Cabin door structure of closed 3D printer

Abstract

The utility model discloses a closed 3D printer cabin door structure which comprises a cabin door assembly, the front portion of a printer sealed cabin is provided with a cabin door opening, one side of the cabin door opening is rotatably connected with the cabin door assembly, the cabin door assembly comprises a sealing door, a window assembly, a door lock and a handle, the sealing door is rotatably connected to one side of the cabin door opening, and the window assembly is rotatably connected to the other side of the cabin door opening. The sealing door is arranged in the cabin door opening and connected into the cabin door opening in a closed mode, a door lock is installed between the other side of the sealing door and the edge of the cabin door opening, a handle is fixedly connected to the portion, on one side of the door lock, of the sealing door, and a window assembly is fixedly installed in the middle of the sealing door. The utility model aims to provide the cabin door structure which is better in heat preservation and sound insulation performance, convenient to clean the observation window and reliable in air tightness.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing equipment technology, specifically to a door structure for a closed 3D printer. Background Technology

[0002] Enclosed 3D printers are widely used in industrial and high-end consumer applications due to their advantages, such as effectively maintaining a stable temperature inside the printing chamber, reducing the emission of printing odors, lowering operating noise, and providing a controlled printing environment (e.g., inert gas protection) for special materials (e.g., ABS, nylon). These printers typically have an openable and closable door at the front for easy loading and unloading of the printing platform and finished products.

[0003] As a key component of enclosed 3D printers, one of the core functions of the door is to provide an observation window, allowing users to monitor the printing process in real time without opening the door. However, the observation window design of existing enclosed 3D printer doors generally suffers from the following significant drawbacks:

[0004] 1. Insufficient thermal insulation: During printing, the temperature inside the printing chamber is typically high, reaching over 60℃. Most current observation windows use a single-layer glass structure. Single-layer glass has a high thermal conductivity and poor thermal insulation, causing significant heat loss through the observation window. This not only increases the printer's energy consumption but, more importantly, makes it difficult to maintain the uniformity and stability of the internal temperature. This is especially problematic when printing large models or temperature-sensitive materials, easily affecting the quality and dimensional accuracy of the printed parts, and even leading to printing failure.

[0005] 2. Internal contamination is difficult to clean, affecting observation results: During high-temperature printing, some printing materials (especially thermoplastics) release volatile organic compounds (VOCs) or tiny dust particles. These substances easily condense and adhere to the relatively cool inner surface of the observation window (the side facing the printing cavity), forming an oil film or stains. Over time, this contaminant layer can severely obstruct vision, making it difficult for users to clearly observe the printing status and affecting the monitoring and judgment of the printing process.

[0006] 3. Difficulty in Maintaining the Observation Window: Regarding the aforementioned internal contamination problem, existing technologies typically use adhesive or complex, difficult-to-remove methods to fix the observation window glass to the hatch. This makes cleaning the inner glass extremely inconvenient, often requiring specialized tools or disassembling the entire hatch or even part of the aircraft structure. This is not only cumbersome and time-consuming, but also necessitates prolonged interruptions to printing during cleaning, significantly reducing equipment efficiency and user experience. Faced with a blurry observation window, users often have no choice but to endure or frequently interrupt printing for complex cleaning, lacking convenient and effective maintenance methods.

[0007] Therefore, there is an urgent need to develop a new type of enclosed 3D printer door structure. Utility Model Content

[0008] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a door structure with better thermal insulation and sound insulation, easier cleaning of the observation window, and reliable airtightness.

[0009] The technical solution adopted by this utility model to achieve the above-mentioned objectives is: a door structure for a closed 3D printer, including a door assembly. A doorway is opened at the front of the printer's sealed chamber, generally used for retrieving printed items. A door assembly is rotatably connected to one side of the doorway, enabling sealing of the doorway during printing to prevent the entry of cold air or the release of internal odors. The door assembly includes a sealing door, a window assembly, a door lock, and a handle. The sealing door is rotatably connected to one side of the doorway and is closed inside the doorway. The sealing door is the main structure for sealing the doorway. A door lock is installed between the other side of the sealing door and the edge of the doorway, effectively preventing others from opening the sealing door. A handle is fixedly connected to the sealing door on the side of the door lock for convenient opening and closing. A window assembly is fixedly installed in the middle of the sealing door for observation of the items inside the chamber.

[0010] In the above technical solution, the window assembly includes an outer ring plate, an inner sleeve, a first glass plate, a second glass plate, a retaining ring, and an inner threaded sleeve. A mounting hole is provided in the middle of the sealing door. The inner sleeve is sleeved into the mounting hole. One end of the inner sleeve passes through the mounting hole and is fixedly connected to the outer ring plate. The outer ring plate is fixedly connected to the outer wall of the sealing door by screws. A first glass plate is disposed in the inner sleeve on one side of the outer ring plate. A first sealing strip is disposed on the other edge of the first glass plate. A second sealing strip is disposed on the other side of the first sealing strip. The inner rings of the first and second sealing strips are respectively connected to the retaining ring. The second sealing strip is in contact with the second glass plate. A hollow rubber ring is disposed on the other side of the second glass plate. The hollow rubber ring is in contact with a limiting ring. The limiting ring is fixedly connected to one end of the inner threaded sleeve. The inner threaded sleeve is threadedly connected to one end of the inner sleeve.

[0011] In the above technical solution, a sealing gasket is provided between the outer ring plate and the first glass plate.

[0012] In the above technical solution, a sealing groove is provided at the opening of the mounting hole on one side of the inner threaded sleeve. An outer ring sleeve is fitted and connected in the sealing groove. An outer rubber sleeve is fixedly connected to one side of the outer ring sleeve. The outer rubber sleeve is wrapped and connected inside the outer cover ring. The outer cover ring is fixedly connected to the inner threaded sleeve.

[0013] In the above technical solution, an installation groove is provided on the inner edge of the sealing door, and an airtight rubber ring is fixedly connected in the installation groove.

[0014] The beneficial effects of this utility model are:

[0015] 1. Significantly improved thermal insulation and soundproofing: The window assembly adopts a double-layer glass structure, which effectively blocks the heat loss inside the chamber, maintains a stable printing temperature, and significantly reduces the transmission of working noise.

[0016] 2. Effectively prevents internal fogging and pollution: The double-layer glass design increases the temperature difference buffer between the inner glass (second glass plate) and the air inside the high-temperature chamber, significantly reducing the condensation of volatiles on its surface and maintaining clear observation.

[0017] 3. Easy cleaning and maintenance of the observation window: The internal glass components (second glass plate, etc.) can be easily disassembled by unscrewing the inner screw sleeve, making it easy to clean the contaminated inner glass surface or replace it directly. The operation is simple and efficient.

[0018] 4. Multiple seals ensure reliable airtightness: The multi-layer sealing strips inside the window assembly (first and second sealing strips, hollow rubber ring, sealing gasket) work together with the airtight rubber ring at the edge of the hatch to provide excellent overall sealing performance.

[0019] 5. Ensure print quality and user experience: Comprehensive improvements in insulation, visibility, and ease of maintenance help stabilize the printing environment, increase print success rate, and enhance the user experience. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the door installation structure of this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the door assembly of this utility model;

[0022] Figure 3 for Figure 2 Detailed structural diagram of part A1 in the middle;

[0023] Figure 4 This is a cross-sectional disassembly diagram of the hatch assembly.

[0024] In the diagram: 1 Printer sealing chamber, 2 Sealing door, 3 Window assembly, 4 Door lock, 5 Handle, 101 Mounting hole, 102 Inner sleeve, 103 Outer ring plate, 104 First glass plate, 105 First sealing strip, 106 Second sealing strip, 107 Retaining ring, 108 Second glass plate, 109 Hollow rubber ring, 110 Limiting ring, 111 Inner threaded sleeve, 112 Sealing gasket, 113 Sealing groove, 114 Outer ring sleeve, 115 Outer rubber sleeve, 116 Outer cover ring, 117 Mounting groove, 118 Airtight rubber ring. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Please see Figure 1-4 A door structure for a closed 3D printer includes a door assembly. The front of the printer's sealed chamber 1 has a door opening, generally used to retrieve printed items. A door assembly is rotatably connected to one side of the door opening, which can achieve a seal at the door opening during the printing process, preventing the entry of cold air from outside or the emission of internal odors. The door assembly includes a sealing door 2, a window assembly 3, a door lock 4, and a handle 5. The sealing door 2 is rotatably connected to one side of the door opening and is closed inside the door opening. The sealing door 2 is the main structure for sealing the door opening. A door lock 4 is installed between the other side of the sealing door 2 and the edge of the door opening, which can effectively prevent others from opening the sealing door 2. A handle 5 is fixedly connected to the sealing door 2 on one side of the door lock 4 for convenient opening and closing of the door. A window assembly 3 is fixedly installed in the middle of the sealing door 2 for observation of the items inside the chamber.

[0027] In the above technical solution, the window assembly 3 includes an outer ring plate 103, an inner sleeve 102, a first glass plate 104, a second glass plate 108, a retaining ring 107, and an inner threaded sleeve 111. A mounting hole 101 is provided in the middle of the sealing door 2. The inner sleeve 102 is sleeved inside the mounting hole 101. One end of the inner sleeve 102 protrudes from the mounting hole 101 and is fixedly connected to the outer ring plate 103. The outer ring plate 103 is fixedly connected to the outer wall of the sealing door 2 by screws. The first glass plate is disposed in the inner sleeve 102 on one side of the outer ring plate 103. 104. A first sealing strip 105 is provided on the other edge of the first glass plate 104, and a second sealing strip 106 is provided on the other side of the first sealing strip 105. The inner rings of the first sealing strip 105 and the second sealing strip 106 are respectively connected to the retaining ring 107. The second sealing strip 106 is in contact with the second glass plate 108. A hollow rubber ring 109 is provided on the other side of the second glass plate 108. The hollow rubber ring 109 is in contact with the limiting ring 110. The limiting ring 110 is fixedly connected to one end of the inner threaded sleeve 111. The threaded sleeve 111 is threaded to one end of the inner sleeve 102; a sealing washer 112 is provided between the outer ring plate 103 and the first glass plate 104; a sealing groove 113 is provided at the opening of the mounting hole 101 on one side of the inner threaded sleeve 111, and an outer ring sleeve 114 is fitted into the sealing groove 113. An outer rubber sleeve 115 is fixedly connected to one side of the outer ring sleeve 114. The outer rubber sleeve 115 is wrapped and connected inside the outer cover ring 116. The outer cover ring 116 is fixedly connected to the inner threaded sleeve 111. When the inner threaded sleeve 111 is tightened, the limiting ring 110 is pushed. The hollow rubber ring 109 then presses the second glass plate 108, the second sealing strip 106, the retaining ring 107, the first sealing strip 105, and the first glass plate 104 together, ultimately making the first glass plate 104 tightly adhere to the outer ring plate 103, forming a multi-layer seal. In addition, the inner threaded sleeve 111 can be removed by thread, thereby realizing the replacement of the first glass plate 104 or the second glass plate 108. The window assembly 3 adopts a double-layer glass structure, which can effectively reduce the impact of cabin noise on the outside world, and also reduce the loss of cabin temperature.

[0028] In the above technical solution, an installation groove 117 is provided on the inner edge of the sealing door 2, and an airtight rubber ring 118 is fixedly connected in the installation groove 117 to further improve the sealing performance between the sealing door 2 and the hatch door.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A door structure for a closed 3D printer, comprising a door assembly, characterized in that: The front of the printer sealed chamber (1) is provided with a doorway. A door assembly is rotatably connected to one side of the doorway. The door assembly includes a sealed door (2), a window assembly (3), a door lock (4), and a handle (5). The sealed door (2) is rotatably connected to one side of the doorway and is closed inside the doorway. A door lock (4) is installed between the other side of the sealed door (2) and the edge of the doorway. A handle (5) is fixedly connected to the sealed door (2) on one side of the door lock (4). A window assembly (3) is fixedly installed in the middle of the sealed door (2).

2. The door structure of a closed 3D printer according to claim 1, characterized in that: The window assembly (3) includes an outer ring plate (103), an inner sleeve (102), a first glass plate (104), a second glass plate (108), a retaining ring (107), and an inner threaded sleeve (111). The sealing door (2) has a mounting hole (101) in the middle. The inner sleeve (102) is connected to the mounting hole (101). One end of the inner sleeve (102) extends out of the mounting hole (101) and is fixedly connected to the outer ring plate (103). The outer ring plate (103) is fixedly connected to the outer wall of the sealing door (2) by screws. A first glass plate (104) is disposed in the inner sleeve (102) on one side of the outer ring plate (103). 4) A first sealing strip (105) is provided on the other side edge, and a second sealing strip (106) is provided on the other side of the first sealing strip (105). The inner rings of the first sealing strip (105) and the second sealing strip (106) are respectively connected to the retaining ring (107). The second sealing strip (106) is in contact with the second glass plate (108). A hollow rubber ring (109) is provided on the other side of the second glass plate (108). The hollow rubber ring (109) is in contact with the limiting ring (110). The limiting ring (110) is fixedly connected to one end of the inner threaded sleeve (111). The inner threaded sleeve (111) is threadedly connected to one end of the inner sleeve (102).

3. The door structure of a closed 3D printer according to claim 2, characterized in that: A sealing gasket (112) is provided between the outer ring plate (103) and the first glass plate (104).

4. The door structure of a closed 3D printer according to claim 3, characterized in that: A sealing groove (113) is provided at the opening of the mounting hole (101) on one side of the inner threaded sleeve (111). An outer ring sleeve (114) is fitted and connected in the sealing groove (113). An outer rubber sleeve (115) is fixedly connected to one side of the outer ring sleeve (114). The outer rubber sleeve (115) is wrapped and connected in the outer cover ring (116). The outer cover ring (116) is fixedly connected to the inner threaded sleeve (111).

5. The door structure of a closed 3D printer according to claim 1, characterized in that: The inner edge of the sealing door (2) is provided with an installation groove (117), and an airtight rubber ring (118) is fixedly connected in the installation groove (117).

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