A mechanism and method for flipping large nozzle core molds of different sizes

Abstract

This invention discloses a mechanism and method for flipping large nozzle core molds of different sizes, comprising a first placement frame, a second placement frame, and a third placement frame arranged sequentially at intervals on the ground, the distance between the second and third placement frames being adjustable; the first placement frame is used to place a vertically arranged core mold with a mandrel, and the second and third placement frames are used to place a horizontally arranged core mold with a mandrel; when placed horizontally, the larger end of the core mold is adjacent to the second placement frame; when placed vertically, the larger end of the core mold is adjacent to the first placement frame; rotating lifting rings are detachably connected to both ends of the mandrel, and a chain is fixed on the first placement frame, the other end of which is connected to the rotating lifting ring on the mandrel on one side of the larger end of the core mold. This invention enables safe and rapid flipping of the core mold, while also meeting the needs of core mold size changes.

Description

Technical Field

[0001] This invention relates to the field of large-size nozzle and diffuser section forming and processing technology, specifically to a core mold flipping mechanism and method for large nozzles of different sizes. Background Technology

[0002] The equipment structures for different processes such as large-size nozzles, diffuser winding, curing, and machining differ, and the core molds may be in different horizontal or vertical positions, requiring the core molds to be flipped.

[0003] The process of forming the diffuser section or integrated nozzle requires multiple core mold flipping. For example, after the winding process is completed, the core mold needs to be changed from a horizontal state to a vertical state for the curing process. After curing is completed, the core mold needs to be changed from a vertical state to a horizontal state for the machining process. The integrated nozzle involves the composite shell layup process, which requires multiple core mold flipping.

[0004] During the development process, the state of the core mold changes frequently, and the core mold size varies for different product models. Conventional core mold flipping mechanisms cannot meet the core mold flipping requirements after the core mold size changes. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a core mold flipping mechanism and method suitable for large nozzles of different sizes. Through the design and use of the core mold flipping mechanism, the present invention achieves safe and rapid core mold flipping while also meeting the needs of core mold size changes.

[0006] A large nozzle core mold flipping mechanism suitable for different sizes includes a first placement frame, a second placement frame, and a third placement frame arranged sequentially at intervals on the ground, the distance between the second and third placement frames being adjustable; the first placement frame is used to place a vertically arranged core mold with a mandrel, and the second and third placement frames are used to place a horizontally arranged core mold with a mandrel; when placed horizontally, the larger end of the core mold is adjacent to the second placement frame; when placed vertically, the larger end of the core mold is adjacent to the first placement frame; rotating lifting rings are detachably connected to both ends of the mandrel, and a chain is fixed on the first placement frame, the other end of the chain being connected to the rotating lifting ring on the mandrel on one side of the larger end of the core mold.

[0007] Preferably, the first placement frame includes a first base plate and a support base. The first base plate is fixed to the ground by anchor bolts, and the support base is fixed to the top surface of the first base plate. The upper part of the support base is provided with a U-shaped groove to accommodate the outer end of the mandrel. The top surfaces of the support base on both sides of the U-shaped groove are in contact with the bottom surface of the large end of the mandrel.

[0008] Preferably, a plurality of stiffening ribs are provided between the first base plate and the support base.

[0009] Preferably, the second placement frame includes a second base plate and a first support rod. The second base plate is fixed to the ground by anchor bolts, and the first support rod is erected on the top surface of the second base plate. The top end of the first support rod is provided with a first arc-shaped groove for placing the mandrel.

[0010] Preferably, the first support rod is provided with first diagonal braces on both sides for connecting the second base plate and the first support rod.

[0011] Preferably, the third placement frame includes a third base plate and a second support rod. The bottom of the third base plate is provided with a sliding groove, which slides in cooperation with a guide rail on the ground. The length direction of the guide rail is consistent with the direction of the line connecting the second placement frame and the third placement frame. The second support rod is erected on the top surface of the third base plate, and the top of the second support rod is provided with a second arc-shaped groove for placing the mandrel.

[0012] Preferably, the guide rail is provided with a plurality of threaded holes at intervals, and the third base plate is provided with corresponding through holes. The third base plate and the guide rail are fixed together by bolts, through holes and threaded holes.

[0013] Preferably, the second support rod is provided with second diagonal braces on both sides for connecting the third base plate and the second support rod.

[0014] Preferably, the first, second, and third placement racks are arranged in a straight line.

[0015] A method for flipping large nozzle core molds of different sizes, which uses the large nozzle core mold flipping mechanism for different sizes as described above, includes the following steps:

[0016] Horizontal to vertical:

[0017] The core mold is horizontally hoisted and placed on the second and third placement frames. The mandrel at the large end of the core mold is connected to the first placement frame via a rotating lifting ring and a chain. The core mold is then horizontally hoisted and moved toward the third placement frame, keeping the chain taut. The horizontal hoisting is then disassembled, and the rotating lifting ring on the mandrel at the small end of the core mold is removed. The core mold is lifted and simultaneously moved toward the first placement frame until it is vertical. The core mold is then slowly lowered until the large end face of the core mold contacts the top surface of the first placement frame. After it is stabilized, the chain and rotating lifting ring are removed, thus changing the core mold from a horizontal to a vertical state.

[0018] Vertical to horizontal:

[0019] A rotating lifting ring is installed on the mandrel at the small end of the mandrel. The mandrel is then placed on the first placement frame and stabilized. The rotating lifting ring and chain are then installed on the mandrel at the large end of the mandrel. The mandrel is lifted upwards until the chain at the large end of the mandrel is taut. Then, the hoist is moved towards the third placement frame while the mandrel is lowered until the mandrel contacts the second and third placement frames. The mandrel is then lifted horizontally and moved towards the first placement frame to loosen the chain at the large end of the mandrel. The mandrel chain and rotating lifting ring are then removed, thus changing the mandrel from a vertical to a horizontal state.

[0020] The present invention has the following advantages and beneficial effects:

[0021] The flipping mechanism of this invention has a simple structure and is easy to operate. Only one operator is needed to achieve safe and rapid flipping of the core mold between vertical and horizontal states, which greatly reduces the labor intensity of the workers and improves work efficiency.

[0022] The present invention, through its adjustable design between the second and third placement racks, can be flexibly adjusted according to different models and sizes of core molds, thus having a wide range of applications. Attached Figure Description

[0023] Figure 1 This is a front view of the overall assembly of the core mold flipping mechanism (with the core mold).

[0024] Figure 2 This is a side view of the first placement rack (with a core mold).

[0025] Figure 3 This is a side view of the second placement rack.

[0026] Figure 4 This is a side view of the third placement rack.

[0027] Figure 5 This is a schematic diagram of the side structure of the guide rail.

[0028] Figure 6 This is a top view of the guide rail structure.

[0029] In the diagram: 1. First placement frame; 11. First base plate; 12. Support seat; 13. U-shaped groove; 14. Stiffening rib; 2. Second placement frame; 21. Second base plate; 22. First support rod; 23. First arc-shaped groove; 24. First diagonal brace; 3. Third placement frame; 31. Third base plate; 32. Second support rod; 33. Second diagonal brace; 34. Slide groove; 35. Second arc-shaped groove; 4. Chain; 5. Rotating lifting ring; 6. Guide rail; 61. Threaded hole; 7. Mandrel; 8. Mandrel mold; 81. Large end of mandrel mold; 82. Small end of mandrel mold. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of the present invention, preferred embodiments of the present invention are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting the present patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting the present patent.

[0031] The present invention will now be described in further detail with reference to the accompanying drawings, illustrating a large nozzle core mold flipping mechanism and flipping method applicable to different sizes.

[0032] like Figure 1 As shown, a large nozzle core mold flipping mechanism suitable for different sizes includes a first placement frame 1, a second placement frame 2, and a third placement frame 3 arranged sequentially at intervals on the ground, with the distance between the second placement frame 2 and the third placement frame 3 being adjustable. The first placement frame 1 is used to place a vertically arranged core mold 8 with a mandrel 7, while the second and third placement frames 2 and 3 are used to place a horizontally arranged core mold 8 with a mandrel 7. When placed horizontally, the large end 81 of the core mold is adjacent to the second placement frame 2; when placed vertically, the large end 81 of the core mold is adjacent to the first placement frame 1. Rotating lifting rings 5 ​​are detachably connected to both ends of the mandrel 7. A chain 4 is fixed on the first placement frame 1, and the other end of the chain 4 is connected to the rotating lifting ring 5 on the mandrel 7 on one side of the large end 81 of the core mold. The first placement frame 1, the second placement frame 2, and the third placement frame 3 are arranged on the same straight line.

[0033] like Figure 2 As shown, the first placement frame 1 includes a first base plate 11 and a support base 12. The first base plate 11 is fixed to the ground by anchor bolts, and the support base 12 is fixed to the top surface of the first base plate 11. The upper part of the support base 12 has a U-shaped groove to accommodate the outer end of the mandrel 7. The top surfaces of the support base 12 on both sides of the U-shaped groove are in contact with the bottom surface of the large end 81 of the mandrel. Multiple stiffening ribs 14 are provided between the first base plate 11 and the support base 12. The functions of the first placement frame 1 are: 1) to place the mandrel 8 in a vertical state, install the chain 4, and return the mandrel 8 to the starting state of transitioning from a vertical to a horizontal state; 2) to place the mandrel 8 after transitioning from a horizontal to a vertical state, remove the chain 4, and return the mandrel 8 to the final state of transitioning from a horizontal to a vertical state.

[0034] Two chains 4 of equal length are fixed to the first placement frame 1 and connected to the mandrel 7 on the mandrel 8 via rotating lifting rings 5, ensuring the relative stability of the mandrel 8 during its rotation. Three rotating lifting rings 5 ​​of the same specification are used; two are connected to the large end 81 of the mandrel, and one is connected to the small end 82 of the mandrel.

[0035] like Figure 3As shown, the second placement frame 2 includes a second base plate 21 and a first support rod 22. The second base plate 21 is fixed to the ground by anchor bolts. The first support rod 22 is erected on the top surface of the second base plate 21. The top end of the first support rod 22 is provided with a first arc-shaped groove 23 for placing the mandrel 7. First diagonal braces 24 for connecting the second base plate 21 and the first support rod 22 are symmetrically arranged on both sides of the first support rod 22.

[0036] In some examples, the second placement frame 2 may be designed to move vertically up and down, slowly moving down after the flipping begins, until the large-end chain and small-end sling are taut, and then moving down completely.

[0037] like Figure 4 and 5 As shown, the third placement frame 3 includes a third base plate 31 and a second support rod 32. The bottom of the third base plate 31 has a sliding groove 34 that slides with a guide rail 6 on the ground. The length direction of the guide rail 6 is aligned with the line connecting the second placement frame 2 and the third placement frame 3. The second support rod 32 is erected on the top surface of the third base plate 31, and its top end has a second arc-shaped groove 35 for placing the mandrel 7. Symmetrical second diagonal braces 33 are arranged on both sides of the second support rod 32 to connect the third base plate 31 and the second support rod 32. The third placement frame 3 can move horizontally along the guide rail 6. By adjusting the position of the third placement frame 3 according to the required length of the mandrel 8 to be flipped, different models and lengths of mandrel 8 can be flipped.

[0038] like Figure 6 As shown, the guide rail 6 is provided with multiple threaded holes 61 at intervals, and the third base plate 31 is provided with corresponding through holes. The third base plate 31 and the guide rail 6 are fixed together by bolts, through holes and threaded holes 61.

[0039] Based on the above structural design, this example provides a method for flipping large nozzle core molds of different sizes, which includes the following steps:

[0040] Horizontal to vertical:

[0041] The core mold 8 is horizontally hoisted and placed on the second placement frame 2 and the third placement frame 3. The mandrel 7 at the large end 81 of the core mold is connected to the first placement frame 1 through the rotating lifting ring 5 and the chain 4. The core mold 8 is horizontally hoisted and moved towards the third placement frame 3, so that the chain 4 is in a taut state. The horizontal hoisting is disassembled, and the rotating lifting ring 5 on the mandrel 7 at the small end 82 of the core mold is hoisted. The core mold 8 is lifted and moved towards the first placement frame 1 at the same time until the core mold 8 is in a vertical state. It is slowly lowered so that the end face of the large end 81 of the core mold contacts the top surface of the first placement frame 1. After it is placed stably, the chain 4 and the rotating lifting ring 5 are removed, so that the core mold 8 changes from a horizontal state to a vertical state.

[0042] Vertical to horizontal:

[0043] A rotating lifting ring 5 is installed on the mandrel 7 at the small end 82 of the mandrel. The mandrel 8 is then hoisted and placed on the first placement frame 1. After it is placed stably, the rotating lifting ring 5 and the chain 4 are installed on the mandrel 7 at the large end 81 of the mandrel. The mandrel 8 is hoisted upward until the chain 4 at the large end 81 of the mandrel is taut. Then, the hoist is moved towards the third placement frame 3 while the mandrel 8 is lowered until the mandrel 7 contacts the second placement frame 2 and the third placement frame 3. The mandrel 8 is then horizontally hoisted and moved towards the first placement frame 1, so that the chain 4 at the large end 81 of the mandrel is relaxed. The core chain 4 and the rotating lifting ring 5 are then removed, so that the mandrel 8 changes from a vertical state to a horizontal state.

[0044] Based on the description and accompanying drawings of this invention, those skilled in the art can easily manufacture or use the large nozzle core mold flipping mechanism and method applicable to different sizes, and can produce the positive effects described in this invention.

[0045] Unless otherwise specified, in this invention, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this invention are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0046] Unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" in this invention should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] The above description is merely a preferred embodiment of the present invention, but the present invention is not limited to the specific embodiments described above. Those skilled in the art can make various modifications, additions, or substitutes with similar methods without departing from the principles of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A mechanism for flipping large nozzle core molds of different sizes, characterized in that, The device includes a first placement rack (1), a second placement rack (2), and a third placement rack (3) arranged sequentially on the ground, with the distance between the second placement rack (2) and the third placement rack (3) being adjustable. The first placement rack (1) is used to place a vertically arranged core mold (8) with a mandrel (7), and the second placement rack (2) and the third placement rack (3) are used to place a horizontally arranged core mold (8) with a mandrel (7). When placed horizontally, the large end (81) of the core mold is arranged adjacent to the second placement rack (2); when placed vertically, the large end (81) of the core mold is arranged adjacent to the first placement rack (1). The mandrel (7) is detachably connected to rotating lifting rings (5) at both ends, and a chain (4) is fixed on the first placement rack (1). The other end of the chain (4) is connected to the rotating lifting ring (5) on the mandrel (7) on one side of the large end (81) of the core mold. The first placement frame (1) includes a first base plate (11) and a support base (12). The first base plate (11) is fixed to the ground by anchor bolts. The support base (12) is fixed to the top surface of the first base plate (11). The upper part of the support base (12) is provided with a U-shaped groove to accommodate the outer end of the mandrel (7). The top surfaces of the support base (12) on both sides of the U-shaped groove are in contact with the bottom surface of the large end (81) of the mandrel. The method for flipping the large nozzle core mold (8) includes the following steps: Horizontal to vertical: The core mold (8) is horizontally hoisted and placed on the second placement frame (2) and the third placement frame (3). The mandrel (7) at the large end (81) of the core mold is connected to the first placement frame (1) through the rotating lifting ring (5) and the chain (4). The core mold (8) is horizontally hoisted and moved towards the third placement frame (3) so that the chain (4) is in a taut state. The horizontal hoisting is disassembled, and the rotating lifting ring (5) on the mandrel (7) at the small end (82) of the core mold is hoisted. The core mold (8) is lifted and moved towards the first placement frame (1) at the same time until the core mold (8) is in a vertical state. The core mold (8) is slowly lowered so that the end face of the large end (81) of the core mold contacts the top surface of the first placement frame (1). After it is placed steadily, the chain (4) and the rotating lifting ring (5) are removed to realize the transformation of the core mold (8) from a horizontal state to a vertical state. Vertical to horizontal: A rotating lifting ring (5) is installed on the mandrel (7) at the small end (82) of the mandrel. The mandrel (8) is hoisted and placed on the first placement frame (1). After it is placed stably, the rotating lifting ring (5) and the chain (4) are installed on the mandrel (7) at the large end (81) of the mandrel. The mandrel (8) is hoisted upward until the chain (4) at the large end (81) of the mandrel is in a taut state. Then the hoist is moved towards the third placement frame (3) while the mandrel (8) is lowered until the mandrel (7) contacts the second placement frame (2) and the third placement frame (3). The mandrel (8) is hoisted horizontally and moved towards the first placement frame (1) so that the chain (4) at the large end (81) of the mandrel is in a relaxed state. The chain (4) and the rotating lifting ring (5) are removed to realize the transformation of the mandrel (8) from a vertical state to a horizontal state.

2. The large nozzle core mold flipping mechanism suitable for different sizes according to claim 1, characterized in that: Multiple stiffening ribs (14) are provided between the first base plate (11) and the support base (12).

3. The large nozzle core mold flipping mechanism suitable for different sizes according to claim 1, characterized in that: The second placement frame (2) includes a second base plate (21) and a first support rod (22). The second base plate (21) is fixed to the ground by anchor bolts. The first support rod (22) is erected on the top surface of the second base plate (21). The top end of the first support rod (22) is provided with a first arc-shaped groove (23) for placing the mandrel (7).

4. The large nozzle core mold flipping mechanism suitable for different sizes according to claim 3, characterized in that: The first support rod (22) is symmetrically provided with first diagonal braces (24) on both sides for connecting the second base plate (21) and the first support rod (22).

5. The large nozzle core mold flipping mechanism suitable for different sizes according to claim 1, characterized in that: The third placement rack (3) includes a third base plate (31) and a second support rod (32). The bottom of the third base plate (31) is provided with a sliding groove (34), which slides in cooperation with a guide rail (6) on the ground. The length direction of the guide rail (6) is consistent with the line direction connecting the second placement rack (2) and the third placement rack (3). The second support rod (32) is erected on the top surface of the third base plate (31), and the top of the second support rod (32) is provided with a second arc-shaped groove (35) for placing the mandrel (7).

6. The large nozzle core mold flipping mechanism suitable for different sizes according to claim 5, characterized in that: The guide rail (6) is provided with a plurality of threaded holes (61) spaced apart, and the third base plate (31) is provided with a corresponding through hole. The third base plate (31) and the guide rail (6) are fixed together by bolts, through holes and threaded holes (61).

7. The large nozzle core mold flipping mechanism suitable for different sizes according to claim 5, characterized in that: The second support rod (32) is provided with second diagonal braces (33) on both sides for connecting the third base plate (31) and the second support rod (32).

8. The large nozzle core mold flipping mechanism suitable for different sizes according to claim 1, characterized in that: The first placement rack (1), the second placement rack (2) and the third placement rack (3) are arranged on the same straight line.

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