JP4571655B2 - Wire rod end die drawing device and wire rod end die passing device - Google Patents

Description

  In continuous wire drawing using a plurality of dies for a metal wire, a die drawing device that draws a wire end passed through the die for a predetermined length, and when no wire is passed through the die, the wire is first routed The present invention relates to a device for processing a wire end and a device for passing a wire end die including the die drawing device.

  Continuous wire drawing of metal wire is usually performed by using a wire drawing machine equipped with a plurality of die holders and a capstan or cone provided between the die holders, winding the wire around the capstan, and then passing the die to the next capstan. The wire is drawn in sequence by repeatedly drawing the wire rod with a plurality of dies. However, in order to perform this wire drawing, it is necessary to wire the wire in advance to a plurality of dies. For this reason, first, the end of the wire is thinned and then drawn, and the wire is passed through the first die. In the past, it has been carried out by the following method.

  One method is to use frictional heat generated between the fixture and the wire after the wire diameter is about 1.3 mm or less and the middle of the gripped wire is hooked on the fixture and the wire is slid with the fixture. The wire is passed through the die by heating and softening the wire at the same time with a tensile force.After that, the die is hooked on a die fixing jig, and the wire is pulled by a predetermined length to the next cone manually. It is a method of line.

  However, this method has a large work load because the work of sliding with a fixing metal fitting for thinning the wire and the work of pulling out to a predetermined length after passing through the tip of the wire are mainly performed manually. If the wire diameter of the wire is increased, the load of this wiring work is further increased. In addition, since the thinned wire portion is heated and its mechanical strength is reduced, when the portion is gripped and pulled out for a predetermined length, the wire is broken if the strength is less than the pulling force. There is a problem that it cannot be removed. As described above, the sliding operation of the wire and the drawing operation of a predetermined length are problematic in terms of safety because they involve an unexpected disconnection of the wire.

  The above-mentioned method of thinning a wire by sliding heating and drawing it to a predetermined length is very difficult to perform by human power, particularly when the wire diameter of the carbon steel wire is 1.3 mm or more. For this reason, there is a case where a method is adopted in which the butt stepped portion is smoothed with a file or the like and then pulled out after butt welding with a wire to be drawn having a diameter smaller than the die diameter. However, even in this method, since the butt portion is heat-treated, there is a possibility that the mechanical strength may be lowered, and the file hooking must be performed carefully so as to withstand the pulling force, which requires work and labor. It was.

  And as a method generally used in a wire rod having a wire diameter of about 1.3 mm or more, the wire rod is inserted into a rolling roller die called a pointing machine, the wire rod end is thinned, and then the wire rod is inserted into the die. There is a method in which a terminal is passed through and pulled out from a die holder to a capstan using the power of a capstan using a pulling jig and is connected.

  However, this method requires an expensive pointing machine, and in order to reduce the diameter while keeping the end of the wire rod in a circular shape with a rolling roller, the wire end is rotated while inserting the end of the wire into the rolling roller. These operations require extremely skill because they are inserted and require repeated operations.

  The problem to be solved by the present invention is to provide an apparatus that can be pulled out safely and easily without a large labor load in the work of drawing the wire tip to a predetermined length after passing through the die. is there.

The present invention has been made to solve the above problems, and has an inlet larger than the wire diameter of the wire to be processed, and forms a linear shape that gradually decreases in diameter as it goes deeper from the inlet. A wire end insertion portion in which a hole is formed, a presser portion arranged to face the wire end insertion portion with a predetermined interval, and wound between the drive portion and the support portion within the interval therebetween. It consists of a belt sander part that rotates with a sand belt inserted, and the linear hole has a wire rod protruding release part in the axial direction of the wire on the side facing the holding part, and the sand belt rotates. A wire end processing apparatus for wire drawing, characterized in that the wire end that protrudes from the release portion is cut into contact with the side surface of the wire, and the wire end is sequentially reduced in the length direction. Die diameter wire rod end An apparatus for pulling out a predetermined length by a die after being inserted into a hole, comprising a die fixing portion, a rail portion, and a pulling drive portion provided in a gantry, and a wire rod terminal gripping jig provided on the rail portion A drive connecting portion that is arranged to be movable along the rail, and the wire rod end holding jig has a jig that holds the wire rod end with respect to the die fixing portion, and is moved along the rail by the pulling drive portion. A wire terminal die passing device having a wire terminal die drawing device characterized by comprising:
In addition, this invention can be characterized by the said releasing part of the said wire rod terminal processing apparatus for wire drawing being inclined and arrange | positioned with respect to the drive direction of the said sand belt.

  Conventionally, it is possible to omit the work of pulling the wire to a predetermined length by hooking the die to the die fixing jig, which has been a heavy work load in the process of passing the wire through the die. Through processing can be performed.

  Furthermore, according to the present invention, even when the wire terminal is grasped and pulled out during the wire passing work, the wire can be efficiently passed without causing disconnection.

  Here, first, a specific form of the second invention will be described. An apparatus for sequentially reducing the diameter in the length direction of the wire terminal comprises a wire terminal insertion portion, a presser portion, and a belt sander. Has an entrance with a diameter larger than the wire diameter of the wire to be processed on the front surface, and the diameter gradually decreases as it goes deeper than this, and the release part protrudes in the longitudinal direction of the wire at the lower surface of the wire terminal insertion portion It is provided with the hole which has. The presser portion is arranged to face the lower surface of the wire terminal insertion portion with a predetermined distance and is fixed integrally with the wire terminal insertion portion.

  The belt sander includes a driving unit, a supporting unit, and a sand belt suspended from the driving unit, and the sand belt is rotated by the driving device. The drive unit and the support unit are coupled via a coupling unit. A part of the sand belt is disposed in a gap formed between the lower surface of the wire terminal insertion portion and the presser portion with the sand surface facing the lower surface of the wire terminal insertion portion. Further, the belt sander connecting portion and the presser portion are connected and fixed.

  Next, a method for sequentially reducing the diameter of wire drawing ends in the length direction according to this apparatus will be described. First, the belt sander is driven, and the sander belt continuously connects the lower surface of the wire end inserting portion and the holding portion. Let it run. Next, the wire end is inserted into the hole from the inlet, but since this hole is gradually reduced in diameter as it goes deeper, a part of the inserted wire protrudes outside from the open part on the lower surface of the wire end insertion part, and this part Is scraped by the traveling sander belt. In that case, it can grind | polish uniformly in a wire peripheral direction by inserting it, rotating a wire. Then, by sequentially inserting and polishing the wire end to the back of the insertion hole, the wire end can be finally processed into a shape that is successively reduced in the length direction.

  In the above wire rod end processing method and processing apparatus for wire drawing, the work is almost automatically performed by machine work, so that workability is improved unlike conventional manual work. In addition, the work efficiency has been further improved.

  Furthermore, the specific form of drawing the predetermined length after inserting the end portion of the apparatus of the first invention, that is, the end of the wire rod having a reduced diameter into the die hole, has the following configuration. The gantry includes a die fixing portion, a rail portion, and a pulling drive portion, and a wire terminal gripping jig is disposed on the rail portion so as to be movable on and off the rail. The wire terminal gripping jig has a jig for gripping the wire terminal on the surface of the die fixing part, and is provided with a drive connecting part for moving in the direction of the drive part by the pulling drive part.

  For this reason, the wire rod end inserted into the die hole fixed to the fixed portion grips the tip of the wire rod by the wire rod end holding jig, and then moves on the rail by the pulling drive portion. A wire will be passed through the hole. Since this device is not a conventional manual method, the working environment is extremely improved and the workability is improved.

  Hereinafter, the first and second inventions of the present invention will be described in more detail with reference to examples. First, FIG. 1 is an overall view showing a processing apparatus for a wire end that sequentially reduces the diameter of the wire end in the length direction, and FIG. 2 is a partial exploded view of the main part thereof.

  In the figure, reference numeral 1 denotes a wire end processing apparatus, which includes a wire end inserting portion 2, a presser portion 3, and a belt sander 4. The wire end insertion portion 2 is provided with a hole 21, and this hole 21 has an inlet having a diameter larger than the wire diameter of the wire to be processed on the front surface of the wire end insertion portion 2, and the diameter gradually decreases as it goes deeper. In addition, a release portion 23 in which the hole 21 is released in the longitudinal direction is formed on the lower surface 22 of the wire rod end insertion portion 2. The groove diameter at the tip of the hole 21 is about half of the groove diameter at the inlet. The shape of the hole 21 may be V-shaped or semi-circular, and when the wire to be polished is disposed in the hole 21, from the lower surface 22 of the wire terminal insertion portion 2 toward the tip sequentially from the inlet of the hole 21. The hole 21 and the release portion 23 are provided so that the amount of protrusion is large. The presser portion 3 is disposed to face the lower surface 22 of the wire terminal insertion portion 2 with a predetermined interval, and is fixed to the wire terminal insertion portion 2.

  The belt sander 4 includes a drive unit 41, a support unit 42, and a sand belt 43 suspended from them. The drive unit 41 and the support unit 42 are connected by a connecting unit 44. The sand belt 43 is disposed in a gap formed between the lower surface 22 of the wire rod terminal insertion portion 2 and the presser portion 3 with a part of the belt facing the lower surface 22 of the wire rod end insertion portion 2 with a sand surface thereof. Further, the belt sander connecting portion 44 and the presser portion 3 are connected and fixed.

  The method of sequentially reducing the diameter of the wire end using the processing device that sequentially reduces the diameter in the length direction will be described. The belt sander 4 is driven, and the sand belt 43 is connected to the lower surface 22 of the wire end insert portion 2. The gap between the presser portions 3 is continuously run. Next, the wire rod end is inserted into the insertion hole 21, and since the diameter gradually decreases from the insertion hole 21 toward the back, a part of the inserted wire rod protrudes from the release portion 23 on the lower surface 22 of the wire rod end insertion portion 2. As a result, the protruding portion is scraped by the sand belt 43 that travels. In that case, it can grind | polish uniformly in a wire peripheral direction by inserting it, rotating a wire. Then, by sequentially inserting the wire rod to the depth of the insertion hole 21 and polishing the wire rod, the wire rod terminal can be finally processed into a shape whose diameter is sequentially reduced in the length direction.

  FIG. 3 is an overall view showing a die hole drawing apparatus for a wire rod according to a third aspect of the invention, and FIG. 4 is a partially exploded view thereof. In other words, the wire rods that have been reduced in length in the length direction using the above-described wire rod end processing apparatus are passed through the die, and after inserting the wire rod end into the die hole, a predetermined length is pulled out. The apparatus has the following configuration.

  In the drawing, reference numeral 5 denotes a drawing apparatus, and the drawing apparatus 5 includes a gantry 6, a die fixing portion 7 provided on the gantry 6, a rail portion 8, a wire terminal gripping jig 9, and a drawing drive portion 10. A wire rod end holding jig 9 is arranged on the rail portion 8 so as to be movable back and forth on the rail 8. The die fixing portion 7 includes a die installation groove 71, a fixing wall 72 for fixing the die when the wire is drawn, and a wire supply chamber 73. The wire supply chamber 73 is used to supply a lubricant when applying a lubricant in the drawing process. Functions as a saucer. The rail portion 8 is provided from the die fixing portion 7 to the pulling drive portion 9 in substantially the same direction as the wire drawing direction.

  The wire terminal gripping jig 9 is composed of a grip 91, a travel unit 93, and a drive suspension unit 94 on a carriage 91. The grip 92 is composed of two grooved gripping plates. By being provided on the side wall and screwed through the screw groove, the wire terminal can be gripped and fixed to the carriage 91. Further, by providing a wire rod passage hole on the rear wall surface of the carriage 91, the wire rod can be gripped at an arbitrary position of the wire rod end from the die of the wire rod that has been diced. This means that when drawing a wire longer than the length of the rail with a die, when the carriage 91 is returned to the die part and grips the wire in the second and subsequent drawing, the wire already drawn is placed behind the carriage 91. It can be sent out.

  The pulling drive unit 10 includes a drive connection unit 101 and a drive unit 102, one end of the drive connection unit 101 is connected to the drive suspension unit 94 of the wire terminal gripping jig 9, and the other end is locked to the drive unit 103. In this embodiment, the drive connecting portion 101 is a chain, and the drive portion 102 includes a gear and a lever that rotates the gear. By engaging the chain 101 with the gear and rotating the gear, the wire terminal gripping jig 9 is moved from the die fixing portion 7 along the rail portion 8 to the drawing driving portion 10 to draw the wire. Here, the driving force for rotating the gear can be changed by changing the length of the lever for rotating the gear.

  In the present invention, it is preferable to continuously use the wire end processing apparatus 1 for sequentially reducing the diameter of the wire end in the length direction and the wire rod drawing apparatus 5 for a predetermined length with a die. By providing the two apparatuses, two types of processing can be performed at the same place. In addition, by providing these devices on a movable carriage, the entire device can be moved, and wire rod dies can be threaded at different locations with one combination device.

FIG. 1 is an overall view showing a processing apparatus for a wire terminal according to a second aspect of the present invention for sequentially reducing the diameter of a wire terminal in the length direction. FIG. 2 is a partially exploded view of the main part of the apparatus of FIG. FIG. 3 is an overall view showing a die hole drawing apparatus for a wire according to a third aspect of the invention. 4 is a partially exploded view of the main part of the apparatus of FIG.

Explanation of symbols

1 ... Wire end processing equipment,
2 ... Wire terminal insertion part,
21 ... Wire end insertion hole,
22... Bottom surface of wire rod end insertion part,
23 .. Opening part of wire rod end insertion hole,
3 ... Presser part,
4 ... Belt sander,
41 ... Drive unit,
42 ... support part,
43 Sand belt,
44 ... Connection part,
5. Drawing equipment,
6 ... Stand,
7. Die fixing part,
71 Die installation groove,
72 ... Die fixed wall,
73 ... Wire supply room,
8 ... Rail part,
9 ... Wire terminal gripping jig,
91...
92 ... the gripping part,
93 ... Running section,
94 Drive suspension,
10 ... Pulling drive,
101 ... drive connection part,
102 ... drive unit,
103 ··· Drawing drive unit.

Claims (2)

A wire rod end insertion portion having an entrance larger than the wire diameter of the wire to be processed and having a linear hole that gradually decreases in diameter as it goes deeper from the entrance, and a predetermined end in the wire end insert portion The presser part disposed opposite to each other with an interval, and a belt sander part that rotates by inserting a sand belt wound between the drive unit and the support unit into the interval between the two, The wire-shaped hole is formed with a wire rod protruding release portion in the axial direction of the wire on the side facing the presser portion, and when the sand belt rotates, it comes into contact with the side surface of the wire rod protruding from the release portion and cuts it. A wire rod terminal processing device for wire drawing, characterized by sequentially reducing the diameter of the wire rod terminal in the length direction;
A device that sequentially draws a wire end, whose diameter has been reduced in the length direction, into a die hole, and then pulls out a predetermined length by the die, and includes a die fixing portion, a rail portion, and a drawing drive portion provided in the gantry. A wire rod end holding jig is disposed on the rail portion so as to be movable along the rail. The wire rod end holding jig has a jig for holding the wire rod end with respect to the die fixing portion, and the pulling drive. A die pulling device for a wire rod terminal, characterized in that it comprises a drive connecting portion that is moved along the rail at the portion;
A device for passing through a wire terminal die. The wire rod end die passing device according to claim 1, wherein the release portion of the wire rod end processing device for wire drawing is disposed to be inclined with respect to a driving direction of the sand belt.

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