CN215661862U - 3D printer and prevention of seepage material structure thereof - Google Patents

Abstract

The utility model provides a 3D printer and an anti-seepage structure thereof, and relates to the technical field of 3D printers. Wherein, the anti-seepage structure comprises a base, a screen component, an isolation film and a material storage component. The screen assembly is disposed on the base. The isolation film is arranged on the base and can cover the screen assembly. Storage component disposes on the barrier film for hold 3D and print the raw materials. The storage assembly comprises a release film arranged on the isolation film and a material cylinder arranged on the release film. Through set up the one deck barrier film between screen pack and storage component, can effectually prevent that the 3D printing raw materials in the storage component from revealing.

Description

3D printer and prevention of seepage material structure thereof

Technical Field

The utility model relates to the field of 3D printers, in particular to a 3D printer and an anti-seepage structure thereof.

Background

LCD photocuring 3D printing, through ultraviolet light catalysis photosensitive resin solidification of specific position and form required shape. In the prior art, the 3D model is gradually raised by disposing the light source below the material vat, thereby forming a desired shape layer by layer.

In the prior art, the material cylinder for LCD photocuring 3D printing is generally a tubular geometry, and a transparent isolation film is laid under the material cylinder to form a cavity for storing photosensitive resin. The cavity is isolated from the equipment such as a light source and a screen below the cavity through an isolation film.

Resin is placed in the cavity for a long time and slowly permeates out from a gap between the isolating membrane and the material cylinder, so that all parts of the 3D printing equipment are bonded together, parts of the 3D printer are easily damaged, and inconvenience is caused in equipment maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model provides a 3D printer and an anti-seepage structure thereof, and aims to solve the problem that 3D printing raw materials in a material cylinder are easy to leak when the 3D printer is placed for a long time.

The first aspect,

In order to solve the technical problem, the embodiment of the utility model provides a material seepage prevention structure of a 3D printer, which comprises a base, a screen assembly, an isolation film and a material storage assembly.

The screen component is arranged on the base; the isolation film is arranged on the base and can cover the screen assembly; the storage component is arranged on the isolation film and used for containing 3D printing raw materials; the storage assembly comprises a release film and a material cylinder, wherein the release film is arranged on the isolation film, and the material cylinder is arranged on the release film.

Optionally, the magazine assembly further comprises a pressing frame disposed on the material cylinder; the pressing frame is used for pressing and abutting against the release film.

Optionally, the pressing frame is fixed to the material cylinder through a fastener;

optionally, the pressing frame is made of a metal material;

optionally, the outline area of the release film is larger than that of the material cylinder;

optionally, the contour area of the isolation film is larger than the contour area of the material cylinder.

Preferably, the outline area of the release film is larger than that of the release film.

Optionally, the impermeable material structure further comprises a support configured to the base; the support is used for improving the surface flatness.

Optionally, the support is provided with a film groove for accommodating the isolation film; the depth of the film groove is less than or equal to the thickness of the isolation film, and the film groove is used for accommodating the isolation film;

optionally, the support is provided with a through hole located in the film groove; the through hole is used for the screen component to pass through;

optionally, the support is provided with a screen slot along the periphery of the through hole;

the periphery of the screen component extends outwards to form an annular bulge; the annular protrusion can be embedded in the screen groove so that the surface of the screen assembly is flush with the surface of the film groove;

the supporting piece is approximately rectangular and is fixed on the base through fasteners positioned at four corners of the rectangle.

Optionally, the material cylinder is of a tubular structure and is provided with an abutting part extending outwards;

the base includes a pressing mechanism to apply pressure to the abutting portion;

the material cylinder is provided with a blind hole positioned in the abutting part; the blind hole is used for being matched with the pressing mechanism so as to position and fix the material cylinder;

optionally, the compression mechanism is a thumbscrew.

Optionally, the base comprises a pair of said hold-down mechanisms; the pair of pressing mechanisms are symmetrically arranged;

the cylinder periphery extends outwards to form the abutting part; the material cylinder is symmetrically provided with a pair of blind holes.

Optionally, the barrier membrane is a water-condensation membrane. The base is provided with a fixing hole; the screen assembly comprises a fixing part which can be embedded into the fixing hole;

the base is at least partially made of ferromagnetic material; at least part of the fixing part is configured to have magnetism, so that the fixing part can be magnetically fixed on the base when being embedded into the fixing hole.

Optionally, a positioning hole is arranged on the side surface of the fixing part;

the base is provided with a positioning bulge positioned on the side surface of the fixing hole; the positioning bulge is used for being matched with the positioning hole to position the position of the screen assembly on the base;

optionally, the base includes a wave ball screw disposed on a sidewall of the fixing hole to form the positioning protrusion;

optionally, the screen assembly includes a magnetic member disposed on a side surface of the fixing portion, so that a local position of the side surface of the fixing portion has magnetism.

The second aspect,

An embodiment of the present invention provides a 3D printer, which includes the impermeable structure according to any one of the paragraphs above.

By adopting the technical scheme, the utility model can obtain the following technical effects:

according to the embodiment of the utility model, the isolation film is arranged between the screen assembly and the storage assembly, so that the 3D printing raw material in the storage assembly can be effectively prevented from leaking.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an isometric view of a barrier construction provided in accordance with a first embodiment of the present invention.

Fig. 2 is an exploded view of a barrier construction provided in accordance with a first embodiment of the present invention.

Fig. 3 is an exploded view of a support member of a base provided in accordance with a first embodiment of the present invention.

Fig. 4 is an exploded view of a magazine assembly according to a first embodiment of the present invention.

Fig. 5 is a half-sectional view provided by the first embodiment of the present invention.

The labels in the figure are: 1-annular bulge, 2-film groove, 3-screen groove, 4-hand screw, 5-support piece, 6-base, 7-storage component, 8-isolation film, 9-screen component, 10-material cylinder, 11-pressing frame and 12-release film.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model is described in further detail below with reference to the following detailed description and accompanying drawings:

the first embodiment,

As shown in fig. 1 to 5, an embodiment of the present invention provides a material seepage prevention structure for a 3D printer, which includes a base 6, a screen assembly 9, a separation film 8, and a storage assembly 7.

The screen assembly 9 is disposed on the base 6. The barrier film 8 is disposed on the base 6 and can cover the screen assembly 9. The storage component 7 is arranged on the isolation film 8 and used for containing 3D printing raw materials. The storing assembly 7 comprises a release film 12 arranged on the isolation film 8 and a material cylinder 10 arranged on the release film 12.

In the prior art, the material cylinder 10 is a hollow tubular geometric body, and the photosensitive resin in the material cylinder 10 is separated from the screen by a release film 12 (i.e., a separation film) disposed between the material cylinder 10 and the screen.

In the use of the DLP photocuring molding apparatus and the LCD photocuring molding apparatus, since the photosensitive resin is slightly spilled out in the operation apparatus and the resin is left in the molding cylinder for a long time, the photosensitive resin (i.e., the raw material for 3D printing) may permeate out from the gap between the material cylinder 10 and the release film 12 and flow into the respective gaps of the 3D printing apparatus. Over time, these resins cure, thereby adhering the parts of the device to each other. It is easy to damage the parts of the equipment and causes inconvenience in the maintenance of the equipment.

In the present embodiment, the separation membrane 8 is a water condensation membrane. The water-condensation membrane is the prior art, and the specific structure, materials and the like thereof are not described in detail herein. The hydrogel film has a thicker thickness, better flexibility and larger deformation amount. According to the embodiment of the utility model, the hydrogel film is arranged between the material storage component 7 and the screen component 9 and can deform, so that the release film 12 and the hydrogel film can be completely attached to the bottom of the material cylinder 10, a good sealing effect is achieved, and the photosensitive resin in the material cylinder 10 is effectively prevented from leaking. Moreover, the hydrogel has high light transmittance, and the light curing effect of the LCD cannot be influenced.

In other embodiments, the isolation film 8 may be a plastic film that transmits light, or an existing film such as a tempered glass film, that also serves to separate both the chassis 6 and the screen assembly 9 from the magazine assembly 7. The photosensitive resin is prevented from leaking.

As shown in fig. 4, in an alternative embodiment of the present invention, on the basis of the above-mentioned embodiment, the magazine assembly 7 further includes a pressing frame 11 disposed on the material cylinder 10. The pressing frame 11 is pressed against the release film 12. In particular, the bowl 10 is a hollow tubular geometry with a thin wall thickness to facilitate material savings and weight savings. In the present embodiment, the pressing frame 11 is fixed to the material cylinder 10 by a fastener. The arrangement of the pressing frame 11 can ensure that the bottom of the storage assembly 7 is smooth, so that the sealing performance between the storage assembly 7 and the release film 12 is improved.

Preferably, the pressing frame 11 is made of a metal material. The material cylinder 10 is made of transparent plastic. The plastic material cylinder 10 can be considerably reduced in weight. The rigidity of the bottom of the material cylinder 10 can be improved well by the pressing frame 11 made of metal material. The contact surface between the storage component 7 and the release film 12 is ensured to be a plane, and the leakage condition caused by the generation of gaps due to the deformation of the storage component 7 is avoided.

As shown in fig. 2, on the basis of the above embodiment, in an alternative embodiment of the present invention, the outline area of the release film 12 is larger than the outline area of the material cylinder 10. The contour area of the isolating membrane 8 is larger than that of the material cylinder 10. Optionally, the outline area of the release film 8 is larger than the outline area of the release film 12. Preferably, the area of the isolation film 8 is much larger than that of the screen assembly 9, so as to cover the gap between the screen assembly 9 and the base 6, and even if leakage occurs, the photosensitive resin can be effectively prevented from flowing into the gap between the screen assembly 9 and the base 6.

In another embodiment, the outer contour of the release film 12 is located just between the inner and outer contours of the cylinder assembly. So as to reduce the area of the release film 12 as much as possible while ensuring the sealing effect, thereby saving the cost.

As shown in fig. 2 and 3, on the basis of the above embodiments, in an alternative embodiment of the present invention, the impermeable material structure further comprises a supporting member 5 disposed on the base 6. The support 5 serves to improve the surface flatness. In particular, the support 5 is used to cover the upper surface of the base 6, thereby not only making it more aesthetic, but also making the upper surface of the entire 3D printing platform more even.

In the present embodiment, the support 5 is provided with a membrane groove 2,. The depth of the film groove 2 is less than or equal to the thickness of the isolation film 8, and the film groove is used for accommodating the isolation film 8. By providing the support 5 on the base 6, the thickness of the base 6 can be increased. So that the film groove 2 can be provided on the base 6. After the isolation film 8 is attached to the film groove 2, the flatness of the upper surface of the base 6 can be maintained, and the appearance is more attractive. Meanwhile, the film groove 2 can also provide positioning for the isolating film 8, and the isolating film 8 can be conveniently and quickly found in the attaching position when being replaced.

In this embodiment, the support 5 is also provided with a through hole in the film tank 2. The through hole is used for the screen assembly 9 to pass through. By arranging the through-hole in the middle of the film groove 2, it can be ensured that the barrier film 8 completely covers the entire screen. And covers the screen and the gap between the base 6 and the support 5.

As shown in fig. 2 and 4, on the basis of the above embodiments, in an alternative embodiment of the present invention, the supporting member 5 is provided with the screen slot 3 along the periphery of the through hole. As shown in fig. 2, the screen assembly 9 has an annular projection 1 extending outwardly from the periphery thereof. The annular projection 1 can be inserted into the screen slot 3 so that the surface of the screen assembly 9 is flush with the surface of the film slot 2.

In this embodiment, the annular protrusion 1 extends outwards through the periphery of the upper end face of the screen assembly 9 to form a structure with a T-shaped cross section. The annular projection 1 can cover a gap between the screen assembly 9 and the fixing hole when the screen assembly 9 is mounted on the base 6. And provides support for the screen assembly 9. Through the recess that sets up on support piece 5 and annular bulge 1 looks adaptation, screen groove 3 along the through-hole periphery setting promptly for annular bulge 1 can inlay in support piece 5, makes the upper surface of screen subassembly 9 and the upper surface of support piece 5 be in same plane, guarantees the roughness on whole print platform's surface.

It will be appreciated that in other embodiments, the annular projection 1 and the screen slot 3 may not be provided, but the screen assembly 9 may be supported as well by providing a support step in the fixing hole, and the surfaces of the screen assembly 9 and the support 5 may also be provided on the same plane.

As shown in fig. 3, in an alternative embodiment of the present invention based on the above embodiment, the supporting member 5 is substantially rectangular, and is fixed to the base 6 by fasteners located at four corners of the rectangle. Specifically, the supporting member 5 is provided with fasteners arranged at corners, so that the number of the fasteners can be reduced as much as possible on the premise that the supporting member 5 is tightly attached to the base 6. Thereby reducing the probability of photosensitive resin entering the gap between the fastener and the support 5. The fastener is preferably a bolt or a screw. In other embodiments, fasteners such as rivets may be used, and the utility model is not limited in particular.

As shown in fig. 2 and 5, on the basis of the above embodiments, in an alternative embodiment of the present invention, the material cylinder 10 is of a tubular structure and is provided with an abutting portion extending outward. The base 6 includes a pressing mechanism to apply pressure to the abutment. The cylinder 10 is provided with a blind hole in the abutment. The blind hole is adapted to cooperate with the hold-down mechanism to position and secure the bowl 10.

Specifically, the material cylinder 10 extends outward to form an abutting part, and the base 6 presses the abutting part through the pressing mechanism, so that the material cylinder 10 is firmly pressed on the release film 12 and the isolation film 8. And fix a position material jar 10 through the blind hole, prevent that material jar 10 from misplacing, can guarantee equally that material jar 10 and from the sealed effect between type membrane 12, the barrier film 8.

In this embodiment, the pressing mechanism is a thumb screw 4. And the base 6 includes a pair of hold-down mechanisms. The pair of pressing mechanisms are symmetrically arranged. The cylinder 10 extends circumferentially outward to form an abutment. The material cylinder 10 is symmetrically provided with a pair of blind holes. In other embodiments, the number of the pressing mechanisms may be three or four, as long as the pressing mechanisms can press the material cylinder 10 on the base 6, and the pressing mechanisms may also be existing mechanisms such as a press clamp. The utility model does not limit the specific structure and number of the pressing mechanisms.

As shown in fig. 2, 4 and 5, on the basis of the above embodiments, in an alternative embodiment of the present invention, the base 6 is provided with fixing holes. The screen assembly 9 includes a fixing portion that can be inserted into the fixing hole. The base 6 is at least partly made of a ferromagnetic material. At least a part of the fixing portion is configured to have magnetism so as to be magnetically fixed to the base 6 when the fixing portion is fitted into the fixing hole.

Specifically, the base 6 is constructed to be at least partially made of a magnetic material, and the screen assembly 9 is constructed to be at least partially magnetic. When the screen assembly 9 is installed on the base 6, the screen assembly is not easy to fall off, and the stability of the whole 3D printing platform is greatly improved.

In this embodiment, the screen assembly 9 includes a magnetic member disposed on a side surface of the fixing portion, so that a local position of the side surface of the fixing portion has magnetism. Through split type, at fixed part side-mounting magnetic part, can guarantee that screen assembly 9's particular position has under the magnetic prerequisite, effectual reduction production degree of difficulty, cost.

In other embodiments, the fixing device may be fixed by using a snap, and the utility model is not limited in this respect.

On the basis of the above embodiments, in an optional embodiment of the present invention, the side surface of the fixing portion is provided with a positioning hole. The base 6 is provided with a positioning protrusion located on the side surface of the fixing hole. The positioning protrusion is used for matching with the positioning hole to position the screen assembly 9 on the base 6. Specifically, the base 6 includes a wave ball screw disposed on the sidewall of the fixing hole to form a positioning protrusion.

In this embodiment, the positioning hole is disposed on the side of the fixing portion. When the screen assembly 9 is disposed on the base 6, the fixing portion is inserted into the fixing hole, so that the positioning hole and the positioning protrusion are hidden in the gap between the screen assembly 9 and the base 6. Not only is the appearance attractive, but also substances such as dust, photosensitive resin and the like can be prevented from entering the matching part of the positioning hole and the positioning bulge and being stuck. Not only the positioning effect is ensured, but also the detachable connection effect is ensured.

Example II,

An embodiment of the present invention provides a 3D printer, which includes the anti-seepage structure as described in any one of the paragraphs of the embodiment.

According to the embodiment of the utility model, the isolation film 8 is arranged between the material storage component 7 and the screen component 9, and the isolation film 8 can deform, so that the release film 12 and the isolation film 8 can be completely attached to the bottom of the material cylinder 10, a good sealing effect is achieved, and the photosensitive resin in the material cylinder 10 is effectively prevented from leaking. Moreover, the isolation film 8 has high light transmittance, and the light curing effect of the LCD cannot be influenced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a prevention of seepage material structure of 3D printer which characterized in that contains:

a base (6);

a screen assembly (9) disposed on the base (6);

a barrier film (8) which is disposed on the base (6) and can cover the screen assembly (9);

the storage component (7) is arranged on the isolation film (8) and used for containing 3D printing raw materials; the storage assembly (7) comprises a release film (12) arranged on the isolation film (8) and a material cylinder (10) arranged on the release film (12).

2. -impermeable structure according to claim 1, characterised in that the magazine assembly (7) further comprises a compacting frame (11) arranged to the vat (10); the pressing frame (11) is used for pressing and abutting against the release film (12).

3. Anti-seepage structure according to claim 2, characterized in that said compacting frame (11) is made of metallic material; the pressing frame (11) is fixed on the material cylinder (10) through a fastener;

the contour area of the isolation membrane (12) is larger than that of the material cylinder (10);

the contour area of the isolation film (8) is larger than that of the material cylinder (10).

4. The impermeable material structure according to claim 1, characterized in that it further comprises a support (5) arranged on the base (6); the support (5) is used for improving the surface flatness.

5. Impermeable structure according to claim 4, characterised in that the support (5) is provided with a membrane tank (2) to house the separation membrane (8); the depth of the film groove (2) is less than or equal to the thickness of the isolation film (8) and is used for accommodating the isolation film (8);

the supporting piece (5) is provided with a through hole positioned in the film groove (2); the through hole is used for the screen component (9) to pass through;

the support piece (5) is provided with a screen groove (3) along the periphery of the through hole;

the periphery of the screen component (9) extends outwards to form an annular bulge (1); the annular protrusion (1) can be embedded in the screen groove (3) so that the surface of the screen assembly (9) is flush with the surface of the film groove (2);

the supporting piece (5) is approximately rectangular and is fixed on the base (6) through fasteners positioned at four corners of the rectangle.

6. A feed-through prevention structure according to claim 1, characterized in that the cylinder (10) is of tubular construction and is provided with an abutment extending outwards;

the seat (6) comprises a pressing mechanism to apply pressure to the abutment;

the material cylinder (10) is provided with a blind hole positioned in the abutting part; the blind hole is used for being matched with the pressing mechanism so as to position and fix the material cylinder (10);

the pressing mechanism is a hand-screwed screw (4).

7. A barrier construction according to claim 6, wherein said base (6) comprises a pair of said hold-down mechanisms; the pair of pressing mechanisms are symmetrically arranged;

the periphery of the material cylinder (10) extends outwards to form the abutting part; the material cylinder (10) is symmetrically provided with a pair of blind holes.

8. A barrier construction according to any one of claims 1 to 7, wherein the barrier membrane (8) is a water-binding membrane. The base (6) is provided with a fixing hole; the screen component (9) comprises a fixing part which can be embedded into the fixing hole;

the base (6) is at least partially made of ferromagnetic material; at least part of the fixing part is configured to have magnetism, so that the fixing part can be magnetically fixed on the base (6) when being embedded into the fixing hole.

9. The impermeable material structure according to claim 8, characterized in that the fixing part is provided with positioning holes on the side;

the base (6) is provided with a positioning bulge positioned on the side surface of the fixing hole; the positioning bulge is used for being matched with the positioning hole to position the position of the screen assembly (9) on the base (6);

the base (6) comprises a wave ball screw which is arranged on the side wall of the fixing hole so as to form the positioning bulge;

the screen component (9) comprises a magnetic part configured on the side surface of the fixed part, so that the side surface of the fixed part has magnetism at a local position.

10. A 3D printer comprising the barrier structure of any one of claims 1 to 9.

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