Injection manifold for a hollow blade mold

Abstract

The present application belongs to the technical field of injection molding of wax mold, especially to an injection shunt structure of hollow blade mold, which comprises an operation table, the outer wall of one side of the operation table is provided with a protection box, the inner wall of one side of the protection box is provided with a shunt frame, the inner wall of the shunt frame is provided with a rotating column through and rotatably connected, the outer wall of the rotating column is welded with a shunt plate, and the outer wall of one side of the operation table is welded with an L-shaped fixed plate. The present application realizes flexible control of wax shunt, the shunt plate can change position under the driving of the rotating column, can stably maintain the shunt proportion, solves the problem of position deviation of the ceramic core, realizes linkage control of shunt and feeding, makes the shunt plate automatically complete the switching from vertical to horizontal, does not need additional power control, simplifies the operation process, ensures that the shunt process can be reliably carried out, realizes dynamic balance of the wax flow rate, avoids direct impact of the wax on the ceramic core, effectively prevents the ceramic core from cracking, and improves the precision of flow rate control.

Description

Technical Field

[0001] The invention relates to the technical field of wax compression mold injection molding, in particular to an injection diversion structure of a hollow blade mold. Background Art

[0002] Wax injection molding technology is one of the key processes for manufacturing precision castings in the fields of aerospace, automobiles, etc. This technology injects molten wax into a preset mold cavity, and after the wax cools and solidifies, a wax mold is formed that is consistent with the shape of the mold cavity. The wax mold is then used as a basis for subsequent shell making, dewaxing, pouring and other processes to finally obtain the required metal casting. When manufacturing complex structural parts such as hollow blades, it is usually necessary to place a ceramic core in the mold cavity to form a hollow structure inside the blade. The precise positioning and stable state of the ceramic core directly affect the dimensional accuracy and structural integrity of the final casting. Therefore, during the wax injection process, ensuring that the ceramic core does not deviate or is not damaged is an important consideration for this technology.

[0003] However, conventional injection molding technology has the following shortcomings when applied to the manufacture of hollow blades with ceramic cores:

[0004] On the one hand, conventional injection methods often inject wax directly into the mold cavity through a single channel. During the flow of wax, it is easy to produce uneven impact force on the ceramic core. Especially during high-speed injection, this impact force may cause cracks in the ceramic core, affecting its structural stability and causing defects in subsequent castings.

[0005] On the other hand, due to the uneven pressure distribution during wax injection, the ceramic core is prone to shifting in position within the mold cavity, making it difficult to ensure the dimensional accuracy of the hollow blade structure. Furthermore, single-channel injection can result in inconsistent wax filling speeds, with excessively fast flow rates in some areas exacerbating the impact on the ceramic core. These issues severely restrict the manufacturing quality and production efficiency of hollow blade wax models. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the present invention provides an injection diversion structure for a hollow blade mold, which overcomes the shortcomings of the existing technology and effectively solves the problems that, on the one hand, the impact force may cause cracks in the ceramic core, affecting its structural stability and thus causing defects in subsequent castings; on the other hand, due to the uneven pressure distribution during the injection of the wax material, the position of the ceramic core in the mold cavity is easily offset, resulting in difficulty in ensuring the dimensional accuracy of the hollow blade structure.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An injection diversion structure for a hollow blade mold, comprising an operating table, a protective box provided on one outer wall of the operating table, a diversion frame installed through the inner wall of one side of the protective box, a rotating column passing through the inner wall of the diversion frame and rotatably connected, a diversion plate welded to the outer wall of the rotating column, an L-shaped fixing plate welded to the outer wall of one side of the operating table, and a torsion spring fixedly connected between the L-shaped fixing plate and the rotating column;

[0009] The end of the rotating column away from the torsion spring is fixedly connected to a quarter gear, and a rack is meshed on the outer wall of the quarter gear. A lifting column is welded to the outer wall of one side of the rack, and a blocking piston is provided on the outer wall of the bottom of the lifting column. A diverter sleeve is slidably connected to the outer wall of the blocking piston, and a wax inlet pipe is fixedly connected to the outer wall of the bottom of the diverter sleeve through a flange.

[0010] The outer wall of one side of the diversion sleeve is fixedly connected to the main pipe through a flange, the outer wall of one end of the main pipe is fixedly connected to the nozzle through a flange, and the outer wall of one side of the nozzle is fixedly connected to the outer shell through a flange, an inner shell is provided inside the outer shell, and a branch pipe is welded between the inner shell and the main pipe, a push plate is slidably connected to the inner wall of the inner shell, and a connecting column is welded at the center of the outer wall of one side of the push plate, a flow dynamic balancing plug is welded to the outer wall of one end of the connecting column, and a compensation spring is fixedly connected between the push plate and the inner shell.

[0011] Preferably, the branch pipe is provided through the inner wall of the shell, and the shell is fixedly connected between the nozzle and the diversion frame through a flange.

[0012] Preferably, a lower limiting strip is provided on the bottom inner wall of the diverter frame, and an upper limiting strip is provided on the top inner wall of the diverter frame, and the diverter plate is located between the lower limiting strip and the upper limiting strip.

[0013] Preferably, a sliding sleeve is welded to the outer wall of one side of the flow dynamic balancing plug, and the sliding sleeve is slidably connected to the outer wall of the inner shell.

[0014] Preferably, the top outer wall of the operating table is fixedly connected to the base membrane by screws, and the outer wall of one end of the diversion frame is fixedly connected to the inner wall of one side of the base membrane. A mold cavity is opened on the top outer wall of the base membrane, and a ceramic core is placed inside the mold cavity. A plug rod is provided on the outer wall of one end of the ceramic core, and the plug rod is inserted into the inner wall of the mold cavity.

[0015] Preferably, the operating table and the protective box are fixedly connected with symmetrically distributed reinforcing ribs by screws, and an angle code is welded on the outer wall of the diversion sleeve, and the outer wall of one side of the angle code is fixedly connected to the inner wall of the protective box by screws.

[0016] Preferably, the top outer wall of the operating table is fixedly connected to the gantry by screws, and the center of the top outer wall of the gantry is fixedly connected to a hydraulic push rod by screws, the piston rod of the hydraulic push rod is fixedly connected to the top mold, and the top mold is located directly above the bottom film.

[0017] Preferably, the top outer wall of the top mold is fixedly connected with symmetrically distributed guide rods, and the top outer wall of the gantry is located on both sides of the hydraulic push rod and linear bearings are installed through it, and the guide rods are slidably connected to the inner walls of the linear bearings.

[0018] Preferably, positioning tubes are provided on both sides of the outer wall of the top of the operating table on the bottom film, and positioning columns are provided on both sides of the outer wall of the top mold, and the positioning tubes and the positioning columns correspond to each other one by one.

[0019] Preferably, a sub-control switch is provided at the corner of the top outer wall of the operating table, and a support plate is welded to the outer wall of one side of the gantry. The top outer wall of the support plate is fixedly connected to a PLC controller by screws, and the PLC controller is connected to the sub-control switch and the hydraulic push rod through signal lines.

[0020] The beneficial effects of the present invention are:

[0021] The injection diversion structure of the hollow blade mold of the present invention realizes flexible control of wax diversion by providing an operating table, a protective box, a diversion frame, a rotating column, a diversion plate, an L-shaped fixed plate, a torsion spring and other structures. The diversion plate can change its position under the drive of the rotating column, and can stably maintain the diversion ratio, ensuring that the amount of wax entering the mold cavity above the diversion plate is greater than that below. The pressure difference is used to effectively prevent the ceramic core from floating upward, solving the problem of ceramic core position deviation. At the same time, the torsion spring can drive the diversion plate to reset when the wax stops feeding, and cooperate with the lower limit bar and the upper limit bar to block the diversion frame to prevent the wax from overflowing in the opposite direction, thereby ensuring the stability of the wax in the mold cavity.

[0022] The injection diversion structure of the hollow blade mold of the present invention utilizes components such as a quarter gear, rack, lifting column, blocking piston, diversion sleeve, and wax feed pipe to achieve linked control of diversion and feeding. When the wax enters the diversion sleeve, it pushes the blocking piston, which in turn drives the rack via the lifting column to rotate, allowing the diversion plate to automatically switch from vertical to horizontal orientation. This eliminates the need for additional power control, simplifies the operation process, and ensures reliable diversion.

[0023] The injection diversion structure of the hollow blade mold of the present invention, the push plate, connecting column, flow dynamic balance plug, compensation spring and other designs realize the dynamic balance of the wax flow rate. When the wax flow rate is too fast, part of the wax enters the inner shell through the branch pipe, pushing the push plate to make the flow dynamic balance plug reduce the cross-sectional area at the nozzle and reduce the flow rate. When the flow rate is too slow, the compensation spring pulls the push plate to reset, expand the cross-sectional area, avoid the wax directly impacting the ceramic core, effectively prevent it from cracking, and improve the accuracy of flow rate control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the hollow blade mold with the bottom mold and the top mold separated from the injection diversion structure proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of the bottom film and top mold of the injection diversion structure of the hollow blade mold proposed by the present invention when they are closed;

[0026] Figure 3 This is a bottom view of the overall structure of the injection diversion structure of a hollow blade mold proposed by the present invention;

[0027] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of a hollow blade mold with a diverter frame connected to a base film in an injection diverter structure according to the present invention;

[0029] Figure 6 This is a top view of a diversion frame of an injection diversion structure of a hollow blade mold proposed by the present invention connected to a base film;

[0030] Figure 7 This is a schematic diagram of the internal connection between the diverter frame and the diverter sleeve of the injection diverter structure of the hollow blade mold proposed by the present invention;

[0031] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of part B;

[0032] Figure 9 This is a schematic diagram of the connection structure of the diverter frame, L-shaped fixing plate and torsion spring of the injection diverter structure of the hollow blade mold proposed by the present invention;

[0033] Figure 10 This is a schematic diagram of the internal structure of the outer shell and inner shell of the injection diversion structure of a hollow blade mold proposed by the present invention;

[0034] Figure 11This is a structural schematic diagram of a hollow blade mold injection diversion structure proposed by the present invention, in which the diversion plate is placed horizontally, resulting in a cross-sectional area of ​​3:2 inside the diversion frame.

[0035] Figure: 1. Operating table; 2. Protective box; 3. Diverter frame; 4. Rotating column; 5. Diverter plate; 6. L-shaped fixing plate; 7. Torsion spring; 8. Quarter gear; 9. Rack; 10. Lifting column; 11. Blocking piston; 12. Diverter sleeve; 13. Main pipe; 14. Nozzle; 15. Outer shell; 16. Branch pipe; 17. Inner shell; 18. Push plate; 19. Connecting column; 20. Flow dynamic balance plug; 21 , compensation spring; 22. Wax feed tube; 23. Lower limit strip; 24. Upper limit strip; 25. Sliding sleeve; 26. Bottom film; 27. Mold cavity; 28. Insert rod; 29. ​​Ceramic core; 30. Reinforcement rib; 31. Angle code; 32. Gantry; 33. Hydraulic push rod; 34. Top mold; 35. Guide rod; 36. Positioning tube; 37. Positioning column; 38. Sub-control switch; 39. Support plate; 40. PLC controller. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Reference Figures 1-11 , Example 1, an injection diversion structure of a hollow blade mold, comprising an operating table 1, a protective box 2 is provided on the outer wall of one side of the operating table 1, and a diversion frame 3 is installed through the inner wall of one side of the protective box 2, a rotating column 4 is passed through and rotatably connected to the inner wall of the diversion frame 3, and a diversion plate 5 is welded on the outer wall of the rotating column 4, an L-shaped fixing plate 6 is welded to the outer wall of one side of the operating table 1, and a torsion spring 7 is fixedly connected between the L-shaped fixing plate 6 and the rotating column 4.

[0038] Through the above scheme, the operating table 1 provides stable support for the entire device, the protective box 2 protects its internal structure to avoid interference from external factors, the diverter frame 3 serves as a channel for wax diversion, and the rotating column 4 inside it provides a rotation fulcrum for the diverter plate 5. The diverter plate 5 can change its position in the diverter frame 3 by rotation, thereby adjusting the wax flow ratio of the upper channel and the lower channel in the diverter frame 3. Among them, when the diverter plate 5 is distributed horizontally, the upper part of the diverter plate 5 inside the diverter frame 3 is the upper channel in the diverter frame 3, and the lower part of the diverter plate 5 inside the diverter frame 3 is the lower channel in the diverter frame 3;

[0039] The L-shaped fixing plate 6 fixes one end of the torsion spring 7, and the other end of the torsion spring 7 is connected to the rotating column 4. When the diverter plate 5 rotates, the torsion spring 7 deforms to store elastic potential energy. After the external force disappears, it can drive the rotating column 4 and the diverter plate 5 to reset, ensuring that the diversion structure remains closed in the non-working state to prevent wax leakage.

[0040] In this embodiment, by setting up structures such as an operating table 1, a protective box 2, a diversion frame 3, a rotating column 4, a diversion plate 5, an L-shaped fixed plate 6, and a torsion spring 7, flexible control of the wax diversion is achieved. The diversion plate 5 can change its position under the drive of the rotating column 4, and can stably maintain the diversion ratio to ensure that the amount of wax entering the mold cavity 27 above the diversion plate 5 is greater than that below. The pressure difference is used to effectively prevent the ceramic core 29 from floating upward, solving the problem of position offset of the ceramic core 29. At the same time, the torsion spring 7 can drive the diversion plate 5 to reset when the wax material stops feeding, and cooperate with the lower limit bar 23 and the upper limit bar 24 to block the diversion frame 3 to avoid reverse overflow of the wax material, thereby ensuring the stability of the wax material in the mold cavity 27.

[0041] In the second embodiment, the end of the rotating column 4 away from the torsion spring 7 is fixedly connected to a quarter gear 8, and a rack 9 is meshed on the outer wall of the quarter gear 8. A lifting column 10 is welded to the outer wall of one side of the rack 9, and a blocking piston 11 is provided on the bottom outer wall of the lifting column 10. A diverter sleeve 12 is slidably connected to the outer wall of the blocking piston 11, and the bottom outer wall of the diverter sleeve 12 is fixedly connected to the wax inlet pipe 22 through a flange.

[0042] Through the above-described scheme, quarter gear 8 is fixedly connected to rotating column 4, and rack 9 meshes with quarter gear 8, achieving the conversion between linear and rotational motion. When the wax pushes the blocking piston 11, the lifting column 10 drives the rack 9 upward, and the rack 9 drives the quarter gear 8 to rotate 90 degrees. This, in turn, causes the rotating column 4 to drive the diverter plate 5 to complete the position switching, achieving automatic adjustment of the diversion ratio. The diverter sleeve 12 provides a sliding track for the blocking piston 11, ensuring its smooth movement. The wax inlet pipe 22 is connected to the diverter sleeve 12 via a flange, ensuring the sealing of the wax material delivery and allowing the wax material to enter the diverter structure stably.

[0043] In this embodiment, with the help of components such as the quarter gear 8, the rack 9, the lifting column 10, the blocking piston 11, the diverter sleeve 12, and the wax feed pipe 22, the linkage control of diversion and feeding is realized. When the wax enters the diverter sleeve 12, it pushes the blocking piston 11, and drives the rack 9 to move through the lifting column 10, thereby driving the quarter gear 8 to rotate, so that the diverter plate 5 automatically completes the switch from vertical to horizontal without the need for additional power control, which simplifies the operation process and ensures that the diversion process is carried out reliably.

[0044] In the third embodiment, the outer wall of one side of the diversion sleeve 12 is fixedly connected to the main flow pipe 13 through a flange, the outer wall of one end of the main flow pipe 13 is fixedly connected to the nozzle 14 through a flange, and the outer wall of one side of the nozzle 14 is fixedly connected to the outer shell 15 through a flange, an inner shell 17 is provided inside the outer shell 15, and a branch pipe 16 is welded between the inner shell 17 and the main flow pipe 13, a push plate 18 is slidably connected to the inner wall of the inner shell 17, and a connecting column 19 is welded at the center of the outer wall of one side of the push plate 18, a flow dynamic balancing plug 20 is welded to the outer wall of one end of the connecting column 19, a compensation spring 21 is fixedly connected between the push plate 18 and the inner shell 17, the branch pipe 16 is arranged on the inner wall of the outer shell 15, and the outer shell 15 is fixedly connected between the nozzle 14 and the diversion frame 3 through a flange.

[0045] Through the above scheme, the main pipe 13 transports the wax material in the diversion sleeve 12 to the nozzle 14, and the nozzle 14 is connected to the outer shell 15, so that the wax material enters the outer shell 15 and flows to the mold cavity 27. The branch pipe 16 introduces part of the wax material into the inner shell 17. The push plate 18 in the inner shell 17 moves under the action of the wax material pressure, and drives the flow dynamic balance plug 20 through the connecting column 19 to change the flow cross-sectional area at the nozzle 14 to achieve flow rate regulation. The compensation spring 21 pulls the push plate 18 to reset when the wax material pressure decreases, ensuring the flexible response of the flow dynamic balance plug 20. The outer shell 15 is fixed between the nozzle 14 and the diversion frame 3 through a flange to ensure the sealing and structural stability of the wax material delivery channel.

[0046] In this embodiment, the push plate 18, connecting column 19, flow dynamic balancing plug 20, compensation spring 21 and other designs realize the dynamic balance of the wax flow rate. When the wax flow rate is too fast, part of the wax enters the inner shell 17 through the branch pipe 16, pushing the push plate 18 to make the flow dynamic balancing plug 20 reduce the cross-sectional area at the nozzle 14 and reduce the flow rate. When the flow rate is too slow, the compensation spring 21 pulls the push plate 18 to reset, expand the cross-sectional area, avoid the wax directly impacting the ceramic core 29, effectively prevent it from cracking, and improve the accuracy of flow rate control.

[0047] The bottom inner wall of the diverter frame 3 is provided with a lower limiting strip 23 , and the top inner wall of the diverter frame 3 is provided with an upper limiting strip 24 . The diverter plate 5 is located between the lower limiting strip 23 and the upper limiting strip 24 .

[0048] Through the above solution, the lower limiting strip 23 at the bottom of the diverter frame 3 and the upper limiting strip 24 at the top limit the rotation range of the diverter plate 5, so that the diverter plate 5 can stably seal the diverter frame 3 when placed vertically.

[0049] A sliding sleeve 25 is welded to the outer wall of one side of the flow dynamic balancing plug 20 , and the sliding sleeve 25 is slidably connected to the outer wall of the inner shell 17 .

[0050] Through the above-mentioned solution, the sliding sleeve 25 on one side of the flow dynamic balancing plug 20 is slidably connected to the outer wall of the inner shell 17, providing a guide for the movement of the flow dynamic balancing plug 20, preventing it from shifting during the adjustment process, ensuring the accuracy of flow rate control, and ensuring that the wax material enters the mold cavity 27 at a stable flow rate.

[0051] The top outer wall of the operating table 1 is fixedly connected to the bottom membrane 26 by screws, and the outer wall of one end of the diversion frame 3 is fixedly connected to the inner wall of one side of the bottom membrane 26. A mold cavity 27 is opened on the top outer wall of the bottom membrane 26, and a ceramic core 29 is placed inside the mold cavity 27. An insertion rod 28 is provided on the outer wall of one end of the ceramic core 29, and the insertion rod 28 is inserted into the inner wall of the mold cavity 27.

[0052] Through the above-mentioned scheme, the bottom film 26 on the top of the operating table 1 provides a carrier for the mold cavity 27, and one end of the diversion frame 3 is connected to the bottom film 26, so that the diverted wax material can directly enter the mold cavity 27. The ceramic core 29 in the mold cavity 27 is inserted into the inner wall of the mold cavity 27 through the insertion rod 28 to achieve the initial fixation of the ceramic core 29. Combined with the pressure difference generated by the diversion of the wax material, it is further ensured that the ceramic core 29 does not shift in position during the injection process.

[0053] The operating table 1 and the protective box 2 are fixedly connected by symmetrically distributed reinforcing ribs 30 via screws, and an angle code 31 is welded on the outer wall of the diverter sleeve 12. The outer wall of one side of the angle code 31 is fixedly connected to the inner wall of the protective box 2 via screws.

[0054] Through the above solution, the reinforcement ribs 30 between the operating table 1 and the protective box 2 strengthen the connection between them, preventing relative displacement caused by vibration during operation. The angle brackets 31 on the diverter sleeve 12 secure it to the inner wall of the protective box 2, ensuring its stability and preventing vibration during wax flow that affects diverter accuracy.

[0055] The top outer wall of the operating table 1 is fixedly connected to a gantry 32 by screws, and the center of the top outer wall of the gantry 32 is fixedly connected to a hydraulic push rod 33 by screws. The piston rod of the hydraulic push rod 33 is fixedly connected to a top mold 34, and the top mold 34 is located directly above the bottom film 26.

[0056] Through the above solution, the gantry 32 on top of the operating table 1 provides mounting support for the hydraulic push rod 33. The piston rod of the hydraulic push rod 33 is connected to the top mold 34, which can drive the top mold 34 to move up and down, thereby closing and separating the top mold 34 from the bottom mold 26. The top mold 34 is located directly above the bottom mold 26, ensuring that it can accurately cover the mold cavity 27 when closed, thereby ensuring the molding accuracy of the wax model.

[0057] The outer wall of the top of the top die 34 is fixedly connected with symmetrically distributed guide rods 35, and the outer wall of the top of the gantry 32 is penetrated and installed with linear bearings on both sides of the hydraulic push rod 33. The guide rods 35 are slidingly connected to the inner wall of the linear bearings. The outer wall of the top of the operation table 1 is provided with positioning pipes 36 on both sides of the bottom film 26, and the outer wall of the top of the top die 34 is provided with positioning columns 37 on both sides. The positioning pipes 36 and the positioning columns 37 correspond to each other one by one.

[0058] Through the above scheme, the guide rods 35 at the top of the top die 34 are slidingly connected to the linear bearings of the gantry 32, providing guidance for the up-and-down movement of the top die 34, preventing the top die 34 from tilting during movement, and ensuring the alignment accuracy when the top die 34 is closed with the bottom film 26. The positioning pipes 36 and the positioning columns 37 correspond to each other one by one, and play a positioning role when the top die 34 is closed with the bottom film 26, further improving the closing accuracy.

[0059] The corner of the outer wall of the top of the operation table 1 is provided with a sub-control switch 38, and the outer wall of one side of the gantry 32 is welded with a support plate 39. The top outer wall of the support plate 39 is fixedly connected with a PLC controller 40 through screws. The PLC controller 40 is connected with the sub-control switch 38 and the hydraulic push rod 33 through signal lines.

[0060] Through the above scheme, the sub-control switch 38 on the operation table 1 can manually control the operation of the device, the support plate 39 on the gantry 32 is used to fix the PLC controller 40, the PLC controller 40 is connected with the sub-control switch 38 and the hydraulic push rod 33 through signal lines, realizing the automatic control of the device, improving the operation convenience and production efficiency, and ensuring that each process is accurately performed according to the preset program.

[0061] Working principle: first, insert the plug rod 28 on the ceramic core 29 into the mold cavity 27 to complete the preliminary positioning and placement of the ceramic core 29, operate the sub-control switch 38, start the hydraulic push rod 33 through the PLC controller 40, the piston rod of the hydraulic push rod 33 pushes the top die 34 to move downward, the guide rod 35 slides along the linear bearing on the gantry 32, the positioning pipe 36 is aligned with the positioning column 37, and the top die 34 is accurately closed with the bottom film 26;

[0062] Afterwards, the wax tube 22 starts to fill with wax, the wax enters the flow sleeve 12 and pushes the blocking piston 11 upwards, the blocking piston 11 drives the lifting column 10 to rise, the rack 9 moves upwards synchronously, the rack 9 meshes with the quarter gear 8, drives the quarter gear 8 to rotate 90°, and then drives the rotating column 4 to rotate, so that the flow plate 5 in the flow frame 3 changes from vertical placement to horizontal placement, at this time, the flow plate 5 is located between the lower limiting strip 23 and the upper limiting strip 24, the cross-sectional area ratio of the upper passage to the lower passage is 3:2, which ensures that the amount of wax entering the mold cavity 27 above the flow plate 5 is greater than that below, and prevents the ceramic core 29 from floating upwards under the action of pressure difference;

[0063] At the same time, the wax enters the main flow tube 13 through the flow sleeve 12, most of the wax enters the outer shell 15 through the nozzle 14, and then flows to the mold cavity 27, part of the wax enters the inner shell 17 through the branch flow tube 16, drives the push disc 18 to compress the compensation spring 21, the push disc 18 drives the flow dynamic balance plug 20 to move towards the nozzle 14 through the connecting column 19, the sliding sleeve 25 slides along the outer wall of the inner shell 17 for guidance, reduces the flow passage cross-sectional area at the nozzle 14, reduces the wax flow rate, avoids impacting the ceramic core 29, if the wax flow rate slows down, the compensation spring 21 resets to pull the push disc 18, so that the flow dynamic balance plug 20 moves in the opposite direction, expands the flow passage cross-sectional area, and ensures dynamic balance of the flow rate;

[0064] After the wax stops feeding, the blocking piston 11 loses the upward thrust, the torsional spring 7 between the L-shaped fixed plate 6 and the rotating column 4 releases the elastic potential energy, drives the rotating column 4 to rotate in the opposite direction, resets the flow plate 5 to vertical placement, blocks the flow frame 3, and prevents the wax in the mold cavity 27 from flowing in the opposite direction;

[0065] Finally, the PLC controller 40 controls the hydraulic push rod 33 to drive the top die 34 to rise, completes the separation of the top die 34 and the bottom film 26, and the formed wax mold can be taken out. The whole process realizes stable positioning of the ceramic core 29 and safe injection of the wax through mechanical structure linkage and dynamic adjustment.

[0066] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An injection diversion structure for a hollow blade mold, comprising an operating table (1), characterized in that: A protective box (2) is provided on the outer wall of one side of the operating table (1), and a diversion frame (3) is installed through the inner wall of one side of the protective box (2), a rotating column (4) is passed through the inner wall of the diversion frame (3) and is rotatably connected, and a diversion plate (5) is welded on the outer wall of the rotating column (4), an L-shaped fixed plate (6) is welded on the outer wall of one side of the operating table (1), and a torsion spring (7) is fixedly connected between the L-shaped fixed plate (6) and the rotating column (4); One end of the rotating column (4) away from the torsion spring (7) is fixedly connected to a quarter gear (8), and a rack (9) is meshed on the outer wall of the quarter gear (8), a lifting column (10) is welded to the outer wall of one side of the rack (9), and a blocking piston (11) is provided on the bottom outer wall of the lifting column (10), a diverter sleeve (12) is slidably connected to the outer wall of the blocking piston (11), and the bottom outer wall of the diverter sleeve (12) is fixedly connected to a wax inlet pipe (22) via a flange; The outer wall of one side of the diversion sleeve (12) is fixedly connected to the main flow pipe (13) through a flange, the outer wall of one end of the main flow pipe (13) is fixedly connected to the nozzle (14) through a flange, and the outer wall of one side of the nozzle (14) is fixedly connected to the outer shell (15) through a flange, an inner shell (17) is provided inside the outer shell (15), and a branch pipe (16) is welded between the inner shell (17) and the main flow pipe (13), a push plate (18) is slidably connected to the inner wall of the inner shell (17), and a connecting column (19) is welded at the center of the outer wall of one side of the push plate (18), a flow dynamic balancing plug (20) is welded to the outer wall of one end of the connecting column (19), and a compensation spring (21) is fixedly connected between the push plate (18) and the inner shell (17).

2. The injection diversion structure of a hollow blade mold according to claim 1, characterized in that: The branch pipe (16) is arranged to penetrate the inner wall of the outer shell (15), and the outer shell (15) is fixedly connected between the nozzle (14) and the diversion frame (3) through a flange.

3. The injection diversion structure of a hollow blade mold according to claim 1, characterized in that: The bottom inner wall of the diverter frame (3) is provided with a lower limiting strip (23), and the top inner wall of the diverter frame (3) is provided with an upper limiting strip (24), and the diverter plate (5) is located between the lower limiting strip (23) and the upper limiting strip (24).

4. The injection diversion structure of a hollow blade mold according to claim 1, characterized in that: A sliding sleeve (25) is welded to the outer wall of one side of the flow dynamic balancing plug (20), and the sliding sleeve (25) is slidably connected to the outer wall of the inner shell (17).

5. The injection diversion structure of a hollow blade mold according to claim 1, characterized in that: The top outer wall of the operating table (1) is fixedly connected to the bottom membrane (26) by screws, and the outer wall of one end of the diversion frame (3) is fixedly connected to the inner wall of one side of the bottom membrane (26). The top outer wall of the bottom membrane (26) is provided with a mold cavity (27), and a ceramic core (29) is placed inside the mold cavity (27). The outer wall of one end of the ceramic core (29) is provided with an insertion rod (28), and the insertion rod (28) is inserted into the inner wall of the mold cavity (27).

6. The injection diversion structure of a hollow blade mold according to claim 1, characterized in that: Symmetrically distributed reinforcing ribs (30) are fixedly connected between the operating table (1) and the protective box (2) by screws, and an angle bracket (31) is welded on the outer wall of the diversion sleeve (12), and the outer wall of one side of the angle bracket (31) is fixedly connected to the inner wall of the protective box (2) by screws.

7. The injection diversion structure of a hollow blade mold according to claim 5, characterized in that: The top outer wall of the operating table (1) is fixedly connected to a gantry (32) by screws, and the center of the top outer wall of the gantry (32) is fixedly connected to a hydraulic push rod (33) by screws, and the piston rod of the hydraulic push rod (33) is fixedly connected to a top mold (34), and the top mold (34) is located directly above the bottom film (26).

8. The injection diversion structure of a hollow blade mold according to claim 7, characterized in that: The top outer wall of the top mold (34) is fixedly connected to symmetrically distributed guide rods (35), and the top outer wall of the gantry (32) is located on both sides of the hydraulic push rod (33) and is penetrated by linear bearings, and the guide rods (35) are slidably connected to the inner walls of the linear bearings.

9. The injection diversion structure of a hollow blade mold according to claim 1, characterized in that: Positioning tubes (36) are provided on both sides of the outer wall of the top of the operating table (1) and the outer walls on both sides of the bottom film (26), and positioning columns (37) are provided on both sides of the outer wall of the top mold (34), and the positioning tubes (36) and the positioning columns (37) correspond to each other one by one.

10. The injection diversion structure of a hollow blade mold according to claim 7, characterized in that: A sub-control switch (38) is provided at a corner of the top outer wall of the operating table (1), and a support plate (39) is welded to the outer wall of one side of the gantry (32). A PLC controller (40) is fixedly connected to the top outer wall of the support plate (39) by screws. The PLC controller (40) is connected to the sub-control switch (38) and the hydraulic push rod (33) by signal lines.

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