Investment casting dewaxing device

Abstract

The utility model relates to the technical field of investment casting, in particular to an investment casting dewaxing device which comprises a heating box, a lifting assembly and a hanging assembly, the lifting assembly comprises supporting plates, side plates, a top plate, a lifter and a cover plate, the heating box is provided with a heating cavity with an upper opening, the supporting plates are symmetrically arranged on the left side and the right side of the heating box, and the hanging assembly is arranged on the side plates. According to requirements, hanging frames with appropriate specifications can be selected to bear materials, a worm is driven to rotate through a handle, then a worm gear drives a positive and negative tooth rod to rotate, the distance between hooks on two sets of sliding plates is adjusted, the hanging frames are stably hung, the heating box is immersed in hot water in a heating cavity during dewaxing, and at the moment, the cover plate closes the heating box. And after dewaxing operation is completed, the cover plate ascends under the action of the lifter, hot water is provided for the output pump through the hot water tank, the hot water is fed into the flow dividing pipe through the connecting pipe to be sprayed out, finally spraying on the materials in the hanging frame is completed, and dewaxing stability is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of investment casting technology, specifically to a dewaxing device for investment casting. Background Technology

[0002] Investment casting, also known as lost-wax casting, is a casting process that produces complex and precision parts through wax pattern forming, multi-layer coating, lost-wax baking, and metal pouring.

[0003] Traditional investment casting dewaxing devices use an immersion method, placing the investment mold in hot water. They often require specific hangers to hold the material. During immersion, if the opening of the hot water tank is not sealed, it can easily cause heat loss and foreign objects to enter. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a dewaxing device for investment casting.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dewaxing device for investment casting, comprising a heating chamber, a lifting assembly, and a mounting assembly. The lifting assembly includes a support plate, a side plate, a top plate, a lifter, and a cover plate. The heating chamber is provided with a heating cavity with an upper opening. Support plates are symmetrically arranged on the left and right sides of the heating chamber. The side plates are provided on each support plate. The top plate is connected to the side plates below. The output end of the lifter passes through the top plate and is connected to the cover plate. The cover plate is adapted to the upper opening of the heating cavity.

[0008] The mounting assembly includes an auxiliary plate, a cover, a handle, a worm gear, a worm wheel, a forward and reverse threaded rod, a sliding plate, a hook, and a hanging frame. Auxiliary plates are symmetrically arranged on the left and right sides below the cover. Two sets of forward and reverse threaded rods are rotatably arranged between the two sets of auxiliary plates. A cover is located on the side of one set of auxiliary plates away from the cover. A worm gear and two sets of worm wheels are housed within the cover. The worm gear meshes with the two sets of worm wheels and passes through the cover, connecting to the handle. Two symmetrically arranged sliding plates are also located below the cover. Each sliding plate has threaded holes for threaded connection with the forward and reverse threaded rods. A hook is also located below the sliding plate. The hanging frame has hanging holes on its left and right sides that match the hooks. Several sets of drainage holes are provided on the hanging frame.

[0009] To facilitate rinsing of materials removed from the hot water frame after cleaning, this utility model is improved by including a hot water tank around the heating box, an output pump on the hot water tank, a gap between the slide plate and the cover plate, several diversion pipes below the cover plate, several output holes below the diversion pipes, the diversion pipes being positioned above the slide plate, one end of the output pump being connected to a connecting pipe, and the other end of the connecting pipe passing through the cover plate and connected to the input end of the diversion pipe.

[0010] To ensure the strength of the support plate, this utility model is improved by providing reinforcing ribs on the left and right sides of the heating box that are connected to the support plate.

[0011] Preferably, the heating box is provided with support legs at the four corners below.

[0012] To facilitate sealing and drainage, this utility model is improved by providing several sets of drain pipes on the front of the heating box, and the drain pipes are equipped with switch valves.

[0013] Preferably, the cover plate is further provided with a guide rod that penetrates the top plate.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a dewaxing device for investment casting, which has the following beneficial effects:

[0016] This investment casting dewaxing device uses a hanging frame suspended from the slide plate via hooks. Depending on the requirements, a hanging frame with appropriate specifications can be selected to carry the material. A handle drives a worm gear to rotate, which in turn drives a forward and reverse toothed rod to rotate. Adjusting the distance between the hooks on the two sets of slide plates stabilizes the hanging frame. During dewaxing, the material is immersed in hot water in the heating chamber. At this time, the cover plate closes the heating chamber. After dewaxing is complete, the cover plate rises under the action of a lifter, supplying hot water to the output pump through the hot water tank. The connecting pipe sends the hot water into the distribution pipe for spraying, ultimately spraying the material inside the hanging frame to ensure the stability of the dewaxing process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a bottom view of the structure of this utility model;

[0019] Figure 3 This is a rear view schematic diagram of the structure of this utility model;

[0020] Figure 4 This is a partial front view schematic diagram of the structure of this utility model.

[0021] In the diagram: 1. Heating box; 2. Support plate; 3. Side plate; 4. Top plate; 5. Lifter; 6. Cover plate; 7. Auxiliary plate; 8. Cover body; 9. Handle; 10. Worm gear; 11. Worm wheel; 12. Positive and negative toothed rod; 13. Slide plate; 14. Hook; 15. Hanging frame; 16. Hot water tank; 17. Output pump; 18. Diverter pipe; 19. Reinforcing rib; 20. Support leg; 21. Drain pipe; 22. Switch valve; 23. Guide rod. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-4 A dewaxing device for investment casting includes a heating chamber 1, a lifting assembly, and a mounting assembly. The lifting assembly includes a support plate 2, side plates 3, a top plate 4, a lifter 5, and a cover plate 6. The heating chamber 1 is provided with a heating cavity with an upper opening. The support plates 2 are symmetrically arranged on the left and right sides of the heating chamber 1. The side plates 3 are provided on each support plate 2. The top plate 4 is connected to the side plates 3 at the bottom. The output end of the lifter 5 passes through the top plate 4 and is connected to the cover plate 6. The cover plate 6 is adapted to the upper opening of the heating cavity.

[0024] Heating rods are embedded in the inner wall of heating box 1. Support plates 2 are provided on the left and right sides of heating box 1 to provide stable support for side plates 3. The two sets of side plates 3 provide stable support for top plate 4. Initially, the lifting device 5 drives the cover plate 6 to a higher position under the support of top plate 4.

[0025] In this embodiment, the mounting assembly includes an auxiliary plate 7, a cover 8, a handle 9, a worm gear 10, a worm wheel 11, a forward and reverse toothed rod 12, a sliding plate 13, a hook 14, and a hanging frame 15. Auxiliary plates 7 are symmetrically arranged on the left and right sides below the cover plate 6. Two sets of forward and reverse toothed rods 12 are rotatably arranged between the two sets of auxiliary plates 7. A cover 8 is arranged on the side of one set of auxiliary plates 7 away from the cover plate 6. The worm gear 10 and two sets of worm wheels 11 are arranged inside the cover 8. The worm gear 10 meshes with the two sets of worm wheels 11. The worm gear 10 passes through the cover 8 and is connected to the handle 9. Two sets of symmetrically arranged sliding plates 13 are also arranged below the cover plate 6. The sliding plates 13 have screw holes that are threaded to the forward and reverse toothed rods 12. A hook 14 is also arranged below the sliding plates 13. The hanging frame 15 has hanging holes on the left and right sides that are adapted to the hooks 14. The hanging frame 15 has several sets of drainage holes.

[0026] The two sets of auxiliary plates 7 below the cover plate 6 provide stable support for the two sets of positive and negative toothed rods 12. The handle 9 drives the worm gear 10 to rotate, and the worm gear 10 drives the two sets of worm wheels 11 to rotate. The rotation of the two sets of positive and negative toothed rods 12 causes the two sets of sliding plates 13 to move towards each other. At this time, the corresponding hooks 14 on the left and right sides move towards each other, and the hooks 14 stably hang the hanging frame 15 with the material.

[0027] The lifting device 5 can be a cylinder. The cylinder drives the cover plate 6 to descend until the hanging frame 15 is completely submerged in the water of the heating box 1. It should be noted that the heating rod can evenly heat the water to 80-90 degrees Celsius. At this time, the cover plate 6 closes the heating box 1. When the cover plate 6 is closed, it forms a physical barrier to prevent dust and impurities from falling into the heating chamber during the dewaxing process. At the same time, it avoids operators from accidentally coming into contact with high-temperature hot water, thus improving safety and preventing heat loss. After a certain period of time, the lifting device 5 is activated, and the lifting device 5 drives the cover plate 6 to rise. The staff can then remove the hanging frame 15 with the dewaxed material.

[0028] In actual use, a hot water tank 16 is also provided around the heating box 1. An output pump 17 is provided on the hot water tank 16. There is a gap between the slide plate 13 and the cover plate 6. Several diversion pipes 18 are provided below the cover plate 6. Several output holes are provided below the diversion pipes 18. The diversion pipes 18 are located above the slide plate 13. One end of the output pump 17 is connected to the connecting pipe. The other end of the connecting pipe passes through the cover plate 6 and is connected to the input end of the diversion pipe 18. The hot water tank 16 can stably provide hot water. When the hanging frame 15 carries the dewaxed material, wax will inevitably remain on the material. The output pump 17 is started, and the output pump 17 sends the hot water in the hot water tank 16 into the connecting pipe, and then sprays it out from the diversion pipes 18 to further rinse the material in the hanging frame 15 and avoid the wax-containing liquid remaining on the material.

[0029] In this embodiment, the heating box 1 is also provided with reinforcing ribs 19 on the left and right sides that are connected to the support plate 2 to ensure the support strength of the heating box 1 to the support plate 2.

[0030] In this embodiment, support legs 20 are provided at the four corners of the heating box 1 to provide stable support for the heating box 1.

[0031] In actual use, the front of the heating box 1 is also provided with several sets of drain pipes 21. Each drain pipe 21 is equipped with a switch valve 22. Since the density of wax is lower than that of water, it will float on the water surface. After being rinsed, the material is removed from the water surface. The drain pipe 21 at the corresponding height is opened, and the switch valve 22 is opened and closed to facilitate the flow of water and wax oil at the corresponding height, so as to ensure the stability of subsequent material dewaxing.

[0032] In this embodiment, the cover plate 6 is also provided with a guide rod 23 that passes through the top plate 4 to ensure the stability of the cover plate 6 in raising and lowering.

[0033] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0034] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A dewaxing device for investment casting, comprising a heating chamber (1), a lifting assembly, and a mounting assembly, characterized in that, The lifting assembly includes a support plate (2), a side plate (3), a top plate (4), a lifter (5), and a cover plate (6). The heating box (1) is provided with a heating cavity with an upper opening. The heating box (1) is symmetrically provided with support plates (2) on the left and right sides. The support plates (2) are provided with the side plates (3) on each of the support plates (2). The top plate (4) is connected to the side plates (3) at the bottom. The output end of the lifter (5) passes through the top plate (4) and is connected to the cover plate (6). The cover plate (6) is adapted to the upper opening of the heating cavity. The mounting assembly includes an auxiliary plate (7), a cover (8), a handle (9), a worm gear (10), a worm wheel (11), a forward and reverse toothed rod (12), a sliding plate (13), a hook (14), and a hanging frame (15). The auxiliary plates (7) are symmetrically arranged on the left and right sides below the cover plate (6). Two sets of forward and reverse toothed rods (12) are rotatably arranged between the two sets of auxiliary plates (7). A cover (8) is arranged on the side of one set of auxiliary plates (7) away from the cover plate (6). The worm gear (10) and two sets of worm wheels (11) are arranged inside the cover (8). The worm (10) meshes with two sets of worm wheels (11), the worm (10) passes through the cover (8) and is connected to the handle (9), and two sets of symmetrically arranged sliding plates (13) are provided below the cover plate (6). The sliding plates (13) are provided with screw holes that are threaded to the positive and negative tooth rods (12). The sliding plates (13) are also provided with hooks (14) below the sliding plates (13). The left and right sides of the hanging frame (15) are provided with hanging holes that are compatible with the hooks (14). The hanging frame (15) is provided with several sets of drainage holes.

2. The investment casting dewaxing device according to claim 1, characterized in that, A hot water tank (16) is also provided around the heating box (1). An output pump (17) is provided on the hot water tank (16). There is a gap between the slide plate (13) and the cover plate (6). Several diversion pipes (18) are provided below the cover plate (6). Several output holes are provided below the diversion pipes (18). The diversion pipes (18) are located above the slide plate (13). One end of the output pump (17) is connected to a connecting pipe. The other end of the connecting pipe passes through the cover plate (6) and is connected to the input end of the diversion pipe (18).

3. The investment casting dewaxing device according to claim 2, characterized in that, The heating box (1) is also provided with reinforcing ribs (19) on the left and right sides that are connected to the support plate (2).

4. The investment casting dewaxing device according to claim 3, characterized in that, The heating box (1) is provided with support legs (20) at the four corners below.

5. The investment casting dewaxing device according to claim 4, characterized in that, The heating box (1) is also provided with several sets of drain pipes (21) on the front, and the drain pipes (21) are provided with switch valves (22).

6. The dewaxing device for investment casting according to claim 5, characterized in that, The cover plate (6) is also provided with a guide rod (23) that passes through the top plate (4).

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