JPH01151229A - Manufacture of hooking part at lead wire of radial-lead type electronic component - Google Patents

Abstract

PURPOSE:To continuously shape a straight lead according to a need by a method wherein, after two lead wires have been sandwiched and pressed one after another and partially between one pair of rotary materials and have been projected nearly perpendicularly to a taped plane, individual projected parts are twisted continuously in a desired direction. CONSTITUTION:Many pieces of taped capacitors A are transferred between one pair of rotary materials 4, i.e. rotary materials 4a and 4b, which are arranged side by side at prescribed intervals (with a gap capable of passing a lead wire). Lead wires 2 are transferred always continuously without intermittent movement; when they are passed between one pair of rotary materials 4a, 4b, they are first projected perpendicularly to a transfer direction by means of a protruding part and a recessed part 5, 6 which are installed at the materials. Then, while a twisting mechanism 8 catches projected parts 7 of the lead wires 2 at a speed equal to a shift of a taping mount 3, it presses and twists the projected parts 7 in a prescribed direction. By this setup, the lead wires can be shaped continuously, and working efficiency can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention deforms the lead wires of a radial lead type electronic component such as a taped capacitor so that the electronic component can be placed at an appropriate height on a printed wiring board. The present invention relates to a method of forming a locking portion for attaching and holding the present invention to a device.

(Prior Art) As is well known, when a radial lead type capacitor is inserted into a printed wiring board, in order to fix the capacitor body at an appropriate height, a predetermined portion of the lead wire is deformed to form a locking portion. It has been traditionally done to create. General forms of this locking portion include those shown in FIGS. 7 and 8, for example.

In the figure, a is the capacitor body, b is the lead wire, and C is the printed wiring board. Conventionally, before the taping process, the capacitor itself is attached to the predetermined position of the lead wire using a jig such as a die. The so-called 7 ohm forming the stop part d was taped. On the other hand, there is also one that is taped with a straight lead, and is used as a finished product with a straight lead type without 7-ohm lead.

(Problems with the conventional technology) However, as the density of mounting on printed wiring boards C has progressed recently, there has been a demand for electronic components that have heights and lead pitches that match that. ing. For example, it is often necessary to change the original lead pitch after taping the lead wire into a straight lead shape. It was thought that it would be difficult to achieve 7 ohms because the tip side of the wire was adhesively held by tape. Therefore, it was necessary to use new taping with 7 ohms.

(Means for Solving the Problem) The present invention makes it possible to process a product that has been manufactured as a straight lead type into a 7-ohm lead type as required, and allows taping products to be continuously conveyed. This is to create a locking part while doing so.

Therefore, it can be used with or without 7 ohms, and,
The purpose of this invention is to provide a method that has excellent workability because it uses a continuous conveyance means, and allows the lead wires of radial lead type electronic components to be freely formed into 7 ohms at a predetermined lead pitch in terms of design and mounting. It is something.

In order to achieve the above object, the present invention, as shown in the block diagram of FIG. It is characterized in that after the first part is partially clamped and made to protrude at a substantially right angle to the taping surface, each protruding part is continuously twisted outward or inward or in the same direction using a twisting mechanism.

(Function) By configuring as described above, the lead wire of the taped electronic component does not operate intermittently (when it is constantly conveyed and passes between a pair of rotating members, First, due to the uneven parts provided on the rotating member,
Projected at right angles to the transport direction. Next, the torsion mechanism engages the protrusion of the lead wire at the same speed as the movement of the taping mount, presses the protrusion in a predetermined direction, and twists it, making it possible to continuously 7 ohm the lead wire. , work efficiency is also improved.

Embodiments of the present invention will be described below with reference to FIGS. 2 to 6.

Embodiment: 1 FIGS. 2 to 4 show a first embodiment. In the figures, 1 is a capacitor body, 2 is a lead wire, and 3 is a taping mount. The capacitor (film capacitor) A itself, which consists of these components, has the same structure as the conventional one, and the manufacturing process is the same up to the taping process, so other characteristic parts will be explained here. explain in detail.

First, as shown in FIG. 2, a pair of rotating members 4 are arranged side by side with a predetermined interval (enough for a lead wire to pass through), that is, one rotating member 4a has a concave groove 5 on its circumferential surface. ,
A large number of taped capacitors A are conveyed between the rotating member 4b and the other rotating member 4b, which also has a convex portion 6 on the circumferential side. In this case, since the groove 5 and the convex portion 6 are provided with a gap large enough to allow the lead wire 2 to pass through,
- When the wire 2 passes, the groove 5 and the convex portion 6 form a protruding portion 7 in a direction perpendicular to the traveling direction (arrow x direction). Note that at this time, the rotating direction of the rotating member 4 is rotated in the direction shown by the arrow. Further, in order to allow the lead wire 2 to pass between the rotating members 4a and 4b more smoothly, it is preferable to hold the capacitor body 1. After forming such a protruding portion 7, the process proceeds to the twisting step shown in FIG. In this case, the protruding parts 7 are automatically fed into the twisting mechanism 8 one after the other. This twisting machine! Ft8
moves continuously in an endless track manner, and the taping mount 3
A large number of suppressors 10 are attached to the endless track 9 so that the spacing is equal to the spacing between the capacitors A attached to the endless track 9. These suppressors 10 are arranged in a track frame 11
It has a structure in which it can move up and down or back and forth within a predetermined range, and has a claw 12 at its tip head that has an inclined part on the inside so that it can be engaged with the protruding part 7 of the lead wire 2. A pair of each are provided. This nail 12
As the suppressor 10 slides on the inclined table 13 and is pushed up, the protruding part 7 slides on the inclined part of the pawl 12 and at the same time is held by the entire head of the suppressor 10, whereby the protruding part 7 is twisted.

At this time, a holding member 14 is provided on the opposite side of the suppressor 10 with the lead wire 2 in between, and even if a predetermined pressure is applied to the lead wire 2 (2) by the suppressor 10, this holding member 14 The receivers can be fixed and twisted with a predetermined strength.In addition, these many pressers 10 are attached to the taping mount 3.
It always matches the speed of the robot and circulates on an endless orbit.

Embodiment 2 In the embodiment $1 above, the case where the lead wire 2 is twisted is directed inward, but in the embodiment @2, the case is explained in which the twist direction is directed outward. In this case, the method of forming the protruding portion 7 is the same as in the first embodiment. The difference lies in the structure of the tip head of the presser 10 in the continuously moving twisting mechanism 8. That is, $5
As shown in the figure, the chevron-shaped claws 15 inserted between the protruding parts 7 of the lead wire 2 push out both protruding parts 7 at the same time, and then press the flat part of the tip head to spread the protruding parts 7. can be turned completely outward. In this case as well, as in the first embodiment, the locking portion can be engaged with and separated from the lead wire 2 while circulating on the endless track, thereby continuously forming a locking portion.

Example: 3 Recently, as packaging density increases, there is a risk that the lead wires will come into contact with each other if the locking parts are turned inward or outward due to wiring space, so it is very effective to orient them in the same direction. There is also. FIG. 6 shows how it is formed;
The formation of the protruding portions 7 is the same as in each of the above embodiments, but when twisting, the protruding portions 7 can be twisted in the same direction by simply using the rollers 16. In other words, the lead wire 2 protrudes perpendicularly to the direction of movement of the taping mount 3.
The protruding portion 7 is twisted in one direction while being pressed as the roller 16 rotates. The locking portion can be formed by such means.

In addition, in the above embodiment, the pusher 1 is
0 was changed, but if the shape of the pawl or the like is made variable so that it can be switched, the direction of the locking portion 10 can be set to the inside or outside, or the same direction, without changing the presser 10 each time. However, it is also possible to use something other than the endless track 9 or the rollers 16 in each embodiment, and for example, a claw or the like may be provided on the circumferential surface of the rotating body in place of the presser. Furthermore, although the above embodiments have been described with respect to capacitors, the present invention is not limited to this and can also be applied to radial lead type general electronic components.

(Effects of the Present Invention) As described above, the present invention has the advantage that the protruding portions formed by once pressing the two lead wires of a large number of radial straight lead electronic components fixed to a taping mount with a rotating member are moved outward. Or, since the locking part is formed by twisting freely and continuously inward or in the same direction, the design
7-ohm lead suitable for high-density mounting. In the present invention, straight lead parts can be used as taped products as they are after taping, or the lead pitch can be freely selected by continuously applying 7 ohms to create a locking part. This is a useful technology that has made it possible to respond to implementation.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the outline of the configuration of the present invention, Fig. 2 is a perspective view showing a method of forming a protrusion on the lead wire of each embodiment of the present invention, and Fig. #IJ3 is a torsion diagram of the first embodiment. A plan view showing the method, FIG. 4 is an enlarged perspective view of the presser of the first embodiment, FIG. 5 is a perspective view of the presser of the second embodiment, and FIG. 6 is a torsion diagram of the $3 embodiment. A plan view showing the method, and FIGS. 7 and 8 are side views of an electronic component in which a locking portion is formed by a conventional method and is mounted on a printed wiring board. In the figures, 1 is a capacitor body, 2 is a Lead wire, 3 is a taping mount, 4 is a rotating member, 5 is a groove, 6 is a convex portion, 7 is a protruding portion, 8 is a twisting mechanism, 9 is an endless track, 10 is a presser, 11
12 is a track frame, 12 is a pawl, 13 is a ramp, 14 is a holding member, 15 is a pawl, and 16 is a roller. First page

Claims (3)

[Claims] (1) In a taped product of a large number of radial type straight lead electronic components, each two lead wires are successively partially clamped between a pair of rotating members to protrude approximately at right angles to the taping surface, and then A method for making a locking part in a lead wire of a radial lead type electronic component, characterized in that the protruding parts of the radial lead type electronic component are continuously twisted outwardly or inwardly or in the same direction using a twisting mechanism. (2) A radial lead type electronic component according to claim 1, wherein a concave groove is provided on the circumferential side of one rotating member, and a convex portion is provided on the circumferential side of the other rotating member. How to make a locking part on the lead wire. (3) The torsion mechanism consists of a large number of radial lead electronic components that circulate and press the protruding portion of the lead wire approximately 90 degrees in a predetermined direction while moving on an endless track at the same speed as the radial lead type electronic component being transported. A method for making a locking portion in a lead wire of a radial lead type electronic component according to claim 1, which is provided with a presser.