Air circulation control device of 3D printer

Abstract

The invention discloses a 3D printer air circulation control device, and relates to the technical field of 3D printers, the 3D printer air circulation control device comprises a printer shell and an air circulation control assembly which is assembled with the printer shell and communicates with the interior of the printer shell, and the air circulation control assembly comprises an assembling seat and an air volume adjusting assembly communicating with the assembling seat; a suction purification treatment cylinder assembly is annularly arranged on the air volume adjusting assembly; the connecting cylinder is arranged at the top of the air volume adjusting assembly, and a driving unit is arranged on the connecting cylinder. According to the air volume adjusting assembly, the air volume can be adjusted in real time according to the air temperature, so that the temperature of the printer is controlled, wire deformation is prevented, the printing precision is improved, the suction purification treatment barrel assembly has the filtering treatment characteristic, harmful gas and peculiar smell in the printer can be reduced, and the environment is protected. Meanwhile, dust in the printer is sucked and filtered, so that the nozzle is prevented from being blocked or a printing platform is prevented from being polluted.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printers, and in particular to an air circulation control device for a 3D printer. Background Art

[0002] 3D printers (such as those using ABS materials) require a closed cavity and filtration system to handle toxic gases generated by heating. They are generally used in conjunction with an external air purifier and equipped with a dust collector or exhaust duct. However, in actual use, firstly, temperature changes will cause a decline in printing quality. Therefore, a customized heat dissipation solution is needed to control temperature changes in real time. Secondly, the filter device is prone to clogging and needs to be cleaned or replaced regularly, which is very cumbersome. In summary, this paper designs and provides an air circulation control device for a 3D printer. Summary of the Invention

[0003] The purpose of the present invention is to provide an air circulation control device for a 3D printer. The device can adjust the air volume in real time according to the air temperature through the air volume adjustment component, so as to achieve rapid heat dissipation at high temperatures. At the same time, the flexible adjustment of the air volume can further control the printer temperature, prevent the deformation of the wire, and improve the printing accuracy. The suction and purification treatment cylinder component provided has the filtering treatment characteristics, which can not only reduce the harmful gases and odors inside the printer, but also suck and filter the dust inside the printer to avoid clogging the nozzle or contaminating the printing platform.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution: an air circulation control device for a 3D printer, comprising a printer housing, and an air circulation control assembly assembled with the printer housing and connected to the interior thereof; the air circulation control assembly comprises an assembly seat, and an air volume adjustment assembly connected to the assembly seat; a suction and purification treatment cylinder assembly is annularly arranged on the air volume adjustment assembly, which is used to suck and filter foreign matter and harmful gases inside the printer to improve the printing quality of the printer; and a connecting cylinder is arranged on the top of the air volume adjustment assembly, and a drive unit is provided on the connecting cylinder for operating the plurality of suction and purification treatment cylinder assemblies.

[0005] Preferably, the air volume adjustment assembly includes a vertical cylinder connected to the top of the assembly seat, and a mounting ring is provided in a through groove opened in the middle of the vertical cylinder; and a regulating valve assembly is provided in the middle of the mounting ring for adjusting the flux size of the mounting ring, and the regulating valve assembly includes a cross fixed in the middle of the mounting ring, and a mounting sleeve fixed to the middle of the cross; it also includes a rotating shaft arranged between the mounting sleeve and the mounting ring and distributed in a ring, and each rotating shaft is fixed with a fan blade, when several fan blades are kept in a flush state, they can form a full circle and be used to close the opening in the middle of the mounting ring; and a transmission mechanism for driving several rotating shafts to rotate and adjusting several fan blade angles at the same time to achieve adjustment of the flux size of the mounting ring.

[0006] Preferably, the transmission mechanism includes a transmission rod assembly and an engaging transmission assembly for driving the transmission rod assembly to operate, wherein the transmission rod assembly includes a groove provided on the outer wall of the mounting ring, a rotatable transmission ring is provided in the groove; the outer end of each rotating shaft passes through a through hole provided on the side wall of the mounting ring and is fixed with a transmission bar, and a transmission groove is provided on the end of the transmission bar away from the rotating shaft; and a transmission column is annularly arranged on the outer periphery of the transmission ring, and the transmission column corresponds one-to-one to the transmission groove and can be limitedly moved within the corresponding transmission groove.

[0007] Preferably, the meshing transmission assembly includes a transmission frame fixed on the transmission ring, a plurality of teeth are equidistantly arranged on the outer edge of the transmission frame; and a drive motor fixed on the outer wall of the vertical cylinder, and a gear meshing with the plurality of teeth is fixed on the output end of the drive motor.

[0008] Preferably, a rotary sealing ring is provided between each of the rotating shafts and the through hole formed on the mounting ring.

[0009] Preferably, each of the suction purification treatment cylinder components includes a mounting plate fixed to the outer periphery of the top of the vertical cylinder, a piston sleeve fixed to the upper surface of the mounting plate; and a first through-tube and a second through-tube symmetrically distributed on both sides of the vertical cylinder, wherein the opposite ends of the first through-tube and the second through-tube are respectively connected to the vertical cylinder and the side wall of the connecting cylinder, and the opposite ends of the two extend into the interior of the piston sleeve and are symmetrically provided with a filter valve assembly, each group of filter valve assemblies includes an upper and a lower filter valve body, each filter valve body includes a mounting hole opened in the side wall of the piston sleeve, a tube body is provided in the mounting hole, and a filter valve assembly is assembled in the An activated carbon filter element is provided at one end of the tube body near the piston sleeve; it also includes a step portion arranged in the middle of the tube body, the central opening of the step portion is used for ventilation, and a one-way valve plate is provided on the side of the step portion near the piston sleeve for opening and closing the central opening of the step portion; it also includes a mounting bracket arranged at the top of the piston sleeve, a piston rod is telescopically mounted on the mounting bracket, wherein one end of the piston rod passes through a through groove opened in the top of the piston sleeve and is fixed with a piston plate, and the other end thereof is fixed with a support rod, and the driving unit is used to drive the support rod to move longitudinally so that the piston plate performs piston motion inside the piston sleeve.

[0010] Preferably, a rubber ring is provided in the through groove opened on the top of the piston sleeve to ensure the sealing of the interior of the piston sleeve.

[0011] Preferably, the driving unit includes a transmission unit, a dual-axis motor and a suction unit distributed in sequence from top to bottom, wherein the transmission unit and the suction unit are respectively arranged on the output shafts at both ends of the dual-axis motor; the transmission unit includes a transmission cylinder fixed on the output shaft at the top end of the dual-axis motor, and a limit groove opened on the outer periphery of the transmission cylinder, wherein the limit groove is composed of an upper inclined groove and a lower inclined groove connected end to end; it also includes a limit rod fixed on the top end of each support rod, and the end of the limit rod away from the support rod can slide within the limit groove; the suction unit includes a cylinder fixed on the top of the connecting cylinder and connected to the connecting cylinder, an air vent is opened on the outer periphery of the cylinder, and a suction fan is arranged inside the cylinder, and the suction fan is fixed to the output shaft at the bottom end of the dual-axis motor.

[0012] Preferably, a connecting pipe is provided between the side wall of the cylinder and the printer housing to realize the circulation process after air treatment, and a temperature sensor and a humidity sensor are respectively provided on the inner walls of the vertical cylinder and the connecting cylinder, which are respectively used to monitor the temperature of the vertical cylinder and the humidity of the air inside the connecting cylinder in real time; a refrigerator is provided at the connection between each first through pipe and the vertical cylinder; and a heating module is also provided inside the connecting cylinder to regulate the humidity of the air.

[0013] Preferably, a carbon powder filter is fixed at the lower part of the vertical cylinder, and a connecting rod is arranged at the bottom of the suction fan, wherein the connecting rod passes downward through the connecting cylinder and the mounting sleeve in sequence and is fixed with a brush rod, and the brush rod is in contact with the upper surface of the carbon powder filter.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an air volume adjustment component, which can adjust the air volume in real time according to the air temperature to achieve rapid heat dissipation under high temperature. At the same time, the flexible adjustment of the air volume can further control the temperature of the printer, prevent the deformation of the wire, and improve the printing accuracy. The suction and purification treatment cylinder component provided has the filtering treatment characteristics, which can not only reduce the harmful gases and odors inside the printer, but also suck and filter the dust inside the printer to avoid clogging the nozzle or contaminating the printing platform.

[0015] 2. As another embodiment of the present invention, the transmission cylinder where the transmission unit is located has a limit groove on its side wall which can be installed with a limit rod fixed on the top of a plurality of support rods to achieve limited sliding installation. At the same time, the limit groove is composed of an upper inclined groove and a lower inclined groove connected end to end. Therefore, when the transmission cylinder rotates, the four piston plates can be moved longitudinally in an staggered manner. While the four suction and purification treatment cylinder assemblies are staggered, the suction fan arranged inside the cylinder body runs to provide assistance for the suction of the suction and purification treatment cylinder assembly, and at the same time, the treated air inside the connecting cylinder is discharged through the air vents opened on the side wall of the cylinder body.

[0016] 3. As another embodiment of the present invention, one end of the connecting rod is fixed to the suction fan, and the other end is fixed to a brush rod, and the brush rod contacts the upper surface of the toner filter provided at the lower part of the vertical cylinder. The gas sucked out from inside the printer first contacts the toner filter to realize the pre-purification process of the gas. The toner filter here is an existing mature technology that can capture fine toner particles in the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 Schematic diagram of a local enlarged structure; Figure 3 It is a side structural schematic diagram of the present invention; Figure 4 Schematic diagram of the cross-sectional structure of AA; Figure 5 for Figure 4 Schematic diagram of a local enlarged structure; Figure 6 It is a schematic diagram of the top view of the structure of the present invention; Figure 7 Schematic diagram of the cross-sectional structure of DD; Figure 8 for Figure 7 Schematic diagram of a local enlarged structure; Figure 9 It is a schematic diagram of the enlarged structure at A; Figure 10 It is an enlarged structural diagram of the suction purification treatment cartridge assembly; Figure 11 It is an enlarged structural diagram of the air volume adjustment component; Figure 12 for Figure 11 Schematic diagram of the top view structure; Figure 13 for Figure 11 A schematic diagram of the front structure of FIG. Figure 14 It is a schematic diagram of the working state of the present invention.

[0018] In the figure: 111, assembly seat; 112, vertical cylinder; 2, suction purification treatment cylinder assembly; 211, mounting plate; 212, piston sleeve; 213, first through-pipe; 214, second through-pipe; 2151, pipe body; 2152, activated carbon filter element; 2153, one-way valve plate; 2154, step portion; 216, mounting bracket; 217, piston rod; 218, piston plate; 219, support rod; 3, connecting cylinder; 4, dual-axis motor; 5, suction unit; 511, cylinder body; 512, suction fan; 6, transmission unit Element; 611, transmission cylinder; 612, limiting groove; 613, limiting rod; 7, air volume adjustment assembly; 711, cross; 712, mounting sleeve; 713, rotating shaft; 714, fan blade; 715, transmission bar; 716, transmission groove; 717, transmission column; 718, groove; 719, transmission ring; 720, transmission frame; 721, teeth; 722, drive motor; 723, gear; 724, mounting ring; 811, carbon powder filter; 812, connecting rod; 813, brush rod; 911, refrigerator. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. The following describes various embodiments of the present invention in detail with reference to the accompanying drawings.

[0020] Example 1 See also Figures 1 to 14The present invention preferably provides a technical solution: a 3D printer air circulation control device, including a printer housing, and an air circulation control component assembled with the printer housing and connected to the interior thereof: the air circulation control component includes an assembly seat 111, and an air volume adjustment component 7 connected to the assembly seat 111; a suction purification treatment cylinder assembly 2 is annularly arranged on the air volume adjustment component 7, which is used to suck and filter foreign matter and harmful gases inside the 3D printer to improve the printing quality of the 3D printer; and a connecting cylinder 3 is arranged on the top of the air volume adjustment component 7, and a driving unit is provided on the connecting cylinder 3 for the operation of several suction purification treatment cylinder assemblies 2.

[0021] like Figure 14 It can be seen that the air circulation control device set in this application can be assembled with the printer housing, and the driving unit, connecting cylinder 3, suction and purification treatment cylinder assembly 2 and air volume adjustment assembly 7 where the air circulation control device is located are distributed from top to bottom in sequence. Figure 1 、 2 As shown, the air volume adjustment component 7 is connected to the printer housing through the assembly seat 111, and a plurality of suction and purification treatment cylinder assemblies 2 are provided on the air volume adjustment component 7 and used for communicating with the air volume adjustment component 7 and the connecting cylinder 3. The driving unit provided on the connecting cylinder 3 is used for the operation of the plurality of suction and purification treatment cylinder assemblies 2; Therefore, when the driving assembly is running, it can drive the several suction and purification treatment cylinder assemblies 2 to start, thereby sucking the air inside the printer into the connecting cylinder 3. In this process, the role of the air volume adjustment assembly 7 is to adjust the air volume in real time according to the air temperature to achieve rapid heat dissipation at high temperatures and meet the different heat dissipation requirements of 3D printers. Specifically, the air volume adjustment feature not only meets the requirement of rapid cooling of extruded hot-melt materials such as PLA and ABS to set the shape, but also accelerates heat dissipation. It also avoids poor interlayer adhesion or deformation of the filament due to uneven cooling, reducing heat accumulation. Secondly, the device can flexibly adjust the heat dissipation effect by adjusting the air volume. This can not only avoid the uneven shrinkage caused by the wire cooling too fast or too slow, which may lead to the edge of the model warping, but also the reasonable airflow can balance the cooling speed. The role of the suction and purification treatment cylinder assembly 2 in this process is manifested in: on the one hand, it serves as the power for air circulation; on the other hand, it can filter the air flowing through it. It is known that materials such as ABS will release trace amounts of toxic gases such as styrene at high temperatures, and long-term inhalation may be harmful to health. The suction and purification treatment cylinder assembly 2 here can reduce the accumulation of harmful gases. Although PLA is relatively safe, it may still produce odor at high temperatures. Air flow can improve the user experience, but dust can easily clog the nozzle or contaminate the printing platform.

[0022] Example 2 As another embodiment of the present invention, the air volume adjustment component 7 includes a vertical cylinder 112 connected to the top of the assembly seat 111, and a mounting ring 724 is provided in the through groove opened in the middle of the vertical cylinder 112; and a regulating valve assembly is provided in the middle of the mounting ring 724 for adjusting the flux size of the mounting ring 724, and the regulating valve assembly includes a cross 711 fixed in the middle of the mounting ring 724, and a mounting sleeve 712 fixed to the middle of the cross 711; it also includes a rotating shaft 713 arranged between the mounting sleeve 712 and the mounting ring 724 and distributed in a ring, and each rotating shaft 713 is fixed with a fan blade 714. When several fan blades 714 are kept in a flush state, they can form a full circle and are used to close the opening in the middle of the mounting ring 724; and a transmission mechanism for driving several rotating shafts 713 to rotate and adjust the angles of several fan blades 714 at the same time to achieve adjustment of the flow size of the mounting ring 724.

[0023] Combine Figure 5 、 11 As shown in Figures 12 and 13, it is known that the mounting ring 724 is fixed inside the through groove in the middle of the vertical cylinder 112, and a regulating valve assembly is provided in the middle of the mounting ring 724 to adjust the flow of the mounting ring 724 and the opening in the middle of the vertical cylinder 112, thereby adjusting the flow of air entering the internal parts of the plurality of suction and purification cylinder assemblies 2; Specific combination Figure 11 、 12 As shown, the mounting sleeve 712 is placed in the center of the mounting ring 724, and a rotating shaft 713 is installed between the mounting sleeve 712 and the mounting ring 724 for circular rotation. A fan blade 714 is fixed on each rotating shaft 713, and a plurality of fan blades 714 can form a full circle and be used to close the opening in the middle of the mounting ring 724, as shown in FIG. Figure 12 As shown in the state, since the rotating shaft 713 can be rotated under the action of the transmission mechanism, the angles of the plurality of blades 714 can be tilted, thereby adjusting the opening flow of the vertical cylinder 112 and the mounting ring 724.

[0024] Furthermore, the transmission mechanism includes a transmission rod assembly and an engaging transmission assembly for driving the transmission rod assembly to operate, wherein the transmission rod assembly includes a groove 718 opened on the outer wall of the mounting ring 724, and a rotatable transmission ring 719 is provided in the groove 718; the outer end of each rotating shaft 713 passes through the through hole opened on the side wall of the mounting ring 724 and is fixed with a transmission bar 715, and the end of the transmission bar 715 away from the rotating shaft 713 is provided with a transmission groove 716; and a transmission column 717 annularly arranged on the outer periphery of the transmission ring 719, and the transmission column 717 corresponds one-to-one to the transmission groove 716 and can be limitedly moved within the corresponding transmission groove 716; further, the engaging transmission assembly includes a transmission frame 720 fixed on the transmission ring 719, and a plurality of teeth 721 are equidistantly provided on the outer edge of the transmission frame 720; and a driving motor 722 fixed on the outer wall of the vertical cylinder 112, and a gear 723 meshing with the plurality of teeth 721 is fixed at the output end of the driving motor 722.

[0025] like Figure 11 、 12 As shown in Figure 13, the transmission ring 719 is rotatably installed in the groove 718 opened on the outside of the mounting ring 724, and the outer end of each rotating shaft 713 passes through the through hole opened on the side wall of the mounting ring 724 and is fixed with a transmission bar 715, and the transmission groove 716 opened on the transmission bar 715 can be slidingly installed with the transmission column 717 set on the transmission ring 719. At the same time, the transmission frame 720 fixed to the transmission ring 719, and the several teeth 721 fixed thereon can engage with the gear 723 at the output end of the driving motor 722. Therefore, when the driving motor 722 rotates, the transmission ring 719 and the several transmission columns 717 on the transmission ring 719 can be rotated. Since the length of each transmission groove 716 is limited, the several transmission columns 717 can adaptively move inside the corresponding transmission groove 716, thereby driving the several transmission bars 715 and the rotating shaft 713 to rotate.

[0026] Furthermore, a rotating sealing ring is provided between each rotating shaft 713 and the through hole provided on the mounting ring 724 to ensure the sealing of the outer wall of the fan blade 714 .

[0027] Example 3 As other embodiments of the present invention, each suction purification treatment cylinder assembly 2 includes a mounting plate 211 fixed to the outer periphery of the top of the vertical cylinder 112, a piston sleeve 212 fixed to the upper surface of the mounting plate 211; and a first through-tube 213 and a second through-tube 214 symmetrically distributed on both sides of the vertical cylinder 112, wherein the opposite ends of the first through-tube 213 and the second through-tube 214 are respectively connected to the vertical cylinder 112 and the side wall of the connecting cylinder 3, and the opposite ends of the two extend into the interior of the piston sleeve 212 and are symmetrically provided with filter valve assemblies, each group of filter valve assemblies includes upper and lower filter valve bodies, each filter valve body includes a mounting hole opened on the side wall of the piston sleeve 212, a tube body 2151 is provided in the mounting hole, and a tube body 2151 is assembled on the tube body 2151 near the piston sleeve 212; also includes a step portion 2154 arranged in the middle of the tube body 2151, the center opening of the step portion 2154 is used for ventilation, and a one-way valve plate 2153 arranged on the side of the step portion 2154 close to the piston sleeve 212, which is used for opening and closing the center opening of the step portion 2154; also includes a mounting bracket 216 arranged on the top of the piston sleeve 212, and a piston rod 217 is telescopically mounted on the mounting bracket 216, wherein one end of the piston rod 217 passes through the through groove opened at the top of the piston sleeve 212 and is fixed with a piston plate 218, and the other end thereof is fixed with a support rod 219, and the driving unit is used to drive the support rod 219 to move longitudinally, so that the piston plate 218 performs piston motion inside the piston sleeve 212.

[0028] See Figure 2 、 8, 9, 10, in this embodiment, the suction purification treatment cylinder assembly 2 is preferably four groups, and the first through-tube 213 and the second through-tube 214 are symmetrically arranged on both sides of the piston sleeve 212 where each group of suction purification treatment cylinder assembly 2 is located. Figure 10 As shown, the opposite ends of the first through-tube 213 and the second through-tube 214 are respectively connected to the side walls of the vertical cylinder 112 and the connecting cylinder 3, and the opposite ends of the two extend into the interior of the piston sleeve 212 and are symmetrically provided with a filter valve assembly. Here, a single filter valve assembly is composed of two filter valve bodies distributed up and down, and the two upper filter valve bodies where the first through-tube 213 and the second through-tube 214 are located are arranged oppositely, and the two lower filter valve bodies are arranged oppositely, as shown in FIG. Figure 9 At the same time, an activated carbon filter element 2152 is provided at one end of the pipe body 2151 where each filter valve body is located, close to the piston sleeve 212, and a one-way valve plate 2153 is provided on the side of the step portion 2154 provided in the middle, close to the piston sleeve 212 (that is, the two one-way valve plates 2153 on the first through pipe 213 are placed on the right side of the step portion 2154, and the two one-way valve plates 2153 on the second through pipe 214 are placed on the right side of the step portion 2154, see Figure 9 ), here the activated carbon filter element 2152 is an existing mature technology, which can absorb dust and harmful gases; The piston plate 218 provided in the piston sleeve 212 can realize longitudinal movement under the driving action of the piston rod 217 and the support rod 219 in combination with the driving action of the driving unit. In conjunction with the above-mentioned structures, when the piston plate 218 moves longitudinally, the one-way valve plates 2153 where the four groups of filter valve bodies are located can be switched, thereby realizing the air suction, filtration and self-cleaning process. To facilitate the description of the functions of the filter valve bodies, the upper filter valve body where the first and second through pipes 213 and 214 are located is designated A or B, respectively, and the lower filter valve body where the first and second through pipes 213 and 214 are located is designated C or D, respectively. The movable range of the piston plate 218 is between the upper and lower filter valve bodies. Combine Figure 9When the piston plate 218 moves upward inside the piston sleeve 212, the lower chamber of the piston sleeve 212 increases. Under the action of air pressure, the one-way valve plate 2153 at C opens toward the piston sleeve 212, the one-way valve plate 2153 at D closes, and the one-way valve plate 2153 at A closes. The one-way valve plate 2153 at B opens toward the connecting cylinder 3, thereby sucking the air inside the vertical cylinder 112 into the lower chamber of the piston sleeve 212 through C. In this process, the air can pass through the activated carbon filter element at C. 2152 is filtered, and at the same time, the activated carbon filter element 2152 at D is sucked toward the piston sleeve 212, achieving self-cleaning. Simultaneously with this process, the one-way valve plate 2153 at A is closed, and the one-way valve plate 2153 at B is opened toward the connecting cylinder 3. When the lower chamber of the piston sleeve 212 draws gas, the air in the upper chamber of the piston sleeve 212 is pushed into the interior of the connecting cylinder 3 and further filtered through the activated carbon filter element 2152 at B. At the same time, the activated carbon filter element 2152 at A is self-cleaning. Conversely, when the piston plate 218 moves downward inside the piston sleeve 212, the one-way valve plate 2153 at A opens toward the piston sleeve 212, the one-way valve plate 2153 at B closes, and at the same time the one-way valve plate 2153 at C closes, while the one-way valve plate 2153 at D opens toward the connecting cylinder 3, so that the air inside the vertical cylinder 112 is sucked into the upper chamber of the piston sleeve 212 through A, and the air in the lower chamber of the piston sleeve 212 is pushed into the inside of the connecting cylinder 3; In this embodiment, A, B or C, D that cooperate with each other can complete self-cleaning when each other is performing air purification, thereby ensuring the filtering and purification effect and further improving the filtering quality of harmful gases and impurities.

[0029] Furthermore, a rubber ring is provided in the through groove formed on the top of the piston sleeve 212 to ensure the sealing performance of the interior of the piston sleeve 212 .

[0030] Example 4 As other embodiments of the present invention, the driving unit includes a transmission unit 6, a dual-axis motor 4 and a suction unit 5 distributed in sequence from top to bottom, wherein the transmission unit 6 and the suction unit 5 are respectively arranged on the output shafts at both ends of the dual-axis motor 4; the transmission unit 6 includes a transmission cylinder 611 fixed on the top output shaft of the dual-axis motor 4, and a limiting groove 612 opened on the outer periphery of the transmission cylinder 611, wherein the limiting groove 612 is composed of an upper inclined groove and a lower inclined groove connected end to end; it also includes a limiting rod 613 fixed at the top of each support rod 219, and the end of the limiting rod 613 away from the support rod 219 can slide within the limiting groove 612; further, the suction unit 5 includes a cylinder body 511 fixed on the top of the connecting cylinder 3 and connected to the connecting cylinder 3, and the outer periphery of the cylinder body 511 is provided with an air vent, and a suction fan 512 is arranged inside the cylinder body 511, and the suction fan 512 is fixed to the output shaft at the bottom end of the dual-axis motor 4.

[0031] It is known that the transmission unit 6 and the suction unit 5 are respectively arranged on the output shafts at both ends of the dual-axis motor 4, so when the dual-axis motor 4 is running, the transmission unit 6 and the suction unit 5 can be operated simultaneously; The transmission cylinder 611, where the transmission unit 6 is located, has a limiting groove 612 on its side wall that can be slidably mounted with a limiting rod 613 fixed to the top of the plurality of support rods 219. The limiting groove 612 is composed of an upper inclined groove and a lower inclined groove connected end to end. Therefore, when the transmission cylinder 611 rotates, the four piston plates 218 can be moved longitudinally in an alternating manner. While the four suction purification treatment cylinder assemblies 2 are being operated alternately, the suction fan 512 provided inside the cylinder 511 is running to provide assistance for the suction of the suction purification treatment cylinder assembly 2, and at the same time discharge the treated air inside the connecting cylinder 3 through the air vents opened on the side wall of the cylinder 511. This is the first implementation method of the cylinder 511.

[0032] Example 5 As another embodiment of the cylinder 511, a connecting pipe is provided between the side wall of the cylinder 511 and the printer housing to realize the circulation process after air treatment, and temperature sensors and humidity sensors are respectively provided on the inner walls of the vertical cylinder 112 and the connecting cylinder 3, which are respectively used to monitor the temperature of the vertical cylinder 112 and the humidity of the air inside the connecting cylinder 3 in real time; a refrigerator 911 is provided at the connection between each first through pipe 213 and the vertical cylinder 112; and it also includes a heating module provided inside the connecting cylinder 3 for regulating the humidity of the air.

[0033] In this embodiment, combined Figure 1 、 2 , 10, and 11, the air can pass through the vertical cylinder 112, the refrigerator 911, and the connecting cylinder 3 in sequence, and then enter the interior of the printer through the connecting pipe. In this process, the air sucked out from the interior of the printer first contacts the temperature sensor provided in the vertical cylinder 112. When the temperature sensor detects that the temperature of the gas flowing through the interior of the vertical cylinder 112 is too high, the single-chip microcomputer receives the temperature signal, causes the drive motor 722 where the air volume regulating component 7 is located to operate, and adaptively adjusts the inclination angle of the fan blade 714 to accelerate the heat dissipation efficiency of the printer. Subsequently, when this part of the gas enters the first through-tube 213 where the suction and purification treatment cylinder component 2 is located, this part of the air contacts the refrigerator 911, and combines Figure 10 As shown, the gas is cooled, and then the cooled gas is filtered and enters the interior of the connecting tube 3 and contacts the humidity sensor provided in the connecting tube 3. When the humidity sensor detects that the humidity of the gas inside the connecting tube 3 is too high, it transmits the humidity information to the single-chip microcomputer, and the single-chip microcomputer controls the adaptive operation of the heating module in real time, so that the air entering the printer through the connecting tube maintains a moderate temperature and humidity.

[0034] Example 6 As other embodiments of the present invention, a carbon powder filter 811 is fixed to the lower part of the vertical cylinder 112, and a connecting rod 812 is arranged at the bottom of the suction fan 512, wherein the connecting rod 812 passes downward through the connecting cylinder 3 and the mounting sleeve 712 in sequence and is fixed with a brush rod 813, and the brush rod 813 is in contact with the upper surface of the carbon powder filter 811.

[0035] like Figure 8 As shown, one end of the connecting rod 812 is fixed to the suction fan 512, and the other end is fixed with a brush rod 813, and the brush rod 813 is in contact with the upper surface of the toner filter 811 provided at the lower part of the vertical cylinder 112. The gas sucked out from the inside of the printer first contacts the toner filter 811 to realize the pre-purification process of the gas. Here, the toner filter 811 is an existing mature technology that can capture fine toner particles in the air.

[0036] In the present invention, unless otherwise expressly specified or limited, the terms "install," "connect," "connect," "fix," and the like should be understood in a broad sense. For example, they may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. There are various methods for removable installation, such as plug-in and snap-fit ​​connections, or bolt connections.

[0037] The above is a clear and complete description of the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation.

[0038] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.

Claims

1. A 3D printer air circulation control device comprising a printer housing and an air circulation control assembly assembled with the printer housing and communicating with the interior of the printer housing, characterized in that: The air circulation control assembly includes an assembly seat (111) and an air volume adjustment assembly (7) in communication with the assembly seat (111); The air volume regulating component (7) is provided with a suction purification treatment cylinder component (2) in an annular shape, which is used to suck and filter foreign matter and harmful gases inside the 3D printer to improve the printing quality of the 3D printer; And a connecting cylinder (3) arranged on the top of the air volume adjustment component (7), wherein a driving unit is provided on the connecting cylinder (3) for operating a plurality of suction purification treatment cylinder components (2).

2. The 3D printer air circulation control device according to claim 1, characterized in that: The air volume regulating assembly (7) includes a vertical cylinder (112) connected to the top of the assembly seat (111), and a mounting ring (724) is provided in a through groove opened in the middle of the vertical cylinder (112); and a regulating valve assembly provided in the middle of the mounting ring (724) for adjusting the flux size of the mounting ring (724), the regulating valve assembly comprising a cross (711) fixed in the middle of the mounting ring (724), and a mounting sleeve (712) fixed to the middle of the cross (711); It also includes rotating shafts (713) arranged between the mounting sleeve (712) and the mounting ring (724) and distributed in an annular shape, and each rotating shaft (713) is fixed with a fan blade (714). When the fan blades (714) are kept in a flush state, they can form a full circle and be used to close the opening in the middle of the mounting ring (724); and a transmission mechanism for driving the plurality of rotating shafts (713) to rotate and adjusting the angles of the plurality of fan blades (714) to achieve adjustment of the flow rate of the mounting ring (724).

3. The 3D printer air circulation control device according to claim 2, characterized in that: The transmission mechanism includes a transmission rod assembly and an engaging transmission assembly for driving the transmission rod assembly to operate, wherein the transmission rod assembly includes a groove (718) provided on the outer wall of the mounting ring (724), and a rotatable transmission ring (719) is provided in the groove (718); The outer end of each rotating shaft (713) passes through a through hole provided in the side wall of the mounting ring (724) and is fixed with a transmission bar (715), and a transmission groove (716) is provided at one end of the transmission bar (715) away from the rotating shaft (713); and a transmission column (717) annularly arranged on the outer periphery of the transmission ring (719), wherein the transmission column (717) corresponds one-to-one to the transmission groove (716) and can move within the corresponding transmission groove (716).

4. The 3D printer air circulation control device according to claim 3, characterized in that: The meshing transmission assembly comprises a transmission frame (720) fixed on the transmission ring (719), and a plurality of teeth (721) are equidistantly arranged on the outer edge of the transmission frame (720); A driving motor (722) is fixed to the outer wall of the vertical cylinder (112), and a gear (723) meshing with a plurality of teeth (721) is fixed to the output end of the driving motor (722).

5. The 3D printer air circulation control device according to claim 2, characterized in that: A rotating sealing ring is provided between each rotating shaft (713) and the through hole opened on the mounting ring (724).

6. The 3D printer air circulation control device according to claim 1, characterized in that: Each of the suction purification treatment cylinder assemblies (2) comprises a mounting plate (211) fixed to the outer periphery of the top of the vertical cylinder (112), and a piston sleeve (212) fixed to the upper surface of the mounting plate (211); and a first through-tube (213) and a second through-tube (214) centrally and symmetrically distributed on both sides of the vertical cylinder (112), wherein the opposite ends of the first through-tube (213) and the second through-tube (214) are respectively communicated with the vertical cylinder (112) and the side wall of the connecting cylinder (3), and the opposite ends of the first through-tube (213) and the second through-tube (214) extend into the interior of the piston sleeve (212) and are symmetrically provided with filter valve assemblies, each set of filter valve assemblies comprising upper and lower filter valve bodies, each filter valve body comprising a mounting hole provided on the side wall of the piston sleeve (212), a tube body (2151) being provided in the mounting hole, and an activated carbon filter element (2152) assembled on one end of the tube body (2151) close to the piston sleeve (212); It also includes a step portion (2154) provided in the middle of the tube body (2151), the central opening of the step portion (2154) being used for ventilation, and a one-way valve plate (2153) provided on a side of the step portion (2154) close to the piston sleeve (212) for opening and closing the central opening of the step portion (2154); It also includes a mounting frame (216) arranged on the top of the piston sleeve (212), and a piston rod (217) is telescopically mounted on the mounting frame (216), wherein one end of the piston rod (217) passes through a through slot opened on the top of the piston sleeve (212) and is fixed with a piston plate (218), and the other end of the piston rod (217) is fixed with a support rod (219), and the driving unit is used to drive the support rod (219) to move longitudinally, so that the piston plate (218) performs piston motion inside the piston sleeve (212).

7. The 3D printer air circulation control device according to claim 6, characterized in that: A rubber ring is provided in the through groove formed on the top of the piston sleeve (212) to ensure the sealing performance of the interior of the piston sleeve (212).

8. The 3D printer air circulation control device according to claim 1, characterized in that: The driving unit comprises a transmission unit (6), a dual-axis motor (4), and a suction unit (5) which are sequentially arranged from top to bottom, wherein the transmission unit (6) and the suction unit (5) are respectively arranged on the output shafts at both ends of the dual-axis motor (4); The transmission unit (6) comprises a transmission cylinder (611) fixed on the top output shaft of the dual-axis motor (4), and a limiting groove (612) provided on the outer periphery of the transmission cylinder (611), wherein the limiting groove (612) is composed of an upper inclined groove and a lower inclined groove connected end to end; It also includes a limiting rod (613) fixed to the top end of each support rod (219), and the end of the limiting rod (613) away from the support rod (219) can slide within the limiting groove (612); The suction unit (5) comprises a cylinder (511) fixed on the top of the connecting cylinder (3) and connected to the connecting cylinder (3), an air vent is provided on the outer periphery of the cylinder (511), and a suction fan (512) is arranged inside the cylinder (511), and the suction fan (512) is fixed to the output shaft at the bottom end of the dual-axis motor (4).

9. The 3D printer air circulation control device according to claim 8, characterized in that: A connecting pipe is provided between the side wall of the cylinder (511) and the printer housing to realize the circulation process after air treatment; and a temperature sensor and a humidity sensor respectively provided on the inner walls of the vertical cylinder (112) and the connecting cylinder (3), for respectively monitoring the temperature of the vertical cylinder (112) and the humidity of the air inside the connecting cylinder (3) in real time; A refrigerator (911) is provided at the connection between each of the first through pipes (213) and the vertical cylinder (112); It also includes a heating module arranged inside the connecting cylinder (3) for regulating the humidity of the air.

10. The 3D printer air circulation control device according to claim 8, characterized in that: A carbon powder filter (811) is fixed to the lower portion of the vertical cylinder (112), and a connecting rod (812) is arranged at the bottom of the suction fan (512), wherein the connecting rod (812) passes downward through the connecting cylinder (3) and the mounting sleeve (712) in sequence and is fixed with a brush rod (813), and the brush rod (813) is in contact with the upper surface of the carbon powder filter (811).

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