CN108673881B

CN108673881B - Feeding device of 3D printer

Info

Publication number: CN108673881B
Application number: CN201810734399.4A
Authority: CN
Inventors: 骆晓龙
Original assignee: Wuhu Zhixing Tianxia Industrial Design Co ltd
Current assignee: WUHU ZHIXING TIANXIA INDUSTRIAL DESIGN Co.,Ltd.
Priority date: 2018-07-06
Filing date: 2018-07-06
Publication date: 2020-09-25
Anticipated expiration: 2038-07-06
Also published as: CN108673881A

Abstract

The invention discloses a feeding device of a 3D printer, which relates to the field of 3D printing and comprises a shell and a wire frame, wherein a feeding structure is arranged in the shell, a discharge hole and a feeding port are formed in the surface of the shell, and the discharge hole is connected with a material guide pipe.

Description

Feeding device of 3D printer

Technical Field

The invention relates to 3D printing, in particular to a feeding device of a 3D printer.

Background

A 3D printer, also known as a three-dimensional printer (3DP), is a machine that is an additive manufacturing technique, i.e., a rapid prototyping technique, which is based on a digital model file, and manufactures a three-dimensional object by printing a layer of adhesive material on a layer by layer using an adhesive material such as a special wax material, powdered metal, or plastic. State of the art three-dimensional printers are used to manufacture products. Techniques for building objects in a layer-by-layer printing manner. The principle of the 3D printer is that data and raw materials are put into the 3D printer, and the machine can manufacture products layer by layer according to a program.

The 3D printer feeding mechanism adopting the FDM technology is mostly manufactured by using the traditional machining or injection molding mode, and the machining cost and the machining difficulty are higher. And are often encountered during use: the problems of wire slipping, slow wire running, uneven extrusion force and the like caused by insufficient feeding force or unstable stress direction in the printing process result in the incapability of normal action of the spray head.

The Chinese patent application CN207273881U discloses a feeding device with a 3D printer, which comprises a shell and a driving motor arranged on one side of the shell, wherein a material guide pipe is arranged above the shell and is communicated with a discharge hole formed in the top of the shell, a driving gear and a driven gear are arranged in the shell, the driving gear is connected with an output shaft of the driving motor, a gap is formed between the driving gear and the driven gear, the position of the gap corresponds to the discharge hole, and a feed inlet corresponding to the position of the gap is formed in the bottom of the shell; still be equipped with elastic component in the casing, driven gear rotates and installs on elastic component, and driven gear passes through elastic component and removes for the driving gear, and the device's advantage lies in: can effectively adjust the interval between driving gear and the driven gear, but the device easily makes the wire rod atress inequality cause the silk to walk slowly, and raw and other materials are stored and generally are the coil-like, and the storage in-process may have the fold and so on, easily causes to walk the silk and block and lead to the unable normal action of shower nozzle.

Disclosure of Invention

The invention aims to provide a feeding device of a 3D printer, which aims to solve the defects in the prior art.

The utility model provides a material feeding unit of 3D printer, includes casing and line frame, be equipped with feeding structure in the casing, shell surface opens there is discharge gate and pay-off mouth, the passage is connected to the discharge gate, the wire rod is cup jointed to the pay-off mouth, the wire rod cup joints outside the line frame, the casing left and right sides face is opened logical groove and "T" shape groove, "the slide of" nearly "font is connected to" T "shape groove top, the slide bottom is equipped with the rack," T "shape inslot is equipped with actuating mechanism one, actuating mechanism one drives rack motion, feeding structure includes running roller and transmission shaft, the running roller has three and both ends to connect the transmission shaft, the transmission shaft passes casing side and slide and connects the gear wheel, gear wheel connection actuating mechanism two, actuating mechanism two drive gear wheel rotates with the running roller.

Preferably, a spherical three-way joint is arranged in the feeding port, one side of the feeding port is in threaded connection with a threaded rod, the right interface of the spherical joint is connected with one end of the threaded rod, and the upper interface and the lower interface penetrate through the wire.

Preferably, the first driving mechanism comprises a first motor and a first gear which are fixed on a T-shaped groove, an output shaft of the first motor is connected with the first gear, the first gear is meshed with the rack to move, the second driving mechanism comprises a second motor and a second gear which are fixed on the surface of the sliding plate, an output shaft of the second motor is connected with the second gear, and the second gear is meshed with the large gear to move.

Preferably, a supporting seat is arranged at the bottom end of the wire frame, a groove is formed in the supporting seat, and two sides of the wire frame are placed in cooperation with the groove.

Preferably, a graduated scale is arranged on the side surface of the shell.

Preferably, the shell is made of PVC.

The invention has the advantages that: simple structure, the simple operation through setting up two actuating mechanism for gap between the running roller can be adjusted, thereby adjusts the frictional force between wire rod and the running roller, send the line process stability can not skid, has improved work efficiency, and simultaneously, spherical three way connection's setting up makes the wire rod get into the pay-off structure before be smoothed out with the fingers directly, has reduced the wire rod because of the card machine scheduling problem that the supplied material fold caused.

Drawings

Fig. 1 and 2 are schematic structural diagrams of the present invention.

Fig. 3 is a schematic side view of the housing of the present invention.

FIG. 4 is a schematic view of the connection between the side surface of the housing and the slide plate according to the present invention.

Fig. 5 is a schematic view of a first driving mechanism of the present invention.

FIG. 6 is a schematic view of a second driving mechanism according to the present invention.

The automatic feeding device comprises a shell, a discharge port, a feeding pipe, a wire rod, a through groove, a T-shaped groove, a driving mechanism I, a sliding plate, a rack 19, a ball-shaped tee joint 191, a threaded rod 192, a motor I193, a gear I194, a motor II 195, a gear II 196, a graduated scale 197, a wire frame 2, a supporting seat 21, a feeding structure 3, a roller 31, a transmission shaft 32, a bull gear 33 and a driving mechanism II 1.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example 1

As shown in fig. 1 to 6, a feeding device of a 3D printer includes a housing 1 and a wire frame 2, a feeding structure 3 is disposed in the housing 1, a discharge port 11 and a feeding port 12 are formed on the surface of the housing 1, the discharge port 11 is connected to a feeding pipe 13, the feeding port 12 is sleeved with a wire 14, the wire 14 is sleeved outside the wire frame 2, through slots 15 and T-shaped slots 16 are formed on the left and right sides of the housing 1, a "u" -shaped sliding plate 18 is connected to the upper side of the T-shaped slot 16, a rack 19 is disposed at the bottom end of the sliding plate 18, a first driving mechanism 17 is disposed in the T-shaped slot 16, the first driving mechanism 17 drives the rack 19 to move, the feeding structure 3 includes rollers 31 and transmission shafts 32, the rollers 31 have three ends connected to the transmission shafts 32, the transmission shafts 32 pass through the side of the housing 1 and the sliding plate 18 and are connected to a bull gear 33, the, the second driving mechanism 34 drives the large gear 33 and the roller 31 to rotate.

In this embodiment, a ball-shaped three-way joint 191 is arranged in the feeding port 12, one side of the feeding port 12 is in threaded connection with a threaded rod 192, the right interface of the ball-shaped joint 191 is connected with one end of the threaded rod 192, and the upper and lower interfaces of the ball-shaped joint pass through the wire 14, the first driving mechanism 17 comprises a first motor 193 and a first gear 194 fixed on the T-shaped groove 16, the output shaft of the first motor 193 is connected with the first gear 194, the first gear 194 is in meshed motion with the rack 19, the second driving mechanism 34 comprises a second motor 195 and a second gear 196 fixed on the surface of the sliding plate 18, the output shaft of the second motor 195 is connected with the second gear 196, and the second gear 196.

Example 2

In addition, there is a supporting seat 21 at the bottom of the line frame 2, the supporting seat 21 is provided with a groove, two sides of the line frame 2 are placed in cooperation with the groove, a graduated scale 197 is arranged on the side surface of the shell 1, and the shell 1 is made of PVC.

The working process and principle are as follows: when the wire feeding device is used, a wire 14 passes through the feeding port 12 and enters the spherical three-way joint 191, the threaded rod 192 is screwed, the size of a hole formed by the upper and lower interfaces of the spherical three-way joint 191 and the feeding port 12 is adjusted until the wire 14 can just pass through, the folded wire 14 can be straightened, the wire 14 passes through the bottom and middle rollers 31 and passes through the middle and top rollers 31, the first motor 193 is started to enable the first gear 194 to rotate, the rack 19 moves to drive the sliding plate 18 to move up and down so as to adjust gaps among the rollers 31, gaps among the rollers 31 determine the friction force on the wire 14, the second motor 195 is started, the second gear 196 and the large gear 33 rotate to drive the transmission shaft 32 and the rollers 31 to rotate, the wire 14 moves forward and is stable in the wire feeding process and cannot slip, and the wire 14 passes through the discharging port 11 and enters the material guide pipe 13.

Based on the above, the wire feeding mechanism is simple in structure and convenient and fast to operate, the gap between the rollers 31 can be adjusted by arranging the two driving mechanisms, so that the friction force between the wire 14 and the rollers 31 is adjusted, the wire feeding process is stable and does not slip, the working efficiency is improved, meanwhile, the wire 14 is straightened before entering the feeding structure 3 due to the arrangement of the spherical three-way joint 191, and the problems of jamming and the like of the wire 14 due to incoming material wrinkles are solved.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. The feeding device of the 3D printer is characterized by comprising a shell (1) and a wire frame (2), wherein a feeding structure (3) is arranged in the shell (1), a discharge hole (11) and a feeding hole (12) are formed in the surface of the shell (1), the discharge hole (11) is connected with a material guide pipe (13), the feeding hole (12) is sleeved with a wire (14), the wire (14) is sleeved outside the wire frame (2), through grooves (15) and T-shaped grooves (16) are formed in the left side surface and the right side surface of the shell (1), a T-shaped sliding plate (18) is connected above the T-shaped grooves (16), a rack (19) is arranged at the bottom end of the sliding plate (18), a first driving mechanism (17) is arranged in the T-shaped grooves (16), the first driving mechanism (17) drives the rack (19) to move, the feeding structure (3) comprises a roller (31) and a transmission shaft (32), running roller (31) have three and both ends to connect transmission shaft (32), transmission shaft (32) pass casing (1) side and slide (18) and connect gear wheel (33), drive mechanism two (34) are connected in gear wheel (33), drive mechanism two (34) drive gear wheel (33) rotate with running roller (31), be equipped with spherical three way connection (191) in pay-off mouth (12), pay-off mouth (12) one side threaded connection threaded rod (192), wire rod (14) are passed to two interfaces about spherical connection (191) the interface connection threaded rod (192) one end on the right and.

2. The feeding device of the 3D printer according to claim 1, wherein: the first driving mechanism (17) comprises a first motor (193) and a first gear (194) which are fixed on the T-shaped groove (16), the output shaft of the first motor (193) is connected with the first gear (194), the first gear (194) is meshed with the rack (19) to move, the second driving mechanism (34) comprises a second motor (195) and a second gear (196) which are fixed on the surface of the sliding plate (18), the output shaft of the second motor (195) is connected with the second gear (196), and the second gear (196) is meshed with the large gear (33) to move.

3. The feeding device of the 3D printer according to claim 1, wherein: the supporting seat (21) is arranged at the bottom end of the wire frame (2), a groove is formed in the supporting seat (21), and two sides of the wire frame (2) are placed in a matched mode with the groove.

4. The feeding device of the 3D printer according to claim 1, wherein: the side surface of the shell (1) is provided with a graduated scale (197).

5. The feeding device of the 3D printer according to claim 1, wherein: the shell (1) is made of PVC.