CN212242155U

CN212242155U - Large-scale 3D printer of quick material increase of hexagonal frame

Info

Publication number: CN212242155U
Application number: CN201922211400.8U
Authority: CN
Inventors: 赵子晗
Original assignee: Hefei Yiwu Technology Co ltd
Current assignee: Hefei Yiwu Technology Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-12-29
Anticipated expiration: 2029-12-11

Abstract

The utility model provides a large-scale 3D printer of quick material increase of hexagonal frame, which comprises a frame, printing mechanism, actuating mechanism and install the brace table in the frame downside, the frame includes hexagonal upper bracket, hexagonal under bracing frame and connect the connecting rod that is parallel to each other more than three between upper bracket and under bracing frame, wherein three connecting rod projection point trisection circumferences, one side that these three connecting rods are relative all is provided with the guide rail, be provided with adjustable hold-in range cassette on the guide rail, printing mechanism includes print platform, the heating shower nozzle, send line ware and armed lever, be connected through the flake bearing between the one end of armed lever and the adjustable hold-in range cassette, also be connected through the flake bearing between the other end and the print platform. Have hexagonal frame, more bigger and more products can be printed under same area and space height to delta 3D printer relatively, can make the print platform moving range that the fisheye bearing drove increase through special fisheye bearing connected mode, simple to operate can print fast.

Description

Large-scale 3D printer of quick material increase of hexagonal frame

Technical Field

The invention belongs to the technical field of 3D printing, and particularly relates to a hexagonal frame rapid material increase large-scale 3D printer.

Background

3D printing (3DP), one of the rapid prototyping technologies, is a technology that constructs an object by printing layer by layer using an adhesive material such as powdered metal or plastic based on a digital model file.

The 3D printing can be simply understood as "multi-layer two-dimensional printing", and the 3D printer generally uses a specially-made material, and based on a cartesian mechanical coordinate system, the specially-made material is sprayed or fused layer by layer into a three-dimensional space according to a three-dimensional drawing, so that a high-complexity product which is difficult to manufacture by a conventional manufacturing process is manufactured.

At present, application number is CN 201710429605.6's patent, disclose "three arm parallel 3D printers", this technical scheme includes the frame, install the slide rail on three lateral edges of frame, be provided with the slider on the slide rail, three step motor are installed to the below of slide rail, be connected through the hold-in range between slider and the slide rail, the triangular prism middle part is provided with the shower nozzle support, the shower nozzle support passes through connecting rod link block, shower nozzle support lower part is provided with the shower nozzle, 3D printer frame is open among this technical scheme, the inconvenient shortcoming of maintenance and installation has been solved.

However, the above technical solutions have the following disadvantages:

the 3D printer adopting the three-arm parallel structure is commonly called as delta. The delta type 3D printer has an extrusion device similar to a triangular claw shape under the appearance of a triangular prism, is superficially based on a spherical coordinate system, actually has a Cartesian coordinate system according to the mathematical principle, and maps XY coordinates to three vertical axes only through a trigonometric function. The extruding device is connected in parallel on the three vertical shafts, and the height of the parallel device on the three shafts is controlled, so that the spatial position of the extruding device suspended in the half air is adjusted, and an object is printed. The same weight of the extrusion device is adjusted, so that the flexibility of the extrusion head can be well improved, and the printing speed and the printing precision are further improved. However, the printer has a large volume in the Z-axis direction because the length of the triangular claw is to be accommodated. Generally, in order to print an object having a height of 20CM, the overall height of the printer is 40 to 50 CM.

Based on this, we have designed a large-scale 3D printer of quick material increase of hexagonal frame.

Disclosure of Invention

The invention aims to solve the technical problems in the prior art, provides a hexagonal frame rapid material increase large-scale 3D printer and aims to solve the problems that the Z-direction range is small, the space occupation ratio required by printing is small and the printing structure is relatively unstable when printing is carried out by relying on a triangular structure.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a large-scale 3D printer of quick material increase of hexagonal frame, includes frame, printing mechanism, actuating mechanism and installs the brace table in the frame downside, the frame includes hexagonal upper bracket, hexagonal under bracing frame and connects the connecting rod that is parallel to each other more than three between upper bracket and under bracing frame, wherein three connecting rod projection point trisection circumferences, and the one side that these three connecting rods are relative all is provided with the guide rail, be provided with adjustable hold-in range cassette on the guide rail, printing mechanism includes print platform, heating shower nozzle, line feeder and armed lever, be connected through the flake bearing between the one end of armed lever and the adjustable hold-in range cassette, also be connected through the flake bearing between the other end and the print platform.

The connecting rod is provided with five and every the both ends of connecting rod are connected respectively on last support frame and the relative angle of under bracing frame.

The fisheye bearing is connected with the adjustable synchronous belt clamping seat and the printing platform through the connecting bulge, the connecting bulge is in a conical shape, and the diameter of one end, close to the fisheye bearing, of the connecting bulge is smaller than the diameter of one end, far away from the fisheye bearing, of the connecting bulge.

The arm pole is six, and every two as a set of connection adjustable hold-in range cassette with between print platform.

The lower support frame comprises six lower support rods, the upper support frame comprises six upper support rods, the upper support rods are connected between the upper support rods and the lower support rods, and the connecting rods and the upper support frame and the connecting rods and the lower support frame are connected through corner pieces.

The corner fittings connected with the lower ends of the connecting rods and provided with the guide rails are all provided with motor mounting grooves.

The adjustable synchronous belt clamping seat comprises a pressing mechanism and a fastening bolt, wherein the fastening bolt is abutted to the surface of the synchronous belt through a groove and an end part.

The pressing mechanism comprises a wedge block and a rack, the end part of the synchronous belt is clamped in the middle of the rack, the wedge block presses the side surface of the rack, the synchronous belt penetrates through the middle of the through groove, and a threaded hole for installing a fastening bolt is formed in the through groove.

The adjustable glass clamping piece is arranged at the middle position of the lower supporting rod, the supporting table is fixed between the adjustable glass clamping pieces, each adjustable glass clamping piece comprises a side lug and a waist-shaped groove, a round hole for installing an adjusting bolt is formed in each side lug, and a fastening screw penetrates through the middle of each waist-shaped groove.

The inner side of the lower support frame is provided with a triangular reinforcing frame, the triangular reinforcing frame comprises three fixing rods which are arranged at an angle of 120 degrees between every two adjacent fixing rods, one end of each fixing rod is fixedly connected with the other two ends of the fixing rods through a central triangular connecting piece, and the other ends of the three fixing rods are respectively connected with the middle positions of the corresponding lower support rods.

The position that the frame is close to the upper bracket frame is provided with additional strengthening, additional strengthening includes that the one corner of dead lever is not installed at the upper bracket frame through the corner fitting setting and the first stiffener of downwardly extending and connect the second stiffener between first stiffener and rather than two adjacent connecting rods, the one end of second stiffener is passed through the corner fitting and is connected the lower extreme at first stiffener, and the other end passes through the corner fitting and is connected with the connecting rod, the second stiffener is parallel with the upper bracket pole that its top corresponds.

The utility model provides a large-scale 3D printer of quick material increase of hexagonal frame, its beneficial effect lies in: compare current delta 3D printer, possess brand-new hexagonal frame, delta 3D printer can print bigger more products under same area and space height relatively, can make the print platform moving range that the fisheye bearing drove increase through special fisheye bearing connected mode, has the printing precision of industrial level, building materials level's printing range, high-speed printing speed. Each connecting piece of parametric design can save a large amount of installation time when multi-functional, reduces installation error, and is more firm, durable.

Drawings

The specification includes the following figures, each of which is presented as:

fig. 1 is a schematic view of an overall structure of a hexagonal frame rapid material increase large-scale 3D printer;

FIG. 2 is a top view of a lower support frame of a hexagonal frame rapid material increase large-scale 3D printer;

FIG. 3 is a schematic view of the connection of the lower end of the arm bar with the fisheye bearing;

FIG. 4 is a schematic view of the connection of the upper end of the arm and the fisheye bearing;

FIG. 5 is a schematic view of the connection between the connection protrusion and the fisheye bearing;

fig. 6 is a schematic view of an adjustable glass clip.

FIG. 7 is a schematic view of an adjustable synchronous belt cartridge;

fig. 8 is a schematic diagram of an internal structure of an adjustable synchronous belt cassette.

The reference numbers in the figures are:

1. a corner fitting; 2. a connecting rod; 3. the glass clamping piece can be adjusted; 4. a first reinforcement bar; 5. a support table; 6. a second reinforcement bar; 7. a wire harness; 8. a guide rail; 9. the synchronous belt clamping seat can be adjusted; 10. a fisheye bearing; 11. an arm lever; 12. a wire feeder; 13. heating the spray head; 14. printing platform, 15, display screen; 16. reinforcing ribs; 17. a central triangular connector; 18. a motor mounting groove; 19. fixing the rod;

20. a lower support frame; 201. a lower support bar;

21. an upper support frame; 22. a connecting projection; 23. a lateral ear; 24. a circular hole; 25. a groove; 26. a kidney-shaped groove; 27. passing through the slot; 28. tightening the bolt; 29. a wedge block; 30. a rack.

Detailed Description

The following detailed description of the embodiments of the present invention will be provided to facilitate better understanding of the technical solutions by the related art through the description of the embodiments with reference to the accompanying drawings.

As shown in fig. 1, a large-scale 3D printer of quick material increase of hexagonal frame, which comprises a frame, printing mechanism, actuating mechanism and install at the brace table 5 of frame downside, the frame includes hexagonal upper bracket 21, hexagonal under carriage 20 and connect the connecting rod 2 that is parallel to each other more than three between upper bracket 21 and under carriage 20, wherein 2 projection point trisection circumferences of three connecting rods, the 2 relative one sides of these three connecting rods all are provided with guide rail 8, be provided with adjustable hold-in range cassette 9 on the guide rail 8, printing mechanism includes print platform 14, heating shower nozzle 13, line feeder 12 and armed lever 11, be connected through fisheye bearing 10 between one end of armed lever 11 and the adjustable hold-in range cassette 9, also be connected through fisheye bearing 10 between the other end and the print platform 14.

The framework is open as a whole, so that the disassembly, assembly and maintenance of the internal structure are convenient, the support platform 5 is circular, when in arrangement, the support platform 5 is internally tangent to the lower support frame 20, in order to increase the area of the support platform 5, the lower support frame 20 is designed into a hexagon, in order to ensure the stability and coordination of the overall structure of the framework, the upper support frame 21 is also designed into a hexagon, the connecting rods 2 are arranged between the upper support frame 21 and the lower support frame 20, the upper support frame 21 and the lower support frame 20 are connected into a whole, in order to ensure the structural stability, the connecting rods 2 are provided with more than three connecting rods 2, the projection points of the three connecting rods 2 are trisected on the circumference, one sides, opposite to the three connecting rods 2, are provided with guide rails 8, the guide rails 8 are part of a driving mechanism, the driving mechanism comprises a stepping motor, a, the hold-in range drives the removal of slider, adjustable hold-in range cassette 9 is installed on the slider, the synchronizing wheel is installed on the corner fittings, actuating mechanism passes through the removal that armed lever 11 drove print platform 14, print platform 14 is printing mechanism's partly, printing mechanism still includes heating shower nozzle 13, line feeder 12 and armed lever 11, the both ends of armed lever 11 are connected on adjustable hold-in range cassette 9 and print platform 14 through flake bearing 10 respectively, flake bearing 10's home range is wider, with hexagonal frame's cooperation, printing mechanism's home range has been enlarged to a great extent, so relatively delta 3D printer can print bigger product under same area and space height.

Under the combined action of the limitation of the moving range of the hexagonal frame structure and the fisheye bearing, the printing machine can print products with the diameter of 1m when the frame does not exceed the horizontal range of 1.5m, can print products with the height of 1.6m under the condition of the height of 3m, and has the maximum printing height of 2.05m, so that the printing machine has higher space printing ratio compared with a 3D printer on the market at present.

As shown in fig. 1, five connecting rods 2 are provided and both ends of each connecting rod 2 are connected to opposite corners of the upper and lower support frames 21 and 20, respectively.

In order to improve the structural stability of the frame more, two ends of the connecting rod 2 are respectively fixed on the opposite corners of the upper support frame 21 and the lower support frame 20, the connecting rod 2 is provided with five connecting rods, therefore, a connecting rod 2 is not arranged at one corner, and the frame is specially designed to be open for facilitating maintenance and disassembly, but certain potential safety hazard is found in the printing process, and the external dust is easy to influence the printing process and the printing quality, so the glass is arranged on the frame, the glass has transparency, the printing process can be observed at any time, the fault part can be found, the maintenance can be carried out in time, the glass door is arranged at one corner without the connecting rod 2, the glass door has larger width, is convenient to maintain and take parts, and the front side of the glass door can be provided with a display screen 15, so that a worker can conveniently monitor the printing process at any time.

As shown in fig. 3-5, the fisheye bearing 10 is connected to the adjustable synchronous belt clamping seat 9 and the printing platform 14 through a connecting protrusion 22, the connecting protrusion 22 is of a conical shape, the diameter of one end of the connecting protrusion 22 close to the fisheye bearing 10 is smaller than the diameter of one end of the connecting protrusion 22 far away from the fisheye bearing 10, the number of the arm rods 11 is six, and every two of the arm rods are connected between the adjustable synchronous belt clamping seat 9 and the printing platform 14 as a group.

Two armed levers 11 of connection on an adjustable hold-in range cassette 9, fisheye bearing 10 passes through the joint protrusion 22 and installs on adjustable hold-in range cassette 9 and print platform 14, for the activity angle of maximize fisheye bearing 10, joint protrusion 22 designs into the tapered, and the one end diameter that is close to fisheye bearing 10 is less than the diameter of keeping away from fisheye bearing 10 one end moreover, can guarantee the intensity of structure like this, can reduce the interference of joint protrusion 22 to fisheye bearing again.

As shown in fig. 1, the lower support frame 20 includes six lower support rods 201, the upper support frame 21 includes six upper support rods, the upper support rods are connected between the upper support rods and between the lower support rods 201, the connecting rod 2 and the upper support frame 21 and the connecting rod 2 and the lower support frame 20 are connected through the corner fitting 1, and the corner fitting 1 connected with the lower end of the connecting rod 2 provided with the guide rail 8 is provided with a motor mounting groove 18.

The frame comprises the pole of various length, connect through corner fittings 1 between the pole, leave the mounting groove on the corner fittings 1, the installation of the pole of being convenient for, still set up threaded hole on the corner fittings 1, be used for further dead lever, make things convenient for the installation of frame, and the installation accuracy is higher moreover, need not measure specially when the installation, has saved a large amount of time, still seted up motor mounting groove 18 on the corner fittings 1 of 2 lower extreme fixings of connecting rod that set up guide rail 8, make things convenient for step motor's installation.

As shown in fig. 1, 7 and 8, the adjustable synchronous belt clamping seat comprises a pressing mechanism, a fastening bolt which is supported on the surface of the synchronous belt through a groove and an end part, the pressing mechanism comprises a wedge-shaped block and a rack, the end part of the synchronous belt is clamped in the middle of the rack, the wedge-shaped block presses the side surface of the rack, the synchronous belt passes through the middle of the groove, and a threaded hole for installing the fastening bolt is formed in the groove.

A synchronous wheel is arranged above the guide rail, one end of the synchronous belt is connected with a stepping motor, the other end of the synchronous belt is connected with an adjustable synchronous belt clamping seat, the middle of the synchronous belt is connected with the synchronous wheel, one end of the adjustable synchronous belt clamping seat is connected with the synchronous belt clamping seat, the synchronous belt is clamped in the middle of the rack and is fixed for the first time, then the upper wedge block compresses the side surface of the rack and is fixed for the second time, the synchronous belt is fixed and is guided out from the middle of the through groove, a threaded hole is formed in the through groove, a fastening bolt penetrates through the middle of the threaded hole, the end part of the fastening bolt supports against one side of the synchronous belt, a certain distance is reserved between the other side of the synchronous belt and the side wall of the through groove, the synchronous belt is made of rubber and has certain elasticity, and can become loose after being used for a, the structure enables the product size to be more accurate, and particularly when large products are printed, the precision of the small products can be guaranteed.

As shown in fig. 1 and 6, the middle positions of the lower support rods 201 are provided with adjustable glass clamping pieces 3, the support table 5 is fixed between the adjustable glass clamping pieces 3, each adjustable glass clamping piece 3 comprises a side lug 23 and a waist-shaped groove 26, the side lug 23 is provided with a round hole 24 for installing an adjusting bolt, and a fastening screw penetrates through the middle of each waist-shaped groove 26.

The middle parts of the six lower supporting rods 201 are provided with adjustable glass clamping pieces 3, the adjustable glass clamping pieces 3 are provided with grooves 25, the edges of the supporting tables 5 are clamped in the middle of the grooves 25, the height of the side lugs 23 is adjusted when the leveling is carried out, the side lugs are fixed through nuts, the kidney-shaped grooves 26 are arranged in the vertical direction, fastening screws with one ends fixed on the lower supporting rods 201 penetrate through the kidney-shaped grooves 26 and can slide in the kidney-shaped grooves 26 up and down, the lower supporting rods are fixed through the nuts again, and the leveling is completed.

As shown in fig. 2, a triangular reinforcing frame is arranged on the inner side of the lower supporting frame 20, the triangular reinforcing frame comprises three adjacent fixing rods 19 arranged at an angle of 120 °, one end of one fixing rod 19 is fixedly connected with one ends of the other two fixing rods 19 through a central triangular connecting part 17, and the other ends of the three fixing rods 19 are respectively connected with the middle positions of the corresponding lower supporting rods 201.

Lower carriage 20 is the support component of whole 3D printer, therefore needs higher intensity, sets up chevron shape triangle reinforcing frame in the middle of lower carriage 20, and three dead levers 19 of triangle reinforcing frame become 120 jiaos of arranging between, and the outside one end of three dead levers 19 is connected with corresponding lower support bar 201 middle part, and the inboard is fixed through central triangle-shaped connecting piece 17, and intensity can be guaranteed to such structure, has the complexity that can simplify the structure.

As shown in fig. 1, a reinforcing structure is disposed at a position of the frame close to the upper support frame 21, the reinforcing structure includes a first reinforcing rod 4 which is disposed at a corner of the upper support frame 21 where the fixing rod 19 is not installed and extends downward through a corner fitting 1, and a second reinforcing rod 6 which is connected between the first reinforcing rod 4 and two adjacent connecting rods 2, one end of the second reinforcing rod 6 is connected to the lower end of the first reinforcing rod 4 through the corner fitting 1, the other end of the second reinforcing rod is connected to the connecting rods 2 through the corner fitting 1, and the second reinforcing rod 6 is parallel to the upper support rod corresponding to the upper end of the second reinforcing rod 6.

As can be seen from the foregoing, the frame has one corner without the connecting rod 2, which affects the stability of the structure to a certain extent, in order to ensure the structural stability, a reinforcing structure is arranged on one side without the connecting rod 2, the reinforcing structure is arranged on one side close to the upper support frame 21 and provides enough space for installing the glass door, the reinforcing structure comprises a first reinforcing rod 4 and a second reinforcing rod 6, the first reinforcing rod 4 extends downwards from one corner of the upper support frame 21 for a certain length, and is parallel with other connecting rods 2, second stiffener 6 sets up two, 6 one end of second stiffener are connected with 4 lower extremes of first stiffener, the other end is connected with connecting rod 2 adjacent with first stiffener 4, two second stiffeners 6 are parallel rather than the last bracing piece of top respectively, all be connected through corner fittings 1 between first stiffener 4 and the last bracing piece, first stiffener 4 and second stiffener 6, second stiffener 6 and the connecting rod 2.

Reinforcing ribs 16 can be further arranged in the middle of the upper support frame 21 to further improve the strength of the frame, and a wire harness 7 can be arranged on the reinforcing ribs 16 to clamp all circuits inside the wire harness 7.

The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. The utility model provides a large-scale 3D printer of quick material increase of hexagonal frame, includes frame, printing mechanism, actuating mechanism and installs brace table (5) in the frame downside, its characterized in that: the frame includes hexagonal upper bracket (21), hexagonal lower carriage (20) and connects connecting rod (2) that are parallel to each other more than three between upper bracket (21) and lower carriage (20), wherein three connecting rod (2) projection trisection circumference, and the one side that these three connecting rod (2) are relative all is provided with guide rail (8), be provided with adjustable hold-in range cassette (9) on guide rail (8), printing mechanism is including printing platform (14), heating shower nozzle (13), line feed ware (12) and armed lever (11), be connected through fisheye bearing (10) between the one end of armed lever (11) and adjustable hold-in range cassette (9), also be connected through fisheye bearing (10) between the other end and the printing platform (14).

2. The large-scale 3D printer of quick material increase of hexagonal frame according to claim 1, characterized in that: the connecting rod (2) is provided with five and every two ends of the connecting rod (2) are respectively connected to the opposite corners of the upper support frame (21) and the lower support frame (20).

3. The large-scale 3D printer of quick material increase of hexagonal frame according to claim 1, characterized in that: fisheye bearing (10) are connected with adjustable hold-in range cassette (9) and print platform (14) through linking arch (22), linking arch (22) are the taper type, the one end diameter that linking arch (22) are close to fisheye bearing (10) is less than linking arch (22) keeps away from the diameter of fisheye bearing (10) one end.

4. The large-scale 3D printer of quick material increase of hexagonal frame according to claim 3, characterized in that: the number of the arm rods (11) is six, and every two arm rods are connected between the adjustable synchronous belt clamping seat (9) and the printing platform (14) as a group.

5. The large-scale 3D printer of quick material increase of hexagonal frame according to claim 1, characterized in that: the lower support frame (20) comprises six lower support rods (201), the upper support frame (21) comprises six upper support rods, the upper support rods are connected with each other between the lower support rods (201) and the upper support frame (21) and between the connecting rods (2) and the lower support frame (20) through corner pieces (1).

6. The large-scale 3D printer of quick material increase of hexagonal frame according to claim 5, characterized in that: the corner fittings (1) which are provided with the guide rails (8) and connected with the lower ends of the connecting rods (2) are provided with motor mounting grooves (18).

7. The large-scale 3D printer of quick material increase of hexagonal frame according to claim 1, characterized in that: the adjustable synchronous belt clamping seat comprises a pressing mechanism and a fastening bolt, wherein the fastening bolt is abutted to the surface of the synchronous belt through a groove and an end part.

8. The large hexagonal frame rapid additive 3D printer according to claim 7, wherein: the pressing mechanism comprises a wedge block and a rack, the end part of the synchronous belt is clamped in the middle of the rack, the wedge block presses the side surface of the rack, the synchronous belt penetrates through the middle of the through groove, and a threaded hole for installing a fastening bolt is formed in the through groove.

9. The large-scale 3D printer of quick material increase of hexagonal frame according to claim 5, characterized in that: the utility model discloses a glass support of a glass machine, including lower support bar (201), brace table (5), adjustable glass fastener (3) are including side ear (23) and waist type groove (26), set up round hole (24) of installation adjusting bolt on side ear (23), fastening screw passes in the middle of waist type groove (26).

10. The large-scale 3D printer of quick material increase of hexagonal frame according to claim 1, characterized in that: the utility model discloses a support frame, including lower carriage (20), triangle reinforcing frame includes that three adjacent two become dead lever (19) of 120 arranging between, one of them one end and two in addition of dead lever (19) the one end of dead lever (19) is through central triangle connecting piece (17) fixed connection, three the other end of dead lever (19) is connected with the intermediate position of corresponding lower bracing piece (201) respectively.

11. The large-scale 3D printer of quick material increase of hexagonal frame according to claim 1, characterized in that: the position that the frame is close to upper bracket (21) is provided with additional strengthening, additional strengthening includes that set up first stiffener (4) of one corner and downwardly extending of dead lever (19) and connect second stiffener (6) between first stiffener (4) and two connecting rods (2) adjacent rather than last support frame (21) do not install through corner fittings (1), the lower extreme at first stiffener (4) is connected through corner fittings (1) to the one end of second stiffener (6), and the other end passes through corner fittings (1) and is connected with connecting rod (2), second stiffener (6) are parallel with the upper bracket that its top corresponds.