Turbine partition plate blade mold and machining method

Abstract

The invention discloses a steam turbine partition plate blade mold and a machining method, and relates to the technical field of mold machining, the steam turbine partition plate blade mold comprises a base, the top end of the base is rotationally connected with an alternating assembly, an ejection assembly is arranged in the base, two sets of guide rods are fixed to the two sides of the top end of the base, and the surfaces of the guide rods are slidably connected with moving plates. A partition plate blade formed in the male die is ejected out of the cavity through the ejector rod, so that it is ensured that the ejector rod can stably and evenly apply force, the problems of deformation, scratching or damage and the like of the partition plate blade in the ejection process are avoided, the quality of the partition plate blade is further protected, the double-shaft motor is rotated reversely to enable the movable plate to drive the female die to reset, and the production efficiency is improved. The connecting shaft drives the disc to rotate synchronously, the disc drives the machined male die to move out of the station, meanwhile, the male die of a to-be-machined product is moved into the station, then the purpose of rotation is achieved, the machining efficiency of the partition plate blade is effectively improved, and the production efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mold processing, and specifically relates to a steam turbine diaphragm blade mold and a processing method thereof. Background Technique

[0002] As a core component of a steam turbine, the steam turbine diaphragm blade plays a key role in energy conversion. During the manufacturing process, the accuracy and quality of the diaphragm blade have a crucial impact on the overall performance of the steam turbine. Therefore, a mold is usually used for pressing and forming the diaphragm blade during manufacturing.

[0003] In the existing mold, during the pressing process of the diaphragm blade, usually, the staff places the material on the male mold, and the diaphragm blade is formed by the fitting and pressing of the female mold and the male mold. Subsequently, the formed diaphragm blade is taken out from the cavity and then the material is placed for production and processing. However, this operation relatively affects the production efficiency of the diaphragm blade. At the same time, when the diaphragm blade is processed, the diaphragm blade will be adsorbed inside the mold cavity, which is not convenient for taking it out. For this reason, a steam turbine diaphragm blade mold and a processing method thereof are proposed. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a steam turbine diaphragm blade mold and a processing method thereof to solve the technical problems raised in the above background.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A steam turbine diaphragm blade mold, including a base, an alternating component is rotatably connected to the top end of the base, and an ejection component is arranged inside the base. Two groups of guide rods are fixed on both sides of the top end of the base, a moving plate is slidably connected to the surface of the guide rods, and a cooling component is arranged at the top end of the alternating component; One side of the bottom end of the moving plate is fixed with a vertical shaft, a pressing rod is slidably connected to the lower end of the surface of the vertical shaft, the pressing rod is slidably connected to a gas storage cylinder fixed on the top of the base at the lower end of its surface, a connecting pipe is arranged at the bottom end of the gas storage cylinder, one end of the inner wall of the connecting pipe is slidably connected with a telescopic rod, a long strip is fixed at the end of the telescopic rod away from the connecting pipe, a rack is fixed at the end of the long strip away from the telescopic rod, a ratchet gear meshing with the rack is arranged on one side of the rack, a connecting shaft is fixed at the center of the ratchet gear, a disc fitting on the top of the base is arranged at the top end of the connecting shaft, and multiple groups of male molds are arranged in a circumferential array on the top of the disc; The ejection component includes a connecting rod fixed to one side of the bottom end of the long strip, a first inclined block is fixed at the end of the connecting rod away from the long strip, a second inclined block cooperating with the first inclined block is arranged on one side of the first inclined block, a square plate is fixed on the side of the second inclined block away from the first inclined block, a spring telescopic rod is fixed at the bottom end of the square plate, and a pushing rod slidably connected inside the base is arranged at the top end of the square plate. A ejector rod is slidably connected inside the male mold.

[0006] As a preferred technical solution, a top plate is fixed to the top end of the guide rod, a dual-axis motor is installed on the top end of the top plate, rotating rods are fixed to the output ends on both sides of the dual-axis motor, first helical gears are fixed to the ends of the two groups of rotating rods, and a second helical gear meshing with the first helical gear is provided on one side of the first helical gear.

[0007] As a preferred technical solution, a threaded lead screw is fixed to the center of the second helical gear, the threaded lead screw penetrates through the moving plate and is rotatably connected thereto, female molds are installed on both sides of the bottom end of the moving plate, and formed partition blades are placed on the top surface of the male mold.

[0008] As a preferred technical solution, a delay groove for the vertical shaft to slide is provided inside the extrusion rod.

[0009] As a preferred technical solution, a plurality of clearance grooves are provided inside the disc directly below the ejector rod, the top end of the push rod and the top end of the base are on the same horizontal plane, and a return spring located inside the male mold is sleeved on the surface of the ejector rod.

[0010] As a preferred technical solution, the cooling assembly includes a liquid storage cylinder fixed to the center of the top end of the disc, a piston rod is slidably connected inside the liquid storage cylinder, a plurality of helical springs are installed between the piston rod and the top end inner wall of the liquid storage cylinder, a delivery pipe is connected to one side of the liquid storage cylinder, an annular pipe is fixedly connected to the end of the delivery pipe, a condensation box connected to the delivery pipe is provided between the annular pipe and the liquid storage cylinder, and the annular pipe penetrates through the inside of a plurality of male molds.

[0011] As a preferred technical solution, two L-shaped blocks are fixed to the top end of the moving plate, and a square block located directly above the piston rod is fixed between the two L-shaped blocks.

[0012] A processing method for a steam turbine partition blade mold includes the following steps: Step 1: Start the dual-axis motor to drive the moving plate to bring the female mold and the male mold into contact to press and form the partition blade. Step 2: After the first group of products is formed, use the alternating assembly to move the male mold of the product to be pressed to the working position, and the male mold of the completed product pressing will be synchronously moved out. Step 3: The formed partition blade can be ejected from the male mold through the ejection assembly. Step 4: When processing the partition blade, the male mold can be cooled by the cooling assembly.

[0013] In summary, the present invention mainly has the following beneficial effects: In the present invention, the partition blades formed inside the male mold are ejected from the cavity by the ejector rod to ensure that the ejector rod can apply force smoothly and evenly, avoiding problems such as deformation, scratching or damage of the partition blades during the ejection process, further protecting the quality of the partition blades. The double-axis motor is reversed to drive the moving plate to drive the female mold to reset. The connecting shaft drives the disc to rotate synchronously, so that the disc drives the processed male mold out of the working station, and at the same time moves the male mold of the product to be processed into the working station, thereby achieving the purpose of rotation, effectively improving the processing efficiency of the partition blades and further improving the production efficiency.

[0014] In the present invention, when the moving plate descends, it will drive the square block to descend synchronously, so that the coolant enters the inside of the annular pipe through the delivery pipe, thereby absorbing the heat generated by the long-term pressing production of the male mold, effectively avoiding the deformation of the product caused by excessive heat, and improving the dimensional accuracy and consistency of the partition blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall components of the present invention; Figure 2 is a cross-sectional view of the local components of the present invention; Figure 3 is a schematic diagram of the alternating components of the present invention; Figure 4 is a schematic diagram of the ejection components of the present invention; Figure 5 is a schematic diagram of the inside of the male mold of the present invention; Figure 6 is a schematic diagram of the cooling components of the present invention.

[0016] In the figure: 100, base; 110, guide rod; 120, top plate; 130, double-axis motor; 140, rotating rod; 150, first helical gear; 160, second helical gear; 170, threaded lead screw; 180, moving plate; 190, female mold; 1910, male mold; 1911, partition blade; 200, alternating component; 210, vertical shaft; 220, extrusion rod; 221, delay groove; 230, air storage cylinder; 240, connecting pipe; 250, telescopic rod; 260, long strip; 270, rack; 280, ratchet gear; 290, connecting shaft; 2910, disc; 300, ejection component; 310, connecting rod; 320, first inclined block; 330, second inclined block; 340, square plate; 350, spring telescopic rod; 360, push rod; 361, clearance groove; 370, ejector rod; 380, return spring; 400. Cooling assembly; 410. Liquid storage cylinder; 420. Piston rod; 430. Helical spring; 440. Delivery pipe; 450. Condensation box; 460. Annular pipe; 470. L-shaped block; 480. Square block. Detailed implementation

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0018] The following will describe the embodiments of the present invention according to the overall structure of the present invention.

[0019] A steam turbine diaphragm blade mold, as Figures 1-6 shown, includes a base 100. An alternating assembly 200 is rotatably connected to the top end of the base 100, and an ejection assembly 300 is provided inside the base 100. Two groups of guide rods 110 are fixed on both sides of the top end of the base 100. A moving plate 180 is slidably connected to the surface of the guide rods 110. A cooling assembly 400 is provided at the top end of the alternating assembly 200; One side of the bottom end of the moving plate 180 is fixed with a vertical shaft 210. A pressing rod 220 is slidably connected to the lower end of the surface of the vertical shaft 210. The lower end of the surface of the pressing rod 220 is slidably connected to a gas storage cylinder 230 fixed on the top of the base 100. A connecting pipe 240 is provided at the bottom end of the gas storage cylinder 230. One end of the inner wall of the connecting pipe 240 is slidably connected to a telescopic rod 250. A long strip block 260 is fixed to the end of the telescopic rod 250 away from the connecting pipe 240. A rack 270 is fixed to the end of the long strip block 260 away from the telescopic rod 250. A ratchet gear 280 meshing with the rack 270 is provided on one side of the rack 270. A connecting shaft 290 is fixed at the center of the ratchet gear 280. A disc 2910 fitting on the top of the base 100 is provided at the top end of the connecting shaft 290. Multiple groups of male molds 1910 are circumferentially arranged on the top of the disc 2910; The ejection assembly 300 includes a connecting rod 310 fixed to one side of the bottom end of the long strip block 260. A first inclined block 320 is fixed to the end of the connecting rod 310 away from the long strip block 260. A second inclined block 330 cooperating with the first inclined block 320 is provided on one side of the first inclined block 320. A square plate 340 is fixed to the side of the second inclined block 330 away from the first inclined block 320. A spring telescopic rod 350 is fixed to the bottom end of the square plate 340. A push rod 360 slidably connected inside the base 100 is provided at the top end of the square plate 340. A ejector rod 370 is slidably connected inside the male mold 1910. A return spring 380 located inside the male mold 1910 is sleeved on the surface of the ejector rod 370.

[0020] When the moving plate 180 descends, it drives the vertical shaft 210 to move, causing the vertical shaft 210 to slide inside the delay slot 221. When the vertical shaft 210 descends to a certain position, it will abut against the extrusion rod 220 and drive it to descend synchronously, causing the extrusion rod 220 to compress the gas inside the air storage cylinder 230. The gas will push the telescopic rod 250 to move through the connecting pipe 240, causing the telescopic rod 250 to extend from inside the connecting pipe 240 and push the long strip 260 and the rack 270 to move. When the rack 270 moves, it will cause the ratchet gear 280 to rotate idly until the rack 270 disengages from the meshing with the ratchet gear 280. At the same time, the movement of the long strip 260 will synchronously drive the connecting rod 310 to move, causing the connecting rod 310 to push the first inclined block 320 to cooperate with the second inclined block 330, causing the second inclined block 330 to drive the push rod 360 to move upward through the square plate 340, causing the push rod 360 to abut against the ejector rod 370 and push it upward. Furthermore, the ejector rod 370 will eject the partition blade 1911 formed inside the male mold 1910 from the cavity, ensuring that the ejector rod 370 can apply force smoothly and evenly, avoiding problems such as deformation, scratching or damage of the partition blade 1911 during the ejection process, and further protecting the quality of the partition blade 1911. At this time, the male mold 1910 and the female mold 190 complete the pressing of the partition blade 1911. At this time, reverse the double-shaft motor 130 to make the moving plate 180 drive the female mold 190 to reset. At this time, the long strip 260 will drive the rack 270, the connecting rod 310 and the first inclined block 320 to reset. Under the action of the spring telescopic rod 350, the push rod 360 will retract into the base 100. At this time, the rack 270 meshes with the ratchet gear 280 to make the connecting shaft 290 rotate, and the connecting shaft 290 drives the disc 2910 to rotate synchronously, causing the disc 2910 to drive the processed male mold 1910 out of the working station, and at the same time move the male mold 1910 of the product to be processed into the working station, thus achieving the purpose of rotation, effectively improving the processing efficiency of the partition blade 1911, and further improving the production efficiency.

[0021] Please refer specifically to Figure 1 and Figure 2 The top end of the guide rod 110 is fixed with a top plate 120. The top end of the top plate 120 is installed with a double-shaft motor 130. The output ends on both sides of the double-shaft motor 130 are fixed with rotating rods 140. The ends of the two groups of rotating rods 140 are fixed with first helical gears 150. There is a second helical gear 160 meshing with one side of the first helical gear 150. The center of the second helical gear 160 is fixed with a threaded lead screw 170. The threaded lead screw 170 passes through the moving plate 180 and is rotatably connected to it. The bottom ends on both sides of the moving plate 180 are installed with female molds 190. The formed partition blade 1911 is placed on the top surface of the male mold 1910.

[0022] By starting the dual-axis motor 130 to drive the rotating rods 140 on both sides to rotate, the rotating rods 140 drive the threaded lead screw 170 to rotate through the cooperation of the first bevel gear 150 and the second bevel gear 160, so that the threaded lead screw 170 drives the moving plate 180 and the female mold 190 to descend until the female mold 190 fits with the male mold 1910 to press and form the partition blade 1911.

[0023] Please refer particularly to Figures 3 to 5 , a delay groove 221 for the vertical shaft 210 to slide is provided inside the extrusion rod 220, a plurality of clearance grooves 361 are provided inside the disc 2910 directly below the ejector rod 370, and the top end of the push rod 360 and the top end of the base 100 are on the same horizontal plane.

[0024] By providing the delay groove 221, the stroke of the angle rotated by the disc 2910 can be better matched, and by setting the top end of the push rod 360 and the top end of the base 100 on the same horizontal plane, interference between the push rod 360 and the disc 2910 can be effectively avoided.

[0025] Please refer particularly to Figure 1 , Figure 2 and Figure 6 , the cooling assembly 400 includes a liquid storage cylinder 410 fixed to the center of the top end of the disc 2910, a piston rod 420 is slidably connected inside the liquid storage cylinder 410, a plurality of helical springs 430 are installed between the piston rod 420 and the top end inner wall of the liquid storage cylinder 410, a delivery pipe 440 is connected to one side of the liquid storage cylinder 410, an end of the delivery pipe 440 is fixedly connected to an annular pipe 460, a condensation box 450 connected to the delivery pipe 440 is provided between the annular pipe 460 and the liquid storage cylinder 410, the annular pipe 460 penetrates through the inside of a plurality of male molds 1910, and two L-shaped blocks 470 are fixed to the top end of the moving plate 180, and a square block 480 located directly above the piston rod 420 is fixed between the two L-shaped blocks 470.

[0026] When the moving plate 180 descends, it drives the square block 480 to descend synchronously. When the square block 480 fits against the piston rod 420, it will squeeze the piston rod 420, causing the piston rod 420 to stretch the spiral spring 430 and squeeze the coolant inside the liquid storage cylinder 410, so that the coolant enters the inside of the annular pipe 460 through the delivery pipe 440. Furthermore, it absorbs the heat generated during the long-term pressing production of the male mold 1910, effectively avoiding the deformation of the product caused by excessive heat, improving the dimensional accuracy and consistency of the partition blade 1911. At the same time, it can also improve the performance and service life of the mold. When the moving plate 180 drives the square block 480 to rise, the piston rod 420 resets under the action of the spiral spring 430, causing a negative pressure inside the liquid storage cylinder 410. Then, the coolant inside the annular pipe 460 re-enters the liquid storage cylinder 410 through the delivery pipe 440. When the coolant passes through the condensation box 450, it can better cool the heat inside it for subsequent continuous operation.

[0027] During use, by starting the double-shaft motor 130, the female mold 190 is brought into contact with the male mold 1910 to press and form the partition blade 1911. When the moving plate 180 descends, the push rod 360 will abut against the ejector rod 370 and push it upward. Then, the ejector rod 370 ejects the partition blade 1911 formed inside the male mold 1910 from the cavity, ensuring that the ejector rod 370 can apply force smoothly and evenly, avoiding problems such as deformation, scratching or damage of the partition blade 1911 during the ejection process, and further protecting the quality of the partition blade 1911. At this time, the male mold 1910 and the female mold 190 complete the pressing of the partition blade 1911. Then, reverse the double-shaft motor 130 to drive the moving plate 180 to drive the female mold 190 to reset, and drive the disc 2910 to rotate synchronously through the connecting shaft 290, so that the disc 2910 drives the processed male mold 1910 out of the working station, and at the same time moves the male mold 1910 of the product to be processed into the working station, thus achieving the purpose of rotation, effectively improving the processing efficiency of the partition blade 1911 and further improving the production efficiency. When the moving plate 180 descends, it drives the square block 480 to descend synchronously, so that the coolant enters the inside of the annular pipe 460 through the delivery pipe 440, and further absorbs the heat generated during the long-term pressing production of the male mold 1910, effectively avoiding the deformation of the product caused by excessive heat, and improving the dimensional accuracy and consistency of the partition blade 1911. The parts not involved in this device are the same as or can be implemented using the prior art.

[0028] A processing method for a steam turbine partition blade mold includes the following steps: Step 1: By starting the double-shaft motor 130, the moving plate 180 drives the female mold 190 to fit with the male mold 1910 to press and form the partition blade 1911; Step 2: After the first group of products are formed, the male mold 1910 of the product to be pressed is moved to the working position by the alternating component 200, and the male mold 1910 with the pressed product is synchronously moved out. Step 3: The formed partition blade 1911 can be ejected from the male mold 1910 by the ejecting component 300. Step 4: When processing the partition blade 1911, the male mold 1910 can be cooled by the cooling component 400.

[0029] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and are not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A steam turbine diaphragm blade mold, comprising a base (100), characterized in that: A replacement component (200) is rotatably connected to the top end of the base (100), and an ejection component (300) is arranged inside the base (100). Two groups of guide rods (110) are fixed on both sides of the top end of the base (100). A moving plate (180) is slidably connected to the surface of the guide rods (110). A cooling component (400) is arranged at the top end of the replacement component (200). One side of the bottom end of the moving plate (180) is fixed with a vertical shaft (210). The lower end of the surface of the vertical shaft (210) is slidably connected with a pressing rod (220). The lower end of the surface of the pressing rod (220) is slidably connected with an air storage cylinder (230) fixed on the top of the base (100). A connecting pipe (240) is arranged at the bottom end of the air storage cylinder (230). One end of the inner wall of the connecting pipe (240) is slidably connected with a telescopic rod (250). The end of the telescopic rod (250) far away from the connecting pipe (240) is fixed with a long strip (260). The end of the long strip (260) far away from the telescopic rod (250) is fixed with a rack (270). A ratchet gear (280) meshing with the rack (270) is arranged on one side of the rack (270). A connecting shaft (290) is fixed at the center of the ratchet gear (280). A disc (2910) fitting on the top of the base (100) is arranged at the top end of the connecting shaft (290). A plurality of male molds (1910) are arranged in a circumferential array at the top end of the disc (2910). The ejection component (300) includes a connecting rod (310) fixed on one side of the bottom end of the long strip (260). The end of the connecting rod (310) far away from the long strip (260) is fixed with a first inclined block (320). A second inclined block (330) matching with the first inclined block (320) is arranged on one side of the first inclined block (320). A square plate (340) is fixed on the side of the second inclined block (330) far away from the first inclined block (320). A spring telescopic rod (350) is fixed at the bottom end of the square plate (340). A pushing rod (360) slidably connected inside the base (100) is arranged at the top end of the square plate (340). A ejector rod (370) is slidably connected inside the male mold (1910).

2. The steam turbine diaphragm blade mold according to claim 1, characterized in that: The top ends of the guide rods (110) are fixed with a top plate (120). A double-shaft motor (130) is installed at the top end of the top plate (120). Rotating rods (140) are fixed at the output ends on both sides of the double-shaft motor (130). First helical gears (150) are fixed at the ends of the two rotating rods (140). A second helical gear (160) meshing with the first helical gear (150) is arranged on one side of the first helical gear (150).

3. The steam turbine diaphragm blade mold according to claim 2, characterized in that: A threaded lead screw (170) is fixed at the center of the second helical gear (160). The threaded lead screw (170) penetrates through the moving plate (180) and is rotatably connected with the moving plate (180). Female molds (190) are installed on both sides of the bottom end of the moving plate (180). A formed partition blade (1911) is placed on the top surface of the male mold (1910).

4. A steam turbine diaphragm blade mold according to claim 1, characterized in that: A delay groove (221) for the vertical shaft (210) to slide is arranged inside the pressing rod (220).

5. A steam turbine diaphragm blade mold according to claim 1, characterized in that: Below the ejector rod (370), there are multiple clearance grooves (361) opened inside the disc (2910). The top end of the push rod (360) and the top end of the base (100) are on the same horizontal plane. A return spring (380) located inside the male mold (1910) is sleeved on the surface of the ejector rod (370).

6. The steam turbine diaphragm blade mold according to claim 1, characterized in that: The cooling assembly (400) includes a liquid storage cylinder (410) fixed at the center of the top end of the disc (2910). A piston rod (420) is slidably connected inside the liquid storage cylinder (410). Multiple helical springs (430) are installed between the piston rod (420) and the top end inner wall of the liquid storage cylinder (410). One side of the liquid storage cylinder (410) is connected with a delivery pipe (440). The end of the delivery pipe (440) is fixedly connected with an annular pipe (460). A condensation box (450) connected to the delivery pipe (440) is provided between the annular pipe (460) and the liquid storage cylinder (410). The annular pipe (460) passes through multiple male molds (1910).

7. A steam turbine diaphragm blade mold according to claim 1, characterized in that: Two L-shaped blocks (470) are fixed at the top end of the moving plate (180). A square block (480) located directly above the piston rod (420) is fixed between the two L-shaped blocks (470).

8. A machining method for a steam turbine diaphragm blade mold according to any one of claims 1-7, characterized in that: Using the steam turbine diaphragm blade mold according to any one of claims 1-7, the following steps are included: Step 1: By starting the double-shaft motor (130), the moving plate (180) drives the female mold (190) to fit with the male mold (1910) to press and form the diaphragm blade (1911). Step 2: When the first group of products is formed, the male mold (1910) of the product to be pressed is moved to the working station through the alternating assembly (200), and the male mold (1910) of the product after pressing is synchronously moved out. Step 3: The pressed and formed diaphragm blade (1911) can be ejected from the male mold (1910) through the ejecting assembly (300). Step 4: When processing the diaphragm blade (1911), the male mold (1910) can be cooled by the cooling assembly (400).

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