Feeding device of 3D printer

Abstract

The utility model relates to the technical field of 3D printing, and discloses a feeding device of a 3D printer, which comprises a shell, the inner wall of the shell is connected with a closing door in a sliding manner, the outer wall of the shell is fixedly provided with a control terminal, the inner wall of the shell is rotatably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly sleeved with a fixed sleeve shell, and the fixed sleeve shell is fixedly connected with a rotating shaft. And a fixed disc is fixedly mounted on the inner wall of the shell. A wire coil is arranged outside a fixing sleeve shell in a sleeving mode and moves towards a fixing disc, when the wire coil is in lap joint with a fixing pin, the wire coil presses the fixing pin towards the interior of the fixing sleeve shell, then the fixing pin moves towards a lock pin, when the fixing pin is in lap joint with the lock pin, the lock pin is pressed by the fixing pin, and when the wire coil is in lap joint with the fixing disc, the lock pin moves towards the interior of the fixing sleeve shell. And a pulling piece is pulled, the pulling piece drives a lock pin to move, so that the lock pin is separated from a fixed pin, and the problem that an existing device needs to disassemble a structure above a rotating shaft and is inconvenient to use is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a feeding device of a 3D printer. Background Art

[0002] 3D printing is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses 3D model files as the basis and uses adhesive materials such as powdered metal or plastic to construct objects by printing layer by layer.

[0003] The existing 3D printer feeding device needs to disassemble the structure above the rotating shaft when replacing the raw material coil, which is inconvenient to use. At the same time, since it cannot detect the speed of line discharge, the material usage speed changes when the printer fails, and the user cannot make a quick judgment, resulting in material waste. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a feeding device for a 3D printer, which has the advantages of being easy to replace wire coils and having a detection device, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a feeding device of a 3D printer, comprising a shell, the inner wall of the shell is slidably connected with a closing door, the outer wall of the shell is fixedly installed with a control terminal, the inner wall of the shell is rotatably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly sleeved with a fixed sleeve shell, the inner wall of the shell is fixedly installed with a fixed disk, the outer wall of the fixed sleeve shell is slidably sleeved with a wire roll, the outer wall of the wire roll is fixedly sleeved with a gear, an end of the wire roll away from the gear is movably connected with a pulling piece, the inner wall of the fixed sleeve shell is respectively slidably connected with a fixing pin and a locking pin, the inner wall of the fixed sleeve shell is respectively provided with a spring 1 and a spring 2, the inner wall of the shell is fixedly installed with a speed detector, the input shaft of the speed detector is fixedly installed with a friction wheel, the inner wall of the shell is fixedly installed with a driving motor, the power output shaft of the driving motor is fixedly installed with a screw, and the outer wall of the screw is threadedly connected with a fixed tooth block.

[0006] As a preferred technical solution of the utility model, the fixing pin penetrates the outer wall of the fixing sleeve, and the top of the fixing pin is provided with an inclined surface, and the lowest point of the inclined surface at the top of the fixing pin is opened toward the direction of the second spring.

[0007] As a preferred technical solution of the utility model, a slope is provided on the side of the lock pin close to spring 1, and the slope is opened toward the bottom of the fixing pin, and the bottom end of the slope at the top of the lock pin is close to the fixing pin.

[0008] As a preferred technical solution of the utility model, the fixed pin, spring 1, lock pin and spring 2 are regarded as a flip assembly, and there are three flip assemblies. The three flip assemblies are arranged in a circular array on the inner wall of the fixed sleeve, and the three springs 2 penetrate the fixed sleeve and are connected to the pull plate.

[0009] As a preferred technical solution of the utility model, the fixed tooth block is parallel to the screw rod, and the shape of the screw rod is matched with the outer wall of the fixed tooth block.

[0010] As a preferred technical solution of the utility model, a controller is provided inside the speed detector and the drive motor, and the controller inside the speed detector and the drive motor is electrically connected to the control terminal.

[0011] As a preferred technical solution of the utility model,

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The feeding device of the 3D printer is configured such that a wire coil is sleeved on the outside of a fixed sleeve and moved toward a fixed disk. When the wire coil overlaps with a fixed pin, the wire coil presses the fixed pin toward the inside of the fixed sleeve, thereby causing the fixed pin to move toward a locking pin. When the fixed pin overlaps with a locking pin, the locking pin is pressed by the fixed pin. When the wire coil overlaps with the fixed sleeve, a pulling plate is pulled, and the pulling plate drives the locking pin to move, causing the locking pin to be disengaged from the fixing pin. The structure is reset by springs one and two, and the fixing pin fixes the wire coil.

[0014] 2. The feeding device of the 3D printer inserts the circuit through the wire outlet at the bottom of the shell. When the printer sucks in the circuit, the movement of the circuit drives the friction wheel to rotate. The speed detector detects the speed of the friction wheel. When the speed of the friction wheel is abnormal, the speed detector sends a signal to the control terminal, so that the control terminal sends a signal to the fixed disk, so that the drive motor starts, the drive motor drives the screw to rotate, and the screw drives the fixed tooth block to move toward the gear, so that the gear is engaged with the fixed tooth block, thereby fixing the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the fixed casing structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the rotating shaft structure of the utility model;

[0019] Figure 5 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0020] Figure 6 For this utility model Figure 3 The enlarged structural diagram at B in the middle;

[0021] Figure 7 For this utility model Figure 4 Enlarged structural diagram at point C in the middle.

[0022] In the figure: 1. housing; 2. closing door; 3. control terminal; 4. rotating shaft; 5. fixed housing; 6. fixed disk; 7. wire coil; 8. pulling plate; 9. fixing pin; 10. spring 1; 11. locking pin; 12. spring 2; 13. speed detector; 14. friction wheel; 15. gear; 16. driving motor; 17. screw; 18. fixing gear block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 - Figure 7 A feeding device for a 3D printer comprises a shell 1, a closing door 2 is slidably connected to the inner wall of the shell 1, a control terminal 3 is fixedly installed on the outer wall of the shell 1, a rotating shaft 4 is rotatably connected to the inner wall of the shell 1, a fixed sleeve 5 is fixedly sleeved on the outer wall of the rotating shaft 4, a fixed disk 6 is fixedly installed on the inner wall of the shell 1, a wire reel 7 is slidably sleeved on the outer wall of the fixed sleeve 5, a gear 15 is fixedly sleeved on the outer wall of the wire reel 7, a pulling piece 8 is movably connected to one end of the wire reel 7 away from the gear 15, and a fixing pin 9 and a locking pin 11 are slidably connected to the inner wall of the fixed sleeve 5, The inner wall of the fixed sleeve 5 is respectively provided with a spring 10 and a spring 2 12, a speed detector 13 is fixedly installed on the inner wall of the shell 1, and a friction wheel 14 is fixedly installed on the input shaft of the speed detector 13, a drive motor 16 is fixedly installed on the inner wall of the shell 1, and a screw 17 is fixedly installed on the power output shaft of the drive motor 16, and a fixed tooth block 18 is threadedly connected to the outer wall of the screw 17. In the above structure, a wire outlet is provided at the bottom of the inner wall of the shell 1, and the diameter of the wire outlet is adapted to the size of the printing material line, and the friction wheel 14 is located inside the wire outlet at the bottom of the shell 1.

[0025] In a preferred embodiment, the fixing pin 9 passes through the outer wall of the fixing sleeve 5, and the top of the fixing pin 9 is provided with an inclined surface, and the lowest point of the inclined surface on the top of the fixing pin 9 is opened in the direction of the spring 2 12. In the above structure, the wire coil 7 is sleeved on the outer wall of the fixing sleeve 5 from the direction of the spring 2 12 and moved toward the fixed disk 6. When the bottom of the wire coil 7 overlaps with the bottom end of the fixing pin 9, the wire coil 7 presses the fixing pin 9 downward through the slope above the fixing pin 9 until the fixing pin 9 is at the same height as the outer wall of the fixing sleeve 5. When the wire coil 7 passes through the fixing pin 9, the fixing pin 9 is popped upward by the spring 10, so that the fixing pin 9 fits with the spring 10, and then the fixing pin 9 fixes the spring 10 to the outer wall of the fixing sleeve 5.

[0026] In a preferred embodiment, a slope is provided on the side of the locking pin 11 close to the spring 10, and the slope is opened toward the bottom of the fixing pin 9, and the bottom end of the slope on the top of the locking pin 11 is close to the fixing pin 9. In the above structure, when the fixing pin 9 moves downward to the slope of the outer wall of the locking pin 11, the locking pin 11 is pushed in the direction of the spring 2 12 by the downward pressure of the fixing pin 9, so that the locking pin 11 enters the cavity inside the fixing sleeve 5 close to the spring 2 12. When the fixing pin 9 passes through the locking pin 11, the locking pin 11 is pushed out by the spring 2 12, so that the bottom of the locking pin 11 overlaps with the top of the bottom extension block of the fixing pin 9.

[0027] In a preferred embodiment, the fixing pin 9, spring one 10, locking pin 11 and spring two 12 are regarded as a flip assembly, and the number of the flip assemblies is three. The three flip assemblies are arranged in a circular array on the inner wall of the fixed sleeve 5. The three spring twos 12 penetrate the fixed sleeve 5 and are connected to the pull piece 8. In the above structure, by pulling the pull piece 8, the pull piece 8 drives the three locking pins 11 to move.

[0028] In a preferred embodiment, the fixed tooth block 18 is parallel to the gear 15 , and the shape of the screw rod 17 is matched with the outer wall of the gear 15 . In the above structure, the gear 15 cannot rotate due to the engagement between the fixed tooth block 18 .

[0029] In a preferred embodiment, a controller is provided inside the speed detector 13 and the drive motor 16, and the controller inside the speed detector 13 and the drive motor 16 is electrically connected to the control terminal 3. In the above structure, the line moves outward from the line outlet at the bottom of the shell 1, so that the friction wheel 14 rotates due to the movement of the line. When the line transmission speed is abnormal, the controller inside the speed detector 13 sends a signal to the control terminal 3, and the control terminal 3 sends a signal to the drive motor 16 to make it work.

[0030] Working principle: when using this device, pull the closed door 2 to open the closed door 2. At this time, the wire coil 7 is sleeved on the outer wall of the fixed sleeve shell 5 from the direction of the spring 2 12 and moved toward the fixed disk 6. When the bottom of the wire coil 7 overlaps with the bottom end of the fixing pin 9, the wire coil 7 presses the fixing pin 9 downward through the slope above the fixing pin 9 until the fixing pin 9 and the outer wall of the fixing sleeve shell 5 have the same height. When the fixing pin 9 moves downward to the inclined surface of the outer wall of the locking pin 11, the locking pin 11 is pushed in the direction of the spring 2 12 by the downward pressure of the fixing pin 9, so that the locking pin 11 enters the cavity of the fixed sleeve shell 5 close to the spring 2 12. When the fixing pin 9 passes through the locking pin 11, the locking pin 11 is pushed out by the spring 2 12, so that the bottom of the locking pin 11 overlaps with the top of the bottom extension block of the fixing pin 9, fixes the fixing pin 9, and then the fixing pin 9 fixes the spring 10 to the outer wall of the fixed sleeve shell 5. At this time, the pulling piece 8 is pulled to make the pulling piece 8 drive The three locking pins 11 move, so that the engagement relationship between the three locking pins 11 and the three fixing pins 9 disappears, and the fixing pin 9 is popped up by the spring 10, so that the fixing pin 9 fits with the spring 10, and the raw material line is inserted into the outlet at the bottom of the shell 1, so that the line is connected to the inside of the printer. When the printer sucks the line, the line moves inside the outlet at the bottom of the shell 1, driving the friction wheel 14 to rotate, and the friction wheel 14 drives the input shaft of the speed detector 13 to rotate, and the speed detector 13 records the line transmission speed. When the transmission speed is abnormal, the controller inside the speed detector 13 sends a signal to the control terminal 3, and the control terminal 3 sends a signal to the drive motor 16 to make it work, and the drive motor 16 drives the screw 17 to rotate, and the screw 17 drives the fixed tooth block 18 to move toward the gear 15, so that the fixed tooth block 18 is engaged with the gear 15, and the fixed tooth block 18 stops rotating, so that the rotating shaft 4 stops rotating, and the transmission to the printer stops.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feeding device for a 3D printer, comprising a housing (1), characterized in that: The inner wall of the shell (1) is slidably connected to a closing door (2), the outer wall of the shell (1) is fixedly mounted with a control terminal (3), the inner wall of the shell (1) is rotatably connected to a rotating shaft (4), the outer wall of the rotating shaft (4) is fixedly sleeved with a fixed sleeve (5), the inner wall of the shell (1) is fixedly mounted with a fixed disk (6), the outer wall of the fixed sleeve (5) is slidably sleeved with a wire reel (7), the outer wall of the wire reel (7) is fixedly sleeved with a gear (15), the end of the wire reel (7) away from the gear (15) is movably connected with a pulling piece (8), and the fixed sleeve (5) is fixedly sleeved with a fixed disk (6). The inner wall of the fixed sleeve (5) is slidably connected with a fixing pin (9) and a locking pin (11), the inner wall of the fixed sleeve (5) is provided with a spring 1 (10) and a spring 2 (12), the inner wall of the housing (1) is fixedly mounted with a rotation speed detector (13), the input shaft of the rotation speed detector (13) is fixedly mounted with a friction wheel (14), the inner wall of the housing (1) is fixedly mounted with a driving motor (16), the power output shaft of the driving motor (16) is fixedly mounted with a screw (17), and the outer wall of the screw (17) is threadedly connected with a fixed tooth block (18).

2. A feeding device for a 3D printer according to claim 1, characterized in that: The fixing pin (9) penetrates the outer wall of the fixing sleeve (5), and a slope is provided on the top of the fixing pin (9), wherein the lowest point of the slope on the top of the fixing pin (9) is opened in the direction of the second spring (12).

3. A feeding device for a 3D printer according to claim 1, characterized in that: A slope is provided on one side of the lock pin (11) close to the spring 1 (10), and the slope is opened toward the bottom of the fixing pin (9), and the bottom end of the slope at the top of the lock pin (11) is close to the fixing pin (9).

4. A feeding device for a 3D printer according to claim 1, characterized in that: The fixing pin (9), spring one (10), locking pin (11) and spring two (12) are regarded as a flip assembly, and the number of the flip assemblies is three. The three flip assemblies are arranged in a circular array on the inner wall of the fixing sleeve (5). The three springs two (12) penetrate the fixing sleeve (5) and are connected to the pulling piece (8).

5. The feeding device of a 3D printer according to claim 1, characterized in that: The fixed tooth block (18) is parallel to the screw rod (17), and the shape of the screw rod (17) is matched to the outer wall of the fixed tooth block (18).

6. A feeding device for a 3D printer according to claim 1, characterized in that: The rotation speed detector (13) and the drive motor (16) are provided with a controller inside, and the controller inside the rotation speed detector (13) and the drive motor (16) are electrically connected to the control terminal (3).

Images