Special-shaped ferrule outer diameter copper plating device and copper plating method

Abstract

The invention relates to a special-shaped ferrule outer diameter copper plating device and a copper plating method. The device comprises a fastening bolt piece, a gland and a base, and a gap for placing a special-shaped ferrule is reserved between the gland and the base; the upper end of the base is provided with a circular truncated cone used for containing the special-shaped ferrule, the outer diameter of the circular truncated cone is consistent with that of the special-shaped ferrule, and the center of the circular truncated cone is provided with a center screw hole used for being matched with a fastening bolt piece. A boss protruding outwards is arranged in the center of the lower end of the base, a blind hole communicated with the center screw hole is formed in the boss, and a rod head of a fastening bolt piece is screwed into the blind hole from the center screw hole in the gland and is tightened and fixed in the blind hole, so that the two special-shaped ferrules which are stacked back to back in the middle are firmly fixed. The device is ingenious in structure, simple and practical, the sealing effect is guaranteed, the adjusting frequency is reduced, meanwhile, the labor intensity is reduced, efficient, convenient and low-strength operation of the ferrule copper plating procedure is achieved, the product quality is guaranteed, meanwhile, the production efficiency is improved, and the purpose of meeting the large-batch production requirement is achieved.

Description

Technical Field

[0001] This invention relates to the field of bearing ring surface treatment technology, and in particular to a copper plating device and method for the outer diameter of irregularly shaped bearing rings. Background Technology

[0002] In the field of bearing ring machining, when copper plating the outer diameter of irregularly shaped rings, it is crucial to strictly prevent various plating solutions from contacting the inner diameter (non-copper-plated surface) to avoid chemical corrosion. The upper surface of the ring has two symmetrical bosses, which are higher than the horizontal plane. There are two main existing processing methods for traditional protection.

[0003] One method is the sealing method: This requires custom-made sealing rings and appropriately sized rubber gaskets placed at irregularly shaped areas to protect the inner diameter (excluding the copper-plated surface). However, this method is difficult to implement and cannot achieve 100% sealing. Furthermore, these bearing rings are quite heavy, typically around 10 kg, requiring entirely manual operation on-site and repeated water immersion tests for sealing performance. Different sizes and structures of products require custom-made sealing rings. In actual production, these irregularly shaped products have many models, small batches, and high manufacturing costs.

[0004] The second method is the sealing method: This involves applying adhesive to the entire inner diameter (non-copper plated surface) of the bearing ring that needs protection. However, this method cannot be completed in one step; multiple applications are required to adjust the uniformity of the adhesive and repeated drying to achieve the desired seal. The entire sealing process for a single product takes at least eight man-hours, and the adhesive has a strong odor. Prolonged exposure to this odorous sealing environment seriously harms the health of operators, leading to widespread resistance among them. After copper plating is completed, the adhesive layer on the inner diameter (non-copper plated surface) must be peeled off.

[0005] The sealing methods mentioned above, whether sealing or encapsulation, all suffer from long processing cycles, high difficulty, high production costs, and low efficiency, and cannot meet the needs of mass production.

[0006] Designing a copper plating device and method for irregularly shaped rings that is ingeniously structured, simple and practical, ensures sealing effect, reduces adjustment frequency, and lowers labor intensity, while achieving efficient, convenient, and low-intensity operation of the copper plating process, ensuring product quality and improving production efficiency to meet the requirements of mass production, is a technical problem that urgently needs to be solved. Summary of the Invention

[0007] To address the aforementioned problems, this invention proposes a copper plating device and method for the outer diameter of irregularly shaped rings. This method achieves a clever structure, simplicity, and practicality, ensuring sealing performance, reducing the number of adjustments, and lowering labor intensity. It enables efficient, convenient, and low-intensity operation of the ring copper plating process, ensuring product quality while improving production efficiency to meet the requirements of mass production.

[0008] The present invention adopts the following technical solution: A device for copper plating the outer diameter of irregularly shaped ferrules includes a fastening bolt, a pressure cap, and a base. A gap is left between the pressure cap and the base for placing the irregularly shaped ferrules. The upper end of the base is provided with a frustum for placing the irregularly shaped ferrules. The outer diameter of the frustum is the same as the outer diameter of the irregularly shaped ferrules. A central screw hole for cooperating with the fastening bolt is provided at the center of the lower end of the base. A protruding boss is provided at the center of the boss. A blind hole communicating with the central screw hole is provided in the boss. The head of the fastening bolt is screwed into the central screw hole on the pressure cap and tightened in the blind hole, firmly fixing two irregularly shaped ferrules stacked back to back in the middle.

[0009] As a further optimization of the aforementioned copper plating device for the outer diameter of irregularly shaped rings, the irregularly shaped rings include two irregularly shaped rings of the same shape and size. The irregularly shaped rings are circular ring structures, and the two irregularly shaped rings are stacked back to back to form a hollow inner cavity for water injection. Two symmetrical and outwardly protruding parts are provided on the irregularly shaped rings in the same direction as the center. Two recessed parts that cooperate with the protruding parts are provided on the pressure cap and the base. When the fastening bolts are tightened, the protruding parts on the two irregularly shaped rings are respectively locked into the recessed parts on the pressure cap and the base, thus sealing the two irregularly shaped rings tightly.

[0010] As a further optimization of the aforementioned copper plating device for the outer diameter of irregularly shaped ferrules, hanging holes for suspension are provided on the nut of the fastening bolt and the boss of the base.

[0011] A copper plating method for an irregularly shaped ferrule outer diameter copper plating device includes the following steps: Step S1: Pre-plating treatment of the product. According to the copper plating process requirements, the product to be plated is electrolytically degreased, acid-washed, and cleaned thoroughly. Step S2: Use a bench vise to fix the base, align the protruding side of the lower irregular ferrule with the recessed part on the base and insert it accurately. At this time, the flat side of the lower irregular ferrule is facing up. Then align the flat side of the upper irregular ferrule with the flat side of the lower irregular ferrule and make tight contact. At this time, the irregular side of the upper irregular ferrule is facing up. Step S3: Start filling the cavity formed by the base, the lower irregular ring and the upper irregular ring with hot distilled water. The distilled water will protect the non-copper plated surface of the inner diameter of the irregular ring. Step S4: Align the recessed part of the cap with the protrusion of the irregular surface of the upper irregular ring and insert it accurately. Then, pass the rod head of the fastening bolt through the center screw hole of the cap and the center screw hole of the base in sequence until it is screwed into the blind hole of the base. Continue to tighten the screw to completely seal the entire device. After sealing, put the entire device into the electrolyte for copper electroplating. Step S5: After the copper electroplating is completed, unscrew the screws one by one, remove the pressure cap, pour the distilled water in the inner cavity into the prepared container for use in the next tank, and remove the upper and lower irregular rings one by one to clean them.

[0012] Beneficial effects Compared with the prior art, the present invention has significant advantages and beneficial effects, achieving considerable technological progress and practicality, and possessing broad application value. It has at least the following advantages: 1. This invention proposes a copper plating device and method for the outer diameter of irregularly shaped rings. The innovation of this method lies in injecting hot distilled water into the inner cavity of the ring, using distilled water instead of sealing rings or protective adhesive, which effectively protects the inner diameter of the product (non-copper plated surface), and also avoids the contamination of the plating bath caused by adhesive coating, thus greatly reducing production costs.

[0013] 2. Compared with the sealing ring sealing and sealing glue methods mentioned in the background technology, the present invention adopts the water injection sealing method, which is simple, practical and easy to operate. It is especially suitable for larger products with irregular structures that are difficult to plate with copper by making tooling. It is not limited to the copper plating process, but can also be a surface treatment process such as local nickel plating, and has broad application prospects. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 2 This is the main view of the irregularly shaped ring; Figure 3 This is a cross-sectional view of an irregularly shaped ring; Figure 4 This is a schematic diagram of the fastening bolt component of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the cap of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the base of the present invention; In the diagram: 1. Fastening bolt, 2. Pressure cap, 3. Base, 4. Irregular ferrule, 5. Boss, 6. Blind hole, 7. Protrusion, 8. Recess, 9. Hanging hole. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments and accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of protection. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art, without creative effort, including formal modifications to the technical solutions described in the following embodiments or equivalent substitutions of some technical features, based on the inspiration of the present invention, are within the scope of protection of the present invention.

[0016] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0017] The embodiments of the present invention are as follows: like Figure 1 As shown, a copper plating device for the outer diameter of an irregularly shaped ferrule includes a fastening bolt 1, a pressure cap 2, and a base 3. A gap is left between the pressure cap 2 and the base 3 for placing the irregularly shaped ferrule 4. The upper end of the base 3 is provided with a frustum for placing the irregularly shaped ferrule. The outer diameter of the frustum is the same as the outer diameter of the irregularly shaped ferrule. The center of the frustum is provided with a central screw hole for cooperating with the fastening bolt. The lower end of the base 3 is provided with an outwardly protruding boss 5. The boss 5 is provided with a blind hole 6 communicating with the central screw hole. The rod head of the fastening bolt 1 is screwed into the central screw hole on the pressure cap 2 and tightened and fixed in the blind hole 6, firmly fixing the two irregularly shaped ferrules 4 stacked back to back in the middle.

[0018] like Figure 2 , 3 As shown in Figure 5, the irregularly shaped collar 4 includes two irregularly shaped collars of the same shape and size. The irregularly shaped collar 4 has a circular ring structure. The two irregularly shaped collars are stacked back to back to form a hollow inner cavity for water injection. The irregularly shaped collar 4 has two symmetrical and outwardly protruding protrusions 7 arranged in the coaxial direction with the center. The pressure cap 2 and the base 3 are each provided with two recesses 8 that cooperate with the protrusions 7. When the fastening bolt 1 is tightened, the protrusions 7 on the two irregularly shaped collars 4 are respectively clamped into the recesses 8 on the pressure cap 2 and the base 3, thus sealing the two irregularly shaped collars 4 tightly.

[0019] like Figure 4 , 6 As shown, the nut of the fastening bolt 1 and the boss 5 of the base 3 are both provided with hanging holes 9 for suspension.

[0020] A copper plating method for an irregularly shaped ferrule outer diameter copper plating device includes the following steps: Step S1: Pre-plating treatment of the product. According to the copper plating process requirements, the product to be plated is electrolytically degreased, acid-washed, and cleaned thoroughly. Step S2: Use a bench vise to fix the base 3, align the protruding part 7 of the lower irregular ring with the recessed part 8 on the base 3 and insert it accurately. At this time, the flat surface of the lower irregular ring is facing up. Then align the flat surface of the upper irregular ring with the flat surface of the lower irregular ring and make tight contact. At this time, the irregular surface of the upper irregular ring is facing up. Step S3: Start filling the cavity formed by the base 3, the lower irregular ring and the upper irregular ring with hot distilled water. Use the distilled water to protect the non-copper plated surface of the inner diameter of the irregular ring. Step S4: Align the recessed part 8 of the pressure cap 2 with the protrusion 7 of the irregular surface of the upper irregular ring and insert it accurately. Then, pass the rod head of the fastening bolt 1 through the central screw hole of the pressure cap 2 and the central screw hole of the base 3 in sequence until it is screwed into the blind hole 6 of the base 3. Continue to tighten the screw to completely seal the entire device. After sealing, put the entire device into the electrolyte for copper electroplating. Step S5: After the copper electroplating is completed, unscrew the screws one by one, remove the pressure cap 2, pour the distilled water in the inner cavity into the prepared container for use in the next tank, and remove the upper and lower irregular rings one by one to clean them.

[0021] This invention features a clever and simple structure that ensures a good seal, reduces the number of adjustments required, and lowers labor intensity. It enables efficient, convenient, and low-intensity operation of the copper plating process for the rings, ensuring product quality while improving production efficiency to meet the requirements of mass production.

[0022] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the concept of the present invention.

Claims

1. A device for copper plating the outer diameter of an irregularly shaped ferrule, characterized in that: The device includes a fastening bolt (1), a pressure cap (2), and a base (3). There is a gap between the pressure cap (2) and the base (3) for placing the irregularly shaped rings (4). The upper end of the base (3) is provided with a frustum for placing the irregularly shaped rings. The outer diameter of the frustum is the same as the outer diameter of the irregularly shaped rings. The center of the frustum is provided with a central screw hole for cooperating with the fastening bolt. The lower end of the base (3) is provided with an outwardly protruding boss (5). The boss (5) is provided with a blind hole (6) communicating with the central screw hole. The rod head of the fastening bolt (1) is screwed into the central screw hole on the pressure cap (2) and tightened and fixed in the blind hole (6), firmly fixing the two irregularly shaped rings (4) stacked back to back in the middle.

2. The copper plating device for the outer diameter of irregularly shaped rings as described in claim 1, characterized in that: The irregular ring (4) includes two irregular rings of the same shape and size. The irregular ring (4) is a circular ring structure. The two irregular rings are stacked back to back to form a hollow inner cavity for water injection. The irregular ring (4) has two symmetrical and outwardly protruding protrusions (7) in the coaxial direction with the center. The pressure cap (2) and the base (3) are each provided with two recesses (8) that cooperate with the protrusions (7). When the fastening bolt (1) is tightened, the protrusions (7) on the two irregular rings (4) are respectively clamped in the recesses (8) on the pressure cap (2) and the base (3), and the two irregular rings (4) are tightly sealed.

3. The copper plating device for the outer diameter of irregularly shaped rings as described in claim 1, characterized in that: Hanging holes (9) for suspension are provided on the nut of the fastening bolt (1) and the boss (5) of the base (3).

4. The copper plating method for the copper plating device for the outer diameter of irregularly shaped rings as described in any one of claims 1 to 3, characterized in that: Includes the following steps, Step S1: Pre-plating treatment of the product. According to the copper plating process requirements, the product to be plated is electrolytically degreased, acid-washed, and cleaned thoroughly. Step S2: Use a bench vise to fix the base (3), align the protruding part (7) of the lower irregular ring with the recessed part (8) on the base (3) and insert it accurately. At this time, the flat surface of the lower irregular ring is facing up. Then align the flat surface of the upper irregular ring with the flat surface of the lower irregular ring and make them in close contact. At this time, the irregular surface of the upper irregular ring is facing up. Step S3: Start filling the cavity formed by the base (3), the lower irregular ring and the upper irregular ring with hot distilled water, and use the distilled water to protect the non-copper plated surface of the inner diameter of the irregular ring. Step S4: Align the recessed part (8) of the pressure cap (2) with the protrusion (7) of the irregular surface of the upper irregular ring and insert it accurately. Then, pass the rod head of the fastening bolt (1) through the central screw hole of the pressure cap (2) and the central screw hole of the base (3) in sequence until it is screwed into the blind hole (6) of the base (3). Continue to tighten the screw to completely seal the entire device. After sealing, put the entire device into the electrolyte for copper electroplating. Step S5: After the copper electroplating is completed, unscrew the screws in sequence, remove the pressure cap (2), pour the distilled water in the inner cavity into the prepared container for use in the next tank, and remove the upper and lower irregular rings one by one to clean them.

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