Automatic door opening and closing method of 3D printer

Abstract

The application discloses a kind of 3D printer automatic door opening and closing method, it is related to 3D printer technical field, and printing platform is connected with opening and closing door by separable door opening and closing component.When opening door, platform drops and makes component combine, and door body is deflected and opened using platform lifting drive;When closing door, platform rises and drives door body to close, and component is automatically separated after component, decoupling is removed to facilitate manual operation and normal printing.Component includes coaxial rotating part and driving part, and linear motion is converted into rotary motion by screw part and combination part cooperation, and rolling structure is provided to reduce friction and noise.The application reuses platform lifting mechanism as power source, without additional motor, simplifies structure and control;It has the flexibility of automatic opening and closing and manual intervention, transmission is stable and accurate;Cooperate with magnetic attraction device to ensure sealing, adapt to single and double door and annular platform, reduce cost and improve production efficiency and reliability.

Description

Technical Field

[0001] This invention relates to the field of 3D printer technology, and in particular to a method for automatically opening and closing the door of a 3D printer. Background Technology

[0002] With the rapid development of additive manufacturing technology, industrial and professional-grade 3D printers widely adopt enclosed frame structures to maintain a stable temperature field within the printing cavity, isolate dust, and reduce operating noise. These printers typically have a door on one side or front of the frame for operators to access the printing area when loading and unloading models, changing consumables, cleaning the cavity, and performing routine maintenance. Currently, most models rely on manual pushing and pulling to open and close the door, which is cumbersome and inefficient; the human-machine interface is also poor, making it difficult to meet the needs of unattended or high-frequency part retrieval applications in automated production lines.

[0003] To achieve automatic opening and closing of doors, some existing technologies configure the door body with a separate drive motor, reduction mechanism, or cylinder, and transmit power to the door body through a transmission mechanism such as guide rails, connecting rods, or gear racks. However, this solution has the following drawbacks: First, the additional power components and supporting transmission structure significantly increase the number of parts, assembly steps, and manufacturing costs; second, the independent drive system requires additional dedicated control circuits and sensors, increasing the complexity of electrical control and wiring difficulties; third, the additional power components occupy the limited installation space inside the frame, which is not conducive to the compact design of the overall structure.

[0004] Furthermore, existing automatic door opening and closing solutions also have significant defects in structural coupling. When the drive mechanism and the door body are rigidly or semi-rigidly connected, in situations requiring manual operation of the door body, such as power outages, equipment maintenance, or emergency parts retrieval, the transmission mechanism will interfere with the manual deflection of the door body. Operators will not be able to open and close the door smoothly, and may even damage the transmission components due to forced operation. Adding a clutch or release mechanism to solve this problem further increases the structural complexity and cost.

[0005] Meanwhile, the printing platform of a 3D printer is equipped with a lifting drive mechanism (such as a lead screw, synchronous belt, or linear motor). This mechanism works frequently during printing preparation and printing, and has sufficient driving force and precise position control capabilities. However, in the existing technical solutions, this lifting drive mechanism only serves the Z-axis positioning of the printing platform. Its driving capability is idle during non-printing periods (such as part retrieval and maintenance phases) and cannot be effectively reused, resulting in a waste of power resources. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, the present invention discloses an automatic door opening and closing method for a 3D printer.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] An automatic door opening and closing method for a 3D printer, applied to a printer body with a frame structure, the printer body having a horizontally deflectable door and a vertically lifting printing platform; including the following steps:

[0009] S1. Install a detachable door opening and closing assembly between the printing platform and the door. When the door opening and closing assembly is in the detached state, the door can be manually opened or closed.

[0010] S2. Open the door; Confirm that the door is closed, control the printing platform to descend. After the printing platform descends to the door opening position, the door opening and closing assembly engages, and the printing platform continues to descend. The descent of the printing platform is used as the driving force to drive the door opening and closing assembly, causing the door to deflect and open along the horizontal plane. When the printing platform falls to the bottom, the door reaches the maximum opening position.

[0011] S3. Close the door; control the printing platform to rise, and use the rising of the printing platform as the driving force to drive the door opening and closing assembly, so that the door deflects in the opposite direction along the horizontal plane to close. After the door is fully closed, the printing platform continues to rise until the door opening and closing assembly is in the separated state, and the printer body can then perform normal printing operations.

[0012] Preferably, the door opening and closing assembly includes:

[0013] A rotating component is installed at the bottom rotating shaft of the opening and closing door, and the rotating component is coaxial with the rotating shaft of the opening and closing door. A spiral part is provided on one side of the rotating component.

[0014] The driving component is installed at the end corner of the rotating part of the printing platform. The driving component is provided with a connecting part that can be separated from or connected to the spiral part of the rotating part.

[0015] Preferably, the spiral part of the rotating component is a spiral blade, and the connecting part of the driving component is a slot that slides and adapts to the spiral blade.

[0016] Preferably, one or both sides of the groove of the drive component are rotatably connected to rollers or balls that can contact the helical blades.

[0017] Preferably, the spiral part of the rotating component is a spiral groove, and the connecting part of the driving component is a sliding pin that is slidably adapted to the spiral groove.

[0018] Preferably, the sliding pin of the driving component is rotatably connected to the driving component, or the sliding pin rod is rotatably connected to a rotating sleeve.

[0019] Preferably, the driving component is a separate accessory mounted on the printing platform, or a movable base for the printing platform, or an integral structure with the printing platform.

[0020] Preferably, the door is a single door or a double door in the form of two doors opening in opposite directions.

[0021] Preferably, a magnetic attraction device is provided between the inner side of the opening and closing door and the frame of the printer body to keep the opening and closing door closed.

[0022] Preferably, the printing platform is a conveyor belt type ring printing platform.

[0023] By employing the technical solution described above, the present invention has the following beneficial effects:

[0024] (1) This invention reuses the printing platform's own lifting drive mechanism as the power source for the automatic opening and closing of the door. It eliminates the need for separate drive motors, cylinders, and other additional power components and independent control circuits for the door, significantly reducing the number of parts, assembly processes, and electrical control complexity. This helps reduce manufacturing costs and improve equipment reliability. Meanwhile, the door opening and closing assembly can switch between a separated state and a connected state. When in the separated state, the door and printing platform are decoupled, allowing operators to smoothly open and close the door manually during power outages, maintenance, or consumable replacement, avoiding motion interference from the transmission mechanism. When in the connected state, the lifting motion of the printing platform is converted into the deflection motion of the door via the door opening and closing assembly, achieving automatic opening and closing, thus balancing the flexibility of automated operation and manual intervention.

[0025] (2) The door opening and closing assembly of the present invention adopts a cooperative structure of a rotating component and a driving component. The rotating component is coaxially arranged and fixedly connected with the rotation shaft of the opening and closing door. The driving component is installed at the corresponding end corner of the printing platform. The two achieve the conversion of vertical linear motion to horizontal rotational motion through the cooperation of the spiral part and the joint part. This transmission path is short and the structure is compact. The deflection angle of the opening and closing door corresponds one-to-one with the rotation angle of the rotating component, which makes it easy to accurately control the opening and closing position of the opening and closing door by controlling the lifting stroke of the printing platform. The spiral cooperation has the characteristics of smooth transmission and no impact, making the opening and closing process of the door smooth. At the same time, by setting rolling friction structures such as rollers, balls or rotating sleeves between the spiral blades and the slot or between the sliding pin and the spiral groove, the sliding friction is converted into rolling friction, which effectively reduces motion resistance and wear, reduces the load on the lifting drive mechanism, extends the service life of the component and reduces operating noise.

[0026] (3) This invention ensures that the drive component can smoothly drive the rotating component to rotate when moving vertically by reasonably designing the helix angle of the helical part, avoiding the inability to open and close the door due to self-locking caused by an excessively small helix angle. The drive component can be set as an independent accessory, a printing platform moving base, or integrally formed with the printing platform. The independent accessory is convenient for individual replacement and maintenance and can be adapted to different models, while the moving base or integrated structure further simplifies the number of parts. In addition, this solution can flexibly adapt to single-door or double-door forms. In the double-door form, the two sets of door opening and closing components work synchronously in opposite directions, reducing the space required for single-sided deflection, which is suitable for scenarios where the side installation space is limited, and improves the environmental adaptability of the whole machine.

[0027] (4) The present invention provides a magnetic attraction device between the inner side of the door and the frame. Utilizing the mutual attraction between a permanent magnet and a ferromagnetic material or a permanent magnet of opposite poles, a holding torque is provided when the door is closed, preventing accidental opening due to vibration or airflow disturbance, thus ensuring the sealing of the printing cavity. The magnetic attraction device is positioned far from the rotation axis, allowing sufficient holding torque to be generated with a smaller magnetic force, which helps reduce the size of the permanent magnet. Furthermore, the magnetic force is designed to be less than the driving force of the door opening and closing assembly, enabling the door to overcome the magnetic force smoothly without an additional unlocking mechanism during automatic opening, simplifying the structural design. Even when the door opening and closing assembly is separated, the magnetic attraction device can still maintain the door closed, preventing it from being pushed open by its own weight or external force after manual closing, thus improving safety and convenience.

[0028] (5) When the printing platform of this invention adopts a conveyor belt-type ring structure, after the opening and closing door automatically opens, the ring printing platform can send the printed products out of the cavity along the conveying direction. The operator or the subsequent part-retrieving mechanism does not need to put their hands into the high-temperature cavity to obtain the finished product. The continuous conveying action of the ring printing platform and the automatic opening and closing of the opening and closing door can realize continuous printing and part-retrieving operations, which significantly improves production efficiency and is especially suitable for high-frequency part-retrieving application scenarios in automated production lines. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 2 This is a three-dimensional structural diagram of the first type of door opening and closing assembly;

[0031] Figure 3 This is a three-dimensional structural diagram of the second type of door opening and closing assembly;

[0032] Figure 4 This is a three-dimensional structural diagram of the first type of rotating component;

[0033] Figure 5 This is a three-dimensional structural diagram of the first type of driving component;

[0034] Figure 6 This is a three-dimensional structural diagram of the second type of rotating component;

[0035] Figure 7 This is a three-dimensional structural diagram of the second type of driving component.

[0036] In the diagram: 1. Printer body; 2. Opening and closing door; 3. Printing platform; 4. Door opening and closing assembly; 4-1. Rotating component; 4-2. Driving component; 5. Magnetic suction device. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. They are used only for the convenience of describing the invention and for 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 the invention. In this application, unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] Combined with appendix Figures 1-7 The present invention discloses an automatic door opening and closing method for a 3D printer, which is applied to a printer body 1 with a frame structure. The printer body 1 is provided with an opening and closing door 2 that can be opened by deflection around a vertical axis in a horizontal plane and a printing platform 3 that can be raised and lowered in a vertical direction. The method includes the following steps:

[0040] S1. A door opening and closing assembly 4 that can be separated and joined is installed between the printing platform 3 and the opening and closing door 2. When the door opening and closing assembly 4 is in the separated state, there is no motion coupling relationship between the opening and closing door 2 and the printing platform 3. The operator can manually open or close the opening and closing door 2 to facilitate manual operation of the printer body 1 in situations such as power failure, equipment maintenance, replacement of consumables, or cleaning of the printing cavity. At the same time, the door opening and closing assembly 4 avoids motion interference with the manual operation of the opening and closing door 2. When the door opening and closing assembly 4 is in the joined state, the lifting and lowering movement of the printing platform 3 can be transmitted to the opening and closing door 2 through the door opening and closing assembly 4, thereby driving the opening and closing door 2 to automatically deflect and open or close.

[0041] S2. Opening the Door: First, confirm that the door 2 is closed. Then, control the printing platform 3 to descend vertically. When the printing platform 3 descends to the preset door engagement position, the door assembly 4 engages. Afterward, control the printing platform 3 to continue descending. The vertical descent of the printing platform 3 is converted into rotational motion through the door assembly 4, which in turn causes the door 2 to deflect and open horizontally around its axis of rotation. When the printing platform 3 reaches its lowest point, the door 2 reaches its maximum open position. This step utilizes the printing platform 3's own lifting drive mechanism as the door opening power source, eliminating the need for a separate drive motor or cylinder for the door 2, thus reducing the number of components and the complexity of electrical control.

[0042] S3. Closing the Door: The printing platform 3 is controlled to rise vertically. The vertical upward movement of the printing platform 3 is transmitted to the opening and closing door 2 through the door opening and closing assembly 4, which is in the engaged state. This causes the opening and closing door 2 to deflect in the opposite direction around its rotation axis and close in the horizontal plane. After the opening and closing door 2 is fully closed, the printing platform 3 continues to rise. The drive component 4-2 of the door opening and closing assembly 4 disengages from the rotating component 4-1, and the door opening and closing assembly 4 returns to the separated state. The motion coupling between the opening and closing door 2 and the printing platform 3 is released, and the printing platform 3 continues to rise to the preset printing working position. The printer body 1 can then perform normal printing operations. This step also reuses the lifting drive mechanism of the printing platform 3 to complete the closing action. After the door is closed, the door opening and closing assembly 4 automatically separates. The subsequent lifting stroke of the printing platform 3 is not constrained by the opening and closing door 2 and the door opening and closing assembly 4, ensuring that the printing platform 3 can reach any required working height within the printing cavity.

[0043] In use, after the operator or control system issues an opening command, the printer body 1 controls the printing platform 3 to descend. When the printing platform 3 descends to the door-opening engagement position, the door-opening assembly 4 automatically engages. As the printing platform 3 continues to descend, its vertical linear displacement is converted into the angular displacement of the door 2 through the door-opening assembly 4. When the printing platform 3 reaches the bottom of its travel, the door 2 is fully open, allowing the operator to remove the printed product or perform other operations. When closing is required, the control system controls the printing platform 3 to rise. The door-opening assembly 4 works in the opposite direction with the same engagement relationship, converting the rising linear displacement of the printing platform 3 into the reverse angular displacement of the door 2, driving the door 2 to deflect in the opposite direction until it is fully closed. After the door 2 closes, the printing platform 3 continues to rise, the door-opening assembly 4 disengages, the printing platform 3 returns to the printing working position, and the printer body 1 enters normal printing mode. The entire opening and closing process relies solely on the existing lifting and lowering motion of the printing platform 3, requiring no additional independent drive source. Furthermore, the disengagement and engagement of the door-opening assembly 4 are naturally determined by the lifting and lowering position of the printing platform 3, making the control logic simple and reliable.

[0044] In some embodiments, as shown in the appendix Figure 2 and 3 As shown, the door opening and closing assembly 4 includes a rotating component 4-1 and a driving component 4-2. The rotating component 4-1 is installed at the rotation shaft at the bottom of the door 2, and the rotating component 4-1 is coaxial with the rotation shaft of the door 2. The rotating component 4-1 is fixedly connected to the door 2, and a spiral part is provided on one side of the rotating component 4-1. Since the rotating component 4-1 is coaxial with the rotation shaft of the door 2, the rotational movement of the rotating component 4-1 can be directly transmitted to the door 2 without the need for additional transmission links or gear mechanisms. The transmission path is short and the structure is compact. The coaxial arrangement makes the deflection angle of the door 2 correspond one-to-one with the rotation angle of the rotating component 4-1, which makes it easy to accurately control the opening or closing angle of the door 2 by controlling the lifting stroke of the printing platform 3.

[0045] The drive component 4-2 is installed at the end corner of the printing platform 3 corresponding to the rotating component 4-1. The drive component 4-2 has a connecting part that can be separated from or connected to the helical part of the rotating component 4-1. When the printing platform 3 descends to the connecting position, the connecting part of the drive component 4-2 engages with the helical part of the rotating component 4-1, and the two form a motion coupling. When the printing platform 3 rises to the separating position, the connecting part disengages from the helical part, and the motion coupling is released. The drive component 4-2 drives the rotating component 4-1 to rotate as the printing platform 3 moves up and down, causing the rotating component 4-1 to drive the opening and closing door 2 to rotate and open or close. This structure converts the vertical linear motion of the printing platform 3 into the horizontal rotational motion of the rotating component 4-1 through the helical engagement, realizing the conversion of motion form. Moreover, the helical engagement has the characteristics of smooth transmission and no impact, and the opening and closing process of the opening and closing door 2 is smooth.

[0046] In some embodiments, as shown in the appendix Figure 4 and 5 As shown, the spiral part of the rotating component 4-1 is a spiral blade, and the connecting part of the driving component 4-2 is a slot that slides and adapts to the spiral blade. When the driving component 4-2 moves vertically with the printing platform 3, the slot wall slides in contact with the spiral surface of the spiral blade, and the spiral blade applies a circumferential force to the slot wall, thereby driving the rotating component 4-1 to rotate around its axis. The spiral helix angle of the spiral blade cannot be too small, and it needs to be able to smoothly drive the rotating component 4-1 to rotate when the driving component 4-2 moves up and down; if the spiral helix angle is too small, the circumferential force of the spiral surface is insufficient to overcome the rotational resistance of the rotating component 4-1 and the opening and closing door 2, and even a self-locking phenomenon may occur, causing the driving component 4-2 to be unable to drive the rotating component 4-1 to rotate, and the opening and closing door 2 to be unable to open and close normally. The matching form of the spiral blade and the slot makes the driving component 4-2 and the rotating component 4-1 have a long contact guide length in the vertical direction, and the transition process of engagement and disengagement is smooth.

[0047] In some embodiments, one or both sides of the slotted wall of the drive member 4-2 are rotatably connected to rollers or balls that can contact the helical blades. The rollers or balls convert the sliding friction between the slotted wall of the drive member 4-2 and the helical blades into rolling friction, reducing the motion resistance between the drive member 4-2 and the rotating member 4-1. This allows the printing platform 3 to drive the opening and closing door 2 to deflect with less driving force during the lifting and lowering process, reducing the load on the lifting and lowering drive mechanism of the printing platform 3. At the same time, the rolling contact reduces the wear between the helical blades and the surface of the slotted wall, extends the service life of the opening and closing door assembly 4, and reduces frictional noise during the opening and closing process.

[0048] In some embodiments, as shown in the appendix Figure 6 and 7 As shown, the spiral part of the rotating component 4-1 is a spiral groove, and the connecting part of the driving component 4-2 is a sliding pin that slides and adapts to the spiral groove. When the driving component 4-2 moves vertically with the printing platform 3, the sliding pin is embedded in the spiral groove and slides along the spiral groove. The spiral surface of the spiral groove applies a circumferential component force to the sliding pin, thereby driving the rotating component 4-1 to rotate around its axis. The spiral helix angle of the spiral groove should not be too small, and it needs to be able to smoothly drive the rotating component 4-1 to rotate when the driving component 4-2 moves up and down; if the spiral helix angle is too small, there is also a risk of self-locking, which will cause the rotating component 4-1 to be unable to be driven to rotate. The cooperation between the spiral groove and the sliding pin is a groove and pin constraint cooperation. The sliding pin is restricted to move within the spiral groove. In the cooperative state, the two are not easy to accidentally disengage in the horizontal direction, and the reliability of motion transmission is high. Moreover, the spiral groove has a guiding effect on the sliding pin, which is conducive to maintaining the alignment accuracy of the driving component 4-2 and the rotating component 4-1 during the cooperation and separation process.

[0049] In some embodiments, the sliding pin of the drive member 4-2 is rotatably connected to the drive member 4-2, or the sliding pin rod is rotatably connected to a rotating sleeve. When the sliding pin is rotatably connected to the drive member 4-2, the sliding pin can rotate freely around its own axis within the spiral groove, and the relative motion between the sliding pin and the sidewall of the spiral groove changes from sliding to rolling or semi-rolling. When the sliding pin rod is rotatably connected to the rotating sleeve, the outer circumferential surface of the rotating sleeve contacts and rolls with the sidewall of the spiral groove. All of the above structures can reduce the frictional resistance between the sliding pin and the spiral groove, allowing the drive member 4-2 to drive the rotating member 4-1 to rotate more smoothly when moving vertically, reducing wear on the spiral groove and the sliding pin, while also reducing operating noise during the opening and closing process and improving the durability of the door opening and closing assembly 4.

[0050] In some embodiments, the drive component 4-2 is an independent accessory mounted on the printing platform 3, or a movable base of the printing platform 3, or an integral structure with the printing platform 3. When the drive component 4-2 is an independent accessory, it can be detachably mounted at the end corner of the printing platform 3 by means of fasteners or snap-fit ​​structures, which facilitates individual replacement or maintenance and can be adapted to different models of the printing platform 3. When the drive component 4-2 is a movable base of the printing platform 3, the original movable base in the lifting and lowering movement of the printing platform 3 is used as the drive component 4-2, without the need for additional parts, and the structure is more streamlined. When the drive component 4-2 is an integral structure with the printing platform 3, the drive component 4-2 is formed or processed together with the printing platform 3.

[0051] In some embodiments, the opening and closing door 2 is a single door or a double door in the form of two doors opening in opposite directions. When the opening and closing door 2 is a single door, only one rotating component 4-1 needs to be set at the bottom rotating shaft of the opening and closing door 2, and one driving component 4-2 needs to be set at one end corner of the printing platform 3. The structure is simple and the number of parts is small. When the opening and closing door 2 is a double door in the form of two doors opening in opposite directions, the door opening and closing assembly 4 needs to be installed between the two doors and the corresponding end corners of the printing platform 3. That is, one rotating component 4-1 is installed at the bottom rotating shaft of each door, and one driving component 4-2 is installed at each of the two corresponding end corners of the printing platform 3. When the printing platform 3 is raised and lowered, the two sets of door opening and closing assemblies 4 work simultaneously, driving the two doors to open or close synchronously in opposite directions. The double door form reduces the single-sided deflection space required when the opening and closing door 2 is opened, which is suitable for installation environments where the side space of the printer body 1 is limited.

[0052] In some embodiments, as shown in the appendix Figure 1As shown, a magnetic attraction device 5 is provided between the inner side of the opening and closing door 2 and the frame of the printer body 1 to keep the opening and closing door 2 closed. Specifically, permanent magnets can be installed at the upper corner, lower corner, or both corners of the opening and closing door 2 away from its rotation axis, and ferromagnetic material or another permanent magnet that can be magnetically attracted to the permanent magnets on the opening and closing door 2 can be installed at the corresponding positions on the frame of the printer body 1; or permanent magnets can be installed on the frame of the printer body 1, and ferromagnetic material can be installed on the side of the opening and closing door 2 away from its rotation axis. The magnetic attraction device 5 provides magnetic attraction when the opening and closing door 2 is closed, attracting and holding the opening and closing door 2 in the closed position, preventing the opening and closing door 2 from being accidentally opened due to vibration or airflow disturbance, and ensuring the sealing of the printing cavity during printing; at the same time, the magnitude of the magnetic attraction can be designed to be less than the resistance that the opening and closing door assembly 4 can overcome when driving the opening and closing door 2 to deflect, so that the opening and closing door assembly 4 can smoothly overcome the magnetic attraction to open the door when driving the opening and closing door 2 to open, without the need for an additional unlocking mechanism. When the door assembly 4 is in the separated state, the magnetic attraction device 5 can also keep the door 2 closed, preventing the door 2 from automatically opening due to its own weight or external force after manual closing. Placing the permanent magnet on the side of the door 2 away from the rotation axis maximizes the lever arm of the magnetic attraction point from the rotation axis, allowing sufficient holding torque to be generated with a smaller magnetic attraction force, which helps to reduce the size of the permanent magnet.

[0053] In some embodiments, the printing platform 3 is a conveyor-type ring-shaped printing platform. After the opening and closing door 2 is opened, the ring-shaped printing platform rotates and conveys the completed printed products out of the printing cavity along the conveying direction. Operators or subsequent retrieval mechanisms can directly retrieve the printed products from outside the opening and closing door 2 without having to reach into the printing cavity to retrieve them. At the same time, the continuous conveying of the ring-shaped printing platform, in conjunction with the automatic opening and closing of the opening and closing door 2, enables continuous printing and retrieval operations, improving production efficiency.

[0054] It should be noted that the components or steps in the above embodiments can be interchanged, substituted, added, or deleted. Therefore, the combinations formed by these reasonable permutations and transformations should also fall within the protection scope of this invention, and the protection scope of this invention should not be limited to the above embodiments.

[0055] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to encompass all changes falling within the meaning and scope of equivalents within this invention.

Claims

1. A method for automatically opening and closing the door of a 3D printer, applied to a printer body (1) with a frame structure, the printer body (1) having an opening and closing door (2) capable of horizontal deflection and opening, and a printing platform (3) capable of vertical lifting and lowering; characterized in that, Includes the following steps: S1. Install a detachable door opening and closing assembly (4) between the printing platform (3) and the opening and closing door (2). When the door opening and closing assembly (4) is in a detached state, the opening and closing door (2) can be manually opened or closed. S2, Open the door; Confirm that the door (2) is in the closed state, control the printing platform (3) to descend, and after the printing platform (3) descends to the door opening position, the door opening assembly (4) engages, control the printing platform (3) to descend further, and use the descent of the printing platform (3) as the driving force to drive the door opening assembly (4), so that the door (2) deflects and opens along the horizontal plane, and when the printing platform (3) falls to the bottom, the door (2) reaches the maximum opening position; S3. Close the door; control the printing platform (3) to rise, and use the rise of the printing platform (3) as the driving force to drive the door opening and closing assembly (4), so that the opening and closing door (2) deflects and closes in the opposite direction along the horizontal plane. After the opening and closing door (2) is completely closed, the printing platform (3) continues to rise until the door opening and closing assembly (4) is in a separated state, and the printer body (1) can then perform normal printing operations.

2. The automatic door opening and closing method for a 3D printer as described in claim 1, characterized in that, The door opening and closing assembly (4) includes: A rotating component (4-1) is installed at the bottom rotating shaft of the opening and closing door (2), and the rotating component (4-1) is coaxially arranged with the rotating shaft of the opening and closing door (2). A spiral part is provided on one side of the rotating component (4-1). The driving component (4-2) is installed at the end corner of the printing platform (3) corresponding to the rotating component (4-1). The driving component (4-2) is provided with a connecting part that can be separated from or connected to the spiral part of the rotating component (4-1).

3. The automatic door opening and closing method for a 3D printer as described in claim 2, characterized in that, The spiral part of the rotating component (4-1) is a spiral blade, and the connecting part of the driving component (4-2) is a slot that slides and adapts to the spiral blade.

4. The automatic door opening and closing method for a 3D printer as described in claim 3, characterized in that, The drive component (4-2) has a slot on one side or both sides of the slotted wall connected to a roller or ball that can contact the spiral blade.

5. A method for automatically opening and closing a 3D printer door as described in claim 2, characterized in that, The spiral part of the rotating component (4-1) is a spiral groove, and the connecting part of the driving component (4-2) is a sliding pin that is slidably adapted to the spiral groove.

6. The automatic door opening and closing method for a 3D printer as described in claim 5, characterized in that, The sliding pin of the drive component (4-2) is rotatably connected to the drive component (4-2), or the sliding pin rod is rotatably connected to a rotating sleeve.

7. A method for automatically opening and closing a 3D printer door as described in any one of claims 2 to 6, characterized in that, The drive unit (4-2) is an independent accessory installed on the printing platform (3), or a movable seat of the printing platform (3), or an integral structure with the printing platform (3).

8. The automatic door opening and closing method for a 3D printer as described in claim 1, characterized in that, The opening and closing door (2) is a single door or a double door in the form of opening in opposite directions.

9. A method for automatically opening and closing a 3D printer door as described in claim 1 or 8, characterized in that, A magnetic suction device (5) is provided between the inner side of the opening and closing door (2) and the frame of the printer body (1) to keep the opening and closing door (2) closed.

10. A method for automatically opening and closing a 3D printer door as described in claim 1, characterized in that, The printing platform (3) is a conveyor belt type ring printing platform.

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