Spinning forming die for mixer of combustion chamber of gas turbine

Abstract

The invention discloses a mold for spinning forming of a mixer of a combustion chamber of a gas turbine, and belongs to the technical field of molds for spinning forming, the mold comprises a first petal mold and a second petal mold, the first petal mold and the second petal mold are alternately arranged in an annular array mode, and the side wall of the first petal mold is arranged to be a regular trapezoid slope; the side wall of the second petal mold is arranged to be an inverted trapezoidal inclined face, the regular trapezoidal inclined face is matched with the inverted trapezoidal inclined face in an attached mode, driving assemblies are arranged in the first petal mold and the second petal mold, and alternate supporting assemblies are arranged between the driving assemblies and the first petal mold and between the driving assemblies and the second petal mold. Through the arrangement of the first petal mold, the second petal mold, the driving assembly and the alternate supporting assembly, the mold can integrally and synchronously stretch to the working diameter for spinning forming, after forming, the mold can be integrally, synchronously and radially folded by operating a rotating handle, the molded surface of the mold is smoothly separated from an inner cavity of a workpiece, the demolding step is simplified, and the machining efficiency is remarkably improved.

Description

Technical Field

[0001] This invention belongs to the technical field of spun forming molds, specifically relating to a spun forming mold for a gas turbine combustion chamber mixer. Background Technology

[0002] Spinning, a metal pressure processing method, is widely used in the machining of thin-walled hollow rotating parts. It is an advanced non-cutting manufacturing process belonging to rotary plastic forming technology. It utilizes the feed motion of tools such as spinning wheels to apply pressure to the metal blank to be formed, causing continuous localized plastic deformation to create the desired hollow part. Because of the small contact area between the spinning wheel and the blank, this process can effectively reduce the forming force during spinning and greatly improve the forming efficiency.

[0003] In the field of gas turbine manufacturing, due to the actual requirements of the unit's high-temperature operation, its combustion chamber is made of multiple types of high-temperature alloys. Among them, the cylinder body is composed of multiple high-temperature alloy thin-walled parts with complex shapes and necked ends. Ordinary machining is difficult to complete the manufacturing. To ensure machining accuracy, spinning has become the best choice for such parts.

[0004] Existing spinning dies provide the conditions for demolding combustion chamber mixers, and petal dies are often used. However, after the combustion chamber is spun, the petal dies need to be disassembled one by one to demold the finished product. After demolding, the dies need to be reassembled, resulting in low processing efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a mold for spinning a gas turbine combustion chamber mixer.

[0006] The technical solution adopted to solve the above technical problems is: a mold for spinning a gas turbine combustion chamber mixer, including a petal mold one and a petal mold two, wherein the petal mold one and the petal mold two are arranged alternately in a circular array, the side wall of the petal mold one is a positive trapezoidal inclined surface, and the side wall of the petal mold two is an inverted trapezoidal inclined surface, the positive trapezoidal inclined surface and the inverted trapezoidal inclined surface are fitted together, the petal mold one and the petal mold two are provided with a driving component inside, and an alternating support component is provided between the driving component and the petal mold one and the petal mold two, the driving component drives the petal mold one and the petal mold two to extend and retract separately through the alternating support component.

[0007] Furthermore, the drive assembly includes a bidirectional threaded rod and a bidirectional threaded hollow rod, both located on the central axis of petal mold one and petal mold two. A positioning pin is rotatably connected to the front end of the bidirectional threaded rod, and the rear end of the bidirectional threaded rod is rotatably connected to the front end of the bidirectional threaded hollow rod via an adapter. A connecting rod is fixedly connected to the rear end of the bidirectional threaded rod, and a first handle is fixedly connected to the end of the connecting rod through the cavity of the bidirectional threaded hollow rod. A second handle is sleeved and fixed to the end of the bidirectional threaded hollow rod. A fixed frame is rotatably connected to the outer wall of the bidirectional threaded hollow rod, and a fixed plate is fixedly connected to the rear end of the fixed frame. An installation head is fixedly connected to the rear wall of the fixed plate. Two limiting rods are fixed between the fixed frame and the positioning pin. Locking mechanisms that cooperate with the fixed frame and the fixed plate for limiting are provided on the first and second handles.

[0008] Through the above technical solution, the bidirectional threaded rod and the bidirectional threaded hollow rod can be driven to rotate by the first and second swivel handles, respectively, thereby controlling the movement of the petal mold one or the petal mold two through the alternating support components. The locking mechanism can lock the position of the swivel handle to prevent the mold state from changing due to vibration during the processing.

[0009] Furthermore, the locking mechanism includes a bolt 1 that is threadedly connected to the rear wall of the second handle and a bolt 2 that is threadedly connected to the rear wall of the first handle. A magnet 1 is fixed to the end of the bolt 1 near the fixed frame, and a magnet 2 is fixed to the end of the bolt 2 near the fixed plate. Both the fixed plate and the fixed frame are made of metal that can be attracted by magnets.

[0010] Through the above technical solution, the rotating bolt can drive the magnet to move closer to or away from the fixed plate or fixed frame. When the magnet is attracted to the metal part, the handle can be quickly locked to prevent accidental rotation. Rotating the bolt in the opposite direction can quickly unlock the screw. The operation is simple and reliable.

[0011] Furthermore, the front and rear ends of the adapter are respectively provided with bearing groove one and bearing groove two. The bearing groove one is rotatably connected to the side wall of the connecting rod through a bearing. The bearing groove two is rotatably connected to the front end of the bidirectional threaded hollow rod through a bearing. The outer side wall of the adapter is symmetrically provided with arc-shaped grooves. The inner wall of the arc-shaped groove is in contact with the side wall of the adjacent limiting rod.

[0012] The above technical solution enhances the strength of the connection structure between the bidirectional threaded rod and the bidirectional threaded hollow rod. The arc-shaped groove fits snugly against the side wall of the limiting rod, providing an additional support point for the middle section of the limiting rod, further improving the stability of the entire mold's rigid skeleton.

[0013] Furthermore, the alternating support assembly includes two threaded cylinders (first type) threadedly connected to the sidewall of the bidirectional threaded rod, and two threaded cylinders (second type) threadedly connected to the sidewall of the bidirectional threaded hollow rod. The two threaded cylinders (first type and second type) are symmetrically arranged. Each threaded cylinder (first type) has a connecting groove (first type) arranged in a circumferential array on its sidewall. The position and number of the connecting grooves (first type) correspond to the petal molds (first type). A movable rod (first type) is rotatably connected to the inner sidewall of each connecting groove (first type). The other end of each movable rod (first type) is rotatably connected to a connecting piece (first type). Each connecting piece (first type) is fixed to the inner sidewall of an adjacent petal mold (first type). The sidewalls of the threaded cylinder 2 are all provided with connecting grooves 2 arranged in a circumferential array. The position and number of the connecting grooves 2 correspond to the petal mold 2. The inner sidewalls of the connecting grooves 2 are rotatably connected to movable rods 2. The other end of each movable rod 2 is rotatably connected to a connector 2. Each connector 2 is fixed to the inner sidewall of the adjacent petal mold 2. Both movable rods 1 and 2 are provided with quick-release mechanisms that cooperate with connectors 1 and 2. The front sidewalls of the threaded cylinders 1 and 2 are all provided with limit holes. The inner wall of each limit hole is slidably connected to the outer wall of the limit rod.

[0014] Through the above technical solution, the rotational motion of the bidirectional threaded rod or bidirectional threaded hollow rod is converted into the linear motion of threaded cylinder one or threaded cylinder two along the limiting rod via threaded transmission. When the two threaded cylinders one move towards each other, they push the movable rod one to be more radial, thereby driving all petal molds one to extend radially outward synchronously; when they move away from each other, they pull the petal molds one radially inward. The driving principle of threaded cylinder two is the same as that of petal mold two. The sliding fit between the limiting rod and the limiting hole ensures the accuracy and stability of the linear motion of the threaded cylinder.

[0015] Furthermore, the quick-release mechanism includes movable grooves formed inside movable rod one and movable rod two. Through holes one and two are formed on both inner walls of the movable grooves. The second through hole is located below the first through hole. Symmetrically arranged pressing plates are slidably fitted inside the cavity of the movable groove. A spring is fixed between the two pressing plates. Positioning protrusions and pressing protrusions are provided on the outer walls of the pressing plates. The side walls of the positioning protrusions are slidably connected to the inner walls of adjacent through holes one and two, respectively. The positioning protrusions are adapted to the rotating holes of connector one and connector two.

[0016] With the above technical solution, in its natural state, the spring pushes the pressing plates on both sides, causing the positioning protrusions to extend and engage with the rotating holes of the connector, thus achieving a reliable connection between the movable rod and the connector. When disassembly is required, pressing the pressing protrusions on both sides simultaneously overcomes the spring force, causing the positioning protrusions to retract, thereby separating the movable rod from the connector. This enables quick and independent assembly and disassembly of the single-petal mold without the need for tools, facilitating mold replacement and maintenance.

[0017] Furthermore, when the petal mold one and petal mold two are fully retracted inward, the petal mold one and petal mold two do not interfere with each other's paths with the movable rod two and movable rod one.

[0018] The above technical solution ensures that there is a sufficient gap between the petals and the supporting rod during the mold closing process, completely avoiding motion interference, ensuring smooth opening and closing actions, and preventing damage to components caused by accidental collisions.

[0019] The beneficial effects of this invention are as follows:

[0020] (1) Through the set petal mold one, petal mold two, driving component and alternating support component, under the action of the driving component and alternating support component, the mold can be extended radially as a whole, forming a complete, smooth and high-precision forming surface for spinning processing. After forming, the petal mold one can be driven to retract radially first to release the lock on the petal mold two, and then the petal mold two can be driven to retract radially to shrink the overall size of the mold, thereby successfully separating from the inner cavity of the workpiece. This step-by-step alternating retraction method greatly simplifies the demolding steps and significantly improves the processing efficiency.

[0021] (2) With the set drive components and locking mechanism, the operator only needs to operate two handles and cooperate with the locking mechanism to accurately control the independent movement and state locking of the two sets of petal molds. The locking mechanism achieves fast locking and unlocking through magnetic adsorption, which can effectively prevent the mold from loosening due to vibration during the spinning process and ensure the rigidity and dimensional stability of the molding process;

[0022] (3) With the quick-release mechanism, when a specific petal mold needs to be replaced or repaired, there is no need to disassemble the entire drive system. Just press the pressing protrusion on the corresponding movable rod to retract the positioning protrusion, and the movable rod can be quickly separated from the connecting part, realizing the independent disassembly of the single petal mold. This greatly shortens the mold replacement and repair time, improves the equipment utilization rate, and at the same time, it is also convenient to install mixer molds of different sizes or shapes, thus expanding the applicability of the device. Attached Figure Description

[0023] Figure 1 This invention relates to an extended three-dimensional mold for spinning a gas turbine combustion chamber mixer. Figure 1 ;

[0024] Figure 2 This invention relates to an extension of a die for spinning a gas turbine combustion chamber mixer. Figure 2 ;

[0025] Figure 3 This is a perspective view of the drive assembly of a mold for spinning a gas turbine combustion chamber mixer according to the present invention;

[0026] Figure 4 yes Figure 3 Enlarged view of point A;

[0027] Figure 5 This is a structural diagram of the adapter for a mold used in spinning a gas turbine combustion chamber mixer according to the present invention;

[0028] Figure 6 This is a perspective view of the alternating support assembly of a mold for spinning a gas turbine combustion chamber mixer according to the present invention;

[0029] Figure 7 This is a partial three-dimensional representation of a mold for spinning a gas turbine combustion chamber mixer according to the present invention. Figure 1 ;

[0030] Figure 8 This is a partial three-dimensional representation of a mold for spinning a gas turbine combustion chamber mixer according to the present invention. Figure 2 ;

[0031] Figure 9 This is a structural diagram of the demolding state of a mold for spinning a gas turbine combustion chamber mixer according to the present invention;

[0032] Figure 10 This is a cross-sectional view of the quick-release mechanism of a mold for spinning a gas turbine combustion chamber mixer according to the present invention.

[0033] Reference numerals: 1. Petal mold one; 2. Petal mold two; 3. Drive assembly; 4. Alternating support assembly; 101. Positive trapezoidal slope; 201. Inverted trapezoidal slope; 301. Bidirectional threaded rod; 302. Connecting rod; 303. Handle one; 304. Bidirectional threaded hollow rod; 305. Handle two; 306. Limiting rod; 307. Locking mechanism; 308. Fixing plate; 309. Fixing frame; 310. Mounting head; 311. Adapter; 312. Positioning pin; 401. Threaded cylinder one; 402. Movable rod one; 403. Connecting part one; 404. 405. Threaded cylinder II; 406. Movable rod II; 407. Connector II; 408. Quick release mechanism; 409. Limiting hole; 3071. Bolt I; 3072. Magnet I; 3073. Bolt II; 3074. Magnet II; 3111. Bearing groove I; 3112. Bearing groove II; 3113. Arc groove; 4011. Connecting groove I; 4041. Connecting groove II; 4071. Movable groove; 4072. Through hole I; 4073. Through hole II; 4074. Pressing plate; 4075. Positioning protrusion; 4076. Spring; 4077. Pressing protrusion. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0035] like Figures 1-10 As shown, a spun molding die for a gas turbine combustion chamber mixer according to this embodiment includes a petal die 1 and a petal die 2. The petal die 1 and the petal die 2 are arranged alternately in a circular array. The side wall of the petal die 1 is a positive trapezoidal inclined surface 101, and the side wall of the petal die 2 is an inverted trapezoidal inclined surface 201. The positive trapezoidal inclined surface 101 and the inverted trapezoidal inclined surface 201 fit together. The petal die 1 and the petal die 2 are provided with a driving component 3 inside. An alternating support component 4 is provided between the driving component 3 and the petal die 1 and the petal die 2. The driving component 3 drives the petal die 1 and the petal die 2 to extend and retract independently through the alternating support component 4.

[0036] Petal mold 1 and petal mold 2 are arranged alternately in a ring array. The trapezoidal inclined surface 101 of petal mold 1 and the inverted trapezoidal inclined surface 201 of petal mold 2 are precisely fitted together. The two inclined surfaces form a geometric relationship of mutual wedging. All independent petals are locked into a seamless, rigid whole ring without relative movement, forming a continuous, smooth, and high-precision target surface (i.e., the inner cavity shape of the mixer). This ensures the overall rigidity and stability of the mold during processing. Under the action of the drive component 3, the mold can be extended synchronously to the working diameter for spinning. After forming, the mold can be synchronously retracted radially, so that the mold surface can be smoothly separated from the inner cavity of the workpiece, thereby realizing the overall near-net-shape forming of complex irregular rotating components.

[0037] like Figure 3As shown, the drive assembly 3 includes a bidirectional threaded rod 301 and a bidirectional threaded hollow rod 304. Both the bidirectional threaded rod 301 and the bidirectional threaded hollow rod 304 are located on the central axis of the petal mold 1 and the petal mold 2. The front end of the bidirectional threaded rod 301 is rotatably connected to a positioning pin 312. The rear end of the bidirectional threaded rod 301 is rotatably connected to the front end of the bidirectional threaded hollow rod 304 through an adapter 311. The rear end of the bidirectional threaded rod 301 is fixedly connected to a connecting rod 302, and the tail end of the connecting rod 302 passes through the bidirectional threaded hollow rod 304. A first handle 303 is fixedly connected inside the cavity of 04. A second handle 305 is sleeved and fixed at the tail end of the double-threaded hollow rod 304. A fixed frame 309 is rotatably connected through the outer wall of the double-threaded hollow rod 304. A fixed plate 308 is fixedly connected to the rear end of the fixed frame 309. An installation head 310 is fixedly connected to the rear wall of the fixed plate 308. Two limiting rods 306 are fixedly connected between the fixed frame 309 and the positioning post 312. A locking mechanism 307 is provided on the first handle 303 and the second handle 305 to cooperate with the limiting of the fixed frame 309 and the fixed plate 308.

[0038] The bidirectional threaded rod 301 and the bidirectional threaded hollow rod 304 are driven to rotate by the first rotating handle 303 and the second rotating handle 305, respectively. Through the locking mechanism 307, the operator can choose to lock one of them, thereby driving the other one independently, realizing the alternating and independent movement of petal mold 1 and petal mold 2. The threaded drive has self-locking and high precision. With the limiting rod 306, the rotational motion is accurately converted into the linear motion of the threaded cylinder. Then, the alternating support assembly 4 controls the opening and closing positions of petal mold 1 and petal mold 2, adapting to molds of different sizes or curved surfaces, and improving the applicability of the device. The fixed frame 309, the fixed plate 308, and the limiting rod 306 constitute the rigid skeleton of the entire mold, ensuring the stability and coaxiality of the drive assembly 3 and the entire mold system during operation. At the same time, the mounting head 310 allows the entire mold to be installed as a whole module, quickly mounted on the spindle or base of the spinning machine, facilitating integration and production changeover.

[0039] like Figure 4 As shown, the locking mechanism 307 includes a bolt 3071 that is threaded through the rear wall of the second handle 305 and a bolt 3073 that is threaded through the rear wall of the first handle 303. A magnet 3072 is fixed to one end of the bolt 3071 near the fixed frame 309, and a magnet 3074 is fixed to one end of the bolt 3073 near the fixed plate 308. The fixed plate 308 and the fixed frame 309 are both made of metal that can be attracted by magnets.

[0040] When locking the state of petal mold 1, rotating bolt 2 3073 drives magnet 2 3074 closer to the fixed plate 308 until magnet 2 3074 attracts to the fixed plate 308, thus locking the support state of petal mold 1. When locking the state of petal mold 2, rotating bolt 1 3071 drives magnet 1 3072 closer to the fixed frame 309 until magnet 1 3072 attracts to the fixed frame 309, thus locking the support state of petal mold 2. The combination of magnetic attraction and threaded locking provides double protection, preventing accidental rotation of the rotating handle 1 303 and rotating handle 2 305 due to vibration during the spinning process, thereby locking the current state of the mold.

[0041] like Figure 5 As shown, the front and rear ends of the adapter 311 are respectively provided with bearing groove 1 3111 and bearing groove 2 3112. The bearing groove 1 3111 is rotatably connected to the side wall of the connecting rod 302 through a bearing. The bearing groove 2 3112 is rotatably connected to the front end of the bidirectional threaded hollow rod 304 through a bearing. The outer side wall of the adapter 311 is symmetrically provided with arc groove 3113. The inner wall of the arc groove 3113 is in contact with the side wall of the adjacent limiting rod 306.

[0042] The adapter 311 features a double-ended bearing, allowing the bidirectional threaded rod 301 and the bidirectional threaded hollow rod 304 to rotate independently without interference, while also enhancing the strength of the connection structure between the bidirectional threaded rod 301 and the bidirectional threaded hollow rod 304. The arc-shaped groove 3113 fits against the side wall of the limiting rod 306, providing an additional support point for the adapter 311 and further improving the stability of the entire mold's rigid frame.

[0043] like Figures 6-9As shown, the alternating support assembly 4 includes two threaded cylinders 401 that are threadedly connected to the sidewall of the bidirectional threaded rod 301, and two threaded cylinders 404 that are threadedly connected to the sidewall of the bidirectional threaded hollow rod 304. The two threaded cylinders 401 and 404 are symmetrically arranged. Each threaded cylinder 401 has a connecting groove 4011 arranged in a circumferential array on its sidewall. The connecting grooves 4011 correspond to the position and number of petal molds 1. Each connecting groove 4011 has a movable rod 402 rotatably connected to its inner sidewall. Each movable rod 402 has a connecting piece 403 rotatably connected to its other end. The connecting pieces 403 are fixed to the inner sidewall of the adjacent petal molds 1. The threaded cylinders 401 and 404... The sidewalls of 404 are all provided with connecting grooves 4041 arranged in a circular array. The position and number of connecting grooves 4041 correspond to the petal molds 2. The inner sidewalls of the connecting grooves 4041 are rotatably connected to movable rods 405. The other end of the movable rods 405 is rotatably connected to connectors 406. Connectors 406 are fixed to the inner sidewalls of adjacent petal molds 2. Movable rods 402 and 405 are provided with quick-release mechanisms 407 that cooperate with connectors 403 and 406. The front sidewalls of threaded cylinders 401 and 404 are all provided with limiting holes 408. The inner wall of the limiting hole 408 is slidably connected to the outer wall of the limiting rod 306.

[0044] During demolding, the first step involves rotating the bidirectional threaded rod 301 via the first handle 303. The limiting hole 408 and the limiting rod 306 slide together, driving the two threaded cylinders 401 to move in opposite directions along the axis. This is converted into a radial pulling force on all petal molds 1 via all movable rods 402, simultaneously causing each petal mold 1 to retract inward. At this point, the locking of petal mold 2 is released, providing space for petal mold 2 to retract. Next, the second handle 305 rotates the bidirectional threaded hollow rod 304, driving the two threaded cylinders 404 to move in opposite directions. Through the cooperation of movable rod 405 and connecting piece 406, each petal mold 2 is simultaneously retracted inward until petal mold 2 covers and fits against petal mold 1, causing the overall radial dimension of the mold to shrink, thus allowing it to easily detach from the formed workpiece. Demolding is convenient. When processing again, simply rotate the first handle 303 and the second handle 305 in the opposite direction. The operation is convenient, significantly reducing the demolding steps and improving processing efficiency.

[0045] like Figure 10As shown, the quick-release mechanism 407 includes a movable groove 4071 opened inside the movable rod 402 and the movable rod 405. The inner walls on both sides of the movable groove 4071 are provided with through holes 4072 and 4073. The through hole 4073 is located below the through hole 4072. The movable groove 4071 is slidably fitted with symmetrically arranged pressing plates 4074. A spring 4076 is fixed between the two pressing plates 4074. The outer walls of the pressing plates 4074 are provided with positioning protrusions 4075 and pressing protrusions 4077. The side walls of the positioning protrusions 4075 are slidably connected to the inner side walls of the adjacent through hole 4072. The side walls of the pressing protrusions 4077 are slidably connected to the inner side walls of the adjacent through hole 4073. The positioning protrusions 4075 are adapted to the rotating holes of the connector 403 and the connector 406.

[0046] When a portion of the mold is damaged or needs to be replaced, simply press the pressing protrusions 4077 on both sides inward simultaneously. This causes the pressing plates 4074 on both sides to move within the movable groove 4071, pressing the spring 4076 and causing the two positioning protrusions 4075 to disengage from the rotating holes of connector 1 403 or connector 2 406. This allows for independent disassembly of the single-part mold, thus completing the replacement. When locking the replaced mold, the spring 4076 pushes the positioning protrusions 4075 on both sides into the rotating holes of the connector, ensuring a secure and reliable lock. The entire process can be completed quickly without the need for tools, significantly shortening mold replacement and maintenance time and improving equipment utilization. Simultaneously, it enhances the versatility and flexibility of the mold, enabling rapid adaptation to mixer products of different sizes or shapes.

[0047] like Figure 9 As shown, when petal mold 1 and petal mold 2 are fully retracted inward, petal mold 1 and petal mold 2 do not interfere with each other's paths with movable rod 2 405 and movable rod 1 402.

[0048] It completely eliminates the risk of mechanical interference between the mold and the support rod during the retraction process, ensures absolutely smooth retraction and extension, and prevents damage to the mold or rod due to accidental collisions, thereby improving the safety of equipment operation.

[0049] The working principle of this embodiment is as follows: In use, firstly, the mold is installed on the spindle or base of the spinning machine using the mounting head 310, ensuring that the locking mechanism 307 is unlocked. Manually rotate the second handle 305 in the reverse direction to drive the bidirectional threaded hollow rod 304 to rotate. Due to the limiting action of the limiting rod 306 and the limiting hole 408, the two threaded cylinders 404 move towards each other along the axis. The movable rod 405 drives all the petal molds 2 to extend radially outward synchronously. Then, manually rotate the first handle 303 in the reverse direction to drive the bidirectional threaded rod 301 to rotate. The two threaded cylinders... Cylinder 401 moves towards each other along the axis, driving all petal molds 1 to extend radially outward synchronously via movable rod 402. When petal molds 1 and 2 extend to the preset working diameter, their positive trapezoidal inclined surface 101 and inverted trapezoidal inclined surface 201 fit tightly together to form a complete rigid forming surface. At this time, rotating bolts 2 3073 and 3071 causes magnet 2 3074 to attract the fixing plate 308 and magnet 1 3072 to attract the fixing frame 309, locking handle 1 303 and handle 2 305 to prevent rotation during processing.

[0050] Next, the positioning pin 312 is inserted into the center positioning hole of the workpiece, and the rotating wheel on the other side cooperates with the front end face of the mold to clamp and fix the blank. Then, the spinning machine is started to drive the mold to rotate as a whole, so that it is plastically deformed in close contact with the complex surface of the mold, and finally the internal structure of the gas turbine combustion chamber mixer is formed.

[0051] After processing, first rotate bolt 2 3073 and bolt 1 3071 in the opposite direction to release the magnetic attraction and loosen the lock of handle 1 303 and handle 2 305.

[0052] During demolding, the forward manual handle 303 first drives the bidirectional threaded rod 301 to rotate. The limiting hole 408 and the limiting rod 306 slide to engage, driving the two threaded cylinders 401 to move in opposite directions along the axis. This is converted into a radial pulling force on all petal molds 1 through all movable rods 402, which simultaneously drives each petal mold 1 to retract radially inward. At this time, the positive trapezoidal inclined surface 101 disengages from the inverted trapezoidal inclined surface 201, releasing the locking of the petal mold 2 and providing space for the petal mold 2 to retract. Next, the forward manual handle 305 drives the bidirectional threaded hollow rod 304 to rotate, driving the two threaded cylinders 404 to move in opposite directions. Through the engagement of the movable rod 405 and the connecting piece 406, each petal mold 2 is simultaneously driven to retract inward until the petal mold 2 and petal mold 1 are covered and fitted together. All petal molds are retracted to their minimum diameter, thus allowing them to be easily extracted from the inner cavity of the formed workpiece, completing the demolding process.

[0053] When a portion of the mold is damaged or needs replacement, simply press the pressing protrusions 4077 on both sides inward simultaneously. This causes the pressing plates 4074 on both sides to move within the movable groove 4071, pressing the spring 4076 and causing the two positioning protrusions 4075 to disengage from the rotating holes of connector 1 403 or connector 2 406. This allows for independent disassembly of the single-part mold, thus completing the replacement. Disassembly and assembly can be completed quickly without tools, significantly shortening mold replacement and maintenance time and improving equipment utilization. Simultaneously, it enhances the versatility and flexibility of the mold, enabling rapid adaptation to mixer products of different sizes or shapes.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A mold for spinning a gas turbine combustion chamber mixer, characterized in that: The device includes a petal mold 1 (1) and a petal mold 2 (2). The petal mold 1 (1) and the petal mold 2 (2) are arranged alternately in a circular array. The side wall of the petal mold 1 (1) is a positive trapezoidal inclined surface (101), and the side wall of the petal mold 2 (2) is an inverted trapezoidal inclined surface (201). The positive trapezoidal inclined surface (101) and the inverted trapezoidal inclined surface (201) fit together. The petal mold 1 (1) and the petal mold 2 (2) are provided with a driving component (3). The driving component (3) is provided with an alternating support component (4) between the petal mold 1 (1) and the petal mold 2 (2). The driving component (3) drives the petal mold 1 (1) and the petal mold 2 (2) to extend and retract separately through the alternating support component (4).

2. The die for spinning a gas turbine combustion chamber mixer according to claim 1, characterized in that, The drive assembly (3) includes a bidirectional threaded rod (301) and a bidirectional threaded hollow rod (304). Both the bidirectional threaded rod (301) and the bidirectional threaded hollow rod (304) are located on the central axis of the petal mold one (1) and the petal mold two (2). The front end of the bidirectional threaded rod (301) is rotatably connected to a positioning pin (312). The rear end of the bidirectional threaded rod (301) is rotatably connected to the front end of the bidirectional threaded hollow rod (304) through an adapter (311). The rear end of the bidirectional threaded rod (301) is fixedly connected to a connecting rod (302). The tail end of the connecting rod (302) passes through the bidirectional threaded hollow rod (304). A first handle (303) is fixedly connected inside the cavity. A second handle (305) is sleeved and fixed at the tail end of the bidirectional threaded hollow rod (304). A fixed frame (309) is rotatably connected through the outer wall of the bidirectional threaded hollow rod (304). A fixed plate (308) is fixedly connected to the rear end of the fixed frame (309). An installation head (310) is fixedly connected to the rear wall of the fixed plate (308). Two limiting rods (306) are fixedly connected between the fixed frame (309) and the positioning post (312). The first handle (303) and the second handle (305) are provided with a locking mechanism (307) that cooperates with the fixed frame (309) and the fixed plate (308) for limiting.

3. The mold for spinning a gas turbine combustion chamber mixer according to claim 2, characterized in that, The locking mechanism (307) includes a bolt 1 (3071) threaded through the rear wall of the second handle (305) and a bolt 2 (3073) threaded through the rear wall of the first handle (303). A magnet 1 (3072) is fixed to one end of the bolt 1 (3071) near the fixed frame (309), and a magnet 2 (3074) is fixed to one end of the bolt 2 (3073) near the fixed plate (308). Both the fixed plate (308) and the fixed frame (309) are made of metal that can be attracted by magnets.

4. The mold for spinning a gas turbine combustion chamber mixer according to claim 2, characterized in that, The adapter (311) has a bearing groove 1 (3111) and a bearing groove 2 (3112) at its front and rear ends, respectively. The bearing groove 1 (3111) is rotatably connected to the side wall of the connecting rod (302) through a bearing. The bearing groove 2 (3112) is rotatably connected to the front end of the double-threaded hollow rod (304) through a bearing. The outer side wall of the adapter (311) is symmetrically provided with an arc groove (3113). The inner wall of the arc groove (3113) is in contact with the side wall of the adjacent limiting rod (306).

5. A mold for spinning a gas turbine combustion chamber mixer according to claim 2, characterized in that, The alternating support assembly (4) includes two threaded cylinders (401) that are threaded through the side wall of the bidirectional threaded rod (301) and two threaded cylinders (404) that are threaded through the side wall of the bidirectional threaded hollow rod (304). The two threaded cylinders (401) and the two threaded cylinders (404) are arranged symmetrically. The side wall of each threaded cylinder (401) is provided with a connecting groove (4011) arranged in a circumferential array. The connecting grooves (4011) correspond to the position and number of the petal molds (1). The inner side wall of each connecting groove (4011) is rotatably connected to a movable rod (402). The other end of each movable rod (402) is rotatably connected to a connector (403). The connectors (403) are fixed to the inner side wall of the adjacent petal molds (1). The two threaded cylinders (404) are arranged symmetrically. The sidewalls of the two petal molds are arranged in a circular array with connecting grooves 2 (4041). The position and number of the connecting grooves 2 (4041) correspond to the petal molds 2 (2). The inner sidewalls of the connecting grooves 2 (4041) are rotatably connected with movable rods 2 (405). The other end of the movable rods 2 (405) is rotatably connected with connectors 2 (406). Connectors 2 (406) are fixed to the inner sidewalls of adjacent petal molds 2 (2). The movable rods 1 (402) and 2 (405) are provided with quick-release mechanisms (407) that cooperate with connectors 1 (403) and 2 (406). The front sidewalls of the threaded cylinders 1 (401) and 2 (404) are provided with limiting holes (408). The inner wall of the limiting hole (408) is slidably connected to the outer wall of the limiting rod (306).

6. The die for spinning a gas turbine combustion chamber mixer according to claim 5, characterized in that, The quick-release mechanism (407) includes a movable groove (4071) formed inside movable rod one (402) and movable rod two (405). Both sides of the movable groove (4071) have through holes one (4072) and two (4073) extending through it. The second through hole (4073) is located below the first through hole (4072). Symmetrically arranged pressing plates (4074) are slidably fitted inside the cavity of the movable groove (4071). The two pressing plates (4074) are fixedly connected. A spring (4076) is attached. The outer side wall of the pressing plate (4074) is provided with positioning protrusions (4075) and pressing protrusions (4077). The side wall of the positioning protrusions (4075) is slidably connected to the inner side wall of the adjacent through hole one (4072). The side wall of the pressing protrusions (4077) is slidably connected to the inner side wall of the adjacent through hole two (4073). The positioning protrusions (4075) are adapted to the rotating holes of the connector one (403) and connector two (406).

7. A mold for spinning a gas turbine combustion chamber mixer according to claim 5, characterized in that, When the petal mold one (1) and petal mold two (2) are fully retracted inward, the petal mold one (1) and petal mold two (2) do not interfere with each other's paths with the movable rod two (405) and movable rod one (402).

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