CN218020176U

CN218020176U - Three-dimensional printer

Info

Publication number: CN218020176U
Application number: CN202221482314.6U
Authority: CN
Inventors: 谢平
Original assignee: Shenzhen Ruifeng Technology Co ltd
Current assignee: Shenzhen Ruifeng Technology Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-12-13
Anticipated expiration: 2032-06-13

Abstract

The utility model discloses a three-dimensional printer, three-dimensional printer includes: a frame; the trough is arranged on the frame; the printing platform is arranged on the material groove in a lifting manner; the optical-mechanical assembly is arranged on the rack in a lifting mode and located above the trough, and the optical-mechanical assembly is used for emitting light beams to irradiate the trough. The utility model discloses among three-dimensional printer's the technical scheme, with ray apparatus module installation in the top of silo and silo lift relatively to ray apparatus module accessible goes up and down to be close to or keep away from the silo, with the interval of adjusting ray apparatus module and source liquid level, thereby adjust and print the precision. Therefore, the three-dimensional printer can meet different printing precision requirements, and the use convenience of the three-dimensional printer is improved.

Description

Three-dimensional printer

Technical Field

The utility model relates to a three-dimensional inkjet printer technical field, in particular to three-dimensional inkjet printer.

Background

Three-dimensional printing is a technique of constructing an object by printing layer by layer using an adhesive material such as powdered metal, plastic, or photocurable resin on the basis of a digital model file.

The three-dimensional photo-curing forming method is an important branch of a three-dimensional printing technology, and comprises the steps of irradiating the surface of liquid photosensitive resin by utilizing laser with specific wavelength and intensity to cure a layer of resin in a specific area on the surface, descending a lifting platform for a certain distance after one layer of resin is cured, uniformly covering a layer of liquid resin on the cured layer by a coating scraper, irradiating and curing the next layer of resin by utilizing the laser, and repeating the steps to finally obtain a three-dimensional workpiece formed by stacking layers.

In the existing three-dimensional printer, the height position of a light source is fixed, so that the printing precision on the surface of liquid photosensitive resin cannot be adjusted, and different printing precision requirements are difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a three-dimensional printer aims at solving the technical problem who how to make three-dimensional printer satisfy the different printing precision demands.

In order to achieve the above object, the utility model provides a three-dimensional printer includes:

a frame;

the trough is arranged on the rack;

the printing platform is arranged on the material groove in a lifting manner;

and the optical-mechanical assembly is arranged on the rack in a lifting manner and is positioned above the trough, and the optical-mechanical assembly is used for emitting light beams to irradiate the trough.

Optionally, the three-dimensional printer further comprises a mounting frame and a screw rod assembly, the screw rod assembly is mounted on the rack, and a screw rod of the screw rod assembly extends along the height direction of the rack; the mounting rack is connected to a screw nut of the screw assembly so as to lift along with the screw nut; the optical-mechanical assembly is arranged on the mounting frame.

Optionally, the three-dimensional printer further comprises a handle handwheel connected to the top end of the screw rod.

Optionally, the three-dimensional printer further includes a locking assembly mounted to the frame, the locking assembly being close to an end of the screw, the locking assembly being configured to lock or unlock the screw.

Optionally, the three-dimensional printer further comprises a guide shaft mounted to the frame, the guide shaft extending along a height direction of the frame; the mounting bracket is provided with a guide hole, and the guide hole is in sliding fit with the guide shaft.

Optionally, the number of the guide shafts is multiple, and the multiple guide shafts are divided into two groups and respectively arranged on two sides of the optical-mechanical assembly; the number and the position of the guide holes on the mounting rack correspond to the guide shafts.

Optionally, the mounting frame comprises a mounting plate, a sliding block and a connecting rod, the guide hole is formed in the sliding block, the connecting rod connects the sliding block with the screw nut, the mounting plate is connected to the sliding block, and the mounting plate is provided with a light-transmitting hole; the ray apparatus subassembly install in the upper surface of mounting panel, just the play plain noodles of ray apparatus subassembly passes through the light trap orientation the silo.

Optionally, the mounting bracket further includes a connection folding rod, the connection folding rod includes a first rod segment and a second rod segment, the first rod segment extends along the height direction of the rack and is connected to the sliding block, the second rod segment extends along the transverse direction and is connected to the lower end of the first rod segment, and the mounting plate is connected to the top surface of the second rod segment.

Optionally, the three-dimensional printer further includes an indicator connected to the mounting bracket, the indicator extends in a transverse direction and is at the same height as the optical mechanical assembly, and the indicator is used for indicating the height of the optical mechanical assembly.

Optionally, in a movable range of the optical-mechanical assembly, a distance between the optical-mechanical assembly and the printing platform is set to be 200mm to 1000mm.

The utility model discloses among three-dimensional printer's the technical scheme, with ray apparatus module installation in the top of silo and silo lift relatively to ray apparatus module accessible goes up and down to be close to or keep away from the silo, with the interval of adjusting ray apparatus module and source liquid level, thereby adjust and print the precision. Therefore, the three-dimensional printer can meet different printing precision requirements, and the use convenience of the three-dimensional printer is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.

For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.

Fig. 1 is a schematic structural diagram of an embodiment of the three-dimensional printer of the present invention;

FIG. 2 is a schematic view of an assembly structure of an embodiment of the Midamble component and the screw rod component of the present invention;

fig. 3 is a schematic view of an assembly structure of another embodiment of the middle optical machine assembly and the screw rod assembly of the present invention.

Description of the reference numerals

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The utility model provides a three-dimensional printer.

The utility model discloses a three-dimensional printer is used for implementing three-dimensional printing technique, and three-dimensional printing technique is blue book with computer three-dimensional design model, through software layering dispersion and numerical control molding system, utilizes modes such as laser beam, hot melt nozzle to carry out the successive layer with special materials such as metal powder, ceramic powder, plastics, cell tissue and piles up cohering, and final stack shaping produces the emerging manufacturing technology of entity product. Different from the traditional manufacturing industry in which the raw materials are shaped and cut in a machining mode such as a die and a turn-milling mode to finally produce finished products, the three-dimensional printing technology changes a three-dimensional entity into a plurality of two-dimensional planes, and the materials are processed and overlapped layer by layer to produce, so that the manufacturing complexity is greatly reduced. Therefore, the digital manufacturing mode has the natural advantages of simple process, low customization cost, short production period and the like, and can be extended to a wider production crowd.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a three-dimensional printer according to the present invention. The utility model discloses a three-dimensional inkjet printer can include frame 10, fixed plate, silo 20, print platform 30, jack-up mechanism, get material subassembly and ray apparatus subassembly 40. The frame 10 is an integral frame of the three-dimensional printer; the fixed plate is installed in frame 10, and silo 20 is connected in the fixed plate, and silo 20 is used for holding source liquid. Print platform 30 liftable is installed in silo 20, print platform 30 and fixed plate sliding connection to go up and down in silo 20, print platform 30 is used for bearing the shaping part. The optical-mechanical assembly 40 generates laser light speed to irradiate source liquid, and the source liquid is solidified and formed on the printing platform 30. The jacking mechanism is arranged at the bottom of the material groove 20 and is used for jacking the formed workpiece after penetrating through the printing platform 30; the take-out assembly is slidably connected to the fixed plate and is used for scraping the formed workpiece from the printing platform 30.

In order to make this technical field personnel right the utility model discloses a three-dimensional printer has a more audio-visual understanding, will use specific implementation process as the example right the utility model discloses a three-dimensional printer's printing principle explains.

1: the optical-mechanical assembly 40 emits laser beams to irradiate source liquid in the trough 20, and the source liquid is solidified and formed on the printing platform 30 to obtain a formed part; 2: the printing platform 30 moves towards the bottom of the trough 20 until the jacking mechanism penetrates through the printing platform 30, and the jacking mechanism exerts force on the formed part to separate the formed part from the printing platform 30; 3: the take-off assembly sweeps across the printing platform 30 to scrape the molded part from the printing platform 30. And (4) repeating the steps 1 to 3 by the three-dimensional printer, thereby realizing the automatic production of the formed workpiece.

The opto-mechanical assembly 40 is elevationally mounted to the frame 10 above the trough 20 to be closer to or farther from the source liquid level in the trough 20, i.e., closer to or farther from the printing platform 30. The opto-mechanical assembly 40 may be a Digital Light Processing (DLP) assembly. The light-emitting surface of the optical-mechanical assembly 40 faces, the distance between the optical-mechanical assembly 40 and the liquid level of the source liquid is different, the obtained printing precision is also different, and therefore the obtained pixel size of the workpiece is also different. Therefore, by controlling the lifting height of the opto-mechanical assembly 40, a predetermined pixel size can be obtained.

For example, the opto-mechanical device 40 of model NQM is taken as an example to be matched with a 135mm lens. When the distance between the optical-mechanical assembly 40 and the liquid level of the source liquid is 317mm, namely the projection distance is 317mm, the obtained pixel size of the workpiece is 30um; when the distance between the optical mechanical assembly 40 and the liquid level of the source liquid is 571mm, namely the projection distance is 571mm, the pixel size of the obtained workpiece is 60um; when the distance between the optical-mechanical assembly 40 and the liquid level of the source liquid is 898mm, namely the projection distance is 898mm, the pixel size of the obtained workpiece is 100um. Different pixel sizes of workpieces can meet different user requirements, so that the using effect of the three-dimensional printer can be improved.

Specifically, in the movable range of the optical-mechanical assembly 40, the distance between the optical-mechanical assembly 40 and the printing platform 30 is set to be 200mm to 1000mm, that is, the maximum movable stroke of the optical-mechanical assembly 40 can be set to be 800mm, so that the minimum height and the maximum height of the optical-mechanical assembly 40 can be reasonably controlled, and the difficulty in mounting the optical-mechanical assembly 40 on the rack 10 is reduced.

The three-dimensional printer further includes a transmission mounted to the frame 10 for a user to apply power to the opto-mechanical assembly 40 to convert the power into up-and-down drive for the opto-mechanical assembly 40. The transmission device can be a gear-rack assembly or a belt-belt pulley assembly. For example, please refer to fig. 2 and fig. 3, fig. 2 is a schematic view of an assembly structure of an embodiment of the middle optical-mechanical assembly 40 and the screw assembly 60 of the present invention; fig. 3 is a schematic view of an assembly structure of another embodiment of the midrange module 40 and the screw rod module 60 of the present invention.

The three-dimensional printer further comprises a mounting rack 50 and a screw rod assembly 60, wherein the screw rod assembly 60 is mounted on the rack 10, and a screw rod of the screw rod assembly 60 extends along the height direction of the rack 10; the mounting bracket 50 is connected to the lead screw nut of the lead screw assembly 60 to be lifted with the lead screw nut; the opto-mechanical assembly 40 is mounted to the mounting bracket 50. By driving the lead screw of the lead screw assembly 60 to rotate forward or backward, the lead screw nut can be driven to ascend or descend, that is, the rotation of the screw is converted into the up-and-down movement of the lead screw nut. Compared with other transmission devices, the driving of the screw rod assembly 60 is easier to control, so that the screw rod nut can be stopped at a preset position more conveniently, namely, the optical-mechanical assembly 40 can be stopped at a preset height more accurately and reliably, and the height adjusting precision of the optical-mechanical assembly 40 is improved. The mounting bracket 50 can realize indirect fixation of the optical-mechanical assembly 40 and the screw nut, on one hand, the connection strength of the optical-mechanical assembly 40 and the screw nut can be improved, and on the other hand, more mounting areas can be provided for the optical-mechanical assembly 40 conveniently, so that the mounting stability of the optical-mechanical assembly 40 is improved.

The screw of the screw assembly 60 may be driven by a motor or manually. Illustratively, as shown in fig. 2 and 3, the three-dimensional printer further comprises a handle handwheel 61, and the handle handwheel 61 is connected to the top end of the screw rod. An operator can rotate the handle handwheel 61 by hand to rotate the screw, thereby improving the convenience of manually driving the screw. Install crank hand wheel 61 at the top of screw rod, can make things convenient for operating personnel directly to rotate crank hand wheel 61 from the top of screw rod to avoid being hindered by screw rod self.

Illustratively, as shown in fig. 2 and 3, the three-dimensional printer further includes an indicator 64 connected to the mounting bracket 50, the indicator 64 extends in a transverse direction and is at the same height as the opto-mechanical assembly 40, and the indicator 64 is used for indicating the height of the opto-mechanical assembly 40. The end of the indicator 64 forms a tip and is close to one of the vertical rods of the rack 10, and the vertical rod is provided with an indication scale capable of indicating the current height, and the height scale pointed by the indicator 64 is the current actual height of the opto-mechanical assembly 40 or the current distance between the opto-mechanical assembly 40 and the liquid level of the source liquid, so that an operator can directly determine the stop position of the opto-mechanical assembly 40 by reading the height indicated by the indicator 64, thereby improving the height control precision of the opto-mechanical assembly 40.

Illustratively, as shown in fig. 2 and 3, the three-dimensional printer further comprises a locking assembly 62 mounted to the frame 10, the locking assembly 62 is near an end of the screw, and the locking assembly 62 is used for locking or unlocking the screw. The locking assembly 62 includes two clamp blocks that move relative to each other to clamp the screw and prevent rotation of the screw. When the opto-mechanical assembly 40 moves to the predetermined height position, the operator can operate the locking assembly 62 to lock the screw to prevent the screw from continuing to rotate, so that the opto-mechanical assembly 40 can stably stay at the predetermined position. Because the screw nut is sleeved on the screw rod to move, the locking assembly 62 is close to the end part of the screw rod to avoid the movement path of the screw nut, so that the screw nut can move smoothly.

Illustratively, as shown in fig. 2 and 3, the three-dimensional printer further includes a guide shaft 63 mounted to the frame 10, the guide shaft 63 extending in a height direction of the frame 10; the mounting bracket 50 is provided with a guide hole, and the guide hole is in slidable fit with the guide shaft 63. The guide shaft 63 limits the lateral movement of the mounting bracket 50, i.e., the opto-mechanical assembly 40, thereby preventing lateral shifting of the opto-mechanical assembly 40 during further lifting and lowering. The guide shaft 63 and the guide hole may be fitted through a linear bearing to reduce friction between the guide shaft 63 and the mounting bracket 50.

The number of the guide shafts 63 may be one or more, and is not limited herein. For example, as shown in fig. 2 and fig. 3, the number of the guide shafts 63 is multiple, and the multiple guide shafts 63 are divided into two groups and respectively disposed on two sides of the opto-mechanical assembly 40; the number and position of the guide holes on the mounting bracket 50 correspond to the guide shafts 63. The number of the guide shafts 63 may be 4, and the guide shafts are respectively arranged at 4 corners of the mounting bracket 50. The optical-mechanical assembly 40 is installed in the middle of the mounting frame 50, so that the mounting frame 50 can be transversely limited from a plurality of positions, and the activity stability of the optical-mechanical assembly 40 is further improved.

For example, as shown in fig. 2 and 3, the mounting bracket 50 includes a mounting plate 51, a sliding block 52, and a connecting rod 53, the guiding hole is opened in the sliding block 52, the connecting rod 53 connects the sliding block 52 with the lead screw nut, the mounting plate 51 is connected to the sliding block 52, and the mounting plate 51 is opened with a light-transmitting hole; the optical-mechanical assembly 40 is mounted on the upper surface of the mounting plate 51, and the light-emitting surface of the optical-mechanical assembly 40 faces the trough 20 through the light-transmitting holes.

The sliding block 52 has higher structural strength, and can improve the matching stability of the mounting frame 50 and the guide post. The connecting rod 53 may connect only one of the sliding blocks 52 with the lead screw nut, or may connect two or more sliding blocks 52 with the lead screw nut, which is not limited herein. The opto-mechanical assembly 40 is mounted on the upper surface of the mounting plate 51, so that the mounting plate 51 can support the opto-mechanical assembly 40 to improve the mounting stability of the opto-mechanical assembly 40 and the mounting frame 50.

Illustratively, as shown in fig. 2 and 3, the mounting bracket 50 further includes a connection folding bar 54, the connection folding bar 54 includes a first bar section 541 and a second bar section 542, the first bar section 541 extends along the height direction of the rack 10 and is connected to the sliding block 52, the second bar section 542 extends along the transverse direction and is connected to the lower end of the first bar section 541, and the mounting plate 51 is connected to the top surface of the second bar section 542. The connecting folding rod 54 can increase the connecting area with the sliding block 52 on one hand, and can improve the supporting stability of the mounting plate 51 on the other hand, so that the connecting strength of the mounting plate 51 and the sliding block 52 can be improved, the mounting plate 51 is prevented from being inclined due to the local deformation of the mounting frame 50, and the stability of the optical-mechanical assembly 40 on the mounting frame 50 is improved.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.

The ice making device provided by the embodiments of the present application is described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A three-dimensional printer, comprising:

a frame;

the trough is arranged on the rack;

the printing platform is arranged on the material groove in a lifting manner;

2. The three-dimensional printer according to claim 1, further comprising a mounting frame and a lead screw assembly, wherein the lead screw assembly is mounted to the frame, and a screw of the lead screw assembly extends in a height direction of the frame; the mounting rack is connected to a screw nut of the screw assembly so as to lift along with the screw nut; the optical-mechanical assembly is arranged on the mounting frame.

3. The three-dimensional printer according to claim 2, further comprising a handle handwheel connected to a top end of said screw.

4. The three-dimensional printer according to claim 2, further comprising a locking assembly mounted to said frame, said locking assembly being proximate to an end of said threaded rod, said locking assembly being configured to lock or unlock said threaded rod.

5. The three-dimensional printer according to claim 2, further comprising a guide shaft mounted to the frame, the guide shaft extending in a height direction of the frame; the mounting bracket is provided with a guide hole, and the guide hole is in sliding fit with the guide shaft.

6. The three-dimensional printer according to claim 5, wherein the number of the guiding shafts is plural, and the plural guiding shafts are divided into two groups and respectively disposed at two sides of the carriage assembly; the number and the position of the guide holes on the mounting rack correspond to the guide shafts.

7. The three-dimensional printer according to claim 5, wherein the mounting frame comprises a mounting plate, a sliding block and a connecting rod, the guiding hole is formed in the sliding block, the connecting rod connects the sliding block with the screw nut, the mounting plate is connected to the sliding block, and the mounting plate is provided with a light-transmitting hole; the ray apparatus subassembly install in the upper surface of mounting panel, just the play plain noodles of ray apparatus subassembly passes through the light trap orientation the silo.

8. The three-dimensional printer according to claim 7, wherein said mounting frame further comprises a connecting folding bar including a first bar segment extending in a height direction of said frame and connected to said slide block, and a second bar segment extending in a transverse direction and connected to a lower end of said first bar segment, said mounting plate being connected to a top surface of said second bar segment.

9. The three-dimensional printer according to any one of claims 2 to 8, further comprising an indicator connected to said mounting frame, said indicator extending in a lateral direction and being at the same height as the opto-mechanical assembly, said indicator being configured to indicate the height of said opto-mechanical assembly.

10. The three-dimensional printer according to any one of claims 1 to 8, wherein a distance between said opto-mechanical assembly and said printing platform is set to be 200mm to 1000mm within a range of motion of said opto-mechanical assembly.