Drying device for ultra-fine steel wire before high-speed heat treatment

Abstract

The present invention relates to a drying device used for ultra-fine steel wire before high-speed heat treatment, comprising a rectangular box, the two ends of which are respectively a front plate and a rear plate for wire feeding and wire discharge, a plurality of wire guide holes are symmetrically arranged on the front plate and the rear plate, and a heater is arranged at the bottom of the box, and the heater is located below the wire guide holes. The present invention utilizes a box with a heater to introduce the steel wire into the box from one end of the box, and then lead it out from the other end of the box after drying inside the box, and the moisture on the surface of the steel wire is dried by the high temperature inside the box, thereby ensuring that the surface of the steel wire is dry after it exits the box.

Description

Technical Field

[0001] The invention relates to a drying device used before high-speed heat treatment of ultra-fine steel wires. Background Art

[0002] At present, with the development of diamond wire (a kind of cutting wire) thinning, the specifications of electroplated diamond wire busbar are getting thinner and thinner. Similarly, the specifications of the raw material electroplating wire for manufacturing diamond wire busbar are also getting thinner and thinner. In order to stabilize the heat treatment process of steel wire, as the diameter of electroplated wire decreases, the heat treatment speed needs to be continuously improved. At present, the speed of the front heat treatment process of steel wire in the production of electroplated wire is controlled at 70-100m / min line speed, and before the steel wire enters the MF medium frequency thermal diffusion furnace, it is necessary to ensure that the steel wire is dry. Normally, there is a hot water wash before the steel wire enters the MF medium frequency thermal diffusion furnace. The steel wire is washed with 90℃ hot water, and the water-out steel wire can be dried instantly. However, as the steel wire continues to be thinner and the line speed continues to increase, after the steel wire is washed with hot water, it is impossible to ensure that the steel wire is dry when it enters MF. Therefore, it will cause the steel wire to be wet and close to MF, resulting in frequent MF failures. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a drying device for ultra-fine steel wire before high-speed heat treatment, which can quickly dry the moisture on the surface of the steel wire and ensure that the steel wire enters the MF medium frequency thermal diffusion furnace dry.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a drying device used for ultra-fine steel wire before high-speed heat treatment, comprising a rectangular box, the two ends of the box are respectively a front end plate and a rear end plate for wire feeding and wire output, a plurality of wire guide holes are symmetrically arranged on the front end plate and the rear end plate, and a heater is arranged at the bottom of the box, and the heater is located below the wire guide holes.

[0005] As a preferred solution, an air inlet is opened at the bottom of the box, and a plurality of air inlet fans are arranged on the air inlet. The heater includes a plurality of heating wires arranged in parallel, and the plurality of heating wires are connected to a power supply after being connected in parallel. The specifications of each heating wire are consistent, and the heating wire is directly opposite to the air inlet.

[0006] As a preferred solution, the front end plate and the rear end plate are respectively connected to air nozzles corresponding to the wire guide holes, and the air nozzles are located on the outside of the front end plate and the rear end plate. The air nozzle is provided with a conical through hole coaxial with the wire guide hole. The diameter of the end of the conical through hole connected to the wire guide hole is large, and the diameter of the end away from the wire guide hole is small. There are multiple spiral grooves on the inner wall of the conical through hole in a circumferential direction, and the grooves extend from one end of the conical through hole to the other end.

[0007] As a preferred solution, the air nozzle is threadedly connected to the wire guide hole.

[0008] As a preferred solution, the taper of the tapered through hole in the air nozzle is 5-12°, and the diameter of the small-diameter end of the tapered through hole is 1.2-1.5 times the diameter of the steel wire to be dried.

[0009] As a preferred solution, an air pressure sensor is provided inside the box, and the air pressure sensor is connected to a controller. Each of the air inlet fans is electrically connected to the controller via a frequency converter and is controlled by the controller.

[0010] As a preferred solution, the top plate of the box body is detachably connected to the front end plate or the rear end plate or the two side plates of the box body.

[0011] The beneficial effect of the present invention is that the present invention utilizes a box with a heater to introduce the steel wire into the box from one end, and then leads it out from the other end of the box after being dried inside the box, and the moisture on the surface of the steel wire is dried by the high temperature inside the box, thereby ensuring that the surface of the steel wire is dry after leaving the box.

[0012] The present invention further increases the flow speed of the hot air flow in the box by opening an air inlet at the bottom of the box and arranging an air inlet fan, thereby improving the drying effect on the steel wire and further ensuring that the high-speed moving steel wire can still be dried after quickly passing through the box. At the same time, the size of the box can be reduced, making the drying device of the present invention easier to assemble and use.

[0013] The present invention further arranges an air nozzle on the front end plate and the rear end plate of the box, and arranges a spiral groove on the inner wall of the air nozzle, so that the steel wire passes through the box through the air nozzle. Under the action of the air inlet fan, the interior of the box is under positive pressure, and high-strength airflow sprays outward through the air nozzle, forming a vortex under the guidance of the spiral groove, wrapping the steel wire in the center of the conical through hole of the air nozzle, thereby stabilizing the steel wire and preventing the steel wire from colliding with the air nozzle and causing damage to the outer wall.

[0014] The present invention further uses a controller and an air pressure sensor to monitor and control the air pressure in the box, effectively controlling the stability of the steel wire during movement, and avoiding scratches and damages caused by up and down fluctuations of the steel wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 is an electrical schematic diagram of the present invention;

[0018] Figure 1 and Figure 2In: 1. Box body, 101. Front end plate, 102. Rear end plate, 103. Top plate, 104. Side plate, 2. Wire guide hole, 3. Heater, 301. Heating wire, 302. Power supply, 4. Air inlet, 5. Air inlet fan, 6. Air nozzle, 7. Conical through hole, 8. Groove, 9. Air pressure sensor, 10. Controller, 11. Inverter, 12. MOS tube, 100. Steel wire. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1 and Figure 2 As shown, a drying device used for ultra-fine steel wire before high-speed heat treatment includes a rectangular box 1, the two ends of which are a front end plate 101 and a rear end plate 102 for wire feeding and wire outlet, a plurality of wire guide holes 2 are symmetrically arranged on the front end plate 101 and the rear end plate 102, and a heater 3 is arranged at the bottom of the box, and the heater 3 is located below the wire guide hole 2.

[0021] The bottom of the box body 1 is provided with an air inlet 4, and a plurality of air inlet fans 5 are arranged on the air inlet 4. The heater 3 includes a plurality of electric heating wires 301 arranged in parallel. Figure 2 As shown, a plurality of heating wires 301 are connected in parallel to a power source 302 , each heating wire 301 has the same specification, and the heating wire 301 is directly opposite to the air inlet 4 .

[0022] The front end plate 101 and the rear end plate 102 are respectively connected to air nozzles 6 corresponding to the guide wire holes 2. The air nozzles 6 are located on the outer sides of the front end plate 101 and the rear end plate 102. The air nozzles 6 are provided with a conical through hole 7 coaxial with the guide wire hole 2. The diameter of the end of the conical through hole 7 connected with the guide wire hole 2 is large, and the diameter of the end away from the guide wire hole 2 is small. There are multiple spiral grooves 8 on the inner wall of the conical through hole 7 in a circumferential direction, and the grooves extend from one end of the conical through hole 7 to the other end.

[0023] The air nozzle 6 is threadedly connected to the wire guide hole 2 for easy replacement.

[0024] The taper of the conical through hole 7 in the air nozzle 6 is 5-12 degrees, and the diameter of the small-diameter end of the conical through hole 7 is 1.2-1.5 times the diameter of the steel wire to be dried. According to actual measurements, the stability of the steel wire during movement is best when the conical through hole 7 is within this specification range.

[0025] An air pressure sensor 9 is provided inside the box body 1 , and the air pressure sensor 9 is connected to a controller 10 . Each of the air inlet fans 5 is electrically connected to the controller 10 via a frequency converter 11 and is controlled by the controller 10 .

[0026] The top plate 103 of the box body 1 is detachably connected to the front plate 101 or the rear plate 102 or the two side plates 104 of the box body 1, so that the top plate 103 can be opened to repair and replace the internal components of the box body 1, such as replacing the heating wire 301.

[0027] In order to better control the drying effect of the steel wire and effectively reduce energy consumption, in this embodiment, a MOS tube 12 is connected in series in the power supply circuit of the heater 3, and the control end of the MOS tube 12 is connected to the controller 10. The operator can control the duty cycle of the MOS tube 12 through the controller 10 according to actual needs to adjust the heating power of the heater 3, thereby improving the utilization rate of thermal energy and avoiding energy waste.

[0028] The working principle of the present invention is: Figure 1 and Figure 2 As shown, the steel wire 100 is Figure 1 Moving from the left side to the right side, the steel wire 100 enters the box body 1 through the air nozzle 6 on the front end plate 101, and then passes through the box body 1 through the air nozzle 6 on the rear end plate 102. The heater 3 located below the steel wire 100 generates heat to heat the box body 1, thereby increasing the temperature inside the box body 1. At the same time, the controller 10 controls the two air inlet fans 5 to rotate through the inverter 11, and the air inlet fans 5 blow air into the box body 1, blowing the heat on the electric heating wire 301 to the steel wire 100, accelerating the drying speed of the surface of the steel wire 100, so that the surface of the steel wire 100 is dried after passing through the box body 1. At the same time, the internal air pressure of the box body 1 is increased, and the internal gas of the box body 1 is sprayed outward through each air nozzle 6 under high pressure. The airflow forms a vortex under the guidance of the groove 8, and the steel wire 100 is wrapped in the center of the tapered through hole 7 of the air nozzle 6, thereby stabilizing the steel wire 100 and preventing the steel wire 100 from colliding with the air nozzle to cause damage to the outer wall.

[0029] The air pressure sensor 9 monitors the air pressure inside the box 1. When the air pressure inside the box 1 changes, the controller 10 controls the speed of the air inlet fan 5 to change synchronously according to the air pressure change to compensate for the air pressure change, thereby maintaining the stability of the air pressure inside the box 1, stabilizing the swirl at the air nozzle 6, and ensuring the stability of the steel wire 100 during its movement.

[0030] The above embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A drying device used for ultra-fine steel wire before high-speed heat treatment, characterized in that: The invention comprises a rectangular box (1), wherein two ends of the box (1) are a front plate (101) and a rear plate (102) for feeding and discharging wires, respectively; a plurality of wire guide holes (2) are symmetrically arranged on the front plate (101) and the rear plate (102); a heater (3) is arranged at the bottom of the box, and the heater (3) is located below the wire guide holes (2); an air inlet (4) is opened at the bottom of the box (1), and a plurality of air inlet fans (5) are arranged on the air inlet (4); the heater (3) comprises a plurality of electric heating wires (301) arranged in parallel; the plurality of electric heating wires (301) are connected to a power source (302) after being connected in parallel, and each electric heating wire (301) is connected to a power source (302) ... The specifications of the wires (301) are consistent, and the electric heating wire (301) is directly opposite to the air inlet (4); the front end plate (101) and the rear end plate (102) are respectively connected to air nozzles (6) corresponding to the wire guide holes (2), and the air nozzles (6) are located on the outside of the front end plate (101) and the rear end plate (102). The air nozzle (6) is provided with a conical through hole (7) coaxial with the wire guide hole (2), and the diameter of the end of the conical through hole (7) connected to the wire guide hole (2) is large, and the diameter of the end away from the wire guide hole (2) is small, and a plurality of spiral grooves (8) are evenly arranged on the inner wall of the conical through hole (7), and the grooves extend from one end of the conical through hole (7) to the other end.

2. The drying device according to claim 1, characterized in that: The air nozzle (6) is threadedly connected to the wire guide hole (2).

3. The drying device according to claim 1, characterized in that: The tapered through hole (7) in the air nozzle (6) has a taper of 5 to 12 degrees, and the diameter of the small-diameter end of the tapered through hole (7) is 1.2 to 1.5 times the diameter of the steel wire to be dried.

4. The drying device according to claim 1, characterized in that: An air pressure sensor (9) is arranged inside the box (1), and the air pressure sensor (9) is connected to a controller (10). Each of the air inlet fans (5) is electrically connected to the controller (10) via a frequency converter (11) and is controlled by the controller (10).

5. The drying device according to claim 1, characterized in that: The top plate (103) of the box body (1) is detachably connected to the front plate (101) or the rear plate (102) or the two side plates (104) of the box body (1).

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