JP2506816B2 - Wire insertion method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inserting a wire rod between wire rod insertion holes formed in an electronic circuit board, and more particularly, to a method of inserting the wire rod into a board so as to intersect with the wire rod or the part. The present invention relates to a method of inserting a wire rod on the top.

2. Description of the Related Art In recent years, the number of electronic components mounted per board area has tended to increase, and the density of patterns has been increasing. As a result, lead wires may cross each other or lead wires and axial parts, etc. Parts are often crossing each other.

Conventionally, in such a case, as shown in FIG. 4, in order to ensure insulation between lead wires and parts that cross each other, a covered conductive wire 42 is used for the lead wire, and the covered conductive wire 42 is made to have a predetermined length. The method of cutting to remove the coating film on both ends, manually inserting the both ends into the wire rod insertion holes 43 formed in the substrate 41, and wire-wrapping and fixing the ends of the inserted conductive wire is applied. It was being done. In FIG. 4, 44 is a wire rod inserted by an ordinary insertion device, and 45 is an axial part.

On the other hand, the present applicant previously disclosed in JP-A-53-138067 a wire rod insertion device that cuts a predetermined amount of a coated conductive wire, bends both ends of the coated conductive wire, and simultaneously removes the coating film and automatically inserts it. Proposed.

The problem to be solved by the invention is that it is difficult to quickly insert a large amount of wire rod with the above-mentioned manual insertion method, the efficiency is extremely low, and the coated conductor wire 42 is inserted as shown in the figure for manual insertion.
There is a risk that it will become long and float up, and there was a problem in terms of quality.

On the other hand, if the wire rod insertion device disclosed in Japanese Patent Laid-Open No. 53-138067 is used, the coated wire can be used for automatic insertion, and the above problem can be solved. However, in addition to an automatic insertion device that inserts a lead wire of a normal bare conductor into the substrate, an insertion device dedicated to the covered conductor is required for the cross wiring, which causes a problem that the equipment cost increases. Further, there is also a problem in terms of productivity because a step of transferring the substrate and setting it in another insertion device is also required.

In view of the above-mentioned conventional problems, it is an object of the present invention to provide a wire rod insertion method capable of automatically and efficiently inserting a wire rod that intersects an inserted cotton material or component.

Means for Solving the Problems The present invention, in order to achieve the above-mentioned object, prior to the insertion of a wire rod that crosses a wire rod or a component inserted in a substrate, the wire rod to be inserted in the wire rod or the component It is characterized in that an insulating material is attached onto the crossing portion, and the crossing wire is inserted through the insulating material.

Action Since the present invention has the above configuration, a wire to be inserted,
Since the wire rod or part that crosses this is insulated from each other through the insulating material attached on the crossing portion, a bare wire rod can be used as the wire rod, and the wire rod can be inserted using all normal wire rod insertion devices. Can be done using.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

The basic operation will be described with reference to FIG. 1. First, as shown in FIG. 1 (a), a bare wire rod is formed between a pair of wire rod insertion holes 2 a and 2 b to be connected to each other by a known automatic wire rod insertion device. Insert the wire rod 3 consisting of. The automatic wire rod insertion device
After cutting the wire rod 3 to a required length and bending both ends thereof, the bent both ends are inserted into the wire rod insertion holes 2a and 2b, and further, the anvil is disposed below the substrate 1 so as to face the insertion head. The operation of bending and fixing the portions protruding from the wire insertion holes 2a and 2b inward is automatically performed.

Next, as shown in FIG. 1 (b), an insulating material 4 having an adhesive property or an adhesive agent having an insulating property is applied onto the inserted wire 3 and is blown with hot air or irradiated with heat rays. The insulating material 4 is hardened by irradiating light rays such as ultraviolet rays or ultraviolet rays, and the insulating material 4 is attached. The insulating material 4 is attached to a pair of wire rod insertion holes 5a located on both sides of the wire rod 3,
It is a position where the line connecting 5b and the wire 3 intersect.

As the insulating material 4, it is preferable to use a material that has a high insulating property and can secure a thickness enough to obtain a required insulating performance and that is quickly cured.

Further, the application of the insulating material 4 can be performed at the same station as the wire rod insertion by using a dispenser provided in the automatic wire rod insertion device, but a plurality of substrates are sequentially moved to insert the wire rods and parts. It may be performed at another station provided between the insertion stations.

Thereafter, as shown in FIG. 1 (c), a bare wire is formed between the wire rod insertion holes 5a and 5b by the wire rod insertion device or a similar wire rod insertion device of another station so as to cross the wire rod 3. Insert the wire rod 6. At that time, since the insulating material 4 is interposed between the wire rods 3 and 6 at the crossing portion, the insulation between them is ensured. Further, since the wire rod 6 is inserted by the insertion device, it does not loosen and does not rise.

 Next, a specific example will be described with reference to FIG.

FIG. 2 shows the main part of the wire rod insertion device, 11 is the substrate 1 X
X- which supports so that it can move and position in the Y and Y directions
It is a Y table from the supply conveyor (not shown) to the substrate 1
Is received, and the substrate 1 into which the wire is inserted is taken out by a discharge conveyor (not shown). This XY
In the information of the table 11, the insertion head 13 is arranged, and the wire rod supply unit 14 in which the wire rod 15 is wound around the reel 14a is arranged on the side of the insertion head 13 and is supported by the support columns 12, respectively.

The insertion head 13 is provided with an elevating member 16 which can be moved up and down by a swing arm 17, and at the lower part thereof, both ends of the wire 15 are bent downward and cut into a predetermined length as the elevating member 16 moves up and down. To form wires 3 and 6 for insertion,
An insertion unit 18 to be inserted into the wire rod insertion holes 2a, 2b, 5a, 5b formed in the substrate 1 is mounted.

A wire rod feeding unit 20 for processing the wire rod 15 supplied from the wire rod feeding unit 14 through a tension device 19 or the like into a linear shape and sending the wire rod 15 to the insertion unit 18 by a predetermined length is attached to a side portion of the insertion unit 18. ing.

An anvil 21 which can be moved up and down between a position abutting or close to the lower surface of the substrate 1 and a lowered position by a not-shown raising and lowering drive unit is disposed below the substrate 1 just below the insertion unit 18. Then, as the wire rods 2 and 6 are inserted, the ends of the wire rods 3 and 6 which penetrate the wire rod insertion holes 2a, 2b, 5a and 5b and project from the lower surface of the substrate 1 are bent inward by the anvil 21. Is configured.

The insertion unit 18 and the anvil 21 are configured to be rotatable about their axes, and the insertion direction can be arbitrarily selected.

Insulating material coating means 22 for coating the insulating material on the substrate 1 is disposed on the side of the insertion unit 18 while being supported by the support column 12. Further, although not shown, a means for irradiating ultraviolet rays or heat rays or a means for blowing hot air for curing the insulating material 4 applied on the substrate is also provided.

Next, the wire rod inserting operation will be described. The XY table 11
Wire rod insertion hole 2 of substrate 1 into which wire rod 3 is to be inserted
Position a and 2b opposite to the insertion unit 18, then lower the elevating member 16 by the swing arm 17, and the wire rod feeding unit 20 feeds the insertion unit 18 for a predetermined length and bends both ends downward. Both ends of the wire rod 3 thus formed are inserted into the wire rod insertion holes 2a and 2b. At that time, the anvil 21 rises to come into contact with or come close to the substrate 1, and the end portion of the wire rod 3 protruding from the substrate 1 is bent inward to fix the wire rod 3.

Thus, when the insertion of the wire 3 is completed, the insertion unit
When the wire rod 6 that crosses the inserted wire rod 3 is inserted, the XY table 11 is actuated to move these wire rods 2 and 6 together.
The crossing portion of the above is positioned so as to face the insulating material applying means 22, the insulating material 4 is applied, and the curing means is operated if necessary. Further, if there is a wire rod insertion portion similar to the wire rod 3 on the substrate 1, the same insertion operation is repeated.

Next, the insertion unit 18 is rotated by 90 ° to change the insertion direction of the wire and the XY table 11 is operated,
The wire rod insertion holes 5a and 5b of the wire rod 6 to be inserted by intersecting the wire rod 3 are positioned to face the insertion unit 18, and the wire rod 6 is inserted in the same manner as the wire rod 3.

Thus, the wire rod 3 and the wire rod 6 crossing the wire rod 3 can be inserted with the insulating material 4 interposed therebetween by a series of insertion operations.

In the above embodiment, the example in which the wire rod 6 that intersects with the single wire rod 3 is inserted has been shown, but a wire rod that intersects with a plurality of wire rods can be inserted in the same manner. Further, in the above-mentioned embodiment, the insulating material 4 is exemplified by an insulating material which has adhesiveness and can be hardened after coating. However, as shown in FIG.
The insulating tape 24 may be attached to the intersection of the wire 3 and the wire 6 may be inserted so as to pass over the insulating tape 24. Further, FIG. 3 (a) shows an example in which the wire rod 6 is inserted by intersecting with the plurality of wire rods 3, but the present invention is not limited to such a manner in which the wire rods 3 and 6 are crossed each other. As shown in (b), it is also applicable to the case where the wire rod 6 is inserted while intersecting with the axial component 25 and the like. Further, as the method of attaching the insulating material, any means such as applying the insulating material 4 or sticking the insulating tape 24, or sticking an insulating material such as a rubber piece can be applied.

EFFECTS OF THE INVENTION According to the wire rod insertion method of the present invention, the wire rod to be inserted as described above and the wire rods or parts that intersect the wire rods are attached to the intersections and insulated from each other through the insulating material. Therefore, a bare wire can be used as the wire, and the wire can be inserted by making use of a normal automatic insertion device. Therefore, the wire rod can be efficiently inserted at low cost,
It is possible to achieve high density of circuit boards at low cost.
Great effect.

[Brief description of drawings]

FIG. 1 is a perspective view showing a wire rod insertion process of an embodiment of the present invention, FIG. 2 is a perspective view of a main portion of a wire rod insertion apparatus for carrying out the method of the present invention, and FIGS. 3 (a) and 3 (b) are FIG. 4 is a perspective view of a modified example of the present invention, and FIG. 4 is a perspective view of a conventional example in which a wire rod is inserted. 1 ... Substrate 2a, 2b ... Wire rod insertion hole 3 ... Wire rod 4 ... Insulation material 5a, 5b ... Wire rod insertion hole 6 ... Wire rod 24 ... Insulating tape

Claims (1)

(57) [Claims] 1. When inserting a wire rod intersecting with a wire rod or part inserted in a substrate, an insulating material is attached to the crossing portion of the wire rod or part with the wire rod to be inserted prior to the insertion, and the insulation A wire rod insertion method, characterized in that the intersecting wire rods are inserted through a wire rod.