Connecting device for 3D printing wires
By using the extrusion and fusion mechanism of the 3D printing filament connection device, the problems of low material switching efficiency and poor accuracy are solved, realizing efficient connection and flexible design of multi-material printing, and reducing equipment failure rate.
Patent Information
- Application Number
- CN202422824739.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-20
AI Technical Summary
Existing 3D printing equipment is inefficient, inaccurate, and costly when switching materials, leading to material waste and increased equipment failure rates, which limits the flexibility and design freedom of multi-material printing.
A 3D printed filament joining device is used, including an extrusion mechanism and a fusion mechanism. Different filaments are thermally fused together through a semi-Y-shaped channel. The extrusion and fusion of the filaments are controlled by an adjustment plate and a gear system. The fusion quality is ensured by a heating block and a temperature sensor.
It enables efficient connection of various filaments, reduces preparation time and material waste, improves the accuracy of material switching and design freedom, and reduces equipment failure rate.
Smart Images
Figure CN223466726U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to 3D printing technical field, specifically, relate to a kind of 3D printing wire material's connecting device. BACKGROUND
[0002] With the rapid development of 3D printing technology, especially in the field of Fused Deposition Modeling (FDM), 3D printing has not only limited to single material printing. Users increasingly hope to use different kinds of materials to achieve functional diversity and performance optimization, which is driving the progress of multi-material printing technology. However, there are still many challenges in the process of switching filaments, and the specific problems are as follows: Low material switching efficiency: In existing 3D printing equipment, when switching from one material to another, a long preparation time is usually required. The equipment needs to be cleaned each time to avoid material mixing or nozzle clogging, which not only reduces the printing efficiency, but also may cause material waste.
[0003] Inaccurate switching: Traditional equipment often cannot accurately control the feed amount of each material when switching different materials. This leads to uneven switching during printing, resulting in undesirable strength or appearance defects in some parts, affecting the overall quality of the printed part.
[0004] Increased cost: Existing multi-nozzle printers can achieve material switching, but during the printing material switching process, they often need to go through nozzle warming, material redundant extrusion and other processes, causing waste of resources such as manpower and material. The customization level of 3D printing products continues to increase, and the frequent switching of nozzles during the printing process increases the failure rate of the equipment. And high-end double-nozzle 3D printing equipment costs are high, which is not conducive to the widespread use and dissemination of 3D printing technology.
[0005] In view of the above problems, there is an urgent need for a new type of filament connecting device to improve the switching efficiency and accuracy between different types of materials. This device should allow users to flexibly adjust the material combination during the printing process to achieve higher design freedom and functional performance while reducing preparation time and material waste. SUMMARY
[0006] The technical problem to be solved by the utility model is to provide a 3D printing filament connecting device that allows users to flexibly adjust the material combination during the printing process to achieve higher design freedom and functional performance while reducing preparation time and material waste.
[0007] The utility model realizes the invention purpose by adopting the following technical solutions:
[0008] The utility model provides a kind of connecting device of 3D printing wire, it is characterized by, including: mounting plate;Symmetrical extrusion mechanism, is installed in one end of the mounting plate;Fusion mechanism, is installed in the other end of the mounting plate;The fusion mechanism includes guide upper plate and guide lower plate, symmetrical fixed bolt is distributed through the guide upper plate and the guide lower plate screw connection the mounting plate, the guide upper plate and the guide lower plate are respectively provided with half Y type channel;Heating block is installed on the guide upper plate, symmetrical heating rod and temperature sensor are installed on the heating block, the guide upper plate is provided with the perforation matched with the half Y type channel, and the guide lower plate is provided with the round hole matched with the heating block.By adopting extrusion mechanism, different wire extrusion half Y type channel is realized.By adopting fusion mechanism, the hot melt connection of two kinds of wires is realized.Wire after fusion passes through half Y type channel export, wire is extruded by guide upper plate and guide lower plate, and the diameter of wire fusion area is corrected.
[0009] As a further limitation of the technical solution, the extrusion mechanism includes a driving shaft, the driving shaft is bearing connected to the mounting plate, the driving shaft is fixedly connected to a driving gear, the mounting plate is bearing connected to a pin shaft, the pin shaft is fixedly connected to an adjusting plate, the adjusting plate is provided with a notch, the adjusting plate is bearing connected to a driven pin shaft, the driven pin shaft is fixedly connected to a driven gear, and the driven gear matches the driving gear.By adopting the adjusting plate, when the adjusting plate swings, the movement of the driven gear is realized.When the driven gear moves away from the driving gear, it is convenient for the first wire or the second wire to pass through.When the driven gear engages with the driving gear, it contacts the first wire or the second wire.When the driving gear rotates, it drives the first wire or the second wire to move, realizing the extrusion of the first wire or the second wire into the half Y type channel.
[0010] As a further limitation of the technical solution, the notch is provided with an adjusting bolt, the adjusting bolt is screw connected to a mounting seat, the mounting seat is fixedly connected to the mounting plate, and the mounting seat is fixedly connected to the adjusting plate by a compression spring.The adjusting bolt is sleeved by the compression spring.By adopting the compression spring, when the adjusting bolt is loosened, the adjusting plate swings under the elastic action of the compression spring, and the driven gear is disengaged from the engagement state and moves away from the driving gear.
[0011] As a further limitation of the technical solution, the lower part of the driving gear and the driven gear is respectively provided with a tapered groove, and the driving gear and the driven gear are provided with anti-skid grooves corresponding to the positions of the tapered grooves.The tapered groove is in the shape of "<", realizing the clamping of the first wire or the second wire.When the driving gear and the driven gear rotate, they drive the movement of the first wire or the second wire.By setting the anti-skid grooves, slipping is avoided, and the movement of the first wire or the second wire is facilitated.
[0012] As a further limitation of the technical solution, the upper end of the driving shaft is an arcuate cylinder, the handle connecting plate is provided with an arcuate hole matching the upper end of the driving shaft, and the handle connecting plate is fixedly connected with the rotating handle. By adopting the handle connecting plate, the connection with the driving shaft is facilitated, and the driving gear is rotated when the rotating handle is rotated.
[0013] As a further limitation of the technical solution, the upper plate is provided with a limiting groove, the lower plate is provided with a cutting groove, a shearing piece is installed in the limiting groove, and the shearing piece matches the cutting groove. By the shearing knife, the fused wire is cut.
[0014] As a further limitation of the technical solution, the upper plate is provided with a limiting groove, the lower plate is provided with a cutting groove, a shearing piece is installed in the limiting groove, and the shearing piece matches the cutting groove. By the shearing knife, the fused wire is cut.
[0015] Compared with the related art, the connecting device for 3D printing wire provided by the present application has the following beneficial effects:
[0016] The device can connect multiple wires into one 3D printing wire, thereby realizing the function of printing multiple materials by a single nozzle.
[0017] The device should be able to reduce the preparation time and material waste while allowing users to flexibly adjust the material combination during printing to achieve higher design freedom and functional performance.
[0018] The fused wire passes through the half-Y-shaped channel outlet, and the wire is extruded by the upper guide plate and the lower guide plate, so that the diameter of the wire fusion area is corrected. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 The utility model of the three -dimensional structure schematic Figure 1 .
[0020] Figure 2 The utility model of the local three -dimensional structure schematic Figure 1 .
[0021] Figure 3 The utility model of the fusion mechanism three -dimensional structure schematic drawing.
[0022] Figure 4 The utility model of the fusion mechanism local explosion map.
[0023] Figure 5 The utility model of the fusion mechanism guard plate three -dimensional structure schematic drawing.
[0024] Figure 6 The utility model of the wire fusion schematic diagram.
[0025] Figure 7 The utility model discloses a handle connecting plate three-dimensional structure schematic diagram.
[0026] In the drawing: 1, mounting plate, 2, rotating handle, 3, handle connecting plate, 4, driving shaft, 5, driving gear, 6, driven gear, 7, pin shaft, 8, adjusting plate, 9, adjusting bolt, 10, notched, 11, mounting seat, 12, driven pin shaft, 13, compression spring, 14, fixed bolt, 15, shear piece, 16, guiding upper plate, 17, guiding lower plate, 18, heating block, 19, heating rod, 20, temperature sensor, 21, fixed handle, 22, half Y type channel, 23, limiting groove, 24, cutting groove, 25, first wire material, 26, second wire material, 27, third wire material. DETAILED DESCRIPTION
[0027] The utility model will be further described below in connection with the drawings and embodiments.
[0028] A kind of connecting device of 3D printing wire material, comprising: mounting plate 1;Symmetrical extrusion mechanism, is installed in one end of the mounting plate 1;Fusion mechanism, is installed in the other end of the mounting plate 1;The fusion mechanism includes guiding upper plate 16 and guiding lower plate 17, and symmetrically fixed bolt 14 is distributed and is connected the mounting plate 1 by screw thread in guiding upper plate 16 and guiding lower plate 17, guiding upper plate 16 and guiding lower plate 17 are respectively provided half Y type channel 22;Heating block 18 is installed on guiding upper plate 16, and symmetrically heating rod 19 and temperature sensor 20 are installed on heating block 18, and heating block 18 is provided with the perforation matched with half Y type channel 22, and guiding lower plate 17 is provided with the round hole matched with heating block 18.By using extrusion mechanism, realize that different wire material extrudes into half Y type channel 22.By using fusion mechanism, the hot melt connection of two wire materials is realized.Wire material after fusion passes through half Y type channel 22 export, wire material is extruded by guiding upper plate 16 and guiding lower plate 17, and the diameter of wire material fusion area is corrected.
[0029] The extrusion mechanism comprises a driving shaft 4, the driving shaft 4 is bearing connected with the mounting plate 1, the driving shaft 4 is fixedly connected with a driving gear 5, the mounting plate 1 is bearing connected with a pin shaft 7, the pin shaft 7 is fixedly connected with an adjusting plate 8, the adjusting plate 8 is provided with a notch 10, the adjusting plate 8 is bearing connected with a driven pin shaft 12, the driven pin shaft 12 is fixedly connected with a driven gear 6, the driven gear 6 is matched with the driving gear 5. By adopting the adjusting plate 8, when the adjusting plate 8 swings, the movement of the driven gear 6 is realized, when the driven gear 6 is away from the driving gear 5, the first wire 25 or the second wire 26 is convenient to pass through, when the driven gear 6 is engaged with the driving gear 5, the first wire 25 or the second wire 26 is contacted, when the driving gear 5 rotates, the first wire 25 or the second wire 26 is driven to move, the first wire 25 or the second wire 26 is extruded into the half Y-shaped channel 22.
[0030] The notch 10 is provided with an adjusting bolt 9, the adjusting bolt 9 is threadedly connected with a mounting seat 11, the mounting seat 11 is fixedly connected with the mounting plate 1, the mounting seat 11 is fixedly connected with the adjusting plate 8 through a compression spring 13. The compression spring 13 is sleeved with the adjusting bolt 9. By adopting the compression spring 13, when the adjusting bolt 9 is loosened, under the elastic action, the adjusting plate 8 swings, the driven gear 6 is disengaged from the engagement state, and is away from the driving gear 5.
[0031] The lower parts of the driving gear 5 and the driven gear 6 are respectively provided with tapered grooves, and the driving gear 5 and the driven gear 6 are provided with anti-skid grooves corresponding to the positions of the tapered grooves. The tapered grooves are in the shape of "<", which realizes the clamping of the first wire 25 or the second wire 26, and drives the movement of the first wire 25 or the second wire 26 when the driving gear 5 and the driven gear 6 rotate. By setting the anti-skid grooves, slipping is avoided, and the movement of the first wire 25 or the second wire 26 is facilitated.
[0032] The upper end of the driving shaft 4 is an arcuate cylinder, the handle connecting plate 3 is provided with an arcuate hole matched with the upper end of the driving shaft 4, and the handle connecting plate 3 is fixedly connected with the rotating handle 2. By adopting the handle connecting plate 3, the connection with the driving shaft 4 is facilitated, and the driving gear 5 is rotated when the rotating handle 2 is rotated.
[0033] The guide upper plate 16 is provided with a limiting groove 23, the guide lower plate 17 is provided with a cutting groove 24, the limiting groove 23 is installed with a shearing piece 15, and the shearing piece 15 is matched with the cutting groove 24. By the shearing knife 15, the shearing of the fused wire is realized.
[0034] The guide upper plate 16 is threadedly connected with a fixed handle 21 corresponding to the half Y-shaped channel 22, and the fixed handle 21 is used to fix the third wire 27 and the fused wire.
[0035] The guide upper plate 16 is made of transparent material.
[0036] The working principle of the 3D printing filament connection device provided by the present invention is as follows: at the beginning of the operation, the third filament 27 is placed into the outlet end of the semi-Y-shaped channel 22 and enters the working area of the heating block 18. The fixing handle 21 is tightened and the filament is fixed between the guide upper plate 16 and the guide lower plate 17.
[0037] Install the handle connecting plate 3 on Figure 1 On the upper driving shaft 4 shown, the first wire 25 is passed between the upper driving gear 5 and the upper driven gear 6 and extends into an entrance of the semi-Y-shaped channel 22. The upper adjusting bolt 9 is tightened to drive the adjusting plate 8 to swing around the pin. The adjusting plate 8 squeezes the compression spring 13, and the adjusting plate 8 drives the driven pin 12 and the driven gear 6 to swing, so that the driven gear 6 engages with the driving gear 5, and the driven gear 6 and the driving gear 5 clamp the first wire 25. Rotating the rotary handle 2 drives the handle connecting plate 3 to swing, realizing the rotation of the upper driving gear 5, and the upper driven gear 6 meshes and rotates with the upper driving gear 5. The first wire 25 is extruded from the left extrusion mechanism into the fusion mechanism, and the rotary handle 2 is continuously rotated to make the first wire 25 contact with the third wire 27. The rotation of the rotary handle 2 is stopped, the heating rod 19 is started, and the temperature sensor 20 is observed. When the temperature reaches the rated temperature, the fixed handle 21 is loosened, and the rotary handle 2 is continued to be rotated to extrude the fused wire from the semi-Y-shaped channel 22. At this time, the wire is still in a high-temperature molten state. After the molten wire is squeezed through the wire track walls of the guide upper plate 16 and the guide lower plate 17, the diameter of the molten wire is equivalent to the diameter of the untreated wire.
[0038] When the length of the extruded wire meets the design requirements, the shearing piece 15 moves along the limiting groove 23 and the cutting groove 24 to cut the first wire 25. The upper adjusting bolt 9 is loosened, the compression spring 13 is restored, the driven gear 6 is disengaged from the driving gear 5, the first wire 25 is withdrawn, and the fixing handle 21 is tightened.
[0039] Install the handle connecting plate 3 on the lower side driving shaft 4, pass the second wire 26 between the lower side driving gear 5 and the lower side driven gear 6, and extend into the other inlet of the half Y-shaped channel 22, tighten the lower side adjusting bolt 9, the lower side driven gear 6 is engaged with the lower side driving gear 5, the second wire 26 is extruded into the fusion mechanism by another person extrusion mechanism, continuously rotate the rotating handle 2, make the second wire 26 contact with the first section first wire 25, and move the contact position to the working area of the heating block 18, stop rotating the rotating handle 2, start the heating rod 19, observe the temperature sensor 20, when the temperature reaches the rated temperature, loosen the fixed handle 21, continue to rotate the rotating handle 2, and extrude the fused wire, at this time the wire is still in a high-temperature molten state, the molten wire is extruded through the wire track wall of the guiding upper plate 16 and the guiding lower plate 17, and the diameter of the molten wire is equivalent to that of the untreated wire. The above-mentioned actions are reciprocated until the multi-wire fusion body meeting the requirements is extruded, such as Figure 6 As shown in the figure, the work is completed.
[0040] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.
Claims
1. A connecting device for 3D printing filaments, comprising: a mounting plate (1); symmetric extrusion mechanisms mounted at one end of the mounting plate (1); a fusing mechanism mounted at the other end of the mounting plate (1); the fusing mechanism comprising a guide upper plate (16) and a guide lower plate (17), symmetric fixed bolts (14) being distributed through the guide upper plate (16) and the guide lower plate (17) to threadedly connect the mounting plate (1), the guide upper plate (16) and the guide lower plate (17) each being provided with a half-Y-shaped channel (22); the guide upper plate (16) being mounted with a heating block (18), the heating block (18) being mounted with symmetric heating rods (19) and a temperature sensor (20), the heating block (18) being provided with perforations matching the half-Y-shaped channel (22), the guide lower plate (17) being provided with a circular hole matching the heating block (18). the extrusion mechanism comprising a driving shaft (4) bearing connected to the mounting plate (1), the driving shaft (4) being fixedly connected with a driving gear (5), the mounting plate (1) being bearing connected with a pin shaft (7), the pin shaft (7) being fixedly connected with an adjusting plate (8) provided with a notch (10), the adjusting plate (8) being bearing connected with a driven pin shaft (12), the driven pin shaft (12) being fixedly connected with a driven gear (6) matching the driving gear (5). the notch (10) being provided with an adjusting bolt (9) threadedly connected with a mounting seat (11) fixedly connected with the mounting plate (1), the mounting seat (11) being fixedly connected with the adjusting plate (8) through a compression spring (13). the driving gear (5) and the driven gear (6) each being provided with a tapered groove at the lower part, and the driving gear (5) and the driven gear (6) each being provided with an anti-skid groove at a position corresponding to the tapered groove. the driving shaft (4) being an arcuate cylinder at the upper end, a handle connecting plate (3) being provided with an arcuate hole matching the upper end of the driving shaft (4), the handle connecting plate (3) being fixedly connected with a rotating handle (2). the guide upper plate (16) being provided with a limiting slot (23), the guide lower plate (17) being provided with a cutting slot (24), the limiting slot (23) being mounted with a shearing piece (15) matching the cutting slot (24).
2. The apparatus of claim 1, wherein: the guide upper plate (16) being threadedly connected with a fixed handle (21) corresponding to the half-Y-shaped channel (22).
3. The apparatus of claim 2, wherein: 4. The apparatus of claim 2, wherein: 5. The apparatus of claim 2, wherein: 6. The apparatus of claim 1, wherein: 7. The apparatus of claim 1, wherein: