Automatic laser cutting and welding machine
By designing an automatic laser cutting and welding machine that integrates cutting and welding functions, continuous production of steel coils is achieved, solving the problem of production interruptions caused by frequent steel coil changes and improving production efficiency and welding quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-10
AI Technical Summary
In high-speed continuous stamping production, frequent steel coil replacements cause production line interruptions. Traditional cutting and welding equipment occupies a large area, and the welding quality is difficult to guarantee.
Design an automatic laser cutting and welding machine that integrates cutting and welding functions. It achieves continuous feeding of steel coils through a pressing device and utilizes laser cutting technology to achieve continuous production of steel coils by rapidly switching between cutting and welding states.
It reduces downtime caused by insufficient single roll length, improves production efficiency, ensures welding quality, and reduces equipment adjustment time and floor space.
Smart Images
Figure CN223981337U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a laser automatic cutting and welding machine. Background Technology
[0002] In high-speed continuous stamping production, steel coils are typically supplied as raw materials in coil form and are gradually unwound and fed into the stamping equipment via an uncoiler. However, in actual production, the length of a single steel coil is limited. When a coil of steel strip is used up, the machine must be stopped to replace it with a new coil, causing production line interruptions, severely impacting production efficiency, and resulting in significant capacity losses.
[0003] Because steel coils may develop deformation, burrs, or oxide layers at their ends during transportation or storage, direct welding can easily lead to insufficient weld strength or breakage during stamping. Therefore, the ends of both steel coils must be cut and trimmed separately before welding to ensure a smooth mating surface. Traditionally, the tail of the first steel coil is cut first, followed by the head of the second, before being moved to the welding station. This process requires multiple handling of the steel coils, which is not only inefficient but can also affect welding quality due to positioning deviations. Most production lines use independent cutting and welding machines, requiring the steel coils to be transferred between different stations, increasing equipment footprint and coordination difficulties. Furthermore, traditional welding relies on manual alignment, making it difficult to guarantee the parallelism and gap consistency of the two steel coils, which can easily lead to weld misalignment or incomplete fusion defects.
[0004] Therefore, there is a market demand for a laser automatic cutting and welding machine and cutting and welding method that can perform both cutting and welding, ensure continuous production, and reduce downtime. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a laser automatic cutting and welding machine.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a laser automatic cutting and welding machine, including a frame, a cutting and welding device disposed on the frame, and a pressing device disposed on the frame. The cutting and welding device includes a welding torch that can both cut and weld. The pressing device includes a left pressing frame disposed on the left side of the frame and a right pressing frame disposed on the right side of the frame. The left pressing frame includes a left base plate, a left pressing arm disposed on the left base plate, and a left pressing plate. A first feeding channel for steel coils to enter is formed between the left pressing arm and the left pressing plate and the left base plate. The right pressure frame includes a right base plate that can move left and right, a right pressure arm and a right pressure plate disposed on the right base plate. The right pressure arm and the right pressure plate form a second feeding channel for steel coils to enter between the right base plate and the right pressure arm. The pressure device has at least one working state. The left pressure plate and the right pressure plate are flush and aligned. The first feeding channel and the second feeding channel are flush and aligned and connected. A gap channel is formed between the left pressure plate and the right pressure plate. The welding torch is disposed directly above the gap channel and can move back and forth along the length of the gap channel.
[0007] In some embodiments, the frame further includes a fixed plate, the left pressure frame is fixed to the left side of the fixed plate, and the right bottom plate of the right pressure frame is mounted on the fixed plate by a right bottom plate cylinder. The right pressure frame has a welding state, a first cutting state, and a second cutting state. When the right pressure frame is in the first cutting state, the right bottom plate descends and moves away from the left bottom plate, the left pressure plate is flush with the upper surface of the right pressure arm, and the welding torch can be used to roll the steel along the edge of the left pressure plate. Cutting; when the right pressure frame is in the second cutting state, the right bottom plate rises and is positioned away from the left bottom plate, the left pressure plate is flush with the right pressure plate, and the welding gun can cut along the edge of the right pressure plate; when the right pressure frame is in the welding state, the right bottom plate rises and is positioned close to the left bottom plate, the left pressure plate is flush with the right pressure plate, a weld bead is formed between the left pressure plate and the right pressure plate, and the welding gun is positioned directly above the weld bead and can move along the length of the weld bead.
[0008] In some embodiments, the left pressure frame is provided with a guide groove for upper and lower limiting, and a guide post is fixed on the right base plate. The guide post can move up and down along the guide groove, and the length of the guide groove is the same as the distance that the right base plate can move up and down.
[0009] In some embodiments, a linear module is also fixed along the length of the left pressure arm, and the cutting and welding device includes a welding gun holder that can be slidably disposed on the linear module. The welding gun can be moved relative to the welding gun holder in the left-right and up-down directions by a cylinder.
[0010] In some embodiments, the welding torch has a laser positioner, the laser positioner emitting in a direction parallel to the working direction of the welding torch, for real-time calibration of the relative position of the welding torch with the edges of the left and right pressure plates.
[0011] In some embodiments, an arc-shaped guide plate is provided on the top surface of the right pressure arm, the outer side of the right bottom plate, and the outer side of the left bottom plate.
[0012] In some embodiments, the top surface of the right pressure arm and / or the right bottom plate are provided with a backing for correcting the feeding position of the steel coil.
[0013] In some embodiments, the left pressure plate and / or the right pressure plate are provided with scale lines along the length direction.
[0014] The scope of this utility model is not limited to technical solutions formed by specific combinations of the above-mentioned technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-mentioned technical features or their equivalent features. For example, technical solutions formed by substituting the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.
[0015] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0016] 1. This utility model provides a laser automatic cutting and welding machine and a cutting and welding method. By welding two rolls of steel strip into a long roll, it avoids frequent shutdowns caused by insufficient length of a single roll, ensures continuous production, reduces downtime, and is especially suitable for high-speed progressive die stamping, thereby increasing production capacity.
[0017] 2. The steel strip end cutting and welding are completed on the same equipment, eliminating the material transfer steps between the cutting machine and the welding machine in the traditional process, and shortening the production cycle;
[0018] 3. The right pressure frame is driven by a cylinder to lift and move left and right, and can switch between cutting and welding modes in a few seconds, significantly reducing equipment adjustment time;
[0019] 4. The end face formed by laser cutting is flat and burr-free, and can be directly used as the welding surface, eliminating the need for traditional grinding wheel process. Attached Figure Description
[0020] Appendix Figure 1 This is a schematic diagram of the three-dimensional structure of a laser automatic cutting and welding machine.
[0021] Appendix Figure 2 Top view of a laser automatic cutting and welding machine;
[0022] Appendix Figure 3 A three-dimensional structural diagram of the cutting and welding device and the pressing device;
[0023] The components are: 1. Frame; 11. Fixing plate; 2. Welding gun; 21. Welding gun mounting base; 3. Left pressure frame; 31. Left bottom plate; 32. Left pressure arm; 33. Left pressure plate; 34. Guide groove; 35. Linear module; 4. Right pressure frame; 41. Right bottom plate; 42. Right pressure arm; 43. Right pressure plate; 44. Guide post. Detailed Implementation
[0024] As shown in the attached figures, an automatic laser cutting and welding machine includes a frame 1, a cutting and welding device mounted on the frame 1, and a material pressing device mounted on the frame 1. The cutting and welding device includes a welding torch 2 that can both cut and weld.
[0025] In this embodiment, the welding torch can be connected to the controller via a dual-core optical fiber. By switching the optical fiber, the cutting and welding functions of the welding torch can be switched. Such a laser device that can both cut and weld is available on the market and will not be described in detail here. Choosing such a laser device that can both cut and weld significantly improves the versatility and efficiency of the equipment and avoids the downtime caused by the need to change different tools in traditional equipment.
[0026] like Figure 1 As shown, a linear module 35 is fixed on the left pressure arm 32 along the length direction. The cutting and welding device includes a welding gun fixing seat 21 that can be slidably set on the linear module 35. The welding gun 2 can move relative to the welding gun fixing seat 21 in the left-right and up-down directions via a cylinder.
[0027] like Figure 3 As shown, the pressing device includes a left pressing frame 3 located on the left side of the frame 1 and a right pressing frame 4 located on the right side of the frame 1. The left pressing frame 3 includes a left base plate 31, a left pressing arm 32 and a left pressing plate 33 located on the left base plate 31. The left pressing arm 32 and the left pressing plate 33 form a first feeding channel for steel coils to enter between the left base plate 31 and the left base plate 31. The right pressing frame 4 includes a right base plate 41 that can move left and right and up and down by a cylinder, a right pressing arm 42 and a right pressing plate 43 located on the right base plate 41. The right pressing arm 42 and the right pressing plate 43 form a second feeding channel for steel coils to enter between the right base plate 41 and the right base plate 41.
[0028] The frame 1 also includes a fixing plate 11. The left pressure frame 3 is fixed to the left side of the fixing plate 11. The right bottom plate 41 of the right pressure frame 4 can be raised and lowered on the fixing plate 11 by a cylinder. The right pressure frame 4 has a welding state, a first cutting state and a second cutting state.
[0029] like Figure 2As shown, when the right pressure frame 4 is in the first cutting state, the right bottom plate 41 rises and is positioned away from the left bottom plate 31, the left pressure plate 33 is flush with the right pressure plate 43, and the welding gun 2 can cut along the edge of the right pressure plate 43; when the right pressure frame 4 is in the second cutting state, the right bottom plate 41 falls and is positioned away from the left bottom plate 31, the left pressure plate 33 is flush with the upper surface of the right pressure arm 42, and the welding gun 2 can cut the steel coil along the edge of the left pressure plate 33; when the right pressure frame 4 is in the welding state, the right bottom plate 41 rises and is positioned close to the left bottom plate 31, the left pressure plate 33 is flush with the right pressure plate 43, a weld bead is formed between the left pressure plate 33 and the right pressure plate 43, the welding gun 2 is positioned directly above the weld bead and can move along the length of the weld bead.
[0030] In the first cutting state, the head of the first steel coil is removed, and in the second cutting state, the tail of the second steel coil is removed, so that the head of the first steel coil and the tail of the second steel coil can be aligned flatly, avoiding insufficient weld strength. In the welding state, the first steel coil and the second steel coil can be welded together. The end face formed by laser cutting is flat and burr-free, and can be directly used as the welding surface, eliminating the need for traditional grinding wheel process. Moreover, the weld has high tensile strength. Welding two steel strips into a long coil avoids frequent downtime caused by insufficient length of a single coil. It is especially suitable for high-speed progressive die stamping and improves production capacity.
[0031] The left pressure plate 33 and the right pressure plate 43 are provided with scale lines along the length direction to help the operator quickly position the steel strip feeding position and reduce the difficulty of operation. The top surface of the right pressure arm 42, the right bottom plate 41, and the outer side of the left bottom plate 31 are provided with arc-shaped guide plates extending outward and downward. The arc-shaped guide plate design effectively prevents edge scratches when the steel coil is fed.
[0032] like Figure 1 As shown, the left pressure frame 3 is provided with a guide groove 34 for upper and lower limit positioning, and a guide post 44 is fixed on the right bottom plate 41. The guide post 44 can move up and down along the guide groove 34, and the length of the guide groove 34 is the same as the distance that the right bottom plate 41 can move up and down.
[0033] The welding torch 2 is equipped with a laser positioner. The laser positioner emits in a direction parallel to the working direction of the welding torch 2, and is used to calibrate the relative position of the welding torch 2 with the edges of the left pressure plate 33 and the right pressure plate 43 in real time.
[0034] The top surface of the right pressure arm 42 and the right bottom plate 41 are provided with a support for correcting the feeding position of the steel coil. The support structure can correct the deviation of the steel coil.
[0035] Working principle: The cutting and welding method of the laser automatic cutting and welding machine specifically includes the following steps: Step 1, raise the right base plate 41 until the right pressure plate 43 is flush with the left pressure plate 33, and simultaneously drive the right base plate 41 away from the left pressure plate 33. Introduce one end of the first steel coil from the right side of the upper surface of the right base plate 41 into the second feeding channel below the right pressure plate 43, and then into the first feeding channel below the left pressure plate 33, until one end of the first steel coil is located below the left pressure plate 33. Drive the welding torch 2 to move along the edge of the right pressure plate 43 to perform the first cut; Step 2, lower the right base plate 41 of the pressure device until the upper surface of the right pressure arm 42 is flush with the left pressure plate 33, and simultaneously drive the right base plate 41 away from the left pressure plate 33. 41. Move away from the left pressure plate 33 and introduce one end of the second steel coil into the first feed channel below the left pressure plate 33 from the left side; Step 3. Pull the other end of the second steel coil to the right until the other end of the second steel coil rests on the upper surface of the right pressure arm 42, and drive the welding gun 2 to move along the edge of the left pressure plate 33 to perform a second cut; Step 4. Raise the right bottom plate 41 until the right pressure plate 43 is flush with the left pressure plate 33, and at the same time drive the right bottom plate 41 to move closer to the left bottom plate 31 so that the right pressure plate 43 is flush with the left pressure plate 33, forming a gap channel between the right pressure plate 43 and the left pressure plate 33, and drive the welding gun 2 to move along the gap channel to perform welding, thereby realizing the welding of the first steel coil and the second steel coil.
[0036] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A laser automatic cutting and welding machine, comprising a frame (1), a cutting and welding device arranged on the frame (1), a pressing device arranged on the frame (1), the cutting and welding device comprising a cutting and welding torch (2), characterized in that: The pressing device comprises a left pressing frame (3) arranged on the left side of the rack (1) and a right pressing frame (4) arranged on the right side of the rack (1), the left pressing frame (3) comprises a left bottom plate (31), a left pressing arm (32) and a left pressing plate (33) arranged on the left bottom plate (31), a first feeding channel for the steel coil to enter is formed between the left pressing arm (32), the left pressing plate (33) and the left bottom plate (31), the right pressing frame (4) comprises a right bottom plate (41) capable of moving left and right, a right pressing arm (42) and a right pressing plate (43) arranged on the right bottom plate (41), a second feeding channel for the steel coil to enter is formed between the right pressing arm (42), the right pressing plate (43) and the right bottom plate (41), the pressing device has at least one working state, the left pressing plate (33) and the right pressing plate (43) are arranged in alignment, the first feeding channel and the second feeding channel are in alignment and communication, a gap channel is formed between the left pressing plate (33) and the right pressing plate (43), and the welding gun (2) is arranged above the gap channel and is capable of moving back and forth along the length direction of the gap channel.
2. The laser automatic cutting and welding machine according to claim 1, characterized in that: The rack (1) further comprises a fixed plate (11), the left pressing frame (3) is fixed on the left side of the fixed plate (11), the right bottom plate (41) of the right pressing frame (4) is arranged on the fixed plate (11) and is capable of being lifted up and down through a right bottom plate (41) cylinder, the right pressing frame (4) has a welding state, a first cutting state and a second cutting state, when the right pressing frame (4) is in the first cutting state, the right bottom plate (41) is lifted up and is arranged away from the left bottom plate (31), the left pressing plate (33) is in alignment with the right pressing plate (43), and the welding gun (2) is capable of cutting along the edge of the right pressing plate (43); when the right pressing frame (4) is in the second cutting state, the right bottom plate (41) is lowered and is arranged away from the left bottom plate (31), the left pressing plate (33) is in alignment with the upper surface of the right pressing arm (42), and the welding gun (2) is capable of cutting the steel coil along the edge of the left pressing plate (33); when the right pressing frame (4) is in the welding state, the right bottom plate (41) is lifted up and is arranged close to the left bottom plate (31), the left pressing plate (33) is in alignment with the right pressing plate (43), a welding channel is formed between the left pressing plate (33) and the right pressing plate (43), and the welding gun (2) is arranged above the welding channel and is capable of moving along the length direction of the welding channel.
3. The laser automatic cutting and welding machine according to claim 2, characterized in that: A guide groove (34) for up-down limiting is arranged on the left pressing frame (3), a guide column (44) is fixed on the right bottom plate (41), the guide column (44) is capable of moving up and down along the guide groove (34), and the length of the guide groove (34) is the same as the distance that the right bottom plate (41) can move up and down.
4. The laser automatic cutting welder according to claim 1, characterized in that: A linear module (35) is also fixed on the left pressing arm (32) along the length direction, and the cutting and welding device comprises a welding gun fixing seat (21) slidably arranged on the linear module (35), and the welding gun (2) can move relative to the welding gun fixing seat (21) in the left-right direction and the up-down direction through a cylinder.
5. The laser automatic cutting and welding machine according to claim 4, characterized in that: The welding gun (2) is provided with a laser positioner, the emission direction of the laser positioner is parallel to the working direction of the welding gun (2), and the relative positions of the welding gun (2) and the edges of the left pressing plate (33) and the right pressing plate (43) are calibrated in real time.
6. The laser automatic cutting welder of claim 1, wherein: Arc-shaped guide plates are arranged on the outer sides of the top surface of the right pressing arm (42), the right bottom plate (41) and the left bottom plate (31) and extend outward and downward.
7. The laser automatic cutting welder of claim 1, wherein: A backstop for correcting the feeding position of the steel coil is arranged on the top surface of the right pressing arm (42) and / or the right bottom plate (41).
8. The laser automatic cutting welder of claim 1, wherein: Scale lines are arranged on the left pressing plate (33) and / or the right pressing plate (43) along the length direction.