Printer breathing type trough

Abstract

A printer breathing type trough comprises an imaging assembly, a trough body and a release film, the imaging assembly comprises projection glass, the trough body is fixedly arranged on the projection glass, the release film is fixedly arranged at the lower end of the interior of the trough body, and a gap is formed between the release film and the projection glass. A breathing assembly is fixedly arranged on the side wall of the trough body and used for introducing gas into the gap or discharging gas out of the gap. By arranging the breathing assembly, gas can be actively introduced into the gap to break the vacuum negative pressure between the release film and the projection glass, so that the release film is recovered to be flexible, and a model is separated from the release film in a non-rigid face-to-face manner when the model is separated from the release film; and the gas in the gap can be actively extracted after the model rises, and the air pressure in the gap is reduced, so that the release film is separated from the model under the action of atmospheric pressure, and the automation of model separation is realized.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, and more specifically, to a printer breathing feed trough. Background Technology

[0002] A pull-up 3D photopolymer printer is a device that uses photopolymerization technology (usually liquid photosensitive resin) for 3D printing. It uses liquid photosensitive resin as the printing material, which is cured by being exposed to a light source (such as ultraviolet light). After each exposure, the platform slightly rises by one layer's thickness, thus building the entire model layer by layer.

[0003] In existing technologies, pull-type 3D photopolymer printers utilize a material tank with a transparent, flexible release liner at the bottom. During printing, the resin in the tank presses against the release liner, binding it tightly to a projection glass below the tank. This forces the air between the release liner and the projection glass out, creating a significant vacuum. This causes the release liner to lose its flexibility, resulting in a rigid, surface-to-surface separation when the model moves upwards or the platform moves downwards. This generates substantial pull forces, producing a "pop" sound during release. The model, release liner, and projection glass are all impacted, negatively affecting the quality of the printed model, the lifespan of the release liner, and the lifespan of the projection glass. Current solutions include low-speed pull-out or the use of oxygen-permeable release liner; however, low-speed pull-out reduces printer efficiency, while oxygen-permeable release liner is expensive, increasing production costs.

[0004] Therefore, it is necessary for the inventors to design a new printer breathing feed trough to overcome the above problems. Summary of the Invention

[0005] The main objective of this application is to provide a printer breathing material trough to solve the problem of rigid surface separation when the model and release film separate in related technologies.

[0006] To achieve the above objectives, this application provides a printer breathing feeder, including an imaging component, a feeder body, and a release film. The imaging component includes a projection glass, the feeder body is fixedly disposed on the projection glass, the release film is fixedly disposed at the lower end inside the feeder body, and there is a gap between the release film and the projection glass. A breathing component is fixedly disposed on the side wall of the feeder body, and the breathing component is used to introduce or discharge gas into the gap.

[0007] Preferably, the breathing assembly includes an exhalation assembly and an inhalation assembly respectively disposed on both sides of the feed trough body.

[0008] Preferably, the exhalation assembly includes a first mounting cavity, an exhaust power component, and an exhaust valve. The first mounting cavity is formed on the feed trough body. The exhaust power component and the exhaust valve are both fixedly installed in the first mounting cavity. The exhaust valve is connected to the gap. The exhaust power component is used to discharge the gas in the gap through the exhaust valve.

[0009] Preferably, the exhaust power component includes an electrical connection module and a piezoelectric ceramic plate, wherein the piezoelectric ceramic plate is electrically connected to the electrical connection module and both are detachably connected to the first mounting cavity.

[0010] Preferably, a sealing side cover is also fixedly installed at the outer end of the first mounting cavity.

[0011] Preferably, the suction assembly includes a second mounting cavity, a suction power component, and an air inlet valve. The second mounting cavity is formed on the material trough body. The suction power component and the air inlet valve are both fixedly installed in the second mounting cavity. The air inlet valve is connected to the gap. The suction power component is used to introduce gas from the air inlet valve into the gap.

[0012] Preferably, a locking groove assembly is also fixedly provided on the projection glass, and the material trough body is fixedly provided on the projection glass through the locking groove assembly.

[0013] Preferably, a power supply module is also fixedly installed on the projection glass, and the power supply module is electrically connected to the power receiving module.

[0014] Preferably, a sealing element is also fixedly provided between the bottom of the material tank body and the projection glass.

[0015] The printer breathing material trough provided by this utility model has the following advantages compared with the prior art:

[0016] By setting up a breathing component, gas can be actively introduced into the gap to break the vacuum negative pressure between the release film and the projection glass, restoring the release film to its flexibility, so that the model and the release film do not separate rigidly surface by surface; and the gas in the gap can be actively extracted after the model rises, reducing the air pressure in the gap, so that the release film separates from the model under the action of atmospheric pressure, thus realizing the automation of model separation. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is a structural diagram of the material trough body of this utility model;

[0020] Figure 3 This is an exploded view of the exhalation component of this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the material trough body of this utility model.

[0022] The components include: 1. Feed trough body; 2. Release film; 3. Gap; 4. Exhalation assembly; 401. First mounting cavity; 402. Exhaust power component; 4021. Power connection module; 4022. Piezoelectric ceramic sheet; 403. Exhaust valve; 5. Inhalation assembly; 6. Sealing side cover; 7. Locking groove assembly; 8. Power supply module; 9. Sealing component; 10. Projection glass. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first," "second," etc., used in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0027] In addition, the term "multiple" should mean two or more.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] like Figures 1 to 4 As shown, a printer's breathing material tank includes an imaging component, a material tank body 1, and a release film 2. The imaging component includes a projection glass 10. The material tank body 1 is fixedly mounted on the projection glass 10. The release film 2 is fixedly mounted inside the lower end of the material tank body 1. A gap 3 exists between the release film 2 and the projection glass 10. A breathing component is fixedly mounted on the side wall of the material tank body 1. The breathing component is used to introduce or expel gas into the gap 3. Specifically, ultraviolet light passes through the projection glass 10 and the release film 2 and irradiates the resin inside the material tank body 1. After the resin cures and forms a mold, the model moves upward to print the next layer of the model. Before the model moves upward, the breathing component actively introduces an appropriate amount of gas into the gap 3 to break the vacuum negative pressure between the release film 2 and the projection glass 10, restoring the flexibility of the release film 2 and reducing the demolding force between the release film 2 and the model. After the model moves upward, it adheres to the release film 2, causing the flexible release film 2 to move upward along with it. During the separation of the model and release film 2, the gas in the gap 3 is actively and slowly extracted by the breathing component. At this time, the release film 2 tends to move closer to the projection glass 10 under atmospheric pressure, thus separating the release film 2 from the bottom of the model. If the gas in the gap 3 is quickly extracted, the release film 2 will adhere to the projection glass 10, which can improve the resin filling efficiency and ensure the stability of the release film 2 during resin curing, thereby improving printing accuracy.

[0030] This embodiment, by setting up a breathing component, can actively introduce gas into the gap 3 to break the vacuum negative pressure between the release membrane 2 and the projection glass 10, so that the release membrane 2 can regain its flexibility, and thus the separation of the model from the release membrane 2 is not a rigid surface separation; it can also actively extract the gas from the gap 3 after the model rises, reduce the air pressure in the gap 3, so that the release membrane 2 separates from the model under the action of atmospheric pressure, thus realizing the automation of model separation.

[0031] The breathing assembly includes an exhalation assembly 4 and an inhalation assembly 5 respectively disposed on both sides of the feed trough body 1. Specifically, the exhalation assembly 4 is used to expel gas from the gap 3, and the inhalation assembly 5 is used to introduce gas into the gap 3.

[0032] The exhalation assembly 4 includes a first mounting cavity 401, an exhaust power component 402, and an exhaust valve 403. The first mounting cavity 401 is formed on the feed trough body 1. The exhaust power component 402 and the exhaust valve 403 are both fixedly installed in the first mounting cavity 401. The exhaust valve 403 is connected to the gap 3, and the exhaust power component 402 is used to discharge the gas in the gap 3 through the exhaust valve 403. The exhaust power component 402 includes an electrical connection module 4021 and a piezoelectric ceramic plate 4022. The piezoelectric ceramic plate 4022 is electrically connected to the electrical connection module 4021 and is detachably connected to the first mounting cavity 401.

[0033] Specifically, there are two exhaust valves 403. One exhaust valve 403 connects the gap 3 to the first mounting cavity 401, and the other exhaust valve 403 connects the first mounting cavity 401 to the outside. The exhaust valves 403 are one-way valves, meaning the gas can only flow from the gap 3 to the first mounting cavity 401 and then to the outside. When the piezoelectric ceramic plate 4022 is energized via the power module 4021, the piezoelectric ceramic plate 4022 stimulates gas flow, causing the gas to be discharged outwards from the gap 3.

[0034] A sealing side cover 6 is also fixedly installed at the outer end of the first mounting cavity 401. Specifically, the sealing side cover 6 is used to seal the first mounting cavity 401.

[0035] The inhalation assembly 5 includes a second mounting cavity, an inhalation power component, and an inlet valve. The second mounting cavity is formed on the feed trough body 1. The inhalation power component and the inlet valve are both fixedly installed in the second mounting cavity. The inlet valve is connected to the gap 3, and the inhalation power component is used to introduce gas from the inlet valve into the gap 3. Specifically, (not shown), the inhalation assembly 5 and the exhalation assembly 4 are arranged in the same way, the only difference being that the outlet valve 403 is replaced with an inlet valve.

[0036] A locking groove assembly 7 is also fixedly installed on the projection glass 10, and the material trough body 1 is fixedly installed on the projection glass 10 through the locking groove assembly 7. Specifically, the material trough body 1 is fixedly installed through the locking groove assembly 7, and can be removed from the locking groove assembly 7 when the material trough body 1 is being maintained or repaired. The structure of the locking groove assembly 7 is not specifically limited here; any structure that allows the material trough body 1 to be detachably connected to the projection glass 10 can be used.

[0037] A power supply module 8 is also fixedly mounted on the projection glass 10, and the power supply module 8 is electrically connected to the power receiving module 4021. Specifically, the power supply module 8 is connected to the power receiving module 4021 to supply power to the piezoelectric ceramic sheet 4022.

[0038] A sealing element 9 is also fixedly installed between the bottom of the material tank body 1 and the projection glass 10. Specifically, the sealing element 9 can be a rubber sealing ring, so that the gap 3 between the release film 2 and the projection glass 10 is a sealed space, preventing outside air from entering the gap 3 between the material tank body 1 and the projection glass 10.

[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A printer breathing feed trough, characterized in that: The device includes an imaging component, a material tank body (1), and a release film (2). The imaging component includes a projection glass (10). The material tank body (1) is fixedly disposed on the projection glass (10). The release film (2) is fixedly disposed at the lower end inside the material tank body (1). There is a gap (3) between the release film (2) and the projection glass (10). A breathing component is fixedly disposed on the side wall of the material tank body (1). The breathing component is used to introduce or discharge gas into the gap (3).

2. The printer breathing feed trough as described in claim 1, characterized in that: The breathing assembly includes an exhalation assembly (4) and an inhalation assembly (5) respectively disposed on both sides of the feed trough body (1).

3. A printer breathing feed trough as described in claim 2, characterized in that: The exhalation assembly (4) includes a first mounting cavity (401), an exhaust power component (402), and an exhaust valve (403). The first mounting cavity (401) is opened on the feed trough body (1). The exhaust power component (402) and the exhaust valve (403) are both fixedly installed in the first mounting cavity (401). The exhaust valve (403) is connected to the gap (3). The exhaust power component (402) is used to discharge the gas in the gap (3) from the exhaust valve (403).

4. A printer breathing feed trough as described in claim 3, characterized in that: The exhaust power component (402) includes an electrical connection module (4021) and a piezoelectric ceramic plate (4022). The piezoelectric ceramic plate (4022) is electrically connected to the electrical connection module (4021) and is detachably connected to the first mounting cavity (401).

5. A printer breathing feed trough as described in claim 4, characterized in that: A sealing side cover (6) is also fixedly installed at the outer end of the first mounting cavity (401).

6. A printer breathing feed trough as described in claim 2, characterized in that: The suction assembly (5) includes a second mounting cavity, a suction power component, and an air inlet valve. The second mounting cavity is opened on the material trough body (1). The suction power component and the air inlet valve are both fixedly installed in the second mounting cavity. The air inlet valve is connected to the gap (3). The suction power component is used to pass gas from the air inlet valve into the gap (3).

7. A printer breathing feed trough as described in claim 1, characterized in that: A locking groove assembly (7) is also fixedly installed on the projection glass (10), and the material trough body (1) is fixedly installed on the projection glass (10) through the locking groove assembly (7).

8. A printer breathing feed trough as described in claim 4, characterized in that: A power supply module (8) is also fixedly installed on the projection glass (10), and the power supply module (8) is electrically connected to the power receiving module (4021).

9. A printer breathing feed trough as described in claim 1, characterized in that: A sealing element (9) is also fixedly provided between the bottom of the material tank body (1) and the projection glass (10).

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