A tilted release device for a light-curing 3D printer

Abstract

The present invention discloses a tilting release device of a light-curing 3D printer, comprising a rotating middle plate and a tilting mechanism, wherein the rotating middle plate is fixedly connected to a material trough, and the other end of the rotating middle plate is movably connected to the tilting mechanism, the rotating middle plate is fixedly connected to the material trough, and the tilting mechanism drives the material trough to tilt up and down through the rotating middle plate; the tilting mechanism comprises a driving member, an eccentric wheel and a transmission assembly, wherein the eccentric wheel is fixedly connected to the output end of the driving member, one end of the transmission assembly is rotationally connected to the eccentric wheel, and the other end is fixedly connected to the rotating middle plate. The tilting release device of the light-curing 3D printer has the advantages of overcoming the adsorption force between the building plate and the screen, and improving the accuracy and geometric shape of the printed object.

Description

Technical Field

[0001] The present invention relates to the technical field of inclined mold release, and in particular to an inclined mold release device of a light-curing 3D printer. Background Art

[0002] The basic principle of light-curing 3D printing is to stack materials layer by layer to build the three-dimensional shape of the target part. First, the geometric shape of the target part is decomposed into a series of horizontal plane layers. Then, a beam of light with a specific wavelength is used to scan the liquid photosensitive resin in the material tank layer by layer. At each level, the area irradiated by the beam will solidify, while the area not affected by the beam remains in a liquid state. Through this layer-by-layer scanning and curing method, the complete shape of the target part is gradually built up. This method can make the material utilization efficiency close to 100%.

[0003] During the process of photocuring 3D printing, a gap of single-layer curing is left between the build plate and the printing platform. The vertical screw is used to move the build plate that has completed single-layer curing upward to separate the build plate from the printing platform; during the release process, the printing platform and the cured layer are separated on the entire surface at the same time. At this time, a large adhesion force will be generated between the layers, making separation difficult. In the process of overcoming the adsorption force between the build plate and the printing platform, especially when printing complex geometric shapes or large parts, this will affect the accuracy and geometry of the printed object.

[0004] Therefore, in view of the shortcomings of the prior art, a tilted release device for a light-curing 3D printer is provided. Summary of the invention

[0005] The present invention provides an inclined release device for a light-curing 3D printer, which aims to solve the problem of affecting the accuracy and geometric shape of a printed object in the process of overcoming the adsorption force between a building plate and a screen.

[0006] The present invention adopts the following technical solutions:

[0007] A tilting release device for a light-curing 3D printer, comprising a rotating middle plate and a tilting mechanism, wherein the rotating middle plate is fixedly connected to a material trough, the other end of the rotating middle plate is movably connected to the tilting mechanism, the rotating middle plate is fixedly connected to the material trough, and the tilting mechanism drives the material trough to tilt up and down through the rotating middle plate;

[0008] The tilting mechanism comprises a driving member, an eccentric wheel and a transmission assembly. The eccentric wheel is fixedly connected to the output end of the driving member. One end of the transmission assembly is rotationally connected to the eccentric wheel, and the other end is fixedly connected to the rotating middle plate.

[0009] As a further improvement of the technical solution of the present invention, it also includes a support assembly, the support assembly includes a fixed middle plate, the fixed middle plate is located above the rotating middle plate, and the fixed middle plate is parallel to or has an angle with the rotating middle plate.

[0010] As a further improvement of the technical solution of the present invention, the fixed middle plate is provided with a groove for the material trough to be embedded.

[0011] As a further improvement of the technical solution of the present invention, the tilting mechanism includes an articulated spring plate, both ends of which are fixedly connected to the fixed middle plate and the rotating middle plate respectively, and the fixed middle plate is swingably connected to the rotating middle plate through the articulated spring plate.

[0012] As a further improvement of the technical solution of the present invention, the transmission assembly also includes a connecting rod and a connecting angle block, the connecting angle block is fixedly connected to the rotating middle plate, and the two ends of the connecting rod are respectively rotatably connected to the connecting angle block and the eccentric wheel, and the driving member drives the rotating middle plate to swing up and down with the hinged spring sheet as the axis through the eccentric wheel, the connecting rod and the connecting angle block.

[0013] As a further improvement of the technical solution of the present invention, the connecting rod is provided with a first through hole and a second through hole, and the first through hole and the second through hole are respectively provided with a first bearing and a second bearing adapted to the first through hole and the second through hole, and the first bearing is fixedly connected to the eccentric wheel.

[0014] As a further improvement of the technical solution of the present invention, the support assembly also includes a support rod, the support rod is fixedly connected to the fixed middle plate, the support rod is fixedly connected to the driving member, and the support rod is provided with an opening adapted to the eccentric wheel.

[0015] As a further improvement of the technical solution of the present invention, the support assembly further includes a bottom plate and a plurality of support columns, and the plurality of support columns are fixedly arranged between the fixed middle plate and the bottom plate;

[0016] One end of the support rod away from the fixed middle plate is fixedly connected to the bottom plate.

[0017] As a further improvement of the technical solution of the present invention, it also includes a sensing component, which is a sensor for receiving the displacement of the rotating middle plate. The sensing component includes a sensor and a sensor sheet. The sensor is fixedly arranged below the fixed middle plate, and the sensor sheet is fixedly connected to the rotating middle plate.

[0018] The present invention further provides a light-curing 3D printer, including the tilting release device of the light-curing 3D printer, including a light source, an elevator and a building mechanism, the building mechanism including a building plate, the light source is located directly below the material trough, and the elevator controls the building plate to be suspended above the material trough;

[0019] The light source comprises a screen and a screen mounting plate, and the screen and the material trough are fixed on the rotating middle plate through the screen mounting plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The tilting release device of the light-curing 3D printer proposed by the present invention is to install the printing platform on the rotating middle plate, and drive the rotating middle plate through the tilting mechanism to achieve the tilting of the printing platform, so that the solidified layer is gradually separated from the printed model at a certain angle, thereby reducing the adhesion between the solidified layer and the printing platform to achieve the release effect, and at the same time reduce the release time with the help of the eccentric wheel mechanism, thereby increasing the printing speed. The tilting release device of the light-curing 3D printer has the characteristics of overcoming the adsorption force between the building plate and the screen and improving the accuracy and geometric shape of the printed object. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The technology of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0023] Figure 1 It is a schematic diagram of the exploded structure of the tilted release device of the light-curing 3D printer;

[0024] Figure 2 It is a schematic diagram of the structure of the tilted release state in the tilted release device of the light-curing 3D printer;

[0025] Figure 3 It is a schematic diagram of the structure of the horizontal state of the tilted release device of the light-curing 3D printer;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of a light-curing 3D printer;

[0027] Figure 5 It is a three-dimensional structural diagram of the building mechanism in a light-curing 3D printer;

[0028] Figure 6 It is a schematic diagram of the exploded structure of the building mechanism in a light-curing 3D printer.

[0029] Reference numerals:

[0030] 1. Rotate the middle plate;

[0031] 2. tilting mechanism; 21. driving member; 22. eccentric wheel; 23. transmission assembly; 231. connecting rod; 232. connecting angle block; 233. supporting rod; 234. opening; 235. first through hole; 236. second through hole; 237. first bearing; 238. second bearing; 24. hinged spring;

[0032] 3. Support assembly; 31. Fixed middle plate; 311. Slot; 32. Bottom plate; 33. Support column;

[0033] 4. Sensing component; 41. Sensor; 42. Sensing sheet;

[0034] 5. Feed trough;

[0035] 6. Building mechanism; 61. Building plate; 62. Panel; 63. Automatic adjustment component; 631. First fixed column; 632. First elastic member; 633. Housing; 634. Second fixed column; 635. Second elastic member; 64. Locking component; 641. Locking wrench; 642. First connecting block; 643. Lifting platform; 644. Connecting rod; 645. Third elastic member;

[0036] 7. Lift; 8. Light source; 81. Screen; 82. Screen mounting plate. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0038] A tilted release device for a light-curing 3D printer, referring to Figures 1 to 6 , including a rotating middle plate 1 and a tilting mechanism 2, the rotating middle plate 1 is fixedly connected to the material trough 5, the other end of the rotating middle plate 1 is movably connected to the tilting mechanism 2, the rotating middle plate 1 is fixedly connected to the material trough 5, and the tilting mechanism 2 drives the material trough 5 to tilt up and down through the rotating middle plate 1.

[0039] Among them, by installing the printing platform on the rotating middle plate 1, the printing platform is tilted by driving the rotating middle plate 1 through the tilting mechanism 2, so that the solidified layer is gradually separated from the printed model at a certain angle, thereby reducing the adhesion between the solidified layer and the printing platform to achieve the release effect, and at the same time, the eccentric wheel 22 mechanism is used to reduce the release time, thereby increasing the printing speed. The tilting release device of the light-curing 3D printer has the characteristics of reducing the adsorption force between the building plate 61 and the screen 81 and improving the accuracy and geometric shape of the printed object.

[0040] When the build plate 61 is lifted, the uncured liquid resin may not be completely removed during the Z-axis release process, resulting in interlayer residues and affecting the quality. Or after release, due to the high viscosity of the resin, it cannot flow back in time to fill the entire printing area, resulting in printing defects. In order to solve this problem, it is necessary to increase the lifting distance of the release, resulting in a longer time for each layer to be released. As a result, the release stage occupies a considerable proportion of the time in the entire printing process, making it difficult to effectively improve the printing efficiency. By setting an inclined release device, the adhesion between the solidified layer and the printing platform is reduced. Figure 1 As shown, the tilting mechanism 2 includes a driving member 21, an eccentric wheel 22 and a transmission assembly 23. The eccentric wheel 22 is fixedly connected to the output end of the driving member 21. One end of the transmission assembly 23 is rotatably connected to the eccentric wheel 22, and the other end is fixedly connected to the rotating middle plate 1. With the help of the eccentric wheel 22 structure, the movement distance of the tilted release is much smaller than the movement distance of the vertical release, which greatly reduces the time spent in the release stage, thereby increasing the printing speed. Preferably, the driving member 21 is a driving motor.

[0041] In one embodiment, referring to Figure 1 As shown, the inclined release device also includes a support assembly 3, which includes a fixed middle plate 31, which is located above the rotating middle plate 1, and is parallel to or at an angle to the rotating middle plate 1. The fixed middle plate 31 is provided with a slot 311 for the material feeding trough 5 to be embedded. Fixed ears, hand screws and a material trough 5 fixing piece are provided on both sides of the material trough 5. The material trough 5 fixing piece is fixedly arranged on the screen 81 mounting plate, and the hand screws penetrate the fixed ears and are fixedly connected to the material trough 5 fixing piece.

[0042] In one embodiment, the tilting mechanism 2 includes a hinged spring piece 24 , both ends of which are fixedly connected to the fixed middle plate 31 and the rotating middle plate 1 respectively, and the fixed middle plate 31 is swingably connected to the rotating middle plate 1 through the hinged spring piece 24 .

[0043] In one embodiment, the transmission assembly 23 further includes a connecting rod 644 and a connecting angle block 232, wherein the connecting angle block 232 is fixedly connected to the rotating middle plate 1, and the two ends of the connecting rod 644 are respectively connected to the connecting angle block 232 and the eccentric wheel 22 for rotation, and the driving motor drives the rotating middle plate 1 to swing up and down with the hinged spring 24 as the axis through the eccentric wheel 22, the connecting rod 644 and the connecting angle block 232. The connecting rod 644 is provided with a first through hole 235 and a second through hole 236, and the first through hole 235 and the second through hole 236 are respectively provided with a first bearing 237 and a second bearing 238 adapted to the first through hole 235 and the second through hole 236, and the first bearing 237 is fixedly connected to the eccentric wheel 22. Preferably, the connecting angle block 232 is L-shaped, and an extension rod is provided at one end of the connecting angle block 232 connected to the second bearing 238, and the extension rod is inserted into the second bearing 238 and fixedly connected to the second bearing 238. Preferably, a hollow portion may be provided between the first through hole 235 and the second through hole 236 of the connecting rod 644 , and the hollow portion is conducive to lightweighting of the connecting rod 644 .

[0044] In one embodiment, the support assembly 3 further includes a support rod 233, the support rod 233 is fixedly connected to the fixed middle plate 31, the support rod 233 is fixedly connected to the drive motor, and the support rod 233 is provided with an opening 234 adapted to the eccentric wheel 22. The hinge spring 24 is located at an end away from the transmission mechanism. Preferably, the support rod 233 is Z-shaped, and the slot 311 is elliptical. The end face of the connecting corner block 232 facing away from the extension rod is in contact with one end face of the support rod 233.

[0045] In one embodiment, the support assembly 3 also includes a base plate 32 and a plurality of support columns 33, wherein the plurality of support columns 33 are fixedly disposed between the fixed middle plate 31 and the base plate 32; one end of the support rod 233 away from the fixed middle plate 31 is fixedly connected to the base plate 32, and four foot pads are also provided under the base plate 32, distributed at the four corners of the base plate 32.

[0046] In one embodiment, a camera is installed in the 3D printer to monitor and record the printing in real time, compare the actual printed model with the three-dimensional model, and detect the printing status in real time. The 3D printer is connected via a local area network to achieve remote control, online detection, and real-time viewing of the printing status of the 3D printer.

[0047] In one embodiment, the printer can be connected to a mobile phone and a computer client through a local area network, and the model can be selected through the cloud platform to remotely operate the printer to print the model. The printer has a built-in camera to feed back the detected printing screen in real time, and by comparing it with the 3D model, the printer feeds back the status in real time during the printing process. Remote control, online detection, and real-time viewing of 3D printers can be achieved anytime and anywhere.

[0048] In one embodiment, referring to Figure 5As shown, the building mechanism 6 also includes a panel 62, an automatic adjustment component 63 and a pressure sensor. The automatic adjustment component 63 is located between the building plate 61 and the panel 62. The surface of the building plate 61 is parallel to or at an angle with the surface of the panel 62. The building plate 61 is parallel to or at an angle with the screen 81. The pressure sensor is connected to the master control system. The pressure sensor transmits the received signal of the stress on the building plate 61 to the master control system. In order to avoid the situation where the printed model cannot stick to the building plate 61 and cause printing failure, the automatic adjustment component 63 is set at the building mechanism 6 to realize the adaptive ability of the building mechanism 6. This makes it possible to realize the automatic leveling of the building plate 61 of the 3D printer without manually leveling the building plate 61 during the printing process.

[0049] In one embodiment, referring to Figure 6 As shown, the automatic adjustment component 63 includes a first connecting component, a second connecting component and a shell 633. The building plate 61 is kept stationary in the horizontal direction by the first adjustment component, and the building plate 61 floats up and down in the Z-axis direction by the second adjustment component. The building plate 61 is connected to the panel 62 through the first connecting component and the second connecting component, and the shell 633 is fixedly connected to the panel 62.

[0050] Preferably, the first connection assembly includes four first fixed columns 631 and first elastic members 632. One end of the first fixed column 631 is fixedly connected to the building plate 61, and the other end passes through the housing 633 and is fixedly connected to the first elastic member 632. The other end of the first elastic member 632 is fixedly connected to the panel 62. The first connection assembly allows the building plate 61 and the panel 62 to remain stationary in the horizontal plane and to move up and down in the Z-axis direction.

[0051] Preferably, the second connection assembly includes four second fixed columns 634 and second elastic members 635, one end of the second fixed column 634 is fixedly connected to the building plate 61, the second elastic member 635 is nested in the end of the second fixed column 634 close to the panel 62, and the second elastic member 635 is respectively in contact with the panel 62 and the second fixed column 634. The second fixed column 634 and the panel 62 are floating, and a second elastic member 635 is installed between the two, so that the building plate 61 and the panel 62 are fixed in the horizontal plane, and can float up and down in the Z-axis direction according to the elastic force of the second elastic member 635. A sealing ring is provided in the middle section of the first fixed column 631 and the second fixed column 632.

[0052] In one embodiment, referring to Figure 6As shown, the construction mechanism 6 also includes a locking assembly 64, which is fixedly connected to the lifting mechanism 7; the locking assembly 64 includes a locking wrench 641, a first connecting block 642, a lifting platform 643 and a connecting rod 644, the first connecting block 642 is limitedly connected to the lifting platform 643, the lifting platform 643 is fixedly connected to the panel 62, the locking wrench 641 is rotatably connected to the first connecting block 642 through the connecting rod 644, and the first connecting block 642 is inserted into the lifting platform and is locked with the lifting platform 643 through the locking wrench 641.

[0053] In one embodiment, referring to Figure 6 As shown, the locking assembly 64 also includes a third elastic member 645, the pressure sensor is attached to the first connecting block 642, the third elastic member 645 is located in the lifting platform 643, one end of the third elastic member 645 is fixedly connected to the panel 62, and the other end is separated or abutted with the locking wrench 641; when the third elastic member 645 abuts with the locking wrench 641, the locking assembly 64 is locked, and when the locking assembly 64 is locked, it includes a natural state and a deformed state: when in the natural state: the third elastic member 645 abuts with the locking wrench 641; when in the deformed state: the third elastic member 645 abuts with the locking wrench 641, and the locking wrench 641 abuts against the first connecting block 642 through the connecting rod 644, and the first connecting block 642 is deformed. Preferably, the locking wrench 641 is eccentrically arranged, and the cam surface of the handle is moved downward by rotating the locking handle to achieve locking. The printing efficiency and quality are improved, and a more convenient and high-quality printing experience is provided for users. Preferably, the third elastic member 645 is a pressure spring sheet, and the cross section of the third elastic member 645 is in a "X" shape.

[0054] In one embodiment, referring to Figure 6 As shown, the deformation signal received by the pressure sensor includes a first deformation signal and a second deformation signal; when the first deformation signal is present: the building plate 61 and the screen 81 are pressed against each other to generate a first reaction force, and the first reaction force is transmitted to the first connecting block 642 through the third elastic member 645 to cause deformation; when the second deformation signal is present: the building plate 61 and the resin in the material tank 5 are pressed against each other to generate a second reaction force, and the second reaction force is transmitted to the first connecting block 642 through the third elastic member 645 to cause deformation.

[0055] Among them, a light-curing 3D printer includes the above-mentioned inclined release device, and also includes a light source 8, an elevator 7 and a building mechanism 6. The building mechanism 6 includes a building plate 61. The light source 8 is located directly below the material trough 5. The elevator 7 controls the building plate 61 to be suspended above the material trough 5. The light source 8 includes a screen 81 and a screen 81 mounting plate. The screen 81 and the material trough 5 are fixed to the rotating middle plate 1 through the screen 81 mounting plate. The screen 81 is fixedly connected to the rotating middle plate 1, and the screen 81 is attached to the bottom of the material trough 5. Preferably, the screen 81 is an LCD screen 81. Figure 2-3 As shown, the rotating middle plate 1 can be converted between the horizontal state and the inclined state. When the rotating middle plate 1 is in the horizontal state, it is parallel to the building plate 61, and there is a gap between the two required for printing parts, which is filled with liquid resin. The liquid resin is solidified after being irradiated by the light beam of the screen 81 embedded in the rotating middle plate 1. After the liquid resin is solidified, the tilting mechanism 2 drives one end of the rotating middle plate 1 to tilt downward, gradually separating from the building plate 61, and the space between the building plate 61 and the printing platform is filled with liquid resin again. At the same time, the elevator 7 pulls the building plate 61 upward to the height required for printing parts, and the rotating middle plate 1 returns from the inclined state to the horizontal state, and is parallel to the building plate 61 again, and there is a gap of a height between the building plate 61 and the rotating middle plate 1, which is filled with liquid resin again. The screen 81 irradiates the light beam again to solidify the liquid resin again; the material is stacked layer by layer over and over again to build the three-dimensional shape of the target part.

[0056] For other contents of the inclined release device of the light-curing 3D printer of the present invention, please refer to the prior art and will not be described in detail here.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0061] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A light-curing 3D printer, characterized in that: It includes a tilting release device and a building mechanism, wherein the tilting release device includes a rotating middle plate and a tilting mechanism, wherein the rotating middle plate is fixedly connected to the material trough, and the other end of the rotating middle plate is movably connected to the tilting mechanism, wherein the rotating middle plate is fixedly connected to the material trough, and the tilting mechanism drives the material trough to tilt up and down through the rotating middle plate; The tilting mechanism comprises a driving member, an eccentric wheel and a transmission assembly, wherein the eccentric wheel is fixedly connected to the output end of the driving member, one end of the transmission assembly is rotationally connected to the eccentric wheel, and the other end is fixedly connected to the rotating middle plate; It also includes a support assembly, the support assembly includes a fixed middle plate, the fixed middle plate is located above the rotating middle plate, and the fixed middle plate is parallel to or at an angle to the rotating middle plate; The tilting mechanism comprises an articulated spring sheet, both ends of which are fixedly connected to the fixed middle plate and the rotating middle plate respectively, and the fixed middle plate is swingably connected to the rotating middle plate through the articulated spring sheet; The transmission assembly also includes a connecting rod and a connecting angle block, the connecting angle block is fixedly connected to the rotating middle plate, the two ends of the connecting rod are respectively rotatably connected to the connecting angle block and the eccentric wheel, and the driving member drives the rotating middle plate to swing up and down with the hinged spring sheet as the axis through the eccentric wheel, the connecting rod and the connecting angle block; The building mechanism includes a building plate, a panel, an automatic adjustment component and a pressure sensor, wherein the automatic adjustment component is located between the building plate and the panel, the surface of the building plate is parallel to or at an angle to the surface of the panel, the building plate is parallel to or at an angle to the screen, and the pressure sensor is connected to the master control system, and the pressure sensor transmits a signal of stress on the building plate to the master control system; The automatic adjustment component includes a first connection component, a second connection component and a shell, the building plate is kept stationary in the horizontal direction by the first adjustment component, the building plate floats up and down in the Z-axis direction by the second adjustment component, the building plate is connected to the panel by the first connection component and the second connection component, and the shell is fixedly connected to the panel; The first connection assembly includes four first fixed columns and a first elastic member, one end of the first fixed column is fixedly connected to the building plate, the other end passes through the housing and is fixedly connected to the first elastic member, and the other end of the first elastic member is fixedly connected to the panel; The second connection assembly includes four second fixed columns and a second elastic member, one end of the second fixed column is fixedly connected to the building plate, the second elastic member is nested in one end of the second fixed column close to the panel, and the second elastic member is respectively abutted against the panel and the second fixed column; The construction mechanism also includes a locking assembly, which includes a locking wrench, a first connecting block, a lifting platform and a connecting rod. The first connecting block is limitedly connected to the lifting platform, the lifting platform is fixedly connected to the panel, the locking wrench is rotatably connected to the first connecting block through the connecting rod, and the first connecting block is inserted into the lifting platform and locked with the lifting platform through the locking wrench; The locking assembly also includes a third elastic member, the pressure sensor is attached to the first connecting block, the third elastic member is located in the lifting platform, one end of the third elastic member is fixedly connected to the panel, and the other end is separated from or abutted against the locking wrench; When the third elastic member abuts against the locking wrench, the locking assembly is locked. When the locking assembly is locked, it includes a natural state and a deformed state: When in the natural state: the third elastic member is in abutment with the locking wrench; When in a deformed state: the third elastic member cooperates with the locking wrench to press against the first connecting block through the connecting rod, and the first connecting block is deformed; The deformation signal received by the pressure sensor includes a first deformation signal and a second deformation signal; When the first deformation signal is generated, the building plate and the screen are pressed against each other to generate a first reaction force, and the first reaction force is transmitted to the first connecting block through the third elastic member to cause deformation; When the second deformation signal is sent, the building plate abuts against the resin in the material tank to generate a second reaction force, and the second reaction force is transmitted to the first connecting block through the third elastic member to cause deformation.

2. The light-curing 3D printer according to claim 1, characterized in that: The fixed middle plate is provided with a slot for the material trough to be embedded.

3. The light-curing 3D printer according to claim 1, characterized in that: The connecting rod is provided with a first through hole and a second through hole, and the first through hole and the second through hole are respectively provided with a first bearing and a second bearing matched with the first through hole and the second through hole, and the first bearing is fixedly connected to the eccentric wheel.

4. The light-curing 3D printer according to claim 1, characterized in that: The support assembly also includes a support rod, the support rod is fixedly connected to the fixed middle plate, the support rod is fixedly connected to the driving member, and the support rod is provided with an opening matched with the eccentric wheel.

5. The light-curing 3D printer according to claim 4, characterized in that: The support assembly further includes a bottom plate and a plurality of support columns, wherein the plurality of support columns are fixedly arranged between the fixed middle plate and the bottom plate; One end of the support rod away from the fixed middle plate is fixedly connected to the bottom plate.

6. The light-curing 3D printer according to claim 1, characterized in that: It also includes a sensing component, which is a sensor for receiving the displacement of the rotating middle plate. The sensing component includes a sensor and a sensor sheet. The sensor is fixedly arranged below the fixed middle plate, and the sensor sheet is fixedly connected to the rotating middle plate.

7. The light-curing 3D printer according to claim 1, characterized in that: It also includes a light source and an elevator, wherein the light source is located directly below the material trough, and the elevator controls the building plate to be suspended above the material trough; The light source comprises a screen and a screen mounting plate, and the screen and the material trough are fixed on the rotating middle plate through the screen mounting plate.

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