Cathode roller and electroplating processing system

Abstract

The utility model discloses a cathode roller and an electroplating processing system. The cathode roller comprises a main shaft and a cathode roller, the main shaft is sleeved with the roller body, the roller body and the main shaft coaxially rotate and are electrically connected, and the two opposite ends of the main shaft are exposed out of the roller body; the power supply part and the main shaft are arranged at an interval; the conductive lug boss is arranged on the main shaft and is electrically connected with the main shaft; when the main shaft rotates around the axis of the main shaft, the conductive protruding parts rotate along with the main shaft so that the conductive protruding parts and the power supply part can be electrically connected or disconnected, the electrolytic foil can be electroplated for multiple times at intervals only through one cathode roller, and then the roughness of the surface of the electrolytic foil can be reduced; the size of particles formed by electrolysis is reduced, the anti-stripping strength is enhanced, and the risk that the electrolytic foil falls off is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electroplating processing, and in particular to a cathode roller and an electroplating processing system. BACKGROUND

[0002] The cathode roller is one of the components of the electroplating processing system and is an important part for realizing the electroplating of electrolytic foil.

[0003] In the related art, the cathode roller usually performs long-time continuous electroplating on the electrolytic foil after each start, so that the electrolytic foil is completed roughening by long-time continuous electroplating once. However, the electrolytic foil produced by continuous electroplating has high roughness, large particle size, and is easy to fall off. CONTENT OF THE INVENTION

[0004] To solve the above technical problems, the embodiments of the present application provide a cathode roller and an electroplating processing system.

[0005] In a first aspect, the embodiments of the present application provide a cathode roller, comprising:

[0006] a main shaft 1;

[0007] a roller body 2, which is sleeved on the main shaft 1 and rotates coaxially with the main shaft 1 and is electrically connected to the main shaft 1, and the opposite ends of the main shaft 1 are exposed to the roller body 2;

[0008] a power supply part 3, which is arranged in a spaced manner with the main shaft 1; and

[0009] a conductive protruding part 4, which is arranged on the main shaft 1 and is electrically connected to the main shaft 1;

[0010] When the main shaft 1 rotates around its axis, the conductive protruding part 4 rotates with the main shaft 1 to realize the electrical conduction or disconnection between the conductive protruding part 4 and the power supply part 3.

[0011] Optionally, one side of the conductive protruding part 4 away from the main shaft 1 is configured as a convex arc surface, and one side of the power supply part 3 close to the main shaft 1 is configured as a concave arc surface matched with the convex arc surface;

[0012] When at least part of the convex arc surface and at least part of the concave arc surface are slidably connected, the conductive protruding part 4 and the power supply part 3 are electrically connected;

[0013] When the convex arc surface and the concave arc surface are separated, the conductive protruding part 4 and the power supply part 3 are electrically disconnected.

[0014] Optionally, the conductive protrusion 4 is partially annular in shape in a cross section perpendicular to the axis of the main shaft 1, and the projection of the convex arc surface in the cross section is an outer arc edge of the partially annular shape.

[0015] Optionally, the angle of the partially annular shape is greater than or equal to 30° and less than or equal to 180°.

[0016] Optionally, the conductive protrusion 4 is at least two, and the at least two conductive protrusions 4 are arranged at intervals along the circumference of the main shaft 1, and all the conductive protrusions 4 are used for conductive cooperation with the power supply part 3.

[0017] Optionally, the power supply part 3 comprises a carbon brush.

[0018] Optionally, the power supply part 3 is two groups, and the two groups of power supply parts 3 are arranged on the same side of the main shaft 1, and the two groups of power supply parts 3 correspond to opposite ends of the main shaft 1 respectively, and one group of power supply parts 3 forms a gap with the side surface of the corresponding end of the main shaft 1.

[0019] The conductive protrusion 4 is two groups, and the two groups of conductive protrusions 4 are arranged correspondingly to the two groups of power supply parts 3.

[0020] Optionally, each group of power supply parts 3 comprises at least two power supply parts 3, and each power supply part 3 in the same group is arranged around the circumference of the main shaft 1.

[0021] Optionally, the cathode roller further comprises:

[0022] The driving member is adapted to drive the main shaft 1 to rotate.

[0023] In a second aspect, the embodiments of the present application provide an electroplating processing system, comprising:

[0024] The cathode roller of any one of the above first aspect; and,

[0025] The copper foil to be processed is adapted to contact at least part of the outer surface of the roller body 2.

[0026] In summary, the embodiments of the present application have at least the following beneficial effects:

[0027] By using the embodiment of the present application, when the electrolytic foil needs to be electroplated, the electrolytic foil to be processed is first contacted with the roller body, and then the power supply to the cathode roller is intermittently turned on or turned off by driving the main shaft to rotate to control the on-off of the electrical connection between the conductive protruding part and the power supply part, so that the electrolytic foil can be electroplated multiple times at intervals by using only one cathode roller, and the power supply condition can be adjusted to achieve the effect of pulse current, reduce the roughness of the electrolytic foil surface, reduce the size of the electrolytic particles, enhance the peel strength, reduce the risk of electrolytic foil falling off, and compared with the traditional pulse current electroplating, the service life of the power supply can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic view of the cross section of the cathode roller provided by the embodiment of the present application;

[0029] Figure 2 is a schematic view of the front view of the cathode roller provided by the embodiment of the present application;

[0030] Figure 3 is a schematic view of the cross section of the cathode roller provided by the embodiment of the present application;

[0031] Figure 4 is a schematic view of the cross section of the cathode roller provided by the embodiment of the present application. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0033] In the description of the present application, the terms "first", "second", "third" and the like are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more. In the description of the present application, the term "including" and its variants are open inclusion, i.e. "including but not limited to". The term "based on" is "at least partially based on". The term "according to" is "at least partially according to". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments".

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit the application. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] Firstly, see [the following] Figure 1 and Figure 2 This application provides a cathode roller, comprising:

[0037] Spindle 1; exemplaryly, spindle 1 can typically be a generally cylindrical shaft capable of rotating about its own axis.

[0038] A roller body 2 is sleeved outside the main shaft 1 and is coaxially rotatable and electrically connected to the main shaft 1. The opposite ends of the main shaft 1 are exposed outside the roller body 2. Exemplarily, the inner wall of the roller body 2 can contact and be fixedly connected to the outer side of the main shaft 1, thereby achieving coaxial rotation and electrical connection between the roller body 2 and the main shaft 1; alternatively, there can be a gap between the inner wall of the roller body 2 and the outer side of the main shaft 1, and at least one conductive connector can be used to fix the inner wall of the roller body 2 and the outer side of the main shaft 1, thereby achieving coaxial rotation and electrical connection between the roller body 2 and the main shaft 1. A power supply unit 3 is spaced apart from the main shaft 1; and a conductive protrusion 4 is disposed on the main shaft 1 and electrically connected to the main shaft 1.

[0039] When the main shaft 1 rotates around its axis, the conductive protrusion 4 rotates with the main shaft 1 to achieve electrical connection or disconnection between the conductive protrusion 4 and the power supply unit 3.

[0040] Specifically, when the main shaft 1 rotates around its axis, the conductive protrusion 4 arranged on the main shaft 1 is driven to rotate around the axis so that the conductive protrusion 4 revolves around the axis. During the rotation of the conductive protrusion 4, the relative position between the conductive protrusion 4 and the power supply part 3 changes, thereby switching the electrical connection between the two between being on or off. When the electrical connection is on, the power supply part 3 supplies power to the conductive protrusion 4, so that the conductive protrusion 4 supplies power to the main shaft 1 and the roller body 2. At least part of the outer surface of the roller body 2 is adapted to be in contact with the copper foil to be processed, and when receiving the provided current, the copper foil to be processed is transmitted to the copper foil to be processed for electroplating.

[0041] In an example, the conductive protrusion 4 and the power supply part 3 can be in contact or separated from each other as the conductive protrusion 4 rotates. When in contact, the electrical connection is on, and when separated, the electrical connection is off. In another example, the principle of electromagnetic field can also be used, so that the conductive protrusion 4 and the power supply part 3 are not in direct contact when the conductive protrusion 4 rotates to a certain position, but the electrical connection can be realized through the electromagnetic field. Here, the principle of transformer double-sided winding can be referred to to understand that the electrical connection between the conductive protrusion 4 and the power supply part 3 can also be realized without direct contact. At this time, windings that can be electrically connected to each other can be arranged in the conductive protrusion 4 and the power supply part 3, respectively.

[0042] In this way, when roughening the copper foil by electroplating, the copper foil to be processed is first contacted with the roller body, and then the on-off of the electrical connection between the conductive protrusion and the power supply part is controlled by driving the main shaft to rotate, so as to intermittently power on or off the cathode roller, thereby realizing multiple electroplating of the electrolytic foil by using only one cathode roller. In turn, the roughness of the surface of the electrolytic foil can be reduced, the size of the electrolytic particles can be reduced, the peel strength can be enhanced, and the risk of electrolytic foil falling off can be reduced.

[0043] It can be understood that the embodiment can adjust the on-off duration of the electrical connection between the conductive protrusion 4 and the power supply part 3 by controlling the rotation speed of the main shaft 1. For example, when a long single electroplating duration is required, the rotation speed of the main shaft 1 can be controlled to decrease when the electrical connection between the conductive protrusion 4 and the power supply part 3 is on, so as to prolong the on duration and thus prolong the single electroplating duration. In addition, when a long interval duration between adjacent electroplating operations is required, the rotation speed of the main shaft 1 can be controlled to decrease when the electrical connection between the conductive protrusion 4 and the power supply part 3 is off, so as to prolong the off duration and thus prolong the interval duration between adjacent electroplating operations.

[0044] In one example, the conductive protrusion 4 can be arranged on the spindle 1 corresponding to the power supply part 3. Here, the conductive protrusion 4 can be arranged corresponding to the power supply part 3 so that the conductive protrusion 4 and the power supply part 3 are in contact with each other or separated from each other during rotation, or so that the conductive protrusion 4 can rotate to the specific position during rotation. At this time, when the spindle 1 rotates around its axis, the conductive protrusion 4 rotates with the spindle 1 so that at least part of the conductive protrusion 4 can enter the gap between the conductive protrusion 4 and the power supply part 3, and when entering the gap, at least part of the conductive protrusion 4 contacts the power supply part 3 to realize electrical conduction between them, or when entering the gap, the conductive protrusion 4 is located at the specific position and realizes electrical conduction between them by using the principle of electromagnetic field.

[0045] In one example, the power supply part 3 can be electrically connected with an external power source, or can be powered by an internal power source arranged in the power supply part 3, which is not specifically limited here.

[0046] In one example, the spindle 1 can be internally defined with a cooling water channel, and cooling water can flow through the cooling water channel to cool the spindle 1 and the components connected to the spindle 1.

[0047] In one example, the conductive protrusion 4 can be made of copper.

[0048] In an alternative embodiment, the side of the conductive protrusion 4 away from the spindle 1 is configured as a convex arc surface, and the side of the power supply part 3 close to the spindle 1 is configured as a concave arc surface matching the convex arc surface.

[0049] When the conductive protrusion 4 enters the gap, at least part of the convex arc surface and at least part of the concave arc surface are slidably connected to realize electrical conduction between the conductive protrusion 4 and the power supply part 3. For example, see Figure 3 At this time, part of the conductive protrusion 4 has entered the gap between the spindle 1 and the power supply part 3, and part of the convex arc surface and part of the concave arc surface are in contact with each other to realize electrical conduction.

[0050] After the conductive protrusion 4 leaves the gap, the convex arc surface and the concave arc surface are separated to realize electrical disconnection between the conductive protrusion 4 and the power supply part 3. For example, see Figure 1 At this time, the conductive protrusion 4 completely leaves the gap between the spindle 1 and the power supply part 3, so that the convex arc surface and the concave arc surface are separated, thereby realizing electrical disconnection between the conductive protrusion 4 and the power supply part 3.

[0051] In the embodiment, the electrical conduction can be realized by the direct contact between the conductive protrusion 4 and the power supply part 3, the internal structures of the conductive protrusion 4 and the power supply part 3 are simplified, and the reliability and stability of the electrical connection between the two are improved, avoiding the electrical connection from being interfered by the electromagnetic interference of the external environment, so that the intermittent power supply to the cathode roller can be more accurately and stably controlled, the roughness of the surface of the electrolytic foil is reduced, the size of the electrolytic particles is reduced, the anti-peeling strength is enhanced, and the risk of the electrolytic foil falling off is reduced.

[0052] It can be understood that the shapes (for example, the curvature) of the mutually matched convex arc surface and the concave arc surface are matched, so that at least part of the convex arc surface and at least part of the concave arc surface can be attached to each other when in contact, and relative sliding between at least part of the convex arc surface and at least part of the concave arc surface is realized as the conductive protrusion 4 rotates, at which time the attachment of at least part of the convex arc surface and at least part of the concave arc surface can be maintained during the sliding process to ensure the continuous conduction of the electrical connection.

[0053] In an alternative embodiment, the conductive protrusion 4 is partially annular in shape in a cross section perpendicular to the axis direction of the main shaft 1, and the projection of the convex arc surface in the cross section is the outer arc edge of the partially annular shape.

[0054] In an example, referring to Figure 1 , Figure 3 , the cross section shown in Figure 1 , Figure 3 is a cross section perpendicular to the axis direction of the main shaft 1, in which the conductive protrusion 4 is partially annular in shape in the cross section, which can be understood as a part of a complete annular shape or an arc shape, so as to facilitate the processing and manufacturing of the conductive protrusion 4, for example, referring to Figure 4 , a part can be directly cut from a complete annular ring 6 to serve as the conductive protrusion 4.

[0055] In an alternative embodiment, the angle of the partially annular shape is greater than or equal to 30° and less than or equal to 180°.

[0056] Specifically, the embodiment specifically limits the angle of the partially annular shape to be greater than or equal to 30° and less than or equal to 180°, and exemplarily, the angle of the partially annular shape can be 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115°, 120°, 125°, 130°, 135°, 140°, 145°, 150°, 155°, 160°, 165°, 170°, 175°, and the like.

[0057] In the embodiment, the specific angle of the partial circular ring can be adjusted according to different electrolysis requirements, so that the on / off time of the electrical connection can be adjusted by replacing the conductive protruding part 4 with a corresponding angle without changing or greatly changing the rotation speed of the main shaft 1, so as to adapt to the corresponding electrolysis requirements. For example, in some cases, the rotation speed of the main shaft 1 can be substantially constant, and the above adjustment can be made by replacing the conductive protruding part 4. It is not difficult to understand that when the rotation speed is constant, the smaller the angle of the partial circular ring, the smaller the on time of the electrical connection.

[0058] In an alternative embodiment, the conductive protruding part 4 is at least two, and the at least two conductive protruding parts 4 are arranged along the circumference of the main shaft 1, and all the conductive protruding parts 4 are used for conductive cooperation with the power supply part 3.

[0059] Specifically, the conductive protruding part 4 can be at least two in the embodiment, and the at least two conductive protruding parts 4 can be arranged along the circumference of the main shaft 1, and all the conductive protruding parts 4 can be used for conductive cooperation with the power supply part 3 by any of the above embodiments to realize electrical conduction or disconnection.

[0060] In the embodiment, the conductive protruding part 4 can be processed into one or more standard sizes, for example, the angle of the partial circular ring is 30°, and then when the on / off time of the electrical connection needs to be adjusted, the number of conductive protruding parts 4 with standard sizes can be adjusted to adjust the on / off time of the electrical connection without changing or greatly changing the rotation speed of the main shaft 1, so as to adapt to the corresponding electrolysis requirements.

[0061] In an alternative embodiment, the power supply part 3 includes a carbon brush.

[0062] It should be noted that the carbon brush is suitable for electrical connection with a power source, which can be included in the power supply part 3 or can be an external power source. The carbon brush is a conductive element, usually made of graphite or graphite impregnated with metal powder, used to transmit current between rotating parts (conductive protruding part 4 driven to rotate by the main shaft 1) and fixed parts (power source suitable for electrical connection with the carbon brush). For example, the number of carbon brushes can be adjusted as needed, for example, one power supply part 3 can include one carbon brush, or one power supply part 3 can include at least two carbon brushes, which is not specifically limited here.

[0063] In this embodiment, a carbon brush is used in the cathode roller for power supply, which has at least one of the following benefits: high conductivity: the carbon brush material has good conductivity, which can effectively transmit current and ensure the stable progress of electrochemical reaction. Low contact resistance: the contact resistance between the carbon brush and the rotating part is low, which reduces energy loss and improves the overall efficiency of the system. Reduce friction: the carbon brush material itself has a certain lubricity, which can reduce the friction between the rotating part and prolong the service life of the equipment. Reduce wear: due to its self-lubricating property, the wear between the carbon brush and the rotating part is small, which reduces the maintenance frequency and cost. Suitable for high-speed rotation: the carbon brush can work stably at high speed, which is suitable for cathode roller applications that require high-speed operation. High temperature resistance: the carbon brush can work at high temperature and is not easy to fail due to overheating, which is suitable for electroplating and electrolysis processes in high temperature environment. Simple and easy to replace: the carbon brush is designed as a replaceable component, which is convenient for regular inspection and maintenance, reducing downtime. Low-cost maintenance: compared with other conductive methods (such as sliding contactors), the carbon brush has lower cost and is easy to replace, reducing the long-term maintenance cost. Strong pressure resistance: the carbon brush has good mechanical strength and can maintain stable contact state under certain pressure, avoiding arc or spark phenomenon caused by poor contact. Impact resistance: the carbon brush can resist mechanical impact to some extent and is suitable for applications in environments with more vibration. No pollution: the carbon brush does not produce harmful substances under normal working conditions and is environmentally friendly. Reduce the risk of fire: due to its self-lubricating property and low contact resistance, the carbon brush reduces the arc and spark caused by poor contact, thereby reducing the risk of fire. Multiple contact points: the carbon brush can evenly distribute current through multiple contact points, avoiding local overload or heating problems. Adapt to different shapes of contact surface: the carbon brush can be customized into different shapes and sizes according to actual needs to adapt to various complex contact surfaces.

[0064] In an alternative embodiment, the power supply part 3 is two groups, and the two groups of power supply parts 3 are arranged on the same side of the main shaft 1, and each group of power supply parts 3 corresponds to one end of the main shaft 1. One group of power supply parts 3 is spaced apart from the side surface corresponding to one end of the main shaft 1.

[0065] The conductive protruding part 4 is two groups, and the two groups of conductive protruding parts 4 are arranged corresponding to the two groups of power supply parts 3.

[0066] Specifically, referring to Figure 2 , the two groups of power supply parts 3 are arranged on the same side of the main shaft 1 corresponding to the opposite ends of the main shaft 1, for example, simultaneously located Figure 2Above the main shaft 1 (not shown in the figure), at this time, the two groups of conductive protrusions 4 correspond to the two groups of power supply parts 3, which are respectively arranged on the side surfaces of the opposite ends of the main shaft 1, and it is not difficult to understand that the two groups of conductive protrusions 4 here should also be arranged on the same side of the main shaft 1, so that when the main shaft 1 rotates, the two groups of conductive protrusions 4 can be approximately simultaneously connected with the respective corresponding power supply parts 3 to establish a conductive electrical connection.

[0067] In the present embodiment, the electrically matched conductive protrusions 4 and power supply parts 3 are respectively arranged at the opposite ends of the main shaft 1, which can have at least one of the following beneficial effects: reducing current density difference: two-end power supply can ensure that the current is more evenly distributed on the cathode roller, avoiding local overheating or excessive current density. Improve plating quality: uniform current distribution helps to reduce the roughness of the electrolytic foil surface during electroplating, reduce the size of the electrolytic particles, enhance the peel strength, and reduce the risk of electrolytic foil falling off. Reduce wire resistance: when the current passes through a longer conductor, a certain resistance loss will be generated, resulting in energy loss and heating. Two-end power supply can significantly reduce the current intensity in each conductor, thereby reducing resistance loss and improving system efficiency. Reduce voltage drop: single-end power supply may cause a large voltage drop at the far end, affecting the electroplating effect. Two-end power supply can effectively reduce the voltage drop, ensuring that the voltage on the surface of the entire cathode roller is roughly the same. Balance the load: two-end power supply can better balance the electrical load, avoiding the asymmetric stress and mechanical deformation problems caused by single-side power supply, prolonging the service life of the equipment. Improve reliability: if the power supply at one end fails (such as carbon brush wear or poor contact), the other end can still continue to supply power, providing redundancy protection to prevent production interruption. Support high-current applications: in some high-current applications, single-end power supply may not meet the current transmission requirements, easily causing overheating and other problems. Two-end power supply can support higher power requirements by dispersing the current, suitable for large-scale electroplating production lines. Improve heat dissipation effect: since the current is dispersed to both ends, less heat is generated on each conductor, which is conducive to overall heat dissipation and maintains stable system operation. Reduce mechanical stress: single-end power supply may cause the cathode roller to bear a large mechanical stress at one end, increasing the risk of fatigue damage to the components. Two-end power supply can balance the mechanical stress and reduce mechanical failures caused by unbalanced forces. Improve rotational balance: the design of double-end power supply helps to maintain the rotational balance of the cathode roller, reducing vibration and noise, and improving the smooth operation of the equipment. Simplify maintenance work: two-end power supply makes the current at each power supply point smaller, and the wear of carbon brushes and other contact components is relatively low, reducing the need for frequent replacement and lowering maintenance costs. Quickly troubleshoot: if there is a power supply problem, the two-end power supply design makes it easier to locate and eliminate the fault, improving the maintainability of the system.

[0068] In an alternative embodiment, each group of power supply parts 3 includes at least two power supply parts 3, and the power supply parts 3 of the same group are arranged around the circumference of the main shaft 1.

[0069] Specifically, referring to Figure 1 and Figure 3 , at this time, each group of power supply parts 3 can have at least two (for example, 4 in the figure), and each power supply part 3 of the same group is arranged around the circumference of the main shaft 1 (which can be arranged at equal intervals or at unequal intervals, which is not specifically limited here), so that the corresponding power supply part 3 can realize electrical conduction with the conductive protruding part 4 when the position between any one or more power supply parts 3 and the conductive protruding part 4 is matched (for example, the surfaces contact each other).

[0070] In the present embodiment, the power supply parts 3 of the same group are divided into at least two power supply parts 3, which can be made in standard size in advance, and then the position range in which the power supply parts 3 of the same group can realize electrical conduction with the conductive protruding part 4 is adjusted by adjusting the number and / or interval distance of the power supply parts 3 in the same group, further facilitating the rapid adjustment of the position range.

[0071] In an alternative embodiment, the cathode roller further comprises:

[0072] The driving member is adapted to drive the main shaft 1 to rotate.

[0073] In one example, referring to Figures 1-3 , the driving member is fixedly sleeved outside the main shaft 1 and coaxially arranged with the main shaft 1, and the driving member is adapted to rotate around the axis of the main shaft 1 under the action of driving force to drive the main shaft 1 to rotate around the axis, so that the rotation speed of the driving member can be accurately controlled by adjusting the above-mentioned driving force, so as to accurately control the rotation speed of the main shaft 1. Wherein, the driving member is connected to the power system, and the power system is adapted to provide the above-mentioned driving force to the driving member.

[0074] In one example, referring to Figures 1-3 , the driving member can include a gear 5 mechanically connected to the power system.

[0075] In a second aspect, the embodiments of the present application provide an electroplating processing system, comprising: a cathode roller; and a copper foil to be processed, adapted to contact at least part of the outer surface of the roller body 2. In order to fully embody the beneficial effects of the electroplating processing system provided by the embodiments of the present application, the following will be described by specific test data.

[0076] Embodiments:

[0077] An electroplating processing system, comprising a cathode roller and a copper foil to be processed;

[0078] Wherein, the cathode roller comprises:

[0079] The main shaft 1;

[0080] The roller body 2 has at least a part of its outer surface adapted to contact the copper foil to be processed, the roller body 2 is sleeved on the main shaft 1 and rotates coaxially with the main shaft 1 and is electrically connected with the main shaft 1, and opposite ends of the main shaft 1 are exposed to the roller body 2;

[0081] The power supply part 3 is arranged apart from the main shaft 1; and

[0082] The conductive protruding part 4 is arranged on the main shaft 1 and is electrically connected with the main shaft 1;

[0083] When the main shaft 1 rotates around its axis, the conductive protruding part 4 rotates with the main shaft 1 to realize electrical conduction or disconnection between the conductive protruding part 4 and the power supply part 3.

[0084] Comparative example:

[0085] The electroplating processing system comprises a cathode roller and a copper foil to be processed;

[0086] The cathode roller comprises: Figure 4

[0087] The main shaft;

[0088] The roller body has at least a part of its outer surface adapted to contact the copper foil to be processed, the roller body is sleeved on the main shaft and rotates coaxially with the main shaft and is electrically connected with the main shaft, and opposite ends of the main shaft are exposed to the roller body;

[0089] The conductive ring is sleeved on the main shaft;

[0090] The power supply part contacts one side of the conductive ring away from the main shaft.

[0091] Under the same process parameters, the copper foils to be processed are respectively electroplated by using the above-mentioned examples and the comparative example, wherein the roughness of the copper foils to be processed before electroplating is the roughness of the raw foils, and the roughness Rz of the copper foils after electroplating is measured, and the results are shown in Table 1 as follows:

[0092] Table 1

[0093]

[0094]

[0095] From the above Table 1, it can be seen that:

[0096] The average roughness Rz of the copper foil obtained by continuously electroplating for 12 seconds in the comparative example is 2.579 μm, compared with the average roughness Rz of the raw foil 1.813 μm, the average roughness Rz increases by 0.766 μm;

[0097] ​The roughness Rz average of the copper foil obtained by adopting the embodiment and interval plating for two times, each time for 6s, is 2.502pm, which is increased by 0.689pm compared with the roughness Rz average of the raw foil 1.813pm. It can be seen that the roughness average is increased, which is smaller compared with the continuous plating for 12s in the comparative example. That is, interval plating can obtain a copper foil with lower roughness, so that the obtained plating particles are smaller and more uniform, the size of the electrolytic particles is reduced, the peel strength is enhanced, and the risk of electrolytic foil falling off is reduced.

[0098] The roughness Rz average of the copper foil obtained by adopting the embodiment and interval plating for four times, each time for 3s, is 2.408pm, which is increased by 0.595pm compared with the roughness Rz average of the raw foil 1.813pm. It can be seen that the roughness average is increased, which is smaller compared with the copper foil obtained by adopting the embodiment and interval plating for two times, each time for 6s. That is, interval plating for four times can obtain a copper foil with lower roughness, so that the obtained plating particles are smaller and more uniform, the size of the electrolytic particles is reduced, the peel strength is enhanced, and the risk of electrolytic foil falling off is reduced.

[0099] Obviously, the copper foil obtained by adopting the embodiment and interval plating for four times, each time for 3s, has the smallest roughness of the roughening layer, thereby verifying that the plating processing system provided by the embodiment can obtain smaller and more uniform plating particles, the size of the electrolytic particles is smaller, the peel strength is enhanced, and the risk of electrolytic foil falling off is reduced.

[0100] In summary, the embodiment has at least the following beneficial effects:

[0101] By adopting the embodiment, when the electrolytic foil needs to be plated, the electrolytic foil to be processed is first contacted with the roller body, and then the on-off of the electrical connection between the conductive protrusion and the power supply part is controlled by driving the main shaft to rotate, so as to intermittently power or power off the cathode roller, thereby realizing that the electrolytic foil can be plated multiple times by using only one cathode roller, and the roughness of the electrolytic foil surface can be reduced, the size of the electrolytic particles can be reduced, the peel strength can be enhanced, and the risk of electrolytic foil falling off can be reduced.

[0102] The above is the preferred embodiment of the present application. It should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements are also considered within the protection scope of the present application.

Claims

1. A cathode roller characterized by, Comprising: a main shaft (1); a roller body (2) sleeved on the main shaft (1) and coaxially rotating with the main shaft (1) and electrically connected with the main shaft (1), opposite ends of the main shaft (1) being exposed out of the roller body (2); a power supply part (3) arranged in a spaced manner with the main shaft (1); and a conductive protruding part (4) arranged on the main shaft (1) and electrically connected with the main shaft (1); wherein, when the main shaft (1) rotates around its axis, the conductive protruding part (4) rotates with the main shaft (1) to realize electrical conduction or disconnection between the conductive protruding part (4) and the power supply part (3).

2. The cathode roller according to claim 1, wherein a side of the conductive protruding part (4) facing away from the main shaft (1) is configured as a convex arc surface, and a side of the power supply part (3) close to the main shaft (1) is configured as a concave arc surface matched with the convex arc surface; when at least part of the convex arc surface and at least part of the concave arc surface are slidably connected, the conductive protruding part (4) and the power supply part (3) are electrically connected; when the convex arc surface and the concave arc surface are separated, the conductive protruding part (4) and the power supply part (3) are electrically disconnected.

3. The cathode roller according to claim 2, wherein in a cross section perpendicular to the axis direction of the main shaft (1), the conductive protruding part (4) is in a partial circular ring shape, and a projection of the convex arc surface in the cross section is an outer arc edge of the partial circular ring shape.

4. The cathode roller according to claim 3, wherein an angle of the partial circular ring shape is greater than or equal to 30° and less than or equal to 180°.

5. The cathode roller according to claim 4, wherein the conductive protruding part (4) is at least two, at least two of the conductive protruding parts (4) are arranged in a spaced manner along the circumferential direction of the main shaft (1), and all the conductive protruding parts (4) are used for electrically connecting with the power supply part (3).

6. The cathode roller according to claim 1, wherein the power supply part (3) comprises a carbon brush.

7. The cathode roller according to claim 1, wherein the power supply part (3) is two groups, two groups of the power supply part (3) are arranged on the same side of the main shaft (1), two groups of the power supply part (3) correspond to opposite ends of the main shaft (1) respectively, and one group of the power supply part (3) forms a space with a side surface of the corresponding end of the main shaft (1); the conductive protruding part (4) is two groups, two groups of the conductive protruding part (4) are arranged correspondingly to two groups of the power supply part (3).

8. The cathode roller according to claim 7, wherein each group of the power supply part (3) comprises at least two of the power supply part (3), and each of the power supply part (3) in the same group is arranged around the circumferential direction of the main shaft (1). The cathode roller further comprises:

9. The cathode roller according to any one of claims 1 to 8, characterized in that a driving member adapted to drive the main shaft (1) to rotate. Comprising:

10. An electroplating process system characterized by, the cathode roller according to any one of claims 1-9; and a copper foil to be processed adapted to contact at least part of an outer surface of the roller body (2). ​

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