JP3186881U - Wire drawing machine in wire drawing equipment - Google Patents

Abstract

An object of the present invention is to draw a wire having a predetermined diameter using a bonder substitute lubricant and to produce a thick, uniform and strong lubricating film formed on the wire.
A wire drawing machine 6 includes a die box 7 and a coating box 8 provided immediately after the die box. An insertion port 71a and a discharge port 72a for the linear material 1 to be drawn are formed at the center portions of the front wall 71 and the rear wall 72 of the die box. In the die box, a drawing die 9 for drawing a wire with a predetermined diameter is provided on the discharge port side, and a bonder substitute material lubrication is formed on the front side of the drawing die with a viscous liquid in response to drawing heat to generate a lubricating film. First lubricating oil applying means 10 for applying oil to the linear material is provided. The application box 8 has second lubricating oil application means 15 for re-applying a bonder substitute lubricant that reacts with drawing heat and generates a lubricating film on the drawn lubricating film of the wire 1A. Provided.
[Selection] Figure 2

Description

  The present invention is a wire drawing machine in a wire drawing device, more specifically, a scale material is removed and a lubricant is applied to a linear material, and the linear material is drawn through a drawing die into a wire having a predetermined diameter. The present invention relates to a wire drawing machine in a wire drawing device.

  In general, when cold forging is performed with a forging machine using wire rods, the wire material rolled by a blast furnace manufacturer or the like is subjected to scale removal processing during rolling by pickling of a wire drawing device in a secondary processing manufacturer. After that, a lubrication film is generated by a bonder treatment, and thereafter, the wire is drawn to a predetermined finished wire diameter by a wire drawing machine equipped with a drawing die, and then the drawn wire is fixed to a certain length by the manufacturer. The supplied blank is cut into predetermined dimensions with a forging machine, and the cut blank is cold forged into a molded product such as a bolt or a nut with a punch and a die.

  By the way, according to the conventional wire drawing means using the above-mentioned bonder treatment, a chemical conversion is performed using a chemical to form a phosphate coating and a lubricant film called a metal soap lubricant treatment. Is necessary, and the length of the apparatus is long, and it is difficult to set conditions in the processing quality. In addition, the bonde treatment requires a large amount of waste water because it requires cleaning, and this treatment is also an environmental problem.

  In recent years, it has been proposed to use a bond substitute lubricating oil for the problem of the bond processing. In other words, the bond material substitute lubricant is applied to the linear material that has undergone the descaling process, and the linear material that has been subjected to the coating process is drawn by a wire drawing machine to have a predetermined diameter on which the lubricating coating is formed. Proposals have been made to obtain wire rods.

However, in the case of a wire obtained by drawing a linear material with a wire drawing machine using a bonder substitute lubricant, the linear material passes through a drawing die of the wire drawing machine and is drawn to a wire having a predetermined diameter. When the lubricating oil has a low viscosity, most of the lubricating oil falls off the surface of the wire. For example, the lubricating film formed on the surface of the wire has a very thin film thickness of 0.5 g / m ^2. The uniformity was also poor. As a result, when it is adopted for cold forging, the lubrication function necessary for cold forging, that is, the effect of suppressing heat generation and extending the die life is not obtained.

  Accordingly, the present invention provides a wire drawing device that can actively and thickly and uniformly generate a lubricating coating formed on a wire while being able to draw a wire having a predetermined diameter using a bonder substitute lubricant. The issue is to provide a wire drawing machine.

  In order to solve the above-described problem, the device according to claim 1 of the present application is directed to a wire material that has been subjected to a scale removal process and a lubricant application process, and is drawn into a wire having a predetermined diameter through a drawing die. A wire drawing machine in a wire drawing apparatus, wherein the wire drawing machine comprises a die box and a coating box connected immediately after the die box, and the die box is drawn to each central portion of its front wall and rear wall. An insertion port and a discharge port for the linear material to be wired are formed, and in the die box, a drawing die for drawing a wire of a predetermined diameter is provided on the discharge port side, and on the front side of the drawing die A first lubricating oil applying means for applying to the linear material a bonder substitute lubricating oil that uniformly generates a lubricating coating in response to drawing heat in a multi-viscous liquid is provided. A viscous liquid is drawn on the lubricating film of the coated wire. Wherein the second lubricating oil applying means for applying a bonderized alternative material lubricant evenly produce finished lubricating coating in response to heat again are provided.

  The invention according to claim 2 of the present application uses the first and second lubricant application tanks storing the bonder substitute lubricant as the first and second lubricant application means, and the linear material or the wire is first, The second lubricating oil application tank is constructed so as to be immersed in the lubricating oil by passing through the second lubricating oil application tank, and the second lubricating oil application tank in which the application box is integrally connected to the rear wall of the die box; An oil draining tank provided continuously behind the oil application tank to drop an excess oil film to form an appropriate film thickness and an oil sump tank provided continuously behind the oil draining tank are provided.

  According to the wire drawing machine of claim 1 of the present application, with the above-described configuration, it is possible to draw a wire of a predetermined diameter using a bonder substitute lubricant, and to positively apply a lubricating film formed on the wire. Thick, uniform and strong. In particular, using a bond substitute lubricant that produces a uniform lubricant film in response to the heat of drawing in a viscous liquid as a lubricating oil, the drawing that occurs when the linear material passes through the drawing die during wire drawing. A first reaction film is formed on the wire by the lubricating oil of the first lubricating oil applying means on the wire, and the second lubricating oil applying means of the second lubricating oil applying means is further utilized on the first reaction film by using the drawing heat immediately after the drawing. Since the second reactive coating film is additionally formed with the lubricating oil, the lubricating coating film can be positively and thickly and uniformly generated on the surface of the drawn wire. As a result, when it is adopted for cold forging while solving the problems in conventional bond processing, the lubrication function necessary for cold forging, that is, the effect of suppressing heat generation and extending the die life can be sufficiently exhibited. In addition, the lubricating coating produced on the surface of the wire exhibits an antirust effect and does not rust for several months.

  Further, as the first and second lubricating oil application means, the first and second lubricating oil application tanks storing the bonder substitute lubricating oil are used, and the linear material or the wire material is passed through the first and second lubricating oil application tanks. While being configured to be immersed in the lubricating oil by passing through, the application box is provided with a second lubricating oil application tank integrally connected to the rear wall of the die box, and the rear of the second lubricating oil application tank. If it is configured to have an oil drilling tank that forms a suitable film thickness by dropping an oil film and an oil sump tank connected to the rear of the oil drilling tank, a lubricating coating is obtained on the surface of the drawn wire. This is preferable because it can be generated accurately, uniformly and firmly in the film thickness.

It is a schematic explanatory drawing of the whole wire drawing apparatus provided with the wire drawing machine concerning this invention. It is a partially omitted front view of the wire drawing machine. It is a partially omitted plan view of the wire drawing machine.

  Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic explanatory diagram of the entire wire drawing apparatus S equipped with a wire drawing machine according to the present invention. 1 is an as-roll material rolled by a blast furnace maker or the like and put into a material coil stand 2 1 is a first straightening machine equipped with a straightening roller (not shown), 4 is a shot blast for removing the linear material scale (oxide film), and 5 is a straightening roller (not shown). The second straightening machine 6 is a wire drawing machine.
In the embodiment shown in the figure, the shot blast 4 is used as the scale removal processing of the linear material 1, but it may be performed by pickling processing.

  And the wire drawing machine 6 in the wire drawing apparatus S which consists of the above structure was comprised as follows.

  As shown in FIGS. 2 and 3, the wire drawing machine 6 includes a die box 7 and a coating box 8 that is integrally provided immediately after the die box 7.

  The die box 7 is formed with an insertion port 71a and a discharge port 72a for the linear material 1 that are drawn at the central portions of the front wall 71 and the rear wall 72 thereof. In the die box 7, a drawing die 9 for drawing a wire having a predetermined diameter is provided on the discharge port 72 a side, and the front side of the drawing die 9 reacts to drawing heat with a multi-viscous liquid. A first lubricating oil tank (first lubricating oil applying means) 10 is provided for applying to the linear material 1 a bond substitute material lubricating oil that uniformly generates a lubricating coating.

  The first lubricating oil tank 10 is formed with an inlet 11a and an outlet 12a of the linear material 1 drawn at the center portions of the front wall 11 and the rear wall 12, and the linear material 1 is the first when drawn. It passes while immersed in the lubricating oil stored in the lubricating oil tank 10. Rubber inlet plugs 13, 14 for preventing oil leakage are attached to the inlet 11 a and outlet 12 a portions of the first lubricating oil tank 10. The drawing die 9 is disposed so as to face the outlet 12a of the first lubricating oil tank 10, and extends through the first lubricating oil tank 10 to a wire rod 1A having a predetermined diameter for obtaining the linear material 1 to which the lubricating oil is applied. To line.

  Further, an oil recovery portion 73 is formed on the bottom surface of the die box 7 and a plurality of oil discharge ports 74... 74 are provided. As a result, the oil leaks out from the first lubricating oil tank 10 and the drawing die 9 and the like, and the lubricating oil falls into the oil collecting section 73. The lubricating oil that has fallen into the oil collecting section 73 passes through the discharge ports 74. Is returned to a storage tank (not shown) provided separately. And the lubricating oil in a storage tank is circulated and supplied to the 1st lubricating oil tank 10 and the 2nd lubricating oil tank 15 mentioned later by the appropriate circulation device which is not illustrated.

  On the other hand, the application box 8 is a multi-viscous liquid lubricant film that is integrally connected to the rear wall 72 of the die box 7 and drawn by the drawing die 9, and reacts to the heat of drawing. A second lubricating oil tank 15 that stores a bond substitute material lubricating oil that produces the same (the same lubricating oil in the first lubricating oil application tank 10), and an excess oil film that is connected to the rear of the second lubricating oil application tank 15 The oil drain tank 16 is provided with a rubber oil drain plug 17 which is formed to have an appropriate film thickness by dropping and an oil sump tank 18 connected to the rear of the oil drain tank 16.

  As the oil draining means, in addition to oiling to an appropriate film thickness using an oil drain plug 17 with a guide having a predetermined diameter made of a rubber material as shown in the figure, for example, an appropriate film thickness using a sponge, an internal winding brush or the like. You may make it oil.

  Oil drain ports 19, 20, and 21 are provided on the bottom surfaces of the second lubricating oil tank 15, the oil drain tank 16, and the oil sump tank 18, respectively. The oil leaked from the second lubricating oil tank 15, the oil drain tank 16, the oil sump tank 18 and the like by the oil discharge ports 19, 20, and 21 has been described above via the oil discharge ports 19, 20, and 21, respectively. It is returned to the storage tank and is circulated and supplied to the second lubricating oil tank 15 by an appropriate circulation device (not shown).

  Next, the operation of the wire drawing device S including the wire drawing machine 6 configured as described above will be described.

  As shown in FIG. 1, first, a linear material 1 such as an as-roll material put in a material coil stand 2 is stretched to the extent that it can pass through a shot blast 4 by a first straightening machine 3 and fed into the shot blast 4. Then, the scale attached to the surface of the linear material 1 is removed by the shot blasting 4 and the linear material 1 is fed to the second straightening machine 5 and fed into the die box 7 of the wire drawing machine 6.

  Next, the linear material 1 fed into the die box 7 passes through the first lubricating oil tank 10 in the die box 7 and is sent to the drawing die 9 in a state where the multi-viscous bonder substitute lubricant is applied. And it draws to the wire rod 1A of a predetermined diameter with the drawing die 9. At the time of wire drawing, drawing heat (30 ° C. to 80 ° C.) is generated due to resistance when the linear material 1 passes through the drawing die 9, and the first lubricating oil tank 10 is formed on the outer peripheral surface of the wire 1 A due to the influence of this drawing heat. The first reaction film with the lubricating oil is uniformly produced.

  Thereafter, the wire 1A, which has been drawn to generate the first reaction film, passes through the second lubricating oil tank 15 in the coating box 8 provided immediately after the drawing die 9, and is again coated with the multi-viscous bonder substitute lubricant. Is done. At this time, the applied lubricating oil reacts under the influence of the extraction heat, and a second reaction film is additionally generated by the lubricating oil in the second lubricating oil tank 10 on the first reaction film. As a result, it is possible to positively generate a lubricating coating having a sufficient thickness as required while using the bonder substitute lubricant.

At that time, since the oil drain tank 16 provided with the oil drain plug 17 is provided on the rear side of the second lubricating oil tank 15, the excess oil film is dropped through the oil drain plug 17 so as to be appropriate and uniform. It is possible to achieve a state of a sufficient film thickness. As a proper coating thickness is appropriate, for example ^{4g / m 2 ~10g / m 2} .

  Thereafter, the wire 1A that has passed through the oil sump tank 18 is coiled on a carrier at a speed of 50 to 100 m / min by a wire winding drum provided at the rear of the wire drawing machine 6. And after winding up, it stores for at least 1 hour or more, and a wax-like reaction film is further increased by extraction heat.

  As described above, according to the wire drawing machine described above, the lubricating coating is positively thickened and evenly and firmly applied to the surface of the wire 1A while drawing the wire 1A having a predetermined diameter using the bonder substitute lubricant. Can be generated.

  In particular, it is generated when the wire material 1 passes through the drawing die 9 at the time of wire drawing, using a bond substitute material lubricating oil which is a multi-viscous liquid as a lubricating oil and reacts with drawing heat to uniformly generate a lubricating film. A first reaction film made of the lubricating oil in the first lubricating oil tank 10 is generated on the wire 1A by the drawing heat, and the second heat is further applied to the wire by using again the drawing heat immediately after drawing on the first reaction film. By additionally generating the second reaction film by the lubricating oil in the oil tank 15, the lubricating film can be positively and thickly and uniformly generated on the surface of the drawn wire 1A. As a result, when it is adopted for cold forging while solving the problems in conventional bond processing, the lubrication function necessary for cold forging, that is, the effect of suppressing heat generation and extending the die life can be sufficiently exhibited. In addition, the lubricating coating produced on the surface of the wire 1A exhibits a rust preventive effect and does not rust for several months.

  In the above-described embodiment, the first and second lubricating oil application means are the first and second lubricating oil application tanks 10 and 15 storing the bonder substitute material lubricating oil, and the linear material or the wire material is the first. Although description has been given of the structure in which the lubricating oil is applied by being immersed in the lubricating oil through the first and second lubricating oil application tanks 10 and 15, the application means is not limited to this application means. May be applied by spraying a bond substitute lubricating oil on a linear material or wire. Moreover, in above-mentioned embodiment, it was set as the structure which can be combined with one storage tank and a suitable circulation device, using the same lubricating oil as the bond substitute material lubricating oil of the 1st, 2nd lubricating oil application tanks 10 and 15. However, the lubricating oil may be not particularly the same as long as it is a multi-viscous liquid and has a property of uniformly generating a lubricating coating in response to heat of drawing.

DESCRIPTION OF SYMBOLS 1 Wire-like material 1A Wire 7 Dice box 71 Front wall 71a Insertion port 72 Rear wall 72a Discharge port 8 Application box 9 Drawing die 10 First lubricating oil application means

Claims (2)

  A wire drawing machine in a wire drawing device that draws a linear material that has undergone descaling treatment and lubricating oil application treatment to a wire with a predetermined diameter through a drawing die, the wire drawing machine is a die box; With a coating box provided immediately after the die box, the die box is formed with an insertion port and a discharge port for a linear material drawn to each central portion of the front wall and the rear wall, In the die box, a drawing die for drawing a wire having a predetermined diameter is provided on the discharge port side, and a lubricant film is uniformly generated in response to drawing heat with a multi-viscous liquid on the front side of the drawing die. While the first lubricant application means for applying the bonder substitute lubricant to the linear material is provided, the application box reacts to the heat of drawing with a viscous liquid on the lubricant film of the drawn wire. Bonding substitute material that evenly produces a finished lubricating coating Drawing machine in the wire drawing device, characterized in that the second lubricant application unit means for applying a Namerayu again is provided.   As the first and second lubricant application means, the first and second lubricant application tanks storing the bonder substitute lubricant are used, and the linear material or the wire is passed through the first and second lubricant application tanks. The application box is connected to the rear wall of the die box integrally with the rear wall of the die box and the rear of the second lubricant application tank. The wire drawing apparatus according to claim 1, further comprising: an oil drilling tank that drops an appropriate oil film to form an appropriate film thickness; and an oil sump tank connected to the rear of the oil drilling tank. Machine.

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