Die jig tool for welding scalloped segment

Abstract

The utility model provides a mould tool for welding a scalloped segment. The mould tool comprises at least one group of moulds, each set of mold comprises two inner tube devices which are correspondingly arranged, and the two inner tube devices are used for supporting the inner side face of the first scalloped segment workpiece and the inner side face of the second scalloped segment workpiece respectively so as to weld the first scalloped segment workpiece and the second scalloped segment workpiece. The mould tool can only support the weld joint area of the scalloped segment workpiece, the machining difficulty of the mould tool is lowered, and the machining period of the mould tool is shortened.

Description

Technical Field

[0001] The utility model relates to the field of tank bottom manufacturing, in particular to a mold tooling for melon slice welding. Background Art

[0002] Existing melon-slice welded tanks typically utilize a monolithic mold to control the melon slice's deformation. This method requires a tire or compression straps to maintain the melon slice's profile within a certain tolerance, resulting in high tooling costs. Furthermore, because the tire and the monolithic mold are typically not a single piece, the contact area between the tire and the monolithic mold is limited when the tire is pressed against the inner tube, leaving a significant area of uncontrolled surface deformation.

[0003] In order to reduce the processing difficulty and cost of the mold tooling, it is particularly important to design a mold tooling for melon slice welding. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a mold tooling for melon slice welding.

[0005] The utility model provides a mold tooling for melon slice welding, comprising: at least one group of molds; each group of the molds comprises two correspondingly arranged inner tube devices, and the two inner tube devices are respectively used to support the inner side surfaces of a first melon slice workpiece and a second melon slice workpiece to weld the first melon slice workpiece and the second melon slice workpiece.

[0006] According to one embodiment of the present invention, the inner tube device includes a base and a working surface, the base is used to support the working surface, and the working surface is used to fit the inner side surface of the melon slice workpiece to support the melon slice workpiece.

[0007] According to one embodiment of the present invention, the base is detachably connected to the work surface.

[0008] According to one embodiment of the present invention, pins are correspondingly provided at the upper end and the lower end of the working surface, and the pins are used to cooperate with the melon slice workpiece to position the melon slice workpiece.

[0009] According to one embodiment of the present invention, the pin is a radially telescopic pin or an axially telescopic pin.

[0010] According to one embodiment of the present invention, a retractable support structure is provided at the lower end of the inner tube device, and the retractable support structure is used to support the lower end of the melon slice workpiece.

[0011] According to one embodiment of the present invention, the retractable supporting structure is a follower bearing wheel; the follower bearing wheel includes a spring and a bearing wheel, a U-shaped bracket is provided on the upper end of the spring, and the U-shaped bracket is provided with a bearing wheel that can rotate in a horizontal plane perpendicular to the moving direction of the melon slice workpiece, and the spring is used to enable the bearing wheel to adaptively support the melon slice workpiece and cooperate with the movement of the melon slice workpiece.

[0012] According to one embodiment of the present utility model, the retractable supporting structure is an electric push rod, which is provided with a pressure sensing device, and the pressure sensing device is used to measure the pressure borne by the electric push rod; the electric push rod adjusts the axial retractable length according to the pressure value of the pressure sensing device, and adaptively supports the melon slice workpiece.

[0013] According to one embodiment of the utility model, it also includes a gas protection groove structure, which is arranged between the two inner tube devices; the gas protection groove structure is provided with a protective gas groove adapted to the weld between the first melon slice workpiece and the second melon slice workpiece; the protective gas groove is used to fill the protective gas to perform gas protection on the weld.

[0014] According to one embodiment of the present invention, the gas protection groove structure includes a protective gas hole and a step groove arranged on the sides of the two inner tube devices close to each other; the step grooves of the two inner tube devices are connected to form the protective gas groove, and the protective gas hole is used to guide the protective gas to the protective gas groove to perform gas protection on the weld.

[0015] The mold tooling for melon slice welding of the utility model adopts two correspondingly arranged inner tube devices for docking, and only supports the weld seam area of the melon slice workpiece, thereby reducing the processing difficulty and processing cycle of the mold tooling.

[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 three-dimensional diagram of an inner tube device according to an embodiment of the present invention;

[0019] Figure 2 This is a front view of an inner tube device according to an embodiment of the present invention;

[0020] Figure 3 It is a three-dimensional diagram of a follower bearing wheel according to an embodiment of the present utility model.

[0021] Description of reference numerals:

[0022] 1-upper profile block; 2-upper pin; 3-left profile block; 4-lower profile block; 5-lower pin; 6-follower bearing wheel; 7-tire buckle; 8-right profile block; 9-air protection groove step; 10-protective air hole; 11-base. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Figure 1 This is a three-dimensional diagram of an inner tube device according to an embodiment of the present invention; Figure 2 This is a front view of an inner tube device according to an embodiment of the present invention; Figure 3 It is a three-dimensional diagram of a follower bearing wheel according to an embodiment of the present utility model.

[0030] like Figure 1 As shown, the present invention provides a mold tooling for melon slice welding, comprising: at least one set of molds. Each set of molds includes two corresponding inner tube devices, each of which is used to support the inner side surfaces of a first melon slice workpiece and a second melon slice workpiece, respectively, to weld the first melon slice workpiece and the second melon slice workpiece.

[0031] The mold tooling of this embodiment uses two corresponding inner tube devices to connect to each other to weld two melon slices. The cost of this mold tooling is much lower than that of the existing integral inner tube structure, and the tooling cost is only 1 / 4 to 1 / 10 of that of the integral inner tube structure.

[0032] like Figure 2 As shown, according to one embodiment of the present invention, the inner tube device includes a base 11 and a working surface. The base 11 is used to support the working surface, and the working surface is used to fit the inner side of the melon slice workpiece to support the melon slice workpiece.

[0033] In this embodiment, the working surface profile can be roughly adapted to the inner side of the melon wedge workpiece. For example, the base can be a hollow structure formed by welding section steel.

[0034] According to one embodiment of the present invention, the base 11 is detachably connected to the work surface.

[0035] According to one embodiment of the present invention, the working surface can be four detachably connected, precision-machined surfaces: an upper surface block 1, a left surface block 3, a lower surface block 4, and a right surface block 8. The four surfaces can be bolted together or integrally formed, and the working surface can be assembled and connected to the base via bolts. The working surface profile can be consistent with the theoretical local profile of the melon slice.

[0036] In this embodiment, the working surface composed of the four aforementioned profiles can be a hollow structure. The primary contact areas between the melon slice workpiece and the mold tooling can be the four aforementioned profiles, with no contact with other parts of the mold tooling. This mold tooling utilizes a modular, assembled inner tube device, with finely machined profiles used only in the area to be welded to support the melon slice workpiece. This significantly reduces the mold tooling processing difficulty and cycle time, and facilitates disassembly and installation. Furthermore, if the size or profile of the melon slice workpiece changes, the working surface can be replaced, making operation convenient and economical.

[0037] According to one embodiment of the present invention, pins are correspondingly provided at the upper end and the lower end of the working surface, and the pins are used to cooperate with the melon slice workpiece to position the melon slice workpiece.

[0038] In this embodiment, the melon slice workpiece can be provided with pin holes that cooperate with pins on the working surface to achieve precise positioning of the melon slice workpiece on the mold tooling. The pins can be fixed pins or retractable pins and can be positioned on the central axis of the inner tube assembly (for example, the pins can be positioned at the center of the upper and lower mold surface blocks). For example, the pins include upper pins 2 and lower pins 5.

[0039] According to one embodiment of the present invention, the pin is a radially telescopic pin or an axially telescopic pin.

[0040] In this embodiment, the pin may be a pneumatic or electric retractable pin, and the pin may be extended or retracted by a pneumatic cylinder or an electric cylinder.

[0041] According to one embodiment of the present invention, a retractable support structure is provided at the lower end of the inner tube device, and the retractable support structure is used to support the lower end of the melon slice workpiece.

[0042] In this embodiment, the base can be provided with multiple retractable support structures to more stably support the lower end of the melon slice workpiece. The mold tooling can adaptively support the melon slice workpiece through the retractable support structure, especially capable of suppressing deformation of thin-walled melon slice workpieces.

[0043] like Figure 3 As shown, according to one embodiment of the present invention, the retractable support structure is a follower bearing wheel 6. The follower bearing wheel 6 includes a spring and a bearing wheel. A U-shaped bracket is provided on the upper end of the spring, and the U-shaped bracket is provided to rotate in a horizontal plane perpendicular to the moving direction of the melon slice workpiece (such as Figure 2 The spring is used to enable the bearing wheel to adaptively support the melon slice workpiece and cooperate with the movement of the melon slice workpiece.

[0044] In this embodiment, the U-shaped bracket can be provided with a horizontal rotation axis, and a bearing wheel can be mounted on the rotation axis to rotate relative to the U-shaped bracket. The lower end surface of the melon slice workpiece can only contact the bearing wheel surface, without contacting other parts of the inner tube assembly (such as the base). Because the melon slice workpiece is a thin sheet metal shell, it is difficult to ensure dimensional consistency. The dimension from the pin hole to the lower edge of the melon slice workpiece often fluctuates.

[0045] Unlike traditional molds that provide no support, fixed support, or manually adjust the height of the spacer blocks for the melon slice workpiece, the follower bearing wheels of the mold tooling in this embodiment can adapt to small variations in the size of the melon slice workpiece's lower edge, ensuring that the majority of the melon slice workpiece's weight is borne by the follower bearing wheels, preventing deformation and damage to the melon slice workpiece (such as the pin hole) due to excessive force, and providing a higher tolerance for dimensional errors in the melon slice workpiece. Multiple follower bearing wheels can be provided at the lower end of the inner tube assembly. For example, a follower bearing wheel is provided on each side of a pin provided at the lower end of the working surface (e.g., the lower mold surface block).

[0046] According to one embodiment of the present invention, the retractable support structure is a push rod equipped with a pressure sensor for measuring the pressure applied to the push rod. The push rod adjusts its axial extension length based on the pressure value of the pressure sensor, thereby adaptively supporting the melon slice workpiece.

[0047] According to one embodiment of the present invention, in addition to the inner tube assembly, the mold assembly further includes a gas shielding groove structure disposed between the two inner tube assemblies. The gas shielding groove structure provides a shielding gas groove adapted to the weld seam between the first and second melon segments. The shielding gas groove is filled with shielding gas to provide gas shielding for the weld seam.

[0048] In this embodiment, the gas shielding groove structure can be an external, removable structure independent of the inner tube assembly. For example, the gas shielding groove structure can be a bracket and a shielding gas groove (groove) provided within the bracket. Before welding the melon slices, the gas shielding groove structure can be placed between the two corresponding inner tube assemblies. The shielding gas groove then faces the weld and joins the two melon slices to form a gas channel for shielding gas to prevent oxidation of the weld. This mold assembly is suitable for welding melon slices made of easily oxidized materials such as stainless steel and aluminum alloy.

[0049] According to one embodiment of the present invention, Figure 1 、 2 As shown, the gas protection groove structure includes a protective gas hole 10 and a gas protection groove step 9 provided on the side of the two inner tube devices close to each other. The gas protection groove steps 9 of the two inner tube devices are connected to form a protective gas groove. The protective gas hole 10 is used to guide the protective gas to the protective gas groove to provide gas protection for the weld.

[0050] In this embodiment, the protective gas holes can be evenly arranged on the sides of the two inner tube devices close to each other. The mold tooling can form an environment dominated by protective gas in the protective gas groove through the protective gas holes and the stepped structure of the gas protection groove, thereby achieving protective gas coverage on the back of the welding position.

[0051] According to an embodiment of the present invention, porous foam copper can be installed on the sides of the two inner tube devices that are close to each other to form protective air holes 10.

[0052] According to one embodiment of the present invention, in addition to the inner tube assembly, the mold assembly also includes a back shielding gas system. This system includes a shielding gas cylinder, a shielding gas pipe, and a solenoid valve mounted on the pipe. The solenoid valve controls the flow of the shielding gas pipe. One end of the shielding gas pipe is connected to the shielding gas cylinder, and the other end is connected to a shielding gas hole 10. This allows the gas in the shielding gas cylinder to be directed through the shielding gas groove to the cutting and welding areas of the melon slice workpiece.

[0053] In this embodiment, the solenoid valve can be installed in the base (steel structure) frame of the inner tube device. The shielding gas pipe can be inserted from the inner side of the base (steel structure frame) of the inner tube device. The solenoid valve can be controlled by the system PLC. The shielding gas cylinder can be a nitrogen cylinder.

[0054] According to one embodiment of the present invention, an outer tube fastening buckle 7 can be provided on the upper end surface of the inner tube device for cooperating with other external mechanisms to fasten and press the melon slice workpiece.

[0055] In this embodiment, the melon slice workpiece can be placed in the inner tube device by manual transportation.

[0056] The above embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0057] 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 mold tool for melon slice welding, characterized in that: include: At least one set of molds; Each group of molds includes two corresponding inner tube devices, and the two inner tube devices are used to support the inner side surfaces of the first melon slice workpiece and the second melon slice workpiece respectively to weld the first melon slice workpiece and the second melon slice workpiece.

2. The mold tooling according to claim 1, characterized in that: The inner tube device includes a base and a working surface, the base is used to support the working surface, and the working surface is used to fit the inner side of the melon slice workpiece to support the melon slice workpiece.

3. The mold tooling according to claim 2, characterized in that: The base is detachably connected to the work surface.

4. The mold tooling according to claim 2, characterized in that: Pins are correspondingly provided at the upper end and the lower end of the working surface, and the pins are used to cooperate with the melon slice workpiece to position the melon slice workpiece.

5. The mold tooling according to claim 4, characterized in that: The pin is a radial telescopic pin or an axial telescopic pin.

6. The mold tooling according to claim 1, characterized in that: A retractable supporting structure is provided at the lower end of the inner tube device, and the retractable supporting structure is used to support the lower end of the melon slice workpiece.

7. The mold tooling according to claim 6, characterized in that: The retractable support structure is a follower bearing wheel; the follower bearing wheel includes a spring and a bearing wheel, a U-shaped bracket is provided on the upper end of the spring, and the U-shaped bracket is provided with a bearing wheel that can rotate in a horizontal plane perpendicular to the moving direction of the melon slice workpiece, and the spring is used to enable the bearing wheel to adaptively support the melon slice workpiece and cooperate with the movement of the melon slice workpiece.

8. The mold tooling according to claim 6, characterized in that: The retractable support structure is an electric push rod, which is provided with a pressure sensing device for measuring the pressure borne by the electric push rod; the electric push rod adjusts the axial retractable length according to the pressure value of the pressure sensing device to adaptively support the melon slice workpiece.

9. The mold tooling according to claim 1, characterized in that: It also includes an air conservation groove structure, which is arranged between the two inner tube devices; The gas protection groove structure is provided with a protective gas groove adapted to the weld between the first melon segment workpiece and the second melon segment workpiece; the protective gas groove is used to fill the protective gas to provide gas protection to the weld.

10. The mold tooling according to claim 9, characterized in that: The gas protection groove structure includes a protective gas hole and a step groove arranged on the sides of the two inner tube devices close to each other; the step grooves of the two inner tube devices are connected to form the protective gas groove, and the protective gas hole is used to guide the protective gas to the protective gas groove to perform gas protection on the weld.

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