KR100379185B1 - A rolling mill for copper-wire its' rolling methods - Google Patents

Abstract

The present invention relates to a copper wire rolling mill and a rolling method thereof, wherein the copper rolling mill according to the present invention includes: a drawing unit having a fresh oil storage unit and a die so that the copper wire supplied from the outside is drawn into a predetermined size; Washing means for applying hot steam to the copper wire to remove impurities from the copper wire passing through the drawing means; A rolling roller for rolling the copper wire passing through the cleaning means; Heat treatment means for heat-treating copper wire passing through the rolling roller; Adjusting means for variably adjusting the moving speed of the copper wire according to the length of the thermally expanded copper wire while being heat treated by the heat treatment means; Drying means for drying the copper wire passing through the heat treatment means; The copper wire rolling mill for film connector according to the present invention is provided with a collecting means for collecting copper wire through drying means, and various cleaning steps for precise rolling dimension management of copper wire and formation of better appearance condition, and rolling and progressing state of copper wire. By adjusting the working progress speed according to the effect there is an effect to be able to manufacture a batch of copper wire with excellent dimensions and quality control.

Description

Copper rolling mill and its rolling method {A rolling mill for copper-wire its' rolling methods}

The present invention relates to a copper wire rolling mill and a rolling method thereof, and more particularly, to a copper wire rolling mill for a film connector and a rolling method for improving the rolling state and rolling efficiency of the copper wire used in the film connector.

In general, a flexible film connector used in various electronic products is implemented by coating a resin material on the outer surface in a state where a plurality of copper wires are installed. Copper wires inherent in such film connectors are usually manufactured by rolling their thickness and dimensions by rolling.

On the other hand, rolling refers to a process of inducing plastic deformation since metal passes between rolls. Such rolling is one of the most widely used plastic processing processes because of the high production speed and easy control of the degree of dimension.

By the way, the conventional apparatus for rolling copper wire for film connectors is to roll the fresh copper wire to the product size applicable to the film connector, the cleaning of the copper wire in the fresh state is not performed properly. The surface of the copper wire is not smooth, and there is a problem that the variable control of the moving speed of the copper wire during the rolling process is not properly performed, the surface of the copper wire is damaged or the size control for the exact thickness of the copper wire is not made.

The present invention is to solve the above-mentioned conventional problems, and to perform the cleaning of the copper wire with the rolling, to enable more accurate copper wire dimension management, such rolling, cleaning, and dimension management can be done in a batch process It is to provide a copper rolling mill and a rolling method.

1 is a side configuration diagram showing a copper wire rolling mill according to the present invention.

2 is a perspective view showing the configuration of a copper wire rolling mill according to the present invention.

Figure 3 is an enlarged perspective view showing the speed control unit mounted on the copper wire rolling machine according to the present invention.

Figure 4 is an enlarged cross-sectional view showing a compressed air drying structure mounted on the copper wire rolling machine according to the present invention.

5 is an enlarged cross-sectional view illustrating a hot air drying structure mounted on the copper wire rolling machine according to the present invention.

** Description of the symbols for the main parts of the drawings **

100 ... supply bobbin

200 ... Fresh Oil Storage

220 ...

300 ... heat treated case

430 ... Adjustment belt

500 ... Injector

510 ... drying case

600 ... thickness sensor

Copper wire rolling mill for a film connector according to the present invention for achieving the above object is a drawing means having a draw oil storage unit and a die so that the copper wire supplied from the outside is drawn to a predetermined size; Cleaning means for applying hot steam to the copper wire to remove impurities from the copper wire passing through the wire; A rolling roller for rolling the copper wire passing through the cleaning means; Heat treatment means for heat-treating the copper wire passing through the rolling roller; Adjusting means for variably adjusting the moving speed of the copper wire according to the length of the copper wire thermally expanded while being heat treated by the heat treatment means; Drying means for drying the copper wire passing through the heat treatment means; And collecting means for collecting the copper wire passing through the drying means.

And preferably the heat treatment means is a coolant is stored but the inlet is formed in the upper one side and the outlet is formed in the other upper portion; A first heat treatment roller installed at an inner lower side of the case and to which an electrode is applied; A second heat treatment roller installed at an outer side of the inlet of the case to guide the copper wire to the inside of the case, to which an electrode different from the heat treatment roller is applied; It is provided with a withdrawal roller which is installed on the outside of the outlet of the case to guide the withdrawn copper wire.

Also preferably, the adjusting means is rotated by the control motor, the control motor is provided to reduce the diameter from one end to the other end side and the second control roller for transmitting power to the second heat treatment roller; It is connected to the second control roller and the belt is provided to reduce the diameter in the opposite direction to the second control roller and is provided with a first control roller for transmitting power to the first heat treatment roller.

In addition, the control belt wound on the first control roller and the second control roller; The adjusting belt is provided as a moving member for moving from one end of the first adjusting roller and the second adjusting roller to the other end side.

The drying means may include a heating heater and a blowing fan for supplying heated hot air to the copper wire, and a thickness sensor for detecting the thickness of the copper wire is installed between the drying means and the collecting means.

And the copper wire rolling method for a film connector according to the present invention is a copper wire supply step for supplying copper wire from the outside; A wire drawing step of drawing the supplied copper wire; A steam cleaning step of washing the surface of the copper wire which has been freshly processed with steam; Rolling the cleaned copper wire to a predetermined size; A heat treatment step of heat-treating the copper wire having undergone the rolling step to have a flexible characteristic; Hot air drying step of removing the foreign matter on the copper wire surface of the heat treatment step with hot air; It is provided with a collection step of collecting the copper wire passed through the hot air drying step.

And preferably, the thickness measuring step of measuring the thickness of the copper wire passed through the hot air drying step is further provided.

Further preferably characterized in that it further comprises a bad processing step of forcibly defective processing the copper wire to one side so that the copper wire can be defectively processed when replacing the collection bobbin collected the copper wire in the winding step.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the drawings.

The copper wire rolling mill for a film connector according to the present invention has a high temperature so as to remove impurities on the copper wire through the drawing means and the drawing means having a draw oil storage part and a die so that the copper wire supplied from the supply bobbin is drawn to a predetermined size as a whole. A cleaning means for applying steam to the copper wire, and a rolling roller for rolling the copper wire passed through the cleaning means, and heat treatment means for heat-treating the copper wire passed through the rolling roller.

And a control means for variably adjusting the moving speed of the copper wire according to the length of the thermally expanded copper wire while being heat treated by the heat treatment means, a drying means for drying the copper wire through the heat treatment means, and a collecting means for collecting the copper wire through the drying means. to be.

These configurations are implemented together inside and on the side of the mill body as shown in FIG. 1.

In more detail with respect to these components, first of all, the supply bobbin (100) and the supply bobbin (100) is wound around the supply bobbin (100) wound around the left side of the main body 10 is implemented in a predetermined size A supply motor 110 for supplying the copper wire 11 from 100 is provided.

And the copper wire 11 supplied from the supply bobbin 100 passes through a drawing means. The drawing means is installed on the lower side of the first guide roller 130 and the first guide roller 130 provided on the shelf 120 provided on the left side of the main body 10 and the copper wire 11 through the first guide roller 130. ) Is installed to be wound several times, and is axially supported on the lower side, and has a first adjusting roller 140 provided with a sensing unit (not shown) for detecting a rotation state.

The first adjusting roller 140 has a distance between the first guide roller 130 is variable according to the moving speed of the copper wire 11, and the sensing unit detects this and transmits the state to the supply motor 110 as a signal. By adjusting the speed of the supply motor 110 is to be made.

And after passing through the first guide roller 130, the fresh means is provided. The drawing means is a copper wire 11 guided from the first guide roller 130 enters the roller 201 is installed therein, and has a fresh oil storage unit 200, the fresh oil is stored therein In addition, the fresh oil storage unit 200 is provided with a dice 210 provided on one side.

When the die 210 is supplied with a raw material of copper wire 11 which is slightly larger than a product of a predetermined standard, the die 210 can pass a product and produce a product of a more accurate standard.

In addition, a cleaning means for removing fresh oil and other impurities from the surface of the copper wire 11 past the die 210 by using a TM team is provided for cleaning. The washing means is provided with a cylindrical steam pipe 220 coupled to one side of the die 210 and a supply hose 230 for supplying steam to the steam pipe 220 so that steam is supplied from the outside to the inside. have.

Subsequently passing through the steam pipe 220, the two rolling rollers 240 and the rolling motor 250 in contact with each other to roll the copper wire 11 is installed. When the copper wire 11 is passed through the die 210 and the steam pipe 220 and the rolling is made in the rolling roller 240 immediately, the copper wire 11 is rolled from the rolling roller 240 according to the progress of the copper wire 11. A sliding phenomenon may occur, and this sliding phenomenon may change its specification along with surface damage of the copper wire 11.

Therefore, first, the copper wire 11 is wound once, but a better rolling state by allowing the copper wire 11 to proceed toward the rolling roller 240 through the pull roller 260 slightly larger in diameter than the rolling roller 240. To be able to perform

Next, when the rolling roller 240 passes through, the copper wire 11 enters into the main body 10. The second guide roller 270 for supporting and guiding the lower portion of the copper wire 11 entered is installed in the main body 10, and the driving speed of the rolling motor 250 is adjusted in the lower portion of the second guide roller 270. A sensing unit (not shown) for sensing the rotational state of the second adjustment roller 280 and the second adjustment roller 280, which is axially supported by the main body 10 to enable vertical rotation, is provided. In addition, a first support roller 290 supporting the lower portion of the copper line 11 is installed at a portion past the second guide roller 270.

On the other hand, after passing through the second guide roller 270 and the first support roller 290, heat treatment means for heat-treating the copper wire 11 is provided.

The heat treatment means is disposed up and down inside the main body 10 and is provided with a heat treatment case 300 in which water or other materials are stored to prevent discoloration due to cooling and oxidation of the copper wire 11.

An inlet through which the copper wire 11 enters the upper one side of the heat treatment case 300 is formed, and an outlet through which the copper wire 11 enters the other upper side is formed. The heat treatment case 300 is an opening and closing door (not shown) is installed on one side so as to be able to open and close the inside, the entrance and exit the entrance pipe 320 to guide the entry and exit of the copper wire 11 and the exit Tube 330 is installed.

And the copper wire 11 is wound around the inlet side of the heat treatment case 300 to allow the copper wire 11 to enter the inlet side of the heat treatment case 300, the second heat treatment roller 350 is installed At the upper side of the outlet side of the heat treatment case 300, a withdrawal roller 360 for guiding the withdrawal of the copper wire 11 heat-treated through the heat treatment case 300 is installed.

On the other hand, the first heat treatment roller 340 is installed in the lower side of the heat treatment case 300, the copper wire 11 is entered into the heat treatment case 300, the electrode opposite to the second heat treatment roller 350 is applied. do.

Therefore, as different electrodes are applied between the first heat treatment roller 340 and the second heat treatment roller 350, the copper wire 11 is wound between the first heat treatment roller 340 and the second heat treatment roller 350. (11) Resistance heat treatment is performed in which heat is generated according to its own resistance.

In this case, while the heat treatment is performed, the length of the copper wire 11 is increased due to thermal expansion. On the other hand, since the distance between the first heat treatment roller 340 and the second heat treatment roller 350 is always constant, the proper winding state for the increased copper wire 11 cannot be maintained, and the surface of the copper wire 11 is damaged or poor contact. The occurrence of a product in the state or an electric arc may occur.

Therefore, during the heat treatment, the copper wire 11 should always be properly wound between the first heat treatment roller 340 and the second heat treatment roller 350. For this purpose, an adjusting means is provided.

As shown in FIG. 3, the adjustment means is supported by components that will be described later by a plurality of brackets inside a block provided inside the main body.

Referring to these components, first provided with a control motor 400, the rotation by the control motor 400 is provided to reduce the diameter from one end to the other end side and the second heat treatment roller 350 and the second power The diameter of the second control roller 420 and the second control roller 420 connected to the transmission belt 480 is provided to decrease in the opposite direction, but is connected to the first heat treatment roller 340 and the first power transmission belt 470. The first adjusting roller 410 is provided.

And a control belt 430 wound around the first adjusting roller 410 and the second adjusting roller 420, and the adjusting belt 430 has one end of the first adjusting roller 410 and the second adjusting roller 420. Is provided with a moving member for moving to the other end side. Here, the moving member is implemented as a clamp 460 hanging on one side of the moving motor 440 and the ball screw 450 and the adjustment belt 430.

The second adjustment roller 420 is configured to transmit power to the second heat treatment roller 350 by the second power transmission belt 480, and the first adjustment roller 410 is the first heat treatment roller 340. ) Is connected to each other by the first power transmission belt 470 wound together in the take-out roller 360 and the tension control roller 370.

On the other hand, the connection by these belts 470, 480 is implemented by a plurality of pulleys 490, because these pulleys 490 are installed together on the axis of each roller, a detailed description of each Is omitted.

And without using the configuration of the plurality of belts and pulleys and the adjusting rollers in the above-described adjusting means, it is also possible to perform the function of the present invention by using only a variable speed motor.

Next, the drying means is for removing the moisture on the surface of the copper wire 11 through the heat treatment means.

This drying means is implemented as a primary drying means and a secondary drying means, the primary drying means is installed through the exit pipe 330 side of the heat treatment case 300, as shown in Figure 4, the injection portion By directing the compressed air supplied from the outside to the copper wire 11 to face the lower portion of the outlet pipe 330, the compressed air to remove some of the moisture buried in the copper wire 11 in the inside of the outlet pipe 330 The injection pipe 500 is provided.

By the way, since this primary drying means only blows compressed air, it is difficult to make complete drying with respect to the copper wire 11. Therefore, the copper wire 11 then proceeds to the secondary drying means.

The secondary drying means is inserted into the copper wire 11 through the second support roller 520 and the third support roller 530 through the take-out roller 360 as shown in FIG. In the drying case 510, the heater 540 provided in the drying case 510 and the blowing fan 550 and the blowing fan 550 for supplying the heating air of the heater 540 to the copper wire 11 A guide duct 560 for guiding the blown air is provided.

And the copper wire 11 through the drying means continues to pass through the thickness measuring sensor 600 via the fourth support roller 570 and the fifth support roller 580. This thickness measuring sensor 600 is applied to the LC-5000 model of Japan KEYENCE in the embodiment of the present invention.

Subsequently, when passing through the thickness measuring sensor 600, a third guide roller 610 is next installed, and a third adjustment roller 620 in which the copper wire 11 is wound on the lower side of the third guide roller 610. ) Is installed.

Like the first control roller 140 and the second control roller 280, one end of the third adjustment roller 620 is installed to be able to rotate up and down, and at the shaft portion of the third adjustment roller 620. A sensing unit (not shown) for detecting a vertical driving state is provided to variably adjust the rotation speed of the collection motor 740 which will be described later.

And after passing through the third guide roller 610, a collecting means for collecting the copper wire 11 as a product is finally provided.

The collecting means is installed on the upper portion of the outer outlet side of the main body 10 and installed on the upper collection roller 700 and the lower portion of the upper collection roller 700 to be driven up and down by the air cylinder 710 and the lower side of the outlet. It is provided with a lower collection roller 720 located.

And the collection shelf 730 for the installation and support of the lower collection roller 720 is installed, and driven by the collection motor 740 so that the final rolled copper wire 11 is wound on the collection shelf 730 A collection bobbin 750 is provided. The collection bobbin 750 can be replaced continuously according to the winding state of the copper wire.

Hereinafter, a rolling method of the copper wire rolling mill for a film connector according to the present invention configured as described above will be described with reference to the drawings.

Copper wire 11 rolling method according to the invention as a whole, the copper wire supply step for supplying the copper wire 11 from the outside, the wire processing step for drawing the supplied copper wire 11, the surface of the drawn copper wire 11 Steam cleaning step of washing with steam; Rolling step of rolling the cleaned copper wire 11 to a predetermined size, heat treatment step to heat the copper wire 11 undergoes the rolling step to have a flexible characteristic, foreign matter on the surface of the copper wire 11 during the heat treatment step is removed by hot air The hot air drying step, the hot air drying step is provided with a collection step of collecting the copper wire 11 went through.

Hereinafter, each step will be described, the first copper wire supply step is a copper wire (11) by the supply bobbin 100 is wound around the copper wire 11 before rolling and the supply motor 110 for rotating the supply bobbin (100) ) Is supplied.

At this time, the supply motor 110 is to control the supply speed of the copper wire 11, this variable adjustment operation is made in accordance with the drive of the first variable roller 140 installed on the lower side of the first guide roller 130. .

That is, when the supply of the copper wire 11 to the rolling roller 240 is made faster, the winding state of the first adjusting roller 140 is shortened, so that the first adjusting roller 140 rotates upward and the rolling roller is rotated upward. When the supply of the copper wire 11 to the 240 is made late, the first adjustment roller 140 is relatively rotated downward.

The sensing unit senses the vertical rotation of the first adjusting roller 140 to control the rotational speed of the supply motor 110 to adjust the supply speed of the copper wire 11 to be supplied.

And if the copper wire 11 is supplied from the supply bobbin 100, and then proceeds to the wire processing step of drawing the copper wire (11). In this drawing process, the copper wire 11 is supplied to the fresh oil storage unit 200 in which the fresh oil is stored, and the copper wire 11 passes through the fresh oil while passing through the roller 201 in the fresh oil storage unit 200. As the copper wire 11 passes through the die 210, the copper wire 11 is deformed to a predetermined size and passes through the die 210.

And a large amount of fresh oil is buried in the copper wire 11 processed at this drawing stage. Therefore, a steam cleaning step of cleaning the copper wire 11 by applying steam to the surface of the copper wire 11 to remove the fresh oil is performed.

When the copper wire 11 is cleaned in this steam washing step, a rolling step of rolling the copper wire 11 to a predetermined size is performed. This rolling step is to be supplied to the rolling roller 240 in a state in which the copper wire 11 is first wound once in the pulling roller 260 slightly larger in diameter than the rolling roller 240 before passing through the rolling roller 240. This is because, when the copper wire 11 that has passed through the die 210 is directly pulled out, the size of the copper wire 11 may be partially changed due to the sliding phenomenon of the copper wire 11.

Therefore, when the copper wire 11 proceeds to the rolling roller 240 in a stable state through the pulling roller 260, the copper wire 11 is rolled to the product size, and then enters the inside of the main body 10.

On the other hand, the copper wire 11 entered into the main body 10 is subjected to a heat treatment step to secure the flexibility by partially modifying its characteristics. Before going through this heat treatment step, the copper wire 11 is wound around the second guide roller 270 and the second control roller 280 to control the speed of the rolling motor 250 and then wound around the second heat treatment roller 350. The heat enters the case 300 through the entry pipe 320.

And it is wound on the first heat treatment roller 340 in the lower portion of the entry pipe 320 is directed to the exit pipe 330 side, the copper wire 11 penetrating the exit pipe 330 is guided by the withdrawal roller 360 And withdrawal guidance to the outside.

In this heat treatment structure, when a different electrode is applied to each of the second heat treatment roller 350 and the first heat treatment roller 340, the resistive heat treatment is performed in the copper wire 11. However, due to heat generated at this time, the length of the copper wire 11 may increase. Therefore, the speed control for the length of the increased copper wire 11 is performed by the first heat treatment roller 340 and the drawing roller 360.

This speed control operation is the movement of the moving motor 440 of the moving member when the length of the copper wire 11 is long to rotate the ball screw 450, the clamp 460 by the rotation of the ball screw 450, the control belt ( The 430 is driven to one side or the other side.

Therefore, when the length of the copper wire 11 is long, the first heat treatment roller 340 and the drawing roller 360 should rotate faster.

To this end, the adjustment belt 430 is moved to a portion of the small diameter of the first adjustment roller 410 that transmits power to the first heat treatment roller 340, the first heat treatment roller 340 and the take-out roller 360 By having a faster rotational speed than the second heat treatment roller 350, the moving speed of the copper line 11 can be adjusted. If the speed is reduced, the adjustment belt 430 can be moved in the opposite direction.

When the copper wire 11 heat-treated inside the heat treatment case 300 is sprayed with compressed air through the injection pipe 500 on the copper wire 11 before advancing through the exit pipe 330, the copper wire 11 is buried in the copper wire 11. Cooling water is removed from the copper wire (11). However, the complete drying on the copper wire 11 is not performed by the injection of compressed air at this time.

Therefore, the copper wire 11 passing through the outlet pipe 330 and the drawing roller 360 proceeds to the inside of the drying case 510 via the second supporting roller 520 and the third supporting roller 530. The copper wire 11 which has advanced to the inside of the 510 is lowered from the upper part of the drying case 510 as the air heated from the heater 540 is supplied through the blower fan 550 upward from the lower part of the drying case 510. As a result, complete drying is achieved by hot air.

Next, the copper wire 11 coming out from the lower part of the drying case 510 is raised upward through the fourth support roller 570, and the copper wire 11 is supported by the fifth support roller 580 at the upper side to measure the thickness. Pass the sensor 600.

The copper wire 11 passing through the thickness measuring sensor 600 is wound around the third guide roller 610 and the third adjusting roller 620 and then comes out of the main body 10. The third adjusting roller 620 The variable for adjusting the rotational speed of the collection motor 740 for rotating the collection bobbin 750.

Since the copper wire 11 from the main body 10 is wound around the collection bobbin 750, the production of the final rolling state is completed.

On the other hand, it is determined that the thickness of the copper wire 11 measured through the thickness sensor 600 is not rolled to the correct dimensions, or when the collection bobbin 750 is replaced so that the copper wire 11 can be treated badly. A defect processing step of forcibly defectively processing the copper wire 11 is performed.

This defective treatment step is the upper collection roller 700 is lowered by the air cylinder 710 to contact the lower collection roller 720, the copper line 11 is lowered by the upper collection roller 700 while the lower collection roller By the 720, the collection process to the lower part of the collection shelf 730, the poor treatment is made, and if the bad processing is completed and the winding of the normal product is wound around the copper wire 11 to the replaced collection bobbin 750 By raising the upper collection roller 700, a normal product collection step is performed.

As described above, the copper wire rolling mill for the film connector according to the present invention allows the wire processing and the rolling, the heat treatment, the cleaning, and the control of the thickness of the copper wire to be simultaneously processed in one batch. Therefore, all other embodiments including equivalent components included in the claimed scope of the invention should be considered to be included in the technical scope of the present invention.

As described above, the copper wire rolling mill for film connectors according to the present invention is more excellent by making the control of the work progress according to the various rolling steps and the rolling and progressing conditions of the copper wire for accurate rolling dimension management of copper wire and formation of better appearance condition. There is an effect to be able to manufacture a batch of copper wire with a dimension and quality control.

Claims (8)

A drawing means having a fresh oil storage unit and a die so that the copper wire supplied from the outside is drawn to a predetermined size; Cleaning means for applying hot steam to the copper wire to remove impurities from the copper wire passing through the wire; A rolling roller for rolling the copper wire passing through the cleaning means; Heat treatment means for heat-treating the copper wire passing through the rolling roller; Adjusting means for variably adjusting the moving speed of the copper wire according to the length of the copper wire thermally expanded while being heat treated by the heat treatment means; Drying means for drying the copper wire passing through the heat treatment means; And a collecting means for collecting the copper wire passing through the drying means. According to claim 1, wherein the heat treatment means is stored in the cooling water, the inlet is formed on the upper side and the outlet is formed on the other side; A first heat treatment roller installed at an inner lower side of the case and to which an electrode is applied; A second heat treatment roller installed outside the inlet of the case and guiding the copper wire into the case, the second heat treatment roller being different from the heat treatment roller; And a drawing roller installed at an outlet outside of the case to guide the drawing of the copper wire which has been heat-treated. According to claim 2, wherein the control means is rotated by the control motor, the control motor is provided to reduce the diameter from one end to the other end side and the second adjustment roller for transmitting power to the second heat treatment roller; A first adjusting roller connected to the second adjusting roller and a belt, the first adjusting roller configured to reduce a diameter in a direction opposite to the second adjusting roller and transmitting power to the first heat treatment roller; An adjusting belt wound around the first adjusting roller and the second adjusting roller; The copper wire rolling mill, characterized in that provided as a moving member for moving the control belt from one end of the first control roller and the second control roller to the other end side. The copper wire rolling mill of claim 1, wherein the drying unit includes a heating heater and a blowing fan for supplying hot air heated to the copper wire. The copper wire rolling mill according to claim 1, wherein a thickness sensor is installed between the drying means and the collecting means to detect the thickness of the copper wire. A copper wire supply step of supplying copper wire from the outside; A wire drawing step of drawing the supplied copper wire; A steam cleaning step of washing the surface of the copper wire which has been freshly processed with steam; Rolling the cleaned copper wire to a predetermined size; A heat treatment step of heat-treating the copper wire having undergone the rolling step to have a flexible characteristic; Hot air drying step of removing the foreign matter on the copper wire surface of the heat treatment step with hot air; Copper wire rolling method characterized in that provided in the collecting step of collecting the copper wire passed through the hot air drying step. The copper wire rolling method according to claim 6, further comprising a thickness measuring step of measuring a thickness of the copper wire which has been subjected to the hot air drying step. 8. The method of claim 6 or 7, further comprising a defect processing step of forcibly treating the copper wire to one side so that the copper wire can be defectively processed when replacing the collection bobbin in which the copper wire is collected in the winding step. Copper wire rolling method characterized in that.