JPH0563917B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a method of forming a wiring device in which different types of wiring devices, such as a plug and a tap, are provided at both ends of a cord.

[Conventional technology]

When the wiring fittings installed at both ends of the cord are different types such as a plug and a tap, conventionally, one end of the cord 1 is first set in the holding frame 2a as shown in FIG. After the cord 1 is sent to the supply section 31 of the molding machine 3a shown in FIG. Molding was carried out by setting the other end of the cord 1 in another holding frame 2b, sending it to the supply section 31 of the molding machine 3b, and molding the plug 5 side.

[Problem to be solved by the invention]

In this case, parts must be transferred between the tap 4 molding process and the plug 5 molding process.
It has become complicated. The present invention has been made in view of the above points, and its purpose is to eliminate the need to transfer parts between the molding processes for each wiring fitting even if the wiring fittings at both ends of the cord are of different types. The purpose of the present invention is to provide a method for molding a wiring device that does not require any wiring.

[Means to solve the problem]

Accordingly, the present invention provides a method for forming a wiring device having plug and tap wiring fittings at both ends of a cord, which comprises setting both ends of the cord in a single holding frame;
On the side that molds the plug as a wiring fitting, insert the plug blade of the plug into the hole on the holding frame side and hold it in the holding frame, and on the side that molds the tap as the wiring fitting, insert the plug blade on the holding frame side into the tap's blade holder. A shaped protrusion is inserted to hold the cord in the holding frame, and the holding frame is fed to a first molding machine to form a wiring fitting, either a plug or a tap, on one end of the cord set in the holding frame. The present invention is characterized in that the holding frame is subsequently supplied to the second molding machine, and the other wiring fitting of the plug or tap is formed on the other end of the cord set in the holding frame. [Function] According to the present invention, in order to continuously supply the cord to the first molding machine and the second molding machine while it is initially set in the holding frame that holds both ends of the cord, the cord is transferred in the middle. It's not necessary. [Example] Hereinafter, an example of the present invention will be described in detail based on the illustrated apparatus.
This figure shows a molding machine 3a and a second molding machine 3b, both molding machines 3a and 3b disposed adjacent to each other.
A connecting rail 34 connecting the two molded parts 30, 30 is provided between them, and a second
The take-out part 32 of the molding machine 3b and the first molding machine 3
A return path 35 is provided which connects the supply section 31 of a. After the cord 31 is set in the supply section 31, it is sent to the molding section 30 of the second molding machine 3b via the molding section 30 of the first molding machine 3a and the connecting rail 34. As shown in FIGS. 3 and 4, the holding frame 2 is sent back to the supply section 31 through the return path 35 after being taken out.
A device that holds both ends at the same time is used. The cord 1 set in the holding frame 2 is connected to a rotating block 5 having a pair of plug blades 51, 51 at one end thereof.
2 is provided in advance, and a container body made of thermosetting synthetic resin with a stopper blade holder at the other end is provided as a primary molding.In the first molding machine 3a, the container body is heated. The tap 4 is formed by covering it with a plastic synthetic resin, and then the second molding machine 3
In b, a cap 50 for rotatably holding the rotary block 52 is molded to form the plug 5. The holding frame 2, which has a rectangular frame shape, has one side that serves as a functional part for holding the rotating block 52 and the vessel provided at both ends of the cord 1, and the other side that is parallel to this one side that holds the middle of the cord 1. The holding part in the functional part serves as the clamp part 20 for clamping, and the holding part in the functional part will be explained first with respect to the rotating block 52 side. The plug blade 51 includes an engaging pin 21 that engages with a hole formed in the blade 51. This engagement pin 2
1 is attached to a slide block 23 which is biased by a spring 22, and is inserted through a hole 29 made on the top surface of the functional part, as shown on the right side of the pair of rotating blocks 52 shown in FIG. When the release member (not shown) moves the slide block 23 backward against the spring 22, the engagement pin 21 comes off the plug blade 51, and if the release member no longer presses the slide block 23, the biasing force of the spring 22 is removed. The engagement pin 21 engages with the plug blade 51 at this point. As shown in FIG.
a movable body 25 which is further slidable with respect to 4 and has a plug blade-like protrusion 26 at its tip, and a movable body 2
5 and a slider 27 for sliding the slider 5. Slider 27 here
is equipped with a cam groove 28 in which a pin 25a protruding from the movable body 25 is slidably engaged, and when the slider 27 is slidably driven, the cam groove 28
Because of the inclination, the movable body 25 slides with respect to the holding frame 2 and the slide core 24. The container is held by projecting the movable body 25 into the holding frame 2 and inserting the blade-like protrusion 26 into the container. Moreover, as shown in FIG. 4, the slide core 24 here has an inclined surface on the other end upper surface side, so that the slide core 24 can be pressed by a drive pin 37 provided on the upper mold in the molding section of the first molding machine 3a. When it is received, it moves toward the vessel body and brings one end of it into close contact with the vessel body. Then tap 4 and plug 5 on both ends of cord 1.
When molding the code 1 to the holding frame 2,
Set both ends of the holding frame 2 as described above.
is supplied from the supply section 31 to the first molding machine 3a, and in the molding section 30 of the molding machine 3a, injection molding is performed to cover the body of one end of the cord 1. Thereafter, the holding frame 2 is supplied to the second molding machine 3b through the connecting rail 34, and a cap 50 that rotatably holds the rotary block 52 is injection molded to form the plug 5. Then, in the take-out portion 32, the engagement pin 21 and the protrusion 2
The plug 5 and the tap 4 are released from the cord 6, and the cord 1, which has the plug 5 formed at one end and the tap 4 formed at the other end, is taken out.

【Effect of the invention】

As described above, in the present invention, in order to continuously supply the cord to the first molding machine and the second molding machine while it is initially set in the holding frame that holds both ends of the cord, the parts are transferred midway. This process does not require a changing process, and since both ends of the cord are held in the same holding frame, the other end of the cord does not get in the way unlike when only one end is held. It does not require a special conveyance jig, and it reduces the number of steps before and after the forming process, saving space and reducing costs. The first molding machine and the second molding machine can be placed on one side of the conveyance path of the holding frame to perform molding while being set in a single holding frame, and the first molding machine and Operating work, machine adjustment, etc. from the side (front) where the second molding machine is not installed
Mold replacement etc. can also be done easily. In addition, both ends of the cord are set in a single holding frame, and on the side where the plug is to be formed as a wiring fitting, the plug blade of the plug is inserted into the hole on the holding frame side and held in the holding frame, and a tap is formed as a wiring fitting. On the side, the plug side and the tap side are held in the holding frame by inserting the plug blade-shaped protrusion on the holding frame side into the plug blade receiver of the tap, so the plug side and the tap side can be securely held in the specified position of the holding frame so that they do not move. When molding plugs and tap wiring fittings by covering them with resin, it is possible to mold them accurately in the specified conditions, and there is no risk of resin adhering to the plug blade or tap blade holder, which improves quality. It is capable of molding good plugs and taps.Furthermore, the holding frame is fed to the first molding machine to mold one of the plugs or taps on one end of the cord, and then to the second molding machine. Since the holding frame is supplied and the other wiring fitting, such as a plug or a tap, is formed on the other end of the cord, even when different wiring fittings such as a plug and a tap are formed on both ends of the cord,
Plugs and taps can be easily molded by sequentially sending the holding frame to the first molding machine and the second molding machine.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view of a device according to an embodiment of the present invention, Fig. 2 is a side view of the device, Fig. 3 is a plan view of a holding frame used in the above, and Fig. 4 is a partial sectional view of the holding frame. , FIG. 5 is a schematic plan view of a conventional device, and FIGS. 6 a and 6 b are schematic plan views of two types of holding frames used in the same, in which 1 is a cord, 2 is a holding frame, and 3 is a schematic plan view of a conventional device.
3a and 3b are molding machines, 4 is a tap, and 5 is a plug.

Claims (1)

[Claims] 1. A method for forming a wiring device with a plug and tap wiring fittings at both ends of the cord, in which both ends of the cord are set in a single holding frame, and the plug blade of the plug is formed on the side where the plug is to be formed as a wiring device. Insert it into the hole on the holding frame side and hold it in the holding frame, and on the side that forms the tap as a wiring tool, insert the tap blade-shaped protrusion on the holding frame side into the tap blade receiver and hold it in the holding frame. The frame is fed to a first molding machine, one of the wiring fittings, a plug or a tap, is formed on one end of the cord set in the holding frame, and then the holding frame is fed to a second forming machine. A method for forming a wiring device, comprising forming the other wiring device, such as a plug or a tap, on the other end side of the cord on which the holding frame is set.