DLP equipment with Z-axis release structure and release method thereof

Abstract

The invention discloses DLP equipment with a Z-axis release structure and a release method of the DLP equipment. The DLP equipment comprises the Z-axis release structure, and the Z-axis release structure comprises a driving assembly, a rotating assembly and a vertical guide assembly arranged on the rotating assembly; the end, close to the lifting motor, of the printing assembly is matched with the vertical guiding assembly, the driving assembly drives the rotating assembly to rotate and drives the vertical guiding assembly to rotate around the center shaft of the rotating assembly, and the vertical guiding assembly drives the printing assembly to rotate around the center shaft of the lifting motor. According to the Z-axis release structure, the driving assembly is used for driving the rotating assembly to rotate, the vertical guiding assembly arranged on the rotating assembly is further driven to rotate around the center axis of the rotating assembly, and therefore the printing assembly rotates around the center axis of the lifting motor along with the vertical guiding assembly; the release force in the vertical direction generated during upward pulling type forming is converted into the transverse release force from the angle of a mechanical structure.

Description

Technical Field

[0001] The present invention relates to the technical field of additive manufacturing, and in particular to a DLP device with a Z-axis release structure and a release method thereof. Background Art

[0002] Existing DLP equipment is divided into desktop equipment and large-scale industrial equipment. In large-scale industrial equipment, the light source is above, and the molding sinks below the liquid surface. No release film is required for the liquid surface. Most commonly used desktop equipment uses the light source at the bottom, and performs upward pull molding through windows and release films.

[0003] The existing pull-up molding equipment is prone to poor precision and surface finish of printed products due to the release force. In order to reduce the release force to obtain higher fineness and improve molding efficiency, the main solution is to replace the release film to reduce the release force.

[0004] Since the release film is a consumable, reducing the release force by replacing the release film will increase the model printing cost. At the same time, the frequent replacement of the release film will also affect the printing precision and printing efficiency. Therefore, it is necessary to design a release structure that can reduce the release force from a mechanical perspective. When using the same release film, the release structure can greatly improve the surface precision and printing efficiency of the printed product. Summary of the invention

[0005] In view of the problems in the prior art that the upper-pull forming equipment is affected by the release force, resulting in low surface fineness and printing efficiency of the printed product, and the frequent replacement of the release film to reduce the release force leads to excessively high printing costs, the present invention proposes a DLP device with a Z-axis release structure and a release method thereof, which are used to solve the above technical problems.

[0006] According to the first aspect of the present application, a DLP device with a Z-axis release structure is proposed, including a device body and a material trough and a lifting printing mechanism detachably mounted on a reference plate on the upper part of the device body, the lifting printing mechanism including a printing component and a lifting motor driving the printing component to lift and lower; it also includes a Z-axis release structure, the Z-axis release structure including a driving component, a rotating component, and a vertical guiding component arranged on the rotating component; one end of the printing component close to the lifting motor cooperates with the vertical guiding component, the driving component drives the rotating component to rotate, and drives the vertical guiding component to rotate around the central axis of the rotating component, and the vertical guiding component drives the printing component to rotate around the central axis of the lifting motor.

[0007] By adopting the above technical solution, the driving component is used to drive the rotating component to rotate, and further drive the vertical guide component arranged on the rotating component to rotate around the central axis of the rotating component, so that the printing component follows the vertical guide component to rotate with the central axis of the lifting motor, and through the Z-axis release structure, the vertical release force generated during the upper pull-type forming is converted into a lateral release force from the perspective of the mechanical structure. Without replacing the release film, the release force can be reduced by 30-40%, thereby greatly improving the surface fineness and printing efficiency of the printed product.

[0008] In some specific embodiments, the printing assembly includes a printing platform disposed above the material trough, the printing platform is detachably matched with one end of a platform extension plate, the other end of the platform extension plate is matched with a fixed plate, and the fixed plate is rotatably matched with a lifting motor.

[0009] By adopting the above technical solution and utilizing a detachable printing platform, platform extension plate and fixed plate, the printing component has a modular structure, which is convenient for assembly and disassembly, and improves the convenience of maintenance and replacement of parts. The printing component rotates with the lifting motor through the fixed plate to achieve the lifting and lowering of the printing component driven by the lifting motor.

[0010] In some specific embodiments, the lifting motor includes a power part and a screw part, the screw part vertically passes through the reference plate and the fixing plate upward, and the power part is fixed to the lower surface of the reference plate.

[0011] By adopting the above technical solution, by fixing the power unit on the lower surface of the reference plate, the space of the equipment is effectively utilized, making the overall structure of the equipment more compact. At the same time, a screw motor arranged vertically upward is used to ensure the verticality and accuracy of the lifting movement, reduce printing errors caused by tilt or offset, thereby ensuring the uniformity and consistency of the printed layer.

[0012] In some specific embodiments, a screw nut passes through the screw rod portion, and the screw nut is fixed on a groove on the bottom surface of the fixing plate.

[0013] By adopting the above technical solution, the screw nut is used to cooperate with the screw part of the lifting motor, so that the lifting motor can drive the printing component to move up and down along the screw part with the help of the cooperation between the screw nut and the fixed plate.

[0014] In some specific embodiments, the vertical guide assembly includes a guide rail guard plate vertically arranged on the rotating assembly, a vertical guide rail is fixed to the inner side of the guide rail guard plate, and a side of the fixed plate away from the platform extension plate cooperates with a vertical slider of the vertical guide rail.

[0015] By adopting the above technical solution, the guide rail guard plate is vertically set on the rotating assembly, so that the vertical guide assembly as a whole can rotate with the rotating assembly, and the vertical slider is used to drive the fixed plate to move. At the same time, the fixed plate is passed through by the screw part of the lifting motor, so that the fixed plate only rotates around the central axis of the lifting motor, further driving the printing platform to rotate.

[0016] In some specific embodiments, a limit switch is further provided above the vertical guide rail, and a limit switch plate cooperating with the limit switch is installed on the top of the fixed plate.

[0017] By adopting the above technical solution, when the fixed plate moves to the highest point of the vertical guide rail with the vertical slider, the limit switch plate and the limit switch cooperate to prevent the printing component from over-travelling, thereby preventing accidents and improving the safety of equipment operation. At the same time, the upper limit position of the printing component can be accurately located.

[0018] In some specific embodiments, the rotating assembly includes a turntable and a rotating base respectively arranged above and below the reference plate. The upper surface of the reference plate is provided with a rotating groove adapted to the turntable, and a through hole is opened in the center of the rotating groove for the turntable to pass through and cooperate with the rotating base.

[0019] By adopting the above technical solution, the turntable can rotate smoothly in the rotating groove, reducing the shaking and unstable factors during the rotation process, improving the stability and accuracy of the turntable rotation, and using the through hole in the center of the rotating groove to accurately align the turntable with the rotating base. The cooperation between the two simplifies the structure of the rotating assembly, making installation and maintenance easier. At the same time, this up and down design optimizes space utilization, and enables the equipment to achieve efficient rotation function in a limited space while maintaining the stability of the rotating assembly.

[0020] In some specific embodiments, the rotating base includes an inner ring and an outer ring, a rotating bearing is provided between the inner ring and the outer ring, and the inner ring and the outer ring cooperate with the turntable and the reference plate respectively.

[0021] By adopting the above technical solution, the rotary bearing is used to make the rotation of the turntable smoother, reducing energy loss and mechanical wear, which can significantly extend the service life of the rotating component and reduce the frequency of maintenance and replacement. High-quality rotary bearings can effectively reduce noise and vibration during rotation and improve the stability and quietness of equipment operation.

[0022] In some specific embodiments, the driving assembly includes a servo, a servo turntable and a swing rod. The servo is fixed to the lower surface of the reference plate, and the output end of the servo passes through the reference plate and cooperates with the servo turntable. The two ends of the swing rod are respectively rotationally connected to the rotating assembly and the servo turntable.

[0023] By adopting the above technical solution, the servo is used to provide precise angle control, and the swing rod is used to drive the rotating component to perform precise rotation. The servo has the characteristics of fast response. By working in coordination with the servo turntable and the swing rod, fast motion control can be achieved, the working efficiency of the equipment is improved, and the structural layout of the equipment is optimized.

[0024] According to a second aspect of the present application, a release method is proposed, using the above-mentioned DLP device with a Z-axis release structure, comprising:

[0025] S1: The device body projects the required image onto the bottom layer of the material tank and solidifies the resin liquid at the bottom layer of the material tank;

[0026] S2: After the curing is completed, the steering gear drives the steering gear turntable to rotate 90 degrees, and the steering gear turntable drives the swing rod to move. The swing rod applies force to the turntable, driving the turntable to rotate 15 degrees;

[0027] S3: The turntable drives the vertical guide assembly to rotate around the central axis of the turntable, thereby causing the printing assembly to rotate around the central axis of the turntable;

[0028] S4: The printing platform of the printing component peels off the printed layer solidified on the release film of the printing platform by means of the rotational release force generated by the rotation;

[0029] S5: The lifting motor drives the printing assembly to rise along the vertical guide assembly, so that the resin liquid at the bottom of the material tank fills to the middle and the liquid surface is leveled. The servo moves again to return to the initial position, driving the printing assembly to reset to the initial position, and then descends to the required height, and repeats steps S1-S4 until a complete three-dimensional model is formed.

[0030] By adopting the above technical scheme, whenever a layer of the printed model is cured, the servo can drive the servo turntable to rotate, and further link the turntable to rotate through the swing rod, so that the vertical guide component arranged on the turntable moves with the turntable. Due to the cooperation between the vertical guide component and the printing component, the printing component rotates around the central axis of the turntable and generates a rotational release force of a transverse circular motion. The release force peels off the printed layer solidified on the release film of the printing platform. After peeling, the lifting motor lifts the printing component, and the resin in the material tank fills the middle part and level the liquid surface. After the servo drives the printing component to reset, the lifting motor can drive the printing platform to descend and print the next layer of the model. Through this method, the transverse circular rotational release force is used to peel off the printed layer. Compared with the traditional pull-up release, the release force required for peeling the printed layer is greatly reduced, and the service life of the release film is also extended, and the cost of consumables is reduced.

[0031] Compared with the prior art, the beneficial effects of this application are:

[0032] The present application mainly solves the problem that the pull-up molding equipment in the prior art is affected by the release force, resulting in low surface fineness and printing efficiency of the printed product, and the frequent replacement of the release film reduces the release force, resulting in excessive printing costs. The present application proposes a DLP device with a Z-axis release structure and a release method thereof. The Z-axis release structure composed of a driving component, a rotating component, and a vertical guide component is used to transform the traditional pull-up release method into a horizontal rotation release, which greatly reduces the release force required for the release of the printed layer by about 30-40%. During the release, the rotating component is driven by the servo through the swing rod, and then the vertical guide component and the printing component are linked to rotate. The printed layer is peeled off from the release film under the action of the release force of the horizontal rotation, which solves the problem that the pull-up release requires a large release force and the loss of the release film is large from the perspective of the mechanical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate the embodiments and are used together with the description to explain the principles of the present invention. It will be easy to recognize other embodiments and many expected advantages of the embodiments because they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale with each other. The same reference numerals refer to corresponding similar parts.

[0034] Figure 1 is a schematic structural diagram of a DLP device according to an embodiment of the present invention;

[0035] Figure 2 is a schematic diagram of the installation of a lifting printing mechanism according to a specific embodiment of the present invention;

[0036] Figure 3 is a schematic diagram of a Z-axis release structure according to a specific embodiment of the present invention;

[0037] Figure 4 4 is a flow chart of a release method according to an embodiment of the present invention.

[0038] The meaning of the numbers in the figure:

[0039] Equipment body 01, reference plate 02, rotating groove 021, material trough 03, printing component 04, printing platform 041, platform extension plate 042, fixed plate 043, lifting motor 05, power unit 051, screw unit 052, screw nut 053, Z-axis release structure 06, driving component 07, servo 071, servo turntable 072, swing rod 073, rotating component 08, turntable 081, rotating base 082, inner ring 083, outer ring 084, rotating bearing 085, vertical guide component 09, guide rail guard plate 091, vertical guide rail 092, vertical slider 093, limit switch 094, limit switch plate 095, quartz glass 10. DETAILED DESCRIPTION

[0040] In the following detailed description, reference is made to the accompanying drawings, which form a part of the detailed description and are shown by illustrative specific embodiments in which the present invention can be put into practice. To this end, directional terms, such as "top", "bottom", "left", "right", "up", "down", etc., are used with reference to the orientation of the figures described. Because the parts of the embodiments can be positioned in several different orientations, directional terms are used for the purpose of illustration and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present invention. Therefore, the following detailed description should not be adopted in a limiting sense, and the scope of the present invention is defined by the appended claims.

[0041] According to the first aspect of the present application, a DLP device with a Z-axis release structure is proposed, including a device body 01 and a material trough 03 and a lifting printing mechanism detachably mounted on a reference plate 02 on the upper part of the device body 01, the lifting printing mechanism including a printing component 04 and a lifting motor 05 for driving the printing component 04 to lift and lower; it also includes a Z-axis release structure 06, the Z-axis release structure 06 including a driving component 07, a rotating component 08, and a vertical guide component 09 arranged on the rotating component 08; one end of the printing component 04 close to the lifting motor 05 cooperates with the vertical guide component 09, the driving component 07 drives the rotating component 08 to rotate, and drives the vertical guide component 09 to rotate around the central axis of the rotating component 08, and the vertical guide component 09 drives the printing component 04 to rotate around the central axis of the lifting motor 05.

[0042] Specifically, the driving component 07 is used to drive the rotating component 08 to rotate, which further drives the vertical guide component 09 arranged on the rotating component 08 to rotate around the central axis of the rotating component 08, so that the printing component 04 follows the vertical guide component 09 to rotate with the central axis of the lifting motor 05, and through the Z-axis release structure 06, the vertical release force generated during the upward pull-type molding is converted into a lateral release force from a mechanical structure perspective. Without replacing the release film, the release force can be reduced by 30-40%, thereby greatly improving the surface fineness and printing efficiency of the printed product.

[0043] Figure 2 FIG. 4 shows a schematic diagram of the installation of a lifting printing mechanism according to a specific embodiment of the present invention. Figure 1-2 As shown, the printing component 04 includes a printing platform 041 arranged above the material trough 03, the printing platform 041 is detachably matched with one end of the platform extension plate 042, the other end of the platform extension plate 042 is matched with the fixed plate 043, and the fixed plate 043 is rotatably matched with the lifting motor 05.

[0044] By utilizing the detachable printing platform 041, platform extension plate 042 and fixed plate 043, the printing component 04 has a modular structure, which is convenient for assembly and disassembly, and improves the convenience of maintenance and replacement of parts. The printing component rotates with the lifting motor 05 through the fixed plate 043, so that the lifting motor 05 drives the printing component 04 to rise and fall.

[0045] In a specific embodiment, the material slot 03 is installed on the reference plate 02 by means of pressing and bolting, and a quartz glass 10 for projecting a printed image is arranged at the center of the reference plate 02 corresponding to the material slot 03 .

[0046] In a specific embodiment, the lifting motor 05 includes a power unit 051 and a screw unit 052. The screw unit 052 vertically passes through the reference plate 02 and the fixed plate 043, and the power unit 051 is fixed to the lower surface of the reference plate 02. By fixing the power unit 051 to the lower surface of the reference plate 02, the space of the equipment is effectively utilized, and the overall structure of the equipment is made more compact. At the same time, a screw motor arranged vertically upward is used to ensure the verticality and accuracy of the lifting movement, reduce printing errors caused by tilt or offset, and thus ensure the uniformity and consistency of the printed layer.

[0047] Furthermore, a screw nut 053 passes through the screw portion 052, and the screw nut 053 is fixed on the groove on the bottom surface of the fixed plate 043. The screw nut 053 cooperates with the screw portion 052 of the lifting motor 05, so that the lifting motor 05 can drive the printing component 04 to move up and down along the screw portion 052 with the help of the cooperation between the screw nut 053 and the fixed plate 043.

[0048] Figure 3 FIG. 4 shows a schematic diagram of a Z-axis release structure according to a specific embodiment of the present invention. Figure 1-3 As shown, the vertical guide assembly 09 includes a guide rail guard plate 091 vertically arranged on the rotating assembly 08, a vertical guide rail 092 is fixed on the inner side of the guide rail guard plate 091, and a side of the fixed plate 043 away from the platform extension plate 042 cooperates with the vertical slider 093 of the vertical guide rail 092.

[0049] Specifically, a threaded hole is provided at the bottom of the guide rail guard plate 091, and is fixed to the upper surface of the rotating assembly 08 by means of bolts. By vertically arranging the guide rail guard plate 091 on the rotating assembly 08, the vertical guide assembly 09 as a whole can rotate with the rotating assembly 08, and the vertical slider 093 is used to drive the fixed plate 043 to move. At the same time, the fixed plate 043 is passed through by the screw part 052 of the lifting motor 05, so that the fixed plate 043 only rotates around the central axis of the lifting motor 05, thereby further driving the printing platform 041 to rotate.

[0050] In a specific embodiment, a limit switch 094 is further provided above the vertical guide rail 092, and a limit switch plate 095 cooperating with the limit switch 094 is installed on the top of the fixed plate 043. When the fixed plate 043 moves to the highest point of the vertical guide rail 092 along with the vertical slider, the limit switch plate 095 cooperates with the limit switch 094 to prevent the printing component 04 from over-travelling during its ascent, thereby preventing accidents and improving the safety of equipment operation. At the same time, the upper limit position of the printing component 04 can also be accurately located.

[0051] In a specific embodiment, the rotating component 08 includes a turntable 081 and a rotating base 082, which are respectively arranged above and below the reference plate 02. The upper surface of the reference plate 02 is provided with a rotating groove 021 that is adapted to the shape and size of the turntable 081, and a through hole is opened in the center of the rotating groove 021 for the turntable 081 to pass through and cooperate with the rotating base 082. The turntable 081 can rotate smoothly in the rotating groove 021, reducing shaking and unstable factors during the rotation process, and improving the stability and accuracy of the rotation of the turntable 081. The turntable 081 and the rotating base 082 are precisely aligned with each other by means of the through hole in the center of the rotating groove 021. The cooperation between the two simplifies the structure of the rotating component, making installation and maintenance easier. At the same time, this upper and lower design optimizes space utilization, and enables the equipment to achieve efficient rotation function in a limited space while maintaining the stability of the rotating component 08.

[0052] Furthermore, the rotating base 082 includes an inner ring 083 and an outer ring 084, a rotating bearing 085 is provided between the inner ring 083 and the outer ring 084, and the inner ring 083 and the outer ring 084 cooperate with the turntable 081 and the reference plate 02 respectively. Specifically, the middle part of the turntable 081 passes through the through hole of the rotating groove 021 and cooperates with the inner ring 083 by bolts, and the outer ring 084 is fixed to the lower surface of the reference plate 02 by bolts. The inner ring 083 can rotate in the outer ring 084 by relying on the rotating bearing 085. The rotating bearing 085 makes the rotation of the turntable 081 smoother, reduces energy loss and mechanical wear, can significantly extend the service life of the rotating component 08, and reduce the frequency of maintenance and replacement. The high-quality rotating bearing 085 can effectively reduce noise and vibration during rotation, and improve the stability and quietness of equipment operation.

[0053] In some specific embodiments, the driving component 07 includes a servo 071, a servo turntable 072 and a swing rod 073. The servo 071 is fixed on the lower surface of the reference plate 02, and the output end of the servo 071 passes through the reference plate 02 and cooperates with the servo turntable 072. The two ends of the swing rod 073 are respectively rotatably connected to the rotating component 08 and the servo turntable 072. Specifically, the two ends of the swing rod 073 are respectively rotatably connected to the eccentric positions of the upper surfaces of the turntable 081 and the servo turntable 072. The servo 071 is used to provide precise angle control, and the swing rod 073 is used to drive the rotating component 08 to perform precise rotation. The servo 071 has the characteristic of fast response. By working in coordination with the servo turntable 072 and the swing rod 073, rapid motion control can be achieved, the working efficiency of the equipment is improved, and the structural layout of the equipment is optimized.

[0054] Furthermore, the diameter of the servo turntable 072 is much smaller than the diameter of the turntable 081. The servo turntable 072 is controlled by the servo 071 to rotate 90 degrees, and the turntable 081 is driven to rotate 15 degrees by the swing rod 073. The vertical guide assembly 09 rotates with the turntable 081. Due to the cooperation between the vertical slider 093 and the fixed plate 043, the end of the printing assembly 04 close to the fixed plate 043 rotates with the vertical guide assembly 09. At the same time, since the fixed plate 043 is passed through by the lifting motor 05, the printing assembly 04 as a whole rotates around the central axis of the lifting motor 05, thereby causing the printing platform 041 to generate a horizontal rotation release force, which makes it easier to peel off the printed layer of the printed model from the release film of the printing platform 041.

[0055] According to a second aspect of the present application, a release method is proposed, using the above-mentioned DLP device with a Z-axis release structure, Figure 4 A flow chart of a release method according to an embodiment of the present invention is shown. As shown in the figure, the release method comprises:

[0056] S1: The device body projects the required image onto the bottom layer of the material tank and solidifies the resin liquid at the bottom layer of the material tank;

[0057] S2: After the curing is completed, the steering gear drives the steering gear turntable to rotate 90 degrees, and the steering gear turntable drives the swing rod to move. The swing rod applies force to the turntable, driving the turntable to rotate 15 degrees;

[0058] S3: The turntable drives the vertical guide assembly to rotate around the central axis of the turntable, thereby causing the printing assembly to rotate around the central axis of the turntable;

[0059] S4: The printing platform of the printing component peels off the printed layer solidified on the release film of the printing platform by means of the rotational release force generated by the rotation;

[0060] S5: The lifting motor drives the printing assembly to rise along the vertical guide assembly, so that the resin liquid at the bottom of the material tank fills to the middle and the liquid surface is leveled. The servo moves again to return to the initial position, driving the printing assembly to reset to the initial position, and then descends to the required height, and repeats steps S1-S4 until a complete three-dimensional model is formed.

[0061] By adopting the above method, whenever a layer of the printed model is cured, the servo can drive the servo turntable to rotate, and further link the turntable to rotate through the swing rod, so that the vertical guide component arranged on the turntable moves with the turntable. Due to the cooperation between the vertical guide component and the printing component, the printing component rotates around the central axis of the turntable and generates a rotational release force of a transverse circular motion. The release force peels off the printed layer solidified on the release film of the printing platform. After peeling, the lifting motor lifts the printing component, and the resin in the material tank fills the middle part and level the liquid surface. After the servo drives the printing component to reset, the lifting motor can drive the printing platform to descend and print the next layer of the model. By using this method, the transverse circular rotational release force is used to peel off the printed layer. Compared with the traditional pull-up release, the release force required for peeling the printed layer is greatly reduced, and the service life of the release film is also extended, and the cost of consumables is reduced.

[0062] The present application mainly solves the problems in the prior art that the pull-up molding equipment is affected by the release force, resulting in low surface fineness and printing efficiency of the printed product, and the frequent replacement of the release film reduces the release force, resulting in excessive printing costs. The present application proposes a DLP device with a Z-axis release structure and a release method thereof, which uses a Z-axis release structure 06 composed of a driving component 07, a rotating component 08, and a vertical guide component 09 to transform the traditional pull-up release method into a horizontal rotation release, greatly reducing the release force required for the release of the printed layer by about 30-40%. During the release, the rotating component 08 is driven by the servo 071 through the swing rod 073, and then the vertical guide component 09 and the printing component 04 are rotated. The printed layer is peeled off from the release film under the action of the release force of the horizontal rotation, which solves the problem that the pull-up release requires a large release force and the loss of the release film is large from the perspective of the mechanical structure.

[0063] Obviously, those skilled in the art can make various modifications and changes to the embodiments of the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and changes are within the scope of the claims of the present invention and their equivalents, the present invention is also intended to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are recorded in mutually different dependent claims does not indicate that the combination of these measures cannot be used to profit. Any reference numerals in the claims should not be considered to limit the scope.

Claims

1. A DLP device with a Z-axis release structure, comprising a device body, a material trough and a lifting printing mechanism detachably mounted on a reference plate on the upper part of the device body, characterized in that: The lifting printing mechanism includes a printing assembly and a lifting motor for driving the printing assembly to lift; and also includes a Z-axis release structure, wherein the Z-axis release structure includes a driving assembly, a rotating assembly, and a vertical guiding assembly arranged on the rotating assembly; One end of the printing component close to the lifting motor cooperates with the vertical guiding component, the driving component drives the rotating component to rotate, and drives the vertical guiding component to rotate around the central axis of the rotating component, and the vertical guiding component drives the printing component to rotate around the central axis of the lifting motor.

2. The DLP device with a Z-axis release structure according to claim 1, characterized in that: The printing assembly includes a printing platform arranged above the material trough, the printing platform is detachably matched with one end of a platform extension plate, the other end of the platform extension plate is matched with a fixed plate, and the fixed plate is rotatably matched with the lifting motor.

3. The DLP device with a Z-axis release structure according to claim 2, characterized in that: The lifting motor includes a power part and a screw part, the screw part vertically passes through the reference plate and the fixing plate upward, and the power part is fixed on the lower surface of the reference plate.

4. The DLP device with a Z-axis release structure according to claim 3, characterized in that: A screw nut passes through the screw rod part, and the screw nut is fixed on the groove on the bottom surface of the fixing plate.

5. The DLP device with a Z-axis release structure according to claim 2, characterized in that: The vertical guide assembly includes a guide rail guard plate vertically arranged on the rotating assembly, a vertical guide rail is fixed inside the guide rail guard plate, and a surface of the fixed plate away from the platform extension plate cooperates with a vertical slider of the vertical guide rail.

6. The DLP device with a Z-axis release structure according to claim 5, characterized in that: A limit switch is also arranged above the vertical guide rail, and a limit switch plate cooperating with the limit switch is installed on the top of the fixing plate.

7. The DLP device with a Z-axis release structure according to claim 1, characterized in that: The rotating assembly includes a turntable and a rotating base respectively arranged above and below the reference plate. The upper surface of the reference plate is provided with a rotating groove adapted to the turntable, and the center of the rotating groove is provided with a through hole for the turntable to pass through and cooperate with the rotating base.

8. The DLP device with a Z-axis release structure according to claim 7, characterized in that: The rotating base comprises an inner ring and an outer ring, a rotating bearing is arranged between the inner ring and the outer ring, and the inner ring and the outer ring are matched with the rotating disk and the reference plate respectively.

9. The DLP device with a Z-axis release structure according to claim 1, characterized in that: The driving assembly includes a servo, a servo turntable and a swing rod. The servo is fixed to the lower surface of the reference plate, and the output end of the servo passes through the reference plate and cooperates with the servo turntable. The two ends of the swing rod are respectively rotatably connected to the rotating assembly and the servo turntable.

10. A release method, using the DLP device with a Z-axis release structure as claimed in any one of claims 1 to 9, characterized in that: include: S1: The device body projects the required image onto the bottom layer of the material tank and solidifies the resin liquid at the bottom layer of the material tank; S2: After the curing is completed, the steering gear drives the steering gear turntable to rotate 90 degrees, and the steering gear turntable drives the swing rod to move. The swing rod applies a force to the turntable, driving the turntable to rotate 15 degrees; S3: the turntable drives the vertical guide assembly to rotate around the central axis of the turntable, thereby causing the printing assembly to rotate around the central axis of the turntable; S4: The printing platform of the printing component peels off the printed layer solidified on the release film of the printing platform by means of a rotational release force generated by the rotation; S5: The lifting motor drives the printing component to rise along the vertical guide component, so that the resin liquid at the bottom of the material tank fills the middle and levels the liquid surface. The servo moves back to the initial position again, driving the printing component to reset to the initial position, and then descends to the required height, and repeats steps S1-S4 until a complete three-dimensional model is formed.

Images