JPH057094B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a stranded wire forming device used to create a stranded wire by combining a plurality of relatively short electric wires, such as wiring in a control device. Regarding.

(Prior art) It is known that when a current is passed through the wiring of electric wires, a magnetic field is generated, which causes various electrical disturbances to other electric wires, etc. It has been found that it is better to wire multiple wires by twisting them together instead of wiring them in parallel.

Conventionally, in wiring inside control equipment, the diameter
Multiple wires of 0.8mm to 2.0mm are often wired together. In addition, in such wiring,
The length of the electric wire is often relatively short, ranging from several meters to several tens of meters, and the type of electric wire also varies depending on the control device.

For this reason, the stranded wires wired in such devices are manufactured manually by, for example, fixing one end of the wire, attaching the other end to the tip of a tool such as a drill, and then twisting the wire. No machines are known for making strands of wire, especially for wiring in such devices.

(Problems to be Solved by the Invention) For this reason, the work of creating and wiring stranded wires has become a very time-consuming work.

Even when using tools such as a drill, it is difficult to twist the wires at once to create a stranded wire if the wire is close to 10 meters long, so it is difficult to twist the wires at once to create a stranded wire. The work is troublesome, and in order to make stranded wires, the individual wires are first twisted, and then the wires are bundled together and further twisted. It was difficult to adjust the twist so that the twist was constant, and this caused problems such as uneven twist.

The present invention was developed in view of the above circumstances, and requires relatively short wires, such as wiring in a control device, and multiple types of twisted wires made by twisting wires with different diameters depending on the device. It is an object of the present invention to provide a stranded wire forming device that is compact enough to efficiently produce stranded wires and to be easily transported and installed at the site where wiring work is performed.

(Means for solving the problem) That is, the stranded wire forming device according to the present invention has the following features:
``It has a mounting shaft for a drawer reel wrapped with electric wire,
A guide including a plurality of rotary tables pivotally supported by a rotating shaft provided perpendicularly to the mounting axis of the draw-out reel, and a guide tube that converges the plurality of electric wires pulled out from each draw-out reel. A feeding means including a roller that feeds out the plurality of electric wires guided in the guide cylinder while sandwiching them, and a take-up reel for winding the plurality of electric wires sent out, and the winding reel and the feeding means are installed. a frame body in which the means and the guide tube are integrally assembled and rotates around the guide tube;
It is characterized by twisting the wires pulled out from the draw-out reel individually and then twisting the twisted wires together.

(Function ₎ The operating state of the stranded wire forming device according to the present invention will be explained using a specific _example shown in the figure _{. 2} is fitted onto the mounting shaft 2 of the rotary table 1 provided at the lower stage of the device 100, and is mounted in such a manner that the electric wires C ₁ and C ₂ can be drawn out freely. The rotary table 1 is rotated by a rotary shaft 3 provided perpendicularly to the mounting shaft 2, and the electric wires C ₁ and C ₂ drawn out
Each piece is twisted.

Next, the plurality of electric wires C _{1 ,} C ₂ pulled out from each pull-out reel R 1 , R ₂ are guided to the upper stage of the device 100 by a guide means including a guide tube 7 .

At the upper stage of the device 100, there is provided a frame 8 in which a take-up reel R, a feeding means including rollers 9, and a guide tube 7 are assembled together and rotates around the guide tube 7. A roller 9 provided on this frame 8
The feeding means is equipped with a plurality of electric wires guided in the guide tube 7, that is, the twisted electric wires _C1 and _C2 drawn out from the draw-out reels _R1 and _R2 , while being held therein. It's starting to be sent out. Here, since the frame 8 rotates, the electric wires C ₁ and C ₂ held by the feeding means are further twisted and twisted together before the roller 9.

As a result, a stranded wire is created by combining a plurality of wires. Note that the reason for twisting each electric wire when drawing it out and further twisting it when combining a plurality of electric wires is to prevent the finished twisted wires from untwisting. The completed stranded wire C is wound onto a take-up reel R.

(Example) Next, an example of the stranded wire forming apparatus according to the present invention shown in FIGS. 1 to 5 will be described.

This stranded wire forming device 100 is composed of two stages, an upper stage and a lower stage, and draw-out reels R ₁ and R ₂ are set in the lower stage of the device 100, and the twisted wires C are set in the upper stage of the device 100. It's starting to wind up. In the figure, reference numeral 1 denotes a rotary table on which reels R ₁ and R ₂ for withdrawal are mounted.
A plurality of rotary tables 1 are provided depending on the number of electric wires C ₁ and C ₂ to be twisted together.

This rotary table 1 is formed into an angled shape, and a mounting shaft 2 for the draw-out reels R ₁ and R ₂ is provided at one end thereof. The drawer reels R ₁ and R ₂ are attached to this mounting shaft 2.
The wires C ₁ and C ₂ can be freely drawn out.

This rotary table 1 has a structure in which it is pivotally supported on a rotating shaft 3, and a drawer reel attached to a mounting shaft 2.
It is designed to rotate together with R ₁ and R ₂ . The rotating shaft 3 is provided in a direction perpendicular to the mounting shaft 2 of the rotating table 1.

Therefore, for drawer reels R ₁ and R ₂ ,
Rotation about the mounting shaft 2 when the electric wires C ₁ and C ₂ are pulled out and rotation about the rotation shaft 3 due to the rotation of the rotary table 1 are applied.

A gear groove is provided at the lower end of the rotating shaft 3.
The driving force of the motor M ₁ is transmitted by a belt 4 that is stretched between this and the drive shaft of the motor M ₁ .

In this example, as shown in FIG. 3, the drive shaft 5 of the motor M ₁ and the rotation shaft 3 are connected by a series of belts 4, and the reels R ₁ and R ₂ for extraction are attached to the rotary table 1.
are designed to rotate in the same direction and at the same speed.

Next, above the rotary table 1 on which the draw-out reels R ₁ and R ₂ are mounted, the drawn-out electric wires C ₁ and C ₂
A duct 6 having a U-shaped cross section is provided, and a cylindrical guide tube 7 is provided above the center of the duct 6. A pin P passes through the center of the duct 6 that communicates with the guide tube 7.
Electric wire C ₁ pulled out from pull-out reel R ₁ , R ₂ ,
C ₂ is designed to be crossed and guided into the guide tube 7.

As shown in FIG. 4, in the upper stage of the device 100 there is a frame 8 that rotates around an axis Z driven by a motor _M2 .
is provided. The guide tube 7 is connected to the axis Z of this frame 8.
It is attached to the frame 8 so as to be positioned above.

Two rollers 9 having many undulations on their surfaces are provided above the guide tube 7, and the rotation B ₃ of one roller 9 and the rotation axis R ₄ of the other roller 9 are engaged with each other by a gear 11. They are mounted so that they rotate in opposite directions.

The distance between the rollers 9 is such that the plurality of electric wires C ₁ and C ₂ passing through the guide tube 7 can be clamped and fixed, and the electric wires C ₁ and C ₂ can be sent upward by rotation of the rollers 9. It is set to the extent that it is possible.
Therefore, the thickness is always set smaller than the thickness of the plurality of sandwiched electric wires C ₁ and C ₂ .

Note that the thickness varies depending on the type of wire, so for example, as shown in _FIG .
Fit the bearings 12 into B ₄ , attach the U-shaped fittings 13 to the outside of these bearings 12,
The metal fittings may be fastened together with bolts 14, and the spacing between the rollers 9 may be adjusted by tightening the bolts 14.

A mounting shaft 10 is provided above the roller 9, the ends of which are pivotally connected to the frame 8, and the take-up reel R is mounted thereon. This mounting shaft 10 has a structure in which a sleeve 15 biased by a spring is fitted,
By moving the sleeve 15, the take-up reel R can be attached and detached. The take-up reel R is adapted to rotate together with the mounting shaft 10.

In Fig. 4, a gear A ₁ is attached to the upper end of the guide tube 7.
is provided, and this gear A ₁ meshes with a gear A ₂ fixed to a shaft B ₁ pivotally supported on the frame 8.
A bevel gear A ₃ is separately fixed to one end of the shaft B ₁ , and a bevel gear A ₄ that meshes with the bevel gear A 4 is pivotally supported on a frame 8 _.
is fixed at one end. A pulley _A5 is fixed in the middle of this shaft _B2 . On the other hand, a pulley _A8 is provided on the mounting shaft 10 of the take-up reel R, and a belt is stretched between the pulley _A5 and the pulley _A8 . Further, a gear A ₆ is fixed to the other end of the shaft B ₂ and connected by a chain to a gear A ₇ fixed to one end of a shaft B ₃ provided parallel to the shaft B ₂ .

With this structure, when the frame body 8 rotates due to the drive of the motor _M2 , the shaft rotates as the frame body 8 rotates.
B ₁ , B ₂ , B ₃ and the mounting shaft 10 are adapted to rotate. The sizes of the gears A ₁ , A ₂ , A ₆ , A ₇ , bevel gears A ₃ , A ₄ , and pulleys A ₅ , A ₈ are based on the rotation of the frame 8, the rotation of the roller 9, and the take-up reel. It is determined that the rotation of R is performed in a preferable state. Here, the frame 8, roller 9, and take-up reel R are rotated by the same drive source, motor _M2 .

With this structure, the electric wires C ₁ and C ₂ pulled out from the draw-out reels R ₁ and R ₂ are twisted and further twisted to become the stranded wire C. In that case, the electric wires C ₁ and C ₂ If the diameter is the same, the drawer reel
R ₁ , R ₂ : It is preferable to set the rotations of the motors M ₁ and M ₂ so that the rotation of the frame 8 is 2:1. For this reason, it is preferable that the motors M ₁ and M ₂ be variable speed motors that can arbitrarily change their rotation.

In the embodiment, the pull-out reels R ₁ and R ₂ are rotated by the motor M ₁ , but separate drive sources may be provided for each of the pull-out reels R ₁ and R ₂ . Instead of M ₂ , separate drive sources for rotating the frame 8, roller 9, and take-up reel R may be provided. Further, the rotation of the frame 8, roller 9, and take-up reel R is not limited to mechanical control as in the embodiment, but may be electrically controlled.

(Effects of the Invention) As explained above, with the stranded wire forming apparatus according to the present invention, relatively short stranded wires can be easily produced by simply setting the draw-out reel around which the wires to be twisted are wound. This makes it possible to efficiently produce stranded wires in a short time, which is conventionally troublesome by manual labor, and to produce stranded wires with uniform twist.

In addition, since the entire device is compact and can be easily transported, it can be easily transported and installed at the site where the control device is located, and wiring work can be performed, making wiring work more efficient.

Further, since a winding reel is used, after winding the stranded wire, by attaching and detaching the reel, the stranded wire can be conveniently transported and handled, and is also convenient for storage.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the strand forming device according to the present invention, FIG. 2 is a front view of the entire device, FIG. 3 is a view of the lower stage of the device viewed from above, and FIG. 4 is the upper stage of the device. FIG. 5 is a perspective view showing another example of the electric wire feeding means. Explanation of symbols 1... Turning table, 2... Mounting shaft, 3... Rotating shaft, 6... Duct, 7... Guide cylinder, 8... Frame, 9...
Roller, 10...Mounting shaft, C, _C1 , _C2 ...Electric wire, _R1 ,
R ₂ ...drawer reel, R...take-up reel.

Claims (1)

[Claims] 1. A plurality of rotary tables having a mounting shaft for a draw-out reel around which an electric wire is wound, and pivotally supported by a rotating shaft provided in a direction perpendicular to the mounting shaft of the draw-out reel. and a guide means including a guide tube that converges the plurality of electric wires pulled out from each draw-out reel, and a feeding means including a roller that feeds out the plurality of electric wires guided in the guide tube in a state where they are held between them. A frame body is equipped with a take-up reel for winding the plurality of wires sent out, the take-up reel, the feeding means, and the guide tube are assembled together, and rotates around the guide tube, Rotate the frame at the same time as you rotate the turntable,
A stranded wire forming device characterized by individually twisting electric wires drawn out from a drawing reel and then twisting a plurality of twisted electric wires together.