JPS6014795Y2 - Stranding machine cradle angle detection device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device for detecting the rotation angle of a cradle in a wire twisting machine.

BACKGROUND ART In the work of twisting wires such as electric wires, cylindrical wire twisting machines, horizontal double twisting type wire twisting machines, etc. are used to perform the wire twisting work at high speed.

In these wire twisting machines, both ends of a cradle 4 in which a bobbin 5 wound with electric wire is suspended are supported by a horizontal shaft 8,
A filament passage part 6 is provided between both horizontal shafts 8, 8 so as to rotate around the outside of the cradle 4, and the electric wire of another bobbin is passed through the filament passage part 6, and the horizontal shaft 8 is rotated at high speed. Twisting work is performed by winding the wires around the outside of the wire.

In this case, in order to always maintain the cradle 4 in a horizontal position, it is supported via a ball bearing 7 between the horizontal shaft 8 and both end shafts of the cradle, allowing it to rotate freely and preventing the cradle 4 from rotating. In order to do this, the bobbin 5 is installed below the center line of rotation of the cradle to lower the center of gravity, and a weight is installed.

However, the cradle 4, which is supported by a horizontal shaft 8 rotating at a high speed via a ball bearing, cannot avoid slight rocking due to the frictional resistance of the ball bearing 7.

However, due to an abnormality in the ball bearing or the condition of the bobbin 5 mounted in the cradle, it may swing significantly.
Eventually, the cradle 4 rotates and the bobbin falls off and flies out of the cover, often causing serious accidents such as injury to humans and damage to equipment.

Although there has been a strong desire for a method to automatically stop the machine when the cradle rotates, there has been no good method.

This idea was made to eliminate the above drawbacks.
The cradle may swing due to an abnormality in the ball bearing, etc.
This is to automatically stop the machine if it rotates beyond a certain angle.

One embodiment of this invention will be described with reference to the drawings. As shown in FIGS. 2 and 3, a mercury switch is mounted on a part of the cradle 4 so as to be inclined in the direction in which the switch is activated when the cradle is rotated.

Slip rings 9 and 10 are provided on the horizontal shaft 8 via an insulator, and a brush 11 that contacts the slip ring 9 is provided on the cradle.
The brush 11 is brought into contact with one electrode of the mercury switch 1, and the other electrode of the mercury switch is electrically connected to the cradle.

Slip rings 9 and 10 are connected.

A brush 12 that contacts the slip ring 10 is provided and is connected to a control device 13 that controls the operation and stop of the wire twisting machine.

When the wire twisting machine installed as described above is operated and the cradle is in a normal state and in a horizontal position, the mercury 2 in the mercury switch is located downward due to gravity, and the electrodes 3 are separated from each other. However, if the cradle rotates due to something wrong with the ball bearing 7, the mercury switch 1 also rotates, so the mercury 2 moves and comes into contact with the electrodes 3, thereby establishing a connection between the electrodes 3.

When the wire twisting machine is grounded, the control device 13 is grounded through the electrode 3 of the mercury switch, the brush 11, the slip ring 9, the slip ring 10, and the brush 12, and the braking device is activated to stop the wire twisting machine. I can do it.

Depending on the inclination angle at which the mercury switch 1 is attached, the rotation angle of the cradle at which the wire twisting machine is stopped can be arbitrarily set.

There are various shapes of mercury switches, as illustrated in FIG. 4, and the above explanation is for the installation of the mercury switch shown in A and B in FIG.

In case C, the same effect can be obtained by changing the wiring of the control device 13.

The above is one embodiment of the present invention, and as another embodiment when it is impossible to install a slip ring on an existing wire twisting machine etc., the mercury switch 1, battery and lamp are attached to the cradle, and the cradle is When the mercury switch rotates and the mercury switch is activated, the lamp can be turned on, and light can be detected from the outside and the control device can be activated to stop the machine.

As described above, the present invention has an extremely simple structure and has the effect of reliably preventing accidents caused by rotation of the cradle.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway diagram showing the structure of the cradle of the wire twisting machine, Figure 2 is an installation diagram of the mercury switch of the present invention, Figure 3 is an explanatory diagram of the operation of the present invention, Figure 4 is various installations of the mercury switch of the present invention. figure. 1...Mercury switch, 2...Mercury, 3
...Mercury switch electrode, 4...Cradle, 5...Bobbin, 6...String passage section, 7...Ball bearing , 8...
・Horizontal axis, 9...Slip ring, 10...
...Slip ring, 11...Brush, 12.
...Brush, 13...Control device.

Claims (1)

[Scope of utility model registration request] A cradle angle detection device for a wire twisting machine, characterized in that a mercury switch is provided on a cradle 4 of the wire twisting machine at a position where the switch moves as the cradle rotates.