Photocuring 3D printing flexible self-lubricating release method and equipment

Abstract

The invention relates to a light-cured 3D printing flexible self-lubricating release method and equipment, and the method comprises the following steps: filling a forming groove with a light-cured liquid material; the self-lubricating film is attached to the bottom of the forming groove through the moving platform; printing is started, and a light source penetrates through the self-lubricating film to irradiate the light-cured liquid material, so that the light-cured liquid material is cured at the bottom of the forming groove to form a printing layer; and lubricating liquid is filled above the self-lubricating film. According to the flexible self-lubricating release method for photocuring 3D printing, the lubricating liquid filled above the self-lubricating film is extracted by the lubricating bin, and vacuum is formed above the self-lubricating film, so that the deformation direction of the self-lubricating film is guided by adjusting the content ratio of the lubricating liquid at all positions above the self-lubricating film, and the self-lubricating film is released; and changing the deformation angle of the self-lubricating film according to the model structure to separate the printing layer.

Description

Technical Field

[0001] The present invention relates to the technical field of photocuring printing demoulding, and in particular to a photocuring 3D printing flexible self-lubricating demoulding method and equipment. Background Art

[0002] In the top-down printing mode, the key technical challenge is how to reduce the adhesion between the forming structure and the release film, thereby achieving rapid separation of the forming structure and the release film, so as to achieve rapid printing or continuous printing, reduce the impact of gravity on the printed part, thereby reducing the fragile and easy-to-deform characteristics of the printed part and improving the accuracy of the printed part. The main method to reduce adhesion is to transform the solid-solid bonding between the forming structure and the release film into solid-liquid bonding. At present, in high-speed light-curing 3D printing technology, there are mainly three methods for achieving solid-liquid bonding: There are currently three methods for achieving solid-liquid bonding in digital light-curing 3D printing technology. The first is the oxygen inhibition film method, which makes the release film oxygen permeable and uses the oxygen inhibition principle to construct a non-cured liquid "dead zone" layer between the molding material and the release film. This curing method has high requirements on the penetration depth of light and is not conducive to the forming of materials with a small curing depth; the second is the self-lubricating film method, which constructs a self-lubricating film that can release fluorinated oil or silicone oil to achieve low-adhesion separation between the forming structure and the forming film, but the lubricating liquid inside the release film is easily consumed, thereby reducing the performance of the film; the third is the oil film method, which uses fluorinated oil or silicone oil to construct a thicker oil film, and the photopolymerized liquid is directly above the oil film. Due to the force on the oil film during the lifting of the forming platform, the surface of the oil film becomes very unstable, which affects the forming accuracy.

[0003] In the prior art, there is a photocuring 3D printer with patent number CN110126272A, and the overall structure of the photocuring 3D printer includes a Z-direction motion device 1, a photosensitive resin storage tank 2, a light transmission device 3, and a light emitting device 4 from top to bottom. The 3D printer uses two different bands of ultraviolet light, long and short, to act on the photosensitive resin for photocuring printing. The light emitting device 4 is set at the lower end of the body as a long-wave ultraviolet light source, and the wavelength of the light source is between 405nm and 420nm. The light transmission device 3 is set at the bottom of the photosensitive resin storage tank 2, and a short-wave ultraviolet light source is set inside it, and the wavelength of the light source is between 345nm and 365nm. The short-wave ultraviolet light forms a curing inhibition layer between the release film and the photosensitive resin, and the long-wave ultraviolet light passes through the light transmission device 3 and the curing inhibition layer to perform photocuring 3D printing on the photosensitive resin in the photosensitive resin storage tank 2. The release film and the printed object are in a discrete state of non-fixed bonding, and there is no need to perform a demoulding operation of the release film when the printed object is lifted upward by the Z-direction motion device 1;

[0004] Patent No. CN111347670A discloses a novel demoulding mechanism for a photocurable 3D printer. The demoulding mechanism is aimed at the problem that the service life of the existing printer Z axis and the printing film is greatly shortened and prone to failure, and the software and the demoulding action need to have high coordination, while also increasing the cost of hardware control. The following scheme is proposed, which includes an adjustment plate, the top of which is fixedly connected with a left front corner plate, a left rear corner plate, a right rear corner plate and a right front corner plate, and the left front corner plate, the left rear corner plate, the right rear corner plate and the right front corner plate are all provided with motion track grooves, and a cam follower is slidably installed in the motion track groove, and the corresponding two cam followers are fixedly connected with the same left strip. The scheme extends the service life of the printer Z axis and the printing film to a certain extent, does not require additional electrical control, and greatly reduces the difficulty of software control.

[0005] However, in the actual printing process, the material proportion of each part of the printing layer needs to be determined according to the structure of the model itself. Therefore, in order to improve the printing accuracy and quality, it is necessary to solve the demolding process with different material proportions in each part of the printing layer. Summary of the invention

[0006] The first object of the present invention is to provide a flexible self-lubricating release method for photocuring 3D printing, which aims to solve the demolding process in which the material proportions at different locations of the printing layer are different.

[0007] In order to solve the above technical problems, a light-curing 3D printing flexible self-lubricating release method is provided, comprising the steps of:

[0008] S1, filling the photocurable liquid material into the molding tank;

[0009] S2, making the self-lubricating film adhere to the bottom of the forming groove by moving the platform;

[0010] S3, starting printing, irradiating the light-curable liquid material through the self-lubricating film with a light source, so that the light-curable liquid material is cured at the bottom of the molding groove to form a printing layer;

[0011] S4, the self-lubricating film is filled with lubricating liquid, and when the photocurable liquid material is solidified at the bottom of the forming groove to form a printing layer, the lubricating liquid filled above the self-lubricating film is extracted through the lubrication chamber to form a vacuum above the self-lubricating film;

[0012] S5, the self-lubricating film generates a pressure difference between the upper and lower parts, so that the self-lubricating film is separated from the printed layer;

[0013] The deformation direction of the self-lubricating film is guided by adjusting the content ratio of the lubricating liquid at various locations above the self-lubricating film, so as to change the deformation angle of the self-lubricating film to separate the printed layer.

[0014] Furthermore, the self-lubricating film is filled with lubricating liquid, which includes the following steps: the self-lubricating film is attached to a glass plate, a metal plate is connected to both sides of the self-lubricating film, a light-transmitting plate is formed above the glass plate, the lubricating liquid is filled between the glass plate and the light-transmitting plate, and springs are respectively connected between the metal plate and the light-transmitting plate; when the lubrication bin extracts the lubricating liquid filled above the self-lubricating film, the metal plates are respectively driven to move toward the light-transmitting plates to form a vacuum above the self-lubricating film.

[0015] Furthermore, the steps of driving the metal plates to move toward the light-transmitting plate include: the metal plates on both sides of the self-lubricating film are respectively connected to a first driving source, and when the first driving sources on both sides control the metal plates to move relative to the light-transmitting plate at different distances, the content ratio of the lubricating liquid at various locations above the self-lubricating film is adjusted.

[0016] Furthermore, driving the metal plate to move toward the light-transmitting plate includes the steps of: a first eccentric cam is provided on the movable platform, and two of the first eccentric cams are respectively in contact with two sides of the glass plate, and when the first eccentric cams on both sides control the glass plate to rotate relative to the light-transmitting plate, the content ratio of the lubricating liquid at various locations above the self-lubricating film is adjusted.

[0017] Furthermore, the self-lubricating film is filled with lubricating liquid, including the following steps: the self-lubricating film is attached to a glass plate, a light-transmitting plate is formed above the spacer glass plate, the lubricating liquid is filled between the glass plate and the light-transmitting plate, one side of the glass plate is elastically hinged to one side of the movable platform, a second eccentric cam is provided on the other side of the movable platform, the second eccentric cam abuts against the other side of the glass plate, and when the lubrication bin extracts the lubricating liquid filled above the self-lubricating film, the second eccentric cam rotates, and an inclination angle is formed between the glass plate and the light-transmitting plate.

[0018] The second object of the present invention is to provide a flexible self-lubricating device for photocuring 3D printing, which aims to solve the demolding problem of different material proportions in different parts of the printing layer.

[0019] In order to solve the above technical problems, a light-curing 3D printing flexible self-lubricating device is provided, which is suitable for the above light-curing 3D printing flexible self-lubricating release method, comprising:

[0020] light source;

[0021] A mobile platform, wherein the light source is connected above the mobile platform;

[0022] A molding tank, located below the moving platform and used for containing a light-curable liquid material;

[0023] A lubrication module, the lubrication module comprising a light-transmitting plate, a glass plate and a self-lubricating film, the light-transmitting plate is connected above the moving platform, the glass plate is movably connected to the moving platform with the light-transmitting plate separated, the self-lubricating film is attached to the glass plate, and a lubricating liquid is filled between the light-transmitting plate and the glass plate;

[0024] The adjustment module includes a lubrication bin and a separation component. The lubrication bin is connected to one side of the mobile platform and is used to extract and discharge the lubricating liquid between the light-transmitting plate and the glass plate. The separation component is connected to the end of the mobile platform and is used to adjust the content ratio of the lubricating liquid between the glass plate and the light-transmitting plate to guide the self-lubricating film to produce directional deformation.

[0025] Further, the separation assembly includes a metal plate, a spring and a first driving source, the metal plate is connected to both sides of the glass plate, the spring is abutted between the metal plate and the light-transmitting plate, and the first driving source is connected to both sides of the mobile platform;

[0026] When the lubrication bin extracts lubricating fluid, the first driving source drives the metal plates on both sides to move toward the light-transmitting plate, so that a vacuum is formed above the self-lubricating film, and the self-lubricating film is deformed.

[0027] Further, the separation assembly comprises a metal plate, a spring and a first eccentric cam, the metal plate is connected to both sides of the glass plate, the spring is abutted between the metal plate and the light-transmitting plate, the first eccentric cam is connected to the moving platform, and the two first eccentric cams are respectively abutted against both sides of the glass plate;

[0028] When the lubrication bin extracts lubricating fluid, the first eccentric cam rotates to drive the glass plate to move relative to the light-transmitting plate, so that a vacuum is formed above the self-lubricating film, and the self-lubricating film is deformed.

[0029] Further, the separation assembly includes an elastic hinge structure and a second eccentric cam, the elastic hinge structure is arranged on one side of the mobile platform, the second eccentric cam is arranged on the other side of the mobile platform, one side of the glass plate is connected to the elastic hinge structure, and the second eccentric cam abuts against the other side of the glass plate;

[0030] When the lubricating chamber extracts lubricating fluid, the second eccentric cam rotates to drive the glass plate to form an inclined angle relative to the light-transmitting plate, so that a vacuum is formed above the self-lubricating film, and the self-lubricating film is deformed.

[0031] Furthermore, the self-lubricating film is a light-transmitting organic polymer film material with a thickness ranging from 0.05 to 5 mm.

[0032] Implementing the embodiments of the present invention will have the following beneficial effects:

[0033] 1. The light-curing 3D printing flexible self-lubricating release method in this embodiment is as follows: the light-curing liquid material is filled in the molding groove; the self-lubricating film is attached to the bottom of the molding groove by a moving platform; the printing is started, and the light source is used to irradiate the light-curing liquid material through the self-lubricating film, so that the light-curing liquid material is solidified at the bottom of the molding groove to form a printing layer; the self-lubricating film is filled with a lubricating liquid, and when the light-curing liquid material is solidified at the bottom of the molding groove to form a printing layer, the lubricating liquid filled above the self-lubricating film is extracted through the lubrication bin to form a vacuum above the self-lubricating film; the self-lubricating film generates a pressure difference between the upper and lower parts, so that the self-lubricating film is separated from the printing layer, thereby guiding the deformation direction of the self-lubricating film by adjusting the content ratio of the lubricating liquid at various places above the self-lubricating film, and then changing the deformation angle of the self-lubricating film according to the model structure to separate the printing layer, thereby overcoming the problems of different material proportions at various places of the printing layer in the prior art and poor precision and quality after demolding;

[0034] 2. In the light-curing 3D printing flexible self-lubricating release method of this embodiment, since the self-lubricating film is attached to the glass plate, the metal plate is connected to both sides of the self-lubricating film, a light-transmitting plate is formed above the glass plate, the lubricating liquid is filled between the glass plate and the light-transmitting plate, and the springs are respectively connected between the metal plate and the light-transmitting plate, so that when the lubricating chamber extracts the lubricating liquid filled above the self-lubricating film, the metal plate is driven to move toward the light-transmitting plate, thereby forming a vacuum above the self-lubricating film;

[0035] 3. In the light-curing 3D printing flexible self-lubricating release method of this embodiment, since the metal plates on both sides of the self-lubricating film are respectively connected to the first driving source, when the first driving sources on both sides control the metal plates to move relative to the light-transmitting plate at different distances, the content ratio of the lubricating liquid at various locations above the self-lubricating film is adjusted to guide the deformation direction of the self-lubricating film;

[0036] 4. In the light-curing 3D printing flexible self-lubricating device in this embodiment, since the lubrication module includes a light-transmitting plate, a glass plate and a self-lubricating film, the light-transmitting plate is connected above the mobile platform, the glass plate is movably connected to the mobile platform between the light-transmitting plate, the self-lubricating film is attached to the glass plate, and the lubricating liquid is filled between the light-transmitting plate and the glass plate; the adjustment module includes a lubrication bin and a separation component, the lubrication bin is connected to one side of the mobile platform, and is used to pump and discharge the lubricating liquid between the light-transmitting plate and the glass plate, and the separation component is connected to the end of the mobile platform, and is used to adjust the content ratio of the lubricating liquid between the glass plate and the light-transmitting plate, thereby guiding the self-lubricating film to produce directional deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 This is a flow chart of the light-curing 3D printing flexible self-lubricating release method according to the first embodiment of the present invention;

[0039] Figure 2 This is a first schematic diagram of a light-curing 3D printing flexible self-lubricating device according to the second embodiment of the present invention;

[0040] Figure 3 This is a first schematic diagram of the light-curing 3D printing flexible self-lubricating device described in Example 2 of the present invention.

[0041] Wherein: 100, photocuring 3D printing flexible self-lubricating equipment; 110, light source; 120, mobile platform; 130, molding groove; 140, lubrication module; 141, light-transmitting plate; 142, glass plate; 143, self-lubricating film; 150, adjustment module; 151, lubrication bin; 152, separation component; 1521, metal plate; 1522, spring; 1523, first driving source; 1525, elastic hinge structure; 1526, second eccentric cam. DETAILED DESCRIPTION

[0042] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0045] Embodiment 1

[0046] Please refer to Figure 1-Figure 3 , Embodiment 1 of the present invention provides a light-curing 3D printing flexible self-lubricating release method, comprising the steps of:

[0047] S1, filling the photocurable liquid material into the molding tank 130;

[0048] S2, the self-lubricating film 143 is attached to the bottom of the forming groove 130 by moving the platform 120;

[0049] S3, start printing, irradiate the light-curable liquid material through the self-lubricating film 143 by the light source 110, so that the light-curable liquid material is cured at the bottom of the molding groove 130 to form a printing layer;

[0050] S4, the self-lubricating film 143 is filled with lubricating liquid. When the photocurable liquid material is solidified at the bottom of the forming groove 130 to form a printing layer, the lubricating liquid filled above the self-lubricating film 143 is extracted through the lubricating chamber 151 to form a vacuum above the self-lubricating film 143;

[0051] S5, the self-lubricating film 143 generates a pressure difference between the upper and lower parts, so that the self-lubricating film 143 is separated from the printed layer;

[0052] Among them, by adjusting the content ratio of the lubricating liquid at various locations above the self-lubricating film, the deformation direction of the self-lubricating film 143 is guided to change the deformation angle of the self-lubricating film 143 to separate the printed layer. In a specific application, a photocurable liquid material is filled in the molding groove 130, and the photocurable liquid material is a photocurable resin material, a photocurable ceramic slurry or a photocurable metal slurry; the self-lubricating film 143 is made to fit the bottom of the molding groove 130 through the moving platform 120; printing is started, and the light source 110 is used to irradiate the photocurable liquid material through the self-lubricating film 143, so that the photocurable liquid material is cured at the bottom of the molding groove 130 to form a printed layer; since the self-lubricating film 143 is filled with lubricating liquid, when the photocurable liquid material is cured at the bottom of the molding groove 130 to form a printed layer, at this time, the lubricating liquid filled above the self-lubricating film 143 is extracted through the lubrication bin 151, so that the self-lubricating A vacuum is formed above the film 143; the self-lubricating film 143 generates a pressure difference between the upper and lower parts and deforms to separate the self-lubricating film 143 from the printed layer. It is worth noting that in the actual 3D printing process, the specific printing model itself has different structures and needs to conform to the actual printing separation angle, otherwise it is easy to cause cracks inside the print or a decrease in connection strength. Therefore, the content ratio of the lubricating liquid at various locations above the self-lubricating film is adjusted according to the material used in the printing layer of the printing model itself, thereby guiding the deformation direction of the self-lubricating film 143, and then changing the deformation angle of the self-lubricating film 143 according to the model structure to separate the printed layer, ensuring that the material ratio at various locations of the printed layer is different, and the accuracy and quality after demolding are improved.

[0053] In a possible embodiment, the self-lubricating film 143 is filled with lubricating liquid, including the following steps: the self-lubricating film 143 is attached to the glass plate 142, the metal plates 1521 are connected to the two sides of the self-lubricating film 143, a light-transmitting plate 141 is formed above the glass plate 142, the lubricating liquid is filled between the glass plate 142 and the light-transmitting plate 141, the springs 1522 are respectively connected between the metal plates 1521 and the light-transmitting plate 141, and when the lubrication bin 151 extracts the lubricating liquid filled above the self-lubricating film 143, the metal plates 1521 are respectively driven to move toward the light-transmitting plate 141, so that a vacuum is formed above the self-lubricating film 143. In a specific application, the self-lubricating film 143 is attached to the glass plate 142, and the lubricating liquid can penetrate between the self-lubricating film 143 and the glass plate 142 by capillary effect. The metal plate 1521 is connected to both sides of the self-lubricating film 143, and a light-transmitting plate 141 is formed above the glass plate 142. The lubricating liquid is filled between the glass plate 142 and the light-transmitting plate 141. The spring 1522 is respectively connected between the metal plate 1521 and the light-transmitting plate 141. When the lubrication bin 151 extracts the lubricating liquid filled above the self-lubricating film 143, the metal plate 1521 is driven to move toward the light-transmitting plate 141. At this time, a vacuum is formed above the self-lubricating film 143, the glass plate 142 is in an active state, and the self-lubricating film 143 undergoes a concave deformation. The concave deformed portion of the self-lubricating film 143 will be separated from the printing layer, thereby completing the demolding process.

[0054] In a possible embodiment, the metal plates 1521 are driven to move toward the light-transmitting plate 141 respectively, and the metal plates 1521 on both sides of the self-lubricating film 143 are respectively connected to the first driving source 1523, and when the first driving sources 1523 on both sides control the metal plates 1521 to move relative to the light-transmitting plate 141 at different distances, the content ratio of the lubricating liquid at various locations above the self-lubricating film is adjusted. In a specific application, the metal plates 1521 on both sides of the self-lubricating film 143 are respectively connected to the first driving source 1523, and the first driving source 1523 controls the metal plates 1521 to move relative to the light-transmitting plate 141 at different distances according to the material ratio of the model printing layer, thereby adjusting the content ratio of the lubricating liquid at various locations above the self-lubricating film, thereby guiding the deformation direction of the self-lubricating film 143, and facilitating improving the accuracy and quality of each printing layer.

[0055] In a possible embodiment, the metal plate 1521 is driven to move toward the light-transmitting plate 141, and the moving platform 120 is provided with a first eccentric cam (not shown), and the two first eccentric cams are respectively in contact with the two sides of the glass plate 142, and when the first eccentric cams on both sides control the glass plate 142 to rotate relative to the light-transmitting plate 141, the content ratio of the lubricating liquid at various locations above the self-lubricating film is adjusted. In a specific application, when the first eccentric cams on both sides rotate at the same angle, the heights raised on both sides of the glass plate 142 are the same, and the self-lubricating film 143 is symmetrically concave and separated from the printed layer. When the first eccentric cams on both sides rotate at different angles, the heights raised on both sides of the glass plate 142 are different, the glass plate 142 is tilted, and the content ratio of the lubricating liquid at various locations above the self-lubricating film is different, and the deformation direction of the self-lubricating film 143 is changed to demold the printed layer.

[0056] In a possible embodiment, the self-lubricating film 143 is filled with lubricating liquid, including the following steps: the self-lubricating film 143 is attached to the glass plate 142, a light-transmitting plate 141 is formed above the glass plate 142, the lubricating liquid is filled between the glass plate 142 and the light-transmitting plate 141, one side of the glass plate 142 is elastically hinged to one side of the movable platform 120, and a second eccentric cam 1526 is provided on the other side of the movable platform 120, and the second eccentric cam 1526 is abutted against the other side of the glass plate 142. When the lubrication bin 151 extracts the lubricating liquid filled above the self-lubricating film 143, the second eccentric cam 1526 rotates, and an inclination angle is formed between the glass plate 142 and the light-transmitting plate 141. In a specific application, the self-lubricating film 143 is attached to the glass plate 142, and a light-transmitting plate 141 is formed above the spacer glass plate 142. The lubricating liquid is filled between the glass plate 142 and the light-transmitting plate 141. One side of the glass plate 142 is elastically hinged to one side of the movable platform 120. A second eccentric cam 1526 is provided on the other side of the movable platform 120. The second eccentric cam 1526 abuts against the other side of the glass plate 142. When the lubrication bin 151 extracts the lubricating liquid filled above the self-lubricating film 143, the second eccentric cam 1526 rotates, and an inclination angle of 3° is formed between the glass plate 142 and the light-transmitting plate 141, so that the rigidity of the self-lubricating film 143 is reduced. At this time, the self-lubricating film 143 produces an internal and external pressure difference and deforms, so that an extra gap is generated between the self-lubricating film 143 and the printed layer for demolding.

[0057] Embodiment 2

[0058] The subject matter protected in this embodiment is different from that in the first embodiment, as follows:

[0059] Please refer to Figure 2 and Figure 3, Embodiment 2 of the present invention provides a light-curing 3D printing flexible self-lubricating device 100, which is suitable for the above-mentioned light-curing 3D printing flexible self-lubricating release method, including a light source 110, a mobile platform 120, a molding groove 130, a lubrication module 140 and an adjustment module 150; the light source 110 is connected above the mobile platform 120; the molding groove 130 is located below the mobile platform 120 and is used to hold the light-curing liquid material; the lubrication module 140 includes a light-transmitting plate 141, a glass plate 142 and a self-lubricating film 143, the light-transmitting plate 141 is connected above the mobile platform 120, and the glass plate 1 The spacer light-transmitting plate 141 is movably connected to the mobile platform 120, the self-lubricating film 143 is attached to the glass plate 142, and the lubricating liquid is filled between the light-transmitting plate 141 and the glass plate 142; the adjustment module 150 includes a lubrication bin 151 and a separation component 152, the lubrication bin 151 is connected to one side of the mobile platform 120, and is used to extract and release the lubricating liquid between the light-transmitting plate 141 and the glass plate 142, and the separation component 152 is connected to the end of the mobile platform 120, and is used to adjust the content ratio of the lubricating liquid between the glass plate 142 and the light-transmitting plate 141, so as to guide the self-lubricating film 143 to produce directional deformation. In a specific application, the lubrication module 140 includes a light-transmitting plate 141, a glass plate 142 and a self-lubricating film 143. The light-transmitting plate 141 is connected to the top of the mobile platform 120, the glass plate 142 is movably connected to the mobile platform 120 with the light-transmitting plate 141 spaced apart, the self-lubricating film 143 is attached to the glass plate 142, and the lubricating liquid is filled between the light-transmitting plate 141 and the glass plate 142; the adjustment module 150 includes a lubrication bin 151 and a separation component 152. The lubrication bin 151 is connected to one side of the mobile platform 120 and is used to extract and release the lubricating liquid between the light-transmitting plate 141 and the glass plate 142. When a printing layer is completed in the molding groove 130, the lubrication bin 151 automatically extracts the lubricating liquid between the light-transmitting plate 141 and the glass plate 142. The separation component 152 is connected to the end of the mobile platform 120 and is used to adjust the content ratio of the lubricating liquid between the glass plate 142 and the light-transmitting plate 141, thereby guiding the self-lubricating film 143 to produce directional deformation, so that the self-lubricating film 143 is demolded from the printing layer.

[0060] In a possible embodiment, the separation component 152 includes a metal plate 1521, a spring 1522 and a first driving source 1523, the metal plate 1521 is connected to both sides of the glass plate 142, the spring 1522 is abutted between the metal plate 1521 and the light-transmitting plate 141, and the first driving source 1523 is connected to both sides of the movable platform 120; when the lubrication bin 151 extracts lubricating fluid, the first driving source 1523 drives the metal plates 1521 on both sides to move toward the light-transmitting plate 141, so that a vacuum is formed above the self-lubricating film 143, and the self-lubricating film 143 is deformed. In a specific application, the separation component 152 includes a metal plate 1521, a spring 1522 and a first driving source 1523. When the lubrication chamber 151 extracts lubricating fluid, the first driving source 1523 drives the metal plates 1521 on both sides to move toward the light-transmitting plate 141. When the metal plates 1521 on both sides move the same distance toward the light-transmitting plate 141, the vacuum degree ratio above the self-lubricating film 143 is the same, and the self-lubricating film 143 produces a symmetrical concave deformation and is demolded and separated from the printing layer. When the metal plates 1521 on both sides move different distances toward the light-transmitting plate 141, the vacuum degree ratio above the self-lubricating film 143 is different. At this time, the self-lubricating film 143 produces an inclined concave deformation and is demolded and separated from the printing layer.

[0061] In a possible embodiment, the separation component 152 includes a metal plate 1521, a spring 1522 and a first eccentric cam, the metal plate 1521 is connected to both sides of the glass plate 142, the spring 1522 abuts between the metal plate 1521 and the light-transmitting plate 141, the first eccentric cam is connected to the movable platform 120, and the two first eccentric cams respectively abut against both sides of the glass plate 142; when the lubrication bin 151 extracts lubricating fluid, the first eccentric cams on both sides rotate to drive the glass plate 142 to move relative to the light-transmitting plate 141, so that a vacuum is formed above the self-lubricating film 143, and the self-lubricating film 143 is deformed. In a specific application, the separation component 152 includes a metal plate 1521, a spring 1522 and a first eccentric cam. When the lubrication chamber 151 extracts lubricating fluid, an eccentric cam on both sides rotates to drive the glass plate 142 to move relative to the light-transmitting plate 141. When the metal plates 1521 on both sides move the same distance toward the light-transmitting plate 141, the vacuum degree ratio above the self-lubricating film 143 is the same, and the self-lubricating film 143 produces a symmetrical concave deformation and is demolded and separated from the printing layer. When the metal plates 1521 on both sides move different distances toward the light-transmitting plate 141, the vacuum degree ratio above the self-lubricating film 143 is different. At this time, the self-lubricating film 143 produces an inclined concave deformation and is demolded and separated from the printing layer.

[0062] In a possible embodiment, the separation component 152 includes an elastic hinge structure 1525 and a second eccentric cam 1526, the elastic hinge structure 1525 is arranged on one side of the mobile platform 120, and the second eccentric cam 1526 is arranged on the other side of the mobile platform 120, one side of the glass plate 142 is connected to the elastic hinge structure 1525, and the second eccentric cam 1526 abuts against the other side of the glass plate 142; when the lubrication bin 151 extracts lubricating fluid, the second eccentric cam 1526 rotates to drive the glass plate 142 to form an inclination angle relative to the light-transmitting plate 141, so that a vacuum is formed above the self-lubricating film 143, and the self-lubricating film 143 is deformed. In a specific application, the separation component 152 includes an elastic hinge structure 1525 and a second eccentric cam 1526. When the lubrication bin 151 extracts lubricating fluid, the second eccentric cam 1526 rotates to drive the glass plate 142 to form an inclination angle of 3° relative to the light-transmitting plate 141, so that the self-lubricating film 143 reduces its rigidity. At this time, the self-lubricating film 143 produces an inclined concave deformation and is demolded and separated from the printed layer.

[0063] In a possible implementation, the self-lubricating film 143 is a light-transmitting organic polymer film material with a thickness ranging from 0.05 to 5 mm. In a specific application, the self-lubricating film 143 has no pore structure or contains a micro-pore structure of 5 to 200 μm. The lubricating liquid in the self-lubricating film 143 is fluorinated oil, silicone oil or wax-containing lubricant; the affinity of the lubricating liquid to the self-lubricating film 143 is greater than the affinity of the photocurable liquid material to the self-lubricating film 143; the light-transmitting plate 141 is silicon oxide, organic glass, polymethyl methacrylate, and high molecular polyethylene.

[0064] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A light-curing 3D printing flexible self-lubricating release method, characterized in that: Includes steps: S1, filling the photocurable liquid material into the molding tank; S2, making the self-lubricating film adhere to the bottom of the forming groove by moving the platform; S3, starting printing, irradiating the light-curable liquid material through the self-lubricating film with a light source, so that the light-curable liquid material is cured at the bottom of the molding groove to form a printing layer; S4, the self-lubricating film is filled with lubricating liquid, and when the photocurable liquid material is solidified at the bottom of the forming groove to form a printing layer, the lubricating liquid filled above the self-lubricating film is extracted through the lubrication chamber to form a vacuum above the self-lubricating film; S5, the self-lubricating film generates a pressure difference between the upper and lower parts, so that the self-lubricating film is separated from the printed layer; The deformation direction of the self-lubricating film is guided by adjusting the content ratio of the lubricating liquid at various locations above the self-lubricating film, so as to change the deformation angle of the self-lubricating film to separate the printed layer.

2. The light-curing 3D printing flexible self-lubricating release method according to claim 1, characterized in that: The self-lubricating film is filled with lubricating liquid, which includes the following steps: the self-lubricating film is attached to a glass plate, a metal plate is connected to both sides of the self-lubricating film, a light-transmitting plate is formed above the glass plate, the lubricating liquid is filled between the glass plate and the light-transmitting plate, a spring is respectively connected between the metal plate and the light-transmitting plate, and when the lubricating bin extracts the lubricating liquid filled above the self-lubricating film, the metal plates are respectively driven to move toward the light-transmitting plates to form a vacuum above the self-lubricating film.

3. The light-curing 3D printing flexible self-lubricating release method according to claim 2, characterized in that: Driving the metal plates to move toward the light-transmitting plate respectively includes the steps of: the metal plates on both sides of the self-lubricating film are respectively connected to a first driving source; when the first driving sources on both sides control the metal plates to move relative to the light-transmitting plate at different distances, the content ratio of the lubricating liquid at various locations above the self-lubricating film is adjusted.

4. The light-curing 3D printing flexible self-lubricating release method according to claim 2, characterized in that: Driving the metal plate to move toward the light-transmitting plate includes the steps of: a first eccentric cam is provided on the moving platform, and two of the first eccentric cams are respectively in contact with two sides of the glass plate; when the first eccentric cams on both sides control the glass plate to rotate relative to the light-transmitting plate, the content ratio of the lubricating liquid at various locations above the self-lubricating film is adjusted.

5. The light-curing 3D printing flexible self-lubricating release method according to claim 1, characterized in that: The self-lubricating film is filled with lubricating liquid, which includes the following steps: the self-lubricating film is attached to a glass plate, a light-transmitting plate is formed above the spacer glass plate, the lubricating liquid is filled between the glass plate and the light-transmitting plate, one side of the glass plate is elastically hinged to one side of the movable platform, a second eccentric cam is provided on the other side of the movable platform, the second eccentric cam abuts against the other side of the glass plate, and when the lubrication bin extracts the lubricating liquid filled above the self-lubricating film, the second eccentric cam rotates, and an inclination angle is formed between the glass plate and the light-transmitting plate.

6. A light-curing 3D printing flexible self-lubricating device, characterized in that: The light-curing 3D printing flexible self-lubricating release method according to any one of claims 1 to 5 comprises: light source; A mobile platform, wherein the light source is connected above the mobile platform; A molding tank, located below the moving platform and used for containing a light-curable liquid material; A lubrication module, the lubrication module comprising a light-transmitting plate, a glass plate and a self-lubricating film, the light-transmitting plate is connected above the moving platform, the glass plate is movably connected to the moving platform with the light-transmitting plate separated, the self-lubricating film is attached to the glass plate, and a lubricating liquid is filled between the light-transmitting plate and the glass plate; The adjustment module includes a lubrication bin and a separation component. The lubrication bin is connected to one side of the mobile platform and is used to extract and discharge the lubricating liquid between the light-transmitting plate and the glass plate. The separation component is connected to the end of the mobile platform and is used to adjust the content ratio of the lubricating liquid between the glass plate and the light-transmitting plate to guide the self-lubricating film to produce directional deformation.

7. The light-curing 3D printing flexible self-lubricating device according to claim 6, characterized in that: The separation assembly includes a metal plate, a spring and a first driving source, wherein the metal plate is connected to both sides of the glass plate, the spring is abutted between the metal plate and the light-transmitting plate, and the first driving source is connected to both sides of the moving platform; When the lubrication bin extracts lubricating fluid, the first driving source drives the metal plates on both sides to move toward the light-transmitting plate, so that a vacuum is formed above the self-lubricating film, and the self-lubricating film is deformed.

8. The light-curing 3D printing flexible self-lubricating device according to claim 6, characterized in that: The separation assembly comprises a metal plate, a spring and a first eccentric cam, wherein the metal plate is connected to both sides of the glass plate, the spring is abutted between the metal plate and the light-transmitting plate, the first eccentric cam is connected to the moving platform, and two first eccentric cams are respectively abutted against both sides of the glass plate; When the lubricating liquid is extracted from the lubricating bin, the first eccentric cams on both sides rotate to drive the glass plate to move relative to the light-transmitting plate, so that a vacuum is formed above the self-lubricating film, and the self-lubricating film is deformed.

9. The light-curing 3D printing flexible self-lubricating device according to claim 6, characterized in that: The separation assembly comprises an elastic hinge structure and a second eccentric cam, wherein the elastic hinge structure is arranged on one side of the moving platform, and the second eccentric cam is arranged on the other side of the moving platform, one side of the glass plate is connected to the elastic hinge structure, and the second eccentric cam abuts against the other side of the glass plate; When the lubricating chamber extracts lubricating fluid, the second eccentric cam rotates to drive the glass plate to form an inclined angle relative to the light-transmitting plate, so that a vacuum is formed above the self-lubricating film, and the self-lubricating film is deformed.

10. The light-curing 3D printing flexible self-lubricating device according to any one of claims 6 to 9, characterized in that: The self-lubricating film is a light-transmitting organic polymer film material with a thickness ranging from 0.05 to 5 mm.

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