Inertia ring and die stamping and welding forming process thereof

Abstract

The present invention relates to the technical field of die stamping and forming of inertia rings, and discloses an inertia ring and its die stamping and welding forming process, wherein the inertia ring comprises: a plurality of arcuate cylinders, wherein the plurality of arcuate cylinders are sequentially connected end to end to form an inertia ring with a closed ring structure, wherein the outer ring sidewall and the inner ring sidewall of the arcuate cylinder are each provided with at least two connecting portions, and the arcuate cylinder comprises a plurality of sheets stacked along the axial direction of the inertia ring, wherein the plurality of sheets of the same arcuate cylinder are connected by connecting portions, and the plurality of sheets are formed by continuous stamping on a material strip. By using the inertia ring and its die stamping and welding forming process described in the present invention, the sheet is manufactured by continuously stamping and blanking on a metal steel strip, and then the arcuate cylinder and the inertia ring are formed by assembly processing, which greatly improves the utilization rate of the material strip and reduces the production cost of the inertia ring. Moreover, the sheet is produced by continuous stamping, and the production efficiency of the sheet is extremely high, thereby greatly improving the production efficiency of the inertia ring.

Description

Technical Field

[0001] The invention relates to the technical field of inertia rings formed by die stamping, and more particularly 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 system's rotational inertia. Rotational inertia is a measure of the inertia of an object during rotational motion and is related to the object's mass distribution and rotation radius. By increasing or decreasing the rotating mass, the inertia ring changes the system's inertial characteristics, thereby optimizing dynamic response and stability. It is widely used in industrial automation, transportation, aerospace and other fields.

[0003] The existing forming method of inertia rings is usually to first use forging equipment to forge a blank, and then use machine tools to turn, drill and other processing on the blank. The production process of inertia rings is complicated. Due to the precision requirements of machining, a relatively large machining allowance needs to be reserved. A large amount of excess material will be removed during the production process, resulting in low utilization rate of raw materials. Since drilling holes needs to be drilled one by one during machining, and the position of each hole needs to be located, the combined time of positioning and drilling leads to 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 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-mentioned purpose, the technical solution of the present invention is to provide an inertia ring, comprising: a plurality of arc-shaped cylinders, wherein the plurality of arc-shaped cylinders are connected end to end in sequence to form an inertia ring with a closed ring structure, the outer ring side wall and the inner ring side wall of the arc-shaped cylinder are each provided with at least two connecting parts, the arc-shaped cylinder comprises a plurality of sheets stacked along the axial direction of the inertia ring, the plurality of sheets of the same arc-shaped cylinder are connected by the connecting parts, and the plurality of sheets are formed by continuous stamping on a material strip.

[0006] By using the inertia ring described in the present invention, sheet materials are manufactured by continuous stamping on a metal steel strip, and then an arc-shaped column and an inertia ring are formed through assembly processing, thereby greatly improving the utilization rate of the material strip and reducing the production cost of the inertia ring. Moreover, the sheet materials are produced by continuous stamping, and the production efficiency of the sheet materials is extremely high, thereby greatly improving the production efficiency of the inertia ring. In addition, by adjusting the number of stacked sheet materials, the weight of the inertia ring can be adjusted to adapt to the needs of different inertia rings, which is conducive to the adaptive adjustment of the inertia ring.

[0007] Preferably, multiple sheets of the same arc-shaped column overlap axially along the inertia ring and are connected by a chimeric structure. Protrusion and groove chimeric connection structures are provided between vertically adjacent sheets to limit lateral misalignment between the sheets. This design facilitates precise stacking of multiple sheets and improves the connection strength between adjacent sheets.

[0008] Preferably, the topmost sheet is a first sheet, and the groove on the first sheet is a through groove; the sheet below the first sheet is a second sheet, and the groove on the second sheet is a blind groove, and the second sheet is provided with a protrusion that mates with the blind groove or the through groove. This design makes the upper and lower surfaces of the inertia ring flat, facilitating stacking and transportation of the inertia ring.

[0009] Preferably, each of the inertia rings comprises four arc-shaped columns, each of which has a mounting hole, and the connecting portion is a welding pool. This design can ensure both a high utilization rate of the material strip and a high production efficiency of the inertia ring.

[0010] Preferably, a first connector is provided at one end of the arc-shaped column, and a second connector that mates with the first connector is provided at the other end. A welding groove is formed in the area where two adjacent arc-shaped columns are connected. The two adjacent arc-shaped columns are welded together, forming a weld seam within the welding groove. This design ensures the connection strength of the two adjacent arc-shaped columns through welding, thereby ensuring the overall quality of the inertia ring.

[0011] Preferably, the first connecting member is configured as a dovetail-shaped tenon, and the second connecting member is configured as a mortise that cooperates with the tenon. This design is beneficial to improving the quality of the inertia ring production.

[0012] Preferably, the first connecting member is configured as an arc-shaped protrusion, and the second connecting member is configured as a recess that mates with the protrusion. Adjacent sheets, as well as the tenons and mortises, are connected by an adhesive layer. This design improves the cost-effectiveness of inertia ring production.

[0013] A die stamping and welding forming process for an inertia ring comprises the following steps:

[0014] S1, making the sheet: the material strip is formed into the sheet by a stamping die;

[0015] S2, lamination: coating the sheet material formed in S1 with hot melt adhesive, and stacking multiple sheets to form the arc-shaped column;

[0016] S3, welding the arc-shaped column: applying hot melt adhesive on the end surfaces of the first connecting member and the second connecting member, and welding the outer ring side wall and the inner ring side wall by an external laser welding robot arm to form the welding pool;

[0017] S4, welding the inertia ring: after splicing and positioning the four arc-shaped cylinders, weld the four arc-shaped cylinders into the inertia ring;

[0018] S5. Performing a homogenization treatment on the bonding layer of the inertia ring.

[0019] With this design, the production process of the inertia ring is simpler and more convenient.

[0020] Preferably, S1 is completed by a multi-station progressive die, wherein the progressive die includes a punching die, a notching die, a embossing die and a blanking die, and S1 includes the following steps:

[0021] S11, punching holes in the material strip using the punching die;

[0022] S12, punching grooves on the material strip using the punching die;

[0023] S13, embossing the material strip using the embossing mold;

[0024] S14. Punch the material strip by the punching die to form the first sheet material after punching out the notched portion of the material strip, and to form the second sheet material after punching out the convex portion of the material strip.

[0025] Such a design is conducive to improving the production efficiency of the sheet material, thereby further improving the production efficiency of the inertia ring.

[0026] Preferably, the embossing mold includes an upper mold, a lower mold base, a lower mold plate, a first positioning column and an ejector pin. The lower mold plate is slidably guided with the lower mold base. The first positioning column and the ejector pin are fixedly mounted on the lower mold base. The lower mold plate is provided with a first guide groove that slidably cooperates with the first positioning column.

[0027] In the mold open state, the first positioning post extends out of the top surface of the lower mold plate, the lower mold plate is provided with a second guide groove that is slidably engaged with the ejector pin, the upper mold is provided with a third guide groove that is slidably engaged with the first positioning post, and the upper mold is provided with a fourth guide groove corresponding to the ejector pin;

[0028] In the step S13, the upper mold and the lower mold plate are engaged to emboss the material strip. In this design, the upper mold is controlled to move toward the lower mold base until the lower mold plate and the lower mold base are engaged, thereby completing the embossing process of the sheet material.

[0029] Preferably, the embossing mold further comprises a nitrogen spring fixedly mounted on the lower mold base, the telescopic end of the nitrogen spring being fixedly connected to the lower mold plate, and in the mold open state, the top end of the ejector pin is located in the second guide groove;

[0030] In S13, after the upper mold and the lower mold initially press the material strip, the upper mold continues to move downward, driving the lower mold to move downward synchronously, so that the top of the ejector pin extends out of the top surface of the lower mold and pushes into the sheet. This design is conducive to improving the quality and precision of the manufactured second sheet.

[0031] Preferably, in S4, the four arc-shaped columns are fixed by a positioning fixture, the positioning fixture comprising a support ring, a second positioning column and a bolt, the support ring is provided with a socket and a threaded hole, the second positioning column is plugged into the socket, and the bolt is threadedly connected to the threaded hole;

[0032] In S4, the arcuate cylinder is initially positioned using the second positioning post, the bolt is screwed into the threaded hole and tightened to secure the position of the arcuate cylinder, and then the four arcuate cylinders are welded together to form the inertia ring. This design, in which the four arcuate cylinders are positioned using the second positioning post and bolts, ensures that the precision and quality of the inertia ring formed after welding meet the requirements.

[0033] Preferably, in S5, the bonding layer of the inertia ring is homogenized by a rotary heating device, wherein the rotary heating device comprises a rotary disk and a plurality of positioning disks rotatably connected to the rotary disk;

[0034] In S5 , the rotating disk revolves around its own center line, and the positioning disk rotates around its own center line, so that the bonding layer is uniform.

[0035] The beneficial effects of the present invention are:

[0036] By using the inertia ring and its mold stamping and welding forming process described in the present invention, sheet materials are manufactured by continuous stamping and blanking on a metal steel strip, and then an arc-shaped column and an inertia ring are formed through assembly processing, thereby greatly improving the utilization rate of the material strip and reducing the production cost of the inertia ring. Moreover, the sheet materials are produced by continuous stamping, and the production efficiency of the sheet materials is extremely high, thereby greatly improving the production efficiency of the inertia ring. Moreover, by adjusting the number of stacked sheet materials, the weight of the inertia ring can be adjusted to adapt to the needs of different inertia rings, which is beneficial to the adaptive adjustment of the inertia ring. In addition, the mold stamping and welding forming process of the inertia ring mainly uses stamping technology and welding technology, and the production process of the inertia ring is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the overall structure of the inertia ring (the first connecting piece is a tenon);

[0038] Figure 2 is a schematic diagram of the three-dimensional structure of the arc-shaped column (the first connecting member is a tenon);

[0039] Figure 3 is a top view of an arc-shaped column (the first connecting member is a tenon);

[0040] Figure 4 This is a schematic diagram of the three-dimensional structure of the inertia ring (the first connecting member is a convex head);

[0041] Figure 5 is another schematic diagram of the three-dimensional structure of the arc-shaped cylinder (the first connecting member is a convex head);

[0042] Figure 6 It is a structural diagram of strip processing;

[0043] Figure 7 It is a schematic diagram of the structure after the strip is punched;

[0044] Figure 8 1 is a schematic diagram of the three-dimensional structure of the first sheet;

[0045] Figure 9 1 is a schematic diagram of a first three-dimensional structure of the second sheet;

[0046] Figure 10 1 is a schematic diagram of a second three-dimensional structure of a second sheet;

[0047] Figure 11 This is a top view of the four arc-shaped columns after they are connected (without welding in the welding groove to form a weld);

[0048] Figure 12 This is a test force-displacement curve obtained after testing the inertia ring provided with a bonding layer in Example 6;

[0049] Figure 13 This is a test force-displacement curve obtained after testing in Example 6 in which the inertia ring is not provided with a bonding layer;

[0050] Figure 14 is a test force-displacement curve obtained after testing in Example 7;

[0051] Figure 15 It is a schematic diagram of the three-dimensional structure of the convex die;

[0052] Figure 16 It is a schematic diagram of the main view of the convex die;

[0053] Figure 17 It is a schematic diagram of the partial three-dimensional structure of the convex mold (excluding the upper mold and lower mold plate);

[0054] Figure 18 It is a schematic diagram of the three-dimensional structure of the lower template;

[0055] Figure 19 It is a schematic diagram of the three-dimensional structure of the upper mold;

[0056] Figure 20 It is a schematic diagram of the three-dimensional structure of the pressing tool;

[0057] Figure 21 Schematic diagram of the three-dimensional structure of the indenter;

[0058] Figure 22 It is a schematic diagram of the three-dimensional structure of the positioning tool;

[0059] Figure 23 1 is a schematic diagram of the three-dimensional structure of the support ring;

[0060] Figure 24 It is a schematic diagram of the three-dimensional structure of the rotary heating device;

[0061] Figure 25 It is a schematic diagram of the main cross-section of the rotary heating device;

[0062] Figure 26 It is a schematic diagram of a partial three-dimensional structure of the rotary heating device (excluding the sealing cover);

[0063] Figure 27 is a schematic diagram of the three-dimensional structure of the bracket;

[0064] Figure 28 It is a schematic diagram of the three-dimensional structure of the rotating disk;

[0065] Figure 29 It is a schematic diagram of the three-dimensional structure of the positioning plate;

[0066] Figure 30 It is a schematic diagram of the three-dimensional structure in which the positioning plate fixes the inertia ring through screws.

[0067] In the figure: 1. Inertia ring;

[0068] 100, arc-shaped cylinder; 110, connecting portion; 120, sheet; 121, first sheet; 1211, through-slot; 1212, first through-hole; 122, second sheet; 1221, protrusion; 1222, blind slot; 1223, second through-hole; 130, weld; 141, outer ring sidewall; 142, inner ring sidewall; 143, mounting hole; 144, first connecting member; 145, second connecting member; 146, welding slot;

[0069] 200, material strip; 210, blanking port; 220, overlap;

[0070] 300, embossing die; 310, upper die; 311, third guide groove; 312, fourth guide groove; 313, fifth guide groove; 320, lower die base; 330, guide post; 340, lower die plate; 341, first guide groove; 342, second guide groove; 350, nitrogen spring; 360, first positioning post; 370, ejector pin;

[0071] 400, clamping tool; 410, support platform; 420, mounting frame; 430, positioning pad; 440, positioning pin; 450, oil cylinder; 460, pressure head; 461, guide hole;

[0072] 500, positioning fixture; 510, support ring; 511, socket; 512, threaded hole; 513, avoidance groove; 520, second positioning column; 530, bolt; 540, gasket;

[0073] 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

[0074] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be varied without departing from the scope of protection of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0075] In order to better understand the present invention, Figure 1-Figure 30 An inertia ring and a die stamping and welding forming process thereof of the present invention are described in detail.

[0076] Example 1:

[0077] like Figure 1-Figure 7 As shown, an inertia ring includes: multiple arc-shaped cylinders 100, which are connected end to end in sequence to form an inertia ring 1 with a closed ring structure, and the outer ring side wall 141 and the inner ring side wall 142 of the arc-shaped cylinder 100 are each provided with at least two connecting parts 110. The arc-shaped cylinder 100 includes multiple sheets 120 stacked along the axial direction of the inertia ring 1, and the multiple sheets 120 of the same arc-shaped cylinder 100 are connected by the connecting parts 110. The multiple sheets 120 are continuously stamped on the material strip 200.

[0078] It should be noted that two adjacent arcuate 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 arcuate cylinder 100 and the thickness direction of the sheet material 120. That is, multiple sheets 120 are stacked along their own thickness direction to form the arcuate cylinder 100. The outer ring side wall 141 and the inner ring side wall 142 of the arcuate cylinder 100 can be welded or glued to form a connecting portion 110, so that multiple sheets 120 of the same arcuate cylinder 100 are rigidly connected.

[0079] The material strip 200 is a metal steel strip. After the sheet material 120 is punched out from the material strip 200, a blanking opening 210 is formed on the material strip 200. The unused residual material between two adjacent blanking openings 210 is an overlap 220. The sheet material 120 is formed by continuous punching on the metal steel strip. The overlap 220 value (the size of the overlap 220) is small. Compared with the production method of first forging the blank and then processing it with a machine tool, the utilization rate of the raw materials is higher, which is conducive to reducing production costs.

[0080] 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 processing, thereby greatly improving the utilization rate of the material strip 200 and reducing the production cost of the inertia ring 1. Moreover, the sheet material 120 is produced by continuous stamping, and the production efficiency of the sheet material 120 is extremely high, thereby greatly improving the production efficiency of the inertia ring 1. In addition, by adjusting the number of stacked sheets 120, the weight of the inertia ring 1 can be adjusted to adapt to the needs of different inertia rings 1, which is beneficial to the adaptive adjustment of the inertia ring 1.

[0081] Example 2:

[0082] As an optimization of Example 1, Figure 2 、 Figure 8 、 Figure 9 and Figure 10 As shown, multiple sheets 120 of the same arc-shaped cylinder 100 overlap axially along the inertia ring 1 and are connected by a chimeric structure. A protrusion 1221 and a groove chimeric connection structure are provided between the adjacent sheets 120 in the vertical direction. The chimeric connection structure is used to limit the lateral misalignment between the sheets 120.

[0083] It should be noted that by setting the protrusion 1221 and the groove interlocking connection structure, it is beneficial to the precise stacking of multiple sheets 120, and the connection strength between two adjacent sheets 120 is improved, the ability of the arc column 100 to resist interlayer separation is improved, and the sheets 120 are not prone to lateral dislocation.

[0084] Example 3:

[0085] As an optimization of Example 2, Figure 2 、 Figure 8 、 Figure 9 and Figure 10 As shown, the sheet material 120 located at the top 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, and the groove on the second sheet material 122 is a blind groove 1222, and the second sheet material 122 is provided with a protrusion 1221 that cooperates with the blind groove 1222 or the through groove 1211.

[0086] The second sheet 122 is formed with a protrusion 1221 on one side of the second sheet 122 by stamping, and a blind groove 1222 is formed at a corresponding position on the other side of the second sheet 122. The protrusion 1221 and the blind groove 1222 of the stacked second sheet 122 are connected by shape fit to form a stable interlocking connection structure. The cooperation between the protrusion 1221 and the blind groove 1222, as well as the cooperation between the protrusion 1221 and the through groove 1211, can improve the overall strength of the arc column 100. In addition, since the top sheet 120 is the first sheet 121, the protrusion 1221 of the second sheet 122 of the next layer is accommodated in the through groove 1211 of the first sheet 121. The upper and lower surfaces of the arc 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 between the inertia rings 1 is large, and it is not easy to shift or collide, which is conducive to the stacking and transportation of the inertia rings 1.

[0087] The ratio of the height of the protrusion 1221 to the thickness of the sheet 120 is 1:1.2~3, which can ensure the fitting strength of the protrusion 1221 and the blind groove 1222 or the through groove 1211. If the height of the protrusion 1221 is too small, the fitting strength of 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 cause difficulty in embedding the protrusion 1221 into the blind groove 1222 or the through groove 1211, affecting the assembly processing of the arc column 100.

[0088] In this embodiment, the second sheet material 122 is provided with a matching structure of four protrusions 1221 and four blind grooves 1222 , and the first sheet material 121 is provided with corresponding four through grooves 1211 .

[0089] Example 4:

[0090] As an optimization of Example 3, Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, each inertia ring 1 includes four arc-shaped columns 100 , each arc-shaped column 100 has a mounting hole 143 , and the connecting portion 110 is a welding pool.

[0091] It should be noted that if the number of arc-shaped cylinders 100 constituting an inertia ring 1 is less than four, the overlap 220 value will increase, thereby significantly reducing the utilization rate of the material strip 200. If the number of arc-shaped cylinders 100 constituting an inertia ring 1 is more than four, although the overlap 220 value will be reduced and the utilization rate of the material strip 200 will be slightly improved, more sheets 120 will be required to manufacture the same single inertia ring 1, and the assembly and processing will also take more time, resulting in a significant reduction in the production efficiency of the inertia ring 1 and a reduction in the cost-effectiveness of the production of the inertia ring 1. The preferred solution with four arc-shaped cylinders 100 for each inertia ring 1 has the highest cost-effectiveness, which can ensure both a high utilization rate of the material strip 200 and a high production efficiency of the inertia ring 1. The design of the mounting hole 143 is to facilitate the installation of the inertia ring 1.

[0092] The connecting portion 110 is configured as a weld pool. A weld pool is formed on the outer ring sidewall 141 and the inner ring sidewall 142 of the arc-shaped cylinder 100 by laser welding. One weld pool connects all the sheets 120 of the same arc-shaped cylinder 100 from top to bottom, ensuring the connection strength of the multiple sheets 120 and the integrity of the arc-shaped cylinder 100. The weld pool does not protrude from the outer ring sidewall 141 and the inner ring sidewall 142 of the arc-shaped cylinder 100, ensuring that the shape of the manufactured inertia ring 1 meets the design requirements.

[0093] Preferably, the weld pool on the outer ring sidewall 141 corresponds one-to-one to the weld pool on the inner ring sidewall 142, and the corresponding weld pools on the outer ring sidewall 141 and the inner ring sidewall 142 are in the same radial direction of the inertia ring 1. With this design, when the inertia ring 1 rotates to generate centrifugal force, the weld pools in the same radial direction can form a continuous stress transfer path, transmitting the centrifugal force to the entire inertia ring 1, reducing stress concentration, and facilitating improving the overall performance of the inertia ring 1.

[0094] In this embodiment, two welding pools are welded on the outer ring side wall 141 and the inner ring side wall 142 of each arc-shaped cylinder 100. The welding pool on one outer ring side wall 141, the welding pool on one inner ring side wall 142, and the axis of the inertia ring 1 are in the same plane; the welding pool on the other outer ring side wall 141, the welding pool on the other inner ring side wall 142, and the axis of the inertia ring 1 are in another plane.

[0095] Example 5:

[0096] As an optimization of Example 4, Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 11As shown, a first connecting member 144 is provided at one end of the arc column 100, and a second connecting member 145 that cooperates with the first connecting member 144 is provided at the other end of the arc column. A welding groove 146 is formed in the area where the two adjacent arc columns 100 are connected. The two adjacent arc columns 100 are welded together and a weld 130 is formed in the welding groove 146.

[0097] The provision of the first connecting member 144 and the second connecting member 145 facilitates the mating connection between two adjacent arc-shaped cylinders 100 to form an inertia ring 1 with a closed annular structure. The provision of the welding groove 146 prevents the weld 130 from protruding from the outer ring side wall 141 or the inner ring side wall 142 of the arc-shaped cylinder 100, thereby ensuring that the manufactured inertia ring 1 meets the design requirements.

[0098] 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 in the welding groove 146 by welding to connect two adjacent arc-shaped cylinders 100. The matching connection area of the inner ring side wall 142 and the matching connection area of the outer ring side wall 141 of the arc-shaped cylinder 100 are both formed with a welding groove 146. That is, after the inertia ring 1 is welded and assembled, four welds 130 are formed on the inner ring of the inertia ring 1 and four welds 130 are also formed on the outer ring of the inertia ring 1.

[0099] Example 6:

[0100] As an optimization of Example 5, Figure 1 、 Figure 2 、 Figure 3 、 Figure 12 and Figure 13 As shown, the first connecting member 144 is configured as a dovetail-shaped tenon, and the second connecting member 145 is configured as a mortise that cooperates with the tenon. Adjacent sheets 120 and the tenon and mortise are connected by an adhesive layer.

[0101] It should be noted that by providing an adhesive layer, the connection strength between adjacent sheets 120 and the connection strength between adjacent arc-shaped columns 100 can be improved. The cooperation between the tenon and the mortise can further improve the connection strength between two adjacent arc-shaped columns 100, thereby improving the pull-out resistance of the inertia ring 1.

[0102] After the two adjacent arc columns 100 are matched and connected, there is a gap in the mortise and tenon connection area. When welding in the welding groove 146, the arc column 100 at the welding groove 146 is rapidly heated and expanded, while the surrounding areas that are not directly heated (such as the part of the tenon located in the mortise) have a relatively low temperature and expand less. When welding is completed, the weld 130 and the arc column 100 at the welding groove 146 cool and shrink. Since it takes time for heat to be transferred from the welding groove 146 to the surrounding area, the cooling speed is relatively slow, and the arc column 100 has more time to undergo plastic deformation, especially the end of the arc column 100 with the mortise, which makes the plastic deformation more significant in the cooling stage, resulting in the shrinkage exceeding the expansion in the welding heating stage. The overall shrinkage of the mortise opening is reduced, and the gap in the matching connection area is closed, which is conducive 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 the two adjacent arc columns 100.

[0103] The inertia ring 1 with the first connecting member 144 being a dovetail tenon is subjected to a tensile test using an electro-hydraulic servo universal testing machine. During the test, two chucks are clamped on the inertia ring 1, and the line between the two chucks passes through the center of the inertia ring 1. The following results are obtained after the test: Figure 12 The test force-displacement curve shown in the figure is the test tensile force, and the displacement is the relative movement distance between the two chucks of the electro-hydraulic servo universal testing machine. The maximum pull-out resistance 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 conducive to improving the competitiveness of the product.

[0104] When no adhesive layer is provided between adjacent sheets 120 and between tenons and mortises, a tensile test is performed on the inertia ring 1 using an electro-hydraulic servo universal testing machine. Figure 13 The test force-displacement curve shown in FIG2 shows that the maximum pull-out force of the inertia ring 1 is measured to be 147.582 kN. This shows that the design of the bonding layer improves the pull-out force of the inertia ring 1 and improves the quality of the inertia ring 1.

[0105] Example 7:

[0106] As an optimization of Example 5, Figure 4 、 Figure 5 and Figure 14 As shown, the first connecting member 144 is configured as a convex head of an arc-shaped structure, and the second connecting member 145 is configured as a concave recess that cooperates with the convex head.

[0107] It should be noted that the first connecting member 144 is configured as a convex head with an arc-shaped structure, which makes it easier and more convenient to manufacture the mold required to produce the corresponding sheet material 120, and is conducive to reducing the production cost of the mold, thereby reducing the production cost of the inertia ring 1. The welding connection principle of the convex head and the concave head is the same as the welding principle of the tenon and the mortise in Example 6, and will not be repeated here.

[0108] The inertia ring 1 with the first connecting member 144 being an arc-shaped convex head was subjected to a tensile test using an electro-hydraulic servo universal testing machine. Figure 13 The test force-displacement curve shown in the figure shows that the maximum pull-out force of the inertia ring 1 is 134.909 kN. Although it is lower than the inertia ring 1 whose first connecting member 144 is a dovetail tenon, it is still much larger than the design requirement of 88 kN. The production cost of the mold required to produce the sheet 120 is lower, and the production and manufacturing of the inertia ring 1 is more cost-effective.

[0109] Example 8:

[0110] A die stamping and welding forming process for an inertia ring comprises the following steps:

[0111] S1, making the sheet 120: the material strip 200 is formed into the sheet 120 by a stamping die;

[0112] S2, lamination: coating the sheet 120 formed in S1 with hot melt adhesive, and stacking multiple sheets to form an arc-shaped column 100;

[0113] S3. Welding the arc-shaped column 100: Apply hot melt adhesive to the end surfaces of the first connecting member 144 and the second connecting member 145, and weld the outer ring side wall 141 and the inner ring side wall 142 to form a welding pool using an external laser welding robot arm;

[0114] S4. Welding the inertia ring 1: After the four arc-shaped cylinders 100 are spliced and positioned, the four arc-shaped cylinders 100 are welded to form the inertia ring 1;

[0115] S5. Performing a homogenization treatment on the bonding layer of the inertia ring 1.

[0116] It should be noted that in S2, hot melt adhesive is coated on both end portions of the sheet 120, which can increase the connection strength between adjacent sheets 120. In S3, hot melt adhesive is coated on the end faces where the tenon and mortise match, which can increase the connection strength between adjacent arc-shaped columns 100. The hot melt adhesive is only coated on the end faces. By reasonably controlling the amount of adhesive applied, the hot melt adhesive will not enter the welding groove 146, and will not affect the welding in S4 or the quality of the welding. The hot melt adhesive can be coated on the end faces where the tenon and mortise match by brushing, and the hot melt adhesive coated in S2 and S3 forms a bonding layer; the sheet 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, which greatly improves the production efficiency of the inertia ring 1.

[0117] Example 9:

[0118] like Figure 6 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 15 As shown, S1 is completed by a multi-station progressive die, which includes a punching die, a notching die, a convex die 300 and a blanking die. S1 includes the following steps:

[0119] S11, punching holes in the material strip 200 using a punching die;

[0120] S12, punching grooves on the material strip 200 using a punching die;

[0121] S13, embossing the material strip 200 using the embossing die 300;

[0122] S14 , punching the material strip 200 by a punching die, punching out the notched portion of the material strip 200 to form a first sheet 121 , and punching out the convex portion of the material strip 200 to form a second sheet 122 .

[0123] It should be noted that, since the material strip 200 is punched in S11, the first sheet 121 obtained after the punching in S14 has a first through hole 1212, and the second sheet 122 obtained has a second through hole 1223. After the first sheet 121 and the plurality of second sheets 122 are laminated, the first through hole 1212 and the second through holes 1223 correspond in position to each other, and the first through hole 1212 and the plurality of second through holes 1223 are combined to form the mounting hole 143.

[0124] The punching die, notching die, embossing die 300 and blanking die are all integrated on a progressive die. As the material strip 200 moves intermittently along the assembly line direction, the progressive die can complete the stamping processing of the first sheet 121 and the second sheet 122 without the need to frequently change the die for step-by-step processing, thereby improving the production efficiency of the sheet 120 and further improving the production efficiency of the inertia ring 1.

[0125] Example 10:

[0126] As an optimization of Example 9, Figures 15-19 As shown, the embossing mold 300 includes an upper mold 310, a lower mold base 320, a lower mold plate 340, a first positioning post 360 and an ejector pin 370. The lower mold plate 340 is slidably guided with the lower mold base 320. The first positioning post 360 and the ejector pin 370 are both fixedly mounted on the lower mold base 320. The lower mold plate 340 is provided with a first guide groove 341 that slidably cooperates with the first positioning post 360.

[0127] In the mold open state, the first positioning post 360 extends out of the top surface of the lower mold plate 340. The lower mold plate 340 is provided with a second guide groove 342 that slides with the ejector pin 370. The upper mold 310 is provided with a third guide groove 311 that slides with the first positioning post 360. The upper mold 310 is provided with a fourth guide groove 312 that corresponds to the ejector pin 370.

[0128] In S13 , the upper mold 310 and the lower mold plate 340 are closed to emboss the material strip 200 .

[0129] It should be noted that the embossing mold 300 also includes a plurality of guide posts 330, which are all fixedly mounted on the lower mold base 320. The lower mold plate 340 is slidably connected to the guide posts 330. The upper mold 320 is provided with a fifth guide groove 313 that slidably cooperates with the guide posts 330. During the process of closing the upper mold 310 and the lower mold plate 340, the guide posts 330 gradually extend into the fifth guide groove 313 and guide the closing of the upper mold 310 and the lower mold plate 340, ensuring that the fourth guide groove 312 of the upper mold 310 corresponds to the position of the ejector pin 370, thereby ensuring the accuracy of the embossing and improving the stability of the movement of the upper mold 320.

[0130] The guide post 330, the first positioning post 360, and at least a portion of the ejector pin 370 are located within the lower die base 320. At least two first positioning posts 360 are provided. The first positioning posts 360 cooperate with the holes punched out on the material strip 200 in S11 to position the material strip 200. The third guide groove 311 is used to accommodate the first positioning post 360 to prevent the first positioning post 360 from affecting the upper die 310 from pressing the material strip 200, thereby affecting the convexity of the material strip 200. The fourth guide groove 312 is used to accommodate the formed protrusion 1221.

[0131] The material strip 200 passes between the upper mold 310 and the lower mold plate 340. During the closing process of the upper mold 310 and the lower mold plate 340, the first positioning post 360 first passes through the hole punched in S11, thereby positioning the material strip 200 through the first positioning post 360, thereby improving the position accuracy of the formed protrusion 1221. Subsequently, the first positioning post 360 enters the third guide groove 311 and guides the downward movement of the upper mold 310 through sliding cooperation with the third guide groove 311, ensuring that the fourth guide groove 312 is located directly above the ejector pin 370.

[0132] The shape of the fourth guide groove 312 is complementary to the shape of the protrusion 1221, so that when the protrusion 1221 is pushed into the fourth guide groove 312, the outer contour of the protrusion 1221 is tightly fitted with the inner wall of the fourth guide groove 312. The radial constraint of the protrusion 1221 by the side wall of the fourth guide groove 312 limits the deformation of the protrusion 1221 during the pushing process, thereby ensuring the shape accuracy of the protrusion 1221.

[0133] The upper mold 310 and the lower mold plate 340 are closed, and the first positioning post 360 enters the fourth guide groove 312. The top surface of the strip 200 is in contact with the upper mold 310, and the bottom surface of the strip 200 is in contact with the lower mold plate 340. A portion of the ejector pin 370 is pushed into the strip 200, forming a blind groove 1222 on the bottom surface of the strip 200 and a protrusion 1221 on the top surface of the strip 200. The protrusion 1221 is pushed into the fourth guide groove 312. Subsequently, the upper mold 310 and the lower mold plate 340 are opened, and the strip 200 moves one station along the assembly line direction. The embossing mold 300 repeats the above steps to continuously emboss the strip 200.

[0134] The notching die and the embossing die 300 are arranged in sequence along the direction of the assembly line. The notching die performs a notch every time the material strip 200 moves N stations. When the notched area on the material strip 200 moves to the station of the embossing die 300, the through groove 1211 formed by the notching corresponds to the position of the ejector pin 370 of the embossing die 300. At this time, the upper die 310 and the lower die plate 340 are closed, and the ejector pin 370 will pass through the through groove 1211, and no protrusion 1221 and blind groove 1222 will be formed on the material strip 200; after S14 punches out the material strip 200, it will periodically punch out 1 first sheet 121 and (N-1) second sheets 122, and the value of N is the same as the number of sheets 120 contained in an arc cylinder 100.

[0135] Example 11:

[0136] As an optimization of Example 10, Figure 15-17 As shown, the embossing mold 300 further includes a nitrogen spring 350 fixedly mounted on the lower mold base 320. The telescopic end of the nitrogen spring 350 is fixedly connected to the lower mold plate 340. In the mold open state, the top end of the ejector pin 370 is located in the second guide groove 342.

[0137] In S13 , after the upper mold 310 and the lower mold 340 initially press the material strip 200 , the upper mold 310 continues to move downward, driving the lower mold 340 to move downward synchronously, so that the top of the ejector pin 370 extends out of the top surface of the lower mold 340 and pushes into the material strip 200 .

[0138] It should be noted that the main portion of the nitrogen spring 350 is located within the lower die base 320, and only the telescopic end of the nitrogen spring 350 extends beyond the top surface of the lower die base 320. In the mold open state, the nitrogen spring 350 lifts the lower die plate 340, separating the lower die plate 340 from the lower die base 320, and the ejector pin 370 does not extend beyond the top surface of the lower die plate 340.

[0139] After the upper die 310 is pressed downward and, together with the lower die plate 340, presses the material strip 200, the upper die 310 continues to press downward, squeezing the material strip 200, thereby squeezing the lower die plate 340, causing the lower die plate 340 to move downward. The nitrogen spring 350 is compressed until the lower die plate 340 contacts the lower die base 320, completing the embossing of the material strip 200. During this process, the top of the ejector pin 370 gradually penetrates into the material strip 200, and the formed protrusion 1221 is pushed into the fourth guide groove 312.

[0140] The second sheet 122 formed in this manner has better quality and higher precision. If, in the mold open state, the ejector pins 370 extend from the top surface of the lower mold plate 340, and the upper mold 310 presses down to push the ejector pins 370 into the material strip 200, the lower mold plate 340 initially does not contact the material strip 200, causing the material strip 200 to deform over a large area. Under this deformation condition, the edge of the material strip 200 will first contact the lower mold plate 340, and then the upper mold 310 and the lower mold plate 340 will jointly press the material strip 200 to complete the shaping. As a result, the quality and precision of the second sheet 122 formed after punching will be reduced.

[0141] The second positioning groove can protect the ejector pin 370 , and the ejector pin 370 is gradually pushed into the material strip 200 , and the ejector pin 370 is not easily bent or broken.

[0142] Example 12:

[0143] As an optimization of Example 11, Figure 9 、 Figure 20 and Figure 21 As shown, in S2, multiple second sheets 122 and one first sheet 121 are placed in the pressing tool 400 in sequence, and the pressing tool 400 is controlled to press the placed second sheets 122 and the first sheet 121 to form an arc column 100. In S3, an external laser welding robot arm is used to weld the outer ring side wall 141 and the inner ring side wall 142 of the arc column 100 to form a welding pool.

[0144] It should be noted that S2 can also be completed in the progressive die of S1, and the lamination is carried out at the same time as the punching. What falls from the progressive die is the arc column 100 with the completed lamination. The outer ring side wall 141 and the inner ring side wall 142 of the arc column 100 are then welded by an external laser welding robot arm. At this time, the coating of the hot melt adhesive in S2 is also completed in the progressive die. A glue path is provided in the progressive die. Every time the material strip 200 moves a work station, an appropriate amount of hot melt adhesive flows out from the glue outlet of the glue path. When the progressive die is closed, the material strip 200 contacts the hot melt adhesive, and the hot melt adhesive adheres to the surface of the material strip 200, thereby completing the coating of the hot melt adhesive. By controlling the position of the glue outlet, the coating interval 1227 of the hot melt adhesive is controlled.

[0145] In this embodiment, the first connecting member 144 of the arc-shaped column 100 is a dovetail-shaped tenon. The portion of the second sheet 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. The coating area 1227 is the area of the tenon top surface 1224 near the tenon end surface 1225.

[0146] The pressing tool 400 includes a support platform 410, a mounting frame 420, a positioning pad 430, a cylinder 450 and a pressing head 460. The positioning pad 430 and the mounting frame 420 are both fixedly mounted on the support platform 410, and the positioning pad 430 is located between the support platform 410 and the mounting frame 420. A positioning pin 440 that slidably cooperates with the second through hole 1223 is installed on the positioning pad 430. The cylinder 450 is fixedly mounted on the mounting frame 420. The pressing head 460 is fixedly mounted on the telescopic end of the cylinder 450, and a guide hole 461 that slidably cooperates with the positioning pin 440 is opened on the side of the pressing head 460 close to the positioning pad 430.

[0147] S3 includes the following steps:

[0148] S31. Stack the required number of second sheets 122 on the positioning pad 430, and make the positioning pins 440 pass through the corresponding second through holes 1223. When stacking the second sheets 122, each time a second sheet 122 is placed, an appropriate amount of hot melt adhesive is dripped into the coating area 1227 by the external glue-drip robot;

[0149] S32, stacking a first sheet 121 on the uppermost second sheet 122, and passing the positioning pin 440 through the first through hole 1212;

[0150] S33: Control the oil cylinder 450 to drive the pressing head 460 to move toward the positioning pad 430, applying a pressing force to the stacked second sheets 122 and the first sheet 121, so that the protrusion 1221 is embedded in the blind groove 1222 or the through groove 1211, thereby forming the arc-shaped column 100. At this time, the positioning pin 440 extends into the guide hole 461.

[0151] S34, using an external laser welding robot arm to weld the inner sidewall 142 of the arc-shaped column 100 to form two weld pools, and to weld the outer sidewall 141 of the arc-shaped column 100 to form two weld pools;

[0152] S35 , controlling the oil cylinder 450 to drive the pressing head 460 to move away from the positioning pad 430 to the initial position, and removing the arc-shaped column 100 from the pressing tool 400 .

[0153] The positioning pad 430 and the pressure head 460 are both arc-shaped. In S33, when the arc column 100 is pressed to form the arc column 100, the outer ring side wall 141 and the inner ring side wall 142 of the arc column 100 both protrude from the outer surface of the positioning pad 430, and the outer ring side wall 141 and the inner ring side wall 142 of the arc column 100 both protrude from the outer surface of the pressure head 460, ensuring that the external laser welding robot arm will not be interfered with by the positioning pad 430 and the pressure head 460 when welding on the outer ring side wall 141 and the inner ring side wall 142 of the arc column 100 to form a welding pool.

[0154] By compacting the stacked first sheet 121 and the second sheet 122 with the compacting tool 400 and then welding them, the gap between the first sheet 121 and the second sheet 122, as well as the gap between adjacent second sheets 122, can be reduced. Filling the corresponding gaps with hot melt adhesive can help improve the integrity and quality of the arc column 100. Moreover, since the hot melt adhesive is only dripped into the coating area 1227, when the arc column 100 is formed after compacting, the hot melt adhesive will not flow into the welding groove 146, and will not affect the progress of welding in S4 or affect the quality of welding.

[0155] Example 13:

[0156] As an optimization of Example 12, Figure 22 and Figure 23 As shown, in S4, the four arc-shaped columns 100 are fixed by the positioning tool 500, which includes a support ring 510, a second positioning column 520 and a bolt 530. The support ring 510 is provided with an insertion hole 511 and a threaded hole 512. The second positioning column 520 is plugged into the insertion hole 511, and the bolt 530 is threadedly connected to the threaded hole 512.

[0157] In S4, the arc column 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 column 100, and then the four arc columns 100 are welded together to obtain the inertia ring 1.

[0158] It should be noted that when the arc column 100 is placed on the support ring 510, the second positioning column 520 passes through the mounting hole 143 of the arc column 100, thereby preliminarily positioning the arc column 100, and 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 to fix the position of the arc column 100. After the four arc columns 100 are fixed, an inertia ring 1 with a closed ring structure is formed, and a welding groove 146 is formed in the mating connection area. The four arc columns 100 are fixed by the second positioning column 520 and the bolt 530, which can ensure the roundness of the inertia ring 1 formed after welding, 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.

[0159] In this embodiment, an arc-shaped column 100 is positioned by two second positioning columns 520 and a bolt 530, and a washer 540 is provided on the outer ring of the screw of the bolt 530. When the bolt 530 is tightened, the washer 540 is located between the head of the bolt 530 and the arc-shaped column 100. The washer 540 can disperse stress and prevent the arc-shaped column 100 from being squeezed and deformed when the bolt 530 is tightened.

[0160] The inner diameter of the support ring 510 is larger than the inner diameter of the inertia ring 1, and the outer diameter of the support ring 510 is smaller than the outer diameter of the inertia ring 1. An avoidance groove 513 is provided on 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.

[0161] After the four arc-shaped columns 100 are fixed on the positioning fixture 500 , eight welding grooves 146 are formed. Welding is performed in the eight welding grooves 146 to form weld seams 130 , thereby welding the four arc-shaped columns 100 together to form a stable inertia ring 1 as a whole.

[0162] Example 14:

[0163] As an optimization of Example 13, Figures 24-30 As shown, in S5, the adhesive layer of the inertia ring 1 is homogenized by a rotating heating device 600, and the rotating heating device 600 includes a rotating disk 630 and a plurality of positioning disks 640 rotatably connected to the rotating disk 630;

[0164] 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 adhesive layer is uniform.

[0165] It should be noted that the rotary heating device 600 includes a bracket 610, on which a motor 620 is fixedly mounted. The output end of the motor 620 is driven and connected to a rotating disk 630, and a plurality of positioning disks 640 are rotatably connected to the rotating disk. The plurality of positioning disks 640 are distributed in a circular array around the center line of the rotating disk 630.

[0166] Adjacent positioning disks 640 are separated by partitions 631 , which are fixedly mounted on the rotating disk 630 . A sealing cover 650 is detachably mounted on the bracket 610 , and the sealing cover 650 is provided with an air inlet 661 and an air outlet 662 .

[0167] The positioning disk 640 is provided with at least two screw holes 641. The inertia ring 1 is fixed to the positioning disk 640 by screws 642. The outer ring of the positioning disk 640 is fixed with a plurality of disk blades 643 distributed in a circular array along its center line.

[0168] In S5, the screw 642 is passed through the mounting hole 143 of the inertia ring 1, screwed into the screw hole 641 and tightened, thereby fixing the inertia ring 1 on the positioning disk 640. After multiple inertia rings 1 are fixed, the sealing cover 650 is covered, and the air inlet 661 of the sealing cover 650 is connected to the hot air gun. The motor 620 is started to drive the rotating disk 630 to rotate, thereby driving the multiple inertia rings 1 to revolve around the center line of the rotating disk 630. The hot air blows toward the disk 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 causes the adhesive layer to melt and flow. The inertia ring 1 makes the adhesive layer uniform through rotation and revolution.

[0169] In this embodiment, the first connecting member 144 of the arc-shaped column 100 is a dovetail-shaped tenon. A hot air gun is used to continuously introduce hot air into the sealing cover 650 to maintain the temperature inside the sealing cover 650 and ensure that the adhesive layer can melt. Cold air or excess gas is discharged through the exhaust port 662. When the inertia ring 1 revolves and rotates, the hot melt adhesive is evenly spread under the action of centrifugal force.

[0170] After the hot melt adhesive between adjacent sheets 120 melts, it flows back and forth in the gaps between the adjacent sheets 120. The hot melt adhesive in the larger gaps between the adjacent sheets 120 flows out and tends to fill the smaller gaps between the adjacent sheets 120, thereby increasing the contact area between the hot melt adhesive and the sheets 120, thereby improving the connection strength between the adjacent sheets 120.

[0171] In addition, the hot melt adhesive melted between adjacent sheets 120 diffuses outward from the coating area 1227 under the action of centrifugal force. Some of the hot melt adhesive between adjacent sheets 120 flows into the small gap between the tenon and the mortise, thereby improving the connection strength of adjacent arc-shaped columns 100.

[0172] After the hot melt adhesive between the tenon and the mortise melts, it flows back and forth within the gap between the tenon and the mortise. The hot melt adhesive in the larger gap between the tenon and the mortise flows out and tends to fill the smaller gap between the tenon and the mortise. During this process, the hot melt adhesive flows from the tenon end surface 1225 to the tenon side surface 1226, increasing the contact area between the hot melt adhesive, the tenon and the mortise, thereby further improving the connection strength between adjacent arc-shaped columns 100.

[0173] Since the inertia ring 1 rotates during operation, it mainly needs to resist centrifugal force. Therefore, the connection strength between adjacent arc-shaped cylinders 100 is improved. Under the action of centrifugal force, the arc-shaped cylinders 100 are less likely to be pulled off, and the inertia ring 1 is less likely to be damaged, thereby improving the quality of the inertia ring 1.

[0174] After the inertia ring 1 rotates with the rotating disk 630 and the positioning disk 640 for a preset time, the uniformization of the adhesive layer is completed. The hot air gun is removed from the air inlet 661 and the sealing cover 650 is opened. The uniformized hot melt adhesive solidifies to form a uniform adhesive layer. The contact area between the adhesive layer and the sheet 120, the tenon, and the mortise is increased, further improving the overall performance of the inertia ring 1.

[0175] The bracket 610 is provided with a protruding platform 611 that engages with 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. The inertia ring 1 is located in the sealed space. The outer ring of the protruding platform 611 is provided with a sealing ring to achieve a sealing effect between the protruding platform 611 and the sealing cover 650. This design makes it very convenient to disassemble and assemble the sealing cover 650 and the bracket 610.

[0176] A boss 632 is provided at the center of the rotating disk 630, and all the partitions 631 are fixedly connected to the boss 632. The boss 632 and the partitions 631 divide the sealed space into multiple areas. A positioning disk 640 is rotatably installed in each area to prevent interference between the multiple positioning disks 640 when rotating simultaneously. The hot air is blown in the tangential direction of the rotating disk 630. Under the restriction of the sealing cover 650, the partitions 631 and the boss 632, the hot air circulates around the inner ring side wall of the sealing cover 650, and drives the disk blades 643 to rotate all the positioning disks 640, thereby driving all the inertia rings 1 to rotate around the center line of their respective positioning disks 640;

[0177] A mounting groove 633 is provided at the top of the rotating disk 630, and a rotating shaft 644 is provided at the bottom of the positioning disk 640. The rotating shaft 644 is rotatably connected to the mounting groove 633 through a bearing. When hot air blows toward the disk blades 643, it is more conducive to the rotation of the positioning disk 640, thereby driving the inertia ring 1 to rotate.

[0178] The embodiments of the invention are described above in conjunction with the accompanying drawings, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms without departing from the purpose of this embodiment and the scope of protection of the claims, all of which are protected by this embodiment.

Claims

1. An inertia ring, characterized in that: include: A plurality of arc-shaped cylinders (100), wherein the plurality of arc-shaped cylinders (100) are sequentially connected end to end to form an inertia ring (1) of a closed ring structure, wherein the outer ring side wall (141) and the inner ring side wall (142) of the arc-shaped cylinder (100) are each provided with at least two connecting portions (110), and the arc-shaped cylinder (100) comprises a plurality of sheet materials (120) stacked along the axial direction of the inertia ring (1), wherein the plurality of sheet materials (120) of the same arc-shaped cylinder (100) are connected via the connecting portions (110), and the plurality of sheet materials (120) are formed by continuous stamping on a material strip (200); A plurality of the sheets (120) of the same arc-shaped column (100) are overlapped axially along the inertia ring (1) and connected via a chimeric structure, and a protrusion (1221) and a groove chimeric connection structure are provided between the sheets (120) adjacent to each other in the vertical direction, and the chimeric connection structure is used to limit lateral misalignment between the sheets (120); The sheet material (120) located at the top is a 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 a second sheet material (122), and the groove on the second sheet material (122) is a blind groove (1222), and the second sheet material (122) is provided with a protrusion (1221) that cooperates with the blind groove (1222) or the through groove (1211); Each of the inertia rings (1) comprises four arc-shaped columns (100), the arc-shaped columns (100) have mounting holes (143), and the connecting portion (110) is a welding pool; A first connecting piece (144) is provided at one end of the arc column (100), and a second connecting piece (145) that cooperates with the first connecting piece (144) is provided at the other end of the arc column. A welding groove (146) is formed in the area where two adjacent arc columns (100) are connected by cooperation. The two adjacent arc columns (100) are welded together, and a weld (130) is formed in the welding groove (146). The first connecting member (144) is configured as a tenon with a dovetail structure, and the second connecting member (145) is configured as a mortise that cooperates with the tenon. Adjacent sheets (120) and the tenon and the mortise are connected via an adhesive layer.

2. The die stamping and welding forming process of an inertia ring according to claim 1, characterized in that: The following steps are involved: S1, manufacturing the sheet material (120): the material strip (200) is formed into the sheet material (120) by a stamping die; S2, lamination: coating the sheet material (120) formed in S1 with hot melt adhesive, and stacking multiple sheets to form the arc-shaped column (100); S3, welding the arc-shaped column (100): coating the end faces of the first connecting member (144) and the second connecting member (145) with hot melt adhesive, and welding the outer ring side wall (141) and the inner ring side wall (142) by an external laser welding robot arm to form the welding molten pool; S4, welding the inertia ring (1): after the four arc-shaped cylinders (100) are spliced and positioned, the four arc-shaped cylinders (100) are welded to form the inertia ring (1); S5, performing a homogenization treatment on the bonding layer of the inertia ring (1).

3. The die stamping and welding forming process of an inertia ring according to claim 2, characterized in that: Said S1 is completed by a multi-station progressive die, said progressive die comprising a punching die, a notching die, a convex die (300) and a blanking die, said S1 comprises the following steps: S11, punching holes in the material strip (200) using the punching die; S12, punching a groove on the material strip (200) using the punching die; S13, embossing the material strip (200) using the embossing mold (300); S14, punching the material strip (200) by the punching die, punching out the notched portion of the material strip (200) to form the first sheet (121), and punching out the convex portion of the material strip (200) to form the second sheet (122).

4. The die stamping and welding forming process of an inertia ring according to claim 3, characterized in that: The embossing mold (300) includes an upper mold (310), a lower mold base (320), a lower mold plate (340), a first positioning column (360) and an ejector pin (370); the lower mold plate (340) and the lower mold base (320) are slidably guided together; the first positioning column (360) and the ejector pin (370) are both fixedly mounted on the lower mold base (320); and the lower mold plate (340) is provided with a first guide groove (341) that slidably cooperates with the first positioning column (360); In the mold opening state, the first positioning column (360) extends out of the top surface of the lower mold plate (340), the lower mold plate (340) is provided with a second guide groove (342) that is slidably engaged with the ejector pin (370), the upper mold (310) is provided with a third guide groove (311) that is slidably engaged with the first positioning column (360), and the upper mold (310) is provided with a fourth guide groove (312) corresponding to the ejector pin (370); In the S13, the upper mold (310) and the lower mold plate (340) are combined to emboss the material strip (200).

5. The die stamping and welding forming process of an inertia ring according to claim 4, characterized in that: The embossing mold (300) further includes a nitrogen spring (350) fixedly mounted on the lower mold base (320), wherein the telescopic end of the nitrogen spring (350) is fixedly connected to the lower mold plate (340), and in the mold opening state, the top end of the ejector pin (370) is located in the second guide groove (342); In S13, after the upper mold (310) and the lower mold (340) initially press the material strip (200), the upper mold (310) continues to move downward, driving the lower mold (340) to move downward synchronously, so that the top end of the ejector pin (370) extends out of the top surface of the lower mold (340) and is pushed into the material strip (200).

6. The die stamping and welding forming process of an inertia ring according to claim 2, characterized in that: In S4, the four arc-shaped columns (100) are fixed by a positioning tool (500), the positioning tool (500) includes a support ring (510), a second positioning column (520) and a bolt (530), the support ring (510) is provided with a socket (511) and a threaded hole (512), the second positioning column (520) is plugged into the socket (511), and the bolt (530) is threadedly connected to the threaded hole (512); In S4, the arc column (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 column (100), and then the four arc columns (100) are welded together to obtain the inertia ring (1).

7. The die stamping and welding forming process for an inertia ring according to claim 2, characterized in that: In S5, the bonding layer of the inertia ring (1) is homogenized by a rotary heating device (600), wherein the rotary heating device (600) comprises a rotary disk (630) and a plurality of positioning disks (640) rotatably connected to the rotary 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 uniform.

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