JPS6241010Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention uses one or more sets of rollers to sandwich the wire, and applies elastic force to the rollers to apply pressure, and the frictional force automatically moves the wire. The present invention relates to a device for feeding.

[Prior Art] In a device for unwinding a cable from a cable winding frame during cable laying work, a set of unwinding rings is rotatably supported at the tips of a set of arms, a spring is provided at the rear end of the arm, For example, Japanese Patent Publication No. 48-43714 describes applying elastic force to a feeding ring via an arm to pressurize a cable between a pair of feeding wheels.

In addition, the welding wire feed roller that holds the welding wire between two grooved rollers was developed in Utility Model 48-20918.
It is stated in the No.

Furthermore, as a conventional device of this type, there was one shown in FIG. In the figure, 1a is the main body of the wire feeding device, 2a is a swinging arm, 3 is a pin that supports the swinging arm 2a, 4 is a pressure roller attached to the swinging arm 2a, 5 is a drive roller, and 6 is a drive A motor 7 is used to rotate the roller 5, and wires 8 and 9 are fed between the pressure roller 4 and the drive roller 5.
is a hollow guide tube for guiding the wire 7 between the pressure roller 4 and the drive roller 5, and in the figure, the guide tube 9 is on the inlet side and the guide tube 9 is on the outlet side. 10 is a knob, 11
a is a coil spring.

In this device, when the wire 7 is fed by the feeding device, it is first necessary to separate the pressure roller 4 from the drive roller 5 and place the wire 7 therebetween. This requires turning the knob 10 to loosen the coil spring 11a, and then lifting the swinging arm 2a to separate the pressure roller 4. In other words, it is necessary to turn the knob 10 and then lift the swinging arm 2a. Two actions are required.

Next, the wire is inserted and pressed by the coil spring 11a so as to be sandwiched between the pressure roller 4 and the drive roller 5. By rotating the driving roller 5 by the motor 6 in this state, the wire 7 is fed to the welding part through the guide tubes 8 and 9.

[Problems to be solved by the invention] Since the conventional wire feeding device is operated as described above, when the wire 7 is first fed between the drive roller 5 and the pressure roller 4, the knob 10 must be turned. It was necessary to operate the swinging arm 2a to lift it. The force pushing the swinging arm 2a of the coil spring 11a is generated by the wire 7.
This affects the feeding force of the knob 10.
Depending on the operation of the wire 7, the feeding force of the wire 7 may fluctuate.

[Means for solving the problem] As shown in FIG. 2, the swinging arm 2b that grips the roller 4 is penetrated through a part of the swinging arm 2b, and is screwed onto the feeding device main body 1b, and swings in the above-mentioned screwed state. A protruding contact portion 12 interposed between the movable arm 2b and the feeding device main body 1b
The roller 4 is provided with a knob-shaped operating body 12 having a
Hold the fulcrum pin 3 on one side and the spring 1 on the other side.
1b is provided.

[Function] The operating body 12 is rotated to bring the contact portion 12b into contact with or away from the swinging arm 2b, and by applying force to the swinging arm 2b in the opposite direction to the pressure, the pressure is reduced or Disabled and always the above-mentioned swing arm 2
deactivate for b.

[Example] In FIG. 2, 1b is the main body of the wire feeding device, 2b is a swinging arm, 3 is a pin supporting the swinging arm 2b, 4 is a pressure roller, 5 is a drive roller, and 6 is a drive roller 5 7 is a wire to be fed; 8 and 9 are hollow guide tubes for guiding the wire 7; tube 8 is on the inlet side and tube 9 is on the outlet side. 11b is a coil spring, and normally the pressure roller 4 attached to the swinging arm 2b is moved by this coil spring 11b.
It is pressed against the drive roller 5 so as to be pulled about the pin 3 as a fulcrum. Reference numeral 12 denotes an operating body, that is, an opening knob. Normally, the contact portion 12b for rotating the swinging arm 2b does not contact the swinging arm 2b, and by turning the knob 12, the contact portion 12b is turned.
b causes the swinging arm 2b to rotate (clockwise).

In such a configuration, when the wire 7 is inserted between the pressure roller 4 and the drive roller 5, when the release knob 12 is turned, the contact portion 12b directly lifts the swinging arm 2b, so that the pressure force is reduced. A gap is provided between the reduced or nullified pressure roller 4 and the drive roller 5, and the wire 7 is passed through the gap. Thereafter, when the knob 12 is turned in the opposite direction to separate the abutting portion 12b from the swinging arm 2b, the wire is pressurized by the constant force of the coil spring 11b.

This is an operating mechanism that can be operated more quickly than the conventional operation of turning the knob 10 which also serves as pressure force adjustment, and there is no fear that the pressure force will change.

FIG. 3 shows the pressurizing force adjustment mechanism of this wire feeding device in one row. In FIG. 3, reference numeral 13 denotes a slide screw which is attached to the swinging arm 2c and can be operated to adjust the compression force of the coil spring 11b. This pressurizing force adjustment mechanism does not require any operation when separating the pressurizing roller 4 from the drive roller 5, and no fluctuation in the pressurizing force occurs.

[Effects of the invention] As described above, according to this invention, the wire insertion operation can be performed easily, and the pressure applied to the wire after such an operation does not change and is stable. This makes it possible to realize wire feeding.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of a conventional wire feeding device, Figure 2
FIG. 3 shows a configuration diagram of a wire feeding device according to an embodiment of this invention. 1b...main body, 2c, 2c...swinging arm, 3...
Pin, 4... Pressure roller, 5... Drive roller, 7
... Wire, 11b ... Coil spring, 12 ... Knob type operating body, 12b ... Contact portion, 13 ... Slide screw. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] In a wire feeding device that feeds the wire 7 while applying pressure to the roller 4, the feeding device main body 1b passes through the central corner of the L-shaped swinging arm 2b that grips the roller 4. A knob-shaped operating body 12 having a protruding abutting portion 12b that is screwed together and interposed between the swing arm 2b and the main body 1b in the screwed state, and the roller 4 are sandwiched between the rocker and the rocker. A spring is provided between the tip of one arm of the movable arm 2b and the main body 1b, and a fulcrum pin 3 that loosely attaches the swinging arm 2b to the main body 1b, and the lower tip of the other arm and the main body 1b. 11b, the operating body 12 is rotated to bring the contact portion 12b into contact with or away from the swinging arm 2b, and the swinging arm 2b is
The wire is characterized in that the pressing force is reduced or nullified by applying force in the opposite direction to the pressing force, and the abutting portion 12b is normally in a non-operating state with respect to the swinging arm 2b. Feeding device.