CN212737078U

CN212737078U - Rotation type 3D printing device

Info

Publication number: CN212737078U
Application number: CN202021186647.5U
Authority: CN
Inventors: 姚小霞
Original assignee: Zhuhai Sailner 3D Technology Co Ltd
Current assignee: Zhuhai Sailner 3D Technology Co Ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-03-19
Anticipated expiration: 2030-06-23

Abstract

The application discloses a rotary 3D printing device, which comprises a rotary platform, a cross beam, a printing head unit and a leveling unit; the rotary platform is provided with a printing area, and the cross beam is arranged above the rotary platform; the printing head unit is movably arranged on the cross beam and is used for ejecting materials to a printing area of the rotating platform; the leveling unit is arranged on the cross beam and used for leveling the material and taking away redundant material; wherein the leveling unit comprises at least one rotatable leveling roller having a length less than a radial width of a print zone of the rotary platen. The length of this application through making the levelling roller is less than the radial width in rotary platform's printing district to avoided because beat printer head unit and remove the influence crossbeam focus and then arouse that the levelling roller height change leads to the levelling roller and the shaping layer surface that has solidified to produce the problem of collision.

Description

Rotation type 3D printing device

Technical Field

The application relates to the technical field of 3D printing, concretely relates to rotation type 3D printing device.

Background

Referring to fig. 1, a conventional rotary 3D inkjet printer generally includes a rotary platform 1', a beam 2', a printing head 3', and leveling rollers 4'. During the relative movement of the print head 3 'on the cross beam 2' with respect to the rotating platform 1', the print head 3' ejects the material onto the rotating platform 1', the material rotates with the rotating platform 1', and then is leveled and carries away the excess material by the leveling rollers 4 'which are also loaded on the cross beam 2' and rotate themselves, and then the material solidifies to form the shaped layer. As the cross beam 2 'is gradually distanced from the rotating platform 1' in the vertical direction, the molding layers are laminated to form the target model.

Since the print head 3 'has a certain weight, but the beam 2' of the prior art is not rigid enough, when the print head 3 'moves back and forth on the beam 2', the center of gravity of the beam 2 'is affected to bend, which causes a change in the height of the leveling roller 4' also mounted on the beam 2', and since the length of the leveling roller 4' is much greater than the width of the primary material ejected by the print head 3', the change may cause the leveling roller 4' to collide with the surface of the solidified molding layer.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems of the prior art, the present application provides a rotary 3D printing device capable of avoiding the collision between the leveling roller and the surface of the solidified forming layer.

In order to achieve the above purpose, the following technical solutions are specifically adopted in the present application:

the application provides rotation type 3D printing device, this rotation type 3D printing device includes:

a rotating platform having a print zone;

the cross beam is arranged above the rotating platform;

the printing head unit is movably arranged on the cross beam and is used for ejecting materials to a printing area of the rotating platform;

the leveling unit is arranged on the cross beam and used for leveling the material and taking away redundant material;

wherein the leveling unit comprises at least one rotatable leveling roller having a length less than a radial width of a print zone of the rotary platen.

Preferably, the leveling unit further comprises a fixed beam disposed on the cross beam, and the fixed beam has a length extending in the same radial direction as the rotary platform; the leveling roller is capable of reciprocating on the fixed beam in an extending direction of a length of the fixed beam.

Preferably, when the leveling rollers move from one end far away from the center of the rotating platform to one end close to the center of the rotating platform along the extending direction of the length of the fixed beam, the rotation speed of the leveling rollers is changed from large to small.

Preferably, the number of the leveling rollers is at least two, each leveling roller is sequentially arranged along the radial direction of the rotating platform, and each leveling roller can independently work.

Preferably, the leveling rollers closer to the center of the rotating platform rotate at a slower rate than the leveling rollers further from the center of the rotating platform.

Preferably, the printing head unit comprises jet holes, the maximum width among the jet holes is W along the moving direction of the printing head unit, the length of each leveling roller is L1, and the length is more than or equal to 0 and less than or equal to L1-W and less than or equal to 5 mm.

Preferably, the length of the leveling roller extends in a direction perpendicular to a moving direction of the print head unit.

Preferably, the rotary 3D printing device further comprises a lifting unit, the beam is disposed on the lifting unit, and the lifting unit is configured to drive the beam to move along a direction perpendicular to a printing area plane of the rotating platform.

Preferably, the lifting unit comprises a first transmission part, a second transmission part and a motor, two ends of the cross beam are respectively connected with the first transmission part and the second transmission part, and the motor is used for driving the first transmission part and the second transmission part to perform synchronous transmission, so that the cross beam moves along the direction perpendicular to the printing area plane of the rotary platform.

Preferably, the lifting unit further comprises a synchronizing assembly, the synchronizing assembly is respectively connected with the first transmission part and the second transmission part, and the motor is connected with the first transmission part.

Preferably, the rotary 3D printing device further comprises a weight block, and the weight block is disposed at one end of the cross beam far away from the printing head unit.

Preferably, the rotary 3D printing apparatus further includes a curing unit disposed in a radial direction of the rotary platform, and the printing head unit, the leveling unit, and the curing unit are sequentially disposed along a rotation direction of the rotary platform.

Preferably, the extension direction of the length of the curing unit and the moving direction of the print head unit form an angle of 180 degrees.

Preferably, the curing unit is disposed on the cross member.

Preferably, the curing unit comprises a curing lamp comprising at least two radiation segments, each radiation segment being capable of operating independently.

Preferably, each of the radiating segments has a length of L2; the printing head unit comprises jet holes, the maximum width among the jet holes is W along the moving direction of the printing head unit, and L2-W is more than or equal to 0 and less than or equal to 5 mm.

Preferably, the curing unit comprises at least one curing lamp, the length of the curing lamp is L3, the printing head unit comprises jet holes, the maximum width among the jet holes along the moving direction of the printing head unit is W, and the maximum width is more than or equal to 0 and less than or equal to L3-W and less than or equal to 5 mm.

Preferably, the curing unit includes one of the curing lamps, which is movable in a radial direction of the rotary stage.

Preferably, the curing unit comprises at least two curing lamps, each curing lamp is sequentially arranged along the radial direction of the rotating platform, and each curing lamp can respectively and independently work.

Compared with the prior art, the rotary 3D printing device comprises a rotary platform, a beam, a printing head unit and a leveling unit, wherein the rotary platform is provided with a printing area, the beam is arranged above the rotary platform, the printing head unit is movably arranged on the beam and used for spraying a material to the printing area of the rotary platform, and the leveling unit is arranged on the beam and used for leveling the material and taking away redundant material; the length of this application through making the levelling roller is less than the radial width in rotary platform's printing district to avoided because beat printer head unit and remove the influence crossbeam focus and then arouse that the levelling roller height change leads to the levelling roller and the shaping layer surface that has solidified to produce the problem of collision.

Drawings

Fig. 1 is a top view of a rotary 3D printing apparatus provided in the prior art.

Fig. 2 is a top view of a rotary 3D printing device according to an embodiment of the present application.

Fig. 3 is a top view of a rotary 3D printing apparatus according to another embodiment of the present application.

Fig. 4 is a front view of a rotary 3D printing device provided in an embodiment of the present application.

Fig. 5 is a front view of a rotary 3D printing device according to another embodiment of the present application.

Fig. 6 is a front view of a rotary 3D printing device according to another embodiment of the present application.

Fig. 7 is a front view of a rotary 3D printing apparatus according to still another embodiment of the present application.

Fig. 8 is a front view of a rotary 3D printing apparatus according to still another embodiment of the present application.

Fig. 9 is a front view of a rotary 3D printing apparatus according to still another embodiment of the present application.

Fig. 10 is a front view of a rotary 3D printing apparatus according to still another embodiment of the present application.

Fig. 11 is a front view of a rotary 3D printing apparatus according to still another embodiment of the present application.

The attached drawings are as follows:

1. rotating the platform; 2. a cross beam; 3. a print head unit; 4. a leveling unit; 41. a fixed beam; 42. leveling rollers; 421. a first leveling roller; 422. a second leveling roll; 5. a lifting unit; 51. a first transmission unit; 52. a second transmission part; 53. a motor; 54. a synchronization component; 6. a balancing weight; 7. a curing unit; 70. a curing light; 701. a radiation section; 100. a printing area; 200. a buffer area.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present application, it should be understood that the terms "upper" and "lower" used in the description of the embodiments of the present application are used in a descriptive sense only and not for purposes of limitation. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The rotary 3D printing device is a rapid forming device utilizing technologies such as photocuring and lamination, is basically the same as a common 3D printing working principle, and realizes layer-by-layer printing through printing control data, and a thin layer is stacked to finally form a target object.

Referring to fig. 2, an embodiment of the present application discloses a rotary 3D printing apparatus, which includes a rotary platform 1, a beam 2, a printing head unit 3, and a leveling unit 4, wherein the rotary platform 1 has a printing area 100 and a buffer area 200, the buffer area 200 is located at the center of the rotary platform 1, and the printing area 100 is disposed on the upper surface of the rotary platform 1 along the circumferential direction of the buffer area 200, and has a radial width R. The beam 2 is disposed above the rotary platform 1, and the print head unit 3 is movably disposed on the beam 2 and used for ejecting materials to the printing area 100 of the rotary platform 1. The leveling unit 4 is disposed on the cross beam 2 and is used for leveling the material on the rotating platform 1 and taking away the redundant material.

In printing, the printing head unit 3 ejects a material onto the rotary table 1 during the relative movement of the rotary table 1 on the cross beam 2, the leveling unit 4 levels the material on the rotary table 1 and takes away excess material, and then the material is solidified to form a molded layer. As the beam 2 is gradually moved away from the rotating platform 1 in the vertical direction, the molding layers are laminated to form a target model.

Specifically, the leveling unit 4 includes a fixed beam 41 and a rotatable leveling roller 42, the fixed beam 41 is provided to the cross beam 2, and an extending direction of a length of the fixed beam 41 and a moving direction of the print head unit 3 have an angle greater than 0. The leveling rollers 42 are connected to the fixed beam 41 by a connecting member, and are capable of reciprocating on the fixed beam 41 in the extending direction of the length of the fixed beam 41 to level the material that is reciprocated and ejected on the cross beam 2 by the head unit 3. Wherein the length L1 of the leveling roller 42 is smaller than the radial width R of the printing zone 100 of the rotary table 1.

Referring to fig. 1, since the print head unit 3 'has a certain weight, but the beam 2' of the prior art is not rigid enough, when the print head unit 3 'moves back and forth on the beam 2', the center of gravity of the beam 2 'is affected, which causes the height of the leveling roller 4' loaded on the beam 2 'to change, and since the length of the leveling roller 4' is not less than the radial width of the printing area of the rotary platform 1', i.e. the leveling roller 4' is much greater than the width of the primary material sprayed by the print head unit 3', the change may cause the leveling roller 4' to collide with the surface of the solidified molding layer.

The length L1 of the leveling roller 42 is smaller than the radial width R of the printing area 100 of the rotary platform 1, so that the length of the leveling roller 42 is limited, and the problem that the leveling roller 42 collides with the surface of a solidified forming layer due to the fact that the gravity center of the cross beam 2 is influenced by the movement of the printing head unit 3 on the cross beam 2 and the height of the leveling roller 42 is caused can be solved.

Since the head unit 3 needs a certain buffer area for reciprocating on the beam 2, a buffer area 200 is provided in the center of the rotary table 1, that is, a non-printing area exists on the rotary table 1.

Further, when the leveling rollers 42 are moved on the fixed beam 41 from the end away from the center of the rotation platform 1 to the end close to the center of the rotation platform 1, the rotation rate of the leveling rollers 42 is changed from large to small. Since the linear velocity of a point on the rotary table 1 closer to the center of the rotary table 1 is smaller and the linear velocity of a point on the rotary table 1 farther from the center is larger, in order to achieve a better leveling effect, the rotation rate of the leveling rollers 42 is smaller when the leveling rollers 42 are located inside the rotary table 1 and the rotation rate of the leveling rollers 42 is larger when the leveling rollers 42 are located outside the rotary table 1.

Based on the above embodiment, the present application further discloses another specific implementation manner, and the difference between the present embodiment and the above embodiment is that, referring to fig. 3 and fig. 4, in the present embodiment, two leveling rollers 42 are provided, which are a first leveling roller 421 and a second leveling roller 422, respectively. The first leveling roller 421 and the second leveling roller 422 are connected to the fixed beam 41 in this order along the extending direction of the length of the fixed beam 41, and the leveling rollers 42 operate independently. When the material ejected from the head unit 3 passes through the first leveling roller 421 and does not pass through the second leveling roller 422, the first leveling roller 421 rotates to perform leveling work, and the second leveling roller 422 does not rotate. When the material ejected from the head unit 3 passes through the second leveling roller 422 and does not pass through the first leveling roller 421, the second leveling roller 422 rotates to perform leveling work, and the first leveling roller 421 does not rotate. Of course, the first leveling roller 421 and the second leveling roller may rotate at the same time or not rotate at the same time. In other embodiments, the first leveling roller 421 and the second leveling roller 422 may be disposed above the rotating platform 1 in sequence along the radial direction of the rotating platform 1 in other manners, and are not necessarily connected to the fixed beam 41.

Further, the rotation rate of the first leveling roller 421 is smaller than the rotation rate of the second leveling roller 422. Since the linear velocity of a point on the rotary table 1 closer to the center of the rotary table 1 is smaller and the linear velocity of a point farther from the center of the rotary table 1 is larger, the rotation rate of the first leveling roller 421 closer to the center of the rotary table 1 is smaller than the rotation rate of the second leveling roller 422 in order to achieve a better leveling effect.

In the present embodiment, only two leveling rollers are provided. It is understood that in other embodiments, the number of the leveling rollers may be 3 or more than 3, and the specific number of the leveling rollers depends on the length of the leveling unit 4 and the length of each leveling roller.

Further, the length L1 of each leveling roller is 0 to 5 mm larger than the maximum width between orifices on the head unit 3 arranged in the moving direction of the head unit 3. Since the maximum width between the orifices in the head unit 3 arranged in the moving direction of the head unit 3 can be approximately expressed by the width W of the head unit 3 in the radial direction of the rotary table 1, 0. ltoreq. L1-W. ltoreq.5 mm. That is, the length of each leveling roller is equal to or slightly greater than the maximum width between the orifices on the head unit 3 arranged in the moving direction of the head unit 3. In this way, the leveling rollers 2 only level the material ejected by the print head unit 3, which solves the problem that the leveling rollers collide with the surface of the solidified molded layer due to the influence of the movement of the print head unit 3 on the cross beam 2 on the height of the leveling rollers 422 also mounted on the cross beam 2.

In the present embodiment, the extending direction of the lengths of the first leveling roller 421 and the second leveling roller 422 is perpendicular to the moving direction of the print head unit 3, which is provided to facilitate the installation and design of the structure. It is understood that, in other embodiments, the extending direction of the lengths of the first leveling roller 421 and the second leveling roller 422 may be at any angle larger than 0 with respect to the moving direction of the print head unit 3, as long as the leveling rollers can level the material ejected by the print head unit 3 and the leveling rollers do not interfere with the print head unit 3.

On the basis of the above embodiment, the present application further discloses another specific implementation manner, and the difference between the present embodiment and the above embodiment is that, referring to fig. 5, the rotary 3D printing apparatus further includes a lifting unit 5, the beam 2 is movably disposed on the lifting unit 5, and the lifting unit 5 can drive the beam 2 to move along a direction perpendicular to the plane of the printing area of the rotary platform 1.

Specifically, the lifting unit 5 includes a first transmission part 51, a second transmission part 52, a motor 53, and a synchronizing assembly 54. Both ends of the beam 2 are respectively connected with the first transmission part 51 and the second transmission part 52, and the synchronizing assembly 54 is respectively connected with the first transmission part 51 and the second transmission part 52. The motor 53 is connected to the first transmission part 51. The first transmission part 51 is driven to rotate by the motor 53, and then the second transmission part 52 is driven to rotate by the synchronizing component 54, so that the first transmission part 51 and the second transmission part 52 synchronously rotate, and the cross beam 2 can realize lifting movement.

Further, the first transmission part 51 and the second transmission part 52 may both include a transmission member, a guide member, the transmission member may include, for example, a lead screw, and the guide bar may include, for example, a guide bar or a guide rail, etc. The synchronizing assembly 54 includes a first synchronizing wheel disposed on the first transmission portion 51, a second synchronizing wheel disposed on the second transmission portion 52, and a belt, wherein two ends of the belt are respectively sleeved on the first synchronizing wheel and the second synchronizing wheel. The power is transmitted from the first transmission part 51 to the second transmission part 52 through the synchronizing assembly 54, so that the second transmission part 52 and the first transmission part 51 are driven to rotate synchronously. It should be noted that the synchronizing assembly 54 is not limited to the synchronizing wheel and belt described in the present embodiment, and may be other assemblies that can bring about synchronization.

In this embodiment, only one motor is provided, and the first transmission portion 51 is driven by the motor to rotate, and then the second transmission portion 52 is driven by the first transmission portion 51 to rotate synchronously. It is understood that in other embodiments, the first transmission part 51 and the second transmission part 52 may be both connected to a motor, and the two motors respectively provide power to lift the cross beam, and in this case, only the first transmission part 51 and the second transmission part 52 need to be synchronously driven to keep the balance of the cross beam 2.

Based on the above embodiment, the present application further discloses another specific implementation manner, and the difference between the present embodiment and the above embodiment is that, referring to fig. 6, in the present embodiment, the rotary 3D printing apparatus further includes a weight block 6, and the weight block 6 is disposed at one end of the cross beam 2 away from the printing head unit 3. The gravity center of the beam 2 is adjusted through the balancing weight 6, so that the influence of the movement of the printing head unit 3 on the height of the beam 2 is reduced, the printing precision and the leveling precision are improved, and the collision between a leveling roller and the surface of a solidified forming layer is avoided.

In the present embodiment, only one weight 6 is provided. It is understood that in other embodiments, the number of the weight blocks 6 may be two or more. This application does not do specific restriction to the quantity and the weight of balancing weight, and is different to rotation type 3D printing device's particular case, and the quantity and the weight of balancing weight 6 can be different, as long as guarantee that balancing weight 6 can offset in advance the altitude variation of beating printer head unit 3 and removing crossbeam 2 that arouses can. And this application does not do specific restriction to shape, the material of balancing weight 6 yet, certainly, in order to reduce the space that balancing weight 6 occupied and consider the cost problem, need make balancing weight 6's density big to it is small, and balancing weight 6's material is with low costs, the shape is pleasing to the eye.

Based on the above embodiment, the present application further discloses another specific implementation manner, please refer to fig. 7, in which in this embodiment, the rotary 3D printing apparatus further includes a lifting unit 5 and a weight block 6. Crossbeam 2 activity sets up in lift unit 5, beats printer head unit 3 activity and sets up in the one end of crossbeam 2, and balancing weight 6 sets up in the other end of crossbeam 2. The beam 2 can be driven by the lifting unit 5 to move in a direction perpendicular to the plane of the printing area of the rotary platform 1; through the setting of balancing weight 6, can adjust the focus of crossbeam 2.

Specifically, the lifting unit 5 includes a first transmission part 51, a second transmission part 52, a motor 53, and a synchronizing assembly 54. Both ends of the beam 2 are respectively connected with the first transmission part 51 and the second transmission part 52, and the synchronizing assembly 54 is respectively connected with the first transmission part 51 and the second transmission part 52. The motor 53 is connected to the first transmission part 51.

Based on the above embodiment, the present application further discloses another specific implementation manner, and the difference between the present embodiment and the above embodiment is that, referring to fig. 8, in the present embodiment, the rotary 3D printing apparatus further includes a curing unit 7, the curing unit 7 is disposed in a radial direction of the rotary platform 1, and the print head unit 3, the leveling unit 4, and the curing unit 7 are sequentially disposed along a rotation direction of the rotary platform 1. In printing, the material ejected from the print head unit 3 is leveled by the leveling unit 4 and then cured by the curing unit 7 along the rotation direction of the rotary table 1.

Specifically, the extending direction of the length of the curing unit 7 and the moving direction of the print head unit 3 form an angle of 180 degrees, and the extending direction of the length of the leveling unit 4 is perpendicular to the moving direction of the print head unit 3 and the extending direction of the length of the curing unit 7. The arrangement is convenient for the installation and design of the structure and the positioning. It is understood that, in other embodiments, the included angle between the extending direction of the length of the curing unit 7, the extending direction of the length of the leveling unit 4, and the moving direction of the print head unit 3 may be any other angle greater than 0, as long as the curing unit 7 can cure the material leveled by the leveling unit 4, and the curing unit 7, the leveling unit 4, and the print head unit 3 do not interfere with each other.

Further, a curing unit 7 is provided to the beam 2 for providing radiation to cure the material. Wherein, the radiation area of the curing unit 7 is not less than the printing area 100 of the rotary platform 1, and is used for curing the material leveled by the leveling unit 4. In other embodiments, the curing unit 7 may be disposed above the rotating platform 1 in other manners, and is not necessarily disposed on the beam 2.

Referring to fig. 9, the curing unit 7 includes a curing lamp 70, and the curing lamp 70 may include a plurality of radiation sections 701, and each radiation section 701 operates independently. When the material ejected by the print head unit 3 passes through only some of the radiation segments, then those radiation segments through which the material passes provide radiation and the other radiation segments do not provide radiation. Of course, the individual radiation sections can also be supplied with radiation simultaneously or without radiation simultaneously.

Further, the length L2 of each radiation segment 701 is 0 to 5 mm greater than the maximum width W between the orifices on the head unit 3 arranged in the moving direction of the head unit 3, i.e., the length of each radiation segment 701 is equal to or slightly greater than the maximum width between the orifices on the head unit 3 arranged in the moving direction of the head unit 3. In this way, the curing lamp 70 can only provide radiation to the material just ejected by the print head unit 3 for curing, thereby alleviating the problem that the performance of the cured molding layer may be affected by re-curing due to radiation.

In this embodiment, the curing light 70 includes only two radiation segments 701. It is understood that in other embodiments, the curing light may include three or more radiation segments, and the number of segments of the curing light 70 depends on the length of the curing light 70 and the length of each segment.

Referring to fig. 10, in another embodiment, the curing unit 7 may also include a plurality of curing lamps 70, and each curing lamp 70 operates independently. When the material ejected by the print head unit 3 passes through only some of the curing lamps 70, then those lamps through which the material passes provide radiation and the other lamps do not. Of course, the curing lamps 70 may also provide radiation simultaneously or not.

Further, the length L3 of each curing light 70 is 0 to 5 mm greater than the maximum width W between the orifices on the print head unit 3 arranged in the moving direction of the print head unit 3, that is, the length of each curing light 70 is equal to or slightly greater than the maximum width between the orifices on the print head unit 3 arranged in the moving direction of the print head unit 3. In this way, the curing lamp 70 can only provide radiation to the material just ejected by the print head unit 3 for curing, thereby alleviating the problem that the performance of the cured molding layer may be affected by re-curing due to radiation.

In the present embodiment, two curing lamps 70 are provided. It is understood that in other embodiments, the number of the curing lamps may be three or more, and the number of the curing lamps 70 depends on the length of the curing unit 7, i.e., the radial length of the printing area of the rotary platform 1 and the length of each curing lamp, and is not limited herein.

Referring to fig. 11, in another embodiment, the curing unit 7 includes a curing lamp 70, and the curing lamp 70 reciprocates along the extending direction of the length of the beam 2 to provide radiation to the material which is ejected while the print head unit 3 reciprocates on the beam 2, so as to cure the material.

Wherein the length L3 of the curing lamp 70 is 0 to 5 mm greater than the maximum width W between the orifices of the print head unit 3 arranged in the moving direction of the print head unit 3. That is, the length of the curing lamp 70 is equal to or slightly greater than the maximum width between the orifices of the print head unit 3 arranged along the moving direction of the print head unit 3, so that the curing lamp 70 can cure only the material just ejected by the print head unit 3 by providing radiation thereto, and the problem that the performance may be affected by re-curing the cured molding layer by radiation is alleviated.

The shapes of the rotary table 1, the head unit 3, and the leveling unit 4 in the rotary 3D printing apparatus are not limited to those shown above.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A rotary 3D printing device, comprising:

a rotating platform having a print zone;

the cross beam is arranged above the rotating platform;

2. The rotary 3D printing device according to claim 1, wherein the leveling unit further comprises a fixed beam disposed at the cross beam and having a length extending in the same radial direction as the rotary platform;

the leveling roller is capable of reciprocating on the fixed beam in an extending direction of a length of the fixed beam.

3. The rotary 3D printing device of claim 2, wherein the rate of rotation of the leveling roller is varied from large to small as the leveling roller moves from an end distal to the center of the rotary platen to an end proximal to the center of the rotary platen along the extension of the length of the fixed beam.

4. The rotary 3D printing device according to claim 1, wherein the leveling rollers are provided in at least two numbers, each of the leveling rollers is provided in sequence in a radial direction of the rotary table, and each of the leveling rollers is capable of operating independently.

5. The rotary 3D printing device of claim 4, wherein the leveling rollers near the center of the rotary platen rotate at a rate less than the leveling rollers away from the center of the rotary platen.

6. The rotary 3D printing device of claim 4, wherein the printhead unit includes orifices, a maximum width W between the orifices along a direction of movement of the printhead unit, a length of each of the leveling rollers L1, 0 ≦ L1-W ≦ 5 mm.

7. The rotary 3D printing device according to claim 1, wherein the length of the leveling roller extends in a direction perpendicular to the direction of movement of the print head unit.

8. The rotary 3D printing device according to claim 1, further comprising a lifting unit, wherein the beam is disposed on the lifting unit, and the lifting unit is configured to drive the beam to move in a direction perpendicular to a printing area plane of the rotary platform.

9. The rotary 3D printing device according to claim 8, wherein the lifting unit comprises a first transmission part, a second transmission part and a motor, two ends of the beam are respectively connected to the first transmission part and the second transmission part, and the motor is configured to drive the first transmission part and the second transmission part to perform synchronous transmission, so that the beam moves in a direction perpendicular to a printing area plane of the rotary platform.

10. The rotary 3D printing device according to claim 9, wherein the lifting unit further comprises a synchronizing assembly, the synchronizing assembly is connected to the first transmission part and the second transmission part, respectively, and the motor is connected to the first transmission part.

11. The rotary 3D printing device of claim 1, further comprising a weight disposed at an end of the cross beam distal from the printhead unit.

12. The rotary 3D printing device according to claim 1, further comprising a curing unit disposed in a radial direction of the rotary platform, the print head unit, the leveling unit and the curing unit being disposed in sequence along a rotation direction of the rotary platform.

13. The rotary 3D printing device according to claim 12, wherein the length of the curing unit extends at an angle of 180 degrees to the direction of movement of the print head unit.

14. The rotary 3D printing device of claim 13, wherein the curing unit is disposed on the beam.

15. The rotary 3D printing device according to claim 12, wherein the curing unit comprises a curing lamp comprising at least two radiation segments, each radiation segment being independently operable.

16. The rotary 3D printing device of claim 15, wherein each of the radiating segments has a length of L2; the printing head unit comprises jet holes, the maximum width among the jet holes is W along the moving direction of the printing head unit, and L2-W is more than or equal to 0 and less than or equal to 5 mm.

17. The rotary 3D printing device according to claim 12, wherein the curing unit comprises at least one curing light having a length L3, the printhead unit comprises orifices, the maximum width between the orifices in the direction of movement of the printhead unit is W, 0 ≦ L3-W ≦ 5 mm.

18. The rotary 3D printing device according to claim 17, wherein the curing unit comprises one of the curing lamps, the curing lamp being movable in a radial direction of the rotary platform.

19. The rotary 3D printing device according to claim 17, wherein the curing unit comprises at least two curing lamps, each curing lamp is arranged in sequence along a radial direction of the rotary platform, and each curing lamp can work independently.