Light steel keel welding fast positioning and clamping device

Abstract

The present application relates to the technical field of welding clamping, in particular to a light steel keel welding rapid positioning and clamping device, which comprises a positioning conveyor, a clamping table fixed on one side of the positioning conveyor and a metal welding equipment fixed on the top end of the clamping table. The light steel keel welding rapid positioning and clamping device can realize automatic conveying and accurate positioning of the light steel keel during use, effectively solves the problems of poor positioning accuracy and low consistency of manual feeding, adopts four L-shaped positioning and clamping plates to move from the four corners of the rectangular through hole to the center, adopts the clamping mode of being attached to the four corners inside the keel, utilizes the strongest rigidity of the corner of the keel, avoids the deformation of the thin-walled keel caused by the traditional external clamping, simultaneously realizes the automatic center positioning of the corner of the keel, the positioning and clamping assembly and the limiting seat can automatically exit the welding area before welding, exposes the complete weld, cooperates with the metal welding equipment to realize continuous circumferential welding, and effectively improves the welding strength and sealing performance.

Description

Technical Field

[0001] This invention relates to the field of welding clamping technology, specifically to a rapid positioning and clamping device for welding light steel keel. Background Technology

[0002] The construction decoration and finishing industry is rapidly developing towards industrialization, standardization, and intelligentization. Light steel keel, with its significant advantages such as lightweight yet high strength, convenient installation, and environmental friendliness, has become an indispensable core component in modern building partitions, ceilings, and various structural reinforcement systems. Welding, as the core process in the processing and on-site installation of light steel keel, directly determines the overall quality and construction progress of the project through its operational precision and production efficiency. With the widespread adoption and technological iteration of metal welding equipment in the finishing field, the automation level of welding operations has been greatly improved. The performance of workpiece positioning and clamping devices for welding directly affects the efficiency of metal welding equipment. To meet the stringent requirements of high-end building decoration projects for efficient and high-quality construction, the development of specialized rapid positioning and clamping devices for light steel keel welding, enabling precise control and efficient collaborative operation of the welding process, has become an inevitable trend in the industry's technological upgrading.

[0003] Existing positioning and clamping devices for welding light steel keels generally suffer from technical limitations and are ill-suited to the actual needs of high-end intelligent welding production systems. Most devices employ traditional external clamping structures, resulting in uneven force distribution and a high risk of deformation of thin-walled light steel keels. Furthermore, the clamping area inevitably obstructs the welding zone, leading to discontinuous welds and unstable weld quality. In the critical process of welding the end-face plugs of the keel, existing devices require manual operation for picking up, aligning, and temporarily fixing the plugs. There is a lack of effective coordination between these processes, making it impossible to achieve integrated positioning, clamping, and feeding operations. The operation is cumbersome and positioning accuracy is difficult to guarantee. In addition, existing devices have poor versatility; different keel specifications require replacing the entire set of clamps, making clamping and adjustment time-consuming and labor-intensive. They also lack intelligent motion control mechanisms, preventing seamless integration with automated welding equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a rapid positioning and clamping device for welding light steel keel, in order to solve the problems mentioned in the background art. In the key process of welding the end face plug of the keel, the existing positioning and clamping devices for welding light steel keel require manual picking, alignment and temporary fixing of the plug, the lack of effective coordination between the processes, the inability to achieve integrated operation of positioning, clamping and feeding, the cumbersome operation and the difficulty in guaranteeing positioning accuracy. At the same time, the device has poor versatility, requires the replacement of the entire set of clamps to adapt to different specifications of keels, and lacks an intelligent control mechanism, making it impossible to seamlessly connect with automated welding equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rapid positioning and clamping device for welding light steel keel, comprising a positioning conveyor, a clamping platform fixed to one side of the positioning conveyor, and a metal welding device fixed to the top of the clamping platform. A sliding frame is fixed to the top of the clamping platform, and a limiting seat is slidably engaged with the top of the sliding frame. Several keel limiting frames are fixed to the top of the positioning conveyor. A rectangular through hole is formed in the center of the limiting seat, and a positioning and clamping assembly is disposed inside the rectangular through hole. A switching box is fitted against the side of the limiting seat away from the positioning conveyor, and a switching and adjustment assembly is disposed outside the switching box. A fixing frame is fixed to the top of the clamping platform near the switching box. The positioning and clamping assembly comprises four positioning and clamping plates, which are sequentially arranged at the corners of the rectangular through hole.

[0006] Furthermore, each of the positioning clamping plates has an L-shaped side, and a second electric telescopic rod is fixed to the outside of the limiting seat on the side near each positioning clamping plate. The output end of the second electric telescopic rod is fixedly connected to the positioning clamping plate on the corresponding side.

[0007] Furthermore, an auxiliary rod is fixed to one side of each of the positioning clamping plates. One end of the auxiliary rod is slidably mounted through the side wall of the limiting seat. A connecting rod is fixed to the end of the auxiliary rod away from the positioning clamping plate. A liquid spraying assembly is provided on the outside of the connecting rod.

[0008] Furthermore, the switching adjustment assembly includes a guide rod and a lead screw. The guide rod is disposed on one side of the switching box, and the lead screw is disposed on the other side of the switching box. Both ends of the guide rod and both ends of the lead screw are rotatably mounted through a support frame, and one end of the support frame is fixed to one side of a limiting seat.

[0009] Furthermore, a stepper motor is fixedly installed on a support frame near the lead screw. The output end of the stepper motor is coaxially and fixedly connected to one end of the lead screw. A nut block is threadedly connected to the outside of the lead screw. One side of the nut block is fixedly connected to one side of the switching box. A guide block is slidably connected to the outside of the guide rod. One side of the guide block is also fixedly connected to one side of the switching box.

[0010] Furthermore, the inside of the switching box has several placement holes of different sizes. The top of the switching box is vertically connected and fixed with a placement box corresponding to the position of each placement hole. The inside of each placement box has a placement groove, and several metal blocking pieces are stacked inside the placement groove.

[0011] Furthermore, a first electric telescopic rod is fixedly installed on one side of the fixed frame, the output end of the first electric telescopic rod is fixedly connected to one side of the limiting seat, and a third electric telescopic rod is fixedly installed on the outside of the top of the fixed frame.

[0012] Furthermore, a push block is fixedly installed at the output end of the third electric telescopic rod, and a limit strip is fixedly installed on the top of the push block away from the switching box.

[0013] Furthermore, the liquid spraying assembly includes a piston rod and a liquid collecting cylinder. The piston rod is fixedly installed at one end of a connecting rod. The liquid collecting cylinder is slidably and sealingly fitted outside the piston end of the piston rod. A positioning frame is fixedly installed outside the liquid collecting cylinder. The positioning frame is fixedly installed outside the limiting seat. An installation groove is provided through the limiting seat near the positioning frame. A one-way drain valve pipe is provided inside the installation groove. The input end of the one-way drain valve pipe passes through and is fixed inside the liquid collecting cylinder.

[0014] Furthermore, a liquid guide pipe is arranged around the outside of the limiting seat, and a one-way liquid inlet valve pipe is fixedly connected to the side of the liquid collecting cylinder near the one-way liquid drain valve pipe. The input end of the one-way liquid inlet valve pipe is fixedly connected to the liquid guide pipe, and the output end of the one-way liquid drain valve pipe is fixedly connected to the stretching guide pipe. The end of the stretching guide pipe away from the one-way liquid drain valve pipe is embedded and fixed on the positioning clamping plate on the corresponding side. Several spray holes communicating with the inside of the stretching guide pipe are opened at the right angle of the positioning clamping plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. By incorporating a positioning conveyor, keel limiting frame, positioning clamping assembly, switching and adjusting assembly, and a first electric telescopic rod, this light steel keel welding rapid positioning clamping device enables automatic feeding and precise positioning of the light steel keel during use. This effectively solves the problems of poor positioning accuracy and low consistency caused by manual feeding. Four L-shaped positioning clamping plates move from the four corners of the rectangular through-hole towards the center, fitting snugly against the four corners inside the keel. Utilizing the strongest rigidity at the keel corners, it avoids deformation of the thin-walled keel caused by traditional external clamping. Simultaneously, it achieves automatic centering of the keel corners, providing reliable coaxiality assurance for subsequent welding. It can automatically switch between different specifications of metal plugs without manual clamp replacement, significantly improving equipment versatility and changeover efficiency. Before welding, the positioning clamping assembly and limiting seat can automatically retract from the welding area, exposing the complete weld seam. Combined with metal welding equipment, it enables continuous circumferential welding, effectively improving welding strength and sealing performance, meeting the requirements of high-end intelligent welding production systems.

[0017] 2. The automatic liquid spraying assembly, consisting of a piston rod, a liquid collecting cylinder, a one-way liquid inlet valve pipe, a one-way liquid outlet valve pipe, and spray nozzles, enables the quick positioning and clamping device for welding light steel keel to simultaneously complete the liquid spraying process using the clamping action of the positioning clamping plate. No additional power source is required. The device features a compact structure and high timing matching. The sprayed welding-specific anti-spatter lubricant forms a uniform film on the guide surface, reducing frictional resistance when the metal plug is pushed in, effectively preventing jamming, reducing component wear, and preventing weld slag from adhering during welding, thus reducing post-weld cleaning workload. This further improves the operating efficiency of metal welding equipment and the surface quality of the weld. The automatic liquid replenishment function also ensures the continuous and stable operation of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the positioning conveyor and clamping platform of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the limiting seat and the second electric telescopic rod of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the fixing frame and the first electric telescopic rod of the present invention;

[0022] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 6 For the present invention Figure 4 Enlarged structural diagram at point B;

[0024] Figure 7 This is a side view of the switching box and lead screw of the present invention.

[0025] Figure 8 This is a partial cross-sectional perspective view of the switching box and the placement box of the present invention.

[0026] Figure 9 This is a partial cross-sectional three-dimensional structural diagram of the limiting seat and positioning clamping plate of the present invention;

[0027] Figure 10 For the present invention Figure 9 Enlarged structural diagram at point C;

[0028] Figure 11 For the present invention Figure 9 Enlarged structural diagram at point D.

[0029] In the attached diagram, the components represented by each number are as follows: 1. Positioning conveyor; 2. Clamping table; 3. Metal welding equipment; 4. Keel limit frame; 5. Limiting seat; 6. Sliding frame; 7. Fixed frame; 8. First electric telescopic rod; 9. Rectangular through hole; 10. Positioning clamping plate; 11. Second electric telescopic rod; 12. Auxiliary rod; 13. Switching box; 14. Placement hole; 15. Placement box; 16. Support frame; 17. Guide rod ; 18. Lead screw; 19. Nut block; 20. Stepper motor; 21. Guide block; 22. Third electric telescopic rod; 23. Push block; 24. Limiting strip; 25. Connecting rod; 26. Piston rod; 27. Liquid collecting cylinder; 28. Positioning frame; 29. ​​Liquid guiding pipe; 30. One-way liquid inlet valve pipe; 31. One-way liquid outlet valve pipe; 32. Tensioning guide pipe; 33. Spray hole; 34. Mounting groove; 35. Placement groove; 36. Metal plug. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figure 1 - Figure 4 A quick positioning and clamping device for welding light steel keel includes a positioning conveyor 1, a clamping platform 2 fixed to one side of the positioning conveyor 1, and a metal welding device 3 fixed to the top of the clamping platform 2. A sliding frame 6 is fixed to the top of the clamping platform 2, and a limiting seat 5 is slidably engaged with the top of the sliding frame 6. Several keel limiting frames 4 are fixed to the top of the positioning conveyor 1. A rectangular through hole 9 is opened through the middle of the limiting seat 5. A positioning clamping component is arranged inside the rectangular through hole 9. A switching box 13 is attached to the side of the limiting seat 5 away from the positioning conveyor 1. A switching adjustment component is arranged outside the switching box 13. A fixing frame 7 is fixed to the top of the clamping platform 2 near the switching box 13. The positioning clamping component includes four positioning clamping plates 10, which are arranged sequentially at the corners of the rectangular through hole 9.

[0032] Each positioning clamping plate 10 has an L-shaped side. A second electric telescopic rod 11 is fixed to the outside of the limiting seat 5 on the side near each positioning clamping plate 10. The output end of the second electric telescopic rod 11 is fixedly connected to the positioning clamping plate 10 on the corresponding side.

[0033] Each positioning clamping plate 10 has an auxiliary rod 12 fixed on one side. One end of the auxiliary rod 12 is slidably installed through the side wall of the limiting seat 5. A connecting rod 25 is fixed to the end of the auxiliary rod 12 away from the positioning clamping plate 10.

[0034] The switching adjustment assembly includes a guide rod 17 and a lead screw 18. The guide rod 17 is located on the outside of one side of the switching box 13, and the lead screw 18 is located on the other side of the switching box 13. Both ends of the guide rod 17 and both ends of the lead screw 18 are rotatably mounted through the support frame 16. One end of the support frame 16 is fixed to one side of the limit seat 5.

[0035] A stepper motor 20 is fixedly installed on a support frame 16 near the lead screw 18. The output end of the stepper motor 20 is coaxially fixedly connected to one end of the lead screw 18. A nut block 19 is threadedly connected to the outside of the lead screw 18. One side of the nut block 19 is fixedly connected to one side of the switching box 13. A guide block 21 is slidably connected to the outside of the guide rod 17. One side of the guide block 21 is also fixedly connected to one side of the switching box 13.

[0036] The switching box 13 has several placement holes 14 of different sizes through it. The top of the switching box 13 is vertically connected to and fixed with a placement box 15 corresponding to the position of each placement hole 14. The placement box 15 has a placement groove 35 inside it. Several metal blocking pieces 36 are stacked inside the placement groove 35.

[0037] A first electric telescopic rod 8 is fixedly installed on one side of the fixed frame 7. The output end of the first electric telescopic rod 8 is fixedly connected to one side of the limiting seat 5. A third electric telescopic rod 22 is fixedly installed on the outside of the top of the fixed frame 7.

[0038] A push block 23 is fixedly installed at the output end of the third electric telescopic rod 22, and a limit strip 24 is fixedly installed on the top of the push block 23 away from the side of the switching box 13.

[0039] In this embodiment, during operation, the light steel keel requiring end-face sealing is placed sequentially into the keel limiting frame 4 at the top of the positioning conveyor 1. The keel limiting frame 4 is a U-shaped slotted clamping frame with one sealed end, fixedly installed at the top of the positioning conveyor 1. Its slot width is adapted to the width of the main light steel keel, enabling precise lateral limiting of the keel and ensuring that the keel remains straight during conveying without lateral deviation. The positioning conveyor 1 drives the keel forward. When the end face of the keel moves to a designated position coaxially aligned with the rectangular through hole 9 on the limiting seat 5, the positioning conveyor 1 stops operating.

[0040] At this time, the first electric telescopic rod 8 is activated, pushing the limiting seat 5 to move along the sliding frame 6 towards the positioning conveyor 1, so that the end of the keel extends into the rectangular through hole 9, and the four positioning clamping plates 10 surround the end of the keel. This movable limiting seat 5 design lays the foundation for subsequent welding avoidance actions, and unlike the fixed installation clamp structure in the prior art, it can be withdrawn from the welding area before welding. Subsequently, the four second electric telescopic rods 11 are activated simultaneously, driving the corresponding L-shaped positioning clamping plates 10 to extend towards the center of the rectangular through hole 9. The four positioning clamping plates 10 are respectively attached to the four corners inside the keel, and the positioning clamping plates 10 move from the periphery to the center to clamp the keel in a centered manner. Since the four corners of the keel are the most rigid, this clamping method effectively avoids the problem of thin-walled keel denting and deformation that is easily caused by traditional external clamping. At the same time, the four positioning clamping plates 10 move synchronously, realizing the automatic centering and positioning of the keel. The positioning accuracy is high and the clamping is stable and reliable. It solves the two core defects of traditional clamping fixtures in the existing technology: clamping deformation and insufficient positioning accuracy. It provides a guarantee for the coaxiality requirements of subsequent metal plug 36 welding.

[0041] After clamping, the metal plug 36 of the corresponding size can be automatically switched according to the specifications of the keel being processed. During switching, the stepper motor 20 starts, driving the lead screw 18 to rotate. The lead screw 18 drives the nut block 19 to move axially along the lead screw 18 through threaded engagement. The nut block 19 drives the switching box 13 to move left and right along the guide rod 17, so that the corresponding specification placement hole 14 in the switching box 13 is coaxially aligned with the guide channel formed by the push block 23 and the four positioning clamping plates 10. The metal plugs 36 stacked in the placement box 15 automatically fall into the placement hole 14 under the action of gravity, completing the automatic switching of the plug specification. This design changes the outdated method in the existing technology that requires manual replacement of the entire set of fixtures to adapt to different specifications of keels. It can complete the changeover in a short time without manual intervention, significantly improving the versatility of the equipment and production efficiency.

[0042] After the blocking plate switching is completed, the third electric telescopic rod 22 is activated, driving the push block 23 to extend forward. The push block 23 pushes the metal blocking plate 36 in the placement hole 14 smoothly into the keel end face along the inner guide surface of the four positioning clamping plates 10 until the metal blocking plate 36 is tightly fitted with the keel end face. The limiting strip 24 at the top of the push block 23 is used to block the next metal blocking plate 36 stacked in the placement box 15 when the push block 23 retracts, preventing it from retracting with the push block 23 and causing a jamming failure. This detailed design solves the problems of inaccurate manual alignment and high equipment failure rate in the prior art, helps to ensure the parallelism and concentricity of the metal blocking plate 36 with the keel end face, and improves the stability of equipment operation.

[0043] After the metal plug 36 is pushed into place, the four second electric telescopic rods 11 simultaneously drive the positioning clamping plate 10 back to its initial position. Then, the first electric telescopic rod 8 pulls the limiting seat 5 back along the sliding frame 6, so that the welding end face of the metal plug 36 and the keel is fully exposed without any obstruction. At this time, the metal welding equipment 3 starts and continuously welds the entire annular weld seam connecting the metal plug 36 and the keel. This automatic avoidance design solves the problem of traditional clamps obstructing the weld seam in metal plug technology, which prevents continuous welding. It can achieve complete annular weld seam welding, which helps to improve welding strength and sealing performance. After welding is completed, the positioning conveyor 1 starts again, transporting the processed keel out and simultaneously transporting the next keel to be processed to the designated position, entering the next work cycle.

[0044] The entire process achieves integrated collaborative operation, encompassing keel conveying, automatic centering and clamping, automatic plate switching, automatic push-in positioning, and automatic obstacle avoidance welding. No manual operation is required; all actions are precisely controlled by the existing electrical system. This design effectively solves the problems of ineffective coordination between processes and cumbersome manual operation in the prior art, significantly improving production efficiency and welding quality. Furthermore, the all-electric drive architecture can interface with automated welding robots and production line management systems, meeting the requirements of high-end intelligent welding production systems.

[0045] Example 2: Please refer to Figure 2 - Figure 9 This embodiment further illustrates Example 1, wherein a liquid spraying assembly is provided on the outside of the connecting rod 25.

[0046] The liquid spraying assembly includes a piston rod 26 and a liquid collecting cylinder 27. The piston rod 26 is fixedly installed at one end of the connecting rod 25. The liquid collecting cylinder 27 is slidably and sealingly fitted outside the piston end of the piston rod 26. A positioning frame 28 is fixedly installed outside the liquid collecting cylinder 27. The positioning frame 28 is fixedly installed outside the limiting seat 5. An installation groove 34 is provided through the limiting seat 5 near the positioning frame 28. A one-way drain valve pipe 31 is provided inside the installation groove 34. The input end of the one-way drain valve pipe 31 passes through and is fixed inside the liquid collecting cylinder 27.

[0047] The limiting seat 5 is surrounded by a liquid guide pipe 29. The liquid collection cylinder 27 is fixedly connected to a one-way liquid inlet valve pipe 30 on the side near the one-way liquid discharge valve pipe 31. The input end of the one-way liquid inlet valve pipe 30 is fixedly connected to the liquid guide pipe 29. The output end of the one-way liquid discharge valve pipe 31 is fixedly connected to a stretching guide pipe 32. The end of the stretching guide pipe 32 away from the one-way liquid discharge valve pipe 31 is embedded and fixed on the positioning clamping plate 10 on the corresponding side. Several spray holes 33 communicating with the inside of the stretching guide pipe 32 are opened at the right angle of the positioning clamping plate 10.

[0048] In this embodiment, a liquid spraying component is added based on embodiment one. The liquid used in the liquid spraying component is a commercially available welding anti-spatter lubricant, which is a known technology. This liquid is a mature product widely used in the industrial welding field, which has the functions of lubrication and drag reduction, welding anti-spatter, does not produce harmful gases, and does not affect the weld formation quality and mechanical properties.

[0049] During operation, when the four second electric telescopic rods 11 synchronously extend the L-shaped positioning clamping plates 10 towards the center of the rectangular through hole 9 for clamping, each positioning clamping plate 10 synchronously drives the auxiliary rod 12 fixedly connected to it to move in the same direction. The auxiliary rod 12 then drives the connecting rod 25 and the piston rod 26 fixed to the end of the connecting rod 25 to move into the liquid collection cylinder 27. The piston end of the piston rod 26 slides inside the liquid collection cylinder 27, squeezing the welding anti-spatter lubricant stored in the liquid collection cylinder 27. The squeezed welding anti-spatter lubricant enters the stretching guide tube 32 through the one-way drain valve pipe 31, and is finally evenly sprayed out from several spray holes 33 at the right angle of the positioning clamping plate 10, adhering to the inner guide surface of the positioning clamping plate 10.

[0050] This design utilizes the clamping action of the second electric telescopic rod 11 to synchronously drive the liquid spraying process, eliminating the need for an additional power source. It features a compact structure and perfectly matched action timing. The welding anti-spatter lubricant forms a uniform lubricating film on the guide surface of the positioning clamping plate 10, significantly reducing frictional resistance during the pushing of the metal plug 36, effectively preventing plug jamming, and reducing wear between the positioning clamping plate 10 and the metal plug 36, thus extending the service life of the components. Furthermore, the anti-spatter lubricant adhering to the corners of the metal plug 36 prevents high-temperature weld slag from splashing and adhering to the workpiece surface during subsequent welding, greatly reducing post-weld cleaning workload and contributing to improved weld surface quality.

[0051] When the metal plug 36 is pushed into place, the four second electric telescopic rods 11 simultaneously drive the positioning clamping plate 10 back to its initial position. The positioning clamping plate 10 then moves the piston rod 26 outwards from the liquid collection cylinder 27 via the auxiliary rod 12 and connecting rod 25. At this time, a negative pressure is created inside the liquid collection cylinder 27. Under this negative pressure, the welding anti-splatter lubricant in the liquid guide pipe 29 is drawn into the liquid collection cylinder 27, completing the automatic liquid replenishment process and preparing for the next spraying action. The liquid guide pipe 29 is connected to an external liquid storage tank, enabling continuous liquid replenishment to the spraying assembly without frequent refilling.

[0052] The entire liquid spraying and replenishment process is fully automated and seamlessly integrated with the overall working cycle of the device. No manual operation is required, which further improves the automation level and operational stability of the device and solves the problems of easy jamming when pushing in the blockage plate, rapid wear of parts, and large amount of post-weld cleaning work in the existing technology.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid positioning and clamping device for welding light steel keel, comprising a positioning conveyor, a clamping platform fixed to one side of the positioning conveyor, and a metal welding device fixed to the top of the clamping platform, characterized in that: A sliding frame is fixed to the top of the clamping platform, and a limiting seat is slidably engaged with the top of the sliding frame. Several keel limiting frames are fixed to the top of the positioning conveyor. A rectangular through hole is opened through the middle of the limiting seat. A positioning clamping component is arranged inside the rectangular through hole. A switching box is attached to the side of the limiting seat away from the positioning conveyor. A switching adjustment component is arranged outside the switching box. A fixing frame is fixed to the top of the clamping platform near the switching box. The positioning and clamping assembly includes four positioning and clamping plates, which are arranged sequentially at the corners of the rectangular through hole.

2. The quick positioning and clamping device for welding light steel keel according to claim 1, characterized in that: Each of the positioning clamping plates has an L-shaped side. A second electric telescopic rod is fixed to the outside of the limiting seat on the side near each positioning clamping plate. The output end of the second electric telescopic rod is fixedly connected to the positioning clamping plate on the corresponding side.

3. The quick positioning and clamping device for welding light steel keel according to claim 1, characterized in that: Each of the positioning clamping plates has an auxiliary rod fixed on one side. One end of the auxiliary rod is slidably mounted through the side wall of the limiting seat. The end of the auxiliary rod away from the positioning clamping plate is fixed with a connecting rod, and a liquid spraying assembly is provided on the outside of the connecting rod.

4. The quick positioning and clamping device for welding light steel keel according to claim 1, characterized in that: The switching adjustment assembly includes a guide rod and a lead screw. The guide rod is located on one side of the switching box, and the lead screw is located on the other side of the switching box. Both ends of the guide rod and both ends of the lead screw are rotatably mounted through a support frame. One end of the support frame is fixed to one side of a limiting seat.

5. The quick positioning and clamping device for welding light steel keel according to claim 4, characterized in that: A stepper motor is fixedly installed on a support frame near the lead screw. The output end of the stepper motor is coaxially and fixedly connected to one end of the lead screw. A nut block is threadedly connected to the outside of the lead screw. One side of the nut block is fixedly connected to one side of the switching box. A guide block is slidably connected to the outside of the guide rod. One side of the guide block is also fixedly connected to one side of the switching box.

6. The quick positioning and clamping device for welding light steel keel according to claim 1, characterized in that: The switching box has several placement holes of different sizes through it. The top of the switching box is vertically connected to and fixed with a placement box corresponding to the position of each placement hole. The placement box has a placement slot inside, and several metal blocking pieces are stacked inside the placement slot.

7. The quick positioning and clamping device for welding light steel keel according to claim 1, characterized in that: A first electric telescopic rod is fixedly installed on one side of the fixed frame, and the output end of the first electric telescopic rod is fixedly connected to one side of the limiting seat. A third electric telescopic rod is fixedly installed on the outside of the top of the fixed frame.

8. The quick positioning and clamping device for welding light steel keel according to claim 7, characterized in that: A push block is fixedly installed at the output end of the third electric telescopic rod, and a limit strip is fixedly installed on the top of the push block away from the switching box.

9. The quick positioning and clamping device for welding light steel keel according to claim 3, characterized in that: The liquid spraying assembly includes a piston rod and a liquid collecting cylinder. The piston rod is fixedly installed at one end of a connecting rod. The liquid collecting cylinder is slidably and sealingly fitted outside the piston end of the piston rod. A positioning frame is fixedly installed outside the liquid collecting cylinder. The positioning frame is fixedly installed outside a limiting seat. An installation groove is provided through the limiting seat near the positioning frame. A one-way drain valve pipe is provided inside the installation groove. The input end of the one-way drain valve pipe passes through and is fixed inside the liquid collecting cylinder.

10. A quick positioning and clamping device for welding light steel keel according to claim 9, characterized in that: The limiting seat is surrounded by a liquid guide pipe. The side of the liquid collecting cylinder near the one-way drain valve pipe is fixedly connected to a one-way inlet valve pipe. The input end of the one-way inlet valve pipe is fixedly connected to the liquid guide pipe. The output end of the one-way drain valve pipe is fixedly connected to a stretching guide pipe. The end of the stretching guide pipe away from the one-way drain valve pipe is embedded and fixedly fixed on the positioning clamping plate on the corresponding side. Several spray holes communicating with the inside of the stretching guide pipe are opened at the right angle of the positioning clamping plate.

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