Wire winding device and 3D printing equipment

Abstract

The utility model discloses a wire winder and 3D printing equipment relates to 3D printing technical field, wire winder includes bracing frame, wire spool, wire guide subassembly and transmission subassembly, bracing frame includes body part and extension part that connect, wire spool is rotatingly provided in body part, wire guide subassembly includes rack, incomplete gear and wire conduit, and the transmission subassembly includes rack, incomplete gear and wire conduit. The racks are arranged on the extending part in a sliding mode, the two racks are arranged at intervals, the incomplete gear is rotationally arranged in the interval between the two racks and can be meshed with one rack, the wire conduit is connected to the racks, and the transmission assembly is in transmission connection to the wire spool and the incomplete gear so as to drive the wire spool and the incomplete gear to rotate synchronously; the incomplete gear is sequentially connected with the two racks in a meshed mode, the racks drive the wire conduit to slide relative to the wire spool, the wire conduit is arranged to allow a wire of the 3D printer to penetrate through, and the wire is wound around the wire spool. The structure of the wire winder is simplified, the structural compactness of the wire winder is improved, and occupied space is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field, especially line material winder and 3D printing equipment. BACKGROUND

[0002] For the 3D printing of fused deposition modeling, the raw material is usually in the form of wire, which is heated and extruded from the extrusion nozzle to accumulate into a specific shape to realize 3D printing.

[0003] The wires are prone to winding and knotting, or some wires are randomly distributed without being wound on the wire spool, so the wires need to be re-wound on the wire spool through the wire winder to facilitate the subsequent printing process. However, the existing wire winder structure is complex, especially the structure for realizing the reciprocating winding of the wire on the wire spool is relatively complex, which not only has low assembly efficiency, but also occupies a large space in the printing equipment. SUMMARY

[0004] The main purpose of the utility model is to provide a wire winder and 3D printing equipment, which aims to simplify the structure of the wire winder, improve the compactness of the wire winder structure, and reduce the space occupation.

[0005] To achieve the above purpose, the utility model provides a wire winder applied to a 3D printer, which comprises:

[0006] A support frame comprising a body portion and an extension portion connected thereto;

[0007] A wire winding spool rotatably arranged on the body portion;

[0008] A wire guide assembly comprising at least two racks, at least one incomplete gear, and at least one wire guide tube, wherein the racks are slidingly arranged on the extension portion, the two racks are arranged at intervals, the incomplete gear is rotatably arranged in the interval between the two racks and can engage with one of the racks, and the wire guide tube is connected to at least one of the racks; and

[0009] A transmission assembly drivingly connected to the wire winding spool and the incomplete gear to drive the wire winding spool and the incomplete gear to rotate synchronously;

[0010] The incomplete gear is sequentially connected with the two racks, the racks drive the wire guide tube to slide relative to the wire winding spool, the wire guide tube is arranged for the wire of the 3D printer to pass through, and the wire is wound on the wire winding spool.

[0011] In an embodiment, one half of the outer periphery of the incomplete gear is provided with engagement teeth, and the other half of the outer periphery of the incomplete gear is not provided with engagement teeth.

[0012] The incomplete gear rotates relative to the extension part, and the part of the outer periphery of the incomplete gear provided with meshing teeth is sequentially meshingly connected with the two racks.

[0013] In an embodiment, the support frame further comprises a placement part connected to the extension part and located on both sides of the extension part with the main body part, and the placement part is configured to place the wire to be wound;

[0014] The wire guide tube comprises an inlet end and an outlet end, and the inlet end of the wire guide tube is configured to correspond to the placement part, and the outlet end of the wire guide tube is configured to correspond to the winding reel.

[0015] In an embodiment, the wire guide tube comprises a tube body and an inner tube, and the tube body is connected to at least one of the racks;

[0016] The inner tube is connected to the tube body, and the inner tube comprises the inlet end and the outlet end, and the inner tube is configured to allow the wire of the 3D printer to pass through from the inlet end to the outlet end.

[0017] In an embodiment, the tube body of the inner tube is arranged perpendicularly to the sliding direction of the rack relative to the extension part in the extension direction of the tube body;

[0018] And / or, in the extension direction of the tube body of the inner tube, the length of the inner tube is greater than the width of the extension part;

[0019] And / or, the inner tube is provided with a flared part at the inner wall of the inlet end, so that the diameter of the inner tube gradually decreases from the port of the inlet end to the tube body of the inner tube.

[0020] In an embodiment, the wire guide assembly further comprises a sliding frame, and the rack is connected to the sliding frame;

[0021] The extension part is provided with a sliding groove, and the groove body of the sliding groove extends in parallel with the rotation axis direction of the winding reel, and the sliding frame is slidingly arranged in the sliding groove.

[0022] In an embodiment, the sliding frame is provided with a clearance groove, and the clearance groove is located between the two racks;

[0023] The groove body of the clearance groove extends in the same direction as the groove body of the sliding groove, and the clearance groove is configured to avoid the incomplete gear;

[0024] And / or, the two racks that can mesh with the same incomplete gear are staggered by one to two pitch lengths in the sliding direction;

[0025] And / or, the rack is detachably connected to the sliding frame;

[0026] And / or, the wire tube is detachably connected to two of the racks arranged at intervals.

[0027] In an embodiment, the transmission assembly comprises a driving wheel and a driven wheel, the driving wheel is connected to the winding reel, the driving wheel rotates coaxially with the winding reel, the driven wheel is in transmission connection with the incomplete gear, the driving wheel and the driven wheel are in meshing transmission connection;

[0028] Or, the transmission assembly comprises a driving wheel, a driven wheel and a synchronous belt, the driving wheel is connected to the winding reel, the driving wheel rotates coaxially with the winding reel, the driven wheel is in transmission connection with the incomplete gear, the synchronous belt is sleeved on the outer wall of the driving wheel and the driven wheel to realize synchronous rotation of the driving wheel and the driven wheel.

[0029] In an embodiment, the winding reel comprises:

[0030] A roller shaft, the roller shaft is rotatably arranged in the body part;

[0031] A winding drum, the winding drum is connected to the roller shaft and rotates coaxially with the roller shaft; and

[0032] Two baffle plates, two of the baffle plates are arranged at two ends of the winding drum along the direction of the rotation axis, the baffle plates are provided with at least two wire holes, and the wire holes are arranged to fix the wire;

[0033] The winding drum is arranged to wind the wire, and the wire is located in the space between the winding drum and the two baffle plates.

[0034] The utility model also provides a 3D printing equipment, the 3D printing equipment includes the wire material winder as above, and the wire material winder is used for winding the wire on the material tray of 3D printer.

[0035] The wire winding device of the utility model discloses a wire winding device including support frame, winding reel, wire guide assembly and transmission assembly, support frame includes the body part and extension part of being connected, winding reel is rotatably arranged in the body part, wire guide assembly includes at least two racks, at least one incomplete gear and at least one wire tube, rack is slidably arranged in the extension part, two racks are arranged at intervals, incomplete gear is rotatably arranged in the interval between two racks, and can be engaged with one of the racks, wire tube is connected to at least one rack, transmission assembly is drivingly connected to winding reel and incomplete gear, to drive winding reel and incomplete gear synchronous rotation, the gear teeth of incomplete gear are sequentially meshed with two racks, each rack can drive wire tube to slide relative to winding reel when rotating, the wire of 3D printer is arranged in wire tube, and the wire is uniformly and orderly arranged on winding reel after passing through wire tube, the wire winding device is meshed with two racks by one incomplete gear to drive wire tube reciprocating winding, effectively simplifies wire winding device structure, improves the compactness of wire winding device structure and reduces space occupation. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creative labor.

[0037] Figure 1 It is the structural schematic diagram of wire winding device in an embodiment of the utility model;

[0038] Figure 2 It is the structural schematic diagram of wire winding device in an embodiment of the utility model;

[0039] Figure 3 It is the structural schematic diagram of wire winding device in an embodiment of the utility model;

[0040] Figure 4 It is the structural schematic diagram of wire winding device in an embodiment of the utility model;

[0041] Figure 5 It is the structural schematic diagram of wire guide assembly in an embodiment of the utility model.

[0042] EXPLANATION OF DRAWINGS:

[0043] 100 wire winding device; 1 support frame; 11 body part; 12 extension part; 121 sliding groove; 13 placing part; 2 winding reel; 21 roller shaft; 22 winding drum; 23 baffle; 3 wire guide assembly; 31 rack; 32 incomplete gear; 321 meshing tooth; 33 wire guide tube; 331 tube body; 332 inner tube; 3321 inlet end; 3322 outlet end; 4 transmission assembly; 41 driving wheel; 42 driven wheel.

[0044] The purposes, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0046] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0047] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0048] Please refer to Figures 1 to 5As shown, the utility model provides a kind of wire winding device 100 applied to 3D printer, wire winding device 100 includes support frame 1, reel 2, wire assembly 3 and transmission assembly 4, support frame 1 includes the body portion 11 and extension portion 12 connected, reel 2 is rotationally arranged in body portion 11, wire assembly 3 includes at least two racks 31, at least one incomplete gear 32 and at least one wire tube 33, rack 31 is slidably arranged in extension portion 12, wherein two racks 31 are arranged at intervals, incomplete gear 32 is rotationally arranged in the interval between two racks 31, and can be engaged with one of rack 31, wire tube 33 is connected to at least one rack 31, transmission assembly 4 is drivingly connected to reel 2 and incomplete gear 32, to drive reel 2 and incomplete gear 32 synchronous rotation;Incomplete gear 32 is sequentially meshed with two racks 31, rack 31 drives wire tube 33 to slide relative to reel 2, wire tube 33 is arranged to be provided for the wire of 3D printer, wire is wound on reel 2.

[0049] In the embodiment, the wire winding device 100 is applied to 3D printing equipment, for arranging the wire of 3D printing equipment, and supplying wire when 3D printing equipment works, specifically, the wire can be uniformly wound on the wire winding device 100, so as to ensure that the wire can smoothly enter the extrusion head of the 3D printing equipment, the wire winding device 100 includes support frame 1, reel 2, wire assembly 3 and transmission assembly 4, wherein the support frame 1 is a structural support component of the wire winding device 100, for mounting and supporting the reel 2, the wire assembly 3 and the transmission assembly 4, the support frame 1 can be a support plate, a support table, a support seat, etc., and can be a mounting rack, a base frame, etc., which is not limited here.

[0050] In the embodiment, the support frame 1 includes the body portion 11 and the extension portion 12, the body portion 11 is the main structure of the support frame 1, and the extension portion 12 is connected to the body portion 11 and extends outward from the body portion 11, the body portion 11 and the extension portion 12 can be integrally formed, or can be detachably connected in a split body, such as clamping, screwing, etc., and the reel 2 is rotationally arranged on the body portion 11, such as setting a rotating shaft on the body portion 11, the reel 2 is provided with a rotating hole, and the hole shaft is matched to rotate the reel 2 relative to the body portion 11, and at the same time, the wire assembly 3 is arranged on the extension portion 12.

[0051] In the embodiment, the winding disc 2 is a circular disc structure to facilitate winding of the wire during rotation, the wire guide assembly 3 comprises at least two racks 31, at least one incomplete gear 32 and at least one wire guide tube 33, wherein each two racks 31 are arranged at intervals on the extension 12, and each rack 31 is slidably arranged relative to the extension 12, and each two racks 31 are provided with an incomplete gear 32, the incomplete gear 32 can be engaged with one of the racks 31 in sequence to drive the two racks 31 to slide relative to the extension 12 in sequence, and the wire guide tube 33 is connected to at least one rack 31 to drive the wire guide tube 33 to move synchronously when the rack 31 slides.

[0052] It can be understood that the incomplete gear 32 is a gear with engagement teeth 321 on the outer periphery, and part of the gear does not have engagement teeth 321, and the engagement teeth 321 of the two racks 31 are arranged oppositely, defining the two racks 31 as a first rack 31 and a second rack 31, and when the engagement teeth 321 of the incomplete gear 32 are engaged with the first rack 31 during rotation of the incomplete gear 32 about the axis, the rotation of the incomplete gear 32 drives the first rack 31 to slide linearly, and at this time, the second rack 31 faces the side of the incomplete gear 32 without engagement teeth 321, so that no engagement occurs between them, and no relative movement occurs.

[0053] Further, during continuous rotation of the incomplete gear 32, the engagement teeth 321 of the incomplete gear 32 gradually disengage from the first rack 31 and gradually engage with the second rack 31, thereby driving the second rack 31 to slide linearly, and at this time, the first rack 31 faces the side of the incomplete gear 32 without engagement teeth 321, and the engagement movement between them stops, and the above is achieved by the incomplete gear 32 engaging with the two racks 31 in sequence to realize intermittent sliding of the two racks 31.

[0054] It can be understood that the wire guide tube 33 is arranged to guide the wire to pass through and wind on the winding disc 2, and the wire guide tube 33 is arranged on at least one rack 31, so that the rack 31 can drive the wire guide tube 33 to slide linearly relative to the winding disc 2 under the drive of the incomplete gear 32, so that the wire guide tube 33 can guide the wire to be evenly wound on the winding disc 2 during sliding, thereby ensuring that the wire is evenly and flatly arranged on each layer of the winding disc 2, improving the regularity of winding of the wire, and ensuring smooth wire output of the winding disc 2 in the later stage.

[0055] It can be understood that during the rotation of the incomplete gear 32 around the fixed shaft, the rotation directions of the two racks 31 driven by the incomplete gear 32 are opposite, that is, the sliding directions of the two racks 31 relative to the winding reel 2 are opposite and parallel, and the wire tube 33 can be connected to the two racks 31. Each rack 31 can drive the wire tube 33 to move when sliding, so that the wire tube 33 can reciprocate relative to the winding reel 2, thereby achieving automatic reversing of winding. That is, after uniformly laying a layer of wire, automatic reversing and starting to lay the next layer of wire can be realized to wind layer by layer, thereby improving the winding efficiency.

[0056] In the embodiment, the wire winding device 100 further comprises a transmission assembly 4. The transmission assembly 4 can be a gear set transmission structure, or a synchronous belt or chain transmission structure. The transmission assembly 4 is transmissionally connected to the winding reel 2 and the incomplete gear 32, so that the winding reel 2 and the incomplete gear 32 can be synchronously rotated. When the incomplete gear 32 drives the racks 31 to slide and indirectly drives the wire tube 33 to slide, the winding reel 2 can be synchronously rotated, so that the wire can be uniformly wound on the winding reel 2 during the translation of the wire tube 33, thereby improving the efficiency and regularity of winding.

[0057] The wire winding device 100 comprises a support frame 1, a winding reel 2, a wire assembly 3, and a transmission assembly 4. The support frame 1 comprises a body portion 11 and an extension portion 12 connected to each other. The winding reel 2 is rotationally arranged on the body portion 11. The wire assembly 3 comprises at least two racks 31, at least one incomplete gear 32, and at least one wire tube 33. The racks 31 are slidingly arranged on the extension portion 12. The two racks 31 are arranged in a spaced manner. The incomplete gear 32 is rotationally arranged in the space between the two racks 31 and can be engaged with one of the racks 31. The wire tube 33 is connected to at least one of the racks 31. The transmission assembly 4 is transmissionally connected to the winding reel 2 and the incomplete gear 32 to synchronously rotate the winding reel 2 and the incomplete gear 32. The teeth of the incomplete gear 32 are sequentially engaged with the two racks 31. Each rack 31 can drive the wire tube 33 to slide relative to the winding reel 2 when rotating. The wire of the 3D printer is arranged in the wire tube 33 and uniformly and orderly wound on the winding reel 2 after passing through the wire tube 33. The wire winding device 100 drives the wire tube 33 to reciprocally wind by the engagement of the incomplete gear 32 with the two racks 31, thereby effectively simplifying the structure of the wire winding device 100, improving the compactness of the structure of the wire winding device 100, and reducing the space occupation.

[0058] In an embodiment, as shown in FIG. 1, the wire winding device 100 comprises a support frame 1, a winding reel 2, a wire assembly 3, and a transmission assembly 4. Figure 4 and Figure 5As shown, half of the outer periphery of the incomplete gear 32 is provided with the meshing teeth 321, and the other half of the outer periphery of the incomplete gear 32 is not provided with the meshing teeth 321; the incomplete gear 32 rotates relative to the extension 12, and the half of the outer periphery of the incomplete gear 32 provided with the meshing teeth 321 is sequentially engaged with the two racks 31.

[0059] It can be understood that half of the outer periphery of the incomplete gear 32 is provided with the meshing teeth 321, and the other half of the outer periphery of the incomplete gear 32 is not provided with the meshing teeth 321, so that during the rotation of the incomplete gear 32 relative to the extension 12, the half of the incomplete gear 32 provided with the meshing teeth 321 can be engaged with the rack 31 to drive the rack 31 to slide linearly, and the half of the incomplete gear 32 not provided with the meshing teeth 321 cannot be engaged with the rack 31.

[0060] Further, the teeth of the two racks 31 are oppositely arranged, and the incomplete gear 32 is arranged between the two racks 31; during the rotation of the incomplete gear 32, the meshing teeth 321 of the incomplete gear 32 are first engaged with one of the two racks 31 to drive the rack 31 to slide linearly, and then are engaged with the other of the two racks 31 to drive the rack 31 to slide in the opposite direction.

[0061] It can be understood that the incomplete gear 32 provided with the meshing teeth 321 in one part can drive the two racks 31 to slide in parallel and opposite directions to realize automatic reversing of the two racks 31, so as to drive the wire tube 33 to automatically reverse, so that the wire material passing out of the wire tube 33 can be uniformly and closely laid on the winding disc 2, and after winding one layer of the wire material, the automatic reversing starts to wind a new layer, which effectively improves the winding efficiency on the basis of simplifying the reversing structure.

[0062] In an embodiment, as shown in the drawings, Figures 1 to 4 The support frame 1 further includes a placing portion 13 connected to the extension 12 and located on both sides of the main body portion on the extension 12, and the placing portion 13 is arranged to place the wire material to be wound; the wire tube 33 includes an inlet end 3321 and an outlet end 3322, and the inlet end 3321 of the wire tube 33 is arranged corresponding to the placing portion 13, and the outlet end 3322 of the wire tube 33 is arranged corresponding to the winding disc 2.

[0063] It can be understood that the support frame 1 further includes the placing portion 13 connected to the extension 12, and the placing portion 13 can be a placing rack or a placing table, and the placing portion 13 is located on both sides of the main body portion on the extension 12, wherein the placing portion 13 is used to place the wire material to be wound, such as the scattered and wound wire material, so that the wire tube 33 arranged on the extension 12 is located between the placing portion 13 and the main body portion, that is, between the wire tube 33 and the winding disc 2.

[0064] The wire tube 33 comprises an inlet end 3321 and an outlet end 3322, the inlet end 3321 is arranged corresponding to the winding wire material of the placing part 13, and the outlet end 3322 is arranged corresponding to the winding disc 2 of the main body part, the winding wire material enters the wire tube 33 from the inlet end 3321 of the wire tube 33 and passes out from the outlet end 3322 of the wire tube 33, so as to preliminarily arrange the winding wire material, and the winding wire material is single-threaded from the wire tube 33 and then wound on the winding disc 2.

[0065] In an embodiment, as shown in Figure 4 and Figure 5 The wire tube 33 comprises a tube body 331 connected to the at least one rack 31 and an inner tube 332 connected to the tube body 331, the inner tube 332 comprises the inlet end 3321 and the outlet end 3322, and the inner tube 332 is arranged to pass the wire material of the 3D printer from the inlet end 3321 to the outlet end 3322.

[0066] In the embodiment, the tube body 331 is a main supporting part of the wire tube 33, and the tube body 331 can be the support frame 1 or the support table, the tube body 331 is connected to the at least one rack 31, preferably, the tube body 331 can be connected to two racks 31 arranged oppositely and in parallel at the same time, so that the two racks 31 can drive the tube body 331 to reciprocate when sliding in opposite directions, and the inner tube 332 is a tubular structure, which can be integrally formed with the tube body 331 or detachably connected to the tube body 331.

[0067] The inner tube 332 comprises the inlet end 3321 and the outlet end 3322, so that the winding wire material located in the placing part 13 can extend into the inlet end 3321 of the inner tube 332 and pass out from the outlet end 3322 of the inner tube 332, to provide the wire material for the winding disc 2, and in the process of continuously winding the winding disc 2, the inner tube 332 can also reciprocate with the tube body 331 to realize winding.

[0068] In an embodiment, the tube body of the inner tube 332 extends in a direction perpendicular to the sliding direction of the rack 31 relative to the extension part 12; it can be understood that the sliding direction of the rack 31 relative to the extension part 12 is perpendicular to the interval direction between the placing part 13 and the main body part, that is, perpendicular to the tube body extension direction of the inner tube 332, so that when the wire material passes through the inner tube 332, it also moves along the sliding direction of the rack 31, and the movement in the two directions combines to make the wire material wind on the winding disc 2 one by one and uniformly, that is, the winding of the wire material can be realized by using the simplified structure of the incomplete gear 32 and the rack 31, which effectively simplifies the structure of the wire winding device 100, improves the structural compactness of the wire winding device 100 and reduces the space occupation.

[0069] Optionally, the length of the inner tube 332 is greater than the width of the extension portion 12 along the tube extension direction of the inner tube 332; it can be understood that the length of the inner tube 332 is greater than the width of the extension portion 12 along the tube extension direction of the inner tube 332, that is, from the placement portion 13 to the main body portion, so that the wire passes through the inner tube 332 with a longer length when winding on the winding disc 2 from the placement portion 13 to the main body portion, to ensure that the wire can be fully unwound to form a single wire, and also helps the wire to quickly pass out of the outlet end 3322 of the inner tube 332 to be wound on the winding disc 2, and the longer inner tube 332 also ensures the stability of the wire when winding quickly.

[0070] Optionally, the inner tube 332 is provided with a flared portion at the inner wall of the inlet end 3321, so that the tube diameter of the inner tube 332 gradually decreases from the port of the inlet end 3321 to the tube body of the inner tube 332. It can be understood that the inner tube 332 is provided with a flared portion at the inlet end 3321, that is, the end facing the placement portion 13, which is arranged in a diverging manner towards the placement portion 13, so that the tube diameter of the inner tube 332 gradually decreases from the inlet end 3321 to the outlet end 3322. In this way, the wire in the placement portion 13 can be easily and quickly stored and entered into the inner tube 332, improving the smoothness of the wire extending into the inner tube 332 during movement, reducing the jamming of the wire at the inlet end 3321, and thus effectively improving the efficiency of winding.

[0071] In an embodiment, the wire assembly 3 further comprises a sliding frame, and the rack 31 is connected to the sliding frame; the extension portion 12 is provided with a sliding groove 121, the groove body of the sliding groove 121 extends in parallel with the rotation axis direction of the winding disc 2, and the sliding frame is slidingly arranged in the sliding groove 121.

[0072] In the embodiment, the extension portion 12 is provided with a sliding groove 121, the groove body of the sliding groove 121 extends in a straight line direction, and the groove body extension direction of the sliding groove 121 is parallel to the rotation axis direction of the winding disc 2; the wire assembly 3 further comprises a sliding frame, the sliding frame is slidingly arranged in the sliding groove 121, and the incomplete gear 32 is rotationally arranged on the bottom wall of the sliding groove 121; the rack 31 is connected to the sliding frame, for example, the sliding frame is slidingly arranged on the bottom wall of the sliding groove 121, two racks 31 are arranged on the side of the sliding frame away from the bottom wall of the sliding groove 121, and the two racks 31 are arranged in parallel and spaced apart in a direction perpendicular to the groove body extension direction of the sliding groove 121, and the incomplete gear 32 is meshingly connected with one of the two racks 31.

[0073] It can be understood that the slide frame is arranged, and the two racks 31 are arranged on the slide frame, so that when each rack 31 is driven to move along the groove direction of the sliding groove 121, the slide of the slide frame in the sliding groove 121 can also drive the other rack 31 to move together. Taking the first rack 31 and the second rack 31 as an example, when the incomplete gear 32 drives the first rack 31 to move, the first rack 31, the slide frame and the second rack 31 move together along the sliding groove 121, and after the engagement of the incomplete gear 32 and the first rack 31 is ended, the engagement teeth 321 of the incomplete gear 32 can continue to engage with the second rack 31, while driving the second rack 31, the slide frame and the first rack 31 to move together along the sliding groove 121 in the opposite direction, so as to realize the reciprocating movement of the wire assembly 3 in the sliding groove 121, so as to drive the wire tube 33 to reciprocate, thereby uniformly winding the wire on the winding disc 2.

[0074] In an embodiment, the slide frame is provided with a clearance groove between the two racks 31; the groove body of the clearance groove extends in the same direction as the groove body of the sliding groove 121, and the clearance groove is arranged to avoid the incomplete gear 32; it can be understood that the clearance groove is a through groove in the same direction as the groove body of the sliding groove 121, that is, the clearance groove penetrates up and down, and the incomplete gear 32 is arranged to rotate in the bottom wall of the sliding groove 121, and the incomplete gear 32 is located between the two racks 31. Therefore, when the slide frame slides in the sliding groove 121, the rotating shaft of the incomplete gear 32 is located in the clearance groove, and during the sliding of the slide frame, the clearance groove always avoids the incomplete gear 32, so as to ensure the normal sliding of the slide frame.

[0075] Alternatively, the two racks 31 that can engage with the same incomplete gear 32 are staggered by one to two tooth pitches in the sliding direction; in this embodiment, the two racks 31 that can engage with the same incomplete gear 32 are staggered by a certain distance in the groove body extension direction of the sliding groove 121, that is, the two racks 31 project on each other in a direction perpendicular to the groove body extension direction of the sliding groove 121, and the projection only covers part of the rack 31, and the two racks 31 are staggered by one to two tooth pitches.

[0076] It can be understood that by staggering the two racks 31 by one to two tooth pitches in the sliding direction, the incomplete gear 32 can continuously and smoothly engage with the other rack 31 after the engagement with one of the racks 31 is completed, so as to ensure the smoothness of the engagement of the incomplete gear 32 and the two racks 31, and the continuity and smoothness of the overall transmission of the wire assembly 3, and the stability of the overall transmission and the movement of the wire tube 33.

[0077] Optionally, the rack 31 is detachably connected to the sliding frame; and optionally, the wire tube 33 is detachably connected to the two racks 31 which are spaced apart. It can be understood that the rack 31 is detachably connected to the sliding frame, such as snap connection, bolt connection, plug-in connection and the like, so as to replace and maintain the rack 31, and avoid disassembling the whole wire assembly 3. Meanwhile, the wire tube 33 and the two racks 31 can also be detachably connected, such as snap connection, bolt connection, plug-in connection and the like, so as to replace the wire tube 33.

[0078] In an embodiment, as shown in Figure 1 and Figure 2 The transmission assembly 4 comprises a driving wheel 41 and a driven wheel 42. The driving wheel 41 is connected to the winding reel 2 and rotates coaxially with the winding reel 2. The driven wheel 42 is in transmission connection with the incomplete gear 32. The driving wheel 41 and the driven wheel 42 are in meshing transmission connection.

[0079] Alternatively, the transmission assembly 4 comprises a driving wheel 41, a driven wheel 42 and a synchronous belt. The driving wheel 41 is connected to the winding reel 2 and rotates coaxially with the winding reel 2. The driven wheel 42 is in transmission connection with the incomplete gear 32. The synchronous belt is sleeved on the outer wall of the driving wheel 41 and the driven wheel 42, so as to realize synchronous rotation of the driving wheel 41 and the driven wheel 42.

[0080] In the embodiment, the driving wheel 41 and the driven wheel 42 can be gears. Meanwhile, gears which are in meshing connection with the driving wheel 41 and / or the driven wheel 42 are arranged on the winding reel 2 and the incomplete gear 32. The transmission assembly 4 further comprises a driving member. The output end of the driving member is connected to the driving wheel 41, so as to drive the driving wheel 41 to rotate. In the process of rotation, the driving wheel 41 drives the driven wheel 42 to rotate, so as to drive the winding reel 2 and the incomplete gear 32 to rotate synchronously.

[0081] In another embodiment of the utility model, the driving wheel 41 and the driven wheel 42 can also be synchronous wheels. The transmission assembly 4 further comprises a synchronous belt. The driving wheel 41 is connected to the winding reel 2 and rotates coaxially with the winding reel 2. The driven wheel 42 is in transmission connection with the incomplete gear 32. The output end of the driving member is connected to the driving wheel 41, so as to drive the winding reel 2 and the incomplete gear 32 to rotate synchronously.

[0082] Further, the transmission assembly 4 further comprises a worm and a worm wheel, the worm wheel is in meshing connection with the worm, the worm is connected to the driven wheel 42 and rotates coaxially with the driven wheel 42, the worm wheel is connected to the incomplete gear 32 and rotates coaxially with the incomplete gear 32, the driven wheel 42 is driven to rotate by the driving wheel 41, the worm is driven to rotate by the driven wheel 42, so as to drive the worm wheel and the incomplete gear 32 to rotate, so as to realize the synchronous rotation of the winding disc 2 and the incomplete gear 32, in the process of rotation of the incomplete gear 32, the two racks 31 are sequentially meshed with each other, so that the wire tube 33 relatively slides with the winding disc 2, so as to uniformly wind the wire on the winding disc 2.

[0083] In an embodiment, as shown in Figure 3 and Figure 4 Figure 5 The winding disc 2 comprises a roller shaft 21, a winding drum 22 and two baffle plates 23, the roller shaft 21 is rotatably arranged in the body part 11, the winding drum 22 is connected to the roller shaft 21 and rotates coaxially with the roller shaft 21, the two baffle plates 23 are arranged at the two ends of the winding drum 22 along the rotation axis direction, the baffle plate 23 is provided with at least two threading holes, the threading holes are arranged to fix the wire; the winding drum 22 is arranged to wind the wire, and the wire is located in the space between the winding drum 22 and the two baffle plates 23.

[0084] In the embodiment, the body part 11 of the support frame 1 comprises a base and two stands, the two stands are oppositely and spacedly arranged, each stand is provided with a mounting hole on the side away from the base, the mounting hole can be an open hole connected with the external space, or can be a closed hole, which is not limited here, the mounting hole has a circular arc bottom wall, the roller shaft 21 is rotatably arranged in the two mounting holes along the rotation axis direction, so that the roller shaft 21 is rotatably arranged between the two stands, the winding drum 22 has a hollow cavity, the roller shaft 21 is arranged in the hollow cavity of the winding drum 22, and the roller shaft 21 rotates coaxially with the winding drum 22.

[0085] At the same time, the two baffle plates 23 are arranged at the two ends of the winding drum 22 along the rotation axis, and the two baffle plates 23 are located between the two stands, each baffle plate 23 is arranged adjacent to a stand, so that the drum wall of the winding drum 22 and the two baffle plates 23 form a winding space, the wire passing out of the wire tube 33 is wound in the winding space, further, each baffle plate 23 is provided with at least two threading holes, the threading holes are arranged at the edge of the baffle plate 23 away from the winding drum 22, and the at least two threading holes are arranged adjacent to each other.

[0086] It can be understood that after the wire is completely wound in the winding space, the end of the wire can be arranged in one threading hole, and then bent and arranged in another adjacent threading hole, so that the end of the wire is fixed on the baffle plate 23 of the winding disc 2, and the wire is uniformly and fixedly wound on the winding disc 2, so as to avoid the wire wound in the winding space from being scattered or entangled again.

[0087] The utility model discloses still a kind of 3D printing equipment, the 3D printing equipment includes wire winding device 100 as described above, and wire winding device 100 is used to wind wire on the tray of 3D printer.The specific structure of the wire winding device 100 refers to the foregoing embodiment, since the present 3D printing equipment adopts all technical solutions of the foregoing all embodiments, at least has all beneficial effects brought by the technical solutions of the foregoing embodiments, here no longer one by one elaboration.

[0088] The above is only the exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and drawing contents, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A wire winder for use in a 3D printer, characterized in that, The wire winding device comprises: a support frame comprising a body portion and an extension portion; a winding disc rotatably arranged on the body portion; a wire guide assembly comprising at least two racks, at least one incomplete gear and at least one wire tube, the racks are slidingly arranged on the extension portion, two of the racks are arranged at intervals, the incomplete gear is rotatably arranged in the interval between the two racks and can be engaged with one of the racks, and the wire tube is connected to at least one of the racks; and a transmission assembly drivingly connected to the winding disc and the incomplete gear to drive the winding disc and the incomplete gear to rotate synchronously. The incomplete gear is sequentially engaged with the two racks, the racks drive the wire tube to slide relative to the winding disc, the wire tube is arranged for the wire of a 3D printer to pass through, and the wire is wound on the winding disc.

2. The wire wrapper of claim 1, wherein, Half of the outer periphery of the incomplete gear is provided with engagement teeth, and the other half of the outer periphery of the incomplete gear is not provided with engagement teeth. The incomplete gear rotates relative to the extension portion, and the portion of the outer periphery of the incomplete gear provided with engagement teeth is sequentially engaged with the two racks.

3. The wire wrapper of claim 1, wherein, The support frame further comprises a placement portion connected to the extension portion and located on both sides of the body portion relative to the extension portion, and the placement portion is arranged for placing the wire to be wound. The wire tube comprises an inlet end and an outlet end, the inlet end of the wire tube is arranged corresponding to the placement portion, and the outlet end of the wire tube is arranged corresponding to the winding disc arranged on the body portion.

4. The wire wrapper of claim 3 wherein, The wire tube comprises a tube body and an inner tube, and the tube body is connected to at least one of the racks. The inner tube is connected to the tube body, and the inner tube comprises an inlet end and an outlet end, and is arranged for the wire of a 3D printer to pass through from the inlet end to the outlet end.

5. The wire wrapper of claim 4 wherein, The tube body of the inner tube extends in a direction perpendicular to the sliding direction of the racks relative to the extension portion. And / or, along the tube body extension direction of the inner tube, the length of the inner tube is greater than the width of the extension portion. And / or, the inner tube is provided with a flared portion at the inner wall of the inlet end, so that the tube diameter of the inner tube gradually decreases from the port of the inlet end to the tube body of the inner tube.

6. The wire wrapper of claim 1 wherein, The wire guide assembly further comprises a sliding frame, and the racks are connected to the sliding frame. The extension portion is provided with a sliding groove, the groove body of the sliding groove extends in a direction parallel to the rotation axis direction of the winding disc, and the sliding frame is slidingly arranged in the sliding groove.

7. The wire wrapper of claim 6 wherein, The sliding frame is provided with a clearance groove between the two racks. The clearance groove has the same groove body extension direction as the sliding groove, and is arranged to avoid the incomplete gear. And / or, the two racks that can be engaged with the same incomplete gear are staggered by one to two tooth pitches in the sliding direction. And / or, the racks are detachably connected to the sliding frame. And / or, the wire tube is detachably connected to the two racks arranged at intervals.

8. The wire wrapper of any of claims 1 to 7, wherein, The transmission assembly comprises a driving wheel and a driven wheel, the driving wheel is connected to the winding reel, the driving wheel rotates coaxially with the winding reel, the driven wheel is in transmission connection with the incomplete gear, and the driving wheel and the driven wheel are in meshing transmission connection; Or, the transmission assembly comprises a driving wheel, a driven wheel and a synchronous belt, the driving wheel is connected to the winding reel, the driving wheel rotates coaxially with the winding reel, the driven wheel is in transmission connection with the incomplete gear, and the synchronous belt is sleeved on the outer wall of the driving wheel and the driven wheel to realize synchronous rotation of the driving wheel and the driven wheel.

9. The wire wrapper of any of claims 1 to 7, wherein, The winding reel comprises: a roller shaft, the roller shaft is rotatably arranged on the body part; a winding drum, the winding drum is connected to the roller shaft and rotates coaxially with the roller shaft; and two baffles, the two baffles are arranged at the two ends of the winding drum along the rotation axis direction, the baffles are provided with at least two wire holes, and the wire holes are arranged to fix the wire; The winding drum is arranged to wind the wire, and the wire is located in the space between the winding drum and the two baffles.

10. A 3D printing device, characterized by The 3D printing equipment comprises the wire winder according to any one of claims 1 to 9, and the wire winder is used for winding the wire on the material tray of the 3D printer.

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