JPH0657338A - Warm coiling device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a warm coiling device, which is advantageous in saving the installation space and is advantageous in widening the range of set temperatures for heating the wire. [Structure] This warm coiling device comprises a heating furnace 1 having a heating element 40 and a fan 41, and a coiling machine for forming a wire W led out of the heating furnace 1 into a coil shape. The heating furnace 1 comprises a furnace body 2 having a furnace chamber 20 into which a continuous wire W is introduced from its tip, and a rotating body 5 rotatably held in the furnace chamber 20 and having a wire winding portion 53. .
As the rotating body 5 rotates, the wire W is wound, and the wound wire W is unwound from the tip of the wire W and led out of the furnace chamber 20 to reach the coiling machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm coiling device for heating a wire rod in a warm region to form a coil.

[0002]

2. Description of the Related Art Conventionally, in coiling a wire rod, a long heating furnace and a coiling machine arranged in series with the heating furnace are used to move the wire rod in a straight line while passing through the heating furnace. A device is known in which a wire is heated to a predetermined temperature range and then the wire is coiled by a coiling machine.

As a coiling device for heating and coiling a wire rod, a coiling machine 100 for forming a linear wire rod W into a coil as shown in FIG. 6 has been conventionally used.
And a high-frequency heating device 200 having an induction heating coil 201 incorporated in the coiling machine 100 is known (Japanese Patent Laid-Open No. 2-160130). The coiling machine 100 includes a feeding guide 101, a mandrel 102, a coiling pin 103, and a pitch tool 104.
And the induction heating coil 201 has a feeding guide 1
01. Here, the wire W is heated to a set temperature range by the induction heating coil 201, and the mandrel 102
Also, the coiling pin 103 bends it to a predetermined curvature, and the pitch tool 104 gives a predetermined pitch.

[0004]

By the way, in the above-mentioned apparatus, since the wire rod W traveling straightly is heated, the space of the region for heating the wire rod W becomes large. Therefore, the length of the heating furnace becomes long, and the high frequency heating device 20
The installation space of the coiling device having 0 becomes large. Moreover, since the wire W that travels in a straight line is heated, there is a problem that the width of the set temperature is narrowed.

The present invention has been made in view of the above situation, and an object thereof is to shorten the length of a heating furnace.
An object of the present invention is to provide a warm coiling device which is advantageous in saving the installation space and is also advantageous in widening the range of set temperatures.

[0006]

The warm coiling device of the present invention comprises a furnace body having a furnace chamber into which a continuous wire is introduced from its tip, and a wire rod that is rotatably held in the furnace chamber and rotates as the wire rotates. A heating element that has a wire rod winding section that winds up the wire rod and unwinds the wound wire rod from its tip to bring it out of the furnace chamber. It is composed of a furnace and a coiling machine for forming a wire drawn out of the furnace chamber of the heating furnace into a coil shape.

The furnace chamber of the furnace body can be generally formed by partitioning with a heat insulating material. A method for heating the furnace chamber can be appropriately selected. For example, a method in which a heating source is provided in the furnace chamber or a method in which hot air or hot air is supplied to the furnace chamber from a heating source installed in a place different from the furnace body may be used. . A heating heater may be used as a heating source, and a combustion furnace or an induction heating coil may be used depending on the case.

The rotating body is for winding a wire rod. The rotating body is rotatably held in the furnace chamber. here,
It is possible to adopt a structure in which a rotary shaft is provided at the center of rotation of the rotary body and one end or both ends of the rotary shaft are rotatably held in the furnace body. Alternatively, a structure in which an appropriate number of rotating rolls are provided on the outer peripheral surface of the rotating body and the outer peripheral surface of the rotating roll is brought into contact with the outer peripheral surface of the rotating body to rotatably support the rotating body can be employed. The rotating body may be driven by a coiling machine or may be driven by itself.

[0009]

The continuous wire is introduced into the furnace chamber from its tip and wound around the wire winding portion of the rotating body. The wire rod wound around the wire rod winding portion of the rotating body is heated in the warm region.
Then, with the rotation of the rotating body, the wire rod is unwound from the tip portion thereof and led out of the furnace chamber. Then, the wire rod is formed into a coil by a coiling machine.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the device of the present invention will be described below with reference to FIGS. (Structure of Embodiment) In this embodiment, as shown in FIG. 1, a furnace body 2 of a heating furnace 1 has a furnace chamber 20 partitioned by a heat insulating material 10 and an inlet guide 21 for communicating the furnace chamber 20 with the outside. And an outlet guide 22 are provided. The inlet guide 21 guides the wire W and controls the supply direction of the wire W. The outlet guide 22 is for guiding the wire W to the coiling machine 9 described later.

Further, a back tension roller 25 is rotatably provided on the inlet guide 21 side of the furnace body 2. The back tension roller 25 is rotationally driven in the direction of arrow A1 to prevent the wire rod W from slacking when the wire rod W is wound around the rotating body 5. The pressure applied by the back tension roller 25 is adjusted by the cylinder 26.
The drive source of the back tension roller 25 can be appropriately selected from a structure using a magnet and a structure using a drive motor.

Further, as shown in FIG. 1, an abnormal tension detector 30, a warm air passage 31, and an infrared thermometer 32 are provided on the outlet guide 22 side of the furnace body 2. Abnormal tension detector 30
Uses a built-in spring to urge the wire W with the roller 30a,
The slack of the wire W is prevented, the abnormal tension of the wire W is detected, and the rotation of the rotating body 5 and the driving of the coiling machine 9 are stopped at the time of abnormality. The warm air passage 31 is for maintaining the temperature of the wire W by sending the hot air in the furnace chamber 20 in the direction of arrow F1 and supplying it to the wire W that has passed through the outlet guide 22. The infrared thermometer 32 measures the temperature of the wire W that has passed through the outlet guide 22.

As shown in FIG. 1, the furnace body 2 has a heater unit 40a having a large number of heating elements 40, a fan 41, a fan motor 42 for driving the fan 41, and a warm air guide plate 4.
3 is provided. Here, when the fan 41 rotates while the heating element 40 is generating heat, the warm air circulates in the furnace chamber 20 in the direction of arrow B1. Now, for the furnace body 2, the rotating body 5
Is rotatably provided. The rotating body 5 has a rotating shaft 50.
And a large number of winding plates 5 radially connected to the rotary shaft 50.
It consists of 1. As shown in FIG. 4, a wire rod winding portion 53 is formed on each winding plate 51. Each wire rod winding section 53 is first
It has an inclined portion 531, a horizontal portion 532, and a second inclined portion 533. The inclination angle of the first inclined portion 531 with respect to the horizontal portion 532 is indicated by θ1, the inclination angle of the second inclined portion 533 is indicated by θ2, and θ1 <θ2.

As shown in FIG. 2, a first bearing 61 and a second bearing 62 are provided on the back side of the furnace body 2, and one end of the rotary shaft 50 of the rotating body 5 has a first bearing 61 and a second bearing 62. It is rotatably held by the bearing 62. A disc brake 64 for stopping the rotary shaft 50 is provided between the first bearing 61 and the second bearing 62. As shown in FIG. 2, the furnace body 2 is provided with a door 28 for opening and closing the furnace chamber 20.

A coiling machine 9 is shown in FIG. The coiling machine 9 is for forming the wire W led out of the furnace chamber 20 of the heating furnace 1 into a coil shape, and has the same structure as the conventional one. (Operation of Embodiment) Next, the operation of the present apparatus will be described together with the method of using the apparatus. First, the wound body 8 in which a continuous wire W (oil tempered wire, diameter ² to 5 mm, tensile strength 200 kg / mm ² ) is wound in multiple layers is installed on the material table 80. In that state, the door 28 is opened and the tip of the wire W is inserted into the entrance guide 2
1, while rotating the rotating body 5 by hand in the direction of arrow C1 by hand, thereby winding the wire W in a loop shape around the wire winding portion 53 of the rotating body 5 in the direction of arrow C1 a predetermined number of times, and further winding it. The tip of the attached wire W is set on the coiling machine 9.

When the coiling machine 9 is driven in this state, the wire W moves to the coiling machine 9 side for 200 to 100
It is pulled at a speed of 0 mm / sec. As a result, the rotating body 5 is driven to rotate in the direction of arrow C1. As a result, the wire rod W wound around the wire rod winding portion 53 of the rotating body 5 is unwound one after another from the tip end side thereof, and is shaped into a coil by the coiling machine 9. At the same time, the arrow C of the rotating body 5
By rotating in one direction, the wire rod W from the winding body 8 is sequentially wound around the wire rod winding portion 53 of the rotating body 5. This process is repeated as the rotating body 5 rotates.

At the time of winding, as can be understood from FIG. 4, the wire W which has passed through the inlet guide 21 is first
The wire is wound around the first inclined portion 531 of the wire rod winding portion 53 of the rotating body 5, and is arranged along the axial direction of the rotating body 5, that is, the arrow D1,
It moves along the D2 direction, is unwound from the second inclined portion 533 side, and reaches the outlet guide 22. Therefore, in this embodiment, as shown in FIG. 3, the center line P1 of the wire rod portion W1 before being wound around the rotating body 5 and the center line P2 of the wire rod portion W2 after being unwound from the rotating body 5. The line P2 is a distance L1 away.

By the way, when the wire W is wound, the heating element 40 and the fan 41 are operating, so the inside of the furnace chamber 20 is heated. Therefore, the wire winding portion 5 of the rotating body 5
The wire W wound around the wire 3 in multiple layers is heated to 100 to 550 ° C. in the temperature atmosphere in the furnace chamber 20. The heating temperature of the wire W is selected according to the type of the wire W, but is generally 100 to 550 ° C.

(Effects of the Embodiment) As can be understood from the above description, the wire W is heated in a state in which the wire W is wound around the wire winding portion 53 of the rotating body 5 in a multiple manner. The length of the heating furnace 1 can be shortened and the installation space can be saved as compared with the conventional method of heating as it is.

Furthermore, in this embodiment, the heating time of the wire W can be changed by adjusting the number of turns of the wire W around the rotating body 5. That is, the more the wire W is wound around the rotating body 5, the longer the heating time becomes, and the less the wire W becomes, the shorter the heating time becomes. Therefore, the heating temperature of the wire W can be easily adjusted.
It is advantageous to widen the range of set temperatures for heating the. When heating the wire rods W having different diameters, the heating temperature of the wire rods W tends to be affected by the diameter of the wire rods W. In this case, the winding number of the wire rod W with respect to the rotating body 5 is adjusted. I can deal with it. Therefore, the wire rods W having various diameters can be dealt with, and versatility can be secured.

In addition, in this embodiment, when winding,
As can be understood from FIG. 4, the wire W is firstly attached to the rotor 5.
Is wound around the first inclined portion 531 of the wire rod winding portion 53 of
The rotary body 5 moves along the axial direction, that is, along the arrow D1 direction, is unwound from the second inclined portion 533 side, and reaches the outlet guide 22. In this way, since the inclination of the first inclined portion 531 is used, continuous winding and unwinding of the wire W can be favorably performed while maintaining the number of windings on the wire W.

Further, in this embodiment, the rotating body 5 is the rotating shaft 5
0 and a large number of winding plates 51 that are radially connected to the rotating shaft 50 and have a wire rod winding portion 53, so that the weight of the rotating body 5 can be reduced and the rotation of the rotating body 5 can be improved. Moreover, since the wire rod W is wound around the wire rod winding portion 53 of each winding plate 51 radially connected to the rotary shaft 50, the wire rod winding portion 5
The contact area between the wire 3 and the wire W becomes smaller accordingly. Therefore, the sliding resistance at the time of winding and unwinding the wire material W becomes small, and continuous winding and unwinding can be favorably performed.

(Other Examples) In the above embodiment, the furnace chamber 20
The heating is performed by the heating element 40 and the fan 41, but the heating is not limited to this, and a known heating source can be adopted. Further, the material and diameter of the wire W to be used and the heating temperature of the wire W are not limited to those in the above-mentioned embodiment, and can be appropriately selected.

In addition, the present invention is not limited to the embodiments shown in the above-mentioned drawings, but can be appropriately modified if necessary.

[0025]

According to the apparatus of the present invention, the wire rod is heated in a state in which the wire rod is wound around the wire rod winding portion of the rotating body in a multiple manner. Therefore, as compared with the conventional method in which the wire rod is heated in a straight line, The length of the heating furnace can be shortened and the installation space can be saved. Furthermore, since the heating time of the wire can be changed by adjusting the number of turns of the wire with respect to the rotating body, the heating temperature of the wire can be easily adjusted, which is advantageous in widening the set temperature range.

[Brief description of drawings]

FIG. 1 is a sectional view of a heating furnace.

FIG. 2 is a view taken along the line H-H in FIG.

FIG. 3 is a view taken along the line EE of FIG.

FIG. 4 is a configuration diagram of a main part of a rotating body.

FIG. 5 is a configuration diagram schematically showing the entire apparatus.

FIG. 6 is a configuration diagram schematically showing a warm coiling device according to a conventional example.

[Explanation of symbols]

In the figure, 1 is a heating furnace, 2 is a furnace body, 20 is a furnace chamber, 25 is a back tension roller, 40 is a heating element, 41 is a fan, 5
Is a rotating body, 50 is a rotating shaft, 51 is a winding plate, 53 is a wire winding portion, 531 is a first inclined portion, 532 is a horizontal portion, and 533 is a second inclined portion.

Claims (1)

[Claims] 1. A furnace body having a furnace chamber into which a continuous wire rod is introduced from its tip, and a rotatably held inside the furnace chamber. The wire rod is wound with the rotation and the wound wire rod is its tip. A heating unit having a wire rod winding unit that winds the wire rod out of the furnace chamber and draws it out of the furnace chamber; and a heating furnace that heats the wire rod wound around the wire rod winding unit of the rotating body, and the heating unit outside the furnace chamber. Warm coiling device comprising a coiling machine for forming the formed wire into a coil.