Cutting waste cleaning device for false tooth carving machine and false tooth carving machine

Abstract

The cutting waste cleaning device comprises a processing cavity, a waste liquid collecting box and a dust remover, the bottom of the processing cavity is provided with a liquid discharging port and a dust removing port, and the liquid discharging port and the dust removing port are used for discharging liquid and scraps in a wet processing mode or discharging dust in a dry processing mode respectively. The liquid outlet is connected with a waste liquid collecting box, the dust removing opening is connected with a dust remover, and negative pressure is formed in the pipeline to extract dust when the dust remover operates; the device realizes self-adaptive switching of dry and wet modes based on a negative pressure adsorption principle. In the wet machining mode, cutting fluid and chippings are rapidly discharged through liquid level difference and negative pressure suction, and a dust removal opening is closed to prevent liquid from flowing backwards; and in the dry processing mode, the dust remover guides dust to be discharged through dynamic negative pressure, and a liquid outlet is closed to prevent dust from caking.

Description

Technical Field

[0001] This utility model relates to the field of dental prosthesis processing technology, and in particular to a cutting waste cleaning device for a dental prosthesis carving machine and a dental prosthesis carving machine. Background Technology

[0002] In the field of digital denture processing, denture engraving machines precisely shape materials such as ceramics and resins through milling and grinding. If waste generated during processing (such as cutting fluid-mixed debris and dry dust) cannot be discharged in a timely manner, it will directly affect processing quality and equipment stability. For example, in wet mode, if cutting fluid and debris remain in the processing chamber and adhere to the tool or workpiece surface, it will increase surface roughness; in dry mode, dust accumulation can easily interfere with the optical positioning system, reducing engraving accuracy. Alternatively, liquid residue can corrode precision transmission components (such as linear guides and spindle motors), and dust intrusion will accelerate mechanical wear and even clog pneumatic pipelines. Furthermore, if resin debris and ceramic powder from the denture material diffuse with the liquid or air, it will pollute the operating environment and threaten the health of operators. Therefore, a waste discharge device is one of the core components for ensuring the efficient operation of denture engraving machines and extending their lifespan.

[0003] Utility model patent CN5656804U discloses a dust removal device for a fully automatic dental prosthesis carving machine, such as... Figure 1 As shown, it includes a placement cylinder 4 for placing the clamp 5, a blowing mechanism 1 for separating waste and dentures, and a collection mechanism 6 for collecting waste. The blowing mechanism 1 includes the placement cylinder 4, which is a cylindrical shape with one end sealed and the other end open. The clamp 5 is fixedly installed inside the placement cylinder 4. The collection mechanism 6 includes a conveying pipe 62 connected to the lower end of the placement cylinder 4, a collection box 61 connected to the end of the conveying pipe 62 away from the placement cylinder 4, a filter plate 66 located inside the collection box 61, a connecting pipe 63 connected to the collection box 61, an air inlet pipe 64 connected to the end of the connecting pipe 63 away from the collection box 61, and an air pump 65 connected to the end of the air inlet pipe 64 away from the connecting pipe 63.

[0004] from Figure 1 It is not difficult to see that the device is large and complex in structure, and obviously cannot be integrated into the dental prosthesis carving machine. Therefore, the dust removal device can only be used for dry processing dust removal, and its integration level is insufficient.

[0005] The utility model patent with authorization announcement number CN0261551U discloses an automatic chip removal mechanism for a dental prosthesis carving machine, such as... Figure 2As shown, the outer wall of the dental prosthesis carving machine 1 is provided with a storage mechanism 3, which stores powder and debris from all-ceramic dentures. The storage mechanism 3 includes a water tank 31, which is divided into an upper cylinder and a lower cylinder. The upper cylinder is threaded through the top opening of the lower cylinder. The water tank 31 is fixedly mounted on the outer wall of the dental prosthesis carving machine 1 by bolts. A water injection valve is fixedly installed on the outer wall of the water tank 31. Several baffles 32 are fixedly installed in the water tank 31 from top to bottom, and the baffles 32 have honeycomb-shaped holes. A one-way valve 33 is fixedly installed at the center of the bottom of the water tank 31.

[0006] Compared to the dust removal device disclosed in CN5656804U, the automatic chip removal mechanism disclosed in CN0261551U has a higher degree of miniaturization and can be externally mounted on the outer wall of the dental prosthesis engraving machine. However, it still has the problems of insufficient integration and only being able to perform dry processing dust removal.

[0007] This shows that the existing technology still needs to be improved and perfected. Utility Model Content

[0008] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a cutting waste cleaning device for a dental prosthesis carving machine and a dental prosthesis carving machine, which aims to solve the problems that the existing chip removal device cannot be integrated into the dental prosthesis carving machine, the degree of integration is insufficient and it can only perform single chip removal.

[0009] The technical solution of this utility model is as follows:

[0010] A device for cleaning cutting waste from a dental prosthesis engraving machine, comprising:

[0011] The processing chamber has a drain port and a dust removal port at its bottom. The drain port is used to discharge liquid and mixed debris in wet mode, and the dust removal port is used to discharge dust in dry mode. The drain port and the dust removal port are not opened at the same time.

[0012] The waste liquid collection tank is connected to the drain outlet via a drain pipe.

[0013] The dust collector is connected to the dust collection port through a dust collection pipe. When the dust collector is running, it creates a negative pressure in the dust collection pipe to extract dust.

[0014] The advantages of the above solution are as follows: This utility model is based on the principle of negative pressure adsorption in fluid mechanics. It achieves adaptive switching between wet and dry modes through a waste cleaning device integrated into the dental prosthesis carving machine. In wet processing mode, the cutting fluid and mixed debris are efficiently discharged by utilizing the liquid level difference between the drain pipe and the waste liquid collection tank and negative pressure suction (based on the principle of fluid continuity in Bernoulli's equation). At the same time, the backflow of liquid is prevented by sealing the dust collection port. In dry processing mode, the dust collector, based on the gas-solid two-phase flow separation theory, generates dynamic negative pressure to discharge dust along the dust collection pipe. The drain port is closed simultaneously to prevent dust agglomeration and blockage. The physical isolation design of the two modes (based on the theory of maximizing the separation efficiency of wet and dry waste) can collect liquid-debris mixtures and ultrafine dust in a targeted manner, which significantly reduces the risk of residual pollution inside the equipment. Because the modular integrated design can be directly embedded into the existing dental prosthesis carving machine without the need for complex external pipelines, it also achieves the effects of extended maintenance cycle and energy saving.

[0015] In a further preferred embodiment, the cutting waste cleaning device further includes a liquid circulation mechanism, which includes a filter and a water pump. The filter is located in the upper part of the waste liquid collection tank to ensure the cleanliness of the cutting fluid in the waste liquid collection tank. The water pump is used to extract the cutting fluid from the waste liquid collection tank and transport it to the cutting fluid nozzle in the machining cavity.

[0016] The above solution has the following advantages: the liquid circulation mechanism is based on the theory of fluid circulation and reuse and the principle of solid-liquid separation. It purifies the cutting fluid in the waste liquid collection tank through the filter element to ensure the cleanliness of the cutting fluid. The water pump delivers the filtered cutting fluid to the nozzle of the machining chamber through a closed-loop pipeline, forming a sustainable cooling and lubrication system. This improves the utilization rate of the cutting fluid and reduces the frequency of external cutting fluid replenishment and the cleaning frequency of the waste liquid collection tank, thereby improving the working efficiency of the dental prosthesis engraving machine.

[0017] In a further preferred embodiment, the drain port is located at the center of the bottom of the processing cavity, and all four sides of the drain port are provided with inclined surfaces whose height gradually increases towards the side wall.

[0018] The advantages of the above solution are as follows: the central layout of the drain port, combined with the structural design of the surrounding inclined surfaces (based on the theory of liquid surface tension and gravity flow), can adapt to the characteristics of the high spray force of cutting fluid during the wet processing of the dental prosthesis engraving machine. Under the high impact flow state, it effectively guides the cutting fluid and mixed debris to converge towards the drain port, avoiding debris retention at the bottom of the processing cavity due to liquid splashing or turbulence. The gradually rising inclined surface design optimizes the liquid flow path, allowing the cutting fluid to quickly return to the drain port under high-speed jet action, thereby improving discharge efficiency and reducing the risk of drain pipe blockage. In addition, this design reduces the contamination of the processing cavity caused by cutting fluid residue, reduces the frequency of manual cleaning, and further improves the automation level and maintenance convenience of the dental prosthesis engraving machine.

[0019] In a further preferred embodiment, the two inclined surfaces set along the long side of the dental prosthesis carving machine are designated as first inclined surfaces, and the included angle between the two first inclined surfaces is between 142° and 150°.

[0020] The above solution achieves the following effect: the angle between the first inclined surfaces is set within the range of 142° to 150° (based on solid-liquid-gas three-phase flow behavior analysis), optimizing the fluid and dust discharge path at the bottom of the machining cavity. This allows the cutting fluid and mixed debris to quickly converge to the drain port along the inclined surfaces in wet machining mode. In wet machining mode, the angle design of the inclined surfaces is based on gravity flow and liquid film stability theory. When the angle θ is too small (e.g., less than 142°), the liquid is significantly affected by surface tension as it flows along the inclined surfaces, easily leading to debris retention and reducing drainage efficiency. When the angle θ is too large (e.g., exceeding 150°), the liquid flow velocity is easily too high, causing the liquid to swirl or splash at the drain port, resulting in debris retention at the bottom of the machining cavity. According to the liquid gravity flow velocity equation: Where g is the acceleration due to gravity and h is the initial height of the liquid. Setting the included angle θ appropriately can ensure that the cutting fluid has a moderate flow rate, improve the collection efficiency of the drain port, and avoid liquid splashing caused by excessive flow rate.

[0021] In a further preferred embodiment, the two inclined surfaces set in the short side direction of the denture carving machine are the second inclined surfaces, and the included angle between the two second inclined surfaces is between 125° and 135°.

[0022] The effect of the above solution is that the included angle between the second inclined surfaces is set within the range of 125° to 135°, which further optimizes the drainage and dust removal path in the short side direction of the machining cavity, enabling cutting fluid and chips to efficiently converge and be discharged. Compared with the inclined surface design in the long side direction, the adjustment of the included angle in the short side direction mainly improves the fluid guidance and dust transport characteristics inside the machining cavity. When the included angle is too small (e.g., less than 125°), the flow path of liquid and dust in the short side direction becomes narrow, which easily leads to chip accumulation; when the included angle is too large (e.g., more than 135°), the fluid is prone to turbulence or dispersion, reducing drainage efficiency. By reasonably controlling this included angle, the flow of cutting fluid and chips in the short side direction can be made smoother, forming a good synergy with the flow in the long side direction, avoiding local liquid accumulation or dust retention, thereby improving the overall waste cleaning efficiency, reducing the deposition pollution inside the machining cavity, reducing the frequency of equipment maintenance, and extending the stable working cycle of the dental prosthesis engraving machine.

[0023] In a further preferred embodiment, the two inclined surfaces along the long side of the dental prosthesis engraving machine are designated as the first inclined surface. The dust removal port is located on the first inclined surface, and its center is situated within a pre-positioning region. This pre-positioning region is defined by the line connecting the center of the drain port to the top of the side wall of the processing chamber and the geometric features of the inclined surface. The distance L1 from the dust removal port to the center of the drain port and the distance L2 from the dust removal port to the side wall of the processing chamber satisfy the following relationship: And 0.4L≤L1,L2≤0.6L, where L is the length of the inclined surface.

[0024] The advantages of the above solution are as follows: the dust collection port is located on the first inclined surface (i.e., the inclined surface along the long side), which optimizes the dust extraction path based on airflow dynamics and negative pressure adsorption theory. This ensures that the negative pressure adsorption area at the dust collection port accurately covers the main dust accumulation area, improving dust collection efficiency. The ratio of L1 to L2 (based on the boundary layer adsorption effect in fluid dynamics) ensures that the dust collection port can efficiently capture suspended particles in the air under different operating conditions, preventing dust backflow or retention in the processing chamber. Furthermore, arranging the dust collection port on the first inclined surface, compared to traditional center or short-side arrangements, more effectively follows the natural settling trend of dust in the processing chamber and utilizes airflow guidance. This design allows dust to enter the dust collection duct along the shortest path under negative pressure, effectively reducing dust deposition caused by airflow turbulence and improving dust removal efficiency in dry mode. Simultaneously, this arrangement optimizes the airflow distribution within the processing chamber, limiting the dust diffusion path to the geometric constraints of the first inclined surface, thereby further improving dust collection efficiency and reducing the probability of dust entering non-target areas. Furthermore, the layout of the first inclined surface enhances the space utilization within the processing chamber, achieving optimal structural distribution of the drain and dust collection ports. This ensures that the two do not interfere with each other during dry / wet mode switching, further improving waste removal efficiency, reducing equipment maintenance costs, and extending the service life of the dental prosthesis engraving machine.

[0025] In a further preferred embodiment, the dental prosthesis carving machine has a pipe installation port on its outer side wall for placing a dust removal pipe. A flip plate is covered on the pipe installation port. When the dental prosthesis carving machine is in wet processing mode, the flip plate covers the pipe installation port.

[0026] The advantages of the above solution are: in the dry processing state, the external dust removal pipe can be connected to the internal dust removal pipe at the pipe installation port to form a complete dust removal channel; while in the wet processing state, the external dust removal pipe can be pulled out so that the flip plate can be closed at the pipe installation port to maintain aesthetics.

[0027] In a further preferred embodiment, the waste liquid collection box is mounted on a movable tray, and the movable tray has sliding rails on both sides to facilitate the pulling out and pushing forward of the waste liquid collection box.

[0028] The advantages of the above solution are as follows: the coordinated design of the movable tray and sliding rail allows the waste liquid collection box to be smoothly pulled out along a predetermined trajectory, enabling quick emptying or replacement operations without the need for external tools, thus reducing the difficulty of maintenance. Simultaneously, the movable tray is embedded in the bottom of the main body of the equipment, forming a compact integration with the original structure of the engraving machine, ensuring sufficient waste liquid collection volume without affecting the maintenance access of other functional modules. Furthermore, in the event of a sudden waste liquid overload, operators can quickly pull out the collection box for emergency drainage, preventing mass scrapping of processed parts due to downtime.

[0029] In a further preferred embodiment, the first sidewall and the second sidewall of the dental prosthesis carving machine used to form the processing cavity are adjacent, and both the first sidewall and the second sidewall are recessed inward.

[0030] The advantages of the above solution are as follows: With the inward indentation of the first and second sidewalls, the volume of the machining cavity is reduced, shortening the distance between the machining support base and the tool magazine, as well as the distance between both and the machining spindle. The reduced cavity volume increases the airflow velocity per unit time, creating a high pressure gradient with the negative pressure dust removal port at the bottom of the cavity, thus improving the directional dust flow efficiency. Simultaneously, the indented sidewall structure reduces internal turbulence, ensuring a uniform distribution of the negative pressure field and effectively preventing negative pressure attenuation caused by air leakage. Furthermore, the indentation of the first and second sidewalls creates clearance space, shortening the straight-line distance between the machining support base and the tool magazine, reducing the tool's idle travel time, and improving machining efficiency.

[0031] A dental prosthesis carving machine includes a cutting waste cleaning device as described above. Since the dental prosthesis carving machine incorporates all the technical features of the aforementioned cutting waste cleaning device, it also possesses all the technical effects of the aforementioned cutting waste cleaning device, and will not be elaborated further.

[0032] Compared with existing technologies, the cutting waste cleaning device for a dental prosthesis carving machine provided by this utility model includes a processing chamber, a waste liquid collection tank, and a dust collector. The bottom of the processing chamber is equipped with a drain port and a dust collection port, used to discharge liquid and debris in wet processing mode, or to discharge dust in dry processing mode, and the two ports do not operate simultaneously. The drain port is connected to the waste liquid collection tank via a drain pipe, and the dust collection port is connected to the dust collector via a dust collection pipe. The dust collector creates negative pressure within the pipe during operation to extract dust. This utility model achieves adaptive switching between wet and dry modes based on the principle of negative pressure adsorption. In wet processing mode, the cutting fluid and mixed debris are quickly discharged using the liquid level difference between the drain pipe and the waste liquid collection tank, and negative pressure suction (based on the principle of fluid continuity), while the dust collection port is closed to prevent liquid backflow. In dry processing mode, the dust collector creates dynamic negative pressure through the principle of gas-solid two-phase flow separation, guiding dust out and simultaneously closing the drain port to prevent dust from becoming damp and clumping. This device employs a physical isolation design to collect liquid-debris mixtures and ultrafine dust separately, effectively reducing internal contamination. Its modular integrated design allows for direct embedding into existing dental prosthesis carving machines without additional piping, improving maintenance convenience, extending maintenance cycles, and reducing energy consumption. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the dust removal device of the dental prosthesis carving machine disclosed in CN5656804U.

[0034] Figure 2 This is a schematic diagram of the automatic chip removal mechanism of the dental prosthesis carving machine disclosed in CN0261551U.

[0035] Figure 3 This is a schematic diagram of the cutting waste cleaning device used in a dental prosthesis carving machine according to this utility model.

[0036] Figure 4 This is a first-view structural schematic diagram of the machining frame containing the machining chamber in the cutting waste cleaning device for a dental prosthesis carving machine according to this utility model.

[0037] Figure 5 This is a cross-sectional view from the first perspective of the machining frame where the machining chamber is located in the cutting waste cleaning device for a dental prosthesis carving machine according to this utility model.

[0038] Figure 6 This is a cross-sectional view from the second perspective of the machining frame containing the machining chamber in the cutting waste cleaning device for a dental prosthesis carving machine according to this utility model.

[0039] Figure 7 This is a structural schematic diagram from the second perspective of the machining frame containing the machining chamber in the cutting waste cleaning device for a dental prosthesis carving machine according to this utility model. Detailed Implementation

[0040] This utility model provides a cutting waste cleaning device for a dental prosthesis carving machine and a dental prosthesis carving machine. To make the purpose, technical solution and effect of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and examples.

[0041] This utility model provides a device for cleaning up cutting waste from a dental prosthesis carving machine, such as... Figure 3 As shown, it includes a machining chamber 100 (the machining chamber 100 is a semi-enclosed chamber, preferably connected to the outside not only through a drain port 111 and a dust removal port 112, but also having an operation window covered by a rotatable cover plate, which is irrelevant to the invention point of this utility model and will not be described in detail), a waste liquid collection tank 200, and a dust collector (not shown); wherein, the bottom of the machining chamber 100 is provided with a drain port 111 and a dust removal port 112, wherein the drain port 111 is used to discharge cutting fluid and mixed chips in wet machining mode, and the dust removal port 112 is used to discharge dust in dry machining mode, and the two are not opened at the same time to ensure independent operation of dry and wet modes.

[0042] In wet processing mode, drain port 111 is connected to waste liquid collection tank 200 (e.g., via drain pipe) through a drain pipe. Figure 3(As shown) The drain pipe is connected to the waste liquid collection tank 200, with the other end extending below the liquid surface. This structure is based on the principle of fluid continuity in Bernoulli's equation, that is, in a closed pipe, the product of the fluid velocity and the pipe cross-sectional area remains constant. When the cutting fluid and mixed debris in the machining chamber 100 enter the drain pipe through the drain port 111, the gravitational potential energy of the liquid (relative height difference) causes the liquid to flow in the pipe due to the other end of the drain pipe being in the liquid in the waste liquid collection tank 200. At the same time, if there is a negative pressure suction force in the drain pipe, the liquid velocity in the pipe will be further increased, allowing the cutting fluid and mixed debris to be discharged into the waste liquid collection tank 200 more quickly, achieving efficient cleaning (this invention does not limit whether a negative pressure device is added to make the waste liquid discharge into the waste liquid collection tank 200 faster, and it does not affect the view of this invention). In addition, in this mode, the dust removal port 112 remains closed to prevent the cutting fluid from flowing back into the dust removal pipe and affecting the operation of the dry machining mode.

[0043] In dry processing mode, the dust collector is connected to the dust collection port 112 via a dust collection pipe. Based on the principle of gas-solid two-phase flow separation, a negative pressure is formed in the dust collection pipe after the dust collector starts, causing dust to be quickly drawn into the dust collector for separation and collection. This principle utilizes the kinetic energy of the airflow to carry dust particles away from the processing chamber 100. After entering the dust collector, due to the reduced flow velocity and inertia, the dust settles from the airflow and is stored in the dust collector, thus preventing dust backflow and contamination of the processing chamber 100. At the same time, the drain port 111 remains closed in dry processing mode to prevent dust from becoming damp and clumping, which could lead to pipe blockage or cleaning difficulties.

[0044] This invention achieves efficient switching between dry and wet modes through a physical isolation design, enabling the separate directional collection of liquid-debris mixtures and ultrafine dust, thereby effectively reducing the risk of internal contamination. Furthermore, the device adopts a modular integrated design, allowing it to be directly embedded into existing dental prosthesis carving machines without the need for additional external piping. This not only improves maintenance convenience but also extends maintenance cycles and reduces equipment energy consumption.

[0045] In a further preferred embodiment of this utility model, the cutting waste cleaning device further includes a liquid circulation mechanism, which includes a filter element 300 (e.g., Figure 3 As shown, a filter plate or filter screen (preferably, etc.) and a water pump (not shown) are used to achieve the recycling of cutting fluid. Specifically, the filter element 300 is located in the upper middle part of the waste fluid collection tank 200 to separate the solid and liquid components of the cutting fluid in the waste fluid collection tank 200 and remove mixed debris to ensure the cleanliness of the cutting fluid. The inlet of the water pump is connected to the liquid area of ​​the waste fluid collection tank 200, and the outlet is connected to the cutting fluid nozzle in the machining chamber 100 through a pipe to deliver the purified cutting fluid to the machining chamber 100 for recycling.

[0046] This solution is based on the theory of fluid recycling and the principle of solid-liquid separation. It utilizes a filter element 300 to physically separate solid particles in the cutting fluid, ensuring its cleanliness and thus improving its reusability. Simultaneously, a water pump provides power to transport the filtered cutting fluid along a closed-loop pipeline to the cutting fluid nozzles within the machining chamber 100, forming a continuously circulating cooling and lubrication system. This liquid circulation mechanism not only improves the utilization rate of the cutting fluid and reduces the need for external cutting fluid replenishment, but also reduces the frequency of cleaning the waste fluid collection tank 200, thus reducing maintenance workload. Furthermore, the continuously circulating cutting fluid provides stable cooling and lubrication, which helps optimize the machining environment of the dental prosthesis engraving machine, improves machining accuracy, and further enhances the overall working efficiency of the equipment.

[0047] According to another aspect of this utility model, the drain port 111 is located at the center of the bottom of the machining cavity 100. Inclined surfaces are provided around the drain port 111, and the height of the inclined surfaces gradually increases from the drain port 111 towards the side wall of the machining cavity 100, so as to guide the cutting fluid and mixed debris to collect towards the drain port 111. Among them, the two inclined surfaces along the long side of the dental prosthesis engraving machine are defined as the first inclined surface 110, such as... Figure 4 and Figure 5 As shown, the included angle between the two first inclined surfaces 110 is set between 142° and 150° (e.g., Figure 5 As shown), specifically preferably 145°; the two inclined surfaces along the short side direction of the denture carving machine are defined as the second inclined surface 120, as shown. Figure 4 and Figure 6 As shown, the included angle between the two second inclined surfaces 120 is set between 125° and 135° (e.g., Figure 6 As shown), the preferred angle is 130°.

[0048] The drain port 111 is located at the center of the bottom of the machining cavity 100, and with the surrounding inclined surface design, the cutting fluid can quickly converge under high-impact flow conditions. According to the theory of liquid surface tension, when a liquid flows on a solid surface, it is subject to the combined effects of adhesive force and gravity. By gradually raising the inclined surface design, the stagnation phenomenon of cutting fluid caused by turbulence effect can be reduced.

[0049] Assuming the liquid flow at the bottom of the processing cavity 100 is subject to gravitational acceleration g, its velocity v can be calculated using the liquid gravitational velocity equation: Where: g is the acceleration due to gravity, taken as 9.81 m / s². 2 h represents the initial height of the liquid, i.e., the depth of the liquid accumulation before it flows. By reasonably designing the height variation of the inclined surface, it is possible to ensure that the cutting fluid flow rate is moderate, preventing splashing due to excessive flow rate and debris deposition due to excessive flow rate.

[0050] The angle between the two first inclined surfaces 110 is set between 142° and 150° (with the horizontal plane as the circumference), because this angle range is based on the analysis of solid-liquid-gas three-phase flow behavior. The aim is to optimize the fluid and dust emission path along the long side, allowing the cutting fluid and mixed debris to quickly converge at the drain port 111 during wet machining. When the angle θ between the first inclined surfaces 110 is too small (e.g., less than 142°), the liquid is significantly affected by surface tension as it flows along the inclined surface, leading to debris retention and reduced drainage efficiency. When the angle θ is too large (e.g., exceeding 150°), the liquid flow velocity is too high, easily causing swirling or splashing at the drain port 111, which increases the risk of debris retention. Assume the tangential component of the liquid flowing along the inclined surface is F. t =mg*sinθ; The stability of the liquid film is determined by the surface tension coefficient σ. If the tilt angle θ is reasonable, it can ensure smooth liquid flow and reduce stagnation.

[0051] Similarly, the angle between the two second inclined surfaces (120°) is primarily designed to optimize the drainage and dust removal path along the shorter side, ensuring efficient convergence and discharge of cutting fluid and debris. When the angle is less than 125°, the fluid channel narrows, easily leading to debris accumulation; when the angle is greater than 135°, turbulence easily occurs, reducing drainage efficiency. Assuming the momentum change Δp = mvcosθ when the liquid flows along the shorter inclined surface, adjusting the angle range ensures a uniform distribution of fluid momentum, facilitating the discharge of liquid and debris along the shorter side and improving overall drainage efficiency.

[0052] Therefore, the central layout of the drain port 111, combined with the structural design of the surrounding inclined surfaces, allows the cutting fluid to quickly return to the drain port 111 under high-speed jetting, avoiding splashing and turbulence effects. The optimized angle between the first inclined surface 110 and the second inclined surface 120 ensures that the cutting fluid has a moderate flow rate, improves the collection efficiency of the drain port 111, and avoids liquid splashing. By reasonably setting the angle of the inclined surfaces and the flow path, the flow characteristics of the cutting fluid and chips are optimized, avoiding contamination of the machining cavity 100 due to local liquid accumulation or dust buildup. In addition, the above settings also reduce the frequency of manual cleaning, improve the automatic discharge capability of the dental prosthesis engraving machine, and enable the equipment to maintain a longer stable operating time in wet processing mode.

[0053] Preferably, dust collection ports 112 are provided on two inclined surfaces along the long side. The center of each dust collection port 112 is located in a pre-positioning region, which is defined by the line connecting the center of the drain port 111 to the top of the side wall of the processing chamber 100 and the geometric features of the inclined surfaces. Furthermore, the distance L1 from the dust collection port 112 to the center of the drain port 111 and the distance L2 from the dust collection port 112 to the side wall of the processing chamber 100 satisfy the following relationships: 0.4L≤L1≤0.6L, 0.3L≤L2≤0.5L, where L is the length of the inclined surface. Through this arrangement, this invention optimizes the dust extraction path based on airflow dynamics and negative pressure adsorption theory, ensuring that the negative pressure adsorption area at the dust collection port 112 accurately covers the main dust accumulation area, thereby improving dust collection efficiency. The ratio of L1 to L2 is based on the boundary layer adsorption effect in fluid dynamics, ensuring that the dust collection port 112 can efficiently capture suspended particles in the air under different operating conditions, preventing dust backflow or retention in the processing chamber 100. Furthermore, arranging the dust collection port 112 on the first inclined surface 110, compared to traditional center or short-side arrangements, can more effectively follow the natural settling trend of dust in the processing chamber 100. With the help of airflow guidance, dust is guided by negative pressure to enter the dust collection pipe along the shortest path, effectively reducing dust deposition caused by airflow turbulence and improving dust removal efficiency in dry mode.

[0054] Therefore, this arrangement optimizes the airflow distribution within the processing chamber 100, restricting the dust diffusion path to the geometric constraints of the first inclined surface 110, thereby further improving dust collection efficiency and reducing the probability of dust entering non-target areas. Simultaneously, the layout of the first inclined surface 110 enhances the space utilization within the processing chamber 100, achieving an optimal structural distribution between the drain port 111 and the dust collection port 112, ensuring that they do not interfere with each other during dry / wet mode switching.

[0055] Furthermore, the outer wall of the dental prosthesis carving machine is provided with a pipe mounting port for housing a dust removal pipe, and a flip-top plate is fitted over the pipe mounting port. When the dental prosthesis carving machine is in wet processing mode, the flip-top plate covers the pipe mounting port to prevent the dust removal pipe from being exposed and affecting the overall aesthetics. In this embodiment, the pipe mounting port allows the external dust removal pipe to connect with the internal dust removal pipe through the pipe mounting port in dry processing mode, forming a complete dust removal channel, thereby ensuring effective dust collection and discharge. When the dental prosthesis carving machine is in wet processing mode, the external dust removal pipe can be detached and pulled out, and the flip-top plate automatically covers the pipe mounting port, keeping the carving machine's appearance intact and preventing the humid environment from contaminating or damaging the pipe interface.

[0056] Preferably, the waste liquid collection tank 200 is mounted on a movable tray, with sliding rails on both sides of the tray. This allows the waste liquid collection tank 200 to be smoothly pulled along a predetermined path, enabling quick emptying or replacement. The cooperation between the movable tray and the sliding rails allows the waste liquid collection tank 200 to slide stably, eliminating the need for external tools and reducing the difficulty of maintenance. The movable tray is embedded in the bottom of the main body of the equipment, resulting in a compact and integrated structure that ensures sufficient waste liquid collection volume without obstructing the maintenance access of other functional modules. Furthermore, in the event of a sudden increase in waste liquid volume, operators can quickly pull out the waste liquid collection tank 200 for emergency discharge, preventing equipment downtime or reduced processing efficiency due to waste liquid accumulation.

[0057] In specific implementation, the dental prosthesis carving machine is used to form the sidewalls of the processing cavity 100, with the first sidewall 130 and the second sidewall 140 adjacent to each other, such as... Figure 7 As shown, both the first sidewall 130 and the second sidewall 140 are concave inward to optimize the space utilization within the machining cavity 100 and improve machining efficiency. Because the first sidewall 130 and the second sidewall 140 are concave inward, the overall volume of the machining cavity 100 is reduced, shortening the distance between the machining support base and the tool magazine, while also optimizing the relative distance between them and the machining spindle. With the reduced volume of the machining cavity 100, the airflow velocity per unit time is increased, forming a high gradient pressure difference with the negative pressure dust removal port 112 at the bottom of the cavity, thereby enhancing the directional flow of dust and improving dust removal efficiency. Simultaneously, the concave structure of the sidewalls reduces turbulence within the machining cavity 100, ensuring a uniform distribution of the negative pressure field and effectively preventing a decrease in dust removal efficiency due to negative pressure attenuation. Furthermore, the concavity of the first sidewall 130 and the second sidewall 140 creates clearance space, shortening the straight-line distance between the machining support base and the tool magazine, reducing the idle travel time during tool movement, and further improving machining efficiency.

[0058] This utility model also provides a dental prosthesis carving machine, which includes the cutting waste cleaning device for dental prosthesis carving machines described above. Since the dental prosthesis carving machine includes all the technical features of the aforementioned cutting waste cleaning device for dental prosthesis carving machines, it also possesses all the technical effects of the aforementioned cutting waste cleaning device for dental prosthesis carving machines, and will not be elaborated further.

[0059] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this invention and form different embodiments; for example, any one of the claimed embodiments can be used in any combination.

[0060] It should be noted that the above embodiments are illustrative of the present invention and not restrictive of it, and those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims listing several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be construed as limiting the order of execution.

Claims

1. A device for cleaning cutting waste from a dental prosthesis carving machine, characterized in that, include: The processing chamber has a drain port and a dust removal port at its bottom. The drain port is used to discharge liquid and mixed debris in wet mode, and the dust removal port is used to discharge dust in dry mode. The drain port and the dust removal port are not opened at the same time. The waste liquid collection tank is connected to the drain outlet via a drain pipe. The dust collector is connected to the dust collection port through a dust collection pipe. When the dust collector is running, it creates a negative pressure in the dust collection pipe to extract dust.

2. The cutting waste cleaning device for a dental prosthesis carving machine according to claim 1, characterized in that, The cutting waste cleaning device also includes a liquid circulation mechanism, which includes a filter and a water pump. The filter is located in the upper part of the waste liquid collection tank to ensure the cleanliness of the cutting fluid in the waste liquid collection tank. The water pump is used to extract the cutting fluid from the waste liquid collection tank and transport it to the cutting fluid nozzle in the machining cavity.

3. The cutting waste cleaning device for a dental prosthesis carving machine according to claim 1, characterized in that, The drain outlet is located at the center of the bottom of the processing chamber, and all four sides of the drain outlet are provided with inclined surfaces that gradually increase in height towards the side walls.

4. The cutting waste cleaning device for a dental prosthesis carving machine according to claim 3, characterized in that, The two inclined surfaces set along the long side of the dental prosthesis carving machine are called the first inclined surfaces, and the included angle between the two first inclined surfaces is between 135° and 155°.

5. The cutting waste cleaning device for a dental prosthesis carving machine according to claim 3, characterized in that, The two inclined surfaces set in the short side direction of the dental prosthesis carving machine are called the second inclined surfaces, and the included angle between the two second inclined surfaces is between 125° and 135°.

6. The cutting waste cleaning device for a dental prosthesis carving machine according to claim 3, characterized in that, Two inclined surfaces are provided along the long side of the dental prosthesis engraving machine, forming the first inclined surface. The dust removal port is located on the first inclined surface, and its center is situated in a pre-positioning region. This pre-positioning region is defined by the line connecting the center of the drain port to the top of the side wall of the processing chamber and the geometric features of the inclined surface. The distance L1 from the dust removal port to the center of the drain port and the distance L2 from the dust removal port to the side wall of the processing chamber satisfy the following relationship: And 0.4L≤L1,L2≤0.6L, where L is the length of the inclined surface.

7. The cutting waste cleaning device for a dental prosthesis carving machine according to claim 1, characterized in that, The dental prosthesis carving machine has a pipe installation port on its outer wall for placing a dust removal pipe. A flip plate is covered on the pipe installation port. When the dental prosthesis carving machine is in wet processing mode, the flip plate covers the pipe installation port.

8. The cutting waste cleaning device for a dental prosthesis carving machine according to claim 1, characterized in that, The waste liquid collection box is mounted on a movable tray, and the movable tray has sliding rails on both sides to facilitate the pulling out and pushing of the waste liquid collection box.

9. The cutting waste cleaning device for a dental prosthesis carving machine according to claim 1, characterized in that, The dental prosthesis carving machine is used to form a processing cavity. The first sidewall and the second sidewall are adjacent, and both the first sidewall and the second sidewall are concave inward.

10. A dental prosthesis carving machine, characterized in that, The dental prosthesis carving machine includes a cutting waste cleaning device for a dental prosthesis carving machine as described in any one of claims 1 to 9.

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