A coating tool for a wax pattern module

Abstract

The utility model discloses a kind of coating tool of wax mould module, it is related to non-ferrous die casting technical field, including material holding tank, bottom moving frame, filter frame, support rod, upper rotary frame and core rod;The bottom moving frame supports filter frame, and makes filter frame be located above material holding tank;The support rod is lifted on bottom moving frame upper end, and one end of the upper rotary frame is rotatably connected with support rod upper end;The core rod is connected with wax mould module, and is rotatably connected with upper rotary frame, and make wax mould module be located above filter frame;The utility model can make wax mould module bidirectional 360 ° rotation, coating has no dead angle, and material is controlled evenly;And by filter frame, sand particle in slurry can be directly filtered, so that slurry can be reused, slow down slurry viscosity increase;The utility model can improve shell quality, improve production efficiency, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of investment casting technology for non-ferrous metals, and in particular to a coating tooling for a wax pattern module. Background Technology

[0002] Investment casting, also known as lost-wax casting, is characterized by its high dimensional accuracy and surface finish, allowing for direct use with little or no machining. It is an advanced near-net-shape forming process. The main process flow of investment casting is as follows: process design - wax pattern making - cleaning - shell preparation - dewaxing - baking - mold assembly - melting and pouring.

[0003] Shell preparation is a core step in the investment casting process. The shell preparation process involves coating, sprinkling sand, and drying the surface of the investment mold to form a multi-layered shell. Coating is a crucial step in the shell-making process. During coating, the material must be moved up and down or rotated in the slurry tank according to the structural characteristics of the investment mold. It is essential to prevent air bubbles and material accumulation in concave corners, grooves, and small holes on the investment mold, ensuring uniform distribution of the slurry across all parts of the mold and avoiding incomplete coating or localized accumulation.

[0004] Dip coating refers to preparing a certain amount of slurry within a volume that can contain the module (the slurry should at least cover half the height of the module). For products produced in large quantities and continuously, dip coating is a good choice. However, for prototypes or small-batch, discontinuous production, dip coating significantly increases production costs and causes waste. Typically, for prototypes or small-batch, discontinuous production, manual slurry application is used. Manual slurry application allows for the minimum amount of slurry prepared based on the quantity of products to be produced, reducing waste. However, manual slurry application also has drawbacks. It usually requires at least five workers, and during operation, there is a risk of localized missed areas and uneven slurry control due to angle issues, increasing labor costs and affecting product quality. Furthermore, during the second coat application, some of the abrasive particles from the previous layer on the module may detach into the slurry, increasing its viscosity and affecting the surface coating properties of subsequent products. Utility Model Content

[0005] The purpose of this utility model is to provide a coating tooling for a wax mold module in order to solve at least one of the problems in the prior art mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A coating fixture for a wax model module includes a material container, a bottom movable frame, a filter frame, a support rod, an upper rotating frame, and a core rod. The bottom movable frame supports the filter frame and positions it above the material container. The support rod moves up and down at the upper end of the bottom movable frame, and one end of the upper rotating frame is rotatably connected to the upper end of the support rod. The core rod is connected to the wax model module and rotatably connected to the upper rotating frame, positioning the wax model module above the filter frame.

[0007] Furthermore, channel steels of different heights are provided on the lower sides of both ends of the material trough to make the material trough tilt.

[0008] Furthermore, the bottom movable frame includes a rectangular frame and a triangular bracket. The rectangular frame extends into the lower part of the material trough and is equipped with casters on its lower side. The triangular bracket is connected to the upper side of one end of the rectangular frame.

[0009] Furthermore, the upper end of the bottom movable frame is provided with a vertical positioning post, and the positioning post is provided with several horizontal through holes of different heights.

[0010] Furthermore, the filter frame includes a stainless steel filter screen and a rectangular frame surrounding the stainless steel filter screen. One end of the rectangular frame is connected to a ring sleeve fitted on the outside of the bottom of the positioning post, and a screw that mates with the positioning post passes through one side wall of the ring sleeve.

[0011] Furthermore, the support rod includes a lifting tube sleeved on the outside of the positioning post and a hexagonal threaded sleeve connected to the upper end of the lifting tube. The lifting tube is provided with several transverse through holes of different heights, and a pin that cooperates with the positioning post for positioning is inserted through the lifting tube.

[0012] Furthermore, the upper rotating frame has a U-shaped structure, and a rotating shaft is connected to the outer side of the middle part of the upper rotating frame. The rotating shaft passes through the hexagonal threaded sleeve and rotates inside the hexagonal threaded sleeve. The end of the rotating shaft is provided with a through hole for a cotter pin to pass through.

[0013] Furthermore, the core rod passes through the wax mold module; the upper rotating frame has corresponding arc grooves at both ends to support the ends of the core rod, and an arc-shaped buckle is hinged at the corresponding arc groove of the upper rotating frame. The buckle and the arc groove surround the core rod and support the core rod to rotate.

[0014] Furthermore, both ends of the core rod are provided with rings.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The lower part of the material trough in this utility model is suspended in the middle, and the bottom movable frame is equipped with casters to move it to the required position, ensuring that the module can reach the predetermined work position smoothly and quickly. Only one person is needed to operate the coating, material control and sand spreading process, saving 3 / 5 of the labor cost. The wax mold module is transferred through the bottom movable frame, reducing the damage to the module caused by repeated manual handling, reducing labor costs, increasing the product yield, and increasing production efficiency. The filter frame of this utility model can effectively filter out sand particles that fall off the module, ensure the viscosity and cleanliness of the slurry, increase the number of times the slurry shell can be reused, ensure the coating effect, and thus improve the quality of the shell. This utility model can support the wax mold module to rotate 360° in both directions, which can ensure that no part is missing during the coating process, control the material evenly and prevent slurry accumulation, greatly improve the quality of the product shell, and ensure the quality of the casting. The tooling material and production method of this utility model are relatively simple, highly operable, and can effectively reduce production costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the bottom movable frame of this utility model.

[0018] Figure 3 This is a schematic diagram of the upper rotating frame of this utility model.

[0019] Figure 4 This is a schematic diagram of the support rod of this utility model.

[0020] In the diagram: 1. Material trough; 2. Bottom movable frame; 3. Filter frame; 4. Support rod; 5. Upper rotating frame; 6. Wax mold sprue plate; 7. Casters; 8. Low channel steel; 9. High channel steel; 10. Positioning post; 11. Ring sleeve; 12. Rotating shaft; 13. Arc groove; 14. Buckle; 15. Core rod; 16. Circular ring; 41. Hexagonal threaded sleeve; 42. Lifting pipe. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] Specific embodiments of the coating tooling for the wax mold assembly provided by this utility model: Please see Figures 1-4 The coating fixture for the wax model module includes a material container 1, a bottom movable frame 2, a filter frame 3, a support rod 4, an upper rotating frame 5, and a core rod 15.

[0023] The bottom movable frame 2 is placed on the ground to support and move the wax model assembly. The bottom movable frame 2 is welded from square steel and round steel. The bottom movable frame 2 includes a rectangular frame and a triangular bracket. The rectangular frame extends into the lower middle part of the material trough 1, and four casters 7 are installed on the lower side of the rectangular frame. The triangular bracket is connected to the upper side of one end of the rectangular frame.

[0024] The bottom moving frame 2 is moved by the omnidirectional wheels 7 at the bottom, ensuring that the wax mold module above it moves smoothly and quickly to the next process, thereby improving the coating rate.

[0025] The material collection trough 1 is used to collect the slurry dripping from the wax model assembly. The middle of the material collection trough 1 is located above the bottom movable frame 2. The material collection trough 1 is formed by welding together stainless steel plates. Channel steel of different heights is welded to the lower sides of both ends of the material collection trough 1; that is, a low channel steel 8 is welded to the lower side of one end of the material collection trough 1, and a high channel steel 9 is welded to the lower side of the other end, making the material collection trough 1 inclined at one end and facilitating the rapid concentration of slurry at one end. The rectangular frame of the bottom movable frame 2 can extend into the lower side of the material collection trough 1 between the two channel steels.

[0026] The lower end of the material trough 1 is arc-shaped, and the slurry gathers at the arc end of the material trough 1. The side wall of the lower end of the material trough 1 is relatively high to prevent the slurry from overflowing.

[0027] The bottom movable frame 2 supports the filter frame 3 and positions the filter frame 3 above the material trough 1; the upper end of the bottom movable frame 2, i.e. the upper end of the triangular bracket, is provided with a vertical positioning post 10, and the positioning post 10 is provided with several horizontal through holes of different heights.

[0028] The filter frame 3 is used to filter the slurry dripping from the wax mold assembly. The filtered slurry falls into the material collection tank 1. The filter frame 3 includes a stainless steel filter screen and a rectangular frame surrounding the stainless steel filter screen. The stainless steel filter screen is a 100-mesh screen, and the mesh size is determined by the maximum mesh size of the abrasive used. A mesh size greater than the maximum mesh size of the abrasive can effectively filter the abrasive particles that fall off the assembly. One end of the rectangular frame is connected to a ring 11 that is fitted onto the outer side of the bottom of the positioning post 10. A screw that mates with the positioning post 10 passes through one side wall of the ring 11. The ring 11 and the filter frame 3 correspond to the bottom of the positioning post 10. The filter frame 3 is fixed with screws. Removing the screws allows the filter frame 3 to move upward and be removed from the positioning post 10. The bottom of the positioning post 10 has a through hole for screw engagement. In some embodiments, the bottom of the positioning post 10 is provided with an internal thread hole for screw engagement.

[0029] The filter rack 3 can filter out sand particles and other blocky impurities that fall off the wax mold assembly rack, ensuring the viscosity and cleanliness of the slurry.

[0030] The support rod 4 rises and falls above the bottom movable frame 2. Specifically, the support rod 4 includes a lifting tube 42 sleeved on the outside of the positioning post 10 and a hexagonal threaded sleeve 41 connected to the upper end of the lifting tube 42. The lifting tube 42 has several transverse through holes of different heights, and a pin that cooperates with the positioning post 10 for positioning passes through the lifting tube 42. The inner thread hole of the hexagonal threaded sleeve 41 is horizontal, and the hexagonal threaded sleeve 41 has a traditional nut structure.

[0031] After the through holes on the lifting tube 42 correspond to the through holes of different heights on the positioning post 10, the height of the lifting tube 42 can be adjusted by passing a pin through the lifting tube 42 and the positioning post 10. The height of the support rod 4 can be adjusted at different heights, thereby adjusting the height of the upper wax model module. This can meet the requirements of different sizes of wax model modules for coating, making it more versatile.

[0032] One end of the upper rotating frame 5 is rotatably connected to the upper end of the support rod 4; the upper rotating frame 5 is used to support the wax film module. Specifically, the upper rotating frame 5 has a U-shaped structure. A rotating shaft 12 is connected to the outer side of the middle part of the upper rotating frame 5. The rotating shaft 12 passes through the hexagonal threaded sleeve 41 and rotates inside the hexagonal threaded sleeve 41. The end of the rotating shaft 12 is provided with a through hole for a cotter pin to pass through. The cotter pin is used to prevent the rotating shaft 12 and the upper rotating frame 5 from falling off. The upper rotating frame 5 can be removed by removing the cotter pin.

[0033] The core rod 15 is connected to the wax mold assembly and rotatably connected to the upper rotating frame 5, positioning the wax mold assembly above the filter frame 3. The core rod 15 is made of stainless steel and passes through the wax mold assembly. The wax mold assembly includes a wax mold runner plate 6 and a wax mold. The core rod 15 passes through the wax mold runner plate 6, with both ends of the core rod 15 extending out of the wax mold runner plate 6. Both ends of the core rod 15 are equipped with rings 16.

[0034] The upper rotating frame 5 has corresponding arc grooves 13 at both ends supporting the ends of the core rod 15. Arc-shaped buckles 14 are hinged to the upper rotating frame 5 at the corresponding arc grooves 13. The gap between the buckles 14 and the arc grooves 13 surrounds the core rod 15 and supports its rotation. One end of the buckle 14 is hinged to the upper rotating frame 5, and the other end is detachably connected to the upper rotating frame 5 via a pin or screw. When the buckle 14 is open, the core rod 15 and the wax model assembly can be placed and removed. When the buckle 14 is closed, the core rod 15 and the wax model assembly can rotate. The ring 16 prevents the core rod 15 and the wax model assembly from falling off.

[0035] The core rod 15 can support the wax pattern module to rotate 360° in one direction, and the hexagonal threaded sleeve 41 can support the rotating shaft 12, the upper rotating frame 5, and the wax pattern module to rotate 360° in another direction. This fully meets the rotation requirements of the coating at different angles, improves the quality and efficiency of the coating, and ensures the quality of the castings.

[0036] First, adjust the height of the support rod 4 according to the size of the wax model assembly, and fix the height of the support rod 4 with a pin. Place the core rod 15 of the wax model assembly into the arc groove 13 on the upper rotating frame 5, and lock it with the buckle 14. Then manually rotate the ring 16 of the core rod 15 of the wax model assembly, first rotating in one direction until the coating is even in this direction, then rotate the upper rotating frame 5 to rotate and apply coating in this direction. After coating is completed, control the material by rotating and controlling the material as described above. After controlling the material, move it to the sanding station for sanding. After sanding is completed, open the buckle 14 and place the wax model assembly on the drying rack.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

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