A 3D printing consumable winding and fixing device without auxiliary materials
Patent Information
- Application Number
- CN202610915611.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-24
- Publication Date
- 2026-08-21
AI Technical Summary
该方式虽然无需辅助材料，但存在效率低下、人工成本高、难以匹配自动化生产线等明显缺陷
[0022]优选地，所述第一轮和第二轮均采用弹性硅胶或聚氨酯材料制成。该类弹性材料具有一定的表面摩擦系数和适度的变形能力。在夹持丝线时，材料自身的弹性变形能够增加与丝线表面的接触面积和摩擦力，有效防止丝线在夹持过程中产生相对滑动，同时避免因刚性夹持对丝线表面造成压痕、划伤或挤压变形，保证了丝线的外观质量和后续焊接性能。此外，弹性材料的缓冲特性能够吸收丝线在切断瞬间产生的冲击和振动，有利于维持夹持的稳定性。
Smart Images
Figure CN122607859A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of 3D printing consumables winding devices, and particularly relates to a material-free 3D printing consumables winding and fixing device. Background Technology
[0002] 3D printing consumables (such as PLA, ABS, PETG filaments, etc.) need to go through processes such as extrusion, cooling, traction, and winding during production, and are finally wound into standard spools. When a spool of filament is fully wound, the filament needs to be cut and the end fixed to the spool to prevent the filament from loosening, and at the same time to facilitate quick connection to the next empty spool for continuous production.
[0003] Currently, the industry mainly categorizes the methods for securing 3D printing filaments after winding them into the following two types:
[0004] The first method involves operators manually inserting the end of the thread into a hole in the side plate of the reel, securing it using the thread's elasticity or by knotting. While this method requires no auxiliary materials, it suffers from significant drawbacks, including low efficiency, high labor costs, and difficulty in integrating with automated production lines. Furthermore, relying solely on the thread's elasticity for fixation can lead to the thread end slipping out of the hole in the reel's side plate during transport, causing the thread to become loose.
[0005] The second type is the fixing method using adhesive tape or wrapping film. However, this existing technology has problems such as high cost, complicated procedures and low efficiency. Moreover, after fixing with adhesive tape or wrapping film, it often needs to be manually torn off or removed before subsequent drying and other processes. Not only is the process complicated, but the waste tape and film will also cause environmental pollution.
[0006] Therefore, how to achieve automated winding and fixing while eliminating auxiliary materials such as tape and stretch film, thereby reducing production costs, improving efficiency, and reducing environmental pollution, is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention
[0007] This invention proposes a material-free 3D printing filament winding and fixing device, which can realize fully automated operation of filament cutting, filament end clamping and positioning, and welding fixation after winding. The entire process requires no manual intervention and no auxiliary materials such as tape or wrapping film. At the same time, the filament end is directly welded to the surface filament of the spool through ultrasonic welding. The welding point is strong and reliable, which can effectively avoid the problem of filament loosening due to filament end detachment during transportation, ensure the stability of spool packaging and product quality, and significantly reduce the pollution of industrial solid waste to the environment.
[0008] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:
[0009] A material-free 3D printing filament winding and fixing device includes an ultrasonic welding device, a clamping device, a filament cutting device, and a base. A filament winding device is provided on one side of the base to hold and drive a filament spool. The filament cutting device is located on the inlet side of the filament winding device. The clamping device is movably mounted on the base and positioned above the filament winding device. The filament cutting device and the clamping device are arranged sequentially along the filament conveying direction. The ultrasonic welding device includes an ultrasonic welding head and a welding cylinder. The ultrasonic welding head is fixedly mounted on the working end of the welding cylinder, with the working end of the ultrasonic welding head facing the outer surface of the filament wound on the spool.
[0010] The method of using the device of the present invention includes the following steps: S1: Start the filament winding device to drive the spool to rotate, wind the 3D printed filament onto the spool, and accumulate the winding length in real time; S2: When the accumulated winding length reaches the preset value, control the filament winding device to decelerate and reduce the winding tension; S3: Start the clamping device to press down the filament, start the filament cutting device to cut the filament, and hold the filament end formed after cutting by the clamping device; S4: Drive the spool to rotate, and transfer the clamped filament end to the working position of the ultrasonic welding device; S5: Start the welding cylinder to press down the ultrasonic welding head, overlap the filament end with the filament already wound on the spool, start ultrasonic vibration to weld, and after welding, keep the ultrasonic welding head pressed down until the weld cools and solidifies; S6: Lift the ultrasonic welding head, release the clamping device, and perform the reel change operation. In step S3, the length of the wire between the cutting position and the welding position in step S5 is controlled between 10mm and 20mm to ensure that there is enough operating space between the clamping device and the welding head, so that clamping and welding do not interfere with each other, and to avoid entanglement or shaking during the transfer process due to the excessive length of the wire end, which would affect the welding positioning accuracy.
[0011] This solution achieves fully automated operation of wire end clamping and positioning, wire cutting and welding fixation after winding by coordinating the wire cutting device, clamping device and ultrasonic welding device. No manual intervention is required for the entire process of inserting holes or applying tape, which greatly improves the production efficiency of the winding and finishing process, reduces labor costs and can well match the high-speed continuous production requirements of automated production lines.
[0012] Importantly, this device eliminates the traditional methods of fixing with tape or wrapping film. Instead, it uses ultrasonic welding to directly fuse the wire ends to the surface of the already wound wire on the spool. The entire fixing process requires no auxiliary consumables, avoiding the continuous consumption of tape, film, and other auxiliary materials, thus reducing material costs. It also eliminates the tedious manual removal of auxiliary materials before subsequent drying processes, simplifying the process. Furthermore, by not generating waste tape or film, it significantly reduces industrial solid waste pollution to the environment.
[0013] Furthermore, the weld joint formed by ultrasonic welding is strong and reliable, effectively preventing the wire end from loosening during transportation or handling, thus ensuring the stability of the wire spool packaging and product quality. The clamping device is movable and installed on the base above the wire winding device. Before cutting, the clamping device presses down on the wire and holds the wire end after cutting to prevent the wire end from springing back and loosening. The wire winding device can drive the spool to rotate and accurately transfer the clamped wire end to the welding station, making the welding positioning precise and the operation smooth and continuous.
[0014] Preferably, the clamping device includes a first wheel and a second wheel arranged sequentially along the wire feeding direction. The first and second wheels are rotatably arranged, forming a welding gap between them. The wire passes under the first and second wheels and contacts their lower surfaces. This welding gap provides a clear welding working area for the ultrasonic welding head, allowing it to directly align with the wire in the gap from above, avoiding welding position deviation or uncertainty. The wire passing under the first and second wheels and contacting their lower surfaces allows the wheels to clamp the wire while applying a certain pressure to prevent it from shifting, and also allows the wire to be pulled and moved by the reel while clamped, achieving compatibility between clamping and feeding. The two wheels arranged sequentially along the wire feeding direction form two support points for the wire, effectively preventing the wire end from loosening or deviating from the predetermined welding position due to elastic recoil during and after cutting, providing a stable positioning basis for subsequent welding processes. The entire clamping process requires no manual intervention and can be automatically connected with the preceding and following processes, further ensuring the continuity and reliability of the winding and finishing operations.
[0015] The first wheel is a guide wheel with a guide groove on its circumference to accommodate the wire. The second wheel is a pressure wheel for pressing the wire. The guide groove on the first wheel helps to accommodate and guide the wire, ensuring it travels along a predetermined path during transport and preventing positional deviations due to wire vibration or offset. This ensures the wire is accurately positioned within the welding gap between the first and second wheels. The second wheel, acting as a pressure wheel, applies pressure to the wire, working in conjunction with the guide wheel to form a stable clamping constraint on opposite sides of the wire. This prevents the wire end from springing back and loosening during and after cutting, and also suppresses any shifting or offset during subsequent rotation and transport. Through the guiding wheel's positioning and the pressure wheel's clamping, the wire end is reliably constrained in a predetermined position, providing a precise positioning basis for ultrasonic welding. This helps ensure the consistency of the welding point position and the stability of the welding quality, thereby improving the yield rate of the winding and finishing process.
[0016] Preferably, the working end of the ultrasonic welding head faces the welding gap between the first and second wheels. By aligning the working end of the ultrasonic welding head with the welding gap between the first and second wheels, the welding head can directly align with the wire clamped and fixed in the gap by the two wheels when it presses down, ensuring the accuracy of the welding point. Since the welding gap is located between the first and second wheels, and the wire is always constrained in this gap before and after cutting, the wire end is in a clamped and positioned state when the welding head is working. The welding process is less prone to deviation or incomplete welding due to wire shaking or elastic displacement, which helps to improve the consistency and reliability of welding quality. It is worth mentioning that this positional limitation allows the welding head to directly weld the wire in the gap from above, resulting in a concentrated welding area and a small heat-affected zone, reducing the heat impact on other wires on the spool and ensuring the quality of the finished spool.
[0017] Preferably, the clamping device further includes a connecting plate, on which the first and second wheels are rotatably mounted. A movable component is mounted on the base, and the ultrasonic welding device is mounted on the working end of the movable component. The connecting plate is slidably mounted on the working end of the movable component, and an elastic element is provided between the connecting plate and the working end of the movable component. The connecting plate ensures the stability of the relative position between the two wheels, ensuring that the two wheels always maintain the correct spacing and angular relationship, which is beneficial to the dimensional accuracy and repeatability of the welding gap. The elastic element allows the first and second wheels to float relative to the movable component as a whole. When the two wheels press against the wire on the spool, the compression and reset of the elastic element can adapt to changes in the height of the wire surface and the unevenness of the number of winding layers on the spool, ensuring that the two wheels and the wire always maintain appropriate contact pressure, avoiding excessive compression deformation or poor contact of the wire due to rigid contact. The movable component allows the clamping device and the ultrasonic welding device to move closer to or further away from the spool as a whole, giving the clamping and welding processes a flexible adaptability to working conditions.
[0018] Preferably, the working end of the ultrasonic welding head has an arc-shaped contoured surface, the width of which along the axial direction of the wire is 3mm to 5mm. This allows the arc-shaped contoured surface to fit the cylindrical outer surface of the wire, enabling surface contact rather than point or line contact during welding. This effectively increases the contact area between the welding head and the wire, allowing ultrasonic energy to be transmitted more evenly to the welding area, thus improving energy utilization and welding efficiency. The 3mm to 5mm width of the arc-shaped contoured surface along the axial direction of the wire ensures sufficient fusion area in the welding region to achieve reliable welding strength, while avoiding adhesion or damage to adjacent wires due to excessively wide welding surfaces caused by heat. This achieves a reasonable balance between welding strength and heat-affected zone. More importantly, the arc-shaped contoured surface allows the welding head to automatically adapt to the slight undulations in the wire arrangement when it presses against the surface of the wire already wound on the spool. This results in a tighter fit during the pressure holding process, which helps improve the consistency and stability of the welding quality, thereby further enhancing the reliability of the winding and finishing fixation.
[0019] Preferably, the device further includes a wire guide lever, which is disposed on the wire inlet side of the wire winding device and is used to guide the wire to move axially along the spool. The wire guide lever allows the wire to reciprocate along the axial direction of the spool during the wire winding process, ensuring that the wire is evenly layered on the winding shaft. This prevents the wire from accumulating at a single axial position on the spool, which could lead to localized overwinding or disordered arrangement. The evenly distributed wire layers, after cutting, allow the wire ends to more accurately align below the working position of the ultrasonic welding head, helping to ensure the consistency of the welding point and improve the accuracy of welding positioning.
[0020] Preferably, the wire winding device includes a winding shaft and a drive motor, with the wire spool fixed on the winding shaft and the drive motor drivingly connected to the winding shaft. This allows the wire spool to precisely start and stop, adjust its rotation speed, and position its angle according to control commands. This meets the control requirements for rotation speed and stop position at different stages during the winding process, such as uniform winding, deceleration and tension reduction, and precise positioning and transfer of the wire end, thereby ensuring the smoothness of the winding and finishing operations and the accuracy of welding positioning.
[0021] Preferably, the wire cutting device is a cylinder-driven or motor-driven scissor mechanism. Using a scissor mechanism as the wire cutting device, the wire is cut by the closing action of the scissor arms driven by a cylinder or motor. This method features simple structure, direct action, and fast cutting response. The scissor-type cutting action can apply concentrated shearing force to the wire in a very short time, resulting in a clean cut surface without burrs or stringing. This facilitates a tight fit between the wire end and the surface wire of the spool during subsequent welding, thereby improving the stability of the welding quality.
[0022] Preferably, both the first and second wheels are made of elastic silicone or polyurethane material. This type of elastic material has a certain coefficient of surface friction and moderate deformation capacity. When clamping the wire, the elastic deformation of the material itself increases the contact area and friction with the wire surface, effectively preventing relative slippage of the wire during clamping. It also avoids indentations, scratches, or extrusion deformation of the wire surface caused by rigid clamping, ensuring the appearance quality of the wire and its subsequent welding performance. Furthermore, the cushioning properties of the elastic material absorb the impact and vibration generated at the moment of cutting, which helps maintain clamping stability.
[0023] In summary, this material-free 3D printing filament winding and fixing device enables fully automated operations of filament cutting, filament end clamping and positioning, and welding fixation after winding. The entire process requires no manual intervention and no auxiliary materials such as tape or stretch film. Furthermore, ultrasonic welding directly fuses the filament ends to the surface of the spool, ensuring a strong and reliable weld. This effectively prevents filament loosening during transportation, guaranteeing the stability of the spool packaging and product quality, and significantly reducing industrial solid waste pollution. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0026] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0027] Figure 3 This is a schematic diagram of the ultrasonic welding device and clamping device in this invention.
[0028] In the picture,
[0029] 1-Ultrasonic welding device; 11-Ultrasonic welding head; 12-Welding cylinder;
[0030] 2-Clamping device; 21-First wheel; 211-Guide groove; 22-Second wheel; 23-Welding gap; 24-Connecting plate; 25-Elastic element;
[0031] 3-Slicing device;
[0032] 4-Base; 41-Moving component;
[0033] 5-Thread winding device; 51-Winding shaft;
[0034] 6-line reel;
[0035] 7- Cable-guided swing arm. Detailed Implementation
[0036] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0037] Reference Figures 1-3 As shown, a material-free 3D printing consumable winding and fixing device includes an ultrasonic welding device 1, a clamping device 2, a wire cutting device 3, and a base 4. A wire winding device 5 is provided on one side of the base 4, which can hold a wire spool 6 and drive the wire spool 6 to rotate. The wire cutting device 3 is located on the wire inlet side of the wire winding device 5. The clamping device 2 is movably installed on the base 4 and located above the wire winding device 5. The wire cutting device 3 and the clamping device 2 are arranged sequentially along the wire conveying direction. The ultrasonic welding device 1 includes an ultrasonic welding head 11 and a welding cylinder 12. The ultrasonic welding head 11 is fixedly installed on the working end of the welding cylinder 12, and the working end of the ultrasonic welding head 11 faces the outer surface of the wire wound on the wire spool 6.
[0038] The method of using the device of the present invention includes the following steps: S1: Start the wire winding device 5 to drive the spool 6 to rotate, wind the 3D printed wire onto the spool 6, and accumulate the winding length in real time; S2: When the accumulated winding length reaches the preset value, control the wire winding device 5 to decelerate and reduce the winding tension; S3: Start the clamping device 2 to press the wire, start the wire cutting device 3 to cut the wire, and hold the wire end formed after cutting by the clamping device 2; S4: Drive the spool 6 to rotate, and transfer the clamped wire end to the working position of the ultrasonic welding device 1; S5: Start the welding cylinder 12 to press down the ultrasonic welding head 11, overlap the wire end with the wire already wound on the surface of the wire on the spool 6, start ultrasonic vibration to weld, and after welding, keep the ultrasonic welding head 11 in the pressed state until the weld cools and solidifies; S6: Lift the ultrasonic welding head 11, release the clamping device 2, and perform the rewinding operation. In step S3, the length of the wire between the cutting position and the welding position in step S5 is controlled between 10mm and 20mm to ensure that there is enough operating space between the clamping device 2 and the welding head, so that clamping and welding do not interfere with each other, and to avoid entanglement or shaking during the transfer process due to the excessive length of the wire end, which would affect the welding positioning accuracy.
[0039] This solution achieves fully automated operation of wire end clamping and positioning, wire cutting and welding fixation after winding through the coordinated cooperation of wire cutting device 3, clamping device 2 and ultrasonic welding device 1. No manual intervention is required for the entire process of inserting holes or applying tape, which greatly improves the production efficiency of the winding and finishing process, reduces labor costs, and can well match the high-speed continuous production needs of automated production lines.
[0040] Importantly, this device abandons the traditional methods of fixing with tape or wrapping film. Instead, it uses ultrasonic welding to directly fuse the wire ends to the surface of the already wound wire on the spool 6. The entire fixing process requires no auxiliary consumables, avoiding the continuous consumption of tape, film, and other auxiliary materials, thus reducing material costs. It also eliminates the tedious manual removal of auxiliary materials before subsequent drying processes, simplifying the process. At the same time, since no waste tape or film is generated, it significantly reduces industrial solid waste pollution to the environment.
[0041] Furthermore, the weld joint formed by ultrasonic welding is strong and reliable, effectively preventing the wire end from loosening during transportation or handling, thus ensuring the stability of the wire reel packaging and product quality. The clamping device 2 is movably installed on the base 4 and located above the wire winding device 5. Before cutting, the clamping device 2 presses down on the wire and holds the wire end after cutting to prevent the wire end from springing back and loosening. The wire winding device 5 can drive the reel 6 to rotate and accurately transfer the clamped wire end to the welding station, making the welding positioning precise and the operation smooth and continuous.
[0042] Furthermore, refer to Figure 2 and Figure 3 As shown, the clamping device 2 includes a first wheel 21 and a second wheel 22 arranged sequentially along the wire conveying direction. The first wheel 21 and the second wheel 22 are rotatably arranged, and a welding gap 23 is formed between the first wheel 21 and the second wheel 22. The wire passes under the first wheel 21 and the second wheel 22 and contacts the lower surfaces of both. The welding gap 23 between the first wheel 21 and the second wheel 22 provides a clear welding working area for the ultrasonic welding head 11, allowing the welding head to directly align with the wire in the gap from above for welding, avoiding problems of welding position offset or uncertainty. The wire passes under the first wheel 21 and the second wheel 22 and contacts the lower surfaces of both, so that while clamping the wire, the two wheels apply a certain clamping force to the wire to prevent it from shifting, and also allow the wire to be pulled and moved by the wire reel 6 in the clamped state, achieving compatibility between clamping and conveying. Two wheels are arranged sequentially along the wire feeding direction, forming two support points for the wire. This effectively prevents the wire end from loosening or deviating from the predetermined welding position due to elastic recoil during and after cutting, providing a stable positioning basis for subsequent welding processes. The entire clamping process requires no manual intervention and can automatically connect with the preceding and following processes, further ensuring the continuity and reliability of the winding and finishing operations.
[0043] Among them, reference Figure 3 As shown, the first wheel 21 is a guide wheel, with a guide groove 211 on its circumference to accommodate the wire. The second wheel 22 is a pressure wheel for pressing the wire. The guide groove 211 on the first wheel 21 accommodates and guides the wire, ensuring it travels along a predetermined path during transport and preventing positional deviations due to wire vibration or offset. This ensures the wire is accurately positioned within the welding gap 23 between the first wheel 21 and the second wheel 22. The second wheel 22, acting as a pressure wheel, applies pressure to the wire, working in conjunction with the guide wheel to form a stable clamping constraint on both sides of the wire. This prevents the wire end from springing back and loosening due to elastic recovery during and after cutting, and also suppresses any shifting or offset during subsequent rotation and transport. Through the limiting guidance of the guide wheel and the pressing fixation of the pressure wheel, the wire end is reliably constrained in a predetermined position, providing a precise positioning basis for ultrasonic welding. This helps ensure the consistency of the welding point position and the stability of the welding quality, thereby improving the yield rate of the winding and finishing process.
[0044] Furthermore, refer to Figure 3 As shown, the working end of the ultrasonic welding head 11 faces the welding gap 23 between the first wheel 21 and the second wheel 22. By aligning the working end of the ultrasonic welding head 11 with the welding gap 23 between the first wheel 21 and the second wheel 22, the welding head can directly align with the wire clamped and fixed in the gap by the two wheels when it presses down, ensuring the accuracy of the welding point. Since the welding gap 23 is located between the first wheel 21 and the second wheel 22, and the wire is always constrained in this gap by the two wheels before and after cutting, the wire end is in a clamped and positioned state when the welding head is working. The welding process is less prone to deviation or incomplete welding due to wire shaking or elastic displacement, which helps to improve the consistency and reliability of welding quality. It is worth mentioning that this positional constraint allows the welding head to directly weld the wire in the gap from above. The welding area is concentrated and the heat-affected zone is small, reducing the heat impact on other wires on the wire reel 6 and ensuring the quality of the finished wire reel 6.
[0045] Furthermore, refer to Figure 3As shown, the clamping device 2 also includes a connecting plate 24. The first wheel 21 and the second wheel 22 are rotatably mounted on the connecting plate 24. A moving component 41 is mounted on the base 4. The ultrasonic welding device 1 is mounted on the working end of the moving component 41. The connecting plate 24 is slidably mounted on the working end of the moving component 41, and an elastic element 25 is provided between the connecting plate 24 and the working end of the moving component 41. The setting of the connecting plate 24 ensures the stability of the relative position between the two wheels, so that the two wheels always maintain the correct spacing and angle relationship, which is beneficial to the dimensional accuracy and repeatability of the welding gap 23. The setting of the elastic element 25 allows the first wheel 21 and the second wheel 22 to float relative to the moving component 41 as a whole. When the two wheels press against the wire on the spool 6, the compression and reset of the elastic element 25 can adapt to the height change of the wire surface and the unevenness of the number of winding layers of the spool 6, so that the two wheels and the wire always maintain appropriate contact pressure, avoiding excessive compression deformation or poor contact of the wire due to rigid contact. The movable component 41 allows the clamping device 2 and the ultrasonic welding device 1 to move closer to or further away from the wire reel 6 as a whole, giving the clamping and welding processes a flexible adaptability to different working conditions. The movable component 41 can be a commercially available electric guide rail; the elastic element 25 can be a spring.
[0046] Furthermore, the working end of the ultrasonic welding head 11 has an arc-shaped contoured surface, with a width of 3mm to 5mm along the wire axis. This arc-shaped contoured surface adapts to the cylindrical outer surface of the wire, enabling surface contact rather than point or line contact during welding. This effectively increases the contact area between the welding head and the wire, allowing ultrasonic energy to be transmitted more evenly to the welding area, thus improving energy utilization and welding efficiency. The 3mm to 5mm width of the arc-shaped contoured surface along the wire axis ensures sufficient fusion area in the welding region to achieve reliable welding strength, while avoiding adhesion or damage to adjacent wires due to excessively wide welding surfaces caused by heat. This achieves a reasonable balance between welding strength and heat-affected zone. More importantly, the arc-shaped contoured surface allows the welding head to automatically adapt to the slight undulations in the wire arrangement when it presses against the surface of the wire already wound on the coil 6. This results in a tighter fit during the pressure holding process, which helps to improve the consistency and stability of the welding quality, thereby further improving the reliability of the winding and fixing.
[0047] Furthermore, refer to Figure 1As shown, it also includes a wire guide lever 7, which is located on the wire inlet side of the wire winding device 5 and is used to guide the wire to move axially along the reel 6. The wire guide lever 7, by swinging during the wire winding process, guides the wire to move back and forth along the axial direction of the reel 6, ensuring that the wire is evenly layered on the winding shaft 51. This prevents the wire from accumulating at a certain axial position on the reel 6, which could lead to localized overwinding or disordered arrangement. The evenly distributed wire layers, after cutting, allow the wire ends to more accurately align below the working position of the ultrasonic welding head 11, which helps ensure the consistency of the welding point and improves the accuracy of welding positioning.
[0048] Furthermore, refer to Figure 2 As shown, the wire winding device 5 includes a winding shaft 51 and a drive motor. The wire spool 6 is fixed on the winding shaft 51, and the drive motor is connected to the winding shaft 51 for transmission. In this way, the wire spool 6 can achieve precise start and stop, rotation speed adjustment, and angle positioning according to control commands, so as to meet the control requirements of rotation speed and stop position at different stages during the winding process, such as uniform winding, deceleration and tension reduction, and precise positioning and transfer of wire ends. This ensures the smoothness of the winding and finishing operation and the accuracy of welding positioning.
[0049] Furthermore, the wire cutting device 3 is a scissor mechanism driven by a cylinder or a motor. Using a scissor mechanism as the wire cutting device 3, the wire is cut by the closing action of the scissor arms driven by a cylinder or motor. This method features a simple structure, direct action, and fast cutting response. The scissor-like cutting action can apply concentrated shearing force to the wire in a very short time, resulting in a clean cut surface without burrs or stringing. This facilitates a tight fit between the wire end and the surface wire of the wire reel 6 during subsequent welding, thereby improving the stability of the welding quality.
[0050] Furthermore, both the first round 21 and the second round 22 are made of elastic silicone or polyurethane material. This type of elastic material has a certain coefficient of surface friction and moderate deformation capacity. When clamping the wire, the material's own elastic deformation increases the contact area and friction with the wire surface, effectively preventing relative slippage of the wire during clamping. It also avoids indentations, scratches, or extrusion deformation on the wire surface caused by rigid clamping, ensuring the wire's appearance quality and subsequent welding performance. In addition, the cushioning properties of the elastic material absorb the impact and vibration generated at the moment of wire cutting, which helps maintain clamping stability.
[0051] In summary, this material-free 3D printing filament winding and fixing device enables fully automated operations of filament cutting, filament end clamping and positioning, and welding fixation after winding, without manual intervention or the use of auxiliary materials such as tape or wrapping film. Furthermore, ultrasonic welding directly fuses the filament ends to the surface of the spool 6, ensuring a strong and reliable weld point. This effectively prevents the filament ends from loosening during transportation, guaranteeing the stability of the spool 6 packaging and product quality, and significantly reducing industrial solid waste pollution.
[0052] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.
Claims
1. A material-free 3D printing filament winding and fixing device, characterized in that, The device includes an ultrasonic welding apparatus, a clamping device, a wire cutting device, and a base. A wire winding device is provided on one side of the base to hold and drive a wire spool. The wire cutting device is located on the wire inlet side of the wire winding device. The clamping device is movably mounted on the base and positioned above the wire winding device. The wire cutting device and the clamping device are arranged sequentially along the wire conveying direction. The ultrasonic welding apparatus includes an ultrasonic welding head and a welding cylinder. The ultrasonic welding head is fixedly mounted on the working end of the welding cylinder, with the working end of the ultrasonic welding head facing the outer surface of the wire wound on the spool.
2. The auxiliary material-free 3D printing consumable winding and fixing device according to claim 1, characterized in that, The clamping device includes a first wheel and a second wheel arranged sequentially along the wire feeding direction. The first wheel and the second wheel are rotatably arranged, and a welding gap is formed between the first wheel and the second wheel. The wire passes under the first wheel and the second wheel and contacts the lower surfaces of both.
3. The auxiliary material-free 3D printing consumable winding and fixing device according to claim 2, characterized in that, The first wheel is a guide wheel, and the circumferential surface of the guide wheel is provided with a guide groove for accommodating the wire. The second wheel is a pressure wheel for pressing the wire.
4. The auxiliary material-free 3D printing filament winding and fixing device according to claim 2 or 3, characterized in that, The working end of the ultrasonic welding head faces the welding gap between the first wheel and the second wheel.
5. The 3D printing filament winding and fixing device without auxiliary materials according to any one of claims 2 to 4, characterized in that, The clamping device further includes a connecting plate, the first wheel and the second wheel are rotatably mounted on the connecting plate, a movable component is mounted on the base, the ultrasonic welding device is mounted on the working end of the movable component, the connecting plate is slidably mounted on the working end of the movable component, and an elastic element is provided between the connecting plate and the working end of the movable component.
6. The auxiliary material-free 3D printing consumable winding and fixing device according to claim 1, characterized in that, The working end of the ultrasonic welding head has an arc-shaped contoured surface, and the width of the arc-shaped contoured surface along the axial direction of the wire is 3mm to 5mm.
7. The auxiliary material-free 3D printing consumable winding and fixing device according to claim 1, characterized in that, It also includes a wire guide lever, which is located on the wire inlet side of the wire winding device and is used to guide the wire to move axially along the spool.
8. The auxiliary material-free 3D printing consumable winding and fixing device according to claim 1, characterized in that, The thread winding device includes a winding shaft and a drive motor. The thread spool is fixed on the winding shaft, and the drive motor is connected to the winding shaft for transmission.
9. The auxiliary material-free 3D printing consumable winding and fixing device according to claim 1, characterized in that, The shredding device is a cylinder-driven or motor-driven scissor mechanism.
10. The auxiliary material-free 3D printing consumable winding and fixing device according to claim 2, characterized in that, Both the first and second wheels are made of elastic silicone or polyurethane material.