A rolling device and a rolling forming method for a w-shaped metal seal ring

Abstract

The application provides a rolling device and a rolling forming method of a W-shaped metal seal ring, and belongs to the technical field of thin-walled metal ring manufacturing. The rolling device of the W-shaped metal seal ring comprises a first rolling mechanism and a second rolling mechanism. The first rolling mechanism comprises a first rotating shaft and a first roller. The first roller can rotate along with the first rotating shaft. An annular groove is arranged on the outer circumferential surface of the first roller. The second rolling mechanism comprises a second rotating shaft and a second roller. The second roller can rotate along with the second rotating shaft. The second roller has an annular extrusion part. The rolling forming method adopts the rolling device of the W-shaped metal seal ring as described above. The rolling device and the rolling forming method of the W-shaped metal seal ring provided by the application roll an annular blank into a metal seal ring through the inner and outer two rolling mechanisms. The rollers do not need to be replaced in multiple passes, and the blank does not need to be clamped multiple times. Therefore, the error generated when the blank is clamped is reduced, the possibility of defects of the metal seal ring is reduced, and the yield of the metal seal ring is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of thin-walled metal ring manufacturing, and more particularly to a rolling device and a rolling forming method of a W-shaped metal seal ring. BACKGROUND

[0002] A seal ring (also known as a sealing ring) is a ring-shaped sealing element with a notch, which is pressed together to have elasticity and is tightly attached to the inner hole wall of a stationary part to play a sealing role. The metal seal ring is a kind of static sealing element with excellent performance, which is mainly used in harsh operating conditions such as high temperature, high pressure, low temperature, vacuum and frequent working condition fluctuations, and is therefore widely used in aerospace, nuclear industry, thermal power, petrochemical industry, metallurgy and other industries. In the prior art, the W-shaped metal seal ring is a common seal ring, and the forming method of the W-shaped metal seal ring includes a multi-pass rolling process. The multi-pass rolling process needs to replace the rollers multiple times and clamp the blank multiple times, which is prone to errors. These errors are accumulated and are prone to cause uneven rolling deformation of the W-shaped metal seal ring, which makes the W-shaped metal seal ring prone to wrinkles, cracks, warping or local thinning, and seriously reduces the yield of the W-shaped metal seal ring. SUMMARY

[0003] The embodiments of the present application provide a rolling device and a rolling forming method of a W-shaped metal seal ring to solve the technical problem of low yield of the W-shaped metal seal ring in the prior art.

[0004] Therefore, according to one aspect of the present application, a rolling device of a W-shaped metal seal ring is provided for rolling a ring-shaped blank into a metal seal ring, which comprises:

[0005] a first rolling mechanism comprising a first rotating shaft and a first roller sleeved on the first rotating shaft, the first roller being capable of rotating with the first rotating shaft, a ring-shaped groove for accommodating the ring-shaped blank being provided on the outer circumferential surface of the first roller along the circumferential direction of the first roller, and the wall surface of at least part of the ring-shaped groove being matched with the outer contour of the metal seal ring; and

[0006] a second rolling mechanism comprising a second rotating shaft corresponding to the first rotating shaft and a second roller sleeved on the second rotating shaft, the second roller being capable of rotating with the second rotating shaft, the second roller having a ring-shaped extrusion part facing the ring-shaped groove, and the extrusion surface of the ring-shaped extrusion part being matched with the inner contour of the metal seal ring;

[0007] The first rolling mechanism and the second rolling mechanism are respectively arranged on the inner and outer sides of the annular blank along the radial direction of the annular blank, the second rolling mechanism is capable of moving towards or away from the first rolling mechanism, and in the process of moving of the second rolling mechanism towards the first rolling mechanism, the annular extrusion part is capable of contacting the annular blank in the annular groove and extruding the annular blank to be clamped between the wall surface and the extrusion surface.

[0008] Optionally, the first roller comprises:

[0009] The mold core wheel is fixed on the first rotating shaft.

[0010] The first main pinion is capable of sliding on the first rotating shaft along the axial direction of the first rotating shaft, and the first main pinion is provided with a notch matched with the partial outer contour.

[0011] The second main pinion is arranged on the side of the mold core wheel away from the first main pinion, and the second main pinion is capable of sliding on the first rotating shaft along the axial direction of the first rotating shaft, and the second main pinion is provided with a notch matched with the partial outer contour.

[0012] After the first main pinion contacts the mold core wheel and after the second main pinion contacts the mold core wheel, the first main pinion, the mold core wheel and the second main pinion enclose to form the annular groove.

[0013] Optionally, the second roller comprises:

[0014] The first secondary pinion is capable of sliding on the second rotating shaft along the axial direction of the second rotating shaft, and the first secondary pinion has a first annular protrusion towards the annular groove.

[0015] The second secondary pinion is capable of sliding on the second rotating shaft along the axial direction of the second rotating shaft, and the second secondary pinion has a second annular protrusion towards the annular groove.

[0016] The first annular protrusion and the second annular protrusion form the annular extrusion part.

[0017] Optionally, the first roller is connected to the first rotating shaft by a key, and the second roller is connected to the second rotating shaft by a key.

[0018] Optionally, the rolling device of the W-shaped metal sealing ring further comprises a positioning mechanism distributed at intervals with the first rolling mechanism or at intervals with the second rolling mechanism along the circumferential direction of the annular blank.

[0019] Optionally, the positioning mechanism comprises a radial positioning mechanism and an axial positioning mechanism.

[0020] Optionally, the radial positioning mechanism is provided with two, and the two radial positioning mechanisms are distributed on the two sides of the first rolling mechanism or the two sides of the second rolling mechanism along the circumferential direction of the annular blank.

[0021] Optionally, the radial positioning mechanism is provided with axial positioning mechanisms on both sides of the annular blank in the circumferential direction.

[0022] Optionally, the radial positioning mechanism includes two radial positioning wheels respectively disposed on the inner and outer sides of the annular blank along the radial direction of the annular blank, and the distance between the two radial positioning wheels can be adjusted according to the thickness variation of the annular blank;

[0023] The axial positioning mechanism includes two axial positioning wheels respectively disposed on both sides of the annular blank along the axial direction of the annular blank. The distance between the two axial positioning wheels can be adjusted according to the height change of the annular blank.

[0024] According to another aspect of this application, a method for rolling a W-shaped metal sealing ring is provided, employing the rolling device for the W-shaped metal sealing ring as described above, characterized in that the method for rolling a W-shaped metal sealing ring includes the following steps:

[0025] Prepare ring-shaped billets;

[0026] The annular blank is mounted on a rolling device for a W-shaped metal sealing ring; and

[0027] The ring-shaped blank is rolled into a metal sealing ring using a W-shaped metal sealing ring rolling device.

[0028] The beneficial effects of the rolling device for the W-type metal sealing ring provided in this application are as follows: Compared with the multi-pass rolling technology of the prior art, the rolling device for the W-type metal sealing ring of this application is used to roll annular blanks into metal sealing rings. The rolling device for the W-type metal sealing ring includes a first rolling mechanism and a second rolling mechanism disposed on the inner and outer sides of the annular blank. The first rolling mechanism is provided with an annular groove for accommodating the annular blank. The wall surface of the annular groove is adapted to the outer contour of the metal sealing ring. The second rolling mechanism has an annular extrusion part facing the annular groove. The extrusion surface of the annular extrusion part is adapted to the inner contour of the metal sealing ring. The annular extrusion part and the annular groove cooperate to roll the annular blank into a metal sealing ring. That is, this application can roll the annular blank into a metal sealing ring well through the inner and outer rolling mechanisms, without the need for multiple roller changes and multiple blank clamping, thereby reducing the error generated when clamping the blank, reducing the possibility of defects in the metal sealing ring, and improving the yield of the metal sealing ring.

[0029] The beneficial effects of the W-type metal sealing ring rolling forming method provided in this application are as follows: compared with the prior art, the rolling forming method adopts the rolling device of the W-type metal sealing ring as described above, and the yield of metal sealing rings produced by the W-type metal sealing ring rolling forming method is high. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A three-dimensional structural schematic diagram of the W-type metal sealing ring provided in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of a half-section of the W-type metal sealing ring provided in an embodiment of this application;

[0033] Figure 3 A top view of the rolling device for the W-type metal sealing ring provided in this application embodiment;

[0034] Figure 4 A partial cross-sectional view of the rolling device for the W-type metal sealing ring and the annular blank before rolling, as provided in the embodiments of this application;

[0035] Figure 5 A partial cross-sectional view of the rolling device and the annular blank of the W-type metal sealing ring provided in the embodiments of this application during the rolling process;

[0036] Figure 6 A partial cross-sectional view of the rolling device for the W-type metal sealing ring and the rolled ring blank provided in the embodiments of this application;

[0037] Figure 7 This is a schematic diagram showing the relationship between the cross-section of the W-shaped metal sealing ring and the cross-section of the annular blank, provided in an embodiment of this application.

[0038] The following are the labeling elements in the figure:

[0039] 10. First rolling mechanism; 110. First rotating shaft; 120. First roller; 121. Mold core wheel; 122. First main dividing roller; 123. Second main dividing roller; 124. Annular groove;

[0040] 20. Second rolling mechanism; 210. Second rotating shaft; 220. Second roller; 221. First dividing roller; 222. Second dividing roller; 223. Annular extrusion section; 2231. First annular protrusion; 2232. Second annular protrusion;

[0041] 30. Radial positioning mechanism; 310. Radial positioning wheel;

[0042] 40. Axial positioning mechanism; 410. Axial positioning wheel;

[0043] 1. Ring-shaped billet;

[0044] 2. W-shaped metal sealing ring; 201. Outer contour; 202. Inner contour. Detailed Implementation

[0045] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0046] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0047] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0049] As described in the background section, in the prior art, W-type metal sealing rings are common sealing rings. The forming method of W-type metal sealing rings includes a multi-pass rolling process. The multi-pass rolling process requires multiple changes of rollers and multiple clamping of blanks. Multiple changes of rollers and multiple clamping of blanks can easily introduce errors. After these errors accumulate, they can easily cause uneven rolling deformation of the W-type metal sealing ring, making the W-type metal sealing ring prone to defects such as wrinkling, cracking, warping or local thinning, which seriously reduces the yield of W-type metal sealing rings.

[0050] To address the aforementioned problems, in accordance with one aspect of this application, please also refer to... Figures 1 to 6This application provides a rolling device for a W-shaped metal sealing ring, used to roll a ring-shaped blank 1 into a metal sealing ring. The rolling device for the W-shaped metal sealing ring includes a first rolling mechanism 10 and a second rolling mechanism 20. The first rolling mechanism 10 includes a first rotating shaft 110 and a first roller 120 sleeved on the first rotating shaft 110. The first roller 120 can rotate with the first rotating shaft 110. An annular groove 124 for accommodating the ring-shaped blank 1 is provided on the outer circumferential surface of the first roller 120 along the circumferential direction of the first roller 120. At least a portion of the wall surface of the annular groove 124 is adapted to the outer contour 201 of the metal sealing ring. The second rolling mechanism 20 includes a second rotating shaft 210 corresponding to the first rotating shaft 110 and a second roller 220 sleeved on the second rotating shaft 210. The second roller 220 can rotate with the second rotating shaft 210. The two rollers 220 have an annular extrusion section 223 facing the annular groove 124. The extrusion surface of the annular extrusion section 223 is adapted to the inner contour 202 of the metal sealing ring. The first rolling mechanism 10 and the second rolling mechanism 20 are respectively arranged on the inner and outer sides of the annular blank 1 along the radial direction. The second rolling mechanism 20 can move towards or away from the first rolling mechanism 10. During the movement of the second rolling mechanism 20 towards the first rolling mechanism 10, the annular extrusion section 223 can contact the annular blank 1 in the annular groove 124 and squeeze and clamp the annular blank 1 between the wall surface and the extrusion surface.

[0051] The rolling device for the W-shaped metal sealing ring provided in this application embodiment, compared with the prior art multi-pass rolling technology, is used to roll a ring-shaped blank 1 into a metal sealing ring. The rolling device includes a first rolling mechanism 10 and a second rolling mechanism 20 disposed on the inner and outer sides of the ring-shaped blank 1. The first rolling mechanism 10 is provided with an annular groove 124 for accommodating the ring-shaped blank 1. The wall surface of the annular groove 124 is adapted to the outer contour 201 of the metal sealing ring. The second rolling mechanism... The structure 20 has an annular extrusion part 223 facing the annular groove 124. The extrusion surface of the annular extrusion part 223 is adapted to the inner contour 202 of the metal sealing ring. The annular extrusion part 223 and the annular groove 124 cooperate to roll the annular blank 1 into a metal sealing ring. That is, this application can roll the annular blank 1 into a metal sealing ring well through two rolling mechanisms, without the need for multiple roller replacements and multiple blank clamping, thereby reducing the error generated when clamping the blank, reducing the possibility of defects in the metal sealing ring, and improving the yield of the metal sealing ring.

[0052] It should be noted that the metal sealing ring described below uses the W-type metal sealing ring 2 as an example. It is understood that the rolling device for the W-type metal sealing ring provided in this application embodiment can also be used to produce C-type metal sealing rings, M-type metal sealing rings, U-type metal sealing rings, etc., and is not limited to this specific type.

[0053] In one embodiment, please refer to [the relevant documentation / reference]. Figures 4 to 6 The first roller 120 includes a core roller 121, a first main roller 122, and a second main roller 123. The core roller 121 is fixed on the first rotating shaft 110. The first main roller 122 can slide along the axial direction of the first rotating shaft 110, and a notch adapted to a portion of the outer contour 201 is provided on the first main roller 122. The second main roller 123 is located on the side of the core roller 121 away from the first main roller 122. The second main roller 123 can slide along the axial direction of the first rotating shaft 110, and a notch adapted to a portion of the outer contour 201 is provided on the second main roller 123. After the first main roller 122 contacts the core roller 121 and after the second main roller 123 contacts the core roller 121, the first main roller 122, the core roller 121, and the second main roller 123 enclose each other to form an annular groove 124.

[0054] Specifically, the surfaces of the circumferential edge of the mold core wheel 121, the notch of the first main dividing wheel 122, and the notch of the second main dividing wheel 123 can be combined to form the wall of the annular groove 124. The surface of the circumferential edge of the mold core wheel 121 itself is adapted to the middle portion of the outer contour 201, and the surfaces of the notches of the first main dividing wheel 122 and the second main dividing wheel 123 are adapted to the portions on either side of this middle portion, respectively. Thus, the wall of the annular groove 124 is adapted to the outer contour 201 of the W-shaped metal sealing ring 2.

[0055] Both the first main dividing wheel 122 and the second main dividing wheel 123 can slide along the axial direction of the first rotating shaft 110. Initially, the first main dividing wheel 122 and the second main dividing wheel 123 are spaced apart from the core wheel 121. Then, the first main dividing wheel 122 and the second main dividing wheel 123 simultaneously move towards the core wheel 121. In this way, the material at both ends of the annular blank 1 can be gradually compensated towards the center into the annular groove 124 to be formed, achieving active material compensation and improving the quality of the W-shaped metal sealing ring 2.

[0056] At the same time, the first main dividing wheel 122 and the second main dividing wheel 123 move towards the mold core wheel 121 during operation, which can guide the rolling deformation of the annular blank 1 to a certain extent, and the rolling deformation of the W-shaped metal sealing ring 2 is relatively uniform.

[0057] In other embodiments, the opening of the annular groove 124 is stepped. The second rolling mechanism 20 first presses the annular blank 1 against the step to prevent the annular blank 1 from shifting within the annular groove 124 due to sudden pressure, thus playing a role in pre-positioning.

[0058] In another embodiment, please refer to [the document / reference]. Figures 4 to 6 The second roller 220 includes a first roller 221 and a second roller 222. The first roller 221 is slidable along the axial direction of the second rotating shaft 210 and has a first annular protrusion 2231 facing the annular groove 124. The second roller 222 is slidable along the axial direction of the second rotating shaft 210 and has a second annular protrusion 2232 facing the annular groove 124. The first annular protrusion 2231 and the second annular protrusion 2232 form an annular pressing portion 223.

[0059] In another embodiment, please refer to [the document / reference]. Figures 4 to 6 The first roller 120 is connected to the first rotating shaft 110, and the second roller 220 is connected to the second rotating shaft 210.

[0060] With the above configuration, the first roller 120 is keyed to the first rotating shaft 110. The keyed connection can both limit the circumferential movement of the first roller 120 and not interfere with the axial sliding of the first roller 120 on the first rotating shaft 110.

[0061] Similarly, the second roller 220 is keyed to the second rotating shaft 210. The keyed connection can both limit the circumferential movement of the second roller 220 and not interfere with the axial sliding of the second roller 220 on the second rotating shaft 210.

[0062] Both the first dividing wheel 221 and the second dividing wheel 222 can slide along the axial direction of the second rotating shaft 210. This involves setting a distance between the first dividing wheel 221 and the second dividing wheel 222. Then, the first dividing wheel 221 and the second dividing wheel 222 move simultaneously towards each other. In this way, the material at both ends of the annular blank 1 can gradually compensate towards the center, achieving active material compensation and improving the quality of the W-shaped metal sealing ring 2.

[0063] At the same time, the first main roller 122 and the second main roller 123 move close to each other during operation, which can guide the rolling deformation of the annular blank 1 to a certain extent, and the rolling deformation of the W-shaped metal sealing ring 2 is relatively uniform.

[0064] In another embodiment, please refer to Figure 3The rolling device for the W-shaped metal sealing ring also includes a positioning mechanism that is spaced apart from the first rolling mechanism 10 or spaced apart from the second rolling mechanism 20 along the circumference of the annular blank 1.

[0065] In this way, by positioning the annular blank 1 through the positioning mechanism, the deviation of the annular blank 1 can be avoided as much as possible when the rolling device of the W-type metal sealing ring is working, and the rolling deformation of the W-type metal sealing ring 2 is more uniform, thereby improving the quality of the W-type metal sealing ring 2.

[0066] In one specific embodiment, please refer to Figure 3 The positioning mechanism includes a radial positioning mechanism 30 and an axial positioning mechanism 40.

[0067] With the above configuration, the radial positioning mechanism 30 can radially limit the annular blank 1, reducing its radial movement; the axial positioning mechanism 40 can axially limit the annular blank 1, reducing its axial movement. Thus, the annular blank 1 is unlikely to deviate radially or axially, resulting in more uniform rolling deformation of the W-shaped metal sealing ring 2 and improving its quality.

[0068] Understandably, depending on the spatial orientation of the annular blank 1 during rolling, the radial positioning mechanism 30 or the axial positioning mechanism 40 can also provide support for the annular blank 1. When the axis of the annular blank 1 is perpendicular to the horizontal plane, it can also be considered that the axial positioning mechanism 40 provides a certain degree of support for the annular blank 1 when it is placed horizontally; when the axis of the annular blank 1 is parallel to the horizontal plane, it can also be considered that the radial positioning mechanism 30 provides a certain degree of support for the annular blank 1 when it is placed vertically.

[0069] Preferably, in this embodiment, the annular blank 1 is placed horizontally, and the axial positioning mechanism 40 provides a certain support for the annular blank 1.

[0070] In a more specific embodiment, please refer to Figure 3 There are two radial positioning mechanisms 30, which are distributed along the circumference of the annular blank 1 on both sides of the first rolling mechanism 10 or the second rolling mechanism 20.

[0071] Since the annular blank 1 rotates slowly during rolling, the radial positioning mechanism 30 is distributed along the circumference of the annular blank 1, which can better position the annular blank 1.

[0072] Understandably, depending on the actual size of the annular blank 1, the radial positioning mechanism 30 can also be provided in three, four or more quantities.

[0073] Preferably, all the radial positioning mechanisms 30 are evenly distributed along the circumference of the annular blank 1, which can better position the annular blank 1.

[0074] In another, more specific embodiment, please refer to Figure 3 The radial positioning mechanism 30 is provided with axial positioning mechanisms 40 on both sides of the annular blank 1 along the circumference.

[0075] In this embodiment, an axial positioning mechanism 40 is provided on each side of the radial positioning mechanism 30.

[0076] In other embodiments, two axial positioning mechanisms 40 or other numbers of axial positioning mechanisms 40 may be provided on both sides of the radial positioning mechanism 30, which is not limited here.

[0077] In some embodiments, please refer to the following: Figures 3 to 6 The radial positioning mechanism 30 includes two radial positioning wheels 310 respectively disposed on the inner and outer sides of the annular blank 1 along the radial direction of the annular blank 1. The distance between the two radial positioning wheels 310 can be adjusted according to the thickness variation of the annular blank 1. The axial positioning mechanism 40 includes two axial positioning wheels 410 respectively disposed on both sides of the annular blank 1 along the axial direction of the annular blank 1. The distance between the two axial positioning wheels 410 can be adjusted according to the height variation of the annular blank 1.

[0078] It should be noted that the rolling of the annular blank 1 is carried out gradually, so the entire annular blank 1 includes an unrolled portion and a rolled portion. The radial dimensions of the unrolled portion and the rolled portion are different, as are the axial dimensions of the unrolled portion and the rolled portion.

[0079] With the above settings, the distance between the two radial positioning wheels 310 can be adjusted according to the thickness variation of the annular blank 1, and the distance between the two axial positioning wheels 410 can be adjusted according to the height variation of the annular blank 1. This allows the radial positioning mechanism 30 and the axial positioning mechanism 40 to provide good support and positioning for each part of the annular blank 1, resulting in more uniform rolling deformation of the W-shaped metal sealing ring 2 and improving the quality of the W-shaped metal sealing ring 2.

[0080] In other embodiments, the rolling device for the W-shaped metal sealing ring also includes a drive mechanism (not shown) for driving the first main roller 122, the second main roller 123, the first roller 221, the second roller 222, the radial positioning roller 310 and the axial positioning roller 410 to facilitate convenient and precise control of the movement of each roller.

[0081] According to another aspect of this application, embodiments of this application also provide a method for rolling a W-shaped metal sealing ring, employing the rolling device for the W-shaped metal sealing ring as described above. The method for rolling a W-shaped metal sealing ring includes the following steps:

[0082] S10: Prepare ring-shaped billet 1;

[0083] S20: Install the annular blank 1 onto the rolling device of the W-type metal sealing ring; and

[0084] S30: The ring-shaped blank 1 is rolled into a W-shaped metal sealing ring 2 by a rolling device for the W-shaped metal sealing ring.

[0085] Compared with the prior art, the W-type metal sealing ring rolling forming method provided in this application adopts the rolling device of the W-type metal sealing ring as described above, and the W-type metal sealing ring 2 produced by the W-type metal sealing ring rolling forming method has a high yield.

[0086] In one embodiment, please refer to [the relevant documentation / reference]. Figure 4 and Figure 7 The preparation of the annular billet 1 also includes the following steps:

[0087] S110: Calculate the height of the annular blank 1 of the W-shaped metal sealing ring 2 based on the W-shaped cross-section of the W-shaped metal sealing ring 2.

[0088] Specifically, please refer to Figure 7 Using the center line of the W-shaped cross-section of the W-shaped metal sealing ring 2 as a reference, the W-shaped cross-section is divided into two symmetrical parts. The middle contour line is obtained by offsetting the left cross-section contour line by half the thickness of the part at equal intervals. Figure 7 The middle section is represented by a dashed line. The arc length of the dashed line is then calculated. After calculating the length of the dashed line, the W metal sealing ring blank is unfolded to obtain its height. On the unfolded blank, point A on the W ring corresponds to point A1. Then, based on the length of the AB arc, point B corresponds to point B1, and point C corresponds to point C1, following the principle of equal length.

[0089] S120: Calculate the length of the sheet material required to prepare the annular blank 1.

[0090] Specifically, for the outer diameter of the finished W-type metal sealing ring 2 (in Figure 4 The thickness of the annular blank 1 (denoted by t) is easily measured by subtracting half of the thickness of the annular blank 1 from the radius R. The radius of the middle contour circle of the annular blank 1 is R-0.5t, and the circumference of the middle contour circle is L=2π(R-0.5t). The length of the sheet material required for the annular blank 1 is equal to the circumference of the middle contour circle.

[0091] S130: Prepare sheet metal and wind it into a cylindrical coil. After fixing and connecting the two ends of the cylindrical coil, an annular blank 1 is obtained.

[0092] It should be noted that after the sheet material is wound into a cylindrical coil, the two ends of the original sheet material are in contact and in a loosely connected state. The above-mentioned fixing of the two ends of the cylindrical coil refers to fixing the two ends of the original sheet material, not the two ends of the cylindrical coil along the axial direction after winding.

[0093] Preferably, the two ends of the cylindrical wound body are fixed by welding.

[0094] Alternatively, the winding step described above can be replaced with the following steps:

[0095] S130: Prepare the sheet metal and pre-open it. After using the flanging process, cut off the allowance to obtain an annular blank 1, which is a ring-shaped blank 1 without weld seams.

[0096] In other embodiments, the annular blank 1 can also be manufactured by other common manufacturing methods such as casting, which are not limited to this method.

[0097] In another embodiment, please refer to Figure 4 The process of installing the annular blank 1 onto the rolling device of the W-shaped metal sealing ring also includes the following steps:

[0098] S210: Move the first main dividing wheel 122 away from the core wheel 121 until it is close to point C1, ensuring that there is an overlap of about 1mm between the annular blank 1 and the notch of the first main dividing wheel 122. At this time, the moving distance of the first main dividing wheel 122 is d1.

[0099] S220: Move the first main dividing wheel 122 a distance d1 away from the mold core wheel 121, so that the first main dividing wheel 122 and the second main dividing wheel 123 are symmetrically distributed relative to the mold core wheel 121.

[0100] S230: The second rotating shaft 210 drives the first dividing wheel 221 and the second dividing wheel 222 to retract inward until the distance between the first dividing wheel 221 and the first main dividing wheel 122 is greater than the thickness of the annular blank 1, so that the annular blank 1 can be placed in. At this time, the distance the second rotating shaft 210 retracts is d3.

[0101] S240: The first dividing wheel 221 moves away from the second dividing wheel 222 until the center of the first annular protrusion 2231 is aligned with the position B1 of the annular blank 1. The distance moved at this time is d2.

[0102] S250: When placing the annular blank 1, the annular blank 1 is axially positioned by the stepped portions of the first main dividing wheel 122 and the second main dividing wheel 123.

[0103] Specifically, please refer to the following: Figures 3 to 7 During the rolling process of the W-shaped metal sealing ring 2 by the rolling device of the W-shaped metal sealing ring, the first rolling mechanism 10 and the second rolling mechanism 20 rotate simultaneously in opposite directions, causing the annular blank 1 to rotate. The end edge of the annular blank 1 drives the radial positioning mechanism 30 and the axial positioning mechanism 40 to rotate. Then, the second rolling mechanism 20 moves closer to the first rolling mechanism 10 for radial feeding. At this time, the first main roller 122 and the second main roller 123 in the first rolling mechanism 10 move inward simultaneously in opposite directions, for example, at a speed of V1. Similarly, the first roller 221 and the second roller 222 in the second rolling mechanism 20 move inward simultaneously in opposite directions, at a speed of approximately V1 / 2.

[0104] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A rolling device for a W-shaped metal sealing ring, used to roll a ring-shaped blank (1) into a metal sealing ring, characterized in that, The rolling device for the W-type metal sealing ring includes: The first rolling mechanism (10) includes a first rotating shaft (110) and a first roller (120) sleeved on the first rotating shaft (110). The first roller (120) can rotate with the first rotating shaft (110). An annular groove (124) for accommodating the annular blank (1) is provided on the outer circumferential surface of the first roller (120) along the circumferential direction of the first roller (120). At least a portion of the wall surface of the annular groove (124) is adapted to the outer contour (201) of the metal sealing ring. The second rolling mechanism (20) includes a second rotating shaft (210) corresponding to the first rotating shaft (110) and a second roller (220) sleeved on the second rotating shaft (210). The second roller (220) can rotate with the second rotating shaft (210). The second roller (220) has an annular extrusion part (223) facing the annular groove (124). The extrusion surface of the annular extrusion part (223) is adapted to the inner contour (202) of the metal sealing ring. The first rolling mechanism (10) and the second rolling mechanism (20) are respectively disposed on the inner and outer sides of the annular blank (1) along the radial direction of the annular blank (1). The second rolling mechanism (20) can move towards or away from the first rolling mechanism (10). During the process of the second rolling mechanism (20) moving towards the first rolling mechanism (10), the annular extrusion part (223) can contact the annular blank (1) located in the annular groove (124) and extrude and clamp the annular blank (1) between the wall surface and the extrusion surface. The first roller (120) includes: The mold core wheel (121) is fixed on the first rotating shaft (110); The first main guide wheel (122) is capable of sliding along the axial direction of the first rotating shaft (110) on the first rotating shaft (110), and the first main guide wheel (122) is provided with a notch adapted to a portion of the outer contour (201); and The second main dividing wheel (123) is disposed on the side of the mold core wheel (121) away from the first main dividing wheel (122). The second main dividing wheel (123) can slide along the axial direction of the first rotating shaft (110) on the first rotating shaft (110). The second main dividing wheel (123) is provided with a notch that matches part of the outer contour (201). After the first main dividing wheel (122) contacts the mold core wheel (121) and after the second main dividing wheel (123) contacts the mold core wheel (121), the first main dividing wheel (122), the mold core wheel (121) and the second main dividing wheel (123) surround and form the annular groove (124). The second roller (220) includes: The first dividing wheel (221) is capable of sliding along the axial direction of the second rotating shaft (210) on the second rotating shaft (210), and the first dividing wheel (221) has a first annular protrusion (2231) facing the annular groove (124); and The second dividing wheel (222) is capable of sliding along the axial direction of the second rotating shaft (210) on the second rotating shaft (210), and the second dividing wheel (222) has a second annular protrusion (2232) facing the annular groove (124). The first annular protrusion (2231) and the second annular protrusion (2232) form the annular extrusion portion (223). The rolling device for the W-shaped metal sealing ring also includes a drive mechanism for driving the first main wheel (122), the second main wheel (123), the first wheel (221), and the second wheel (222) to move.

2. The rolling device for the W-type metal sealing ring as described in claim 1, characterized in that, The first roller (120) is key-connected to the first rotating shaft (110), and the second roller (220) is key-connected to the second rotating shaft (210).

3. The rolling device for the W-type metal sealing ring as described in claim 1, characterized in that, The rolling device for the W-shaped metal sealing ring further includes a positioning mechanism that is spaced apart from the first rolling mechanism (10) or spaced apart from the second rolling mechanism (20) along the circumference of the annular blank (1).

4. The rolling device for the W-type metal sealing ring as described in claim 3, characterized in that, The positioning mechanism includes a radial positioning mechanism (30) and an axial positioning mechanism (40).

5. The rolling device for the W-type metal sealing ring as described in claim 4, characterized in that, Two radial positioning mechanisms (30) are provided, and the two radial positioning mechanisms (30) are distributed along the circumference of the annular blank (1) on both sides of the first rolling mechanism (10) or the second rolling mechanism (20).

6. The rolling device for the W-type metal sealing ring as described in claim 4, characterized in that, The radial positioning mechanism (30) is provided with the axial positioning mechanism (40) on both sides of the circumference of the annular blank (1).

7. The rolling device for the W-type metal sealing ring as described in any one of claims 4-6, characterized in that, The radial positioning mechanism (30) includes two radial positioning wheels (310) respectively disposed on the inner and outer sides of the annular blank (1) along the radial direction of the annular blank (1). The distance between the two radial positioning wheels (310) can be adjusted according to the thickness variation of the annular blank (1). The axial positioning mechanism (40) includes two axial positioning wheels (410) respectively disposed on both sides of the annular blank (1) along the axial direction. The distance between the two axial positioning wheels (410) can be adjusted according to the height change of the annular blank (1).

8. A method for rolling a W-shaped metal sealing ring, comprising using the rolling device for the W-shaped metal sealing ring as described in any one of claims 1-7, characterized in that, The W-type metal sealing ring roll forming method includes the following steps: Prepare the annular blank (1); The annular blank (1) is mounted on the rolling device of the W-shaped metal sealing ring; and The annular blank (1) is rolled into the metal sealing ring by the rolling device of the W-shaped metal sealing ring.

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