A method of applying silver

Abstract

This invention addresses the problem of low production efficiency for silver-plated products in the field of electronic component manufacturing equipment by disclosing a silver plating method comprising the following steps: feeding, adding coating liquid into a material tank, and placing the product to be silver-plated into a feeding mechanism; transporting, the feeding mechanism delivers the product to a rotating wheel, a magnetic wheel causes the product to adhere to the rotating wheel, a first power component drives the feeding roller to rotate, and the coating liquid in the material tank adheres to the surface of the feeding roller; coating, the rotating wheel and the feeding roller rotate synchronously, the surface of the product on the rotating wheel contacts the coating liquid on the feeding roller, and the coating liquid on the feeding roller coats the surface of the product; discharging, the unloading mechanism discharges the product from the rotating wheel.

Description

Technical Field

[0001] This invention relates to the field of electronic component manufacturing equipment technology, and in particular to a silver plating method. Background Technology

[0002] Existing surface mount silver plating methods typically involve arranging several products on a plate fixture, and then using a robotic arm to move the fixture to contact the silver plating tray, allowing the products to come into contact with the silver plating and adhere it to the product surface. While this method allows for mass production, the extremely small size of surface mount components necessitates a significant amount of time beforehand for preparing and arranging the products on the fixture. Furthermore, the plate fixture cannot adequately cover every product during silver plating, resulting in inconsistent silver plating quality for each product, low production quality, and low work efficiency. Summary of the Invention

[0003] This invention provides a silver-plating method, which aims to at least solve one of the technical problems existing in the prior art.

[0004] The technical solution of this invention is a silver-plating method applied to a silver-plating machine, the silver-plating machine comprising:

[0005] support;

[0006] The conveying mechanism includes a magnetic wheel, a rotating wheel, and a second power component. The rotating wheel is rotatably mounted on the bracket and has an inner cavity. The magnetic wheel is disposed in the inner cavity and has a notch on its outer wall. The second power component is connected to the rotating wheel and drives the rotating wheel to rotate relative to the magnetic wheel.

[0007] The coating mechanism includes a material tank, a feeding roller, and a first power component. The material tank is used to store coating liquid. The feeding roller is rotatably mounted on the support. The first power component is connected to the feeding roller and is used to drive the feeding roller to rotate and coat the product with the coating liquid in the material tank.

[0008] A feeding mechanism is mounted on the support, and the feeding mechanism is used to transport the product to the rotating wheel;

[0009] A feeding mechanism is provided at the notch, and the feeding mechanism is used to transport the product out of the rotating wheel;

[0010] The silvering method includes the following steps:

[0011] Add material: Add coating liquid to the material tank, and place the product to be coated with silver into the feeding mechanism;

[0012] The transport and feeding mechanism delivers the product to the rotating wheel. The magnetic wheel causes the product to be attracted to the rotating wheel. The first power component drives the feeding roller to rotate, and the coating liquid in the trough adheres to the surface of the feeding roller.

[0013] Coating: The rotating wheel and the feeding roller rotate synchronously, and the product surface on the rotating wheel comes into contact with the coating liquid on the feeding roller, so that the coating liquid on the feeding roller is applied to the product surface.

[0014] The product is discharged by the feeding mechanism, which discharges the product from the rotating wheel.

[0015] Furthermore, the feeding mechanism includes a vibratory plate, into which the product to be coated with silver is placed. The vibratory plate arranges the messy products neatly and transports the neat products one by one onto the rotating wheel.

[0016] Furthermore, the material tank is equipped with a feeding port, into which the coating liquid is added.

[0017] Furthermore, it also includes a limiting plate, which is disposed on the bracket. A limiting gap is provided between the limiting plate and the rotating wheel. After the rotating wheel moves the product to the limiting gap, the limiting plate adjusts the product to the same height.

[0018] Furthermore, a scraper is provided on the feeding roller, which scrapes away excess coating liquid on the feeding roller to ensure that the coating liquid thickness on the feeding roller is consistent.

[0019] Furthermore, the rotating wheel and the feeding roller have the same linear velocity but opposite directions.

[0020] Furthermore, the feeding mechanism includes a third power component and a first guide pipe, wherein the third power component drives the product on the rotating wheel to be discharged from the rotating wheel along the first guide pipe.

[0021] Furthermore, it also includes a drying step. The silver coating machine also includes a heating mechanism. After the rotating wheel transports the product to the drying tank, the heating mechanism uses the coating liquid to dry the product.

[0022] Furthermore, the heating mechanism includes a drying tank and a heating element. The heating element is installed on the drying tank and heats the drying tank. The product is conveyed along the rotating wheel and transported along the drying tank.

[0023] Furthermore, the material tank is provided with a feeding port, through which the coating liquid is added to the material tank.

[0024] The beneficial effects of this invention are as follows.

[0025] 1. The magnetic wheel is fixed on the bracket, and the rotating wheel is set outside the magnetic wheel. The rotating wheel can rotate relative to the magnetic wheel. The product part is made of iron. The product is magnetically connected to the magnetic wheel, so that the product can be adsorbed on the surface of the first track. With the movement of the rotating wheel, the products can be arranged sequentially on the first track. The products can be transported and coated with silver one by one. The height of the products on the rotating wheel is consistent, and the depth of the products into the coating liquid is the same. The rest of the product will not be coated with the coating liquid, thus improving the quality of silver coating.

[0026] 2. The outer wall of the magnetic wheel has a notch, while the rotating wheel has a normal circular structure. The distance between the outer wall of the magnetic wheel at the notch position and the corresponding outer wall of the rotating wheel is relatively far, resulting in a lower magnetic attraction force at the notch position. This makes it easier for the product to separate from the rotating wheel, facilitating product transportation.

[0027] 3. When the feeding roller rotates, the coating liquid will adhere to the surface of the feeding roller. The first track transports the product, and the transport speed of the first track is the same as the linear speed of the rotation of the feeding roller. The product passes through the coating hole between the first track and the feeding roller, and the coating comes into contact with the product, so that the coating adheres to the product surface. The coating liquid is applied to the product one by one, resulting in a good silvering effect.

[0028] 4. The entire process only requires handling the product application and adding the coating liquid; no other operations are needed to complete the entire process, effectively improving the silver coating efficiency. Attached Figure Description

[0029] Figure 1 This is an overall structural diagram of the silver-plating machine according to an embodiment of the present invention;

[0030] Figure 2 This is a front view structural diagram of the silver-plating machine according to an embodiment of the present invention;

[0031] Figure 3 This is a cross-sectional structural diagram of the silver-plating machine according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the conveying mechanism according to an embodiment of the present invention;

[0033] Figure 5 yes Figure 3 A schematic diagram of the conveyor mechanism after the rotating wheel has been removed;

[0034] Figure 6 This is a schematic diagram of the structure of the magnetic wheel according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the coating mechanism according to an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the heating mechanism according to an embodiment of the present invention.

[0037] Icon labels:

[0038] Bracket 100;

[0039] Conveying mechanism 200, magnetic wheel 210, notch 211, rotating wheel 220;

[0040] The coating mechanism 300, the material trough 310, the feeding roller 320, the scraper 330, and the coating wheel 340 are included.

[0041] Feeding mechanism 400, vibratory feeder 410, steering conveyor belt 420;

[0042] 500 feeding mechanism;

[0043] Heating mechanism 600, drying tank 610, heating element 620. Detailed Implementation

[0044] The following will describe several embodiments of the present invention, including embodiments corresponding to the accompanying drawings. It should be understood that the drawings are used to assist in understanding the technical features and technical solutions of the present invention, and should not be construed as limiting the scope of protection of the present invention.

[0045] The following will provide a clear and complete description of the concept, specific structure, and technical effects of the present invention in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of the present invention. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0046] It should be noted that, unless otherwise explicitly defined, when a feature is referred to as "fixed," "connected," or "installed" on another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. The terms "fixed," "connected," and "installed" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0047] It should be noted that the descriptions of orientations or positional relationships indicated by terms such as up, down, left, right, top, bottom, front, back, inside, and outside used in this invention are based on the orientations or positional relationships indicated by the accompanying drawings or embodiments. They are only for the purpose of facilitating the description of this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] It should be noted that the term "and / or" as used in this invention includes any combination of one or more of the related listed items, "several" means one or more, "multiple" means two or more, "greater than", "less than", "exceeding" are understood to exclude the number itself, and "above", "below", "within" are understood to include the number itself.

[0049] It should be noted that the use of "first" and "second" in this invention is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or the order of the technical features.

[0050] It should be noted that, unless otherwise expressly defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and not for limiting the invention.

[0051] It should be noted that the arrows in the cross-sectional view point in the opposite direction to indicate the product transport direction.

[0052] Reference Figures 1 to 8 According to an embodiment of the present invention, a silver-plating method is applied to a silver-plating machine.

[0053] Silver-plating machines include:

[0054] Bracket 100;

[0055] The conveying mechanism 200 includes a magnetic wheel 210, a rotating wheel 220, and a second power component. The rotating wheel 220 is rotatably mounted on the support 100 and has an inner cavity. The magnetic wheel 210 is disposed in the inner cavity and has a notch 211 on its outer wall. The second power component is connected to the rotating wheel 220 and drives the rotating wheel 220 to rotate relative to the magnetic wheel 210.

[0056] The coating mechanism 300 includes a material tank 310, a feeding roller 320, and a first power component. The material tank 310 is used to store coating liquid. The feeding roller 320 is rotatably mounted on the support 100. The first power component is connected to the feeding roller 320 and is used to drive the feeding roller 320 to rotate and coat the product with the coating liquid in the material tank 310.

[0057] A feeding mechanism 400 is disposed on the support 100, and the feeding mechanism 400 is used to transport the product to the rotating wheel 220;

[0058] A feeding mechanism 500 is provided at the notch 211, and the feeding mechanism 500 is used to transport the product out of the rotating wheel 220;

[0059] The silver plating method includes the following steps:

[0060] Add material: Add coating liquid into material tank 310, and place the product to be coated with silver into the feeding mechanism 400;

[0061] During transportation, the feeding mechanism 400 delivers the product to the rotating wheel 220, and the magnetic wheel 210 causes the product to be adsorbed onto the rotating wheel 220. The first power component drives the feeding roller 320 to rotate, and the coating liquid in the material trough 310 adheres to the surface of the feeding roller 320.

[0062] Coating: The rotating wheel 220 and the feeding roller 320 rotate synchronously, and the product surface on the rotating wheel 220 comes into contact with the coating liquid on the feeding roller 320, so that the coating liquid on the feeding roller 320 is coated onto the product surface.

[0063] The product is discharged by the feeding mechanism 500, which discharges the product from the rotating wheel 220.

[0064] The magnetic wheel 210 is fixed on the bracket 100 and is located inside the rotating wheel 220. The rotating wheel 220 can rotate relative to the magnetic wheel 210. The product is magnetically connected to the magnetic wheel 210, allowing the product to be adsorbed onto the surface of the rotating wheel 220. As the rotating wheel 220 moves, the products can be arranged sequentially on it, enabling individual transport and silver plating, thus improving the silver plating quality. The outer wall of the magnetic wheel 210 has a notch 211. The rotating wheel 220 has a normal circular structure. The outer wall of the magnetic wheel 210 at the notch 211 is connected to the rotating wheel 220. The relatively large distance between the outer wall at position 0 and position 211 results in a lower magnetic attraction force on the magnetic wheel 210, making it easier for the product to separate from the rotating wheel 220 and facilitating product transportation. By rotating the feeding roller 320, the coating liquid can be continuously adhered to the feeding roller 320. The combined movement of the conveying mechanism 200 and the feeding roller 320 ensures that the coating liquid can be continuously applied to the product. The entire process only requires handling the product feeding and coating liquid addition operations, and no other operations are needed to complete the entire process, effectively improving the silver coating efficiency and reducing labor costs.

[0065] It is understood that the coating liquid here is not limited to silver liquid, but can be a variety of different liquids. This silver coating method can be applied to different liquid coating techniques. The silver coating used in this specification is only for describing specific embodiments and is not intended to limit the invention.

[0066] Understandably, some parts of the product structure are made of materials such as iron, nickel, or cobalt that can be magnetically connected to the magnetic wheel 210, so the product can be adsorbed onto the rotating wheel 220.

[0067] It is understandable that the first power component can be a motor located at the axis of the rotating wheel 220, with a connecting rod structure in the middle of the rotating wheel 220 connected to the output end of the motor. When the motor is turned on, the rotating wheel 220 rotates. Alternatively, the first power component can be a drive wheel located on the outside of the rotating wheel 220, which is rotatably connected to the rotating wheel 220 and tangent to it. The drive wheel drives the rotating wheel 220 to rotate relative to the magnetic wheel 210.

[0068] It is understandable that the rotating wheel 220 can be fully enclosed or open. In a fully enclosed manner, the inner cavity is completely located inside the rotating wheel 220, and the magnetic wheel 210 is installed in the inner cavity of the rotating wheel 220 without contacting the external environment. In an open manner, the rotating wheel 220 is provided with a through hole or a groove extending along its axial direction, and the magnetic wheel 210 is installed in the inner cavity of the rotating wheel 220 through the hole or groove.

[0069] It is understandable that the notch 211 of the magnetic wheel 210 has a circular cross-section, while the cross-section of the wheel structure with the notch 211 is the shape after a piece of a shape (such as a fan shape or an arc shape) is cut off from the edge of the circle.

[0070] It is understandable that the magnetic wheel 210 is a magnet or electromagnet, and the magnetic force on the outer wall of the magnetic wheel 210 is consistent. Although there is a rotating wheel 220 between the product and the magnetic wheel 210, the product can still be attracted to the rotating wheel 220.

[0071] In some embodiments, the feeding mechanism 400 includes a vibratory feeder 410. Products to be coated with silver are placed in the vibratory feeder 410, which arranges the disordered products neatly and transports the neatly arranged products one by one onto the rotating wheel 220. After the products are placed in the vibratory feeder 410, the vibratory feeder 410 can orderly feed the disordered products into the rotating wheel 220.

[0072] Furthermore, the feeding mechanism 400 also includes a steering conveyor belt 420. The vibratory feeder 410 can orderly feed disordered products into the steering conveyor belt 420. The steering conveyor belt 420 adjusts the direction of the orderly products and feeds them into the rotating wheel 220. The steering conveyor belt 420 is spaced between the rotating wheel 220 and the vibratory feeder to prevent the vibration of the vibratory feeder 410 from affecting the transportation of the rotating wheel 220.

[0073] In some embodiments, the feed trough 310 is provided with a feeding port, through which coating liquid is added to the feed trough 310. When the coating material is below a certain level, coating liquid is added through the feeding port so that the coating liquid can continuously adhere to the feeding roller 320.

[0074] Understandably, the material tank 310 is equipped with a position sensor. When the coating level drops below a certain level, the position sensor transmits a signal to add the coating liquid into the material tank 310 from the feeding port.

[0075] In some embodiments, a limiting plate is also included, which is disposed on the bracket 100. A limiting gap is provided between the limiting plate and the rotating wheel 220. After the rotating wheel 220 moves the product to the limiting gap, the limiting plate arranges the product to the same height. The height limiting gap is used to prevent the product from having different heights during transportation due to product stacking, misalignment, or other reasons, resulting in different contact depths with the coating liquid and affecting the coating effect.

[0076] Understandably, the limit plate is detachably mounted on the bracket 100, and by adjusting the position of the limit plate, different widths of height limit gaps can be formed to adapt to different products.

[0077] In some embodiments, a scraper 330 is provided on the feeding roller 320. The scraper 330 scrapes away excess coating liquid on the feeding roller 320, ensuring a consistent coating liquid thickness on the feeding roller 320. A scraping gap is provided between the scraper 330 and the feeding roller 320. When the coating liquid adhering to the feeding roller 320 passes through the limiting hole, excess coating liquid is scraped off by the scraper 330, controlling the coating thickness and improving the coating quality.

[0078] Furthermore, the coating mechanism 300 also includes a coating wheel 340, at least part of which is located within the material trough 310. The coating wheel 340 is connected to the feeding roller 320. The coating wheel 340 extends partially into the coating liquid, allowing the coating liquid to adhere to the coating wheel 340, which then applies the coating liquid to the feeding roller 320.

[0079] Understandably, the feeding roller 320 requires high precision and is not directly immersed in the material tank 310. Instead, the coating liquid is indirectly applied to the feeding roller 320 through the coating wheel 340 to prevent the feeding roller 320 from being immersed in the material tank 310 for a long time, which would cause corrosion.

[0080] In some embodiments, the rotating wheel 220 and the feeding roller 320 rotate at the same linear velocity but in opposite directions. The conveying speed of the rotating wheel 220 is the same as the linear velocity of the feeding roller 320. The product passes through the coating gap between the rotating wheel 220 and the feeding roller 320. After the feeding roller 320 applies the coating to the product, it continues to rotate, continuously replenishing the coating and maintaining a consistent coating thickness on the surface of the feeding roller 320, thus improving the silver coating quality.

[0081] In some embodiments, the feeding mechanism 500 includes a third power member and a first guide pipe, wherein the third power member drives the product on the rotating wheel 220 to be discharged from the rotating wheel 220 along the first guide pipe.

[0082] Understandably, the third power component can be a negative pressure fan or a blower. The magnetic field between the product and the magnetic wheel 210 at the notch 211 of the rotating wheel 220 is low, so the negative pressure fan or blower can easily drive the product, transport the product to the guide pipe, and discharge the product through the guide pipe.

[0083] In the second embodiment based on this example, the feeding mechanism 500 includes a cutting plate and a second guide pipe. The cutting plate is connected to the second guide pipe and is tangent to the rotating wheel 220. After the product reaches the position of the cutting plate, the product will continue to move along the cutting plate. The cutting plate will guide the product to the second guide pipe, thereby causing the product to be discharged from the rotating wheel 220.

[0084] It is understandable that the part of the cutting plate near the steering wheel is tangent to the rotating wheel 220. The cutting plate is fixed and the rotating wheel 220 rotates relative to it. When the product moves to the cutting plate, the product will continue to be transported along the cutting plate and gradually transported to the second guide pipe.

[0085] In some embodiments, a drying step is also included. The silver coating machine also includes a heating mechanism 600. After the rotating wheel 220 transports the product to the drying tank 610, the heating mechanism 600 causes the coating liquid to dry the product.

[0086] Understandably, the feeding mechanism 400 places the product into the rotating wheel 220. The rotating wheel 220 rotates, causing the product to pass sequentially through the silver coating mechanism, the heating mechanism 600, and the unloading mechanism 500. The silver coating mechanism applies the coating liquid to the product, the heating mechanism 600 dries the coating liquid, and the unloading mechanism 500 transports the product out of the rotating wheel 220. The rotating wheel 220 continues to rotate, and the feeding mechanism 400 continues to place the product into the rotating wheel 220, forming a complete closed loop that enables continuous production.

[0087] Based on the extension of the heating mechanism 600, the heating mechanism includes a drying tank 610 and a heating element 620. The heating element 620 is installed on the drying tank 610 and heats the drying tank 610. The product is conveyed along the rotating wheel 220 and transported along the drying tank 610.

[0088] Based on the extension of the heating mechanism 600, the drying tank 610 is a track extending circumferentially along the rotating wheel 220. When the product passes through the drying tank 610, it will be continuously heated, so that the product can be effectively dried.

[0089] Based on the extension of the heating mechanism 600, the heating element 620 can be a heating tube or a hot air blower.

[0090] Based on the extension of the heating mechanism 600, the drying tank 610 can be a hollow structure with ventilation ducts inside. Air is continuously introduced into the ventilation ducts, and the heating element 620 continuously heats the air, keeping the drying tank 610 in a heated state. The air is constantly circulating, making the overall temperature of the drying tank 610 relatively uniform. Alternatively, the drying tank 610 can be a solid structure, heated by heating pipes. Through heat transfer from the solid structure of the drying tank 610, the overall temperature of the drying tank 610 continuously increases.

[0091] In some embodiments, the feed trough 310 is provided with a feeding port, through which coating liquid is added to the feed trough 310. When the coating material is below a certain level, coating liquid is added through the feeding port so that the coating liquid can continuously adhere to the feeding roller 320.

[0092] Understandably, the material tank 310 is equipped with a position sensor. When the coating level drops below a certain level, the position sensor transmits a signal to add the coating liquid into the material tank 310 from the feeding port.

[0093] It should be noted that in this specification, terms such as "one embodiment", "some embodiments", "basic embodiment", and "extended embodiment" may be used to describe several embodiments of the present invention, and the specific features, structures, materials or characteristics in the several embodiments may be combined in accordance with the principles and spirit of the present invention.

[0094] Although some embodiments of the present invention have been shown and described in this specification, the present invention should not be limited to the above embodiments. As long as they achieve the technical effects of the present invention by the same or equivalent means, any changes, modifications, equivalent substitutions and equivalent variations of these embodiments within the spirit and principles of this disclosure, without departing from the principles and purpose of the present invention, should be included within the scope of protection of this disclosure and should be considered to fall within the protection scope of the present invention.

Claims

1. A method for silver plating, characterized in that, Applied to a silver-plating machine, the silver-plating machine comprising: Bracket (100); The conveying mechanism (200) includes a magnetic wheel (210), a rotating wheel (220), and a second power component. The rotating wheel (220) is rotatably mounted on the bracket (100). The rotating wheel (220) has an inner cavity. The magnetic wheel (210) is located in the inner cavity. The outer wall of the magnetic wheel (210) has a notch (211). The second power component is connected to the rotating wheel (220) and drives the rotating wheel (220) to rotate relative to the magnetic wheel (210). The coating mechanism (300) includes a material tank (310), a feeding roller (320), and a first power member. The material tank (310) is used to store coating liquid. The feeding roller (320) is rotatably mounted on the support (100). The first power member is connected to the feeding roller (320) and is used to drive the feeding roller (320) to rotate and coat the product with the coating liquid in the material tank (310). A feeding mechanism (400) is provided on the bracket (100), and the feeding mechanism (400) is used to transport the product to the rotating wheel (220); A feeding mechanism (500) is provided at the notch (211), and the feeding mechanism (500) is used to transport the product out of the rotating wheel (220); The silvering method includes the following steps: Add material, add coating liquid into the material tank (310), and put the product to be coated with silver into the feeding mechanism (400); During transportation, the feeding mechanism (400) delivers the product to the rotating wheel (220), and the magnetic wheel (210) causes the product to be adsorbed onto the rotating wheel (220). The first power component drives the feeding roller (320) to rotate, and the coating liquid in the trough (310) adheres to the surface of the feeding roller (320). Coating: The rotating wheel (220) and the feeding roller (320) rotate synchronously. The product surface on the rotating wheel (220) comes into contact with the coating liquid on the feeding roller (320), and the coating liquid on the feeding roller (320) is coated onto the product surface. The product is discharged by the feeding mechanism (500) which discharges the product from the rotating wheel (220).

2. The silver-plating method according to claim 1, characterized in that, The feeding mechanism (400) includes a vibrating plate (410), which places the product to be coated with silver into the vibrating plate (410). The vibrating plate (410) arranges the messy products neatly and transports the neat products one by one to the rotating wheel (220).

3. The silver-plating method according to claim 1, characterized in that, The material tank (310) is equipped with a feeding port, into which the coating liquid is added.

4. The silver-plating method according to claim 1, characterized in that, It also includes a limiting plate, which is disposed on the bracket (100). A limiting gap is provided between the limiting plate and the rotating wheel (220). After the rotating wheel (220) moves the product to the limiting gap, the limiting plate will arrange the product to the same height.

5. The silver-plating method according to claim 1, characterized in that, A scraper (330) is provided on the feeding roller (320). The scraper (330) scrapes away excess coating liquid on the feeding roller (320) to keep the coating liquid thickness on the feeding roller (320) consistent.

6. The silver-plating method according to claim 1, characterized in that, The rotating wheel (220) and the feeding roller (320) have the same linear velocity but opposite direction.

7. The silver-plating method according to claim 1, characterized in that, The feeding mechanism (500) includes a third power component and a first guide pipe. The third power component drives the product on the rotating wheel (220) to be discharged from the rotating wheel (220) along the first guide pipe.

8. The silver-plating method according to claim 1, characterized in that, It also includes a drying step. The silver coating machine also includes a heating mechanism (600). After the rotating wheel (220) transports the product to the drying tank (610), the heating mechanism (600) dries the product with the coating liquid.

9. The silver-plating method according to claim 8, characterized in that, The heating mechanism includes a drying tank (610) and a heating element (620). The heating element (620) is installed on the drying tank (610) and heats the drying tank (610). The product is conveyed along the rotating wheel (220) and transported along the drying tank (610).

10. The silver plating method according to claim 1, characterized in that, The material tank (310) is provided with a feeding port, and the coating liquid is added into the material tank (310) through the feeding port.

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