Trough capable of quickly assembling and disassembling release film and printer thereof

Abstract

The invention relates to the technical field of 3D printing, in particular to a trough capable of rapidly assembling and disassembling a release film. The trough capable of rapidly assembling and disassembling the release film specifically comprises a trough body, a trough flange, a through accessory and a plurality of buckle mechanisms, the through accessory is obliquely inserted into a gap between the trough body and the trough flange and detachably connected through the buckle mechanisms, the through accessory is located below the trough body, and the trough flange and the buckle mechanisms are arranged on the periphery of the trough body; the through accessory comprises an upper pressing piece, a lower pressing piece and a release film, the release film is located between the upper pressing piece and the lower pressing piece, the upper pressing piece is fixedly connected with the lower pressing piece, and the upper pressing piece is matched with or separated from the bottom of the trough body in an abutting mode. The release film has the advantage that the release film can be replaced quickly and conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and particularly relates to a material tank with a quickly detachable release film and a printer thereof. Background Art

[0002] The basic principle of stereolithography 3D printing is to stack materials layer by layer to construct the three-dimensional shape of a target part. First, the geometric shape of the target part is decomposed into a series of horizontal plane layers. Then, a beam of light with a specific wavelength is used to scan the liquid photosensitive resin layer by layer. At each layer, the area irradiated by the beam will be cured, while the area not affected by the beam remains in a liquid state. By this way of layer-by-layer scanning and curing, the complete shape of the target part is gradually constructed. This method can make the material utilization efficiency close to 100%.

[0003] During the stereolithography 3D printing process, the high-definition screen on the printing platform displays the geometric shape of a single layer of the printed part. The material tank contains the liquid photosensitive resin and is placed above the printing platform. The building platform is immersed in the material tank, and there is a gap for single-layer curing between the building platform and the printing platform. The light on the screen passes through the transparent release film at the bottom of the material tank and irradiates into the resin, causing the resin to cure and adhere to the building platform. The area not affected by the beam remains in a liquid state. The building platform that has completed single-layer curing moves upward through the lead screw in the vertical direction, separating the building platform from the printing platform; the liquid resin will quickly fill the space separated in the middle; when the building platform is separated upward to a certain height and the liquid resin fills the gap between the two platforms, the building platform descends and maintains the gap required for single-layer curing with the printing platform, which prepares for the printing of the next layer. The vertical separation process is crucial for maintaining the accuracy and quality of the part. It is necessary to make the gap for each curing between the building platform and the printing platform exactly the same, and the building platform does not move horizontally to ensure the quality of part printing.

[0004] During the release process of each layer of printing, the building plate needs to be away from the screen. Wait for the resin to fill the gap between the building plate and the screen, and then be squeezed out by the building plate. During this process, the resin is repeatedly cured, and the cured model is peeled off from the release film at the bottom of the material tank. Therefore, after the release film is used a certain number of times, it will turn white. It has a certain negative impact on the printing quality; when the abnormal situation of the release film turning white occurs, it is necessary to replace the release film of the material tank in time. Therefore, during the use of the stereolithography printer, it is necessary to regularly replace the release film of the material tank to ensure the smooth completion of printing.

[0005] For the device using the above structure, the release film in the material tank needs to be replaced regularly. The replacement method is to remove the screws of the two square-shaped parts fixing the release film from the bottom of the material tank one by one with a screwdriver. The second step is to remove the screws for fixing and pressing the release film from the middle of the two squares one by one. The whole process of removing the release film is relatively cumbersome.

[0006] During the process of installing the release film, the user needs to place the relative positions of the release film and the release film fixing part, and then lock the screws one by one to fix the release film fixing part and the release film together. In the second step, the release film fixing part is locked one by one with screws and installed at the bottom of the material tank. The whole installation process is rather cumbersome and requires external tools, with a relatively large installation difficulty.

[0007] Therefore, in view of the deficiencies of the prior art, a material tank for quickly installing and disassembling a release film and its printer are provided. Summary of the Invention

[0008] In order to overcome the deficiencies of the prior art, the present invention provides a material tank for quickly installing and disassembling a release film and its printer, aiming to solve the problem of troublesome replacement of the release film.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions: A material tank for quickly installing and disassembling a release film, comprising: A material tank body, a material tank edge, a through fitting, and a plurality of buckle mechanisms. The through fitting is obliquely inserted into the gap between the material tank body and the material tank edge and is detachably connected through the buckle mechanisms. The through fitting is located below the material tank body, and the material tank edge and the buckle mechanisms are arranged around the material tank body; The through fitting includes an upper pressing piece, a lower pressing piece, and a release film. The release film is located between the upper pressing piece and the lower pressing piece. The upper pressing piece is fixedly connected to the lower pressing piece, and the upper pressing piece is in abutting cooperation or separation with the bottom of the material tank body.

[0010] As a further improvement of the technical solution of the present invention, the buckle mechanism includes a rotating handle, a pressing column, and a pressing piece buckle. The pressing column is fixedly connected to the material tank body. The rotating handle is rotatably connected to the pressing column. The rotating handle is connected to the pressing piece buckle, and the pressing piece buckle is in top abutting connection or separation with the upper pressing piece.

[0011] As a further improvement of the technical solution of the present invention, the buckle mechanism includes a self-locking state and an unlocking state: When in the self-locking state: the pressing piece buckle hooks the upper pressing piece, the rotating handle abuts against the material tank body, the rotating handle is perpendicular to the pressing column, and the rotating handle pulls up the upper pressing piece through the pressing piece buckle; When in the unlocking state: the pressing piece buckle is separated from the upper pressing piece.

[0012] As a further improvement of the technical solution of the present invention, the material tank edge is provided with a cavity and a limiting base. The upper pressing piece is partially inserted into the cavity, and the limiting base is in abutting cooperation with the lower pressing piece.

[0013] As a further improvement of the technical solution of the present invention, the upper pressing piece is provided with a hook body adapted to the pressing piece buckle, and the hook body protrudes from the lower pressing piece.

[0014] As a further improvement of the technical solution of the present invention, the pressing column is provided with a convex block, and the convex block is in contact with or separated from the upper pressing piece.

[0015] As a further improvement of the technical solution of the present invention, it further includes a temperature sensor arranged inside the material tank body, and the temperature sensor is used to detect the temperature of the resin inside the material tank body during the printing process.

[0016] A printer, applicable to the material tank for quickly installing and disassembling the release film described above, further includes a back plate mechanism, a building plate, and a middle plate mechanism. The back plate mechanism is fixedly connected to the building plate, the building plate is located above the material tank, and the material tank is fixedly connected to the middle plate mechanism.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: In the material tank for quickly installing and disassembling the release film and the printer provided by the present invention, the release film, the upper pressing member, and the lower pressing member are made into universal fittings. When the user replaces the release film, the user directly replaces the universal fittings, which greatly saves the replacement time of the user. A buckle mechanism is added to the bottom of the material tank body. The buckle mechanism replaces the screw locking. After the user replaces the universal fittings, the user only needs to lock the universal fittings with the buckle mechanism, and there is no need to lock the screws one by one, which greatly improves the time for the user to replace the release film when using the printer, making the replacement of the release film more convenient and fast. The material tank for quickly installing and disassembling the release film and the printer of the present invention have the characteristics of quickly and conveniently replacing the release film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further describes the technology of the present invention in detail with reference to the drawings and specific embodiments: Figure 1 is a three-dimensional structural schematic diagram of the printer of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the material tank for quickly installing and disassembling the release film of the present invention; Figure 3 is a cross-sectional view of the buckle mechanism in the unlocked state in the material tank for quickly installing and disassembling the release film of the present invention; Figure 4 is Figure 3 an enlarged structural schematic diagram of part A in Figure 5 is a cross-sectional view of the buckle mechanism in the self-locking state in the material tank for quickly installing and disassembling the release film of the present invention; Figure 6 is Figure 5 an enlarged structural schematic diagram of part B in Figure 7It is an exploded view of the through-fitting in the material tank for the quick installation and disassembly of the release film of the present invention.

[0019] In the figure: 1. Material tank body; 2. Material tank edge; 21. Cavity; 22. Limit base; 3. Through-fitting; 31. Upper pressing piece; 311. Hook body; 32. Lower pressing piece; 33. Release film; 4. Buckle mechanism; 41. Rotating handle; 42. Pressing column; 43. Pressing piece buckle; 5. Back plate mechanism; 6. Building plate; 7. Middle plate mechanism. Specific embodiments The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with embodiments and drawings, so as to fully understand the purpose, solution and effects of the present invention. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0020] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right, etc. descriptions used in the present invention are only relative to the mutual positional relationship of the components of the present invention in the drawings.

[0021] Referring to Figures 1 to 7 , a material tank for quickly installing and disassembling a release film, including a material tank body 1, a material tank edge 2, a through-fitting 3 and four buckle mechanisms 4; In one embodiment, the through-fitting 3 is obliquely inserted into the gap between the material tank body 1 and the material tank edge 2 and is detachably connected through the buckle mechanism 4. The through-fitting 3 is located below the material tank body 1, and the material tank edge 2 and the buckle mechanism 4 are arranged around the material tank body 1; Referring to Figure 7 As shown, the through-fitting 3 includes an upper pressing piece 31, a lower pressing piece 32 and a release film 33. The release film 33 is located between the upper pressing piece 31 and the lower pressing piece 32. The upper pressing piece 31 and the lower pressing piece 32 are fixedly connected, and the upper pressing piece 31 abuts or separates from the bottom of the material tank body 1.

[0022] Among them, the release film 33, the upper pressing member, and the lower pressing member are made into a universal fitting 3. When the user replaces the release film 33, the user directly replaces the universal fitting 3, which greatly saves the replacement time of the user. A buckle mechanism 4 is added to the bottom of the material tank body 1. The buckle mechanism 4 replaces the screw locking. After the user replaces the universal fitting 3, the user only needs to lock the universal fitting 3 with the buckle mechanism 4, without locking the screws one by one. This greatly improves the time for the user to replace the release film 33 when using the printer, making the replacement of the release film 33 more convenient and fast. The material tank for quickly installing and removing the release film and its printer of the present invention have the characteristics of quickly and conveniently replacing the release film 33. By improving the installation method of the release film 33, the replacement difficulty of the release film 33 is reduced, and the time for replacing the release film 33 is reduced. And during the whole installation and disassembly process, no other tools are needed, which greatly reduces the use difficulty of the material tank of the stereolithography printer and makes the process of replacing the release film 33 by the material tank simpler and more efficient. In summary, this solution comprehensively applies a number of innovative technologies to provide users with a more convenient, efficient, and high-quality printing experience.

[0023] In one embodiment, referring to Figures 3 - 6 as shown, the buckle mechanism 4 includes a rotating handle 41, a pressing column 42, and a pressing piece buckle 43. The pressing column 42 is fixedly connected to the material tank body 1. The rotating handle 41 is rotatably connected to the pressing column 42. The rotating handle 41 is rotatably connected to the pressing piece buckle 43. The pressing piece buckle 43 is in abutting connection or separation with the upper pressing piece 31.

[0024] In one embodiment, the buckle mechanism 4 includes a self-locking state and an unlocking state: when in the self-locking state: the pressing piece buckle 43 hooks the upper pressing piece 31, the rotating handle 41 abuts against the material tank body 1, the rotating handle 41 is perpendicular to the pressing column 42, and the rotating handle 41 pulls up the upper pressing piece 31 through the pressing piece buckle 43, and the pressing piece buckle 43 is in a tightened state; when in the unlocking state: the pressing piece buckle 43 is separated from the upper pressing piece 31, and the pressing piece buckle 43 is in a relaxed state.

[0025] In one embodiment, the through fitting 3 includes an installation state and a disassembly state: when in the installation state, the buckle mechanism 4 is in a self-locking state, the through fitting 3 is obliquely inserted into the gap between the trough body 1 and the trough retaining edge 2, the pressing plate buckle 43 hooks the upper pressing plate 31, and the rotating handle 41 is turned toward the trough body 1 (upward) until the rotating handle 41 is parallel to the edge of the trough body 1, the rotating handle 41, the pressure column 42 and the pressing plate buckle 43 form a self-locking structure, and the pressing plate buckle 43 pulls the upper pressing plate 31 upward to make the through fitting 3 fit tightly with the bottom of the trough body 1; when in the disassembly state, the buckle mechanism 4 is in an unlocked state, and the rotating handle 41 is turned away from the trough body 1 (downward) to release the self-locking, and the pressing plate buckle 43 moves downward to separate from the upper pressing plate 31, so that the through fitting 3 is separated from the trough body 1, and the through fitting 3 is pulled out along the pressing plate direction, so that the through fitting 3 can be easily removed. The other two sides of the trough body 1 also use the same buckle mechanism 4 to buckle the through fitting 3, so that the transparent through fitting 3 is tightly attached to or separated from the bottom of the trough body 1.

[0026] In one embodiment, referring to Figure 4 As shown, the trough retaining edge 2 is provided with a cavity 21 and a limiting base 22, the upper pressing plate 31 is partially inserted into the cavity 21, and the limiting base 22 is abutted against the lower pressing plate 32. Preferably, the cross section of the trough retaining edge 2 is C-shaped.

[0027] In one embodiment, the upper pressing plate 31 is provided with a hook 311 adapted to the pressing plate buckle 43 , and the hook 311 protrudes from the lower pressing plate 32 .

[0028] In one embodiment, referring to Figure 6 As shown, the pressure column 42 is provided with a protrusion, which abuts against or separates from the upper pressing plate 31. When the buckle mechanism 4 is in a self-locking state, that is, the through fitting 3 is fixedly installed with the trough body 1, the protrusion abuts against the upper pressing plate 31; conversely, when the buckle mechanism 4 is in an unlocking state, that is, the through fitting 3 is replaced, the protrusion separates from the upper pressing plate 31.

[0029] In one embodiment, the material tank also includes a temperature sensor arranged inside the material tank body 1, which is used to detect the temperature of the resin inside the material tank body 1 during the printing process. The temperature of the resin in the material tank body 1 can be monitored in real time to keep the resin temperature continuously at the optimal printing temperature.

[0030] A printer, suitable for the above-mentioned quick assembly and disassembly release film 33 material slot, referring to Figure 1 As shown, it also includes a back plate mechanism 5, a building plate 6 and a middle plate mechanism 7. The back plate mechanism 5 is fixedly connected to the building plate 6. The building plate 6 is located above the material trough. The material trough is fixedly connected to the middle plate mechanism 7.

[0031] The other contents of the material trough for the quick assembly and disassembly release film of the present invention refer to the prior art and will not be described in detail here.

[0032] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Therefore, any modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0034] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A trough for quick assembly and disassembly of release films, characterized in that: include: A trough body, a trough rib, a through fitting and a plurality of buckle mechanisms, wherein the through fitting is obliquely inserted into the gap between the trough body and the trough rib and is detachably connected through the buckle mechanism, the through fitting is located below the trough body, and the trough rib and the buckle mechanism are arranged around the trough body; The through fitting comprises an upper pressing sheet, a lower pressing sheet and a release film, wherein the release film is located between the upper pressing sheet and the lower pressing sheet, the upper pressing sheet is fixedly connected to the lower pressing sheet, and the upper pressing sheet is abutted against or separated from the bottom of the trough body.

2. A trough for quick assembly and disassembly of release films according to claim 1, characterized in that: The buckle mechanism includes a rotating handle, a pressure column and a pressure sheet buckle, the pressure column is fixedly connected to the material trough body, the rotating handle is rotatably connected to the pressure column, the rotating handle is connected to the pressure sheet buckle, and the pressure sheet buckle is connected or separated from the upper pressure sheet.

3. A trough for quick assembly and disassembly of release films according to claim 2, characterized in that: The buckle mechanism includes a self-locking state and an unlocking state: When in the self-locking state: the pressing plate buckle hooks the upper pressing plate, the rotating handle abuts against the material trough body, the rotating handle is vertically arranged with the pressing column, and the rotating handle pulls the upper pressing plate upward through the pressing plate buckle; When in the unlocked state: the pressing plate buckle is separated from the upper pressing plate.

4. A trough for quick assembly and disassembly of release films according to claim 1, characterized in that: The trough retaining edge is provided with a cavity and a limiting base, the upper pressing piece is partially inserted into the cavity, and the limiting base is abutted and matched with the lower pressing piece.

5. A trough for quick assembly and disassembly of release films according to claim 2, characterized in that: The upper pressing sheet is provided with a hook body matched with the pressing sheet buckle, and the hook body protrudes from the lower pressing sheet.

6. A trough for quick assembly and disassembly of release films according to claim 2, characterized in that: The pressing column is provided with a convex block, and the convex block is in contact with or separated from the upper pressing sheet.

7. A trough for quick assembly and disassembly of release films according to claim 1, characterized in that: It also includes a temperature sensor arranged inside the material tank body, and the temperature sensor is used to detect the temperature of the resin inside the material tank body during printing.

8. A printer, suitable for the material slot of the quick-assembly and detachable release film according to any one of claims 1 to 7, characterized in that: It also includes a back plate mechanism, a building plate and a middle plate mechanism, wherein the back plate mechanism is fixedly connected to the building plate, the building plate is located above the material trough, and the material trough is fixedly connected to the middle plate mechanism.

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