Small part welding device and automatic feeding and discharging welding equipment

Abstract

The invention relates to the technical field of welding equipment, in particular to a small part welding device and automatic feeding and discharging welding equipment. The small part welding device comprises a transferring mechanism, a first feeding mechanism, a second feeding mechanism, a welding mechanism and a discharging mechanism, the transferring mechanism comprises a transferring channel and a jig, and the jig is provided with a first profiling groove and a limiting hole. The transfer channel bears jigs so as to drive the jigs to sequentially flow among the first feeding station, the second feeding station, the welding station and the discharging station. The first feeding mechanism is arranged on the first feeding station so that the small pieces can be placed in the limiting holes of the jigs. The second feeding mechanism is arranged on the second feeding station so that the workpiece can be placed in the first profiling groove of the jig. The welding mechanism is arranged on the welding station so as to correspondingly weld the workpieces in the jig and the small workpieces. The transferring mechanism, the first feeding mechanism, the second feeding mechanism, the welding mechanism and the discharging mechanism cooperate to achieve automatic welding of the small parts and the workpieces, and the welding efficiency of the small parts is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a small parts welding device and an automatic loading and unloading welding equipment. Background Technology

[0002] In fields such as stamping products and 3C electronic products, many small parts (i.e. small components, such as studs) are in bulk form. The welding of these small components is mostly done by single-station semi-automatic welding equipment. Due to the small size of the components, operation is inconvenient, resulting in slow loading speed of the welding equipment, low welding efficiency, which is not conducive to production control and makes it difficult to meet the needs of mass production. Summary of the Invention

[0003] The purpose of this invention is to provide a small parts welding device and an automatic loading and unloading welding equipment to improve the welding efficiency of small parts and meet the needs of mass production.

[0004] To achieve this objective, the technical solution adopted by the present invention is as follows: Small part welding equipment, including: The transfer mechanism includes a transfer channel and a fixture. The fixture is provided with a first contour groove for accommodating workpieces, and a limiting hole for accommodating small parts is provided in the first contour groove. The transfer channel carries the fixture so as to drive the fixture to flow sequentially between a first loading station, a second loading station, a welding station and an unloading station. A first feeding mechanism is provided at the first feeding station to place the small part into the limiting hole of the fixture that reaches the first feeding station; The second feeding mechanism is provided at the second feeding station to place the workpiece into the first contour groove of the fixture that reaches the second feeding station; A welding mechanism is provided at the welding station to weld the workpieces and small parts one by one in the fixture that arrives at the welding station. A feeding mechanism is provided at the feeding station to remove the welded workpiece from the fixture that arrives at the feeding station.

[0005] As an optional solution, the fixture includes a carrier plate, a clamping plate, and an elastic element. The carrier plate is provided with a first contouring groove and a limiting hole. A sliding groove communicating with the limiting hole is provided in the first contouring groove. The clamping plate is movably installed in the sliding groove through the elastic element and has a locking position for fixing the small part and an unlocking position for releasing the small part. The elastic element causes the clamping plate to move toward the locking position. Auxiliary mechanisms are provided at the first loading station, the second loading station, and the unloading station. Each auxiliary mechanism includes a bracket, a first driving component, a top plate, and a buckle. The buckle is installed on the top plate. The first driving component is located on the bracket and drives the clamping plate to move up and down in the height direction, so that the top plate can be lowered to a first position or raised to a second position. When the top plate is lowered to the first position, the buckle pushes the clamping plate to the unlocked position. When the top plate is raised to the second position, the buckle disengages from the clamping plate.

[0006] As an optional solution, the fixture further includes a push rod, the limiting hole penetrates both ends of the carrier plate along the height direction, and the push rod is movably inserted into the limiting hole; The auxiliary mechanism further includes a second driving member, a base plate, and a top column. Along the height direction, the base plate is located below the top plate, and the top column is mounted on the base plate. The second driving member is disposed on the bracket and drives the base plate to move up and down along the height direction, so that the base plate can be raised to a third position or lowered to a fourth position. When the base plate is raised to the third position, the top column extends into the limiting hole and pushes the top rod to rise, so as to push the small part out of the limiting hole. When the base plate is lowered to the fourth position, the top column disengages from the limiting hole.

[0007] As an optional solution, the transfer channel includes: A magnetic levitation track, wherein the magnetic levitation track is provided with a first loading station, a second loading station, a welding station and a unloading station; A moving slide, which carries the fixture, is disposed on the magnetic levitation track.

[0008] As an optional solution, the magnetic levitation track includes: Two main tracks, both of which extend along the length direction and are arranged parallel to each other along the width direction. One of the main tracks is provided with the first loading station, and the other main track is provided with the second loading station, the welding station and the unloading station in sequence along the length direction. Two conversion tracks are respectively disposed at both ends of the main track along the length direction, and each conversion track slides along the width direction so that each conversion track selectively connects to one end of the main track along the length direction. The conversion drive unit is connected to the conversion track transmission.

[0009] As an optional solution, the main track is provided with a slide rail in parallel, and the moving slide is provided with a slider, the slider slidingly engaging with the slide rail.

[0010] As an optional solution, the first loading station includes two sub-stations, one of which is a main track with two sub-stations spaced apart along its length, and a buffer station is provided between the two sub-stations; The small part welding device also includes a vibrating feeder for conveying the small parts; each of the sub-stations is equipped with the vibrating feeder and the first feeding mechanism.

[0011] As an optional solution, the small part welding device further includes a secondary positioning component, which is provided with a second contour groove to accommodate the workpiece; the secondary positioning component is provided at both the second loading station and the unloading station.

[0012] As an optional solution, the small part welding device further includes a detection mechanism, which includes: The third driving component has an output direction parallel to the length direction; The fourth driving component is connected to the output end of the third driving component, and the output direction of the fourth driving component is parallel to the width direction; The detection component is connected to the output terminal of the fourth driving component.

[0013] An automatic loading and unloading welding equipment includes an automatic loading device, an automatic unloading device, and the aforementioned small part welding device. The automatic loading device is used to load the workpiece to be welded onto the small part welding device, and the automatic unloading device is used to unload the workpiece after it has been welded by the small part welding device.

[0014] The beneficial effects of this invention are as follows: The small-part welding device proposed in this invention has a transfer channel carrying a fixture, which sequentially flows between a first loading station, a second loading station, a welding station, and an unloading station. When the fixture reaches the first loading station, a first loading mechanism places the small part into the limiting hole of the fixture. When the fixture reaches the second loading station, a second loading mechanism places the workpiece into the first contour groove of the fixture, ensuring that both the small part and the workpiece are placed within the fixture. When the fixture reaches the welding station, a welding mechanism welds the workpiece and the small part one-to-one. When the fixture reaches the unloading station, an unloading mechanism removes the welded workpiece from the fixture. Through the coordinated operation of the transfer mechanism, the first loading mechanism, the second loading mechanism, the welding mechanism, and the unloading mechanism, automatic welding of small parts and workpieces is achieved, improving the welding efficiency of small parts and facilitating the control of the welding process to meet the needs of mass production.

[0015] The automatic loading and unloading welding equipment proposed in this invention includes an automatic loading device, an automatic unloading device, and the aforementioned small part welding device. The automatic loading device automatically loads the workpieces into the small part welding device, and the automatic unloading device unloads the workpieces after welding by the small part welding device, thereby realizing automatic loading, automatic welding, and automatic unloading of small parts, improving the welding efficiency of small parts, facilitating the control of the welding process of small parts, and meeting the needs of mass production. Attached Figure Description

[0016] Figure 1 This is a top view of the automatic loading and unloading welding equipment provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the small-part welding device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the transfer channel and auxiliary mechanism provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first feeding mechanism provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the fixture provided in an embodiment of the present invention; Figure 6 yes Figure 5 A magnified view of a section at point A in the middle; Figure 7 This is a cross-sectional view of the fixture provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the secondary positioning component provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the detection mechanism provided in an embodiment of the present invention.

[0017] The component names and labels in the diagram are as follows: 100. Automatic feeding device; 200. Automatic unloading device; 300. Platform; 1. Transfer channel; 11. Moving slide table; 111. Slider; 12. Main track; 13. Transfer track; 14. Slide rail; 2. Fixture; 21. Carrier plate; 211. First contouring groove; 212. Limiting hole; 22. Clamping plate; 23. Top rod; 3. First feeding mechanism; 31. Camera; 32. Lens; 33. Light source; 34. Feeding cylinder; 35. Suction nozzle; 4. Second feeding mechanism; 5. Welding mechanism; 6. Unloading mechanism; 7. Auxiliary mechanism; 71. Support; 72. First driving component; 73. Top plate; 74. Clamping buckle; 75. Second driving component; 76. Base plate; 77. Top column; 8. Vibrating feeder; 9. Secondary positioning component; 91. Second contouring groove; 10. Detection mechanism; 101. Third driving component; 102. Fourth driving component; 103. Detection component. Detailed Implementation

[0018] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0019] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1As shown, this embodiment proposes a small part welding device and an automatic loading and unloading welding equipment. The automatic loading and unloading welding equipment includes an automatic loading device 100, an automatic unloading device 200, and a small part welding device. The automatic loading device 100 is used to load the workpiece to be welded into the small part welding device, and the automatic unloading device 200 is used to unload the workpiece after it has been welded by the small part welding device.

[0024] Specifically, the automatic feeding device 100 includes a feeding tray, a feeding conveying mechanism, and a feeding robot, while the automatic unloading mechanism 6 includes an unloading tray, an unloading conveying mechanism, and an unloading robot. The feeding tray holds workpieces to be welded. The feeding conveying mechanism transports the feeding tray to one side of the small-part welding device so that the feeding robot can load the workpieces from the tray into the small-part welding device. The unloading conveying mechanism transports the unloading tray to one side of the small-part welding device so that the unloading robot can unload the welded workpieces into the unloading tray. Since both the automatic feeding device 100 and the automatic unloading device 200 are existing technologies, their detailed components and loading / unloading processes will not be described in detail.

[0025] The aforementioned small-part welding devices are mostly used in the welding of many small parts. Due to the small size of the parts, operation is inconvenient, resulting in a slow loading speed and low welding efficiency of the small-part welding devices, which is not conducive to production control and makes it difficult to meet the needs of mass production.

[0026] To solve the above problems, such as Figures 1-6 As shown, the small-part welding device includes a transfer mechanism, a first loading mechanism 3, a second loading mechanism 4, a welding mechanism 5, and an unloading mechanism 6. The transfer mechanism includes a transfer channel 1 and a fixture 2. The fixture 2 is provided with a first contour groove 211 for accommodating workpieces, and a limiting hole 212 for accommodating small parts is provided in the first contour groove 211. The transfer channel 1 carries the fixture 2, so as to drive the fixture 2 to flow sequentially between the first loading station, the second loading station, the welding station, and the unloading station. The first loading mechanism 3 is located at the first loading station to place the small parts into the limiting hole 212 of the fixture 2 that arrives at the first loading station. The second loading mechanism 4 is located at the second loading station to place the workpieces into the first contour groove 211 of the fixture 2 that arrives at the second loading station. The welding mechanism 5 is located at the welding station to weld the workpieces in the fixture 2 that arrive at the welding station to the small parts one by one. The unloading mechanism 6 is set at the unloading station to remove the welded workpiece from the fixture 2 that arrives at the unloading station.

[0027] The transfer channel 1 carries the fixture 2, which flows sequentially between the first loading station, the second loading station, the welding station, and the unloading station. When fixture 2 reaches the first loading station, the first loading mechanism 3 places the small part into the limiting hole 212 of fixture 2. When fixture 2 reaches the second loading station, the second loading mechanism 4 places the workpiece into the first contour groove 211 of fixture 2, ensuring that both the small part and the workpiece are placed within fixture 2. When fixture 2 reaches the welding station, the welding mechanism 5 welds the workpiece and the small part in fixture 2 one-to-one. When fixture 2 reaches the unloading station, the unloading mechanism 6 removes the welded workpiece from fixture 2. Through the coordinated operation of the transfer mechanism, the first loading mechanism 3, the second loading mechanism 4, the welding mechanism 5, and the unloading mechanism 6, automatic welding of small parts and workpieces is achieved, improving the welding efficiency of small parts and facilitating the control of the welding process to meet the needs of mass production.

[0028] like Figure 1 As shown, the small part welding device also includes a platform 300, on which a transfer mechanism, a first feeding mechanism 3, a second feeding mechanism 4, a welding mechanism 5 and a unloading mechanism 6 are arranged. The feeding conveying mechanism of the automatic feeding device 100 and the unloading conveying mechanism of the automatic unloading device 200 are both arranged along the width direction (front and back direction in the figure), and the automatic feeding device 100 and the automatic unloading device 200 are arranged at intervals along the length direction (left and right direction in the figure) on the front side of the platform 300.

[0029] like Figure 2 and Figure 3 As shown, the transfer channel 1 includes a magnetic levitation track and a moving slide 11. The magnetic levitation track is equipped with a first loading station, a second loading station, a welding station, and an unloading station. The moving slide 11 carries the fixture 2 and is positioned on the magnetic levitation track. The transfer channel 1 achieves closed-loop adjustment through servo electromagnetic control. The high coupling between the magnetic levitation track and the moving slide 11 provides the magnetic levitation track with the electromagnetic foundation for levitation, guidance, and drive. The moving slide 11 drives the fixture 2 to complete high-precision movement, allowing the fixture 2 to move sequentially to the first loading station, the second loading station, the welding station, and the unloading station via magnetic levitation. Furthermore, the moving speed, acceleration, and position of the fixture 2 can be precisely controlled. In addition, the magnetic levitation method for transferring the fixture 2 results in low loss and high adaptability in the contactless transmission of the transfer channel 1, while also reducing noise.

[0030] In this embodiment, as Figure 1 and Figure 2As shown, the magnetic levitation track includes two main tracks 12, two transition tracks 13, and a transition drive component. Both main tracks 12 extend along their length and are arranged parallel to each other along their width. One main track 12 has a first loading station, and the other main track 12 has a second loading station, a welding station, and an unloading station spaced apart along its length. The two transition tracks 13 are respectively located at both ends of the main tracks 12 along their length, and each transition track 13 slides along its width, allowing each transition track 13 to selectively connect with the corresponding end of one of the main tracks 12 along its length. The transition drive component is drive-connected to the transition tracks 13.

[0031] Specifically, two parallel main tracks 12 are arranged on the platform 300. The rear main track 12 is equipped with a first loading station, while the front main track 12 is equipped with a second loading station, a welding station, and an unloading station at intervals along its length. This allows the fixture 2 to move linearly with the moving slide 11, improving the stability of the fixture 2. Furthermore, a switching dock is provided at both ends of the two main tracks 12 along their length. Each switching dock is equipped with a switching track 13 and a switching drive. The switching drive is a motor. The switching track 13 has the same structure as the main track 12, both being magnetically levitated tracks. This allows the switching track 13 to be highly coupled with the moving slide 11, providing the electromagnetic foundation for levitation, guidance, and drive of the moving slide 11.

[0032] After passing the welding station, the fixture 2 moves along the length direction from left to right with the corresponding moving slide 11 to the right end of the main track 12. At this time, the right end of the conversion track 13 is connected to the main track 12 located in front. The moving slide 11 and the fixture 2 are slid to the right end of the conversion track 13. The conversion drive drives the conversion track 13 to move along the width direction from front to back to the main track 12 located in the rear, until the right end of the conversion track 13 is connected to the main track 12 located in the rear. Then the moving slide 11 and the fixture 2 are slid to the main track 12 located in the rear. Similarly, after passing the first loading station, the fixture 2 moves from right to left along the corresponding moving slide 11 along the length direction to the left end of the main track 12. At this time, the left end of the conversion track 13 is connected to the main track 12 located on the rear side. The moving slide 11 and the fixture 2 it carries slide to the left end of the conversion track 13. The conversion drive drives the conversion track 13 to move from back to front along the width direction to the main track 12 located on the front side, until the left end of the conversion track 13 is connected to the main track 12 located on the front side. Then the moving slide 11 and the fixture 2 it carries slide to the main track 12 located on the front side.

[0033] It should be noted that the first loading station includes two sub-stations. One main track 12 has two sub-stations spaced apart along its length, and a buffer station is provided between the two sub-stations. The small part welding device also includes a vibrating feeder 8, which is used to transport small parts. Each sub-station is equipped with a vibrating feeder 8 and the first loading mechanism 3. By setting two sub-stations, the loading frequency and number of loading operations are increased, avoiding impact on the operating cycle of the transfer channel 1. In this embodiment, the small part is a stud. Randomly stacked studs are oriented, sorted, and quantitatively transported by the vibrating feeder 8. Since the vibrating feeder 8 is existing equipment, its structure and working principle will not be described in detail. Furthermore, the buffer station buffers the fixture 2; for example, the moving slide 11 arriving at the buffer station can be kept stationary by controlling a magnetic levitation track.

[0034] At the first substation, the first feeding mechanism 3 places the two studs output from the adjacent vibrating feeder 8 into the limiting holes 212 in the two first contour grooves 211 within the fixture 2 located at the first substation. Then, the moving slide 11 at the first substation carries the fixture 2 and moves it to the buffer station. At the same time, the moving slide 11 and the corresponding fixture 2 buffered at the buffer station move to the second substation. At the second substation, another first feeding mechanism 3 places the two studs output from the adjacent vibrating feeder 8 into the limiting holes 212 in the other two first contour grooves 211 within the fixture 2 located at the second substation, thereby achieving automatic feeding of four studs.

[0035] Furthermore, such as Figure 3 As shown, a slide rail 14 is arranged parallel to the main track 12, and a slider 111 is correspondingly arranged on the movable slide table 11. The slider 111 slides in conjunction with the slide rail 14. By setting the slider 111 and the slide rail 14 in a sliding fit, the sliding accuracy of the movable slide table 11 along the main track 12 is improved, so that the fixture 2 moves accurately to each workstation with the movable slide table 11.

[0036] like Figure 4As shown, the first feeding mechanism 3 includes a vacuum generator and a multi-degree-of-freedom robotic arm. The robotic arm's execution end is equipped with a camera 31, a lens 32, a light source 33, a feeding cylinder 34, and a suction nozzle 35. The feeding cylinder 34 is driven by the suction nozzle 35 to drive the suction nozzle 35 to move vertically. The suction nozzle 35 is connected to the vacuum generator to grasp small parts output by the vibrating feeder 8 through vacuum suction. Each first feeding mechanism 3 includes two suction nozzles 35 to simultaneously grasp two small parts. The camera 31, through the lens 32, photographs and positions the small parts output by the vibrating feeder 8 and the limiting hole 212 of the fixture 2, enabling the robotic arm to accurately grasp the two small parts output by the vibrating feeder 8 and precisely place them within the limiting hole 212 of the fixture 2. The light source 33 provides good illumination for the camera 31 and lens 32, thereby improving the positioning accuracy of the small parts and the limiting hole 212 of the fixture 2. Since taking pictures of small items and locating them using camera 31 and lens 32 is a conventional technique in positioning, the working principle of camera 31 and lens 32 will not be elaborated further.

[0037] like Figure 5 and Figure 6 As shown, the fixture 2 includes a carrier plate 21, a clamping plate 22, and an elastic element. The carrier plate 21 is provided with a first contouring groove 211 and a limiting hole 212. A sliding groove communicating with the limiting hole 212 is provided in the first contouring groove 211. The clamping plate 22 is movably installed in the sliding groove by the elastic element and has a locking position for fixing the small part and an unlocking position for releasing the small part. The elastic element moves the clamping plate 22 toward the locking position. The aforementioned elastic element is a spring. An unlocking block is provided at the top of the clamping plate 22 away from the limiting hole 212, and a V-shaped locking groove is provided at the end of the clamping plate 22 near the limiting hole 212. By pushing the unlocking block, the clamping plate 22 is moved in the direction away from the limiting hole 212 to the unlocking position, so that the first feeding mechanism 3 places the gripped small part into the corresponding limiting hole 212. When the unlocking block is released, the clamping plate 22 moves toward the limiting hole 212 to the locking position under the action of the elastic element. At this time, the locking groove of the clamping plate 22 clamps the small part to fix the small part in the corresponding limiting hole 212.

[0038] like Figure 3 As shown, auxiliary mechanisms 7 are provided at the first loading station, the second loading station, and the unloading station. Each auxiliary mechanism 7 includes a bracket 71, a first driving member 72, a top plate 73, and a buckle 74, with the buckle 74 mounted on the top plate 73. The first driving member 72 is mounted on the bracket 71 and drives the clamping plate 22 to move vertically, allowing the top plate 73 to descend to a first position or rise to a second position. When the top plate 73 descends to the first position, the buckle 74 pushes the clamping plate 22 to the unlocked position; when the top plate 73 rises to the second position, the buckle 74 disengages from the clamping plate 22.

[0039] Specifically, the first driving component 72 is a cylinder, and the bottom end of the base plate 76 is provided with two buckles 74. It should be noted that the side of the unlocking block facing the locking groove is the pressing side, and the top edge of the pressing side is provided with an arc surface. At the two sub-stations, the cylinder drives the top plate 73 to descend to the first position, and the two buckles 74 respectively slide to the pressing side of the unlocking block by pressing against the arc surface of the unlocking block of the two clamping plates 22, thereby pushing the unlocking block to the unlocking position so that the first feeding mechanism 3 can place the gripped small part into the corresponding limiting hole 212. When the fixture 2 leaves the sub-station with the corresponding moving slide 11, when the top plate 73 rises to the second position, the buckles 74 disengage from the clamping plate 22, and the clamping plate 22 moves to the locking position under the action of the elastic element so that the locking groove of the clamping plate 22 clamps the small part.

[0040] like Figure 3 and Figure 7 As shown, the fixture 2 also includes a push rod 23, and a limiting hole 212 passes through both ends of the carrier plate 21 along the height direction. The push rod 23 is movably inserted into the limiting hole 212. The auxiliary mechanism 7 also includes a second drive member 75, a base plate 76, and a top column 77. Along the height direction, the base plate 76 is located below the top plate 73, and the top column 77 is mounted on the base plate 76. The second drive member 75 is disposed on the bracket 71 and drives the base plate 76 to move up and down along the height direction, so that the base plate 76 can be raised to the third position or lowered to the fourth position. When the base plate 76 is raised to the third position, the top column 77 extends into the limiting hole 212 and pushes the push rod 23 to rise, so as to push the small part out of the limiting hole 212; when the base plate 76 is lowered to the fourth position, the top column 77 disengages from the limiting hole 212.

[0041] Specifically, the second driving component 75 is also a cylinder, and four pushers 77 are provided at the top of the base plate 76. The pusher rod 23 includes two split rods, each of which is a variable diameter rod that is thicker in the middle and thinner at both ends. The limiting hole 212 consists of two connected sub-holes, each of which is a variable diameter hole adapted to the corresponding split rod. The axial length of the relatively large inner diameter portion of the sub-hole is greater than the axial length of the thicker outer diameter portion of the split rod. This ensures that the pusher rod 23 moves axially along the limiting hole 212 while preventing the pusher rod 23 from slipping out of the limiting hole 212. The second driving component 75 is a cylinder, and the pushers 77 are mounted on the base plate 76 by springs so that the pushers 77 and the pushers 23 collide elastically, avoiding rigid pressing of the pushers 77 against the pushers 23, thus achieving a good shock absorption and buffering effect.

[0042] At the unloading station, the cylinder drives the base plate 76 to rise to the third position. Four top columns 77 extend into the four limiting holes 212 of the fixture 2 located at the unloading station and push the top rod 23 upwards to push the small part out of the limiting holes 212, allowing the unloading mechanism 6 to unload the welded workpiece from the fixture 2. When the base plate 76 rises to the third position, the top plate 73 descends to the first position, causing the clamping plate 22 to move to the unlocking position, unlocking the small part and preventing it from being ejected from the limiting holes 212. After unloading is completed, the top plate 73 of the auxiliary mechanism 7 at the unloading station rises to the second position, and the base plate 76 descends to the fourth position, preventing interference with the sliding of the moving slide 11 and the supporting fixture 2 at the welding station along the front main track 12 to the right.

[0043] It should be noted that the aforementioned unloading mechanism 6 also includes a vacuum generator and a multi-degree-of-freedom robotic arm. The robotic arm's execution end is equipped with four suction heads, which are connected to the vacuum generator to grip the four workpieces in the fixture 2 at the unloading station via vacuum adsorption and unload the workpieces into the unloading tray of the automatic unloading mechanism 6. It should be noted that the loading mechanism is identical to the unloading mechanism 6, and its details will not be elaborated upon.

[0044] like Figure 2 and Figure 8 As shown, the small-part welding device also includes a secondary positioning component 9, which is provided with a second contour groove 91 for accommodating the workpiece. Secondary positioning components 9 are provided at both the second loading station and the unloading station. When workpieces are being loaded from the loading tray, the loading robot needs to place four workpieces into the second contour groove 91 of the secondary positioning component 9 at the second loading station. The workpieces are positioned by the fixed-position secondary positioning component 9, allowing the loading mechanism to grasp the workpieces from the secondary positioning component 9 at the second loading station, thus improving the accuracy of the loading process. When the welded workpieces are unloaded from the fixture 2 at the unloading station, the unloading mechanism 6 places the four workpieces from the fixture 2 at the unloading station into the second contour groove 91 of the secondary positioning component 9 at the unloading station. The workpieces are positioned by the fixed-position secondary positioning component 9, allowing the unloading mechanism 6 to grasp the workpieces from the secondary positioning component 9 at the unloading station, thus improving the accuracy of the unloading process. By setting two secondary positioning components 9, the process of picking up and placing products from the pallet (loading pallet and unloading pallet) to the fixture 2 is more precise, which improves the loading and unloading accuracy of the small parts welding device.

[0045] like Figure 2 and Figure 9As shown, the small part welding device also includes a detection mechanism 10, which includes a third drive member 101, a fourth drive member 102, and a detection component 103. The output direction of the third drive member 101 is parallel to the length direction. The output end of the third drive member 101 is connected to the fourth drive member 102, and the output direction of the fourth drive member 102 is parallel to the width direction. The output end of the fourth drive member 102 is connected to the detection component 103. The detection mechanism 10 is arranged adjacent to the secondary positioning member 9 at the unloading station, so as to automatically detect the welded workpiece in the second contour groove 91 of the secondary positioning member 9 through the detection component 103, so as to detect whether the welding quality of the small part and the workpiece meets the process requirements, thereby timely detecting unqualified workpieces.

[0046] Specifically, both the third driving component 101 and the fourth driving component 102 are transfer modules, enabling the detection component 103 to move along the length and width directions to adjust its position, thus allowing it to move to different detection positions according to detection requirements. In this embodiment, the detection component 103 is an image detector to improve its detection accuracy and precision, avoiding false detections or missed detections.

[0047] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small-part welding device, characterized in that, include: The transfer mechanism includes a transfer channel (1) and a fixture (2). The fixture (2) is provided with a first contour groove (211) for accommodating workpieces. The first contour groove (211) is provided with a limiting hole (212) for accommodating small parts. The transfer channel (1) carries the fixture (2) to drive the fixture (2) to flow sequentially between the first loading station, the second loading station, the welding station and the unloading station. The first feeding mechanism (3) is set at the first feeding station to place the small part into the limiting hole (212) of the fixture (2) that reaches the first feeding station; The second feeding mechanism (4) is set at the second feeding station to place the workpiece in the first contour groove (211) of the fixture (2) that reaches the second feeding station; Welding mechanism (5) is set at the welding station to weld the workpieces in the fixture (2) that arrive at the welding station to the small parts one by one; The unloading mechanism (6) is located at the unloading station to remove the welded workpiece from the fixture (2) that arrives at the unloading station.

2. The small-part welding device according to claim 1, characterized in that, The fixture (2) includes a carrier plate (21), a clamping plate (22), and an elastic element. The carrier plate (21) is provided with a first contour groove (211) and a limiting hole (212). A sliding groove communicating with the limiting hole (212) is provided in the first contour groove (211). The clamping plate (22) is movably installed in the sliding groove through the elastic element and has a locking position for fixing the small part and an unlocking position for releasing the small part. The elastic element causes the clamping plate (22) to move toward the locking position. Auxiliary mechanisms (7) are provided at the first loading station, the second loading station, and the unloading station. The auxiliary mechanism (7) includes a bracket (71), a first driving member (72), a top plate (73), and a buckle (74). The buckle (74) is installed on the top plate (73). The first driving member (72) is located on the bracket (71) and drives the clamping plate (22) to move up and down in the height direction so that the top plate (73) can be lowered to the first position or raised to the second position. When the top plate (73) is lowered to the first position, the buckle (74) pushes the clamping plate (22) to the unlocked position. When the top plate (73) is raised to the second position, the buckle (74) disengages from the clamping plate (22).

3. The small-part welding device according to claim 2, characterized in that, The fixture (2) also includes a push rod (23), the limiting hole (212) passes through both ends of the carrier plate (21) along the height direction, and the push rod (23) is movably inserted into the limiting hole (212); The auxiliary mechanism (7) further includes a second driving member (75), a base plate (76), and a top column (77). Along the height direction, the base plate (76) is located below the top plate (73), and the top column (77) is installed on the base plate (76). The second driving member (75) is disposed on the bracket (71) and drives the base plate (76) to move up and down along the height direction, so that the base plate (76) can be raised to the third position or lowered to the fourth position. When the base plate (76) is raised to the third position, the top column (77) extends into the limiting hole (212) and pushes the top rod (23) to rise, so as to push the small part out of the limiting hole (212). When the base plate (76) is lowered to the fourth position, the top column (77) disengages from the limiting hole (212).

4. The small-part welding device according to claim 1, characterized in that, The transfer channel (1) includes: A magnetic levitation track, wherein the magnetic levitation track is provided with a first loading station, a second loading station, a welding station and a unloading station; A moving slide (11) is provided, which carries the fixture (2) and is located on the magnetic levitation track.

5. The small parts welding device according to claim 4, characterized in that, The magnetic levitation track includes: Two main tracks (12) are provided, both of which extend along the length direction and are arranged parallel to each other along the width direction. One of the main tracks (12) is provided with the first loading station, and the other main track (12) is provided with the second loading station, the welding station and the unloading station in sequence along the length direction. Two conversion tracks (13) are respectively disposed at both ends of the main track (12) along the length direction, and each conversion track (13) slides along the width direction so that each conversion track (13) selectively connects to one end of the main track (12) along the length direction. The conversion drive is connected to the conversion track (13) for transmission.

6. The small parts welding device according to claim 5, characterized in that, The main track (12) is provided with a slide rail (14) in parallel, and the moving slide (11) is provided with a slider (111) in correspondence, and the slider (111) slides in cooperation with the slide rail (14).

7. The small parts welding device according to claim 5, characterized in that, The first loading station includes two sub-stations, one of which is a main track (12) with two sub-stations spaced apart along its length, and a buffer station is provided between the two sub-stations; The small part welding device also includes a vibrating feeder (8), which is used to transport the small part; each of the sub-stations is provided with the vibrating feeder (8) and the first feeding mechanism (3).

8. The small-part welding apparatus according to any one of claims 1-7, characterized in that, The small part welding device also includes a secondary positioning component (9), which is provided with a second contour groove (91) for accommodating the workpiece; the secondary positioning component (9) is provided at both the second loading station and the unloading station.

9. The small-part welding apparatus according to any one of claims 1-7, characterized in that, The small part welding device further includes a detection mechanism (10), which includes: The third driving member (101) has an output direction that is parallel to the length direction; The fourth driving member (102) is connected to the output end of the third driving member (101), and the output direction of the fourth driving member (102) is parallel to the width direction. The detection component (103) is connected to the output terminal of the fourth driving component (102).

10. An automatic loading and unloading welding equipment, characterized in that, The device includes an automatic feeding device (100), an automatic unloading device (200), and a small part welding device according to any one of claims 1-9. The automatic feeding device (100) is used to feed the workpiece to be welded into the small part welding device, and the automatic unloading device (200) is used to unload the workpiece after it has been welded by the small part welding device.

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