Copper strip pickling and drying equipment and control method

Abstract

The present invention provides a copper strip pickling and drying device, comprising a first mounting seat, a limiting member, a lifting screw, a mounting frame, a guide roller, a drying mechanism and a blocking mechanism, wherein there are two limiting members, which are respectively arranged on the upper rear side of the first mounting seat, the lifting screw is rotatably arranged on the upper front side of the first mounting seat, the mounting frame is slidably connected to the limiting member, the guide roller is rotatably arranged on the mounting frame, the drying mechanism is arranged on the first mounting seat, and the blocking mechanism is arranged on the drying mechanism. The copper strip is placed between the tops of the guide rollers and the copper strip is fitted with the drying roller, and the direction of the air outlet slot opening on the blocking member is adjusted by operating the regulating motor so that the final flow direction of the air flow can face the surface of the copper strip. During the movement of the copper strip, the hot air flow will continuously be discharged through the heat dissipation holes on the drying roller, and the upper and lower surfaces of the copper strip will be dried in a close-fitting manner in both directions. The air flow will be concentratedly sprayed under the bunching effect, thereby improving the drying efficiency and drying effect.

Description

Technical Field

[0001] The present invention relates to the field of copper strip drying, and in particular to a copper strip pickling and drying device and a control method. Background Art

[0002] Copper strip pickling is a process used to clean and treat the surface of copper strip. First, the copper strip is cleaned to remove oil, dirt and other impurities on the surface, and then enters the pickling tank for pickling treatment to effectively remove the oxide layer, rust and other contaminants on the surface of the copper strip, while improving the surface smoothness and roughness. After the pickling treatment is completed, the copper strip must be dried to prevent the pickling solution from adhering to the surface of the copper strip and affecting subsequent processing. At this time, drying equipment is generally used to treat the surface of the copper strip. First, the copper strip is placed on the equipment and the surface of the copper strip is dried by the hot air flow generated by the equipment. After one side is dried, it is turned over and the drying process is repeated. However, in this process, the source of the airflow is a certain distance away from the surface of the copper strip, and the flow direction of the airflow is difficult to be restricted. It is a dispersed flow. At the same time, the turning operation will increase the operation steps and increase the difficulty of operation, which will lead to a decrease in the drying efficiency and effect of the copper strip surface.

[0003] Therefore, in order to solve the above problems, a copper strip pickling and drying equipment is now developed which can bundle the airflow direction and perform a laminating bidirectional drying process at the same time. Summary of the Invention

[0004] In order to overcome the shortcomings of existing devices in which the airflow source is at a certain distance from the copper strip surface during drying treatment, the flow direction of the airflow is difficult to restrict and flows in a dispersed manner, and the turning operation also increases the operation steps and increases the difficulty of operation, thereby reducing the drying efficiency and effect of the copper strip surface, the present invention provides a copper strip pickling and drying device that can bundle the airflow direction and perform a laminating bidirectional drying treatment at the same time.

[0005] The technical implementation scheme of the present invention is: a copper strip pickling and drying equipment, comprising:

[0006] a first mounting seat;

[0007] There are two limiting members, each of which is arranged on the upper side of the rear portion of the first mounting seat;

[0008] A lifting screw, rotatably arranged on the upper front side of the first mounting seat;

[0009] A mounting frame is slidably connected to the limiting member, the mounting frames are all threadedly connected to the adjacent lifting screws, and the lifting screws are all through-connected to the mounting frame;

[0010] A guide roller, rotatably arranged on the mounting frame, for guiding the copper strip;

[0011] A drying mechanism, disposed on the first mounting seat, for performing laminating bidirectional drying on the copper strip;

[0012] The blocking mechanism is arranged on the drying mechanism and is used to converge the airflow.

[0013] Optionally, the drying mechanism includes a first mounting plate, eight first mounting plates, two of which are welded to the upper left side of the first mounting seat, the top of the first mounting plate on the left side is connected to another first mounting plate through a connecting plate, and the right side of the first mounting plate on the left side is also connected to another first mounting plate through a connecting plate, and drying rollers for outputting airflow to dry the surface of the copper strip are rotatably arranged between the two first mounting plates on the upper left side and the two first mounting plates on the upper right side, and the drying rollers are through-connected to adjacent first mounting plates, and air inlets for feeding hot air are connected to the upper first mounting plates, and the air inlets are connected to adjacent drying rollers, and switch disks are rotatably connected to the air inlets.

[0014] Optionally, the blocking mechanism includes a blocking member, and there are two blocking members in total. The blocking members are both installed between the corresponding first mounting plates, and the drying rollers are both located inside the adjacent blocking members. An adjusting motor is installed on the front side of the first mounting plate on the front left side, and the adjusting motor output shaft is through-connected with the adjacent first mounting plate. A gear is connected to the adjusting motor output shaft, and the front end of each blocking member is connected to two of the gears. The rear side of the first mounting plate on the lower right front side is rotatably connected to the gear, and the two adjacent gears above and below are meshed with each other, and a pulley assembly is connected between the two gears on the lower side.

[0015] Optionally, an anti-deviation mechanism is also included, and the anti-deviation mechanism includes a second mounting seat, and there are two second mounting seats. The second mounting seats are respectively installed on the right side of the first mounting plate on the upper left side. The second mounting seats are slidably and rotatably connected with anti-deviation rollers for preventing the copper strip from deviating. The right side of the second mounting seat is rotatably provided with an adjusting screw, and the adjusting screws are threadedly connected to the adjacent anti-deviation rollers.

[0016] Optionally, a scraping mechanism is also included, which includes a push rod, four push rods are connected to the blocking member on the left, and mounting columns are installed on the left side of the first mounting plate in the lower left part by bolts, and scrapers for wiping the upper and lower surfaces of the copper strip are slidably connected between the mounting columns, the bottom ends of the scrapers are in contact with the push rods, and two springs are connected between the scrapers and the mounting columns.

[0017] Optionally, a clamping mechanism is also included, which includes a second mounting plate, two second mounting plates are connected to the air outlet groove of the blocking member, and clamping rollers for clamping and limiting the copper strip are rotatably connected between the front and rear adjacent second mounting plates.

[0018] Optionally, a collection mechanism is also included, which includes a positioning member. The positioning member is connected to the upper left side of the first mounting seat. The positioning member and the first mounting seat are connected in a detachable connection structure. A collection frame for collecting debris is connected to the left side of the positioning member, and the collection frame is located directly below the scraper.

[0019] Optionally, each of the blocking members is provided with an air outlet groove.

[0020] Optionally, the pulley assembly includes a pulley and a transmission belt, the pulleys are installed on the rear sides of the two gears on the lower side, and the transmission belt is wound between the pulleys.

[0021] Optionally, a control method for a copper strip pickling and drying device comprises the following specific steps:

[0022] Step 1: First, according to the condition of the copper strip after pickling and the specifications of the copper strip itself, rotate the lifting screw to adjust the height of the installation frame so that the height difference between the two guide rollers can match the condition of the copper strip. After the adjustment is completed, place the copper strip between the tops of the guide rollers;

[0023] Step 2: Then allow the copper strip to pass between the two drying rollers and fit close to the drying rollers. At the same time, the copper strip is limited by the pressure roller. After placement is completed, the motor output shaft is controlled to rotate, so that the corresponding gear drives the pulley assembly to operate, and then the corresponding gears start to rotate synchronously. At this time, under the rotation of the two gears on the lower side, the two gears on the upper side also rotate synchronously. The rotation of the two gears on the upper side will drive the blocking member to rotate, thereby adjusting the direction of the air outlet slot;

[0024] Step 3: Then, according to the specific width of the copper strip, rotate the adjusting screw to adjust the specific position of the anti-skew roller so that the distance between the anti-skew rollers can be adapted to the width of the copper strip;

[0025] Step 4: Finally, pass the copper tape between the scrapers and then control the movement of the copper tape normally.

[0026] By adopting the above technical solution, the present invention has the following advantages:

[0027] 1. When drying the pickled copper strip, place the copper strip between the tops of the guide rollers and fit the copper strip to the drying roller. Adjust the direction of the air outlet slot on the blocking member by operating the regulating motor so that the final flow direction of the airflow is directly facing the surface of the copper strip to achieve airflow convergence. During the movement of the copper strip, the hot air flow will continuously be discharged through the heat dissipation holes on the drying roller. The upper and lower surfaces of the copper strip will be dried in a close-fitting manner. The airflow will be concentrated and sprayed under the action of the convergence, thereby improving the drying efficiency and drying effect. The residual pickling solution on the copper strip can evaporate quickly to avoid accidental residue.

[0028] 2. During the movement of the copper belt, according to the specific width of the copper belt, the adjustment screw is turned to adjust the specific position of the anti-skew roller so that the distance between the anti-skew rollers can be adapted to the width of the copper belt. After the adjustment is completed, the anti-skew rollers are used to limit and guide the two sides of the copper belt to prevent the copper belt from deviating.

[0029] 3. As the blocking piece on the left begins to rotate and adjust, the ejector rod will move synchronously with the blocking piece on the left, and will no longer support the scraper. In the initial state, the springs are in a stressed and stretched state. When the scraper is no longer supported, the scraper will slide downward along the mounting column under the action of the spring until it contacts the ejector rod again and stops moving. At this time, the scraper can cooperate with the adjustment of the blocking piece on the left to adapt to the discharge position of the copper strip, and finally let the copper strip pass between the scrapers, thereby wiping and cleaning the surface of the copper strip when it is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0031] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0032] Figure 3 It is a schematic diagram of the three-dimensional structure of the drying mechanism of the present invention.

[0033] Figure 4 It is a partial cross-sectional three-dimensional structural schematic diagram of the drying mechanism of the present invention.

[0034] Figure 5 It is a schematic diagram of the three-dimensional structure of the blocking mechanism of the present invention.

[0035] Figure 6 It is a partial cross-sectional three-dimensional structural diagram of the anti-drift mechanism of the present invention.

[0036] Figure 7 It is a schematic diagram of the three-dimensional structure of the scraping mechanism of the present invention.

[0037] Figure 8 It is a schematic diagram of the three-dimensional structure of the pressing mechanism of the present invention.

[0038] Figure 9 It is a schematic diagram of the three-dimensional structure of the collecting mechanism of the present invention.

[0039] The meanings of the reference numerals in the figure are as follows: 1: first mounting seat, 2: limiting member, 3: lifting screw, 4: mounting frame, 5: guide roller, 6: drying mechanism, 61: first mounting plate, 62: drying roller, 63: air intake member, 64: switch plate, 7: blocking mechanism, 71: blocking member, 72: adjusting motor, 73: gear, 74: pulley assembly, 8: anti-deviation mechanism, 81: second mounting seat, 82: anti-deviation roller, 83: adjusting screw, 9: scraping mechanism, 91: push rod, 92: mounting column, 93: scraping member, 94: spring, 10: pressing mechanism, 101: second mounting plate, 102: pressing roller, 11: collecting mechanism, 111: positioning member, 112: collecting frame. DETAILED DESCRIPTION

[0040] Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present invention. The appearance of such a phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] Example 1

[0042] A copper strip pickling and drying equipment, such as Figure 1 and Figure 2 As shown, it includes a first mounting seat 1, a left-right symmetrical limiter 2 is provided on the upper rear side of the first mounting seat 1, two left-right symmetrical lifting screws 3 are rotatably provided on the upper front side of the first mounting seat 1, the limiters 2 are slidably connected to the mounting frames 4, the mounting frames 4 are threadedly connected to the adjacent lifting screws 3, the lifting screws 3 are all through-set on the mounting frames 4, and the mounting frames 4 are rotatably provided with guide rollers 5 for guiding the copper strip, and also includes: a drying mechanism 6, the drying mechanism 6 is provided on the first mounting seat 1, and the drying mechanism 6 is used to perform laminating bidirectional drying of the copper strip; a blocking mechanism 7, the blocking mechanism 7 is provided on the drying mechanism 6, and the blocking mechanism 7 is used to bundle the airflow.

[0043] like Figure 1 、 Figure 3 and Figure 4As shown, the drying mechanism 6 includes a first mounting plate 61, eight first mounting plates 61, two of which are welded to the upper left side of the first mounting seat 1, the top of the first mounting plate 61 on the left side is connected to another first mounting plate 61 through a connecting plate, and the right side of the first mounting plate 61 on the left side is also connected to another first mounting plate 61 through a connecting plate, and drying rollers 62 for outputting airflow to dry the surface of the copper strip are rotatably arranged between the two first mounting plates 61 on the upper left side and the two first mounting plates 61 on the upper right side, and the drying rollers 62 are through-connected to the adjacent first mounting plates 61, and the upper first mounting plates 61 are connected to air inlets 63 for feeding hot air, and the air inlets 63 are communicated with the adjacent drying rollers 62, and the air inlets 63 are rotatably connected to the switch disk 64.

[0044] like Figure 1 and Figure 5 As shown, the blocking mechanism 7 includes a blocking member 71. There are two blocking members 71. The blocking members 71 are all installed between the corresponding first mounting plates 61. The drying rollers 62 are all located inside the adjacent blocking members 71. The blocking members 71 are all provided with air outlet grooves. An adjusting motor 72 is installed on the front side of the first mounting plate 61 on the left front side. The output shaft of the adjusting motor 72 is through-connected with the adjacent first mounting plate 61. A gear 73 is connected to the output shaft of the adjusting motor 72. Two gears 73 are connected to the front end of the blocking member 71. The rear side of the first mounting plate 61 on the lower right front side is rotatably connected to the gear 73. The two adjacent gears 73 above and below are meshed with each other. A pulley assembly 74 is connected between the two gears 73 on the lower side. The pulley assembly 74 includes a pulley and a transmission belt. The pulleys are all installed on the rear side of the two gears 73 on the lower side, and a transmission belt is wound around the pulleys.

[0045] It should be noted that after the copper strip is pickled, it is necessary to dry it to prevent the pickling solution from adhering to the surface of the copper strip. During the operation, first, according to the condition of the copper strip after pickling and the specifications of the copper strip itself, the lifting screw 3 is rotated to adjust the height of the mounting frame 4, so that the height difference between the two guide rollers 5 can match the condition of the copper strip. After the adjustment is completed, the copper strip is placed between the tops of the guide rollers 5, and at the same time, the copper strip is allowed to pass between the two drying rollers 62 and fit close to the drying rollers 62. After the placement is completed, the output shaft of the control motor 72 is controlled to rotate, so that the corresponding gear 73 drives the pulley assembly 74 to operate, and then the corresponding gear 73 starts to rotate synchronously. At this time, the two gears on the lower side Under the rotation of 73, the two gears 73 on the upper side also rotate synchronously. The rotation of the two gears 73 on the upper side will drive the blocking member 71 to rotate, thereby adjusting the direction of the air outlet slot so that the air outlet slot can face the upper and lower surfaces of the copper belt, completing the bundling processing of the air flow movement direction, and then connect the hot air flow output device to the air inlet member 63, open the switch disk 64 to allow the hot air flow to enter the drying roller 62 through the air inlet member 63, and the hot air flow will be discharged through the heat dissipation holes on the drying roller 62 after entering the drying roller 62. Finally, as the copper belt starts to move, it will drive the drying roller 62 to rotate synchronously. During the rotation of the drying roller 62, the hot air flow will be evenly sprayed on the upper and lower surfaces of the copper belt, realizing close-range two-way drying and improving drying efficiency.

[0046] Example 2

[0047] On the basis of Example 1, Figure 1 and Figure 6 As shown, an anti-deviation mechanism 8 is also included, and the anti-deviation mechanism 8 includes a second mounting seat 81. There are two second mounting seats 81, which are respectively installed on the right side of the first mounting plate 61 on the upper left side. The second mounting seats 81 are all slidably and rotatably connected with anti-deviation rollers 82 for preventing the copper strip from deviating. The right side of the second mounting seat 81 is rotatably provided with an adjusting screw rod 83, and the adjusting screw rod 83 is threadedly connected to the adjacent anti-deviation roller 82.

[0048] It should be noted that during the movement of the copper belt, the specific position of the anti-skew roller 82 is adjusted by rotating the adjusting screw 83 according to the specific width of the copper belt, so that the distance between the anti-skew rollers 82 can be adapted to the width of the copper belt. After the adjustment is completed, the anti-skew rollers 82 are used to limit and guide the two sides of the copper belt to prevent the copper belt from deviating during movement.

[0049] like Figure 1 and Figure 7As shown, a scraping mechanism 9 is also included, which includes a push rod 91. Four push rods 91 are connected to the left blocking member 71. Mounting columns 92 are installed on the left side of the lower left first mounting plate 61 by bolts. Scraping members 93 for wiping the upper and lower surfaces of the copper strip are slidably connected between the mounting columns 92. The bottom ends of the scraping members 93 are in contact with the push rod 91, and two springs 94 are connected between the scraping members 93 and the mounting columns 92.

[0050] It should be noted that as the blocking member 71 on the left begins to rotate and adjust, the top rod 91 will move synchronously with the blocking member 71 on the left, and will no longer support the scraper 93. In the initial state, the spring 94 is in a stressed and stretched state. When the scraper 93 is no longer supported, under the action of the spring 94, the scraper 93 will slide downward along the mounting column 92 until it contacts the top rod 91 again and stops moving. At this time, the scraper 93 can cooperate with the adjustment of the blocking member 71 on the left to adapt to the discharge position of the copper strip, and finally let the copper strip pass between the scrapers 93, thereby wiping and cleaning the surface of the copper strip when the copper strip is discharged.

[0051] like Figure 1 and Figure 8 As shown, it also includes a clamping mechanism 10, which includes a second mounting plate 101. Two second mounting plates 101 are connected to the air outlet groove of the blocking member 71, and a clamping roller 102 for clamping and limiting the copper strip is rotatably connected between the front and rear adjacent second mounting plates 101.

[0052] like Figure 1 and Figure 9 As shown, it also includes a collecting mechanism 11, which includes a positioning member 111. The positioning member 111 is connected to the upper left side of the first mounting seat 1. The positioning member 111 and the first mounting seat 1 are in a detachable connection structure. A collecting frame 112 for collecting debris is connected to the left side of the positioning member 111. The collecting frame 112 is located directly below the scraper 93.

[0053] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A copper strip pickling and drying device, characterized in that it includes: A first mounting seat (1); Limiting members (2), there are two limiting members (2), which are respectively arranged on the upper side of the rear portion of the first mounting seat (1); A lifting screw (3) is rotatably arranged on the upper front side of the first mounting seat (1); A mounting frame (4) is slidably connected to the limiting member (2), the mounting frame (4) is threadedly connected to the adjacent lifting screw rod (3), and the lifting screw rod (3) is through-connected to the mounting frame (4); A guide roller (5) is rotatably arranged on the mounting frame (4) and is used to guide the copper strip; A drying mechanism (6) is provided on the first mounting seat (1), and the drying mechanism (6) is used for performing laminating bidirectional drying on the copper strip; a blocking mechanism (7) disposed on the drying mechanism (6), the blocking mechanism (7) being used to converge the airflow; The drying mechanism (6) includes a first mounting plate (61), and there are eight first mounting plates (61), two of which are welded to the upper left side of the first mounting seat (1), the top of the first mounting plate (61) on the left side is connected to another first mounting plate (61) through a connecting plate, and the right side of the first mounting plate (61) on the left side is also connected to another first mounting plate (61) through a connecting plate, and a drying roller (62) for drying the surface of the copper strip by airflow output is rotatably provided between the two first mounting plates (61) on the upper left side and between the two first mounting plates (61) on the upper right side; The blocking mechanism (7) includes a blocking member (71), and there are two blocking members (71). The blocking members (71) are both installed between the corresponding first mounting plates (61). The drying rollers (62) are both located inside the adjacent blocking members (71). An adjusting motor (72) is installed on the front side of the first mounting plate (61) on the left front side, and the output shaft of the adjusting motor (72) is connected to the adjacent first mounting plate (61) in a through-type manner. The anti-deviating mechanism (8) is also included. The anti-deviating mechanism (8) includes a second mounting seat (81). There are two second mounting seats (81). The second mounting seats (81) are respectively installed on the right side of the first mounting plate (61) on the upper left side. The second mounting seats (81) are all slidably and rotatably connected with an anti-deviating roller (82) for preventing the copper strip from deviating. The right side of the second mounting seat (81) is rotatably provided with an adjusting screw rod (83). The adjusting screw rod (83) is threadedly connected to the adjacent anti-deviating roller (82). The scraping mechanism (9) further comprises a scraping mechanism (9), wherein the scraping mechanism (9) comprises a push rod (91), four push rods (91) are connected to the left blocking member (71), and mounting columns (92) are mounted on the left side of the first mounting plate (61) at the lower left by bolts, and scraping members (93) for wiping the upper and lower surfaces of the copper strip are slidably connected between the mounting columns (92), the bottom ends of the scraping members (93) are in contact with the push rod (91), and two springs (94) are connected between the scraping members (93) and the mounting columns (92).

2. The copper strip pickling and drying equipment according to claim 1, characterized in that: The drying rollers (62) are all connected to the adjacent first mounting plates (61) in a through-type manner. The upper first mounting plates (61) are all connected to air inlet members (63) for introducing hot air flow. The air inlet members (63) are all connected to the adjacent drying rollers (62). The air inlet members (63) are all rotatably connected to switch disks (64).

3. The copper strip pickling and drying equipment according to claim 2, characterized in that: The output shaft of the regulating motor (72) is connected to a gear (73), the front end of each blocking member (71) is connected to two gears (73), the rear side of the first mounting plate (61) on the lower right front side is rotatably connected to the gear (73), the two adjacent gears (73) above and below are meshed with each other, and a pulley assembly (74) is connected between the two gears (73) on the lower side.

4. The copper strip pickling and drying equipment according to claim 3, characterized in that: The invention also includes a pressing mechanism (10), wherein the pressing mechanism (10) includes a second mounting plate (101), two second mounting plates (101) are connected to the air outlet groove of the blocking member (71), and a pressing roller (102) for pressing and limiting the copper strip is rotatably connected between the front and rear adjacent second mounting plates (101).

5. The copper strip pickling and drying equipment according to claim 4, characterized in that: The device further comprises a collecting mechanism (11), wherein the collecting mechanism (11) comprises a positioning member (111), the positioning member (111) being connected to the upper left side of the first mounting seat (1), the positioning member (111) and the first mounting seat (1) being a detachable connection structure, the left side of the positioning member (111) being connected to a collecting frame (112) for collecting debris, the collecting frame (112) being located directly below the scraping member (93).

6. The copper strip pickling and drying equipment according to claim 5, characterized in that: The blocking members (71) are each provided with an air outlet groove.

7. The copper strip pickling and drying equipment according to claim 6, characterized in that: The pulley assembly (74) includes a pulley and a transmission belt. The pulleys are mounted on the rear side of the two gears (73) on the lower side, and the transmission belt is wound between the pulleys.

8. A control method for a copper strip pickling and drying device, based on the copper strip pickling and drying device according to claim 7, characterized in that: Specific steps as follows: Step 1: First, according to the condition of the copper strip after pickling and the specification of the copper strip itself, rotate the lifting screw (3) to adjust the height of the installation frame (4) so ​​that the height difference between the two guide rollers (5) can match the condition of the copper strip. After the adjustment is completed, place the copper strip between the tops of the guide rollers (5); Step 2: Then, the copper strip is allowed to pass between the two drying rollers (62) and fit closely with the drying rollers (62). At the same time, the copper strip is limited by the pressing roller (102). After the placement is completed, the output shaft of the regulating motor (72) is controlled to rotate, so that the corresponding gear (73) drives the pulley assembly (74) to operate, and then the corresponding gear (73) starts to rotate synchronously. At this time, under the rotation of the two gears (73) on the lower side, the two gears (73) on the upper side also rotate synchronously. The rotation of the two gears (73) on the upper side will drive the blocking member (71) to rotate, thereby adjusting the direction of the air outlet groove; Step 3: Then, according to the specific width of the copper strip, the adjusting screw (83) is rotated to adjust the specific position of the anti-deflection roller (82) so that the distance between the anti-deflection rollers (82) can be adapted to the width of the copper strip; Step 4: Finally, the copper strip is passed between the scraping pieces (93), and the movement of the copper strip is then controlled normally.

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