Linear silver spot welding machine with compact structure
By combining a linear structure with a CCD detection device, the problems of non-compact structure and insufficient detection in existing silver spot welding equipment are solved, achieving equipment compactness and improved welding yield, while saving space and labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SHENKE WELDING EQUIP CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-08
AI Technical Summary
Existing silver spot welding equipment has a non-compact structure, occupies a large space, and lacks a detection mechanism, which leads to frequent occurrences of welding with the back of the silver spot facing upwards, affecting the quality of finished circuit breakers.
It adopts a linear structure design, combined with a CCD detection device and a flexible clamping device, to realize the lateral conveying and longitudinal movement of the contact and the silver point. The detection step is added to ensure that the silver point faces upward, and the idle part of the equipment is reduced by automatically separating good products and defective products.
This achieves a compact equipment structure, reduces space occupation, improves welding yield, avoids welding with the back of the silver spot facing upwards, and saves labor costs.
Smart Images
Figure CN224209252U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of circuit breaker silver spot welding machine technology, and in particular to a compact linear silver spot welding machine. Background Technology
[0002] A circuit breaker is a combination switch that protects a circuit by cutting it off when a fault occurs. The electromagnetic system of a circuit breaker has moving and stationary contacts for connecting or disconnecting the circuit. During processing, these contacts require the welding of conductive silver dots. Existing automatic contact and silver dot welding equipment mainly consists of a machine body, a turntable mounted on the machine body, several clamping devices evenly distributed along the edge of the turntable, contact vibrating trays for placing contacts, silver dot vibrating trays for placing silver dots arranged sequentially along the turntable, a contact and silver dot welding device, and a product output device. The contact and silver dot vibrating trays are connected to the clamping devices on the turntable via conveyor channels. Conveyor devices are provided between the contact and silver dot vibrating trays and the welding device to transfer workpieces from the conveyor channels to the clamping devices on the turntable. However, existing silver spot welding equipment has a structure where the welding device is arranged around a turntable, the clamping device is located at the edge of the turntable, and there is a large amount of empty space in the center of the turntable, resulting in a large space occupation. Furthermore, there is a lack of inspection during the silver spot feeding and welding process, often resulting in silver spots with the back facing up being welded to the contacts. This causes defective contacts to be sent to the next processing stage, affecting the finished circuit breaker. Therefore, designing a compact linear silver spot welding machine that can reduce equipment space occupation and avoid welding silver spots with the back facing up has become an urgent technical problem to be solved. Summary of the Invention
[0003] To solve the above problems, the present invention provides a compact linear silver spot welding machine.
[0004] The present invention provides a compact linear silver spot welding machine, comprising a processing table, and a feeding device, a contact gripping device, a silver spot feeding device, a welding device, a discharging device, and a controller mounted on the processing table. The feeding device includes a first vibrating plate and a second vibrating plate for transversely conveying the contact and the silver spot, respectively. The discharging device includes a transversely arranged discharging guide rail, a discharging box located at the end of the discharging guide rail, and a first slider slidably connected to the discharging guide rail, mounted at one end of the discharging guide rail and connected to the first slider for cooperative driving. The device includes a first cylinder, a pneumatic gripper connected to the first slider, a welding device located at the beginning of the discharge guide rail, a welding head corresponding to the position of the pneumatic gripper and capable of opening and closing, a contact gripping device with a gripping claw that picks up contacts from the first vibrating plate and longitudinally transports them to the pneumatic gripper, and a silver point feeding device with a silver point suction nozzle that picks up silver points from the material channel of the second vibrating plate and transports them to the gripping claw. The controller is electrically connected to the first vibrating plate, the second vibrating plate, the first cylinder, the pneumatic gripper, the contact gripping device, the silver point feeding device, and the welding device.
[0005] With the above structure, the controller starts the first and second vibratory feeders. The first vibratory feeder laterally conveys the contact to the end of its feed channel, aligning the contact with the gripping claw of the contact gripping device. The controller starts the gripping claw, which opens and closes to grip the contact. The contact gripping device then drives the gripping claw longitudinally to the pneumatic gripper. When the gripping claw passes the silver dot feeding device, it pauses its movement. The second vibratory feeder laterally conveys the silver dots to the end of its feed channel, aligning the silver dots with the silver dot suction nozzle of the silver dot feeding device. The silver dot suction nozzle is started to pick up the silver dots. The silver dot feeding device drives the suction nozzle to the gripping claw. The suction nozzle stops picking up the silver dots and places them on the contact. The silver dot feeding device then drives the suction nozzle to reset. Afterward, the gripping claw resumes its movement to the pneumatic gripper, which opens and closes to grip the contact. The gripping claw releases the contact, and the contact gripping device then drives the contact to return to its original position. The clamping jaws return to their original position. The first cylinder is activated, driving the first slider to move laterally on the discharge guide rail. The first slider drives the pneumatic clamping jaws and the clamped contact to move laterally, positioning the welding device at the beginning of the discharge guide rail. When the pneumatic clamping jaws stop at the beginning of the discharge guide rail, the welding head opens and closes to clamp the contact and silver point on the pneumatic clamping jaws for welding. After welding, the welding head opens and separates from the contact. The first cylinder drives the first slider to move to the end of the discharge guide rail, and the pneumatic clamping jaws open, allowing the welded contact to fall into the discharge box. This achieves the lateral transport of the contact and silver point by the first and second vibrating discs, and the lateral transport of the welded contact to the discharge box by the pneumatic clamping jaws. The longitudinal transport of the contact and silver point to the pneumatic clamping jaws is completed by the clamping jaws, reducing the empty space in the middle of the equipment, making the equipment structure more compact, and reducing the space occupied in the processing workshop.
[0006] As a further improvement of this utility model, the contact clamping device includes a second guide rail arranged longitudinally, a second slider slidably connected to the second guide rail, and a second cylinder fixed to the second guide rail. The second cylinder is connected to the second slider for cooperative driving. The clamping claw is connected to the second slider. The clamping claw includes a mounting frame, a contact clamping claw disposed on the mounting frame that can open and close to clamp the contact, a silver point adjusting clamping claw, and a linkage component that causes the contact clamping claw and the silver point adjusting clamping claw to open and close. It also includes a mounting base for mounting the mounting frame. The mounting base and the mounting frame are provided with a sliding component that allows the mounting frame to slide back and forth longitudinally along the mounting base when driven by an external force. A return spring is provided between the mounting frame and the mounting base.
[0007] With the above structure, the controller starts the second cylinder, which drives the second slider to move longitudinally along the second guide rail, sequentially picking up contacts from the material channel of the first vibratory plate. The silver dot feeding device places silver dots on the contacts, and the contacts are then handed over to the pneumatic grippers for clamping. During contact picking, a mounting bracket for installing the contact gripping claw and the silver dot adjusting gripping claw is installed on the mounting base, and the mounting base and mounting bracket are connected by a sliding assembly. When the mounting bracket is subjected to external force, it will slide along the sliding assembly... The mounting base slides, and the mounting frame is equipped with a cylinder or motor as a power source to make the mounting frame rise and fall on the mounting base until the contact clamping claw aligns with the material channel of the first vibratory plate. The contact clamping claw opens and closes to clamp the contact. When placing the silver point on the contact, the silver point adjusting clamping claw opens and closes to clamp the silver point, preventing the position of the silver point from shifting during the movement of the clamping claw. After being handed over to the pneumatic clamping claw, the welding head opens and closes to weld the contact and the silver point, making the position setting of the material channel of the first vibratory plate, the silver point feeding device, and the pneumatic clamping claw more flexible.
[0008] As a further improvement of this utility model, a first CCD detection device is provided on one side of the second vibratory plate. The first CCD detection device includes a first optical axis connected to the processing table, and a first light source and a first camera connected to the first optical axis. The first light source and the first camera are located above the second vibratory plate. A nozzle connected to an air pump is provided on the top of the first vibratory plate. The air outlet of the nozzle is aligned with the interior of the second vibratory plate. The controller is electrically connected to the first CCD detection device.
[0009] With the above structure, by activating the first light source and the first camera, when the silver dots are conveyed to the top of the material channel by the second vibrating plate, the first camera captures an image of the silver dots for detection. The first light source illuminates the silver dots to ensure the clarity of the silver dots in the image and determines whether the silver dots are facing upwards. The electrical signal of the detection result is sent to the controller. When the back of the silver dots is detected to be facing upwards, the controller controls the air pump to start. The nozzle sprays airflow at the top position of the first vibrating plate to blow the detected back-facing silver dots down. The silver dots fall back to the bottom of the second vibrating plate and the conveying starts again. When the back of the silver dots is not detected to be facing upwards, the air pump does not start, and the silver dots are normally conveyed to the end of the material channel of the second vibrating plate, avoiding the back-facing silver dots being sucked up by the silver dot suction nozzle and placed on the contact.
[0010] As a further improvement of this utility model, the feeding device also includes a first flat vibratory feeder connected to the end of the material channel of the second vibratory plate, a first misaligned block connected to the tail end of the first flat vibratory feeder, a second flat vibratory feeder whose head end is connected to the first misaligned block and is arranged horizontally, and a second misaligned block connected to the tail end of the flat vibratory feeder. A second CCD detection device is provided on one side of the first misaligned block. The second CCD detection device includes a second optical axis connected to the processing table, and a second light source and a second camera connected to the second optical axis. The second light source and the second camera are arranged above the first misaligned block. The silver dot feeding device includes a third guide rail arranged horizontally, a third slider slidably connected to the third guide rail, and a third cylinder fixed to the third guide rail. The third cylinder is connected to the third slider for cooperative driving. The third slider is connected to a lifting cylinder. The lifting cylinder is connected to a vertically downward first pull rod for cooperative linkage. A suction plate is provided at the bottom of the first pull rod. The suction plate is provided with a suction sleeve for connecting the silver dot suction nozzle. The two ends of the third guide rail correspond to the second misaligned block and the clamping claw, respectively. The controller is electrically connected to the second CCD detection device.
[0011] With the above structure, the silver dots are conveyed to the end of their own feed channel by the second vibratory feeder. The silver dots then enter the first vibratory feeder and are conveyed to the first misalignment block. From there, the silver dots are pushed from the first misalignment block into the second vibratory feeder for further conveying. By activating the second light source and the second camera, the second camera captures images of the silver dots for detection, determining whether the silver dots on the first misalignment block are facing upwards. The electrical signal of the detection result is sent to the controller, which can be connected to an alarm or warning light. When a silver dot is detected facing backwards, an alarm is triggered to alert the worker, who then manually removes the backward-facing silver dot, further eliminating backward-facing silver dots. To improve the yield rate after welding, after the silver dots are conveyed to the second misaligned block by the second vibratory feeder, the third cylinder is activated to drive the third slider to move laterally along the third guide rail. The third slider drives the silver dot suction nozzle, which is connected by the lifting cylinder, the first pull rod, the suction plate, and the suction nozzle sleeve, to move laterally above the second misaligned block. The lifting cylinder is activated to drive the first pull rod to lower the silver dot suction nozzle. The silver dot suction nozzle starts to pick up the silver dots, and then moves laterally to the top of the clamping claw. It then lowers to place the silver dots on the contact head held by the clamping claw. Finally, the silver dot suction nozzle returns to its original position, making the movement trajectory setting of the silver dot suction nozzle more flexible when picking up and placing silver dots.
[0012] As a further improvement of this utility model, a detection seat and a third CCD detection device are provided on one side of the discharge device and connected to the processing table. The third CCD detection device includes a third optical axis, and a third light source and a third camera connected to the third optical axis. The third light source and the third camera are set above the detection seat. The position and shape of the detection seat match the contacts of the pneumatic gripper. The gripper, the detection seat and the discharge box are arranged at equal intervals in the horizontal direction. The pneumatic gripper includes a first gripper and a second gripper arranged at intervals in the horizontal direction. When the first slider is located at the beginning of the discharge guide rail, the positions of the first gripper and the second gripper correspond to the gripper and the detection seat, respectively. The controller is electrically connected to the third CCD detection device.
[0013] With the above structure, the contact is conveyed to the pneumatic gripper via the clamping claw. First, the first gripper opens and closes to clamp the contact, while the second gripper is positioned corresponding to the detection seat. After the welding device welds the contact to the silver spot, the first cylinder drives the first slider to move towards the end of the discharge guide rail, aligning the first gripper with the detection seat. The clamping claw, detection seat, and discharge box are arranged at equal intervals laterally. The second gripper then moves to the location of the discharge box, and the first gripper opens to place the contact on the detection seat. The first slider then moves back to the beginning of the discharge guide rail, aligning the second gripper with the detection seat. The second gripper opens and closes to clamp the contact on the detection seat. When the first slider moves again towards the end of the discharge guide rail, and the first gripper aligns with the detection seat, the second gripper moves above the discharge box and opens to allow the contact to fall into the discharge box. The contacts are collected inside the box. When the contacts are sent to the detection seat, the third light source and the third camera are activated. The third camera captures images of the silver spots for detection, determining whether the silver spots welded on the contacts on the detection seat are facing upwards. The electrical signal of the detection result is sent to the controller, which can be connected to an alarm or warning light. When the back of the silver spot is detected to be facing upwards, the alarm reminds the worker to remove the defective contact to prevent it from entering the next processing stage. The process of sending the welded contacts to the discharge box is divided into two parts: the first gripper sends the contacts to the detection seat, and the second gripper sends the contacts from the detection seat to the top of the discharge box. The two processes are carried out simultaneously, which improves the conveying efficiency of the contacts during discharge. The space-spaced first and second grippers can shorten the length of the discharge guide rail, reduce the space occupied by the discharge device, and make the structure of the silver spot welding machine more compact.
[0014] As a further improvement of this utility model, the discharge box includes a good product box, a defective product box, and a fourth cylinder installed on the processing table. The fourth cylinder is connected to a second pull rod for cooperative driving. The second pull rod is connected to a discharge chute. The defective product box is located on one side of the tail end of the discharge guide rail and corresponds to the position of the pneumatic gripper. The discharge chute covers the top of the defective product box, and the bottom end of the discharge chute is aligned with the good product box. The controller is electrically connected to the fourth cylinder.
[0015] With the above structure, the defective product box is set on one side of the tail end of the discharge guide rail. After the pneumatic gripper moves to the tail end of the discharge guide rail and opens, the contact falls from above the defective product box. The discharge chute covers the top of the defective product box, and the contact first falls into the discharge chute and then slides down the discharge chute. The bottom end of the discharge chute is aligned with the good product box, and the contact falls into the good product box for collection. After the controller receives the detection results from the third camera, when it detects that the silver point welded on the contact is facing upwards, the controller activates the fourth cylinder. The fourth cylinder drives the second pull rod to pull the discharge chute, so that the discharge chute moves horizontally and is offset from the defective product box. At this time, the falling contact will fall directly into the defective product box. Then the discharge chute is driven to reset, completing the automatic separation of the good and defective contact with the silver point welded on the contact. There is no need for alarms or worker intervention to remove the defective contact, saving labor costs. Attached Figure Description
[0016] Figure 1 The diagram shown is a schematic diagram of the structure of this utility model.
[0017] Figure 2 The diagram shows the contact gripping device and the structure of the first vibrating plate.
[0018] Figure 3 The diagram shows the structure of the silver dot feeding device.
[0019] Figure 4 The diagram shown is a schematic of the discharge device.
[0020] 1-Processing table, 3-Contact gripping device, 4-Silver point feeding device, 5-Welding device, 6-Discharge device, 7-Controller, 21-First vibratory feeder, 22-Second vibratory feeder, 23-First flat vibratory feeder, 24-First misalignment block, 25-Second flat vibratory feeder, 26-Second misalignment block, 221-First CCD detection device, 222-Nozzle, 31-Gripper, 32-Second guide rail, 33-Second slider, 34-Second cylinder, 41-Silver point suction nozzle, 42-Third guide rail, 43-Third... 44-Slider, 45-Third cylinder, 46-Lifting cylinder, 47-First pull rod, 48-Suction nozzle plate, 49-Suction nozzle sleeve, 60-Second CCD detection device, 61-Discharge guide rail, 62-Discharge box, 63-First slider, 64-First cylinder, 65-Pneumatic gripper, 66-Detection seat, 67-Third CCD detection device, 621-Good product box, 622-Defective product box, 623-Fourth cylinder, 624-Second pull rod, 625-Discharge chute, 651-First gripper, 652-Second gripper. Detailed Implementation
[0021] like Figures 1-4The diagram illustrates a compact linear silver spot welding machine, comprising a processing table 1, and a feeding device, a contact gripping device 3, a silver spot loading device 4, a welding device 5, a discharging device 6, and a controller 7 mounted on the processing table 1. The feeding device includes a first vibrating plate 21 and a second vibrating plate 22 for transversely conveying the contact and the silver spot, respectively. The discharging device 6 includes a transversely arranged discharging guide rail 61, a discharging box 62 located at the tail end of the discharging guide rail 61, a first slider 63 slidably connected to the discharging guide rail 61, a first cylinder 64 mounted on one end of the discharging guide rail 61 and connected to the first slider 63 for driving, and a connecting... The pneumatic gripper 65 is attached to the first slider 63. The welding device 5 is located at the first end of the discharge guide rail 61. The welding device 5 is equipped with a welding head that corresponds to the position of the pneumatic gripper 65 and can be opened and closed. The contact gripping device 3 is equipped with a gripping claw 31 that grips the contact from the first vibrating plate 21 and longitudinally transports it to the pneumatic gripper 65. The silver point feeding device 4 is equipped with a silver point suction nozzle 41 that picks up silver points from the material channel of the second vibrating plate 22 and transports them to the gripping claw 31. The controller 7 is electrically connected to the first vibrating plate 21, the second vibrating plate 22, the first cylinder 64, the pneumatic gripper 65, the contact gripping device 3, the silver point feeding device 4, and the welding device 5.
[0022] The controller 7 starts the first vibratory feeder 21 and the second vibratory feeder 22. The first vibratory feeder 21 laterally conveys the contact to the end of its material channel, aligning the contact with the clamping claw 31 of the contact clamping device 3. The controller 7 starts the clamping claw 31, which opens and closes to clamp the contact. The contact clamping device 3 then drives the clamping claw 31 longitudinally to the pneumatic clamping claw 65. When the clamping claw 31 passes the silver dot feeding device 4, it pauses its movement and uses the second vibratory feeder 22 to convey the contact laterally. The silver dot is fed to the end of its own feed channel, aligning it with the silver dot suction nozzle 41 of the silver dot feeding device 4. The silver dot suction nozzle 41 is activated to pick up the silver dot, and the silver dot feeding device 4 drives the silver dot suction nozzle 41 to move to the clamping claw 31. The silver dot suction nozzle 41 stops picking up the silver dot and places it on the contact. The silver dot feeding device 4 then drives the silver dot suction nozzle 41 to return to its original position. Afterward, the clamping claw 31 moves back to the pneumatic clamping claw 65, which opens and closes to clamp the contact. The clamping claw 31 releases the contact, and the contact clamping device 3 then releases it. The clamping jaw 31 returns to its original position. The first cylinder 64 is activated, driving the first slider 63 to move laterally on the discharge guide rail 61. The first slider 63 drives the pneumatic clamping jaw 65 and the clamped contact to move laterally, positioning the welding device 5 at the beginning of the discharge guide rail 61. When the pneumatic clamping jaw 65 stops at the beginning of the discharge guide rail 61, the welding head opens and closes to clamp the contact on the pneumatic clamping jaw 65 and the silver point for welding. After welding, the welding head opens and separates from the contact. The first cylinder 64 drives the first slider 61 to move laterally. 3. Move to the end of the discharge guide rail 61, and the pneumatic gripper 65 opens to allow the welded contact to fall into the discharge box 62; the first vibrating plate 21 and the second vibrating plate 22 realize the transverse conveying of the contact and silver point, and the pneumatic gripper 65 conveys the contact after the silver point is welded to the discharge box 62. The gripper 31 is used for longitudinal conveying to complete the conveying of the contact and silver point to the pneumatic gripper 65, reducing the empty part in the middle of the equipment, making the equipment structure more compact, and reducing the space occupied in the processing workshop.
[0023] The contact gripping device 3 includes a longitudinally arranged second guide rail 32, a second slider 33 slidably connected to the second guide rail 32, and a second cylinder 34 fixed to the second guide rail 32. The second cylinder 34 is connected to the second slider 33 for cooperative driving. The gripping claw 31 is connected to the second slider 33. The gripping claw 31 includes a mounting frame, a contact gripping claw 31 that can open and close to grip the contact on the mounting frame, a silver point adjusting gripping claw 31, and a linkage component that causes the contact gripping claw 31 and the silver point adjusting gripping claw 31 to open and close. It also includes a mounting base for mounting the mounting frame. The mounting base and the mounting frame are provided with a sliding component that allows the mounting frame to slide back and forth longitudinally along the mounting base when driven by an external force. A return spring is provided between the mounting frame and the mounting base.
[0024] The controller 7 activates the second cylinder 34, which drives the second slider 33 to move longitudinally along the second guide rail 32. This slider sequentially picks up contacts from the feed channel of the first vibrating plate 21. The silver dot feeding device 4 places silver dots on the contacts, which are then transferred to the pneumatic gripper 65 for clamping. During contact picking, the mounting bracket for installing the contact clamping claw 31 and the silver dot adjusting clamping claw 31 is mounted on the mounting base. The mounting base and mounting bracket are connected via a sliding assembly. When the mounting bracket is subjected to external force, it slides along the mounting base via the sliding assembly. During the sliding motion, the mounting frame is equipped with a cylinder or motor as a power source, causing the mounting frame to rise and fall on the mounting base until the contact clamping claw 31 aligns with the material channel of the first vibrating plate 21. The contact clamping claw 31 opens and closes to clamp the contact. When placing the silver point on the contact, the silver point adjusting clamping claw 31 opens and closes to clamp the silver point, preventing the position of the silver point from shifting during the movement of the clamping claw 31. After being clamped on the pneumatic clamping claw 65, the welding head opens and closes to weld the contact and the silver point, making the position settings of the material channel of the first vibrating plate 21, the silver point feeding device 4, and the pneumatic clamping claw 65 more flexible.
[0025] A first CCD detection device 221 is provided on one side of the second vibrating plate 22. The first CCD detection device 221 includes a first optical axis connected to the processing table 1, and a first light source and a first camera connected to the first optical axis. The first light source and the first camera are located above the second vibrating plate 22. A nozzle 222 connected to an air pump is provided on the top of the first vibrating plate 21. The air outlet of the nozzle 222 is aligned with the interior of the second vibrating plate 22. The controller 7 is electrically connected to the first CCD detection device 221.
[0026] By activating the first light source and the first camera, when the silver dots are conveyed to the top of the material channel of the second vibrating plate 22, the first camera captures an image of the silver dots for detection. The first light source illuminates the silver dots to ensure the clarity of the silver dots in the image and determines whether the silver dots are facing upwards. The electrical signal of the detection result is sent to the controller 7. When the back of the silver dots is detected to be facing upwards, the controller 7 controls the air pump to start. The nozzle 222 sprays airflow from the top position of the first vibrating plate 21 to blow the detected back-facing silver dots down. The silver dots fall back to the bottom of the second vibrating plate 22 and the conveying starts again. When the back of the silver dots is not detected to be facing upwards, the air pump does not start, and the silver dots are normally conveyed to the end of the material channel of the second vibrating plate 22, avoiding the back-facing silver dots being sucked up by the silver dot suction nozzle 41 and placed on the contact.
[0027] The feeding device also includes a first vibratory feeder 23 connected to the end of the material channel of the second vibratory plate 22, a first misalignment block 24 connected to the tail end of the first vibratory feeder 23, a second vibratory feeder 25 whose head end is connected to the first misalignment block 24 and is arranged laterally, and a second misalignment block 26 connected to the tail end of the vibratory feeder. A second CCD detection device 49 is provided on one side of the first misalignment block 24. The second CCD detection device 49 includes a second optical axis connected to the processing table 1, and a second light source and a second camera connected to the second optical axis. The second light source and the second camera are arranged above the first misalignment block 24. (Silver dot feeding device 4) The device includes a horizontally arranged third guide rail 42, a third slider 43 slidably connected to the third guide rail 42, and a third cylinder 44 fixed to the third guide rail 42. The third cylinder 44 is connected to the third slider 43 for driving. The third slider 43 is connected to a lifting cylinder 45. The lifting cylinder 45 is connected to a vertically downward first pull rod 46 for linkage. The bottom of the first pull rod 46 is provided with a suction plate 47. The suction plate 47 is provided with a suction sleeve 48 for connecting the silver dot suction nozzle 41. The two ends of the third guide rail 42 correspond to the second misalignment block 26 and the clamping claw 31, respectively. The controller 7 is electrically connected to the second CCD detection device 49.
[0028] After the silver point is conveyed to the end of its own channel by the second vibratory feeder 22, it enters the first flat vibratory feeder 23 and is conveyed to the first misalignment block 24. Then, the silver point is pushed from the first misalignment block 24 into the second flat vibratory feeder 25 for conveying. By activating the second light source and the second camera, the second camera captures an image of the silver point for detection, determining whether the silver point on the first misalignment block 24 is facing upwards. The electrical signal of the detection result is sent to the controller 7, which can be connected to an alarm or warning light. When the back of the silver point is detected, the alarm reminds the worker to manually remove the back-facing silver point, further eliminating back-facing silver points and improving the yield of the finished product after welding. After the feeder 25 delivers the silver dots to the second misalignment block 26, the third cylinder 44 is activated to drive the third slider 43 to move laterally along the third guide rail 42. The third slider 43 drives the silver dot suction nozzle 41, which is connected by the lifting cylinder 45, the first pull rod 46, the suction nozzle plate 47, and the suction nozzle sleeve 48, to move laterally above the second misalignment block 26. The lifting cylinder 45 is activated to drive the first pull rod 46 to lower the silver dot suction nozzle 41. The silver dot suction nozzle 41 starts to pick up the silver dots, and then moves laterally to the top of the clamping claw 31. It then lowers and places the silver dots on the contact head that is clamped by the clamping claw 31. Finally, the silver dot suction nozzle 41 returns to its original position, making the movement trajectory of the silver dot suction nozzle 41 more flexible when picking up and placing silver dots.
[0029] The discharge device 6 has a detection seat 66 connected to the processing table 1 and a third CCD detection device 67 on one side. The third CCD detection device 67 includes a third optical axis, and a third light source and a third camera connected to the third optical axis. The third light source and the third camera are set above the detection seat 66. The position and shape of the detection seat 66 match the contacts held by the pneumatic gripper 65. The gripper 31, the detection seat 66 and the discharge box 62 are arranged at equal intervals in the horizontal direction. The pneumatic gripper 65 includes a first gripper 651 and a second gripper 652 arranged at intervals in the horizontal direction. The first slider 63 is located at the beginning of the discharge guide rail 61. The positions of the first gripper 651 and the second gripper 652 correspond to the gripper 31 and the detection seat 66, respectively. The controller 7 is electrically connected to the third CCD detection device 67.
[0030] The contact is conveyed to the pneumatic gripper 65 via the gripper 31. First, the first gripper 651 opens and closes to clamp the contact. At this time, the second gripper 652 corresponds to the position of the detection seat 66. After the welding device 5 welds the contact to the silver spot, the first cylinder 64 drives the first slider 63 to move towards the tail end of the discharge guide rail 61, aligning the first gripper 651 with the position of the detection seat 66. The gripper 31, detection seat 66, and discharge box 62 are arranged at equal intervals laterally. At this time, the second gripper 651... 2. Move to the position of the discharge box 62. The first gripper 651 opens and places the contact on the detection seat 66. Then, the first slider 63 moves in the opposite direction back to the beginning of the discharge guide rail 61, causing the second gripper 652 to align with the detection seat 66. The second gripper 652 opens and closes to grip the contact on the detection seat 66. When the first slider 63 moves to the end of the discharge guide rail 61 again, after the first gripper 651 aligns with the detection seat 66, the second gripper 652 moves above the discharge box 62. The second gripper 652 opens to allow the contact to fall into the discharge box 62 for collection. When the contact is sent to the detection seat 66, the third light source and the third camera are activated. The third camera captures an image of the silver spot for detection, determining whether the silver spot welded on the contact on the detection seat 66 is facing upwards. The electrical signal of the detection result is sent to the controller 7, which can be connected to an alarm or warning light. When the back of the silver spot is detected to be facing upwards, an alarm is triggered to remind the worker to remove the defective contact to prevent it from entering the next processing stage. The process of sending the welded contact to the discharge box 62 is divided into two parts: the first gripper 651 sends the contact to the detection seat 66, and the second gripper 652 sends the contact from the detection seat 66 to the top of the discharge box 62. The two processes are carried out simultaneously, which improves the conveying efficiency of the contact during discharge. The space occupied by the spaced first gripper 651 and second gripper 652 can be reduced by shortening the length of the discharge guide rail 61, reducing the space occupied by the discharge device 6, and making the mechanism of the silver spot welding machine more compact.
[0031] The discharge box 62 includes a good product box 621, a defective product box 622, and a fourth cylinder 623 installed on the processing table 1. The fourth cylinder 623 is connected to a second pull rod 624 for coordinated driving. The second pull rod 624 is connected to a discharge chute 625. The defective product box 622 is located on one side of the tail end of the discharge guide rail 61 and corresponds to the position of the pneumatic gripper 65. The discharge chute 625 covers the top of the defective product box 622, and the bottom end of the discharge chute 625 is aligned with the good product box 621. The controller 7 is electrically connected to the fourth cylinder 623.
[0032] The defective product box 622 is positioned on one side of the tail end of the discharge guide rail 61. After the pneumatic gripper 65 moves to the tail end of the discharge guide rail 61 and opens, the contact falls from above the defective product box 622. The contact is covered by the discharge chute 625, and then falls into the discharge chute 625 and slides down it. The bottom end of the discharge chute 625 is aligned with the good product box 621, and the contact falls into the good product box 621 for collection. The controller 7 receives the detection data from the third camera. Upon detection that the silver spot welded on the contact is facing upwards, the controller 7 activates the fourth cylinder 623. The fourth cylinder 623 drives the second pull rod 624 to pull the discharge chute 625, causing the discharge chute 625 to move horizontally and be separated from the defective product box 622. At this time, the falling contact will fall directly into the defective product box 622. Then, the discharge chute 625 is driven to reset, completing the automatic separation of good and defective contacts with welded silver spots. No alarm is needed and workers need to intervene to remove the defective contacts, saving labor costs.
Claims
1. A compact linear silver spot welding machine, characterized in that: The device includes a processing table, and a feeding device, a contact gripping device, a silver spot feeding device, a welding device, a discharging device, and a controller mounted on the processing table. The feeding device includes a first vibrating plate and a second vibrating plate for transversely conveying contacts and silver spots, respectively. The discharging device includes a transversely arranged discharging guide rail, a discharging box located at the end of the discharging guide rail, a first slider slidably connected to the discharging guide rail, a first cylinder mounted at one end of the discharging guide rail and connected to the first slider for driving, and a pneumatic gripper connected to the first slider. The welding device is located at the beginning of the discharging guide rail and has a welding head that corresponds to the position of the pneumatic gripper and can be opened and closed. The contact gripping device has a gripping claw that grips contacts from the first vibrating plate and longitudinally conveys them to the pneumatic gripper. The silver spot feeding device has a silver spot suction nozzle that draws silver spots from the material channel of the second vibrating plate and conveys them to the gripping claw. The controller is electrically connected to the first vibrating plate, the second vibrating plate, the first cylinder, the pneumatic gripper, the contact gripping device, the silver spot feeding device, and the welding device.
2. The compact linear silver spot welding machine according to claim 1, characterized in that: The contact gripping device includes a longitudinally arranged second guide rail, a second slider slidably connected to the second guide rail, and a second cylinder fixed to the second guide rail. The second cylinder is connected to the second slider for cooperative driving. The gripping claw is connected to the second slider. The gripping claw includes a mounting frame, a contact gripping claw that can open and close to grip the contact, a silver point adjusting gripping claw, and a linkage component that causes the contact gripping claw and the silver point adjusting gripping claw to open and close. It also includes a mounting base for mounting the mounting frame. The mounting base and the mounting frame are provided with a sliding component that allows the mounting frame to slide back and forth longitudinally along the mounting base when driven by an external force. A return spring is provided between the mounting frame and the mounting base.
3. The compact linear silver spot welding machine according to claim 1, characterized in that: The second vibratory plate is provided with a first CCD detection device on one side. The first CCD detection device includes a first optical axis connected to the processing table, and a first light source and a first camera connected to the first optical axis. The first light source and the first camera are located above the second vibratory plate. The top of the first vibratory plate is provided with a nozzle connected to an air pump. The air outlet of the nozzle is aligned with the inside of the second vibratory plate. The controller is electrically connected to the first CCD detection device.
4. The compact linear silver spot welding machine according to claim 1, characterized in that: The feeding device also includes a first vibratory feeder connected to the end of the material channel of the second vibratory plate, a first misalignment block connected to the tail end of the first vibratory feeder, a second vibratory feeder connected at its head end to the first misalignment block and arranged laterally, and a second misalignment block connected to the tail end of the vibratory feeder. A second CCD detection device is provided on one side of the first misalignment block. The second CCD detection device includes a second optical axis connected to the processing table, and a second light source and a second camera connected to the second optical axis. The second light source and the second camera are located above the first misalignment block. The silver dot feeding device includes a third guide rail arranged laterally, a third slider slidably connected to the third guide rail, and a third cylinder fixed to the third guide rail. The third cylinder is connected to the third slider for cooperative driving. The third slider is connected to a lifting cylinder. The lifting cylinder is connected to a vertically downward first pull rod for cooperative linkage. A suction plate is provided at the bottom of the first pull rod. The suction plate is provided with a suction sleeve for connecting the silver dot suction nozzle. The two ends of the third guide rail correspond to the second misalignment block and the clamping claw, respectively. The controller is electrically connected to the second CCD detection device.
5. The compact linear silver spot welding machine according to claim 1, characterized in that: One side of the discharge device is equipped with a detection seat and a third CCD detection device connected to the processing table. The third CCD detection device includes a third optical axis, and a third light source and a third camera connected to the third optical axis. The third light source and the third camera are located above the detection seat. The position and shape of the detection seat match the contacts of the pneumatic gripper. The gripper, the detection seat, and the discharge box are arranged at equal intervals in the horizontal direction. The pneumatic gripper includes a first gripper and a second gripper arranged at intervals in the horizontal direction. When the first slider is located at the beginning of the discharge guide rail, the positions of the first gripper and the second gripper correspond to the gripper and the detection seat, respectively. The controller is electrically connected to the third CCD detection device.
6. The compact linear silver spot welding machine according to claim 5, characterized in that: The discharge box includes a good product box, a defective product box, and a fourth cylinder mounted on the processing table. The fourth cylinder is connected to a second pull rod for coordinated driving. The second pull rod is connected to a discharge chute. The defective product box is located on one side of the tail end of the discharge guide rail and corresponds to the position of the pneumatic gripper. The discharge chute covers the top of the defective product box, and the bottom end of the discharge chute is aligned with the good product box. The controller is electrically connected to the fourth cylinder.