Detachable 3D printing consumable wire coil
By using an asymmetric rotation locking mechanism and guide structure design, the problem of loosening of the detachable 3D printing filament spool under dynamic working conditions is solved, achieving stability and reliability in the filament feeding process and avoiding filament breakage and feeding interruption.
Patent Information
- Application Number
- CN202620087915.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-22
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2036-01-22
AI Technical Summary
Existing detachable 3D printing filament reels are prone to problems such as filament breakage, filament bursting, and material supply interruption due to the locking mechanism loosening or unscrewing under the dynamic working conditions of high-performance printers.
An asymmetric rotary locking mechanism is adopted, which uses the outer arc guide female fastener structure of the exposed part of the short arc female fastener and the long arc female fastener to cooperate with the asymmetric rotary locking of the short arc male fastener structure and the long arc male fastener structure. Combined with the design of positioning fastener groove, inclined guide platform and strip guide groove, the locking mechanism is ensured to be stably connected under dynamic load.
It effectively prevents the reel from accidentally unspinning or loosening under dynamic working conditions, ensuring the stability of the consumable supply process, avoiding wire breakage and supply interruption, and improving reliability and service life.
Smart Images
Figure CN223950514U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a wire disc equipment technical field especially relates to a detachable 3D printing consumable wire disc. BACKGROUND
[0002] With the popularization of 3D printing technology and the improvement of environmental awareness, reusable consumable wire discs gradually become the market trend. In the prior art, in order to realize the reuse of the wire disc, a detachable structure design is mainly adopted, and the locking mode mainly depends on simple elastic buckle or threaded connection. This kind of design allows users to split the wire disc into two halves to replace the internal consumable roll, aiming at reducing the long-term use cost and reducing plastic waste.
[0003] However, the above common detachable wire disc exposes significant reliability defects in actual use, especially in the harsh working conditions of high-performance 3D printers combined with automatic feeding systems (such as AMS). The simple buckle structure mainly depends on the elastic engagement force perpendicular to the disc surface, which is easily accidentally buckled due to material fatigue or instantaneous vibration under the severe and reciprocating radial and tangential impact load caused by the high-speed back-pulling of the printer nozzle or the frequent start-stop of the feeding system. While the large threaded connection may be "creep" loose under the continuous rotational inertia, eventually causing the disc body to accidentally spin open during operation, causing the consumable to break, entangle (commonly known as "blow line") or even interrupt the equipment operation. These defects are rooted in the lack of effective anti-reverse rotation and dynamic load resistance design of the locking mechanism, which cannot meet the requirements of high frequency and high reliability reuse.
[0004] Therefore, the inventor urgently needs a detachable 3D printing consumable wire disc to fundamentally solve the problem of accidental separation of existing products under dynamic working conditions. UTILITY MODEL CONTENTS
[0005] In view of the defects of the above prior art, the utility model provides a detachable 3D printing consumable wire disc, which aims to solve the reliability defect problem that the detachable 3D printing consumable wire disc in the prior art is easily accidentally spun open or loosened under the dynamic load of the high-speed back-pulling of the printer or the frequent pulling of the automatic feeding system, resulting in broken line, blown line and feeding interruption.
[0006] To achieve the above object, the utility model adopts the technical scheme: a detachable 3D printing consumable wire disc, including fixed half disc and installation half disc, the fixed half disc includes integrated female buckle installation shaft and fixed female disc, the installation half disc includes integrated male buckle installation shaft and installation male disc, the inner wall of female buckle installation shaft is alternately and symmetrically provided with at least two short arc female buckle parts and at least two long arc female buckle parts in the circumferential direction, the inner wall of male buckle installation shaft is correspondingly provided with short arc male buckle structure and long arc male buckle structure, the end of short arc female buckle part and long arc female buckle part away from fixed female disc is exposed to female buckle installation shaft and the outer arc surface of exposed part is provided with outer arc guide female buckle structure, short arc male buckle structure and long arc male buckle structure are matched to realize asymmetric rotation locking with outer arc guide female buckle structure.
[0007] Based on the above, the beneficial effects of a detachable 3D printing consumable wire disc are to solve the reliability defect problem that the detachable 3D printing consumable wire disc in the prior art is easily opened or loosened accidentally under the dynamic load of high-speed retraction of the printer or frequent pulling of the automatic feeding system, resulting in broken wire, blown wire and interrupted feeding.
[0008] 1、The utility model discloses an outer arc guide female buckle structure on the outer arc surface of the exposed part of short arc female buckle part and long arc female buckle part is matched with short arc male buckle structure and long arc male buckle structure to realize asymmetric rotation locking, and this locking mechanism is guided to the locking position through rotation after the male buckle and the female buckle are aligned, which can effectively resist rotation inertia and pulling force under the dynamic load of high-speed retraction of the printer or frequent pulling of the automatic feeding system, and prevent accidental rotation or loosening.
[0009] 2、The utility model discloses that the fixed half disc and the installation half disc are firmly connected as a whole through the asymmetric rotation locking mechanism, which ensures the structural integrity of the wire disc under dynamic working conditions, realizes stable traction of the consumable during feeding, and avoids broken wire, blown wire and interrupted feeding caused by accidental separation of the disc body.
[0010] Further, the outer arc guide female buckle structure includes a positioning buckle groove, an inclined slope guide table and a strip-shaped guide groove, the short arc male buckle structure and the long arc male buckle structure each include a positioning convex buckle and a guide strip, the guide strip slides along the strip-shaped guide groove and guides the positioning convex buckle to be clamped into the positioning buckle groove through the inclined slope guide table.
[0011] Based on the above, the beneficial effects of the positioning buckle groove are to provide a precise final locking position for the positioning convex buckle, prevent axial movement after locking due to vibration or force; the beneficial effects of the slope guide table are to guide the positioning convex buckle to climb along the slope and elastically deform when it slides to the end of the strip-shaped guide groove, and finally falls into the positioning buckle groove, realizing smooth transition and clear in-place feeling of the locking action, and the slope structure constitutes a mechanical block to prevent the positioning convex buckle from sliding out in reverse after locking; the beneficial effects of the strip-shaped guide groove are to provide a unique, pre-defined sliding channel for the guide strip on the male buckle structure, realize forced alignment and guidance of the male and female buckle during the rotation locking process, and ensure the correctness and consistency of the locking path; the beneficial effects of the positioning convex buckle are to move along the strip-shaped guide groove under the guidance of the guide strip and finally be clamped into the positioning buckle groove under the action of the slope guide table, realizing substantial mechanical interlocking with the female buckle structure, and being the key stressed component to form a anti-loose connection; the beneficial effects of the guide strip are to cooperate with the strip-shaped guide groove to constrain the male buckle installation shaft to only slide along the pre-defined track when it is rotated into the female buckle installation shaft, realize the forced rotation alignment, avoid misalignment or deflection during assembly, and ensure the accurate execution of the locking action.
[0012] Further, the arc length of the short arc-shaped male buckle structure is less than the arc length of the long arc-shaped male buckle structure, the arc length of the long arc-shaped male buckle structure is less than the distance from the strip-shaped guide groove opening of the long arc-shaped female buckle to the adjacent short arc-shaped female buckle, and greater than the distance from the strip-shaped guide groove opening of the short arc-shaped female buckle to the adjacent long arc-shaped female buckle.
[0013] Based on the above, the beneficial effects of the arc length of the short arc-shaped male buckle structure being less than the arc length of the long arc-shaped male buckle structure are to establish a clear difference in physical size between the two male buckle structures, realize that different buckle structures on the male buckle installation shaft can only match the female buckle on the female buckle installation shaft of the corresponding size, and constitute the first geometric constraint for preventing misassembly; the beneficial effects of the arc length of the long arc-shaped male buckle structure being less than the distance from the strip-shaped guide groove opening of the long arc-shaped female buckle to the adjacent short arc-shaped female buckle are to ensure that the long arc-shaped male buckle structure has enough space to rotate through and can only be aligned and entered into its only corresponding long arc-shaped female buckle; the beneficial effects of the arc length of the long arc-shaped male buckle structure being greater than the distance from the strip-shaped guide groove opening of the short arc-shaped female buckle to the adjacent long arc-shaped female buckle are to prevent the long arc-shaped male buckle structure from being incorrectly aligned and attempting to enter the strip-shaped guide groove of the short arc-shaped female buckle, because its length exceeds the available space of the entrance, thereby forcibly excluding the possibility of incorrect alignment at the beginning of assembly.
[0014] Further, the width of the strip-shaped guide groove near the slope guide table side is less than the width of the strip-shaped guide groove near the opening, and the width of the guide strip sliding into the starting end is less than the width of the guide strip sliding into the end.
[0015] Based on the above, the beneficial effect of the width of the bar-shaped guide groove near one side of the slope guide table being smaller than the width near the opening part is that it is coordinated with the width change of the guide bar, facilitating the introduction and initial alignment of the guide bar through the wider entrance at the beginning of the locking stage, and tightening and accurately restraining the guide bar through the narrowed groove when approaching the final locked position, realizing the smooth transition from easy to difficult and from loose to tight in the locking process, improving the assembly smoothness and final locking accuracy; the beneficial effect of the width of the guide bar sliding into the starting end being smaller than the width of the sliding end is that the narrower design of the front end facilitates the initial easy insertion into the wide mouth of the bar-shaped guide groove, while the wider part of the rear end forms a closer and closer fit with the gradually narrowing bar-shaped guide groove during the screwing process, increasing the effective contact area and realizing stable and firm surface contact between the bar-shaped guide groove wall at the final locked position, thereby significantly enhancing the anti-twisting and anti-loosening ability of the locking mechanism under dynamic load.
[0016] Further, the outer surface of the female buckle mounting shaft is uniformly distributed with groove arrays, which are used to cooperate with the inner side protruding structure of the consumable wire roll to prevent the wire roll from slipping.
[0017] Based on the above, the beneficial effect of the groove array is that through the groove structure uniformly distributed on the outer surface of the female buckle mounting shaft, mechanical engagement is formed with the corresponding protruding structure on the inner side of the consumable wire roll, increasing the friction coefficient and bonding force of the contact surface, effectively preventing the relative rotation and slipping of the consumable wire roll on the female buckle mounting shaft when it is consumed to the inner circle due to its own weight or the tension of the printer feeding mechanism, thereby ensuring the stability and continuity of the feeding process at the end.
[0018] Further, the fixed mother disc is provided with a wire roll mounting positioning protrusion on the side surface near the female buckle mounting shaft.
[0019] Based on the above, the beneficial effect of the wire roll mounting positioning protrusion is to provide a clear and unique circumferential positioning reference during wire roll installation, so that the fixed hole at the inner starting end of the consumable roll can be quickly and accurately aligned, realizing the standardization of the initial position of the consumable roll on the wire disc, ensuring uniform stress on the consumable during consumption, and effectively preventing winding or poor feeding caused by incorrect initial position.
[0020] Further, a drying air vent is provided on the fixed mother disc corresponding to the inner side position of the female buckle mounting shaft.
[0021] Based on the above, the beneficial effect of the drying air vent is to provide an air flow channel through the disc body on the fixed mother disc, so that external hot air can directly enter and flow through the central area surrounded by the female buckle mounting shaft, realizing the promotion of air flow from the center of the wire disc to the inner circle of the consumable during drying, thereby improving the ability to uniformly and efficiently dehumidify the consumable wound thereon.
[0022] Further, the disc surfaces of the fixed female disc and the installed male disc are provided with a plurality of window holes.
[0023] Based on the above, the beneficial effects of the window holes are that by opening a plurality of through holes on the disc surfaces of the fixed female disc and the installed male disc, a visual window is provided for the user to directly observe the remaining amount of the consumables wound on the disc body, and at the same time, the effective ventilation surface area of the entire wire disc during the drying process is increased, realizing that the user can conveniently master the remaining amount of the consumables in real time without affecting the structural strength, and significantly improving the penetration and uniformity of the hot air flow during hot air circulation drying, thereby enhancing the drying and dehumidifying efficiency.
[0024] Further, the outer diameter of the fixed half disc and the installed half disc is 200 mm, and the shaft hole size is compatible with the mainstream 3D printer feeding system.
[0025] In order to make the above features of the utility model and the purposes to be achieved more clearly, the utility model will be further described in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 is a perspective view of the utility model;
[0027] Figure 2 is a schematic view of the fixed half disc of the utility model;
[0028] Figure 3 is an enlarged schematic view of part A of Figure 2
[0029] Figure 4 is a schematic view of the installed half disc of the utility model.
[0030] BRIEF DESCRIPTION OF DRAWINGS: 1-fixed half disc, 11-female buckle installation shaft, 111-short arc female buckle part, 112-long arc female buckle part, 113-outer arc guide female buckle structure, 1131-positioning buckle groove, 1132-inclined slope guide table, 1133-strip-shaped guide groove, 114-groove array, 12-fixed female disc, 121-wire roll installation positioning protrusion, 122-drying ventilation opening, 2-installed half disc, 21-male buckle installation shaft, 211-short arc male buckle structure, 2111-positioning protruding buckle, 2112-guide strip, 212-long arc male buckle structure, 22-installed male disc. DETAILED DESCRIPTION
[0031] As Figures 1-4 As shown, a detachable 3D printing consumable wire coil includes a fixed half-coil 1 and a mounting half-coil 2, the fixed half-coil 1 includes an integrally formed female buckle mounting shaft 11 and a fixed female plate 12, the mounting half-coil 2 includes an integrally formed male buckle mounting shaft 21 and a mounting male plate 22, the inner wall of the female buckle mounting shaft 11 is alternately and symmetrically provided with at least two short arc-shaped female buckle members 111 and at least two long arc-shaped female buckle members 112, the inner wall of the male buckle mounting shaft 21 is correspondingly provided with short arc-shaped male buckle structures 211 and long arc-shaped male buckle structures 212, the end of the short arc-shaped female buckle members 111 and the long arc-shaped female buckle members 112 away from the fixed female plate 12 is exposed to the female buckle mounting shaft 11 and the outer arc surface of the exposed part is provided with an outer arc guiding female buckle structure 113, the short arc-shaped male buckle structures 211 and the long arc-shaped male buckle structures 212 are matched with the outer arc guiding female buckle structure 113 to realize asymmetric rotation locking.
[0032] In the embodiment, the outer arc guiding female buckle structure 113 includes a positioning buckle groove 1131, a slope guide table 1132 and a strip-shaped guide groove 1133, the short arc-shaped male buckle structure 211 and the long arc-shaped male buckle structure 212 each include a positioning convex buckle 2111 and a guide strip 2112, the guide strip 2112 slides along the strip-shaped guide groove 1133 and guides the positioning convex buckle 2111 to be clamped into the positioning buckle groove 1131 through the slope guide table 1132.
[0033] In the embodiment, the arc length of the short arc-shaped male buckle structure 211 is less than the arc length of the long arc-shaped male buckle structure 212, the arc length of the long arc-shaped male buckle structure 212 is less than the distance from the opening part of the strip-shaped guide groove 1133 of the long arc-shaped female buckle member 112 to the adjacent short arc-shaped female buckle member 111, and is greater than the distance from the opening part of the strip-shaped guide groove 1133 of the short arc-shaped female buckle member 111 to the adjacent long arc-shaped female buckle member 112.
[0034] In the embodiment, the width of the strip-shaped guide groove 1133 close to the slope guide table 1132 is less than the width of the strip-shaped guide groove 1133 close to the opening part, and the width of the guide strip 2112 sliding into the starting end is less than the width of the guide strip 2112 sliding into the end.
[0035] In the embodiment, the outer surface of the female buckle mounting shaft 11 is uniformly distributed with groove arrays 114, which are used to cooperate with the inner side convex structure of the consumable wire coil to prevent the wire coil from slipping.
[0036] In the embodiment, the fixed female plate 12 is provided with a wire coil mounting positioning convex block 121 on the surface of the side close to the female buckle mounting shaft 11.
[0037] In the embodiment, the fixed female plate 12 is provided with a drying air port 122 at the position corresponding to the inner side of the female buckle mounting shaft 11.
[0038] In the embodiment, the disc surfaces of the fixed female disc 12 and the installed male disc 22 are provided with a plurality of window holes.
[0039] In the embodiment, the outer diameter of the fixed half disc 1 and the installed half disc 2 is standard 200 mm, and the shaft hole size is compatible with the feeding system of mainstream 3D printers.
[0040] In summary, the specific implementation manner of the utility model is:
[0041] Firstly, the user places the to-be-installed consumable spool on the fixed half disc 1, engages the protruding structure on the inner wall of the spool with the groove array 114 on the outer surface of the female buckle mounting shaft 11 to prevent relative sliding, aligns and sets the fixing hole on the inner side of the spool on the spool mounting positioning protrusion 121 on the surface of the fixed female disc 12, and completes the initial positioning and circumferential fixing of the spool on the fixed half disc 1.
[0042] Subsequently, the assembly of the two half disc bodies is performed, the user holds the installed half disc 2, aligns the male buckle mounting shaft 21 of the installed half disc 2 with the female buckle mounting shaft 11 of the fixed half disc 1, and since the arc length of the short-arc-shaped male buckle structure 211 is different from that of the long-arc-shaped male buckle structure 212, and the length and the distance from the opening part of the corresponding female buckle piece to the adjacent special-shaped female buckle piece form a specific constraint relationship, the installed half disc 2 can only be initially aligned with the fixed half disc 1 at a unique correct circumferential angle, after alignment, the user applies axial pressure and rotates the installed half disc 2 in a predetermined direction, at this time, the positioning protruding buckle 2111 and the guide strip 2112 on the male buckle structure begin to slide into the strip-shaped guide groove 1133 on the corresponding female buckle piece.
[0043] During the rotation locking process, the guide strip 2112 slides along the strip-shaped guide groove 1133 with gradually reduced width, and the gradually increased width of the guide strip 2112 is matched with the shape of the guide groove, so that the matching becomes tighter and tighter, when rotated to the end point, the positioning protruding buckle 2111 climbs along the slope guide table 1132 and slightly elastically deforms, and finally is clamped into the positioning buckle groove 1131 after passing the highest point, a clear in-place feeling is generated, at this time, the two half disc bodies are firmly combined into a whole through the asymmetric rotation locking mechanism, and the locking state can effectively resist the loosening force of reverse rotation due to the blockage of the back side of the slope guide table 1132.
[0044] The assembled spool can be installed to the feeding system of the 3D printer, the standard 200 mm outer diameter and the compatible shaft hole size ensure the universality of the installation, during the printing process, the disc body may bear dynamic load due to high-speed retraction, but the asymmetric anti-reverse locking mechanism in the disc body can remain stable, and the user can observe the remaining amount of consumables in real time through the plurality of window holes on the disc surfaces of the fixed female disc 12 and the installed male disc 22.
[0045] When the consumables need to be dried due to moisture, the user can put the whole spool into the drying equipment. Hot air can not only pass through the window hole of the disc surface, but also directly enter the central area surrounded by the mounting shaft 11 through the drying air port 122 on the fixed mother disc 12, realizing uniform and efficient dehumidification of the consumables from the inside to the outside.
[0046] When the consumables need to be replaced, the user reversely rotates the mounting half disc 2 to overcome the clamping force between the positioning convex buckle 2111 and the positioning buckle groove 1131, so that it slides out through the inclined guide table 1132, and the guide strip 2112 retreats along the strip-shaped guide groove 1133, that is, the two half disc bodies are separated, the empty roll is taken out, and the above process is repeated to install a new consumables roll, thereby completing a complete use and maintenance cycle.
[0047] The above is only the most optimal solution embodiment of the present application, and is not used to limit the present application. Various modifications or replacements of the present application made by those skilled in the art without departing from the essence and protection scope of the present application should be within the protection scope of the present application.
Claims
1. A detachable 3D printing consumable spool, comprising a fixed half spool (1) and a mounted half spool (2), the fixed half spool (1) comprising an integrally formed female buckle mounting shaft (11) and a fixed female plate (12), the mounted half spool (2) comprising an integrally formed male buckle mounting shaft (21) and a mounted male plate (22), characterized in that: The inner wall of the female buckle mounting shaft (11) is alternately and symmetrically provided with at least two short arc-shaped female buckle pieces (111) and at least two long arc-shaped female buckle pieces (112) in the circumferential direction, and the inner wall of the male buckle mounting shaft (21) is correspondingly provided with a short arc-shaped male buckle structure (211) and a long arc-shaped male buckle structure (212), one end of the short arc-shaped female buckle piece (111) and the long arc-shaped female buckle piece (112) away from the fixed female disc (12) is exposed to the female buckle mounting shaft (11), and an outer arc guide female buckle structure (113) is arranged on the outer arc surface of the exposed part, and the short arc-shaped male buckle structure (211) and the long arc-shaped male buckle structure (212) are matched with the outer arc guide female buckle structure (113) to realize asymmetric rotation locking.
2. A detachable 3D printing consumable spool according to claim 1, characterized in that: The outer arc guide female buckle structure (113) comprises a positioning buckle groove (1131), a slope guide table (1132) and a strip-shaped guide groove (1133), the short arc-shaped male buckle structure (211) and the long arc-shaped male buckle structure (212) each comprise a positioning convex buckle (2111) and a guide strip (2112), the guide strip (2112) slides along the strip-shaped guide groove (1133) and guides the positioning convex buckle (2111) to be clamped into the positioning buckle groove (1131) through the slope guide table (1132).
3. A detachable 3D printing consumable spool according to claim 2, wherein: The arc length of the short arc-shaped male buckle structure (211) is less than the arc length of the long arc-shaped male buckle structure (212), the arc length of the long arc-shaped male buckle structure (212) is less than the distance from the opening part of the strip-shaped guide groove (1133) of the long arc-shaped female buckle piece (112) to the adjacent short arc-shaped female buckle piece (111), and greater than the distance from the opening part of the strip-shaped guide groove (1133) of the short arc-shaped female buckle piece (111) to the adjacent long arc-shaped female buckle piece (112).
4. The detachable 3D printing consumable spool of claim 2, wherein: The width of the strip-shaped guide groove (1133) near the slope guide table (1132) is less than the width of the strip-shaped guide groove (1133) near the opening part, and the width of the guide strip (2112) sliding into the starting end is less than the width of the guide strip (2112) sliding into the terminal end.
5. The detachable 3D printing consumable spool of claim 1, wherein: The outer surface of the female buckle mounting shaft (11) is uniformly distributed with a groove array (114), and the groove array (114) is used for cooperating with the inside protruding structure of the consumable wire roll to prevent the wire roll from slipping.
6. The detachable 3D printing consumable spool of claim 1, wherein: The fixed female disc (12) is provided with a wire roll mounting positioning protrusion (121) on the surface of the side close to the female buckle mounting shaft (11).
7. The detachable 3D printing consumable spool of claim 1, wherein: The fixed female disc (12) is provided with a drying air vent (122) at the position corresponding to the inner side of the female buckle mounting shaft (11).
8. The detachable 3D printing consumable spool of claim 1, wherein: The disc surfaces of the fixed half disc (1) and the mounting half disc (2) are provided with a plurality of window holes.
9. The detachable 3D printing consumable spool of claim 1, wherein: The outer diameters of the fixed half disc (1) and the mounting half disc (2) are standard 200mm, and the shaft hole size is compatible with the mainstream 3D printer feeding system.