width direction.

In FIG. 1, a strip 1 formed by pressing a phosphor bronze plate is made up of a pressure contact terminal fitting 2 and a connecting member 3. The terminal fitting 2 has an intermediate portion 3 bent at 90 degrees.
Pressure welding section 4 and lead section 5 that connect wire rods by pressure welding means
and an insertion part 6 which is inserted into the mold body, the pressure contact part 4 is formed with a slit 7 for pressure contact of wire material, and the insertion part 6 is formed with protrusions 8 to 10 for insertion. On the other hand, a feed hole 11 is formed in the connecting member 3, and a linear notch 12 is cut in the connecting portion between the connecting member 3 and the terminal fitting 2 to facilitate their separation.

In the strip 1 configured in this way, the terminal fitting connection pitch P1 has a minimum value of the expansion width of the insertion part 6 plus the dimensions required for processing, and the bending corner of the insertion part 6 has a A slight bulge 13 occurs.

In FIG. 2, which shows a connector with terminal fittings 2 inserted therein, the connector 21 is constructed by inserting a plurality of terminal fittings 2 in two rows into an insulating molded body 22 formed by molding plastic. However, in the row of terminal fittings in the direction of arrow A and the row of terminal fittings in the direction of arrow B shown in FIG. Things in column (column A) and arrow B
The items in the direction row (row B) are arranged substantially in the direction perpendicular to the direction of the row. The terminal fitting insertion pitch _P2 in the same row is generally 2.54 mm (or 2.50 mm), which is the basic grid size of a printed wiring board.

Therefore, the insertion pitch _P2 is smaller than the connection pitch _P1 , and the conventional method of inserting the terminal fittings 2 into the molded body 22 in a connected state as shown in FIG. The length direction of the strip 1 with the connecting pitch P ₁ aligned with the parallel pitch is perpendicular to the terminal fitting insertion row, and the terminal fittings 2 are simultaneously placed at the same position on each mold body 22. The method was to insert it. In order to improve the work efficiency of the insertion,
As shown by the dotted chain line, when trying to stack two strips back to back and insert them one by one in rows A and B at the same time, the bulge 13 of the insertion part 6 shown in FIG. 1 interferes with the back-to-back arrangement. It was hot.

(d) Object of the invention The object of the invention is to provide a method for supplying connecting terminal fittings that eliminates the above-mentioned drawbacks.

(e) Structure of the Invention The above object is to sequentially feed two strips in which one end of a large number of terminal fittings is connected to a connecting member so that they almost overlap at a predetermined position, and to connect the terminal fittings at the predetermined position. After simultaneously inserting the terminal fittings of both strips into the respective through-holes of the insertion part, when cutting the connecting portion between the terminal fittings and the connecting member to create a connector, etc., at the predetermined position. The two substantially parallel strips are inclined at an appropriate angle in the width direction so that the connecting members are almost in contact with each other, and the ends of the two inclined strips on the insertion side of the connecting terminal fitting are connected to the terminal fitting insertion part. This is achieved by a method for supplying connecting terminal fittings, which is characterized in that at least one of the strips is fed in a tilted direction relative to the other strip by an inclined guide so as to face each of the predetermined through holes.

(f) Examples of the invention The method of the present invention will be explained below using the drawings.

3 is a schematic plan view of an apparatus according to an embodiment in which the method of the present invention is applied to the production of the connector shown in FIG. 2, FIG. FIG. 4 and FIG. 5 are enlarged views having the same size as FIG. 2, and the same reference numerals are used for the same parts in each figure as in the previous figure.

In FIG. 3, a device 31 includes a head 32 for inserting a connecting terminal fitting into a mold body, a pair of inclined guide rollers 33 for progressively feeding strips, and a pair of upright guide rollers 34 for sequentially feeding strips. and a table 35 for fixing the mold body. A table 35 on which a plurality of mold bodies 22 (10 in the figure) are fixed in parallel is movable in the front-rear direction (in the direction of arrow C) and in the vertical direction (in the direction of the thickness of the paper), and has a head above it. 32 is facing. The strips 1 and 1' (not shown) of terminal fittings are stretched around the pair of guide rollers 33 and 34, respectively, and are stretched without slack so as to be parallel to each other between the head 32 and the mold body 22. The strips 1 and 1' are fed intermittently in the directions of arrows D and E with their connecting members facing upward. Note that the strip 1' is the same as the strip 1, placed back to back, that is, as shown in FIG. 4 and FIG. ′
The press-contact parts 4 and 4' of the strips 1 and 1' are aligned so as to protrude outward from the overlap, and the terminal fitting connecting pitches of the strips 1 and 1' are formed in the same manner as the parallel pitches of the molded body 22. In addition, each mode body 22 has two rows (row A and row B) of through holes 36 for inserting a plurality of terminal metal fittings.
(columns) are drilled in a staggered arrangement.

In FIG. 4, which shows a state in the middle of the process of sequentially inserting terminal fittings from one side of the mold body 22, the strip 1 guided by the inclined guide roller and the strip 1' guided by the upright guide roller are connected to each other as connecting members. The upper ends of the lead parts 5 and 5' of the connecting terminal fittings 2 and 2' are in contact with each other, and the lower ends of the lead parts 5 and 5' of the connecting terminal fittings 2 and 2' are perforated in different rows (rows A and B in FIG. 2) of the molded body 22. They come to face the through holes 36 which are diagonally opposed to each other. After the table 35 is moved upward and the terminal fittings 2 and 2' are respectively inserted into the pair of through holes 36, the terminal fittings 2 and 2' are connected to the connecting member 3 and Separate from 3' and attach it to table 3.
Move 5 down. Next, the table 35 is advanced by one pitch in the direction in which the through holes 36 are arranged, and the mold body 2 is then moved forward by repeating the above operation.
A separated terminal fitting 2 or 2' is inserted into each through hole 36 of 2.

However, as shown in FIG. 4, the insertion is in a state in which the terminal fittings 2 and 2' are slightly floating in the through hole 36, and the complete insertion (insertion) as shown in FIG. Similar to the wearing method, this is carried out using a separate device. Further, the head 32 is formed with a rectangular cross-sectional groove 37 passing through the lower surface in the longitudinal direction, and the upper portions of the strips 1 and 1' fit into the groove 37. The bottom surface 37' of the groove 37 becomes a surface that receives the insertion force when the upper end surfaces of the strips 1 and 1' come into contact with each other during the insertion, and the width of the groove 37 corresponds to the width of the terminal fitting 2 inserted into the mold body through hole 36.
The dimensions are such that there is enough room for the hole 36 to change from an inclined position to an upright position in the longitudinal direction of the through hole 36.

In FIG. 5, the guide roller 34, which is supported and rotatable in an upright direction, is tilted by an appropriate amount, and the length of the cylindrical surface of the rollers 33 and 34 is The dimensions are such that the pressure contact parts 4 and 4' of the connecting terminal fittings 2 and 2' do not touch each other. Therefore, the strips 1 and 1' running along the cylindrical surfaces of the rollers 33 and 34 almost touch each other near their upper ends, while their lower ends (terminal fittings 2 and 2'
The leading ends of the lead portions are opposed to the through holes of the mold body into which they are inserted, as described with reference to FIG.

(g) Effects of the Invention As explained above, according to the method of the present invention, two strips to which a large number of terminal fittings are connected are run in parallel, and each strip is quickly connected to relatively adjacent through holes. It became possible to simultaneously insert terminal fittings that were Therefore, not only is the work efficiency of insertion, which was conventionally used one by one, doubled, but also terminal fittings of the same shape can be inserted in two different orientations, as explained in the embodiment. In order to align the lead parts of the terminal, two insertion heads were required in the past, but according to the present invention, only one head is required, which has the effect of simplifying the structure of the terminal fitting insertion device. is big.

[Brief explanation of the drawing]

Fig. 1 is an enlarged plan view (a) and side sectional view (b) of a part of the strip material in which a large number of press-contact terminal fittings are connected and formed, and Fig. 2 is a side view of the connector viewed from the width direction into which the terminal fittings are inserted. Figure A and a partial plan view B, Figure 3 are schematic plan views of an apparatus according to an embodiment in which the method of the present invention is applied to the production of the connector, Figure 4 is a cross-sectional view along the line -' of Figure 3, and Figure 5 The figure is a sectional view taken along the line -' of FIG. In the figure, 1 and 1' are strip members, 2 and 2' are pressure contact terminal fittings, 3 and 3' are connecting members, 21 is a connector,
22 is a molded body, 31 is a terminal fitting insertion device, 3
2 is a terminal fitting insertion head, 33 is an inclined guide roller, 34 is an upright guide roller, 35 is a movable table, and 36 is a through hole for inserting a terminal fitting.

Claims (1)

[Claims] 1. Sequentially feed two strips in which one end of a large number of terminal fittings is connected to a connecting member so that they almost overlap at a predetermined position, and insert both strips into each through hole of the terminal fitting insertion part at the predetermined position. When the terminal fittings of the strips are inserted in sequence at the same time, and then the connection between the terminal fittings and the connecting member is cut to create a connector, etc., the two strips that are almost parallel at the predetermined positions are The connecting members are almost in contact with each other and are inclined at an appropriate angle to face each other in the width direction, so that the ends of the two inclined strips on the insertion side of the connecting terminal fittings are respectively opposed to the predetermined through holes of the terminal fitting insertion parts. A method for supplying connecting terminal fittings, characterized in that at least one of the strips is fed in a diagonal direction relative to the other strip using an inclined guide.