Wax pattern treatment equipment based on investment casting skin lattice structure
By designing a device that combines immersion and wax swing, the unsolidified wax is dried by centrifugal force, the problem of difficulty in removing excess wax on the surface and inside of the wax mold in the prior art is solved, and the effect of rapid removal and dimensional stability is achieved.
Patent Information
- Application Number
- CN202421240115.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-06-03
AI Technical Summary
In the wax mold processing process of investment casting skin lattice structure, it is difficult for the prior art to effectively remove excess wax on the surface and inside of the wax mold, resulting in the casting rod diameter becoming thicker and the weight being increased. The process of removing wax after soaking wax requires a long time, and it is difficult to control the wax mold size.
A device that combines immersion and wax swing is designed. The rotating shaft and suspension components of the motor drive the wax mold tooling to rotate, and the centrifugal force is used to blow dry the unsolidified wax to achieve rapid removal of excess wax on the surface and inside the wax mold.
The rapid removal of excess wax on the surface and inside of the wax mold is achieved, which avoids the problem of casting rod diameter becoming thicker, shortens processing time, improves work efficiency, and can effectively prevent the wax mold from deforming and ensures stability in size.
Smart Images
Figure CN222552085U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to wax pattern processing equipment based on investment casting skin lattice structure, belonging to the technical field of casting process equipment. Background Art
[0002] Non-metallic powder 3D printing is one of the important steps in the skin lattice structure investment casting process, that is, using non-metallic powder for 3D printing to form the style of the skin lattice structure. Non-metallic powder includes but is not limited to PMMA powder. However, the surface of the skin lattice structure formed by 3D printing is rough, and the fine parts are uneven. Investment casting belongs to precision casting. The roughness of the wax mold directly affects the roughness of the cavity; and when the printed sample is placed in the air, its binder will evaporate, causing the sample size to shrink. Therefore, according to the conventional operation of ordinary wax molds, the printed wax mold needs to be dipped in wax, that is, the wax mold is completely immersed in the melted wax pool, which can not only fill the surface gaps and increase the finish, but also lock the binder to ensure the stability of the size.
[0003] However, for wax models with thin skin and dense internal lattices such as skin lattice structures, excess wax must be removed after wax dipping. The reasons are: first, there are strict requirements on the thickness of the skin. After wax dipping, there will be a layer of wax attached to the surface of the skin, and the thickness of the skin after wax dipping cannot increase too much. Therefore, it is necessary to remove the excess wax on the surface and only keep a very thin layer of wax; secondly, the internal lattice structure will adhere to a lot of wax. If the excess wax is not removed, the rod diameter will become thicker, so the rod diameter of the casting formed by investment casting will also become thicker, which will add extra weight. This is not allowed for the skin lattice structure that has strict requirements on weight.
[0004] For the above reasons, wax removal after wax dipping is a necessary step for such products and processes. The conventional wax removal operation on the market is to put the PMMA skin lattice structure after wax dipping into an oven and heat it at a certain temperature, so that the wax on the surface and inside of the wax model will melt and drip, but this process takes a certain amount of time, which includes the time from wax dipping to the oven and heating the wax to the melting point in the oven. During this period of time, the wax model will inevitably shrink due to heat, making it difficult to control the size. Utility Model Content
[0005] The purpose of the utility model is to provide a wax pattern processing device based on the investment casting skin lattice structure. The utility model designs a device that combines wax dipping and wax throwing. After wax dipping, the unsolidified wax is immediately thrown off in a short time, thus completing the wax dipping process and removing excess wax on the surface, and the operation is convenient.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: a wax model processing equipment based on the investment casting skin lattice structure, including a frame, the frame can be a cube formed by welding a steel structure, a platform that can move vertically up and down is arranged on the top of the frame, the platform is provided with a motor, a rotating shaft is arranged at the output end of the motor, the lower end of the rotating shaft extends below the platform and is provided with a suspension assembly, a wax model tooling is arranged at the bottom of the suspension assembly, the motor drives the wax model tooling to rotate through the rotating shaft and the suspension assembly, a wax pool is arranged on the upper surface of the bottom of the frame, the wax pool can be filled with wax liquid, the wax model tooling is arranged in the wax pool, and the up and down movement of the platform can drive the wax model tooling to move out and immerse in the wax liquid in the wax pool.
[0007] The aforementioned wax pattern processing equipment based on the investment casting skin lattice structure has a fixed plate on the top of the frame, a cylinder is fixedly installed on the surface of the fixed plate, the output end of the cylinder passes through the fixed plate and is fixed to the top of the platform, and the output end of the cylinder is extended and retracted to drive the platform to move up and down.
[0008] The aforementioned wax pattern processing equipment based on the investment casting skin lattice structure, two vertical guide rods are arranged on the upper surface of the platform, the top ends of the guide rods pass through the fixed plate, and the guide rods are distributed on both sides of the cylinder, and the guide rods cooperate with linear bearings to prevent the platform from rotating.
[0009] The aforementioned wax model processing equipment based on the investment casting skin lattice structure, the wax model tooling includes an upper hinge and a lower hinge, the top of the upper hinge is connected to the lower end of the suspension assembly, and the surface of one side of the upper hinge is provided with a frame around it. The function of the surrounding frames is to limit and protect the wax model during rotation. One end of the lower hinge is hingedly mounted on the frames at both ends of the bottom of the upper hinge, and a locking component is provided at the top of the upper hinge. A pin component that can be plugged and fixed to the locking component is provided at the top of the lower hinge. The pin component of the locking component can fix the top of the upper hinge and the top of the lower hinge together, and the surfaces of the upper hinge and the lower hinge are provided with evenly distributed circular holes to allow enough space for wax to soak in or flow out.
[0010] The aforementioned wax model processing equipment based on the investment casting skin lattice structure, the relative surfaces of the upper hinge and the lower hinge are provided with evenly distributed small cones, the function of the small cones is to support the wax model, ensure support while reducing the contact area, so that the wax can better infiltrate the wax model, and can also better throw out excess wax.
[0011] The aforementioned wax pattern processing equipment based on the investment casting skin lattice structure, the side walls of the frame are all provided with through holes, and when wax dipping and wax throwing are performed, channels for wax to flow are formed.
[0012] The aforementioned wax pattern processing equipment based on the investment casting skin lattice structure, the suspension assembly includes a suspension platform and a suspension plate, the suspension platform is fixedly connected to the lower end of the rotating shaft, a groove is provided in the middle of the front and rear sides of the suspension platform, a connecting rod is provided at the bottom center of the suspension plate, the connecting rod is clamped in the groove, circular bosses are provided on both sides of the groove on the upper surface of the suspension platform, tooling holes are provided on both sides of the suspension plate, the circular bosses are inserted into the tooling holes, limiting the rotational freedom and the front and rear, left and right translational freedom of the suspension plate, and the lower end of the connecting rod is fixedly connected to the upper hinge.
[0013] The aforementioned wax pattern processing equipment based on the investment casting skin lattice structure, the connecting rod is provided with a tooling nut through a threaded sleeve, and the tooling nut is tightened to the lower surface of the suspension platform to limit the upward and downward translational freedom of the suspension plate.
[0014] The aforementioned wax pattern processing equipment based on the investment casting skin lattice structure, the outer wall of the wax pool is equipped with a heating device, such as a heating belt, which can heat and keep the temperature of the wax pool constant to ensure that the wax in the wax pool is in a melted state
[0015] Compared with the prior art, the utility model has at least the following beneficial effects:
[0016] (1) The utility model can not only realize the limiting and clamping of the wax model of the lattice structure of the skin of brittle material, ensuring that the wax model is not damaged during the rotation process, but also can well ensure the immersion and throwing out of the wax, and can be firmly combined with the wax dipping and throwing equipment.
[0017] (2) The utility model designs a device that combines wax dipping and wax throwing. After wax dipping, the unsolidified wax can be immediately thrown off in a short time. In this way, the wax dipping process is completed and the excess wax on the surface can be removed. The removal time is short and the effect is good. The deformation of the wax model and the difficulty in controlling the size are prevented. At the same time, the work efficiency is improved and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0019] Figure 2 It is a schematic diagram of the wax model tooling structure of the utility model;
[0020] Figure 3 It is a schematic diagram of the structure of the suspension assembly of the utility model;
[0021] Figure 4 It is the front view of the utility model when it is in a high position;
[0022] Figure 5 It is the front view of the utility model when it is in the low position;
[0023] Figure 6 It is the front view of the utility model when it is in the middle position.
[0024] Figure markings: 1-cylinder, 2-guide rod, 3-frame, 4-platform, 5-motor, 6-rotating shaft, 7-suspension assembly, 8-wax mold tooling, 9-wax pool, 10-fixed plate, 11-upper hinge, 12-lower hinge, 13-frame, 14-locking component, 15-latch component, 16-round hole, 17-small round table, 18-through hole, 19-suspension platform, 20-suspension plate, 21-groove, 22-connecting rod, 23-circular boss, 24-tooling hole, 25-tooling nut.
[0025] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. DETAILED DESCRIPTION
[0026] Embodiment 1 of the utility model: A wax pattern processing equipment based on the skin lattice structure of investment casting, including a frame 3, the frame 3 can be a cube formed by welding a steel structure, a platform 4 which can move vertically up and down is arranged on the top of the frame 3, the platform 4 is provided with a motor 5, a rotating shaft 6 is arranged at the output end of the motor 5, the lower end of the rotating shaft 6 extends below the platform 4 and is provided with a suspension assembly 7, a wax pattern tooling 8 is arranged at the bottom of the suspension assembly 7, the motor 5 drives the wax pattern tooling 8 to rotate through the rotating shaft 6 and the suspension assembly 7, a wax pool 9 is arranged on the upper surface of the bottom of the frame 3, the wax pool 9 can be filled with wax liquid, the wax pattern tooling 8 is placed in the wax pool 9, and the platform 4 can move up and down to drive the wax pattern tooling 8 to move out of or immerse in the wax liquid in the wax pool 9.
[0027] Embodiment 2 of the present utility model: A wax pattern processing equipment based on an investment casting skin lattice structure comprises a frame 3, which can be a cube formed by welding a steel structure, a platform 4 which can move vertically up and down is arranged on the top of the frame 3, a motor 5 is arranged on the platform 4, a rotating shaft 6 is arranged on the output end of the motor 5, the lower end of the rotating shaft 6 extends below the platform 4 and is provided with a suspension assembly 7, a wax pattern tooling 8 is arranged on the bottom of the suspension assembly 7, the motor 5 drives the wax pattern tooling 8 to rotate through the rotating shaft 6 and the suspension assembly 7, a wax pool 9 is arranged on the upper surface of the bottom of the frame 3, the wax pool 9 can be filled with wax liquid, the wax pattern tooling 8 is placed in the wax pool 9, and the platform 4 can move up and down to drive the wax pattern tooling 8 to move out of or immerse in the wax liquid in the wax pool 9.
[0028] A fixed plate 10 is provided on the top of the frame 3, and a cylinder 1 is fixedly installed on the surface of the fixed plate 10. The output end of the cylinder 1 passes through the fixed plate 10 and is fixed to the top of the platform 4. The output end of the cylinder 1 is telescoped to drive the platform 4 to move up and down. Two vertical guide rods 2 are provided on the upper surface of the platform 4. The top ends of the guide rods 2 pass through the fixed plate 10, and the guide rods 2 are distributed on both sides of the cylinder 1. The guide rods 2 cooperate with linear bearings to prevent the platform 4 from rotating.
[0029] Embodiment 3 of the present utility model: A wax pattern processing equipment based on the skin lattice structure of investment casting, including a frame 3, the frame 3 can be a cube formed by welding a steel structure, a platform 4 which can move vertically up and down is arranged on the top of the frame 3, the platform 4 is provided with a motor 5, a rotating shaft 6 is arranged at the output end of the motor 5, the lower end of the rotating shaft 6 extends below the platform 4 and is provided with a suspension assembly 7, a wax pattern tooling 8 is arranged at the bottom of the suspension assembly 7, the motor 5 drives the wax pattern tooling 8 to rotate through the rotating shaft 6 and the suspension assembly 7, a wax pool 9 is arranged on the upper surface of the bottom of the frame 3, the wax pool 9 can be filled with wax liquid, the wax pattern tooling 8 is placed in the wax pool 9, and the platform 4 can move up and down to drive the wax pattern tooling 8 to move out of or immerse in the wax liquid in the wax pool 9.
[0030] The wax model tooling 8 includes an upper hinge 11 and a lower hinge 12. The top of the upper hinge 11 is connected to the lower end of the suspension assembly 7. A frame 13 is arranged around the surface of one side of the upper hinge 11. The frame 13 around the wax model is used to limit and protect the wax model during rotation. One end of the lower hinge 12 is hingedly mounted on the frame 13 at both ends of the bottom of the upper hinge 11. The side walls of the frame 13 are provided with through holes 18. When wax dipping and wax throwing are performed, a channel for wax to flow is formed. A locking component 14 is arranged on the top of the upper hinge 11, and a pluggable The latch component 15 is fixed to the locking component 14, and the latch component 15 of the locking component 14 can fix the top of the upper hinge 11 and the lower hinge 12 together. The surfaces of the upper hinge 11 and the lower hinge 12 are provided with evenly distributed circular holes 16, so that the wax has enough space to soak in or flow out. The relative surfaces of the upper hinge 11 and the lower hinge 12 are provided with evenly distributed small round cones 17. The function of the small round cones 17 is to support the wax mold, ensure support while reducing the contact area, so that the wax can better soak the wax mold and can also better throw out excess wax.
[0031] Embodiment 4 of the present utility model: A wax pattern processing equipment based on the skin lattice structure of investment casting, including a frame 3, the frame 3 can be a cube formed by welding a steel structure, a platform 4 which can move vertically up and down is arranged on the top of the frame 3, the platform 4 is provided with a motor 5, a rotating shaft 6 is arranged at the output end of the motor 5, the lower end of the rotating shaft 6 extends below the platform 4 and is provided with a suspension assembly 7, a wax pattern tooling 8 is arranged at the bottom of the suspension assembly 7, the motor 5 drives the wax pattern tooling 8 to rotate through the rotating shaft 6 and the suspension assembly 7, a wax pool 9 is arranged on the upper surface of the bottom of the frame 3, the wax pool 9 can be filled with wax liquid, the wax pattern tooling 8 is placed in the wax pool 9, and the platform 4 can move up and down to drive the wax pattern tooling 8 to move out of or immerse in the wax liquid in the wax pool 9.
[0032] The wax model tooling 8 includes an upper hinge 11 and a lower hinge 12. The top of the upper hinge 11 is connected to the lower end of the suspension assembly 7. A frame 13 is arranged around the surface of one side of the upper hinge 11. The frame 13 around the wax model is used to limit and protect the wax model during rotation. One end of the lower hinge 12 is hingedly mounted on the frame 13 at both ends of the bottom of the upper hinge 11. The side walls of the frame 13 are provided with through holes 18. When wax dipping and wax throwing are performed, a channel for wax to flow is formed. A locking component 14 is arranged on the top of the upper hinge 11, and a pluggable The latch component 15 is fixed to the locking component 14, and the latch component 15 of the locking component 14 can fix the top of the upper hinge 11 and the lower hinge 12 together. The surfaces of the upper hinge 11 and the lower hinge 12 are provided with evenly distributed circular holes 16, so that the wax has enough space to soak in or flow out. The relative surfaces of the upper hinge 11 and the lower hinge 12 are provided with evenly distributed small round cones 17. The function of the small round cones 17 is to support the wax mold, ensure support while reducing the contact area, so that the wax can better soak the wax mold and can also better throw out excess wax.
[0033] The suspension assembly 7 includes a suspension platform 19 and a suspension plate 20. The suspension platform 19 is fixedly connected to the lower end of the rotating shaft 6. A groove 21 is provided in the middle of the front and rear sides of the suspension platform 19. A connecting rod 22 is provided at the bottom center of the suspension plate 20. The connecting rod 22 is clamped in the groove 21. Circular bosses 23 are provided on both sides of the groove 21 on the upper surface of the suspension platform 19. Tooling holes 24 are provided on both sides of the suspension plate 20. The circular bosses 23 are inserted into the tooling holes 24 to limit the rotational freedom and the front and rear, left and right translational freedom of the suspension plate 20. A tooling nut 25 is threadedly sleeved on the connecting rod 22. The tooling nut 25 is tightened to the lower surface of the suspension platform 19 to limit the translational freedom of the suspension plate 20 in the up and down directions. The lower end of the connecting rod 22 is fixedly connected to the upper hinge 11.
[0034] Specifically, a heating device, such as a heating belt, is installed on the outer wall of the wax pool 9, which can heat and maintain the temperature of the wax pool at a constant level, ensuring that the wax in the wax pool is in a melted state.
[0035] The working principle of an embodiment of the utility model: During the use of the utility model, the initial state is that the cylinder 1 is in a retracted state, the platform 4 is in a high position, the cylinder 1 and the motor 5 are not turned on, the wax model is placed in the wax model tooling 8, and it is suspended on the suspension component 7, so that the circular boss 23 is inserted into the tooling hole 24, and then the tooling nut 25 is tightened to the lower surface of the suspension platform 19 to fix the wax model tooling 8; the cylinder 1 is started, the piston moves downward, and when the platform 4 moves downward and is in a low position, the cylinder 1 stops working, and at this time the wax model tooling 8 is completely immersed in the wax pool 9, and the wax dipping is completed. Process: cylinder 1 starts, the piston moves upward, and the platform 4 moves upward and stops working when it is in the middle position. At this time, the wax model tooling 8 is located above the liquid level of the wax pool 9 and is still in the wax pool 9. In this way, the solidification of the wax can be delayed through the heating effect of the wax pool 9. The motor 5 is turned on, and the wax model tooling 8 rotates at a certain speed, and the centrifugal force is used to achieve the effect of wax throwing, and the excess wax deposited on the surface and inside is thrown out; finally, the wax is returned to its original position, the cylinder 1 is started, the piston moves upward, and the platform 4 is in a high position again, and the cylinder 1 stops working, and the wax model tooling 8 is removed, completing a wax dipping and wax throwing work cycle.
Claims
1. A wax pattern processing device based on investment casting skin lattice structure, characterized in that: The invention comprises a frame (3), wherein a platform (4) capable of vertically moving up and down is arranged at the top of the frame (3), the platform (4) is provided with a motor (5), a rotating shaft (6) is arranged at the output end of the motor (5), the lower end of the rotating shaft (6) extends below the platform (4) and is provided with a suspension component (7), a wax model tool (8) is arranged at the bottom of the suspension component (7), a wax pool (9) is arranged on the upper surface of the bottom of the frame (3), and the wax model tool (8) is placed in the wax pool (9).
2. The wax pattern processing equipment based on the investment casting skin lattice structure according to claim 1 is characterized in that: A fixing plate (10) is provided on the top of the frame (3), a cylinder (1) is fixedly mounted on the surface of the fixing plate (10), and an output end of the cylinder (1) passes through the fixing plate (10) and is fixed to the top of the platform (4).
3. The wax pattern processing equipment based on the investment casting skin lattice structure according to claim 2 is characterized in that: Two vertical guide rods (2) are arranged on the upper surface of the platform (4), the top ends of the guide rods (2) penetrate the fixing plate (10), and the guide rods (2) are distributed on both sides of the cylinder (1).
4. The wax pattern processing equipment based on the investment casting skin lattice structure according to claim 1 is characterized in that: The wax model tooling (8) comprises an upper hinge (11) and a lower hinge (12); the top of the upper hinge (11) is connected to the lower end of the suspension component (7); a frame (13) is arranged around one side surface of the upper hinge (11); one end of the lower hinge (12) is hingedly mounted on the frame (13) at both ends of the bottom of the upper hinge (11); a locking component (14) is arranged at the top of the upper hinge (11); a latch component (15) which can be plugged and fixed to the locking component (14) is arranged at the top of the lower hinge (12); and evenly distributed round holes (16) are provided on the surfaces of the upper hinge (11) and the lower hinge (12).
5. The wax pattern processing equipment based on the investment casting skin lattice structure according to claim 4 is characterized in that: The opposing surfaces of the upper hinge (11) and the lower hinge (12) are both provided with evenly distributed fine round terraces (17).
6. The wax pattern processing equipment based on the investment casting skin lattice structure according to claim 5 is characterized in that: The side walls of the frame (13) are each provided with a through hole (18).
7. A wax pattern processing device based on investment casting skin lattice structure according to claim 4 or 6, characterized in that: The suspension assembly (7) comprises a suspension platform (19) and a suspension plate (20), wherein the suspension platform (19) is fixedly connected to the lower end of the rotating shaft (6), a groove (21) is provided in the middle of the front and rear sides of the suspension platform (19), a connecting rod (22) is provided at the bottom center of the suspension plate (20), and the connecting rod (22) is clamped in the groove (21), circular bosses (23) are provided on both sides of the groove (21) on the upper surface of the suspension platform (19), tooling holes (24) are provided on both sides of the suspension plate (20), and the circular bosses (23) are inserted into the tooling holes (24), and the lower end of the connecting rod (22) is fixedly connected to the upper hinge (11).
8. The wax pattern processing equipment based on investment casting skin lattice structure according to claim 7 is characterized in that: A tooling nut (25) is sleeved on the connecting rod (22) via a thread.
9. The wax pattern processing equipment based on investment casting skin lattice structure according to claim 1 is characterized in that: A heating device is installed on the outer wall of the wax pool (9).