A width-controllable electrolytic copper foil production system

Abstract

The invention discloses a width-controllable electrolytic copper foil production system, including a cathode roller, which is mounted on a cathode roller shaft, and at least two shielding belts are wound around the cathode roller, and the shielding belts and the cathode roller are synchronously operated structures; there is a gap between the shielding belts. The invention arranges a shielding belt with a certain gap on the cathode roller, so that the shielding belt can be driven by the cathode roller to operate, thereby achieving the following advantages: first, electrolytic copper foils of different widths can be prepared, the scrap rate of edge materials is reduced, the yield rate is improved, and the power consumption is saved to reduce the production cost; second, the width of the copper foil can be directly adjusted by the shielding belt, and there is no need to stop the machine to replace the cathode roller, thereby achieving continuous operation and improving production efficiency; third, the O-ring sealing device is cancelled, saving the cost of purchasing the O-ring; fourth, because the shielding belt is in close contact with the surface of the cathode roller, the sealing effect is good, and copper foil copper powder and tearing defects will not be generated on the copper foil surface.

Description

Technical Field

[0001] The invention relates to the technical field of electrolytic copper foil, and in particular to a width-controllable electrolytic copper foil production system device. Background Art

[0002] Electrolytic copper foil is manufactured by electrifying a rotating metal cylinder in a copper sulfate solution and using electrochemical principles to precipitate copper. As the metal cylinder rotates, a "foil" shape gradually appears on its surface. The formed foil is electrolytic copper foil, and the production equipment is called a foil machine. The foil machine is mainly composed of a cathode roller, an anode tank, a liquid supply device, a conductive device, a winder, and an electrical control system. A side plate is fixed on the side of the cathode roller. At present, electrolytic copper foil manufacturers install an O-ring device in the U-shaped groove between the cathode roller and the side plate for shielding. However, due to the narrow shielding range of the O-ring, it can only play the role of shielding the tip effect of the edge of the cathode roller, reducing defects such as tearing and copper nodules. At the same time, the current electrolytic copper foil manufacturers can only produce copper foil with the same width as the cathode roller, which leads to the need to cut the edge of the copper foil according to the requirements of downstream customers in the later stage, which not only causes waste, but also has a low yield rate and high power consumption. In addition, there are several more production processes, which increases additional production costs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an electrolytic copper foil production system with controllable width, which has more reasonable structural design, better shielding effect, better quality of output copper foil, can simplify the production process, and can reduce production costs by saving electricity, in view of the shortcomings of the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a width-controllable electrolytic copper foil system, including a cathode roller, the cathode roller is mounted on the cathode roller shaft, a conductive ring is mounted on the cathode roller shaft to realize the electrification of the cathode roller, characterized in that: at least two shielding belts are wound around the cathode roller, the shielding belt and the cathode roller are synchronously operated; there is a gap between the shielding belts, the gap forms the foil space of the electrolytic copper foil, and the spacing between the shielding belts is the radial width of the electrolytic copper foil; each shielding belt is drawn out from the upper part of the cathode roller and wound on the tensioning guide device to form a circulation and tensioning structure of the shielding belt. The cathode roller is driven to rotate by a motor through the cathode roller shaft, and the cathode roller drives the shielding belt to operate.

[0005] Furthermore, the shielding belt includes two strips, the outer edges of the two shielding belts do not cross the corresponding side edges of the cathode roller, and the inner edges of the two shielding belts are straight-edge structures, so that a space for an electrolytic copper foil to be produced is formed between the two shielding belts. The shielding belt rotates closely against the surface of the cathode roller at the edge of the cathode roller. The length of the shielding belt can be determined according to the actual situation on site, and the width can be determined according to the customer's requirements for the width of the product. By adjusting the spacing between the two shielding belts, the width of the copper foil can be changed accordingly. For example, the customer requires the production of 80cm and 100cm wide copper foils. After the production of 80cm copper foil is completed, the spacing between the two shielding belts can be quickly adjusted to 100cm during the time period of changing the roll after the cathode roller is paused, and then a 100cm wide copper foil can be obtained.

[0006] Preferably, the shielding belt is a circulating belt made of fluorinated vinyl resin and has insulating properties.

[0007] Furthermore, the tensioning guide device includes a plurality of tensioning guide rollers, wherein a first tensioning guide roller and a second tensioning guide roller are arranged above the cathode roller, and a distance between the two is smaller than a diameter of the cathode roller, and the two shielding belts are respectively passed around opposite sides of the two tensioning guide rollers, and then led outward and upward in a bent manner to achieve tensioning of the shielding belts.

[0008] Furthermore, a third tensioning guide roller, a fourth tensioning guide roller and a fifth tensioning guide roller are respectively arranged above the first tensioning guide roller and the second tensioning guide roller, wherein the third tensioning guide roller is arranged above and outside the first tensioning guide roller, and the fifth tensioning guide roller is arranged above and outside the second tensioning guide roller, so that the distance between the third tensioning guide roller and the fifth tensioning guide roller is greater than the distance between the first tensioning guide roller and the second tensioning guide roller; the fourth tensioning guide roller is arranged above and outside the third tensioning guide roller, and the position of the fourth tensioning guide roller is higher than the third tensioning guide roller and the fifth tensioning guide roller, and each tensioning guide roller is aligned with the cathode roller on the vertical plane; the shielding belt passes from the first tensioning guide roller around the inner side of the third tensioning guide roller, passes around the outer side of the fourth tensioning guide roller, and then passes to the outer side of the fifth tensioning guide roller, and then passes through the second tensioning guide roller and returns to the cathode roller. The two shielding belts are tensioned by the tensioning guide rollers to make them close to the surface of the cathode roller to prevent electrodeposition caused by lateral seepage of electrolyte. At the same time, it is ensured that the shielding belts do not deviate and always run stably on the surface of the cathode roller at the required width.

[0009] Furthermore, side plates are installed on both sides of the cathode roller by fixing bolts, and the side plates can prevent the electrolyte from being plated onto the sides of the cathode roller, prevent the occurrence of tearing defects, and ensure the continuity, uniformity and consistency of the production process; the diameter of the side plate is equivalent to the diameter of the cathode roller; a U-shaped groove is provided between the annular surface of the cathode roller and the side plate to isolate the side plate from the cathode roller, so that the side plate is not close to the cathode roller, but has a certain distance therefrom.

[0010] The present invention provides a shielding belt with a certain interval on the cathode roller so that the shielding belt can be driven by the cathode roller to run, thereby achieving the following advantages: first, electrolytic copper foils of different widths can be prepared according to customer needs, reducing the scrap rate of edge materials, improving the product yield rate, and reducing production costs. Statistics show that the yield rate is increased by about 25.3% compared with the original process, the production capacity is increased by about 4.9%, and the power consumption of the foil machine per ton of finished foil is reduced by about 890 yuan; second, the width of the copper foil can be directly adjusted by the tensioning guide roller, without stopping to replace the cathode roller, thereby achieving continuous operation and improving production efficiency; third, the O-ring sealing device is cancelled, saving the cost of purchasing O-rings; fourth, because the shielding belt is in close contact with the surface of the cathode roller, the sealing effect is good, and copper foil copper powder and tearing defects will not be generated on the copper foil surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0012] Figure 2 It is a schematic diagram of the side structure of the present invention.

[0013] In the figure, 1 is the cathode roller shaft, 2 is the conductive ring, 3 is the cathode roller, 4 is the fixing bolt, 5 is the side plate, 6 is the U-shaped groove, 7 is the shielding belt, 8 is the first tensioning guide roller, 9 is the second tensioning guide roller, 10 is the third tensioning guide roller, 11 is the fourth tensioning guide roller, and 12 is the fifth tensioning guide roller. DETAILED DESCRIPTION

[0014] In this embodiment, refer to Figure 1 and Figure 2 The electrolytic copper foil raw foil system with controllable width includes a cathode roller 3, which is mounted on a cathode roller shaft 1, and a conductive ring 2 is mounted on the cathode roller shaft 1 to realize the electrification of the cathode roller 3; at least two shielding belts 7 are wound around the cathode roller 3, and the shielding belts 7 and the cathode roller 3 are synchronously operated structures; there is a gap between the shielding belts 7, which forms the raw foil space of the electrolytic copper foil, and the spacing between the shielding belts 7 is the radial width of the electrolytic copper foil; each shielding belt 7 is led out from the upper part of the cathode roller 3 and wound around the tensioning guide device, forming a circulation and tensioning structure of the shielding belt 7. The cathode roller 3 is driven to rotate by a motor through the cathode roller 7 shaft, and the cathode roller 3 drives the shielding belt 7 to operate.

[0015] The shielding belt 7 includes two strips, and the outer edges of the two shielding belts 7 do not cross the corresponding side edges of the cathode roller 3 (i.e., within the surface range of the cathode roller 3), and the inner edges of the two shielding belts 7 are straight-edge structures, so that a space for an electrolytic copper foil to be produced is formed between the two shielding belts 7. The shielding belt 7 rotates closely against the surface of the cathode roller 3 at the cathode roller edge 3. The length of the shielding belt 7 can be determined according to the actual situation on site, and the width can be determined according to customer requirements. By adjusting the spacing between the two shielding belts 7, the width of the copper foil can be changed accordingly. For example, if the customer requires the production of 80cm and 100cm wide copper foil, after the production of 80cm copper foil is completed, the spacing between the two shielding belts 7 can be quickly adjusted to 100cm by using the pause of the cathode roller 3, and then a 100cm wide copper foil can be obtained.

[0016] The shielding belt 7 is a circulating belt made of fluorinated vinyl resin and has insulating properties.

[0017] The tensioning guide device includes five tensioning guide rollers, wherein the first tensioning guide roller 8 and the second tensioning guide roller 9 are arranged above the cathode roller 3, and the distance between the two is smaller than the diameter of the cathode roller 3, so that the shielding belt 7 can be tensioned after passing around the first tensioning guide roller 8 and the second tensioning guide roller 9. The two shielding belts 7 pass around the opposite sides (inside) of the two tensioning guide rollers respectively, and then are led outward and upward in a bent manner to achieve tensioning of the shielding belt 7.

[0018] A third tensioning guide roller 10, a fourth tensioning guide roller 11 and a fifth tensioning guide roller 12 are respectively arranged above the first tensioning guide roller 8 and the second tensioning guide roller 9, wherein the third tensioning guide roller 10 is arranged above and outside the first tensioning guide roller 8, and the fifth tensioning guide roller 12 is arranged above and outside the second tensioning guide roller 9, so that the distance between the third tensioning guide roller 10 and the fifth tensioning guide roller 12 is greater than the distance between the first tensioning guide roller 8 and the second tensioning guide roller 9; the fourth tensioning guide roller 11 is arranged above and outside the third tensioning guide roller 10, and the position of the fourth tensioning guide roller 11 is higher than the third tensioning guide roller 10 and the fifth tensioning guide roller 12, and each tensioning guide roller is aligned with the cathode roller 3 on the vertical plane; the shielding belt 7 passes from the first tensioning guide roller 8 around the inner side of the third tensioning guide roller 10, passes around the outer side of the fourth tensioning guide roller 11, and then passes around to the outer side of the fifth tensioning guide roller 12, and then passes through the second tensioning guide roller 9 and goes back to the cathode roller 3. The two shielding belts 7 are tensioned by the tensioning guide rollers so that the shielding belts 7 are closely attached to the surface of the cathode roller 3 to prevent electrodeposition caused by lateral seepage of the electrolyte. At the same time, it is ensured that the shielding belts do not deviate and always run stably on the surface of the cathode roller 3 at the required width.

[0019] Side plates 5 are installed on both sides of the cathode roller 3 by fixing bolts 4. The side plates 5 can prevent the electrolyte from being plated onto the side of the cathode roller 3, prevent the occurrence of tearing defects, and ensure the continuity, uniformity and consistency of the production process; the diameter of the side plate 5 is equivalent to the diameter of the cathode roller 3; a U-shaped groove 6 is provided between the annular surface of the cathode roller 3 and the side plate 5 to isolate the side plate 5 from the cathode roller 3, so that the side plate 5 is not close to the cathode roller 3, but has a certain distance therefrom.

[0020] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A width-controllable electrolytic copper foil production system, comprising a cathode roller, the cathode roller is mounted on a cathode roller shaft, a conductive ring is mounted on the cathode roller shaft to realize the electrification of the cathode roller, and the characteristics are: At least two shielding belts are wound around the cathode roller, and the shielding belts and the cathode roller are synchronously operated structures; a gap is left between the shielding belts, and the gap forms the raw foil space of the electrolytic copper foil, and the spacing between the shielding belts is the radial width of the electrolytic copper foil; each shielding belt is led out from the upper part of the cathode roller and wound around the tensioning guide device, forming a circulation and tensioning structure of the shielding belt, and the shielding belt is driven to move by the rotation of the cathode roller.

2. The electrolytic copper foil production system with controllable width according to claim 1, characterized in that: The shielding belts include two, the outer edges of the two shielding belts do not go over the corresponding side edges of the cathode roller, and the inner edges of the two shielding belts are straight edge structures, so that a space for an electrolytic copper foil to be produced is formed between the two shielding belts.

3. The electrolytic copper foil production system with controllable width according to claim 1, characterized in that: The shielding belt is a circulating belt made of fluorinated vinyl resin and has insulating properties.

4. The electrolytic copper foil production system with controllable width according to claim 2, characterized in that: The tensioning guide device includes a plurality of tensioning guide rollers, wherein the first tensioning guide roller and the second tensioning guide roller are arranged above the cathode roller, and the distance between the two is smaller than the diameter of the cathode roller, and the two shielding belts are respectively passed around the opposite sides of the two tensioning guide rollers, and then led outward and upward in a bent manner.

5. The electrolytic copper foil production system with controllable width according to claim 4, characterized in that: A third tensioning guide roller, a fourth tensioning guide roller and a fifth tensioning guide roller are respectively arranged above the first tensioning guide roller and the second tensioning guide roller, wherein the third tensioning guide roller is arranged above and outside the first tensioning guide roller, and the fifth tensioning guide roller is arranged above and outside the second tensioning guide roller, so that the distance between the third tensioning guide roller and the fifth tensioning guide roller is greater than the distance between the first tensioning guide roller and the second tensioning guide roller; The fourth tensioning guide roller is arranged above and outside the third tensioning guide roller, and the position of the fourth tensioning guide roller is higher than the third tensioning guide roller and the fifth tensioning guide roller, and each tensioning guide roller is aligned with the cathode roller on the vertical plane; the shielding belt passes from the first tensioning guide roller around the inner side of the third tensioning guide roller, passes around the outer side of the fourth tensioning guide roller, and then passes to the outer side of the fifth tensioning guide roller, and then passes through the second tensioning guide roller and returns to the cathode roller.

6. The electrolytic copper foil production system with controllable width according to claim 1, characterized in that: Side plates are installed on both sides of the cathode roller by fixing bolts, and the diameter of the side plates is equivalent to the diameter of the cathode roller; a U-shaped groove is arranged between the annular surface of the cathode roller and the side plates to isolate the side plates from the cathode roller.

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