JPH0551170A - Automatic wire material supply device - Google Patents

Abstract

PURPOSE:To allow wire material to be pulled smoothly out of the outside of a coil while keeping always constant tension by driving/stopping a motor, provided with a clutch and a brake and erected at the center of the coil, in correspondence with the on-off operation of a switch for detecting the tension of wire material. CONSTITUTION:A shaft 20 driven by a motor 12 is erected piercing a coil 50 placed on the cover 18 of a casing 10. An arm is tiltably fitted to the tip of the shaft 20, orthogonally to the shaft 20. The guide member 30 of wire material 52 is provided at the tip of a member 27 extended diagonally downward from the tip of the arm. A cylinder member 32 is slidably fitted to the outer periphery of the shaft 20 and connected to the arm by a rod 34. A disk like magnetic body 35 is fitted to the lower end of the cylinder member 32, and a magnetic switch 40 is disposed opposedly. When the tension of the wire material 52 is increased, the arm is tilted, and the magnetic switch 40 is turned on to drive the motor 12. The arm is thereby driven forcibly to pull out the wire material 52 positively from the coil 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically unwinding and feeding a wire rod from a bundle of wound wire rods.

[0002]

2. Description of the Related Art For example, a wire material such as a coated electric wire is wound around a bobbin or the like, or is supplied as a bundle of winding materials without using the bobbin, and a customer cuts it into a regular length or peels the coating. The terminals are crimped and processed. When the wire rod is taken out from the winding material, the wire rod is taken out by pulling out the wire end portion of the outer circumference portion of the winding material or the wire end portion of the inner circumference portion of the winding material.

[0003]

As for the winding material, it is necessary to wind the wire material relatively hard to prevent the winding bundle from collapsing. For this reason, adjacent wire rods may bite into each other, and smooth rewinding may not be achieved when the wire rods are taken out. If this is forcibly taken out, it is necessary to apply excessive tension to the wire, which causes problems such as cutting and stretching of the wire. Therefore, the present invention provides an automatic wire rod supply device that solves the above-mentioned conventional problems.

[0004]

In the automatic wire rod feeding apparatus of the present invention, a motor is arranged in the casing, and a shaft driven by the motor is erected. A wire rod drawn from the outside of the winding placed on the casing upper part is guided by a guide member provided at the tip of an arm mounted orthogonally to the upper end of the shaft. If the tension of the wire changes,
The arm is tilted, and means for detecting tilting of the arm is provided.

[0005]

The means for detecting the tension of the wire rod turns the motor on and off to drive and stop the swing movement of the arm. By this action, the wire is smoothly pulled out from the winding, and the tension is kept constant.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view showing an embodiment of the apparatus of the present invention,
FIG. 2 is a plan view of the main part. An automatic wire rod feeder, generally designated by reference numeral 1, includes a motor 12 in a casing 10.
The motor 12 is a motor with a clutch brake,
The shaft 20 is driven. A frame 14 disposed in the casing 10 supports a bearing 16, and the bearing 16 rotatably supports a shaft 20 driven by the motor 12 as indicated by an arrow R. A horizontal arm 25 is attached to the upper end of the shaft 20 via a pin 22. The horizontal arm 25 rotates together with the shaft 20 in the arrow R direction, and is further tiltable in the arrow A and B directions.

A hanging arm 27 is attached to one end of the horizontal arm so as to hang down obliquely, and a guide hole 28 through which the wire passes is provided at the tip of the hanging arm. Guide hole 2
A guide member 30 using a spring is attached to the outer side of 8.

One end of a rod 34 is attached to the opposite side of the hanging arm 27 with the pin 22 of the horizontal arm 25 interposed therebetween. A cylindrical member 32 is slidably fitted on the outer peripheral side of the rotary shaft 20, and the other end of the rod 34 is attached to the cylindrical member 32.
It is attached to the upper end of. The cylindrical member 32 penetrates through the hole of the cover 18 attached to the upper portion of the casing 10 to form the casing.
A ring-shaped magnetizing body 35 is attached to the outer peripheral portion of the lower end of the cylindrical member 32 and extends into the sing 10.

A magnetic switch 40 is disposed above the frame 14 in the casing 10, and a detector 42 of the magnetic switch 40 faces the magnetism generator 35 in a non-contact state.
A bobbin 60 wound with the wire 52 is placed on the cover 18. The winding 50 is not necessarily wound around a bobbin, and may be a bundle of windings without using a bobbin. The wire rod 52 is taken out from the outside of the winding wire 50, passes through the guide hole 28 and the guide member 30 at the tip of the hanging arm 27, and is supplied in the arrow P direction. The wire rod 52 sent in the direction of arrow P is drawn out by, for example, a wire rod feeder (not shown). When the wire rod 52 is not easily separated from the outside of the winding wire 50, the wire rod 52 is pulled in the direction of the arrow P by the feeding device, so that the hanging arm 27 and the horizontal arm 25 are pinned to the pin 3.
Tilt in the direction of arrow A about 2. Due to this tilting, the rod 34 pushes the cylindrical member 32 downward (in the direction of arrow C).

When the cylindrical member 32 moves in the direction of arrow C,
The disk-shaped magnetic generator 35 faces the detector 42 of the magnetic switch 40. As a result, the detector 42 senses the magnetism of the magnetic generator 35, and the magnetic switch 40 is turned on. When the magnetic switch 40 is turned on, the motor 12 is activated and the shaft 2
The horizontal arm 25 is driven in the direction of arrow R via 0. As a result, the wire rod 52 is separated from the outer peripheral portion of the winding wire 50 and is smoothly supplied.

When the tension applied to the wire rod 52 is released, the torque due to the weight of the hanging arm 27 overcomes and the horizontal arm 25 is rotated in the direction of arrow B. By this rotation, the rod 34 pulls up the cylindrical member 32 in the direction of arrow D,
The magnetism generating body 35 moves away from the front position of the detector 42 of the magnetic switch 40. By this operation, the magnetic switch 40 is turned off, the driving of the motor 12 is stopped, and the brake is operated. Since the motor 12 is broken, the horizontal arm 2
5 does not idle and stops, and the wire rod 52 is not pulled out excessively. Hereinafter, this cycle is repeated. Therefore, the wire rod 52 is always pulled out by the supply device while maintaining a constant tension without excess or deficiency.

[0012]

INDUSTRIAL APPLICABILITY As described above, the present invention is an apparatus for automatically drawing and supplying a wire rod from a winding wire, which is erected at the center of the winding wire and is equipped with a clutch and a motor with a brake. It is equipped with an arm to be driven, a wire rod guide device provided at the tip of the arm, and a switch for detecting the tension of the wire rod, and the motor is driven and stopped in response to the on / off state of the switch. Therefore, the wire is always pulled out from the outside of the winding while maintaining a constant tension. As a result, it is possible to prevent wire breakage due to excessive tension acting on the wire rod and entanglement due to excess wire rod being pulled out.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is a plan view of the use portion.

[Explanation of symbols]

 1 Automatic Wire Material Supply Device 10 Casing 12 Motor 14 Frame 16 Bearing 20 Shaft 25 Arm 30 Wire Material Guide Device 32 Cylindrical Member 34 Rod 35 Magnet Magnet 40 Magnetic Switch 50 Winding 52 Wire Material 60 Bobbin

Claims (2)

[Claims] 1. A motor disposed in a casing, a winding mounted on the upper portion of the casing, and a shaft driven by the motor penetrating a central portion of the winding. The wire rod includes an arm connected orthogonally to the tip of the shaft, a guide device provided at the tip of the arm to pull out the wire rod of the winding from the outer peripheral side, and means for detecting the tension of the wire rod. An automatic wire feeder that has the function of keeping the tension of the wire uniform by turning the motor on and off according to the tension of the wire. 2. An arm that is tiltably supported with respect to the shaft, a cylindrical member that is slidably fitted to the outer peripheral portion of the shaft, and a rod that connects the arm and the cylindrical member. 2. The automatic wire feeding device according to claim 1, further comprising a disc-shaped magnetic body attached to the outer peripheral portion of the cylindrical member, and a magnetic switch arranged so as to face the magnetic body.