Large thin-walled wax pattern blow drying barrel

Abstract

This invention discloses a large, thin-walled wax model drying barrel, belonging to the technical field of investment casting equipment. It solves the problem that when using existing wax model drying equipment, the uneven distribution of air velocity on the wax model surface leads to insufficient drying in some areas while other areas may be damaged by excessive airflow. Inefficient airflow not only prolongs drying time but may also affect the drying quality of the wax model. The large, thin-walled wax model drying barrel of this invention includes a barrel body; a bottom drying device is provided inside the barrel body; the bottom drying device includes a bottom air jet pipe; the bottom air jet pipe has multiple air nozzles that can rotate 360°; one end of the bottom air jet pipe penetrates the barrel wall and extends outside the barrel. This invention enables uniform and efficient drying of large, thin-walled wax models.

Description

Technical Field

[0001] This invention relates to the field of investment casting equipment technology, and in particular to a large thin-walled wax pattern drying barrel. Background Technology

[0002] Existing automated wax model cleaning lines generally include cleaning equipment and drying equipment. The drying equipment is mainly used to remove moisture or residual cleaning agent from the surface of the wax model after cleaning, ensuring the stability and quality of the wax model in subsequent processing.

[0003] Existing drying equipment suffers from low airflow efficiency, especially for thin-walled and fragile wax models. These models typically rely on air nozzles for drying, but these nozzles have limited airflow and velocity, resulting in uneven air distribution and unsatisfactory drying. Due to nozzle structure or layout issues, airflow velocity may be unevenly distributed across the wax model surface, leading to under-drying in some areas while other areas may be damaged by excessive airflow. Inefficient airflow not only prolongs drying time but can also negatively impact the drying quality of the wax model. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide a large thin-walled wax mold drying barrel to solve the technical problem that when using existing wax mold drying equipment, the wind speed is unevenly distributed on the surface of the wax mold, resulting in some areas of the wax mold being under-dried while other areas are damaged due to excessive blowing. Inefficient blowing not only prolongs the drying time but may also affect the drying quality of the wax mold.

[0005] The objective of this invention is mainly achieved through the following technical solutions:

[0006] The present invention provides a large thin-walled wax model drying barrel, which includes a drying barrel body 311; a bottom drying device is provided inside the drying barrel body 311; the bottom drying device includes a bottom air pipe 301; the bottom air pipe 301 is provided with a plurality of air nozzles 302 that can rotate 360°; one end of the bottom air pipe 301 penetrates the barrel wall and extends out of the barrel.

[0007] In one possible design, the bottom jet pipe 301 has a nozzle air inlet 303 at one end that penetrates the barrel wall, and the nozzle air inlet 303 is connected to the first air source.

[0008] In one possible design, the drying barrel body 311 is also provided with a side wall drying device; the side wall drying device includes a first air storage square tube 307, a second air storage square tube, a first air knife 304 and a second air knife; the first air storage square tube 307 and the second air storage square tube are both arranged along the axial direction of the drying barrel body 311 and are located outside the barrel body; the first air knife 304 and the second air knife are both arranged along the axial direction of the drying barrel body 311 and are both located inside the barrel body.

[0009] In one possible design, both the first air knife 304 and the second air knife are hollow rod-shaped.

[0010] In one possible design, the first air knife 304 includes a first air knife rod, the second air knife includes a second air knife rod, both the first and second air knife rods contain high-pressure chambers, and the nozzles of the first and second air knife rods are both air outlet gaps along the length direction of the corresponding air knife rods.

[0011] In one possible design, the first gas storage square tube 307 and the second gas storage square tube are provided with multiple straight connectors 308.

[0012] In one possible design, the first air knife 304 and the second air knife are provided with multiple threaded elbow joints 305; the number of straight joints 308 and the number of threaded elbow joints 305 are equal and their positions correspond.

[0013] In one possible design, the straight connector 308 and the threaded elbow connector 305 are connected by a connecting air pipe 306 that penetrates the barrel wall.

[0014] In one possible design, the first gas storage square tube 307 is connected to the second gas source through the first air inlet 309; the second gas storage square tube is connected to the second gas source through the second air inlet 310.

[0015] The present invention also provides an automatic wax model cleaning system, which includes the aforementioned drying drum; it further includes a robotic arm, a cleaning unit, and a rinsing unit; wherein the cleaning unit, the rinsing unit, and the drying drum are all arranged in a ring with equal radii around the robotic arm.

[0016] The present invention also provides an automatic cleaning method for wax molds, using the above-mentioned wax mold cleaning system.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] (1) The present invention provides a bottom air pipe 301 at the bottom of the drying barrel body 311 and installs multiple (e.g., three) air nozzles 302 that can be adjusted in 360° on the bottom air pipe 301, so that air can be blown from the bottom of the drying barrel upwards, which can fully dry the wax mold inside.

[0019] (2) The wax mold drying equipment provided by the present invention is suitable for thin-walled wax molds, effectively improving the efficiency and effect of the drying equipment, so as to ensure that the airflow is evenly distributed on the surface of the wax mold and meet the drying requirements of the wax mold.

[0020] (3) The present invention forms an air curtain by setting a first air knife 304 and a second air knife on the side wall of the drying barrel. At the same time, a jet nozzle 302 that can rotate 360° is set at the bottom of the drying barrel body 311 to spray air upward. Under the combined action of the two, multi-angle blowing and all-round drying can be achieved in the drying barrel body 311, so that the moisture on the surface of the wax model can evaporate quickly and the drying effect is guaranteed.

[0021] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0022] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0023] Figure 1 This is a general layout diagram of the automatic wax mold cleaning system of the present invention;

[0024] Figure 2 This is a schematic diagram of the cleaning tank structure of the present invention, which shows a cross-sectional view of the bubbling device inside the tank;

[0025] Figure 3 This is a side view of the cleaning tub of the present invention;

[0026] Figure 4 This is an exploded view of the cleaning tank filter tank and filter material of the present invention;

[0027] Figure 5 This is a schematic diagram of the rinsing tank structure of the present invention, which shows a cross-sectional view of the bubbling device inside the tank.

[0028] Figure 6 This is a schematic diagram of the drying barrel structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the drying barrel structure of the present invention (the barrel wall is hidden).

[0030] Figure label:

[0031] 000-Robot arm; 100-Washing tank; 200-Rinsing tank; 300-Drying tank; 101-Main tank body; 102-Auxiliary tank body; 103-Double-ring jet ring; 104-Compressed air inlet; 105-Inlet pipe; 106-Circulation pump; 107-Water inlet pipe; 108-Return water pipe; 109-First water inlet pipe interface; 110-Second water inlet pipe interface; 111-Overflow port; 112-Filter tank; 113-Multi-stage filtration structure; 114-Auxiliary tank body liquid level pipe; 2 01-Rinse tank body; 202-Rinse tank double-ring air jet ring; 203-Air inlet of air jet ring; 204-Air inlet pipe; 205-Rinse liquid drain outlet; 206-Rinse tank liquid level pipe; 301-Bottom air jet pipe; 302-Air jet nozzle; 303-Air inlet of nozzle; 304-Air knife; 305-Threaded elbow joint; 306-Connecting air pipe; 307-Air storage square pipe; 308-Straight connector; 309-First air inlet; 310-Second air inlet; 311-Drying tank body. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0033] This invention provides a drying barrel for large, thin-walled wax molds, such as... Figure 6 and Figure 7 As shown, the drying barrel 300 includes a drying barrel body 311; a bottom drying device is provided on the drying barrel body 311; the bottom drying device includes a bottom air pipe 301; the bottom air pipe 301 is provided with a plurality of air nozzles 302 that can rotate 360°; one end of the bottom air pipe 301 penetrates the barrel wall and extends out of the barrel, and the end of the bottom air pipe 301 that penetrates the barrel wall is provided with a nozzle air inlet 303, which is connected to a first air source.

[0034] Compared with the prior art, the present invention provides a bottom air jet pipe 301 at the bottom of the drying barrel body 311 and installs multiple (e.g., three) air jet nozzles 302 that can be adjusted in 360° on the bottom air jet pipe 301, so that air is blown from the bottom of the drying barrel upwards, which can fully dry the wax mold inside.

[0035] To further improve drying efficiency and achieve all-around drying, the drying barrel body 311 of the present invention is also provided with a side wall drying device; the side wall drying device includes a first air storage square tube 307, a second air storage square tube, a first air knife 304, and a second air knife; the first air storage square tube 307 and the second air storage square tube are both arranged along the axial direction of the drying barrel body 311 and are located outside the barrel body; the first air knife 304 and the second air knife are both arranged along the axial direction of the drying barrel body 311 and are both located inside the barrel body; the first air storage square tube 307 is used to supply air to the first air knife 304; the second air storage square tube is used to supply air to the second air knife.

[0036] Specifically, the first air knife 304 and the second air knife have the same structure and are symmetrically arranged on the inner side wall of the drying barrel 311. The first air storage square tube 307 and the second air storage square tube are symmetrically arranged on the outer side wall of the drying barrel 311. The first air storage square tube 307 is used to supply air to the first air knife 304. The second air storage square tube is used to supply air to the second air knife. Both the first air knife 304 and the second air knife are hollow rods. The first air knife 304 includes a first air knife rod, and similarly, the second air knife includes a second air knife rod. Both the first air knife rod and the second air knife rod contain high-pressure chambers. The nozzles of the first air knife rod and the second air knife rod form a continuous air outlet gap along the length of the air knife rod. The working process is as follows: the compressed air is further compressed in the high-pressure chamber and passes through a narrow and thin nozzle, which forms a continuous air outlet gap. Under the action of the nozzle, the airflow forms a uniform airflow sheet along the length of the air knife; the compression ratio of the first air knife rod and the second air knife rod to the high-pressure airflow is 40-45:1, which minimizes the airflow velocity loss and maximizes the pressure.

[0037] When the rinsed wax mold is dried, the gas supplied by the gas source enters the corresponding high-pressure gas chamber through the first gas storage square tube 307 and the second gas storage square tube respectively. At this time, the first air knife 304 and the second air knife can both generate a high-intensity, uniform air curtain.

[0038] Compared with the prior art, the present invention forms an air curtain by setting a first air knife 304 and a second air knife on the side wall of the drying barrel. At the same time, a jet nozzle 302 that can rotate 360° is set at the bottom of the drying barrel body 311 to spray air upward. Under the combined action of the two, multi-angle air blowing and all-round drying can be achieved inside the drying barrel body 311, so that the moisture on the surface of the wax model can evaporate quickly and ensure the drying effect.

[0039] To enable the aforementioned gas storage square tube to supply gas to its corresponding air knife, the first gas storage square tube 307 and the second gas storage square tube of the present invention are provided with a plurality of straight connectors 308; the first air knife 304 and the second air knife are provided with a plurality of threaded elbows 305; the number of straight connectors 308 and the threaded elbows 305 are equal and their positions correspond; the straight connectors 308 and the threaded elbows 305 are connected by a connecting air pipe 306 that penetrates the barrel wall; in addition, the first gas storage square tube 307 of the present invention is connected to a second air source through a first air inlet 309; the second gas storage square tube is connected to a second air source through a second air inlet 310.

[0040] Specifically, such as Figure 7 As shown, the first air storage square tube 307 and the second air storage square tube of the present invention have the same structure and are symmetrically arranged, with seven straight connectors 308 evenly distributed along their respective height directions; correspondingly, the first air knife 304 and the second air knife have the same structure and are symmetrical about the central axis of the drying barrel body 311, with seven threaded elbows 305 evenly distributed along their respective height directions; the seven straight connectors 308 outside the barrel correspond to the seven threaded elbows 305 inside the barrel, and the two are connected by a connecting air pipe 306 that penetrates the barrel wall; the first air storage square tube 307 of the present invention is connected to the second air source through the first air inlet 309; the second air storage square tube is connected to the second air source through the second air inlet 310; the first air storage square tube 307 and the second air storage square tube can play the role of uniform air volume and storing a portion of the air volume.

[0041] It should be explained that the bottom drying device and the side wall drying device of the present invention use different air sources. The purpose is to adjust the air volume of the bottom jet pipe 301, the first air knife 304 and the second air knife respectively to achieve the best drying effect.

[0042] The present invention also provides an automatic wax mold cleaning system, such as Figure 1 As shown, the automatic wax model cleaning system includes the aforementioned drying tank; it also includes a robotic arm 000, a cleaning unit, and a rinsing unit; wherein the cleaning unit, rinsing unit, and drying tank are all arranged in a ring with equal radii around the robotic arm. The cleaning unit includes a cleaning tank 100, a filtering device, and a circulation device; the cleaning tank 100 includes a main tank body 101 and an auxiliary tank body 102; the main tank body 101 and the auxiliary tank body 102 are arranged adjacent to each other and their bottoms are connected by a circulation device, and an overflow port 111 is provided at the interface between their upper ends; the filtering device is located above the auxiliary tank body 102 and at the overflow port 111; the cleaning liquid in the main tank body 101 flows into the filtering device through the overflow port 111, and after filtration, flows into the auxiliary tank body 102.

[0043] Specifically, the cleaning tank 100 of the present invention is used to clean the wax debris and release agent on the wax model. During the cleaning process, wax debris from the surface of the wax model will be mixed into the cleaning liquid and float on the surface of the cleaning liquid, affecting the subsequent cleaning effect. It is necessary to clean the cleaning liquid in time. The present invention uses a circulation device to filter and recycle the cleaning liquid. Therefore, the cleaning tank 100 of the present invention is designed with a main tank body 101 and an auxiliary tank body 102. The main tank body 101 and the auxiliary tank body 102 are provided with a filtration device at the upper end, and the two are connected to a circulation device at the lower end.

[0044] Compared with the prior art, firstly, the present invention adopts a circular layout with the robotic arm 000 as the center of the circle, which can maximize the space utilization rate, not only saving the floor space, but also facilitating repeated cleaning operations and flexible movement of the wax model.

[0045] Secondly, by introducing a robotic arm 000, this invention can achieve full-process automation, including cleaning, rinsing, and drying operations of wax molds, resulting in high cleaning efficiency. The robotic arm 000 can also automate the loading and unloading of wax molds and the transfer of wax molds between processes. It can rotate and move within each cleaning device, further improving the cleaning and drying effects, while greatly reducing the labor intensity of workers, increasing production efficiency, and ensuring the stability of the cleaning effect.

[0046] Furthermore, by incorporating a filtration device and a circulation device, the present invention enables the filtration and recycling of the cleaning solution.

[0047] It should be noted that the robotic arm 000 of this invention is a standard product sourced from external suppliers, and its specific structure and working principle will not be described in detail here.

[0048] To achieve the circulation of the cleaning solution, such as Figure 2 and Figure 3 As shown, the circulation device of the present invention includes a circulation pump 106, an inlet pipe 107, and a return pipe 108; the bottom of the main tank 101 is provided with a first inlet pipe interface 109, and the bottom of the auxiliary tank 102 is provided with a second inlet pipe interface 110; the circulation pump 106 is connected to the main tank 101 through the return pipe 108 connected to the first inlet pipe interface 109, and the circulation pump 106 is connected to the auxiliary tank 102 through the inlet pipe 107 connected to the second inlet pipe interface 110.

[0049] Specifically, the circulation device is used to realize the recycling of cleaning fluid. When the robot arm 000 grabs the wax model and enters the main body 101 of the cleaning tank 100, the robot arm 000 will drive the wax model to rotate and move to achieve a complete cleaning effect. After cleaning, wax debris on the surface of the wax model will be mixed in the cleaning fluid. The floating cleaning fluid surface in the main body 101 will affect the subsequent cleaning effect. With a pre-designed liquid level standard, after the wax model is immersed, the cleaning liquid in the main tank 101 overflows into the auxiliary tank 102 through the overflow port 111 at the interface between the main tank 101 and the auxiliary tank 102. A filter device is provided above the auxiliary tank 102 to filter the residue in the cleaning liquid overflowing from the main tank 101. The clean cleaning liquid flows into the auxiliary tank 102. Since the bottom of the auxiliary tank 102 and the bottom of the main tank 101 are connected by a circulation pump 106, an inlet pipe 107, and a return pipe 108, the clean cleaning liquid can be sent back to the main tank 101, thus achieving the circulation and filtration of the cleaning liquid.

[0050] Compared with the prior art, the present invention can remove impurities in the cleaning solution in a timely manner by setting up a filtration device, ensuring that the cleaning solution always remains clean; and can realize the recycling of the cleaning solution by setting up a circulation device.

[0051] It should be noted that, as Figure 2 As shown, an auxiliary tank liquid level pipe 114 is installed on the outer side wall of the auxiliary tank 102 of the present invention.

[0052] Compared with the prior art, the present invention can display the liquid level of the auxiliary tank 102 in real time by installing an auxiliary tank liquid level pipe 114 on the outer side wall of the auxiliary tank 102; when the liquid level is lower than the marked minimum liquid level, the water level does not reach the overflow port 111 after the wax model is immersed, that is, it is impossible to form a circulation between the main tank 101 and the auxiliary tank, and at this time, cleaning fluid needs to be injected.

[0053] In order to filter cleaning solutions containing impurities such as wax residue, such as Figure 4 As shown, the filtration device of the present invention includes a filter tank 112; the filter tank 112 is hung at the overflow port 111 and located above the auxiliary tank body 102; the filter tank 112 is provided with a multi-stage filtration structure 113, which is used to filter out wax debris in the cleaning fluid.

[0054] Specifically, the filter tank 112 is hung at the overflow port 111, and the outline of the filter tank 112 fits the overflow port 111. The bottom of the filter tank 112 is a perforated plate, and a multi-stage filtration structure 113 is set inside the filter tank 112. The multi-stage filtration structure 113 is used to ensure efficient water purification. The multi-stage filtration structure 113 consists of a primary filtration layer, a secondary filtration layer, and a fine filtration layer from top to bottom. Each filtration layer uses different filter materials. The primary filtration layer uses large-particle activated carbon to intercept larger suspended solids and impurities. The secondary filtration layer uses medium-sized ceramic particles to further remove small particles and organic matter in the water. The fine filtration layer uses high-density filter cotton to filter out small particles and bacteria in the water, ensuring water purification.

[0055] It should be noted that the thickness of the primary filter layer, intermediate filter layer, and fine filter layer decreases sequentially. This design ensures sufficient filtration area and capacity while effectively reducing water flow resistance and improving filtration efficiency. The advantage of this thickness configuration is that the primary filter layer can withstand a greater load, extending the overall service life of the filtration system; the intermediate filter layer acts as a bridge between the primary and secondary filters, further purifying the water; and the fine filter layer, through its precise filtration capabilities, ensures a high standard of final effluent quality. In summary, this invention employs a multi-stage filtration structure and its respective filter materials to effectively intercept and remove pollutants of different sizes, improving the efficiency and effectiveness of water purification.

[0056] To ensure the filtration effect, the present invention has a sensor at the bottom of the filter tank 112, which can detect the water quality, flow rate and pressure of the cleaning liquid.

[0057] The rinsing unit of the present invention includes a rinsing tank body 201; a rinsing tank liquid level pipe 206 is provided on the outer side of the rinsing tank body 201, and a rinsing liquid drain outlet 205 is provided at the bottom; the function of the rinsing tank liquid level pipe 206 is to flush away the cleaning agent.

[0058] It should be noted that the automatic wax mold cleaning system of the present invention also includes a compressed air supply unit; such as Figure 2 As shown, both the main body 101 of the washing tub 100 and the bottom of the rinsing tub 201 are equipped with bubbling devices; the bubbling device in the main body 101 includes a double-ring air jet ring 103; the bubbling device in the rinsing tub 201 includes a double-ring air jet ring 202; the double-ring air jet ring 103 and the double-ring air jet ring 202 have the same structure. The bottom of the double-ring air jet ring 103 is provided with a compressed air inlet 104, which is connected to a compressed air supply unit via a compressed air inlet pipe 105.

[0059] Specifically, the bubbling device inside the main tank is a double-ring jet ring 103. The double-ring jet ring 103 is installed at the bottom of the main tank 101 and the rinsing tank 201 by means of spot welding or other connections. The double-ring jet ring 103 is connected to the compressed air supply unit through a compressed air inlet 104 and a compressed air inlet pipe 105. The bottom of the double-ring jet ring 202 inside the rinsing tank is provided with a jet ring inlet 203, which is connected to the air source through an inlet pipe 204. During rinsing, the bubbling device is turned on, and the double-ring jet ring 103 can continuously blow out bubbles. Due to density, the bubbles will automatically move upward, and the number and density of bubbles can be adjusted by adjusting the compressed air pressure, thereby using compressed gas to boil and stir the cleaning liquid. The double-ring jet ring 103 can achieve complete rinsing without dead corners. After rinsing, the rinsing liquid is discharged from the rinsing tank 201 through the rinsing liquid drain outlet 205.

[0060] Existing technologies cannot achieve complete cleaning without any blind spots, resulting in poor cleaning effects. Compared with existing technologies, the bubbling device of this invention can use compressed gas to boil and stir the cleaning liquid, producing gentle bubbles that will not cause the wax model to break or deform. The circulation device ensures that the cleaning liquid remains clean at all times. The combination of these two technologies ensures that the wax model is cleaned without any blind spots or dirt residue, resulting in a high degree of cleanliness.

[0061] Existing technologies use high-pressure water pipes to clean wax models in cleaning devices. The advantage of this method is that it can create strong eddies, effectively cleaning hard-to-reach corners and crevices. However, the cleaning target of this invention is large, thin-walled wax models, and existing methods are not suitable for the fragile large, thin-walled wax models of this invention. Therefore, this invention provides a method with a double-ring air jet ring 103 for bubbling cleaning. The bursting of bubbles and the resulting force enhance the stirring and cleaning ability of the cleaning fluid, resulting in a gentler and more uniform cleaning that will not damage the wax model.

[0062] like Figure 2 and Figure 5 As shown, the double-ring jet ring 103 of the present invention includes an inner jet ring and an outer jet ring; the outer jet ring is sleeved on the outside of the inner jet ring, and the two are arranged concentrically; the diameter of the double-ring jet ring 103 matches the diameter of the barrel body; multiple air pipes are provided between the outer jet ring and the inner jet ring; jet nozzles are evenly distributed on the outer jet ring and the inner jet ring; the compressed air inlet 104 is provided at the bottom of the outer jet ring.

[0063] Compared with the prior art, the present invention, by setting the bubbling device into a double-ring jet ring 103 structure, can ensure that the bubbling generated in the main tank 101 or the rinsing tank 201 is more uniform, thereby fully boiling and stirring the cleaning liquid or rinsing liquid; in addition, the double-ring jet ring 103, together with the robotic arm 000, can grasp the wax model and perform some actions in the cleaning tank 100, so that the wax model can be cleaned or rinsed completely without dead corners.

[0064] In summary, this invention, by incorporating a bubbling device within the cleaning tank 100, utilizes compressed gas to tumble and agitate the cleaning fluid. Compressed air is ejected through the nozzles of the bubbling device, generating bubbles that cause the liquid within the main tank 101 to tumble. This ensures the cleaning fluid completely covers every corner of the wax model, accelerating the removal of wax debris and other impurities from the model's surface, achieving a thorough cleaning. Compared to static cleaning, this invention improves cleaning efficiency. Compared to existing ultrasonic cleaning methods, this invention, while ensuring the agitation of the cleaning fluid, prevents thin-walled wax models from cracking or deforming. Furthermore, the cleaning fluid within the cleaning tank 100 is filtered and circulated through a filtration and circulation device, ensuring its cleanliness and further enhancing the cleaning effect.

[0065] like Figure 5 As shown, the present invention provides a bubbling device in the rinsing tank 200, and the clean water in the rinsing tank 200 can play a dilution and washing role, diluting and washing away the residual cleaning agent on the surface of the wax model, thus ensuring the cleanliness of the wax model.

[0066] The rinsing tank body 201 of the present invention is equipped with a rinsing tank liquid level pipe 206 on the side wall, which can display the liquid level in the rinsing tank body 201 in real time. When the liquid level is lower than the marked minimum liquid level, the water cannot submerge the wax model after it is immersed, that is, the wax model cannot be completely rinsed. At this time, water needs to be injected.

[0067] This invention also provides an automatic wax model cleaning method, employing the aforementioned automatic wax model cleaning system; it is mainly used for cleaning large, thin-walled wax models, and the cleaning method includes the following steps:

[0068] Step 1: Use the robotic arm 000 to put the wax model into the main body 101 of the cleaning tank 100, and at the same time turn on the bubbling device, the filtering device and the circulation device to clean the wax model in all directions with the cleaning fluid.

[0069] Step 2: After cleaning, use the robotic arm 000 to place the wax model into the rinsing unit for rinsing;

[0070] Step 3: After rinsing, place the wax model into the drying unit to dry it, and finally obtain a clean wax model.

[0071] In step 1 above, after the robotic arm 000 grabs the wax mold and enters the main body 101 of the cleaning tank 100, the robotic arm 000 will drive the wax mold to rotate and move in order to clean it thoroughly.

[0072] In step 1 above, the cleaning fluid in the main tank 101 is bubbled using the double-ring jet ring 103 of the bubbling device.

[0073] In step 1 above, the double-ring jet ring 103 continuously blows air bubbles into the main tank 101. After entering the cleaning fluid, the bubbles automatically move upward, and during their ascent, they boil and stir the cleaning fluid. This invention utilizes the double-ring jet ring 103 to generate bubbles for cleaning the wax mold. The bursting of the bubbles and the resulting force enhance the stirring and cleaning ability of the cleaning fluid, resulting in a gentler and more uniform cleaning effect compared to ultrasonic stirring, without damaging the wax mold.

[0074] In step 1 above, after cleaning is completed, the impurities (wax residue, cleaning agent) in the cleaning solution are filtered by a filtration device.

[0075] In step 1 above, after cleaning is completed, the cleaning solution first enters the filter tank 112 through the overflow port 111. After being processed by the multi-stage filtration structure 113 in the filter tank 112, the clean cleaning solution flows into the auxiliary tank 102.

[0076] In step 1 above, the sensor installed at the bottom of the filter tank 112 is used to detect the water quality, flow rate and pressure of the cleaning fluid.

[0077] In step 1 above, the circulation pump 106 uses the inlet pipe 107 connected to the auxiliary tank 102 and the return pipe 108 connected to the main tank 101 to pump the clean cleaning fluid in the auxiliary tank 102 into the main tank 101, thereby realizing the circulation of the cleaning fluid.

[0078] In step 1 above, the liquid level of the auxiliary tank 102 is checked by the auxiliary tank liquid level pipe 114 installed on the outer wall of the auxiliary tank 102; when the liquid level is lower than the marked minimum liquid level, cleaning fluid is injected.

[0079] In step 2 above, before rinsing the wax model, the double-ring air jet ring 103 of the bubbling device is turned on. After the double-ring air jet ring 103 takes in air through the compressed air inlet 104 at its bottom, it can continuously blow air into the rinsing liquid. After rinsing is completed, the rinsing liquid is discharged from the rinsing tank body 201 through the rinsing liquid drain outlet 205.

[0080] In step 2 above, the present invention uses the bubbles generated by the double-ring jet ring 103 to boil and stir the rinsing liquid, which can achieve complete rinsing without dead corners.

[0081] In step 2 above, the liquid level in the rinsing tank 201 is checked by the rinsing tank level pipe 206 installed on the side wall of the rinsing tank 201. When the liquid level is lower than the marked minimum liquid level, the water cannot submerge the wax model after it is immersed, so the wax model cannot be completely rinsed. At this time, clean water is injected.

[0082] In step 2 above, the purpose of rinsing is to further remove residual cleaning agent and other impurities from the surface of the wax model, ensuring that the surface of the wax model is thoroughly clean. After rinsing, the wax model has no obvious cleaning agent residue or impurities, and its surface smoothness is further improved. Then, the wax model is retrieved by the robotic arm 000, completing the rinsing action of the wax model.

[0083] In step 3 above, after rinsing, the wax model is placed into the drying barrel 311 by the robotic arm 000 for drying. The specific drying process is as follows: first, the air source is connected, including connecting the bottom air jet pipe 301 in the bottom drying device to the first air source, and connecting the first air storage square pipe 307 and the second air storage square pipe in the side wall drying device to the second air source; then, the first air source and the second air source are turned on, and the bottom drying device and the side wall drying device are turned on at the same time.

[0084] In step 3 above, the drying process of the sidewall drying device is as follows: the gas supplied by the second gas source is input into the first gas storage square tube 307 and the second gas storage square tube through the first air inlet 309 and the second air inlet 310 respectively. The gas in the two gas storage square tubes is transported to the high-pressure air chamber of the first air knife 304 and the second air knife through the straight connector 308, the connecting air pipe 306 and the threaded elbow 305. The gas is then ejected at high speed through the air knife holes on the first air knife 304 and the second air knife. After being ejected, the gas generates a high-intensity, uniform air curtain along the length of the air knife.

[0085] In step 3 above, the drying process of the bottom drying device is as follows: the gas provided by the first gas source is delivered through the nozzle inlet 303 to the bottom jet pipe 301 that penetrates the wall of the drying barrel, and is quickly sprayed out through multiple 360° rotatable nozzles 302 in the bottom jet pipe 301.

[0086] In step 3 above, the bottom drying device and the side wall drying device of the present invention can form an all-round drying device. During its operation, the wax mold is rotated by the robot arm 000. With the help of the all-round drying device, the wax mold can achieve a 360° drying effect. Therefore, the present invention can quickly remove most of the residual moisture on the surface of the wax mold, shorten the drying time of the wax mold after cleaning, and ultimately improve production efficiency.

[0087] It is important to emphasize that the large, thin-walled wax models targeted by this invention are extremely fragile and easily broken. The walls or edges of these wax models are very thin, with a thickness of only 0.5 mm at the edges. The wax models themselves have complex structures, are extremely thin, and exhibit curved surfaces. It should be noted that before cleaning, the wax models have an oily and shiny surface. After treatment with the cleaning system and method of this invention, the oiliness is removed, and after rinsing and drying, the surface becomes matte, and the wax model remains undamaged with no cracks at the edges.

[0088] Compared with the prior art, firstly, the present invention uses a bubbling device to tumble and stir the cleaning liquid. Compressed air is sprayed out through the jet nozzle on the bubbling device to generate bubbles, causing the liquid in the main barrel 101 to tumble. This allows the cleaning liquid to completely cover every corner of the wax model, thereby accelerating the removal of wax debris and other impurities from the surface of the wax model and achieving a thorough cleaning effect.

[0089] Secondly, this invention improves cleaning efficiency compared to static cleaning; compared to existing ultrasonic cleaning, this invention prevents thin-walled wax molds from cracking or deforming while ensuring the agitation of the cleaning solution. Simultaneously, the cleaning solution within the cleaning tank 100 is filtered and circulated through a filtration and circulation device, ensuring the cleanliness of the cleaning solution, which further enhances the cleaning effect.

[0090] Furthermore, the bubbling device of the present invention can use compressed gas to boil and stir the cleaning liquid, and the bubbles produced are relatively gentle, which will not cause the wax model to break or deform; the circulation device can ensure that the cleaning liquid is always kept clean. The combination of the two can ensure that the wax model is cleaned without dead corners, without dirt residue, and with high cleaning efficiency.

[0091] Finally, the automatic wax model cleaning method of the present invention can greatly improve the cleaning effect, ensure that there is no dirt residue, and achieve a high degree of cleanliness. The drying unit can dry the water on the surface of the wax model, further ensuring the cleaning effect and realizing efficient and high-quality automated cleaning of wax models.

[0092] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic wax mold cleaning system, characterized in that, It includes a drying drum, a robotic arm, a cleaning unit, and a rinsing unit; the cleaning unit, the rinsing unit, and the drying drum are all arranged in a ring with equal radii around the robotic arm. The drying barrel includes a drying barrel body (311); a bottom drying device is provided inside the drying barrel body (311); the bottom drying device includes a bottom air jet pipe (301); the bottom air jet pipe (301) is provided with a plurality of air jet nozzles (302) that can rotate 360°; one end of the bottom air jet pipe (301) penetrates the barrel wall and extends out of the barrel. The bottom jet pipe (301) has a nozzle air inlet (303) at one end that penetrates the barrel wall, and the nozzle air inlet (303) is connected to the first air source; The drying barrel body (311) is also provided with a side wall drying device; the side wall drying device includes a first air storage square tube (307), a second air storage square tube, a first air knife (304) and a second air knife; the first air storage square tube (307) and the second air storage square tube are both arranged along the axial direction of the drying barrel body (311) and are located outside the barrel body; the first air knife (304) and the second air knife are both arranged along the axial direction of the drying barrel body (311) and are both located inside the barrel body; Both the first air knife (304) and the second air knife are hollow rod-shaped; The first air knife (304) includes a first air knife rod, and the second air knife includes a second air knife rod. Both the first air knife rod and the second air knife rod contain high-pressure chambers, and the nozzles of the first air knife rod and the second air knife rod are both air outlet gaps along the length direction of the corresponding air knife rod. The compressed air is further compressed in the high-pressure chamber and passes through the nozzle, forming a uniform airflow sheet along the length of the air knife.

2. The automatic wax mold cleaning system according to claim 1, characterized in that, The first gas storage square tube (307) and the second gas storage square tube are provided with multiple straight connectors (308).

3. The automatic wax mold cleaning system according to claim 2, characterized in that, The first air knife (304) and the second air knife are provided with multiple threaded elbows (305); the number of straight connectors (308) and threaded elbows (305) are equal and their positions correspond.

4. The automatic wax mold cleaning system according to claim 3, characterized in that, The straight connector (308) and the threaded elbow connector (305) are connected by a connecting air pipe (306) that penetrates the barrel wall.

5. An automatic cleaning method for wax molds, characterized in that, The automatic wax model cleaning system according to any one of claims 1 to 4 is adopted.

Images