阅读说明：本技术 3d打印机用耗材预处理机构 (Consumable pretreatment mechanism for 3D printer ) 是由 丁孙莹 赖传榜 于 2020-12-17 设计创作，主要内容包括：本发明公开了3D打印机用耗材预处理机构,包括3D打印机壳、第一凹槽、第二凹槽、弹簧、横向调节机构、3D打印头、送料筒、步进电机、进料斗和伺服电机；3D打印机壳：侧面底部固定有连接耳,连接耳的内侧上下滑动连接有活杆,所述活杆的顶端固定有限位块,活杆的底端固定有脚垫,所述连接耳上开设有限位槽；该3D打印机用耗材预处理机构,采用螺旋给料方式,避免了活塞式加压方式不能够持续给料的弊端,提高了生产的效率,其仅对加热筒内的料体进行加热,而不是对整个储料进行加热,避免了熔融料体使用不完造成浪费的情况,节约了原料,同时,由于其不必对整个储料进行加热,所以可以减少加热做功,节约了能耗。(The invention discloses a consumable pretreatment mechanism for a 3D printer, which comprises a 3D printer shell, a first groove, a second groove, a spring, a transverse adjusting mechanism, a 3D printing head, a feeding barrel, a stepping motor, a feeding hopper and a servo motor, wherein the feeding barrel is arranged in the shell; 3D prints the casing: the bottom of the side surface is fixed with a connecting lug, the inner side of the connecting lug is connected with a movable rod in a vertical sliding manner, the top end of the movable rod is fixed with a limiting block, the bottom end of the movable rod is fixed with a foot pad, and the connecting lug is provided with a limiting groove; this 3D is consumptive material preliminary treatment mechanism for printer, adopt the spiral feed mode, avoided the drawback that piston pressurization mode can not last the feed, improved the efficiency of production, it only heats the material body in the cartridge heater, rather than heating whole storage, avoided the incomplete extravagant condition that causes of fused material body use, the raw materials have been practiced thrift, simultaneously, because it needn't heat whole storage, so can reduce the heating work, the energy consumption has been practiced thrift.)

The utility model provides a 3D is consumptive material preliminary treatment mechanism for printer which characterized in that: the automatic feeding device comprises a 3D printing machine shell (1), a first groove (23), a second groove (24), a spring (26), a transverse adjusting mechanism (6), a 3D printing head (19), a feeding barrel (12), a stepping motor (3), a feeding hopper (11) and a servo motor (13);

3D printer housing (1): a connecting lug (30) is fixed at the bottom of the side face, a movable rod (27) is connected to the inner side of the connecting lug (30) in a vertical sliding mode, a limiting block (28) is fixed at the top end of the movable rod (27), a foot pad (25) is fixed at the bottom end of the movable rod (27), a limiting groove (29) is formed in the connecting lug (30), and the limiting block (28) and the limiting groove (29) are arranged in a vertical corresponding mode;

first groove (23): the bottom of the connecting lug (30) is provided with a coaxial line with the movable rod (27);

second groove (24): is arranged on the top of the foot pad (25) and is coaxial with the movable rod (27);

spring (26): the spring is sleeved on the movable rod (27), one end of the spring (26) extends into the first groove (23), and the other end of the spring (26) extends into the second groove (24);

lateral adjustment mechanism (6): the adjusting mechanism is arranged on the inner side surface of the 3D printing machine shell (1), and a longitudinal adjusting mechanism (7) is arranged on the adjusting part of the transverse adjusting mechanism (6);

3D print head (19): the heating device is assembled on an adjusting part of a longitudinal adjusting mechanism (7), the top of the 3D printing head (19) is fixedly communicated with a heating cylinder (21), heat-conducting fins (22) are uniformly fixed on the inner side of the heating cylinder (21), and an electromagnetic heater (20) is installed on the outer side of the heating cylinder (21);

a feeding cylinder (12): the feeding device is fixed at the top of the 3D printing machine shell (1) and is communicated with the heating cylinder (21) through a feeding pipe (18), the inner side of the feeding cylinder (12) is rotatably connected with a middle shaft (16), and the side surface of the middle shaft (16) is fixed with a helical blade (17);

stepping motor (3): the stepping motor is arranged on the side surface of the 3D printing machine shell (1), and an output shaft of the stepping motor (3) is in transmission connection with the end part of a middle shaft (16) through a first transmission mechanism (4);

feed hopper (11): the feeding device is communicated and fixed on a feeding barrel (12), a driving mechanism (9) is installed at the position of a feeding hole of the feeding hopper (11), a cover plate (10) is fixed on a movable part of the driving mechanism (9), and the cover plate (10) is in sliding connection with the feeding hopper (11) through a sliding mechanism (8);

servo motor (13): the output shaft of the servo motor (13) is in transmission connection with the rotating end part of the driving mechanism (9) through a second transmission mechanism (5);

the automatic printing machine further comprises an electric glass door (15), wherein the electric glass door (15) is installed on the front side of the 3D printing machine shell (1), and the input ends of the electric glass door (15), the servo motor (13), the stepping motor (3) and the electromagnetic heater (20) are electrically connected with the output end of an external controller.

2. The consumable preprocessing mechanism for a 3D printer of claim 1, wherein: the transverse adjusting mechanism (6) comprises a first linear motor (61) and a first guide rail (62), the first guide rail (62) is fixed on the inner side face of the 3D printing machine shell (1), the first linear motor (61) is assembled on the first guide rail (62), and the input end of the first linear motor (61) is electrically connected with the output end of an external controller.

3. The consumable preprocessing mechanism for a 3D printer of claim 2, wherein: the longitudinal adjusting mechanism (7) comprises a second guide rail (71) and a second linear motor (72), the end portion of the second guide rail (71) is fixedly connected with the first linear motor (61), the second linear motor (72) is assembled on the second guide rail (71), the 3D printing head (19) is assembled on the side face of the second linear motor (72), and the input end of the second linear motor (72) is electrically connected with the output end of an external controller.

4. The consumable preprocessing mechanism for a 3D printer of claim 1, wherein: the first transmission mechanism (4) comprises a driving wheel (41), a belt (42) and a driven wheel (43), the driving wheel (41) is fixed on an output shaft of the stepping motor (3), the driven wheel (43) is fixed at the outer end of the middle shaft (16), and the driven wheel (43) is in transmission connection with the driving wheel (41) through the belt (42).

5. The consumable preprocessing mechanism for a 3D printer of claim 1, wherein: the driving wheel (41) and the driven wheel (43) are both V-shaped belt wheels, and the belt (42) is a V-shaped belt.

6. The consumable preprocessing mechanism for a 3D printer of claim 1, wherein: actuating mechanism (9) are including lead screw (91) and drive nut (92), and lead screw (91) have two sets ofly, and two sets of lead screw (91) longitudinal symmetry rotate and install the side at feeder hopper (11), drive nut (92) and lead screw (91) threaded connection, the one end and the drive nut (92) fixed connection of apron (10).

7. The consumable preprocessing mechanism for a 3D printer of claim 6, wherein: the second transmission mechanism (5) comprises a driving gear (51), a chain (52) and a driven gear (53), the driving gear (51) is fixed on an output shaft of the servo motor (13), the driven gear (53) is fixed at the end of the screw rod (91), and the driven gear (53) is in transmission connection with the driving gear (51) through the chain (52).

8. The consumable preprocessing mechanism for a 3D printer of claim 1, wherein: slide mechanism (8) include spout (81) and slide rail (82), and spout (81) are seted up on feeder hopper (11), slide rail (82) are fixed in the bottom of apron (10), and slide rail (82) sliding connection is in the inboard of spout (81).

9. The consumable preprocessing mechanism for a 3D printer of claim 1, wherein: still include motor shock pad (2), motor shock pad (2) have two sets ofly, and two sets of motor shock pads (2) correspond and paste in the junction of step motor (3) and 3D printing casing (1) and the junction of servo motor (13) and feeder hopper (11).

10. The consumable preprocessing mechanism for a 3D printer of claim 1, wherein: the device also comprises an observation window (14), wherein the observation window (14) is arranged on the side surface of the feeding barrel (12).

Technical Field

The invention relates to the technical field of 3D printing devices, in particular to a consumable pretreatment mechanism for a 3D printer.

Background

Three-dimensional printing, which is one of rapid prototyping technologies, is a technology for constructing an object by using an adhesive material such as powdered metal or plastic and the like and by printing layer by layer on the basis of a digital model file, and has been used for manufacturing models in the fields of mold manufacturing, industrial design and the like in the past, and is gradually used for directly manufacturing some products;

in the prior art: the patent of the publication No. CN206633422U discloses a consumable pretreatment device for a 3D printer, which comprises a 3D printer shell and a hot melting crucible, wherein a feed inlet is arranged on one side of the 3D printer shell, an up-and-down sliding door is arranged at the feed inlet, the hot melting crucible is fixedly arranged on the other side in the 3D printer shell, a heat insulation layer is arranged on the outer side of the hot melting crucible, a piston is arranged right above an opening of the hot melting crucible, the top of the piston is fixedly connected with the bottom end of an electric telescopic rod, the top end of the electric telescopic rod is fixed on a pressure sensor arranged on a fixed base, the fixed base is fixedly arranged on the top in the 3D printer shell, a PLC controller is arranged at the bottom of one side of the 3D printer shell, the PLC controller needs the piston to extend out of the crucible when feeding is needed, then, the material heating device has no continuous feeding capacity, and is used for heating the material in the whole hot melting crucible, if the material in the hot melting crucible is not used, the 3D printer stops working at the moment, the material in the hot melting crucible is caked after being cooled, and the material cannot be normally used, so that the waste of raw materials is caused.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a consumable pretreatment mechanism for a 3D printer, which adopts a spiral feeding mode, avoids the defect that a piston type pressurization mode cannot continuously feed materials, improves the production efficiency, only heats a material body in a heating cylinder, but not heats the whole stored material, avoids the waste caused by incomplete use of a molten material body, saves raw materials, and simultaneously can reduce heating work, save energy consumption and effectively solve the problems in the background technology because the whole stored material is not required to be heated.

In order to achieve the purpose, the invention provides the following technical scheme: the consumable pretreatment mechanism for the 3D printer comprises a 3D printer shell, a first groove, a second groove, a spring, a transverse adjusting mechanism, a 3D printing head, a feeding barrel, a stepping motor, a feeding hopper and a servo motor;

3D prints the casing: the bottom of the side surface is fixed with a connecting lug, the inner side of the connecting lug is connected with a movable rod in a vertical sliding manner, the top end of the movable rod is fixed with a limiting block, the bottom end of the movable rod is fixed with a foot pad, the connecting lug is provided with a limiting groove, and the limiting block and the limiting groove are arranged in a vertical corresponding manner;

a first groove: the movable rod is arranged at the bottom of the connecting lug and is coaxial with the movable rod;

a second groove: the movable rod is arranged on the top of the foot pad and is coaxial with the movable rod;

a spring: the movable rod is sleeved with the spring, one end of the spring extends into the first groove, and the other end of the spring extends into the second groove;

the transverse adjusting mechanism: the adjusting mechanism is arranged on the inner side surface of the 3D printing machine shell, and a longitudinal adjusting mechanism is arranged on the adjusting part of the transverse adjusting mechanism;

3D printing head: the heating device is assembled on an adjusting part of the longitudinal adjusting mechanism, the top of the 3D printing head is fixedly communicated with a heating cylinder, heat conducting fins are uniformly fixed on the inner side of the heating cylinder, and an electromagnetic heater is installed on the outer side of the heating cylinder;

a feeding barrel: the feeding device is fixed at the top of the 3D printing machine shell and communicated with the heating cylinder through a feeding pipe, the inner side of the feeding cylinder is rotatably connected with a middle shaft, and the side surface of the middle shaft is fixed with a helical blade;

a stepping motor: the output shaft of the stepping motor is in transmission connection with the end part of the middle shaft through a first transmission mechanism;

a feed hopper: the feeding device is communicated and fixed on the feeding barrel, a driving mechanism is installed at the position of a feeding hole of the feeding hopper, a cover plate is fixed on a movable part of the driving mechanism, and the cover plate is in sliding connection with the feeding hopper through a sliding mechanism;

a servo motor: the output shaft of the servo motor is in transmission connection with the rotating end part of the driving mechanism through a second transmission mechanism;

the automatic printing machine further comprises an electric glass door, wherein the electric glass door is installed on the front side of the 3D printing machine shell, and the input ends of the electric glass door, the servo motor, the stepping motor and the electromagnetic heater are electrically connected with the output end of the external controller.

Further, horizontal adjustment mechanism includes first linear electric motor and first guide rail, and the inside side at 3D printing casing is fixed to first guide rail, first linear electric motor assembles on first guide rail, and the output of external control ware is connected to first linear electric motor's input electricity, and first linear electric motor is linear motion along first guide rail to beat printer head's horizontal operating position to 3D and adjust, its regulating capability is strong, has improved the ability of printing.

Furthermore, vertical adjustment mechanism includes second guide rail and second linear electric motor, the tip and the first linear electric motor fixed connection of second guide rail, second linear electric motor assembles on the second guide rail, and 3D beats printer head assembly in second linear electric motor's side, the output of external control ware is connected to second linear electric motor's input electricity, and second linear electric motor is linear motion along the second guide rail to beat printer head's vertical operating position and adjust, its regulating capability is strong, has improved the ability of printing.

Furthermore, the first transmission mechanism comprises a driving wheel, a belt and a driven wheel, the driving wheel is fixed on an output shaft of the stepping motor, the driven wheel is fixed at the outer end of the middle shaft and is in transmission connection with the driving wheel through the belt, the output shaft of the stepping motor drives the driving wheel to rotate, the driving wheel and the driven wheel rotate through the belt, the driven wheel drives the middle shaft to rotate, and the stepping motor can be installed at a low position through transmission, so that the stepping motor is convenient to maintain.

Furthermore, the driving wheel and the driven wheel are both V-shaped belt wheels, and the belt is a V-shaped belt, so that the transmission stability is ensured.

Further, actuating mechanism includes lead screw and drive nut, and the lead screw has two sets ofly, and symmetrical rotation installs the side at the feeder hopper around two sets of lead screws, drive nut and lead screw threaded connection, the one end and the drive nut fixed connection of apron, lead screw and drive nut screw-thread transmission, drive nut drive the apron and remove along the lead screw to expose the feed inlet of feeder hopper, its apron is opened conveniently, is convenient for carry out reinforced work.

Furthermore, second drive mechanism includes driving gear, chain and driven gear, and the driving gear is fixed on servo motor's output shaft, driven gear fixes the tip at the lead screw, and driven gear passes through the chain to be connected with the driving gear transmission, and servo motor's output shaft drives the driving gear and rotates, and the driving gear passes through chain and driven gear transmission, and driven gear drives the lead screw and rotates, has guaranteed two sets of lead screw pivoted synchronism through the transmission.

Further, slide mechanism includes spout and slide rail, and the spout is seted up on the feeder hopper, the slide rail is fixed in the bottom of apron, and slide rail sliding connection is in the inboard of spout, and the apron drives the slide rail and slides along the spout at the removal in-process, has guaranteed the stability that the apron opened and shut.

Further, still include the motor shock pad, the motor shock pad has two sets ofly, and two sets of motor shock pads correspond and paste in the junction of step motor and 3D printer casing and the junction of servo motor and feeder hopper, thereby the motor shock pad weakens step motor and the mechanical shock that servo motor produced through elastic deformation to weaken step motor and servo motor's noise at work.

Further, still include the observation window, the side at a pay-off section of thick bamboo is installed to the observation window, observes the transport condition of the inside material body of a pay-off section of thick bamboo through the observation window, has guaranteed the rationality of design.

Compared with the prior art, the invention has the beneficial effects that: this 3D is consumptive material preliminary treatment mechanism for printer has following benefit:

1. the feeding device comprises a feeding hopper, a feeding barrel, a stepping motor, a belt, a driving wheel, a driven wheel, a middle shaft, a spiral blade, a screw feeding mode, a feeding hopper, a belt, a screw feeding mode, a screw pressing mode, a feeding mechanism, a screw feeding mechanism and a screw pressing mechanism.

2. The feeding device comprises a feeding hopper, a feeding tube, a heating fin, a heating tube, a feeding pipe, a heating tube, a heating coil.

3. The first linear motor moves linearly along the first guide rail, so that the transverse working position of the 3D printing head is adjusted, the second linear motor moves linearly along the second guide rail, so that the longitudinal working position of the 3D printing head is adjusted, the adjusting capacity of the adjusting device is high, and the printing capacity is improved.

4. Servo motor's output shaft drives the driving gear and rotates, and the driving gear passes through chain and driven gear transmission, and driven gear drives the lead screw and rotates, lead screw and transmission nut screw drive, and transmission nut drives the apron and removes along the lead screw to expose the feed inlet of feeder hopper, the apron drives the slide rail at the removal in-process and slides along the spout, and its apron is opened conveniently, is convenient for carry out reinforced work.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a first cross-sectional view of the structure of the present invention;

FIG. 3 is an enlarged view of the structure of the present invention at A;

FIG. 4 is a second cross-sectional view of the inventive structure.

In the figure: 13D printer shell, 2 motor shock pad, 3 stepping motor, 4 first transmission mechanism, 41 driving wheel, 42 belt, 43 driven wheel, 5 second transmission mechanism, 51 driving gear, 52 chain, 53 driven gear, 6 transverse adjustment mechanism, 61 first linear motor, 62 first guide rail, 7 longitudinal adjustment mechanism, 71 second guide rail, 72 second linear motor, 8 sliding mechanism, 81 sliding chute, 82 sliding rail, 9 driving mechanism, 91 screw rod, 92 transmission nut, 10 cover plate, 11 feed hopper, 12 feed cylinder, 13 servo motor, 14 observation window, 15 electric glass door, 16 middle shaft, 17 helical blade, 18 feed pipe, 193D printing head, 20 electromagnetic heater, 21 heating cylinder, 22 heat conduction fin, 23 first groove, 24 second groove, 25 foot pad, 26 spring, 27 movable rod, 28 limiting block, 29 limiting groove, 30 connecting lug.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the consumable pretreatment mechanism for the 3D printer comprises a 3D printer shell 1, a first groove 23, a second groove 24, a spring 26, a transverse adjusting mechanism 6, a 3D printing head 19, a feeding barrel 12, a stepping motor 3, a feeding hopper 11 and a servo motor 13;

3D prints casing 1: the bottom of the side surface is fixed with a connecting lug 30, the inner side of the connecting lug 30 is connected with a movable rod 27 in a vertical sliding manner, the top end of the movable rod 27 is fixed with a limiting block 28, the bottom end of the movable rod 27 is fixed with a foot pad 25, the connecting lug 30 is provided with a limiting groove 29, and the limiting block 28 and the limiting groove 29 are arranged in a vertical corresponding manner;

first groove 23: the bottom of the connecting lug 30 is provided with a coaxial line with the movable rod 27;

second groove 24: the movable rod 27 is arranged on the top of the foot pad 25 and is coaxial with the movable rod;

spring 26: sleeved on the movable rod 27, one end of the spring 26 extends into the first groove 23, and the other end of the spring 26 extends into the second groove 24;

the 3D printing machine shell 1 is subjected to undesirable vibration and is transmitted to the connecting lug 30, the connecting lug 30 forces the spring 26 to generate elastic deformation, at the moment, the movable rod 27 and the connecting lug 30 slide relatively, the limiting block 28 is separated from the limiting groove 29, vibration energy is weakened through the elastic deformation of the spring 26, adverse effects of the undesirable vibration on printing work are avoided, and the normal operation of the printing work is ensured;

the first groove 23 and the second groove 24 are used for avoiding the lateral deviation of the spring 26, so that the service life of the spring 26 is ensured;

the transverse adjusting mechanism 6: the adjusting mechanism is arranged on the inner side surface of the 3D printer shell 1, and a longitudinal adjusting mechanism 7 is arranged on the adjusting part of the transverse adjusting mechanism 6;

3D print head 19: the heating device is assembled on the adjusting part of the longitudinal adjusting mechanism 7, the top of the 3D printing head 19 is fixedly communicated with a heating cylinder 21, heat conducting fins 22 are uniformly fixed on the inner side of the heating cylinder 21, and an electromagnetic heater 20 is installed on the outer side of the heating cylinder 21;

a feeding cylinder 12: the feeding device is fixed at the top of the 3D printing machine shell 1 and is communicated with the heating cylinder 21 through a feeding pipe 18, the inner side of the feeding cylinder 12 is rotatably connected with a middle shaft 16, and the side surface of the middle shaft 16 is fixed with a helical blade 17;

the middle shaft 16 drives the helical blades 17 to rotate so as to convey the material body, and a helical feeding mode is adopted, so that the defect that a piston type pressurization mode cannot continuously feed the material is overcome, and the production efficiency is improved;

a stepping motor 3: the output shaft of the stepping motor 3 is in transmission connection with the end part of the middle shaft 16 through a first transmission mechanism 4;

feed hopper 11: the feeding device is communicated and fixed on a feeding barrel 12, a driving mechanism 9 is installed at the position of a feeding hole of a feeding hopper 11, a cover plate 10 is fixed on the movable part of the driving mechanism 9, and the cover plate 10 is connected with the feeding hopper 11 in a sliding mode through a sliding mechanism 8;

the feeding device comprises a feeding hopper 11, a feeding barrel 12, a material body, a feeding pipe 18, a heating barrel 21, an electromagnetic heater 20, a heat conduction fin 22, a resistor, a heating barrel 21, a heating tube 21, a heating coil 22, a heating coil 21, a heating coil 22, a heating coil, a;

the servo motor 13: the output shaft of the servo motor 13 is in transmission connection with the rotating end part of the driving mechanism 9 through the second transmission mechanism 5;

the automatic printing machine further comprises an electric glass door 15, wherein the electric glass door 15 is installed on the front side of the 3D printing machine shell 1, and the input ends of the electric glass door 15, the servo motor 13, the stepping motor 3 and the electromagnetic heater 20 are electrically connected with the output end of an external controller.

After printing is finished, the electric glass door 15 is opened, and then the printed product can be taken out.

The transverse adjusting mechanism 6 comprises a first linear motor 61 and a first guide rail 62, the first guide rail 62 is fixed on the inner side surface of the 3D printing machine shell 1, the first linear motor 61 is assembled on the first guide rail 62, the input end of the first linear motor 61 is electrically connected with the output end of an external controller, and the first linear motor 61 moves linearly along the first guide rail 62, so that the transverse working position of the 3D printing head 19 is adjusted, the adjusting capability is strong, and the printing capability is improved.

The longitudinal adjusting mechanism 7 comprises a second guide rail 71 and a second linear motor 72, the end of the second guide rail 71 is fixedly connected with the first linear motor 61, the second linear motor 72 is assembled on the second guide rail 71, the 3D printing head 19 is assembled on the side surface of the second linear motor 72, the input end of the second linear motor 72 is electrically connected with the output end of an external controller, and the second linear motor 72 linearly moves along the second guide rail 71, so that the longitudinal working position of the 3D printing head 19 is adjusted, the adjusting capability is strong, and the printing capability is improved.

The first transmission mechanism 4 comprises a driving wheel 41, a belt 42 and a driven wheel 43, the driving wheel 41 is fixed on an output shaft of the stepping motor 3, the driven wheel 43 is fixed at the outer end part of the middle shaft 16, the driven wheel 43 is in transmission connection with the driving wheel 41 through the belt 42, the output shaft of the stepping motor 3 drives the driving wheel 41 to rotate, the driving wheel 41 rotates with the driven wheel 43 through the belt 42, the driven wheel 43 drives the middle shaft 16 to rotate, and the stepping motor 3 can be installed at a low position through transmission, so that the stepping motor 3 can be maintained conveniently.

The driving wheel 41 and the driven wheel 43 are both V-shaped belt wheels, and the belt 42 is a V-shaped belt, so that the transmission stability is ensured.

Actuating mechanism 9 includes lead screw 91 and drive nut 92, lead screw 91 has two sets ofly, two sets of lead screw 91 longitudinal symmetry rotate and install the side at feeder hopper 11, drive nut 92 and lead screw 91 threaded connection, the one end and the drive nut 92 fixed connection of apron 10, lead screw 91 and the drive nut 92 screw-thread transmission, drive nut 92 drives apron 10 and removes along lead screw 91 to expose the feed inlet of feeder hopper 11, its apron 10 is opened conveniently, be convenient for carry out reinforced work.

The second transmission mechanism 5 comprises a driving gear 51, a chain 52 and a driven gear 53, the driving gear 51 is fixed on an output shaft of the servo motor 13, the driven gear 53 is fixed at the end of the screw rod 91, the driven gear 53 is in transmission connection with the driving gear 51 through the chain 52, the output shaft of the servo motor 13 drives the driving gear 51 to rotate, the driving gear 51 is in transmission with the driven gear 53 through the chain 52, the driven gear 53 drives the screw rod 91 to rotate, and the synchronism of the rotation of the two screw rods 91 is ensured through transmission.

Slide mechanism 8 includes spout 81 and slide rail 82, and spout 81 is seted up on feeder hopper 11, and slide rail 82 fixes in the bottom of apron 10, and slide rail 82 sliding connection is in the inboard of spout 81, and apron 10 drives slide rail 82 and slides along spout 81 at the removal in-process, has guaranteed the stability that apron 10 opened and shut.

Further, still include motor shock pad 2, motor shock pad 2 has two sets ofly, and two sets of motor shock pads 2 correspond and paste in the junction of step motor 3 and 3D printer casing 1 and the junction of servo motor 13 and feeder hopper 11, thereby motor shock pad 2 weakens the mechanical shock that step motor 3 and servo motor 13 produced through elastic deformation to weaken step motor 3 and servo motor 13's noise at work.

Further, the feeding device also comprises an observation window 14, wherein the observation window 14 is arranged on the side surface of the feeding barrel 12, and the conveying condition of the material body in the feeding barrel 12 is observed through the observation window 14, so that the reasonability of design is guaranteed.

When in use: bad vibration that 3D printer casing 1 received is transmitted to engaging lug 30 on, and engaging lug 30 forces spring 26 to take place elastic deformation, and at this moment, relative slip takes place for loop bar 27 and engaging lug 30, and stopper 28 is deviate from spacing groove 29, weakens the vibration energy through the elastic deformation of spring 26.

The output shaft of the servo motor 13 drives the driving gear 51 to rotate, the driving gear 51 is in transmission with the driven gear 53 through the chain 52, the driven gear 53 drives the screw rod 91 to rotate, the screw rod 91 is in threaded transmission with the transmission nut 92, the transmission nut 92 drives the cover plate 10 to move along the screw rod 91, so that the feeding port of the feeding hopper 11 is exposed, and the cover plate 10 drives the sliding rail 82 to slide along the sliding groove 81 in the moving process.

The feeding device comprises a feeding hopper 11 and a feeding barrel 12, an output shaft of a stepping motor 3 drives a driving wheel 41 to rotate, the driving wheel 41 rotates with a driven wheel 43 through a belt 42, the driven wheel 43 drives a center shaft 16 to rotate oppositely, the center shaft 16 drives a helical blade 17 to rotate so as to convey a material body, the material body enters a heating barrel 21 through a feeding pipe 18, the material body in the heating barrel 21 is heated through an electromagnetic heater 20, and heat conduction fins 22 are used for improving the heat exchange efficiency between the heating barrel 21 and the material body.

After heating is complete, the body is ejected by the 3D print head 19.

After printing is finished, the electric glass door 15 is opened, and then the printed product can be taken out.

The first linear motor 61 linearly moves along the first guide rail 62 to adjust the lateral operation position of the 3D printing head 19, and the second linear motor 72 linearly moves along the second guide rail 71 to adjust the longitudinal operation position of the 3D printing head 19.

The motor cushion 2 is elastically deformed to attenuate mechanical vibration generated by the stepping motor 3 and the servo motor 13.

The feeding condition of the material body in the feeding barrel 12 is observed through the observation window 14.

It is worth noting that: the first linear motor 61, the second linear motor 72, the electric glass door 15, the servo motor 13, the stepping motor 3 and the electromagnetic heater 20 are all configured according to the actual application scene, and the feeding pipe 18 and the 3D printing head 19 are the feeding pipe and the 3D printing head in the patent with the publication number CN 206633422U.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.