Aluminum electrolytic capacitor lead welding and riveting process

Abstract

The invention discloses an aluminum electrolytic capacitor lead welding and riveting process which comprises the following steps: step 1, station preparation, step 2, aluminum wire feeding and pretreatment, step 3, synchronous clamping and cutting, step 4, reversing and alignment, step 5, spot welding and fixing, step 6, clamping and steering during first station change, step 7, welding spot detection, step 8, clamping and steering during second station change, and step 9, trimming and correction. Step 10, needle-free detection, step 11, rivet flattening, and step 12, material collection. The device has the beneficial effects that through the precise cutting, synchronous clamping and spot welding processes, it is ensured that the position of the connecting point of the aluminum wire and the CP wire is precise and stable in the welding process. The high-precision control is helpful for avoiding the performance reduction or fault of the capacitor caused by poor welding or poor contact, the introduction of a welding spot detection and needleless detection system further ensures that each joint part meets the standards of electrical performance and structural integrity, and the quality and reliability of the product are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electrolytic capacitors, and in particular relates to a welding and riveting process for leads of aluminum electrolytic capacitors. Background Art

[0002] Aluminum electrolytic capacitors are an important component widely used in electronic circuits. They form capacitance through the conductivity of electrolytes and have large capacitance and relatively high operating voltage. The main components of aluminum electrolytic capacitors include aluminum foil electrodes, electrolytes, paper isolation materials, etc. Among them, the lead connection part of aluminum electrolytic capacitors is very important, which directly affects the performance and reliability of capacitors. Lead welding and riveting processes are a key link in the assembly process of aluminum electrolytic capacitors, which ensure the mechanical strength, conductivity and durability of capacitors. The leads of aluminum electrolytic capacitors are usually made of aluminum wire or aluminum alloy wire, which are connected to the electrodes of the capacitor by welding or riveting. The function of the lead is to connect the electrodes of the capacitor to the external circuit, so that the capacitor can play a role in electronic equipment. Therefore, the quality of the lead connection directly affects the performance of the capacitor, such as resistance, durability, reliability, etc. Summary of the invention

[0003] The purpose of the present invention is to solve the problem of accurate position of the welding joint of aluminum wire and CP wire and consistent quality of welding spot through precise synchronous clamping and cutting, spot welding fixation and reversing alignment steps. Through precise control of welding time, current and temperature during spot welding, the strength and stability of each welding spot can be ensured, thereby avoiding the problem of poor connection or unstable contact caused by welding defects.

[0004] The present invention achieves the above-mentioned purpose through the following technical scheme: The present invention provides a welding and riveting process for aluminum electrolytic capacitor leads, which process includes the following steps: Step 1: CP line feeding At the first station, a CP lead wire for an aluminum electrolytic capacitor is provided, and the CP wire enters the station through a conveying device for the next operation; Step 2: Aluminum wire feeding and pretreatment At the second station, a piece of aluminum wire of suitable length is input and fed out as the connection end of the capacitor lead. The aluminum wire is synchronously clamped by a clamping device to ensure that the aluminum wire is stably positioned before cutting. Step 3: Synchronous clamping and cutting The aluminum wire and the CP wire are cut by a synchronous clamping device, and both ends are ensured to be neat and smooth after cutting to prevent affecting the welding process. The cutting operation is completed by a precision cutting tool, and the cutting length matches the aluminum wire specification; Step 4: Reverse alignment After cutting, use the reversing device to align the joint parts of the aluminum wire and the CP wire so that the connection meets the predetermined welding angle and contact surface requirements to ensure the consistency and reliability of the welding point; Step 5: Spot welding At the lead joint after alignment, the aluminum wire and the CP wire are welded by spot welding. The spot welding device should control the welding time, current and temperature to ensure the strength and quality of the weld; Step 6: First station change and clamping and turning After welding is completed, the welded part is transferred to the new station and accurately positioned by the clamping device. During the turning and clamping process, the fixture must ensure that the welding part is stable to avoid errors; Step 7: Solder joint inspection Use high-precision detection equipment to detect welding points and check whether they meet the standards, such as welding point strength, appearance, size, etc. Any unqualified welding points will be removed and re-welded; Step 8: Secondary station change, clamping and steering After the weld spot is qualified, the welded assembly is transferred to the second clamping station, where it is clamped and positioned again, and the angle and direction are adjusted to ensure the accuracy of the next operation; Step 9: Trimming Use trimming tools to finely trim the connection between the aluminum wire and the CP wire after welding. The trimming tools should ensure that the edges of the connection parts are smooth and flat, and remove any burrs, welding residues or irregular parts that may affect subsequent operations. The trimmed parts ensure good contact surfaces and flatness to facilitate subsequent riveting and flattening operations; Step 10: Calibration Correct the angles of the trimmed welding parts and connecting wires, and use a precision positioning device to ensure that the connection angles of the lead wires and the aluminum electrolytic capacitor body are correct. This step adjusts the angles of the connecting parts to meet the predetermined standards, ensures the accuracy of welding and riveting operations, and avoids insufficient mechanical strength or poor contact due to angle deviation; Step 11: Needle-free Detection Use a pin-free inspection system to detect potential structural problems at each joint of the aluminum electrolytic capacitor lead, such as lead breakage, welding defects or poor contact, to ensure the electrical performance and structural integrity of the product; Step 12: Pre-punch holes in the foil Before riveting, use punching equipment to pre-punch the connection parts of the aluminum electrolytic capacitor leads. This step provides accurate positioning and better mechanical fixation for subsequent riveting operations by making small holes or preparatory holes at the connection ends. The depth, position and size of the punching holes must be precisely controlled to ensure the connection strength and stability during the riveting process. Pre-punching helps avoid lead deformation or position shift during the riveting process and ensures perfect fit of the contact surface. Step 13: Rivets Use a riveting device to rivet the aluminum electrolytic capacitor lead wire and the aluminum wire connection part. During the riveting process, the riveting device needs to ensure that the parameters such as rivet selection, pressure, temperature and time are accurately controlled to ensure the strength and stability of the riveted connection. The pressing of the rivets should be flat and uniform to prevent poor contact or insufficient mechanical strength due to uneven pressure; Step 14: Flatten After riveting is completed, a special flattening device is used to flatten the riveted parts. This process is designed to ensure that the lead connection parts are flat after riveting and remove any protrusions that may be caused by the riveting operation to avoid affecting the appearance of the product or subsequent installation Step 15: Material Collection After all treatments are completed, the process ends and the lead components of the aluminum electrolytic capacitors are collected by the pick-up device and sent to the packaging line, ready for delivery to the next production link or quality control.

[0005] Furthermore, the clamping device of each workstation adopts a precision control system to ensure that the alignment accuracy of the aluminum wire and the CP wire is not less than ±0.1mm, and all operations are completed by intelligent robots or automated equipment.

[0006] Furthermore, the spot welding current, welding time and welding temperature during the welding process are all adjusted in real time through a closed-loop control system to ensure the uniformity of the welding points and the firmness of the connection.

[0007] Furthermore, the trimming tool adopts an automatic trimming function to automatically adjust the trimming depth according to the actual situation of the workpiece, so as to reduce errors in manual operation and improve production efficiency.

[0008] Furthermore, the needle-free detection system is a high-frequency signal detection device that can perform comprehensive detection of the electrical performance and mechanical strength of the lead connection parts after welding to ensure that there are no broken wires, poor contacts or welding defects.

[0009] Furthermore, the rivet flattening step uses a precision rivet flattening device to ensure that the pressure during the rivet pressing process is evenly distributed, and that the riveted points are free of defects and the connection parts are tight and reliable.

[0010] Furthermore, the material taking device adopts an automated material receiving system to take out the aluminum electrolytic capacitor lead assembly that has completed all processing steps and send it to the packaging line for final quality control or packaging.

[0011] Beneficial effects: 1. Through precise cutting, synchronous clamping and spot welding processes, the connection point position of the aluminum wire and the CP wire during welding is ensured to be accurate and stable. This high-precision control helps to avoid capacitor performance degradation or failure caused by poor welding or poor contact. The introduction of solder joint detection and pin-free detection systems further ensures that each joint part meets the standards of electrical performance and structural integrity, greatly improving the quality and reliability of the product.

[0012] 2. The use of automated equipment such as conveying devices, clamping devices and high-precision detection systems effectively reduces the errors and inconsistencies of manual operations. Each step of the process, such as aluminum wire feeding, welding, trimming, riveting, etc., is carried out through precise mechanized control to ensure the improvement of production efficiency. Especially in the clamping and positioning process, the automated system can complete the task quickly and accurately, reducing operation time and repetitive errors, thereby improving overall production efficiency. 3. This process ensures that the mechanical strength and electrical performance of each aluminum electrolytic capacitor lead meet the standards through multiple precise links, such as spot welding fixation, solder joint detection, trimming correction, and pin-free detection. Especially in the rivet flattening and pin-free detection links, high-precision equipment and strict quality control are used to ensure the firmness of the connection parts and the stability of the electrical performance. This can effectively reduce the risk of product failure caused by welding defects or poor contact, and ensure that the final product has higher durability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a process flow chart of the present invention. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Figure 1 The aluminum electrolytic capacitor lead welding and riveting process shown includes the following steps: Step 1: CP wire feeding At the first station, a CP lead wire for an aluminum electrolytic capacitor is provided, and the CP wire enters the station through a conveying device for the next operation; Step 2: Aluminum wire feeding and pretreatment At the second station, a piece of aluminum wire of suitable length is input and fed out as the connection end of the capacitor lead. The aluminum wire is synchronously clamped by a clamping device to ensure that the aluminum wire is stably positioned before cutting. Step 3: Synchronous clamping and cutting The aluminum wire and the CP wire are cut by a synchronous clamping device, and both ends are ensured to be neat and smooth after cutting to prevent affecting the welding process. The cutting operation is completed by a precision cutting tool, and the cutting length matches the aluminum wire specification; Step 4: Reverse alignment After cutting, use the reversing device to align the joint parts of the aluminum wire and the CP wire so that the connection meets the predetermined welding angle and contact surface requirements to ensure the consistency and reliability of the welding point; Step 5: Spot welding At the lead joint after alignment, the aluminum wire and the CP wire are welded by spot welding. The spot welding device should control the welding time, current and temperature to ensure the strength and quality of the weld; Step 6: First station change and clamping and turning After welding is completed, the welded part is transferred to the new station and accurately positioned by the clamping device. During the turning and clamping process, the fixture must ensure that the welding part is stable to avoid errors; Step 7: Solder joint inspection Use high-precision detection equipment to detect welding points and check whether they meet the standards, such as welding point strength, appearance, size, etc. Any unqualified welding points will be removed and re-welded; Step 8: Secondary station change, clamping and steering After the weld spot is qualified, the welded assembly is transferred to the second clamping station, where it is clamped and positioned again, and the angle and direction are adjusted to ensure the accuracy of the next operation; Step 9: Trimming Use trimming tools to finely trim the connection between the aluminum wire and the CP wire after welding. The trimming tools should ensure that the edges of the connection parts are smooth and flat, and remove any burrs, welding residues or irregular parts that may affect subsequent operations. The trimmed parts ensure good contact surfaces and flatness to facilitate subsequent riveting and flattening operations; Step 10: Calibration Correct the angles of the trimmed welding parts and connecting wires, and use a precision positioning device to ensure that the connection angles of the lead wires and the aluminum electrolytic capacitor body are correct. This step adjusts the angles of the connecting parts to meet the predetermined standards, ensures the accuracy of welding and riveting operations, and avoids insufficient mechanical strength or poor contact due to angle deviation; Step 11: Needle-free Detection Use a pin-free inspection system to detect potential structural problems at each joint of the aluminum electrolytic capacitor lead, such as lead breakage, welding defects or poor contact, to ensure the electrical performance and structural integrity of the product; Step 12: Pre-punch holes in the foil Before riveting, use punching equipment to pre-punch the connection parts of the aluminum electrolytic capacitor leads. This step provides accurate positioning and better mechanical fixation for subsequent riveting operations by making small holes or preparatory holes at the connection ends. The depth, position and size of the punching holes must be precisely controlled to ensure the connection strength and stability during the riveting process. Pre-punching helps avoid lead deformation or position shift during the riveting process and ensures perfect fit of the contact surface. Step 13: Rivets Use a riveting device to rivet the aluminum electrolytic capacitor lead wire and the aluminum wire connection part. During the riveting process, the riveting device needs to ensure that the parameters such as rivet selection, pressure, temperature and time are accurately controlled to ensure the strength and stability of the riveted connection. The pressing of the rivets should be flat and uniform to prevent poor contact or insufficient mechanical strength due to uneven pressure; Step 14: Flatten After riveting is completed, a special flattening device is used to flatten the riveted parts. This process is to ensure that the lead connection parts are flat after riveting and remove any protrusions that may be caused by the riveting operation to avoid affecting the appearance of the product or subsequent installation; Step 15: Material Collection After all treatments are completed, the process ends and the lead components of the aluminum electrolytic capacitors are collected by the pick-up device and sent to the packaging line, ready for delivery to the next production link or quality control.

[0015] Example 1: Standard aluminum electrolytic capacitor lead welding and riveting process Step 1: CP wire feeding: The CP lead wire is provided through the conveying device and enters the first station for subsequent operation. Step 2: Aluminum wire feeding and pretreatment: Input the aluminum wire of appropriate length in the second station, and use the clamping device to stabilize the positioning of the aluminum wire. Step 3: Synchronous clamping and cutting: The synchronous cutting of the aluminum wire and the CP wire is completed by the precision cutting tool to ensure that both ends are neat and smooth. Step 4: Reversing alignment: Use the reversing device to align the aluminum wire and the CP wire connection end to ensure the accuracy of the welding angle and contact surface. Step 5: Spot welding fixation: Use the spot welding process for welding, control the time, current and temperature, and ensure the strength and quality of the weld. Step 6: First station conversion: Transfer the welding part to the new station and use the clamping device for precise positioning. Step 7: Solder point detection: Check the quality of the solder joint through the high-precision detection device, remove the unqualified solder joints and re-weld. Step 8: Secondary station conversion: Transfer the welded assembly to the second clamping station, adjust the angle and direction to ensure accurate operation. Step 9: Trimming: Trim at the second station to remove the irregular edges at the connection between the aluminum wire and the CP wire. Step 10: Correction: Correct the angles of the trimmed welding parts and connecting wires, and use a precision positioning device to ensure that the connection angle between the lead and the aluminum electrolytic capacitor body is correct. Step 11: Pinless detection: Use a pinless detection system to ensure the structural integrity of the lead joint and detect whether there are potential problems. Step 12: Pre-punching of aluminum foil: Before riveting, use a punching device to pre-punch the connection parts of the aluminum electrolytic capacitor lead. This step provides accurate positioning and better mechanical fixation for subsequent riveting operations by making small holes or preparatory holes at the connection ends; Step 13: Riveting: Use a riveting device to rivet the aluminum electrolytic capacitor lead and the aluminum wire connection part. During the riveting process, the rivet device needs to ensure that the parameters such as rivet selection, pressure, temperature and time are accurately controlled to ensure the strength and stability of the riveted connection. Step 14: Flattening: After riveting is completed, a special flattening device is used to flatten the riveted parts. This process is designed to ensure that the lead connection parts after riveting are flat and remove any protrusions that may be caused by the riveting operation. Step 15: Material collection: After completing all process steps, the aluminum electrolytic capacitor lead assembly is sent to the packaging line through the material collection device. Example 2: High-precision aluminum electrolytic capacitor lead welding riveting process Step 1: CP wire feeding: Use precision conveying device to provide high-precision CP lead wire, and precisely calibrate the conveying path to ensure accurate position when entering the workstation. Step 2: Aluminum wire feeding and pretreatment: Use high-precision aluminum wire positioning device to ensure that the aluminum wire is accurately aligned and stable before cutting. Step 3: Synchronous clamping cutting: During the cutting process, laser cutting technology is used to ensure that the cut end face is smooth and burr-free, thereby improving the reliability of the welding point. Step 4: Reversing alignment: Use high-precision robotic arm to automatically reverse to ensure that the aluminum wire and the CP wire connection end are accurately docked to minimize alignment errors. Step 5: Spot welding fixation: Use a precise spot welding control system to dynamically adjust welding parameters (time, current, pressure) to ensure the quality of the weld. Step 6: First station conversion: Through the control of the robot arm, accurate station conversion is performed to avoid errors caused by manual operation. Step 7: Solder point detection: Use a three-dimensional visual inspection system to perform quality inspection of the weld point, automatically identify weld point defects, and provide real-time feedback on the inspection results. Step 8: Secondary station conversion: Use a mechanical automation system to re-clamp and position the welding assembly to ensure that there is no error during the transfer process. Step 9: Trimming: Use a high-precision trimming machine to finely trim the aluminum wire connection parts to ensure that each connection is smooth and flat. Step 10: Correction: Perform angle correction on the trimmed welding parts and connecting wires, and use a precision positioning device to ensure that the connection angle between the lead and the aluminum electrolytic capacitor body is correct. Step 11: Pinless detection: Combine infrared sensors and X-ray inspection systems to monitor the electrical performance of the joints in real time and detect potential quality problems in a timely manner. Step 12: Pre-punching of aluminum foil: Before riveting, use a punching device to pre-punch the connection parts of the aluminum electrolytic capacitor leads. This step provides accurate positioning and better mechanical fixation for subsequent riveting operations by making small holes or preparatory holes at the connection ends; Step 13: Riveting: Use a riveting device to rivet the aluminum electrolytic capacitor leads to the aluminum wire connection part. During the riveting process, the riveting device needs to ensure that the parameters such as rivet selection, pressure, temperature and time are precisely controlled to ensure the strength and stability of the riveted connection. Step 14: Flattening: After riveting is completed, use a special flattening device to flatten the riveted parts. This process is designed to ensure that the lead connection parts are flat after riveting and remove any protrusions that may be caused by the riveting operation. Step 15: Material collection: After completing all process steps, the aluminum electrolytic capacitor lead assembly is fed into the packaging line through the material collection device. Example 3: High-efficiency aluminum electrolytic capacitor lead welding riveting process Step 1: CP wire feeding: The automated conveying system provides multiple CP leads at the same time, ensuring that each station can operate at the same time and reducing waiting time. Step 2: Aluminum wire feeding and pretreatment: Use multiple aluminum wire synchronous conveying systems at the second station to cut the length of each aluminum wire as needed and ensure that the quality of the aluminum wire meets the standards. Step 3: Synchronous clamping and cutting: Multiple precision cutting equipment works in parallel to ensure that multiple aluminum wires are cut synchronously with the CP wire, and the cutting operation is completed quickly and accurately. Step 4: Reversing alignment: The reversing mechanical device is applied in multiple stations, and all aluminum wires and CP wire connection parts are automatically aligned to ensure alignment accuracy. Step 5: Spot welding fixation: The parallel spot welding equipment is used to ensure that multiple welding points can be welded at the same time to improve production efficiency. Step 6: First station conversion: The welding part is quickly transferred to the next station through the automated transmission system, and clamping and positioning are performed at the same time to avoid manual operation errors. Step 7: Solder point detection: Multiple solder point detection instruments are integrated to monitor multiple solder points at the same time to avoid bottlenecks. Step 8: Secondary station conversion: Through the intelligent station switching system, the station direction and angle are automatically adjusted to reduce manual intervention and improve accuracy. Step 9: Trimming: Use an automated trimming device to quickly remove irregular edges at the joints of aluminum wire and CP wire to ensure that the connection parts are neat and smooth. Step 10: Correction: Correct the angles of the trimmed welding parts and connecting wires, and use a precision positioning device to ensure that the connection angles between the leads and the aluminum electrolytic capacitor body are correct. Step 11: Pinless detection: Real-time monitoring is carried out through an intelligent diagnostic system to automatically identify whether there are problems at the joints, reducing the burden of manual inspection. Step 12: Pre-punching of aluminum foil: Before riveting, use a punching device to pre-punch the connection parts of the aluminum electrolytic capacitor leads. This step provides accurate positioning and better mechanical fixation for subsequent riveting operations by making small holes or preparatory holes at the connection ends. Step 13: Rivet: Use a riveting device to rivet the aluminum electrolytic capacitor lead and the aluminum wire connection part. During the riveting process, the riveting device needs to ensure that the parameters such as rivet selection, pressure, temperature and time are accurately controlled to ensure the strength and stability of the riveted connection. Step 14: Flattening: After the riveting is completed, a special flattening device is used to flatten the riveted part. This process is intended to ensure that the lead connection part after riveting is flat and remove any protrusions that may be generated by the riveting operation. Step 15: Material collection: The finished lead assembly is sent to the packaging line through an automatic material collection system to achieve efficient production. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims.Any reference sign in a claim should not be construed as limiting the claim concerned.

[0016] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A welding and riveting process for aluminum electrolytic capacitor leads, characterized in that: The following steps are involved: Step 1: CP line feeding At the first station, a CP lead wire for an aluminum electrolytic capacitor is provided, and the CP wire enters the station through a conveying device for the next operation; Step 2: Aluminum wire feeding and pretreatment At the second station, a piece of aluminum wire of suitable length is input and fed out as the connection end of the capacitor lead. The aluminum wire is synchronously clamped by a clamping device to ensure that the aluminum wire is stably positioned before cutting. Step 3: Synchronous clamping and cutting The aluminum wire and the CP wire are cut by a synchronous clamping device, and both ends are ensured to be neat and smooth after cutting to prevent affecting the welding process. The cutting operation is completed by a precision cutting tool, and the cutting length matches the aluminum wire specification; Step 4: Reverse alignment After cutting, use the reversing device to align the joint parts of the aluminum wire and the CP wire so that the connection meets the predetermined welding angle and contact surface requirements to ensure the consistency and reliability of the welding point; Step 5: Spot welding At the lead joint after alignment, the aluminum wire and the CP wire are welded by spot welding. The spot welding device should control the welding time, current and temperature to ensure the strength and quality of the weld; Step 6: First station change and clamping and turning After welding is completed, the welded part is transferred to the new station and accurately positioned by the clamping device. During the turning and clamping process, the fixture must ensure that the welding part is stable to avoid errors; Step 7: Solder joint inspection Use high-precision detection equipment to detect welding points and check whether they meet the standards, such as welding point strength, appearance, size, etc. Any unqualified welding points will be removed and re-welded; Step 8: Secondary station change, clamping and steering After the weld spot is qualified, the welded assembly is transferred to the second clamping station, where it is clamped and positioned again, and the angle and direction are adjusted to ensure the accuracy of the next operation; Step 9: Trimming Use trimming tools to finely trim the connection between the aluminum wire and the CP wire after welding. The trimming tools should ensure that the edges of the connection parts are smooth and flat, and remove any burrs, welding residues or irregular parts that may affect subsequent operations. The trimmed parts ensure good contact surfaces and flatness to facilitate subsequent riveting and flattening operations; Step 10: Calibration Correct the angles of the trimmed welding parts and connecting wires, and use a precision positioning device to ensure that the connection angles of the lead wires and the aluminum electrolytic capacitor body are correct. This step adjusts the angles of the connecting parts to meet the predetermined standards, ensures the accuracy of welding and riveting operations, and avoids insufficient mechanical strength or poor contact due to angle deviation; Step 11: Needle-free Detection Use a pin-free inspection system to detect potential structural problems at each joint of the aluminum electrolytic capacitor lead, such as lead breakage, welding defects or poor contact, to ensure the electrical performance and structural integrity of the product; Step 12: Pre-punch holes in the foil Before riveting, use punching equipment to pre-punch the connection parts of the aluminum electrolytic capacitor leads. This step provides accurate positioning and better mechanical fixation for subsequent riveting operations by making small holes or preparatory holes at the connection ends. The depth, position and size of the punching holes must be precisely controlled to ensure the connection strength and stability during the riveting process. Pre-punching helps avoid lead deformation or position shift during the riveting process and ensures perfect fit of the contact surface. Step 13: Rivets Use a riveting device to rivet the aluminum electrolytic capacitor lead wire and the aluminum wire connection part. During the riveting process, the riveting device needs to ensure that the parameters such as rivet selection, pressure, temperature and time are accurately controlled to ensure the strength and stability of the riveted connection. The pressing of the rivets should be flat and uniform to prevent poor contact or insufficient mechanical strength due to uneven pressure; Step 14: Flatten After riveting is completed, a special flattening device is used to flatten the riveted parts. This process is to ensure that the lead connection parts are flat after riveting and remove any protrusions that may be caused by the riveting operation to avoid affecting the appearance of the product or subsequent installation; Step 15: Material Collection After all treatments are completed, the process ends and the lead components of the aluminum electrolytic capacitors are collected by the pick-up device and sent to the packaging line, ready for delivery to the next production link or quality control.

2. The aluminum electrolytic capacitor lead welding and riveting process according to claim 1, characterized in that: The clamping device of each workstation adopts a precision control system to ensure that the alignment accuracy of the aluminum wire and the CP wire is not less than ±0.1mm, and all operations are completed by intelligent robots or automated equipment.

3. The aluminum electrolytic capacitor lead welding and riveting process according to claim 2, characterized in that: The spot welding current, welding time and welding temperature in the welding process are all adjusted in real time through a closed-loop control system to ensure the uniformity of the welding points and the firmness of the connection.

4. The aluminum electrolytic capacitor lead welding and riveting process according to claim 3, characterized in that: The trimming tool adopts an automatic trimming function and automatically adjusts the trimming depth according to the actual situation of the workpiece, so as to reduce the error of manual operation and improve production efficiency.

5. The aluminum electrolytic capacitor lead welding and riveting process according to claim 4, characterized in that: The pinless detection system is a high-frequency signal detection device that can perform comprehensive detection of the electrical performance and mechanical strength of the lead connection parts after welding to ensure that there are no broken wires, poor contacts or welding defects.

6. The aluminum electrolytic capacitor lead welding and riveting process according to claim 5, characterized in that: The rivet flattening step adopts a precision rivet flattening device to ensure that the pressure during the rivet pressing process is evenly distributed, and that the riveted points are free of defects and the connected parts are tight and reliable.

7. The aluminum electrolytic capacitor lead welding and riveting process according to claim 6, characterized in that: The material taking device adopts an automated material receiving system to take out the aluminum electrolytic capacitor lead assembly that has completed all processing steps and send it to the packaging line for final quality control or packaging.

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