CN112497730A

CN112497730A - Distributed photocuring three-dimensional printing system

Info

Publication number: CN112497730A
Application number: CN202110167682.5A
Authority: CN
Inventors: 季鹏凯
Original assignee: Yuanzhi Technologies Shanghai Co ltd
Current assignee: Yuanzhi Technologies Shanghai Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-03-16
Anticipated expiration: 2041-02-07
Also published as: CN112497730B

Abstract

The invention relates to a distributed photocuring three-dimensional printing system which comprises a printing station, a photosensitive material recycling station, a light-transmitting piece and a forming chamber, wherein the light-transmitting piece is arranged on the printing station or detachably and hermetically arranged on a cylinder sleeve, a first pumping device is connected with a photosensitive material box through a pipeline, when photocuring printing is carried out in the printing station, the forming chamber supplies photosensitive material to a forming cavity in the cylinder sleeve through the first pumping device, a light source emits a controllable light beam with a printing layer pattern shape to irradiate the photosensitive material on a forming platform through the light-transmitting piece to form a curing model, after printing is completed, the forming chamber is switched to the photosensitive material recycling station to return the uncured photosensitive material to the photosensitive material box and take out the curing model from the forming chamber, and the printing station is switched to the forming chamber to carry out photocuring printing. The invention can reduce the influence of the discharging and mold taking processes on the switching printing between the models and improve the utilization rate of equipment.

Description

Distributed photocuring three-dimensional printing system

Technical Field

The invention belongs to the technical field of photocuring three-dimensional printing, and particularly relates to a distributed photocuring three-dimensional printing system.

Background

After each time the photocuring three-dimensional printing finishes printing one model, the model needs to be taken down, the platform is reset to the printing starting state to start printing the next model, and the effective working time of the printing device is usually wasted in the process of taking the model. In addition, the process of taking out the model after printing is completed for the closed type photo-curing three-dimensional (3D) printing device may be more complicated than the conventional non-sealed printing method. For example, closed photocuring printing device probably lets platform and cylinder liner inner wall sliding seal cooperation, from the terminal surface seal of type membrane at the cylinder liner for platform, cylinder liner and form sealed printing chamber from the type membrane, fill photosensitive resin at printing the intracavity, the light beam is through shining photosensitive resin from the type membrane and carry out solidification layer upon layer, and the solidification layer that forms can combine layer upon layer to form the module and combine to the platform. Each printing completion may require emptying the photosensitive resin in the printing chamber, opening the sealed printing chamber to take out the mold, and then starting the next printing of the mold, and the process of switching the printing between the molds may reduce the overall application efficiency, especially for the application in the mass production mode in a factory, which is very necessary to improve the overall printing efficiency.

Disclosure of Invention

The invention aims to provide a distributed photocuring three-dimensional printing system, which reduces the influence of the discharging and mold taking processes on the switching printing between models and improves the utilization rate of equipment.

The technical scheme adopted by the invention to solve the technical problems is to provide a distributed photocuring three-dimensional printing system which comprises a photosensitive material recovery station, at least one printing station and at least one forming chamber, wherein the forming chamber comprises a forming platform and a cylinder sleeve, the forming platform can be arranged in the cylinder sleeve in an axially movable manner along the cylinder sleeve and keeps a seal with the cylinder sleeve, the printing station comprises a light source, a light-transmitting piece and a first pumping device, the photosensitive material recovery station comprises a photosensitive material box, the first pumping device is connected with the photosensitive material box through a pipeline, when the forming chamber carries out photocuring printing in the printing station, the cylinder sleeve, the forming platform and the light-transmitting piece form a sealed forming cavity, the first pumping device provides photosensitive material to the forming cavity in the cylinder sleeve, and a light beam with a controllable printing layer pattern shape is emitted by the light source and irradiates the photosensitive material to form a curing model on the forming platform through the light-transmitting piece, and after printing is finished, the forming chamber is sent to a photosensitive material recycling station, the photosensitive material which is not solidified is returned to a photosensitive material box, the solidified model is taken out from the forming chamber, and the printing station is installed in the forming chamber and then photocured and printed.

And when the forming chamber is positioned at the printing station, the forming cavity in the cylinder sleeve is connected with the first pumping device through the quick connector.

And when the forming chamber is positioned in the photosensitive material recycling station, the forming cavity in the cylinder sleeve is communicated with the second pumping device through the quick connector, and the uncured photosensitive material is returned to the photosensitive material box through the second pumping device.

The printing station is characterized in that the light-transmitting piece comprises a light-permeable release piece, the release piece is a release film or a release plate, when the forming carriage is located at the printing station, the release piece is switched between the printing position and the peeling position by controlling the pressure of a photosensitive material in the forming cavity, when the release piece is located at the printing position, the release piece is located at a preset position and is of a flat structure, and the pressure of the photosensitive material is increased so that the contact part of the release piece and the curing model moves towards the direction far away from the curing model and is peeled from the curing model, and the release piece is located at the peeling position.

When the release piece is a release film, the light-transmitting piece further comprises a light-transmitting plate with a light-transmitting middle area, the light-transmitting plate is arranged on the other side, opposite to the curing model, of the release film, a gap is formed between the light-transmitting plate and the release film, and when the pressure of the photosensitive material is increased to enable the release film to be protruded and deformed towards the direction of the light-transmitting plate, the maximum protrusion of the release film is limited by the light-transmitting plate; when the off-type piece is the off-type plate, the light-transmitting piece further comprises a supporting component, the supporting component comprises a supporting limiting part and an elastic piece, the supporting limiting part comprises a limiting end, and when the pressure of the photosensitive material is increased to enable the off-type plate to move towards the direction of the light-transmitting plate, the limiting end limits the displacement of the off-type plate.

The printing station further comprises a feeding hole and a discharging hole which are arranged close to the light-transmitting piece and on two opposite sides of the light-transmitting piece, when the forming chamber is located in the printing station, the feeding hole and the discharging hole are communicated with the forming cavity of the forming chamber, the feeding hole is connected to a first pumping device, the discharging hole is connected with the first pumping device or a pipeline or a photosensitive material box through a discharging pipe, and a radiator is arranged on the discharging pipe.

The printing station further comprises a support, a supporting and pressing mechanism and a forming platform driving mechanism, the light-transmitting part is installed on the support, the forming chamber is placed on the supporting and pressing mechanism when located in the printing station, the cylinder sleeve is pressed through the supporting and pressing mechanism so that direct or indirect sealing matching is formed between the cylinder sleeve and the light-transmitting part, and the forming platform is driven to move axially along the cylinder sleeve through the forming platform driving mechanism.

The photosensitive material recycling station comprises a support, a supporting and pressing mechanism and a forming platform driving mechanism, a sealing element is installed on the support, a photosensitive material returning channel and a photosensitive material box are arranged on the support and communicated, the forming box is placed on the supporting and pressing mechanism when being located in the photosensitive material recycling station and presses a cylinder sleeve through the supporting and pressing mechanism, so that sealing fit is formed between the cylinder sleeve and the sealing element, a forming cavity of the cylinder sleeve is communicated with the photosensitive material returning channel, and the forming platform drives the cylinder sleeve to move axially through the forming platform driving mechanism.

The forming platform driving mechanism comprises a guide rail, a platform connecting rod and a driving mechanism, the guide rail is arranged along the axial direction of the cylinder sleeve, the platform connecting rod is slidably arranged on the guide rail, and the platform connecting rod is driven by the driving mechanism to slide along the guide rail and drive the forming platform to axially move along the cylinder sleeve.

The supporting and pressing mechanism comprises a supporting platform and a supporting spring, the supporting platform is slidably mounted on the guide rail, the forming chamber is placed on the supporting platform, the other side, opposite to the forming chamber, of the supporting platform is supported by the supporting spring to press the cylinder sleeve, and when the supporting platform is driven by the platform connecting rod to slide along the guide rail and compress the supporting spring, the cylinder sleeve is released from being pressed.

And a stop block for preventing the forming platform from slipping is arranged at the bottom of the cylinder sleeve.

An output transmission line and a loop transmission line for transmitting the forming chamber are arranged between the printing station and the photosensitive material recovery station; the output conveyor line is on the output side of the printing station and the return conveyor line is on the input side of the printing station, the printed former compartment being moved out of the output side to the output conveyor line and the empty former compartment being moved from the input side from the return conveyor line into the printing station.

A distributed photocuring three-dimensional printing system comprises at least one forming box, a photosensitive material recycling station and at least one printing station, wherein the forming box comprises a forming platform, a cylinder sleeve and a light-transmitting piece, the forming platform can be arranged in the cylinder sleeve in a movable mode along the axial direction of the cylinder sleeve and keeps a seal with the cylinder sleeve, the printing station comprises a light source and a first pumping device, the photosensitive material recycling station comprises a photosensitive material box, the first pumping device is connected with the photosensitive material box through a pipeline, when the forming box performs photocuring printing in the printing station, the cylinder sleeve, the forming platform and the light-transmitting piece form a sealed forming cavity, the photosensitive material is provided for the forming cavity in the cylinder sleeve through the first pumping device, a pattern-shaped controllable light beam of a printing layer is emitted through the light source, the photosensitive material is irradiated on the forming platform through the light-transmitting piece to form a curing model, and the forming box sends the photosensitive material which is not cured back to the photocuring material recycling station after printing is completed, and returns the And the sensitive box takes out the curing model from the forming box, and the printing station is loaded into the forming box for photocuring printing.

The forming chamber further comprises a frame, a platform connecting rod and a driving mechanism, the cylinder sleeve is mounted on the frame, and the platform connecting rod is respectively connected with the forming platform and the driving mechanism and drives the forming platform to move along the axial direction of the cylinder sleeve through the driving mechanism; guiding and positioning mechanisms matched with each other are arranged between the frame and the printing station and/or the photosensitive material recovery station; and a connector for electric transmission is arranged between the frame and the printing station and/or the photosensitive material recycling station.

The photosensitive material recycling station is arranged in an isolation area separated from the printing station, and a cleaning station and/or a secondary reinforcing station are/is arranged in the isolation area.

Advantageous effects

Firstly, the invention can realize the switching work of the molding carriage between the printing station and the photosensitive material recycling station, after the molding carriage finishes printing in the printing station, the molding carriage can be switched (i.e. transferred) to the photosensitive material recycling station, the photosensitive material which is not solidified is returned to the photosensitive material box, and meanwhile, the vacant printing station can be switched (i.e. loaded) into other molding carriages for photocuring printing, so that the printing station can be kept in a printing state for more time, the influence of the discharging and mold taking processes on the switching printing between the models is reduced, the utilization rate of relevant equipment (such as a light source) of the printing station and the molding carriage is improved, the production speed is improved, and the production cost is reduced.

Secondly, the multiple printing stations can be reasonably arranged to share one photosensitive material recycling station according to the printing time of the model and the emptying and mold taking time, so that the utilization rate of the photosensitive material recycling station can be greatly improved, and the overall average usage amount of the photosensitive material can be greatly reduced.

Thirdly, the printing station and the photosensitive material recycling station can be separated, the printing and monitoring process of the model is mainly carried out in the printing station, the printing station does not relate to the processes of recycling the photosensitive material and taking out the model, the contact between personnel and the photosensitive material can be reduced, and the environmental friendliness is greatly improved.

Drawings

Fig. 1a is a schematic structural view of a molding carriage located at a printing station according to embodiment 1 of the present invention.

Fig. 1b is a schematic structural view of a forming chamber located at a photosensitive material recycling station in embodiment 1 of the present invention.

Fig. 1c is a schematic structural view of a switching forming carriage of the printing station according to embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.

Fig. 3 is a schematic structural diagram of embodiment 3 of the present invention.

Fig. 4a is a schematic structural diagram of the indirect sealing and pressing fit state of the cylinder sleeve and the light-transmitting member (release film) when the forming carriage is located at the printing station in embodiment 3.

Fig. 4b is a schematic structural diagram of the state that the cylinder liner and the light-transmitting member (release film) are separated from sealing and press-fit when the forming carriage is located at the printing station in embodiment 3.

Fig. 4c is a schematic view of the printing station of fig. 4a or 4b after removal of the forming carriage.

Fig. 4d is a schematic structural diagram of the indirect sealing and pressing fit state of the cylinder sleeve and the light-transmitting member (centrifugal plate) when the forming carriage is positioned at the printing station in embodiment 3.

Fig. 4e is the schematic diagram of the cylinder liner and the light-transmitting member (centrifugal plate) separated from the sealing and press-fitting state when the forming carriage is located at the printing station in embodiment 3.

Fig. 4f is a schematic view of the printing station of fig. 4d or 4e with the forming carriage removed.

FIG. 5 is a schematic view showing the molding carriage taken out of the printing station in embodiment 3.

FIG. 6a is a schematic structural diagram of the cylinder liner and the sealing member in a press-fit state when the forming chamber is located at the photosensitive material recycling station in example 3.

FIG. 6b is a schematic view showing the back feeding state of the uncured photosensitive material in the case where the molding box is located at the photosensitive material recycling station in example 3.

FIG. 6c is a schematic view showing the mold removal state of the molding box of example 3 at the photosensitive material recycling station.

FIG. 6d is a schematic view showing the cured mold of example 3 after it is removed when the molding box is located at the photosensitive material recycling station.

FIG. 6e is the schematic view of the light-sensitive material recycling station after the forming chamber is removed in example 3.

FIG. 7 is a schematic view showing the molding box of example 3 after it is taken out of the photosensitive material recycling station.

Fig. 8a is a schematic view of the forming carriage at the printing station in embodiment 4 of the present invention.

FIG. 8b is a schematic view of the forming chamber located at the light-sensitive material recycling station in embodiment 4 of the present invention.

Fig. 8c is a schematic structural view of a printing station switching forming carriage in embodiment 4 of the present invention.

Fig. 9 is a schematic structural diagram of embodiment 5 of the present invention.

FIGS. 10a to 10d are schematic views illustrating a process of peeling the light-transmissive member from the curing mold.

FIGS. 11a-11c are schematic views illustrating another process for peeling the light-transmissive member from the curing mold.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

Example 1

Fig. 1a illustrates a photo-curing printing system, which includes a printing station 10, a photosensitive material recycling station 20 and a pipeline 42, wherein the printing station 10 is provided with a light source 37 and a first pumping device 41, and the photosensitive material recycling station 20 is provided with a photosensitive material box 49 and a photosensitive material guiding mechanism. A line 42 connects the photosensitive material tank 49 of the photosensitive material recycling station 20 to the first pumping device 41 of the printing station 10. The photocuring three-dimensional printing system further comprises a forming chamber 40, wherein the forming chamber 40 comprises a cylinder sleeve 2 and a forming platform 1, and the forming platform 1 is in sliding sealing fit with the inner wall of the cylinder sleeve 2. The forming carriage 40 may be mounted to the printing station 10. Light-transmitting member 30 and cylinder liner 2 relatively fixed and sealed, cylinder liner 2, shaping platform 1 and light-transmitting member 30 form sealed shaping chamber, first pumping device 41 communicates with the shaping chamber of cylinder liner 2, photosensitive material of photosensitive material workbin 49 in photosensitive material recycle bin 20 is pumped into the shaping intracavity through pipeline 42 to first pumping device 41, and the pressure of photosensitive material 5 in the control shaping intracavity, light beam 39 that light source 37 sent sees through light-transmitting member 30 and shines photosensitive material 5 in the shaping intracavity and form the solidification layer, shaping platform 1 can move towards the direction of keeping away from light-transmitting member 30, pile up the solidification layer upon layer, form solidification model 51 on shaping platform 1.

After the curing mold 51 is printed, the forming chamber 40 can be switched from the printing station 10 to the photosensitive material recycling station 20, for example, optimally, the pressure in the forming chamber can be reduced, and then the forming chamber 40 can be removed from the printing station 10 and transferred to the photosensitive material recycling station 20, as shown in fig. 1 b. Fig. 1a and 1b show that a through-hole or a line can also be provided on the forming table 1, which is connected to the first pumping device 41. The first quick coupling 46a can be arranged for pipeline connection, after printing is completed, the first quick coupling 46a is directly pulled out, the photosensitive material recycling station 20 can also be provided with a similar quick coupling 46b, the photosensitive material recycling station 20 is connected with the second quick coupling 46b, and the uncured photosensitive material 5 in the forming cavity is pumped into the photosensitive material box 49 by the second pumping device 41V of the photosensitive material recycling station 20. As shown in fig. 1c, the uncured photosensitive material 5 in the forming chamber 40 is discharged and returned to the photosensitive material box 49, the forming platform 1 moves upwards to remove the cured mold 51 from the cylinder sleeve 2, and the cured mold 51 is taken out, in this process, if the forming chamber 40 further comprises the light-transmitting member 30, the light-transmitting member 30 is firstly opened or disassembled, and then the forming platform 1 moves upwards to expose the cured mold 51, so that the cured mold 51 can be conveniently taken out. At the same time, a new forming car 40-1 can be loaded at the printing station 10 for printing of the next model. Fig. 1a to 1c also show that the light-transmitting member 30 is fixedly sealed to the cylinder casing 2 as part of the forming box 40, although the light-transmitting member 30 may also be fixed to the printing station 10.

The process of taking out the model at the photosensitive material recycling station and printing at the printing station can be carried out simultaneously in the embodiment, the printing station can be kept in a printing state for more time, and the process of discharging the uncured photosensitive material 5 and taking out the cured model is completed by the photosensitive material recycling station without occupying the printing station.

Example 2

When a plurality of printing stations share the same photosensitive material recycling station, such as the

printing stations

10a, 10b, 10c, and 10d schematically shown in fig. 2, connected to the same photosensitive material recycling station 20 via a pipeline 42, each printing station may be vertical or horizontal, such as the printing station 10d, can be a structure with an upper light source such as the

printing station

10a or 10b, or a structure with a lower light source such as the printing station 10c, the printing stations can be flexibly arranged, and the photosensitive material recycling station can be repeatedly used, in addition, the utilization rate of the photosensitive material recycling station can be greatly improved, and the usage amount of the photosensitive material of each printing station can be greatly reduced, for example, if the time for removing the mold and returning the forming box to the original printing state is 5 minutes and the mold printing time is 30 minutes, one photosensitive material recycling station can be matched with about 6 photocuring printing stations. The use process of a plurality of printing stations to photosensitive material is most not totally synchronous, then the shaping railway carriage or compartment of accomplishing the printing can send photosensitive material back to photosensitive material recycle bin and can share other printing stations of printing and use. The speed of extracting photosensitive material from the photosensitive material box of the photosensitive material recycling station by the printing station in the printing process does not need to be high, as long as the printing speed requirement is met, the pipeline 42 can be set to be thin, the speed is expected to be as high as possible when uncured photosensitive material is released to the photosensitive material box by the printing station, if the pipeline 42 is set to be thick, although the speed of releasing the uncured photosensitive material to the photosensitive material box by the printing station can be improved, the amount of the photosensitive material stored in the pipeline 42 can be greatly increased, the using amount of the photosensitive material is increased, in addition, if a plurality of printing stations share the same photosensitive material recycling station, the arrangement of production lines and other factors, a certain distance can be formed between the printing station and the photosensitive material recycling station, and the thick pipeline 42 is not economical. So send photosensitive material recycle bin through the shaping railway carriage or compartment that will print the completion to release uncured photosensitive material and take out the model, can change new shaping railway carriage or compartment for printing the station simultaneously, so can promote the utilization ratio of printing the station by a wide margin, promote production speed, pipeline between photosensitive material recycle bin and the printing station can set up again is very tiny, a plurality of printing stations can share the photosensitive material of the storage of photosensitive material recycle bin, reduce the resin use amount, effectively reduce application cost. A filter can be arranged on the resin pipeline 42 to filter impurities in the resin, or the filter is arranged on a pipeline which flows into the photosensitive material recycling station from the molding cavity at the photosensitive material recycling station to prevent semi-solidified impurities from entering a photosensitive material box of the photosensitive material recycling station. In addition, the light-sensitive material recycling station 20 can also accommodate multiple forming boxes, increase the speed of taking the forms, and can share the same light-sensitive material box 49.

The photosensitive material recycling station can be isolated from the printing station, for example, fig. 2 shows that the photosensitive material recycling station 20 is arranged in an isolation area 200 isolated from the printing station, so that the area of the printing station can be completely or rarely contacted with the photosensitive material, the environmental friendliness is improved, for example, the printing station can be arranged in an office area, the photosensitive material is mainly treated in the photosensitive material recycling station, and the cleaning device 75 can be arranged in the isolation area 200, so that the centralized ventilation and the protection treatment on operators are facilitated, and the application cost is reduced; through shaping railway carriage or compartment reuse, the photosensitive material in photosensitive material recycle bin and the photosensitive workbin wherein is shared to a plurality of printing stations, raises the efficiency, reduce cost. It is also possible to have a separate area 200 at the light-sensitive material recycling station, such as a separate room, a further uv curing device, or a heat curing device. Separately from the printing station, this opening of the forming carriage and removal of the mould avoids the spread of resin odours to the printing equipment area, keeps the printing station area air clean and avoids contamination of the resin material. And moreover, an automatic device for disassembling the model can be arranged at the photosensitive material recycling station, so that the efficiency of disassembling the model is improved. The molding box can be conveyed to a photosensitive material recycling station in a conveying belt, a trolley and the like, and wheels can be arranged at the bottom of the molding box to push the molding box to the photosensitive material recycling station. The photosensitive material recycling station can set the forming carriage to an initial printing state, and then the forming carriage is conveyed to the printing station to replace the forming carriage after printing is completed.

Example 3

Fig. 3 illustrates a new embodiment, in which the printing station 10 includes a frame 91, the light-transmitting member 30 is mounted on the frame 91, the printing station 10 further includes a first support platform 18a, the first support platform 18a is movable along the first rail 69, and a first support spring 96 is disposed below the first support platform 18 a. The printing station 10 further includes a first platform link 11a, the first platform link 11a is driven by a first driving mechanism 15 (e.g., a screw pair driven by a motor) to move along the first guide rail 69, and the first supporting platform 18a and the first platform link 11a may share the same guide rail, or different guide rails may be used, but the two guide rails should be substantially parallel to each other. A forming platform 1 can be arranged above the first platform connecting rod 11a, and the forming platform 1 is in sliding sealing fit with the inner wall of the cylinder sleeve 2. The first guide rail 69 is substantially parallel to the axis of the cylinder liner 2. The first support platform 18a pushes the cylinder liner 2 upward against the optically transparent member 30 under the action of the first support spring 96, so that the optically transparent member 30, the cylinder liner 2 and the forming platform 1 form a sealed forming cavity. Fig. 4a illustrates a structure in which the light-transmitting member 30 is a light-transmitting release film. Fig. 4e illustrates a structure in which the light-transmitting member 30 is a light-transmitting off-plate.

Referring to fig. 3, 6a and 6b, the photosensitive material recycling station 20 is schematically illustrated, and includes a second supporting platform 18b, the second supporting platform 18b can move along a second guiding rail 69b, and a second supporting spring 96b is disposed below the second supporting platform 18b, the second platform connecting rod 11b is driven by a second driving mechanism 15b to move along the second guiding rail 69b, although the second supporting platform 18b and the second platform connecting rod 11b may share the same guiding rail, and certainly, different guiding rails may be used, but the two guiding rails should be substantially parallel to each other. The cylinder liner 2 of the forming chamber 40 is pushed upwards by the second supporting platform 18b and the second supporting spring 96b below to abut against the sealing member 21b to fix the cylinder liner 2, and the second driving mechanism 15b can drive the second platform connecting rod 11b to push the forming platform 1 upwards to slide along the inner wall of the cylinder liner 2. The photosensitive hopper 49 stores photosensitive material and is in communication with the printing station 10 via line 42.

Referring to fig. 3, 4a and 4d, during the printing process, the first pumping device 41 injects the photosensitive material 5 into the forming cavity and reaches a set pressure, the light source 37 of the printing station 10 emits a light beam 39 to selectively irradiate the photosensitive material 5 in the forming cavity through the light-transmitting member 30, the forming platform 1 moves downwards along the first guide rail 69 with the first platform connecting rod 11 driven by the first driving mechanism 15, the cured layer formed by layer irradiation is combined on the forming platform to form the cured model 51, the specific printing process of the embodiment of the light-transmitting member 30 using the release film can refer to fig. 10a to 10d, and the specific printing process of the embodiment of the light-transmitting member 30 using the release film can refer to fig. 11a to 11 c. The solidifying pattern 51 is bonded to the shaping platform 1, i.e. the solidifying pattern 51 may be directly bonded to the shaping platform 1 or the shaping plate 12 may be provided on the upper surface of the shaping platform 1, and the solidifying pattern 51 is bonded to the shaping platform 1 indirectly by bonding to the shaping plate 12. The setting of the model plate 12 can facilitate taking the model plate 12 off the forming platform 1 and taking down the curing model 51, so that the model can be taken out conveniently, and the next model can be printed by replacing a new model plate 12, thereby improving the application efficiency.

After the printing is completed, as shown in fig. 4b or 4e, the first driving mechanism 15 drives the first platform link 11a to move downwards, the first platform link 11a includes the supporting plate 11a-1, the vertical guide rod 11a-2 and the connecting guide rod 11a-3 which are connected with each other, the supporting plate 11a-1 moves downwards to the bottom of the cylinder liner 2 and presses against the upper surface of the first supporting platform 18a, then the first platform link 11a moves downwards continuously, the first supporting platform 18a is pressed downwards by the supporting plate 11a-1 to compress the first supporting spring 96, so that the first supporting platform 18a moves downwards, the cylinder liner 2 is separated from the light-transmitting member 30 or the mounting seat 28, and then the forming box 40 can be taken out, after the forming box 40 is taken out by the printing station 10 with the light-transmitting member being a release film, as shown in fig. 4c, the light-transmitting member takes out the forming box 40 for the printing station 10 with the separated plate, as shown in fig. 4f, the removed molding box 40 with the cured mold 51 and the uncured photosensitive material 5 is shown in fig. 5. The stop block 2a can be arranged at the lower end of the cylinder sleeve 2, so that the bottom of the forming platform 1 can be blocked, and the forming platform 1 cannot be separated from the cylinder sleeve 2. A sealing ring 21 can be arranged between the forming platform 1 and the cylinder sleeve 2, and a sealing part does not need to be arranged between the model plate 12 and the cylinder sleeve 2 or the forming platform 1, so that the disassembly and the model taking are convenient.

The forming carriage 40 moves to the photosensitive material recycling station 20, the second supporting platform 18b of the photosensitive material recycling station 20 can be driven by the second platform connecting rod 11b (the second platform connecting rod 11b is driven by the second driving mechanism 15 b) to press the second supporting spring 96b downwards, as shown in fig. 6d, the forming carriage 40 can be conveniently mounted on the second supporting platform 18b, then the second driving mechanism 15b drives the second platform connecting rod 11b to move upwards, and the second supporting platform 18b moves upwards under the action of the second supporting spring 96b to push the cylinder sleeve 2 to press on the sealing member 21b, as shown in fig. 6 a. Then the second platform connecting rod 11b continuously moves upwards to push the forming platform 1 to move upwards, the uncured photosensitive material 5 is pushed out of the cylinder sleeve 2, and is fed back from the photosensitive material return passage 44 to the photosensitive hopper 49 as shown in fig. 6b, along arrow 79, until the forming table 1 and the pattern plate 12 are moved to the uppermost position of the cylinder casing 2, as shown in fig. 6c, so that the solidified pattern 51 or the pattern plate 12 can be easily taken out, then a new pattern plate 12 can be replaced and the second platform link 11b is moved down until the bottommost and pressing down second support platform 18b compresses the second support spring 96b moving down, allowing the bore liner 2 to fall off and disengage the seal 21b, as shown in figure 6d, the forming car 40 can then be easily removed, the station for recovering the light-sensitive material from which the forming car is removed is shown in fig. 6e, and the forming car 40 from which the cured mold and the uncured light-sensitive material are removed is shown in fig. 7.

Fig. 4a also illustrates an embodiment of the light-transmitting member 30, in which the light-transmitting member 30 includes a light-transmitting plate 35a, a first supporting ring 35b and a second supporting ring 35c respectively disposed at two sides of the light-transmitting plate 35a, and a light-transmitting release film 33. The release film 33 is located between the first support ring 35b and the cylinder liner 2, and maintains a seal with the cylinder liner 2. When the pressure of the photosensitive material 5 is increased, the release film 33 deforms and abuts against the light-transmitting plate 35a, separation of the release film 33 and the curing model is achieved, when the pressure of the photosensitive material 5 is adjusted to a preset value for printing, the release film 33 is restored to a flat state, and the light beam 39 can perform irradiation curing of the next layer. The thicknesses of the first support ring 35b and the second support ring 35c may be different, and the second support ring 35c may be disposed between the transparent plate 35a and the release film 33 by turning the pre-assembly composed of the transparent plate 35a, the first support ring 35b, and the second support ring 35c upside down, so that the deformation amount of the release film 33 that deforms under the pressure of the high-pressure photosensitive material 5 and abuts against the transparent plate 35a may be changed, for example, the photosensitive material may be adapted to photosensitive materials of different materials, and the adjustment is convenient. In addition, the light-transmitting member 30 of the present invention may be a light-transmitting release film, for example, a semi-permeable film having oxygen permeability or a light-transmitting plate. The schematic of fig. 4a and 4d also includes a feed inlet and a discharge outlet arranged adjacent to and on opposite sides of the light-transmitting member (30), the feed inlet and the discharge outlet being also located on opposite sides of and in communication with the forming chamber of the forming chamber when the forming chamber is in the printing station, the feed inlet being connected to the first pumping means 41, the discharge outlet being in communication with the feed or conduit 42 of the first pumping means 41 or the light-sensitive hopper 49 via a discharge conduit 43, the discharge conduit 43 also being provided with a heat sink 73 for dissipating heat from the light-sensitive material. Fig. 4a shows that an installation seat 28 may be further disposed between the cylinder liner 2 and the light-transmitting member 30 (a release film 33), a second sealing ring 21-2 may be disposed between the release film 33 and the installation seat 28 to form a seal, and a first sealing ring 21-1 may be disposed between the cylinder liner 2 and the installation seat 28 to form a seal. The mount 28 may mount and fix the translucent member 30 to the frame 91, and the mount 28 may also be a part of the frame 91, that is, the frame 91 may be partially disposed between the translucent member 30 and the cylinder liner 2 as the mount 28. A pipeline may also be disposed in the mounting seat 28, so that the photosensitive material pumped by the first pumping device 41 may enter the molding cavity through the mounting seat 28, the photosensitive material 51 in the molding cavity may also flow out of the molding cavity through another pipeline in the mounting seat 28 via an elbow 95, the elbow 95 higher than the photosensitive material may keep the photosensitive material in the molding cavity in a full state, and the upper elbow 95 may be disposed on the material discharge pipe 43 or on the material feeding pipeline or the pipeline 42 communicated with the material inlet. For example, the pumping device may pump the photosensitive material into the molding cavity through the inlet at the left side of the molding cavity, and the photosensitive material may flow out through the outlet at the right side, for example, the photosensitive material may flow back into the photosensitive material tank 49 or the inlet of the first pumping device 41 after being dissipated heat by the heat sink 73. Therefore, the heat dissipation of the photosensitive material 5 and the light-transmitting piece 30 can be realized, and the printing stability is improved.

Example 4

Fig. 8a to 8c illustrate another embodiment, and the forming chamber 40 further includes a frame 91a on the basis of the above embodiments, the cylinder liner 2 is fixedly connected to the frame 91a, and a third driving mechanism 15c is further included to drive the third platform connecting rod 11 c. The third platform link 11c is fixed to the forming platform 1 and may further include wheels 97, so that the entire forming carriage 40 can be pushed, and the forming carriage 40 can be replaced conveniently, for example, to the printing station 10 or from the printing station 10 to the photosensitive material recycling station 20. The first guiding and positioning mechanism 78 can be used for guiding and positioning, the connector 77 can be used for transmitting the power and control signals of the printing station 10 to the third driving mechanism 15c, the connector 77 can also be used for transmitting the signals of the displacement sensor 16 to the printing station 10, and the displacement sensor 16 can be used for detecting the displacement or position information of the forming platform 1. A quick coupling 46 may be further included to allow quick communication between the molding cavity and the first pumping device 41, and another quick coupling and a pipe connection heat sink 73 may be further provided to allow heat dissipation using the flow of the photosensitive resin.

After printing is completed, the forming carriage 40 can be pushed out of the printing station 10, the quick connector 46 is disconnected, the connector 77 is disconnected, the first guiding and positioning mechanism 78 is disconnected, and then the forming carriage 40 is pushed to the photosensitive material recycling station 20, as shown in fig. 8b, the photosensitive material recycling station 20 can still be guided and positioned by the corresponding second guiding and positioning mechanism 78b, the second connector 77b is connected and communicated with the quick connector 46b, uncured photosensitive resin can be pumped into the photosensitive material box 49 by using the second pumping device 41v at the photosensitive material recycling station 20, and if the light-transmitting member 30 is not connected with the forming carriage 40, the uncured photosensitive resin can be pumped back into the photosensitive material box by using the third driving mechanism 15c to drive the forming platform 1 to move upwards in a manner similar to 6. If the light-transmitting member 30 is engaged with the forming carriage 40, the light-transmitting member 30 is opened, the third driving mechanism 15c drives the forming platform to move upwards until the solidified mould 51 completely exposes the cylinder liner 2, so that the solidified mould can be conveniently taken out, and then the forming carriage 40 can be used for printing at the next printing station 10, for example, the forming carriage 40 shown in fig. 8c is pushed to the printing station 10, is guided and positioned by the guiding mechanism 78, and realizes that the connector 77 is connected and communicated with the quick connector 46 to prepare for starting printing of the next model.

The light-transmitting part may further include a light-permeable release part, the release part is a release film 33 or a release plate 31, when the forming carriage 40 is located in the printing station 10, the release part is switched between a printing position and a peeling position by controlling the pressure of the photosensitive material (5) in the forming chamber, when the release part is located in the printing position, the release part is located in a preset position for light curing and is in a flat structure, and a part of the release part, which is in contact with the curing model 51, moves in a direction away from the curing model 51 and peels off the curing model 51 by increasing the pressure of the photosensitive material 5, so that the part is located in the peeling position. The specific process is shown in fig. 10a-10d and fig. 11a-11 c.

Fig. 10a to 10d schematically show an explanation of a printing process using this light-transmitting member structure. The pressure P1 of the photosensitive material 5 is printing pressure, the light beam 39 emitted by the light source 37 selectively irradiates the photosensitive material 5 in the molding cavity through the transparent plate 35 and the release film 33 in sequence to form a curing model 51, as shown in fig. 10a, the pressure of the photosensitive material 5 is increased, for example, to P2, the part of the release film 33 moving towards the transparent plate 35 is attached to the transparent plate 35, a crack is formed between the release film 33 and the curing model 51, as shown in fig. 10b, the release film 33 is completely separated from the curing model 51 to realize release, as shown in fig. 10c, the release film 33 is in a release working position, the pressure of the photosensitive material 5 is reduced to the printing pressure P1, the release film 33 is restored to a flat state by its own elasticity, of course, a medium, such as pressurized air or transparent liquid, may be provided above the release film 33, i.e., in a gap between the release film 33 and the transparent plate 35 to accelerate the return of the release, the pressure intensity of the photosensitive material 5 in the forming cavity can also be balanced, as shown in fig. 10d, the driving mechanism 15 can drive the forming platform 1 to move downwards along the guide rail 69 to a preset position for printing the next layer, the release film 33 and the curing model 51 realize the printing work position of the next layer, then the light beam 39 illuminates according to the layer pattern of the next layer, the next layer is printed, and the printing of the curing model 51 is repeatedly realized. Fig. 10b and 10c also show that the first pumping device 41 of the material source 4 can adopt a plunger pump, the photosensitive material 5 is rapidly injected into the molding cavity by the first pumping device 41, the pressure of the photosensitive material is increased, meanwhile, the photosensitive material flows out through the elbow 95 to drive the photosensitive material close to the attachment of the release film 33 to flow and replace, the heat in the molding cavity can be taken away, and the flowing photosensitive material can be cooled by the radiator 73 and then returns to the material box 49 or the input end of the material source 4. So can realize the effective heat dissipation to photosensitive material from the in-process of type, do benefit to stability, precision and the speed that promotes the printing. The height of the elbow 95 determines the printing pressure of the photosensitive material in the molding chamber during the light irradiation process. Of course, a pressure reducing valve or an automatic valve can be used to replace the elbow 95 to replace the photosensitive material during the releasing process and control the pressure of the photosensitive material. The elbow 95 is communicated with the molding cavity and can be communicated with the material box 49 through a valve, when the valve is closed, the material source 4 can establish higher pressure in the molding cavity, the release of the light-transmitting piece and the curing model is quickly realized, and the continuous printing process can be favorably promoted. The bend 95 also facilitates venting of air from the mold cavity at the beginning of printing because air tends to collect at the highest point, i.e., the bend 95, and then is carried away by the photosensitive material 5 flowing along the conduit to flush it away.

In fig. 11a to 11c, the light-transmitting member 30 includes a release plate 31, the release plate 31 is limited by a support assembly including a support limiting member 28 and an elastic member 22, and as shown in fig. 11a, a frame 91 may be integrated with the cylinder liner 2, so that the release plate 31 abuts against the upper end of the cylinder liner 2, and a sealing ring 21b may be disposed therebetween to promote sealing. The lower end of the frame 91 can be attached to the upper end of the cylinder sleeve 2, and a sealing ring 21a can be arranged between the lower end of the frame and the upper end of the cylinder sleeve to improve the sealing effect. Fig. 11a to 11c illustrate the process of peeling off the release plate 31 from the curing mold 51, the supporting and limiting member 28 includes a limiting end and a connecting rod, one end of the connecting rod is fixedly connected to the frame 91 or the upper end of the cylinder sleeve 2, the other end of the connecting rod is fixedly connected to the limiting end, and the elastic member 22 (such as a spring) is sleeved on the connecting rod and is disposed between the limiting end of the supporting and limiting member 28 and the release plate 31. During printing, the photosensitive material 5 in the molding cavity is at a printing pressure P1, as shown in fig. 11a, the light beam 39 irradiates the photosensitive material 5 in the molding cavity through the release plate 31 to form a cured mold 51, then the material source 4 (e.g., the first pumping device and the photosensitive material box) controls the pressure rise of the photosensitive material 5, for example, to P2, the release plate 31 is pushed away from the cured mold 51 by the photosensitive material 5 to be peeled off, for example, the elastic member 22b on one side can be made to have a smaller elastic action than the elastic member 22a on the other side, the release plate 31 first compresses the elastic member 22b to be peeled off from the cured mold 51 in an inclined manner, and the peeling force is reduced, as shown in fig. 11 b. Then, the pressure of the photosensitive material 51 is continuously increased, the elastic element 22a is also compressed, as shown in fig. 11c, the release plate 3 is pushed away from the curing mold 51, the photosensitive material is filled in the gap, then the material source 4 reduces the pressure of the photosensitive material 5 to the printing pressure P1, and meanwhile, the forming platform 1 can drive the curing mold 51 to move downwards to the printing position of the next layer, so that the next layer of light curing can be started, and the process is repeated.

Example 5

Fig. 9 illustrates a multi-station in-line embodiment, wherein a plurality of

printing stations

10a, 10b, and 10c are arranged and share the same photosensitive material recycling station 20, and the

printing stations

10a, 10b, and 10c are connected to the photosensitive material recycling station 20 via a conduit 42 (not shown). And a discharge conveyor line 71 and a return conveyor line 72 (such as conveyor belts or conveyor rollers) are provided on the discharge side and the input side of the printing station array, respectively, and after printing is completed at each printing station, the molding carriage 40 loaded with the cured pattern is pushed from the discharge side to the discharge conveyor line 71 and conveyed to the photosensitive material recycling station 20 via the discharge conveyor line 71, the photosensitive material recycling station 20 discharges and returns the uncured photosensitive resin to the photosensitive hopper and takes out the cured pattern, and then the empty molding carriage 40 is conveyed to the return conveyor line 72 to a position on the input side at the corresponding printing station by the return conveyor line 72, for example, the printing stations 10a and 10c are shown in the figure as printing being in printing, the molding carriage 40-1 of the printing station 10b is moved from the discharge side and conveyed to the discharge conveyor line 71 after completion of printing, and the empty molding carriage 40-3 is conveyed to the input side of the printing station 10b by the return conveyor line 72, being ready to be pushed into the printing station 10b by the input side of the printing station 10b, it is also possible to have an empty forming carriage waiting in advance at the input side of the printing station just before printing is completed, as the forming carriage 40-2 in the figure waits at the input side of the printing station 10 a. By respectively arranging the output transmission line 71 and the loop transmission line 72 on two sides of the arrangement of the printing stations, the interference between the output molding box provided with the curing model and the returned empty molding box transmission path is avoided, the transmission and replacement speed of the molding box 40 can be accelerated, the production efficiency of a production line is improved, and the management and the maintenance of the production line are facilitated. In addition, the light-sensitive material recycling station 20 is arranged in a single isolation area 200, so that centralized processing of the forming compartment is facilitated, a cleaning station 75 can be arranged in the isolation area 200 to clean the taken-out curing model, and a secondary curing station 76 can be arranged to further illuminate or heat the curing model to improve the strength or other properties of the model, so that the final curing model 51 is produced. Of course, the conveyor line 74 may be disposed in the isolation area 200 to facilitate the conveyance of the curing mold taken out from the photosensitive material recycling station 20 to the cleaning station 75 and to the secondary curing station 76, thereby improving the production efficiency. The production line arrangement scheme is favorable for realizing production automation, such as conveying the forming carriage by using a conveyor belt, automatically replacing the printing station with a new forming carriage, and automatically releasing uncured photosensitive resin and conveying the taken-out cured model to the cleaning station by using the photosensitive material recycling station. Therefore, the whole process of contacting with the resin can be completely automated, and is free of human participation and more environment-friendly.

The description uses directional terms such as "above," "below," "left," "right," etc., for convenience in description based on the specific drawings, and not for limitation of the invention. In practical applications, the actual upper or lower position may differ from the figure due to the spatial variation of the structure as a whole. But such variations are intended to be within the scope of the invention.

Claims

1. A distributed photocuring three-dimensional printing system is characterized in that: the forming device comprises a photosensitive material recycling station (20), at least one printing station (10) and at least one forming box (40), wherein the forming box (40) comprises a forming platform (1) and a cylinder sleeve (2), the forming platform (1) is arranged inside the cylinder sleeve (2) in a manner of moving axially along the cylinder sleeve (2) and is sealed with the cylinder sleeve (2), the printing station (10) comprises a light source (37), a light-transmitting piece (30) and a first pumping device (41), the photosensitive material recycling station (20) comprises a photosensitive material box (49), the first pumping device (41) is connected with the photosensitive material box (49) through a pipeline (42), when the forming box (40) performs photocuring printing in the printing station (10), a sealed forming cavity is formed by the cylinder sleeve (2), the forming platform (1) and the light-transmitting piece (30), and the photosensitive material (5) is provided for the forming cavity inside the cylinder sleeve (2) through the first pumping device (41) And emitting a light beam (39) with a controllable printing layer pattern shape through the light transmitting piece (30) by the light source (37) to irradiate the photosensitive material (5) to form a curing model (51) on the forming platform (1), after printing is completed, the forming chamber (40) is sent to the photosensitive material recycling station (20), the photosensitive material (5) which is not cured is returned to the photosensitive material box (49), the curing model (51) is taken out from the forming chamber (40), and the printing station (10) is installed in the forming chamber for photocuring printing.

2. The distributed photocuring three-dimensional printing system of claim 1, wherein: when the forming chamber (40) is positioned at the printing station (10), the forming cavity inside the cylinder sleeve (2) is connected with a first pumping device (41) through a quick connector.

3. The distributed photocuring three-dimensional printing system of claim 1, wherein: the photosensitive material recycling station (20) further comprises a second pumping device (41V), when the forming chamber (40) is located in the photosensitive material recycling station (20), the forming cavity in the cylinder sleeve (2) is communicated with the second pumping device (41V) through a quick connector, and the photosensitive material (5) which is not solidified is sent back to the photosensitive material box (49) through the second pumping device (41V).

4. The distributed photocuring three-dimensional printing system of claim 1, wherein: the light-transmitting piece (30) comprises a light-transmitting release piece, the release piece is a release film (33) or a release plate (31), when the forming chamber (40) is located in the printing station (10), the release piece is switched between a printing position and a peeling position by controlling the pressure of the photosensitive material (5) in the forming chamber, when the release piece is located in the printing position, the release piece is located at a preset position and is in a flat structure, and the pressure of the photosensitive material (5) is increased, so that the contact part of the release piece and the curing model (51) moves towards the direction away from the curing model (51) to be peeled from the curing model (51) and is located at the peeling position.

5. The distributed photocuring three-dimensional printing system of claim 4, wherein: when the release piece is a release film (33), the light transmission piece (30) further comprises a light transmission plate with a light transmission area in the middle, the light transmission plate is arranged on the other side, opposite to the curing model (51), of the release film (33), a gap is formed between the light transmission plate and the release film (33), and when the pressure of the photosensitive material is increased to enable the release film (33) to protrude and deform in the direction towards the light transmission plate, the light transmission plate limits the maximum protrusion of the release film (33); when the type piece is from type board (31), light-transmitting piece (30) still include supporting component, supporting component is including supporting locating part and elastic component, supports including spacing end on the locating part, when photosensitive material pressure increases and makes from type board (31) the direction of light-transmitting board remove, spacing end carries on spacingly to the displacement from type board (31).

6. The distributed photocuring three-dimensional printing system of claim 1 or 5, wherein: the printing station further comprises a feeding hole and a discharging hole which are arranged close to the light-transmitting piece (30) and on two opposite sides of the light-transmitting piece (30), when the forming chamber is located in the printing station, the feeding hole and the discharging hole are communicated with the forming cavity of the forming chamber, the feeding hole is connected to a first pumping device (41), the discharging hole is connected with the first pumping device (41) or a pipeline (42) or a photosensitive material box (49) through a discharging pipe (43), and a radiator (73) is arranged on the discharging pipe (43).

7. The distributed photocuring three-dimensional printing system of claim 1, wherein: the printing station (10) further comprises a support, a supporting and pressing mechanism and a forming platform driving mechanism, the light-transmitting piece (30) is installed on the support, the forming chamber (40) is placed on the supporting and pressing mechanism when being located in the printing station (10), the cylinder sleeve (2) is pressed through the supporting and pressing mechanism to enable the cylinder sleeve (2) and the light-transmitting piece (30) to be in direct or indirect sealing fit, and the forming platform (1) is driven to move axially along the cylinder sleeve (2) through the forming platform driving mechanism.

8. The distributed photocuring three-dimensional printing system of claim 1, wherein: photosensitive material recycle bin (20) are including support, support hold-down mechanism and shaping platform actuating mechanism, install sealing member (21 b) on the support, it loopbacks passageway (44) and photosensitive workbin (49) intercommunication to have photosensitive material on the support, place on supporting hold-down mechanism when shaping railway carriage or compartment (40) are located photosensitive material recycle bin (20), through support hold-down mechanism and compress tightly cylinder liner (2) for form sealed cooperation and the shaping chamber of cylinder liner (2) and photosensitive material loopbacks passageway (44) and be linked together between cylinder liner (2) and sealing member (21 b), shaping platform (1) is through the axial displacement of shaping platform actuating mechanism drive along cylinder liner (2).

9. The distributed photocuring three-dimensional printing system of claim 7 or 8, wherein: the forming platform driving mechanism comprises a guide rail, a platform connecting rod and a driving mechanism, the guide rail is arranged along the axial direction of the cylinder sleeve (2), the platform connecting rod is slidably arranged on the guide rail, and the platform connecting rod is driven by the driving mechanism to slide along the guide rail and drive the forming platform (1) to axially move along the cylinder sleeve (2).

10. The distributed photocuring three-dimensional printing system of claim 9, wherein: the supporting and pressing mechanism comprises a supporting platform and a supporting spring, the supporting platform is slidably mounted on the guide rail, the forming chamber (40) is placed on the supporting platform, the other side, opposite to the forming chamber (40), of the supporting platform is supported by the supporting spring to press the cylinder sleeve (2), and when the supporting platform is driven by the platform connecting rod to slide along the guide rail and compress the supporting spring, the cylinder sleeve (2) is released from pressing.

11. The distributed photocuring three-dimensional printing system of claim 1, wherein: and a stop block (2 a) for preventing the forming platform (1) from slipping is arranged at the bottom of the cylinder sleeve (2).

12. The distributed photocuring three-dimensional printing system of claim 1, wherein: an output conveying line (71) and a loop conveying line (72) for conveying the forming chamber (40) are arranged between the printing station (10) and the photosensitive material recycling station (20); the output conveyor line (71) is on the output side of the printing station (10), the loop conveyor line (72) is on the input side of the printing station (10), the printed former compartment is moved out of the output side to the output conveyor line (71), and the empty former compartment is moved from the loop conveyor line (72) on the input side to the printing station (10).

13. A distributed photocuring three-dimensional printing system is characterized in that: the printing device comprises at least one forming chamber (40), a photosensitive material recycling station (20) and at least one printing station (10), wherein the forming chamber (40) comprises a forming platform (1), a cylinder sleeve (2) and a light-transmitting piece (30), the forming platform (1) can be arranged inside the cylinder sleeve (2) in a manner of moving axially along the cylinder sleeve (2) and is kept sealed with the cylinder sleeve (2), the printing station (10) comprises a light source (37) and a first pumping device (41), the photosensitive material recycling station (20) comprises a photosensitive material box (49), the first pumping device (41) is connected with the photosensitive material box (49) through a pipeline (42), when the forming chamber (40) performs photocuring printing in the printing station (10), a sealed forming cavity is formed by the cylinder sleeve (2), the forming platform (1) and the light-transmitting piece (30), and the photosensitive material (5) is provided for the forming cavity inside the cylinder sleeve (2) through the first pumping device (41), The light source (37) emits light beams (39) with controllable printing layer pattern shapes to irradiate the photosensitive material (5) to form and solidify the model (51) on the forming platform (1) through the light transmission piece (30), the forming chamber (40) is sent to the photosensitive material recycling station (20) after printing is completed, the photosensitive material (5) which is not solidified is returned to the photosensitive material box (49) and the solidified model (51) is taken out of the forming chamber (40), and the printing station (10) is installed in the forming chamber for photocuring printing.

14. The distributed photocuring three-dimensional printing system of claim 13, wherein: the forming carriage (40) further comprises a frame (91 a), a platform connecting rod and a driving mechanism, the cylinder sleeve (2) is installed on the frame (91 a), and the platform connecting rod is respectively connected with the forming platform (1) and the driving mechanism and drives the forming platform (1) to move along the axial direction of the cylinder sleeve (2) through the driving mechanism; guiding and positioning mechanisms matched with each other are arranged between the frame (91 a) and the printing station (10) and/or the photosensitive material recovery station (20); connectors for electric transmission are arranged between the frame (91 a) and the printing station (10) and/or the photosensitive material recycling station (20).

15. The distributed photocuring three-dimensional printing system of claim 1 or 14, wherein: the photosensitive material recycling station (20) is arranged in an isolation area (200) separated from the printing station (10), and a cleaning station (75) and/or a secondary reinforcing station (76) are/is arranged in the isolation area (200).