A welding device for recycling steel coil strapping

Abstract

This invention discloses a welding device for recycling steel coil strapping, comprising front and rear conveying mechanisms on a frame, corresponding front and rear clamping and feeding assemblies, a shearing assembly, and a welding assembly. The front clamping and feeding assembly is located on the output side of the front conveying mechanism, used to clamp the rear end of the front strapping and cooperate with the shearing assembly to cut it off, then push it to the rear strapping. The rear clamping and feeding assembly is located on the input side of the rear conveying mechanism, used to clamp the front end of the rear strapping and cooperate with the shearing assembly to cut it off, then push it to the front strapping. The welding assembly is located between the front and rear conveying mechanisms, used to perform welding after the cut ends of the front and rear strapping are joined together. This invention, through integrated design, precisely cuts the strapping ends before welding, ensuring a flat and matched mating end face, thereby significantly improving the strength and reliability of the welded joint, and effectively solving the problem of insufficient weld strength caused by uneven end faces in traditional direct butt welding.

Description

Technical Field

[0001] This utility model relates to the field of steel coil strapping recycling technology, and in particular to a welding device for steel coil strapping recycling. Background Technology

[0002] In the steel production process, incoming steel coils at the inlet of cold-rolled, silicon steel, and stainless steel mills are typically secured with steel strapping, especially for high-strength steel or thick steel plates, where multiple straps are often applied to enhance binding stability. Before the steel coils are transported to the uncoiler, these straps must be removed, and the long, waste strapping sections are recycled. To achieve efficient resource recycling, the waste strapping generally undergoes pretreatment—removing any buckles that affect strength (i.e., the welded parts of the original strapping), then welding them together to form a continuous strip, and finally rewinding it into a neat coil for easy transportation and storage.

[0003] Currently, the traditional method of strap welding mainly involves directly welding the rear end of the front strap to the front end of the rear strap. However, this method has obvious shortcomings: if the welding end faces of the front and rear straps do not match and cannot fit together completely, gaps will be generated at the joint, resulting in a decrease in weld strength and weld firmness, which in turn affects the safety of subsequent processing and use.

[0004] Therefore, in order to address the problem of insufficient weld strength of the strapping in the existing technology, it is urgent to develop a new type of strapping welding device to improve the quality of the welded joint and the reliability of the operation. Utility Model Content

[0005] This utility model proposes a welding device for recycling steel coil strapping, which solves the problems of insufficient weld strength and safety hazards caused by direct butt welding of front and rear strapping in the prior art.

[0006] The technical solution of this utility model is implemented as follows: This utility model provides a welding device for recycling steel coil strapping, including a front conveying mechanism, a rear conveying mechanism, a front clamping and feeding assembly, a rear clamping and feeding assembly, a shearing assembly, and a welding assembly installed on a frame; The front clamping and feeding assembly is located on the output side of the front conveying mechanism. It is used to clamp the strap when the rear end of the front strap conveyed by the front conveying mechanism reaches the cutting station, and to cooperate with the cutting assembly to cut off the rear end of the front strap. After the cutting is completed, the clamped rear end of the front strap moves toward the front end of the rear strap. The rear clamping and feeding assembly is located on the input side of the rear conveying mechanism. It is used to clamp the strap when the front end of the rear strap conveyed by the rear conveying mechanism reaches the cutting station, and to cooperate with the cutting assembly to cut off the front end of the rear strap. After cutting off the front end of the clamped rear strap, it moves toward the rear end of the front strap. The welding assembly is located between the front conveying mechanism and the rear conveying mechanism, and is used to perform welding after the end faces of the front and rear straps at the cut-off ends are joined.

[0007] Specifically, both the front conveying mechanism and the rear conveying mechanism include a support belt arranged along the conveying direction for supporting the strapping; a pressure roller is provided above the support belt, and a power roller is provided below the pressure roller; the support belt has an opening for exposing the top of the power roller, and the top surface of the power roller is higher than the top surface of the support belt; a first driving component is installed on the frame for driving the power roller to rotate, thereby cooperating with the pressure roller to drive the strapping to move along its length direction through friction, and keeping the strapping taut during the conveying process.

[0008] Furthermore, a second drive component is installed on the frame, and a support plate is connected to the end of the telescopic rod of the second drive component. The roller shaft of the pressure roller is mounted on the support plate through a bearing. An avoidance groove is provided on the frame to allow the roller shaft of the pressure roller to move up and down. The second drive component is used to drive the pressure roller to lift and lower, and cooperate with the power roller to press or release the strapping.

[0009] Furthermore, a third drive component is fixedly installed on one side of the frame, and a push block is connected to the end of the telescopic rod of the third drive component. The push block is located on the top surface of the strapping. A vertical guide roller is installed on the side wall of the frame opposite to the push block through a bearing. The third drive component is used to drive the push block to extend and retract along the width direction of the strapping, and cooperate with the guide roller to perform lateral positioning of the strapping.

[0010] Specifically, both the front clamping and feeding assembly and the rear clamping and feeding assembly include a first bracket. The top of the first bracket is provided with a fourth driving component. The end of the telescopic rod at the bottom of the fourth driving component is connected to an upper clamping block. A lower clamping block is fixedly installed below the upper clamping block, and the top surface of the lower clamping block is flush with the bottom surface of the strapping. The fourth driving component is used to drive the upper clamping block to rise and fall, and cooperate with the lower clamping block to clamp or release the strapping. A first horizontal moving module is installed on the frame. The first bracket is slidably installed on the first horizontal moving module. The first horizontal moving module is used to drive the first bracket to move along the length direction of the strapping.

[0011] Specifically, the frame is equipped with two position sensors, which are used to detect the position of the rear end of the front strap and the position of the front end of the rear strap, respectively. The two position sensors are respectively connected to the corresponding front clamping and feeding assembly and the rear clamping and feeding assembly to realize linkage control.

[0012] Specifically, a second horizontal moving module is installed on the frame, and the shearing assembly is slidably mounted on the second horizontal moving module via a second bracket. The second horizontal moving module is used to drive the shearing assembly to move along the width direction of the strapping, so that the shearing assembly switches between the shearing station and the avoidance station.

[0013] Furthermore, the cutting assembly is provided in two sets, which are used to cut off the rear end of the front strap and the front end of the rear strap, respectively; each set of cutting assemblies includes a lower cutter and an upper cutter, the lower cutter is fixedly mounted on the second bracket, and the top surface of the lower cutter is flush with the bottom surface of the strap; a fifth driving component is mounted on the second bracket, and the end of the telescopic rod at the bottom of the fifth driving component is connected to the upper cutter. The fifth driving component is used to drive the upper cutter to rise and fall, and cooperate with the lower cutter to cut off the end of the strap.

[0014] Furthermore, a pad is installed on the second bracket. The pad is located on the side of the lower cutter near the strapping, and the top surface of the pad is higher than the top surface of the lower cutter. The top surface of the pad away from the lower cutter is a slope, and the outer edge of the slope is lower than the bottom surface of the strapping. During the process of the shearing assembly moving laterally into the shearing station, the slope is used to support and guide the end of the strapping that is drooping due to gravity, so that it can smoothly transition to the lower cutter.

[0015] Furthermore, two support rollers are mounted on the second bracket via bearings, respectively for supporting the ends of the front and rear straps; the top surface of the support rollers is flush with the bottom surface of the straps, and the axial direction of the support rollers is parallel to the length direction of the straps; the pad is located between the support rollers and the lower cutter; during the process of the shearing assembly moving laterally into the shearing station, the support rollers first contact and support the drooping strap ends, and the strap ends then transition to the lower cutter via the pad; the welding assembly is mounted on the second bracket and located above the support rollers or the pad.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) This utility model realizes the pre-treatment of the end faces of the front and rear straps and automatic butt welding by integrating conveying, clamping, shearing and welding functions. Before welding, the device precisely cuts off the end of the strap to ensure that the butt end faces are flat and matched, thereby significantly improving the firmness and reliability of the welded joint and effectively solving the problem of insufficient weld strength caused by uneven end faces in traditional direct butt welding; (2) This utility model uses the combination of pressure roller and power roller to form friction drive, so that the strapping always maintains a certain tension and is in a straight and taut state during the conveying process, which effectively prevents the deviation or slippage during the conveying process and ensures the conveying accuracy. (3) By setting a push block that can be extended laterally and a fixed guide roller, this utility model can actively position and limit the strap width, further constrain the position of the strap during the conveying and processing process, prevent lateral movement, and ensure the positional accuracy of subsequent cutting and welding processes. (4) By setting a pad with a sloping surface on the side of the lower cutter near the strap, the sloping surface can effectively lift and guide the strap end that is drooping due to gravity when the cutting assembly moves laterally, so that it can smoothly transition to the cutter position, avoiding collision between the cutter and the drooping strap, protecting the equipment and ensuring the accuracy of the cutting position. (5) This utility model adds a support roller and forms a multi-stage guiding transition mechanism in cooperation with the pad block. During the lateral movement of the shearing component, the support roller first supports the drooping end of the strapping, and then the cutter is smoothly guided down by the inclined surface of the pad block to complete the cutting. During welding, the support roller also assists in supporting and guiding, ensuring the accurate and stable position of the front and rear strapping ends during the docking process, thereby further improving the welding quality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front structural schematic diagram of a welding device for recycling steel coil strapping according to the present invention.

[0019] Figure 2 This is a schematic diagram of the back structure of a welding device for recycling steel coil strapping according to the present invention.

[0020] Figure 3 This is a schematic diagram of the installation structure of the conveying mechanism in an embodiment of this utility model.

[0021] Figure 4 This is a schematic diagram of the installation structure of the lateral positioning mechanism in an embodiment of this utility model.

[0022] Figure 5 This is a schematic diagram of the installation structure of the clamping and feeding assembly in an embodiment of this utility model.

[0023] Figure 6 This is a schematic diagram of the installation structure of the shearing component and the welding component in an embodiment of this utility model.

[0024] Figure 7 This is a side view of the shearing component in an embodiment of this utility model.

[0025] In the diagram: 1. Frame; 2. Front conveyor mechanism; 3. Rear conveyor mechanism; 4. Front clamping and feeding assembly; 5. Rear clamping and feeding assembly; 6. Shearing assembly; 7. Welding assembly; 8. Support belt; 9. Pressure roller; 10. Power roller; 11. First drive component; 12. Second drive component; 13. Support plate; 14. Clearance groove; 15. Third drive component; 16. Push block; 17. Guide roller; 18. First support; 19. Fourth drive component; 20. Upper clamping block; 21. Lower clamping block; 22. First horizontal moving module; 23. Second horizontal moving module; 24. Second support; 25. Lower cutter; 26. Upper cutter; 27. Fifth drive component; 28. Pad block; 29. ​​Support roller. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Reference Figure 1 This embodiment provides a welding device for recycling steel coil strapping, including a front conveying mechanism 2, a rear conveying mechanism 3, a front clamping and feeding assembly 4, a rear clamping and feeding assembly 5, a shearing assembly 6, and a welding assembly 7 mounted on a frame 1. The front clamping and feeding assembly 4 is located on the output side of the front conveying mechanism 2. It is used to clamp the strap when the rear end of the front strap conveyed by the front conveying mechanism 2 reaches the cutting station, and cooperates with the cutting assembly 6 to cut off the rear end of the front strap. After cutting, the clamped rear end of the front strap moves towards the front end of the rear strap. When the front conveying mechanism 2 conveys the rear end of the front strap to the preset cutting station, the assembly immediately acts to clamp the strap and fix it so that the cutting assembly 6 can cut it. After the end is cut off, the assembly still maintains the clamping state and drives the entire clamping unit to accurately push the processed rear end of the front strap towards the front end of the rear strap. The assembly integrates fixing and feeding functions, ensuring the stability of the strap during cutting (ensuring cut quality) and the displacement accuracy during docking (ensuring tight end face fit). It is one of the core links to achieve automated precision operation. The rear clamping and feeding assembly 5 is located on the input side of the rear conveying mechanism 3. It clamps the strapping when the front end of the rear strapping conveyed by the rear conveying mechanism 3 reaches the shearing station, and works with the shearing assembly 6 to cut off the front end of the rear strapping. After cutting, the clamped front end of the rear strapping moves towards the rear end of the front strapping. Its working process is symmetrical and coordinated with the front assembly: when the rear conveying mechanism 3 conveys the front end of the rear strapping to the shearing station, it clamps and fixes it to cooperate with the shearing; after cutting, it holds the processed front end of the rear strapping and pushes it towards the rear end of the front strapping to complete the docking. Through cooperation with the front assembly, synchronous or sequential processing of the two strapping sections is achieved, jointly completing the complete process of "fixing-cutting-feeding-docking". The welding assembly 7 is located between the front conveying mechanism 2 and the rear conveying mechanism 3. It is used to perform welding after the end faces of the front and rear straps with their cut ends are joined. After the front and rear clamping and feeding assemblies push the cut ends of the two straps into place and achieve close contact, the welding assembly 7 is activated to perform welding operations on the docking area. Since the docking end faces are flat and without gaps (achieved by cutting the ends with the same cutter), ideal conditions are created for welding, thereby forming a high-strength and high-reliability weld, which fundamentally improves the connection quality of the recycling straps.

[0028] Specifically, both the front conveying mechanism 2 and the rear conveying mechanism 3 include a support belt 8 arranged along the conveying direction to support the strapping. A pressure roller 9 is positioned above the support belt 8, and a power roller 10 is positioned below the pressure roller 9. An opening is provided on the support belt 8 to expose the top of the power roller 10, and the top surface of the power roller 10 is higher than the top surface of the support belt 8. A first driving component 11 (such as a motor) is mounted on the frame 1, driving the power roller 10 to rotate continuously. When strapping needs to be conveyed, the pressure roller 9 descends under the drive, pressing the strapping tightly against the top of the rotating power roller 10, using friction to drive the strapping to move along the surface of the support belt 8. By adjusting the pressure, the strapping can maintain a suitable tension during conveying. This active friction drive method ensures smooth and reliable conveying; maintaining tension effectively prevents the strapping from loosening or slipping during conveying, ensuring it is accurately conveyed to the subsequent workstation, which is the foundation for the stable operation of the entire device.

[0029] Furthermore, a second drive component 12 is installed on the frame 1. The end of the telescopic rod of the second drive component 12 is connected to a support plate 13. The roller shaft of the pressure roller 9 is mounted on the support plate 13 via bearings. The frame 1 has a clearance groove 14 to allow the roller shaft of the pressure roller 9 to move vertically. The second drive component 12 (e.g., a cylinder) drives the support plate 13 and the pressure roller 9 mounted thereon to move vertically up and down through telescopic movement. When rising, the pressure roller 9 disengages from the strapping, releasing pressure on the strapping; when descending, the pressure roller 9 presses down on the strapping. This achieves precise control of the conveying state. When the strapping needs to be clamped for cutting or joining, the pressure roller 9 can be raised to release the drive and constraint; when conveying is required, the pressure roller 9 is pressed down to provide driving force. This controllability greatly enhances the coordination and flexibility of the device's actions.

[0030] Furthermore, a third drive component 15 is fixedly installed on one side of the frame 1. A push block 16 is connected to the end of the telescopic rod of the third drive component 15, and the push block 16 is located on the top surface of the strapping belt 8. A vertical guide roller 17 is installed on the side wall of the frame 1 opposite to the push block 16 via bearings. The third drive component 15 (e.g., a cylinder) drives the push block 16 to extend and retract horizontally along the width direction of the strapping belt. When the push block 16 extends, it cooperates with the guide roller 17 (which reduces friction during strapping belt transport) to clamp the strapping belt from both sides, achieving mechanical positioning in its width direction. This lateral positioning mechanism can correct any slight lateral deviation that may occur during strapping belt transport in real time, forcing it to move along a predetermined centerline. This ensures that the strapping belt is accurately and consistently positioned in the width direction when entering critical workstations (cutting, butt welding), which is an important prerequisite for ensuring the accuracy of subsequent processes.

[0031] Specifically, both the front clamping and feeding assembly 4 and the rear clamping and feeding assembly 5 include a first bracket 18. A fourth driving component 19 is provided at the top of the first bracket 18. An upper clamping block 20 is connected to the end of the telescopic rod at the bottom of the fourth driving component 19. A lower clamping block 21 is fixedly installed below the upper clamping block 20, and the top surface of the lower clamping block 21 is flush with the bottom surface of the strapping. The fourth driving component 19 drives the upper clamping block 20 to rise and fall, cooperating with the lower clamping block 21 to clamp or release the strapping. A first horizontal moving module 22 is installed on the frame 1, and the first bracket 18 is slidably mounted on the first horizontal moving module 22. The fourth driving component 19 (such as a hydraulic cylinder or pneumatic cylinder) drives the upper clamping block 20 to perform vertical rising and falling movements, cooperating with the fixed lower clamping block 21 to achieve strong clamping or release of the strapping end. The first horizontal moving module 22 (such as a servo motor-driven lead screw slide) drives the entire first bracket 18 and all its components (including the clamped strapping) to perform precise linear movement along the length of the strapping. This system combines high clamping force with high-precision displacement control. The powerful clamping force ensures that the strapping is absolutely fixed during the cutting process, resulting in a clean cut. The servo-controlled precision feeding ensures that the cut ends of the two strapping sections make accurate contact at the set speed and position, achieving a "zero-gap" connection.

[0032] Specifically, the frame 1 is equipped with two position sensors, which are used to detect the position of the rear end of the front strap and the front end of the rear strap, respectively. The two position sensors are connected to the corresponding front clamping and feeding assembly 4 and rear clamping and feeding assembly 5. The position sensors (such as photoelectric sensors or proximity switches) monitor in real time whether the end of the strap has reached the preset physical position (cutting station). Once a signal is detected, this switch signal is immediately transmitted to the control system of the device (such as PLC). The control system then issues an instruction according to a predetermined program, triggering the corresponding clamping and feeding assembly to perform the clamping action, which significantly improves the automation level, response speed, and consistency and reliability of the equipment.

[0033] Specifically, a second horizontal moving module 23 is installed on the frame 1, and the shearing assembly 6 is slidably mounted on the second horizontal moving module 23 via a second bracket 24. The second horizontal moving module 23 (such as an electric slide table) drives the entire shearing assembly 6 (i.e., the second bracket 24 and all components mounted on it) to reciprocate along a direction perpendicular to the length of the strapping (i.e., the width direction). Depending on the process requirements, it can be moved into the working area (shearing station) or moved out to a clearance position, making the shearing assembly 6 a movable functional module. It enters during shearing and exits after completion, freeing up necessary space for subsequent strapping and welding operations, avoiding spatial interference that might be caused by a fixed structure, resulting in a more compact equipment layout and smoother process transitions.

[0034] Furthermore, the shearing assembly 6 is provided in two sets, respectively used to cut off the rear end of the front section of the strap and the front end of the rear section of the strap; each set of shearing assemblies 6 includes a lower cutter 25 and an upper cutter 26. The lower cutter 25 is fixedly mounted on the second bracket 24, and the top surface of the lower cutter 25 is flush with the bottom surface of the strap; a fifth drive component 27 is mounted on the second bracket 24, and the end of the telescopic rod at the bottom of the fifth drive component 27 is connected to the upper cutter 26; when the shearing assembly 6 moves to the work position and the end of the strap is clamped and positioned above the blade, the fifth drive component 27 (such as a stamping cylinder) quickly drives the upper cutter 26 to move downward, forming a shearing pair with the fixed lower cutter 25, cutting off the strap end that extends between them like scissors; through precision machining and installation, it is ensured that the working surface of the lower cutter 25 is strictly flush with the conveying / clamping reference surface (the bottom surface of the strap), thereby ensuring that the two new end faces cut out are not only flat and vertical, but also have the same height, which is the physical basis for achieving perfect docking.

[0035] Furthermore, a pad 28 is installed on the second support 24. The pad 28 is located on the side of the lower cutter 25 near the strap, and the top surface of the pad 28 is higher than the top surface of the lower cutter 25. The top surface of the pad 28 away from the lower cutter 25 is a slope, and the outer edge of the slope is lower than the bottom surface of the strap. In the initial stage of the shearing assembly 6 moving laterally towards the strap, the hanging end of the strap will first contact the low slope at the front end of the pad 28. As the assembly continues to advance, the slope gradually "lifts up" the hanging end (the end of the strap extending from the clamp may droop under the action of gravity), guiding it to rise smoothly along the slope until the end slides completely to the plane of the top of the pad 28, and finally transitions to the top surface of the lower cutter 25, ready to be sheared. This inclined guide mechanism is crucial, as it cleverly transforms potential "lateral hard collisions" into "smooth climbing transitions," effectively preventing the cutter's edge from directly impacting or scratching the strapping edge, protecting the material integrity of the strapping cut area, and ensuring accurate and stable positioning of the strapping end before cutting.

[0036] Furthermore, two support rollers 29 are mounted on the second bracket 24 via bearings, respectively used to support the ends of the front and rear straps. The top surface of the support roller 29 is flush with the bottom surface of the strap, and the axis of the support roller 29 is parallel to the length direction of the strap. The pad 28 is located between the support roller 29 and the lower cutter 25. In the initial stage of the lateral movement of the shearing assembly 6, the suspended strap end first falls on the wheel surface of the corresponding support roller 29. Since the support roller 29 can rotate freely, as the assembly continues to move laterally, there is rolling friction between the strap end and the support roller 29, with minimal resistance, and the end is smoothly "held". Subsequently, the end transitions from the rotating support roller 29 to the inclined surface of the fixed pad 28, completing the subsequent guiding process. During welding, the ends of the two joined straps are also supported from below by these two support rollers 29. The support roller 29 forms the first-stage low-friction support mechanism for the overhanging end, creating a perfect second-stage progressive guide with the inclined surface of the pad 28, greatly reducing resistance and potential scratches during the introduction process. At the welding station, the support roller 29 provides a stable and consistent support reference surface for the docking area, preventing misalignment of the docking position due to welding pressure or thermal deformation, thus ensuring the final welding quality. The welding assembly 7 is integrated onto the same movable second bracket 24, achieving precise coordinated positioning between the shearing and welding stations.

[0037] The working process of the welding device in this embodiment is as follows: The first pre-treated (i.e., stripped of its buckle) waste strapping to be recycled is fed into the front conveyor mechanism 2 from the input side. The front conveyor mechanism 2 is started, and with the cooperation of the first drive component 11 and the pressure roller 9, the strapping is smoothly conveyed towards the rear conveyor mechanism 3. When its front end reaches the preset clamping position on the rear conveyor mechanism 3, the rear position sensor is triggered, and the rear clamping and feeding assembly 5 is activated to clamp and fix the front end of the strapping.

[0038] The new waste strapping is fed into the front conveyor 2 from the input side as the "front section strapping". The front conveyor 2 is activated and conveys it backward. When its rear end reaches the shearing station at the end of the front conveyor 2, the front position sensor is triggered, and the front clamping and feeding assembly 4 immediately acts to clamp and fix the rear end of the "front section strapping".

[0039] At this point, the device has stably clamped two strapping sections: the rear end of the newly entered "front strapping" and the front end of the already positioned "rear strapping." The control system commands the second horizontal movement module 23 to drive the shearing assembly 6 to move laterally into the shearing station. During the movement, the overhanging ends of the two strapping sections are successively supported by the rolling bearings of the corresponding support rollers 29 and smoothly guided by the inclined surfaces of the pads 28, finally being precisely positioned at the preset shearing positions of their respective lower cutters 25. Subsequently, the fifth drive components 27 of the two shearing assemblies 6 actuate, driving the upper cutter 26 to quickly descend and cut off the ends of the two strapping sections that need to be joined, thereby obtaining two flat, matching new end faces.

[0040] After the shearing action is completed, the upper cutter 26 is lifted, and the shearing assembly 6 quickly moves laterally out of the shearing station to avoid obstruction. Subsequently, the first horizontal moving module 22 of the front and rear clamping and feeding assemblies is started synchronously under the precise control of the control system, driving the strapping segments they are clamping to move precisely towards each other along a straight line, ultimately achieving a tight and seamless connection on the stable support plane provided by the support roller 29. The welding assembly 7 integrated on the second bracket 24 (whose welding head is located above the support roller 29, facing downwards directly at the docking end faces of the two strapping segments) is then activated to weld the tightly contacting docking end faces, forming a high-strength welded joint.

[0041] After welding is completed, the front and rear clamping and feeding assemblies release their grip on the strapping. At this point, the front and rear strapping sections are welded into a continuous strapping. The conveying mechanism starts, transporting the continuous strapping as a whole towards the winding mechanism on the output side of the rear conveying mechanism 3, until the front end of the continuous strapping reaches the preset clamping position on the rear conveying mechanism 3, and is clamped and fixed again by the rear clamping and feeding assembly 5. This continuous strapping then becomes the "rear strapping" to be used in the next welding cycle. The front conveying mechanism 2 continues to input the next waste strapping, and continues to perform the above steps, welding the pre-treated waste strapping sections into a continuous strapping, which is then wound into a reel in subsequent processes.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding device for steel coil strap recovery, characterized by, It includes a front conveying mechanism (2), a rear conveying mechanism (3), a front clamping belt feeding assembly (4), a rear clamping belt feeding assembly (5), a shearing assembly (6), and a welding assembly (7) mounted on a frame (1); The front clamping and feeding assembly (4) is located on the output side of the front conveying mechanism (2) and is used to clamp the strap when the rear end of the front strap conveyed by the front conveying mechanism (2) reaches the cutting station, and cooperate with the cutting assembly (6) to cut off the rear end of the front strap, and after cutting off, clamp the rear end of the front strap and move it toward the front end of the rear strap. The rear clamping and feeding assembly (5) is located on the input side of the rear conveying mechanism (3) and is used to clamp the strap when the front end of the rear strap conveyed by the rear conveying mechanism (3) reaches the cutting station, and cooperate with the cutting assembly (6) to cut off the front end of the rear strap, and move towards the rear end of the front strap after cutting off the front end of the clamped rear strap. The welding assembly (7) is located between the front conveying mechanism (2) and the rear conveying mechanism (3) and is used to perform welding after the front and rear straps at the cut-off ends are brought together.

2. The welding device for steel coil strip recycling according to claim 1, characterized in that, Both the front conveying mechanism (2) and the rear conveying mechanism (3) include a support belt (8) arranged along the conveying direction for supporting the strapping; a pressure roller (9) is provided above the support belt (8), and a power roller (10) is provided below the pressure roller (9). An opening is provided on the support belt (8) to expose the top of the power roller (10), and the top surface of the power roller (10) is higher than the top surface of the support belt (8); a first driving component (11) is installed on the frame (1) for driving the power roller (10) to rotate, thereby cooperating with the pressure roller (9) to drive the strapping to move along its length direction by friction, and keeping the strapping taut during the conveying process.

3. The welding device for recycling steel coil strapping as described in claim 2, characterized in that, The frame (1) is equipped with a second drive component (12), and the end of the telescopic rod of the second drive component (12) is connected to a support plate (13). The roller shaft of the pressure roller (9) is mounted on the support plate (13) through a bearing. The frame (1) is provided with a clearance groove (14) for avoiding the up and down movement of the roller shaft of the pressure roller (9). The second drive component (12) is used to drive the pressure roller (9) to rise and fall and cooperate with the power roller (10) to press or release the strapping.

4. The welding device for recycling steel coil strapping as described in claim 2, characterized in that, A third drive component (15) is fixedly installed on one side of the frame (1). The end of the telescopic rod of the third drive component (15) is connected to a push block (16), which is located on the top surface of the strap (8). A vertical guide roller (17) is installed on the side wall of the frame (1) opposite to the push block (16) through a bearing. The third drive component (15) is used to drive the push block (16) to extend and retract along the width of the strap, and cooperate with the guide roller (17) to perform lateral positioning of the strap.

5. The welding device for recycling steel coil strapping as described in claim 1, characterized in that, Both the front clamping and feeding assembly (4) and the rear clamping and feeding assembly (5) include a first bracket (18). The top of the first bracket (18) is provided with a fourth driving component (19). The end of the telescopic rod at the bottom of the fourth driving component (19) is connected to an upper clamping block (20). A lower clamping block (21) is fixedly installed below the upper clamping block (20), and the top surface of the lower clamping block (21) is flush with the bottom surface of the strapping. The fourth driving component (19) is used to drive the upper clamping block (20) to rise and fall, and cooperate with the lower clamping block (21) to clamp or release the strapping. A first horizontal moving module (22) is installed on the frame (1). The first bracket (18) is slidably installed on the first horizontal moving module (22). The first horizontal moving module (22) is used to drive the first bracket (18) to move along the length direction of the strapping.

6. The welding device for recycling steel coil strapping as described in claim 1, characterized in that, The frame (1) is equipped with two position sensors, which are used to detect the position of the rear end of the front strap and the position of the front end of the rear strap, respectively. The two position sensors are connected to the corresponding front clamping and feeding assembly (4) and rear clamping and feeding assembly (5) to realize linkage control.

7. The welding device for recycling steel coil strapping as described in claim 1, characterized in that, A second horizontal moving module (23) is installed on the frame (1). The shearing component (6) is slidably mounted on the second horizontal moving module (23) via a second bracket (24). The second horizontal moving module (23) is used to drive the shearing component (6) to move along the width direction of the strapping, so that the shearing component (6) switches between the shearing station and the avoidance station.

8. The welding device for recycling steel coil strapping as described in claim 7, characterized in that, The shearing assembly (6) is provided in two sets, which are used to cut off the rear end of the front strap and the front end of the rear strap, respectively. Each set of shearing assemblies (6) includes a lower cutter (25) and an upper cutter (26). The lower cutter (25) is fixedly installed on the second bracket (24), and the top surface of the lower cutter (25) is flush with the bottom surface of the strap. A fifth driving component (27) is installed on the second bracket (24). The end of the telescopic rod at the bottom of the fifth driving component (27) is connected to the upper cutter (26). The fifth driving component (27) is used to drive the upper cutter (26) to rise and fall, and cooperate with the lower cutter (25) to cut off the end of the strap.

9. The welding device for recycling steel coil strapping as described in claim 8, characterized in that, A pad (28) is installed on the second bracket (24). The pad (28) is located on the side of the lower cutter (25) near the strapping, and the top surface of the pad (28) is higher than the top surface of the lower cutter (25). The top surface of the pad (28) away from the lower cutter (25) is a slope, and the height of the outer edge of the slope is lower than the height of the bottom surface of the strapping. During the process of the shearing assembly (6) moving laterally into the shearing station, the slope is used to support and guide the end of the strapping that is drooping due to gravity, so that it can smoothly transition to the lower cutter (25).

10. The welding device for recycling steel coil strapping as described in claim 9, characterized in that, The second bracket (24) is equipped with two rollers (29) via bearings, which are used to support the ends of the front and rear straps respectively. The top surface of the roller (29) is level with the bottom surface of the strap, and the axial direction of the roller (29) is parallel to the length direction of the strap. The pad (28) is located between the roller (29) and the lower cutter (25). During the process of the shearing assembly (6) moving laterally into the shearing station, the roller (29) first contacts and supports the drooping end of the strap, and the end of the strap then transitions to the lower cutter (25) via the pad (28). The welding assembly (7) is installed on the second bracket (24) and is located above the roller (29) or the pad (28).

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