Printing device

Abstract

The utility model discloses a printing device which comprises a base frame, a printing structure and a collecting structure, a resin groove is installed on the base frame, the printing structure comprises a first lifting mechanism and a printing platform, the first lifting mechanism is connected with the base frame, and the printing platform is installed at the driving end of the first lifting mechanism. The first lifting mechanism drives the printing platform to move in the direction close to or away from the bottom face of the resin groove. The collecting structure is arranged on one side of the base frame; the first lifting mechanism can drive the printing platform to ascend to a preset position, and the collecting end of the collecting structure moves to the preset position so as to move the printing platform out. According to the structure, collection of the printing platform of the 3D printing equipment can be achieved, automatic piece collection operation is achieved by setting operation steps in advance, time can be saved, and the printing efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing machinery technical field, concretely relates to a printing device. BACKGROUND

[0002] Stereolithography is the first commercially available 3D printing technology. This technology uses ultraviolet laser to accurately cure the cross section of photopolymer, which is converted from fluid to solid. The part is directly built from CAD data layer by layer into prototype, investment casting model, tool and end-use parts. Once the SLA printing process is completed, the SLA part will be cleaned in the solution to remove the uncured resin remaining on the surface of the part. Then, the cleaned part is cured in the ultraviolet light curing oven.

[0003] In the process of photocuring 3D printing under SLA process, the quantitative coating of resin is realized by the settlement of the printing platform and the movement of the coating system, the printing platform is always immersed in the resin, after printing is completed, printing needs to be paused, and the part is taken out, so that continuous operation cannot be realized, and the SLA process is not conducive to the automatic production of 3D printing equipment. UTILITY MODEL CONTENTS

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defects that in the process of photocuring 3D printing under SLA process, the quantitative coating of resin is realized by the settlement of the printing platform and the movement of the coating system, the printing platform is always immersed in the resin, after printing is completed, printing needs to be paused, and the part is taken out, so that continuous operation cannot be realized, and the SLA process is not conducive to the automatic production of 3D printing equipment.

[0005] Therefore, the utility model provides a printing device, which comprises:

[0006] A base frame is provided with a resin tank;

[0007] A printing structure comprises a first lifting mechanism and a printing platform, the first lifting mechanism is connected with the base frame, the printing platform is installed at the driving end of the first lifting mechanism, and the first lifting mechanism drives the printing platform to move in the direction close to or away from the bottom surface of the resin tank;

[0008] A receiving structure is arranged on one side of the base frame;

[0009] The first lifting mechanism can drive the printing platform to rise to a predetermined position, and the receiving end of the receiving structure moves to the predetermined position to move the printing platform out.

[0010] Optionally, the printing structure further comprises a table support assembly; a supporting surface is arranged on the first lifting mechanism; and the table support assembly comprises:

[0011] a platform support plate arranged on the support surface;

[0012] a suction accessory embedded on the surface of the platform support plate, the suction accessory being capable of suctioning the printing platform on the platform support plate.

[0013] Optionally, the platform support plate is provided with a plurality of leveling holes around the periphery thereof.

[0014] The table support assembly further comprises a leveling member inserted into the leveling hole, the leveling member abutting against the support surface.

[0015] Optionally, the platform support plate is provided with a positioning member at the end thereof away from the collection structure; the positioning member is used for positioning the printing platform on the platform support plate.

[0016] Optionally, the first lifting mechanism comprises a platform bracket and a first lifting assembly, the first lifting assembly being connected to the base frame, the platform bracket being mounted on the first lifting assembly, and the first lifting assembly driving the platform bracket to lift.

[0017] Optionally, the collection structure comprises:

[0018] a base plate arranged on the base frame;

[0019] a support frame connected to the base plate;

[0020] a linear motion assembly arranged on the support frame, the linear motion assembly being provided with a connecting block;

[0021] a collection member mounted on the connecting block;

[0022] The linear motion assembly is capable of driving the connecting block to move the collection member in the direction close to or away from the printing platform.

[0023] Optionally, the printing platform is provided with a clamping hole at the end thereof close to the collection member, and the collection member is provided with a clamping portion corresponding to the clamping hole.

[0024] The collection member has the clamping portion clamped in the clamping hole to drive the platform support plate to move.

[0025] Optionally, the collection structure further comprises a second lifting assembly, the second lifting assembly comprising:

[0026] a telescopic rod, one end of the telescopic rod being connected to the support frame and the other end being connected to the base plate;

[0027] A lifting motor is installed on the support frame, and an output end of the lifting motor is connected with a lifting rod which penetrates the support frame and is connected with the base plate;

[0028] The lifting motor drives the lifting rod to rotate to drive the support frame to lift.

[0029] Optionally, the printing device further comprises a resin coating structure, and the resin coating structure comprises:

[0030] Synchronous assemblies are installed on the base frame, and two synchronous assemblies are arranged on two sides of the printing platform.

[0031] Resin coating members are installed on the two synchronous assemblies respectively.

[0032] Driving members are arranged on the side of the printing platform away from the first lifting assembly, and output shafts at two ends of the driving members are connected with the synchronous assemblies respectively to drive the synchronous assemblies.

[0033] Optionally, the synchronous assembly comprises a first rotating wheel and a second rotating wheel, the first rotating wheel is arranged on the side of the base frame close to the driving member, the second rotating wheel is arranged on the side of the base frame close to the first lifting assembly, the driving member is connected with the first rotating wheel, and a transmission belt is sleeved on the first rotating wheel and the second rotating wheel.

[0034] The technical scheme has the following advantages:

[0035] 1. The printing device comprises a base frame, a printing structure and a collecting structure, a resin tank is installed on the base frame, the printing structure comprises a first lifting mechanism and a printing platform, the first lifting mechanism is connected with the base frame, the printing platform is installed on the driving end of the first lifting mechanism, the first lifting mechanism drives the printing platform to move in the direction close to or away from the bottom surface of the resin tank, the collecting structure is arranged on one side of the base frame, the first lifting mechanism can drive the printing platform to ascend to a predetermined position, and the collecting end of the collecting structure is moved to the predetermined position to move the printing platform out.

[0036] This structure can realize the collection of the printing platform of the 3D printing device, the operation steps are set in advance, the automatic operation of taking out the part is realized, time is saved, and the printing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0038] Figure 1 It is a schematic view of the overall structure of the printing device provided in the present application.

[0039] Figure 2 It is a schematic view of the structure of the printing structure provided in the present application.

[0040] Figure 3 It is a schematic view of the cooperation of the platform support plate and the printing platform provided in the present application.

[0041] Figure 4 It is a schematic view of the structure of the collecting structure provided in the present application.

[0042] Figure 5 It is a side view of the collecting structure provided in the present application.

[0043] Explanation of reference signs:

[0044] 1 - base frame;

[0045] 2 - printing structure; 21 - first lifting mechanism; 211 - platform bracket; 212 - first lifting assembly; 22 - table support assembly; 221 - platform support plate; 222 - positioning piece; 223 - suction accessory; 224 - leveling piece; 23 - printing platform; 231 - clamping hole;

[0046] 3 - collecting structure; 31 - base plate; 32 - support frame; 33 - linear motion assembly; 34 - connecting block; 35 - collecting piece; 351 - clamping part; 36 - second lifting assembly; 361 - telescopic rod; 362 - lifting motor;

[0047] 4 - resin coating structure; 41 - synchronous assembly; 411 - first rotating wheel; 412 - second rotating wheel; 413 - transmission belt; 42 - resin coating piece; 43 - driving piece. DETAILED DESCRIPTION

[0048] The technical solutions of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are some embodiments of the present application, but not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0049] In the description of the utility model, it is explained that, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the utility model, it is explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0051] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0052] Embodiment

[0053] The embodiment provides a printing device, as shown in the figure, comprising a base frame 1, a printing structure 2 and a collection structure 3. Figures 1 to 5

[0054] As shown in the figure, the printing device comprises a base frame 1, a printing structure 2 and a collection structure 3. Figures 1 to 5 ​As shown, the base 1 is a base, and a resin tank is arranged on the base 1. The printing structure 2 comprises a first lifting mechanism 21, a table support assembly 22 and a printing platform 23. The first lifting mechanism 21 is arranged on the top surface of the base 1. The first lifting mechanism 21 comprises a first lifting assembly 212 and a platform bracket 211. The first lifting assembly 212 comprises a lifting frame. A motor is installed at the top end of the lifting frame. The output end of the motor faces downward. A screw rod is vertically installed on the output end of the motor. A sliding block is arranged on the screw rod. The platform bracket 211 is L-shaped. The vertical part of the platform bracket 211 is fixed on the sliding block. The horizontal part of the platform bracket 211 is arranged above the resin tank. The top surface of the horizontal part of the platform bracket 211 is a support surface. The table support assembly 22 comprises a platform support plate 221, a suction accessory 223 and a leveling piece 224. The platform support plate 221 is placed on the support surface. Four leveling holes are arranged at the four corners of the platform support plate 221. The leveling piece 224 is arranged in each leveling hole. The leveling piece 224 is a combination of a leveling bolt and a leveling spring. Four leveling pieces 224 are respectively inserted into the four leveling holes. The platform support plate 221 is connected to the platform bracket 211 through the four leveling bolts and the leveling springs. The leveling operation of the platform support plate 221 can be realized by adjusting the leveling bolts. The platform support plate 221 and the printing platform 23 are kept in a horizontal state, thereby providing a basis for subsequent printing operation. A plurality of embedding holes are arranged on the top surface of the platform support plate 221. The suction accessory 223 is installed in each embedding hole. The suction accessory 223 is a magnet. Two positioning pieces 222 are protruded at one end of the platform support plate 221 close to the first lifting assembly 212.

[0055] As Figures 1 to 3As shown, the printing device further comprises a resin coating structure 4, which comprises a synchronous assembly 41, a resin coating member 42 and a driving member 43. The driving member 43 is a double-output-shaft stepper motor, which is fixed on the base frame 1 away from the first lifting assembly 212. The synchronous assembly 41 is provided with two synchronous assemblies 41, which are arranged on both sides of the two output shafts of the driving member 43. Take one of the synchronous assemblies 41 as an example. The synchronous assembly 41 comprises a first rotating wheel 411 and a second rotating wheel 412. The first rotating wheel 411 is fixed on the base frame 1 and connected with the output shaft of the driving member 43. The second rotating wheel 412 is fixed on the base frame 1 close to the first lifting assembly 212. The rotating axis of the first rotating wheel 411 is parallel to the rotating axis of the second rotating wheel 412. A transmission belt 413 is sleeved on the first rotating wheel 411 and the second rotating wheel 412. The two ends of the resin coating member 42 are fixed on the transmission belts 413 on both sides respectively.

[0056] When 3D printing is needed, the first lifting assembly 212 is started first. The first lifting assembly 212 drives the platform bracket 211 to rise to a suitable position. The leveling member 224 is adjusted to level the platform support plate 221 on the support surface. Then the printing platform 23 is laid flat on the top surface of the platform support plate 221 by abutting against the positioning member 222. Then the first lifting assembly 212 drives the platform support assembly 22 and the printing platform 23 to move downward into the resin tank. The external laser device controls the laser to move on the top surface of the printing platform 23 according to the predetermined track. The resin in the resin tank will harden after being contacted by the laser to form a layer of hard structure. The first lifting assembly 212 drives the platform support assembly 22 and the printing platform 23 to continue to move downward to make room for the next layer. At this time, the driving member 43 is started to drive the first rotating wheel 411 to reciprocate, thereby driving the resin coating member 42 to move back and forth between the first rotating wheel 411 and the second rotating wheel 412 through the transmission belt 413 to ensure that the thin coating of fresh liquid resin uniformly covers the object. Finally, the resin coating member 42 is reset, and the laser continues to track and form the next layer on the previous layer. The above steps are repeated to form a complete 3D printed part.

[0057] As shown in Figure 3 The leveling bolt is a countersunk bolt, and the platform support plate 221 is made of aluminum alloy material and is covered with a soft magnet. The screw hole on the platform support plate 221 is a countersunk hole. The top end of the leveling member 224 is lower than the top surface of the platform support plate 221, so that the platform support plate 221 has good flatness and prevents shaking during printing to cause printing defects. The printing platform 23 is designed as a perforated plate to print high-viscosity materials and increase the resin flow speed to improve the printing efficiency.

[0058] Specifically, as shown in Figure 4 and Figure 5As shown, the collection structure 3 is fixed on the base frame 1 away from the first lifting mechanism 21, and the collection structure 3 comprises a base plate 31, a support frame 32, a linear motion assembly 33 and a collection piece 35, and the second lifting assembly 36 comprises a telescopic rod 361 and a lifting motor 362. The base plate 31 is fixed on the base frame 1, the support frame 32 is arranged above the base plate 31, the support frame is connected with the four corner positions of the base plate 31 through the telescopic rod 361, the bottom end of the telescopic rod 361 is connected with the base plate 31, and the upper end is connected with the support frame 32, the linear motion assembly 33 is arranged on the top surface of the support frame 32, the linear motion assembly 33 uses a linear guide rail plus a stepping motor to realize the linear motion of the collection piece 35, a connecting block 34 is arranged on the linear motion assembly 33, the connecting block 34 is connected with the collection piece 35, and the linear motion assembly 33 can drive the connecting block 34 and the collection piece 35 to move in the direction close to or away from the printing platform 23. The lifting motor 362 is installed on the support frame 32, the output end of the lifting motor 362 faces the base plate 31, the output end of the lifting motor 362 is fixed with a lifting rod, the lifting rod penetrates through the support frame 32 and is connected with the base plate 31, and the lifting motor 362 drives the lifting rod to rotate and further drives the support frame 32 to lift. One end of the collection piece 35 close to the printing platform 23 is arranged in a fork shape and has two collection ends, and the two collection ends are provided with clamping portions 351, and one end of the printing platform 23 close to the collection piece 35 is provided with two clamping holes 231 corresponding to the clamping portions 351.

[0059] When it is necessary to remove the printing platform 23 on which the 3D printing model after printing is placed, the first lifting assembly 212 drives the printing platform 23 to rise to a predetermined position, the lifting motor 362 moves, the support frame 32 is driven to rise to a preset position through the rotation of the lifting rod, the linear motion assembly 33 drives the collection piece 35 to move towards the printing platform 23, until the clamping portion 351 is clamped in the clamping hole 231, the lifting motor 362 continues to operate, drives the lifting rod to rotate, and further drives the support frame 32 to continue to rise, until one end of the printing platform 23 close to the linear motion assembly is lifted first, until the printing platform 23 and the suction member 223 are separated, the linear motion assembly drives the printing platform 23 to move away from the side of the first lifting assembly 212, the printing platform 23 is taken out, and the work is completed. By using the above structure, the collection of the printing platform 23 of the 3D printing equipment can be realized, the operation steps are set in advance, the automatic operation of taking out the piece is realized, the time can be saved, and the printing efficiency is improved.

[0060] Specifically, one end of the clamping portion 351 close to the printing platform 23 is provided with an inclined guide surface, and the other end is a vertical limiting surface. During movement, the inclined guide surface facilitates the clamping of the clamping portion 351 into the clamping hole 231, and the vertical limiting surface can prevent the clamping portion from falling out of the clamping hole when the printing platform 23 is removed.

[0061] The use steps of the printing device are specifically as follows:

[0062] When 3D printing is needed, first, the first lifting assembly 212 is started, the first lifting assembly 212 drives the platform bracket 211 to rise to a suitable position, the leveling piece 224 is adjusted, the platform support plate 221 on the support surface is leveled, then the printing platform 23 is laid flat on the top surface of the platform support plate 221 by abutting against the positioning piece 222, then the first lifting assembly 212 drives the platform support assembly 22 and the printing platform 23 to move downwards into the resin groove, the external laser device controls the laser to move on the top surface of the printing platform 23 according to the predetermined track, the resin in the resin groove will harden after being contacted by the laser, forming a layer of hard structure, the first lifting assembly 212 drives the platform support assembly 22 and the printing platform 23 to continue to move downwards to make room for the next layer; at this time, the driving piece 43 is started, the first rotating wheel 411 is driven to reciprocate, and then the resin coating piece 42 is driven to move back and forth between the first rotating wheel 411 and the second rotating wheel 412 through the transmission belt 413, so that the fresh liquid resin thin coating is uniformly covered on the object, finally, the resin coating piece 42 is reset, the laser continues to track and forms the next layer on the previous layer. The above steps are repeated to form a complete 3D printed part.

[0063] Then, the first lifting assembly 212 drives the printing platform 23 to rise to a predetermined position, the lifting motor 362 moves, the support frame 32 is driven to rise to a preset position through the rotation of the lifting rod, the collecting piece 35 is driven to move towards the printing platform 23 by the linear motion assembly 33, until the clamping part 351 is clamped in the clamping hole 231, the lifting motor 362 continues to operate, drives the lifting rod to rotate, and then drives the support frame 32 to continue to rise, until the printing platform 23 is lifted towards the end of the linear motion module, until the printing platform 23 and the suction accessory 223 are separated, the linear motion module drives the printing platform 23 to move towards the side away from the first lifting assembly 212, the printing platform 23 is taken out, and the work is completed.

[0064] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation on the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A printing device, characterized by, The application relates to a resin printing device. The resin printing device comprises a base frame (1) on which a resin tank is mounted; a printing structure (2) comprising a first lifting mechanism (21) connected with the base frame (1) and a printing platform (23) mounted on the driving end of the first lifting mechanism (21), wherein the first lifting mechanism (21) drives the printing platform (23) to move in the direction of approaching or moving away from the bottom surface of the resin tank; and a collection structure (3) arranged on one side of the base frame (1). The first lifting mechanism (21) can drive the printing platform (23) to rise to a predetermined position, and the collection end of the collection structure (3) moves to the predetermined position to move the printing platform (23) out. The printing structure (2) further comprises a table support assembly (22); the first lifting mechanism (21) is provided with a supporting surface; the table support assembly (22) comprises a platform support plate (221) arranged on the supporting surface; and a suction accessory (223) embedded on the surface of the platform support plate (221), wherein the suction accessory (223) can suck the printing platform (23) to the platform support plate (221). The outer periphery of the platform support plate (221) is provided with a plurality of leveling holes; the table support assembly (22) further comprises a leveling piece (224) inserted into the leveling hole and abutting against the supporting surface.

2. The printing device according to claim 1, characterized by The end of the platform support plate (221) away from the collection structure (3) is provided with a positioning piece (222) for positioning the printing platform (23) on the platform support plate (221). The first lifting mechanism (21) comprises a platform bracket (211) and a first lifting assembly (212) connected with the base frame (1), wherein the platform bracket (211) is mounted on the first lifting assembly (212), and the first lifting assembly (212) drives the platform bracket (211) to lift. The collection structure (3) comprises a base plate (31) arranged on the base frame (1); a supporting frame (32) connected with the base plate (31); a linear motion assembly (33) arranged on the supporting frame (32) and provided with a connecting block (34); and a collection piece (35) mounted on the connecting block (34).

3. The printing device of claim 2, wherein, The linear motion assembly (33) can drive the connecting block (34) to drive the collection piece (35) to move in the direction of approaching or moving away from the printing platform (23). The end of the printing platform (23) close to the collection piece (35) is provided with a clamping hole (231), and the collection piece (35) is provided with a clamping part (351) corresponding to the clamping hole (231).

4. The printing device of claim 2, wherein, ​ 5. The printing device of claim 2, wherein, ​ 6. The printing device of claim 2, wherein, ​ ​ ​ ​ ​ ​ 7. The printing device of claim 6, wherein, ​ The collection piece (35) has the working state that the clamping part (351) is clamped in the clamping hole (231) to drive the platform support plate (221) to move.

8. The printing device of claim 6, wherein, The collection structure (3) further comprises a second lifting assembly (36), the second lifting assembly (36) comprises: A telescopic rod (361) is connected with the support frame (32) at one end and connected with the base plate (31) at the other end; A lifting motor (362) is installed on the support frame (32), and the output end of the lifting motor (362) is connected with a lifting rod, the lifting rod penetrates the support frame (32) and is connected with the base plate (31); Wherein, the lifting motor (362) drives the lifting rod to rotate to drive the support frame (32) to lift.

9. The printing device of claim 5, wherein, The printing device further comprises a resin coating structure (4), the resin coating structure (4) comprises: A synchronous assembly (41) is installed on the base frame (1), the synchronous assembly (41) is provided with two, two synchronous assemblies (41) are separately arranged on both sides of the printing platform (23); A resin coating piece (42) is installed on both ends of the synchronous assembly (41) on both sides respectively; A driving piece (43) is arranged on the side of the printing platform (23) away from the first lifting assembly (212), and the output shafts at both ends of the driving piece (43) are connected with the synchronous assemblies (41) respectively to drive the synchronous assemblies (41).

10. The printing device of claim 9, wherein, The synchronous assembly (41) comprises a first rotating wheel (411) and a second rotating wheel (412), the first rotating wheel (411) is arranged on the side of the base frame (1) close to the driving piece (43), the second rotating wheel (412) is arranged on the side of the base frame (1) close to the first lifting assembly (212), the driving piece (43) is connected with the first rotating wheel (411), and the first rotating wheel (411) and the second rotating wheel (412) are sleeved with a transmission belt (413).

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