Production process of energy storage integrated copper pipe bending terminal
By adopting the production process of integrated energy storage copper tube bent terminals in the production of terminals, using material pretreatment, stamping and cutting, molding pretreatment, stamping and plating and assembly steps, the problems of low efficiency and large resistance in traditional production methods are solved, efficient and low-cost terminal production is achieved, and the conductivity and corrosion resistance of the terminals are improved.
Patent Information
- Application Number
- CN202411939643.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-04-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The traditional terminal production method is inefficient, the bending angle is too sharp, and the bent components are easily worn, and the terminals formed by welding are too large when the large current passes through.
The production process of energy storage integrated copper tube bend terminals includes material pretreatment, stamping and cutting, molding pretreatment, stamping and plating and assembly steps. Through chemical solvents or ultrasonic cleaning, pickling treatment, preheating treatment, progressive stamping, annealing treatment and electroplating, the cleanliness and ductility of the copper tube surface can be improved, the risk of cracks during the stamping process can be reduced, and the conductivity and corrosion resistance of the terminals can be enhanced.
It improves the production efficiency and finished product quality of the terminals, reduces production processes, avoids waste, extends the service life of the terminals, and enhances its electrical performance and connection stability.
Smart Images
Figure CN119812873A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electrical engineering, and in particular to a production process for an integrated energy storage copper tube bending terminal. Background Art
[0002] Terminal blocks are electrical components used to connect wires or cables. They are widely used in many industries such as industrial automation, power distribution systems, communication equipment, household appliances, automotive electronics, etc. Terminal blocks are usually composed of insulators, contacts, fasteners and markings. Insulators are usually made of non-conductive materials such as plastic, which protect the internal metal parts and prevent short circuits and electric shocks. Contacts are used to contact with wires to ensure good electrical connections. Common types include screw type, spring type, plug-in type, etc. Fasteners are used to fix the wires to the contacts to ensure the stability of the connection. Markings are used to indicate the function, voltage level, current capacity and other information of the terminal for easy installation and maintenance.
[0003] In the production process of terminal blocks, the traditional production method of terminal blocks mainly relies on bending machines for multiple bending to achieve the required terminal shape. Or it is a two-component plate and a copper tube. First, one end of the copper tube is flattened and then the plate is welded to the other end of the flattened copper tube to form the shape of the terminal. The produced terminals are bent by bending equipment, and the production efficiency is not high. The bending angle is too sharp, and the bending components are easy to wear. There will be excess waste inside the bending parts, and the outside may be torn. When a large current passes through the terminal formed by welding the two parts, the contact resistance at the bend will be too large. Summary of the invention
[0004] In order to improve the production efficiency and finished product quality of terminal blocks, the present application provides a production process for energy storage integrated copper tube bent terminals.
[0005] The present application provides a production process for an energy storage integrated copper tube bent terminal, which adopts the following technical solution: A production process of an energy storage integrated copper tube bent terminal comprises the following steps: Material pretreatment steps: After selecting the appropriate copper tube according to the design requirements, use chemical solvents or ultrasonic cleaning equipment to roughly clean the copper tube, and then use acid solution to pickle the copper tube after rough cleaning; Stamping blanking steps: Cut the copper tube into the required size and place it in the punching machine. Use the positioning device to ensure that the material is accurately placed in the correct position of the mold. Use the punching machine to flatten one end of the copper tube, and punch the flattened end of the copper tube to process the hole to obtain the terminal blank; Stamping step: placing the terminal blank in a forming die, using a stamping machine to stamp the terminal blank, stamping the terminal blank into shape, bending the terminal blank, and obtaining a terminal original; Assembly steps: Assemble the original terminal with other components to form a finished terminal.
[0006] By adopting the above technical scheme, the oil, oxide layer and impurities on the surface of the copper tube can be completely removed through chemical solvent or ultrasonic cleaning and pickling treatment, thereby ensuring the cleanliness of the copper tube surface, improving the quality of subsequent stamping and electroplating, and reducing mold wear and maintenance costs; the terminal original is obtained through integrated stamping processing of the copper tube, which reduces the subsequent continuous processing and welding steps, improves the production efficiency of the terminal original and the consistency of the terminal original; the stamped terminal original has a precise shape, avoiding the generation of excess waste.
[0007] Optionally, an electroplating step is provided before the assembling step, and the electroplating step includes: placing the terminal blank in an electroplating tank for electroplating, and during the electroplating process, the current density, the temperature of the plating solution, the pH value, and the stirring speed need to be controlled.
[0008] By adopting the above technical solution, the original terminal is electroplated before assembly, which can significantly improve the conductivity and corrosion resistance of the original terminal, and enhance the electrical performance and service life of the finished terminal. During the electroplating process, the current density, plating solution temperature, pH value and stirring speed are controlled to ensure uniform and dense coating and avoid coating defects such as bubbles, cracks or peeling.
[0009] Optionally, the stamping and blanking step further includes: Before starting the stamping machine, the copper tube is preheated by electric induction heating. During the preheating process, the temperature of the copper tube is monitored using an infrared thermometer.
[0010] By adopting the above technical solutions, preheating can improve the ductility of the copper tube, reduce the risk of cracks during stamping, and reduce the cold work hardening effect, making the copper tube easier to form during stamping. The use of electric induction heating can achieve the purpose of uniform heating of the copper tube, and the use of infrared thermometers to monitor and ensure the accuracy of the preheating temperature.
[0011] Optionally, the stamping and blanking step further includes: When the punching machine is running, a progressive punching method is used to punch, the punching pressure is reduced, and the copper tube is punched multiple times.
[0012] By adopting the above technical solution and using a progressive stamping method, multiple light presses replace one heavy press, which can reduce stress concentration inside the material, reduce the risk of cracks and springback, and at the same time reduce the wear of the stamping die, thereby improving product consistency and production efficiency.
[0013] Optionally, a forming pretreatment step is provided before the stamping forming step, and the forming pretreatment step includes: placing the terminal blank in an annealing furnace for heating, heating the annealing furnace to a predetermined annealing temperature, and keeping the temperature at the predetermined annealing temperature for a period of time; after the insulation is completed, cooling the terminal blank to room temperature.
[0014] By adopting the above technical solution, annealing the terminal blank before stamping can eliminate the internal stress of the terminal blank, improve the plasticity and ductility of the terminal blank, make the terminal blank easier to bend and form in subsequent stamping, reduce cracks and breakages in the stamping process, and improve the yield rate.
[0015] Optionally, the molding pretreatment step further includes: When the annealing furnace is heated to the predetermined annealing temperature, the heating speed of the heating system in the annealing furnace is controlled to achieve uniform heating; When cooling the terminal blank, the heating system of the annealing furnace is turned off and the terminal blank is allowed to cool along with the furnace.
[0016] By adopting the above technical solution, the heating speed in the annealing furnace is controlled to achieve uniform heating, which can avoid the internal stress of the terminal blank caused by sudden temperature change and improve the annealing effect. After the insulation is completed, the terminal blank is cooled with the furnace to further reduce the internal stress, ensure the uniform recovery of the microstructure of the terminal blank, and improve the overall performance of the terminal blank.
[0017] Optionally, in the molding pretreatment step, the annealing temperature ranges from 350 to 450°C.
[0018] By adopting the above technical solution, within the annealing temperature range of 350-450°C, the internal stress of the terminal blank can be effectively eliminated, the ductility and plasticity of the terminal blank can be improved, and at the same time, the performance of the terminal blank will not be deteriorated due to excessively high temperature.
[0019] Optionally, in the stamping and blanking step, when the copper tube is preheated, the preheating temperature range is 100-300°C.
[0020] By adopting the above technical solution, within the preheating temperature range of 100-300°C, the ductility of the copper tube can be improved, the risk of cracks during the stamping process can be reduced, and oxidation and performance degradation of the copper tube due to excessive temperature can be avoided.
[0021] In summary, the present application includes at least one of the following beneficial effects: 1. Compared with the traditional terminal production method, this application reduces the production process and produces one-time products. It is efficient, fast, low-cost and avoids waste. Compared with the traditional bending process, the forming mold used in the stamping process has a long life, which reduces the production cost; 2. In this application, the stamping process is used for processing, which can easily realize the production of products with complex shapes and diverse structures. The stamping process uses molds that are easy to design and manufacture, and can flexibly adapt to different product requirements; 3. In this application, an electroplating step is added before the assembly step. During the electroplating process, the current density, the temperature of the electroplating solution, the pH value and the stirring speed need to be controlled to ensure the quality and uniformity of the electroplating layer. The electroplated terminals have better corrosion resistance and conductivity, which improves the service life of the terminals and the stability of electrical connections; 4. A molding pretreatment step is provided in the present application. Through the annealing treatment in the molding pretreatment step, the internal stress generated in the terminal blank during the processing is eliminated, the toughness and ductility of the terminal blank are improved, and more favorable conditions are created for subsequent stamping and molding. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of the finished terminal of an embodiment of the present application; Figure 2 This is a schematic diagram of the cross-sectional structure of a finished terminal according to an embodiment of the present application; Explanation of the reference numerals: 1. finished terminal; 11. original terminal; 111. round tube portion; 1111. mounting ring groove; 112. flat plate portion; 1121. mounting hole; 12. crown spring. DETAILED DESCRIPTION
[0023] The following is combined with Figure 1-2 This application is described in further detail.
[0024] The embodiment of the present application provides a production process for an energy storage integrated copper tube bent terminal.
[0025] refer to Figure 1 and Figure 2 A terminal product 1 produced by a production process of an energy storage integrated copper tube bending terminal includes a terminal original 11 and a crown spring 12. The terminal original 11 includes an integrally formed round tube portion 111 and a flat plate portion 112. The round tube portion 111 is arranged upwardly inclined relative to the flat plate portion 112, and a mounting hole 1121 is provided on the flat plate portion 112. A mounting ring groove 1111 is provided on the inner side wall of the round tube portion 111 away from one end of the flat plate portion 112, and the crown spring 12 is clamped in the mounting ring groove 1111.
[0026] The production process of the energy storage integrated copper tube bending terminal includes the following steps in sequence: Material pretreatment steps: After selecting the appropriate copper tube according to the design requirements, use chemical solvents or ultrasonic cleaning equipment to roughly clean the copper tube to remove oil and impurities on the surface of the copper tube. Subsequently, use acid solutions such as sulfuric acid or hydrochloric acid to pickle the copper tube after rough cleaning to further remove the oxide layer and microscopic unevenness on the surface of the copper tube, providing a good surface state for subsequent processing.
[0027] Stamping blanking step: preheat the cleaned copper tube by electric induction heating, and use infrared thermometer and other equipment to monitor the temperature, and control the preheating temperature of the copper tube to 100-300°C. This can improve the ductility of the copper tube, reduce the risk of cracks during the stamping process, and avoid oxidation and performance degradation of the copper tube due to excessive temperature.
[0028] After the preheating is completed, the copper tube is cut into the required size and placed in the punching machine. The copper tube is installed on the punching die of the punching machine using a positioning device to ensure that the copper tube is accurately placed in the correct position of the punching die. After that, one end of the copper tube is flattened by the punching machine to form a flat plate portion 112, which is convenient for subsequent punching processing to process holes. In this embodiment, the punching process is specifically to use a punching tool to process a mounting hole 1121 on the flat plate portion 112, thereby obtaining a terminal blank.
[0029] Specifically, during the stamping process, a progressive stamping method is adopted to reduce the pressure of a single stamping through multiple and gradually increasing stamping, thereby reducing stress and deformation and improving the quality of the finished product.
[0030] Forming pretreatment step: heat the terminal blank to a predetermined annealing temperature and keep it at this temperature for a period of time, and then cool it to room temperature with the furnace. Such annealing treatment can effectively eliminate internal stress. Among them, the annealing temperature range needs to be controlled within: 350-450°C.
[0031] In this step, when the annealing furnace is heated to the predetermined annealing temperature, it is necessary to control the heating speed of the heating system in the annealing furnace to achieve uniform heating to avoid internal stress in the material caused by sudden temperature changes. When cooling the terminal blank, turn off the heating system of the annealing furnace and allow the terminal blank to cool with the furnace to ensure that the microstructure of the terminal blank is evenly restored.
[0032] Stamping step: placing the annealed terminal blank in a forming mold, performing a stamping operation through a stamping machine, stamping the terminal blank into shape, and bending it into a desired terminal shape to obtain a terminal component 11.
[0033] The terminal component 11 is further processed by using a milling device to form a mounting ring groove 1111 on the inner side of the circular tube portion 111 of the terminal component 11. A file, sandpaper or polishing device is then used to remove burrs generated during the stamping and milling process to improve the flatness of the surface of the terminal component 11.
[0034] Electroplating step: Subsequently, the terminal component 11 obtained by stamping is electroplated. The electroplating step is carried out in an electroplating tank. During the electroplating process, key parameters such as current density, temperature of the electroplating solution, pH value, and stirring speed of the electroplating solution need to be strictly controlled to ensure the quality and uniformity of the electroplating layer. After the electroplating is completed, the terminal component 11 is cleaned with clean water to remove the electroplating solution and impurities; then, the terminal component 11 is dried in an oven to avoid water stains.
[0035] The electroplated terminals not only look more beautiful, but also have stronger corrosion resistance and better conductivity, which can extend the service life of the terminals and enhance the stability of their electrical connections.
[0036] Assembly steps: The crown spring 12 is placed in the mounting ring groove 1111 of the electroplated terminal original component 11 to obtain a complete terminal product 1.
[0037] The implementation principle of this embodiment is: by comprehensively applying multiple refined steps such as material pretreatment steps, stamping and blanking steps, molding pretreatment steps, stamping and molding steps, electroplating steps and assembly steps, this production process not only significantly improves the production efficiency of the terminal block, but also ensures the high quality standard of the finished product. In particular, by adding key technical links such as preheating treatment, progressive stamping, annealing and electroplating, the structural stability, corrosion resistance and electrical conductivity of the terminal finished product 1 are further enhanced, so that it can better meet the stringent requirements of modern electrical equipment for terminal blocks.
[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A production process for an energy storage integrated copper tube bending terminal, characterized in that: The steps include: Material pretreatment steps: After selecting the appropriate copper tube according to the design requirements, use chemical solvents or ultrasonic cleaning equipment to roughly clean the copper tube, and then use acid solution to pickle the copper tube after rough cleaning; Stamping blanking steps: Cut the copper tube into the required size and place it in the punching machine. Use the positioning device to ensure that the material is accurately placed in the correct position of the mold. Use the punching machine to flatten one end of the copper tube, and punch the flattened end of the copper tube to process the hole to obtain the terminal blank; Stamping step: placing the terminal blank in a forming die, using a stamping machine to stamp the terminal blank, stamping the terminal blank into shape, bending the terminal blank, and obtaining a terminal original (11); Assembling step: Assemble the original terminal component (11) with other components to form a finished terminal product (1).
2. The production process of the energy storage integrated copper tube bending terminal according to claim 1 is characterized in that: Before the assembling step, an electroplating step is also provided, and the electroplating step includes: placing the terminal blank in an electroplating tank for electroplating, and during the electroplating process, the current density, the temperature of the electroplating solution, the pH value, and the stirring speed need to be controlled.
3. The production process of the energy storage integrated copper tube bending terminal according to claim 2 is characterized in that: The stamping and blanking step also includes: Before starting the stamping machine, the copper tube is preheated by electric induction heating. During the preheating process, the temperature of the copper tube is monitored using an infrared thermometer.
4. The production process of the energy storage integrated copper tube bending terminal according to claim 2 is characterized in that: The stamping and blanking step also includes: When the punching machine is running, a progressive punching method is used to punch, the punching pressure is reduced, and the copper tube is punched multiple times.
5. The production process of the energy storage integrated copper tube bending terminal according to claim 4 is characterized in that: A forming pretreatment step is also provided before the stamping forming step, and the forming pretreatment step includes: placing the terminal blank in an annealing furnace for heating, heating the annealing furnace to a predetermined annealing temperature, and keeping the temperature at the predetermined annealing temperature for a period of time; after the insulation is completed, cooling the terminal blank to room temperature.
6. The production process of the energy storage integrated copper tube bent terminal according to claim 5, characterized in that: The molding pretreatment step also includes: When the annealing furnace is heated to the predetermined annealing temperature, the heating speed of the heating system in the annealing furnace is controlled to achieve uniform heating; When cooling the terminal blank, the heating system of the annealing furnace is turned off and the terminal blank is allowed to cool along with the furnace.
7. The production process of the energy storage integrated copper tube bent terminal according to claim 6, characterized in that: In the molding pretreatment step, the annealing temperature ranges from 350 to 450°C.
8. The production process of the energy storage integrated copper tube bent terminal according to claim 7, characterized in that: In the stamping and blanking step, when the copper tube is preheated, the preheating temperature range is 100-300°C.