Printer and automatic material conveying system thereof

Abstract

The invention discloses a printer and an automatic material conveying system thereof, and relates to the technical field of printers, the printer comprises a printing device, the side surface of the printing device is fixedly connected with a mounting mechanism, the mounting mechanism comprises a mounting plate and a rotating column, the mounting plate is fixed on the side surface of the printing device, and the rotating column is fixed on the mounting plate; the rotating column is rotationally connected to the surface of the mounting plate; a material rolling mechanism used for storing and releasing printing raw materials is mounted on the mounting mechanism, the material rolling mechanism comprises a material rolling wheel and a brake gear, the rotating column is sleeved with the material rolling wheel, and the brake gear is fixed to the side face of the material rolling wheel; a brake mechanism for locking the material rolling mechanism is mounted in the mounting plate and comprises a brake rack, and the brake rack is in meshed connection with a brake gear; the automatic feeding machine has the advantages that the winding wheel is locked immediately while the automatic feeding machine stops feeding, the winding wheel is prevented from rotating due to inertia, and therefore 3D printing wires are prevented from loosening and falling off.

Description

Technical Field

[0001] The present invention relates to the technical field of printers, and more particularly to a printer and an automatic feeding system thereof. Background Art

[0002] 3D printers are an advanced manufacturing technology that can transform digital models into physical objects by stacking materials layer by layer to create three-dimensional objects. 3D printing technology is widely used in various fields, including manufacturing, healthcare, aerospace, automotive, architecture, education and art. It can be used for a variety of applications such as prototyping, custom production, tooling and parts manufacturing.

[0003] Different 3D printers use different types of materials. The most common is fused deposition modeling, which uses different types of thermoplastics, such as polyethylene, polypropylene, ABS (acrylonitrile butadiene styrene copolymer), PETG (polyethylene terephthalate), TPU (thermoplastic polyurethane), etc., which are usually made into plastic wire rolls, called 3D printing filaments or printing material rolls.

[0004] During the printing process, the 3D printing filament is fed into the print head by an automatic feeder and heated to form the printing material. The automatic feeder will continuously pull the 3D printing filament during operation, thereby driving the winding wheel that winds the 3D printing filament to rotate. When the printing is intermittent or paused, the automatic feeder will also stop immediately, but due to inertia, the winding wheel will still rotate, thereby releasing the 3D printing filament, causing the 3D printing filament to loosen and fall off. Therefore, it is necessary to propose a printer and its automatic feeding system to solve the above problems. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a printer and an automatic feeding system thereof, which can solve the problem that when the 3D printer is intermittent or paused during printing, the automatic feeder stops feeding, but the winding wheel still rotates due to inertia, which easily causes the 3D printing filament to loosen and fall off. It has the advantage that the winding wheel is locked immediately when the automatic feeder stops feeding, so as to avoid the winding wheel rotating due to inertia, thereby preventing the 3D printing filament from loosening and falling off.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A printer and an automatic feeding system thereof, comprising:

[0008] A printing device, wherein a mounting mechanism is fixedly connected to the side of the printing device, the mounting mechanism comprising a mounting plate and a rotating column, the mounting plate is fixed to the side of the printing device, and the rotating column is rotatably connected to the surface of the mounting plate;

[0009] The mounting mechanism is provided with a material rolling mechanism for storing and releasing printing materials, the material rolling mechanism comprising a material rolling wheel and a brake gear, the material rolling wheel is sleeved on the rotating column, and the brake gear is fixed to the side of the material rolling wheel;

[0010] A braking mechanism for locking the coiling mechanism is installed inside the mounting plate. The braking mechanism comprises a braking rack which is meshed and connected with a braking gear.

[0011] As a preferred solution of the present invention, the mounting mechanism also includes a mounting hole, a cross groove and a fixing sleeve. The mounting hole is provided on the surface of the mounting plate, one end of the rotating column is rotatably connected to the inside of the mounting hole, the cross groove is provided on the surface of the rotating column, and the other end of the rotating column is threadedly connected to the fixing sleeve for clamping the winding wheel, and the fixing sleeve contacts the side of the winding wheel.

[0012] As a preferred solution of the present invention, the winding mechanism also includes an inner through cavity, a cross bar and a material wire. The inner through cavity is provided through the center of the winding wheel and the brake gear, and the rotating column is slidably connected to the interior of the inner through cavity. The cross bar is provided inside the inner through cavity, and the cross bar is slidably connected to the cross groove correspondingly, and the material wire is wound around the interior of the winding wheel.

[0013] As a preferred solution of the present invention, a wire management mechanism for preventing the wire from being entangled is also fixedly installed on the surface of the mounting plate, and the wire management mechanism includes a guide rail frame, a slider, a wire management block, a wire sleeve ring, a wire feed groove, a first rotating shaft, a first torsion spring and a wire locking plate. The guide rail frame is fixedly installed on the surface of the mounting plate, the slider is slidably connected to the guide rail frame, the wire management block is fixed to the side of the slider, a wire sleeve ring is penetrated through the wire management block, and the wire is slidably connected to the inside of the wire sleeve ring, and two wire feed grooves are symmetrically provided inside the wire management block, and the inside of each wire feed groove is rotatably connected to the first rotating shaft, and the two wire locking plates are respectively rotatably connected to the first rotating shafts in the two wire feed grooves, and the wire contacts the wire locking plate, and the first torsion spring is installed on the first rotating shaft, and the first torsion spring is installed inside the wire locking plate.

[0014] As a preferred scheme of the present invention, a trigger mechanism is also installed on the surface of the mounting plate, and the trigger mechanism includes a threading block, an inner cavity, a wire sleeve, a second rotating shaft, a second torsion spring, a trigger rod, a dial plate and an adjusting rod. The threading block is fixedly installed on the surface of the mounting plate, and the material wire passes through the threading plate and is slidably connected thereto. The inner cavity is provided inside the threading block, and the material wire passes through the inner cavity. The wire sleeve is movably connected to the inside of the inner cavity, and the material wire passes through the wire sleeve and is slidably connected thereto. The second rotating shaft is rotatably connected to the inside of the threading block, the second torsion spring is installed on the second rotating shaft, the trigger rod is rotatably connected to the inside of the threading plate through the second rotating shaft, and the bottom end of the trigger rod swings inside the mounting plate, a dial plate is fixed on the top of the trigger rod, and the dial plate is cooperatively connected to the wire sleeve, and the adjusting rod is installed at the bottom end of the trigger rod.

[0015] As a preferred solution of the present invention, the friction force generated between the wire and the wire drum during the sliding process is greater than the deadweight of the wire drum.

[0016] As a preferred solution of the present invention, a wire control mechanism is installed on the top of the printing device to prevent the material wire from swinging randomly during the pulling process. The wire control mechanism includes a wire control base and a wire fixing drum. The wire control base is installed on the top of the printing device, and the wire fixing drum is fixed on the wire control base. The material wire is slidably connected to the inside of the wire control base and the wire fixing drum.

[0017] As a preferred solution of the present invention, the braking mechanism also includes a pressure column, an adjusting groove, a third rotating shaft, a third torsion spring and a brake plate, the pressure column is slidably connected to the inside of the mounting plate, and the bottom of the pressure column is a wedge-shaped inclined surface, the adjusting groove is fixed to the top of the pressure column, and the adjusting groove is slidably connected to the trigger rod through the adjusting rod, the third rotating shaft is rotatably connected to the inside of the mounting plate, and the top of the brake rack is rotatably connected to the inside of the mounting plate through the third rotating shaft, the third torsion spring is installed on the third rotating shaft, and the third torsion spring is installed inside the brake rack, the brake plate is fixed to the top of the brake rack, and the bottom inclined surface of the pressure column contacts the brake plate.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The wire trigger mechanism is used to utilize the friction force between the wire reel and the wire reel when the automatic feeding system drags the wire, so that the wire reel moves up, thereby driving the brake mechanism to move, so that the brake rack is separated from the brake gear, and the winding wheel can rotate freely, and the wire is released smoothly; when the automatic feeding system stops dragging the wire, the wire reel immediately falls, the trigger rod is reset, the brake mechanism is reset, and the brake rack is immediately engaged with the brake gear, thereby stopping the rotation of the winding wheel, and then stopping the release of the wire wound on the winding wheel. This solves the problem that the feeding device of the existing 3D printer still releases a part of the wire under the action of inertia, and avoids the wire from loosening, confusion and falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the installation mechanism of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall cross-section structure of the installation mechanism of the present invention;

[0023] Figure 4 It is a schematic diagram of the disassembly structure of the coiling mechanism of the present invention;

[0024] Figure 5 It is a schematic diagram of the coordination structure between the coiling mechanism and the braking mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of the cross-section structure of the brake rack of the present invention;

[0026] Figure 7 It is a schematic diagram of the brake mechanism structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the partial cross-section structure of the brake mechanism of the present invention;

[0028] Fig. 9 It is a schematic diagram of a partial cross-section structure of the wire management mechanism of the present invention;

[0029] Fig.10 It is a schematic diagram of the partial cross-section structure of the wire management mechanism of the present invention.

[0030] Description of the numbers in the figure:

[0031] 1. Printing device, 2. Mounting mechanism, 21. Mounting plate, 22. Mounting hole, 23. Rotating column, 24. Cross slot, 25. Fixed sleeve, 3. Coiling mechanism, 31. Coiling wheel, 32. Braking gear, 33. Internal cavity, 34. Cross bar, 35. Material wire, 4. Wire management mechanism, 41. Guide rail, 42. Slider, 43. Wire management block, 44. Wire ring, 45. Wire feed slot, 46. First rotating shaft, 47. First torque Spring, 48, locking plate, 5, trigger mechanism, 51, threading block, 52, inner cavity, 53, threading reel, 54, second rotating shaft, 55, second torsion spring, 56, trigger rod, 57, dial plate, 58, adjusting rod, 6, line control mechanism, 61, line control base, 62, line fixing drum, 7, brake mechanism, 71, pressure column, 72, adjusting groove, 73, third rotating shaft, 74, third torsion spring, 75, brake rack, 76, brake plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1-10 As shown, a printer and an automatic feeding system thereof, comprising:

[0034] A printing device 1, a side of which is fixedly connected to a mounting mechanism 2, the mounting mechanism 2 comprising a mounting plate 21 and a rotating column 23, the mounting plate 21 being fixed to the side of the printing device 1, and the rotating column 23 being rotatably connected to the surface of the mounting plate 21;

[0035] The mounting mechanism 2 is provided with a material rolling mechanism 3 for storing and releasing printing materials, the material rolling mechanism 3 comprising a material rolling wheel 31 and a brake gear 32, the material rolling wheel 31 is sleeved on the rotating column 23, and the brake gear 32 is fixed to the side of the material rolling wheel 31;

[0036] A brake mechanism 7 for locking the coiling mechanism 3 is installed inside the mounting plate 21 . The brake mechanism 7 includes a brake rack 75 . The brake rack 75 is meshed and connected with the brake gear 32 .

[0037] In a further embodiment, a winding mechanism 3 for winding up the filament 35 is installed on the printing device 1, and the winding mechanism 3 is rotatably connected to the side of the printing device 1 through the mounting mechanism 2. When the feeding system in the printing device 1 drags the filament 35, the winding wheel 31 will rotate on the side of the printing device 1 through the rotating column 23, thereby releasing the filament 35; when the feeding system stops feeding, it will immediately stop pulling the filament 35, but due to inertia, the winding wheel 31 will continue to rotate, causing the filament 35 wound on the winding wheel 31 to be released, thereby causing the filament 35 to loosen, become chaotic, or even entangled and fall off. Therefore, when the filament 35 stops pulling, the trigger mechanism 5 is immediately started, driving the brake mechanism 7 to move, and the brake rack 75 is meshed with the brake gear 32 on the side of the winding wheel 31, thereby timely stopping the winding wheel 31 from rotating, thereby preventing the filament 35 from loosening, becoming chaotic, and falling off.

[0038] Specifically, the mounting mechanism 2 also includes a mounting hole 22, a cross groove 24 and a fixing sleeve 25. The mounting hole 22 is provided on the surface of the mounting plate 21, one end of the rotating column 23 is rotatably connected to the inside of the mounting hole 22, the surface of the rotating column 23 is provided with the cross groove 24, and the other end of the rotating column 23 is threadedly connected to the fixing sleeve 25 for clamping the winding wheel 31, and the fixing sleeve 25 contacts the side of the winding wheel 31.

[0039] The cam 32 is engaged with the first and second gears 36 and 37 and is engaged with the first and second gears 38 in the first and second gears 39. When the cam 32 is engaged with the first and second gears 39, the first and second gears 39 are engaged with the first and second gears 38.

[0040] Specifically, the winding mechanism 3 also includes an inner cavity 33, a cross bar 34 and a material wire 35. The inner cavity 33 is provided through the center of the winding wheel 31 and the brake gear 32, and the rotating column 23 is slidably connected to the inside of the inner cavity 33. The cross bar 34 is provided inside the inner cavity 33, and the cross bar 34 is correspondingly slidably connected to the cross groove 24, and the material wire 35 is wound around the inside of the winding wheel 31.

[0041] In a further embodiment, the rotating column 23 is inserted into the inner cavity 33, and the cross bar 34 on the inner wall of the inner cavity 33 is slidably connected with the cross groove 24 on the surface of the rotating column 23, so that the winding wheel 31 and the brake gear 32 are locked with the rotating column 23 to prevent relative rotation.

[0042] Specifically, the surface of the mounting plate 21 is also fixedly mounted with a wire management mechanism 4 for preventing the wire 35 from being entangled. The wire management mechanism 4 includes a guide rail frame 41, a slider 42, a wire management block 43, a wire sleeve ring 44, a wire feed groove 45, a first rotating shaft 46, a first torsion spring 47 and a wire locking plate 48. The guide rail frame 41 is fixedly mounted on the surface of the mounting plate 21, the slider 42 is slidably connected to the guide rail frame 41, the wire management block 43 is fixed to the side of the slider 42, and the wire sleeve ring 44 is penetrated in the wire management block 43. 4, and the material wire 35 is slidably connected to the inside of the wire ring 44, and the inside of the wire management block 43 is also symmetrically provided with two said wire feeding grooves 45, and the inside of each of the said wire feeding grooves 45 is rotatably connected with the first rotating shaft 46, and the two said wire locking plates 48 are rotatably connected to the first rotating shafts 46 in the two said wire feeding grooves 45, and the material wire 35 abuts against the said wire locking plates 48, and the first torsion spring 47 is installed on the first rotating shaft 46, and the first torsion spring 47 is installed inside the said wire locking plates 48.

[0043] In a further embodiment, the wire management mechanism 4 can change its position in real time according to the changes in the pulling of the wire 35, preventing the wire 35 from bending and becoming disordered, thereby making the wire 35 move more smoothly; at the same time, the wire management mechanism 4 regulates the sliding range of the wire 35, avoiding excessive movement of the wire 35, thereby reducing noise, and preventing the wire 35 from breaking. First, the wire 35 needs to be passed through the inside of the wire management mechanism 4. The wire loop 44 is an open channel. The wire 35 needs to be dragged from the front of the wire management block 43, and pressure is applied to the wire 35 into the wire loop 44. During this process, the wire 35 passes through the gap of the wire loop 44 and moves into the wire loop 44, first squeezing the two wire locking plates 48 at the gap. The two wire locking plates 48 rotate around the first rotating shaft 46 in their respective wire feed slots 45, and compress the first torsion spring 47. The two wire locking plates 48 rotate, so that the gap is no longer closed, and the wire 35 is 35 smoothly enters the wire loop 44; when the wire 35 enters the wire loop 44, under the action of the first torsion spring 47, the two locking plates 48 reverse around their respective first rotating shafts 46 in their respective wire inlet grooves 45, return to the initial position, and re-close the gap of the wire loop 44. When the locking plates 48 are squeezed from the inside of the wire loop 44 to the gap, the locking plates 48 are restricted by the wire inlet groove 45 and cannot rotate in this direction. Therefore, the wire 35 cannot escape by itself after entering the wire loop 44, thereby ensuring that the wire 35 is always restricted by the wire loop 44. As the wire 35 is pulled, the slider 42 will be driven by the wire management block 43 to slide back and forth along the guide rail on the guide rail frame 41. The sliding range is the movement range of the wire 35, which prevents the wire 35 from moving too far.

[0044] Specifically, a trigger mechanism 5 is also installed on the surface of the mounting plate 21, and the trigger mechanism 5 includes a threading block 51, an inner cavity 52, a threading disc 53, a second rotating shaft 54, a second torsion spring 55, a trigger rod 56, a dial plate 57 and an adjusting rod 58. The threading block 51 is fixedly installed on the surface of the mounting plate 21, and the material wire 35 passes through the threading plate and is slidably connected thereto. The inner cavity 52 is provided inside the threading block 51, and the material wire 35 passes through the inner cavity 52. ​​The threading disc 53 is movably connected to the inside of the inner cavity 52. The wire 35 passes through the threading drum 53 and is slidably connected thereto, the second rotating shaft 54 ​​is rotatably connected to the inside of the threading block 51, the second torsion spring 55 is installed on the second rotating shaft 54, the trigger rod 56 is rotatably connected to the inside of the threading plate through the second rotating shaft 54, and the bottom end of the trigger rod 56 swings inside the mounting plate 21, a dial plate 57 is fixed to the top end of the trigger rod 56, and the dial plate 57 is cooperatively connected to the threading drum 53, and the adjusting rod 58 is installed at the bottom end of the trigger rod 56.

[0045] In a further embodiment, the wire 35 passes through the threading block 51 and slides relative to it. At the same time, the wire 35 passes through the inner cavity 52 slidably connected to the threading block 51, and the wire 35 passes through a wire sleeve 53 in the inner cavity 52. ​​When the automatic feeding mechanism drags the wire 35, the wire 35 inside the threading block 51 slides upward (according to the attached Figure 3 The friction between the wire 35 and the wire drum 53 is very large, and the force of the wire 35 sliding upward will drive the wire drum 53 to move upward. At the same time, the wire drum 53 is restricted by the inner cavity 52, so that the wire drum 53 always stops at the top of the inner cavity 52 during the sliding of the wire 35. The movement of the wire drum 53 pushes the dial plate 57 upward, and the suspended state of the wire drum 53 keeps the dial plate 57 in a dialed state. The movement of the dial plate 57 drives the trigger rod 56 to swing downward, and the top of the trigger rod 56 rotates around the second rotating shaft 54 ​​and compresses the second torsion spring 55; similarly, the adjustment rod 58 at the bottom end of the trigger rod 56 slides horizontally in the adjustment slot 72 as the trigger rod 56 swings. When the wire 35 stops sliding, the wire drum 53 automatically falls down, and the second torsion spring 55 is reset, driving the trigger rod 56 to rotate around the second rotating shaft 54, and the top of the trigger rod 56 drives the paddle plate 57 back to the initial position, so that the paddle plate 57 always contacts the top surface of the wire drum 53, and at the same time, the trigger rod 56 drives the adjusting rod 58 at its bottom end to slide in the adjusting groove 72.

[0046] Specifically, the friction force generated between the wire 35 and the wire drum 53 during the sliding process is greater than the dead weight of the wire drum 53.

[0047] In a further embodiment, when the wire 35 slides upward, the friction force generated by the wire drum 53 can drive the wire drum 53 to move upward and always stay at the top of the inner cavity 52, so that the movement and stay of the wire drum 53 can respectively drive the trigger rod 56 to swing and maintain the posture after swinging through the paddle 57.

[0048] Specifically, a wire control mechanism 6 is installed on the top of the printing device 1 to prevent the material wire 35 from swinging randomly during the pulling process. The wire control mechanism 6 includes a wire control base 61 and a wire fixing drum 62. The wire control base 61 is installed on the top of the printing device 1, and the wire fixing drum 62 is fixed on the wire control base 61. The material wire 35 is slidably connected to the inside of the wire control base 61 and the wire fixing drum 62.

[0049] In a further embodiment, the wire control mechanism 6 is composed of a wire control base 61 and a wire fixing drum 62, both of which can pass the wire 35. The sliding of the wire 35 can be limited by the rigid wire fixing drum 62 to prevent the wire 35 from swinging randomly when being dragged by the automatic feeding system. This can not only prevent the wire 35 from bending, breaking and other problems caused by excessive movement of the wire 35, but also reduce the twitching noise of the wire 35 to avoid noise pollution.

[0050] Specifically, the braking mechanism 7 also includes a pressure column 71, an adjusting groove 72, a third rotating shaft 73, a third torsion spring 74 and a braking plate 76. The pressure column 71 is slidably connected to the inside of the mounting plate 21, and the bottom of the pressure column 71 is a wedge-shaped inclined surface. The adjusting groove 72 is fixed to the top of the pressure column 71, and the adjusting groove 72 is slidably connected to the trigger rod 56 through the adjusting rod 58. The third rotating shaft 73 is rotationally connected to the inside of the mounting plate 21, and the top of the braking rack 75 is rotationally connected to the inside of the mounting plate 21 through the third rotating shaft 73. The third torsion spring 74 is installed on the third rotating shaft 73, and the third torsion spring 74 is installed in the inside of the braking rack 75. The braking plate 76 is fixed to the top of the braking rack 75, and the bottom inclined surface of the pressure column 71 contacts the braking plate 76.

[0051] In a further embodiment, when the trigger rod 56 drives the adjusting rod 58 to swing downward, it drives the pressure column 71 to slide downward in the mounting plate 21. During the downward sliding process of the pressure column 71, the inclined surface at the bottom thereof is used to squeeze the brake plate 76 at the top of the brake rack 75, thereby pushing the brake plate 76 to swing. The brake plate 76 drives the brake rack 75 to swing around the third rotating shaft and compresses the third torsion spring 74. The swinging of the brake rack 75 will separate from the brake gear 32, thereby releasing the brake gear 32, thereby allowing the winding wheel 31 to rotate freely. When the trigger rod 56 returns to its initial position, the pressure column 71 is lifted by the trigger rod 56, and the pressure The bottom of the column 71 no longer applies pressure to the brake plate 76. Under the reset action of the third torsion spring 74, the brake rack 75 swings and immediately engages with the brake gear 32, thereby stopping the rotation of the winding wheel 31, and then stopping the release of the material wire 35 wound on the winding wheel 31. In this way, when the automatic feeding system stops pulling the material wire 35, through the transmission cooperation between the various parts of the mechanism, the brake rack 75 immediately engages with the brake gear 32 to prevent the winding wheel 31 from rotating, thereby solving the problem that the feeding device of the existing 3D printer will still release a part of the material wire 35 under the action of inertia, and avoiding the material wire 35 from loosening, confusion and falling off.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A printer and an automatic feeding system thereof, characterized in that: include: A printing device (1), wherein a mounting mechanism (2) is fixedly connected to a side surface of the printing device (1), wherein the mounting mechanism (2) comprises a mounting plate (21) and a rotating column (23), wherein the mounting plate (21) is fixed to the side surface of the printing device (1), and the rotating column (23) is rotatably connected to a surface of the mounting plate (21); The mounting mechanism (2) is provided with a material rolling mechanism (3) for storing and releasing printing materials, the material rolling mechanism (3) comprising a material rolling wheel (31) and a brake gear (32), the material rolling wheel (31) being sleeved on the rotating column (23), and the brake gear (32) being fixed to the side of the material rolling wheel (31); A braking mechanism (7) for locking the material coiling mechanism (3) is installed inside the mounting plate (21), wherein the braking mechanism (7) comprises a braking rack (75), and the braking rack (75) is meshingly connected with the braking gear (32).

2. The printer and automatic feeding system thereof according to claim 1, characterized in that: The mounting mechanism (2) further comprises a mounting hole (22), a cross groove (24) and a fixing sleeve (25); the mounting hole (22) is provided on the surface of the mounting plate (21); one end of the rotating column (23) is rotatably connected to the inside of the mounting hole (22); the cross groove (24) is provided on the surface of the rotating column (23); the other end of the rotating column (23) is threadedly connected to the fixing sleeve (25) for clamping the winding wheel (31), and the fixing sleeve (25) contacts the side surface of the winding wheel (31).

3. The printer and automatic feeding system thereof according to claim 2, characterized in that: The winding mechanism (3) further comprises an inner through cavity (33), a cross bar (34) and a material wire (35); the inner through cavity (33) is provided through the center of the winding wheel (31) and the brake gear (32); the rotating column (23) is slidably connected to the inside of the inner through cavity (33); the cross bar (34) is provided inside the inner through cavity (33); the cross bar (34) is slidably connected to the cross groove (24) correspondingly; the material wire (35) is wound around the inside of the winding wheel (31).

4. The printer and automatic feeding system thereof according to claim 3, characterized in that: The surface of the mounting plate (21) is also fixedly mounted with a wire management mechanism (4) for preventing the wire (35) from being entangled. The wire management mechanism (4) comprises a guide rail frame (41), a slider (42), a wire management block (43), a wire sleeve ring (44), a wire feed groove (45), a first rotating shaft (46), a first torsion spring (47) and a wire locking plate (48). The guide rail frame (41) is fixedly mounted on the surface of the mounting plate (21), the slider (42) is slidably connected to the guide rail frame (41), the wire management block (43) is fixed to the side of the slider (42), and the wire sleeve ring is penetrated through the wire management block (43). (44), and the material wire (35) is slidably connected to the inside of the wire ring (44), and the inside of the wire management block (43) is also symmetrically provided with two said wire feed grooves (45), and the inside of each of the said wire feed grooves (45) is rotatably connected with the first rotating shaft (46), and the two said wire locking plates (48) are respectively rotatably connected to the first rotating shafts (46) in the two said wire feed grooves (45), and the material wire (35) contacts the said wire locking plates (48), and the first torsion spring (47) is installed on the first rotating shaft (46), and the first torsion spring (47) is installed inside the said wire locking plates (48).

5. The printer and automatic feeding system thereof according to claim 3, characterized in that: The surface of the mounting plate (21) is also provided with a trigger mechanism (5), the trigger mechanism (5) comprising a threading block (51), an inner cavity (52), a threading disc (53), a second rotating shaft (54), a second torsion spring (55), a trigger rod (56), a dial plate (57) and an adjusting rod (58); the threading block (51) is fixedly mounted on the surface of the mounting plate (21), and the material wire (35) passes through the threading plate and is slidably connected thereto; the inner cavity (52) is provided inside the threading block (51), and the material wire (35) passes through the inner cavity (52); the threading disc (53) is movably connected to the inner cavity (52) of the inner cavity (52); The wire (35) passes through the threading disc (53) and is slidably connected thereto. The second rotating shaft (54) is rotatably connected to the inside of the threading block (51). The second torsion spring (55) is installed on the second rotating shaft (54). The trigger rod (56) is rotatably connected to the inside of the threading plate through the second rotating shaft (54). The bottom end of the trigger rod (56) swings inside the mounting plate (21). A dial plate (57) is fixed to the top end of the trigger rod (56), and the dial plate (57) is cooperatively connected to the threading disc (53). The adjusting rod (58) is installed at the bottom end of the trigger rod (56).

6. The printer and automatic feeding system thereof according to claim 5, characterized in that: The friction force generated between the material wire (35) and the thread drum (53) during the sliding process is greater than the deadweight of the thread drum (53).

7. The printer and automatic feeding system thereof according to claim 3, characterized in that: The top of the printing device (1) is provided with a wire control mechanism (6) for preventing the material wire (35) from swinging randomly during the pulling process. The wire control mechanism (6) comprises a wire control base (61) and a wire fixing drum (62). The wire control base (61) is installed on the top of the printing device (1), the wire fixing drum (62) is fixed on the wire control base (61), and the material wire (35) is slidably connected to the inside of the wire control base (61) and the wire fixing drum (62).

8. The printer and automatic feeding system thereof according to claim 5, characterized in that: The braking mechanism (7) further comprises a pressure column (71), an adjusting groove (72), a third rotating shaft (73), a third torsion spring (74) and a braking plate (76); the pressure column (71) is slidably connected to the inside of the mounting plate (21); the bottom of the pressure column (71) is a wedge-shaped inclined surface; the adjusting groove (72) is fixed to the top of the pressure column (71); the adjusting groove (72) is slidably connected to the trigger rod (56) via the adjusting rod (58); the third rotating shaft (73) is a third torsion spring (74) and a braking plate (76); 3) is rotatably connected to the inside of the mounting plate (21), and the top of the brake rack (75) is rotatably connected to the inside of the mounting plate (21) through the third rotating shaft (73), the third torsion spring (74) is installed on the third rotating shaft (73), and the third torsion spring (74) is installed inside the brake rack (75), the brake plate (76) is fixed to the top of the brake rack (75), and the bottom inclined surface of the pressure column (71) abuts against the brake plate (76).

Images