Photocuring 3D printing model separation and transfer mechanism

Abstract

The utility model belongs to the field of light -cured 3D printing post -processing discloses a kind of light -cured 3D printing model separation transfer mechanism, including base frame and separation unit, separation unit includes flat push subassembly and separation component, flat push subassembly includes direct drive submechanism and model transfer container, direct drive submechanism has direct drive output end, model transfer container is fixed on direct drive output end, direct drive submechanism is used to drive model transfer container to move along predetermined horizontal direction, separation component includes oblique drive submechanism and separation blade, oblique drive submechanism has oblique drive output end, separation blade is fixed on oblique drive output end, oblique drive submechanism is used to drive separation blade to move along predetermined oblique direction, and predetermined oblique direction is crossed with printing platform board, and predetermined oblique direction is towards 3D printing model, so that the contact line of separation blade and the lower plate surface of printing platform board forms separation blade line in straight line.

Description

Technical Field

[0001] This utility model belongs to the field of post-processing of photopolymer 3D printing, and specifically relates to a separation and transfer mechanism for photopolymer 3D printed models. Background Technology

[0002] A photopolymer 3D printer is a computer-aided device that uses photopolymerization technology to create three-dimensional models by curing liquid photosensitive resin in layers. Compared to fused deposition modeling (FDM), this technology offers higher printing precision and surface smoothness, achieving layer textures that are difficult to detect with the naked eye, and producing more durable finished products. As of 2021, this technology has been widely applied in fields such as figurine making, industrial design, dental care, custom jewelry, and anime model making.

[0003] like Figure 1 As shown, the photopolymer 3D printer has a horizontal printing platform for printing 3D models. The 3D model is printed layer by layer from the bottom surface of the printing platform downwards, resulting in a model with a suspended bottom. At the beginning of the printing process, an additional model base needs to be printed so that the 3D model can be bonded to the printing platform. In addition, in order to effectively print the complex outer contour of the model, an additional support structure needs to be printed on the outside of the outer contour of the 3D model.

[0004] For this reason, Figure 2 As shown, after the model is removed from the printing platform, due to the characteristics of photopolymer 3D printing, excess resin will inevitably adhere to the surface of the 3D printed model after printing. Therefore, the 3D printed model needs to be transferred to a cleaning container and the excess resin adhering to the surface of the 3D printed model needs to be washed away with alcohol in order to obtain the final 3D printed model.

[0005] However, it is obvious that because the model is relatively stiff when it is just removed from the printing platform and the printing is finished, it is very easy for it to undergo irreversible deformation of the supporting structure or the model itself due to improper manual force during the transfer process, resulting in a significant decrease in the quality of the final 3D printed model. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a photopolymerization 3D printing model separation and transfer mechanism that eliminates the need for manual intervention, significantly reducing the possibility of irreversible deformation of the support structure or the model itself, thereby greatly increasing the likelihood of obtaining a high-quality final 3D printed model.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A photopolymer 3D printing model separation and transfer mechanism is located near a photopolymer 3D printer. The photopolymer 3D printer has a horizontal printing platform plate, and the 3D printed model is suspended and adhered to the lower surface of the printing platform plate. The mechanism is characterized by comprising: a base frame and a separation unit mounted on the base frame, including a pushing component and a separation component. The pushing component includes a direct drive sub-mechanism and a model transfer container. The direct drive sub-mechanism is mounted on the base frame and has a direct drive output end. The model transfer container is fixed to the direct drive output end. The direct drive sub-mechanism drives the model transfer container to move along a predetermined horizontal direction, which is parallel to the printing platform plate and passes through the 3D printed model. The model is located directly below the transfer container, with an opening above it. The container opening is larger than the maximum horizontal cross-section of the 3D printed model. The separation component includes an inclined drive sub-mechanism and a separation blade. The inclined drive sub-mechanism is located near the direct drive sub-mechanism and is mounted on the base frame. The inclined drive sub-mechanism has an inclined drive output end, and the separation blade is fixed on the inclined drive output end. The inclined drive sub-mechanism is used to drive the separation blade to move along a predetermined inclined direction, which intersects with the printing platform plate and faces the 3D printed model. Thus, the contact line between the separation blade and the lower surface of the printing platform plate forms a straight separation blade line, and the separation blade line is located near the 3D printed model.

[0009] Preferably, the direct drive submechanism includes an active precision linear mechanism group, which includes two Boselier-Lipkin linkages, two synchronous linkages correspondingly arranged on the two Boselier-Lipkin linkages, a synchronous hinge support, a series gear set, and a drive motor. The Boselier-Lipkin linkage has a torque input end and an output hinge end. The series gear set has three gears that mesh sequentially along a straight line. One end of each of the two synchronous linkages is respectively arranged on the two end gears of the series gear set, and the other end is respectively arranged on the output shaft of the drive motor and the rotation shaft of the synchronous hinge support. The two synchronous linkages are of the same length, and the two output hinge ends are distributed along a predetermined horizontal direction, forming a direct drive output end. Thus, when the drive motor rotates, the two synchronous linkages move synchronously.

[0010] Furthermore, the Poselier-Lipkin linkage also has driven hinge ends, with the two driven hinge ends respectively mounted on the two end gears of the tandem gear set.

[0011] Furthermore, the push assembly also has a push rod, which is simultaneously mounted on both output hinge ends, so that the push rod extends along a predetermined horizontal direction. The end of the push rod away from the direct drive submechanism has a container support, which has a horizontal support plate portion and a baffle portion. The support plate portion and the baffle portion are bent continuously in the vertical plane, and the baffle portion is farther away from the direct drive submechanism than the support plate portion and is bent upward based on the support plate portion. The support plate portion is used to support the transfer container in the model, and the baffle portion is used to restrict the unilateral movement of the transfer container in the model.

[0012] Preferably, the direct drive submechanism further includes a driven precision linear mechanism group and a coupling gear. The driven precision linear mechanism group does not have a drive motor, and its structure is the same as that of the active precision linear mechanism group. The drive motor is a dual-output shaft motor. The two synchronous hinge supports are coaxially linked through a linkage shaft. The two output shafts of the drive motor are coaxial and horizontally arranged relative to each other. One output shaft is connected to the synchronous linkage of the active precision linear mechanism group, and the other output shaft has a first output gear. The coupling gear has an output shaft. The coupling gear meshes with the first output gear, and the output shaft is fixed to the torque input end of a Posellier-Lipkin linkage of the driven precision linear mechanism group.

[0013] Furthermore, the separation component is located between the active precision linear mechanism group and the driven precision linear mechanism group. The slant drive sub-mechanism includes a mechanism housing, a drive sprocket, a drive chain, a slant drive gear, and a slant drive motor.

[0014] The mechanism housing has a volute channel inside, and a chain outlet that opens the volute channel to the outside. A drive chain is fitted inside the volute channel, and a drive sprocket is located inside the mechanism housing and near the volute channel. The drive sprocket and drive chain are interlocked, and the drive chain has a slanted drive output end that extends out of the mechanism housing through the chain outlet. The slanted drive motor and slanted drive gear are both located outside the mechanism housing. The slanted drive gear is coaxial with the drive sprocket. The output end of the slanted drive motor has a second output gear that meshes with the slanted drive gear. When the slanted drive motor rotates, the slanted drive gear drives the drive chain to move, thereby driving the separation blade to move along a predetermined inclination direction. At the same time, part of the drive chain moves inside the volute channel, thus forming movement along the volute.

[0015] Preferably, the present invention further includes a transfer assembly, comprising an assembly base, a transfer gear, a transfer bracket, and a transfer motor. The assembly base and the transfer motor are both mounted on a base frame. The transfer gear is mounted on the assembly base, and the rotation axis of the transfer gear extends vertically. The output shaft of the transfer motor has a third output gear that meshes with the transfer gear. The transfer bracket is vertically and coaxially mounted on the transfer gear. The transfer bracket has a clamping sub-mechanism facing the transfer container in the model, and the clamping sub-mechanism is used to clamp the transfer container in the model.

[0016] Furthermore, the transfer assembly also includes a lifting cylinder with a vertically extending output shaft, and the assembly base is mounted on the output shaft of the lifting cylinder.

[0017] Furthermore, the clamping sub-mechanism has a clamping base, a pair of clamping components, and a clamping trigger rod. The pair of clamping components are horizontally and symmetrically arranged on the clamping base. The clamping components include clamping arms and clamping claws that face the model transfer container and are hinged to each other. The clamping claws extend in an arc and form a lever mechanism based on the clamping arms. The two ends of the clamping claws are respectively used as the active end and the driven end, and the driven end is closer to the model transfer container than the active end. The two ends of the clamping trigger rod are respectively hinged to the two active ends. When the model transfer container moves along a predetermined horizontal direction to collide with the clamping trigger rod, the driven ends of the pair of clamping arms simultaneously rotate towards each other, thereby clamping the model transfer container.

[0018] Furthermore, the base frame has an integrated mounting sub-frame and a placement sub-frame. The separation unit is set on the mounting sub-frame, and the placement sub-frame is used to place the model cleaning container, in which the 3D printed model is cleaned.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. Because the photopolymer 3D printing model separation and transfer mechanism of this utility model includes a base frame and a separation unit, the separation unit includes a horizontal pushing component and a separation component, the horizontal pushing component includes a direct drive sub-mechanism and a model transfer container, the direct drive sub-mechanism has a direct drive output end, the model transfer container is fixed on the direct drive output end, the direct drive sub-mechanism is used to drive the model transfer container to move along a predetermined horizontal direction, the separation component includes an inclined drive sub-mechanism and a separation blade, the inclined drive sub-mechanism has an inclined drive output end, the separation blade is fixed on the inclined drive output end, the inclined drive sub-mechanism is used to drive the separation blade to move along a predetermined inclined direction, and the predetermined inclined direction intersects with the printing platform plate, and the predetermined inclined direction is towards the 3D printed model, thereby separating the separation blade from the lower surface of the printing platform plate. The contact line forms a straight separation blade line. This means that the direct drive output end can horizontally move the model transfer container directly beneath the 3D printed model or horizontally move the model transfer container carrying the 3D printed model away. The inclined drive output section can tilt the separation blade to contact the printing platform plate. Continuing to move the separation blade causes it to bend and deform, ensuring the separation blade line completely passes through the base of the 3D printed model, separating the 3D printed model from the printing platform plate into the interior of the model transfer container. Therefore, this invention requires no manual intervention, greatly reducing the possibility of irreversible deformation of the support structure or the model itself, thus significantly increasing the likelihood of obtaining a high-quality final 3D printed model.

[0021] 2. Because the direct drive sub-mechanism of this utility model includes an active precise linear mechanism group, which includes two Boselier-Lipkin linkages, two synchronous linkages correspondingly arranged on the two Boselier-Lipkin linkages, a synchronous hinge support, a series gear set, and a drive motor, the Boselier-Lipkin linkages have a torque input end and an output hinge end, the series gear set has three gears meshing sequentially along a straight line, one end of each of the two synchronous linkages is respectively arranged on the two end gears of the series gear set, and the other end is respectively arranged on the output shaft of the drive motor and the rotation shaft of the synchronous hinge support, and the two synchronous linkages are of the same length, the two output hinge ends are distributed along a predetermined horizontal direction, and the two output hinge ends form a direct drive output end, so that when the drive motor rotates, the two synchronous linkages move synchronously. Therefore, this utility model provides a more stable and precise linear drive for the transfer container in the model through the two Boselier-Lipkin linkages, and realizes real-time synchronization of the two Boselier-Lipkin linkages through the two synchronous linkages.

[0022] 3. Because the direct drive sub-mechanism of this utility model also includes a driven precise linear mechanism group and a coupling gear, the driven precise linear mechanism group does not have a drive motor, and its structure is the same as that of the active precise linear mechanism group. The drive motor is a dual-output shaft motor, and the two synchronous hinge supports are coaxially linked through the linkage shaft. The two output shafts of the drive motor are coaxial and horizontally arranged relative to each other. One output shaft is connected to the synchronous linkage of the active precise linear mechanism group, and the other output shaft has a first output gear. The coupling gear has an output shaft, and the coupling gear meshes with the first output gear. The output shaft is fixed to the torque input end of a Boselier-Lipkin linkage of the driven precise linear mechanism group. Therefore, this utility model can provide a more stable precise linear drive for the transfer container in the model through the real-time synchronous linkage of the active precise linear mechanism group and the driven precise linear mechanism group.

[0023] 4. Because the separation component of this utility model is located between the active precision linear mechanism group and the driven precision linear mechanism group, the slant drive sub-mechanism includes a mechanism housing, a drive sprocket, a drive chain, a slant drive gear, and a slant drive motor. A volute channel is formed inside the mechanism housing, and the mechanism housing has a chain outlet that opens the volute channel to the outside. The drive chain is fitted inside the volute channel. The drive sprocket is located inside the mechanism housing and near the volute channel. The drive sprocket and drive chain are inserted into each other, and the drive chain has a slant drive output end that extends out of the mechanism housing through the chain outlet. The slant drive motor and slant drive gear are both located outside the mechanism housing, and the slant drive gear is coaxially arranged with the drive sprocket. The output end of the slant drive motor has a second output gear that meshes with the slant drive gear. When the slant drive motor rotates, the slant drive gear drives the drive chain to move, thereby driving the separation blade to move along a predetermined tilt direction. At the same time, part of the drive chain moves inside the worm channel, thus forming movement along the worm line. The drive chain is a common single-sided curved chain on the market. Therefore, when inside the mechanism housing, the drive chain can bend to one side to form a curved shape. When the drive chain leaves the mechanism housing and continues to move upward at an angle, the drive chain cannot bend to the other side and forms a straight shape. Therefore, this utility model can realize the slant drive sub-mechanism with a simple structure.

[0024] 5. Because the clamping sub-mechanism of this utility model has a clamping base, a pair of clamping components, and a clamping trigger rod, the pair of clamping components are horizontally and symmetrically arranged on the clamping base. The clamping components include clamping arms and clamping claws that face the model transfer container and are hinged to each other. The clamping claws extend in an arc and form a lever mechanism based on the clamping arms. The two ends of the clamping claws are respectively used as the active end and the driven end, and the driven end is closer to the model transfer container than the active end. The two ends of the clamping trigger rod are respectively hinged to the two active ends. When the model transfer container moves along a predetermined horizontal direction and collides with the clamping trigger rod, the driven ends of the pair of clamping arms simultaneously rotate towards each other, thereby clamping the opposite side walls of the model transfer container. Therefore, the clamping sub-mechanism of this utility model has a simple structure and can clamp the opposite side walls of the model transfer container through collision triggering. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a photopolymer 3D printer, a 3D printed model, a model base, and a support structure.

[0026] Figure 2 Photos of the 3D printed model, model base, and supporting structure. Figure 1 , Figure 2 Unlike the 3D printed models, for ease of display, leader lines have not been added; instead, numbers have been directly added to the corresponding areas.

[0027] Figure 3This is a schematic diagram of the photopolymer 3D printing model separation and transfer mechanism according to an embodiment of the present invention. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of the photopolymer 3D printing model separation and transfer mechanism according to an embodiment of the present invention. Figure 2 ;

[0029] Figure 5 for Figure 4 Side view;

[0030] Figure 6 A schematic diagram of the pushing component according to an embodiment of this utility model. Figure 1 ;

[0031] Figure 7 A schematic diagram of the pushing component according to an embodiment of this utility model. Figure 2 ;

[0032] Figure 8 The geometric schematic diagram of the Boselier-Lipkin linkage;

[0033] Figure 9 This is a schematic diagram of the separation component according to an embodiment of the present invention;

[0034] Figure 10 This is an assembly diagram of the separate components according to an embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram of the clamping sub-mechanism and the model transfer container according to an embodiment of the present invention.

[0036] In the diagram: P, printing platform plate; M, 3D printed model; F, model base; C, support structure; 100, photopolymer 3D printed model separation and transfer mechanism; T, photopolymer 3D printer; 10, base frame; 11, mounting sub-frame; 12, placement sub-frame; V, model cleaning container; 20, separation unit; 21, horizontal push assembly; 211, direct drive sub-mechanism; D1, predetermined horizontal direction; 2111, active precision linear mechanism group; 211 11. Posellier-Lipkin linkage, 21111a. Torque input end, 21111b. Driven hinge end, 21111c. Output hinge end, 21111C. Direct drive output end, 21112. Synchronizing linkage, 21113. Synchronizing hinge support, 21113A. Linkage shaft, 21113B. Auxiliary fixing shaft, 21114. Tandem gear set, 21115. Drive motor, 211151. First output gear, 2 112. Coupling gear; 2113. Driven precision linear mechanism assembly; 212. Horizontal push rod; 2121. Container support; 2121a. Pallet section; 2121b. Baffle section; 213. Model transfer container; 22. Separation assembly; 221. Inclined drive sub-mechanism; D2. Predetermined tilt direction; 2211. Mechanism housing; 2211a. Wormhole channel; 2211b. Chain outlet; 2212. Drive sprocket; 2213. Drive... Chain, 2213a, slant drive output end, 2214, slant drive gear, 2215, slant drive motor, 222, separating blade, 30, transfer assembly, 31, transfer gear, 32, transfer bracket, 321, clamping sub-mechanism, 3211, clamping base, 3212, clamping assembly, 32121, clamping arm, 32122, clamping claw, 32122a, driving end, 32122b, driven end, 3213, clamping trigger rod. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following embodiments, in conjunction with the accompanying drawings, specifically illustrate the photopolymerization 3D printing model separation and transfer mechanism of this utility model. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0038] like Figures 3 to 5 As shown, in this embodiment, the photopolymer 3D printing model separation and transfer mechanism 100 is located near the photopolymer 3D printer T. The photopolymer 3D printer T has a horizontal printing platform plate P. The 3D printing model M is suspended and is bonded to the lower surface of the printing platform plate P through the model base F.

[0039] The photopolymer 3D printed model separation and transfer mechanism 100 includes a base frame 10, a separation unit 20, and a transfer component 30.

[0040] The base frame 10 has an integrated mounting sub-frame 11 and a placement sub-frame 12. The separation unit 20 is set on the mounting sub-frame 11. The placement sub-frame 12 is used to place the model cleaning container V. The 3D printed model M is cleaned in the model cleaning container V to remove the uncured resin remaining on the surface of the 3D printed model M. Specifically, the mounting sub-frame 11 is closer to the photocurable 3D printer T than the placement sub-frame 12.

[0041] The separation unit 20 is mounted on the mounting sub-frame 11 of the base frame 10. The separation unit 20 includes a push assembly 21 and a separation assembly 22.

[0042] like Figure 6 and Figure 7 As shown, the horizontal push assembly 21 includes a direct drive submechanism 211, a horizontal push support rod 212, and a model transfer container 213.

[0043] The direct drive submechanism 211 has a direct drive output end 21111C, and the model transfer container 213 is fixed on the direct drive output end 21111C. The direct drive submechanism 211 is used to drive the model transfer container 213 to move along a predetermined horizontal direction D1, which is parallel to the printing platform plate P and passes directly below the 3D printed model M. The model transfer container 213 has a container opening (not shown in the figure) on its top. The container opening is larger than the maximum horizontal cross section of the 3D printed model M. Therefore, when the 3D printed model M is separated from the printing platform plate P and the model transfer container 213 is located directly below the 3D printed model M, the 3D printed model M will fall into the interior of the model transfer container 213 through the container opening.

[0044] The direct drive submechanism 211 is mounted on the mounting subframe 11. The direct drive submechanism 211 includes an active precision linear mechanism group 2111, a coupling gear 2112, and a driven precision linear mechanism group 2113.

[0045] The active precision linear mechanism assembly 2111 includes two Boselier-Lipkin links 21111, two synchronous links 21112 correspondingly arranged on the two Boselier-Lipkin links 21111, a synchronous hinge support 21113, a series gear set 21114, and a drive motor 21115.

[0046] The Boselier-Lipkin linkage 21111 has a torque input end 21111a, a driven hinge end 21111b, and an output hinge end 21111c. The two output hinge ends 21111c are distributed along a predetermined horizontal direction D1, thereby forming a direct drive output end 21111C.

[0047] Specifically, the Posellier-Lipkin linkage, invented in 1864, is a mechanism used to output precise linear motion, such as... Figure 8As shown, A, B, C, D, E, and O are all hinge points, where AC=AD, BC=CE=BD=DE, and 0A=OB. Points A and O are hinge points that can only rotate and cannot move. When torque is input at point O and the axis of rotation is perpendicular to the paper, point E will move precisely along the EN trajectory. That is, the input of the Posellier-Lipkin linkage is the torque at point O, and the output is the precise linear movement of point E. AC and AD will continue to rotate, and the size of the hinge angle between AC and AD will also change. Thus, the torque input end 21111a corresponds to point O, the driven hinge end 21111b corresponds to point A, the output hinge end 21111c corresponds to point E, and the EN direction corresponds to the predetermined horizontal direction D1.

[0048] The tandem gear set 21114 has three gears meshing sequentially along a straight line parallel to a predetermined horizontal direction D1. Specifically, the tandem gear set 21114 is located at the bottom end of the two Poselier-Lipkin linkages 21111.

[0049] One end of each of the two synchronizing links 21112 is respectively mounted on the shafts of the two end gears of the tandem gear set 21114, and the two driven hinge ends 21111b are also respectively mounted on the shafts of the two end gears of the tandem gear set 21114. The other ends of the two synchronizing links 21112 are respectively mounted on the output shaft of the drive motor 21115 and the rotation shaft of the synchronizing hinge support 21113, and the two synchronizing links 211112 are of the same length, so that when the drive motor 211115 rotates, the two synchronizing links 211112 achieve synchronous movement through the tandem gear set 21114.

[0050] The drive motor 21115 is a dual-output-shaft motor. The two output shafts of the drive motor 21115 are coaxial and horizontally arranged relative to each other. One output shaft is connected to the synchronous linkage of the active precision linear mechanism group 21115, and the other output shaft has a first output gear 211151. Specifically, the extension axes of the two output shafts of the drive motor 21115 are perpendicular to the predetermined horizontal direction D1.

[0051] The driven precision linear mechanism group 2113 does not have a drive motor 21115, but its structure is the same as that of the active precision linear mechanism group 2111. That is, the driven precision linear mechanism group 2113 includes two Boselier-Lipkin links 21111, two synchronous links 21112 correspondingly arranged on the two Boselier-Lipkin links 21111, a synchronous hinge support 21113, and a series gear set 21114. Thus, the active precision linear mechanism group 2111 and the driven precision linear mechanism group 2113 form two direct drive output terminals 21111C.

[0052] The two synchronous hinge supports 21113 are coaxially linked through the linkage shaft 21113A. Specifically, among the three pairs of gears formed by the two series gear sets 21114, one pair is coaxially linked through the auxiliary fixing shaft 21113B.

[0053] The coupling gear 2112 meshes with the first output gear 211151. The coupling gear 2112 has its own output shaft (not shown in the figure), and the output shaft is fixed to the torque input end 21111a of a Posellier-Lipkin link 21111 of the driven precision linear mechanism assembly 2113.

[0054] There are two push rods 212, which are respectively set on the active precision linear mechanism group 2111 and the moving precision linear mechanism group 2113. Each push rod 212 is set on two output hinge ends 21111c, that is, each push rod 212 is set on one direct drive output end 21111C, so that the push rod 212 extends along the predetermined horizontal direction D1.

[0055] The end of the push rod 212, which is away from the direct drive submechanism 211, has a container support 2121, that is, the container support 2121 faces the 3D printed model M.

[0056] The container support 2121 has a horizontal pallet portion 2121a and a baffle portion 2121b, and the pallet portion 2121a and the baffle portion 2121b are bent continuously in a vertical plane. The baffle portion 2121b is farther away from the direct drive sub-mechanism 211 than the pallet portion 2121a, and the baffle portion 2121b is bent upward based on the pallet portion 2121a. Specifically, the pallet portion 2121a and the baffle portion 2121b are vertically continuous in a vertical plane, and the two container supports 2121 together form a support for the transfer container 213 in the model.

[0057] The pallet portion 2121a is used to support the model transfer container 213, and the baffle portion 2121b is used to restrict the unilateral movement of the model transfer container 212 toward the photopolymer 3D printer T.

[0058] like Figure 9 and Figure 10 As shown, the separation component 22 is located between the active precision linear mechanism group 2111 and the driven precision linear mechanism group 2113.

[0059] The separation assembly 22 includes a slant drive sub-mechanism 221 and a separation blade 222. Specifically, there are two slant drive sub-mechanisms 221 and one separation blade 222.

[0060] The oblique drive sub-mechanism 221 is located next to the direct drive sub-mechanism 211 and is mounted on the base frame 10. The oblique drive sub-mechanism 221 has an oblique drive output end 2213a and a separation blade 222 is fixed on the oblique drive output end 2213a. Specifically, the two separation components 22 have two oblique drive output ends 2213a and the separation blade 222 is fixed on both oblique drive output ends 2213a.

[0061] The inclined drive mechanism 221 is used to drive the separating blade 222 to move along a predetermined inclined direction D2, and the predetermined inclined direction D2 intersects the surface of the printing platform plate P at an inclination, and the predetermined inclined direction D2 is inclined toward the 3D printed model, so that the contact line between the separating blade 222 and the lower surface of the printing platform plate P forms a straight separating blade line (not shown in the figure), and the separating blade line is located near the 3D printed model M.

[0062] The slant drive sub-mechanism 221 includes a mechanism housing 2211, a drive sprocket 2212, a drive chain 2213, a slant drive gear 2214, and a slant drive motor 2215.

[0063] The interior of the housing 2211 has a spiral channel 2211a, and the housing 2211 has a chain outlet 2211b that opens the spiral channel 2211a to the outside.

[0064] The drive chain 2213 is fitted inside the worm gear channel 2211a. The drive sprocket 2212 is located inside the mechanism housing 2211 and near the worm gear channel 2211a. The drive sprocket 2212 is inserted into the drive chain 2213, and the drive chain 2213 has a slanted drive output end 2213a that extends out of the mechanism housing 2211 through the chain outlet 2211b. Specifically, the drive chain 2213 is a common single-sided curved chain, so that when inside the mechanism housing 2211, the drive chain 2213 can be bent to one side to form a curved shape. When the drive chain 2213 is inside the mechanism housing 2211, it can be bent to one side to form a curved shape. 13 After leaving the housing 2211, when it continues to move upward at an angle, the drive chain 2213 forms a straight shape because it cannot bend to another area. This drives the separating blade 222 to move towards the printing platform plate P along the predetermined tilt direction D2. When the separating blade 222 contacts the lower surface of the printing platform plate P, a separating blade line is formed. Since the drive chain 2213 is still moving along the predetermined tilt direction D2 at this time, the separating blade 222 bends due to the obstruction of the printing platform plate P, causing the separating blade line to move and cut on the lower surface of the printing platform plate P until the 3D printed model M is cut and separated from the printing platform plate P.

[0065] Both the slant drive motor 2215 and the slant drive gear 2214 are located outside the mechanism housing 2211. The slant drive gear 2215 is coaxially arranged with the drive sprocket 2213. The output end of the slant drive motor 2215 has a second output gear (not shown in the figure) that meshes with the slant drive gear 2214.

[0066] When the slant drive motor 2215 rotates, the slant drive gear 2214 drives the drive chain 2213 to move, thereby driving the separation blade 222 to move along the predetermined inclination direction D. At the same time, part of the drive chain 2213 moves inside the worm channel 2211a, thereby forming a curved movement along the worm line.

[0067] The transfer assembly 30 includes a lifting cylinder (not shown in the attached drawings), an assembly base (not shown in the attached drawings), a transfer motor (not shown in the attached drawings), a transfer gear 31, and a transfer bracket 32.

[0068] The lifting cylinder is mounted on the base frame and has a vertically extending output shaft. The component base is mounted on the output shaft of the lifting cylinder.

[0069] Both the component base and the transfer motor are mounted on the mounting sub-frame 11. The transfer gear 31 is rotatably mounted on the top of the component base, and the rotation axis of the transfer gear 31 extends vertically. The output shaft of the transfer motor has a third output gear (not shown in the figure) that meshes with the transfer gear 31, so that when the transfer motor rotates, it drives the transfer gear 31 to rotate.

[0070] The transfer bracket 32 ​​is vertically and coaxially mounted on the transfer gear 31. The transfer bracket 32 ​​has a clamping sub-mechanism 321 facing the model transfer container 213. The clamping sub-mechanism 321 is used to clamp the model transfer container 213. Specifically, when the clamping sub-mechanism 321 clamps the model transfer container 213 and the transfer gear 31 rotates, the clamping sub-mechanism 321 can rotate and transfer the clamped model transfer container 213 to directly above the model cleaning container V, and lower the transfer bracket 32 ​​through the lifting cylinder, thereby reducing the distance between the model transfer container 213 and the bottom surface of the model cleaning container V.

[0071] like Figure 11 As shown, the clamping sub-mechanism 321 has a clamping base 3211, a pair of clamping components 3212 and a clamping trigger rod 3213.

[0072] Specifically, the clamping base 3211 is fixed on the transfer bracket 32.

[0073] A pair of clamping components 3212 are horizontally and symmetrically arranged on the clamping base 3211. Specifically, the pair of clamping components 3212 have an "eight" shaped structure, with their larger opening facing the model transfer container 213.

[0074] The clamping assembly 3212 includes a clamping arm 32121 and a clamping claw 32122 that are hinged to each other and face the model transfer container 213. The clamping claw 32122 extends in an arc and forms a lever mechanism based on the clamping arm 32121. The two ends of the clamping claw 32122 are respectively used as the active end 32122a and the driven end 32122b, and the driven end 32122b is closer to the model transfer container 213 than the active end 32122a.

[0075] Specifically, the clamping base 3211 is in the shape of a horizontal rod, and the two clamping arms 32121 are respectively hinged to the two ends of the clamping base 3211, and the other end of the clamping arm 32121 is the lever fulcrum of the clamping claw 32122.

[0076] The two ends of the clamping trigger rod 3213 are respectively hinged to the two active ends 32122a. When the model transfer container 213 moves along the predetermined horizontal direction D1 and collides with the clamping trigger rod 3213, the driven ends 32122b of a pair of clamping arms 32121 rotate towards each other simultaneously, thereby clamping the model transfer container 213.

[0077] Specifically, the model transfer container 213 is a transfer basket with hollowed-out sides. The driven ends 32122b of a pair of clamping arms 32121 rotate in opposite directions simultaneously, so that the driven ends 32122b are inserted into the hollowed-out sides of the model transfer container 213, thereby realizing the clamping claws 32122 clamping the model transfer container 213.

[0078] Specifically, the clamping trigger rod 3213 can be manually moved in the opposite direction to make the driven ends 32122b of a pair of clamping arms 32121 rotate simultaneously in opposite directions, thereby achieving the reset of the clamping assembly 3212.

[0079] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Various modifications or variations that can be made by those skilled in the art without creative effort within the scope of the appended claims are still within the scope of protection of this patent.

Claims

1. A photopolymer 3D printing model separation and transfer mechanism, located near a photopolymer 3D printer, the photopolymer 3D printer having a horizontal printing platform plate, the 3D printing model being suspended and adhered to the lower surface of the printing platform plate, characterized in that, include: Base frame, The separation unit, mounted on the base frame, includes a pushing assembly and a separation assembly. The horizontal pushing assembly includes a direct-drive sub-mechanism and a model transfer container. The direct-drive sub-mechanism is mounted on the base frame and has a direct-drive output end. The model transfer container is fixed to the direct-drive output end. The direct-drive sub-mechanism drives the model transfer container to move along a predetermined horizontal direction, which is parallel to the printing platform plate and passes directly below the 3D printed model. The model transfer container has an opening at the top, which is larger than the maximum horizontal cross-section of the 3D printed model. The separation assembly includes an oblique drive sub-mechanism and a separation blade. The oblique drive sub-mechanism is located near the direct drive sub-mechanism and is mounted on the base frame. The oblique drive sub-mechanism has an oblique drive output end, and the separation blade is fixed on the oblique drive output end. The oblique drive sub-mechanism is used to drive the separation blade to move along a predetermined oblique direction, which intersects with the printing platform plate and faces the 3D printed model. As a result, the contact line between the separation blade and the lower surface of the printing platform plate forms a straight separation blade line, and this separation blade line is located near the 3D printed model.

2. The photopolymerization 3D printing model separation and transfer mechanism according to claim 1, characterized in that: in, The direct-drive submechanism includes an active precision linear mechanism assembly, which comprises two Boselier-Lipkin links, two synchronous links correspondingly mounted on the two Boselier-Lipkin links, a synchronous hinge support, a series gear set, and a drive motor. The Boselier-Lipkin linkage has a torque input end and an output hinge end. The tandem gear set has three gears meshing sequentially along a straight line. One end of each of the two synchronizing links is respectively mounted on the two end gears of the tandem gear set, and the other end is respectively mounted on the output shaft of the drive motor and the rotation shaft of the synchronizing hinge support. The two synchronizing links are of the same length. The two output hinge ends are distributed along the predetermined horizontal direction, and the two output hinge ends form the direct drive output end. Thus, when the drive motor rotates, the two synchronous connecting rods move synchronously.

3. The photopolymerization 3D printing model separation and transfer mechanism according to claim 2, characterized in that: in, The Poselier-Lipkin linkage also has driven hinge ends, and the two driven hinge ends are respectively disposed on the two end gears of the tandem gear set.

4. The photopolymerization 3D printing model separation and transfer mechanism according to claim 3, characterized in that: in, The push assembly also includes a push rod, which is simultaneously disposed on both output hinge ends, thereby extending along the predetermined horizontal direction. The end of the push rod, located away from the direct drive submechanism, has a container support. This container support has a horizontal support plate portion and a baffle portion, wherein the support plate portion and the baffle portion are continuously bent in a vertical plane, and the baffle portion is located away from the direct drive submechanism from the support plate portion and is bent upwards based on the support plate portion. The pallet is used to support the model transfer container, and the baffle is used to restrict the unilateral movement of the model transfer container.

5. The photopolymer 3D printing model separation and transfer mechanism according to any one of claims 2-4, characterized in that: in, The direct-drive submechanism also includes a driven precision linear mechanism assembly and a coupling gear. The driven precision linear mechanism assembly is equipped with a drive motor, and the rest of its structure is the same as that of the active precision linear mechanism assembly. The drive motor is a dual-output-shaft motor, and the two synchronous hinge supports are coaxially linked via a linkage shaft. The two output shafts of the drive motor are coaxial and horizontally arranged relative to each other. One output shaft is connected to the synchronous linkage of the active precision linear mechanism assembly, and the other output shaft has a first output gear. The coupling gear has an output shaft, which meshes with the first output gear, and the output shaft is fixed to the torque input end of a Posellier-Lipkin link of the driven precision linear mechanism assembly.

6. The photopolymerization 3D printing model separation and transfer mechanism according to claim 5, characterized in that: in, The separation component is located between the active precision linear mechanism group and the driven precision linear mechanism group. The oblique drive submechanism includes a mechanism housing, a drive sprocket, a drive chain, an oblique drive gear, and an oblique drive motor. The interior of the housing of the mechanism has a spiral channel, and the housing has a chain outlet that opens the spiral channel to the outside. The drive chain is disposed inside the worm gear channel, and the drive sprocket is located inside the mechanism housing and near the worm gear channel. The drive sprocket is inserted into the drive chain, and the drive chain has a slanted drive output end that extends out of the mechanism housing through the chain outlet. Both the slant drive motor and the slant drive gear are disposed outside the mechanism housing. The slant drive gear is coaxially arranged with the drive sprocket. The output end of the slant drive motor has a second output gear that meshes with the slant drive gear. When the slant drive motor rotates, the slant drive gear drives the drive chain to move, thereby the drive chain drives the separating blade to move along the predetermined tilt direction. At the same time, part of the drive chain moves inside the worm channel, thereby forming movement along the worm line.

7. The photopolymer 3D printed model separation and transfer mechanism according to claim 1, characterized in that, Also includes: The transfer assembly includes a base, transfer gears, a transfer bracket, and a transfer motor. Both the component base and the transfer motor are mounted on the base frame. The transfer gear is mounted on the component base, and the rotation axis of the transfer gear extends vertically. The output shaft of the transfer motor has a third output gear that meshes with the transfer gear. The transfer bracket is vertically and coaxially mounted on the transfer gear, and the transfer bracket has a clamping sub-mechanism facing the model transfer container, which is used to clamp the model transfer container.

8. The photopolymerization 3D printing model separation and transfer mechanism according to claim 7, characterized in that: in, The transfer assembly also includes a lifting cylinder having a vertically extending output shaft, and the assembly base is disposed on the output shaft of the lifting cylinder.

9. The photopolymerization 3D printing model separation and transfer mechanism according to claim 7, characterized in that: in, The clamping submechanism includes a clamping base, a pair of clamping components, and a clamping trigger rod. The pair of clamping components are both horizontally and symmetrically arranged on the clamping base. The clamping assembly includes clamping arms and clamping claws that face the model transfer container and are hinged together. The clamping claws extend in an arc and form a lever mechanism based on the clamping arms. The two ends of the clamping claws are respectively designated as the active end and the driven end, with the driven end being closer to the model transfer container than the active end. The two ends of the clamping trigger rod are respectively hinged to the two active ends. When the model transfer container moves along a predetermined horizontal direction to collide with the clamping trigger rod, the driven ends of the pair of clamping arms rotate in opposite directions to clamp the model transfer container.

10. The photopolymerization 3D printing model separation and transfer mechanism according to claim 7, characterized in that: in, The base frame has an integrated mounting sub-frame and a placement sub-frame. The separation unit is mounted on the mounting sub-frame, and the placement sub-frame is used to place the model cleaning container, in which the 3D printed model is cleaned.

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