JPH1094823A - Wire drawing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly execute drawing work by selecting warm drawing or cold drawing without scratching a wire and lowering energy efficiency. SOLUTION: A supply reel 12 around which the wire 10 is coiled is freely rotatably loaded in a supply stand 22. A heating furnace 16, a die 18 and coiling drum 14 are arranged in series on the downstream side of the supply stand 22. The heating furnace 16 is freely slidably loaded on a pair of guide rails 32, 32 which are separated in the feeding direction of wire and extended in the direction perpendicular to the feeding direction. The heating furnace 16 is moved between the heating position where the furnace is aligned with the pass line between the 2nd guide 30 and the die 18 and the passage of the wire 10 is allowed and the retreating position where the furnace is separated from the pass line and interference with the wire 10 which is fed along the pass line is not occurred, with a moving device 34 which is arranged between both guide rails 32, 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire drawing apparatus, and more particularly to a wire drawing apparatus capable of selectively performing warm drawing and cold drawing of a wire.

[0002]

2. Description of the Related Art As shown in FIG. 5, a wire drawing apparatus for wire-drawing a wire such as a special alloy or an alloy steel with a die is used for a wire rod.
A heating furnace 16 and a die 18 are arranged in series between a supply reel 12 wound with a required diameter and a winding drum 14 for winding the processed wire 10. And
The wire rod 10 drawn from the supply reel 12 and inserted into the heating furnace 16 and the die 18 is wound on the winding drum 1.
By forcibly winding at 4, the wire 10 annealed in the heating furnace 16 is drawn by a die 18.

[0003] In difficult-to-machine materials such as the above-mentioned special alloys and alloy steels,
The wire rod 10 before being inserted into the die 18 is heated or annealed in advance in the heating furnace 16 so that the wire drawing can be easily performed. However, there is a case where cold drawing is required. In this case, a warm drawing device provided with the heating furnace 16 and a cold drawing device not provided with the heating furnace 16 are separately provided. It may be installed, but there are problems that the cost increases and a large installation space is required.

[0004]

When cold drawing is performed by the warm drawing apparatus, the heating furnace 16 is cooled, and the wire 10 is passed through the furnace. Cold wire drawing can be performed without changing the feeding route. However, in this case, it is pointed out that it takes time to heat the furnace 16 to the required temperature in order to perform the warm drawing again after the heating furnace 16 is cooled, and that the loss time is increased and the production efficiency is reduced. Repetition of the operation of cooling and heating the heating furnace 16 also has a disadvantage that the energy efficiency becomes extremely low.

Therefore, as shown in FIG. 6, the wire 10 drawn from the supply reel 12 is fed through a plurality of guide members 20 through a path bypassing the heating furnace 16 and then inserted into a die 18. It has been proposed to perform cold drawing without cooling the heating furnace 16. However, in this case, it is pointed out that the feeding route of the wire 10 is meandered immediately before the die 18, and the wire 10 guided by the guide member 20 is easily damaged. Further, there is also a problem that the guide member 20 is unevenly worn in a short period of time and cannot be guided well. The heating furnace 16 and the die 18
If the wire rod 10 is largely separated, the meandering of the wire rod 10 can be relaxed. However, at this time, the entire drawing apparatus becomes long and the installation space becomes large. The temperature of the passed wire 10 is
8 has a disadvantage that it is greatly reduced before being inserted.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems inherent in the prior art, and has been proposed in order to solve the problem in a suitable manner. It is an object of the present invention to provide a wire drawing apparatus capable of selecting a warm wire drawing and a cold wire drawing and performing a wire drawing operation smoothly without any problem.

[0007]

In order to overcome the above-mentioned problems and achieve the intended object, a wire drawing apparatus according to the present invention comprises a die through which a wire drawn from a supply source is inserted, and a wire drawn from the die. In a wire drawing apparatus that is disposed downstream in the feeding direction and that includes a winding unit that forcibly winds the wire, a path line to a die of a wire drawn from a supply source is provided on an upstream side of the die. A heating furnace arranged movably between a heating position aligned to allow the passage of the wire and a retracted position separated from the pass line and not interfering with the wire fed along the pass line; and The heating furnace comprises moving means for moving between a heating position and a retreat position, and when the wire is warm drawn, the heating furnace is moved to the heating position and the wire is passed through the heating furnace. Later through the dies,
When the wire is cold drawn, the heating furnace is moved to a retreat position, and the wire is inserted into a die without passing through the heating furnace.

In order to achieve the above object, a wire drawing apparatus according to another invention of the present application comprises a heating furnace for heating a wire drawn from a supply source, a die into which the wire is inserted, and a wire fed from the die. And a winding means for forcibly winding the wire rod, wherein the wire rod is separated from a pass line of the wire rod with respect to the heating furnace between the supply source and the heating furnace. A guide member, a die and a winding means are disposed, a first position at which the dies are aligned with a pass line of the wire rod with respect to the heating furnace, and the guide member is separated from the pass line and through the guide member. A base movably disposed between a second position at which the dies are aligned with a feed path of the wire to be fed;
Moving means for moving between the position and the second position. When the wire is to be warm drawn, the base is moved to the first position, and after passing the wire through the heating furnace, When the wire is inserted and cold drawn, the base is
The wire rod guided by the guide member is inserted into a die without passing through a heating furnace.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a wire drawing apparatus according to the present invention. The same members as those already described in the wire drawing apparatus described with reference to FIGS. 5 and 6 are denoted by the same reference numerals.

[0010]

FIG. 1 is a schematic structural view showing a wire drawing apparatus according to a first embodiment. A supply reel 12 as a supply source in which a wire 10 is wound with a required diameter is provided on a supply stand 22. It is designed to be freely rotatable. Downstream of the supply stand 22 in the wire feeding direction, a heating furnace 16, a die 18, and a winding drum 14 as winding means are arranged in series. The winding drum 14 includes a wire drawing machine 24 having a motor (not shown).
By rotating the take-up drum 14 by a motor, the wire 10 continuously drawn from the supply reel 12 and continuously inserted into the heating furnace 16 and the die 18 is forcibly wound. It is configured to take.
The die 18 and the winding drum 14 are connected to the wire drawing machine 2.
4 are commonly arranged on the base 26.

A first guide 28 and a second guide 30 are provided between the supply stand 22 and the heating furnace 16, and the wire 10 drawn from the supply reel 12 is provided.
Is configured to be guided to the heating furnace 16 or the die 18 via the first guide 28 and the second guide 30. The second guide 30 is located on an extension of the pass line of the wire 10 with respect to the die 18 disposed on the base 26, and the wire 1 guided through the second guide 30 is provided.
0 is set so as to be linearly inserted into the die 18.

As shown in FIG. 1, the heating furnace 16 is slidably mounted on a pair of guide rails 32, which are spaced apart from each other in a wire feeding direction and extend in a direction orthogonal to the feeding direction. The heating furnace 16 is configured to be moved along the guide rails 32 by a moving device 34 disposed as a moving means disposed between the guide rails 32. The moving device 34 includes a rotatable screw shaft 36 extending between and parallel to the two guide rails 32, 32,
The screw shaft 36 is basically constituted by a motor 38 for rotating the screw shaft 36 in the forward and reverse directions, and the screw shaft 36 is screwed into a nut (not shown) provided in the heating furnace 16. Then, by rotating the screw shaft 36 in the forward and reverse directions by the motor 38, the heating furnace 16 is aligned with the pass line between the second guide 30 and the die 18 in the heating position allowing the passage of the wire 10 (FIG. 1) and a retreat position which is separated from the pass line and does not interfere with the wire 10 fed along the pass line.
(FIG. 2).

[0013]

Next, the operation of the wire drawing apparatus according to the first embodiment will be described. First, when warm drawing is performed by the apparatus, the motor 38 is driven to rotate the screw shaft 36 in a predetermined direction, and the heating furnace 16 is moved to the heating position shown in FIG. And
The wire rod 10 drawn from the supply reel 12 is set on the winding drum 14 while being wound around the first guide 28 and the second guide 30 and inserted through the heating furnace 16 and the die 18 positioned at the heating position. The heating furnace 16
Is heated to a required temperature, and the winding drum 14 is heated.
Is forcedly rotated, the wire 10 drawn from the supply reel 12 is annealed in the process of passing through the heating furnace 16 and then inserted into the die 18 to achieve a smooth wire drawing. Then, the wire rod 10 after the wire drawing is wound on the winding drum 14.

Next, when cold drawing is performed by the drawing apparatus, the motor 38 is driven to rotate the screw shaft 36 in a predetermined direction, and the heating furnace 16 is moved to the retracted position shown in FIG. And positioning. Then, the wire rod 10 drawn from the supply reel 12 is set on the winding drum 14 in a state of being wound around the first guide 28 and the second guide 30 and directly inserted into the die 10. In this state, the winding drum 1
By forcibly rotating the wire 4, the wire 10 drawn from the supply reel 12 passes through the outside of the heating furnace 16, is inserted into the die 10 without being heated, and wire drawing is achieved. Then, the wire rod 10 after the wire drawing is wound on the winding drum 14.

As described above, in the wire drawing apparatus according to the first embodiment, since the heating furnace 16 is configured to be movable between the heating position and the retracted position, the warm drawing can be performed while the heating furnace 16 is maintained in the heated state. Wire and cold drawing can be selected and performed. That is, since there is no need to repeat cooling and heating of the heating furnace 16, it is possible to suppress a decrease in manufacturing efficiency and a decrease in energy efficiency. In addition, since the feed route of the wire 10 from the second guide 30 to the die 18 is not changed, the feed route of the wire 10 is meandered, so that scratches and uneven wear of the guide member occur. There is no.

[0016]

FIG. 3 is a schematic diagram showing a wire drawing apparatus according to a second embodiment. In the first embodiment, the heating furnace 16 is moved. In the example, by moving the wire drawing machine 24, it is configured such that warm drawing and cold drawing can be easily selected. In the second embodiment, only components different from those of the first embodiment will be described.

The base 26 of the wire drawing machine 24 on which the dies 18 and the winding drum 14 are disposed is separated from the wire feeding direction and extends in a direction perpendicular to the feeding direction, as shown in the drawing. The base 26 is slidably mounted on a pair of guide rails 40, 40, and the base 26 is provided between the guide rails 40, 40 and has a moving device (moving device) having the same configuration as that of the first embodiment. (Means) 42 are configured to be moved along the guide rails 40, 40. The first guide 28 functions as a guide member, and is disposed at a position separated from a pass line of the wire 10 with respect to the heating furnace 16 disposed at a fixed position. The second guide 30
Is disposed at a position where the wire 10 guided through the first guide 28 is linearly guided to the heating furnace 16.

The base 26 is moved by a motor 38 to the base 2.
By rotating a screw shaft 36, which is screwed into a nut (not shown) of No. 6 in the normal and reverse directions, the wire 10 guided through the second guide 30 passes through the heating furnace 16 with a pass line and a die. And a second position (FIG. 3) where the dies 18 are aligned with the feeding path of the wire 10 which is separated from the pass line and fed through the first guide 28. 4). The die 18 on the base 26 positioned at the second position
The wire 10 inserted through the heating furnace 16 is supplied to the outside of the heating furnace 16.

[0019]

Next, the operation of the wire drawing apparatus according to the second embodiment will be described. First, when warm drawing is performed by the apparatus, the motor 38 is driven to rotate the screw shaft 36 in a predetermined direction, and the base 26 is moved to the first position shown in FIG. Then, the wire rod 10 drawn from the supply reel 12 is wound around the first guide 28 and the second guide 30, and is set on the winding drum 14 in a state of being passed through the heating furnace 16 and the die 18. With the heating furnace 16 heated to a required temperature,
By forcibly rotating the winding drum 14, the wire 10 drawn from the supply reel 12 is heated by a heating furnace 16.
After being annealed in the process of passing through, the wire is inserted into the die 18 to achieve smooth wire drawing. Then, the wire rod 10 after the wire drawing is wound on the winding drum 14.

Next, when cold drawing is performed by the drawing apparatus, the motor 38 is driven to rotate the screw shaft 36 in a predetermined direction, and the base 26 is moved to the second position shown in FIG. Move and position. Then, the wire rod 10 drawn from the supply reel 12 is set on the winding drum 14 in a state of being wound around only the first guide 28 and inserted through the die 18. By forcibly rotating the winding drum 14 in this state, the wire rod 10 drawn from the supply reel 12 is rotated.
The wire is passed through the die 18 without being heated by passing through the outside of the heating furnace 16 and the wire drawing is achieved. Then, the wire rod 10 after the wire drawing is wound on the winding drum 14.

As described above, in the wire drawing apparatus according to the second embodiment, the wire rod 10 having passed through the heating furnace 16 is linearly inserted into the die 18 through the base 26 provided with the die 18 and the winding drum 14. Is configured to be movable between a first position to be moved and a second position in which the wire 10 fed outside the heating furnace 16 is linearly inserted into the die 18.
Can be performed by selecting between warm drawing and cold drawing while maintaining the heating state. That is, similarly to the first embodiment, it is not necessary to repeat cooling and heating of the heating furnace 16, so that it is possible to suppress a decrease in manufacturing efficiency and a decrease in energy efficiency. Further, even when cold drawing is performed, since the wire 10 does not meander immediately before the die 18, scratches and uneven wear of the guide member due to the meandering of the wire 10 occur. Never.

In the first and second embodiments, a device having a combination of a screw shaft and a motor has been described as a moving device for moving a heating furnace or a base. However, the present invention is not limited to this. is not. For example, a configuration in which a pinion meshing with a rack provided in the heating furnace or the base is rotated by a motor, or a configuration in which the heating furnace or the base is directly moved by a cylinder can be appropriately adopted. Various furnaces such as a gas furnace and an electric furnace can be appropriately used as the heating furnace.

[0023]

As described above, according to the wire drawing apparatus of the present invention, by moving the heating furnace or the base on which the dies and the winding means are provided, warm drawing and cold drawing can be performed. Lines can be selected easily. Further, since it is not necessary to cool or reheat the heating furnace, it is possible to prevent a reduction in production efficiency and a decrease in energy efficiency. Furthermore,
Since the wire does not meander immediately before the die, there is no occurrence of scratches or uneven wear of the guide member due to the meandering of the wire.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a wire drawing apparatus according to a first embodiment of the present invention with a heating furnace positioned at a heating position.

FIG. 2 is a schematic configuration diagram showing the wire drawing apparatus according to the first embodiment of the present invention in a state where a heating furnace is positioned at a retracted position.

FIG. 3 is a schematic configuration diagram showing a wire drawing apparatus according to a second embodiment of the present invention with a base of the wire drawing machine positioned at a first position.

FIG. 4 is a schematic configuration diagram illustrating a wire drawing apparatus according to a second embodiment of the present invention in a state where a base of the wire drawing machine is positioned at a second position.

FIG. 5 is a schematic configuration diagram showing a conventional wire drawing apparatus in a state where warm drawing is performed.

FIG. 6 is a schematic configuration diagram showing a conventional drawing apparatus in a state where cold drawing is performed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wire rod 12 Supply reel (supply source) 14 Winding drum (winding means) 16 Heating furnace 18 Dice 26 Base 28 First guide (guide member) 34 Moving device (moving device) 42 Moving device (moving device)

Claims (2)

[Claims] A die (18) through which a wire (10) drawn from a supply source (12) is inserted, and a wire (10) disposed downstream of the die (18) in a wire feeding direction. And a winding means (14) for forcibly winding the wire (10), on the upstream side of the die (18), the wire (10) drawn from the supply source (12) to the die (18). Align the wire with the pass line
A heating furnace (16) movably arranged between a heating position allowing passage of (10) and a retracted position which does not interfere with the wire (10) fed along the pass line away from the pass line. )
Moving means (34) for moving the heating furnace (16) between a heating position and a retreat position, and heating the heating furnace (16) when warm drawing the wire (10). The wire (10) is moved to the position, the wire (10) is passed through the heating furnace (16), then inserted into the die (18), and when the wire (10) is cold drawn, the heating furnace (16) is used. Move to the retracted position and move the wire
A wire drawing device characterized in that the wire drawing device (10) is configured to be inserted into a die (18) without passing through a heating furnace (16). 2. A heating furnace (16) for heating a wire (10) drawn from a supply source (12), and a die (1) through which the wire (10) is inserted.
8) and a winding means (14) disposed downstream of the die (18) in the wire feeding direction and forcibly winding the wire (10). A guide member (28) disposed between the heating furnace (16) and the heating furnace (16) at a position separated from the pass line of the wire (10) with respect to the heating furnace (16); A removing means (14) is provided, and a die (18) is provided on a pass line of the wire rod (10) to the heating furnace (16).
And a second position where the dies (18) are separated from the pass line and are aligned with the feed path of the wire (10) fed through the guide member (28). And a moving means (42) for moving the base (26) between a first position and a second position, wherein the wire (10) is heated. In case of wire drawing, place the base (26) first.
When the wire (10) is moved to the position, the wire (10) is passed through the heating furnace (16) and then inserted into the die (18), and when the wire (10) is cold drawn, the base (26) is The wire drawing device is configured to move to the second position and to insert the wire (10) guided by the guide member (28) through the die (18) without passing the wire (10) through the heating furnace (16). apparatus.