Longitudinal seam tailored blank laser welding equipment for manufacturing stainless steel carrier rocket storage tank

Abstract

The utility model provides longitudinal seam tailored blank laser welding equipment for manufacturing a stainless steel carrier rocket storage tank. The longitudinal seam tailored blank laser welding equipment comprises a supporting mechanism and a straight seam pressing mechanism, the supporting mechanism comprises an annular section guide wheel groove used for supporting a steel plate to be welded, the annular section guide wheel groove comprises at least one guide wheel groove, and each guide wheel groove comprises a guide wheel groove base and a guide wheel groove stand column. The straight seam pressing mechanism comprises a pressing mechanism base and a rack, and pressing blocks are arranged on the opposite side faces of the rack correspondingly. The two straight seam pressing mechanisms are used for pressing one of the two to-be-welded side edges of the to-be-welded steel plate correspondingly so that the two side edges of the to-be-welded steel plate can be in butt joint, positioned and welded. The tailor-welding equipment can improve the assembly precision of the steel plate to be welded so as to meet the requirement of laser welding.

Description

Technical Field

[0001] The utility model relates to the field of launch vehicle tanks, in particular to longitudinal seam laser welding equipment for manufacturing stainless steel launch vehicle tanks. Background Art

[0002] On April 20, 2023, SpaceX launched the "Starship" launch vehicle, marking the successful application of stainless steel materials in the tank of the SpaceX "Starship" rocket. Before the "Starship", there was a precedent for the use of stainless steel in the rocket manufacturing field to manufacture tanks. For example, the tank of the Atlas D was welded from 301 stainless steel; the second-stage tank of Delta was welded and manufactured with 410 stainless steel; the booster of Ariane 4 was welded with stainless steel. The stainless steel tank of the rocket is a thin-walled pressure vessel, and its barrel section is stacked by multiple short rings, with the characteristics of thin short ring wall thickness (usually only 1 to 3 mm), poor overall stiffness, and easy deformation. In addition, its barrel section needs to be welded from one or more steel plates, and the performance requirements of the welded joints are high.

[0003] In the manufacture of stainless steel tanks, manual TIG welding is usually used, but this welding method has a large heat input and low welding efficiency. Laser welding has great application potential in rocket tank welding due to its advantages such as high welding accuracy, small deformation and simple welding equipment, but it has high requirements for assembly accuracy.

[0004] In order to improve the assembly accuracy of steel plates to meet the requirements of laser welding, it is particularly important to design a longitudinal seam laser welding equipment for the manufacture of stainless steel launch vehicle tanks. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art and provide a longitudinal seam laser welding device for manufacturing a stainless steel carrier rocket tank.

[0006] The utility model provides a longitudinal seam laser welding device for manufacturing a stainless steel carrier rocket tank, comprising: a supporting mechanism and at least two correspondingly arranged straight seam pressing mechanisms; the supporting mechanism comprises an annular section guide wheel groove for supporting a steel plate to be welded, the annular section guide wheel groove comprises at least one guide wheel groove, the guide wheel groove comprises a guide wheel groove base and guide wheel groove upright posts correspondingly arranged on both sides of the guide wheel groove base; the straight seam pressing mechanism comprises a pressing mechanism base and a frame correspondingly arranged on both sides of the pressing mechanism base, and pressing blocks are respectively arranged on opposite sides of the frame; the guide wheel groove base is used to support the steel plate, and the guide wheel groove upright posts are used to limit the side of the steel plate; the two straight seam pressing mechanisms are respectively used to press one of the two side edges to be welded of the steel plate to be welded, wherein the pressing mechanism base is used to support the steel plate, the frame is used to limit the side of the steel plate, and the side of the steel plate is pressed by the pressing block, so that the two side edges of the steel plate to be welded are butted, positioned and welded to each other.

[0007] According to an embodiment of the utility model, a rotatable guide wheel groove support wheel is arranged between the guide wheel groove columns; the guide wheel groove support wheel is used to support the steel plate and moves by rotating to cooperate with the steel plate.

[0008] According to an embodiment of the utility model, a guide wheel groove lip is provided at the upper end of the guide wheel groove column to facilitate the steel plate to enter or move out of the guide wheel groove.

[0009] According to one embodiment of the utility model, the support mechanism also includes a straight segment guide wheel groove, and the straight segment guide wheel groove includes at least one guide wheel groove; the straight segment guide wheel groove is connected to the annular segment guide wheel groove to transport the straight steel plate to the annular segment guide wheel groove, and is curled through the annular segment guide wheel groove to form an arc-shaped steel plate to be welded.

[0010] According to one embodiment of the utility model, it also includes a guiding mechanism, which includes a guiding base and guiding brackets correspondingly arranged on both sides of the guiding base, and at least one group of rotatable guiding wheels are arranged on the opposite sides of the guiding brackets; the guiding base is used to support the steel plate; the guiding bracket is used to limit the side of the steel plate; the guiding wheel is used to press the two side surfaces of the steel plate, and guide the two side edges of the steel plate to be welded to move to the welding position for docking by rotating.

[0011] According to one embodiment of the utility model, it also includes a clamping mechanism arranged near the straight seam clamping mechanism, the clamping mechanism includes a clamping mechanism base and clamping columns correspondingly arranged on both sides of the clamping mechanism base, and a top plate is arranged on the side opposite to the clamping columns; the clamping mechanism base is used to support the steel plate, the clamping columns are used to limit the side of the steel plate, and the top plate is used to clamp the side of the steel plate to assist the straight seam clamping mechanism to clamp the steel plate close to the welding side.

[0012] According to one embodiment of the utility model, the clamping column is slidable relative to the clamping mechanism base, and the top plate is provided with an electromagnetic suction cup; when the electromagnetic suction cup is energized, the electromagnetic suction cup drives the top plate to make the clamping column slide relative to the clamping mechanism base and approach each other, so that the top plate clamps the side of the steel plate.

[0013] According to one embodiment of the utility model, the supporting mechanism is provided with an operating mechanism, and the operating mechanism includes an operating base and operating brackets correspondingly arranged on both sides of the operating base, and rotatable operating rollers are arranged between the operating brackets; the operating rollers are used to press the two side surfaces of the steel plate and drive the steel plate to move in the welding equipment by rotating.

[0014] According to an embodiment of the utility model, the operating mechanism is provided with a driving mechanism connected to the operating roller, and the driving mechanism is used for driving the operating roller to rotate.

[0015] According to one embodiment of the utility model, it also includes a welding system, which includes a three-coordinate slide, a three-coordinate bracket and a welding head; the welding head is fixedly arranged on the three-coordinate slide, and the three-coordinate slide can be slidably arranged on the three-coordinate bracket to drive the welding head to weld the two sides of the steel plate by moving.

[0016] According to the longitudinal seam laser welding equipment for manufacturing stainless steel launch vehicle tanks of the utility model, the shape of the short ring can be controlled by the annular segment guide wheel groove, and the butt seam can be pressed by the straight seam pressing mechanism to improve the assembly accuracy of the steel plates to be welded.

[0017] It should be understood that the above general description and the following specific embodiments are only exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings are a part of the specification of the present utility model, which illustrate exemplary embodiments of the present utility model. The attached drawings and the description of the specification are used to explain the principle of the utility model.

[0019] Figure 1It is a three-dimensional diagram of a longitudinal seam laser welding device for manufacturing a stainless steel launch vehicle tank according to an embodiment of the utility model;

[0020] Figure 2 It is a three-dimensional diagram of a guide wheel groove of an embodiment of the utility model;

[0021] Figure 3 It is a three-dimensional diagram of a straight seam pressing mechanism of an embodiment of the utility model;

[0022] Figure 4 It is a three-dimensional diagram of a guide mechanism of an embodiment of the utility model;

[0023] Figure 5 It is a three-dimensional diagram of a tightening mechanism of an embodiment of the utility model;

[0024] Figure 6 It is a three-dimensional diagram of the operating mechanism of one embodiment of the utility model;

[0025] Figure 7 It is a three-dimensional diagram of a welding system according to an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1-short ring workpiece; 2-support mechanism; 3-operating mechanism; 4-guide mechanism; 5-clamping mechanism; 6-straight seam clamping mechanism; 7-welding system; 8-guide wheel groove lip; 9-guide wheel groove column; 10-guide wheel groove support wheel; 11-guide wheel groove support; 12-guide wheel groove base; 13-guide wheel groove support leg; 14-drive motor; 15-operating roller; 16-second pressure sensor; 17-operating bracket; 18-operating base; 19-first guide wheel; 20-first pressure sensor; 21-second guide wheel; 22-guide bracket; 23-guide base; 24-electromagnetic suction cup; 25-top plate; 26-clamping column; 27-clamping mechanism base; 28-locking mechanism; 29-clamping cylinder; 30-limiting cylinder; 31-frame; 32-clamping mechanism base; 33-three-coordinate bracket; 34-three-coordinate slide; 35-welding head. DETAILED DESCRIPTION

[0028] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are used to illustrate the principles of the present invention, and are not configured to limit the present invention. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the sizes of some structural components or areas in the drawings may be enlarged for other structural components or areas to help understand the embodiments of the present invention.

[0029] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the utility model. In the description of the utility model, it should be noted that, unless otherwise specified, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In addition, the terms "include", "comprise", "have" or any other variations thereof are intended to cover non-exclusive inclusion, so that a structure or component including a series of elements includes not only those elements, but also other mechanical elements that are not explicitly listed or inherent in the structure or component. In the absence of more restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the article or device including the elements.

[0031] Spatially related terms such as "below", "beneath", "under", "low", "above", "on", "high", etc. are used to facilitate description to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, "one element is above / below another element" can mean that the two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and do not specifically refer to the meaning of order or sequence, and should not be regarded as limiting. Similar terms are used throughout the description to represent similar elements.

[0032] In the process of describing the present utility model below, in certain scene descriptions, only "rocket", "launch vehicle", "spacecraft", "space launch vehicle" or "missile" may be used. This is only for the convenience of description, and its connotation is not limited to the specific words used. Generally, the rocket of the present utility model includes both launch vehicles or space launch vehicles used to carry satellites or spacecraft or other probes, and various types of missiles, rockets and other weapons used to carry military payloads, as well as similar products that can send payloads into the air. When interpreting the above specific words, those skilled in the art shall not limit the rocket to only one of the launch vehicle or missile based on the specific words used to describe the scene, thereby narrowing the scope of protection of the present utility model.

[0033] For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention.

[0034] Figure 1 It is a three-dimensional diagram of a longitudinal seam laser welding device for manufacturing a stainless steel launch vehicle tank according to an embodiment of the utility model; Figure 2 It is a three-dimensional diagram of a guide wheel groove of an embodiment of the utility model; Figure 3 It is a three-dimensional diagram of a straight seam pressing mechanism of an embodiment of the utility model; Figure 4 It is a three-dimensional diagram of a guide mechanism of an embodiment of the utility model; Figure 5 It is a three-dimensional diagram of a tightening mechanism of an embodiment of the utility model; Figure 6 It is a three-dimensional diagram of the operating mechanism of one embodiment of the utility model; Figure 7 It is a three-dimensional diagram of a welding system according to an embodiment of the utility model.

[0035] like Figure 1-3 As shown, the utility model provides a longitudinal seam laser welding device for manufacturing a stainless steel launch vehicle tank, comprising: a support mechanism 2 and at least two corresponding straight seam clamping mechanisms 6. The support mechanism 2 includes an annular guide wheel groove for supporting a steel plate to be welded, the annular guide wheel groove includes at least one guide wheel groove, the guide wheel groove includes a guide wheel groove base 12 and guide wheel groove columns 9 correspondingly arranged on both sides of the guide wheel groove base 12. The straight seam clamping mechanism 6 includes a clamping mechanism base 32 and a frame 31 correspondingly arranged on both sides of the clamping mechanism base 32, and clamping blocks are respectively arranged on opposite sides of the frame 31. The guide wheel groove base 12 is used to support the steel plate, and the guide wheel groove column 9 is used to limit the side of the steel plate. The two straight seam pressing mechanisms 6 are respectively used to press one of the two sides to be welded of the steel plate to be welded, wherein the pressing mechanism base 32 is used to support the steel plate, the frame 31 is used to limit the side of the steel plate, and the pressing block is used to press the side of the steel plate so that the two sides of the steel plate to be welded can be butt-jointed, positioned and welded to each other.

[0036] Specifically, the development trend of launch vehicle technology in the future will focus on improving performance, reducing costs, improving reliability and reusability, which brings new challenges to the manufacturing process of tanks. In terms of stainless steel tank applications, the largest usage and usage ratio is SpaceX's "Starship" launch vehicle. Most of the rocket body of "Starship" is made of 304L stainless steel, which is a common commercially available cold-rolled stainless steel. It has obvious advantages in improving performance, reducing costs, improving reliability and reusability. The stainless steel short ring workpiece 1 is a key component of the launch vehicle tank, and its diameter is usually 3m to 10m and the wall thickness is usually 1mm to 3mm. Laser welding has great application prospects in the welding of rocket tank short barrels, but due to the high assembly accuracy requirements of the laser welding process, there is no equipment for laser welding of rocket tank short barrels on the market.

[0037] The welding equipment provided in this embodiment can control the shape of the short ring through the annular segment guide wheel groove, and press the joint through the straight seam clamping mechanism, and finally control the gap and misalignment of the joint to meet the requirements of laser welding. The welding equipment of the present application solves the problem of unstable manual welding, improves production efficiency, and improves the welding quality of the product. The equipment can be used to realize the longitudinal seam assembly of one or more rectangular stainless steel plates to obtain a short ring with a certain height and diameter by laser welding the longitudinal seam. The welding equipment can also adjust the diameter of the annular segment guide wheel groove to be compatible with the welding of short rings of different diameters, and has stronger expandability, thereby improving the compatibility of the equipment.

[0038] For example, when using this tailor-made welding equipment to weld short-ring stainless steel plates, the butt assembly accuracy can be greatly improved, ensuring that the butt gap of the entire straight longitudinal seam is less than 0.1mm. After testing, the strength of the short ring produced is better than that of the short ring produced by stack welding and resistance welding at the same volume, thus making the most of the strength characteristics of stainless steel materials. In addition, the tailor-made welding equipment adopts vertical longitudinal seam welding, which is more suitable for longitudinal seam welding and barrel section forming of thin-walled short cylinders than lying welding.

[0039] According to one embodiment of the utility model, a guide wheel groove support leg 13 can be provided on the lower end surface of the guide wheel groove base 12, and the guide wheel groove support leg 13 can be fixedly connected to the ground embedded parts (such as bolted connection) and support the guide wheel groove base 12.

[0040] According to an embodiment of the utility model, a rotatable guide wheel groove support wheel 10 is arranged between the guide wheel groove columns 9. The guide wheel groove support wheel 10 is used to support the steel plate and rotate to cooperate with the steel plate to move.

[0041] In this embodiment, the guide wheel groove column 9 can be provided with a guide wheel groove support 11, and the guide wheel groove support 11 is used to install a rotatable guide wheel groove support wheel 10.

[0042] According to an embodiment of the utility model, a guide wheel groove lip 8 is provided at the upper end of the guide wheel groove column 9 to facilitate the steel plate to enter or move out of the guide wheel groove.

[0043] The welding equipment provided in this embodiment, through the lip of the guide wheel groove, makes it easier for the steel plate to fall between the correspondingly arranged guide wheel groove columns (such as on the guide wheel groove support wheel) when loading, and can more conveniently lift out the welded short ring smoothly to avoid scratches on the short ring.

[0044] The guide wheel groove column, the guide wheel groove supporting wheel 10, the guide wheel groove support 11 and the guide wheel groove base 12 can all have good rigidity, and their combination into a guide wheel groove can support and guide the stainless steel incoming material.

[0045] According to an embodiment of the utility model, the annular guide wheel groove can be evenly provided with multiple guide wheel grooves, and the multiple guide wheel grooves form a complete annular structure. That is, the guide wheel groove columns on the radial inner side of the multiple guide wheel grooves and the guide wheel groove columns on the radial outer side respectively form a complete annular structure to curl or limit the steel plate to be welded.

[0046] In this embodiment, the guide wheel groove columns on the radial inner side of the multiple guide wheel grooves can be integrally formed, and the guide wheel groove columns on the radial outer side of the multiple guide wheel grooves can be integrally formed.

[0047] Furthermore, the guide wheel groove column is provided with axial reinforcing ribs to enhance the strength of the guide wheel groove column.

[0048] According to an embodiment of the utility model, in addition to the annular guide wheel groove, the support mechanism 2 also includes a straight guide wheel groove, and the straight guide wheel groove includes at least one guide wheel groove. The straight guide wheel groove is butted with the annular guide wheel groove to transport the straight steel plate to the annular guide wheel groove, and is curled through the annular guide wheel groove to form an arc-shaped steel plate to be welded.

[0049] In this embodiment, the straight section guide wheel groove is mainly used for loading stainless steel plates, and the annular section guide wheel groove is mainly used for forming short rings.

[0050] According to an embodiment of the utility model, the pressing block of the straight seam pressing mechanism can be connected to the frame through a pressing cylinder 29, and the pressing cylinder 29 can be a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, etc. For example, the pressing block can also be pressed against the steel plate manually.

[0051] In this embodiment, multiple groups of clamping cylinders and clamping blocks can be provided (one clamping cylinder can correspond to one clamping block), and multiple groups of clamping cylinders can be provided in the middle of the frame, covering the steel plate butt joint and arc-starting plate (equipment for auxiliary welding) from top to bottom. Multiple groups of clamping cylinders can be controlled in three parts, the top part is used to clamp the upper arc-starting plate, the bottom part is used to clamp the lower arc-starting plate, and the rest is used to clamp the steel plate butt joint. When the stainless steel plates are butt-jointed at the weld and the gap required for laser welding is met, the clamping cylinder is actuated, and the clamping block clamps the stainless steel plate butt joint. The clamping block can maintain a certain distance from the weld to ensure that it does not interfere with the weld. When it is necessary to clamp the steel plate butt joint, for example, it can be clamped in a bottom-up order. The tailored welding equipment can eliminate the misalignment deformation of the butt joint and improve the welding quality of the barrel section by clamping the steel plate with the clamping block. For example, the clamping block can be made of softer copper.

[0052] According to one embodiment of the utility model, a locking mechanism 28 can be set at the upper end of the frame corresponding to the two sides of the clamping mechanism base 32. The locking mechanism 28 is used to lock the corresponding frames to increase the overall rigidity of the frame and reduce the impact of the clamping block (or clamping cylinder) on the verticality of the frame when clamping the steel plate.

[0053] According to an embodiment of the utility model, a boss can be arranged between the frames, and a groove is arranged on the boss to assist in aligning the steel plates to be welded up and down. The side edge of the steel plate to be welded is placed in the groove, and the height of the lower end of the straight seam is aligned through the groove. The boss can be arranged on the base of the clamping mechanism and can be designed as an adjustable reference surface to ensure that the bottom heights of the two side edges of the steel plate to be welded are consistent.

[0054] Furthermore, the opposite sides of the frame can be provided with limit cylinders 30 respectively to limit the misalignment of the weld in the thickness direction of the steel plate and to pre-position the installation and pressing of the upper arc-starting plate. The limit cylinder can be provided with a pressing plate to press the upper arc-starting plate through the pressing plate. The limit cylinder can automatically adjust the pressing plate according to the thickness of the steel plate to be welded (for example, the position of the pressing plate is adjusted by extending and retracting the limit cylinder) and push the pressing plate to the working position. For example, the limit cylinder can be an electric cylinder.

[0055] like Figure 4 As shown, according to an embodiment of the utility model, in addition to the support mechanism 2 and the straight seam pressing mechanism 6, the tailored welding equipment also includes a guide mechanism 4. The guide mechanism 4 includes a guide base 23 and guide brackets 22 correspondingly arranged on both sides of the guide base 23, and at least one set of rotatable guide wheels is arranged on the opposite sides of the guide bracket 22. The guide base 23 is used to support the steel plate. The guide bracket 22 is used to limit the side of the steel plate. The guide wheel is used to press the two side surfaces of the steel plate, and guide the two side edges of the steel plate to be welded to move to the welding position for docking by rotating.

[0056] In this embodiment, the upper end and the lower end of the guide bracket may be provided with a first guide wheel 19 and a second guide wheel 21, respectively. The first guide wheel 19 and the second guide wheel 21 may be driven by independent motors, respectively, and may rotate forward or reversely to load or transport the steel plate. The guide base 23 may provide a rigid foundation for the first guide wheel 19 and the second guide wheel 21. The tailored welding equipment may guide the steel plate to the welding position for welding through the guide wheels.

[0057] Furthermore, a first pressure sensor 20 may be provided on the side opposite to the corresponding guide bracket, and the first pressure sensor is used to detect the pressing force between the guide wheel and the steel plate in real time. The guide bracket may be arranged to be slidable relative to the guide base, and the position of the guide bracket may be adjusted according to the value of the first pressure sensor to control the pressing force between the guide wheel and the steel plate.

[0058] like Figure 5 As shown, according to an embodiment of the utility model, in addition to the support mechanism 2 and the straight seam pressing mechanism 6, the tailored welding equipment also includes a clamping mechanism 5 arranged near the straight seam pressing mechanism 6. The clamping mechanism 5 includes a clamping mechanism base 27 and clamping columns 26 correspondingly arranged on both sides of the clamping mechanism base 27, and a top plate 25 is arranged on the side opposite to the clamping columns 26. The clamping mechanism base 27 is used to support the steel plate, the clamping columns 26 are used to limit the side of the steel plate, and the top plate 25 is used to clamp the side of the steel plate, so as to assist the straight seam pressing mechanism 6 to perform auxiliary clamping on the steel plate near the welding side.

[0059] In this embodiment, the clamping mechanism can be used to provide radial (i.e., radial direction of the annular guide wheel groove) clamping force to the weld seam of the stainless steel plate before welding, so as to preliminarily control the gap and misalignment of the butt joint.

[0060] According to an embodiment of the utility model, the pressing column 26 is slidable relative to the pressing mechanism base 27, and the top plate 25 is provided with an electromagnetic suction cup 24. When the electromagnetic suction cup 24 is energized, the electromagnetic suction cup 24 drives the top plate 25 to move toward each other so that the pressing column 26 slides relative to the pressing mechanism base and approaches each other, so that the top plate 25 presses the side of the steel plate.

[0061] In this embodiment, the clamping column can be evenly provided with multiple (e.g., 2 to 4) top plates and corresponding electromagnetic suction cups to evenly press near the linear weld so that the steel plate is evenly stressed. When the electromagnetic suction cup is powered on and closed, the top plate presses the steel plate to prevent the steel plate from slipping under the pressure of the top plate. The clamping column and the base of the clamping mechanism can be connected by a track, and the clamping column can move along the track to adjust its position relative to the base.

[0062] According to an embodiment of the utility model, the bracket part used to connect the top plate and the clamping column can adopt an "eight-shaped" design to facilitate equipment maintenance.

[0063] like Figure 6 As shown, according to one embodiment of the utility model, the support mechanism is provided with a running mechanism 3, and the running mechanism 3 includes a running base 18 and running brackets 17 correspondingly arranged on both sides of the running base 18, and a rotatable running roller 15 is arranged between the running brackets 17. The running roller 15 is used to press the two sides of the steel plate and drive the steel plate to move in the tailored welding equipment by rotating.

[0064] In this embodiment, the support mechanism can be provided with multiple operating mechanisms, for example, one operating mechanism is provided for the straight segment guide wheel groove, and two operating mechanisms are provided for the annular segment guide wheel groove. The operating mechanism can be used to provide driving force for the loading of the steel plate and the position transfer of the short ring during the welding process, and cooperate with the support mechanism to realize the automation of loading and rotation.

[0065] Furthermore, a second pressure sensor 16 may be provided on the side opposite to the corresponding operating bracket, and the second pressure sensor is used to detect the pressing force between the operating roller and the steel plate in real time. The operating bracket 17 may be provided to be slidable relative to the operating base 18, and the position of the operating bracket may be adjusted according to the value of the second pressure sensor to control the pressing force between the operating roller and the steel plate.

[0066] According to an embodiment of the present utility model, the operating mechanism 3 is provided with a driving mechanism connected to the operating roller 15 , and the driving mechanism is used to drive the operating roller 15 to rotate.

[0067] In this embodiment, the driving mechanism can be a driving motor 14 arranged on the running bracket (e.g., it can be arranged on the upper end of the running bracket), and the driving motor is connected to the running roller to drive the running roller to rotate. The running roller drives the steel plate or the short ring to move by the friction between the steel plate and the steel plate. For example, the driving motor can be a variable frequency motor.

[0068] like Figure 7 As shown, according to an embodiment of the utility model, in addition to the support mechanism 2 and the straight seam pressing mechanism 6, the tailored welding equipment also includes a welding system 7. The welding system 7 includes a three-coordinate slide 34, a three-coordinate bracket 33 and a welding head 35. The welding head 35 is fixedly arranged on the three-coordinate slide 34, and the three-coordinate slide 34 is slidably arranged on the three-coordinate bracket 33, so as to drive the welding head 35 to weld the two sides of the steel plate by moving.

[0069] In this embodiment, the welding head can be a laser welding gun head. The frame can provide support for other components (including the welding system), and the base of the clamping mechanism can be fixedly connected to the ground through the legs. For example, the tangential direction of the annular segment guide wheel groove is set to the X-axis, the radial direction is set to the Y-axis, and the direction parallel to the joint is set to the Z-axis. The speed of the three-axis slide in the Z-axis direction (i.e., the automatic welding direction) can be continuously adjusted from 0 to 2000 mm / s, and the speed fluctuation does not exceed ±1%.

[0070] The welding system can adopt three-axis linkage, in which the stroke in the X-axis direction (i.e., the weld width direction) is not less than 200mm, and the repeat positioning accuracy is high, not less than 0.05mm. The welding system can also be equipped with a weld monitoring CCD to facilitate viewing the assembly condition of the seam, trajectory deviation, etc. For example, the three-axis trajectory of the welding head can be programmed using manual teaching. In one embodiment, after long-spacing two-point teaching, the generated straight line trajectory is required to deviate from the theoretical straight line by <0.1mm. The welding equipment realizes the control of the laser defocus amount through a three-coordinate slide, and finally realizes the automated control of welding. For example, the welding system can be a robot welding system. The welding equipment also has the advantages of simple operation, automation of key links, high weld quality, and good consistency of welded products.

[0071] According to an embodiment of the present invention, in addition to the supporting mechanism 2 and the straight seam pressing mechanism 6, the tailor-made welding equipment further comprises a rolling device to roll the steel plate or the seam to be welded of the steel plate.

[0072] In this embodiment, before the steel plates to be welded are assembled with longitudinal seams, the steel plates or the sides to be welded of the steel plates can be rolled. The welding equipment of the present application can further improve the quality of the welds by adding a weld rolling device.

[0073] In one embodiment of the present application, taking welding a steel plate into a short ring as an example, the welding process of the tailor-made welding equipment is as follows:

[0074] S01: hoist the steel plate to the straight section guide wheel groove, start the operating mechanism, make the steel plate enter the annular section guide wheel groove, complete the loading of the steel plate, and the steel plate can be bent into a ring shape after entering the annular guide wheel groove;

[0075] S02: The operating mechanism continues to work, so that the steel plate enters the guide mechanism, and the first guide wheel and the second guide wheel rotate forward, so that the steel plate moves to the clamping mechanism; after the electromagnetic suction cup of the clamping mechanism is powered on and closed, the top plate presses the steel plate, and the two sides of the steel plate to be welded are butted, and under the action of the two sets of pressure from the guide mechanism and the clamping mechanism, the butt joint basically meets the requirements of laser welding;

[0076] S03: Place two arc-starting plates at the upper and lower ends of the butt joint respectively and align them at the weld; the clamping cylinders of the uppermost and lowermost parts of the straight seam clamping mechanism are started first to clamp the upper and lower arc-starting plates, and the remaining clamping cylinders are then started to clamp the butt joint, completing the assembly work of the butt joint;

[0077] S04: Adjust the three-coordinate slide on the X-axis to align the laser welding gun head with the joint in the horizontal direction; adjust the three-coordinate slide on the Y-axis to make the defocus amount of the laser meet the requirements; adjust the three-coordinate slide on the Z-axis to determine the positions of the laser arc starting and ending; start the laser automatic welding program to complete the welding of the joint.

[0078] The above-mentioned embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0079] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A longitudinal seam laser welding equipment for manufacturing stainless steel launch vehicle tanks, characterized in that: include: A supporting mechanism and at least two corresponding straight seam pressing mechanisms; The support mechanism includes an annular guide wheel groove for supporting the steel plate to be welded, the annular guide wheel groove includes at least one guide wheel groove, the guide wheel groove includes a guide wheel groove base and guide wheel groove columns correspondingly arranged on both sides of the guide wheel groove base; the straight seam pressing mechanism includes a pressing mechanism base and a frame correspondingly arranged on both sides of the pressing mechanism base, and pressing blocks are respectively arranged on opposite sides of the frame; The guide wheel groove base is used to support the steel plate, and the guide wheel groove column is used to limit the side of the steel plate; the two straight seam clamping mechanisms are respectively used to clamp one of the two sides to be welded of the steel plate to be welded, wherein the clamping mechanism base is used to support the steel plate, and the frame is used to limit the side of the steel plate, and the clamping block clamps the side of the steel plate so that the two sides of the steel plate to be welded can be butt-jointed, positioned and welded to each other.

2. The tailor-made welding equipment according to claim 1, characterized in that: A rotatable guide wheel groove support wheel is arranged between the guide wheel groove columns; the guide wheel groove support wheel is used to support the steel plate and moves by rotating to cooperate with the steel plate.

3. The tailor-made welding equipment according to claim 1, characterized in that: A guide wheel groove lip is arranged at the upper end of the guide wheel groove column to facilitate the steel plate to enter or move out of the guide wheel groove.

4. The tailor-made welding equipment according to claim 1, characterized in that: The support mechanism also includes a straight segment guide wheel groove, which includes at least one guide wheel groove; the straight segment guide wheel groove is connected to the annular segment guide wheel groove to transport the straight steel plate to the annular segment guide wheel groove, and is curled through the annular segment guide wheel groove to form an arc-shaped steel plate to be welded.

5. The tailor-made welding equipment according to claim 1, characterized in that: It also includes a guide mechanism, which includes a guide base and guide brackets correspondingly arranged on both sides of the guide base, and at least one set of rotatable guide wheels is arranged on opposite sides of the guide brackets; The guide base is used to support the steel plate; the guide bracket is used to limit the side of the steel plate; the guide wheel is used to press the two side surfaces of the steel plate and guide the two side edges of the steel plate to be welded to the welding position for docking by rotating.

6. The tailor-made welding equipment according to claim 1, characterized in that: It also includes a tightening mechanism arranged near the straight seam tightening mechanism, the tightening mechanism includes a tightening mechanism base and tightening columns correspondingly arranged on both sides of the tightening mechanism base, and a top plate is arranged on the side opposite to the tightening columns; The base of the clamping mechanism is used to support the steel plate, the clamping column is used to limit the side of the steel plate, and the top plate is used to clamp the side of the steel plate to assist the straight seam clamping mechanism in clamping the steel plate close to the welding side.

7. The tailor-made welding equipment according to claim 6, characterized in that: The clamping column is slidable relative to the clamping mechanism base, and the top plate is provided with an electromagnetic suction cup; when the electromagnetic suction cup is energized, the electromagnetic suction cup drives the top plate to make the clamping column slide relative to the clamping mechanism base and approach each other, so that the top plate clamps the side of the steel plate.

8. The tailor-made welding equipment according to claim 1, characterized in that: The supporting mechanism is provided with a running mechanism, which includes a running base and running brackets correspondingly arranged on both sides of the running base, and rotatable running rollers are arranged between the running brackets; the running rollers are used to press the two side surfaces of the steel plate and drive the steel plate to move on the welding equipment by rotating.

9. The tailor-made welding equipment according to claim 8, characterized in that: The operating mechanism is provided with a driving mechanism connected with the operating roller, and the driving mechanism is used for driving the operating roller to rotate.

10. The tailor-made welding equipment according to claim 1, characterized in that: It also includes a welding system, which includes a three-coordinate slide, a three-coordinate bracket and a welding head; the welding head is fixedly arranged on the three-coordinate slide, and the three-coordinate slide can be slidably arranged on the three-coordinate bracket to drive the welding head to weld the two sides of the steel plate by moving.

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