Plasma beam injection system in chromium plating machine
By using a workpiece clamping mechanism with dual-axis coordinated motion and a modular lifting frame, combined with bidirectional plasma beam spraying, the problems of uneven coating and poor lifting adaptability in chrome plating machines are solved, achieving a highly efficient and uniform chrome plating effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHANGJIAGANG MEIAN METAL PROD TECH CO LTD
- Filing Date
- 2026-01-06
- Publication Date
- 2026-04-17
AI Technical Summary
The plasma beam spraying system in existing chrome plating machines is difficult to fully cover complex curved surfaces or irregularly shaped workpieces, resulting in uneven coating thickness and localized missed spraying. In addition, traditional workpiece lifting frames have poor adaptability, increasing production costs and reducing production efficiency.
Employing a dual-axis coordinated motion workpiece clamping mechanism and a modular adjustable workpiece lifting frame, combined with bidirectional plasma beam spraying, it enables workpiece revolution and rotation as well as multi-angle spraying, adapting to workpieces of different sizes and shapes.
It achieves seamless coverage of the plasma beam, improves coating uniformity and bonding strength, reduces production costs, and increases production efficiency.
Smart Images
Figure CN121874705A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of plasma jetting technology, and more specifically, to a plasma beam jetting system in a chromium plating machine. Background Technology
[0002] Plasma beam chromium plating, as a highly efficient surface strengthening and modification process, is widely used in machinery manufacturing, aerospace, and automotive industries. It involves spraying materials such as chromium alloys onto the workpiece surface at high speed in a plasma state, forming a high-performance coating that is wear-resistant, corrosion-resistant, and heat-resistant, significantly extending the workpiece's service life. However, with the increasing demands for workpiece coating quality, processing efficiency, and equipment adaptability in industrial production, the plasma beam spraying systems in existing chromium plating machines are gradually revealing several technical shortcomings: 1) Most existing workpiece clamping mechanisms can only achieve single rotation or revolution, making it difficult for the plasma beam to fully cover the workpiece surface. This is especially true for complex curved or irregularly shaped workpieces, which can easily lead to uneven coating thickness and localized missed spraying. Some equipment requires frequent manual adjustment of the workpiece position, which is not only cumbersome and time-consuming, but also prone to creating overlap marks at the junctions of multiple spraying operations, resulting in an increased workpiece defect rate. 2) Traditional workpiece lifting racks are mostly fixed structures with limited clamping range and load-bearing capacity, making them difficult to adapt to workpieces of different sizes and shapes. When facing multi-specification batch production, frequent fixture changes are required, increasing production costs and reducing production efficiency. At the same time, some lifting racks lack effective positioning and stabilization structures, making workpieces prone to displacement and shaking during high-speed movement, affecting the coating adhesion strength. No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention
[0003] In view of the problems in the related technologies, the present invention proposes a plasma beam spraying system for a chromium plating machine to overcome the above-mentioned technical problems existing in the existing related technologies. Therefore, the specific technical solution adopted by the present invention is as follows: The plasma beam jetting system in the chrome plating machine includes an electroplating chamber. A chamber door is provided on one side of the surface of the electroplating chamber. A workpiece clamping mechanism is provided inside the electroplating chamber to clamp and fix the workpiece and drive the workpiece to rotate on its own axis while revolving around the sun. Plasma beam emitting mechanisms are provided on both sides of the inner wall of the electroplating chamber to emit plasma beams. Furthermore, to facilitate the movement of the electroplating tank door, the inner wall of the electroplating tank has a placement cavity that mates with the tank door, and the outer circumference of the electroplating tank has a moving groove that mates with the tank door. A pushing block is provided on one side of the tank door surface to push the tank door. Furthermore, to effectively avoid issues like missed spraying and overlapping spraying caused by single-motion operation and better meet coating requirements, the workpiece clamping mechanism includes a rotating shaft installed in the middle of the electroplating chamber. The top of the rotating shaft extends to the top of the electroplating chamber and is connected to the first motor. A drive gear is sleeved on the outer side of the bottom end of the rotating shaft. A driven gear meshes with the drive gear on its outer circumference. A driven shaft is inserted through the middle of each driven gear. A gear ring meshes with the driven gear on its outer side. A drive rotating seat is located at the top of the gear ring. Several self-rotating seats are evenly arranged on the outer side of the top of the drive rotating seat, and the bottom end of each self-rotating seat is connected to the top of the driven shaft. A workpiece lifting frame is located at the top of each self-rotating seat. Several through holes that mate with the rotating shaft and driven shaft are opened in the middle of the drive rotating seat. The workpiece lifting frame includes a lifting rod mounted on the top of the self-rotating seat. Several lifting blocks are arranged from top to bottom on the outer side of the lifting rod, and several lifting holes are formed on the outer side of each lifting block. Several sliding grooves are evenly distributed from top to bottom on the outer circumference of the lifting rod, and several sliding blocks that mate with the sliding grooves are evenly distributed on the inner side of each lifting block. Several positioning grooves are formed on one side of each sliding groove to fix the lifting blocks. The bottom end of the lifting rod is threadedly connected to the self-rotating seat to allow for connection and separation between the lifting rod and the self-rotating seat. Several fixing rods are arranged on the top of the self-rotating seat, between which a positioning ring is fitted. The positioning ring is threadedly connected to the fixing rod. Several positioning holes that mate with the lifting rod are formed on the top of the positioning ring, and the inner diameter of the positioning hole is larger than the diameter of the lifting rod. Furthermore, in order to effectively improve the coating bonding strength, the plasma beam emitting mechanism includes plasma beam emitting components installed on both sides of the inner wall of the electroplating chamber. An electric door is provided on the inner side of the plasma beam emitting component to cooperate with it, and the top of the electric door penetrates through the electroplating chamber and is connected to a second motor located at the top of the electroplating chamber. The beneficial effects of this invention are as follows: 1) By setting up a workpiece clamping mechanism, the active rotating seat can be driven to revolve through the transmission cooperation of the rotating shaft, the driving gear, the driven gear and the gear ring. At the same time, the driven shaft drives the rotating seat to rotate, so that the workpiece can achieve dual-axis coordinated movement during the spraying process. The plasma beam can cover the workpiece surface without dead angles, effectively avoiding the problems of missed spraying and overlapping spraying caused by single movement, and thus better meeting the spraying requirements. 2) The workpiece hoisting frame in this invention adopts a modular and adjustable design. The hoisting block cooperates with the sliding groove of the hoisting rod through the sliding block, so that the spacing can be adjusted up and down along the hoisting rod, and it can be fixed with the positioning groove to adapt to shaft and block workpieces of different sizes. At the same time, the multiple hoisting holes on the hoisting block can realize the synchronous hoisting of multiple workpieces, which significantly improves production efficiency. 3) The lifting rod and the self-rotating seat in this invention are connected by threads, which can be quickly disassembled and replaced to adapt to the lifting requirements of different types of workpieces without replacing the entire set of fixtures, thus reducing production changeover costs; the positioning ring is fixed by the fixing rod, and its positioning hole forms an auxiliary limit for the lifting rod, effectively suppressing the shaking of the workpiece during movement and effectively improving the lifting stability. 4) By symmetrically setting plasma beam emission mechanisms on both sides of the inner wall of the electroplating tank, a bidirectional spraying pattern can be formed, which further improves the coating uniformity. Combined with the dual-axis motion design, the coating bonding strength can be effectively improved. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the plasma beam jetting system in a chromium plating machine according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the installation of the drive gear in the plasma beam jetting system of a chrome plating machine according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the installation of the workpiece clamping mechanism in the plasma beam jetting system of a chromium plating machine according to an embodiment of the present invention; Figure 4 yes Figure 3 Enlarged view of the local structure at point A in the middle. In the picture: 1. Electroplating tank; 2. Tank door; 3. Placement cavity; 4. Moving groove; 5. Push block; 6. Rotating shaft; 7. First motor; 8. Driving gear; 9. Driven gear; 10. Driven shaft; 11. Gear ring; 12. Driving rotating seat; 13. Rotating seat; 14. Workpiece hoisting frame; 15. Hoisting rod; 16. Hoisting block; 17. Hoisting hole; 18. Sliding groove; 19. Sliding block; 20. Positioning groove; 21. Fixing rod; 22. Positioning ring; 23. Positioning hole; 24. Plasma beam emission assembly; 25. Electric door; 26. Second motor. Detailed Implementation To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components. According to an embodiment of the present invention, a plasma beam jetting system for a chromium plating machine is provided. The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-4 As shown, the plasma beam jetting system in the chromium plating machine according to an embodiment of the present invention includes an electroplating chamber 1, a chamber door 2 that cooperates with the surface of the electroplating chamber 1, a placement cavity 3 that cooperates with the chamber door 2 on the inner wall of the electroplating chamber 1, and a moving groove 4 that cooperates with the chamber door 2 on the outer circumference of the electroplating chamber 1. A pushing block 5 is provided on one side of the surface of the chamber door 2 to realize the pushing of the chamber door 2. A workpiece clamping mechanism is provided inside the electroplating chamber 1 to realize the clamping and fixing of the workpiece and to drive the workpiece to rotate on its own axis while revolving around the revolution. Plasma beam emitting mechanisms are provided on both sides of the inner wall of the electroplating chamber 1 to realize the emission of plasma beams. In one embodiment, the workpiece clamping mechanism includes a rotating shaft 6 installed in the middle of the electroplating chamber 1, with the top end of the rotating shaft 6 extending to the top of the electroplating chamber 1 and connected to a first motor 7. A drive gear 8 is sleeved on the outer side of the bottom end of the rotating shaft 6, and a driven gear 9 meshing with it is provided on the outer circumference of the drive gear 8. A driven shaft 10 is inserted through the middle of each driven gear 9. A gear ring 11 meshing with the driven gear 9 is provided on the outer side of the driven gear 9, and a drive rotating seat 12 is provided at the top end of the gear ring 11. A plurality of self-rotating seats 13 are evenly arranged on the outer side of the top of the drive rotating seat 12, and the bottom end of the self-rotating seat 13 is connected to the top end of the driven shaft 10. A workpiece lifting frame 14 is provided at the top end of the self-rotating seat 13. A plurality of through holes that cooperate with the rotating shaft 6 and the driven shaft 10 are opened in the middle of the drive rotating seat 12. The workpiece lifting frame 14 includes a lifting rod 15 mounted on the top of the self-rotating seat 13. Several lifting blocks 16 are arranged from top to bottom on the outer side of the lifting rod 15, and several lifting holes 17 are formed on the outer side of each lifting block 16. Several sliding grooves 18 are evenly formed from top to bottom on the outer circumference of the lifting rod 15, and several sliding blocks 19 that mate with the sliding grooves 18 are evenly formed on the inner side of each lifting block 16. Several positioning grooves 20 are formed on one side of each sliding groove 18 to fix the lifting blocks 16. The bottom end of the lifting rod 15 is threadedly connected to the self-rotating seat 13 to achieve connection and separation between the lifting rod 15 and the self-rotating seat 13. A number of fixing rods 21 are provided on the top of the active rotating seat 12 and between the self-rotating seats 13. A positioning ring 22 is sleeved between the top ends of the fixing rods 21, and the positioning ring 22 is connected to the fixing rods 21 by threads. The top of the positioning ring 22 is provided with a number of positioning holes 23 that cooperate with the lifting rod 15, and the inner diameter of the positioning hole 23 is larger than the diameter of the lifting rod 15. By incorporating a workpiece clamping mechanism, the drive rotating seat 12 is driven to revolve around the self-rotating seat 13 through the transmission and cooperation of the rotating shaft 6, the driving gear 8, the driven gear 9, and the gear ring 11. Simultaneously, the driven shaft 10 drives the self-rotating seat 13 to rotate on its own axis, enabling the workpiece to achieve dual-axis coordinated movement during the spraying process. The plasma beam can cover the workpiece surface without dead angles, effectively avoiding the problems of missed spraying and overlapping spraying caused by single movement, thus better meeting the spraying requirements. Furthermore, the workpiece hoisting frame 14 in this invention adopts a modular and adjustable design. The hoisting block 16 cooperates with the sliding groove 18 of the hoisting rod 15 through the sliding block 19, so that the distance can be adjusted up and down along the hoisting rod 15, and it can be fixed with the positioning groove 20 to adapt to shaft-like and block-shaped workpieces of different sizes. At the same time, the multiple hoisting holes 17 on the hoisting block 16 can realize the synchronous hoisting of multiple workpieces, which significantly improves production efficiency. In addition, the lifting rod 15 and the self-rotating seat 13 are connected by threads, which can be quickly disassembled and replaced to adapt to the lifting requirements of different types of workpieces without replacing the entire set of fixtures, thus reducing production changeover costs. The positioning ring 22 is fixed by the fixing rod 21, and its positioning hole 23 forms an auxiliary limit on the lifting rod 15, effectively suppressing the shaking of the workpiece during movement and effectively improving the lifting stability. In practical applications, after the single chrome plating is completed, there may be chrome plating residue in the sliding groove 18 and other grooves, which may easily affect the up and down movement of the lifting block 16. At this time, it is necessary to disassemble the lifting rod 15 and clean it (i.e., clean the residue in the sliding groove 18 and other grooves). In addition, the sliding groove 18, sliding block 19 and positioning groove 20 in this embodiment can also be replaced by pins and pin holes (i.e., several pin holes are opened on the lifting rod, and the lifting block 16 and the lifting rod 15 are positioned and fixed by pins). The working principle of the workpiece clamping mechanism is as follows: First, the first motor 7 drives the rotating shaft 6 to rotate. The driving gear 8 at the bottom of the rotating shaft 6 rotates and meshes with the driven gear 9. The driven gear 9 also meshes with the gear ring 11. This causes the driving rotating seat 12 to revolve around the rotating shaft 6. On the other hand, the driven shaft 10 drives the top rotating seat 13 to rotate. Finally, the workpiece hoisting frame 14 at the top of the rotating seat 13 carries the workpiece to achieve a dual-axis coordinated motion of revolution and rotation, ensuring that the plasma beam is uniformly sprayed onto the workpiece surface without dead angles. In one embodiment, the plasma beam emitting mechanism includes plasma beam emitting assemblies 24 installed on both sides of the inner wall of the electroplating chamber 1. An electric door 25 is provided on the inner side of the plasma beam emitting assembly 24 to cooperate with it, and the top end of the electric door 25 penetrates through the electroplating chamber 1 and is connected to a second motor 26 located at the top of the electroplating chamber 1. By symmetrically arranging the plasma beam emitting mechanisms on both sides of the inner wall of the electroplating chamber 1, a bidirectional spraying pattern can be formed, further improving the coating uniformity. Combined with the dual-axis motion design, the coating adhesion strength can be effectively improved. In summary, by means of the above-mentioned technical solution of the present invention, and by setting up a workpiece clamping mechanism, the active rotating seat 12 can be driven to rotate the self-rotating seat 13 through the transmission cooperation of the rotating shaft 6, the driving gear 8, the driven gear 9 and the gear ring 11, while the driven shaft 10 drives the self-rotating seat 13 to rotate. This enables the workpiece to achieve dual-axis coordinated movement during the spraying process, and the plasma beam can cover the workpiece surface without dead angles. This effectively avoids the problems of missed spraying and overlapping spraying caused by single movement, and thus better meets the spraying requirements. Furthermore, the workpiece hoisting frame 14 in this invention adopts a modular and adjustable design. The hoisting block 16 cooperates with the sliding groove 18 of the hoisting rod 15 through the sliding block 19, so that the distance can be adjusted up and down along the hoisting rod 15, and it can be fixed with the positioning groove 20 to adapt to shaft-like and block-shaped workpieces of different sizes. At the same time, the multiple hoisting holes 17 on the hoisting block 16 can realize the synchronous hoisting of multiple workpieces, which significantly improves production efficiency. In addition, the lifting rod 15 and the self-rotating seat 13 are connected by threads, which can be quickly disassembled and replaced to adapt to the lifting requirements of different types of workpieces without replacing the entire set of fixtures, thus reducing production changeover costs. The positioning ring 22 is fixed by the fixing rod 21, and its positioning hole 23 forms an auxiliary limit on the lifting rod 15, effectively suppressing the shaking of the workpiece during movement and effectively improving the lifting stability. In addition, by symmetrically setting plasma beam emission mechanisms on both sides of the inner wall of electroplating tank 1, a bidirectional spraying pattern can be formed, which further improves the coating uniformity. Combined with the dual-axis motion design, the coating bonding strength can be effectively improved. In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A plasma beam spraying system in a chromium plating machine, comprising an electroplating chamber, wherein a chamber door is provided on one side of the surface of the electroplating chamber to cooperate with it, characterized in that, The electroplating chamber is equipped with a workpiece clamping mechanism to clamp and fix the workpiece, and to drive the workpiece to rotate on its own axis while revolving around the sun. Both sides of the inner wall of the electroplating chamber are equipped with plasma beam emitting mechanisms to emit plasma beams.
2. The plasma beam spraying system in the chromium plating machine according to claim 1, characterized in that, The inner wall of the electroplating chamber is provided with a placement cavity that matches the chamber door, and the outer circumference of the electroplating chamber is provided with a moving groove that matches the chamber door.
3. The plasma beam spraying system in the chromium plating machine according to claim 1, characterized in that, A push block is provided on one side of the surface of the compartment door to enable the door to be pushed.
4. The plasma beam spraying system in the chromium plating machine according to claim 1, characterized in that, The workpiece clamping mechanism includes a rotating shaft installed in the middle of the electroplating chamber, and the top end of the rotating shaft extends to the top of the electroplating chamber and is connected to the first motor. A drive gear is sleeved on the outer side of the bottom end of the rotating shaft, and a driven gear meshing with the drive gear is provided on the outer side of the circumference of the drive gear. A driven shaft is inserted through the middle of each driven gear. The driven gear has a gear ring meshing with it on its outer side. The top of the gear ring has a driving rotating seat. Several self-rotating seats are evenly arranged on the top outer side of the driving rotating seat. The bottom of the self-rotating seat is connected to the top of the driven shaft. The top of the self-rotating seat has a workpiece lifting frame.
5. The plasma beam spraying system in the chromium plating machine according to claim 4, characterized in that, The active rotating seat has several through holes in its middle that cooperate with the rotating shaft and the driven shaft.
6. The plasma beam spraying system in the chromium plating machine according to claim 4, characterized in that, The workpiece hoisting frame includes a hoisting rod installed on the top of the self-rotating seat. Several hoisting blocks are arranged from top to bottom on the outer side of the hoisting rod, and several hoisting holes are opened on the outer side of the hoisting blocks. The outer circumference of the lifting rod is evenly provided with several sliding grooves from top to bottom, and the inner side of the lifting block is evenly provided with several sliding blocks that cooperate with the sliding grooves. Several positioning grooves are provided on one side of the sliding grooves to fix the lifting block.
7. The plasma beam spraying system in the chromium plating machine according to claim 4, characterized in that, The workpiece hoisting frame includes a hoisting rod installed on the top of the self-rotating seat. Several hoisting blocks are arranged from top to bottom on the outer side of the hoisting rod, and several hoisting holes are opened on the outer side of the hoisting blocks. The outer circumference of the lifting rod is evenly provided with several sliding grooves from top to bottom, and the inner side of the lifting block is evenly provided with several sliding blocks that cooperate with the sliding grooves. Several positioning grooves are provided on one side of the sliding grooves to fix the lifting block.
8. The plasma beam spraying system in the chromium plating machine according to claim 6, characterized in that, A number of fixing rods are provided on the top of the automatic rotating seat and between the rotating seats. A positioning ring is sleeved between the top ends of the fixing rods, and the positioning ring is connected to the fixing rod by a thread. The top of the positioning ring has several positioning holes that mate with the lifting rod, and the inner diameter of the positioning hole is larger than the diameter of the lifting rod.
9. The plasma beam spraying system in the chromium plating machine according to claim 1, characterized in that, The plasma beam emitting mechanism includes plasma beam emitting components installed on both sides of the inner wall of the electroplating chamber. An electric door is provided on the inner side of the plasma beam emitting component to cooperate with it, and the top of the electric door penetrates through the electroplating chamber and is connected to a second motor located at the top of the electroplating chamber.