Variable casting device for parts of offshore wind turbine

Abstract

The invention belongs to the technical field of part casting, and discloses a variable casting device for offshore wind turbine parts, which comprises a casting table, a first hydraulic rod is fixedly connected to the middle of the top end of the casting table, an injection piston is fixedly connected to the output end of the injection piston, and a funnel is fixedly connected to one side of the top of the casting table. A driving motor is started to push a threaded rod and a piston plate to move, at the moment, a first rotating shaft rotates to synchronously drive a first connecting rod to rotate, the first connecting rod rotates to drive a circular plate to rotate, and the circular plate rotates to drive a sliding column and a sealing plate to move towards the two sides through a sliding groove; and the liquid aluminum flows out and flows into the forming cavity through the second flow guide pipe for secondary input, so that the conditions of volume reduction and insufficient thickness caused by cooling shrinkage after the casting is formed are avoided, the size precision is improved, the subsequent processing requirements are reduced, the structural integrity is enhanced, and the risks of cracks and deformation are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of component casting, and in particular relates to a variable casting device for offshore wind turbine components. Background Art

[0002] Casting is a process of melting metal into liquid and pouring it into a mold, cooling and solidifying to obtain a casting with a predetermined shape, size and performance. It is one of the basic processes in the modern machinery manufacturing industry. It has the characteristics of wide adaptability and low cost, and is suitable for the production of parts with complex shapes and parts that are difficult to cut. In casting, casting is divided into sand casting, mold casting, investment casting, pressure casting, centrifugal casting, metal mold casting, lost foam casting, continuous casting, etc. Among them, pressure casting is a metal casting process that uses a mold cavity to apply high pressure to the molten metal to form complex shapes and thin-walled cross-section castings.

[0003] First, in the existing casting process of offshore wind turbine components, solid aluminum is usually heated to become liquid aluminum, which is then filled into a mold and cooled to form. In this process, the mass per unit volume is reduced. After the casting is formed, the distance between molecules increases, and the number of aluminum atoms per unit volume decreases, resulting in a reduction in the overall volume. This may cause the casting to be insufficiently thick, causing the casting to fail to meet processing standards during processing, affecting the processing effect. In addition, during the casting process, the liquid aluminum will shrink when cooling, which may cause voids or defects inside the casting, thereby causing the molding effect of the casting and affecting the use of the casting. Summary of the invention

[0004] The object of the present invention is to provide a variable casting device for offshore wind turbine components to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a variable casting device for offshore wind turbine components, comprising a casting table, a first hydraulic rod is fixedly connected to the middle of the top of the casting table, an output end of the first hydraulic rod is fixedly connected to a shot piston, a funnel is fixedly connected to one side of the top of the casting table, a first guide tube is fixedly connected to the bottom of the funnel, the first guide tube is fixedly connected to the casting table, the outer surface of the first guide tube is fixedly connected to a guide side tube, a driving motor is fixedly connected to the inside of the casting table, the output shaft of the driving motor is fixedly connected to a mounting sleeve, one end of the guide side tube is fixedly connected to the mounting sleeve, the output end of the driving motor is fixedly connected to a first rotating shaft, and the first rotating shaft is fixedly connected to the first rotating shaft. A first internally threaded gear is fixedly connected to the outside of the shaft, and a first gear is meshedly connected to an inner side of the first internally threaded gear, a second rotating shaft is fixedly connected to the middle of one of the first gears, a connecting block is movably sleeved on one end of one of the second rotating shafts, and the connecting block is fixedly connected to the mounting sleeve, a second internally threaded gear is arranged on one side of one of the connecting blocks, a first supporting plate is arranged at the bottom of the second internally threaded gear, the first supporting plate is fixedly connected to the mounting sleeve, a threaded sleeve is fixedly connected to the bottom of the second internally threaded gear, a threaded rod is threadedly connected to the inner side of the threaded sleeve, a piston plate is fixedly connected to the bottom of the threaded rod, an opening and closing assembly is arranged inside the mounting sleeve, and an ejection assembly is arranged on the top of the casting table.

[0006] Preferably, the opening and closing assembly includes a plurality of first connecting rods, each of which is fixedly connected to the first internally threaded gear, and a circular plate is fixedly connected to one end of each of the first connecting rods, and two sliding grooves are respectively provided on both sides of the interior of the circular plate, and two sliding columns are respectively slidably connected inside the two sliding grooves, and a sealing plate is fixedly connected to the bottom of the two sliding columns, and the sealing plate is slidably connected to the casting table, and a second guide pipe is fixedly connected to the bottom of the mounting sleeve.

[0007] Preferably, the ejection assembly includes a plurality of second connecting rods, the plurality of second connecting rods are fixedly connected to the casting table, and a shaping mold is fixedly connected to the bottom of the second connecting rods.

[0008] Preferably, the ejection assembly also includes a second hydraulic rod, which is fixedly connected to the middle section inside the casting table, and the output end of the second hydraulic rod is fixedly connected to a movable mold, and the top inside the casting table is fixedly connected to a second support plate, and the movable mold is arranged on the top of the second support plate. The output end of the second hydraulic rod passes through the casting table and the second support plate respectively, and a plurality of support rods are slidably connected to the inside of the movable mold around, and the plurality of support rods are fixedly connected to the second support plate, and a plurality of ejector blocks are fixedly connected to the tops of the plurality of support rods.

[0009] Preferably, the two groups of the first gears are meshed with each other and staggered up and down, and are rotatably mounted on the top of the connecting block. The first support plate is a circular ring structure, and the first support plate does not contact the threaded sleeve.

[0010] Preferably, the lower end of the interior of the mounting sleeve is a rectangular chamber, the piston plate and the rectangular structure of the lower end of the mounting sleeve are equal in length and width, and the upper end of the interior of the mounting sleeve is a circular chamber.

[0011] Preferably, a pressure cavity is opened in the middle of the shaping mold, the diameter of the pressure cavity is the same as that of the injection piston, and the positions of the pressure cavity and the injection piston correspond.

[0012] Preferably, the second flow guide tube and the first flow guide tube both extend into the interior of the shaping mold and are connected to the internal mold forming cavity thereof.

[0013] Preferably, after the movable mold is lifted and matched with the fixing mold, the top surface of the top block is flush with the top surface of the movable mold, and a plurality of triangular grooves corresponding to the top block are provided on the top of the movable mold.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention starts the driving motor to push the threaded rod and the piston plate to move. At this time, the rotation of the first rotating shaft synchronously drives the rotation of the first connecting rod, and the rotation of the first connecting rod drives the circular plate to rotate. The rotation of the circular plate drives the sliding column and the sealing plate to move to both sides through the slide groove. The liquid aluminum flows out through the second guide pipe and flows into the interior of the molding chamber for secondary input, thereby avoiding the volume reduction and insufficient thickness of the casting caused by cooling shrinkage after molding, thereby improving dimensional accuracy and reducing the need for subsequent processing, enhancing structural integrity, and reducing the risk of cracks and deformation. At the same time, the secondary input of liquefied aluminum for casting can also avoid the appearance of gaps or defects in the casting, thereby causing the molding effect of the casting and affecting the use of the casting.

[0015] 2. The present invention starts the driving motor to drive the first connecting rod to rotate and drive the circular plate to rotate. The rotation of the circular plate drives the sliding column and the sealing plate to move to both sides through the slide groove and then open. When the sliding column and the sealing plate move to both sides, the opening and closing speeds are controlled by the driving motor. When the liquefied aluminum is input for the second time, the flow speed can be better controlled to meet the needs of different casting processes and products. At the same time, it can be adjusted according to the casting to make the casting more complete, improve the product molding effect, and improve work efficiency.

[0016] 3. After the casting is completely cooled and formed, the second hydraulic rod of the present invention is started to drive the movable mold to descend. At this time, the molded casting will fit with the surface of the movable mold. At this time, the movable mold descends, and the ejector block and the support rod will slowly move away from the inside of the triangular groove. During the continuous descent of the movable mold, the molded casting will be ejected by the ejector block, thereby improving the casting efficiency and reducing the production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of a casting table of the present invention; Figure 3 It is a structural schematic diagram of the flow guide side pipe of the present invention; Figure 4 is a cross-sectional view of the installation sleeve of the present invention; Figure 5 is a cross-sectional view of a first internally threaded gear of the present invention; Figure 6 It is a structural schematic diagram of the circular plate of the present invention; Figure 7 It is a structural schematic diagram of the ejection assembly of the present invention; Figure 8 It is a cross-sectional view of the shaping mold of the present invention; Fig. 9 It is a schematic structural diagram of the first gear of the present invention.

[0018] In the figure: 1, casting table; 2, first hydraulic rod; 3, injection piston; 4, funnel; 5, first guide tube; 501, guide side tube; 6, driving motor; 7, mounting sleeve; 8, first rotating shaft; 9, first internal threaded gear; 10, first gear; 11, second rotating shaft; 12, connecting block; 13, second internal threaded gear; 14, first supporting plate; 15, threaded sleeve; 16, threaded rod; 17, piston plate; 18, first connecting rod; 19, circular plate; 20, slide groove; 21, sliding column; 22, sealing plate; 23, second connecting rod; 24, shaping mold; 25, second hydraulic rod; 26, second supporting plate; 27, dynamic mold; 28, supporting rod; 29, top block; 30, second guide tube. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 8As shown, an embodiment of the present invention provides a variable casting device for offshore wind turbine parts, including a casting table 1, a first hydraulic rod 2 is fixedly connected to the middle of the top of the casting table 1, an injection piston 3 is fixedly connected to the output end of the first hydraulic rod 2, a funnel 4 is fixedly connected to one side of the top of the casting table 1, a first guide pipe 5 is fixedly connected to the bottom of the funnel 4, the first guide pipe 5 is fixedly connected to the casting table 1, the outer surface of the first guide pipe 5 is fixedly connected to a guide side pipe 501, a driving motor 6 is fixedly connected to the inside of the casting table 1, and the output shaft of the driving motor 6 is fixedly connected to The output end of the driving motor 6 is fixedly connected to the first rotating shaft 8, the outer side of the first rotating shaft 8 is fixedly connected to the first internally threaded gear 9, and the inner side of the first internally threaded gear 9 is meshed with the first gear 10, and the middle part of one of the first gears 10 is fixedly connected to the second rotating shaft 11, and one end of one of the second rotating shafts 11 is movably sleeved with a connecting block 12, and the connecting block 12 is fixedly connected to the mounting sleeve 7, and one side of one of the connecting blocks 12 is provided with a second internally threaded gear 13, and the second internally threaded gear 13 is meshed with the first gear 10. A first support plate 14 is provided at the bottom of the gear 13, and the first support plate 14 is fixedly connected to the mounting sleeve 7. A threaded sleeve 15 is fixedly connected to the bottom of the second internally threaded gear 13. A threaded rod 16 is threadedly connected to the inside of the threaded sleeve 15, and a piston plate 17 is fixedly connected to the bottom of the threaded rod 16. An opening and closing component is provided inside the mounting sleeve 7, and an ejection component is provided on the top of the casting table 1. The threaded rod 16 and the piston plate 17 are pushed to move by starting the driving motor 6. At this time, the first rotating shaft 8 rotates synchronously to drive the first connecting rod 18 to rotate, and the rotation of the first connecting rod 18 drives the circular plate 19 to rotate The circular plate 19 rotates through the slide groove 20 to drive the sliding column 21 and the sealing plate 22 to move to both sides, and the liquid aluminum flows out through the second guide pipe 30 into the molding chamber for secondary input, thereby avoiding the volume reduction and insufficient thickness of the casting due to cooling shrinkage after molding, thereby improving dimensional accuracy and reducing the need for subsequent processing, enhancing structural integrity, and reducing the risk of cracks and deformation. At the same time, the secondary input of liquefied aluminum for casting can also avoid the appearance of voids or defects inside the casting, thereby causing the molding effect of the casting and affecting the use of the casting.

[0021] Among them, the opening and closing components include multiple first connecting rods 18, multiple first connecting rods 18 are fixedly connected to the first internally threaded gear 9, and one end of the multiple first connecting rods 18 is fixedly connected to a circular plate 19. Two slide grooves 20 are respectively provided on both sides of the circular plate 19. Two sliding columns 21 are slidably connected inside the two slide grooves 20. The bottoms of the two sliding columns 21 are fixedly connected to sealing plates 22. The sealing plate 22 is slidably connected to the casting table 1. A second guide tube 30 is fixedly connected to the bottom of the mounting sleeve 7. The first connecting rods 18 are driven to rotate by the driving motor 6 to drive the circular plate 19 to rotate. The rotation of the circular plate 19 drives the sliding column 21 and the sealing plate 22 to move to both sides through the slide groove 20 and then open. When the sliding column 21 and the sealing plate 22 move to both sides, they are driven by the driving motor 6 to control their opening and closing speed. When the liquefied aluminum is input for the second time, the flow speed can be better controlled to meet the needs of different casting processes and products. At the same time, it can be adjusted according to the casting to make the casting more complete, improve the product molding effect, and improve work efficiency.

[0022] The ejection assembly includes a plurality of second connecting rods 23, which are fixedly connected to the casting table 1, and a shaping mold 24 is fixedly connected to the bottom of the second connecting rod 23. The ejection assembly also includes a second hydraulic rod 25, which is fixedly connected to the middle section of the casting table 1, and the output end of the second hydraulic rod 25 is fixedly connected to a movable mold 27. A second support plate 26 is fixedly connected to the top of the inner side of the casting table 1, and the movable mold 27 is arranged on the top of the second support plate 26. The output ends of the second hydraulic rod 25 pass through the casting table 1 and the second support plate 26 respectively. A plurality of support rods 28 are slidably connected to the inside of the movable mold 27, and the plurality of support rods 28 are all connected to the second support plate 26. The plate 26 is fixedly connected, and multiple top blocks 29 are fixedly connected to the tops of multiple support rods 28 respectively. The two groups of first gears 10 are meshed with each other and staggered up and down, and are rotatably installed on the top of the connecting block 12. The first support plate 14 is a circular ring structure, and the first support plate 14 does not contact the threaded sleeve 15. After the casting is completely cooled and formed, the second hydraulic rod 25 is started to drive the movable mold 27 to descend. At this time, the molded casting will fit the surface of the movable mold 27. At this time, the movable mold 27 descends, and the top block 29 and the support rod 28 will slowly move away from the inside of the triangular groove. In the process of the continuous descent of the movable mold 27, the molded casting will be ejected by the top block 29, thereby improving the casting efficiency and reducing the production cycle.

[0023] Among them, the lower end of the mounting sleeve 7 is a rectangular chamber, the length and width of the piston plate 17 and the rectangular structure at the lower end of the mounting sleeve 7 are equal, and the upper end of the mounting sleeve 7 is a circular chamber. The rectangular chamber can limit the piston plate 17, and when the second internal threaded gear 13 rotates, the piston plate 17 can be driven out through the thread.

[0024] Among them, a pressure chamber is opened in the middle of the shaping mold 24, and the pressure chamber has the same diameter as the injection piston 3, and the position of the pressure chamber corresponds to the injection piston 3. The second guide tube 30 and the first guide tube 5 both extend into the interior of the shaping mold 24 and are connected to the internal mold molding cavity thereof. By making the position and diameter of the pressure chamber and the injection piston 3 the same, the injection piston 3 can better pressurize the die-casting process and improve the molding effect.

[0025] Among them, after the movable mold 27 is lifted and matched with the fixing mold 24, the top surface of the top block 29 is flush with the top surface of the movable mold 27. The top of the movable mold 27 is provided with a plurality of triangular grooves corresponding to the top block 29, so that the top block 29 can perfectly match with the movable mold 27, thereby not affecting the molding of the casting. At the same time, the casting can be ejected when the movable mold 27 moves, thereby increasing the discharge speed and improving work efficiency.

[0026] Working principle: When die casting is required, the second hydraulic rod 25 is started to eject the movable mold 27 and cooperate with the fixing mold 24 to form a molding cavity. At this time, the melted liquid metal is poured from the funnel 4, and the liquid aluminum flows from the funnel 4 through the first guide pipe 5 into the fixing mold 24. At this time, due to the existence of the guide side pipe 501, a part of the liquid aluminum will flow from the guide side pipe 501 into the interior of the mounting sleeve 7. Since the circular plate 19 is in a closed state, the liquid aluminum will accumulate inside the mounting sleeve 7. At the same time, the first hydraulic rod 2 is started to drive the injection piston 3 to press down and pressurize the inside of the molding cavity, so that another part of the liquid aluminum is die-cast in the molding cavity. After the liquid aluminum die-casting is cooled, the casting is formed. However, during the molding process, the shrinkage due to cooling will cause the volume to decrease. At this time, the drive motor 6 is started, and the drive motor 6 starts to drive the first shaft 8 to rotate. The rotation of the first shaft 8 drives the first internally threaded gear 9 to rotate. The rotation of the first internally threaded gear 9 drives the first gear 10 to rotate. The rotation of the gear 10 drives another first gear 10 to rotate, and the rotation of the other first gear 10 drives the second internally threaded gear 13 to rotate, and the rotation of the second internally threaded gear 13 drives the threaded sleeve 15 to rotate, and the rotation of the threaded sleeve 15 drives the threaded rod 16 and the piston plate 17 to move. At this time, the rotation of the first rotating shaft 8 synchronously drives the first connecting rod 18 to rotate, and the rotation of the first connecting rod 18 drives the circular plate 19 to rotate, and the rotation of the circular plate 19 drives the sliding column 21 and the sealing plate 22 to move to both sides through the slide groove 20, and the liquid aluminum flows out through the second guide pipe 30 into the molding chamber for secondary input, thereby avoiding the volume reduction and insufficient thickness of the casting caused by cooling shrinkage after molding, thereby improving dimensional accuracy and reducing the demand for subsequent processing, enhancing structural integrity, and reducing the risk of cracks and deformation. At the same time, the secondary input of liquefied aluminum for casting can also avoid the appearance of voids or defects inside the casting, thereby causing the molding effect of the casting and affecting the use of the casting; After the casting is completely cooled and formed, the second hydraulic rod 25 starts to drive the movable mold 27 to descend. At this time, the molded casting will fit the surface of the movable mold 27. At this time, the movable mold 27 descends, and the ejector block 29 and the support rod 28 will slowly move away from the inside of the triangular groove. During the continuous descent of the movable mold 27, the molded casting will be ejected by the ejector block 29, thereby improving casting efficiency and reducing production cycle.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A variable casting device for offshore wind turbine parts, comprising a casting table (1), a first hydraulic rod (2) being fixedly connected to the middle of the top end of the casting table (1), and an injection piston (3) being fixedly connected to the output end of the first hydraulic rod (2), characterized in that: A funnel (4) is fixedly connected to one side of the top of the casting table (1), a first guide tube (5) is fixedly connected to the bottom of the funnel (4), the first guide tube (5) is fixedly connected to the casting table (1), the outer surface of the first guide tube (5) is fixedly connected to a guide side tube (501), a driving motor (6) is fixedly connected to the inside of the casting table (1), the output shaft of the driving motor (6) is fixedly connected to a mounting sleeve (7), one end of the guide side tube (501) is fixedly connected to the mounting sleeve (7), the output end of the driving motor (6) is fixedly connected to a first rotating shaft (8), the outer side of the first rotating shaft (8) is fixedly connected to a first internally threaded gear (9), the inner side of the first internally threaded gear (9) is meshingly connected to a first gear (10), one of the first gears A second rotating shaft (11) is fixedly connected to the middle of the wheel (10), one end of one of the second rotating shafts (11) is movably sleeved with a connecting block (12), the connecting block (12) is fixedly connected to the mounting sleeve (7), a second internally threaded gear (13) is arranged on one side of one of the connecting blocks (12), a first supporting plate (14) is arranged at the bottom of the second internally threaded gear (13), the first supporting plate (14) is fixedly connected to the mounting sleeve (7), a threaded sleeve (15) is fixedly connected to the bottom of the second internally threaded gear (13), a threaded rod (16) is threadedly connected inside the threaded sleeve (15), a piston plate (17) is fixedly connected to the bottom of the threaded rod (16), an opening and closing assembly is arranged inside the mounting sleeve (7), and an ejection assembly is arranged on the top of the casting table (1).

2. A variable casting device for offshore wind turbine parts according to claim 1, characterized in that: The opening and closing assembly comprises a plurality of first connecting rods (18), each of which is fixedly connected to a first internally threaded gear (9), and each of which is fixedly connected to a circular plate (19) at one end. Two sliding grooves (20) are respectively provided on both sides of the circular plate (19), and two sliding columns (21) are respectively slidably connected inside the two sliding grooves (20). The bottoms of the two sliding columns (21) are fixedly connected to a sealing plate (22), and the sealing plate (22) is slidably connected to the casting table (1). The bottom of the mounting sleeve (7) is fixedly connected to a second guide pipe (30).

3. A variable casting device for offshore wind turbine parts according to claim 2, characterized in that: The ejection assembly comprises a plurality of second connecting rods (23), the plurality of second connecting rods (23) being fixedly connected to the casting table (1), and a shaping mold (24) being fixedly connected to the bottom of the second connecting rods (23).

4. A variable casting device for offshore wind turbine parts according to claim 3, characterized in that: The ejection assembly further comprises a second hydraulic rod (25), the second hydraulic rod (25) being fixedly connected to the middle section inside the casting table (1), the output end of the second hydraulic rod (25) being fixedly connected to a movable mold (27), the top inside the casting table (1) being fixedly connected to a second support plate (26), the movable mold (27) being arranged on the top of the second support plate (26), the output end of the second hydraulic rod (25) respectively passing through the casting table (1) and the second support plate (26), a plurality of support rods (28) being slidably connected to the inside of the movable mold (27) around the periphery, the plurality of support rods (28) being fixedly connected to the second support plate (26), and a plurality of ejector blocks (29) being fixedly connected to the tops of the plurality of support rods (28).

5. A variable casting device for offshore wind turbine parts according to claim 4, characterized in that: The two groups of the first gears (10) mesh with each other and are staggered up and down, and are rotatably mounted on the top of the connecting block (12); the first support plate (14) is a circular ring structure; the first support plate (14) does not contact the threaded sleeve (15).

6. A variable casting device for offshore wind turbine parts according to claim 5, characterized in that: The lower end of the interior of the mounting sleeve (7) is a rectangular chamber, the piston plate (17) and the rectangular structure at the lower end of the mounting sleeve (7) are equal in length and width, and the upper end of the interior of the mounting sleeve (7) is a circular chamber.

7. A variable casting device for offshore wind turbine parts according to claim 6, characterized in that: A pressure cavity is provided in the middle of the shaping mold (24), the diameter of the pressure cavity is the same as that of the injection piston (3), and the positions of the pressure cavity and the injection piston (3) correspond.

8. A variable casting device for offshore wind turbine parts according to claim 7, characterized in that: The second flow guide tube (30) and the first flow guide tube (5) both extend into the interior of the shaping mold (24) and are connected to the internal mold forming cavity.

9. A variable casting device for offshore wind turbine parts according to claim 8, characterized in that: After the movable mold (27) is lifted and matched with the fixed mold (24), the top surface of the top block (29) is flush with the top surface of the movable mold (27), and a plurality of triangular grooves corresponding to the top block (29) are formed on the top of the movable mold (27).

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