Auxiliary release device and method based on 3D photocuring printer and printing equipment

Abstract

The invention discloses an auxiliary release device and method based on a 3D photocuring printer and printing equipment. The auxiliary release device comprises a regulation and control air pump structure; the input end part of the reversing valve body structure is communicated and connected with the regulation and control air pump structure, and the output end part of the reversing valve body structure is respectively communicated with a ventilation port and an air guide pipe body; the input end part of the buffer tank body structure is communicated and connected with the gas guide pipe body; the input end part of the gas conveying valve body structure is communicated and connected with the output end part of the buffer tank body structure; the pressure regulating valve assembly structure is arranged between the output end of the buffer tank body structure and the input end of the gas conveying valve body structure in a communicating mode and used for regulating and controlling the gas conveying positive / negative pressure value. The technical problems that in the prior art, when a pull-up type 3D photocuring printer conducts printing model separation, upward film pulling force acting on a release film easily conflicts with downward vacuum negative pressure, so that the quality of the printing model is poor, the noise of the release process is large, and the service life of the release film is not prolonged are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to an auxiliary release device, method and printing equipment based on a 3D light-curing printer. Background Art

[0002] At present, in the top-pull 3D light-curing printers on the market, the release film of the material tank passively participates in the printing process. When the printed model is separated from the material tank, the upper surface of the release film will be subjected to the film pulling force of the printed model, while the lower surface of the release film will be subjected to the vacuum negative pressure formed by the projection glass (DLP and SLA 3D light-curing printers) or the liquid crystal display (LCD 3D light-curing printers).

[0003] Among them, the vacuum negative pressure on the lower surface of the release film will make the release film lose its flexibility, resulting in a rigid surface separation between the release film and the printed model, which requires a large film-pulling force, causing many problems in printing, such as poor model quality, loud noise in the release process, etc., and is not conducive to the service life of the release film. Summary of the invention

[0004] To this end, the present invention provides an auxiliary release device, method and printing equipment based on a 3D light-curing printer to solve the technical problems in the prior art that when a top-pull 3D light-curing printer is used to separate a printed model, the upward pulling force acting on the release film and the downward vacuum negative pressure are prone to conflict, resulting in poor quality of the printed model, high noise in the release process and a short service life of the release film.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] An auxiliary release device based on a 3D light-curing printer, comprising:

[0007] The air pump structure is regulated, and has an air inlet and an air outlet respectively;

[0008] The input end of the reversing valve body structure is connected to the air inlet and the air outlet of the regulating air pump structure, and the output end of the reversing valve body structure is connected to a ventilation port and an air guide tube body, the ventilation port is used to always keep connected to the atmosphere, and the air guide tube body is used for positive / negative pressure gas transmission;

[0009] The buffer tank structure has an input end connected to the air guide pipe body;

[0010] The gas delivery valve body structure has an input end connected to the output end of the buffer tank structure, and the output end of the gas delivery valve body structure is used to be connected to the 3D light-curing printer through a pipeline;

[0011] A pressure regulating valve assembly structure is connected between the output end of the buffer tank structure and the input end of the gas transmission valve structure, and is used to adjust the positive / negative pressure of the gas transmission to a standard pressure value;

[0012] The control circuit board is respectively connected with the regulating air pump structure, the reversing valve body structure, the gas delivery valve body structure and the pressure regulating valve assembly structure through circuits.

[0013] On the basis of the above technical solution, the present invention is further described as follows:

[0014] As a further solution of the present invention, it also includes:

[0015] The basic frame structure comprises a base plate and a first bracket and a second bracket respectively fixed to the base plate, wherein the first bracket is configured as an inverted U-shaped bracket and the second bracket is configured as a vertical plate bracket;

[0016] The regulating air pump structure is fixedly mounted on the base plate, and the electric drive end of the regulating air pump structure is correspondingly arranged on the inner side of the inverted U-shaped first bracket;

[0017] The gas delivery end of the regulating air pump structure is correspondingly arranged at the outer side of the inverted U-shaped first bracket, and the gas delivery end of the regulating air pump structure has an air inlet and an air outlet respectively;

[0018] The reversing valve body structure is fixedly mounted on the top surface of the inverted U-shaped first bracket;

[0019] The buffer tank structure is fixedly mounted on the base plate, and the buffer tank structure is correspondingly arranged on the inner side of the inverted U-shaped first bracket;

[0020] The gas delivery valve body structure is fixedly mounted on the top surface of the inverted U-shaped first bracket;

[0021] The control circuit board is fixedly mounted on the second vertical plate bracket.

[0022] As a further solution of the present invention, it also includes:

[0023] The air pump fan structure is fixedly mounted on a side wall of the inverted U-shaped first bracket. The air pump fan structure is arranged correspondingly between the electric drive end of the regulating air pump structure located on the inner side of the inverted U-shaped first bracket, and heat is dissipated by the air pump fan structure corresponding to the regulating air pump structure.

[0024] As a further solution of the present invention, the reversing valve body structure includes a reversing valve body;

[0025] The two groups of air inlet ports of the reversing valve body are connected to the air inlet and air outlet of the air delivery end of the regulating air pump structure in a one-to-one correspondence through pipelines;

[0026] One of the gas outlet ports of the reversing valve body is set as the vent port, and the vent port is always connected to the atmosphere through the predetermined reversing conduction effect of the reversing valve body;

[0027] And another group of air outlet ports of the reversing valve body are connected and arranged between the air guide tube body and the buffer tank body structure, and the two groups of air inlet and outlet pipelines of the regulating air pump structure are converted into a single group of the air guide tube body for air transmission through the reversing valve body, and then the established air transmission and energy storage function is realized by transmitting air in a single direction between the single group of the air guide tube body and the buffer tank body structure.

[0028] As a further solution of the present invention, it also includes:

[0029] A monitoring pressure gauge, fixedly mounted on the top surface of the inverted U-shaped first bracket;

[0030] The pipeline between the buffer tank structure and the gas delivery valve structure is connected with a branch pipe;

[0031] The pressure regulating valve assembly structure includes a positive pressure regulating valve and a negative pressure regulating valve;

[0032] The positive pressure regulating valve and the negative pressure regulating valve are respectively fixedly connected to the first inverted U-shaped bracket, and the positive pressure regulating valve and the negative pressure regulating valve are respectively connected to the branch pipe;

[0033] The monitoring pressure gauge is connected to the branch pipe via a pipeline, and the monitoring pressure gauge cooperates with the positive pressure regulating valve and the negative pressure regulating valve to adjust the positive / negative pressure value of the gas transmission.

[0034] As a further solution of the present invention, the control circuit board is provided with a power module and a control module connected by a circuit;

[0035] The control output end of the control module is connected to the input end of the relay through a circuit, and the output end of the relay is respectively connected to the regulating air pump structure, the reversing valve body in the reversing valve body structure, the gas delivery valve body structure, and the positive pressure regulating valve and the negative pressure regulating valve in the pressure regulating valve assembly structure through a circuit;

[0036] The monitoring pressure gauge is connected to the control input end of the control module via a circuit.

[0037] An application method of an auxiliary release device based on a 3D light-curing printer comprises the following steps:

[0038] When the printed model in the top-pull 3D light-curing printer is separated from the release film, the air outlet of the regulating air pump structure is connected to the buffer tank structure through the reversing valve body structure through the control circuit board, and the air inlet of the regulating air pump structure is connected to the atmosphere through the vent port of the reversing valve body structure;

[0039] The air pump structure is controlled to adjust the speed and adjust the air output. At the same time, the buffer tank structure is used to store gas and quickly establish a positive pressure in the pipeline.

[0040] Further, the positive pressure regulating valve in the pressure regulating valve assembly structure is controlled by the control circuit board to start in cooperation with the monitoring pressure gauge, so as to adjust the working pressure of the positive pressure of the gas transmission in the pipeline to reach the preset standard positive pressure value;

[0041] When the preset standard positive pressure value is reached, the gas supply valve body structure and the gas supply pipe are connected to allow the positive pressure gas to quickly enter and break the vacuum negative pressure between the projection display screen of the 3D light-curing printer and the release film, so that the release film recovers its flexibility, reduces the film pulling force between the printed model and the release film, and completes the separation process.

[0042] As a further solution of the present invention, the following steps are also included:

[0043] When the top-pull 3D light-curing printer is ready to print based on the release film, the air inlet of the regulating air pump structure is connected to the buffer tank structure through the reversing valve structure through the control circuit board, and the air outlet of the regulating air pump structure is connected to the atmosphere through the vent port of the reversing valve structure;

[0044] The air pump structure is regulated by speed control to adjust the air output, and the buffer tank structure is used to store gas to quickly establish negative pressure in the pipeline.

[0045] The negative pressure regulating valve in the pressure regulating valve assembly structure is further controlled by the control circuit board to cooperate with the monitoring pressure gauge to start regulating the working pressure of the negative pressure of the gas transmission in the pipeline until the preset standard negative pressure value is reached, and the gas transmission valve body structure and the gas transmission connecting pipe are connected to allow the negative pressure gas to quickly pass into the position between the projection display screen and the release film of the pull-up 3D light-curing printer, so that the release film can be more firmly adsorbed to the projection display screen.

[0046] A printing device comprises the auxiliary release device based on a 3D light-curing printer.

[0047] As a further solution of the present invention, it also includes:

[0048] Top-up 3D light-curing printer, projection display screen, release film, air intake side cavity and air intake channel;

[0049] The projection display screen and the release film are respectively arranged on the top-pull 3D light-curing printer, and the release film is attached to the projection display screen by vacuum negative pressure; the air inlet side cavity is opened at the outer side of the top-pull 3D light-curing printer corresponding to the projection display screen, and the air inlet side cavity is connected and arranged corresponding to the position between the projection display screen and the release film;

[0050] The air inlet channel is opened in the top-pull 3D light-curing printer, and the air inlet channel is connected to the air inlet side cavity; the air delivery valve body structure in the auxiliary release device is connected to the air inlet channel, and an air delivery passage is established between the air inlet channel and the air inlet side cavity through the air delivery valve body structure, and then the air is evenly delivered from the air inlet side cavity through the outer side.

[0051] The present invention has the following beneficial effects:

[0052] 1. The auxiliary release device can effectively form a positive and negative pressure adjustable switchable gas supply foundation by adjusting the air pump structure and coordinating the reversing valve body structure, and can further complete the auxiliary release process for the 3D light-curing printer through the pipe and the gas supply valve body structure. At the same time, the buffer tank structure can be used to effectively realize gas supply energy storage, so that the positive and negative pressures of the gas supply can be quickly switched, which significantly improves the auxiliary response speed in the release process. In addition, the pressure regulating valve assembly structure and the monitoring pressure gauge can be used to automatically adjust the connection pressure value of the gas supply valve body structure based on the preset positive and negative pressure values, thereby more accurately neutralizing and breaking the vacuum negative pressure between the projection display screen and the release film, so that the release film can restore its flexibility, thereby effectively reducing the release film pulling force, and improving the overall functional operation stability and practicality;

[0053] 2. The printing equipment has a simple structure, strong applicability, and flexible layout. It can optimize the release and film removal process, reduce the film removal force, reduce the impact force on the printed model, release film, and projection display screen, improve the quality of the printed model, extend the service life of the release film and projection display screen, and improve functional practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the implementation mode of the present invention or the technical solution in the prior art, the drawings required for the implementation mode or the description of the prior art will be briefly introduced below. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0055] Figure 1The present invention is a schematic diagram of the overall isometric structure of an auxiliary release device based on a 3D light-curing printer provided in an embodiment of the present invention.

[0056] Figure 2 A schematic diagram of the overall assembly structure of a printing device provided in an embodiment of the present invention.

[0057] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0058] Basic frame structure 1: base plate 11, first bracket 12, second bracket 13;

[0059] Regulating the air pump structure 2;

[0060] The reversing valve body structure 3 includes a reversing valve body 31, a vent port 32, and an air guide tube body 33;

[0061] Air pump fan structure 4;

[0062] Buffer tank structure 5, branch pipe 51;

[0063] Gas delivery valve body structure 6, gas delivery connecting pipe 61;

[0064] Pressure regulating valve assembly structure 7: positive pressure regulating valve 71, negative pressure regulating valve 72;

[0065] Monitoring pressure gauge 8; Control circuit board 9;

[0066] Top-down 3D light-curing printer a; projection display screen b; release film c; air inlet side cavity d; air inlet channel e; printed model f. DETAILED DESCRIPTION

[0067] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0068] The terms such as "upper", "lower", "left", "right", and "middle" used in this specification are only for the convenience of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the invention without substantially changing the technical content.

[0069] like Figure 1 to Figure 2As shown, the embodiment of the present invention provides an auxiliary release device based on a 3D light-curing printer and a printing device including the auxiliary release device, wherein the auxiliary release device includes a basic frame structure 1, a regulating air pump structure 2, a reversing valve body structure 3, an air pump fan structure 4, a buffer tank structure 5, an air delivery valve body structure 6, a pressure regulating valve assembly structure 7, a monitoring pressure gauge 8 and a control circuit board 9, which is used to effectively form a positive and negative pressure adjustable switchable air delivery foundation by coordinating the regulating air pump structure 2 with the reversing valve body structure 3, and can further cooperate with the air delivery valve body structure 6 to complete the 3D The auxiliary release process of the photocuring printer can also use the buffer tank structure 5 to effectively realize gas transmission and energy storage, so that the positive and negative pressures of the gas transmission can be quickly switched, which significantly improves the auxiliary response speed in the release process. In addition, the pressure regulating valve assembly structure 7 and the monitoring pressure gauge 8 can be used to automatically adjust the connection pressure value of the gas valve body structure 6 based on the preset positive and negative pressure values, thereby more accurately neutralizing and breaking the vacuum negative pressure between the projection display screen b and the release film c, so that the release film c can restore its flexibility, thereby effectively reducing the release film pulling force, and improving the overall functional operation stability and practicality. The specific settings are as follows:

[0070] Please refer to Figure 1 The basic frame structure 1 includes a base plate 11 and a first bracket 12 and a second bracket 13 respectively fixedly mounted on the base plate 11; wherein the first bracket 12 is configured as an inverted U-shaped bracket, and the second bracket 13 is configured as a vertical plate bracket, which is used to effectively serve as a positioning and assembly basis for each component structure through the base plate 11 and the first bracket 12 and the second bracket 13.

[0071] Specifically, the regulating air pump structure 2 is fixedly assembled on the base plate 11, and the electric drive end of the regulating air pump structure 2 is correspondingly arranged on the inner side of the inverted U-shaped first bracket 12, and the air delivery end of the regulating air pump structure 2 is correspondingly arranged on the outer side of the inverted U-shaped first bracket 12, and the air delivery end of the regulating air pump structure 2 respectively has an air inlet and an air outlet.

[0072] The reversing valve body structure 3 includes a reversing valve body 31, a vent port 32 and an air guide tube body 33; wherein the reversing valve body 31 is fixedly mounted on the top surface of the inverted U-shaped first bracket 12, and the two groups of air inlet ports of the reversing valve body 31 are connected to the air inlet and air outlet of the air delivery end of the regulating air pump structure 2 respectively via pipelines, one group of air outlet ports of the reversing valve body 31 is set as the vent port 32, and the other group of air outlet ports of the reversing valve body 31 is connected to the buffer tank via the air guide tube body 33. The structures 5 are connected and arranged to effectively realize adjustable switchable positive and negative pressure gas supply by adjusting the air pump structure 2. At the same time, it can make use of the established switching conduction function of the reversing valve body 31 and set the ventilation port 32 to always keep connected to the atmosphere, so that the two sets of inlet and outlet pipelines of the regulating air pump structure 2 can be effectively converted into a single set of air guide pipe body 33, and then the established air supply energy storage function can be realized by transmitting air in a single direction between the single set of air guide pipe body 33 and the buffer tank structure 5, and then the positive and negative pressures of the air supply can be quickly switched, thereby improving the auxiliary response effectiveness speed in the release process.

[0073] Please continue to refer to Figure 1 The air pump fan structure 4 is fixedly mounted on a side wall of the inverted U-shaped first bracket 12, and the air pump fan structure 4 is arranged correspondingly to the electric drive end of the regulating air pump structure 2 located on the inner side of the inverted U-shaped first bracket 12, so as to dissipate heat through the air pump fan structure 4 corresponding to the regulating air pump structure 2, and at the same time, a streamlined architecture can be integrated to reduce space occupancy.

[0074] The buffer tank structure 5 is fixedly assembled on the base plate 11, and the buffer tank structure 5 is correspondingly arranged on the inner side of the inverted U-shaped first bracket 12; the gas valve body structure 6 is fixedly assembled on the top end surface of the inverted U-shaped first bracket 12, and the input end of the gas valve body structure 6 is connected to the output end of the buffer tank structure 5 via a pipeline, and the output end of the gas valve body structure 6 is connected to a gas supply connecting pipe 61, which is used to utilize the gas valve body structure 6 as a blocking structure in the process of regulating the preset standard positive and negative pressure values, and when the preset standard positive and negative pressure values ​​are reached, the gas valve body structure 6 and the gas supply connecting pipe 61 can be connected to complete the auxiliary release process for the 3D light-curing printer.

[0075] For details, please refer to Figure 1, the pipeline between the buffer tank structure 5 and the gas transmission valve body structure 6 is also connected with a branch pipe 51, and the branch pipe 51 can be selected but not limited to a four-branch pipe; the pressure regulating valve assembly structure 7 includes a positive pressure regulating valve 71 and a negative pressure regulating valve 72, and the positive pressure regulating valve 71 and the negative pressure regulating valve 72 are respectively fixedly assembled on the other side wall of the inverted U-shaped first bracket 12, and the positive pressure regulating valve 71 and the negative pressure regulating valve 72 are respectively connected to the branch pipe 51 through a pipeline; the monitoring pressure gauge 8 is fixedly assembled on the top surface of the inverted U-shaped first bracket 12, and the monitoring pressure gauge 8 is connected to the branch pipe 51 through a pipeline; it is used to cooperate with the monitoring pressure gauge 8 through the positive pressure regulating valve 71 and the negative pressure regulating valve 72, thereby effectively realizing the regulation of the positive and negative pressure values ​​of the gas transmission based on the preset standard positive and negative pressure values.

[0076] The control circuit board 9 is fixedly mounted on the second bracket 13; specifically, the control circuit board 9 is provided with a power module and a control module connected by a circuit, and the control module can be selected from but not limited to a single-chip microcomputer control board of model AT80C51 and a microcontroller of model STM32; the control output end of the control module is connected to the input end of the relay through a circuit, and the output end of the relay is respectively connected to the regulating air pump structure 2, the reversing valve body 31 in the reversing valve body structure 3, the air pump fan structure 4, the air supply valve body structure 6, and the positive pressure regulating valve 71 and the negative pressure regulating valve 72 in the pressure regulating valve assembly structure 7 through a circuit; the monitoring pressure gauge 8 is connected to the control input end of the control module through a circuit; it is used to effectively realize the automatic operation and regulation of the overall functional architecture based on the control circuit board 9, which significantly improves the overall functional practicality.

[0077] The application method of the auxiliary release device based on the 3D light-curing printer comprises the following steps:

[0078] When the printed model f and the release film c in the pull-up 3D light-curing printer a are separated, the control circuit board 9 controls the air outlet of the regulating air pump structure 2 to be connected to the buffer tank structure 5 through the reversing valve body structure 3, and the speed of the regulating air pump structure 2 is controlled to complete the air output adjustment. At the same time, the buffer tank structure 5 is used to transport gas and store energy to quickly establish a positive pressure in the pipeline. At this time, the air inlet of the regulating air pump structure 2 is connected to the atmosphere through the vent port 32 of the reversing valve body structure 3;

[0079] Further, the positive pressure regulating valve 71 in the pressure regulating valve assembly structure 7 is controlled by the control circuit board 9 to start in cooperation with the monitoring pressure gauge 8, so as to adjust the working pressure of the positive pressure of the gas transmission in the pipeline to reach the preset standard positive pressure value, and when the preset standard positive pressure value is reached, the gas transmission valve body structure 6 and the gas transmission pipe 61 are connected to allow the positive pressure gas to quickly enter and break the vacuum negative pressure between the projection display screen b of the pull-up 3D light-curing printer a and the release film c, so that the release film c recovers its flexibility, effectively reduces the film pulling force between the printed model f and the release film c, and completes the separation process of the printed model f and the release film c;

[0080] When the top-pull 3D light-curing printer a is ready to print based on the release film c, the control circuit board 9 controls the air inlet of the regulating air pump structure 2 to be connected to the buffer tank structure 5 through the reversing valve body structure 3, and the speed of the regulating air pump structure 2 is controlled to complete the gas output adjustment. At the same time, the buffer tank structure 5 is used to transport gas and store energy to quickly establish a negative pressure in the pipeline. At this time, the air outlet of the regulating air pump structure 2 is connected to the atmosphere through the vent port 32 of the reversing valve body structure 3;

[0081] The negative pressure regulating valve 72 in the pressure regulating valve assembly structure 7 is further controlled by the control circuit board 9 to cooperate with the monitoring pressure gauge 8 to start regulating the working pressure of the negative pressure of the gas transmission in the pipeline until the preset standard negative pressure value is reached, and the gas transmission valve body structure 6 and the gas transmission connecting pipe 61 are connected to allow the negative pressure gas to quickly pass into the position between the projection display screen b and the release film c of the pull-up 3D light-curing printer a, so that the release film c is more firmly adsorbed to the projection display screen b, effectively improving the filling efficiency of the resin material, while ensuring the stability of the release film c during the printing process, and improving the printing accuracy, thereby completing the printing process of the printed model f.

[0082] Please refer to Figure 2The embodiment of the present invention further provides a printing device, which further comprises a top-pull 3D light-curing printer a, a projection display screen b, a release film c, an air inlet side cavity d and an air inlet channel e, wherein the projection display screen b and the release film c are respectively arranged on the top-pull 3D light-curing printer a, and the release film c is attached to the projection display screen b by vacuum negative pressure; the air inlet side cavity d is opened at the outer side of the top-pull 3D light-curing printer a corresponding to the projection display screen b, and the air inlet side cavity d is connected and arranged corresponding to the position between the projection display screen b and the release film c; the air inlet channel e is opened at the top-pull 3D light-curing printer a. , and the air inlet channel e is connected to the air inlet side chamber d, and the air delivery valve body structure 6 in the auxiliary release device is connected to the air inlet channel e through the air delivery pipe 61; it is used to establish an air delivery passage through the air delivery valve body structure 6, the air delivery pipe 61 and the air inlet channel e and the air inlet side chamber d in sequence, and then the air is evenly delivered from the air inlet side chamber d through the outer side, so as to optimize the release and film stripping process, reduce the film stripping force, reduce the impact force on the printed model f, the release film c and the projection display screen b, improve the quality of the printed model f, and extend the service life of the release film c and the projection display screen b. The overall structure is simple, the model is highly applicable, the layout is flexible, and the functional practicality of the equipment is significantly improved.

[0083] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An auxiliary release device based on a 3D light-curing printer, characterized in that: include: The air pump structure is regulated, and has an air inlet and an air outlet respectively; The input end of the reversing valve body structure is connected to the air inlet and the air outlet of the regulating air pump structure, and the output end of the reversing valve body structure is connected to a ventilation port and an air guide tube body, the ventilation port is used to always keep connected to the atmosphere, and the air guide tube body is used for positive / negative pressure gas transmission; The buffer tank structure has an input end connected to the air guide pipe body; The gas delivery valve body structure has an input end connected to the output end of the buffer tank structure, and the output end of the gas delivery valve body structure is used to be connected to the 3D light-curing printer through a pipeline; A pressure regulating valve assembly structure is connected between the output end of the buffer tank structure and the input end of the gas transmission valve structure, and is used to adjust the positive / negative pressure of the gas transmission to a standard pressure value; The control circuit board is respectively connected with the regulating air pump structure, the reversing valve body structure, the gas delivery valve body structure and the pressure regulating valve assembly structure through circuits.

2. The auxiliary release device based on a 3D light-curing printer according to claim 1, characterized in that: Also includes: The basic frame structure comprises a base plate and a first bracket and a second bracket respectively fixed to the base plate, wherein the first bracket is configured as an inverted U-shaped bracket and the second bracket is configured as a vertical plate bracket; The regulating air pump structure is fixedly mounted on the base plate, and the electric drive end of the regulating air pump structure is correspondingly arranged on the inner side of the inverted U-shaped first bracket; The gas delivery end of the regulating air pump structure is correspondingly arranged at the outer side of the inverted U-shaped first bracket, and the gas delivery end of the regulating air pump structure has an air inlet and an air outlet respectively; The reversing valve body structure is fixedly mounted on the top surface of the inverted U-shaped first bracket; The buffer tank structure is fixedly mounted on the base plate, and the buffer tank structure is correspondingly arranged on the inner side of the inverted U-shaped first bracket; The gas delivery valve body structure is fixedly mounted on the top surface of the inverted U-shaped first bracket; The control circuit board is fixedly mounted on the second vertical plate bracket.

3. The auxiliary release device based on the 3D light-curing printer according to claim 2, characterized in that: Also includes: The air pump fan structure is fixedly mounted on a side wall of the inverted U-shaped first bracket. The air pump fan structure is arranged correspondingly between the electric drive end of the regulating air pump structure located on the inner side of the inverted U-shaped first bracket, and heat is dissipated by the air pump fan structure corresponding to the regulating air pump structure.

4. The auxiliary release device based on a 3D light-curing printer according to claim 2, characterized in that: The reversing valve body structure comprises a reversing valve body; The two groups of air inlet ports of the reversing valve body are connected to the air inlet and air outlet of the air delivery end of the regulating air pump structure in a one-to-one correspondence through pipelines; One of the gas outlet ports of the reversing valve body is set as the vent port, and the vent port is always connected to the atmosphere through the predetermined reversing conduction effect of the reversing valve body; And another group of air outlet ports of the reversing valve body are connected and arranged between the air guide tube body and the buffer tank body structure, and the two groups of air inlet and outlet pipelines of the regulating air pump structure are converted into a single group of the air guide tube body for air transmission through the reversing valve body, and then the established air transmission and energy storage function is realized by transmitting air in a single direction between the single group of the air guide tube body and the buffer tank body structure.

5. The auxiliary release device based on a 3D light-curing printer according to claim 4, characterized in that: Also includes: A monitoring pressure gauge, fixedly mounted on the top surface of the inverted U-shaped first bracket; The pipeline between the buffer tank structure and the gas delivery valve structure is connected with a branch pipe; The pressure regulating valve assembly structure includes a positive pressure regulating valve and a negative pressure regulating valve; The positive pressure regulating valve and the negative pressure regulating valve are respectively fixedly connected to the first inverted U-shaped bracket, and the positive pressure regulating valve and the negative pressure regulating valve are respectively connected to the branch pipe; The monitoring pressure gauge is connected to the branch pipe via a pipeline, and the monitoring pressure gauge cooperates with the positive pressure regulating valve and the negative pressure regulating valve to adjust the positive / negative pressure value of the gas transmission.

6. The auxiliary release device based on a 3D light-curing printer according to claim 5, characterized in that: The control circuit board is provided with a power module and a control module connected via a circuit; The control output end of the control module is connected to the input end of the relay through a circuit, and the output end of the relay is respectively connected to the regulating air pump structure, the reversing valve body in the reversing valve body structure, the gas delivery valve body structure, and the positive pressure regulating valve and the negative pressure regulating valve in the pressure regulating valve assembly structure through a circuit; The monitoring pressure gauge is connected to the control input end of the control module via a circuit.

7. An application method of the auxiliary release device based on a 3D light-curing printer according to any one of claims 1 to 6, characterized in that: The steps include: When the printed model in the top-pull 3D light-curing printer is separated from the release film, the air outlet of the regulating air pump structure is connected to the buffer tank structure through the reversing valve body structure through the control circuit board, and the air inlet of the regulating air pump structure is connected to the atmosphere through the vent port of the reversing valve body structure; The air pump structure is controlled to adjust the speed and adjust the air output. At the same time, the buffer tank structure is used to store gas and quickly establish a positive pressure in the pipeline. Further, the positive pressure regulating valve in the pressure regulating valve assembly structure is controlled by the control circuit board to start in cooperation with the monitoring pressure gauge, so as to adjust the working pressure of the positive pressure of the gas transmission in the pipeline to reach the preset standard positive pressure value; When the preset standard positive pressure value is reached, the gas supply valve body structure and the gas supply pipe are connected to allow the positive pressure gas to quickly enter and break the vacuum negative pressure between the projection display screen of the 3D light-curing printer and the release film, so that the release film recovers its flexibility, reduces the film pulling force between the printed model and the release film, and completes the separation process.

8. The application method of the auxiliary release device based on the 3D light-curing printer according to claim 7, characterized in that: The following steps are also included: When the top-pull 3D light-curing printer is ready to print based on the release film, the air inlet of the regulating air pump structure is connected to the buffer tank structure through the reversing valve structure through the control circuit board, and the air outlet of the regulating air pump structure is connected to the atmosphere through the vent port of the reversing valve structure; The air pump structure is regulated by speed control to adjust the air output, and the buffer tank structure is used to store gas to quickly establish negative pressure in the pipeline. The negative pressure regulating valve in the pressure regulating valve assembly structure is further controlled by the control circuit board to cooperate with the monitoring pressure gauge to start regulating the working pressure of the negative pressure of the gas transmission in the pipeline until the preset standard negative pressure value is reached, and the gas transmission valve body structure and the gas transmission connecting pipe are connected to allow the negative pressure gas to quickly pass into the position between the projection display screen and the release film of the pull-up 3D light-curing printer, so that the release film can be more firmly adsorbed to the projection display screen.

9. A printing device, characterized in that: It comprises an auxiliary release device based on a 3D light-curing printer as described in any one of claims 1 to 6.

10. The printing device according to claim 9, characterized in that Also includes: Top-up 3D light-curing printer, projection display screen, release film, air intake side cavity and air intake channel; The projection display screen and the release film are respectively arranged on the top-pull 3D light-curing printer, and the release film is attached to the projection display screen by vacuum negative pressure; the air inlet side cavity is opened at the outer side of the top-pull 3D light-curing printer corresponding to the projection display screen, and the air inlet side cavity is connected and arranged corresponding to the position between the projection display screen and the release film; The air inlet channel is opened in the top-pull 3D light-curing printer, and the air inlet channel is connected to the air inlet side cavity; the air delivery valve body structure in the auxiliary release device is connected to the air inlet channel, and an air delivery passage is established between the air inlet channel and the air inlet side cavity through the air delivery valve body structure, and then the air is evenly delivered from the air inlet side cavity through the outer side.

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