CN114347461A - 3D printer convenient for cleaning spray head and using method thereof - Google Patents
3D printer convenient for cleaning spray head and using method thereof Download PDFInfo
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- CN114347461A CN114347461A CN202111650651.1A CN202111650651A CN114347461A CN 114347461 A CN114347461 A CN 114347461A CN 202111650651 A CN202111650651 A CN 202111650651A CN 114347461 A CN114347461 A CN 114347461A
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Abstract
The invention relates to the field of 3D printer nozzles, in particular to a 3D printer convenient for cleaning a nozzle and a using method thereof. This kind of 3D printer convenient to wash shower nozzle, cooperation through drive gear and internal gear circle, drive heating sleeve and helical blade and rotate, thereby make the interior negative pressure that forms of backflow sleeve, make the interior fused material of heating chamber get into the backflow sleeve through the backward flow hole in, thereby avoid the back of shutting down, the jam is condensed in the too much material cooling of heating chamber, when using again, heating sleeve 1103 heats the material, the helical blade of reversal promotes the material to flow backward to the backward flow hole, the raw materials secondary heating that gets into the heating chamber, tip heating efficiency and quality have been improved, need not to wait for the lengthy heating pay-off of heating feeder, the effectual latency that has reduced mechanical operation, cooperation through second screw rod and spacing pipe, make and prevent stifled screwed pipe can the displacement downwards to the discharge opening shutoff.
Description
Technical Field
The invention relates to the field of 3D printer nozzles, in particular to a 3D printer convenient for cleaning a nozzle and a using method thereof.
Background
The 3D printing technology is with the three-dimensional design model of computer as the blue book, through software layering dispersion and numerical control forming system, utilize modes such as laser beam, hot melt nozzle to carry out the successive layer stack with special materials such as metal powder, ceramic powder, plastics, cell tissue and bond, final stack shaping, produce the entity product, present domestic 3D printer is mostly FDM melting stack shaping and prints, mainly melt into the filamentous material through the heating rod heating in its printing process, the shower nozzle moves along the orbit that the computer set for, the filamentous material that melts simultaneously is extruded from the shower nozzle, solidify rapidly after the material blowout, and bond with material on every side.
The following problems in the prior art are not well solved: 1. after the printing is finished, a large amount of molten printing raw materials are left in a nozzle of the existing 3D printer, and are solidified in the nozzle of the 3D printer along with the cooling of the temperature of the printer, so that the printing raw materials are not easy to melt again for use, and the next printing work is influenced; 2. when the printing is stopped, residual materials are easy to solidify, condense and accumulate at a discharge hole of a 3D printer nozzle, so that redundant working nodules are formed, the printing nozzle can be even blocked under severe conditions, and the printing nozzle is difficult to clean; 3. the material in the organism can be because reasons such as material melting is insufficient or printing consumables quality is poor lead to in the material after the melting, particle impurity can appear and block up the nozzle, influences normal print job, and traditional nozzle structure is complicated, when blocking up the trouble, needs the professional to dismantle the clearance, and inconvenient ordinary staff uses, reduces printing efficiency.
Disclosure of Invention
The invention aims to provide a 3D printer convenient for cleaning a spray head and a using method thereof, and aims to solve the problems that more printing raw materials are left in the spray head after printing is finished, the next use is influenced after curing, the spray head is blocked by the materials left in a discharge hole of the spray head and is difficult to process, impurities exist in the melted materials and are easy to block the spray head, and the existing spray head is difficult to disassemble in the prior art. In order to achieve the purpose, the invention provides the following technical scheme: A3D printer convenient for cleaning a spray head comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a protective box, the top of the protective box is fixedly connected with a heating feeding device, the top of the bottom plate is fixedly connected with three moving mechanisms, and the adjacent sides of the three moving mechanisms are movably connected with connecting blocks, the opposite sides of the three connecting blocks are fixedly connected with spray head connecting pipes, the top of the spray head connecting pipe is fixedly communicated with the heating feeding device through a material guide pipe, the lower part of the spray head connecting pipe is in threaded connection with an anti-blocking spray head mechanism through a threaded sleeve, a transmission gear is movably connected in the anti-blocking spray head mechanism, and the anti-blocking spray head mechanism is fixedly sleeved with a backflow mechanism, and the inner wall of the anti-blocking spray head mechanism is provided with a backflow hole penetrating to the inner side of the backflow mechanism, the sprayer connecting pipe is internally provided with a one-way valve, and the middle part of the top surface of the bottom plate is movably connected with an electric turntable.
Preferably, the moving mechanism comprises a base, the base is fixedly connected to the top of the bottom plate, the top of the base is fixedly connected with the bottom of the top plate through two sliding rods, the top of the top plate is fixedly connected with a first motor, the output end of the first motor penetrates through the top plate and is fixedly connected with the top of a first screw rod below the top plate, a sliding sleeve is sleeved on the first screw rod in a threaded mode, the sliding sleeve is movably sleeved on the two sliding rods, two connecting rods are movably connected to one side of the sliding sleeve, and the other ends of the two connecting rods are movably connected with one of the connecting blocks.
Preferably, the anti-blocking nozzle mechanism comprises a nozzle body, the nozzle body is in threaded connection with the inside of the threaded sleeve, the inside of the nozzle body is sequentially provided with a filter cavity, a mechanical cavity and a heating cavity from top to bottom, the bottom of the filter cavity is provided with a through hole penetrating through the top of the heating cavity, the filter cavity is movably sleeved with a filter cartridge, the top of the mechanical cavity is fixedly connected with a second motor, the output end of the second motor penetrates through the mechanical cavity and is fixedly connected with the top end of a second screw rod below the mechanical cavity, the second screw rod is in threaded sleeve connection with an anti-blocking screwed pipe, the anti-blocking screwed pipe is slidably sleeved with a limiting pipe, the top of the anti-blocking screwed pipe is fixedly connected with the top of the heating cavity, the output end of the second motor is fixedly sleeved with a rotating gear, the transmission gear is movably connected with the upper side and the lower side of the inner wall of the mechanical cavity and is meshed with the rotating gear, and one side of the transmission gear penetrates through the nozzle body and extends to the inner side of the backflow mechanism, the middle part of the bottom surface of the spray head body is provided with a discharge hole penetrating to the bottom of the heating cavity.
Preferably, the backward flow mechanism includes the backward flow sleeve pipe, and the fixed cover of backward flow sleeve pipe connects on the shower nozzle body, the upper portion activity overlap joint of backward flow sleeve pipe inner wall has the internal gear circle, and the meshing of the internal gear circle inboard and the drive gear outside, and the top fixedly connected with heating sleeve pipe of internal gear circle, and the fixed cover of going up of heating sleeve pipe has helical blade.
Preferably, the first screw rod is located in the middle between the two sliding rods, and the three moving mechanisms are radially and equidistantly arranged on the top of the bottom plate by taking a central axis of the electric turntable as an axis.
Preferably, the circular arc type is handled to the bottom of preventing stifled screwed pipe, and the diameter of preventing stifled screwed pipe cooperatees with the diameter of discharge opening, this internal fixed nestification of shower nozzle has the heater strip, and heats the conical row material slope that diameter from the top down reduced in proper order is seted up to the lower part of intracavity wall, the backward flow hole is located the low level on conical row material slope.
Preferably, the outer wall of the lower part of the spray head connecting pipe is provided with threads matched with the inner wall of the threaded sleeve, three connecting block shafts are radially and equidistantly arranged on the outer wall of the upper part of the spray head connecting pipe, and the bottom of the spray head connecting pipe is fixedly connected with an inserting pipe matched with the filter cartridge.
A use method of a 3D printer convenient for cleaning a spray head comprises the following steps:
s1, firstly, the direction of a model on the electric turntable can be flexibly adjusted through the rotary electric turntable, the three moving mechanisms respectively control the running states of the three first motors to adjust the heights of the three sliding sleeves on the first screw rod, so that the plane position and the horizontal height of the spray head connecting pipe can be flexibly adjusted through the three groups of connecting rods, the three moving mechanisms are separated from the running state without interference, the later-stage independent disassembly, maintenance and cleaning are facilitated, and the use is more convenient;
s2, the upper part of the anti-blocking spray head mechanism can be quickly butted with the spray head connecting pipe by rotating the threaded sleeve or the rotary spray head body, so that the subsequent independent maintenance and cleaning of the spray head body are facilitated, the structure is simple, and the practicability is high;
s3, conveying the preliminarily melted raw materials to a nozzle connecting pipe through a material guide pipe by a heating and feeding device, entering a filter cylinder through a one-way valve under pressure, filtering impurities in the raw materials, entering a heating cavity through a through hole, and finally flowing out through a discharge hole at the bottom of the heating cavity for use;
s4, after modeling is completed, a second motor is started to drive a rotating gear and a second screw to synchronously rotate, an anti-blocking screw pipe in threaded sleeve connection with the second screw is downwards displaced to penetrate into a discharge hole and extend to the bottom side of the discharge hole under the sliding limit of a limit pipe to block the discharge hole, so that excessive materials are prevented from overflowing and condensing, the discharge hole is prevented from being blocked, meanwhile, a transmission gear meshed with the rotating gear drives an inner gear ring to rotate, a heating sleeve and a spiral blade rotate along with the heating sleeve, negative pressure is formed in a backflow sleeve, molten materials in a heating cavity enter the backflow sleeve through the backflow hole, and accordingly excessive materials in the heating cavity are prevented from being cooled, condensed and blocked after shutdown;
s5, when the machine is started again for use, the nozzle body heats the body and the backflow sleeve simultaneously through the heating wire, so that the raw materials are molten, the second motor is started reversely, the raw materials flow back to the backflow hole through the spiral blade rotating reversely, and in the backflow process, the raw materials enter the heating cavity for secondary heating, so that the heating efficiency is improved, and meanwhile, the anti-blocking spiral pipe is jacked to remove the blockage of the discharge hole.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the heating sleeve and the helical blade are driven to rotate through the matching of the transmission gear and the internal gear ring, so that negative pressure is formed in the backflow sleeve, molten materials in the heating cavity enter the backflow sleeve through the backflow hole, excessive materials in the heating cavity are prevented from being cooled, condensed and blocked after the heating cavity is stopped, when the heating sleeve is used again, the materials are heated by the heating sleeve, the materials are pushed to flow back to the backflow hole by the reversed helical blade, the raw materials enter the heating cavity for secondary heating, the end heating efficiency and quality are improved, long heating feeding of the heating feeding device is not required, and the waiting time of mechanical operation is effectively shortened.
In the invention, the second screw rod is matched with the limiting pipe, so that the anti-blocking screw pipe can move downwards to penetrate into the discharge hole and extend to the bottom side of the discharge hole to block the discharge hole, the excessive materials are prevented from overflowing, condensing and solidifying to block the discharge hole, the anti-blocking screw pipe is jacked up when the anti-blocking screw pipe is needed to be used, the blocking of the discharge hole is removed, and the smoothness of the discharge hole can be recovered.
According to the invention, the filter cartridge is arranged, so that the material can be preliminarily filtered, and meanwhile, the anti-blocking spray head mechanism can be flexibly and quickly disassembled by matching with the threaded sleeve, and the filter cartridge in the movably sleeved filter cavity can be flexibly disassembled for cleaning and replacement.
Drawings
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a top view of the structure of the present invention;
FIG. 4 is a perspective cross-sectional view of the structural anti-clogging spray head mechanism of the present invention;
FIG. 5 is a top sectional view of a rotary gear of the present invention:
fig. 6 is a perspective view of the moving mechanism of the present invention.
In the figure: 1. a base plate; 2. a protective box; 3. a heating and feeding device; 4. a moving mechanism; 401. a base; 402. a slide bar; 403. a top plate; 404. a first motor; 405. a first screw; 406. a sliding sleeve; 407. a connecting rod; 5. connecting blocks; 6. a nozzle connecting pipe; 7. a material guide pipe; 8. a threaded bushing; 9. an anti-blocking spray head mechanism; 901. a nozzle body; 902. a filter chamber; 903. a mechanical cavity; 904. a heating cavity; 905. a through hole; 906. a filter cartridge; 907. a second motor; 908. a second screw; 909. an anti-blocking screw pipe; 910. a limiting pipe; 911. a rotating gear; 912. a discharge hole; 10. a transmission gear; 11. a reflux mechanism; 1101. a return conduit; 1102. an inner gear ring; 1103. heating the sleeve; 1104. a helical blade; 12. a return orifice; 13. a one-way valve; 14. an electric turntable.
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 obtained by workers skilled in the art without any inventive work based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a technical solution: A3D printer convenient for cleaning a spray head comprises a bottom plate 1, wherein the top of the bottom plate 1 is fixedly connected with a protective box 2, the top of the protective box 2 is fixedly connected with a heating and feeding device 3, the top of the bottom plate 1 is fixedly connected with three moving mechanisms 4, one sides of the three moving mechanisms 4 close to each other are movably connected with connecting blocks 5, one sides of the three connecting blocks 5 opposite to each other are fixedly connected with a spray head connecting pipe 6, the top of the spray head connecting pipe 6 is fixedly communicated with the heating and feeding device 3 through a material guide pipe 7, the lower part of the spray head connecting pipe 6 is in threaded connection with an anti-blocking spray head mechanism 9 through a threaded sleeve 8, a transmission gear 10 is movably connected in the anti-blocking spray head mechanism 9, the anti-blocking spray head mechanism 9 is fixedly sleeved with a backflow mechanism 11, the inner wall of the anti-blocking spray head mechanism 9 is provided with a backflow hole 12 penetrating through the inner side of the backflow mechanism 11, and the spray head connecting pipe 6 is internally provided with a one-way valve 13, the middle part swing joint of bottom plate 1 top surface has electric turntable 14, through the setting of cartridge filter 906, makes it can carry out the prefilter to the material, cooperates threaded sleeve 8 simultaneously, can be with preventing the nimble quick dismantlement of stifled shower nozzle mechanism 9, and the cartridge filter 906 in the filter chamber 902 that the activity cup jointed can be demolishd in a flexible way, washs the change, and simple structure dismantles easily, has improved the efficiency of maintaining greatly.
In this embodiment, as shown in fig. 1, 3 and 6, the moving mechanism 4 includes a base 401, and the base 401 is fixedly connected to the top of the bottom plate 1, the top of the base 401 is fixedly connected to the bottom of the top plate 403 through two sliding rods 402, and the top of the top plate 403 is fixedly connected to a first motor 404, an output end of the first motor 404 penetrates through the top plate 403 and is fixedly connected to the top of a first screw 405 below the top plate, a sliding sleeve 406 is sleeved on the first screw 405 in a threaded manner, the sliding sleeve 406 is movably sleeved on the two sliding rods 402, one side of the sliding sleeve 406 is movably connected to two connecting rods 407, and the other end of the two connecting rods 407 is movably connected to one of the connecting blocks 5.
In this embodiment, as shown in fig. 4 and fig. 5, the anti-blocking nozzle mechanism 9 includes a nozzle body 901, the nozzle body 901 is screwed into the threaded sleeve 8, the nozzle body 901 is sequentially provided with a filter cavity 902, a mechanical cavity 903 and a heating cavity 904 from top to bottom, the bottom of the filter cavity 902 is provided with a through hole 905 penetrating to the top of the heating cavity 904, the filter cylinder 906 is movably sleeved in the filter cavity 902, the top of the mechanical cavity 903 is fixedly connected with a second motor 907, an output end of the second motor 907 penetrates through the mechanical cavity 903 and is fixedly connected with the top end of a second screw 908 therebelow, an anti-blocking screw pipe 909 is screwed on the second screw 908, a limit pipe 910 is slidably sleeved on the anti-blocking screw pipe 909, the top of the anti-blocking screw pipe 909 is fixedly connected with the top of the heating cavity 904, a rotating gear 911 is fixedly sleeved on the output end of the second motor 907, a transmission gear 10 is movably connected to the top and the bottom of the inner wall of the mechanical cavity 903, and the transmission gear 10 is engaged with the rotating gear 911, and one side of the transmission gear 10 penetrates through the nozzle body 901 and extends to the inner side of the backflow mechanism 11, the middle part of the bottom surface of the nozzle body 901 is provided with a discharge hole 912 penetrating to the bottom of the heating cavity 904, through the matching of the second screw 908 and the limiting pipe 910, the anti-blocking screw pipe 909 can move downwards to penetrate into the discharge hole 912 and extend to the bottom side of the discharge hole 912 to block the discharge hole 912, so that the excessive material is prevented from overflowing and solidifying to block the discharge hole 912, the anti-blocking screw pipe 909 is jacked up when in use, the blocking of the discharge hole 912 is removed, and the smoothness of the discharge hole 912 can be recovered.
In this embodiment, as shown in fig. 4 and 5, the backflow mechanism 11 includes a backflow sleeve 1101, the backflow sleeve 1101 is fixedly sleeved on the showerhead body 901, an inner gear ring 1102 is movably overlapped on the upper portion of the inner wall of the backflow sleeve 1101, the inner side of the inner gear ring 1102 is engaged with the outer side of the transmission gear 10, the top of the inner gear ring 1102 is fixedly connected with a heating sleeve 1103, a helical blade 1104 is fixedly sleeved on the heating sleeve 1103, the heating sleeve 1103 and the helical blade 1104 are driven to rotate by the cooperation of the transmission gear 10 and the inner gear ring 1102, so as to form a negative pressure in the backflow sleeve 1101, and the material melted in the heating cavity 904 enters the backflow sleeve 1101 through the backflow hole 12, thereby avoiding the blockage caused by cooling and condensation of excessive material in the heating cavity 904 after shutdown, when the material is used again, the heating sleeve 1103 heats the material, the reversed helical blade pushes the material to backflow hole 12, the raw material entering the heating cavity 904 is heated for the second time, so that the heating efficiency and quality of the end part are improved, the long heating and feeding of the feeding device 3 are not required to be waited for, and the waiting time of mechanical operation is effectively shortened.
In this embodiment, as shown in fig. 1, 3 and 6, the first screw 405 is located in the middle between the two sliding rods 402, and the three moving mechanisms 4 are radially and equidistantly arranged on the top of the bottom plate 1 by taking the central axis of the electric rotating disc 14 as an axis.
In this embodiment, as shown in fig. 4 and 5, the bottom end of the anti-blocking screw pipe 909 is processed in an arc shape, the diameter of the anti-blocking screw pipe 909 is matched with the diameter of the discharge hole 912, the heating wire is fixedly nested in the showerhead body 901, the lower portion of the inner wall of the heating cavity 904 is provided with a conical discharge slope whose diameter is reduced from top to bottom, and the return hole 12 is located at the lower position of the conical discharge slope.
In this embodiment, as shown in fig. 1, 2 and 6, the outer wall of the lower portion of the nozzle connecting pipe 6 is provided with threads matching with the inner wall of the threaded sleeve 8, the three connecting blocks 5 are axially and radially arranged on the outer wall of the upper portion of the nozzle connecting pipe 6 at equal intervals, and the bottom of the nozzle connecting pipe 6 is fixedly connected with a splicing pipe matching with the filter cartridge 906.
The use method and the advantages of the invention are as follows: this kind of 3D printer convenient to wash shower nozzle is at the during operation, and the working process is as follows:
as shown in fig. 1, 2, 3, 4, 5 and 6, a method for using a 3D printer for conveniently cleaning a nozzle includes the following steps:
s1, firstly, the model direction on the rotary electric turntable 14 can be flexibly adjusted, the three moving mechanisms 4 respectively control the running states of the three first motors 404 to adjust the heights of the three sliding sleeves 406 on the first screw 405, so that the plane position and the horizontal height of the nozzle connecting pipe 6 can be flexibly adjusted through the three groups of connecting rods 407, the three moving mechanisms 4 are separated from the running state without interference, the later-stage independent disassembly, maintenance and cleaning are facilitated, and the use is more convenient;
s2, the upper part of the anti-blocking spray head mechanism 9 can be quickly butted with the spray head connecting pipe 6 by rotating the threaded sleeve 8 or the rotary spray head body 901, so that the subsequent independent maintenance and cleaning of the spray head body 901 are facilitated, the structure is simple, and the practicability is strong;
s3, the heating and feeding device 3 can convey the preliminarily melted raw materials into the nozzle connecting pipe 6 through the material guide pipe 7, and the raw materials enter the filter cylinder 906 through the one-way valve 13 under pressure, so that impurities in the raw materials can be filtered, enter the heating cavity 904 through the through hole 905, and finally flow out through the discharge hole 912 at the bottom of the heating cavity for use;
s4, after modeling is completed, the second motor 907 is started to drive the rotating gear 911 and the second screw 908 to rotate synchronously, the anti-blocking screw pipe 909 screwed on the second screw 908 is downwards displaced to penetrate into the discharge hole 912 and extend to the bottom side of the discharge hole under the sliding limit of the limiting pipe 910 to block the discharge hole 912, so that excessive materials are prevented from overflowing and condensing to block the discharge hole 912, meanwhile, the transmission gear 10 meshed with the rotating gear 911 drives the inner gear ring 1102 to rotate, the heating sleeve 1103 and the spiral blade 1104 rotate along with the inner gear ring, negative pressure is formed in the backflow sleeve 1101, the molten materials in the heating cavity 904 enter the backflow sleeve 1101 through the backflow hole 12, and accordingly, excessive materials in the heating cavity 904 are prevented from being cooled, condensed and blocked after shutdown;
s5, when the machine is started again for use, the nozzle body 901 heats the body and the reflux sleeve 1101 simultaneously through the heating wire to melt the raw material, the second motor 907 is started reversely, the raw material flows back to the reflux hole 12 through the spiral blade 1104 rotating reversely, the raw material entering the heating cavity 904 is heated for the second time in the process of reflux, the heating efficiency is improved, and meanwhile, the anti-blocking spiral pipe 909 is lifted up to remove the blockage of the discharge hole 912.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a 3D printer convenient to wash shower nozzle, includes bottom plate (1), its characterized in that: the top of the bottom plate (1) is fixedly connected with a protection box (2), the top of the protection box (2) is fixedly connected with a heating feeding device (3), the top of the bottom plate (1) is fixedly connected with three moving mechanisms (4), one side close to the three moving mechanisms (4) is movably connected with a connecting block (5), the other side opposite to the connecting block (5) is fixedly connected with a spray head connecting pipe (6), the top of the spray head connecting pipe (6) is fixedly communicated with the heating feeding device (3) through a guide pipe (7), the lower part of the spray head connecting pipe (6) is in threaded connection with an anti-blocking spray head mechanism (9) through a threaded sleeve (8), the anti-blocking spray head mechanism (9) is internally and movably connected with a transmission gear (10), the anti-blocking spray head mechanism (9) is fixedly connected with a backflow mechanism (11), and the inner wall of the anti-blocking spray head mechanism (9) is provided with a backflow hole (12) penetrating through the inner side of the backflow mechanism (11), a one-way valve (13) is arranged in the nozzle connecting pipe (6), and an electric rotating disc (14) is movably connected to the middle of the top surface of the bottom plate (1).
2. The 3D printer of claim 1, wherein the nozzle is conveniently cleaned by: the moving mechanism (4) comprises a base (401), the base (401) is fixedly connected to the top of the bottom plate (1), the top of the base (401) is fixedly connected to the bottom of the top plate (403) through two sliding rods (402), the top of the top plate (403) is fixedly connected to a first motor (404), the output end of the first motor (404) penetrates through the top plate (403) and is fixedly connected to the top of a first screw (405) below the top plate, a sliding sleeve (406) is sleeved on the first screw (405) in a threaded manner, the sliding sleeve (406) is movably sleeved on the two sliding rods (402), two connecting rods (407) are movably connected to one side of the sliding sleeve (406), and the other ends of the two connecting rods (407) are movably connected to one of the connecting blocks (5).
3. The 3D printer of claim 1, wherein the nozzle is conveniently cleaned by: the anti-blocking spray head mechanism (9) comprises a spray head body (901), the spray head body (901) is in threaded connection with the interior of a threaded sleeve (8), a filter cavity (902), a mechanical cavity (903) and a heating cavity (904) are sequentially arranged in the spray head body (901) from top to bottom, a through hole (905) penetrating through the top of the heating cavity (904) is formed in the bottom of the filter cavity (902), a filter cartridge (906) is movably sleeved in the filter cavity (902), the top of the mechanical cavity (903) is fixedly connected with a second motor (907), the output end of the second motor (907) penetrates through the mechanical cavity (903) and is fixedly connected with the top end of a second screw (908) below the mechanical cavity, an anti-blocking screw pipe (909) is sleeved on an upper thread, a limiting pipe (910) is sleeved on the anti-blocking screw pipe (909) in a sliding manner, and the top of the anti-blocking screw pipe (909) is fixedly connected with the top of the heating cavity (904), the output end of the second motor (907) is fixedly sleeved with a rotating gear (911), the transmission gear (10) is movably connected to the upper side and the lower side of the inner wall of the mechanical cavity (903), the transmission gear (10) is meshed with the rotating gear (911), one side of the transmission gear (10) penetrates through the spray head body (901) and extends to the inner side of the backflow mechanism (11), and the middle of the bottom surface of the spray head body (901) is provided with a discharge hole (912) which penetrates through the bottom of the heating cavity (904).
4. The 3D printer of claim 3, wherein the nozzle is convenient to clean: backflow mechanism (11) include backflow sleeve (1101), and backflow sleeve (1101) are fixed to be cup jointed on shower nozzle body (901), the upper portion activity overlap joint of backflow sleeve (1101) inner wall has internal gear circle (1102), and the inside and drive gear (10) outside meshing of internal gear circle (1102), and the top fixedly connected with heating sleeve (1103) of internal gear circle (1102), and fixed cover has connect helical blade (1104) on heating sleeve (1103).
5. The 3D printer convenient to wash shower nozzle of claim 2, characterized in that: the first screw (405) is located in the middle between the two sliding rods (402), and the three moving mechanisms (4) are radially and equidistantly arranged on the top of the bottom plate (1) by taking the central axis of the electric turntable (14) as an axis.
6. The 3D printer of claim 3, wherein the nozzle is convenient to clean: the bottom of preventing stifled screwed pipe (909) is the circular arc type and is handled, and the diameter of preventing stifled screwed pipe (909) cooperatees with the diameter of discharge opening (912), shower nozzle body (901) internal fixation nestification has the heater strip, and the conical discharge slope that the diameter from the top down reduced in proper order is seted up to the lower part of heating chamber (904) inner wall, return opening (12) are located the low level on conical discharge slope.
7. The 3D printer of claim 1, wherein the nozzle is conveniently cleaned by: the outer wall of the lower portion of the spray head connecting pipe (6) is provided with threads matched with the inner wall of the threaded sleeve (8), the number of the threads is three, the connecting blocks (5) are arranged on the outer wall of the upper portion of the spray head connecting pipe (6) in an axial and radial equidistance mode, and the bottom of the spray head connecting pipe (6) is fixedly connected with a splicing pipe matched with the filter cartridge (906).
8. The use method of the 3D printer convenient for cleaning the spray head as claimed in claim 1, comprising the following steps:
s1, firstly, the direction of a model on the rotary electric turntable (14) can be flexibly adjusted, the three moving mechanisms (4) respectively control the running states of three first motors (404) to adjust the heights of three sliding sleeves (406) on a first screw (405), so that the plane position and the horizontal height of the spray head connecting pipe (6) can be flexibly adjusted through three groups of connecting rods (407), the three moving mechanisms (4) are separated from the running state without interference, the later-stage independent disassembly, maintenance and cleaning are facilitated, and the use is more convenient;
s2, the upper part of the anti-blocking spray head mechanism (9) can be quickly butted with the spray head connecting pipe (6) by rotating the threaded sleeve (8) or the rotary spray head body (901), so that the subsequent independent maintenance and cleaning of the spray head body (901) are facilitated, the structure is simple, and the practicability is high;
s3, the heating feeding device (3) can convey the preliminarily melted raw materials into the nozzle connecting pipe (6) through the material guide pipe (7), the raw materials enter the filter cylinder (906) through the one-way valve (13) under pressure, so that impurities in the raw materials can be filtered, enter the heating cavity (904) through the through hole (905), and finally flow out through the discharge hole (912) at the bottom of the heating cavity for use;
s4, after modeling is completed, a second motor (907) is started to drive a rotating gear (911) and a second screw (908) to synchronously rotate, an anti-blocking solenoid (909) which is sleeved on the second screw (908) in a threaded mode is under the sliding limit of a limiting pipe (910) and moves downwards to penetrate through a discharge hole (912) and extend to the bottom side of the discharge hole to block the discharge hole (912), excessive materials are prevented from overflowing and condensing, the discharge hole (912) is blocked, meanwhile, a transmission gear (10) meshed with the rotating gear (911) drives an inner gear ring (1102) to rotate, a heating sleeve (1103) and a spiral blade (1104) rotate along with the heating sleeve (1103), negative pressure is formed in the backflow sleeve (1101), the molten materials in a heating cavity (904) enter the backflow sleeve (1101) through a backflow hole (12), and excessive materials in the heating cavity (904) are prevented from being cooled, condensed and blocked after shutdown is performed;
s5, when the shower nozzle is started again for use, the shower nozzle body (901) heats the body and the backflow sleeve (1101) through the heating wire simultaneously to melt the raw materials, the second motor (907) is started reversely, the raw materials flow back to the backflow hole (12) through the spiral blade (1104) rotating reversely, the raw materials entering the heating cavity (904) are heated for the second time in the backflow process, the heating efficiency is improved, meanwhile, the anti-blocking spiral pipe (909) is lifted up, and the blocking of the discharge hole (912) is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650651.1A CN114347461B (en) | 2021-12-30 | 2021-12-30 | 3D printer convenient for cleaning spray head and using method thereof |
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| CN114347461B (en) | 2022-07-29 |
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