Wire feeding device of multicolor 3D printer

Abstract

The utility model discloses a wire feeding device of a multicolor 3D printer. The wire feeding device comprises a wire feeding box, a connecting block, a circular opening slot and a double-cylinder inserting rod, according to the multicolor 3D printer wire feeding device, connecting blocks are fixedly connected to the back faces of wire feeding boxes, circular opening inserting grooves are formed in the two sides of each connecting block, bicylindrical inserting rods matched with the circular opening inserting grooves are jointly inserted into the two corresponding circular opening inserting grooves, and first blocking pieces are fixedly connected to the top ends of the bicylindrical inserting rods; a rotating shaft is fixedly connected to the bottom end of the double-cylinder inserting rod, a second blocking piece which is the same as the end face of the double-cylinder inserting rod is rotationally connected to the rotating shaft, and a plurality of wire feeding boxes are arranged and matched with the double-cylinder inserting rod through connecting blocks to be connected in an inserted mode, so that the wire feeding boxes are connected into a whole; and the number of the placed wire coils can be conveniently increased for storage space combination, different wire feeding devices do not need to be arranged, and use with different number requirements can be achieved only by combining different numbers of wire feeding boxes.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, in particular to a wire feeding device for a multi-color 3D printer. Background Art

[0002] A 3D printer, also known as a three-dimensional printer, is a machine that uses additive manufacturing technology, or rapid prototyping technology. Based on a digital model file, it uses adhesive materials such as special wax, powdered metal, or plastic to create three-dimensional objects by printing layer upon layer. Currently, 3D printers are used to manufacture products. This technology uses a layer-by-layer printing process to construct objects. The principle of a 3D printer is to input data and raw materials into the 3D printer, and the machine will produce the product layer by layer according to the program. The biggest difference between 3D printers and traditional printers is that the "ink" they use is actual raw material. The stacked layers can be formed in a variety of ways, and the media that can be used for printing is diverse, ranging from a variety of plastics to metals, ceramics, and rubber-like materials. Some printers can also combine different media to make the printed object hard on one end and soft on the other.

[0003] A wire feeder is a device that supplies raw materials to a 3D printer. Existing wire feeders for 3D printers can usually only hold a fixed number of wire rolls and cannot provide different placement positions according to different multi-color printing requirements. Printers with different numbers of extensions require different wire feeders, which is inconvenient to use. Therefore, a multi-color 3D printer wire feeder is proposed to optimize the existing wire feeder. Utility Model Content

[0004] The purpose of the present invention is to provide a wire feeding device for a multi-color 3D printer to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The cam is provided with a first end for receiving the first threaded rod and a second end for receiving the first threaded rod, and the cam is provided with a second end for receiving the first threaded rod.

[0007] As a further solution of the present invention: a box cover that is compatible with it is provided at the top opening of the wire feeding box, the top of the box cover is hinged to the top of the wire feeding box by a hinge, and the bottom of the box cover falls on the front surface of the wire feeding box. A handle groove is fixedly embedded on the box cover, and the box cover is made of transparent material, so as to facilitate observation of the remaining situation of the wire roll inside the wire feeding box.

[0008] As a further solution of the present invention: a first I-shaped roller is symmetrically mounted on the inner side of the bottom of the wire feeding box, the wire roll is placed on the first I-shaped roller, and a second I-shaped roller adapted to the wire roll is pressed above the wire roll, and the wire roll can roll between the first I-shaped roller and the second I-shaped roller.

[0009] As a further solution of the present invention: the second I-shaped roller is rotatably installed at the front end of the arc frame, the tail end of the arc frame is hinged to the rear inner wall of the wire feeding box through a hinge seat, and a first spring is fixedly connected between the arc frame and the wire feeding box.

[0010] As a further solution of the present invention: two upper and lower installation cavities are provided at the front bottom of the wire feeding box, a drive motor is symmetrically fixedly installed in the upper installation cavity, the drive motor is electrically connected to the control system and power supply system of the 3D printer, and a wire guide tube is horizontally passed through the lower installation cavity.

[0011] As a further solution of the present invention: the wire guide tube is symmetrically provided with a notch corresponding to the driving motor, and a wire feeding roller corresponding thereto is provided in the notch. The wire feeding roller is rotatably installed in the lower mounting cavity, and the output end of the driving motor is fixedly connected to the wire feeding roller.

[0012] As a further solution of the present invention: a trumpet wire inlet is provided at one end of the wire guide tube close to the inside of the wire feeding box. The setting of the trumpet wire inlet facilitates the insertion of consumables into the wire guide tube, and the other end of the wire guide tube is fixedly connected to an extension tube.

[0013] As a further solution of the present invention: the outer sliding sleeve of the extension tube is provided with a rectangular movable seat adapted thereto, the outer sliding buckle of the rectangular movable seat is provided with a U-shaped frame adapted thereto, the U-shaped frame is fixedly connected to the outer wall of the wire feeding box, the corresponding extension tube on the rectangular movable seat is fixedly connected with a guide tube, the guide tube slides through the U-shaped frame and is fixedly connected with a connecting tube, the outer sleeve of the guide tube is provided with a second spring, the second spring is arranged between the rectangular movable seat and the U-shaped frame, and the connecting tube is connected to the wire inlet of the print head of the 3D printer.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model is provided with multiple wire feeding boxes, which are connected to each other through connecting blocks and double cylindrical plug rods, so that the multiple wire feeding boxes are connected into a whole, which is convenient for storing the number of wire rolls to be placed. There is no need to set up different wire feeding devices. It is only necessary to combine different numbers of wire feeding boxes to achieve the use of different quantity requirements.

[0016] 2. In the present invention, the second baffle is rotatably installed at the bottom end of the double cylindrical insertion rod through a torsion spring and a rotating shaft, and the rotation angle is limited by a limit groove and a convex key. Therefore, when the double cylindrical insertion rod is inserted into two adjacent circular opening slots, the second baffle is automatically misaligned with the double cylindrical insertion rod, and cooperates with the first baffle to form upper and lower limits, thereby completing the combined connection of adjacent wire feeding boxes. The connection effect can be achieved by direct insertion, making the connection operation more convenient.

[0017] 3. The utility model supports the wire roll by the first I-shaped roller, and limits the wire roll in a space formed by the first I-shaped roller and the second I-shaped roller by the second I-shaped roller, so that the unwinding rolling of the wire roll is more stable.

[0018] 4. In the present invention, the second I-shaped roller is rotatably mounted on the arc frame, which is hinged to the wire feeding box and cooperates with the first spring to form a movable downward pressure effect, so that the second I-shaped roller can be lifted up, making it convenient to remove the wire coil for replacement.

[0019] 5. The utility model drives the wire feeding roller by driving the motor, and cooperates with the wire guide tube for guiding, so as to feed the wire. The consumables on the wire roll enter the wire guide tube through the wire inlet of the trumpet, enter the guide tube through the extension tube, and enter the connecting tube through the guide tube to supply the consumables to the 3D printer. During the feeding process, when the extrusion speed of the 3D printer is slow, the rectangular movable seat can be moved in the U-shaped frame to extend the total length of the wire guide tube, extension tube, guide tube and connecting tube, avoid over-fed wire, and reset through the second spring, thereby forming a buffering effect, making the wire feeding smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a wire feeding device for a multi-color 3D printer.

[0021] Figure 2 A rear perspective view of a wire feeding device for a multi-color 3D printer.

[0022] Figure 3 A diagram showing a double-cylindrical insert in a wire feeding device for a multi-color 3D printer.

[0023] Figure 4 This is a three-dimensional display of a wire feeding box in a wire feeding device of a multi-color 3D printer.

[0024] Figure 5 This is a diagram showing the interior of a wire feeding box in a multi-color 3D printer wire feeding device.

[0025] Figure 6 A cross-sectional view of a wire feeding box in a wire feeding device of a multi-color 3D printer.

[0026] Figure 7 A cross-sectional view of a wire guide tube in a wire feeding device of a multi-color 3D printer.

[0027] In the figure: 1. Wire feeding box; 2. Connecting block; 3. Circular opening slot; 4. Double cylindrical plug rod; 5. First baffle; 6. Rotating shaft; 7. Second baffle; 8. Torsion spring; 9. Limiting groove; 10. Key; 11. Box cover; 12. First I-shaped roller; 13. Wire coil; 14. Second I-shaped roller; 15. Arc frame; 16. First spring; 17. Driving motor; 18. Wire guide tube; 19. Wire feeding roller; 20. Horn wire inlet; 21. Extension tube; 22. Rectangular movable seat; 23. U-shaped frame; 24. Guide tube; 25. Connecting tube; 26. Second spring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figures 1 to 7 In the embodiment of the present invention, a multi-color 3D printer wire feeding device includes a plurality of adjacently arranged wire feeding boxes 1, the back of the wire feeding boxes 1 are fixedly connected to a connecting block 2, and circular opening slots 3 are opened on both sides of the connecting block 2. A double cylindrical plug rod 4 adapted to the double circular opening slot 3 is inserted into each of the two corresponding circular opening slots 3. The top of the double cylindrical plug rod 4 is fixedly connected to a first baffle 5, and the bottom end of the double cylindrical plug rod 4 is fixedly connected to a rotating shaft 6. A second baffle 7 having the same end face as the double cylindrical plug rod 4 is rotatably connected to the rotating shaft 6. The rotating shaft 6 rotates through A torsion spring 8 is provided at the rear of the second baffle 7, one end of the torsion spring 8 is fixedly connected to the rotating shaft 6, and the other end of the torsion spring 8 is fixedly connected to the second baffle 7. A limiting groove 9 is provided on the second baffle 7, and a convex key 10 is fixedly connected to the corresponding limiting groove 9 on the rotating shaft 6. The convex key 10 is inserted into the limiting groove 9 and is movably connected. The setting of the convex key 10 and the limiting groove 9 limits the rotation angle of the second baffle 7. The center angle of the limiting groove 9 is 40°. A wire roll 13 adapted to it is provided in the wire feeding box 1. The wire roll 13 includes consumables and a winding roller, and the consumables are wound on the winding roller.

[0030] A plurality of wire feeding boxes 1 are provided, and the wire feeding boxes 1 are connected to each other through connecting blocks 2 and double cylindrical plug rods 4, so that the plurality of wire feeding boxes 1 are connected into a whole, which is convenient for combining storage space according to the number of wire rolls placed. There is no need to set up different wire feeding devices, and different quantities of use can be achieved by simply combining different numbers of wire feeding boxes 1.

[0031] The second baffle 7 is rotatably installed on the bottom end of the double cylindrical insertion rod 4 through the torsion spring 8 and the rotating shaft 6, and the rotation angle is limited by the limit groove 9 and the convex key 10. Therefore, when the double cylindrical insertion rod 4 is inserted into the two adjacent circular opening slots 3, the second baffle 7 is automatically misaligned with the double cylindrical insertion rod 4, and cooperates with the first baffle 5 to form upper and lower limits, thereby completing the combined connection of adjacent wire feeding boxes 1. The connection effect can be achieved by direct insertion, making the connection operation more convenient.

[0032] The top opening of the wire feeding box 1 is provided with a box cover 11 that matches it. The top of the box cover 11 is hinged to the top of the wire feeding box 1 through a hinge, and the bottom of the box cover 11 falls on the front surface of the wire feeding box 1. A handle groove is fixedly embedded on the box cover 11. The box cover 11 is made of transparent material, which makes it convenient to observe the remaining situation of the wire roll 13 inside the wire feeding box 1.

[0033] A first I-shaped roller 12 is symmetrically mounted on the inner side of the bottom of the wire feeding box 1, and a wire roll 13 is placed on the first I-shaped roller 12. A second I-shaped roller 14 adapted to the wire roll 13 is pressed above the wire roll 13, and the wire roll 13 can roll between the first I-shaped roller 12 and the second I-shaped roller 14.

[0034] The wire roll 13 is supported by the first I-shaped roller 12, and is limited in a space formed by the first I-shaped roller 12 and the second I-shaped roller 14 by the second I-shaped roller 14, so that the unwinding rolling of the wire roll 13 is more stable.

[0035] The second I-shaped roller 14 is rotatably mounted on the front end of the arc frame 15 , and the tail end of the arc frame 15 is hinged to the rear inner wall of the wire feeding box 1 through a hinge seat. A first spring 16 is fixedly connected between the arc frame 15 and the wire feeding box 1 .

[0036] The second I-shaped roller 14 is rotatably mounted on the arc frame 15, and the arc frame 15 is hinged on the wire feeding box 1, and cooperates with the first spring 16 to form a movable downward pressure effect, so that the second I-shaped roller 14 can be lifted up, making it convenient to remove the wire roll 13 for replacement.

[0037] The front bottom of the wire feeding box 1 is provided with two upper and lower mounting cavities. A drive motor 17 is symmetrically fixedly installed in the upper mounting cavity. The drive motor 17 is electrically connected to the control system and power system of the 3D printer. A wire guide tube 18 is horizontally passed through the lower mounting cavity.

[0038] The wire guide tube 18 is symmetrically provided with a notch corresponding to the driving motor 17 , and a wire feeding roller 19 adapted thereto is provided in the notch. The wire feeding roller 19 is rotatably mounted in the lower mounting cavity, and the output end of the driving motor 17 is fixedly connected to the wire feeding roller 19 .

[0039] A horn wire inlet 20 is provided at one end of the wire guide tube 18 close to the inside of the wire feeding box 1. The setting of the horn wire inlet 20 facilitates the insertion of consumables into the wire guide tube 18. The other end of the wire guide tube 18 is fixedly connected to an extension tube 21.

[0040] The outer sliding sleeve of the extension tube 21 is provided with a rectangular movable seat 22 that is compatible with it, and the outer sliding buckle of the rectangular movable seat 22 is provided with a U-shaped frame 23 that is compatible with it. The U-shaped frame 23 is fixedly connected to the outer wall of the wire feeding box 1, and the corresponding extension tube 21 on the rectangular movable seat 22 is fixedly connected with a guide tube 24. The guide tube 24 slides through the U-shaped frame 23 and is fixedly connected with a connecting tube 25. The outer side of the guide tube 24 is provided with a second spring 26, and the second spring 26 is arranged between the rectangular movable seat 22 and the U-shaped frame 23. The connecting tube 25 is connected to the wire inlet of the print head of the 3D printer.

[0041] The wire feeding roller 19 is driven by the driving motor 17 and guided by the wire guide tube 18 to feed the wire. The consumables on the wire roll 13 enter the wire guide tube 18 through the horn wire inlet 20, enter the guide tube 24 through the extension tube 21, and enter the connecting tube 25 through the guide tube 24 to supply the consumables to the 3D printer. During the feeding process, when the extrusion speed of the 3D printer is slow, the rectangular movable seat 22 can be moved in the U-shaped frame 23 to extend the total length of the wire guide tube 18, the extension tube 21, the guide tube 24 and the connecting tube 25, so as to avoid the over-sent wire and reset it through the second spring 26, thereby forming a buffering effect, making the wire feeding smoother.

[0042] The working principle of this utility model is:

[0043] During use, the wire feeding roller 19 is driven by the driving motor 17, and the wire guide tube 18 is used for guiding to feed the wire. The consumables on the wire roll 13 enter the wire guide tube 18 through the trumpet wire inlet 20, enter the guide tube 24 through the extension tube 21, and enter the connecting tube 25 through the guide tube 24 to supply the consumables to the 3D printer. During the supply process, when the extrusion speed of the 3D printer is slow, the rectangular movable seat 22 can be moved in the U-shaped frame 23, so that the total length of the wire guide tube 18, the extension tube 21, the guide tube 24 and the connecting tube 25 can be extended, and the excess wire can be avoided. It is reset by the second spring 26, thereby forming a buffering effect, making the wire feeding smoother.

[0044] Open the box cover 11 and push the second I-shaped roller 14 upwards. At this time, the wire roll 13 can be placed on the first I-shaped roller 12, and the consumables on the wire roll 13 are introduced from the horn wire inlet 20, and finally transported forward by the rotation of the wire feed roller 19. At this time, the second I-shaped roller 14 is released, and under the action of the first spring 16, the second I-shaped roller 14 is pressed on the wire roll 13 to form a clamping effect.

[0045] Place the wire feeding box 1 adjacent to each other, take the double cylindrical rod 4, insert the second baffle 7 into the two adjacent circular opening slots 3, and rotate the double cylindrical rod 4 to align with the circular opening slots 3, and further insert the double cylindrical rod 4 down until the first baffle 5 is pressed on the connecting block 2. At this time, the second baffle 7 is reset and deflected under the action of the torsion spring 8, and is limited by the convex key 10 and the limit groove 9, so that the second baffle 7 is misaligned with the double cylindrical rod 4. At this time, the first baffle 5 and the second baffle 7 form an upper and lower limiting effect.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wire feeding device for a multi-color 3D printer, comprising a plurality of wire feeding boxes (1) arranged adjacent to each other, characterized in that: The back of the wire feeding box (1) is fixedly connected to a connecting block (2), and circular opening slots (3) are provided on both sides of the connecting block (2). Double cylindrical plug rods (4) adapted thereto are inserted into the two corresponding circular opening slots (3), the top of the double cylindrical plug rod (4) is fixedly connected to a first baffle (5), the bottom of the double cylindrical plug rod (4) is fixedly connected to a rotating shaft (6), and a second baffle (7) having the same end face as the double cylindrical plug rod (4) is rotatably connected to the rotating shaft (6). ), the rotating shaft (6) rotates and passes through the second baffle (7), and a torsion spring (8) is provided thereon, one end of the torsion spring (8) is fixedly connected to the rotating shaft (6), and the other end of the torsion spring (8) is fixedly connected to the second baffle (7), a limiting groove (9) is provided on the second baffle (7), and a convex key (10) is fixedly connected to the corresponding limiting groove (9) on the rotating shaft (6), and the convex key (10) is inserted into the limiting groove (9) and is movably connected, and a wire roll (13) adapted thereto is provided in the wire feeding box (1).

2. A multi-color 3D printer wire feeding device according to claim 1, characterized in that: The top opening of the wire feeding box (1) is provided with a box cover (11) adapted thereto, the top of the box cover (11) is hinged to the top of the wire feeding box (1) through a hinge, the bottom of the box cover (11) falls on the front side surface of the wire feeding box (1), and a handle groove is fixedly embedded on the box cover (11).

3. The wire feeding device for a multi-color 3D printer according to claim 1, characterized in that: A first I-shaped roller (12) is symmetrically mounted on the inner side of the bottom of the wire feeding box (1), a wire roll (13) is placed on the first I-shaped roller (12), and a second I-shaped roller (14) adapted to the wire roll (13) is pressed above the wire roll (13).

4. A wire feeding device for a multi-color 3D printer according to claim 3, characterized in that: The second I-shaped roller (14) is rotatably mounted on the front end of the arc frame (15), and the tail end of the arc frame (15) is hinged to the rear inner wall of the wire feeding box (1) through a hinge seat. A first spring (16) is fixedly connected between the arc frame (15) and the wire feeding box (1).

5. The wire feeding device for a multi-color 3D printer according to claim 1, characterized in that: The front bottom of the wire feeding box (1) is provided with two upper and lower mounting cavities, a driving motor (17) is symmetrically fixedly installed in the upper mounting cavity, and a wire guide tube (18) is horizontally passed through the lower mounting cavity.

6. The wire feeding device for a multi-color 3D printer according to claim 5, characterized in that: The wire guide tube (18) is symmetrically provided with a notch corresponding to the driving motor (17), and a wire feeding roller (19) adapted thereto is provided in the notch. The wire feeding roller (19) is rotatably mounted in the lower mounting cavity, and the output end of the driving motor (17) is fixedly connected to the wire feeding roller (19).

7. The wire feeding device for a multi-color 3D printer according to claim 5, characterized in that: The wire guide tube (18) is provided with a wire inlet (20) at one end close to the interior of the wire feeding box (1), and the other end of the wire guide tube (18) is fixedly connected to an extension tube (21).

8. The wire feeding device for a multi-color 3D printer according to claim 7, characterized in that: The outer sliding sleeve of the extension tube (21) is provided with a rectangular movable seat (22) adapted thereto, the outer sliding buckle of the rectangular movable seat (22) is provided with a U-shaped frame (23) adapted thereto, the U-shaped frame (23) is fixedly connected to the outer wall of the wire feeding box (1), the corresponding extension tube (21) on the rectangular movable seat (22) is fixedly connected with a guide tube (24), the guide tube (24) slides through the U-shaped frame (23) and is fixedly connected with a connecting tube (25), the outer sleeve of the guide tube (24) is provided with a second spring (26), and the second spring (26) is arranged between the rectangular movable seat (22) and the U-shaped frame (23).

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