Inertia ring and die stamping and welding forming process thereof

Abstract

The invention relates to the technical field of stamping forming of inertia rings through dies, and discloses an inertia ring and a die stamping and welding forming technology thereof.The inertia ring comprises a plurality of arc-shaped cylinders which are sequentially connected end to end to form the inertia ring of a closed annular structure; the outer ring side wall and the inner ring side wall of each arc-shaped column body are each provided with at least two connecting parts, each arc-shaped column body comprises a plurality of sheet materials which are stacked in the axial direction of the inertia ring, the multiple sheet materials of the same arc-shaped column body are connected through the connecting parts, and the multiple sheet materials are formed on a material belt through continuous stamping. According to the inertia ring and the die stamping and welding forming process thereof, the sheet materials are manufactured on the metal steel belt in a continuous stamping and blanking mode, then the arc-shaped column body and the inertia ring are formed through assembling and machining, the utilization rate of the material belt is greatly increased, the production cost of the inertia ring is reduced, and in addition, the inertia ring has the beneficial effects that the production efficiency is improved, and the production cost is reduced. The sheet materials are produced in a continuous stamping mode, the production efficiency of the sheet materials is extremely high, and therefore the production efficiency of the inertia ring is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of forming inertia rings by die stamping, and more specifically, it relates to an inertia ring and a die stamping and welding forming process thereof. Background Art

[0002] An inertia ring, also known as a rotational inertia ring, is an annular device installed in a rotating mechanical system. Its core function is to adjust the rotational inertia of the system. Rotational inertia is a measure of the inertia of an object during rotational motion and is related to the mass distribution and radius of rotation of the object. The inertia ring changes the inertial characteristics of the system by increasing or decreasing the rotating mass, thereby optimizing the dynamic response and stability, and is widely used in fields such as industrial automation, transportation, and aerospace.

[0003] The existing forming method of inertia rings usually involves forging a blank using forging equipment first, and then using a machine tool to perform machining processes such as turning and drilling on the blank. The production process of inertia rings is complex; due to the precision requirements of machining, a relatively large amount of machining allowance needs to be reserved, and a large amount of excess material will be removed during the production process, resulting in a low utilization rate of raw materials; since drilling holes during machining requires drilling one by one and the position of each hole needs to be positioned, the time for positioning and drilling is superimposed, resulting in a long production cycle and low production efficiency of inertia rings. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects existing in the prior art and provide an inertia ring and a die stamping and welding forming process thereof that can improve the utilization rate of raw materials.

[0005] To achieve the above purpose, the technical solution of the present invention provides an inertia ring, including: a plurality of arc-shaped columns, the plurality of arc-shaped columns are sequentially connected end to end to form an inertia ring with a closed annular structure. At least two connecting parts are provided on the outer side wall and the inner side wall of the arc-shaped column. The arc-shaped column includes a plurality of sheets stacked along the axial direction of the inertia ring, and the plurality of sheets of the same arc-shaped column are connected through the connecting parts, and the plurality of sheets are continuously stamped on a strip.

[0006] By using the inertia ring of the present invention, the sheets are manufactured by continuously stamping and blanking on a metal strip, and then the arc-shaped columns and the inertia ring are formed through assembly and processing, which greatly improves the utilization rate of the strip, reduces the production cost of the inertia ring. Moreover, by continuously stamping to produce the sheets, the production efficiency of the sheets is extremely high, thereby greatly improving the production efficiency of the inertia ring. In addition, by adjusting the number of stacked sheets, the weight of the inertia ring can be adjusted to adapt to the requirements of different inertia rings, which is beneficial to the adaptive adjustment of the inertia ring.

[0007] Preferably, multiple said sheets of the same arc-shaped cylinder overlap along the axial direction of the inertia ring and are connected by a fitting structure. A convex and concave fitting connection structure is provided between the adjacent sheets in the up-and-down direction, and the fitting connection structure is used to limit the lateral misalignment between the sheets. Such a design is conducive to the precise stacking of multiple sheets and improves the connection strength between two adjacent sheets.

[0008] Preferably, the sheet at the uppermost position is the first sheet, and the groove on the first sheet is a through groove; the sheet below the first sheet is the second sheet, and the groove on the second sheet is a blind groove. A convex is provided on the second sheet and is matched with the blind groove or the through groove. With such a design, the upper and lower surfaces of the inertia ring are both flat surfaces, which is conducive to the stacking and transportation of the inertia ring.

[0009] Preferably, each inertia ring includes four said arc-shaped cylinders. The arc-shaped cylinder has a mounting hole, and the connecting part is a welding molten pool. Such a design can not only ensure a high utilization rate of the strip material but also ensure a high production efficiency of the inertia ring.

[0010] Preferably, a first connecting piece is provided at one end of the arc-shaped cylinder, and a second connecting piece matched with the first connecting piece is provided at the other end of the arc-shaped cylinder. The area where two adjacent arc-shaped cylinders are fitted and connected forms a welding groove. The two adjacent arc-shaped cylinders are welded and connected, and a weld seam is formed in the welding groove. With such a design, the connection strength between two adjacent arc-shaped cylinders can be ensured by welding, thereby ensuring the overall quality of the inertia ring.

[0011] Preferably, the first connecting piece is set as a tenon head with a dovetail structure, and the second connecting piece is set as a mortise matched with the tenon head. Such a design is conducive to improving the quality of the production and manufacturing of the inertia ring.

[0012] Preferably, the first connecting piece is set as a convex head with an arc-shaped structure, and the second connecting piece is set as a notch matched with the convex head. The adjacent sheets, as well as between the tenon head and the mortise, are connected by an adhesive layer. Such a design is conducive to improving the cost performance of the production and manufacturing of the inertia ring.

[0013] A die stamping and welding forming process for an inertia ring includes the following steps: S1. Manufacturing the sheet: The strip material forms the sheet through a stamping die; S2. Stacking the sheets: Apply hot melt adhesive to the sheet formed in S1, and stack multiple sheets to form the arc-shaped cylinder; S3. Weld the arc-shaped cylinder: Coat hot melt adhesive on the mating end faces of the first connecting member and the second connecting member, and form the welding molten pool by welding on the outer ring side wall and the inner ring side wall with an external laser welding robot arm; S4. Weld the inertia ring: After splicing and positioning the four arc-shaped cylinders, weld the four arc-shaped cylinders into the inertia ring; S5. Uniformly process the bonding layer of the inertia ring.

[0014] With such a design, the production process of the inertia ring is simpler and more convenient.

[0015] Preferably, S1 is completed by a multi-station progressive die, and the progressive die includes a punching die, a grooving die, a coining die, and a blanking die. S1 includes the following steps: S11. Punch holes in the strip by the punching die; S12. Cut grooves in the strip by the grooving die; S13. Coin the strip by the coining die; S14. Blank the strip by the blanking die. After blanking the grooved part of the strip, the first sheet material is formed, and after blanking the coined part of the strip, the second sheet material is formed.

[0016] With such a design, it is beneficial to improve the production efficiency of the sheet material, thereby further improving the production efficiency of the inertia ring.

[0017] Preferably, the coining die includes an upper die, a lower die base, a lower template, a first positioning post, and a thimble. The lower template is slidably and guidingly engaged with the lower die base. The first positioning post and the thimble are both fixedly installed on the lower die base. The lower template is provided with a first guiding groove that slidably engages with the first positioning post; In the open die state, the first positioning post extends out of the top surface of the lower template. The lower template is provided with a second guiding groove that slidably engages with the thimble. The upper die is provided with a third guiding groove that slidably engages with the first positioning post, and the upper die is provided with a fourth guiding groove corresponding to the thimble; In S13, the upper die and the lower template are closed to coin the strip. With such a design, controlling the upper die to move towards the lower die base until the lower template and the lower die base are closed can complete the coining process of the sheet material.

[0018] Preferably, the coining die further includes a nitrogen spring fixedly installed on the lower die base. The telescopic end of the nitrogen spring is fixedly connected to the lower template. In the open die state, the top end of the thimble is located in the second guiding groove; In S13, after the upper die and the lower template initially clamp the strip, the upper die continues to move downward, driving the lower template to move downward synchronously, so that the top end of the ejector pin protrudes from the top surface of the lower template and penetrates into the sheet material. Such a design is beneficial to improving the quality and precision of the manufactured second sheet material.

[0019] Preferably, in S4, four of the arc-shaped cylinders are fixed by a positioning tooling. The positioning tooling includes a support ring, a second positioning post, and a bolt. The support ring is provided with a jack and a threaded hole. The second positioning post is inserted into the jack, and the bolt is threadedly connected to the threaded hole. In S4, the arc-shaped cylinders are preliminarily positioned by the second positioning post. The bolt is screwed into the threaded hole and tightened to fix the positions of the arc-shaped cylinders. Then, the four arc-shaped cylinders are welded together by welding to obtain the inertia ring. With such a design, the second positioning post and the bolt are used to position the four arc-shaped cylinders, which can ensure that the precision and quality of the inertia ring formed after welding meet the requirements.

[0020] Preferably, in S5, a rotary heating device is used to homogenize the bonding layer of the inertia ring. The rotary heating device includes a rotating disk and a plurality of positioning disks rotatably connected to the rotating disk. In S5, the rotating disk revolves around its own center line, and the positioning disks rotate around their own center lines, making the bonding layer uniform.

[0021] The beneficial effects of the present invention are as follows: By using the inertia ring and its die stamping and welding forming process of the present invention, sheet materials are manufactured by continuously stamping and blanking on a metal steel strip, and then arc-shaped cylinders and inertia rings are formed through assembly and processing. This greatly improves the utilization rate of the strip, reduces the production cost of the inertia ring. Moreover, by continuously stamping to produce sheet materials, the production efficiency of the sheet materials is extremely high, thus greatly improving the production efficiency of the inertia ring. And by adjusting the number of stacked sheet materials, the weight of the inertia ring can be adjusted to adapt to the requirements of different inertia rings, which is beneficial to the adaptive adjustment of the inertia ring. In addition, the die stamping and welding forming process of the inertia ring mainly applies stamping process and welding process, and the production process of the inertia ring is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the inertia ring (the first connecting member is a tenon); Figure 2 is a three-dimensional structure diagram of the arc-shaped cylinder (the first connecting member is a tenon); Figure 3 is a top view of the arc-shaped cylinder (the first connecting member is a tenon); Figure 4 It is a three-dimensional structure schematic diagram of the inertia ring (the first connecting part is a convex head); Figure 5 It is another three-dimensional structure schematic diagram of the arc-shaped cylinder (the first connecting part is a convex head); Figure 6 It is a structure schematic diagram of the strip processing; Figure 7 It is a structure schematic diagram after the strip is blanked; Figure 8 It is a three-dimensional structure schematic diagram of the first strip; Figure 9 It is the first three-dimensional structure schematic diagram of the second strip; Figure 10 It is the second three-dimensional structure schematic diagram of the second strip; Figure 11 It is a top view schematic diagram after four arc-shaped cylinders are fitted and connected (no weld is formed in the welding groove); Figure 12 It is a test force-displacement curve graph obtained after the inertia ring in Example 6 is provided with an adhesive layer; Figure 13 It is a test force-displacement curve graph obtained after the inertia ring in Example 6 is not provided with an adhesive layer; Figure 14 It is a test force-displacement curve graph obtained after testing in Example 7; Figure 15 It is a three-dimensional structure schematic diagram of the convex punching die; Figure 16 It is a front view schematic diagram of the convex punching die; Figure 17 It is a partial three-dimensional structure schematic diagram of the convex punching die (excluding the upper die and the lower template); Figure 18 It is a three-dimensional structure schematic diagram of the lower template; Figure 19 It is a three-dimensional structure schematic diagram of the upper die; Figure 20 It is a three-dimensional structure schematic diagram of the pressing tooling; Figure 21 It is a three-dimensional structure schematic diagram of the pressure head; Figure 22 It is a three-dimensional structure schematic diagram of the positioning tooling; Figure 23 It is a three-dimensional structure schematic diagram of the support ring; Figure 24 It is a three-dimensional structure schematic diagram of the rotary heating equipment; Figure 25 It is a front view sectional schematic diagram of the rotary heating equipment; Figure 26It is a schematic diagram of a partial three-dimensional structure of a rotary heating device (excluding the sealing cover); Figure 27 is a schematic diagram of the three-dimensional structure of the bracket; Figure 28 It is a schematic diagram of the three-dimensional structure of the rotating disk; Figure 29 It is a three-dimensional structural schematic diagram of the positioning plate; Figure 30 It is a three-dimensional structural schematic diagram of the positioning plate fixing the inertia ring through screws.

[0023] In the figure: 1. Inertia ring; 100, arc column; 110, connecting part; 120, sheet; 121, first sheet; 1211, through groove; 1212, first through hole; 122, second sheet; 1221, protrusion; 1222, blind groove; 1223, second through hole; 130, welding seam; 141, outer ring side wall; 142, inner ring side wall; 143, mounting hole; 144, first connecting member; 145, second connecting member; 146, welding groove; 200, material strip; 210, blanking opening; 220, overlap; 300, convex mold; 310, upper mold; 311, third guide groove; 312, fourth guide groove; 313, fifth guide groove; 320, lower mold base; 330, guide column; 340, lower mold plate; 341, first guide groove; 342, second guide groove; 350, nitrogen spring; 360, first positioning column; 370, ejector pin; 400, clamping tool; 410, support platform; 420, mounting frame; 430, positioning pad; 440, positioning pin; 450, oil cylinder; 460, pressure head; 461, guide hole; 500, positioning tool; 510, support ring; 511, plug hole; 512, threaded hole; 513, avoidance groove; 520, second positioning column; 530, bolt; 540, gasket; 600, rotary heating device; 610, bracket; 611, protruding platform; 620, motor; 630, rotating disk; 631, partition; 632, boss; 640, positioning disk; 641, screw hole; 642, screw; 643, spiral ladder blade; 644, rotating shaft; 650, sealing cover; 661, air inlet; 662, exhaust port. DETAILED DESCRIPTION

[0024] Reference will now be made to example embodiments to discuss the subject matter described herein. It should be understood that these embodiments are discussed so that those skilled in the art can better understand and thus implement the subject matter described herein. Changes may be made to the functions and arrangements of the elements discussed without departing from the scope of protection of the content of this specification. Each example may omit, substitute, or add various processes or components as needed. Additionally, features described relative to some examples may be combined in other examples.

[0025] For a better understanding of the present invention, the following will be combined with Figures 1 - 30 A kind of inertia ring and its die stamping and welding forming process of the present invention will be described in detail.

[0026] Example 1: As Figures 1 - 7 shown, an inertia ring includes: a plurality of arc-shaped cylinders 100, the plurality of arc-shaped cylinders 100 are sequentially connected end to end to form an inertia ring 1 with a closed ring structure. At least two connecting parts 110 are provided on the outer side wall 141 and the inner side wall 142 of the arc-shaped cylinder 100. The arc-shaped cylinder 100 includes a plurality of sheet materials 120 stacked along the axial direction of the inertia ring 1. The plurality of sheet materials 120 of the same arc-shaped cylinder 100 are connected through the connecting parts 110, and the plurality of sheet materials 120 are continuously stamped on a strip 200.

[0027] It should be noted that adjacent two arc-shaped cylinders 100 are rigidly connected by at least one of welding, riveting, pin connection, and snap connection. The axial direction of the inertia ring 1 is both the thickness direction of the arc-shaped cylinder 100 and the thickness direction of the sheet material 120, that is, the plurality of sheet materials 120 are stacked along their own thickness directions to form the arc-shaped cylinder 100. The connecting parts 110 can be formed by welding or gluing at the outer side wall 141 and the inner side wall 142 of the arc-shaped cylinder 100, so that the plurality of sheet materials 120 of the same arc-shaped cylinder 100 form a rigid connection; The strip 200 is a metal steel strip. After the sheet material 120 is punched and blanked from the strip 200, a blanking port 210 is formed on the strip 200. The unused surplus material between two adjacent blanking ports 210 is a cut-off 220. By continuously stamping the sheet material 120 on the metal steel strip, the value of the cut-off 220 (the size of the cut-off 220) is small. Compared with the production method of forging a blank first and then machining with a machine tool, the utilization rate of raw materials is higher, which is beneficial to reducing production costs.

[0028] By using the inertia ring of the present invention, the sheet material 120 is manufactured by continuously stamping and blanking on a metal steel strip, and then the arc-shaped column 100 and the inertia ring 1 are formed through assembly and processing, which greatly improves the utilization rate of the strip 200, reduces the production cost of the inertia ring 1. Moreover, by continuously stamping the sheet material 120, the production efficiency of the sheet material 120 is extremely high, thus greatly improving the production efficiency of the inertia ring 1. In addition, by adjusting the number of stacked sheet materials 120, the weight of the inertia ring 1 can be adjusted, so as to adapt to the requirements of different inertia rings 1, which is conducive to the adaptive adjustment of the inertia ring 1.

[0029] Embodiment 2: As an optimization of Embodiment 1, as Figure 2 、 Figure 8 、 Figure 9 and Figure 10 shown, multiple sheet materials 120 of the same arc-shaped column 100 overlap axially along the inertia ring 1 and are connected through a fitting structure. A convex structure 1221 and a groove fitting connection structure are provided between the sheet materials 120 adjacent in the up-down direction, and the fitting connection structure is used to limit the lateral misalignment between the sheet materials 120.

[0030] It should be noted that by setting the convex structure 1221 and the groove fitting connection structure, it is beneficial to the precise stacking of multiple sheet materials 120, improve the connection strength between two adjacent sheet materials 120, improve the ability of the arc-shaped column 100 to resist interlayer separation, and the sheet material 120 is not prone to lateral misalignment.

[0031] Embodiment 3: As an optimization of Embodiment 2, as Figure 2 、 Figure 8 、 Figure 9 and Figure 10 shown, the sheet material 120 located at the uppermost is the first sheet material 121, and the groove on the first sheet material 121 is a through groove 1211; the sheet material 120 located below the first sheet material 121 is the second sheet material 122, the groove on the second sheet material 122 is a blind groove 1222, and a convex structure 1221 is provided on the second sheet material 122 to cooperate with the blind groove 1222 or the through groove 1211.

[0032] It should be noted that through stamping of the second sheet material 122, a protrusion 1221 is formed on one side of the second sheet material 122, and a blind groove 1222 is formed at a corresponding position on the other side of the second sheet material 122. The protrusion 1221 and the blind groove 1222 of the stacked second sheet materials 122 are connected through shape matching to form a stable fitting connection structure. Through the cooperation of the protrusion 1221 and the blind groove 1222, and the cooperation of the protrusion 1221 and the through groove 1211, the overall strength of the arc-shaped column 100 can be improved. In addition, since the topmost sheet material 120 is the first sheet material 121, the protrusion 1221 of the second sheet material 122 in the lower layer is accommodated in the through groove 1211 of the first sheet material 121. The upper and lower surfaces of the arc-shaped column 100 are both flat surfaces, and the upper and lower surfaces of the manufactured inertia ring 1 are also both flat surfaces. When the inertia rings 1 are stacked and transported, the friction force between the inertia rings 1 is relatively large, and it is not easy to shift or collide, which is beneficial to the stacked transportation of the inertia rings 1; The ratio of the height of the protrusion 1221 to the thickness of the sheet material 120 is 1:1.2 - 3, which can ensure the fitting strength between the protrusion 1221 and the blind groove 1222 or the through groove 1211. If the height of the protrusion 1221 is relatively small, the fitting strength between the protrusion 1221 and the blind groove 1222 or the through groove 1211 is insufficient. If the height of the protrusion 1221 is too large, it will be difficult for the protrusion 1221 to be embedded in the blind groove 1222 or the through groove 1211, affecting the assembly and processing of the arc-shaped column 100.

[0033] In this embodiment, the second sheet material 122 is provided with four protrusion 1221 and four blind groove 1222 mating structures, and the first sheet material 121 is provided with corresponding four through grooves 1211.

[0034] Embodiment 4: As an optimization of Embodiment 3, as Figure 1 、 Figure 2 、 Figure 4 and Figure 5 shown, each inertia ring 1 includes four arc-shaped columns 100. The arc-shaped column 100 has a mounting hole 143, and the connecting portion 110 is a welding molten pool.

[0035] It should be noted that if the number of arc-shaped columns 100 forming an inertia ring 1 is less than four, it will cause the value of the tab 220 to increase, thereby significantly reducing the utilization rate of the strip 200. If the number of arc-shaped columns 100 forming an inertia ring 1 is more than four, although the value of the tab 220 will be reduced and the utilization rate of the strip 200 will be slightly increased, more sheet materials 120 are required to manufacture the same single inertia ring 1, and more time is consumed in assembly and processing, resulting in a significant reduction in the production efficiency of the inertia ring 1 and a decrease in the cost performance of the production of the inertia ring 1. The optimal solution with the highest cost performance is that each inertia ring 1 includes four arc-shaped columns 100, which can not only ensure a high utilization rate of the strip 200 but also ensure a high production efficiency of the inertia ring 1; the design of the mounting hole 143 is for the convenience of installing the inertia ring 1; The connecting portion 110 is set as a welding molten pool, and the welding molten pool is formed on the outer peripheral side wall 141 and the inner peripheral side wall 142 of the arc-shaped column 100 by laser welding. One welding molten pool connects all the sheet materials 120 of the same arc-shaped column 100 from top to bottom, ensuring the connection strength of the multiple sheet materials 120 and the integrity of the arc-shaped column 100, and the welding molten pool does not protrude from the outer peripheral side wall 141 and the inner peripheral side wall 142 of the arc-shaped column 100, ensuring that the manufactured inertia ring 1 meets the design requirements in shape; Preferably, the welding molten pools on the outer peripheral side wall 141 and the welding molten pools on the inner peripheral side wall 142 correspond to each other one by one, and the welding molten pools on the outer peripheral side wall 141 and the welding molten pools on the inner peripheral side wall 142 that correspond to each other are in the same radial direction of the inertia ring 1. With such a design, when the inertia ring 1 rotates to generate centrifugal force, the welding molten pools in the same radial direction can form a continuous stress transmission path to transmit the centrifugal force to the entire inertia ring 1, reducing the stress concentration phenomenon and being beneficial to improving the overall performance of the inertia ring 1.

[0036] In this embodiment, two welding molten pools are welded on each of the outer peripheral side wall 141 and the inner peripheral side wall 142 of each arc-shaped column 100. The welding molten pool on one of the outer peripheral side walls 141, the welding molten pool on one of the inner peripheral side walls 142, and the axis of the inertia ring 1 are in the same plane; the welding molten pool on the other outer peripheral side wall 141, the welding molten pool on the other inner peripheral side wall 142, and the axis of the inertia ring 1 are in another plane.

[0037] Embodiment 5: As an optimization of Embodiment 4, as Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 11As shown, one end of the arc-shaped column 100 is provided with a first connecting member 144, and the other end of the arc-shaped column is provided with a second connecting member 145 that cooperates with the first connecting member 144. The area where two adjacent arc-shaped columns 100 are cooperatively connected forms a welding groove 146. Two adjacent arc-shaped columns 100 are welded and connected, and a weld 130 is formed within the welding groove 146.

[0038] By providing the first connecting member 144 and the second connecting member 145, it is beneficial for the cooperative connection between two adjacent arc-shaped columns 100 to form the inertia ring 1 with a closed ring structure. By providing the welding groove 146, it is possible to prevent the weld 130 from protruding beyond the outer sidewall 141 or the inner sidewall 142 of the arc-shaped column 100, ensuring that the manufactured inertia ring 1 meets the design requirements.

[0039] In this embodiment, the length direction of the welding groove 146 is consistent with the axial direction of the inertia ring 1. A weld 130 is formed within the welding groove 146 by welding to connect two adjacent arc-shaped columns 100. Welding grooves 146 are formed in both the cooperative connection area of the inner sidewall 142 and the cooperative connection area of the outer sidewall 141 of the arc-shaped column 100. That is, after the inertia ring 1 is welded and assembled, four welds 130 are formed on the inner circle of the inertia ring 1, and four welds 130 are also formed on the outer circle of the inertia ring 1.

[0040] Embodiment 6: As an optimization of Embodiment 5, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 12 and Figure 13 shown, the first connecting member 144 is set as a tenon with a dovetail structure, and the second connecting member 145 is set as a mortise that cooperates with the tenon. Adjacent sheets 120, as well as between the tenon and the mortise, are connected through an adhesive layer.

[0041] It should be noted that by providing the adhesive layer, the connection strength between adjacent sheets 120 and the connection strength between adjacent arc-shaped columns 100 can be improved. Through the cooperation of the tenon and the mortise, the connection strength between two adjacent arc-shaped columns 100 can be further improved, thereby enhancing the tensile detachment force of the inertia ring 1; After two adjacent arc-shaped cylinders 100 are fitted and connected, there is a gap in the mortise and tenon connection area. When welding in the welding groove 146, the arc-shaped cylinder 100 at the welding groove 146 expands rapidly due to heat, while the temperature of the surrounding area not directly heated (such as the part of the tenon located in the mortise) is relatively low and the expansion is small. After welding is completed, the arc-shaped cylinder 100 at the weld 130 and the welding groove 146 cools and shrinks. Since it takes time for heat to conduct from the welding groove 146 to the surrounding area, the cooling speed is relatively slow, and the arc-shaped cylinder 100 has more time to undergo plastic deformation, especially at the end of the arc-shaped cylinder 100 where the mortise is provided. This makes the plastic deformation more significant during the cooling stage, resulting in a shrinkage amount exceeding the expansion amount during the welding heating stage. The opening of the mortise generally shrinks and decreases, closing the gap in the closed-fitting connection area, which is beneficial to enhancing the self-locking effect of the first connecting member 144 and the second connecting member 145, and further improving the stability of the connection between two adjacent arc-shaped cylinders 100.

[0042] A tensile test was carried out on the inertia ring 1 with the first connecting member 144 being a dovetail tenon using an electro-hydraulic servo universal testing machine. During the test, two chucks were clamped on the inertia ring 1, and the line connecting the two chucks passed through the center of the inertia ring 1. After the test, the Figure 12 test force-displacement curve as shown was obtained. The test force is the test tensile force, and the displacement is the relative moving distance between the two chucks of the electro-hydraulic servo universal testing machine. The maximum tensile detachment force of the inertia ring 1 was measured to be 152.846 kN, which is much greater than the design requirement of 88 kN. The higher quality of the inertia ring 1 is beneficial to improving the competitiveness of the product.

[0043] When there is no adhesive layer connection between adjacent sheets 120, as well as between the tenon and the mortise, a tensile test was carried out on the inertia ring 1 using an electro-hydraulic servo universal testing machine. After the test, the Figure 13 test force-displacement curve as shown was obtained. The maximum tensile detachment force of the inertia ring 1 was measured to be 147.582 kN. It can be seen that the design of the adhesive layer improves the tensile detachment force of the inertia ring 1 and the quality of the inertia ring 1.

[0044] Example 7: As an optimization of Example 5, as Figure 4 、 Figure 5 and Figure 14 shown, the first connecting member 144 is set as a convex head with an arc-shaped structure, and the second connecting member 145 is set as a notch that cooperates with the convex head.

[0045] It should be noted that when the first connecting member 144 is set as a convex head with an arc-shaped structure, the manufacturing of the corresponding die for the sheet 120 is simpler and more convenient, which is beneficial to reducing the production cost of the die, thereby reducing the production cost of the inertia ring 1. The welding connection principle between the convex head and the notch is the same as that of the tenon and the mortise in Example 6, and will not be elaborated here.

[0046] Using an electro-hydraulic servo universal testing machine to conduct a tensile test on the inertia ring 1 with the first connecting piece 144 being an arc-shaped convex head, after the test, the following Figure 13 is the obtained test force-displacement curve. The maximum tensile detachment force of the inertia ring 1 is measured to be 134.909 kN. Although it is lower than that of the inertia ring 1 with the first connecting piece 144 being a dovetail tenon, it is still far greater than the design requirement of 88 kN, and the production cost of the mold required for producing the sheet material 120 is lower, and the cost performance of the production and manufacturing of the inertia ring 1 is higher.

[0047] Example 8: A die stamping and welding forming process for an inertia ring, comprising the following steps: S1. Manufacturing the sheet material 120: The strip 200 forms the sheet material 120 through a stamping die; S2. Stacking the sheets: Applying a hot melt adhesive on the sheet material 120 formed in S1, and performing multi-sheet stacking to form an arc-shaped column 100; S3. Welding the arc-shaped column 100: Applying a hot melt adhesive on the end face where the first connecting piece 144 and the second connecting piece 145 are fitted, and forming a welding molten pool on the outer ring side wall 141 and the inner ring side wall 142 through an external laser welding robot arm; S4. Welding the inertia ring 1: After splicing and positioning the four arc-shaped columns 100, welding the four arc-shaped columns 100 into the inertia ring 1; S5. Uniformly treating the bonding layer of the inertia ring 1.

[0048] It should be noted that in S2, the hot melt adhesive is applied to both end portions of the sheet material 120, which can increase the connection strength between adjacent sheet materials 120. In S3, applying a hot melt adhesive on the end face where the tenon and mortise are fitted can increase the connection strength between adjacent arc-shaped columns 100, and the hot melt adhesive is only applied on the end face. Through reasonable control of the amount of applied adhesive, the hot melt adhesive will not enter the welding groove 146, and thus will not affect the welding in S4 or the welding quality. The hot melt adhesive can be applied on the end face where the tenon and mortise are fitted by brushing. The hot melt adhesives applied in S2 and S3 form a bonding layer; the sheet material 120 is manufactured by stamping, and the arc-shaped column 100 and the inertia ring 1 are assembled by stacking and welding. The production process of the inertia ring 1 is simpler and more convenient, greatly improving the production efficiency of the inertia ring 1.

[0049] Example 9: As Figure 6 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 15 shown, S1 is completed by a multi-station progressive die. The progressive die includes a punching die, a slitting die, a bossing die 300 and a blanking die. S1 includes the following steps: S11. Punch holes in the strip 200 through a punching die; S12. Punch slots in the strip 200 through a slotting die; S13. Make bosses on the strip 200 through a bossing die 300; S14. Cut the strip 200 through a blanking die. After blanking the slotted part of the strip 200, a first piece of material 121 is formed. After blanking the bossed part of the strip 200, a second piece of material 122 is formed.

[0050] It should be noted that since holes are punched in the strip 200 in S11, a first through hole 1212 is formed on the first piece of material 121 obtained after blanking in S14, and a second through hole 1223 is formed on the second piece of material 122 obtained. After laminating the first piece of material 121 with multiple second pieces of material 122, the positions of the first through hole 1212 and the second through hole 1223 correspond. A combination of one first through hole 1212 and multiple second through holes 1223 forms a mounting hole 143; The punching die, the slotting die, the bossing die 300 and the blanking die are all integrated on a progressive die. As the strip 200 intermittently moves along the production line direction, the progressive die can complete the stamping of the first piece of material 121 and the second piece of material 122, without the need to frequently replace the die for step-by-step processing, improving the production efficiency of the piece of material 120, and thus further improving the production efficiency of the inertia ring 1.

[0051] Embodiment 10: As an optimization of Embodiment 9, as Figures 15 - 19 shown, the bossing die 300 includes an upper die 310, a lower die base 320, a lower template 340, a first positioning post 360 and a thimble 370. The lower template 340 is in sliding and guiding cooperation with the lower die base 320. The first positioning post 360 and the thimble 370 are both fixedly installed on the lower die base 320. The lower template 340 is provided with a first guiding groove 341 that slidably cooperates with the first positioning post 360; In the open die state, the first positioning post 360 extends out of the top surface of the lower template 340. The lower template 340 is provided with a second guiding groove 342 that slidably cooperates with the thimble 370. The upper die 310 is provided with a third guiding groove 311 that slidably cooperates with the first positioning post 360, and the upper die 310 is provided with a fourth guiding groove 312 corresponding to the thimble 370; In S13, the upper die 310 and the lower template 340 are closed to make bosses on the strip 200.

[0052] It should be noted that the convex punching die 300 further includes a plurality of guide posts 330. The plurality of guide posts 330 are fixedly installed on the lower die base 320. The lower template 340 is slidably connected to the guide posts 330. The upper die 320 is provided with a fifth guide groove 313 that slidably cooperates with the guide posts 330. During the process of the upper die 310 and the lower template 340 being closed, the guide posts 330 gradually extend into the fifth guide groove 313 and play a guiding role in the closing of the upper die 310 and the lower template 340, ensuring that the fourth guide groove 312 of the upper die 310 corresponds to the position of the ejector pin 370, thereby ensuring the accuracy of convex punching and improving the stability of the movement of the upper die 320; At least a part of the guide post 330, the first positioning post 360, and the ejector pin 370 is located within the lower die base 320. There are at least two first positioning posts 360. The first positioning posts 360 are positioned by cooperating with the holes punched in the strip 200 in S11, thereby positioning the strip 200. The third guide groove 311 is used to accommodate the first positioning posts 360 to prevent the first positioning posts 360 from affecting the upper die 310 pressing the strip 200 and further affecting the convex punching of the strip 200. The fourth guide groove 312 is used to accommodate the formed protrusion 1221; The strip 200 passes through between the upper die 310 and the lower template 340. During the process of the upper die 310 and the lower template 340 being closed, the first positioning posts 360 first pass through the holes punched in S11, thereby positioning the strip 200 through the first positioning posts 360, thereby improving the position accuracy of the formed protrusion 1221. Subsequently, the first positioning posts 360 enter the third guide groove 311 and guide the downward movement of the upper die 310 through the sliding cooperation with the third guide groove 311, ensuring that the fourth guide groove 312 is directly above the ejector pin 370; The shape of the fourth guide groove 312 is designed to be complementary to the shape of the protrusion 1221. When the protrusion 1221 is pushed into the fourth guide groove 312, the outer contour of the protrusion 1221 is in close contact with the inner wall of the fourth guide groove 312. Through the radial constraint of the side wall of the fourth guide groove 312 on the protrusion 1221, the deformation of the protrusion 1221 during the pushing-in process is restricted, thereby ensuring the shape accuracy of the protrusion 1221; When the upper die 310 and the lower template 340 are closed, the first positioning posts 360 enter the fourth guide groove 312. The top surface of the strip 200 is in contact with the upper die 310, and the bottom surface of the strip 200 is in contact with the lower template 340. A part of the ejector pin 370 is pushed into the strip 200, causing the strip 200 to form a blind groove 1222 on the bottom surface and a protrusion 1221 on the top surface, and the protrusion 1221 is pushed into the fourth guide groove 312. Subsequently, when the upper die 310 and the lower template 340 are opened, the strip 200 moves one station in the pipeline direction, and the convex punching die 300 repeats the above steps to continuously punch the strip 200; The grooving die and the embossing die 300 are arranged in sequence along the production line direction. For every N workstations that the strip 200 moves, the grooving die performs grooving once. When the grooved area on the strip 200 moves to the workstation of the embossing die 300, the through groove 1211 formed by grooving corresponds to the position of the ejector pin 370 of the embossing die 300. At this time, the upper die 310 and the lower template 340 are closed, and the ejector pin 370 will pass through the through groove 1211 without forming a protrusion 1221 and a blind groove 1222 on the strip 200; After blanking the strip 200 in S14, 1 first piece of material 121 and (N - 1) second pieces of material 122 will be periodically blanked out, and the value of N is the same as the number of pieces of material 120 included in an arc-shaped cylinder 100.

[0053] Embodiment 11: As an optimization of Embodiment 10, as Figures 15 - 17 shown, the embossing die 300 further includes a nitrogen spring 350 fixedly installed on the lower die base 320. The telescopic end of the nitrogen spring 350 is fixedly connected to the lower template 340. In the open die state, the top end of the ejector pin 370 is located in the second guiding groove 342; In S13, after the upper die 310 initially compresses the strip 200 with the lower template 340, the upper die 310 continues to move downward, driving the lower template 340 to move downward synchronously, so that the top end of the ejector pin 370 extends out of the top surface of the lower template 340 and pierces into the strip 200.

[0054] It should be noted that the main body part of the nitrogen spring 350 is located inside the lower die base 320, and only the telescopic end of the nitrogen spring 350 extends out of the top surface of the lower die base 320. In the open die state, the nitrogen spring 350 jacks up the lower template 340, and the lower template 340 is separated from the lower die base 320, and the ejector pin 370 does not extend out of the top surface of the lower template 340; When the upper die 310 presses downward and jointly compresses the strip 200 with the lower template 340, the upper die 310 continues to press downward, squeezing the strip 200, thereby squeezing the lower template 340, causing the lower template 340 to move downward, and the nitrogen spring 350 is compressed until the lower template 340 contacts the lower die base 320, completing the embossing of the strip 200. During this process, the top end of the ejector pin 370 gradually pierces into the strip 200 and pushes the formed protrusion 1221 into the fourth guiding groove 312; The second sheet material 122 formed in this way has better quality and higher precision. If, in the mold - opening state, the ejector pin 370 extends out of the top surface of the lower template 340, when the upper die 310 presses down and the ejector pin 370 pierces into the strip 200, the lower template 340 does not initially contact the strip 200, which will cause a large - area deformation of the strip 200. In this deformed state, the edge of the strip 200 will first contact the lower template 340, and then the upper die 310 and the lower template 340 jointly press the strip 200 to complete the shaping. After blanking, the quality and precision of the formed second sheet material 122 will both decrease; The second positioning groove can protect the ejector pin 370, and as the ejector pin 370 gradually pierces into the strip 200, the ejector pin 370 is not likely to bend or break.

[0055] Embodiment 12: As an optimization of Embodiment 11, as Figure 9 、 Figure 20 and Figure 21 shown, in S2, a plurality of second sheet materials 122 and a first sheet material 121 are sequentially placed into the pressing tooling 400, and the pressing tooling 400 is controlled to press the placed second sheet materials 122 and the first sheet material 121 to form an arc - shaped column 100. In S3, a welding molten pool is formed by welding on the outer - ring side wall 141 and the inner - ring side wall 142 of the arc - shaped column 100 through an external laser - welding robotic arm.

[0056] It should be noted that S2 can also be completed in the progressive die of S1. Laminating is carried out while blanking, and the arc - shaped column 100 after lamination falls from the progressive die. Then, the outer - ring side wall 141 and the inner - ring side wall 142 of the arc - shaped column 100 are welded by an external laser - welding robotic arm. At this time, the coating of the hot - melt adhesive in S2 is also completed in the progressive die. There is a glue path in the progressive die. Every time the strip 200 moves one station, an appropriate amount of hot - melt adhesive gushes out from the glue outlet of the glue path. When the progressive die is closed, the strip 200 contacts the hot - melt adhesive, and the hot - melt adhesive adheres to the surface of the strip 200, thus completing the coating of the hot - melt adhesive. By controlling the position of the glue outlet, the coating area 1227 of the hot - melt adhesive is controlled.

[0057] In this embodiment, the first connecting member 144 of the arc - shaped column 100 is a tenon with a dovetail - shaped structure. The part of the second sheet material 122 corresponding to the tenon includes a tenon top surface 1224, a tenon end surface 1225, and two tenon side surfaces 1226. The tenon end surface 1225 and the tenon side surfaces 1226 are both perpendicular to the tenon top surface 1224, and the coating area 1227 is the area of the tenon top surface 1224 close to the tenon end surface 1225; The pressing tooling 400 includes a support table 410, a mounting frame 420, a positioning cushion block 430, an oil cylinder 450 and a pressing head 460. The positioning cushion block 430 and the mounting frame 420 are both fixedly installed on the support table 410, and the positioning cushion block 430 is located between the support table 410 and the mounting frame 420. A positioning pin 440 that is slidably matched with the second through hole 1223 is installed on the positioning cushion block 430. The oil cylinder 450 is fixedly installed on the mounting frame 420, and the pressing head 460 is fixedly installed on the telescopic end of the oil cylinder 450. A guiding hole 461 that is slidably matched with the positioning pin 440 is formed on one side of the pressing head 460 close to the positioning cushion block 430; S3 includes the following steps: S31. Stack the required number of second sheets 122 on the positioning cushion block 430 and make the positioning pin 440 pass through the corresponding second through holes 1223. When stacking the second sheets 122, every time a second sheet 122 is placed, an appropriate amount of hot melt adhesive is dropped in the coating area 1227 by an external dispensing robotic arm; S32. Stack a first sheet 121 on the uppermost second sheet 122 and make the positioning pin 440 pass through the first through hole 1212; S33. Control the oil cylinder 450 to drive the pressing head 460 to move towards the positioning cushion block 430, apply a pressing force to the stacked multiple second sheets 122 and a first sheet 121, so that the protrusions 1221 are embedded in the blind slots 1222 or the through slots 1211 to obtain the arc-shaped column 100. At this time, the positioning pin 440 extends into the guiding hole 461; S34. Use an external laser welding robotic arm to weld two welding molten pools on the inner circumferential side wall 142 of the arc-shaped column 100 and two welding molten pools on the outer circumferential side wall 141 of the arc-shaped column 100; S35. Control the oil cylinder 450 to drive the pressing head 460 to move away from the positioning cushion block 430 to the initial position, and take out the arc-shaped column 100 from the pressing tooling 400.

[0058] Both the positioning cushion block 430 and the pressing head 460 are arc-shaped. In S33, when forming the arc-shaped column 100 by pressing, both the outer circumferential side wall 141 and the inner circumferential side wall 142 of the arc-shaped column 100 protrude from the outer surface of the positioning cushion block 430, and both the outer circumferential side wall 141 and the inner circumferential side wall 142 of the arc-shaped column 100 protrude from the outer surface of the pressing head 460, ensuring that when the external laser welding robotic arm welds welding molten pools on the outer circumferential side wall 141 and the inner circumferential side wall 142 of the arc-shaped column 100, it will not be interfered by the positioning cushion block 430 and the pressing head 460.

[0059] After pressing the stacked first sheet material 121 and second sheet material 122 by the pressing tooling 400 and then welding, the gap between the first sheet material 121 and the second sheet material 122, as well as the gap between adjacent second sheet materials 122, can be reduced. Filling the corresponding gaps with hot melt adhesive is beneficial to improving the integrity and quality of the arc-shaped column body 100. Moreover, since the hot melt adhesive is only dropped in the coating area 1227, when the arc-shaped column body 100 is formed after pressing, the hot melt adhesive will not flow into the welding groove 146, and will not affect the welding in S4 or the quality of the welding.

[0060] Embodiment 13: As an optimization of Embodiment 12, as Figure 22 and Figure 23 shown, in S4, four arc-shaped column bodies 100 are fixed by the positioning tooling 500. The positioning tooling 500 includes a support ring 510, a second positioning column 520, and a bolt 530. The support ring 510 is provided with a jack 511 and a threaded hole 512. The second positioning column 520 is inserted into the jack 511, and the bolt 530 is threadedly connected to the threaded hole 512; In S4, the arc-shaped column body 100 is preliminarily positioned by the second positioning column 520. The bolt 530 is screwed into the threaded hole 512 and tightened to fix the position of the arc-shaped column body 100. Then, the four arc-shaped column bodies 100 are welded and connected by welding to obtain the inertia ring 1.

[0061] It should be noted that when the arc-shaped column body 100 is placed on the support ring 510, the second positioning column 520 passes through the mounting hole 143 of the arc-shaped column body 100, thereby preliminarily positioning the arc-shaped column body 100. Then, the bolt 530 passes through the corresponding mounting hole 143 and is screwed into the threaded hole 512 until the bolt 530 is tightened, so as to fix the position of the arc-shaped column body 100. After the four arc-shaped column bodies 100 are all fixed, the inertia ring 1 in a closed ring structure is formed, and a welding groove 146 is formed in the mating connection area. By fixing the four arc-shaped column bodies 100 with the second positioning column 520 and the bolt 530, the roundness of the inertia ring 1 formed after welding can be ensured, and the annular surface of the formed inertia ring 1 is flat, ensuring that the accuracy and quality of the inertia ring 1 meet the requirements.

[0062] In this embodiment, one arc-shaped column body 100 is positioned by two second positioning columns 520 and one bolt 530. A gasket 540 is sleeved outside the screw rod of the bolt 530. After the bolt 530 is tightened, the gasket 540 is located between the head of the bolt 530 and the arc-shaped column body 100. The gasket 540 can play a role in dispersing stress, preventing the arc-shaped column body 100 from being squeezed and deformed when the bolt 530 is tightened; The inner diameter of the inner ring of the support ring 510 is larger than the inner diameter of the inner ring of the inertia ring 1, and the outer diameter of the outer ring of the support ring 510 is smaller than the outer diameter of the outer ring of the inertia ring 1. An avoidance groove 513 is provided at the top inner ring of the support ring 510 to prevent interference between the welding device and the support ring 510 during welding in the welding groove 146; After the four arc-shaped cylinders 100 are fixed on the positioning tooling 500, eight welding grooves 146 will be formed. Welding seams 130 are formed by welding in the eight welding grooves 146, and the four arc-shaped cylinders 100 can be welded and connected into a stable overall inertia ring 1.

[0063] Embodiment 14: As an optimization of Embodiment 13, as Figures 24 - 30 shown, in S5, the bonding layer of the inertia ring 1 is homogenized by the rotary heating device 600. The rotary heating device 600 includes a rotary disk 630 and a plurality of positioning disks 640 rotatably connected to the rotary disk 630; In S5, the rotary disk 630 revolves around its own center line, and the positioning disk 640 rotates around its own center line, so that the bonding layer is homogenized.

[0064] It should be noted that the rotary heating device 600 includes a bracket 610. A motor 620 is fixedly installed on the bracket 610. The output end of the motor 620 is drivingly connected to a rotary disk 630. A plurality of positioning disks 640 are rotatably connected to the rotary disk. The plurality of positioning disks 640 are circumferentially and arrayedly distributed around the center line of the rotary disk 630; Adjacent positioning disks 640 are separated by a partition plate 631. The partition plate 631 is fixedly installed on the rotary disk 630. A sealing cover 650 is detachably installed on the bracket 610. The sealing cover 650 is provided with an air inlet 661 and an air outlet 662; The positioning disk 640 is provided with at least two screw holes 641. The inertia ring 1 is fixed on the positioning disk 640 by screws 642. A plurality of disk body blades 643 are fixedly installed on the outer circle of the positioning disk 640 and are circumferentially and arrayedly distributed along its center line; In S5, the screw 642 is passed through the mounting hole 143 of the inertia ring 1 and screwed into the screw hole 641 and tightened, so as to fix the inertia ring 1 on the positioning disk 640. After fixing a plurality of inertia rings 1, the sealing cover 650 is covered. The air inlet 661 of the sealing cover 650 is connected to a hot air gun, and the motor 620 is started to drive the rotary disk 630 to rotate, so as to drive a plurality of inertia rings 1 to revolve around the center line of the rotary disk 630. The hot air blows towards the disk body blades 643, so that the positioning disk 640 drives the inertia ring 1 to rotate along the center line of the positioning disk 640. The heat of the hot air melts and flows the bonding layer. The inertia ring 1 rotates and revolves, so that the bonding layer is homogenized.

[0065] In this embodiment, the first connecting member 144 of the arc-shaped column 100 is a tenon with a dovetail structure. Hot air is continuously introduced into the sealing cover 650 through a hot air gun to maintain the temperature inside the sealing cover 650, ensuring that the bonding layer can be melted. Cold air or excess gas is discharged through the exhaust port 662. When the inertia ring 1 rotates around its axis and revolves around the center, under the action of centrifugal force, the hot melt adhesive diffuses evenly. After the hot melt adhesive between adjacent sheets 120 melts, it flows back and forth in the gap between adjacent sheets 120. Moreover, the hot melt adhesive in the larger gap between adjacent sheets 120 flows out and tends to fill the smaller gaps between adjacent sheets 120, increasing the contact area between the hot melt adhesive and the sheets 120, thereby enhancing the connection strength between adjacent sheets 120. In addition, the melted hot melt adhesive between adjacent sheets 120 diffuses outward with the coating area 1227 as the center under the action of centrifugal force. Some of the hot melt adhesive between adjacent sheets 120 will flow into the tiny gap between the tenon and the mortise, thus enhancing the connection strength between adjacent arc-shaped columns 100. After the hot melt adhesive between the tenon and the mortise melts, it flows back and forth in the gap between the tenon and the mortise. Moreover, the hot melt adhesive in the larger gap between the tenon and the mortise flows out and tends to fill the smaller gaps between the tenon and the mortise. During this process, the hot melt adhesive will flow from the end face 1225 of the tenon to the side face 1226 of the tenon, increasing the contact area between the hot melt adhesive and the tenon and the mortise, thereby further enhancing the connection strength between adjacent arc-shaped columns 100. Since the inertia ring 1 rotates during operation and mainly needs to resist centrifugal force, the connection strength between adjacent arc-shaped columns 100 is improved. Under the action of centrifugal force, the arc-shaped columns 100 are less likely to be pulled off, and the inertia ring 1 is less likely to be damaged, thus improving the quality of the inertia ring 1. After the inertia ring 1 rotates with the rotating disk 630 and the positioning disk 640 for a preset time, the homogenization treatment of the bonding layer is completed. The hot air gun is removed from the air inlet 661, and the sealing cover 650 is opened. The homogenized hot melt adhesive solidifies to form a uniform bonding layer, and the contact area between the bonding layer and the sheets 120, the tenon, and the mortise increases, further improving the overall performance of the inertia ring 1.

[0066] The bracket 610 is provided with a protruding platform 611 that is snap-connected to the sealing cover 650. The rotating disk 630 is located above the protruding platform 611. The protruding platform 611 and the sealing cover 650 enclose a sealed space, and the inertia ring 1 is located in the sealed space. The outer ring of the protruding platform 611 is sleeved with a sealing ring, thus achieving a sealing effect between the protruding platform 611 and the sealing cover 650. With such a design, the disassembly and assembly of the sealing cover 650 and the bracket 610 are very convenient. A convex post 632 is provided at the center of the rotating disk 630. All the partition plates 631 are fixedly connected to the convex post 632. The convex post 632 and the partition plates 631 divide the sealed space into multiple regions. A positioning disk 640 is rotatably installed in each region, thereby preventing interference between multiple positioning disks 640 when they rotate simultaneously. The blowing direction of the hot air is along the tangential direction of the rotating disk 630. Under the restriction of the sealing cover 650, the partition plates 631 and the convex post 632, the hot air circulates around the inner circumferential side wall of the sealing cover 650. By blowing the disk body blades 643, all the positioning disks 640 are driven to rotate, thereby driving all the inertia rings 1 to rotate about the center lines of their respective positioning disks 640; An installation groove 633 is provided at the top of the rotating disk 630. A rotating shaft 644 is provided at the bottom of the positioning disk 640. The rotating shaft 644 is rotatably connected to the installation groove 633 through a bearing. When the hot air blows on the disk body blades 643, it is more conducive to realizing the rotation of the positioning disk 640, thereby driving the inertia ring 1 to rotate.

[0067] The embodiments of the invention have been described above in conjunction with the accompanying drawings. However, the present embodiment is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present embodiment, those of ordinary skill in the art can also make many forms without departing from the purpose of the present embodiment and the scope protected by the claims, and all of them fall within the protection scope of the present embodiment.

Claims

1. An inertia ring, characterized in that, Including: A plurality of arc-shaped cylinders (100), the plurality of arc-shaped cylinders (100) are sequentially connected end to end to form an inertia ring (1) with a closed ring structure. At least two connecting parts (110) are provided on the outer side wall (141) and the inner side wall (142) of the arc-shaped cylinder (100). The arc-shaped cylinder (100) includes a plurality of sheets (120) stacked along the axial direction of the inertia ring (1). The plurality of sheets (120) of the same arc-shaped cylinder (100) are connected through the connecting parts (110), and the plurality of sheets (120) are continuously stamped on a strip (200). The plurality of sheets (120) of the same arc-shaped cylinder (100) overlap along the axial direction of the inertia ring (1) and are connected through a fitting structure. A convex structure (1221) and a groove fitting connection structure are provided between the sheets (120) adjacent in the up and down direction. The fitting connection structure is used to limit the lateral misalignment between the sheets (120).

2. The inertia ring according to claim 1, wherein The sheet (120) at the uppermost position is the first sheet (121), and the groove on the first sheet (121) is a through groove (1211); the sheet (120) below the first sheet (121) is the second sheet (122), and the groove on the second sheet (122) is a blind groove (1222). The second sheet (122) is provided with the convex structure (1221) that cooperates with the blind groove (1222) or the through groove (1211).

3. An inertia ring according to claim 2, characterized in that, Each inertia ring (1) includes four arc-shaped cylinders (100). The arc-shaped cylinder (100) has a mounting hole (143), and the connecting part (110) is a welding pool.

4. An inertia ring according to claim 3, characterized in that, One end of the arc-shaped cylinder (100) is provided with a first connecting part (144), and the other end of the arc-shaped cylinder is provided with a second connecting part (145) that cooperates with the first connecting part (144). The area where two adjacent arc-shaped cylinders (100) are fitted and connected forms a welding groove (146). Two adjacent arc-shaped cylinders (100) are welded and connected, and a weld seam (130) is formed in the welding groove (146).

5. An inertia ring according to claim 4, characterized in that, The first connecting part (144) is set as a tenon head with a dovetail structure, the second connecting part (145) is set as a mortise that cooperates with the tenon head, and the adjacent sheets (120), as well as between the tenon head and the mortise, are connected through an adhesive layer.

6. An inertia ring according to claim 4, characterized in that, The first connecting part (144) is set as a convex head with an arc-shaped structure, and the second connecting part (145) is set as a notch that cooperates with the convex head.

7. A die stamping and welding forming process for an inertia ring according to claim 5, characterized in that, Including the following steps: S1. Manufacturing the sheet (120): The strip (200) forms the sheet (120) through a stamping die. S2. Stacking sheets: Apply a hot melt adhesive on the sheet (120) formed in S1, and stack multiple sheets to form the arc-shaped cylinder (100). S3. Weld the arc-shaped column body (100): Coat hot melt adhesive on the end face where the first connecting piece (144) and the second connecting piece (145) are fitted, and form the welding molten pool by welding on the outer ring side wall (141) and the inner ring side wall (142) through an external laser welding robot arm; S4. Weld the inertia ring (1): After splicing and positioning the four arc-shaped column bodies (100), weld the four arc-shaped column bodies (100) into the inertia ring (1); S5. Homogenize the bonding layer of the inertia ring (1).

8. A die stamping and welding forming process for an inertia ring according to claim 7, characterized in that, The S1 is completed by a multi-station progressive die, and the progressive die includes a punching die, a grooving die, a coining die (300) and a blanking die. The S1 includes the following steps: S11. Punch holes in the strip (200) through the punching die; S12. Cut grooves in the strip (200) through the grooving die; S13. Coin the strip (200) through the coining die (300); S14. Blank the strip (200) through the blanking die. After blanking the grooved part of the strip (200), the first sheet material (121) is formed, and after blanking the coined part of the strip (200), the second sheet material (122) is formed.

9. A die stamping and welding forming process for an inertia ring according to claim 8, characterized in that, The coining die (300) includes an upper die (310), a lower die base (320), a lower template (340), a first positioning post (360) and a thimble (370). The lower template (340) is in sliding and guiding cooperation with the lower die base (320). The first positioning post (360) and the thimble (370) are both fixedly installed on the lower die base (320). The lower template (340) is provided with a first guiding groove (341) that slidably cooperates with the first positioning post (360) in a penetrating manner; In the open die state, the first positioning post (360) extends out of the top surface of the lower template (340). The lower template (340) is provided with a second guiding groove (342) that slidably cooperates with the thimble (370) in a penetrating manner. The upper die (310) is provided with a third guiding groove (311) that slidably cooperates with the first positioning post (360), and the upper die (310) is provided with a fourth guiding groove (312) corresponding to the thimble (370); In the S13, the upper die (310) and the lower template (340) are closed to coin the strip (200).

10. A die stamping and welding forming process for an inertia ring according to claim 9, characterized in that, The coining die (300) further includes a nitrogen spring (350) fixedly installed on the lower die base (320). The telescopic end of the nitrogen spring (350) is fixedly connected to the lower template (340). In the open die state, the top end of the thimble (370) is located in the second guiding groove (342); In S13, after the upper die (310) and the lower template (340) initially compress the strip (200), the upper die (310) continues to move downward, driving the lower template (340) to move downward synchronously, so that the top end of the ejector pin (370) protrudes from the top surface of the lower template (340) and penetrates into the strip (200).

11. A die stamping and welding forming process for an inertia ring according to claim 7, characterized in that, In S4, four of the arc-shaped cylinders (100) are fixed by a positioning tooling (500). The positioning tooling (500) includes a support ring (510), a second positioning post (520), and a bolt (530). The support ring (510) is provided with a jack (511) and a threaded hole (512). The second positioning post (520) is inserted into the jack (511), and the bolt (530) is threadedly connected to the threaded hole (512). In S4, the arc-shaped cylinder (100) is preliminarily positioned by the second positioning post (520). The bolt (530) is screwed into the threaded hole (512) and tightened to fix the position of the arc-shaped cylinder (100). Then, the four arc-shaped cylinders (100) are welded together to obtain the inertia ring (1).

12. A die stamping and welding forming process for an inertia ring according to claim 7, characterized in that, In S5, the bonding layer of the inertia ring (1) is homogenized by a rotary heating device (600). The rotary heating device (600) includes a rotating disk (630) and a plurality of positioning disks (640) rotatably connected to the rotating disk (630). In S5, the rotating disk (630) revolves around its own center line, and the positioning disk (640) rotates around its own center line, so that the bonding layer is homogenized.

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