Tailor-welding type tool for scalloped segment of stainless steel rocket storage tank

Abstract

The utility model provides a tailor-welding type tool for a scalloped segment section of a stainless steel rocket storage tank, which comprises a scalloped segment rotary supporting assembly, a scalloped segment inner tube, a lifting shaft and a scalloped segment outer pressing part, and the scalloped segment rotary supporting assembly is rotatably arranged along the circumferential direction and is used for supporting the scalloped segment inner tube and the bottom of a scalloped segment; the scalloped segment outer pressing part is used for pressing the scalloped segments to scalloped segment inner tubes from the outer side faces of the scalloped segments; a scalloped segment inner tube lower pressing mechanism is arranged on the scalloped segment rotary supporting assembly in the circumferential direction of the scalloped segment rotary supporting assembly, and the scalloped segment inner tube lower pressing mechanism is used for pressing and attaching the bottoms of scalloped segments to scalloped segment inner tubes; the lifting shaft is provided with an upper pressing mechanism base; the upper pressing mechanism base is provided with a scalloped segment upper pressing mechanism in the circumferential direction of the upper pressing mechanism base, and the scalloped segment upper pressing mechanism is used for pressing the tops of scalloped segments to the upper pressing mechanism base. According to the tailor-welding type tool, the shape and size of the welded scalloped segment can be controlled, and the cutting and welding assembly precision of the scalloped segment is improved.

Description

Technical Field

[0001] The utility model relates to the field of rocket tanks, in particular to a welding tool used for melon-shaped segments of stainless steel rocket tanks. Background Art

[0002] In the existing large-diameter stainless steel rocket tank manufacturing process, there are several major difficulties in manufacturing the melon-shaped segments of the stainless steel tank. First, the secondary clamping is difficult to control: the melon segment itself is a stainless steel plate with an elliptical arc shape. The plate is thin and has low rigidity. The secondary clamping is prone to deformation, which causes the gap of the assembly weld to change, resulting in reduced welding accuracy. Second, the dimensional accuracy of the single melon segment and the dimensional accuracy of the melon segment butt welding assembly are high: the stainless steel head is large in size, and the melon segment plate is very thin, so the melon segment shape retention is high. Third, the manufacturing process is complicated. Therefore, the welding of the melon segment and the head can usually only be done by online cutting and online welding.

[0003] In order to streamline the manufacturing process of rocket tanks and improve welding accuracy, it is particularly important to design a welding tool for the melon-shaped segments of stainless steel rocket tanks. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a welding tool for the melon-shaped segments of a stainless steel rocket tank.

[0005] The utility model provides a welded tooling for the melon segment of a stainless steel rocket tank, comprising: a melon segment rotating support assembly, a melon segment inner tube, a lifting shaft and a melon segment outer pressing component, wherein the melon segment rotating support assembly can be rotatably arranged along the circumference, and is used to support the melon segment inner tube and the melon segment bottom; the melon segment inner tube is used to support the inner side of the melon segment; the melon segment outer pressing component is used to press the melon segment to the melon segment inner tube or release the melon segment from the outer side of the melon segment; the melon segment rotating support assembly is provided with a melon segment inner tube lower pressing mechanism along its circumferential direction, The lower pressing mechanism of the melon slice inner tube is used to press the bottom of the melon slice tightly against the melon slice inner tube or release the melon slice; the lifting shaft is arranged in the middle of the melon slice rotating support assembly, and the lifting shaft is provided with an upper pressing mechanism base; the upper pressing mechanism base is provided with a melon slice upper pressing mechanism along its circumferential direction, and the melon slice upper pressing mechanism is used to press the top of the melon slice against the upper pressing mechanism base or release the melon slice; the melon slice outer pressing component, the melon slice inner tube lower pressing mechanism, the melon slice upper pressing mechanism and the melon slice inner tube cooperate with each other to position the melon slice and weld the longitudinal seam.

[0006] According to one embodiment of the present invention, the melon slice inner tube lower pressing mechanism includes a lower pressing drive cylinder and a lower pressing block, and the lower pressing drive cylinder is extended and retracted to drive the lower pressing block toward or away from the bottom of the melon slice.

[0007] According to one embodiment of the present invention, the melon slice upper pressing mechanism includes an upper pressing drive cylinder and an upper pressing block, and the upper pressing drive cylinder drives the upper pressing block toward or away from the top of the melon slice by telescoping.

[0008] According to one embodiment of the present invention, a melon slice outer tire upper pressing mechanism is further provided on the upper pressing mechanism base along its circumferential direction, and the melon slice outer tire upper pressing mechanism is used to press the upper part of the melon slice outer pressing component to the upper pressing mechanism base.

[0009] According to one embodiment of the present invention, it also includes a support base, and the melon slice rotation support assembly is arranged on the support base; the melon slice rotation support assembly can rotate around the circumferential direction of the support base to drive the melon slice inner tube and the melon slice to rotate.

[0010] According to one embodiment of the present invention, the lifting shaft is provided with a melon slice back protection mechanism that can rotate around it; near the melon slice inner tube, the melon slice back protection mechanism is provided with an arc groove that is adapted to the melon slice longitudinal seam; the arc groove is used to fill with protective gas to provide protective gas to the melon slice longitudinal seam during welding.

[0011] According to one embodiment of the present invention, the melon segment inner tube includes an inner tube frame and an inner tube outer mold, and the inner tube frame is used to support the inner tube outer mold; the inner tube outer mold includes a melon segment bottom cylindrical section, a melon segment transition section and a melon segment elliptical upper section, and the melon segment bottom cylindrical section, the melon segment transition section and the melon segment elliptical upper section are connected in sequence up and down to control the inner side profile of the melon segment by supporting the inner side surface of the melon segment.

[0012] According to one embodiment of the present invention, the melon slice upper pressing mechanism also includes an upper pressing mounting base and an upper pressing lever, and the upper pressing mounting base is arranged on the upper pressing mechanism base; in the vertical direction, the upper pressing mounting base is provided with an upper pressing drive cylinder; the two ends of the upper pressing lever are respectively connected to the upper pressing drive cylinder and the upper pressing block, and the upper pressing drive cylinder is extended and retracted, and drives the upper pressing block toward or away from the top of the melon slice through the upper pressing lever.

[0013] According to one embodiment of the present invention, baffles are respectively provided on both sides of the inner tube outer mold; the baffles are used to protect the inner tube outer mold when cutting or welding melon slices.

[0014] According to one embodiment of the present invention, a laser cutting groove is provided on the bottom cylindrical section of the melon slice of the inner tube outer mold along the circumferential direction of the tailor-welded tooling to cut the lower end of the melon slice along the laser cutting groove.

[0015] According to the utility model, the welding tooling for the melon-peg segments of a stainless steel rocket tank can make the melon segments fit better with the melon-peg inner tube through the cooperation of the lower pressing mechanism of the melon-peg inner tube, the upper pressing mechanism of the melon-peg, the outer pressing component of the melon-peg and the melon-peg inner tube, so as to control the shape and size of the welded melon-peg segments and improve the cutting and welding assembly accuracy of the melon segments.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are part of the specification of the present utility model, which illustrate exemplary embodiments of the present utility model. The accompanying drawings and the description of the specification are used to explain the principle of the utility model.

[0018] Figure 1 This is a perspective view of a tailor-welded tooling for a stainless steel rocket tank melon segment according to one embodiment of the present invention;

[0019] Figure 2 This is a perspective view of a tailor-welded tooling for a stainless steel rocket tank melon segment according to one embodiment of the present invention;

[0020] Figure 3 This is a perspective view of a tailor-welded tooling for a stainless steel rocket tank melon segment according to one embodiment of the present invention;

[0021] Figure 4 This is a three-dimensional diagram of a lower pressing drive cylinder according to an embodiment of the present invention;

[0022] Figure 5 This is a three-dimensional diagram of a melon slice upper pressing mechanism according to an embodiment of the present invention;

[0023] Figure 6 This is a three-dimensional diagram of a melon slice rotating support assembly according to an embodiment of the present invention;

[0024] Figure 7 It is a three-dimensional diagram of an inner tube frame according to one embodiment of the present invention;

[0025] Figure 8 It is a three-dimensional diagram of an inner tube outer mold according to one embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1-1 Melon slice inner tube; 1-2 Melon slice upper pressing mechanism; 1-3 Melon slice inner tube lower pressing mechanism; 1-6 Support base; 1-7 Support leg; 1-13 Melon slice back protection mechanism; 1-14 Upper pressing mechanism base; 1-16 Lifting shaft; 1-1-1 Inner tube frame; 1-1-2 Inner tube outer mold; 1-1-2-1 Melon slice bottom cylindrical section; 1-1-2-2 Positioning pin; 1-1-2-3 Melon slice transition section; 1-1-2-4 oval upper section of melon slice; 1-1-2-5 baffle; 1-1-2-6 laser cutting groove; 1-2-1 upper clamping mounting base; 1-2-2 upper clamping drive cylinder; 1-2-3 upper clamping block; 1-2-4 upper clamping lever; 1-3-1 lower clamping drive cylinder; 1-3-2 lower clamping block; 1-5-1 rotating cylindrical meshing gear; 1-5-2 rotary mechanism; 2- melon slice outer clamping component. 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 more clear, 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 dimensions of some structural components or areas in the drawings may be enlarged for other structural components or areas to facilitate understanding of the embodiments of the present invention.

[0029] The directional words that appear in the following description refer to the directions shown in the drawings and do not limit the specific structure of the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise specified, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

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

[0031] Spatially relative terms such as "below," "beneath," "under," "low," "above," "on," "high," and the like are used to facilitate description to explain the positioning of one element relative to a second element, indicating that these terms are intended to encompass different orientations of the device in addition to those shown in the figures. Additionally, for example, "one element is above / below another element" may indicate that the two elements are in direct contact, or may indicate that there are other elements between the two elements. Furthermore, terms such as "first," "second," and the like are also used to describe various elements, regions, portions, and the like, and do not specifically refer to an order or sequence, and should not be considered limiting. Similar terms are used throughout the description to indicate similar elements.

[0032] In the following description of the present invention, in certain scenarios, only the terms "rocket", "carrier rocket", "spacecraft", "space carrier" 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 speaking, the rockets of the present invention include carrier rockets or space carriers used to carry satellites, spacecraft or other probes, as well as 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-mentioned specific terms, those skilled in the art shall not limit the rocket to only one of the carrier rockets or missiles based on the specific words used to describe the scenario, thereby narrowing the scope of protection of the present invention.

[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 illustrating examples of the present invention.

[0034] Figure 1 This is a perspective view of a tailor-welded tooling for a stainless steel rocket tank melon segment according to one embodiment of the present invention; Figure 2 This is a perspective view of a tailor-welded tooling for a stainless steel rocket tank melon segment according to one embodiment of the present invention; Figure 3 This is a perspective view of a tailor-welded tooling for a stainless steel rocket tank melon segment according to one embodiment of the present invention; Figure 4 This is a three-dimensional diagram of a lower pressing drive cylinder according to an embodiment of the present invention; Figure 5 This is a three-dimensional diagram of a melon slice upper pressing mechanism according to an embodiment of the present invention; Figure 6 This is a three-dimensional diagram of a melon slice rotating support assembly according to an embodiment of the present invention; Figure 7 It is a three-dimensional diagram of an inner tube frame according to one embodiment of the present invention; Figure 8 It is a three-dimensional diagram of an inner tube outer mold according to one embodiment of the present invention.

[0035] like Figure 1 、2 As shown in Figure 3, the utility model provides a welded tooling for the melon segment of a stainless steel rocket tank, comprising: a melon segment rotating support assembly, a melon segment inner tube 1-1, a lifting shaft 1-16, and a melon segment outer pressing component 2. The melon segment rotating support assembly is rotatable along the circumferential direction, and is used to support the melon segment inner tube 1-1 and the melon segment bottom. The melon segment inner tube 1-1 is used to support the inner side of the melon segment. The melon segment outer pressing component 2 is used to press the melon segment to the melon segment inner tube 1-1 or release the melon segment from the outer side of the melon segment. The melon segment rotating support assembly is provided with a melon segment inner tube lower pressing mechanism 1-3 along its circumferential direction, and the melon segment inner tube lower pressing mechanism 1-3 is used to press the melon segment bottom to the melon segment inner tube 1-1 or release the melon segment. The lifting shaft 1-16 is provided in the middle of the melon segment rotating support assembly, and the lifting shaft 1-16 is provided with an upper pressing mechanism base 1-14. The upper compression mechanism base 1-14 is provided with a melon segment upper compression mechanism 1-2 along its circumferential direction. The melon segment upper compression mechanism 1-2 is used to compress the top of the melon segment against the upper compression mechanism base 1-14 or release the melon segment. The melon segment outer compression component 2, the melon segment lower compression mechanism 1-3, the melon segment upper compression mechanism 1-2, and the melon segment inner tube 1-1 cooperate with each other to position the melon segment and weld the longitudinal seam.

[0036] The welded fixture of this embodiment can make the melon slices (especially the lower part of the melon slices) fit to the melon slice inner tube through the lower pressing mechanism of the melon slice inner tube, and can press the melon slices (especially the upper part of the melon slices) to the base of the upper pressing mechanism through the upper pressing mechanism of the melon slices. In combination with the outer pressing components of the melon slices, the melon slices can be better fitted to the melon slice inner tube, thereby improving the cutting and welding assembly accuracy of the melon slices. The welded fixture can better control the shape and size of the welded melon slice segments, prevent deformation of the melon slices, and improve weld performance. In addition, the welded fixture can complete cutting and welding of the melon slices with one clamping, avoiding deformation of the melon slices caused by secondary clamping of the melon slices. The welded fixture can be applied to the production of elliptical heads by online cutting and online welding (such as laser penetration welding).

[0037] In this embodiment, the end surface of the melon segment inner tube supporting the melon segment can be an arcuate surface that matches the inner surface of the melon segment. Multiple melon segment inner tubes can be provided along the circumference of the melon segment rotation support assembly, with each segment inner tube corresponding to each melon segment. For example, a melon segment ring made by welding 16 melon segments can be provided with 16 melon segment inner tubes.

[0038] Furthermore, a plurality of (for example, 16) supporting legs 1-7 are provided along the circumferential direction of the lower end surface of the supporting base 1-6, and the supporting legs 1-7 are used to support the supporting base 1-6.

[0039] According to one embodiment of the present invention, the upper clamping mechanism base 1-14 is rotatably connected to the lifting shaft 1-16, so that the melon slice inner tube can drive the melon slice to rotate around the lifting shaft 1-16 to complete the welding of the melon slice segment.

[0040] like Figure 4 As shown, according to one embodiment of the present invention, the melon slice inner tube lower clamping mechanism 1-3 includes a lower clamping drive cylinder 1-3-1 and a lower clamping block 1-3-2. The lower clamping drive cylinder 1-3-1 drives the lower clamping block 1-3-2 toward or away from the bottom of the melon slice by telescoping.

[0041] In this embodiment, the lower clamping block is used to compress the end surface of the melon segment and can be an arcuate surface that matches the outer surface of the melon segment. The melon segment rotation support assembly can be equipped with multiple melon segment inner tube lower clamping mechanisms 1-3 along its circumference. For example, three melon segment inner tube lower clamping mechanisms 1-3 can be provided for each melon segment to ensure that the lower portion of the melon segment fits better against the melon segment inner tube, ensuring assembly accuracy during cutting and welding.

[0042] like Figure 5 As shown, according to one embodiment of the present invention, the melon slice upper pressing mechanism 1-2 includes an upper pressing drive cylinder 1-2-2 and an upper pressing block 1-2-3. The upper pressing drive cylinder 1-2-2 drives the upper pressing block 1-2-3 toward or away from the top of the melon slice by telescoping.

[0043] In this embodiment, the upper clamping block is used to compress the end surface of the melon slice and can be an arcuate surface that matches the outer surface of the melon slice. Multiple melon slice upper clamping mechanisms 1-2 can be provided along the circumference of the upper clamping mechanism base 1-14. For example, two melon slice upper clamping mechanisms 1-2 can be provided for each melon slice to ensure that the upper portion of the melon slice fits better against the upper clamping mechanism base 1-14, ensuring assembly accuracy during cutting and welding.

[0044] According to one embodiment of the present invention, a melon slice outer tire upper pressing mechanism is further provided on the upper pressing mechanism base 1-14 along its circumferential direction, and the melon slice outer tire upper pressing mechanism is used to press the upper part of the melon slice outer pressing component 2 to the upper pressing mechanism base 1-14.

[0045] In this embodiment, the melon segment upper compression mechanism can have the same structure as the melon segment upper compression mechanism 1-2. This tailor-welded tooling further ensures assembly precision during melon segment cutting and welding. For each melon segment, the upper compression mechanism base 1-14 can be equipped with at least one melon segment upper compression mechanism. The melon segment upper compression mechanism can be spaced apart from the melon segment upper compression mechanism 1-2.

[0046] According to one embodiment of the present invention, in addition to the melon slice rotation support assembly, the melon slice inner tube 1-1, the lifting shaft 1-16, and the melon slice outer pressure member 2, the tailor-welded tooling further includes a support base 1-6, on which the melon slice rotation support assembly is mounted. The melon slice rotation support assembly can rotate about the circumference of the support base 1-6, thereby driving the melon slice inner tube 1-1 and the melon slices to rotate.

[0047] The tailor-made welding tooling of this embodiment can achieve welding of all the longitudinal seams of the melon slices by providing a melon slice rotating support assembly that can rotate around a support base, without moving the positions of the welding equipment and the cutting equipment, thereby ensuring the consistency of the weld quality.

[0048] like Figure 6 As shown, according to one embodiment of the present invention, the melon slice rotating support assembly includes a rotating cylindrical meshing gear 1-5-1 and a rotating mechanism 1-5-2. The rotating cylindrical meshing gear 1-5-1 and the rotating mechanism 1-5-2 are meshed. The rotating cylindrical meshing gear 1-5-1 is connected to the motor. When the motor is started, it drives the rotating cylindrical meshing gear 1-5-1 to drive the rotating mechanism 1-5-2 to move. The rotating mechanism 1-5-2 is used to support the melon slice inner tube 1-1 and the bottom of the melon slice, and drives the melon slice inner tube 1-1 and the melon slice to rotate circumferentially.

[0049] like Figure 1 As shown, according to one embodiment of the present invention, a melon slice back protection mechanism 1-13 is provided around a lifting shaft 1-16, which is rotatable thereabout. Near the melon slice inner tube 1-1, the melon slice back protection mechanism 1-13 is provided with an arcuate groove adapted to the longitudinal seam of the melon slice. The arcuate groove is filled with shielding gas to provide shielding gas to the longitudinal seam of the melon slice during welding.

[0050] In this embodiment, the melon slice back protection mechanism 1-13 can be rotatably arranged relative to the lifting shaft 1-16, which can achieve a 180° displacement of the melon slice back protection mechanism 1-13 relative to the melon slice inner tube 1-1 or the melon slice, so as to provide protective gas for the welding of each melon slice longitudinal seam.

[0051] like Figure 7 and 8 As shown, according to one embodiment of the present invention, a melon segment inner tube 1-1 includes an inner tube frame 1-1-1 and an inner tube outer mold 1-1-2. The inner tube frame 1-1-1 is used to support the inner tube outer mold 1-1-2. The inner tube outer mold 1-1-2 includes a melon segment bottom cylindrical section 1-1-2-1, a melon segment transition section 1-1-2-3, and a melon segment elliptical upper section 1-1-2-4. The melon segment bottom cylindrical section 1-1-2-1, the melon segment transition section 1-1-2-3, and the melon segment elliptical upper section 1-1-2-4 are connected in sequence from top to bottom to control the inner profile of the melon segment by supporting the inner side of the melon segment.

[0052] In this embodiment, the inner tube frame 1-1-1 is arranged on the melon slice rotating support assembly to rotate circumferentially with the melon slice rotating support assembly to achieve the cutting and welding of the melon slices. Multiple melon slice inner tubes are combined to form an annular structure that is compatible with the melon slice segments to control the shape and dimensional accuracy of the welded melon slice segments. The melon slice bottom cylindrical section 1-1-2-1 can be made of metal material. The melon slice bottom cylindrical section 1-1-2-1 can be fixed to the inner tube frame 1-1-1 by screws or welding. The melon slice transition section 1-1-2-3 can be made of non-metallic materials, such as plastic, to reduce the overall weight of the welded tooling. The melon slice transition section 1-1-2-3 can be fixedly connected to the inner tube frame 1-1-1 by screws and screw holes. For example, the melon slice transition section 1-1-2-3 and the inner tube frame 1-1-1 are provided with four corresponding threaded holes, and the melon slice transition section 1-1-2-3 is fixed to the inner tube frame 1-1-1 by four screws. The oval upper section 1-1-2-4 of the melon segment can be made of metal material. The oval upper section 1-1-2-4 of the melon segment can be fixed on the inner tube skeleton 1-1-1 by screws or welding.

[0053] like Figure 5 As shown, according to one embodiment of the present invention, in addition to the upper clamping drive cylinder 1-2-2 and the upper clamping block 1-2-3, the melon slice upper clamping mechanism 1-2 also includes an upper clamping mounting base 1-2-1 and an upper clamping lever 1-2-4. The upper clamping mounting base 1-2-1 is arranged on the upper clamping mechanism base 1-14. In the vertical direction, the upper clamping mounting base 1-2-1 is provided with the upper clamping drive cylinder 1-2-2. The upper clamping lever 1-2-4 is connected to the upper clamping drive cylinder 1-2-2 and the upper clamping block 1-2-3 at both ends. The upper clamping drive cylinder 1-2-2 is extended and retracted, and the upper clamping block 1-2-3 is driven toward or away from the top of the melon slice through the upper clamping lever 1-2-4.

[0054] In this embodiment, when the upper clamping drive cylinder 1-2-2 is extended or retracted, the upper clamping block 1-2-3 can be driven toward or away from the top of the melon slice by the upper clamping lever 1-2-4 using the lever principle, thereby pressing the top of the melon slice to the upper clamping mechanism base 1-14 or releasing the melon slice to weld the longitudinal seam of the melon slice. For each melon slice, a plurality of melon slice upper clamping mechanisms 1-2 can be provided to better clamp the upper part of the melon slice to the upper clamping mechanism base 1-14 or the upper clamping mounting base 1-2-1, thereby ensuring the assembly accuracy of the melon slice cutting and welding. The upper clamping mounting base 1-2-1 is used to support or fit the support end surface of the upper part of the inner side surface of the melon slice, and can be an arcuate surface or an ellipsoidal surface that matches the upper part of the inner side surface of the melon slice. The upper pressing mounting base 1-2-1 is used to support or fit the supporting end surface of the upper part of the inner side of the melon slice, and is tangent to the end surface of the melon slice inner tube used to support the inner side of the melon slice, so that the connection between the upper pressing mounting base and the melon slice inner tube is adapted to the inner side of the melon slice, so as to better prevent the melon slice from being squeezed and deformed.

[0055] According to one embodiment of the present invention, the distance between the opposite end surfaces of two adjacent upper pressing mounting bases 1-2-1 can be 60 to 80 mm to avoid components such as arc grooves.

[0056] In this embodiment, the gap between two adjacent upper compression mounting bases 1-2-1 can provide clearance for other equipment. For example, it can provide clearance for rolling rollers, welding head shielding nozzles, or spot welding rolling wheels. The opposing end surfaces of the two adjacent upper compression mounting bases 1-2-1 can be parallel to each other.

[0057] like Figure 8 As shown, according to one embodiment of the present invention, baffles 1-1-2-5 are respectively provided on both sides of the inner tube outer mold 1-1-2. The baffles 1-1-2-5 are used to protect the inner tube outer mold 1-1-2 when cutting or welding melon slices.

[0058] In this embodiment, the baffle 1-1-2-5 can block the spatter generated when cutting or welding the melon slices. The baffle 1-1-2-5 can be made of copper. The baffle 1-1-2-5 can be fixedly connected to the inner tube outer mold 1-1-2 by screws.

[0059] like Figure 8 As shown, according to one embodiment of the present invention, a laser cutting groove 1-1-2-6 is provided on the bottom cylindrical section 1-1-2-1 of the melon slice of the inner tube outer mold 1-1-2 along the circumferential direction of the welded tooling to cut the lower end of the melon slice along the laser cutting groove 1-1-2-6.

[0060] In this embodiment, the laser cutting groove 1-1-2-6 can be set to a width of 20 to 40 mm and a groove depth of 30 mm.

[0061] According to one embodiment of the present invention, at least one positioning pin 1-1-2-2 is provided at the lower end of the inner tube outer mold 1-1-2 (e.g., the cylindrical section 1-1-2-1 at the bottom of the melon slice). The positioning pin 1-1-2-2 is used to dock with the lower end of the melon slice to position the melon slice.

[0062] The tailor-welded tooling of this embodiment can position the melon segments, assist in cutting and welding the longitudinal seams of the melon segments, and control the shape and dimensional accuracy of the melon segment segments.

[0063] The utility model provides a welding tool for the melon-shaped segments of a stainless steel rocket tank. The related drive cylinder equipment (such as the upper clamping drive cylinder 1-2-2, the lower clamping drive cylinder, etc.) can be a pneumatic cylinder, an electric cylinder, etc.

[0064] The above embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A welding tool for stainless steel rocket tank melon segment, characterized in that: include: The melon slice rotating support assembly, the melon slice inner tube, the lifting shaft and the melon slice outer pressing component, the melon slice rotating support assembly is rotatable along the circumferential direction, and is used to support the melon slice inner tube and the melon slice bottom; the melon slice inner tube is used to support the inner side of the melon slice; the melon slice outer pressing component is used to press the melon slice to the melon slice inner tube or release the melon slice from the outer side of the melon slice; the melon slice rotating support assembly is provided with a melon slice inner tube lower pressing mechanism along its circumferential direction, and the melon slice inner tube lower pressing mechanism is used to press the melon slice bottom Pressing and fitting to the melon slice inner tube or releasing the melon slice; the lifting shaft is arranged in the middle of the melon slice rotating support assembly, and the lifting shaft is provided with an upper pressing mechanism base; the upper pressing mechanism base is provided with a melon slice upper pressing mechanism along its circumferential direction, and the melon slice upper pressing mechanism is used to press the top of the melon slice to the upper pressing mechanism base or release the melon slice; the melon slice outer pressing component, the melon slice inner tube lower pressing mechanism, the melon slice upper pressing mechanism and the melon slice inner tube cooperate with each other to position the melon slice and weld the longitudinal seam.

2. The tailor-welded tooling according to claim 1, characterized in that: The melon segment inner tube lower pressing mechanism includes a lower pressing drive cylinder and a lower pressing block. The lower pressing drive cylinder drives the lower pressing block toward or away from the bottom of the melon segment by telescoping.

3. The tailor-welded tooling according to claim 1, characterized in that: The melon slice upper pressing mechanism includes an upper pressing drive cylinder and an upper pressing block. The upper pressing drive cylinder drives the upper pressing block toward or away from the top of the melon slice by telescoping.

4. The tailor-welded tooling according to claim 1, characterized in that: The upper pressing mechanism base is further provided with a melon segment outer tire upper pressing mechanism along its circumferential direction, and the melon segment outer tire upper pressing mechanism is used to press the upper part of the melon segment outer pressing component to the upper pressing mechanism base.

5. The tailor-welded tooling according to claim 1, characterized in that: It also includes a support base, and the melon slice rotation support assembly is arranged on the support base; the melon slice rotation support assembly can rotate around the circumferential direction of the support base to drive the melon slice inner tube and the melon slice to rotate.

6. The tailor-welded tooling according to claim 1, characterized in that: The lifting shaft is provided with a melon slice back protection mechanism that can rotate around it; near the melon slice inner tube, the melon slice back protection mechanism is provided with an arc groove that is adapted to the melon slice longitudinal seam; the arc groove is used to fill with protective gas to provide protective gas to the melon slice longitudinal seam during welding.

7. The tailor-welded fixture according to claim 1, characterized in that: The melon segment inner tube includes an inner tube frame and an inner tube outer mold, and the inner tube frame is used to support the inner tube outer mold; the inner tube outer mold includes a cylindrical section at the bottom of the melon segment, a transition section of the melon segment and an elliptical upper section of the melon segment, and the cylindrical section at the bottom of the melon segment, the transition section of the melon segment and the elliptical upper section of the melon segment are connected in sequence up and down to control the inner side profile of the melon segment by supporting the inner side surface of the melon segment.

8. The tailor-welded fixture according to claim 3, characterized in that: The melon slice upper pressing mechanism also includes an upper pressing mounting base and an upper pressing lever, and the upper pressing mounting base is arranged on the upper pressing mechanism base; in the vertical direction, the upper pressing mounting base is provided with an upper pressing driving cylinder; the two ends of the upper pressing lever are respectively connected to the upper pressing driving cylinder and the upper pressing block, and the upper pressing driving cylinder is extended and retracted, and drives the upper pressing block toward or away from the top of the melon slice through the upper pressing lever.

9. The tailor-welded fixture according to claim 7, characterized in that: Baffles are respectively arranged on two sides of the inner tube outer mold; the baffles are used to protect the inner tube outer mold when cutting or welding melon slices.

10. The tailor-welded fixture according to claim 7, characterized in that: A laser cutting groove is provided on the cylindrical section at the bottom of the melon segment of the inner tube outer mold along the circumferential direction of the tailor-welded tooling so as to cut the lower end of the melon segment along the laser cutting groove.

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