Continuous welding equipment for circular tube sealing pieces

Abstract

The invention belongs to the technical field of circular tube sealing piece welding, and particularly relates to circular tube sealing piece continuous welding equipment which comprises a rack, two transmission shafts are symmetrically and rotationally installed in the rack, two chain wheels are symmetrically installed on the transmission shafts, and the two chain wheels are engaged with two chains correspondingly. A plurality of sets of feeding frames used for conveying workpieces are arranged between the two sets of chains in a surrounding mode, a rotating mechanism is arranged on the machine frame, a fixing frame is erected on the rotating mechanism, an air cylinder is fixedly installed on the fixing frame, a lifting frame is arranged at the output end of the air cylinder, two sets of welding heads are symmetrically installed on the lifting frame, and two sets of pressing rollers are further symmetrically installed on the lifting frame. A chain wheel and chain transmission mechanism is adopted to drive the multiple sets of feeding frames to do circular motion, a circular conveying system is formed, welding operation and feeding and discharging operation can be conducted in parallel, shutdown waiting is not needed, and the machining efficiency is remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of circular tube sealing plate welding technology, specifically a continuous welding device for circular tube sealing plates. Background Technology

[0002] As a basic profile in mechanical equipment, automotive parts, aerospace devices, and building structures, the end sealing treatment of round tubes is a key step in the manufacturing process. In actual processing, the sealing plate is usually precisely positioned and welded to one end of the round tube to form a closed or semi-closed cavity structure. Then, subsequent precision machining such as turning, drilling, and milling is carried out. This process sequence can effectively ensure the cleanliness of the inner cavity, structural strength, and dimensional stability of the tube, and avoid the impact of subsequent welding heat on the precision of the machined surface.

[0003] Patent CN219444066U discloses a positioning mechanism fixed on one side, including a rolling tube mechanism and a positioning mechanism. The rolling tube mechanism includes two rotating rollers, a rotating shaft one, a positioning plate, a synchronous wheel, a transmission belt, and a synchronous motor. The positioning mechanism includes a base plate, a servo motor, a rotating shaft two, a worm gear, a lead screw, a worm wheel, a bidirectional screw, a support plate, and other structures. This solution drives the lead screw at its top to rotate synchronously through the rotating shaft two, causing the lead screw to drive the threaded plate and the lifting plate to descend in coordination. The four pressure rollers evenly distributed at the bottom of the lifting plate apply multi-point compression and limiting to the round tube, ensuring that the tube remains in a stable clamping state during the welding process. At the same time, the welding head performs rolling automatic welding along the contact position between the sealing plate and the round tube, achieving continuous and uniform weld formation.

[0004] In the above-mentioned scheme, when welding the round tube and the sealing plate, the workpiece needs to be fixed on two sets of rotating rollers for positioning and rotation welding. However, after the welding of a single piece is completed, the machine needs to be stopped to remove the workpiece from the rotating rollers and then re-clamp the next workpiece. This picking and placing process causes the device to be frequently stopped, consuming a lot of auxiliary time, which seriously restricts the welding efficiency of the round tube and the sealing plate and makes it difficult to meet the needs of continuous production. Therefore, the present invention provides a continuous welding equipment for round tube sealing plates. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a continuous welding equipment for round tube sealing plates, including a frame, two sets of transmission shafts symmetrically and rotatably installed inside the frame, two sets of sprockets symmetrically installed on the transmission shafts, the two sets of sprockets respectively meshing with two sets of chains, and several sets of feeding racks for conveying workpieces arranged around the two sets of chains. A rotating mechanism is provided on the frame, a fixed frame is mounted on the rotating mechanism, a cylinder is fixedly installed on the fixed frame, a lifting frame is provided at the output end of the cylinder, two sets of welding heads are symmetrically installed on the lifting frame, and two sets of pressure rollers are also symmetrically installed on the lifting frame. The rotating mechanism includes two sets of horizontal shafts, with connecting frames rotatably installed at both ends of the horizontal shafts, the connecting frames being fixedly installed on the frame, a driven shaft fixedly installed on the horizontal shaft, two sets of support shafts symmetrically arranged at both ends of the driven shaft, one end of the two sets of support shafts being fixedly connected to the two sets of connecting frames, a first pulley is provided at one end of one set of horizontal shafts, one end of a synchronous belt is wrapped around the first pulley, and the other end of the synchronous belt is wrapped around the second pulley. The sprocket and chain drive mechanism drives multiple sets of feeding racks to make circular motion, forming a circulating conveying system. This allows welding operations and loading / unloading operations to be carried out in parallel without stopping the machine, significantly improving processing efficiency.

[0007] Preferably, the feeding rack includes a frame, two sets of chains fixedly connected to both sides of the frame, a movable frame movably installed inside the frame, a pressure rod fixedly connected to the lower end of the movable frame, rollers rotatably installed on the pressure rod, two sets of movable blocks symmetrically movably installed on both sides of the movable frame, support rods installed on the movable blocks, a rotating disk rotatably installed at the upper end of the support rods, a rubber pad fixedly installed on the rotating disk, and a spring set on the movable frame. Two sets of first sliding grooves are symmetrically opened on the movable frame, the first sliding grooves are slidably connected to the first slide rails, and the first slide rails are fixedly installed inside the frame. Two sets of second sliding grooves are symmetrically opened on the movable blocks, the second sliding grooves are slidably connected to the second slide rails, and the second slide rails are fixedly installed inside the frame. Two sets of inclined grooves are also symmetrically opened on the movable frame. A pin is provided at one end of the movable block, the pin is located in the inclined groove, and a guide plate is provided between the two sets of transmission shafts. Rollers are rotatably connected to the outer ring of the guide plate, and the transmission shafts are rotatably connected to the guide plate. The outer ring of the guide plate is composed of a first arc surface, a straight surface, and an inclined surface. Continue to drive several sets of feeding racks to make circular motion. The rollers will roll from the straight surface to the first arc surface. Under the action of the spring rebound force, the rubber pad will release the pressure on the end of the workpiece. During the welding process of the workpiece, since the design length of the driven shaft is less than the length of the workpiece, the weld seam of the workpiece cannot come into contact with the driven shaft, thereby avoiding contact interference between the welding surface and the driven shaft, improving the processing yield of the workpiece and the quality of the finished product.

[0008] Preferably, the feeding rack also includes two sets of receiving rods, each set of receiving rods being inserted into two sets of support rods. One end of each set of receiving rods is fixedly connected to a receiving plate. Two sets of convex shafts are symmetrically installed on both sides of the receiving plate. A first guide hole is provided on the movable block, and the support rod is slidably connected to the first guide hole. A second guide hole is provided on the receiving plate, and the support rod is slidably connected to the second guide hole. Side plates are symmetrically arranged on both sides of the guide plate, and guide grooves are provided on the side plates. The end of the convex shaft is located in the guide groove. The guide groove consists of a set of arc grooves, a set of straight grooves, and two sets of inclined grooves. As the workpiece continues to move in a circular motion with the feeder, it will not come into contact with the support shaft, thus avoiding sliding friction that could cause wear and scratches on the welding surface and improving the workpiece processing quality.

[0009] The beneficial effects of this invention are as follows: 1. The sprocket and chain drive mechanism drives multiple sets of feeding racks to make circular motion, forming a circulating conveying system, which allows welding operations and loading and unloading operations to be carried out in parallel without stopping the machine, thus significantly improving processing efficiency.

[0010] 2. After the workpiece is welded, several sets of feeding racks continue to move in a circular motion. The rollers will roll from the straight surface to the first arc surface. Under the action of the spring rebound force, the rubber pad will release the pressure on the end of the workpiece. During the workpiece welding process, since the length of the driven shaft is less than the length of the workpiece, the weld seam of the workpiece cannot come into contact with the driven shaft, thereby avoiding contact interference between the welding surface and the driven shaft, improving the processing yield of the workpiece and the quality of the finished product.

[0011] 3. When the workpiece is welded, the cam shaft on the feeder is located at the intersection of the arc groove and a set of inclined grooves, and the workpiece is clamped between two sets of support rods. As the workpiece continues to move in a circular motion with the feeder, the cam shaft will slide along a set of inclined grooves towards the straight groove. Guided by the set of inclined grooves, the cam shaft drives the receiving plate and two sets of receiving rods to move upward. The two sets of receiving rods drive the two sets of support rods and the workpiece to move upward until the cam shaft slides into the straight groove. The workpiece will then detach from the support shaft. When the cam shaft slides into the next set of inclined grooves, guided by the next set of inclined grooves, the workpiece will fall onto the two sets of support shafts. At this time, the workpiece stops moving, and the operator unloads the workpiece. Therefore, during the workpiece's continued circular motion with the feeder, the workpiece will not come into contact with the support shaft, thus avoiding sliding friction that causes wear and scratches on the welding surface and improving the workpiece processing quality. Attached Figure Description

[0012] The invention will now be further described with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2This is a schematic diagram of the feeding rack, workpiece, rotating mechanism, cross-sectional view of the fixing frame, cylinder, lifting frame, welding head, and pressure roller assembly of the present invention.

[0015] Figure 3 This is a schematic diagram of the combination of the horizontal axis, driven axis, and support axis of the present invention.

[0016] Figure 4 This is a schematic diagram of the chain, cross-sectional view of the feeding rack, and workpiece assembly of the present invention.

[0017] Figure 5 This is a cross-sectional view of the frame, movable frame, and movable block assembly of the present invention.

[0018] Figure 6 This is a cross-sectional view of the assembly of the frame, drive shaft, chain, feeding rack, and rotating mechanism of the present invention.

[0019] Figure 7 This is a schematic diagram of the combination of the feeder, workpiece, horizontal shaft, driven shaft, and support shaft of the present invention.

[0020] Figure 8 This is a cross-sectional schematic diagram of the feeding rack of the present invention.

[0021] Figure 9 This is a schematic diagram of the assembly of the drive shaft, feeder, workpiece, and welding head of the present invention.

[0022] In the diagram: 1. Frame; 2. Drive shaft; 201. Guide plate; 2011. First arc-shaped surface; 2012. Straight surface; 2013. Inclined surface; 202. Side plate; 203. Guide groove; 2031. Arc-shaped groove; 2032. Straight groove; 2033. Inclined groove; 3. Sprocket; 4. Chain; 5. Feeding rack; 501. Frame body; 502. Movable frame; 5021. First slide groove; 5022. First slide rail; 5023. Inclined groove; 503. Pressure bar; 504. Roller; 505. Movable block; 5051. Second slide groove; 5052 5053, Pin; 5054, First Guide Hole; 506, Support Rod; 507, Rotary Disk; 508, Rubber Pad; 509, Spring; 510, Support Rod; 511, Support Plate; 5111, Second Guide Hole; 512, Convex Shaft; 6, Workpiece; 7, Rotating Mechanism; 701, Horizontal Shaft; 702, Driven Shaft; 703, Support Shaft; 704, Connecting Frame; 705, First Pulley; 706, Synchronous Belt; 707, Second Pulley; 8, Fixed Frame; 9, Cylinder; 10, Lifting Frame; 11, Welding Head; 12, Pressure Roller. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] Example 1: As Figures 1 to 3 As shown in the embodiment of the present invention, a continuous welding device for round tube sealing sheets includes a frame 1. Two sets of drive shafts 2 are symmetrically rotatably mounted within the frame 1. Two sets of sprockets 3 are symmetrically mounted on the drive shafts 2. The two sets of sprockets 3 respectively mesh with two sets of chains 4. Several sets of feeding racks 5 for conveying workpieces 6 are arranged around the two sets of chains 4. A rotating mechanism 7 is provided on the frame 1. A fixed frame 8 is mounted on the rotating mechanism 7. A cylinder 9 is fixedly mounted on the fixed frame 8. A lifting frame 10 is provided at the output end of the cylinder 9. Two sets of welding heads 11 are symmetrically mounted on the lifting frame 10. Furthermore, the lifting frame 10 also... Two sets of pressure rollers 12 are symmetrically installed. The rotating mechanism 7 includes two sets of horizontal shafts 701. Connecting frames 704 are rotatably installed at both ends of the horizontal shafts 701. The connecting frames 704 are fixedly installed on the frame 1. A driven shaft 702 is fixedly installed on the horizontal shafts 701. Two sets of support shafts 703 are symmetrically arranged at both ends of the driven shafts 702. One end of the two sets of support shafts 703 is fixedly connected to the two sets of connecting frames 704 respectively. A first pulley 705 is provided at one end of one set of horizontal shafts 701. One end of the synchronous belt 706 is wrapped around the first pulley 705, and the other end of the synchronous belt 706 is wrapped around the second pulley 707.

[0025] Specifically, attached Figure 1The middle arrow indicates the loading point. Initially, a set of feeding racks 5 are located at the loading point. The workpiece 6 consists of a set of round tubes and two sets of sealing plates. When welding is required on the workpiece 6, it is placed into the feeding rack 5 located at the loading point, and the workpiece 6 is positioned on two sets of support shafts 703. Then, a set of transmission shafts 2 is driven by a motor to rotate. This transmission shaft 2 drives two sets of sprockets 3 to rotate, and the two sets of sprockets 3 drive two sets of chains 4, along with several sets of feeding racks 5, to perform a circular motion from the loading point towards the solid. The fixed frame 8 moves in a circular motion, causing the corresponding feeding frame 5 to slide the workpiece 6 along the two sets of support shafts 703 until the workpiece 6 moves directly below the lifting frame 10 and is positioned on the two sets of driven shafts 702. The circular motion then pauses. Next, the cylinder 9 drives the lifting frame 10, along with the two sets of welding heads 11 and the two sets of pressure rollers 12, to move downwards. This causes the pressure rollers 12 to press down on the circular tube on the workpiece 6, while the lower end of the welding head 11 approaches the weld seam of the workpiece 6. At this point, the motor drives the second pulley 7... 07 rotates, and the second pulley 707 drives the first pulley 705 to rotate via the synchronous belt 706. The first pulley 705 drives a set of horizontal shafts 701 and driven shafts 702 to rotate. The driven shafts 702 drive the workpiece 6 to rotate. At the same time, the welding head 11 welds the weld seam of the workpiece 6. During the welding process, the workpiece 6 to be welded is placed into the feeding rack 5 located at the loading point. After the welding is completed, the cylinder 9 is retracted, and several sets of feeding racks 5 continue to be driven to make circular motion, so that the next set of workpieces 6 moves directly below the lifting frame 10. During the welding of the next set of workpieces 6, the welded workpiece 6 is removed from the corresponding feeding rack 5, and the workpiece 6 to be welded is placed into the feeding rack 5 located at the loading point. The above operation is repeated. Compared with the prior art, the use of the sprocket 3 and chain 4 transmission mechanism to drive multiple sets of feeding racks 5 to make circular motion forms a circular conveying system, which allows the welding operation and loading and unloading operation to be carried out in parallel without stopping and waiting, significantly improving the processing efficiency.

[0026] like Figures 4 to 7As shown, the feeding rack 5 includes a frame 501, with two sets of chains 4 fixedly connected to both sides of the frame 501, a movable frame 502 movably installed inside the frame 501, a pressure rod 503 fixedly connected to the lower end of the movable frame 502, rollers 504 rotatably installed on the pressure rod 503, two sets of movable blocks 505 symmetrically movably installed on both sides of the movable frame 502, support rods 506 installed on the movable blocks 505, a rotating disk 507 rotatably installed at the upper end of the support rods 506, rubber pads 508 fixedly installed on the rotating disk 507, and springs 509 set on the movable frame 502. Two sets of first sliding grooves 5021 are symmetrically opened on the movable frame 502, and the first sliding grooves 5021 are slidably connected to first slide rails 5. 022, the first slide rail 5022 is fixedly installed inside the frame 501. Two sets of second slide grooves 5051 are symmetrically opened on the movable block 505. The second slide grooves 5051 are slidably connected to the second slide rail 5052. The second slide rail 5052 is fixedly installed inside the frame 501. Two sets of inclined grooves 5023 are also symmetrically opened on the movable frame 502. A pin 5053 is provided at one end of the movable block 505. The pin 5053 is located in the inclined groove 5023. A guide plate 201 is provided between the two sets of transmission shafts 2. The roller 504 is rotatably connected to the outer ring of the guide plate 201. The transmission shaft 2 is rotatably connected to the guide plate 201. The outer ring of the guide plate 201 is composed of a first arc surface 2011, a straight surface 2012, and an inclined surface 2013.

[0027] Specifically, when welding the weld seam of workpiece 6, after the weld seam cools and forms, it is usually higher than the splicing surface formed by the end of the round tube and the sealing plate, forming a local protrusion. As workpiece 6 rotates, this welding surface will contact and interfere with the driven shaft 702, causing the welding surface to bear a large compressive stress, which in turn causes surface wear or even cracking defects, seriously reducing the processing yield and finished product quality of workpiece 6. The driven shaft 702 is designed to be shorter than the workpiece 6. Therefore, when the workpiece 6 moves from the loading point to directly below the lifting frame 10, the roller 504 on the feeding frame 5 will first roll along the first arc surface 2011 towards the inclined surface 2013. The roller 504 will be squeezed by the inclined surface 2013, causing the roller 504 to drive the bearing rod 503 and the movable frame 502 to move upward. The movable frame 502 compresses the spring 509. At the same time, the two sets of inclined grooves 5023 move upward with the movable frame 502. The two sets of pins 5053 slide along the two sets of inclined grooves 5023 respectively. Under the guidance of the two sets of inclined grooves 5023, the two sets of pins 5053 drive the two sets of movable blocks 505 to move towards each other. The two sets of movable blocks 505 drive the two sets of support rods 506, the two sets of rotating disks 507, and the two sets of rubber pads 508 to move towards each other. The rubber pad 508 presses against both ends of the workpiece 6, causing the rubber pad 508 to deform until the roller 504 rolls onto the straight surface 2012, thus fixing the two sets of sealing plates to both ends of the round tube. During the welding process of the workpiece 6, the rotating workpiece 6 drives the rubber pad 508 to rotate together with the rotating disk 507. After the workpiece 6 is welded, it continues to drive several sets of feeding racks 5 to make circular motion. The roller 504 will roll from the straight surface 2012 to the first arc surface 2011. Under the rebound force of the spring 509, the pressure of the rubber pad 508 on the end of the workpiece 6 is released. During the welding process of the workpiece 6, since the designed length of the driven shaft 702 is less than the length of the workpiece 6, the weld of the workpiece 6 cannot come into contact with the driven shaft 702, thereby avoiding contact interference between the welding surface and the driven shaft 702, improving the processing yield and finished product quality of the workpiece 6.

[0028] Example 2: Figure 8 and Figure 9 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the feeding rack 5 further includes two sets of receiving rods 510, the two sets of receiving rods 510 are respectively inserted into two sets of support rods 506, one end of each set of receiving rods 510 is fixedly connected to the receiving plate 511, two sets of convex shafts 512 are symmetrically installed on both sides of the receiving plate 511, a first guide hole 5054 is opened on the movable block 505, the support rod 506 is slidably connected to the first guide hole 5054, a second guide hole 5111 is opened on the receiving plate 511, the support rod 506 is slidably connected to the second guide hole 5111, side plates 202 are symmetrically arranged on both sides of the guide plate 201, a guide groove 203 is opened on the side plate 202, the end of the convex shaft 512 is located in the guide groove 203, and the guide groove 203 is composed of a set of arc grooves 2031, a set of straight grooves 2032, and two sets of inclined grooves 2033.

[0029] Specifically, after the workpiece 6 is welded, the workpiece 6 will continue to move in a circular motion with the feeder 5. The workpiece 6 will slide along the two sets of support shafts 703. Since the welding surface on the workpiece 6 is higher than the splicing surface, the welding surface will bear all the pressure from the support shafts 703, which will cause the pressure to be relatively concentrated, resulting in wear and scratches on the welding surface and reducing the processing quality of the workpiece 6. Therefore, when the workpiece 6 is welded, the convex shaft 512 on the feeder 5 is located at the intersection of the arc groove 2031 and a set of inclined grooves 2033, and the workpiece 6 is clamped between the two sets of support rods 506. As the workpiece 6 continues to move in a circular motion with the feeder 5, the convex shaft 512 will slide along the set of inclined grooves 2033 towards the straight groove 2032. Guided by the set of inclined grooves 2033, the convex shaft 512 drives the receiving plate 511 and the two sets of receiving rods 510 to move upward. The two sets of receiving rods 510 drive the two sets of support rods 506 and the workpiece 6 to move upward. Until the cam shaft 512 slides into the straight groove 2032, the workpiece 6 will disengage from the support shaft 703. When the cam shaft 512 slides into the next set of inclined grooves 2033, the workpiece 6 will fall onto the two sets of support shafts 703 under the guidance of the next set of inclined grooves 2033. At this time, the workpiece 6 stops moving, and the worker unloads the workpiece 6. Therefore, as the workpiece 6 continues to make circular motion with the feeder 5, the workpiece 6 will not come into contact with the support shaft 703, thereby avoiding sliding friction that causes wear and scratches on the welding surface and improving the processing quality of the workpiece 6.

[0030] Working principle: The workpiece 6 is placed into the feeding rack 5 located at the loading point, and the workpiece 6 is located on two sets of support shafts 703. Then, a set of transmission shafts 2 is driven by a motor to rotate. The transmission shaft 2 drives two sets of sprockets 3 to rotate. The two sets of sprockets 3 drive two sets of chains 4 and several sets of feeding racks 5 to make circular motion. The direction of circular motion is from the loading point to the fixed frame 8. The corresponding feeding rack 5 drives the workpiece 6 to slide along the two sets of support shafts 703 until the workpiece 6 moves directly below the lifting frame 10 and is located on two sets of driven shafts 702. The circular motion stops. Then, the lifting frame 10, together with two sets of welding heads 11 and two sets of pressure rollers 12, is driven downward by the cylinder 9. The pressure rollers 12 press down on the round tube on the workpiece 6, and at the same time, the lower end of the welding head 11 is close to the weld seam of the workpiece 6. The second pulley 707 is driven by a motor to rotate. The second pulley 707 drives the first pulley 705 to rotate via a synchronous belt 706. The first pulley 705 drives a set of horizontal shafts 701 and driven shafts 702 to rotate. The driven shafts 702 drive the workpiece 6 to rotate. At the same time, the welding head 11 welds the weld seam of the workpiece 6. During the welding process, the workpiece 6 to be welded is placed into the feeding rack 5 located at the loading point. After the welding is completed, the cylinder 9 is withdrawn and several sets of feeding racks 5 are driven to perform circular motion so that the next set of workpieces 6 moves directly below the lifting frame 10. During the welding of the next set of workpieces 6, the welded workpiece 6 is removed from the corresponding feeding rack 5, and the workpiece 6 to be welded is placed into the feeding rack 5 located at the loading point. The above operation is repeated in a cycle. As workpiece 6 moves from the loading point directly below the lifting frame 10, the roller 504 on the feeding frame 5 first rolls along the first arc surface 2011 towards the inclined surface 2013. The roller 504 is then compressed by the inclined surface 2013, causing it to drive the pressure rod 503 and the movable frame 502 upwards. The movable frame 502 compresses the spring 509. Simultaneously, the two sets of inclined grooves 5023 move upwards with the movable frame 502, and the two sets of pins 5053 slide along the two sets of inclined grooves 5023 respectively. Guided by the two sets of inclined grooves 5023, the two sets of pins 5053 drive the two sets of movable blocks 505 to move towards each other. The two sets of movable blocks 505 then... Two sets of support rods 506, two sets of rotating disks 507, and two sets of rubber pads 508 move towards each other, causing the two sets of rubber pads 508 to press the two ends of the workpiece 6, resulting in deformation of the rubber pads 508 until the rollers 504 roll onto the straight surface 2012, thus fixing the two sets of sealing plates to the two ends of the round tube. During the welding process of the workpiece 6, the rotating workpiece 6 drives the rubber pads 508 to rotate together with the rotating disks 507. After the welding of the workpiece 6 is completed, several sets of feeding racks 5 continue to be driven to make circular motion. The rollers 504 will roll from the straight surface 2012 to the first arc surface 2011. Under the action of the spring 509 rebound force, the pressure of the rubber pads 508 on the ends of the workpiece 6 is released. As the workpiece 6 continues its circular motion with the feeder 5, the cam shaft 512 will slide along a set of inclined grooves 2033 toward the straight groove 2032. Guided by the set of inclined grooves 2033, the cam shaft 512 drives the receiving plate 511 and the two sets of receiving rods 510 to move upward. The two sets of receiving rods 510 drive the two sets of support rods 506 and the workpiece 6 to move upward until the cam shaft 512 slides into the straight groove 2032. The workpiece 6 will then detach from the support shaft 703. When the cam shaft 512 slides into the next set of inclined grooves 2033, guided by the next set of inclined grooves 2033, the workpiece 6 will fall onto the two sets of support shafts 703. At this time, the workpiece 6 stops moving, and the worker unloads the workpiece 6.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the 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 continuous welding device for circular tube sealing plates, comprising a frame (1), characterized in that: Two sets of drive shafts (2) are symmetrically rotated inside the frame (1). Two sets of sprockets (3) are symmetrically mounted on the drive shafts (2). The two sets of sprockets (3) mesh with two sets of chains (4) respectively. Several sets of feeding racks (5) for conveying workpieces (6) are arranged around the two sets of chains (4). A rotating mechanism (7) is provided on the frame (1). A fixed frame (8) is mounted on the rotating mechanism (7). A cylinder (9) is fixedly mounted on the fixed frame (8). A lifting frame (10) is provided at the output end of the cylinder (9). Two sets of welding heads (11) are symmetrically mounted on the lifting frame (10). Two sets of pressure rollers (12) are also symmetrically mounted on the lifting frame (10). The rotating mechanism (7) includes two sets of horizontal shafts (701), and each end of the horizontal shaft (701) is rotatably mounted with a connecting frame (704), which is fixedly mounted on the frame (1). A driven shaft (702) is fixedly installed on the horizontal shaft (701); Two sets of support shafts (703) are symmetrically arranged at both ends of the driven shaft (702), and one end of each set of support shafts (703) is fixedly connected to one set of connecting frames (704). A first pulley (705) is provided at one end of the set of horizontal shafts (701); A timing belt (706) has one end wrapped around the first pulley (705) and the other end wrapped around the second pulley (707).

2. The continuous welding equipment for circular tube sealing plates according to claim 1, characterized in that: The feeding rack (5) includes a frame (501), and two sets of chains (4) are fixedly connected to both sides of the frame (501). A movable frame (502) is installed within the frame (501); The pressure rod (503) is fixedly connected to the lower end of the movable frame (502); Rotate the roller (504) mounted on the bearing rod (503); Two sets of movable blocks (505) are symmetrically and movablely installed on both sides of the movable frame (502); A support rod (506) is installed on the movable block (505); Rotate the rotating disk (507) installed at the upper end of the support rod (506); A rubber pad (508) is fixedly installed on the rotating disk (507); Spring (509) is provided on the movable frame (502).

3. The continuous welding equipment for circular tube sealing plates according to claim 2, characterized in that: The movable frame (502) is symmetrically provided with two sets of first slide grooves (5021), the first slide grooves (5021) are slidably connected to the first slide rails (5022), and the first slide rails (5022) are fixedly installed in the frame (501).

4. The continuous welding equipment for circular tube sealing plates according to claim 3, characterized in that: Two sets of second slide grooves (5051) are symmetrically provided on the movable block (505). The second slide grooves (5051) are slidably connected to the second slide rails (5052), and the second slide rails (5052) are fixedly installed in the frame (501).

5. The continuous welding equipment for circular tube sealing plates according to claim 4, characterized in that: The movable frame (502) is also symmetrically provided with two sets of inclined grooves (5023), and a pin (5053) is provided at one end of the movable block (505), and the pin (5053) is located in the inclined groove (5023).

6. The continuous welding equipment for circular tube sealing plates according to claim 5, characterized in that: A guide plate (201) is provided between the two sets of drive shafts (2), and the roller (504) is tactilely connected to the outer ring of the guide plate (201).

7. The continuous welding equipment for circular tube sealing plates according to claim 6, characterized in that: The drive shaft (2) is rotatably connected to the guide plate (201), and the outer ring of the guide plate (201) is composed of a first arc surface (2011), a straight surface (2012), and an inclined surface (2013).

8. The continuous welding equipment for circular tube sealing plates according to claim 7, characterized in that: The feeding rack (5) also includes two sets of receiving rods (510), and the two sets of receiving rods (510) are respectively inserted into the two sets of support rods (506). The receiving plate (511) and one end of each of the two sets of receiving rods (510) are fixedly connected to the receiving plate (511). Two sets of convex shafts (512) are symmetrically installed on both sides of the receiving plate (511).

9. A continuous welding device for circular tube sealing plates according to claim 8, characterized in that: The movable block (505) has a first guide hole (5054), the support rod (506) is slidably connected to the first guide hole (5054), the receiving plate (511) has a second guide hole (5111), and the support rod (506) is slidably connected to the second guide hole (5111).

10. A continuous welding device for circular tube sealing plates according to claim 9, characterized in that: The guide plate (201) has side plates (202) symmetrically arranged on both sides. The side plates (202) have guide grooves (203) opened on them. The end of the convex shaft (512) is located in the guide groove (203). The guide groove (203) is composed of a set of arc grooves (2031), a set of straight grooves (2032), and two sets of inclined grooves (2033).

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