CN107415226B - Feeding system and feeding method of 3D printer - Google Patents
Feeding system and feeding method of 3D printer Download PDFInfo
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- CN107415226B CN107415226B CN201710537455.0A CN201710537455A CN107415226B CN 107415226 B CN107415226 B CN 107415226B CN 201710537455 A CN201710537455 A CN 201710537455A CN 107415226 B CN107415226 B CN 107415226B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention discloses a feeding system and a feeding method of a 3D printer, wherein the feeding system comprises a motor, a wire feeding swing frame, a wire feeding wheel, a pressing wheel and an adjusting device; the wire feeding wheel is arranged on a driving shaft of the motor; the wire feeding swing frame is rotatably arranged on the motor, and a wire feeding channel is arranged in the wire feeding swing frame; the pinch roller and the adjusting device are arranged at two ends of the wire feeding swing frame; the pinch roller and the wire feeding wheel are distributed in parallel, and a feeding path is formed between the pinch roller and the wire feeding wheel and corresponds to the wire feeding channel; the adjusting device comprises an adjusting component and a positioning component, wherein the positioning component is provided with a positioning plane or a positioning curved surface, and the adjusting component is provided with an adjusting plane which is matched with the positioning plane and has a height difference, or is provided with an adjusting curved surface which is matched with the positioning curved surface and has a height difference. The invention is suitable for various spray heads and is suitable for spray heads with a remote wire feeding structure, the distance between the pinch roller and the wire feeding wheel is changed by adjusting the adjusting device of the feeding system, the requirement of printing various types of wires is met, and different types of soft wires are compatible.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a feeding system and a feeding method of a 3D printer.
Background
The 3D printing technology (or the rapid prototyping technology) is rapidly developed due to the advantages of the 3D printing technology over the existing subtractive processing technology, and is formed by stacking, printing and shaping the 3D printing equipment layer by layer, and finally, a three-dimensional model is formed.
The feeding system of the 3D printer plays a vital role in printing and forming, and the stable and efficient feeding structure can meet the requirement of more functions of 3D printing. In the prior art, the interval between wire feeding wheel and pinch roller of feeding system is fixed, but the diameter of general printing consumable silk is 1.75mm, but the hardness of different types of silk is different, the functionality that presents is also different, the silk type is various, along with the research and development of emerging material, the hardness of material can great change, multiple types of soft material appear, when the hardness reduces to certain value, traditional feeding system can not provide sufficient feeding force, melt the very stable feeding liquefier of printing consumable, and then print the shaping, so provide one kind can print multiple type consumable, do not receive the feeding system of consumable hardness constraint, and then design printing nozzle is the demand in market, also be the drive of technique.
Disclosure of Invention
In order to solve the problems, the invention provides a feeding system of a 3D printer, which can be used for various spray heads and is suitable for the spray heads of a remote wire feeding structure, and the distance between a pinch roller and a wire feeding wheel is changed by adjusting an adjusting device of the feeding system, so that the requirement of printing various types of wires is met, and different types of soft wires are compatible; the invention also provides a wire feeding method of the 3D printer, which changes the distance between the pinch roller and the wire feeding wheel by setting different gears, thereby achieving the purpose of printing various types of wires.
In a first aspect, the invention provides a feeding system of a 3D printer, which comprises a motor, a wire feeding swing frame, a wire feeding wheel, a pressing wheel and an adjusting device; the wire feeding wheel is arranged on a driving shaft of the motor; the wire feeding swing frame is rotatably arranged on the motor through a fixed shaft, and a wire feeding channel is formed in the wire feeding swing frame; the pinch roller and the adjusting device are arranged at two ends of the wire feeding swing frame; the pinch roller and the wire feeding wheel are distributed in parallel, and a path for feeding printing consumables is formed between the pinch roller and the wire feeding wheel and corresponds to a wire feeding channel in the wire feeding swing frame; the adjusting device comprises an adjusting assembly and a positioning assembly, wherein the positioning assembly is provided with a positioning plane or a positioning curved surface, and the adjusting assembly is provided with a plurality of adjusting planes which are matched with the positioning plane and have height differences from the central shaft of the adjusting assembly, or a plurality of adjusting curved surfaces which are matched with the positioning curved surface and have height differences from the end face of the adjusting assembly.
In the technical scheme, the adjusting assembly is provided with a plurality of adjusting planes or adjusting curved surfaces with height differences from the center of the adjusting assembly, and the heights of the wire feeding swing frames at the ends of the adjusting device are changed by changing the adjusting planes or adjusting curved surfaces of the adjusting assembly.
On the basis of the first aspect, the adjusting component is a boss cylinder and is rotatably arranged on the wire feeding swing frame, the big end of the boss cylinder is provided with at least 2 adjusting curved surfaces with height difference from the end surface of the boss cylinder, and the boss cylinder is positioned by an auxiliary clamping piece; the positioning component is a positioning cylinder and is fixed on the motor, the side surface of the positioning component is a positioning curved surface, and the central axis of the positioning cylinder is perpendicular to the central axis of the boss cylinder. The distance from the top surface of each adjusting curved surface to the end surface of the big end is uniformly increased, each adjusting curved surface is a gear, and two adjacent adjusting curved surfaces can be smoothly transited, so that the gear can be conveniently adjusted.
Preferably, the side surface of the boss cylinder is provided with at least 2 fixing holes corresponding to the adjusting curved surface, the auxiliary clamping piece is a top bead, at least half of the top bead is elastically installed in the wire feeding swing frame, and the other part of the top bead is movably clamped in the fixing holes.
Preferably, a straight slot or a cross slot is formed in the end face of the small end of the boss cylinder, or the small end is fixedly connected with a straight slot or a cross slot screw, and the boss cylinder can be adjusted to adjust the gear of the curved surface by rotating the boss cylinder through a screwdriver.
On the basis of the first aspect, the adjusting component is an adjusting rod which is rotatably inserted into the wire feeding swing frame, and at least 2 adjusting planes which are parallel to the central axis of the adjusting component and have a height difference from the central axis of the adjusting component are arranged on the adjusting component; the positioning component is a positioning stop block and is fixed on the motor, and a positioning plane is arranged on the side surface of the positioning component; the central axis of the adjusting rod is perpendicular to the central axis of the positioning stop block.
Preferably, a straight groove or a cross groove is formed in the end face of the outer end of the adjusting rod, so that the adjusting plane on the adjusting rod can be conveniently changed, a circle of positioning groove is formed in the side face of the inner end of the adjusting rod, and a clamping piece is arranged in the positioning groove to fix the adjusting rod on the wire feeding swing frame, so that the adjusting rod is prevented from moving axially.
On the basis of the first aspect, the adjusting component is an adjusting screw and is rotatably arranged on the motor, and at least 2 adjusting planes which are parallel to the central axis of the adjusting component and have a height difference from the central axis are arranged on the adjusting component; the positioning component is a positioning rod and is fixed on the wire feeding swing frame, and a positioning plane matched with the adjusting plane is arranged on the positioning component; the central axis of the adjusting screw is vertical to the central axis of the positioning rod.
On the basis of any one of the above technical solutions, preferably, a wire feeding channel on the wire feeding swing frame is located at one side of a plane formed by the pressing wheel central shaft and the wire feeding wheel central shaft, a wire feeding tube is arranged at the other side of the plane formed by the pressing wheel central shaft and the wire feeding wheel central shaft, the wire feeding tube is located in the axial direction of the wire feeding channel, one end of the wire feeding tube, which is close to the wire feeding wheel, is fixed by a wire feeding tube positioning sleeve, and the other end of the wire feeding tube is sequentially connected with the liquefier and the nozzle.
On the basis of any one of the above technical solutions, preferably, one end of the wire feeding channel, which is close to the wire feeding wheel and the pinch roller, is a tapered port, and/or one end of the wire feeding tube, which is close to the wire feeding wheel and the pinch roller, is a tapered port. The arrangement of the conical port enables the wire feeding channel and the wire feeding tube to be further close to a moment control area of the wire feeding wheel and the wire feeding tube for conveying the wire, so that the wire can enter the wire feeding tube more accurately, the pushing of the wire is reduced, the wire is prevented from deviating from the wire feeding tube, the wire conveying path can be restrained, the wire feeding accuracy is improved, and the forming precision and the forming quality of the 3D printer are improved.
On the basis of any one of the above technical solutions, preferably, the width range value of the feeding printing consumable path formed between the wire feeding wheel and the pressing wheel is changed to be 0-1.5mm by the adjusting device.
In a second aspect, the present invention provides a feeding method of a 3D printer, including the steps of:
s1, a wire feeding swing frame is rotatably arranged on a motor through a fixed shaft, pinch rollers and adjusting devices are respectively arranged at two ends of the wire feeding swing frame, wire feeding wheels are arranged on a driving shaft of the motor and are distributed in parallel with the pinch rollers, and a wire feeding path is formed between the wire feeding wheels and the pinch rollers;
s2, a gear used for adjusting the height is arranged on the adjusting device, the height of one end of the wire feeding swing frame is changed by adjusting the gear, and then the distance between the pinch roller and the wire feeding wheel is changed, so that wires with different diameters and different hardness can be adapted.
On the basis of the above technical solution, preferably, the adjusting device includes an adjusting component and a positioning component, and the gear of the adjusting height is set by setting a positioning plane or a positioning curved surface on the positioning component and setting an adjusting plane or an adjusting curved surface which is matched with the positioning plane or the positioning curved surface and has a height difference from the positioning plane or the positioning curved surface on the adjusting component.
The following beneficial effects can be realized by the technical schemes: the feeding system and the feeding method of the 3D printer can be used for the spray heads of various 3D printers, are also suitable for the spray heads of remote wire feeding structures, change the distance between the pinch roller and the wire feeding wheel through the swing adjusting device, meet the requirement of printing various types of wires, and are compatible with different types of soft wires; and moreover, the setting of multiple gears can be used for a user to conveniently select correspondingly for different wires, so that the operation is simple and the practicability is high.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a front view of a first embodiment of the present invention;
FIG. 3 is a schematic view of the structure of the boss cylinder before the adjusting curved surface and the fixing hole are arranged;
fig. 4 is a schematic structural view of the boss cylinder after the adjustment curved surface and the fixing hole are provided;
FIG. 5 is a schematic diagram of the cooperation of the boss cylinder, the positioning cylinder and the top bead;
FIG. 6 is a schematic diagram of a second embodiment of the present invention;
fig. 7 is a schematic view of a structure in which the adjusting lever is matched with the positioning block.
In the figure, 1, a motor; 2. a wire feeding swing frame; 21. a fixed shaft; 22. a wire feeding channel; 23. positioning holes; 3. wire feeding wheel; 4. a pinch roller; 51. a boss cylinder; 511. regulating a curved surface; 512. a fixing hole; 513. top bead; 514. an end face; 52. an adjusting rod; 521. adjusting the plane; 522. a straight slot; 523. a positioning groove; 61. positioning a cylinder; 611. positioning a curved surface; 62. positioning a stop block; 621. positioning a plane; 622. a mounting hole; 7. a wire feeding tube; 8. a wire feeding pipe positioning sleeve; 9. a liquefier; 10. and (3) a nozzle.
Detailed Description
Embodiments of the present invention will be explained and illustrated in detail below with reference to the drawings.
The feeding system of the 3D printer shown in the figures 1-6 comprises a motor 1, a wire feeding swing frame 2, a wire feeding wheel 3, a pressing wheel 4 and an adjusting device; the wire feeding wheel 3 is arranged on a driving shaft of the motor 1; the wire feeding swing frame 2 is rotatably arranged on the motor 1 through a fixed shaft 21, and a wire feeding channel 22 in the vertical direction is arranged in the wire feeding swing frame 2; the wire feeding swing frame 2 is rotatably arranged on the motor 1 through a fixed shaft 21, and a wire feeding channel 22 is arranged on the wire feeding swing frame 2; the pinch roller 4 and the adjusting device are arranged at two ends of the wire feeding swing frame 1; the pinch roller 4 and the wire feeding wheel 3 are distributed in parallel in the horizontal direction, and a path for feeding printing consumables is formed between the pinch roller 4 and the wire feeding wheel, and corresponds to a wire feeding channel 22 on the wire feeding swing frame 2; the adjusting device comprises an adjusting assembly and a positioning assembly, wherein the positioning assembly is provided with a positioning plane or a positioning curved surface, and the adjusting assembly is provided with a plurality of adjusting planes which are matched with the positioning plane and have height differences from the center of the adjusting plane or a plurality of adjusting curved surfaces which are matched with the positioning curved surface and have height differences from the end surface of the adjusting plane.
Example 1
As shown in fig. 1-2, the fixed shaft 21 is fixed at the upper right corner of the wire feeding swing frame 2, the pinch roller 4 is installed at the lower end of the wire feeding swing frame 2, the adjusting device is installed at the left end of the wire feeding swing frame 2, and the pinch roller, the adjusting device and the fixed shaft are distributed in a triangle shape.
The adjusting component is a boss cylinder 51 and is vertically arranged on the wire feeding swing frame 2, the big end of the adjusting component is positioned outside the wire feeding swing frame 2, the small end of the adjusting component is arranged inside the wire feeding swing frame in a penetrating way, and the design of the big end can prevent the adjusting component from being separated from the upper part of the wire feeding swing frame; as shown in fig. 3-5, the big end of the boss cylinder 51 is provided with at least 2 adjusting curved surfaces 511 which are distributed in a staggered way and have a height difference from an end surface 514 thereof, the side surface is provided with at least 2 fixing holes 512 corresponding to the adjusting curved surfaces 511, the wire feeding swing frame 2 is provided with a top bead 513, one half of the top bead 513 is elastically arranged in the wire feeding swing frame 2 through a spring, and the other half is matched with the fixing holes 512 to fix the boss cylinder 51; the positioning component is a positioning cylinder 61, a fixing hole is formed in the center of the positioning cylinder 61, a fixing piece penetrates through the fixing hole to fix the positioning cylinder on the motor, the side face of the positioning cylinder 61 is a positioning plane 611, and the central axis of the positioning cylinder 61 is perpendicular to the central axis of the boss cylinder 51.
Preferably, a straight slot or a cross slot is formed in the outer end face of the small end of the boss cylinder 51 and faces to the upper part of the wire feeding swing frame, or the small end is fixedly connected with a straight slot or a cross slot screw, and the boss cylinder can be adjusted to adjust the gear of the curved surface by rotating the boss cylinder through a screwdriver.
At least 2 adjusting planes with height difference can be arranged on the boss cylinder 51 according to the requirement, in the embodiment, 4 adjusting planes are taken as an example for detailed description, the distances between the 4 adjusting planes and the end face of the big end of the boss cylinder 51 are different, so that 4 adjustable gears are formed, the tool bit of a screwdriver is inserted into a straight slot or a cross slot, the gears are rotationally adjusted, and as the positioning cylinder 61 is fixed, the wire feeding swing frame 2 automatically fits the positioning curved surface of each gear with the fixed curved surface under the action of self gravity; along with the adjustment of gear, the left end of send silk rocker 2 can swing from top to bottom, send the upper right corner of silk rocker 2 to rotate along with fixed axle 21, but do not take place the displacement, according to lever principle, send the lower extreme of silk rocker 2 can take place the swing in the left and right directions, and then make the wire feeding route between pinch roller 4 and the wire feeding wheel 3 take place wide and narrow change, in order to adapt to the wire of different diameters, different hardness, because the difference in height between the different adjustment planes on the boss cylinder 51 is less, so pinch roller 4 changes less in the position of upper and lower direction, can not make the direction of wire feeding route change greatly. Through setting up the regulation plane of different difference in height, can make every adjustment first shelves, can make the distance between wire feed wheel and the pinch roller change a gear, can make the distance between wire feed wheel and the pinch roller change 0.5mm after all gears are adjusted a week to according to different wires, select corresponding gear.
When the feeding system provided by the above technical scheme is used, the boss cylinder 51 can be adjusted from the upper part of the wire feeding swing frame 2, each adjusting step is provided, the corresponding adjusting curved surface 511 is matched with the side surface of the positioning cylinder 61 and is fixed through the top bead 513, the boss cylinder 51 is prevented from rotating automatically, in the gear shifting process, the top bead 513 is pushed back into the wire feeding swing frame 2 by the side surface of the boss cylinder 51, when the wire feeding swing frame 2 changes to the next step, the adjusting curved surface 511 of the next step is automatically attached to the positioning curved surface 611 under the action of the gravity of the wire feeding swing frame 2, at the moment, a part of the top bead 513 is exposed out under the action of a spring and is clamped with the fixing hole 512 on the boss cylinder 51, and the boss cylinder 51 is fixed. The two adjacent regulating curved surfaces can be smoothly transited, so that the regulation of gears is facilitated.
The wire feeding channel 22 in the wire feeding swing frame 2 is positioned at the upper side of a plane formed by the central shaft of the pressing wheel 4 and the central shaft of the wire feeding wheel 3, the lower side of the plane formed by the central shaft of the pressing wheel 4 and the central shaft of the wire feeding wheel 3 is provided with a wire feeding tube 7, the wire feeding tube 7 is preferably a tetrafluoro tube, and the wire feeding tube 7 is positioned in the axial direction of the wire feeding channel 22; one end of the wire feeding pipe 7, which is close to the wire feeding wheel 3, is fixed by a wire feeding pipe positioning sleeve 8, and the other end is sequentially connected with a liquefier 9 and a nozzle 10.
The wire enters between the wire feeding wheel 3 and the pinch roller 4 from the wire feeding channel 22, the wire feeding wheel 3 downwards conveys the wire into the wire feeding pipe 7 under the drive of the motor 1, the wire enters into the liquefier 9 from the wire feeding pipe 7, and is heated to a molten state, and is further printed and shaped by the nozzle 10.
Preferably, one end of the wire feeding pipe 7, which is close to the wire feeding wheel 3 and the pressing wheel 4, is a conical port, and is further close to a moment control area for conveying wires of the wire feeding wheel 3 and the pressing wheel 4, so that the wire feeding pipe is beneficial to conveying the wires, the conical port can also play a guiding role, the wires can accurately enter the wire feeding pipe, the pushing of the wires is reduced, the wires are prevented from deviating from the wire feeding pipe, the conveying path of the wires can be restrained, the wire feeding accuracy is improved, and the forming precision and the forming quality of the 3D printer are further improved.
Preferably, the end of the wire feeding channel 22, which is close to the wire feeding wheel 3 and the pinch roller 4, is also a conical port, is further close to a moment control area for conveying wires of the wire feeding wheel 3 and the pinch roller 4, and makes wire feeding paths before the wires enter the wire feeding wheel and the pinch roller be restrained, so that the wire feeding accuracy is further ensured.
Example 2
On the basis of the embodiment 1, the adjusting component and the positioning component are modified; the adjusting component is an adjusting rod 52 which is transversely and rotatably inserted in the wire feeding swing frame 2, as shown in fig. 6, a plurality of adjusting planes 521 which are parallel to the central axis and have height differences from the central axis are arranged on the adjusting component, a straight slot 522 or a cross slot is formed in the end face of the outer end of the adjusting rod 52, the outer end of the adjusting rod 52 is exposed at the left side of the wire feeding swing frame 2, a circle of positioning slot 523 is formed in the inner end side face of the adjusting rod 52, a positioning hole 23 corresponding to the positioning slot 523 is formed in the wire feeding swing frame 2, a clamping piece (omitted in the drawing) matched with the positioning slot 523 is arranged in the positioning hole 23, and the clamping piece is used for fixing the adjusting rod 52 on the wire feeding swing frame 2, so that the adjusting rod 52 is prevented from being separated from the constraint of the wire feeding swing frame 2 and moving in the horizontal direction.
The positioning component is a positioning stop block 62, the positioning stop block 62 is in a hexagonal structure, the uppermost side surface of the positioning stop block 62 is a positioning plane 621, the central axis of the adjusting rod 52 is perpendicular to the central axis of the positioning stop block 62, and as shown in fig. 7, the uppermost corner of the hexagonal structure is just matched with a groove formed after the adjusting plane 521 is formed on the adjusting rod 52; a mounting hole 622 is formed in the center of the positioning stop block 62, and a fixing piece penetrates through the mounting hole 622 to fix the positioning stop block 62 on the motor 1.
According to the embodiment, 4 adjusting planes are used as examples for explaining in detail, the distances between the 4 adjusting planes and the central shaft of the adjusting rod are different, so that 4 adjustable gears are formed, the tool bit of the screwdriver is inserted into a straight slot or a cross slot, the gears are rotationally adjusted, as the positioning stop block is fixed, the left end of the wire feeding swing frame swings up and down along with the adjustment of the gears, the upper right corner of the wire feeding swing frame rotates along with the adjustment of the gears, but does not move up and down, and according to the lever principle, the lower end of the wire feeding swing frame swings in the left-right direction, and further, the wire feeding path between the pressing wheel and the wire feeding wheel changes in width, so that wires with different diameters and different hardness are adapted.
Example 3
On the basis of the embodiment 1, the adjusting component and the positioning component are modified; the adjusting assembly is an adjusting screw which is rotatably arranged on the motor and is restrained on the motor through threads to prevent the adjusting screw from axial displacement, and at least 2 adjusting planes which are parallel to the central shaft and have a height difference from the central shaft are arranged on the adjusting screw; the positioning component is a positioning rod and is fixed on the wire feeding swing frame, and a positioning plane matched with the adjusting plane is arranged on the positioning component; the central axis of the adjusting screw is vertical to the central axis of the positioning rod.
Through the rotation of adjusting screw, change with locating plane assorted different adjusting plane, because locating plane does not take place the position change, adjusting screw's position changes along with adjusting plane's change to make the one end that send the silk rocker change from top to bottom, and then make the pinch roller change in the horizontal direction, the change of width takes place for the wire feeding route between pinch roller and the wire feeding wheel, in order to adapt to the silk of different diameters, different hardness.
Example 4
The embodiment provides a wire feeding method of a 3D printer, which comprises the following steps:
s1, a wire feeding swing frame is rotatably arranged on a motor through a fixed shaft, pinch rollers and adjusting devices are respectively arranged at two ends of the wire feeding swing frame, wire feeding wheels are arranged on a driving shaft of the motor and are distributed in parallel with the pinch rollers, and a wire feeding path is formed between the wire feeding wheels and the pinch rollers;
s2, a gear used for adjusting the height is arranged on the adjusting device, the height of one end of the wire feeding swing frame is changed by adjusting the gear, and then the distance between the pinch roller and the wire feeding wheel is changed, so that wires with different diameters and different hardness can be adapted.
On the basis of the above technical solution, preferably, the adjusting device includes an adjusting component and a positioning component, and the gear of the adjusting height is set by setting a positioning plane or a positioning curved surface on the positioning component and setting an adjusting plane or an adjusting curved surface which is matched with the positioning plane or the positioning curved surface and has a height difference from the positioning plane or the positioning curved surface on the adjusting component.
The foregoing embodiments have only expressed one or more embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it is possible for a person skilled in the art to make several variations and modifications without departing from the inventive concept, which are all within the scope of protection of the present invention.
Claims (5)
1. The feeding system of the 3D printer is characterized by comprising a motor (1), a wire feeding swing frame (2), a wire feeding wheel (3), a pressing wheel (4) and an adjusting device; the wire feeding wheel is arranged on a driving shaft of the motor; the wire feeding swing frame is rotatably arranged on the motor through a fixed shaft (21), and a wire feeding channel (22) is formed in the wire feeding swing frame; the pinch roller and the adjusting device are arranged at two ends of the wire feeding swing frame; the pinch roller and the wire feeding wheel are distributed in parallel, and a path for feeding printing consumables is formed between the pinch roller and the wire feeding wheel and corresponds to a wire feeding channel in the wire feeding swing frame; the adjusting device comprises an adjusting assembly and a positioning assembly, wherein the positioning assembly is provided with a positioning plane or a positioning curved surface, and the adjusting assembly is provided with at least 2 adjusting planes which are matched with the positioning plane and have a height difference from the central shaft of the adjusting assembly, or at least 2 adjusting curved surfaces which are matched with the positioning curved surface and have a height difference from the end face of the adjusting assembly; the adjusting device can be any one of the following structures: (1) The adjusting component is a boss cylinder (51) which is rotatably arranged on the wire feeding swing frame, the big end of the boss cylinder is provided with at least 2 adjusting curved surfaces (511) with height difference from the end surface (514), the boss cylinder is positioned by an auxiliary clamping piece, the side surface of the boss cylinder is provided with at least 2 fixing holes (512) corresponding to the adjusting curved surfaces, the auxiliary clamping piece is a top bead (513), at least half of the top bead is elastically arranged in the wire feeding swing frame, and the other part of the top bead is movably clamped in the fixing holes; the positioning component is a positioning cylinder (61) and is fixed on the motor, the side surface of the positioning component is a positioning curved surface (611), and the central axis of the positioning cylinder is vertical to the central axis of the boss cylinder; (2) The adjusting component is an adjusting rod (52) which is rotatably inserted in the wire feeding swing frame, at least 2 adjusting planes (521) which are parallel to the central axis and have height difference from the central axis are arranged on the adjusting component, a straight slot (522) or a cross slot is formed in the end face of the outer end of the adjusting rod, a circle of positioning slot (523) is formed in the side face of the inner end of the adjusting rod, and a clamping piece is arranged in the positioning slot to fix the adjusting rod on the wire feeding swing frame; the positioning component is a positioning stop block (62) and is fixed on the motor, and the side surface of the positioning component is provided with a positioning plane (621); the central shaft of the adjusting rod is vertical to the central shaft of the positioning stop block; (3) The adjusting component is an adjusting screw and is rotatably arranged on the motor, and at least 2 adjusting planes which are parallel to the central shaft and have a height difference from the central shaft are arranged on the adjusting component; the positioning component is a positioning rod and is fixed on the wire feeding swing frame, and a positioning plane matched with the adjusting plane is arranged on the positioning component; the central axis of the adjusting screw is vertical to the central axis of the positioning rod.
2. The feeding system of a 3D printer according to claim 1, wherein the wire feeding channel on the wire feeding swing frame is located at one side of a plane formed by the pressing wheel center shaft and the wire feeding wheel center shaft, a wire feeding tube (7) is arranged at the other side of the plane formed by the pressing wheel center shaft and the wire feeding wheel center shaft, the wire feeding tube is located in the axial direction of the wire feeding channel, one end of the wire feeding tube, which is close to the wire feeding wheel, is fixed by a wire feeding tube positioning sleeve (8), and the other end of the wire feeding tube is sequentially connected with a liquefier (9) and a nozzle (10).
3. The feed system of a 3D printer of claim 1, wherein the width of the feed consumable path formed between the feed roller and the pinch roller is varied by the adjustment means to a range of values from 0 to 1.5mm.
4. A wire feeding method using the feeding system of the 3D printer according to any one of claims 1 to 3, comprising the steps of:
s1, a wire feeding swing frame is rotatably arranged on a motor through a fixed shaft, pinch rollers and adjusting devices are respectively arranged at two ends of the wire feeding swing frame, wire feeding wheels are arranged on a driving shaft of the motor and are distributed in parallel with the pinch rollers, and a wire feeding path is formed between the wire feeding wheels and the pinch rollers;
s2, a gear used for adjusting the height is arranged on the adjusting device, the height of one end of the wire feeding swing frame is changed by adjusting the gear, and then the distance between the pinch roller and the wire feeding wheel is changed, so that wires with different diameters and different hardness can be adapted.
5. The wire feeding method as claimed in claim 4, wherein the adjusting means includes an adjusting member and a positioning member, and the gear for adjusting the height is set by providing a positioning plane or a positioning curved surface on the positioning member and providing an adjusting plane or an adjusting curved surface on the adjusting member which is matched with the positioning plane or the positioning curved surface and has a height difference therefrom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710537455.0A CN107415226B (en) | 2017-07-04 | 2017-07-04 | Feeding system and feeding method of 3D printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537455.0A CN107415226B (en) | 2017-07-04 | 2017-07-04 | Feeding system and feeding method of 3D printer |
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| Publication Number | Publication Date |
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| CN107415226A CN107415226A (en) | 2017-12-01 |
| CN107415226B true CN107415226B (en) | 2023-08-25 |
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| US11584078B2 (en) | 2017-10-03 | 2023-02-21 | Jabil Inc. | Apparatus, system and method of operating an additive manufacturing nozzle |
| US11485088B2 (en) | 2017-10-03 | 2022-11-01 | Jabil Inc. | Apparatus, system and method of process monitoring and control in an additive manufacturing environment |
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