Detachable efficient forming die assembly for steam turbine inner cylinder air inlet

Abstract

The utility model belongs to the technical field of steam turbine inner cylinders, and particularly relates to a detachable steam turbine inner cylinder air inlet efficient forming die assembly which comprises an upper die base and a lower die assembly, and a forming disc is fixed to the middle of the bottom of the upper die base. The lower die assembly comprises two lower die bases which are arranged oppositely, mounting cavities are formed in the tops of the lower die bases, die cores are detachably mounted in the mounting cavities through bolts, and die cavities are formed in the tops of the die cores. According to the detachable efficient forming mold assembly for the steam turbine inner cylinder air inlet, the whole mold is formed by the upper mold base and the lower mold assembly, the lower mold assembly is formed by combining the two lower mold bases, when a release agent is sprayed, the upper mold base and the lower mold assembly are separated, the two lower mold bases are relatively separated, and a mold cavity and a mold core are completely exposed; and a release agent can be sprayed to the interior of the mold cavity from shallow to deep, and a release agent spray head can penetrate into the interior of the mold cavity more conveniently, so that the mold cavity can be sprayed more comprehensively and uniformly.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine inner cylinder technology, and in particular to a detachable high-efficiency forming mold assembly for the air inlet of a steam turbine inner cylinder. Background Technology

[0002] As a key component of the turbine unit, the turbine inner cylinder air inlet is currently generally formed using an integral mold assembly in the industry. The complex flow channel is formed in one step through mold cavity injection molding or die casting processes.

[0003] Traditional mold components require the surface of the mold cavity to be sprayed with a release agent before molding to prevent the molding material from sticking to the mold. However, the mold cavity of traditional mold components is relatively closed, which makes it difficult for the spraying equipment to evenly and comprehensively spray the release agent to all corners of the mold cavity. This easily creates spraying blind spots and areas where the release agent is insufficient or unevenly distributed. The adhesion between the product and the mold will be significantly enhanced, thus increasing the difficulty and time required for demolding. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide a detachable high-efficiency forming mold assembly for the inlet of the inner cylinder of a steam turbine, so as to solve the technical problem that the mold cavity of the current mold assembly is relatively closed, which makes it difficult for the spraying equipment to evenly and comprehensively spray the release agent to all corners of the mold cavity, and easily forms a spraying blind area.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A detachable high-efficiency forming mold assembly for the air inlet of a steam turbine inner cylinder includes an upper mold base and a lower mold assembly. A forming plate is fixed in the middle of the bottom of the upper mold base, and injection ports are opened on the top of the upper mold base and on both sides of the forming plate.

[0008] The lower mold assembly includes two lower mold bases arranged in a relative position. The top of the lower mold bases has an installation cavity. A mold core is detachably installed inside the installation cavity by bolts. The top of the mold core has a mold cavity.

[0009] The bottom of the lower mold base is fixed with an ejector assembly, and the top of the movable end of the ejector assembly is fixed with an ejector rod. The bottom of both the lower mold base and the mold core are provided with unloading holes for the ejector rod to pass through. The ejector rod passes through the unloading hole and enters the interior of the mold cavity. Side protrusions are welded to both sides of the front end face and the rear end face of the injection port. A drive rod for driving the ejector assembly is fixed to the bottom of the side protrusions.

[0010] As an improved technical solution, a positioning rod is fixed at each of the four corners of the bottom of the upper mold base, and a positioning hole is provided at each of the two outer corners of the top of the lower mold base to engage with the positioning rod.

[0011] As an improved technical solution, each of the four corner ends of one side of the lower mold base is fixed with a positioning rod 2, and each of the four corner ends of the other lower mold base near the positioning rod 2 is provided with a positioning hole 2 that engages with the positioning rod 2.

[0012] As an improved technical solution, the four sides of the mold core away from the ejector rod are integrally formed to form a fixed protrusion, and the top of the protrusion is provided with a fixing hole for the bolt to pass through. The interior of the mounting cavity is provided with a mounting platform to block the protrusion, and a threaded hole for threaded connection with the bolt is provided on the mounting platform directly below the fixing hole.

[0013] As an improved technical solution, the ejector assembly includes two light rods fixed to the bottom of the lower mold base. A baffle is coaxially fixed to one end of the light rod away from the lower mold base. A crossbeam is slidably installed between the two light rods. A spring is sleeved on the light rod between the opposing surfaces of the baffle and the crossbeam.

[0014] As an improved technical solution, sliding holes are provided on both sides of the top of the crossbeam, and the crossbeam is slidably connected to the smooth rod through the sliding holes.

[0015] As an improved technical solution, the bottom ends of the two drive rods on the same side are directly above the ends of the corresponding side crossbeams.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are:

[0017] 1. In this utility model, the entire mold is formed by an upper mold base and a lower mold assembly, and the lower mold assembly is formed by the merging of two lower mold bases. When spraying the release agent, the upper mold base and the lower mold assembly are separated, and the two lower mold bases are relatively separated, completely exposing the mold cavity and the mold core. This changes the traditional closed mold cavity setting, which is more conducive to spraying the release agent into the mold cavity from shallow to deep. It is also more conducive to the release agent nozzle penetrating into the mold cavity, so as to spray the mold cavity more comprehensively and evenly, reducing the difficulty and time of subsequent demolding, and improving molding efficiency.

[0018] 2. In this utility model, when the upper mold base is descending, the driving rod will first press down on the top of the crossbeam and move it downward. The top of the ejector rod is in the same plane as the bottom of the mold cavity. When the air inlet is formed and demolded, the upper mold base is separated from the lower mold assembly, the driving rod releases the downward pressure on the crossbeam, and under the elastic reset action of the spring, the ejector rod enters the interior of the mold cavity in the direction of the upper mold base, thereby lifting the air inlet formed inside the mold cavity upward, so that the inlet and outlet protrude upward from the interior of the mold cavity, which is more conducive to the unloading operation of the formed air inlet from the interior of the mold cavity. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of a detachable high-efficiency forming mold assembly for the air inlet of a steam turbine inner cylinder according to this utility model.

[0021] Figure 2 This is a schematic diagram of the upper mold base of a detachable high-efficiency forming mold assembly for the air inlet of a steam turbine inner cylinder according to this utility model.

[0022] Figure 3 This is a schematic diagram of the separated state structure of the lower mold assembly of a detachable high-efficiency forming mold assembly for the air inlet of a steam turbine inner cylinder according to this utility model.

[0023] Figure 4 This is a three-dimensional structural diagram of the lower mold base of a detachable high-efficiency forming mold assembly for the air inlet of a steam turbine inner cylinder according to this utility model.

[0024] Figure 5 This is a top view of the lower mold base of a detachable high-efficiency forming mold assembly for the air inlet of a steam turbine inner cylinder, according to this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Upper mold base; 11. Injection port; 12. Side protrusion; 13. Positioning rod one; 14. Drive rod; 15. Forming plate; 2. Lower mold assembly; 21. Lower mold base; 22. Positioning rod two; 23. Positioning hole one; 24. Mounting cavity; 25. Fixing hole; 26. Mold core; 27. Mold cavity; 28. Unloading hole; 3. Ejector assembly; 31. Smooth rod; 32. Baffle plate; 33. Spring; 34. Crossbeam; 4. Ejector rod. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0030] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] like Figures 1 to 5 As shown in the figure, this embodiment provides a detachable high-efficiency forming mold assembly for the inlet of the steam turbine inner cylinder. This detachable high-efficiency forming mold assembly for the inlet of the steam turbine inner cylinder includes an upper mold base 1 and a lower mold assembly 2. A forming plate 15 is fixed in the middle of the bottom of the upper mold base 1, and injection ports 11 are opened on the top of the upper mold base 1 and on both sides of the forming plate 15.

[0032] The lower mold assembly 2 includes two lower mold bases 21 arranged in a relative state. The top of the lower mold base 21 is provided with a mounting cavity 24. The mold core 26 is detachably installed inside the mounting cavity 24 by bolts. The top of the mold core 26 is provided with a mold cavity 27. When the two mold cores 26 are combined, an air inlet molding cavity is formed between the two mold cores 26 and the molding disc 15.

[0033] The bottom of the lower mold base 21 is fixed with an ejector assembly 3, and the top of the movable end of the ejector assembly 3 is fixed with an ejector rod 4. The bottom of both the lower mold base 21 and the mold core 26 are provided with a discharge hole 28 for the ejector rod 4 to pass through. At the same time, the ejector rod 4 passes through the discharge hole 28 and enters the interior of the mold cavity 27. Side protrusions 12 are welded on both sides of the front end face and the rear end face of the injection port 11. The bottom of the side protrusions 12 is fixed with a driving rod 14 for driving the ejector assembly 3.

[0034] The entire mold is formed by an upper mold base 1 and a lower mold assembly 2. The lower mold assembly 2 is formed by the combination of two lower mold bases 21. When spraying the release agent, the upper mold base 1 and the lower mold assembly 2 are separated, and the two lower mold bases 21 are relatively separated, completely exposing the mold cavity and the mold core. This changes the traditional closed mold cavity setting, which is more conducive to spraying the release agent into the mold cavity from shallow to deep. It is also more conducive to the release agent nozzle penetrating into the mold cavity, so as to spray the mold cavity more comprehensively and evenly, reducing the difficulty and time of subsequent demolding, and improving molding efficiency.

[0035] like Figures 1 to 4 As shown in the figure, in this embodiment, positioning rods 13 are fixed at the four corners of the bottom of the upper mold base 1, and positioning holes 23 are opened at the two outer corners of the top of the lower mold base 21 to engage with the positioning rods 13. The positioning rods 13 will first enter the interior of the positioning holes 23 to engage, so as to make the upper mold base 1 and the lower mold assembly 2 accurately positioned.

[0036] like Figures 3 to 4 As shown in the figure, in this embodiment, each of the four corners of one side of the lower mold base 21 is fixed with a positioning rod 22, and each of the four corners of the other lower mold base 21 near the positioning rod 22 is provided with a positioning hole 2 that engages with the positioning rod 22. The positioning rod 22 enters the interior of the positioning hole 2 for positioning and engagement, ensuring the accuracy of the two mold cores 26 merging and aligning, which helps to avoid misalignment.

[0037] like Figure 4 As shown, in this embodiment, the four sides of the mold core 26 away from the ejector rod 4 are integrally formed with a fixed protrusion, and the top of the protrusion is provided with a fixing hole 25 for the bolt to pass through. The interior of the mounting cavity 24 is provided with a mounting platform to block the protrusion, and a threaded hole for threaded connection with the bolt is provided on the mounting platform directly below the fixing hole 25. The mold core 26 is threadedly connected to the threaded hole on the mounting platform by the bolt passing through the fixing hole 25, so that the mold core 26 can be detachably installed on the mounting cavity 24, which facilitates the subsequent disassembly and maintenance of the mold core 26.

[0038] like Figure 4As shown, in this embodiment, the ejector assembly 3 includes two guide rods 31 fixed to the bottom of the lower mold base 21. A baffle 32 is coaxially fixed to one end of the guide rod 31 away from the lower mold base 21. A crossbeam 34 is slidably installed between the two guide rods 31, and the ejector rod 4 is fixed to the middle of the top of the crossbeam 34. A spring 33 is sleeved on the guide rod 31 between the baffle 32 and the opposite face of the crossbeam 34. When the upper mold base 1 descends, the drive rod 14 will first press down on the top of the crossbeam 34 to move it downwards, thus ejecting the material. The top of rod 4 is on the same plane as the bottom of the cavity 27. When the air inlet is formed and demolded, the upper mold base 1 is separated from the lower mold assembly 2, and the driving rod 14 releases the pressure on the crossbeam 34. Under the elastic reset action of the spring 33, the ejector rod 4 enters the cavity 27 towards the upper mold base 1, thereby lifting the air inlet formed inside the cavity 27 upward, so that the inlet and outlet protrude upward from the inside of the cavity 27, which is more conducive to unloading the formed air inlet from the inside of the cavity 27.

[0039] like Figure 4 As shown, in this embodiment, sliding holes are provided on both sides of the top of the crossbeam 34, and the crossbeam 34 is slidably connected to the smooth rod 31 through the sliding holes.

[0040] like Figures 1 to 5 As shown in the figure, in this embodiment, the bottom ends of the two drive rods 14 on the same side are directly above the two ends of the corresponding side crossbeam strips 34.

[0041] During use, during molding, the two lower mold bases 21 are joined together. Then, the upper mold base 1 moves downward and joins the top of the lower mold base 21, so that the molding disc 15 accurately enters the interior of the two mold cavities 27. When the molding disc 15 enters the interior of the two mold cavities 27, the three form an air inlet molding cavity. The raw material is injected into the molding cavity through the injection port 11 and waits for the air inlet to cool and form.

[0042] When the upper mold base 1 descends, the drive rod 14 first presses down on the top of the crossbeam 34 and compresses the spring 33. When the upper mold base 1 is closed on the lower mold assembly 2, the drive rod 14 can no longer drive the crossbeam 34 to move downward. At this time, the top of the ejector rod 4 is in the same plane as the bottom of the cavity 27. When the air inlet is formed and demolded, the upper mold base 1 is separated from the lower mold assembly 2, the drive rod 14 releases the pressure on the crossbeam 34, and under the elastic reset action of the spring 33, the ejector rod 4 enters the cavity 27 towards the upper mold base 1, thereby lifting the air inlet formed inside the cavity 27 upward, so that the inlet and outlet protrude upward from the inside of the cavity 27.

[0043] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A detachable high-efficiency forming mold assembly for the air inlet of a steam turbine inner cylinder, characterized in that: Including upper die seat (1) and lower die assembly (2), the middle part of the bottom of the upper die seat (1) is fixed with a forming disc (15), and the top of the upper die seat (1) is provided with a material injection opening (11) on both sides of the forming disc (15); The lower die assembly (2) includes two lower die seats (21) arranged in opposite states, the top of the lower die seat (21) is provided with a mounting cavity (24), and the inside of the mounting cavity (24) is detachably mounted with a mold core (26) through bolts, and the top of the mold core (26) is provided with a mold cavity (27); The bottom of the lower die seat (21) is fixed with a material pushing assembly (3), the top of the movable end of the material pushing assembly (3) is fixed with a material pushing rod (4), and the bottom of the lower die seat (21) and the mold core (26) are both provided with a discharging hole (28) for the material pushing rod (4) to pass through, and the material pushing rod (4) passes through the discharging hole (28) and enters the inside of the mold cavity (27), the front end face and the rear end face of the material injection opening (11) are both welded with a side protruding block (12), and the bottom of the side protruding block (12) is fixed with a driving long rod (14) for driving the material pushing assembly (3).

2. A high efficiency removable die assembly for forming a gas turbine inner casing inlet port according to claim 1, wherein: The bottom of the upper die seat (1) is fixed with a positioning rod one (13) at each corner, and the outside of the top of the lower die seat (21) is provided with a positioning hole one (23) at both corner ends.

3. A high efficiency removable die assembly for forming a gas turbine inner casing inlet port according to claim 2, wherein: The side of one of the lower die seats (21) is fixed with a positioning rod two (22) at each corner end, and the side close to the positioning rod two (22) of the other lower die seat (21) is provided with a positioning hole two (23) at each corner end.

4. The high-efficiency mold assembly for forming a removable inner casing inlet of a steam turbine according to claim 3, wherein: The far end of the mold core (26) away from the material pushing rod (4) is integrally formed with a fixed protruding edge at four edges, and the top of the protruding edge is provided with a fixing hole (25) for the bolt to pass through, and the inside of the mounting cavity (24) is provided with a hanging table for blocking the protruding edge, and the hanging table is provided with a threaded hole for threadedly connecting with the bolt below the fixing hole (25).

5. A high efficiency removable die assembly for forming a gas turbine inner casing inlet port according to claim 4, wherein: The material pushing assembly (3) includes two light rods (31) fixed at the bottom of the lower die seat (21), the end of the light rod (31) away from the lower die seat (21) is coaxially fixed with a baffle (32), and a cross beam (34) is slidably installed between the two light rods (31), and the light rod (31) is sleeved with a spring (33) between the opposite surfaces of the baffle (32) and the cross beam (34).

6. A high efficiency removable die assembly for forming a gas turbine inner casing inlet port according to claim 5, wherein: The top of the cross beam (34) is provided with a sliding hole at both sides, and the cross beam (34) is slidably connected with the light rod (31) through the sliding hole.

7. A high efficiency removable die assembly for forming a gas turbine inner casing inlet port according to claim 6, wherein: The bottom ends of the two driving long rods (14) on the same side are directly above the corresponding cross beam (34) at both ends.

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