Feeding structure of 3D printer

Abstract

The utility model provides a feeding structure of a 3D printer, and relates to the field of 3D printing, the feeding structure comprises a supporting box body, the upper part of the supporting box body is fixedly connected with a feeding head, the feeding head penetrates through the top of the supporting box body, and the upper end of the feeding head is connected with a feeding pipe; a threaded adjusting piece is arranged on the right end face of the supporting box body. Through the arrangement of a locking gear and an anti-loosening part, the phenomenon that a nut and a threaded rod are prone to loosening in the long-time using process is avoided, the reliability of the clamping mechanism in the feeding structure during auxiliary clamping operation on plastic wires is improved, and therefore the printing quality of the 3D printer is improved; the feeding structure solves the problems that when a feeding structure of an existing 3D printer adjusts the clamping force of a clamping mechanism, the clamping force is adjusted by screwing a threaded structure in the clamping mechanism, and the threaded structure is prone to loosening in the long-time using process; and therefore, the reliability of the clamping mechanism in the feeding structure during auxiliary clamping operation on the plastic wires is reduced.

Description

Technical Field

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

[0002] With the development of science and technology, 3D printing technology has been widely used in various fields, such as manufacturing, healthcare, and construction. During the 3D printing process, the printing material (usually plastic filament) needs to be accurately and stably delivered to the print head through a feeding structure. The feeding structure of a 3D printer usually includes a support box, a box cover, a motor, a drive wheel, and a clamping mechanism. The motor, drive wheel, and clamping mechanism work together to push the plastic filament into the heated print head, completing the subsequent 3D printing process.

[0003] However, in actual use, the current 3D printer feeding structure can adjust the clamping force of the clamping mechanism according to plastic filaments of different diameters. However, when adjusting the clamping force of the clamping mechanism, the adjustment is achieved by twisting the threaded structure in the clamping mechanism, and the threaded structure is prone to loosening during long-term use, thereby reducing the reliability of the clamping mechanism in the feeding structure in assisting the clamping operation of the plastic filament. Moreover, when the internal structure of the current 3D printer feeding structure needs to be inspected, the box cover is fixed to the supporting box body by multiple screws. Therefore, when the box cover needs to be removed to inspect the internal structure of the supporting box body, it is necessary to use tools such as a screwdriver to remove the screws before removing the box cover, thereby reducing the convenience of the feeding structure during inspection. Utility Model Content

[0004] The disclosed embodiments relate to a feeding structure of a 3D printer. By arranging a locking gear and an anti-loosening component, the front ends of the two locking blocks can be brought into close contact with the rear side of the outer peripheral surface of the locking gear after the clamping force of the clamping wheel is adjusted, thereby enabling the locking gear, nut and threaded rod to be effectively locked and limited, thereby preventing the nut and threaded rod from loosening easily during long-term use. Therefore, the reliability of the clamping mechanism in the feeding structure when performing auxiliary clamping operations on plastic filaments is improved, thereby improving the printing quality of the 3D printer.

[0005] In a first aspect of the present disclosure, a feeding structure of a 3D printer is provided, which specifically includes: a supporting box body, a feeding head is fixedly connected to the upper part of the supporting box body, and the feeding head passes through the top of the supporting box body, and the upper end of the feeding head is connected to a feeding tube; a threaded adjustment piece is provided on the right end face of the supporting box body, and an anti-loosening component is installed on the right end face of the supporting box body at the rear side of the threaded adjustment piece; a frame plate is fixedly connected to the front side of the outer side of the supporting box body, and a box cover is installed on the front end face of the frame plate; a clamping mechanism is provided at the left end of the threaded adjustment piece inside the supporting box body; a feeding tube is fixedly connected to the lower part of the supporting box body, and the feeding tube passes through the bottom of the supporting box body, and plastic filament is inserted into the feeding tube, the feeding head and the inner part of the feeding tube; the threaded adjustment piece includes a threaded rod, a nut and a locking gear, and the outer side of the threaded rod is fixedly connected to the feeding tube, a nut and a locking gear. The nut is threadedly connected, and the nut is rotatably connected to the right end face of the support box body, and a locking gear is fixedly installed on the outside of the nut; the anti-loosening component includes a rectangular shell, a rectangular slider, a tightening block, a locking block, an L-shaped pull rod, an L-shaped limit plate and an arched limit notch, the rectangular shell is fixedly installed on the middle part of the rear side of the right end face of the support box body, and a rectangular slider is slidably connected inside the rectangular shell, the front end face of the rectangular slider is fixedly connected to the tightening block that passes through the front part of the rectangular shell, and the front end face of the tightening block is fixedly connected to two locking blocks; the rear end face of the rectangular slider is rotatably connected to the L-shaped pull rod that passes through the rear part of the rectangular shell, and the outside of the L-shaped pull rod is located inside the rectangular shell and is sleeved with a spring, the rear end face of the rectangular shell is fixedly connected to the L-shaped limit plate, and an arched limit notch is opened on the rear side of the right end face of the L-shaped limit plate.

[0006] In at least some embodiments, a positioning hole is provided at each of the four corners of the front end surface of the frame plate, and a rectangular slot is provided at the middle of the upper and lower sides of the front end surface of the frame plate.

[0007] In at least some embodiments, a feeding motor is installed at the left end of the rear side surface inside the support box body, and a rotating shaft is fixedly installed on the rotating shaft of the feeding motor, and a driving wheel is fixedly installed outside the rotating shaft; the driving wheel is funnel-shaped.

[0008] In at least some embodiments, when the anti-loosening component is in the anti-loosening state, the front ends of the two locking blocks are in close contact with the rear side of the outer peripheral surface of the locking gear.

[0009] In at least some embodiments, a bearing is provided inside the front end surface of the box cover, and two rectangular openings are provided on the upper and lower sides of the front end surface of the box cover, each rectangular opening is slidably connected to an elastic clip, and a spring is installed inside each rectangular opening; a positioning column is fixedly connected to the four corners of the rear end surface of the box cover.

[0010] In at least some embodiments, when the box cover and the frame plate are in an installed state, the four positioning pins are respectively plugged into the four positioning holes, and the four elastic clips are respectively plugged into the two rectangular bayonet holes.

[0011] In at least some embodiments, the clamping mechanism includes a clamping plate, a transverse sliding rod, a clamping block, a clamping wheel and a guide sliding rod. The right end face of the clamping plate is fixedly connected to four guide sliding rods that pass through the right side wall of the support box body, and the guide sliding rod is slidably connected to the right side wall of the support box body. Four transverse sliding rods are slidably connected to the clamping plate, and the left ends of the four transverse sliding rods are fixedly connected to the clamping block. A circular limit block is provided at the right end of each transverse sliding rod, and a spring is provided on the outside of each transverse sliding rod located on the left side of the clamping plate; the left side of the clamping block is rotatably connected to the clamping wheel; the middle part of the right end face of the clamping plate is fixedly connected to the left end of the threaded rod.

[0012] The utility model provides a feeding structure of a 3D printer, which has the following beneficial effects:

[0013] 1. By setting the locking gear and the anti-loosening component, when the clamping force of the clamping wheel is adjusted, the front ends of the two locking blocks are in close contact with the rear side of the outer peripheral surface of the locking gear, so that the locking gear, nut and threaded rod can be effectively locked and limited, avoiding the nut and threaded rod from loosening easily during long-term use. Therefore, the reliability of the clamping mechanism in the feeding structure in the auxiliary clamping operation of the plastic filament is improved, thereby improving the printing quality of the 3D printer.

[0014] 2. Through the arrangement of the elastic clips and the rectangular bayonet, when it is necessary to inspect and repair the internal structure of the support box body, it is only necessary to pinch the four elastic clips toward the middle side at the same time with both hands, and then remove the box cover forward, and then carry out the inspection and repair work on the internal structure of the support box body. Therefore, when it is necessary to remove the box cover to inspect and repair the internal structure of the support box body, the box cover can be removed without the help of tools such as screwdrivers, thereby improving the convenience of the feeding structure during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0016] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached figure:

[0018] Figure 1 A structural diagram showing the overall structure of the present application;

[0019] Figure 2 A schematic diagram showing the structure of the present application from a rear perspective is shown;

[0020] Figure 3 A schematic diagram showing the structure of the present application in a split state is shown;

[0021] Figure 4 A schematic structural diagram of the support box and the clamping mechanism of the present application is shown;

[0022] Figure 5 A schematic structural diagram of the locking gear and the anti-loosening component of the present application is shown.

[0023] Reference Signs List

[0024] 1. Support box body; 101. Feed head; 102. Feed pipe; 103. Feed pipe; 104. Frame; 105. Positioning jack; 106. Feed motor; 107. Rotating shaft; 108. Drive wheel; 109. Rectangular bayonet;

[0025] 2. Threaded adjustment member; 201. Threaded rod; 202. Nut; 203. Locking gear;

[0026] 3. Anti-loosening components; 301. Rectangular housing; 302. Rectangular slider; 303. Tightening block; 304. Locking block; 305. L-shaped pull rod; 306. L-shaped limit plate; 307. Arched limit notch;

[0027] 4. Box cover; 401. Bearing; 402. Rectangular opening; 403. Elastic snap fastener; 404. Positioning pin;

[0028] 5. Clamping mechanism; 501. Clamping plate; 502. Transverse slide bar; 503. Clamping block; 504. Clamping wheel; 505. Guide slide bar;

[0029] 6. Plastic wire. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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 described 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.

[0031] Example 1: Please refer to Figures 1 to 5 :

[0032] The utility model proposes a feeding structure of a 3D printer, comprising: a supporting box body 1, a feeding head 101 fixedly connected to the upper part of the supporting box body 1, and the feeding head 101 passes through the top of the supporting box body 1, and the upper end of the feeding head 101 is connected to a feeding pipe 102; a threaded adjustment member 2 is provided on the right end surface of the supporting box body 1, and an anti-loosening component 3 is installed on the right end surface of the supporting box body 1 behind the threaded adjustment member 2; a frame plate 104 is fixedly connected to the front side of the outer side of the supporting box body 1, and the front end surface of the frame plate 104 is provided with a screw thread adjusting member 2. Equipped with a box cover 4; a clamping mechanism 5 is provided at the left end of the threaded adjustment member 2 inside the support box body 1; a feed pipe 103 is fixedly connected to the lower part of the support box body 1, and the feed pipe 103 passes through the bottom of the support box body 1, and a plastic wire 6 is inserted into the feed pipe 103, the feed head 101 and the feed pipe 102; the threaded adjustment member 2 includes a threaded rod 201, a nut 202 and a locking gear 203, the threaded rod 201 is externally connected to the nut 202 by a thread, and the nut 202 is rotatably connected to the support box The right end surface of the body 1, and the locking gear 203 is fixedly installed on the outside of the nut 202; the anti-loosening component 3 includes a rectangular shell 301, a rectangular slider 302, a tightening block 303, a locking block 304, an L-shaped pull rod 305, an L-shaped limiting plate 306 and an arched limiting notch 307, the rectangular shell 301 is fixedly installed on the middle part of the rear side of the right end surface of the supporting box body 1, and the rectangular slider 302 is slidably connected to the inside of the rectangular shell 301, and the front end surface of the rectangular slider 302 is fixedly connected to a through-rectangular shell 3 01, and the front end face of the tightening block 303 is fixedly connected to two locking blocks 304; the rear end face of the rectangular slider 302 is rotatably connected to an L-shaped pull rod 305 that passes through the rear part of the rectangular shell 301, and the outside of the L-shaped pull rod 305 is located inside the rectangular shell 301 and is provided with a spring, the rear end face of the rectangular shell 301 is fixedly connected to an L-shaped limit plate 306, and the rear side of the right end face of the L-shaped limit plate 306 is provided with an arched limit notch 307 for limiting the L-shaped pull rod 305.

[0033] A positioning hole 105 is provided at each of the four corners of the front end surface of the frame plate 104 , and a rectangular bayonet 109 is provided in the middle of the upper and lower sides of the front end surface of the frame plate 104 for engaging with the elastic bayonet 403 .

[0034] A feeding motor 106 is installed at the left end of the rear side surface inside the support box body 1, and a rotating shaft 107 is fixedly installed on the rotating shaft of the feeding motor 106, and a driving wheel 108 is fixedly installed outside the rotating shaft 107; the driving wheel 108 is funnel-shaped, which improves the contact cotton knots between the driving wheel 108 and the outer peripheral surface of the plastic wire 6.

[0035] When the anti-loosening component 3 is in the anti-loosening state, the front ends of the two locking blocks 304 are in close contact with the rear side of the outer peripheral surface of the locking gear 203, so that the locking gear 203, the nut 202 and the threaded rod 201 are effectively prevented from loosening.

[0036] The clamping mechanism 5 includes a clamping plate 501, a transverse slide bar 502, a clamping block 503, a clamping wheel 504 and a guide slide bar 505. The right end face of the clamping plate 501 is fixedly connected to four guide slide bars 505 that pass through the right side wall of the support box body 1, and the guide slide bar 505 is slidably connected to the right side wall of the support box body 1. Four transverse slide bars 502 are slidably connected to the clamping plate 501, and the left ends of the four transverse slide bars 502 are fixedly connected to the clamping block 503. A circular limit block is provided at the right end of each transverse slide bar 502, and a spring is sleeved on the outside of each transverse slide bar 502 located on the left side of the clamping plate 501; the left side of the clamping block 503 is rotatably connected to the clamping wheel 504; the middle part of the right end face of the clamping plate 501 is fixedly connected to the left end of the threaded rod 201; through the setting of the clamping mechanism 5, it is used to clamp the plastic wire 6.

[0037] Example 2, based on Example 1, Figures 1 to 3 As shown, a bearing 401 is provided inside the front end face of the box cover 4, and two rectangular openings 402 are provided on the upper and lower sides of the front end face of the box cover 4, each rectangular opening 402 is slidably connected to an elastic clip 403, and a spring is installed inside each rectangular opening 402; a positioning column 404 is fixedly connected to the four corners of the rear end face of the box cover 4; when the box cover 4 and the frame plate 104 are in the installed state, the four positioning columns 404 are respectively plugged into the four positioning holes 105, and the four elastic clips 403 are respectively plugged into the two rectangular clips 109; through the arrangement of the elastic clips 403 and the rectangular clips 109, when it is necessary to inspect the internal structure of the support box body 1, the box cover 4 can be removed without the aid of tools such as screwdrivers, thereby improving the convenience of the feeding structure during inspection.

[0038] The working principle of this embodiment is as follows: when in use, the support box body 1 is fixedly installed on the outer wall of the 3D printer, and then the plastic filament 6 is passed from bottom to top into the feeding tube 103, the feeding head 101 and the feeding tube 102, and then the clamping force of the clamping wheel 504 is adjusted according to the diameter of the plastic filament 6. When adjusting, first pull the L-shaped pull rod 305 backward, and move the rectangular slider 302, the tightening block 303 and the two locking blocks 304 backward, so that the two locking blocks 304 are separated from the rear side of the outer circumference of the locking gear 203, and then rotate the L-shaped pull rod 305 to be stuck in the arched limiting notch 307 to limit the L-shaped pull rod 305, and then rotate the nut 202 to make the threaded rod 201 move left and right with the clamping plate 501, the transverse sliding rod 502, the clamping block 503 and the clamping wheel 504 under the action of the thread, so that the clamping force borne by the plastic filament 6 is adjusted. After the adjustment is completed, the L-shaped pull rod 305 is rotated upward to separate the L-shaped pull rod 305 from the arched limiting notch 307. At this time, the L-shaped pull rod 305 loses its limiting effect, and then the rectangular slider 302 moves to the left with the tightening block 303 and the two locking blocks 304 under the action of the external spring force of the L-shaped pull rod 305, so that the front ends of the two locking blocks 304 are in close contact with the rear side of the outer circumference of the locking gear 203, thereby effectively locking and limiting the locking gear 203, the nut 202 and the threaded rod 201, and preventing the nut 202 and the threaded rod 201 from loosening easily during long-term use; when feeding is needed, the feeding motor 106 drives the rotating shaft 107 and the driving wheel 108 to rotate counterclockwise, and then the plastic filament 6 is transported upward by the counterclockwise rotating driving wheel 108, so that the plastic filament 6 finally reaches the print head for subsequent 3D printing work of the 3D printer.

[0039] When it is necessary to inspect the internal structure of the support box body 1, first use both hands to pinch the four elastic clips 403 towards the middle side at the same time, so that the four elastic clips 403 are separated from the two rectangular clips 109 respectively, and then remove the box cover 4 forward, and then inspect the internal structure of the support box body 1.

[0040] In this article, there are several points to note:

[0041] 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0042] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0043] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A feeding structure for a 3D printer, comprising: The support box body (1) is characterized in that a feed head (101) is fixedly connected to the upper part of the support box body (1), and the feed head (101) passes through the top of the support box body (1), and the upper end of the feed head (101) is connected to a feed pipe (102); the support box body (1) is characterized in that a threaded adjustment member (2) is provided on the right end face of the support box body (1), and an anti-loosening member (3) is installed on the right end face of the support box body (1) at the rear side of the threaded adjustment member (2); the outside of the support box body (1) A frame plate (104) is fixedly connected to the front side, and a box cover (4) is installed on the front end surface of the frame plate (104); a clamping mechanism (5) is provided at the left end of the threaded adjustment member (2) inside the support box body (1); a feed pipe (103) is fixedly connected to the lower part of the support box body (1), and the feed pipe (103) passes through the bottom of the support box body (1), and plastic wire (6) is inserted into the feed pipe (103), the feed head (101) and the feed pipe (102); The threaded adjusting member (2) comprises a threaded rod (201), a nut (202) and a locking gear (203); the threaded rod (201) is externally connected to the nut (202) through a thread, and the nut (202) is rotatably connected to the right end face of the support box body (1), and the locking gear (203) is fixedly installed on the outside of the nut (202); the anti-loosening component (3) comprises a rectangular shell (301), a rectangular slider (302), a tightening block (303), a locking block (304), an L-shaped pull rod (305), an L-shaped limiting plate (306) and an arched limiting notch (307); the rectangular shell (301) is fixedly installed at the middle of the rear side of the right end face of the support box body (1), and A rectangular slider (302) is slidably connected to the interior of the rectangular shell (301), and the front end surface of the rectangular slider (302) is fixedly connected to a tightening block (303) that passes through the front portion of the rectangular shell (301), and the front end surface of the tightening block (303) is fixedly connected to two locking blocks (304); the rear end surface of the rectangular slider (302) is rotatably connected to an L-shaped pull rod (305) that passes through the rear portion of the rectangular shell (301), and the outside of the L-shaped pull rod (305) is located inside the rectangular shell (301) and is sleeved with a spring, and the rear end surface of the rectangular shell (301) is fixedly connected to an L-shaped limiting plate (306), and an arched limiting notch (307) is provided on the rear side of the right end surface of the L-shaped limiting plate (306).

2. A feeding structure for a 3D printer according to claim 1, characterized in that: A positioning socket (105) is provided at each of the four corners of the front end surface of the frame plate (104), and a rectangular bayonet (109) is provided at the middle of the upper and lower sides of the front end surface of the frame plate (104).

3. The feeding structure of a 3D printer according to claim 1, characterized in that: A feeding motor (106) is installed at the left end of the rear side surface inside the supporting box body (1), and a rotating shaft (107) is fixedly installed on the rotating shaft of the feeding motor (106), and a driving wheel (108) is fixedly installed outside the rotating shaft (107); the driving wheel (108) is funnel-shaped.

4. The feeding structure of a 3D printer according to claim 1, characterized in that: When the anti-loosening component (3) is in the anti-loosening state, the front ends of the two locking blocks (304) are in close contact with the rear side of the outer peripheral surface of the locking gear (203).

5. The feeding structure of a 3D printer according to claim 2, characterized in that: A bearing (401) is provided inside the front end surface of the box cover (4), and two rectangular openings (402) are provided on both upper and lower sides of the front end surface of the box cover (4), each rectangular opening (402) is slidably connected to an elastic fastener (403), and a spring is installed inside each rectangular opening (402); and a positioning column (404) is fixedly connected to the four corners of the rear end surface of the box cover (4).

6. The feeding structure of a 3D printer according to claim 5, characterized in that: When the box cover (4) and the frame plate (104) are in an installed state, the four positioning pins (404) are respectively plugged into the four positioning holes (105), and the four elastic clips (403) are respectively plugged into the two rectangular bayonet holes (109).

7. The feeding structure of a 3D printer according to claim 1, characterized in that: The clamping mechanism (5) comprises a clamping plate (501), a transverse slide bar (502), a clamping block (503), a clamping wheel (504) and a guide slide bar (505). The right end face of the clamping plate (501) is fixedly connected with four guide slide bars (505) that pass through the right side wall of the supporting box body (1), and the guide slide bars (505) are slidably connected to the right side wall of the supporting box body (1). The clamping plate (501) is slidably connected with four transverse slide bars. Rod (502), and the left ends of the four transverse sliding rods (502) are fixedly connected with a clamping block (503), the right end of each transverse sliding rod (502) is provided with a circular limit block, and the outside of each transverse sliding rod (502) is located on the left side of the clamping plate (501) and is sleeved with a spring; the left side of the clamping block (503) is rotatably connected with a clamping wheel (504); the middle part of the right end face of the clamping plate (501) is fixedly connected to the left end of the threaded rod (201).

Images