Full-automatic blanking equipment for capacitors

Abstract

This invention relates to the field of static aging equipment for capacitors, and provides a fully automated capacitor unloading device, including a loading line, a capacitor loading mechanism, an unloading line, a capacitor placement platform, a capacitor testing mechanism, and a capacitor unloading mechanism. The capacitor loading mechanism transports capacitors to the capacitor placement platform; the capacitor testing mechanism tests the performance of the capacitors and determines their quality; the capacitor unloading mechanism sorts and unloads the capacitors. This fully automated unloading device eliminates the need for manual operation throughout the testing and unloading process, saving labor costs and improving production efficiency. Furthermore, during the capacitor unloading process, clamps are used to secure the capacitors, preventing them from easily falling off.

Description

Technical Field

[0001] This invention belongs to the field of static aging equipment for capacitors, and particularly relates to a fully automatic capacitor feeding device. Background Technology

[0002] The production process of solder capacitors involves multiple complex manufacturing steps, which can cause varying degrees of damage to the oxide film on the surface of the internal electrode foil (especially the positive electrode foil). Therefore, the capacitors need to be aged, which involves applying a rated aging voltage and aging in a constant high-temperature environment for a certain period of time in order to repair the damaged electrode foil oxide film.

[0003] Due to their large size and high capacitance, soldered capacitors are currently mostly aged manually. The processes of aging capacitors—including mounting the capacitor strips, placing the strips in the oven, powering them on, setting electrical parameters, and setting the aging time—all require manual intervention. This results in low production efficiency, poor aging effects, and a high number of defective products due to human error, leading to unnecessary losses. Another extreme failure mode is caused by burrs generated during electrode foil trimming. Impurities in the electrolyte or electrolytic paper can cause these burrs to discharge with the electrode foil tips during charging, resulting in an implosion. The consequences of this defect can range from a major explosion causing the casing to crack and ignite, to a minor internal explosion causing bulging of the casing, or even no obvious changes in appearance that are undetectable by conventional testing methods. These defective products may then be mistaken for qualified products and enter the customer's market, causing significant quality problems and substantial losses.

[0004] Current aging equipment includes dynamic aging equipment and static aging equipment. In dynamic aging equipment, a feeding mechanism inserts capacitors into racks equipped with special clamps. The entire rack is then lifted onto the conveyor chain of the tunnel furnace by a robotic arm via a chain conveyor. Conductive devices are installed at both ends of the rack, connecting to each clamp. The rack moves intermittently inside the tunnel furnace and is powered by contact brushes, which cannot achieve continuous power supply. The disadvantages of this are that the brushes make frictional contact during the rack movement, which can easily cause arcing and burn out the conductive modules; due to frictional contact, the contact parts are prone to wear, resulting in poor contact; due to the structural characteristics of the soldered capacitors, the positive and negative leads are short, the clamping area is limited, and the speed during reciprocating motion cannot be too fast, as they are prone to falling off and causing mechanical failure.

[0005] Current static aging equipment involves inserting capacitors into simple clamps. While capacitors can be inserted by directly pressing them in, the clamps are not secure, and the capacitors easily fall off. Multiple clamps share a common electrical connection strip, which frequently results in poor contact. The numerous lead wires from the strip also create a complex and inconvenient circuit. Summary of the Invention

[0006] The purpose of this invention is to provide a fully automatic capacitor feeding device, which can be used in conjunction with the downstream of a capacitor static aging device. It can solve the problems of feeding and testing capacitors on the rack after static aging of capacitors, as well as the screening and classification of aging effects in the prior art.

[0007] The present invention is implemented as follows: a fully automatic capacitor unloading device is used to inspect aged capacitors and remove them from the rack; the fully automatic unloading device includes a loading line, a capacitor loading mechanism, an unloading line, a capacitor placement platform, a capacitor testing mechanism, and a capacitor unloading mechanism.

[0008] The feeding line is used for feeding the strips containing capacitors;

[0009] The capacitor loading mechanism is used to clamp the capacitors on the rack and transport them to the capacitor placement platform. The capacitor loading mechanism has clamps for clamping the capacitors.

[0010] The unloading line is used for unloading empty strip racks;

[0011] The capacitor placement platform is used to fix the capacitor;

[0012] The capacitance testing mechanism is used to test the performance of the capacitors on the capacitor placement platform and to determine the quality of the capacitors.

[0013] The capacitor unloading mechanism is used to clamp the tested capacitors and sort them for unloading. The capacitor unloading mechanism has clamps for clamping the capacitors.

[0014] In one embodiment, both the feeding line and the unloading line are chain conveying mechanisms or belt conveying mechanisms.

[0015] In one embodiment, the unloading equipment further includes a strip frame lifting mechanism, which drives a positioning block mounted on a linear guide rail to move together via a lifting cylinder, thereby raising the strip frame to a certain height.

[0016] In one embodiment, the feeding device further includes a strip frame testing mechanism, which includes a fixing slot for fixing the strip frame and a connector located at the end of the strip frame. The connector is mounted on a linear guide rail and mates with the end of the strip frame. The connector is electrically connected to the strip frame under the drive of a stepper motor and a lead screw transmission module.

[0017] In one embodiment, the unloading equipment further includes a transfer robot for transporting the aged strips to a position close to the capacitor loading mechanism. The transfer robot includes a transverse lead screw module and a longitudinal lead screw module arranged in a cross configuration. The transverse lead screw module is fixed on the frame. A parallel gripper cylinder is installed at the end of the longitudinal lead screw module. Multiple grippers are symmetrically arranged at the piston rod end of the parallel gripper cylinder. The gripping part of the gripper is provided with a slot to facilitate the gripping of the strips.

[0018] In one embodiment, a silicone sleeve is provided at the position where the clamp of the capacitor feeding mechanism contacts the capacitor to increase the clamping force.

[0019] In one embodiment, the capacitor placement platform is an indexing turntable, which is driven by a divider or a servo motor to achieve intermittent motion; multiple clamping devices are evenly arranged on the indexing turntable, and the clamping devices are driven by a linkage mechanism to open two clamps symmetrically mounted on a linear guide rail, and the two clamps automatically close under the action of spring tension.

[0020] In one embodiment, the cylinder-driven linkage mechanism of the capacitance testing mechanism drives the conductive contact mounted on the linear guide rail to move, thereby achieving contact and conduction between the conductive contact and the capacitor pin for performance testing.

[0021] In one embodiment, the capacitor unloading mechanism includes a fixedly mounted cylinder, a vertically mounted vertical lead screw module, and a horizontally mounted horizontal lead screw module. The cylinder drives the vertical lead screw module, mounted on a horizontal linear guide rail, to move horizontally. The vertical lead screw module is equipped with a gripper cylinder and a rotary cylinder. The gripper cylinder is equipped with a chuck for gripping the capacitor. The rotary cylinder is used to rotate the gripped capacitor so that the capacitor leads are positioned upwards. The horizontal lead screw module is equipped with a slide cylinder, which drives the gripper cylinder to move back and forth. After the chuck grips the capacitor, the control system controls the horizontal lead screw module to move to the corresponding position for sorting and processing the tested capacitors.

[0022] In one embodiment, the feeding device further includes a sorting belt for collecting and classifying the tested capacitors, the sorting belt comprising multiple parallel conveyor belts and a single conveyor belt.

[0023] Compared with the prior art, the beneficial effects of this invention are as follows:

[0024] This invention provides a fully automated capacitor unloading device for inspecting aged capacitors, removing them from racks, and classifying them according to their quality grades. The entire process requires no manual operation, saving labor costs and improving production efficiency. Furthermore, it uses professional instruments to inspect the capacitors, ensuring stable operation and highly reliable test results.

[0025] Meanwhile, during the capacitor unloading process, clamps are used to hold the capacitors in place, making them less likely to fall off. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the frame provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of a fully automatic capacitor feeding device provided in an embodiment of the present invention;

[0028] Figure 3 yes Figure 2 A schematic diagram of the feeding line in the feeding equipment shown;

[0029] Figure 4 yes Figure 2 A schematic diagram of the bar lifting mechanism in the feeding equipment shown;

[0030] Figure 5 yes Figure 2 A schematic diagram of the strip frame testing mechanism in the feeding equipment shown;

[0031] Figure 6 yes Figure 2 A schematic diagram of the transfer robot in the unloading equipment shown.

[0032] Figure 7 yes Figure 2 A schematic diagram of the clamping mechanism in the feeding device shown;

[0033] Figure 8 yes Figure 2 A schematic diagram of the capacitor feeding mechanism in the feeding device shown.

[0034] Figure 9 yes Figure 2 A schematic diagram of the clamping device of the indexing turntable in the feeding equipment shown.

[0035] Figure 10 yes Figure 2 A schematic diagram of the capacitance testing mechanism in the feeding device shown.

[0036] Figure 11 yes Figure 2 A schematic diagram of the capacitor feeding mechanism in the feeding device shown.

[0037] Figure 12 yes Figure 2 The diagram shows the structure of the sorting belt in the feeding device. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0039] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] This embodiment provides a fully automatic capacitor unloading device for detecting aged capacitors and unloading them from rack 1 (e.g., Figure 1 Remove from the rack 1 (as shown). Sixteen clamps 11 are evenly arranged on the rack 1. Each clamp 11 has a wire leading out and is independently connected to the end connector 12. The wire harness is neatly arranged in the wire protection cover 13 and the side cover 14. There is a positioning pin 15 at the front and back of the L-shaped base of the rack 1.

[0041] Please refer to Figure 2 The fully automatic unloading equipment includes a feeding line 31, a clamping mechanism 32, a capacitor feeding mechanism 33, an unloading line 34, a capacitor placement platform (i.e., an indexing turntable 35), a capacitor testing mechanism 36, a capacitor unloading mechanism 37, a rack lifting mechanism 38, a rack testing mechanism 39, a transfer robot 3a for moving the tested rack 1 to a position close to the capacitor feeding mechanism 33, and a sorting belt 3b.

[0042] Please refer to Figure 3The feeding line 31 is used to feed the rack 1 containing capacitors. In this embodiment, the feeding line 31 consists of two parallel chains 311 with nylon end caps, driven by a geared motor 312, and equipped with a position detection switch. The feeding and unloading chains 311 run in opposite directions to realize the feeding and unloading processes of the rack 1. Of course, in practical applications, it can also be replaced by a belt conveyor or other mechanism that can realize material conveying.

[0043] Please refer to Figure 4 The bar frame lifting mechanism 38 drives the positioning block 383 mounted on the linear guide rail 382 to move together through the lifting cylinder 381, so that the bar frame 1 is raised to a certain height.

[0044] Please refer to Figure 5 The strip frame testing mechanism 39 includes a fixing slot 391 for fixing the strip frame 1 and a connector 392 located at the end of the strip frame testing mechanism 39. The connector 392 is mounted on a linear guide rail 393 and mates with the end of the strip frame 1. The connector 392 is electrically connected to the strip frame 1 under the drive of a stepper motor 394 and a lead screw transmission module 395.

[0045] Please refer to Figure 6 The transfer robot 3a includes a cross-shaped horizontal lead screw module and a vertical lead screw module. The horizontal lead screw module is fixed on the frame. The vertical lead screw module is equipped with a parallel gripper cylinder 31a at its end. The piston rod of the parallel gripper cylinder 31a is symmetrically provided with four grippers 32a. The gripping part of the gripper 32a has a slot for easy gripping by the rack 1.

[0046] Please refer to Figure 7 The clamping mechanism 32 is used to open the clamp. The clamping mechanism is pushed by the front push cylinder 321 to push the push rod 324 with the front bearing 323 mounted on the linear guide rail 322. The two sides move simultaneously to complete the clamping.

[0047] Please refer to Figure 8 The capacitor loading mechanism 33 is used to clamp the capacitors on the rack 1 and transport them to the indexing turntable 35. The capacitor loading mechanism 33 has a chuck 330 for clamping the capacitors. The capacitor loading mechanism 33 is driven by a fixed cylinder 331 and a cylinder 333 mounted on a linear guide rail 332, which in turn drives a gripper cylinder 335 to move along a specific slide groove via a linkage mechanism 334. Depending on the stroke of the cylinder 333, movement between four different positions can be achieved. The chuck 336 of the capacitor loading mechanism 33 makes four-point line contact with the capacitor, and a silicone sleeve is provided at the contact position of the chuck 336 with the capacitor to increase the clamping force.

[0048] The unloading line 34 is used for unloading empty strip racks 1.

[0049] Indexing turntable 35 is used to fix capacitors; indexing turntable 35 is driven by a divider or servo motor to achieve intermittent movement; eight clamping devices are evenly arranged on indexing turntable 35, please refer to... Figure 9 The clamping device is driven by the linkage mechanism 351 to rotate and open two chucks 353 symmetrically mounted on the linear guide rail 352. The two chucks 353 automatically close under the pull of the spring 354.

[0050] Please refer to Figure 10 The capacitance testing mechanism 36 is used to test the performance of the capacitors on the indexing turntable 35 and determine the quality of the capacitors. The cylinder 361 of the capacitance testing mechanism 36 drives the linkage mechanism 362 to move the conductive contact 364 mounted on the linear guide rail 363, so as to realize the contact between the conductive contact 364 and the capacitor pins for performance testing.

[0051] Please refer to Figure 11 The capacitor feeding mechanism 37 is used to pick up the tested capacitors and remove them from the rack 1, collecting them in sections according to whether they are good or defective products. The capacitor unloading mechanism 37 has a fixed cylinder 371, a vertically arranged vertical lead screw module 372, and a horizontally arranged horizontal lead screw module 373. The cylinder 371 drives the vertical lead screw module 372, which is mounted on a horizontal linear guide rail 374, to move horizontally. The vertical lead screw module 372 is equipped with a gripper cylinder 375 and a rotary cylinder 376. The gripper cylinder 375 is equipped with a C-shaped chuck 377, which grips the capacitor through four-point line contact. The rotary cylinder 376 is used to rotate the gripped capacitor so that the capacitor leads are placed upward. The horizontal lead screw module 373 is equipped with a slide cylinder 378, which drives the gripper cylinder 375 to move back and forth. After the chuck 377 grips the capacitor, the control system controls the horizontal lead screw module 373 to move to the corresponding position according to the test results of the previous process, and classifies the tested capacitors.

[0052] Please refer to Figure 12 The sorting belt 3b is used to collect and classify the tested capacitors. The sorting belt 3b includes seven parallel conveyor belts 31b and a separate conveyor belt 32b.

[0053] In summary, the fully automated feeding equipment provided in this embodiment automates the processes of rack loading, capacitor unloading, capacitor testing, and rack unloading. The entire process requires no manual operation, saving labor costs and improving production efficiency. Furthermore, the use of professional instruments for capacitor testing ensures stable operation and highly reliable test results.

[0054] Meanwhile, during the capacitor unloading process, the capacitor is clamped by chuck 336, and during testing, the capacitor on the indexing turntable 35 is clamped by chuck 353, making it less likely for the capacitor to fall off. Multiple clamps 11 each have independent electrical connecting strips, reducing the occurrence of poor contact.

[0055] 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, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A full-automatic unloading device for capacitor, which is used for detecting the aged capacitor and taking the capacitor off from the rack; characterized in that, The fully automatic unloading equipment includes a feeding line, a capacitor feeding mechanism, an unloading line, a capacitor placement platform, a capacitor testing mechanism, and a capacitor unloading mechanism. The feeding line is used for feeding the strips containing capacitors; The capacitor loading mechanism is used to clamp the capacitors on the rack and transport them to the capacitor placement platform. The capacitor loading mechanism has clamps for clamping the capacitors. The unloading line is used for unloading empty strip racks; The capacitor placement platform is used to fix the capacitor; The capacitance testing mechanism is used to test the performance of the capacitors on the capacitor placement platform and to determine the quality of the capacitors. The capacitor unloading mechanism is used to clamp the tested capacitors and sort and unload them. The capacitor unloading mechanism has a clamp for clamping the capacitors. The fully automated capacitor feeding equipment also includes: A strip rack testing mechanism is located downstream of the feeding line and upstream of the capacitor feeding mechanism. The strip rack testing mechanism includes a fixing slot for fixing the strip rack and a connector located at the end of the strip rack testing mechanism. The connector is mounted on a linear guide rail and cooperates with the end of the strip rack. The connector is electrically connected to the strip rack under the drive of a stepper motor and a lead screw transmission module. An opening mechanism is used to open the clamps on the bar rack before the capacitor feeding mechanism clamps the capacitor. The opening mechanism includes a front-push cylinder, a linear guide rail, and a push rod mounted on the linear guide rail. The front end of the push rod is provided with a bearing. The front-push cylinder pushes the push rod, causing both sides to move simultaneously to open the clamps on the bar rack. The sorting belts are used to collect and classify the tested capacitors. They consist of multiple conveyor belts arranged in parallel and a single conveyor belt.

2. The fully automatic unloading apparatus according to claim 1, wherein Both the feeding line and the unloading line are chain conveyor mechanisms or belt conveyor mechanisms.

3. The fully automatic feeding device as described in claim 1, characterized in that, The unloading equipment also includes a strip frame lifting mechanism, which uses a lifting cylinder to drive a positioning block mounted on a linear guide rail to move together, thereby raising the strip frame to a certain height.

4. The fully automatic feeding device as described in claim 1, characterized in that, The unloading equipment also includes a transfer robot for moving the aged strips to a position close to the capacitor feeding mechanism. The transfer robot includes a horizontal lead screw module and a vertical lead screw module arranged in a cross configuration. The horizontal lead screw module is fixed on the frame. A parallel gripper cylinder is installed at the end of the vertical lead screw module. Multiple grippers are symmetrically arranged at the piston rod end of the parallel gripper cylinder. The gripping part of the gripper is provided with a slot to facilitate the gripping of the strip.

5. The fully automatic feeding device as described in claim 1, characterized in that, The capacitor feeding mechanism has a silicone sleeve at the position where the clamp contacts the capacitor to increase the clamping force.

6. The fully automatic feeding device as described in claim 1, characterized in that, The capacitor placement platform is an indexing turntable, which is driven by a divider or a servo motor to achieve intermittent motion. Multiple clamping devices are evenly arranged on the indexing turntable. The clamping devices are driven by a linkage mechanism to open two chucks symmetrically installed on a linear guide rail. The two chucks automatically close under the action of spring tension.

7. The fully automatic feeding device as described in claim 1, characterized in that, The cylinder-driven linkage mechanism of the capacitance testing mechanism drives the conductive contact mounted on the linear guide rail to move, thereby achieving contact and conduction between the conductive contact and the capacitor pin for performance testing.

8. The fully automatic feeding device as described in claim 1, characterized in that, The capacitor unloading mechanism includes a fixed cylinder, a vertically arranged vertical lead screw module, and a horizontally arranged horizontal lead screw module. The cylinder drives the vertical lead screw module, which is mounted on a horizontal linear guide rail, to move horizontally. The vertical lead screw module is equipped with a gripper cylinder and a rotary cylinder. The gripper cylinder is equipped with a chuck for gripping the capacitor, and the rotary cylinder is used to rotate the gripped capacitor so that the capacitor leads are facing upwards. The horizontal lead screw module is equipped with a slide cylinder, which drives the gripper cylinder to move back and forth. After the chuck grips the capacitor, the control system controls the horizontal lead screw module to move to the corresponding position for sorting and processing the tested capacitors.

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