A cleaning device for a 3D printer stage

Abstract

The utility model relates to 3D printer field, specifically disclose a kind of cleaning device of 3D printer object table, including cabinet, object table, telescopic mechanism and spud knife component, the outside of cabinet is provided with negative pressure air extractor, telescopic mechanism drives spud knife component reciprocating movement to scrape off the dirt on the surface of object table, then dirt is sucked away. When worker takes away structural member, cover and scraper will move on the surface of object table, while negative pressure air extractor synchronously sucks away scattered powder and sintered material. This design can make full use of equipment idle time, effectively improve production efficiency. Since the gap between cover periphery and object table is small, and proper gap is also reserved between adjacent cutting edges, so that strong suction can be formed around the cover, not only can quickly suck away the surrounding powder, but also can suck away sintered material just scraped off in time, and the cleaning effect is more thorough.

Description

Technical Field

[0001] This utility model belongs to the field of laser 3D printers, and specifically relates to a cleaning device for a 3D printer stage. Background Technology

[0002] After a 3D laser printer finishes printing, a significant amount of excess powder remains inside the machine, and a small amount of metal shavings may also accumulate on the stage supporting the structural components. If these residues are not cleaned promptly, they may clog the powder feeding system, contaminate subsequent print jobs, and affect the uniformity of powder distribution. Therefore, cleaning is essential and a crucial step in equipment maintenance, ensuring print quality, and maintaining safety.

[0003] In routine printer use, workers typically cover the worktable with an isolation cover to enclose the structural components, then insert a tray from the bottom of the cover to scrape the components away, followed by cleaning up any residue. This manual method of cleaning the worktable reduces efficiency, and the printer remains idle and cannot operate during the component removal process. Therefore, a simple and reliable cleaning system is needed during this downtime to improve overall production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a cleaning device for a 3D printer stage that automatically cleans up residue.

[0005] To achieve the above objectives, this utility model provides a cleaning device for a 3D printer stage, including a cabinet and a liftable stage located in the middle of the cabinet. The cabinet interior is equipped with a telescopic mechanism and a scraper assembly, while the exterior of the cabinet is equipped with a negative pressure vacuum pump. The movable end of the telescopic mechanism pushes the scraper assembly to reciprocate, thereby scraping away dirt from the surface of the stage. The scraper assembly includes a long, downward-opening cover and a pair of scrapers located at the bottom of the cover. The cover is fixedly connected to the movable end of the telescopic mechanism. The blades of the scrapers are spaced apart, with gaps between adjacent blades. The blades of the front and rear scrapers are staggered, ensuring that the movement paths of the two sets of blades completely cover the stage. The top of the cover is equipped with an extraction pipe for connecting to the negative pressure vacuum pump.

[0006] As an improvement to the above solution, the telescopic mechanism adopts a scissor arm structure. The telescopic mechanism includes a pair of parallel guide slots, a scissor arm located between the two guide slots, and an electric push rod fixed to one of the guide slots. One guide slot is away from the platform and arranged on the back of the cabinet, while the other guide slot is close to the platform. The electric push rod adjusts the opening and closing angle of the scissor arm to push the cover to move.

[0007] As an improvement to the above solution, the bottom of the cover is provided with a groove to facilitate the insertion of the scraper. The length of the groove is greater than the length of the scraper, so that the scraper can move to achieve misalignment of the front and rear blades. The scraper is fixed to the cover by a set bolt.

[0008] As an improvement to the above solution, a counterweight is provided on the top of the cover.

[0009] As an improvement to the above solution, the scraper and its blade are both made of stainless steel.

[0010] This invention offers the following advantages: After the worker removes the structural components, the cover and scraper move on the platform surface, while a negative pressure vacuum pump simultaneously sucks away the scattered powder and sintered material. This design fully utilizes the equipment's idle time, effectively improving production efficiency. Because the gaps between the cover and the platform are minimal, and appropriate gaps are maintained between adjacent blades, a strong suction force is generated around the cover, quickly removing not only the surrounding powder but also the freshly scraped sintered material, resulting in a more thorough cleaning. Attached Figure Description

[0011] Fig. 1 A schematic diagram of a cleaning device in one embodiment;

[0012] Fig. 2 This is a schematic diagram of the cover and scraper in one embodiment;

[0013] Fig. 3 This is a cross-sectional view of the cover and scraper in one embodiment.

[0014] Explanation of reference numerals in the attached drawings: 11. Cabinet; 12. Platform; 21. Telescopic mechanism; 22. Suction pipe; 31. Cover; 32. Scraper. Detailed Implementation

[0015] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Where the terms "first," "second," and "third" are used for descriptive purposes and to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0018] Reference Figs. 1-3 This utility model discloses a cleaning device for a 3D printer platform, including a cabinet 11 and a liftable platform 12 located in the middle of the cabinet 11. The cabinet 11 is also equipped with a telescopic mechanism 21 and a scraper assembly. A negative pressure vacuum machine is installed outside the cabinet 11. The movable end of the telescopic mechanism 21 pushes the scraper assembly to reciprocate, thereby scraping off the dirt on the surface of the platform 12. The scraper assembly includes a long, downward-opening cover 31 and a pair of scrapers 32 located at the bottom of the cover 31. The cover 31 is fixedly connected to the movable end of the telescopic mechanism 21. The blades of the scrapers 32 are spaced apart so that there is a gap between adjacent blades. The blades of the front scraper 32 and the blades of the rear scraper 32 are staggered so that the movement path of the two sets of blades completely covers the platform 12. The top of the cover 31 is equipped with an exhaust pipe for connecting to the negative pressure vacuum machine.

[0019] As an improvement to the above solution, the telescopic mechanism 21 adopts a scissor arm structure. The telescopic mechanism 21 includes a pair of parallel guide slots, a scissor arm located between the two guide slots, and an electric push rod fixed to one of the guide slots. One guide slot is located away from the platform 12 and on the back of the cabinet 11, while the other guide slot is close to the platform 12. The electric push rod adjusts the opening and closing angle of the scissor arm to move the cover 31. The scissor arm structure has the advantage of a large telescopic ratio and occupies a small volume when retracted; for example... Fig. 1As shown, the scissor arm is located on the back of the cabinet 11, and will not obstruct the normal operation of the 3D laser head, powder spreading mechanism, and platform 12. Other structures of the scissor arm can refer to existing technologies.

[0020] As an improvement to the above solution, the bottom of the cover 31 is provided with a groove to facilitate the insertion of the scraper 32. The length of the groove is greater than the length of the scraper 32, allowing the scraper 32 to move and achieve misalignment of the front and rear blades. The scraper 32 is fixed to the cover 31 by a set bolt. With this solution, the scrapers 32 can be of the same specification, only needing to be staggered during installation, eliminating the need to produce two different scrapers 32 and reducing component manufacturing costs.

[0021] As an improvement to the above solution, a counterweight is provided on the top of the cover 31. With this solution, appropriate pressure helps the scraper 32 press firmly against the surface of the platform 12, improving the scraping effect. The counterweight is made of stainless steel and is temporarily fixed to the upper surface of the cover 31 with adhesive.

[0022] As an improvement to the above solution, the scraper 32 and its blade are both made of stainless steel.

[0023] After the workers remove the structural components, the cover 31 and scraper 32 move on the surface of the platform 12, while the negative pressure vacuum pump simultaneously sucks away the scattered powder and sintered material. This design makes full use of the equipment's idle time and effectively improves production efficiency. Because the gaps between the cover 31 and the platform 12 are small, and appropriate gaps are also maintained between adjacent blades, a strong suction force can be formed around the cover 31, which can not only quickly suck away the surrounding powder, but also promptly suck away the sintered material that has just been scraped off, resulting in a more thorough cleaning effect.

[0024] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A cleaning device for a 3D printer platform, comprising a cabinet and a liftable platform located in the middle of the cabinet, characterized in that: The cabinet is equipped with a telescopic mechanism and a scraper assembly inside, and a negative pressure vacuum cleaner is installed outside the cabinet. The movable end of the telescopic mechanism pushes the scraper assembly to reciprocate, thereby scraping away dirt from the surface of the platform. The scraper assembly includes a long, downward-opening cover and a pair of scrapers located at the bottom of the cover. The cover is fixedly connected to the movable end of the telescopic mechanism. The blades of the scrapers are spaced apart so that there is a gap between adjacent blades. The blades of the front scraper and the blades of the rear scraper are staggered so that the movement path of the two sets of blades completely covers the platform. The top of the cover is equipped with an extraction pipe for connecting to the negative pressure vacuum cleaner.

2. The cleaning device for the 3D printer stage according to claim 1, characterized in that: The telescopic mechanism adopts a scissor arm structure. The telescopic mechanism includes a pair of parallel guide slots, a scissor arm located between the two guide slots, and an electric push rod fixed to one of the guide slots. One guide slot is away from the platform and arranged on the back of the cabinet, while the other guide slot is close to the platform. The electric push rod adjusts the opening and closing angle of the scissor arm to push the cover to move.

3. The cleaning device for the 3D printer stage according to claim 2, characterized in that: The bottom of the cover is provided with a groove to facilitate the insertion of the scraper. The length of the groove is greater than the length of the scraper, so that the scraper can move to achieve misalignment of the front and rear blades. The scraper is fixed to the cover by a set bolt.

4. The cleaning device for the 3D printer stage according to claim 3, characterized in that: A counterweight is provided on the top of the cover.

5. The cleaning device for the 3D printer stage according to claim 4, characterized in that: The scraper and its blade are both made of stainless steel.

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