Industrial 3D printer nozzle assembly

Abstract

The invention relates to the technical field of 3D printing, in particular to an industrial 3D printer nozzle assembly which comprises a matching block, four first connecting strips are further fixedly connected to the interior of the matching block, a material guiding pipe is fixedly connected between every two first connecting strips, a plurality of cooling fins are fixedly connected to the outer wall of each material guiding pipe, a rectangular heating block is further arranged below each material guiding pipe, and the rectangular heating blocks are fixedly connected to the outer wall of the corresponding material guiding pipe. The rectangular heating block can heat linear materials, a trigger mechanism is further fixedly installed between the rectangular heating block and the material guide pipe, a nozzle is fixedly connected to the bottom of the rectangular heating block, the curved arc heating block is started to melt hardened materials in the nozzle, meanwhile, the moving ring descends to release the steel wire rope, and under the action of the spring, the linear materials are heated. The suction pipe forms negative pressure in the heating pipe and the nozzle through the matching pipe, molten waste is sucked out, blockages are removed in a suction mode, and the situation that the inner wall of the nozzle is directly damaged through a steel needle and other modes is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, in particular to an industrial 3D printer nozzle assembly. Background Art

[0002] In the application scenarios of industrial-grade 3D printing technology, nozzle clogging has always been a key bottleneck affecting production continuity and printing quality. Nozzle clogging occurs frequently. Traditional treatment methods often use rigid tools such as metal needles and wires for mechanical dredging. Although such methods can clear the blockage to a certain extent, they are very likely to scratch the inner wall of the nozzle during operation, resulting in aperture size deviation, which in turn affects subsequent printing accuracy and material extrusion uniformity, and even shortens the nozzle life, significantly increasing equipment maintenance costs.

[0003] Some current improvement plans attempt to prevent blockages by increasing printing temperatures or optimizing the feed structure. However, there is still a lack of effective means to deal with solidified material blockages. Some equipment uses high-pressure gas purging to clear blockages. However, this method cannot completely remove strongly adherent blockages and may blow debris into other components inside the nozzle, causing secondary failures. Simple and crude high-temperature burning treatments not only accelerate the fatigue aging of the nozzle metal material, but may also produce harmful gases, endangering operator health and environmental safety.

[0004] As the requirements for the precision and surface quality of 3D printed parts in high-end manufacturing fields such as aerospace and medical equipment continue to rise, the limitations of traditional nozzle blockage treatment technology have become increasingly prominent. How to efficiently remove blockages while protecting the integrity of the internal structure of the nozzle to the greatest extent has become a core problem that industrial-grade 3D printing technology urgently needs to break through. Developing a non-destructive and intelligent nozzle blockage treatment solution is of great significance to improving equipment reliability and production efficiency.

[0005] Chinese patent (publication number CN108927997A) discloses a 3D printing nozzle assembly, including a vertical tube, the top of the vertical tube is a closed end, a feed pipe arranged upwardly and fixedly connected to one side of the top of the vertical tube, an inner tube is fixedly installed at the bottom of the interior of the vertical tube, a vertically arranged movable tube is inserted at the bottom of the interior of the vertical tube, the outer part of the movable tube is provided with a sleeve arranged concentrically with the movable tube, the bottom end of the sleeve is fixedly connected to the movable tube through a tapered transition tube, the sleeve is sleeved on the outside of the vertical tube and threadedly connected with the vertical tube, the bottom ends of the inner tube and the movable tube are both provided with tapered ends, and a stirring mechanism is provided inside the vertical tube. The invention has the advantages of reasonable design and easy operation, the structure of the nozzle assembly is relatively flexible, convenient for corresponding adjustment, and convenient for practical use.

[0006] According to the above scheme, when the above scheme is used, the movable tube and the vertical tube are only detachably connected to facilitate cleaning or replacement of the movable tube. Two flexibly adjustable heating blocks are set on the outside of the vertical tube to promote material discharge. However, when the nozzle is clogged, it is impossible to automatically clean and unclog the nozzle in a timely manner. For this reason, we propose an industrial 3D printer nozzle assembly. Summary of the Invention

[0007] The object of the present invention is to provide an industrial 3D printer nozzle assembly to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An industrial 3D printer nozzle assembly includes a mating block, four first connecting bars fixedly connected to the interior of the mating block, a material guide tube fixedly connected between every two first connecting bars, a plurality of heat sinks fixedly connected to the outer wall of the material guide tube, a rectangular heating block disposed below the material guide tube, the rectangular heating block capable of heating linear materials, and a trigger mechanism fixedly mounted between the rectangular heating block and the material guide tube;

[0010] A nozzle is fixedly connected to the bottom of the rectangular heating block, a suction mechanism is fixedly installed on the outer wall of the rectangular heating block for sucking out the hardened material clogged inside the nozzle, and a collection mechanism for collecting waste is also fixedly connected between the rectangular heating block and the nozzle.

[0011] As a further feature of this solution, the trigger mechanism includes a heating tube, which is fixedly connected to the inside of the rectangular heating block. The bottom of the heating tube is fixedly connected to a connecting tube, the upper end of the heating tube is fixedly connected to the material guide tube, and the top of the inner wall of the heating tube is fixedly connected to a first folded corrugated sleeve with a reset function.

[0012] As a further feature of this solution, the bottom end of the inner wall of the first folding corrugated sleeve is fixedly connected to a plurality of connecting round rods, the outer wall of each connecting round rod is slidably inserted into the interior of the heating tube, a trigger circular plate is fixedly connected between all the connecting round rods, and the upper end of the rectangular heating block is fixedly connected to a plurality of second connecting strips.

[0013] As a further feature of this solution, each of the second connecting strips is slidably connected to a triangular abutment block with a reset function, and each of the second connecting strips is slidably connected to a push block at one end close to the trigger circular plate, and the push block and the triangular abutment block are fixedly connected by a second steel wire rope.

[0014] As a further feature of this solution, the suction mechanism includes two arc-shaped heating blocks with a reset function, each of the arc-shaped heating blocks is slidably connected to the inside of the rectangular heating block, and multiple sliding rods are slidably connected to the inside of the rectangular heating block, each of the sliding rods is fixedly connected to the upper end of the corresponding arc-shaped heating block, and a movable ring is fixedly connected between all the sliding rods, and the bottom of the movable ring abuts against the upper end of each triangular abutting block.

[0015] As a further feature of this solution, the outer wall of the rectangular heating block is fixedly connected to a plurality of suction tubes, and the interior of each suction tube is slidably connected to a movable circular plate. Each movable circular plate is fixedly connected to the movable ring through a first steel wire rope, and the movable circular plate is fixedly connected to the top of the inner wall of the suction tube through a third spring.

[0016] As a further feature of this solution, a heating ring is fixedly connected to the inner wall of the suction tube, each suction tube is fixedly connected to the heating tube through a matching tube, and the upper end of the rectangular heating block is fixedly connected to a first electric retracting arm.

[0017] As a further feature of this solution, the collection mechanism includes a recovery pipe, the inner wall of the recovery pipe is also fixedly connected to a heating ring, and the bottom of the rectangular heating block is fixedly connected to a contraction air tube.

[0018] As a further feature of this solution, the output end of the contraction air pipe is fixedly connected to a movable plate, and a connecting port and a connecting groove are provided on the outer wall of the movable plate. The connecting groove is connected to the recovery pipe through a ceramic fiber hose.

[0019] As a further feature of this solution, the outer wall of the contraction air tube is fixedly connected to a first pressure relief valve, the upper end of the rectangular heating block is fixedly connected to a connecting arm and a third folded bellows sleeve, the upper end of the third folded bellows sleeve is fixedly connected to the bottom of the movable ring, the upper end of the third folded bellows sleeve is fixedly connected to a second pressure relief valve, and the outer wall of the connecting arm is fixedly connected to a contact rod.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. When the present invention is used, when the nozzle is clogged, the material in the heating tube accumulates and increases. The first folded corrugated sleeve is squeezed and drives the connecting round rod upward, thereby pushing the trigger circular plate upward. The trigger circular plate abuts and lifts the push block. The push block pulls the triangular abutting block through the wire rope to break away from the abutment with the moving ring. The spring drives the moving ring downward, and the sliding rod drives the curved arc heating block to descend and fit the outer wall of the nozzle. The curved arc heating block is activated to melt the hardened material in the nozzle. At the same time, the moving ring descends to release the wire rope. Under the action of the spring, the suction pipe forms a negative pressure on the heating tube and the inside of the nozzle through the matching pipe, sucking out the melted waste material. The blockage is removed by suction, avoiding direct damage to the inner wall of the nozzle by means of a steel needle or the like.

[0022] 2. When the present invention is used, after the waste enters the suction pipe, the first electric retraction arm is started to lift the moving ring. The moving ring pulls the moving circular plate through the first steel wire rope, so that the waste in the suction pipe enters the heating pipe through the matching pipe. At the same time, the moving ring moves upward to pull the third folded corrugated sleeve to suck the contraction air pipe. Because the openings of the second and first pressure relief valves are small, the third folded corrugated sleeve resets slowly, and the suction of the contraction air pipe is continuously maintained to maintain it in a contracted state. The contraction of the contraction air pipe drives the connecting groove to connect with the connecting pipe, and then the waste in the heating pipe enters the recovery pipe through the connecting pipe and the connecting groove in turn, thereby realizing waste recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A top view of an industrial 3D printer nozzle assembly.

[0024] Figure 2 A disassembled diagram of an industrial 3D printer nozzle assembly.

[0025] Figure 3 A schematic diagram of the position structure of a rectangular heating block in an industrial 3D printer nozzle assembly.

[0026] Figure 4 This is a schematic diagram of the nozzle position structure in an industrial 3D printer nozzle assembly.

[0027] Figure 5 A schematic diagram of the internal structure of a heating tube in an industrial 3D printer nozzle assembly.

[0028] Figure 6 A schematic diagram of the position structure of a sliding rod in an industrial 3D printer nozzle assembly.

[0029] Figure 7 This is a schematic diagram of the internal structure of the first folded corrugated sleeve in an industrial 3D printer nozzle assembly.

[0030] Figure 8 This is a schematic diagram of the position structure of the push block in an industrial 3D printer nozzle assembly.

[0031] Figure 9 A schematic diagram of the internal structure of a suction tube in an industrial 3D printer nozzle assembly.

[0032] Figure 10 A schematic diagram of the internal structure of a recovery tube in an industrial 3D printer nozzle assembly.

[0033] Figure 11 This is a schematic diagram of the location structure of the connection slot in an industrial 3D printer nozzle assembly.

[0034] In the figure: 1. Matching block; 2. Protective tube; 3. Cooling fan; 4. Nozzle protective cover; 5. First connecting bar; 6. Connecting groove; 7. Heat sink; 8. Abutment wheel; 9. Rectangular heating block; 10. Nozzle; 11. Heating tube; 12. Recovery tube; 14. Material guide tube; 15. Curved heating block; 16. Moving ring; 17. Sliding rod; 18. Second spring; 19. First electric retracting arm; 20. First folding corrugated sleeve; 21. Moving circular plate;

[0035] 22. First steel wire rope; 23. Second connecting bar; 24. Third spring; 25. Trigger plate; 26. Connecting rod; 27. Connecting tube; 28. Second steel wire rope; 29. Fourth spring; 30. Triangular abutment block; 31. Second electric retracting arm; 32. Pushing block; 34. Suction tube; 35. Coupling tube; 36. Ventilation tube; 37. Second folding bellows; 39. Connecting arm; 40. Abutment rod;

[0036] 42. Second pressure relief valve; 43. Third folding bellows; 44. Contraction air tube; 45. Moving plate; 46. Connecting port; 47. Servo motor; 101. Suction mechanism; 201. Trigger mechanism; 301. Collection mechanism. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] Example 1: Please refer to Figures 1 to 4As shown, in an embodiment of the present invention, an industrial 3D printer nozzle assembly includes a matching block 1, two protective tubes 2 are fixedly connected to the interior of the matching block 1, the outer wall of the protective tube 2 is provided with multiple air vents, and the bottom of the cooling fan 3 is fixedly connected to a nozzle protection cover 4 by bolts. Four first connecting bars 5 are also fixedly connected to the interior of the matching block 1, and a material guide tube 14 is fixedly connected between every two first connecting bars 5. Each material guide tube 14 is located inside the corresponding protective tube 2. The outer wall of the material guide tube 14 is fixedly connected to a plurality of heat sinks 7. The plurality of heat sinks 7 are arranged in an array from top to bottom on the outer wall of the material guide tube 14. The heat sinks 7 and the material guide tube 14 are both made of copper, which has good corrosion resistance and high temperature resistance.

[0039] A rectangular heating block 9 is also provided below the material guide tube 14, and a trigger mechanism 201 is fixedly installed between the rectangular heating block 9 and the material guide tube 14. A nozzle 10 is fixedly connected to the bottom of the rectangular heating block 9, and the nozzle 10 is "conical". A suction mechanism 101 is fixedly installed on the outer wall of the rectangular heating block 9 for sucking the hardened material blocked inside the nozzle 10, and a collection mechanism 301 for collecting waste is also fixedly connected between the rectangular heating block 9 and the nozzle 10.

[0040] Example 2: Please refer to Figures 2 to 9 As shown, the trigger mechanism 201 includes a heating tube 11, which is fixedly connected to the inside of the rectangular heating block 9. The bottom of the heating tube 11 is fixedly connected to a connecting tube 27. The upper end of the heating tube 11 is fixedly connected to the guide tube 14. The top of the inner wall of the heating tube 11 is fixedly connected to a first folding corrugated sleeve 20 with a reset function. The first folding corrugated sleeve 20 is fixedly connected to a first spring. The first folding corrugated sleeve 20 is fixedly connected to a plurality of steel rings. The first folding corrugated sleeve 20 is made of tinfoil, which can withstand high temperatures above 600 degrees Celsius. The corrugated state can achieve better folding and extension. The bottom end of the inner wall of the first folded corrugated sleeve 20 is fixedly connected to a plurality of connecting rods 26. The plurality of connecting rods 26 are circumferentially distributed inside the first folded corrugated sleeve 20. The outer wall of each connecting rod 26 is slidably penetrated into the interior of the heating tube 11. A trigger circular plate 25 is fixedly connected between all the connecting rods 26. The trigger circular plate 25 is sleeved on the outside of the guide tube 14. The upper end of the rectangular heating block 9 is fixedly connected to a plurality of second connecting strips 23. The plurality of second connecting strips 23 are circumferentially distributed on the upper end of the rectangular heating block 9.

[0041] The interior of each second connecting bar 23 is slidably connected to a triangular abutting block 30 with a reset function. The cross-section of the triangular abutting block 30 is "triangular". Specifically, a sliding opening is opened inside the second connecting bar 23, and the triangular abutting block 30 is slidably connected to the inner wall of the sliding opening. The triangular abutting block 30 and the inner wall of the sliding opening are fixedly connected by a fourth spring 29. The end of each second connecting bar 23 close to the trigger circular plate 25 is slidably connected to a pushing block 32. The pushing block 32 and the triangular abutting block 30 are fixedly connected by a second steel wire rope 28. The outer wall of the second steel wire rope 28 slides through the interior of the sliding opening. The trigger circular plate 25 is located below all the pushing blocks 32.

[0042] The upper end of one of the heat sinks 7 is rotatably connected to two abutment wheels 8 through a rotating shaft. The upper end of the heat sink 7 is fixedly connected to a servo motor 47. The output end of the servo motor 47 is fixedly connected to the outer wall of a corresponding abutment wheel 8. The outer walls of the two abutment wheels 8 are fixedly connected to rubber sleeves. When the servo motor 47 drives one of the abutment wheels 8 to rotate, the two abutment wheels 8 are in a state of abutment with each other. At this time, the two abutment wheels 8 will rotate in opposite directions, and the printing wire is placed between the two abutment wheels 8. The rubber sleeve can enhance the friction between the abutment wheels 8 and the printing wire, and the abutment wheels 8 will increase the pulling force on the printing wire. The interior of the guide tube 14 is also fixedly connected to a rubber coil. The printing wire passes through the interior of the rubber coil. The rubber coil can prevent the molten material inside the heating tube 11 from overflowing from the interior of the guide tube 14;

[0043] The suction mechanism 101 includes two arc-bent heating blocks 15 with a reset function, each of which is slidably connected to the inside of the rectangular heating block 9. The two arc-bent heating blocks 15 are symmetrically distributed front and back inside the rectangular heating block 9. The arc-bent heating blocks 15 are "arc-shaped", and the inside of the rectangular heating block 9 is slidably connected to a plurality of sliding rods 17. Specifically, the plurality of sliding rods 17 are circumferentially distributed inside the rectangular heating block 9, and each sliding rod 17 is fixedly connected to the upper end of the corresponding arc-bent heating block 15. A second spring 18 is fixedly connected between each sliding rod 17 and the rectangular heating block 9, and each second spring 18 is sleeved on the outer wall of the corresponding sliding rod 17. At this time, the second spring 18 is in a stretched and force-storing state, and a moving ring 16 is fixedly connected between all the sliding rods 17. The moving ring 16 is located directly above the rectangular heating block 9;

[0044] The bottom of the movable ring 16 and the upper end of each triangular abutting block 30 are abutted against each other, and a plurality of suction tubes 34 are fixedly connected to the outer wall of the rectangular heating block 9. The interior of each suction tube 34 is slidably connected to a movable circular plate 21. Each movable circular plate 21 is fixedly connected to the movable ring 16 through a first steel wire rope 22. The outer wall of each first steel wire rope 22 is slidably passed through the interior of the suction tube 34 and the rectangular heating block 9. The movable circular plate 21 is fixedly connected to the top of the inner wall of the suction tube 34 by a third spring 24. At this time, the third spring 24 is in a stretched and force-accumulating state, and the inner wall of the suction tube 34 is also fixedly connected to the heating ring;

[0045] The third spring 24 is fixedly connected to the movable circular plate 21 via a second folded corrugated sleeve 37. The bottom of the second folded corrugated sleeve 37 is fixedly connected to a vent pipe 36. The second folded corrugated sleeve 37 and the first folded corrugated sleeve 20 are made of the same tinfoil material, and a steel ring is also fixedly connected inside. The heating ring can effectively prevent the melted waste from cooling and hardening inside the suction pipe 34. The second electric retraction arm 31 is fixedly connected to the inside of the second folded corrugated sleeve 37. Each suction pipe 34 is fixedly connected to the heating pipe 11 through a matching pipe 35. The upper end of the rectangular heating block 9 is fixedly connected to the first electric retraction arm 19, and the first electric retraction arm 19 is located below the movable ring 16.

[0046] See also Figures 3 and 4 、 Figures 10 and 11 As shown, the collecting mechanism 301 includes a recovery pipe 12, a discharge port is provided at the bottom of the recovery pipe 12, and a mounting cover is threadedly connected to the outer wall of the discharge port. When the inside of the recovery pipe 12 is discharged, it is only necessary to rotate the mounting cover to discharge the inside of the recovery pipe 12. The inner wall of the recovery pipe 12 is also fixedly connected to a heating ring, and the bottom of the rectangular heating block 9 is fixedly connected to a contraction air pipe 44, and the output end of the contraction air pipe 44 is fixedly connected to a movable plate 45. The outer wall of the movable plate 45 is provided with a connecting port 46 and a connecting groove 6, and the connecting groove 6 and the connecting port 46 are symmetrically distributed on the outer wall of the movable plate 45. The connecting pipe 27 and the connecting port 46 are connected to the nozzle 10, and the connecting groove 6 is connected to the recovery pipe 12 through a ceramic fiber hose;

[0047] The upper end of the rectangular heating block 9 is fixedly connected to a connecting arm 39 and a third folded bellows sleeve 43. The upper end of the third folded bellows sleeve 43 is fixedly connected to the bottom of the movable ring 16. The third folded bellows sleeve 43 is made of rubber. A plurality of connecting legs are fixedly connected between the third folded bellows sleeve 43 and the rectangular heating block 9. The connecting legs can prevent direct contact between the rectangular heating block 9 and the third folded bellows sleeve 43. The upper end of the third folded bellows sleeve 43 is fixedly connected to the second pressure relief valve 42. The outer wall of the connecting arm 39 is fixedly connected to an abutment rod 40. The abutment rod 40 is located directly above the second pressure relief valve 42.

[0048] See also Figures 5 to 11As shown, specifically, when the recycled waste enters the recycling pipe 12, melted materials will remain inside the ceramic fiber hose and the matching pipe 35, and the second electric retraction arm 31 is started to retract quickly. The gas inside the second folding corrugated sleeve 37 will quickly enter the matching pipe 35, and then enter the heating pipe 11 from the matching pipe 35. Note that at this time, since it is in the link of recycling waste, the connecting groove 6 is connected to the connecting pipe 27, and the gas inside the heating pipe 11 will enter the connecting groove 6 from the connecting pipe 27, and then enter the ceramic fiber hose from the connecting groove 6. The high-speed gas will blow all the remaining materials into the recycling pipe 12 for recycling.

[0049] The working principle of the present invention is:

[0050] When the present invention is used, the free end of the printing wire is passed through the guide tube 14 so that the free end of the printing wire is located inside the heating tube 11. At this time, the rectangular heating block 9 is started to heat the heating tube 11. At this time, the printing wire will melt inside the heating tube 11. The melted material inside the heating tube 11 will pass through the connecting tube 27, through the communication port 46 and the inside of the nozzle 10, and be discharged from the nozzle 10. The cooling fan 3 can cool the portion of the printing wire located between all the heat sinks 7 to prevent the melting of the printing wire from sticking to the inner wall of the guide tube 14.

[0051] When the nozzle 10 is clogged, the material inside the heating tube 11 gradually increases, the first folded corrugated sleeve 20 will be compressed, the first folded corrugated sleeve 20 will drive all the connecting rods 26 to move upward, the connecting rods 26 drive the trigger circular plate 25 to move upward, when the trigger circular plate 25 moves upward and abuts against the bottom of the push block 32 and lifts it upward, the push block 32 will pull the triangular abutment block 30 through the second steel wire rope 28, when all the triangular abutment blocks 30 are out of contact with the bottom of the moving ring 16, the second spring 18 will drive the moving ring 16 to move downward, and when the moving ring 16 moves downward, it will pass through the sliding rod 17 The two arc-bending heating blocks 15 are driven to move downward. At this time, the outer wall of the nozzle 10 abuts against the two arc-bending heating blocks 15. The arc-bending heating blocks 15 are started, and the arc-bending heating blocks 15 heat the nozzle 10. The hardened material inside the nozzle 10 is gradually heated and melted. As the moving ring 16 descends, the first steel wire rope 22 is released, and the third spring 24 pulls the moving circular plate 21 and the second folded corrugated sleeve 37. At this time, the inside of the suction pipe 34 performs a suction working motion on the inside of the heating pipe 11 through the matching pipe 35, so that the inside of the heating pipe 11 and the nozzle 10 generates a negative pressure state, and the melted waste is sucked out;

[0052] At the same time, when the movable ring 16 descends, it compresses the third folded bellows 43. At this time, the gas inside the third folded bellows 43 will enter the contraction air pipe 44. Since the space inside the contraction air pipe 44 is very small, the excess gas will be discharged through the second pressure relief valve 42 and the first pressure relief valve.

[0053] When the movable circular plate 21 is reset under the action of the third spring 24, the melted waste material will enter the interior of the heating tube 11 from the nozzle 10 through the communication port 46 and the connecting tube 27, and then enter the interior of the suction tube 34 from the heating tube 11 through the matching tube 35. Since there is a space between the movable circular plate 21 and the bottom end of the inner wall of the suction tube 34, the material is prevented from splashing onto the bottom of the movable circular plate 21 when entering the suction tube 34.

[0054] When the waste has entered the suction pipe 34, the first electric retraction arm 19 is started to lift the moving ring 16, and the moving ring 16 pulls the moving circular plate 21 downward through the first steel wire rope 22. At this time, the waste inside the suction pipe 34 will enter the heating pipe 11 through the matching tube 35. While the moving ring 16 moves upward, it will also pull the third folded corrugated sleeve 43. At this time, the third folded corrugated sleeve 43 will suck the inside of the contraction air pipe 44. Since the internal space of the contraction air pipe 44 is small, the contraction air pipe 44 will shrink rapidly. At this time, since the openings of the second pressure relief valve 42 and the first pressure relief valve are small, the third folded corrugated sleeve 43 resets slowly, and the contraction air pipe 44 is always in a suction state, and the contraction air pipe 44 can also be always in a contracted state. The contraction of the contraction air pipe 44 will also drive the connecting groove 6 to connect with the connecting pipe 27. In this way, based on the above, when the waste enters the heating tube 11, it will also enter the connecting groove 6 through the connecting tube 27, and then enter the recovery tube 12 from the connecting groove 6. When the waste completely enters the recovery tube 12, the first electric retraction arm 19 is started to drive the movable ring 16 to continue to move upward, and the movable ring 16 drives the third folded corrugated sleeve 43 to extend, so that the interior of the second pressure relief valve 42 abuts against the bottom of the abutment rod 40, increasing the air intake of the third folded corrugated sleeve 43, and the third folded corrugated sleeve 43 will quickly reset. When the movable ring 16 moves upward, it will also abut against the outer wall of the triangular abutment block 30. When the outer wall of the movable ring 16 disengages from the abutment with the outer wall of the triangular abutment block 30, the second spring 18 will drive the movable ring 16 to tightly abut against the upper end of the triangular abutment block 30, and the first electric retraction arm 19 resets and contracts to complete the discharge of the blockage.

[0055] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An industrial 3D printer nozzle assembly, comprising a matching block (1), characterized in that: Four first connecting bars (5) are fixedly connected to the interior of the matching block (1), a material guide tube (14) is fixedly connected between every two first connecting bars (5), a plurality of heat sinks (7) are fixedly connected to the outer wall of the material guide tube (14), a rectangular heating block (9) is provided below the material guide tube (14), the rectangular heating block (9) can heat the linear material, and a trigger mechanism (201) is fixedly installed between the rectangular heating block (9) and the material guide tube (14); The bottom of the rectangular heating block (9) is fixedly connected to a nozzle (10), the outer wall of the rectangular heating block (9) is fixedly installed with a suction mechanism (101) capable of sucking hardened material blocked inside the nozzle (10), and a collection mechanism (301) for collecting waste is also fixedly connected between the rectangular heating block (9) and the nozzle (10).

2. An industrial 3D printer nozzle assembly according to claim 1, characterized in that: The trigger mechanism (201) comprises a heating tube (11), the heating tube (11) being fixedly connected to the interior of a rectangular heating block (9), the bottom of the heating tube (11) being fixedly connected to a connecting tube (27), the upper end of the heating tube (11) being fixedly connected to a material guide tube (14), and the top end of the inner wall of the heating tube (11) being fixedly connected to a first folded corrugated sleeve (20) having a reset function.

3. An industrial 3D printer nozzle assembly according to claim 2, characterized in that: The bottom end of the inner wall of the first folding corrugated sleeve (20) is fixedly connected to a plurality of connecting round rods (26), the outer wall of each connecting round rod (26) is slidably inserted into the interior of the heating tube (11), a trigger circular plate (25) is fixedly connected between all the connecting round rods (26), and the upper end of the rectangular heating block (9) is fixedly connected to a plurality of second connecting bars (23).

4. An industrial 3D printer nozzle assembly according to claim 3, characterized in that: A triangular abutting block (30) with a reset function is slidably connected to the interior of each second connecting bar (23), and a pushing block (32) is slidably connected to one end of each second connecting bar (23) close to the trigger circular plate (25), and the pushing block (32) and the triangular abutting block (30) are fixedly connected via a second steel wire rope (28).

5. The industrial 3D printer nozzle assembly according to claim 1, characterized in that: The suction mechanism (101) includes two curved heating blocks (15) with a reset function, each of the curved heating blocks (15) is slidably connected to the inside of the rectangular heating block (9), and the inside of the rectangular heating block (9) is slidably connected to multiple sliding rods (17), each of the sliding rods (17) is fixedly connected to the upper end of the corresponding curved heating block (15), and a moving ring (16) is fixedly connected between all the sliding rods (17), and the bottom of the moving ring (16) is in contact with the upper end of each triangular abutting block (30).

6. The industrial 3D printer nozzle assembly according to claim 5, characterized in that: The outer wall of the rectangular heating block (9) is fixedly connected to a plurality of suction tubes (34), and the interior of each suction tube (34) is slidably connected to a movable circular plate (21). Each movable circular plate (21) is fixedly connected to the movable ring (16) via a first steel wire rope (22), and the movable circular plate (21) is fixedly connected to the top end of the inner wall of the suction tube (34) via a third spring (24).

7. An industrial 3D printer nozzle assembly according to claim 6, characterized in that: The inner wall of the suction tube (34) is also fixedly connected to a heating ring. Each of the suction tubes (34) is fixedly connected to the heating tube (11) via a matching tube (35). The upper end of the rectangular heating block (9) is fixedly connected to a first electric retracting arm (19).

8. The industrial 3D printer nozzle assembly according to claim 1, characterized in that: The collecting mechanism (301) comprises a recovery pipe (12), the inner wall of which is also fixedly connected to a heating ring, and the bottom of the rectangular heating block (9) is fixedly connected to a contraction air pipe (44).

9. The industrial 3D printer nozzle assembly according to claim 8, characterized in that: The output end of the contraction air pipe (44) is fixedly connected to a movable plate (45), and the outer wall of the movable plate (45) is provided with a communication port (46) and a connection groove (6), and the connection groove (6) is connected to the recovery pipe (12) through a ceramic fiber hose.

10. The industrial 3D printer nozzle assembly according to claim 9, characterized in that: The outer wall of the contraction air tube (44) is fixedly connected to a first pressure relief valve, the upper end of the rectangular heating block (9) is fixedly connected to a connecting arm (39) and a third folding corrugated sleeve (43), the upper end of the third folding corrugated sleeve (43) is fixedly connected to the bottom of the movable ring (16), the upper end of the third folding corrugated sleeve (43) is fixedly connected to a second pressure relief valve (42), and the outer wall of the connecting arm (39) is fixedly connected to an abutting rod (40).

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