3D printing nozzle

Abstract

The utility model provides a 3D printing nozzle, and belongs to the technical field of 3D printing nozzles. The 3D printing spray head comprises a main body, a heat dissipation mechanism and a feeding mechanism, the main body comprises a first shell, a second shell is installed at the bottom end of the first shell, a third shell is installed at the bottom end of the second shell, a feeding funnel is installed on the outer side, close to the upper end, of the third shell, and the feeding funnel communicates with the third shell; a plurality of first heating rods are embedded in the inner wall of the feeding funnel, a stirring shaft is rotationally connected into the third shell, the stirring shaft is sleeved with stirring blades, a throat pipe is installed at the bottom end of the third shell, the throat pipe is sleeved with an electromagnetic valve, a hot melting spray head is installed at a discharging port of the electromagnetic valve, and a nozzle is installed at the bottom end of the hot melting spray head. According to the 3D printing nozzle, the printing speed can be effectively increased, the polymer fluidity of the 3D printing nozzle is improved, and the 3D printing nozzle has high practical value.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing nozzle technical field, specifically, relate to a kind of 3D printing nozzle. BACKGROUND

[0002] 3D printing is a kind of rapid prototyping technology, it is a kind of based on digital model file, using powdered metal or plastic and other adhesion materials, by layer-by-layer printing to construct object technology, 3D printing is usually realized using digital technology material printer. It is usually used in mold manufacturing, industrial design and other fields for manufacturing model, then gradually for some product direct manufacturing, there are parts printed using this technology. The technology is applied in jewelry, footwear, industrial design, architecture, engineering and construction, automobile, aerospace, dental and medical industry, education, geographic information system, civil engineering, gun and other fields. 3D printer generally has nozzle (also called hot head), hot bed, screw rod, stepper motor and control board and other components.

[0003] Based on the above, the present inventor found that there are the following problems: the 3D printing nozzle on the market now, the wire material is made of polymer and short fiber mixture, in ordinary heating nozzle, there will be the problems of insufficient heating, poor fluidity, plug. Using granular material mixed with short fiber, extruded by screw machine, multi-stage heating, can solve the problems of fluidity and flux, but the extrusion flow of granular material is too large, rough processing, not easy to create state vertical structure.

[0004] Therefore, in view of the above, the existing structure and defects are improved, and a 3D printing nozzle is provided, so as to achieve the purpose of having more practical value. INVENTION CONTENTS

[0005] In order to solve the above technical problems, the utility model embodiment provides a kind of 3D printing nozzle, specifically by following technical scheme realizes:

[0006] A kind of 3D printing nozzle, including main body, heat dissipation mechanism and feeding mechanism, the main body includes first shell, the bottom of the first shell is installed with second shell, the bottom of the second shell is installed with third shell, the outer side of the third shell is installed with feed hopper near upper end, the feed hopper is communicated with third shell, and the inner wall of the feed hopper is embedded with a plurality of first heating rods, the inside of the third shell is rotatably connected with stirring shaft, the outer portion of the stirring shaft is provided with stirring blade, the bottom of the third shell is installed with throat pipe, the outer portion of the throat pipe is provided with solenoid valve, the discharge port of the solenoid valve is installed with hot melt nozzle, the bottom of the hot melt nozzle is installed with nozzle, and the inner wall of the hot melt nozzle is embedded with a plurality of second heating rods.

[0007] Further, the third shell is provided with a fixed plate on each of the two sides outside near the bottom of the feeding funnel, the two ends of the stirring shaft extend through the third shell to the inside of the fixed plate and are rotatably connected to the fixed plate through bearings, and the outside of one of the fixed plates is provided with a first motor, and the output end of the first motor is drivingly connected to the stirring shaft through a shaft coupling.

[0008] The above further scheme has the beneficial effect that the two ends of the stirring shaft are rotatably connected to the fixed plates through bearings, thereby ensuring the stability of the stirring shaft and the stirring blades inside the third shell, the first motor is provided, and the output end of the first motor is connected to one end of the stirring shaft through a shaft coupling, when the first motor is started, the output end of the first motor rotates to make the stirring shaft and the stirring blades rotate under the action of the shaft coupling, thereby further achieving the stirring purpose.

[0009] Further, the inside of the second shell is provided with a heating cavity, the upper end and the bottom end of the heating cavity are provided with heating plates, and the inside of the second shell is provided with heating wires.

[0010] The above further scheme has the beneficial effect that the heating cavity is arranged inside the second shell, when the wire rod enters the inside of the second shell, the heating wires and the heating plates work to heat and melt the wire rod, at the same time, the second shell is provided with a heat preservation and insulation layer outside, and the second shell is made of heat conductive material, thereby further improving the heating efficiency of the wire rod inside the second shell, and avoiding the heat transfer from the inside of the second shell to the outside of the second shell.

[0011] Further, the heat dissipation mechanism comprises a wind box and a plurality of heat dissipation fins, the wind box is arranged on one side of the outer wall of the first shell, a heat dissipation fan is embedded in the inside of one side of the wind box, a plurality of heat dissipation fins are arranged outside the first shell, a plurality of air pipes are arranged between the plurality of heat dissipation fins, and one end of each of the plurality of air pipes is in communication with the wind box.

[0012] The above further scheme has the beneficial effect that the heat dissipation fins are arranged outside the first shell, thereby dissipating heat from the first shell on the second shell, at the same time, the air pipes are arranged between the heat dissipation fins, and the air pipes are in communication with the wind box, when the heat dissipation fan is started, the outside air enters the inside of the wind box and flows through the air pipes, thereby achieving the purpose of taking away the heat on the heat dissipation fins, and dissipating heat from the first shell, at the same time, the other end of the air pipe is not in communication with the wind box, so that the air in the inside of the air pipe is discharged from the air pipe to the outside of the wind box.

[0013] Further, the feeding mechanism comprises a mounting seat, which is arranged at the upper end of the first shell, and a feeding box is arranged at the upper end of the mounting seat, a wire is arranged at the inner center of the feeding box, and a pair of first rotating shafts are rotatably connected to the inner part of the feeding box, and a feeding roller is arranged outside the pair of first rotating shafts.

[0014] The beneficial effect of the above further scheme is that by arranging a pair of first rotating shafts and a feeding roller outside the first rotating shafts, the wire is arranged between the pair of feeding rollers, and the outer part of the wire is attached to the outer part of the feeding roller, and when the pair of feeding rollers rotate in opposite directions, the purpose of conveying the wire is achieved.

[0015] Further, a power box is arranged at one side of the outer part of the feeding box, one end of the pair of first rotating shafts extends to the inner part of the power box, and a first gear is arranged outside one end of the first rotating shaft near the power box.

[0016] Further, a second rotating shaft is rotatably connected to the inner center of the power box near the first gear, a second gear is arranged outside the second rotating shaft, and the second gear is meshed with the first gear.

[0017] The beneficial effect of the above further scheme is that by arranging a first gear outside one end of the first rotating shaft near the inner part of the power box, and since the first gear is meshed with the second gear, when the first gear rotates, the second gear will also rotate.

[0018] Further, a synchronous wheel is arranged outside one end of the second rotating shaft and the other first rotating shaft, and a synchronous belt is arranged between the pair of synchronous wheels.

[0019] The beneficial effect of the above further scheme is that by arranging a synchronous wheel and a synchronous belt, when the second rotating shaft rotates, the other first rotating shaft with one end outside which is not arranged with a first gear will synchronously rotate with the second rotating shaft under the transmission of the synchronous wheel and the synchronous belt, thereby achieving the purpose of the pair of first rotating shafts rotating in opposite directions.

[0020] Further, a second motor is arranged at one side of the outer part of the power box away from the feeding box, and the output end of the second motor is in transmission connection with one of the first rotating shafts through a shaft coupling.

[0021] The beneficial effect of the above further scheme is that by arranging a second motor, when the second motor is started, the output end of the second motor will rotate, and the first rotating shaft with one end outside which is arranged with a first gear will rotate under the action of the shaft coupling.

[0022] The 3D printing nozzle has the advantages that the short fiber feeding funnel is installed on the outer side of the third shell body close to the upper end, so that the inside of the third shell body is conveniently fed with short fibers, the inside of the short fiber feeding funnel is provided with scale lines, so that the short fiber feeding funnel has a metering effect, when the first heating plate works, the short fiber raw material is heated to melt and enter the inside of the third shell body, the feeding mechanism is used to feed the wire rod required for printing into the inside of the second shell body, and the wire rod is melted into the inside of the third shell body under the action of the heating wire and the heating plate, the first motor is used, when the first motor is started, the output end of the motor rotates to make the stirring shaft and the stirring blade rotate under the action of the shaft coupling, the purpose of stirring and mixing the melted wire rod and the short fiber material is further achieved, the user can conveniently formulate the mixing ratio of the short fiber and the wire rod according to needs, the short fiber raw material and the wire rod are heated separately, and are stirred and mixed in the inside of the third shell body close to the hot melting nozzle, so that the printing efficiency is not affected due to insufficient mixing of the short fiber and the wire rod, the mixed wire rod and short fiber material enter the inside of the hot melting nozzle through the electromagnetic valve, the wire rod and the short fiber which have been mixed are continuously heated by the second heating rod in the inside of the hot melting nozzle, and are sprayed out of the nozzle, so that the printing purpose is achieved, and the outside of the short fiber feeding funnel, the third shell body, the hot melting nozzle and the nozzle is provided with a heat preservation and heat insulation layer. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0024] Figure 1 A three-dimensional structure diagram of the 3D printing nozzle is provided for the present application Figure 1 ;

[0025] Figure 2 A three-dimensional structure diagram of the 3D printing nozzle is provided for the present application Figure 2 ;

[0026] Figure 3 An exploded three-dimensional sectional structure diagram of the feeding mechanism of the 3D printing nozzle is provided for the present application

[0027] Figure 4The utility model provides an explosion three -dimensional structure schematic diagram of heat abstractor of 3D printing nozzle.

[0028] Figure 5 The utility model provides a partial section of schematic diagram of second casing and third casing of 3D printing nozzle.

[0029] In the drawing: 100, main body;1001, first casing;1002, second casing;1003, heating plate;1004, heating wire;1005, third casing;1006, feed hopper;1007, first heating rod;1008, stirring shaft;1009, stirring vane;1010, fixed plate;1011, first motor;1012, electromagnetic valve;1013, hot melt nozzle;1014, second heating rod;1015, nozzle;200, heat abstractor;2001, bellow;2002, heat dissipation fan;2003, heat dissipation fin;2004, air pipe;300, feeding mechanism;3001, mounting seat;3002, feeding box;3003, wire;3004, first rotation axis;3005, feeding roller;3006, power box;3007, first gear;3008, second rotation axis;3009, second gear;3010, synchronous wheel;3011, second motor. DETAILED DESCRIPTION

[0030] In order to make the utility model embodiment purposes, technical scheme and advantage more clearly, below will combine the drawing in the utility model embodiment, to the technical scheme in the utility model embodiment clear, complete description, obviously, the described embodiment is the utility model part embodiment, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments that the ordinary skill in the art obtains without making creative labor are within the scope of the utility model protection.

[0031] Therefore, the following detailed description of the embodiment of the utility model provided in the drawing is not intended to limit the scope of the claimed utility model, but only represents the selected embodiment of the utility model. Based on the embodiment in the utility model, all other embodiments that the ordinary skill in the art obtains without making creative labor are within the scope of the utility model protection.

[0032] Example one

[0033] The utility model provides the following technical scheme: Figures 1-5As shown, a 3D printing nozzle includes a main body 100, a heat dissipation mechanism 200 and a feeding mechanism 300. The main body 100 includes a first shell 1001, the bottom end of the first shell 1001 is provided with a second shell 1002, the bottom end of the second shell 1002 is provided with a third shell 1005, the outer side of the third shell 1005 close to the upper end is provided with a feeding hopper 1006, the feeding hopper 1006 is communicated with the third shell 1005, and the inner wall of the feeding hopper 1006 is embedded with a plurality of first heating rods 1007, the inside of the third shell 1005 is rotatably connected with a stirring shaft 1008, the outer side of the stirring shaft 1008 is provided with a stirring blade 1009, the bottom end of the third shell 1005 is provided with a throat pipe, the outer side of the throat pipe is provided with a solenoid valve 1012, the discharge port of the solenoid valve 1012 is provided with a hot melt nozzle 1013, the bottom end of the hot melt nozzle 1013 is provided with a nozzle 1015, and the inner wall of the hot melt nozzle 1013 is embedded with a plurality of second heating rods 1014. By installing the feeding hopper 1006, it is convenient to feed the short fiber into the third shell 1005. By embedding a plurality of first heating rods 1007 in the inner wall of the feeding hopper 1006, when the first heating rods 1007 work, the short fiber raw material is heated to melt into the inside of the third shell 1005. By arranging the stirring shaft 1008 and the stirring blade 1009, when the stirring shaft 1008 rotates, the molten wire 3003 and the short fiber material are stirred and mixed.

[0034] Example two

[0035] Referring to Figures 1-5 As shown, the third shell 1005 is provided with a fixed plate 1010 on the outer side of both sides close to the lower side of the feeding hopper 1006, the both ends of the stirring shaft 1008 extend to the inside of the fixed plate 1010 through the third shell 1005 and are rotatably connected with the fixed plate 1010 through a bearing, one of the outer sides of the fixed plate 1010 is provided with a first motor 1011, the output end of the first motor 1011 is drivingly connected with the stirring shaft 1008 through a shaft coupling, the inside of the second shell 1002 is provided with a heating cavity, the upper end and the bottom end of the heating cavity are provided with a heating plate 1003, and the inside of the second shell 1002 is provided with a heating wire 1004. By arranging the first motor 1011, when the first motor 1011 is started, the output end of the first motor 1011 rotates to make the stirring shaft 1008 and the stirring blade 1009 rotate under the action of the shaft coupling, so as to further realize the stirring purpose. By arranging the heating cavity in the inside of the second shell 1002, when the wire 3003 enters the inside of the second shell 1002, the heating wire 1004 and the heating plate 1003 work to heat and melt the wire 3003.

[0036] Example three

[0037] Referring to Figures 1-5As shown, the heat dissipation mechanism 200 includes a wind box 2001 and a plurality of heat dissipation fins 2003, the wind box 2001 is arranged on one side of the outer wall of the first shell 1001, one side of the wind box 2001 is embedded with a heat dissipation fan 2002, a plurality of heat dissipation fins 2003 are arranged on the outside of the first shell 1001, and a plurality of air pipes 2004 are arranged between the plurality of heat dissipation fins 2003, one end of the plurality of air pipes 2004 is in communication with the wind box 2001, the feeding mechanism 300 includes a mounting seat 3001, the mounting seat 3001 is arranged on the upper end of the first shell 1001, and the upper end of the mounting seat 3001 is provided with a feeding box 3002, a wire 3003 is arranged at the center of the inside of the feeding box 3002, and a pair of first rotating shafts 3004 are rotatably connected in the inside of the feeding box 3002, a feeding roller 3005 is sleeved on the outside of the pair of first rotating shafts 3004, a power box 3006 is arranged on one side of the outside of the feeding box 3002, one end of the pair of first rotating shafts 3004 extends to the inside of the power box 3006 through the feeding box 3002, and a first gear 3007 is sleeved on the outside of one end of one of the first rotating shafts 3004 close to the power box 3006, a second rotating shaft 3008 is rotatably connected at the center of the inside of the power box 3006 close to the first gear 3007, a second gear 3009 is sleeved on the outside of the second rotating shaft 3008, the second gear 3009 is meshed with the first gear 3007, a synchronous wheel 3010 is sleeved on the outside of one end of the other first rotating shaft 3004 and the second rotating shaft 3008, a synchronous belt is wound between the pair of synchronous wheels 3010, a second motor 3011 is arranged on one side of the outside of the power box 3006 away from the feeding box 3002, and the output end of the second motor 3011 is in transmission connection with one of the first rotating shafts 3004 through a shaft coupling. By arranging the heat dissipation fins 2003, the first shell 1001 on the second shell 1002 is cooled, the air pipes 2004 are inserted, and the air pipes 2004 are in communication with the wind box 2001. When the heat dissipation fan 2002 is started, the outside air enters the inside of the wind box 2001 and flows through the air pipes 2004, so as to achieve the purpose of taking away the heat on the heat dissipation fins 2003. At the same time, the other end of the air pipe 2004 not in communication with the wind box 2001 will make the air in the inside of the air pipe 2004 through the wind box 2001 flow out to the outside of the wind box 2001. By arranging the second motor 3011, when the second motor 3011 is started, the output end of the second motor 3011 rotates, and under the action of the shaft coupling, one end of the first rotating shaft 3004 sleeved with the first gear 3007 rotates, the first gear 3007, the first rotating shaft 3004 and the feeding roller 3005 outside the first rotating shaft 3004 rotate, and at the same time, the first gear 3007 drives the second gear 3009 to rotate, so that the second rotating shaft 3008 rotates,And in the transmission effect of synchronous wheel 3010 and synchronous belt between the other one end of the first rotating shaft 3004 which is not externally sleeved with the first gear 3007 and the second rotating shaft 3008 synchronous rotation, thereby realizing the purpose of a pair of first rotating shaft 3004 turning in opposite directions, so as to transport the wire 3003 between a pair of feeding rollers 3005.

[0038] Specifically, the working principle of the 3D printing nozzle is as follows: in use, first, the wire 3003 is inserted into the inside of the feeding box 3002, the second motor 3011 is started, the output end of the second motor 3011 is rotated, and under the action of the shaft coupling, one end of the first rotating shaft 3004 externally sleeved with the first gear 3007 is rotated, the first gear 3007, the first rotating shaft 3004 and the feeding roller 3005 outside it are rotated, at the same time, the first gear 3007 drives the second gear 3009 to rotate, the second rotating shaft 3008 is rotated, and under the transmission effect of the synchronous wheel 3010 and the synchronous belt, the other one end of the first rotating shaft 3004 which is not externally sleeved with the first gear 3007 and the second rotating shaft 3008 are synchronous rotation, thereby realizing the purpose of a pair of first rotating shaft 3004 turning in opposite directions, so as to transport the wire 3003 between a pair of feeding rollers 3005, the wire 3003 is transported to the inside of the second shell 1002, the external air enters the inside of the wind box 2001 and flows through the air pipe 2004, thereby achieving the purpose of taking away the heat on the heat dissipation fin 2003, the first shell is cooled 1001, when the wire 3003 enters the inside of the second shell 1002, the heating wire 1004 and the heating plate 1003 work to heat and melt the wire 3003, at the same time, the cooling fan 2002 is started, at this time, the short fiber raw material is placed in the inside of the feeding hopper 1006, the first heating rod 1007 embedded in the inner wall of the feeding hopper 1006 works to heat and melt the short fiber raw material into the inside of the third shell 1005, when the first motor 1011 is started, the output end of the first motor 1011 rotates, thereby making the stirring shaft 1008 and the stirring blade 1009 rotate under the action of the shaft coupling, realizing the purpose of stirring and mixing the melted wire 3003 and the short fiber material, the mixed wire 3003 and short fiber material enter the inside of the hot melt nozzle 1013 through the electromagnetic valve 1012, the second heating rod 1014 in the hot melt nozzle 1013 continuously heats the wire 3003 and the short fiber which have been mixed, until they are sprayed out of the nozzle 1015, realizing the purpose of printing.

[0039] It should be noted that the specific model specifications of the 3D printing nozzle, the heating plate 1003, the heating wire 1004, the first heating rod 1007, the first motor 1011, the electromagnetic valve 1012, the heat dissipation fan 2002, the heat dissipation fin 2003 and the second motor 3011 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.

[0040] The power supply and principle of the 3D printing nozzle, the heating plate 1003, the heating wire 1004, the first heating rod 1007, the first motor 1011, the electromagnetic valve 1012, the heat dissipation fan 2002, the heat dissipation fin 2003 and the second motor 3011 are clear to those skilled in the art, and will not be described in detail here.

[0041] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A 3D printing nozzle, characterized in that, The utility model relates to a kind of hot melt adhesive production equipment, including main body (100), heat dissipation mechanism (200) and feeding mechanism (300), the main body (100) includes first shell (1001), the bottom end of the first shell (1001) is installed with second shell (1002), the bottom end of the second shell (1002) is installed with third shell (1005), the third shell (1005) is installed with feed hopper (1006) on the outer side near upper end, the feed hopper (1006) is communicated with third shell (1005), and the inner wall of the feed hopper (1006) is embedded with a plurality of first heating rod (1007), the inside of the third shell (1005) is rotatably connected with stirring shaft (1008), the outside of the stirring shaft (1008) is sleeved with stirring blade (1009), the bottom end of the third shell (1005) is installed with throat pipe, the outside of the throat pipe is sleeved with solenoid valve (1012), the discharge port of the solenoid valve (1012) is installed with hot melt spray head (1013), the bottom end of the hot melt spray head (1013) is installed with nozzle (1015), and the inner wall of the hot melt spray head (1013) is embedded with a plurality of second heating rod (1014).

2. The 3D printing nozzle of claim 1, wherein, The third shell (1005) is installed with fixed plate (1010) on the outer side near the lower side of feed hopper (1006), both ends of the stirring shaft (1008) extend to the inside of fixed plate (1010) and are rotatably connected with fixed plate (1010) by bearing, and the outer side of one of fixed plate (1010) is installed with first motor (1011), and the output end of the first motor (1011) is drivingly connected with the stirring shaft (1008) by shaft coupling.

3. A 3D printing nozzle according to claim 2, wherein, The inside of the second shell (1002) is provided with heating cavity, the upper end and the bottom end of the heating cavity are installed with heating plate (1003), and the second shell (1002) is provided with heating wire (1004) in the heating cavity.

4. The 3D printing nozzle of claim 1, wherein, The heat dissipation mechanism (200) includes wind box (2001) and a plurality of heat dissipation fins (2003), the wind box (2001) is arranged on the outer wall of the first shell (1001), the wind box (2001) is embedded with heat dissipation fan (2002) on one side, a plurality of heat dissipation fins (2003) are arranged on the outside of the first shell (1001), and a plurality of wind pipes (2004) are inserted between a plurality of heat dissipation fins (2003), and one end of a plurality of wind pipes (2004) is communicated with wind box (2001).

5. The 3D printing nozzle of claim 1, wherein, The feeding mechanism (300) comprises a mounting base (3001) provided at the upper end of the first shell (1001), and a feeding box (3002) is mounted at the upper end of the mounting base (3001), a wire (3003) is inserted at the inner center of the feeding box (3002), and a pair of first rotating shafts (3004) are rotatably connected in the feeding box (3002), and a feeding roller (3005) is sleeved outside the pair of first rotating shafts (3004).

6. A 3D printing nozzle according to claim 5, wherein, A power box (3006) is mounted at one side outside the feeding box (3002), one end of the pair of first rotating shafts (3004) extends to the inside of the power box (3006) through the feeding box (3002), and the first rotating shaft (3004) is sleeved with a first gear (3007) outside one end close to the power box (3006).

7. A 3D printing nozzle according to claim 6, wherein, A second rotating shaft (3008) is rotatably connected at the inner center close to the first gear (3007) in the power box (3006), the second rotating shaft (3008) is sleeved with a second gear (3009) outside, and the second gear (3009) is meshed with the first gear (3007).

8. The 3D printing nozzle of claim 7, wherein, The second rotating shaft (3008) and the other first rotating shaft (3004) are sleeved with a synchronous wheel (3010) outside one end, and a synchronous belt is wound between the pair of synchronous wheels (3010).

9. The 3D printing nozzle of claim 8, wherein, A second motor (3011) is mounted at the outside of the power box (3006) away from the feeding box (3002), and the output end of the second motor (3011) is drivingly connected with one of the first rotating shafts (3004) through a shaft coupling.

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