Plastic part additive manufacturing spray head cleaning device

Abstract

The invention provides a plastic part additive manufacturing spray head cleaning device, and relates to the technical field of cleaning devices. The plastic part additive manufacturing spray head cleaning device comprises a cleaning tank and an electric push rod, a top plate is fixedly arranged at the midpoint of the upper end face of the cleaning tank, an air blower is fixedly arranged on one side of the upper end face of the top plate, and blow-drying mechanisms are fixedly arranged at the positions, located on the same side, of the front end face and the rear end face of the top plate; a surface impurity removing mechanism is installed on one side of the bottom end face in the cleaning tank, a connecting plate is fixedly arranged at the lower end of an electric push rod, first telescopic rods are fixedly arranged on the two sides of the lower end face of the connecting plate, and placing mechanisms are fixedly arranged on the lower end faces of the two first telescopic rods. The device can quickly complete clamping and fixing of the two spray head bodies, has an auxiliary vibration function, accelerates shaking off of surface impurities, can filter and treat the impurities on the surface of liquid to reduce attached pollution of the floating impurities when the spray heads are taken out, and has a quick blow-drying treatment function.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning devices, and in particular to a nozzle cleaning device for additive manufacturing of plastic parts. Background Art

[0002] Additive manufacturing, commonly known as 3D printing, integrates computer-aided design, material processing and molding technology, and is based on digital model files. It uses software and numerical control systems to stack special metal materials, non-metallic materials and medical biomaterials layer by layer through extrusion, sintering, melting, photocuring, spraying, etc. to produce physical objects.

[0003] Existing patent: Publication No. (CN116572530A) discloses an additive manufacturing nozzle cleaning device, including an ultrasonic cleaning tank and a cleaning rack installed on the ultrasonic cleaning tank, a tray is provided inside the ultrasonic cleaning tank, the tray is installed on the ultrasonic cleaning tank through a first lifting assembly, and the bottom of the tray is rotatably connected to the first lifting assembly; a cleaning assembly is provided below the tray, and the cleaning assembly is installed on the first lifting assembly; a pressing plate is provided above the tray, and the pressing plate is connected to the cleaning rack through a second lifting assembly, and the pressing plate is driven by a driving assembly installed on the cleaning rack. The present invention clamps the nozzle by the pressing plate and the tray, and drives the nozzle to rotate by a motor, so as to quickly throw away the liquid on the nozzle, greatly improving the work efficiency, and can use the water filter cloth placed under the support and the lifting of the lifting plate to attach impurities in the cleaning liquid to the water filter cloth, and the water filter cloth is frequently replaced, thereby ensuring the cleanliness of the cleaning liquid and extending the use time of the cleaning liquid.

[0004] However, the existing technical solutions still have the following deficiencies: the existing cleaning device cannot accelerate the separation of the nozzle and impurities, and cannot remove some impurities floating on the liquid surface, so that the nozzle is prone to re-attachment of impurities when leaving the cleaning liquid, affecting the cleaning effect of the nozzle. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a nozzle cleaning device for additive manufacturing of plastic parts, which solves the problem that the prior cleaning device cannot accelerate the separation of the nozzle and impurities, and cannot remove some impurities floating on the liquid surface, making it easy for the nozzle to re-attach impurities when leaving the cleaning liquid, affecting the cleaning effect of the nozzle.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention is realized through the following technical solutions: A cleaning device for an additive manufacturing nozzle of a plastic part, comprising a cleaning tank and an electric push rod. At the midpoint of the upper end face of the cleaning tank, a top plate is fixedly arranged. On one side of the upper end face of the top plate, a hair dryer is fixedly arranged. On the front end face and the rear end face of the top plate at the same side position, a drying mechanism is fixedly arranged. On one side of the inner bottom end face of the cleaning tank, a surface impurity removing mechanism is installed. At the lower end of the electric push rod, a connecting plate is fixedly arranged. On both sides of the lower end face of the connecting plate, a first telescopic rod is fixedly arranged. At the lower end faces of the two first telescopic rods, a placing mechanism is fixedly arranged;

[0009] The drying mechanism includes two first mounting plates and two second mounting plates. Inside the inner wall of the second mounting plate, a plurality of blowing heads are installed. Inside the two first mounting plates and the two second mounting plates, a conduit is installed and one end of the conduit is connected to the output end of the hair dryer;

[0010] The surface impurity removing mechanism includes an outer cylinder. At the upper part of the outer wall of the outer cylinder, a connecting cylinder is rotatably sleeved. At the upper part and the lower part inside the outer cylinder, a filter screen and an activated carbon filter plate are respectively installed. An inner mesh bag is installed at the upper end of the filter screen. A turbine is installed between the filter screen and the activated carbon filter plate;

[0011] The placing mechanism includes a connecting handle, a placing frame, a chassis, an internal gear disk and two second telescopic rods. At the upper end face of the internal gear disk, a pushing block is installed. At the front and rear ends of the inner bottom end face of the placing frame, a clamping mechanism is installed. At the lower end face of the placing frame, rolling balls are installed;

[0012] The clamping mechanism includes two clamping blocks, two first support blocks, a housing, two connecting springs, two bottom plates, a positioning rod, two iron blocks and two second support blocks.

[0013] Preferably, both of the two first mounting plates are L-shaped and the second mounting plate is C-shaped. The number of blowing heads arranged inside the second mounting plate at the lower end of the same first mounting plate is four. The four blowing heads are respectively located at both sides of the inner walls and both sides of the rear wall of the C-shaped second mounting plate.

[0014] Preferably, at the upper part of one side of the inner wall of the cleaning tank, a positioning plate is fixedly arranged. The connecting cylinder is threadedly sleeved on the positioning plate. The outer cylinder penetrates through the positioning plate. The inner mesh bag is located at the upper end of the filter screen inside the outer cylinder and can be detachably taken out. At the lower end of the turbine, a servo motor is arranged and the output end of the servo motor is connected to the core of the turbine shaft.

[0015] Preferably, the opening at the upper end face of the outer cylinder is always lower than the liquid level inside the cleaning tank. At the lower part of one side of the outer wall of the outer cylinder, a water outlet is fixedly arranged.

[0016] Preferably, a No. 1 driving motor is embedded in one side of the inner part of the top plate, a driving screw is fixedly provided at the output end of the No. 1 driving motor, a moving block is threadedly sleeved on the outer side of the driving screw, the moving block is horizontally slidably clamped in the inner part of the top plate, and the top end of the electric push rod is fixedly connected to the bottom end of the moving block.

[0017] Preferably, the inner bottom end surface of the cleaning tank is provided with two grooves and electromagnets are embedded on both sides of the inner walls of the grooves, the lower end of the positioning rod is embedded in the grooves and the iron blocks on both sides are connected to the electromagnets.

[0018] Preferably, a No. 2 driving motor is installed on one side of the bottom end surface inside the placement frame, and a driving shaft is fixedly provided at the output end of the No. 2 driving motor, and a driving gear is fixedly provided at the lower end of the driving shaft, and the driving gear is meshed with an inner gear disk, and there are three pushing blocks at the upper end of the inner gear disk and they are arranged around the upper end of the inner gear disk in an equidistant circle, and the inner gear disk is rotatably arranged inside the chassis, and the lower ends of the two No. 2 telescopic rods are respectively fixed on both sides of the upper end surface of the chassis and the upper ends of the two No. 2 telescopic rods are fixedly connected to the placement frame, the connecting handle is fixedly provided at the midpoint of the upper end of the placement frame and is connected to the two No. 1 telescopic rods, and two through holes are provided on the chassis.

[0019] Preferably, the number of the rolling balls is three and they are arranged in a circle with equal spacing around the lower end of the placement frame. The rolling balls include two linkage plates and rolling balls. The two linkage plates are fixedly arranged at the lower end of the placement frame. The rolling balls are rotatably arranged between the two linkage plates and are pushed by the pushing block.

[0020] Preferably, the two No. 1 support blocks are fixedly arranged at the front and rear ends of the upper end position inside the shell, the two clamping blocks are respectively located on both sides of the shell and are rotatably connected to the No. 1 support block through the No. 1 shaft rod, the front end faces of the two clamping blocks are provided with a long movable groove at one end away from the No. 1 support block and a No. 2 shaft rod is slidably arranged in the movable groove, the two ends of the two No. 2 shaft rods are rotatably arranged at the two ends of the two No. 2 support blocks, the positioning rod is fixedly arranged at the lower end of the No. 2 support block, the two connecting springs are respectively installed on both sides of the lower end surface of the shell and the two bottom plates are respectively fixedly connected to the lower ends of the two connecting springs, the two iron blocks are respectively embedded in the lower ends of the two sides of the positioning rod and are connected to the positioning rod through a telescopic spring, and the nozzle body is clamped between the two clamping blocks.

[0021] Working principle: When in use, the cleaning device installs the nozzle body on the upper end of the clamping mechanism in the placement mechanism. At this time, the clamping mechanism quickly clamps the nozzle under the guidance of the gravity of its own structure. Since two clamping mechanisms are arranged inside, the two nozzles can be quickly clamped and cleaned. After the nozzles are clamped and fixed, the electric push rod is used to put the entire placement mechanism into the cleaning tank to make the positioning rod at the lower end of the clamping mechanism embedded in the groove at the lower end. After the electromagnet is energized, suction is generated to attract the iron blocks on both sides of the positioning block to make them protrude outward, thereby completing the auxiliary clamping and fixing effect. The telescopic spring arranged at the rear end can reset and pull the iron block after the electromagnet is powered off.

[0022] After the nozzle body is clamped, installed and immersed, the ultrasonic transmitter in the cleaning tank is started for ultrasonic oscillation cleaning. At the same time, the No. 2 drive motor and the servo motor at the lower end of the turbine are started. The output end of the No. 2 drive motor drives the drive shaft and the drive gear to rotate. The drive gear drives the inner gear disk to rotate, so that the push block at the upper end rotates and moves in a circle, and generates continuous thrust on the rolling ball at the lower end during the rotation and movement, thereby prompting the entire placement mechanism to intermittently shake up and down to remove impurities attached to the nozzle body, and the turbine inside the internal surface cleaning mechanism rotates continuously to suck the liquid on the surface of the cleaning tank into the interior. The cleaning liquid after suction is filtered and processed by the filter component in the surface cleaning mechanism in turn, thereby reducing floating impurities on the liquid surface, and then reducing the impurity attachment when the nozzle body is taken out. When taking out the nozzle body, the No. 1 drive motor can be used to drive the drive screw to rotate to prompt the moving block with the outer thread sleeve to drive the electric push rod to move laterally, and when moving to the inside of the drying mechanism, the hair dryer at the upper end is started to use the inner blowing head to complete the nozzle surface blowing and drying treatment.

[0023] (III) Beneficial effects

[0024] The present invention provides a nozzle cleaning device for additive manufacturing of plastic parts. It has the following beneficial effects:

[0025] 1. The present invention provides a nozzle cleaning device for additive manufacturing of plastic parts. The device is provided with a placement mechanism and two clamping mechanisms inside the placement mechanism. The two clamping mechanisms clamp and fix two nozzle bodies respectively, so that the two nozzle bodies can be quickly clamped and cleaned. At the same time, a vibration component that can cause the entire placement mechanism to vibrate up and down is provided in the placement mechanism. The vibration component includes a No. 2 drive motor, a drive rod, a drive gear, an internal gear plate, a push block and a rolling ball used in conjunction with it. With the cooperation of the No. 1 telescopic rod, the connecting spring and the No. 2 telescopic rod, the entire placement mechanism, the clamping mechanism and the nozzle body can vibrate repeatedly up and down, thereby accelerating the removal and cleaning of impurities on the surface of the nozzle.

[0026] 2. The present invention provides a nozzle cleaning device for additive manufacturing of plastic parts. The device is provided with a surface impurity removal mechanism, which can continuously absorb impurities on the water surface generated by ultrasonic cleaning into the surface impurity removal mechanism for multiple filtration, cleaning, collection and discharge, thereby reducing floating impurities on the entire liquid surface, so as to reduce the attachment of floating impurities when the nozzle body is taken out. At the same time, after the nozzle body is taken out of the cleaning liquid, it can be placed in a drying mechanism for rapid drying treatment, thereby reducing the residual water stains on the nozzle body and the incomplete cleaning caused by the attachment of a small amount of impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the shaft side structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the top view of the placement mechanism of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the drying mechanism of the present invention;

[0030] Figure 4 It is a side structural schematic diagram of the placement mechanism of the present invention;

[0031] Figure 5 Another side view of the placement mechanism of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the clamping structure of the present invention;

[0033] Figure 7 is another structural schematic diagram of the clamping structure of the present invention;

[0034] Figure 8 It is a structural schematic diagram of the surface impurity removal mechanism of the present invention;

[0035] Fig. 9 It is a cross-sectional schematic diagram of the surface impurity removal mechanism of the present invention;

[0036] Fig.10 It is a schematic diagram of the cross-sectional structure of the present invention;

[0037] Fig.11 For the present invention Fig.10 A schematic diagram of the structure at A;

[0038] Fig.12 For the present invention Fig.10 A magnified schematic diagram of the structure at B

[0039] Among them, 1. drying mechanism; 2. hair dryer; 3. electric push rod; 4. top plate; 5. surface cleaning mechanism; 6. cleaning tank; 7. placement mechanism; 8. connecting plate; 9. telescopic rod No. 1; 10. clamping mechanism; 11. nozzle body; 12. rolling ball; 13. pushing block; 14. through hole; 15. driving motor No. 1; 16. driving screw; 17. moving block; 18. driving motor No. 2; 19. driving shaft; 20. driving gear; 21. electromagnet; 101. mounting plate No. 1; 102. mounting plate No. 2; 103. hair dryer; 501. connecting tube; 502. outer tube; 503 , water outlet; 504, inner net bag; 505, filter; 506, turbine; 507, activated carbon filter plate; 701, connecting handle; 702, placement frame; 703, chassis; 704, inner gear plate; 705, telescopic rod No. 2; 1001, clamping block; 1002, supporting block No. 1; 1003, outer shell; 1004, connecting spring; 1005, bottom plate; 1006, positioning rod; 1007, iron block; 1008, shaft rod No. 1; 1009, supporting block No. 2; 10010, shaft rod No. 2; 10011, telescopic spring; 1201, linkage plate; 1202, rolling ball. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example:

[0042] like Figure 1-12 As shown, an embodiment of the present invention provides a nozzle cleaning device for additive manufacturing of plastic parts, including a cleaning tank 6 and an electric push rod 3, a top plate 4 is fixedly arranged at the midpoint of the upper end surface of the cleaning tank 6, a hair dryer 2 is fixedly arranged on one side of the upper end surface of the top plate 4, a drying mechanism 1 is fixedly arranged at the front end surface and the rear end surface of the top plate 4 at the same side position, a surface impurity removal mechanism 5 is installed on one side of the bottom end surface of the cleaning tank 6, a connecting plate 8 is fixedly arranged at the lower end of the electric push rod 3, and a No. 1 telescopic rod 9 is fixedly arranged on both sides of the lower end surface of the connecting plate 8, and a placing mechanism 7 is fixedly arranged on the lower end surfaces of the two No. 1 telescopic rods 9;

[0043] The first telescopic rod 9 adopts a spring telescopic rod structure, which can be retracted when in use. When the placement mechanism 7 vibrates up and down as a whole, the retractability of the first telescopic rod 9 can ensure its smooth up and down vibration movement;

[0044] The air-drying mechanism 1 includes two first mounting plates 101 and two second mounting plates 102. A plurality of hair dryers 103 are installed on the inner wall of the second mounting plate 102. A conduit is installed inside both the two first mounting plates 101 and the two second mounting plates 102, and one end of the conduit is connected to the output end of the hair dryer 2. Among them, the hair dryer 2 adopts a blower structure to blow air into the conduit, and the gas blows along the conduit to the hair dryer 103 to perform multi-directional air-drying treatment on the nozzle body 11 located in the middle of the plurality of hair dryers 103.

[0045] The surface impurity removal mechanism 5 includes an outer cylinder 502. A connecting cylinder 501 is rotatably sleeved on the upper end of the outer wall of the outer cylinder 502. A filter screen 505 and an activated carbon filter plate 507 are respectively installed at the upper end and the lower end inside the outer cylinder 502. An inner mesh bag 504 is installed at the upper end of the filter screen 505, and a turbine 506 is installed between the filter screen 505 and the activated carbon filter plate 507. The inner mesh bag 504 adopts a stainless steel microporous mesh bag structure to better filter smaller floating impurities, and the lower filter screen 505 and the activated carbon filter plate 507 perform secondary filtering and odor removal treatment to ensure the quality of the cleaning liquid.

[0046] The placing mechanism 7 includes a connecting handle 701, a placing frame 702, a chassis 703, an internal gear disk 704 and two second telescopic rods 705. A pushing block 13 is installed on the upper end surface of the internal gear disk 704. Clamping mechanisms 10 are installed at the front and rear ends of the bottom surface inside the placing frame 702. Rolling balls 12 are installed on the lower end surface of the placing frame 702. The clamping mechanism 10 includes two clamping blocks 1001, two first support blocks 1002, a housing 1003, two connecting springs 1004, two bottom plates 1005, a positioning rod 1006, two iron blocks 1007 and two second support blocks 1009.

[0047] Specifically, two clamping mechanisms 10 are provided in the placing mechanism 7, so that the device can simultaneously perform rapid cleaning treatment on two nozzle bodies 11. An ultrasonic generator is installed inside the cleaning tank 6, and the surface impurities of the nozzle body 11 are quickly cleaned by using ultrasonic oscillation cleaning.

[0048] Refer to Figure 1 、 Figure 3 and Fig.10 , both of the two first mounting plates 101 are L-shaped and the second mounting plate 102 is C-shaped. The number of hair dryers 103 provided in the second mounting plate 102 at the lower end of the same first mounting plate 101 is four, and the four hair dryers 103 are respectively located on both inner walls and both sides of the rear wall of the C-shaped second mounting plate 102. A first driving motor 15 is embedded on one side inside the top plate 4. A driving screw 16 is fixedly provided at the output end of the first driving motor 15. A moving block 17 is externally threaded and sleeved on the driving screw 16. The moving block 17 is horizontally slidably clamped inside the top plate 4. The top end of the electric push rod 3 is fixedly connected to the bottom end of the moving block 17.

[0049] Specifically, after the cleaning of the nozzle body 11 is completed, it is taken out of the cleaning liquid in the cleaning tank 6, and the No. 1 driving motor 15 is used to drive the driving screw 16 to rotate. At this time, the moving block 17 with the outer thread sleeve is laterally displaced and drives the electric push rod 3 at the lower end to be laterally displaced. At this time, the placement mechanism 7, the clamping mechanism 10 and the nozzle body 11 clamped on the inner side of the clamping mechanism 10 connected at the lower end are synchronously displaced laterally to move them to the middle of the multiple blowing heads 103 on the inner side of the blowing mechanism 1, and then the hair dryer 2 blows and uses the blowing head 103 to blow and dry the nozzle body 11.

[0050] Reference Figure 1 , Figure 8 and Fig. 9 A positioning plate is fixedly provided at the upper end of one side of the inner wall of the cleaning tank 6, a connecting tube 501 is threadedly sleeved on the positioning plate, an outer tube 502 passes through the positioning plate, an inner net bag 504 is located at the upper end of the filter screen 505 inside the outer tube 502 and can be removed and taken out, a servo motor is provided at the lower end of the turbine 506 and the output end of the servo motor is connected to the shaft core of the turbine 506;

[0051] Specifically, during use, since the position of the positioning plate is fixed, the threaded knob of the connecting tube 501 is fixed on the positioning plate, and since the connecting tube 501 is rotatably sleeved on the outer tube 502, the outer tube 502 is installed on the positioning plate and the bottom end is clamped in the placement groove at the bottom end of the cleaning tank 6. At this time, the internal turbine 506 generates suction after rotation, and because the opening of the upper end surface of the outer tube 502 is always located below the liquid level inside the cleaning tank 6, a water outlet 503 is fixedly provided on one side of the outer wall of the outer tube 502 near the lower end; at this time, the liquid on the upper surface of the cleaning tank 6 will be continuously sucked into the outer tube 502, and filtered and collected for multiple times through the inner net bag 504, the filter net 505 and the activated carbon filter plate 507, thereby reducing the residual impurities in the liquid in the cleaning tank 6 and reducing the adhesion and pollution of residual impurities when the nozzle body 11 is moved out of the liquid surface.

[0052] Reference Fig.10 and Fig.12 The bottom end surface of the cleaning tank 6 is provided with two grooves and both sides of the inner wall of the groove are embedded with electromagnets 21, the lower end of the positioning rod 1006 is embedded in the groove and the iron blocks 1007 on both sides are connected to the electromagnets 21;

[0053] Specifically, when the positioning rod 1006 is embedded in the groove at the lower end, the electromagnets 21 on both sides of the groove are energized to generate magnetic attraction. At this time, the iron blocks 1007 on both sides of the positioning rod 1006 are attracted and move outward and then get stuck in the groove to complete the auxiliary limiting fixing effect. When the electromagnet 21 is powered off, the telescopic spring 10011 connected to one side of the iron block 1007 generates a pulling force to pull the iron block 1007 back, thereby achieving an automatic reset effect.

[0054] Reference Figure 4 , Figure 5 , Fig.10 and Fig.11 , a No. 2 driving motor 18 is installed on one side of the bottom end surface of the placement frame 702, a driving shaft 19 is fixedly provided at the output end of the No. 2 driving motor 18, a driving gear 20 is fixedly provided at the lower end of the driving shaft 19, the driving gear 20 is meshed with the inner toothed disc 704, and there are three pushing blocks 13 at the upper end of the inner toothed disc 704 and they are arranged around the upper end of the inner toothed disc 704 in an equidistant circle, the inner toothed disc 704 is rotatably arranged inside the chassis 703, the lower ends of the two No. 2 telescopic rods 705 are respectively fixedly provided on both sides of the upper end surface of the chassis 703 and the upper ends of the two No. 2 telescopic rods 705 are fixedly connected to the placement frame 702, the connecting handle 701 is fixedly provided at the midpoint of the upper end of the placement frame 702 and is connected to the two No. 1 telescopic rods 9, and two through holes 14 are provided on the chassis 703;

[0055] Specifically, when in use, the No. 2 driving motor 18 drives the driving shaft 19 to rotate, and the driving shaft 19 drives the driving gear 20 at the lower end to rotate, and the driving gear 20 drives the inner gear disk 704 to rotate. At this time, the multiple pushing blocks 13 at the upper end of the inner gear disk 704 rotate accordingly, and the multiple pushing blocks 13 will continuously generate an extrusion thrust on the rolling ball 12 when rotating to make it move upward, and after the pushing blocks 13 leave the rolling ball 12, the upper end of the placement frame 702 falls again, thereby forming a repeated up and down shaking effect, and the No. 1 telescopic rod 9 and the No. 2 telescopic rod 705 are set with a spring telescopic rod structure so that they can provide auxiliary contraction effect when the placement frame 702 moves up and down. At the same time, the lower end of the clamping mechanism 10 is provided with a connecting spring 1004, which also performs a contraction and recovery function when the placement frame 702 moves up and down, thereby realizing the shaking-off function of the surface impurities of the entire placement frame 702 and the upper half of the clamping mechanism 10 and the nozzle body 11 after repeated up and down vibrations.

[0056] Reference Figure 4 , Figure 5 and Fig.10 The number of rolling balls 12 is three and they are arranged in a circle with equal spacing at the lower end of the placement frame 702. The rolling balls 12 include two linkage plates 1201 and rolling balls 1202. The two linkage plates 1201 are fixedly arranged at the lower end of the placement frame 702. The rolling balls 1202 are rotatably arranged between the two linkage plates 1201 and are pushed by the pushing block 13.

[0057] Specifically, the ball 1202 is rotatably set between two linkage plates 1201, and the linkage plate 1201 is installed at the lower end of the placement frame 702 so that it moves up and down synchronously with the placement frame 702, and the pushing block 13 adopts a right-angled trapezoidal structure and its inclined cross-section continuously contacts and squeezes the ball 1202, thereby pushing the ball 1202 up and down.

[0058] Reference Figure 1 , Figure 2 , Figure 6 , Figure 7 , Fig.10 and Fig.12 , two No. 1 support blocks 1002 are fixedly arranged at the front and rear ends of the upper end of the housing 1003, the two clamping blocks 1001 are respectively located on both sides of the housing 1003 and are rotatably connected to the No. 1 support block 1002 through the No. 1 shaft rod 1008, and the front ends of the two clamping blocks 1001 are provided with a long strip movable groove at one end away from the No. 1 support block 1002, and a No. 2 shaft rod 10010 is slidably arranged in the movable groove, and the two No. 2 shaft rods 10010 are rotatably arranged at the two No. 2 shaft rods 10010 at both ends. At both ends of the No. 1 support block 1009, the positioning rod 1006 is fixedly arranged at the lower end of the No. 2 support block 1009, the two connecting springs 1004 are respectively installed on both sides of the lower end surface of the housing 1003 and the two bottom plates 1005 are respectively fixedly connected to the lower ends of the two connecting springs 1004, the two iron blocks 1007 are respectively embedded in the lower ends of both sides of the positioning rod 1006 and connected to the positioning rod 1006 through the telescopic spring 10011, and the nozzle body 11 is clamped between the two clamping blocks 1001;

[0059] Specifically, when in use, the nozzle body 11 is first placed between the two clamping blocks 1001. The lower ends of the two clamping blocks 1001 are connected to the No. 2 support block 1009 through the No. 2 shaft rod 10010, and the positioning rod 1006 at the lower end of the No. 2 support block 1009 droops under the action of its own gravity, pulling the No. 2 support block 1009 downward. The downward movement of the No. 2 support block 1009 drives the No. 2 shaft rod 10010 at both ends to move in the long movable groove of the clamping block 1001. The long movable groove is inclined so that the No. 2 shaft rod 10010 pulls the clamping block 1001 during the downward movement, and the clamping block 1001 is rotatably connected to the No. 1 shaft rod 1008 to make it rotate, thereby completing the clamping and fixing effect of the nozzle body 11.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nozzle cleaning device for additive manufacturing of plastic parts, comprising a cleaning tank (6) and an electric push rod (3), characterized in that: At the midpoint of the upper end face of the cleaning tank (6), a top plate (4) is fixedly arranged. On one side of the upper end face of the top plate (4), a hair dryer (2) is fixedly arranged. On the front end face and the rear end face of the top plate (4) at the same side position, a drying mechanism (1) is fixedly arranged. On one side of the inner bottom end face of the cleaning tank (6), a surface impurity removing mechanism (5) is installed. At the lower end of the electric push rod (3), a connecting plate (8) is fixedly arranged. On both sides of the lower end face of the connecting plate (8), a first telescopic rod (9) is fixedly arranged. At the lower end faces of the two first telescopic rods (9), a placing mechanism (7) is fixedly arranged; The drying mechanism (1) includes two first mounting plates (101) and two second mounting plates (102). Inside the inner wall of the second mounting plate (102), a plurality of blowing heads (103) are installed. Inside the two first mounting plates (101) and the two second mounting plates (102), conduits are installed and one end of the conduit is connected to the output end of the hair dryer (2); The surface impurity removing mechanism (5) includes an outer cylinder (502). At the upper end of the outer wall of the outer cylinder (502), a connecting cylinder (501) is rotatably sleeved. At the upper end and the lower end inside the outer cylinder (502), a filter screen (505) and an activated carbon filter plate (507) are respectively installed. At the upper end of the filter screen (505), an inner mesh bag (504) is installed. Between the filter screen (505) and the activated carbon filter plate (507), a turbine (506) is installed; The placing mechanism (7) includes a connecting handle (701), a placing frame (702), a chassis (703), an internal gear disk (704) and two second telescopic rods (705). On the upper end face of the internal gear disk (704), a pushing block (13) is installed. At the front and rear ends of the inner bottom end face of the placing frame (702), a clamping mechanism (10) is installed. At the lower end face of the placing frame (702), rolling balls (12) are installed; The clamping mechanism (10) includes two clamping blocks (1001), two first support blocks (1002), a housing (1003), two connecting springs (1004), two bottom plates (1005), a positioning rod (1006), two iron blocks (1007) and two second support blocks (1009).

2. A nozzle cleaning device for additive manufacturing of plastic parts according to claim 1, characterized in that: Both of the two first mounting plates (101) are L-shaped and the second mounting plate (102) is C-shaped. The number of blowing heads (103) arranged inside the second mounting plate (102) at the lower end of the same first mounting plate (101) is four. The four blowing heads (103) are respectively located at both sides of the inner walls of the two sides and the two sides of the rear wall of the C-shaped second mounting plate (102).

3. The device for cleaning a nozzle for additive manufacturing of plastic parts according to claim 1, characterized in that: At the upper end of one side of the inner wall of the cleaning tank (6), a positioning plate is fixedly arranged. The connecting cylinder (501) is threadedly sleeved on the positioning plate. The outer cylinder (502) penetrates through the positioning plate. The inner mesh bag (504) is located at the upper end of the filter screen (505) inside the outer cylinder (502) and can be detachably taken out. At the lower end of the turbine (506), a servo motor is arranged and the output end of the servo motor is connected to the shaft core of the turbine (506).

4. The device for cleaning a nozzle for additive manufacturing of plastic parts according to claim 1, characterized in that: The opening of the upper end surface of the outer cylinder (502) is located at a level that is always lower than the liquid level inside the cleaning tank (6), and a water outlet (503) is fixedly provided on one side of the outer wall of the outer cylinder (502) near the lower end.

5. The device for cleaning a nozzle for additive manufacturing of plastic parts according to claim 1, characterized in that: A No. 1 driving motor (15) is embedded in one side of the interior of the top plate (4); a driving screw (16) is fixedly arranged at the output end of the No. 1 driving motor (15); a moving block (17) is threadedly sleeved on the exterior of the driving screw (16); the moving block (17) is horizontally slidably clamped in the interior of the top plate (4); and the top end of the electric push rod (3) is fixedly connected to the bottom end of the moving block (17).

6. The device for cleaning a nozzle for additive manufacturing of plastic parts according to claim 1, characterized in that: The bottom end surface of the cleaning tank (6) is provided with two grooves and electromagnets (21) are embedded on both sides of the inner walls of the grooves. The lower end of the positioning rod (1006) is embedded in the grooves and the iron blocks (1007) on both sides are connected to the electromagnets (21).

7. The device for cleaning a nozzle for additive manufacturing of plastic parts according to claim 1, characterized in that: A second drive motor (18) is installed on one side of the bottom end surface of the placement frame (702); a drive shaft (19) is fixedly provided at the output end of the second drive motor (18); a drive gear (20) is fixedly provided at the lower end of the drive shaft (19); the drive gear (20) is meshed with the inner toothed disc (704); three push blocks (13) are arranged at the upper end of the inner toothed disc (704) in a circle with equal spacing; The plate (704) is rotatably arranged inside the chassis (703), the lower ends of the two No. 2 telescopic rods (705) are respectively fixedly arranged on both sides of the upper end surface of the chassis (703), and the upper ends of the lower ends of the two No. 2 telescopic rods (705) are fixedly connected to the placement frame (702), the connecting handle (701) is fixedly arranged at the midpoint of the upper end of the placement frame (702) and connected to the two No. 1 telescopic rods (9), and two through holes (14) are opened on the chassis (703).

8. The device for cleaning a nozzle for additive manufacturing of plastic parts according to claim 1, characterized in that: The number of the rolling balls (12) is three and they are arranged in a circle at equal intervals around the lower end of the placement frame (702). The rolling balls (12) include two linkage plates (1201) and rolling balls (1202). The two linkage plates (1201) are fixedly arranged at the lower end of the placement frame (702). The rolling balls (1202) are rotatably arranged between the two linkage plates (1201) and are pushed by the pushing block (13).

9. The device for cleaning a nozzle for additive manufacturing of plastic parts according to claim 1, characterized in that: The two No. 1 support blocks (1002) are fixedly arranged at the front and rear ends of the upper end of the housing (1003), the two clamping blocks (1001) are respectively located on both sides of the housing (1003) and are rotatably connected to the No. 1 support block (1002) through the No. 1 shaft rod (1008), the front end surfaces of the two clamping blocks (1001) are provided with a long strip movable groove at one end away from the No. 1 support block (1002), and a No. 2 shaft rod (10010) is slidably arranged in the movable groove, and the two ends of the two No. 2 shaft rods (10010) are respectively rotatably arranged on the two No. 2 support blocks (1003). The two ends of the block (1009), the positioning rod (1006) is fixedly arranged at the lower end of the second support block (1009), the two connecting springs (1004) are respectively installed on both sides of the lower end surface of the shell (1003) and the two bottom plates (1005) are respectively fixedly connected to the lower ends of the two connecting springs (1004), the two iron blocks (1007) are respectively embedded in the lower ends of the two sides of the positioning rod (1006) and connected to the positioning rod (1006) through the telescopic spring (10011), and the nozzle body (11) is clamped between the two clamping blocks (1001).

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