3D printer with consumable recycling structure

Abstract

The invention discloses a 3D printer with a consumable recycling structure in the technical field of 3D printing, and the 3D printer comprises a printer body, a supporting rod is mounted on the side wall of the printer body, an extruder is mounted at the top end of the supporting rod, an air cooling machine is mounted in the middle of the supporting rod, and two connecting plates are arranged on the lower side of the air cooling machine through a clamping mechanism; clamping plates are fixedly mounted on the left sides of the upper ends and the lower ends of the two connecting plates correspondingly, the clamping mechanism is used for clamping the two sets of wires through the clamping plates when the ends of the two sets of wires make contact with each other, and two electric heating boxes are arranged on the left sides of the connecting plates through opening and closing mechanisms. And the opening and closing mechanism is used for driving the two electric heating boxes to be attached to each other and melting the wires when the clamping mechanism clamps the two sets of wires, an electric take-up machine is installed on the left side of the bottom end of the supporting rod, and the problem that an existing 3D printer of a consumable recycling structure cannot automatically splice the wires in the consumable recycling process is solved.

Description

Technical Field

[0001] This invention relates to the field of 3D printer technology, specifically to a 3D printer with a filament recycling structure. Background Technology

[0002] 3D printers have become a ubiquitous tool, providing rapid prototyping for industries such as manufacturing, medicine, and model making. During the printing process, a significant amount of material is wasted due to factors such as support issues, printing failures, and size adjustments. The waste material is shredded, melted, extruded, cooled, and wound into filaments by consumable recycling equipment, ultimately being processed into filaments for reuse.

[0003] In existing technologies, the waste generated during each printing process is processed by consumable recycling equipment to produce filaments of varying lengths. The processed filaments are generally short. When the filaments processed from the waste are reused, multiple sets of filaments need to be spliced ​​together into a complete long filament, which is very cumbersome and inconvenient for the use of consumables. Existing 3D printers with consumable recycling structures cannot automatically splice the filaments during the consumable recycling process.

[0004] Based on this, the present invention designs a 3D printer with a consumable recycling structure to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a 3D printer with a filament recycling structure that automatically splices filaments during the filament recycling process, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a 3D printer with a filament recycling structure, comprising a printer body, a support rod installed on the side wall of the printer body, an extruder installed at the top of the support rod, and an air cooler installed in the middle of the support rod. Two connecting plates are provided on the lower side of the air cooler via a clamping mechanism. Clamping plates are fixedly installed on the left side of both ends of the two connecting plates. The clamping mechanism is used to clamp the two sets of filaments together when their ends come into contact. Two electric heating boxes are provided on the left side of the connecting plates via an opening and closing mechanism. The opening and closing mechanism is used to drive the two electric heating boxes to come into contact with each other and melt the filaments when the clamping mechanism clamps the two sets of filaments. An electric take-up device is installed on the left side of the bottom end of the support rod.

[0007] As a further embodiment of the present invention, the clamping mechanism includes a support frame fixedly installed at the left end of the support rod, a connecting block slidably connected to the outer side of the support frame, the top end of the connecting block being connected to the top end of the support frame via a tension spring, an L-shaped plate fixedly installed at the right end of the middle of each connecting plate, the right end of each L-shaped plate passing through the connecting block and slidably connected thereto, the two L-shaped plates being connected by a compression spring, a locking mechanism being provided on the upper side of the L-shaped plate, the locking mechanism being used to drive the two connecting plates to stick together and fix them into a whole when the ends of the two sets of wires come into contact, and an unlocking mechanism being provided at the bottom end of the connecting plate, the unlocking mechanism being used to unlock the two connecting plates when the connecting plate can no longer move downwards;

[0008] As a further embodiment of the present invention, the locking mechanism includes a shaped frame fixedly installed at the front end of the connecting block. A pressing rod is rotatably connected to the rear left end of the shaped frame via a torsion spring. A deflection rod is rotatably connected to the top end of the pressing rod via a torsion spring. The left end of the deflection rod cannot be flipped downwards. A transmission rod is provided on the front side of the clamping plate on the upper side. The front end of the transmission rod passes through the shaped frame and is slidably connected to it. The rear left end of the transmission rod is wedge-shaped. Two pressing plates are provided on the rear right end of the transmission rod via a power storage mechanism. The power storage mechanism is used to drive the pressing plates to move a certain distance to the left when the transmission rod can no longer move to the left. A first support plate is fixedly installed at the bottom left end of the connecting block. A serpentine plate is slidably connected to the left end of the first support plate via a compression spring. The left end of the serpentine plate is tightly fitted with the two connecting plates. A push block is fixedly installed at the left end of the electric heating box on the front side. The rear end of the push block is inclined.

[0009] As a further embodiment of the present invention, the energy storage mechanism includes a second support plate fixedly installed at the top left end of the connecting block, a push plate fixedly installed at the rear right end of the transmission rod, a slide rod slidably connected to the middle of the push plate, an energy storage plate fixedly installed at the left end of the slide rod, the right ends of the two extrusion plates being fixedly connected to the energy storage plate, a J-shaped rod provided at the top end of the second support plate, the bottom left end of the J-shaped rod passing through the second support plate and fitting against the side wall of the energy storage plate, and the bottom right end of the J-shaped rod being wedge-shaped, and an extrusion block fixedly installed at the top rear end of the push plate;

[0010] As a further embodiment of the present invention, the unlocking mechanism includes a first guide plate fixedly installed at the front end of the serpentine plate, and a first guide rod fixedly installed on the left side of the bottom end of the support frame, the top end of the first guide rod corresponding to the left side of the top end of the first guide plate;

[0011] As a further embodiment of the present invention, the opening and closing mechanism includes an opening and closing rod with two connecting plates fixed on opposite sides. The outer sides of the opening and closing rod are slidably connected to opening and closing plates. The sidewalls of the opening and closing plates are connected to the connecting plates by tension springs. The left ends of the two opening and closing plates are respectively fixedly connected to two electric heating boxes. The right end of the opening and closing plate is provided with a separation mechanism. The separation mechanism is used to drive the opening and closing plate away from the connecting plate when the electric heating box moves downward to the middle of the support frame.

[0012] As a further embodiment of the present invention, the separation mechanism includes a second guide plate fixedly installed on the right end of the opening and closing plate, and two second guide rods fixedly installed on the left side of the bottom end of the support frame, the top ends of the second guide rods corresponding to the top ends of the second guide plates;

[0013] As a further embodiment of the present invention, a copper tube is fixedly installed in the middle of the electric heating box, the top end of the copper tube corresponds to the output end of the extruder, and the surface of the copper tube is hollowed out.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By setting up a clamping mechanism, when the end of another set of wires moves between the two electric heating boxes and contacts the end of the previous set of wires, the clamping mechanism drives the two adjacent clamping plates to move closer to each other. At this time, the two upper clamping plates clamp and fix the upper wires, and the two lower clamping plates clamp and fix the lower wires. This allows the lower wires to be pulled down synchronously when they are wound up again, and the ends of the two wires will not separate, thus facilitating the subsequent connection operation of the ends of the two wires.

[0016] 2. This invention, through the setting of an opening and closing mechanism, allows two connecting plates to approach each other, and through the opening and closing mechanism, two electric heating boxes clamp and fix the ends of the two filaments. At this time, the electric heating boxes start heating and gradually melt the ends of the two filaments, thereby achieving automatic melting and connection when the ends of the two sets of filaments come into contact. When the connecting block moves to the middle of the support frame, the ends of the two filaments are completely melted and form a whole. At this time, the opening and closing mechanism drives the two electric heating boxes to move away from each other, and the clamping plate continues to pull the upper filament to move downward in sync with the lower filament. At this time, the molten filament gradually cools down, making the two filaments a whole. During the cooling process, the filaments are not subjected to external pulling forces, thus making the connection between the two more stable. This solves the problem that existing 3D printers with filament recycling structures cannot automatically splice the filaments during the filament recycling process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the front-view structure of the present invention.

[0019] Figure 3 This is a partial structural diagram from the front view of the present invention;

[0020] Figure 4 This is a schematic diagram of the connection structure between the support frame and the connecting block in this invention;

[0021] Figure 5 This is a schematic diagram of the connection structure between the connecting plate and the clamping plate in this invention;

[0022] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0023] Figure 7 This is a schematic diagram of the connection structure between the connecting plate and the electric heating box in this invention;

[0024] Figure 8 This is a schematic diagram of the connection structure between the electric heating box and the extrusion rod in this invention;

[0025] Figure 9 This is a schematic diagram of the connection structure between the irregular frame and the transmission rod in this invention.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Support rod; 2. Extruder; 3. Air cooler; 4. Connecting plate; 5. Clamping plate; 6. Electric heating box; 7. Electric take-up machine; 8. Support frame; 9. Connecting block; 10. L-shaped plate; 11. Irregularly shaped frame; 12. Extrusion rod; 13. Deflection rod; 14. Transmission rod; 15. Extrusion plate; 16. First support plate; 17. Serpentine plate; 18. Second support plate; 19. Push plate; 20. Slide rod; 21. Power storage plate; 22. J-shaped rod; 23. Extrusion block; 24. First guide plate; 25. First guide rod; 26. Opening and closing rod; 27. Opening and closing plate; 28. Second guide plate; 29. ​​Second guide rod; 30. Copper tube; 31. Push block; 32. Printer body. Detailed Implementation

[0028] Please see Figures 1-9This invention provides a technical solution: a 3D printer with a consumable recycling structure, including a printer body 32, a support rod 1 installed on the side wall of the printer body 32, an extruder 2 installed at the top of the support rod 1, and an air cooler 3 installed in the middle of the support rod 1. Two connecting plates 4 are provided on the lower side of the air cooler 3 through a clamping mechanism. Clamping plates 5 are fixedly installed on the left side of both the upper and lower ends of the two connecting plates 4. The clamping mechanism is used to clamp the two sets of filaments together through the clamping plates 5 when the ends of the two sets of filaments come into contact with each other. Two electric heating boxes 6 are provided on the left side of the connecting plates 4 through an opening and closing mechanism. The opening and closing mechanism is used to drive the two electric heating boxes 6 to come into contact with each other and melt the filaments when the clamping mechanism clamps the two sets of filaments. An electric take-up machine 7 is installed on the left side of the bottom end of the support rod 1.

[0029] The clamping mechanism includes a support frame 8 fixedly installed on the left end of the support rod 1. A connecting block 9 is slidably connected to the outside of the support frame 8. The top of the connecting block 9 is connected to the top of the support frame 8 through a tension spring. An L-shaped plate 10 is fixedly installed on the right end of the middle part of the connecting plate 4. The right end of the L-shaped plate 10 passes through the connecting block 9 and is slidably connected to it. The two L-shaped plates 10 are connected by a compression spring. A locking mechanism is provided on the upper side of the L-shaped plate 10. The locking mechanism is used to drive the two connecting plates 4 to stick together and fix them into a whole when the ends of the two sets of wires contact each other. An unlocking mechanism is provided at the bottom of the connecting plate 4. The unlocking mechanism is used to unlock the two connecting plates 4 when the connecting plate 4 can no longer move downward.

[0030] During operation, the wire is extruded from the output end of the extruder 2 and slowly moves downward through the air cooler 3. At this time, the air cooler 3 completely cools the wire. The wire continues to move downward through the clamping plates 5 and then winds itself onto the electric take-up machine 7. The electric take-up machine 7 starts and continuously winds the wire. When a set of wires is extruded, the end of the wire slowly moves downward until it reaches the middle of the two electric heating boxes 6. At this time, the electric take-up machine 7 stops winding.

[0031] When the end of another set of wires moves between the two electric heating boxes 6 and contacts the end of the previous set of wires, the locking mechanism is activated to drive the two connecting plates 4 to move closer to each other. The two connecting plates 4 moving closer to each other drive the two adjacent clamping plates 5 to move closer to each other. At this time, the two upper clamping plates 5 clamp and fix the upper wire, and the two lower clamping plates 5 clamp and fix the lower wire. The electric winding machine 7 starts again to wind the wire. At this time, the ends of the two wires move downward synchronously under the clamping of the clamping plates 5. By setting the clamping plates 5 and connecting plates 4, the lower wire can pull the upper wire to move downward synchronously when it is wound again, and the ends of the two will not separate, thus bringing convenience to the subsequent connection operation of the ends of the two wires. The downward movement of the clamping plates 5 drives the connecting block 9 to move downward through the connecting plates 4 and the L-shaped plate 10. During the downward movement of the connecting block 9, the tension spring at its top gradually stretches.

[0032] When the two connecting plates 4 approach each other, the opening and closing mechanism drives the two electric heating boxes 6 to approach each other until the two electric heating boxes 6 clamp and fix the ends of the two wires. At this time, the electric heating boxes 6 start to heat and gradually melt the ends of the two wires, thus realizing automatic melting and connection when the ends of the two sets of wires come into contact. When the connecting block 9 moves to the middle of the support frame 8, the ends of the two wires are completely melted and form a whole. At this time, the opening and closing mechanism drives the two electric heating boxes 6 to move away from each other, and the clamping plate 5 continues to pull the upper wire to move down synchronously with the lower wire. At this time, the melted wire gradually cools down and makes the two wires a whole. During the cooling process, the wires will not be pulled by external forces, thus making the connection between the two more stable.

[0033] When the connecting block 9 moves to the bottom of the support frame 8, the unlocking mechanism unlocks the two connecting plates 4. At this time, the two L-shaped plates 10, pushed by the compression spring, cause the two connecting plates 4 to move away from each other. The two connecting plates 4 moving away from each other causes the clamping plate 5 to no longer clamp the filament, and the connecting block 9 is no longer subjected to downward force. At this time, the tension spring pulls the connecting block 9 and the clamping plate 5 upward until they return to the initial position, thus preparing for the next set of filaments to be connected. The repeated operation realizes continuous connection of filaments, so that the staff does not have to manually connect the filaments, which greatly saves labor and brings convenience to the use of consumable recycling equipment. It solves the problem that existing 3D printers with consumable recycling structures cannot automatically splice filaments during the consumable recycling process.

[0034] As a further embodiment of the present invention, the locking mechanism includes a shaped frame 11 fixedly mounted at the front end of the connecting block 9. A pressing rod 12 is rotatably connected to the rear left end of the shaped frame 11 via a torsion spring. A deflecting rod 13 is rotatably connected to the top end of the pressing rod 12 via a torsion spring. The left end of the deflecting rod 13 cannot be flipped downwards. A transmission rod 14 is disposed on the front side of the upper clamping plate 5. The front end of the transmission rod 14 passes through the shaped frame 11 and is slidably connected to it. The rear left end of the transmission rod 14 is wedge-shaped. Two extrusion plates 15 are provided on the rear right side of 14 through a power storage mechanism. The power storage mechanism is used to drive the extrusion plates 15 to move to the left a certain distance when the transmission rod 14 can no longer move to the left. A first support plate 16 is fixedly installed at the bottom left end of the connecting block 9. A serpentine plate 17 is slidably connected to the left end of the first support plate 16 through a compression spring. The left end of the serpentine plate 17 is tightly fitted with the two connecting plates 4. A push block 31 is fixedly installed on the left end of the front electric heating box 6. The rear end of the push block 31 is inclined.

[0035] During operation, when the end of the previous group of wires moves downward and passes the right end of the extrusion rod 12, the right end of the extrusion rod 12 is no longer blocked and flips upward under the action of the torsion spring. At the same time, the deflection rod 13 flips downward. During the movement, the left end of the deflection rod 13 is blocked by the transmission rod 14 and flips upward to make way until the deflection rod 13 passes the transmission rod 14. At this time, the deflection rod 13 returns to its initial state under the action of the torsion spring, and the extrusion rod 12 continues to rotate until it reaches a horizontal state. During the downward movement of the end of the other group of wires, the extrusion rod 12 is squeezed. The right end of the extrusion rod 12 is squeezed downward and flips. At this time, the deflection rod 13 flips upward. During the movement, the left end of the deflection rod 13 squeezes the inclined surface of the wedge end of the transmission rod 14, and the transmission rod 14 is squeezed and moves to the left.

[0036] When the ends of the two wires are about to contact, the power storage mechanism drives the two extrusion plates 15 to move to the left. During the leftward movement of the extrusion plates 15, the two connecting plates 4 are squeezed to move closer to each other. When the two connecting plates 4 are in contact with each other, the left end of the serpentine plate 17 is no longer blocked and moves to the left under the push of the compression spring, so that the two connecting plates 4 are clamped and fixed by the serpentine plate 17. Thus, the two connecting plates 4 are driven to fit together and fix them at the same time as the ends of the two wires are connected.

[0037] When the two connecting plates 4 approach each other, the two electric heating boxes 6 approach each other. At this time, the electric heating box 6 on the front side moves backward and squeezes the squeezing rod 12 through the push block 31. The right end of the squeezing rod 12 continues to flip downward at a certain angle due to the squeezing of the inclined surface of the push block 31. At the same time, the left end of the deflection rod 13 continues to flip upward and passes over the wedge-shaped end of the transmission rod 14, so that the squeezing rod 12 will not obstruct the merging of the two electric heating boxes 6.

[0038] As a further embodiment of the present invention, the power storage mechanism includes a second support plate 18 fixedly installed at the top left end of the connecting block 9, a push plate 19 fixedly installed at the rear right end of the transmission rod 14, a slide rod 20 slidably connected to the middle of the push plate 19, a power storage plate 21 fixedly installed at the left end of the slide rod 20, the right ends of the two extrusion plates 15 being fixedly connected to the power storage plate 21, a J-shaped rod 22 provided at the top end of the second support plate 18, the bottom left end of the J-shaped rod 22 passing through the second support plate 18 and fitting against the side wall of the power storage plate 21, and the bottom right end of the J-shaped rod 22 being wedge-shaped, and an extrusion block 23 fixedly installed at the top rear end of the push plate 19;

[0039] During operation, when the transmission rod 14 moves to the left, the right end of the transmission rod 14 drives the push plate 19 to move to the left. At this time, the compression spring on the left side of the push plate 19 is compressed. As the push plate 19 moves to the left, it drives the extrusion block 23 to extrude the inclined surface of the wedge end of the J-shaped rod 22. The J-shaped rod 22 is extruded and moves upward. When the left end of the deflection rod 13 is about to pass the wedge end of the transmission rod 14, the vertical end of the J-shaped rod 22 is completely moved out from the left side of the power storage plate 21, so that the power storage plate 21 is unlocked. At this time, the power storage plate 21, under the push of the compression spring, drives the two extrusion plates 15 to move to the left to extrude the connecting plate 4, thereby providing power for the merging of the two connecting plates 4.

[0040] As a further embodiment of the present invention, the unlocking mechanism includes a first guide plate 24 fixedly installed at the front end of the serpentine plate 17, and a first guide rod 25 fixedly installed on the left side of the bottom end of the support frame 8, with the top end of the first guide rod 25 corresponding to the top left side of the first guide plate 24.

[0041] During operation, when the left end of the deflection rod 13 flips upward past the wedge-shaped end of the transmission rod 14, the transmission rod 14 is in a relaxed state, and the connecting block 9 and the connecting plate 4 continue to move downward. When the connecting block 9 moves to the bottom end of the support frame 8, the inclined surface of the first guide plate 24 is squeezed by the top end of the first guide rod 25, causing the first guide plate 24 to drive the serpentine plate 17 to move to the right. When the serpentine plate 17 is removed from the outside of the two connecting plates 4, the two connecting plates 4 move away from each other under the push of the compression spring. The two connecting plates 4 move away from each other by squeezing the inclined surface of the compression plate 15, pushing the energy storage plate 21 to move to the right until the two connecting plates 4 return to the initial state. At the same time, the left end of the J-shaped plate moves downward to block the energy storage plate 21 again, thus preparing for the next docking operation.

[0042] As a further embodiment of the present invention, the opening and closing mechanism includes two opening and closing rods 26 fixed on opposite sides of two connecting plates 4. Opening and closing plates 27 are slidably connected to the outer sides of the opening and closing rods 26. The sidewalls of the opening and closing plates 27 are connected to the connecting plates 4 by tension springs. The left ends of the two opening and closing plates 27 are respectively fixedly connected to two electric heating boxes 6. A separation mechanism is provided at the right end of the opening and closing plates 27. The separation mechanism is used to drive the opening and closing plates 27 away from the connecting plates 4 when the electric heating boxes 6 move downward to the middle of the support frame 8.

[0043] During operation, when the two connecting plates 4 approach each other, the two electric heating boxes 6 approach each other under the action of the tension spring and the opening and closing plate 27 until they are in contact. At this time, the two electric heating boxes 6 clamp the ends of the two wires and heat them. When the connecting block 9 moves to the middle of the support rod 1, the separation mechanism drives the two electric heating boxes 6 to move away from each other. The two electric heating boxes 6 moving away from each other causes the opening and closing plate 27 to move away from the connecting plate 4. At this time, the tension spring on the side wall of the opening and closing plate 27 extends, and the electric heating boxes 6 no longer heat. This achieves the heating and melting of the ends of the two wires when the connecting block 9 moves in the upper half of the support frame 8, and the cooling and solidification of the part of the wires that have been melted into one piece when the connecting block 9 moves in the lower half of the support frame 8.

[0044] As a further embodiment of the present invention, the separation mechanism includes a second guide plate 28 fixedly installed on the right end of the opening and closing plate 27, and two second guide rods 29 fixedly installed on the left side of the bottom end of the support frame 8, with the top ends of the second guide rods 29 corresponding to the top ends of the second guide plates 28.

[0045] During operation, when the connecting block 9 moves to the middle of the support frame 8, the two second guide rods 29 press the inclined surfaces of the two second guide plates 28 respectively. After being pressed, the two second guide plates 28 drive the two opening and closing plates 27 to move away from each other, thereby providing power for the separation of the two electric heating boxes 6.

[0046] As a further embodiment of the present invention, a copper tube 30 is fixedly installed in the middle of the electric heating box 6, the top end of the copper tube 30 corresponds to the output end of the extruder 2, and the surface of the copper tube 30 is hollow.

[0047] During operation, the wire is extruded from the output end of the extruder 2 and enters the copper tube 30. At this time, the copper tube 30 limits the wire, preventing it from bending under external force during downward movement. This ensures that the wire can accurately pass between the clamping plates 5 and the electric heating box 6. Because the copper tube 30 is hollow, the air cooler 3 can directly blow air onto the wire and cool it without weakening the cooling effect of the air cooler 3. When the wire is extruded, its heat is conducted to the copper tube 30. At this time, the air cooler 3 continuously cools the copper tube 30, indirectly cooling the wire that is not inside the air cooler 3, thereby improving the cooling efficiency of the air cooler 3 and bringing convenience to the cooling operation of the wire.

Claims

1. A 3D printer with a filament recycling structure, comprising a printer body (32), characterized in that: The printer body (32) has a support rod (1) installed on its side wall. An extruder (2) is installed at the top of the support rod (1), and an air cooler (3) is installed in the middle of the support rod (1). Two connecting plates (4) are provided on the lower side of the air cooler (3) through a clamping mechanism. Clamping plates (5) are fixedly installed on the left side of both ends of the two connecting plates (4). The clamping mechanism is used to clamp the two sets of wires together through the clamping plates (5) when the ends of the two sets of wires come into contact with each other. Two electric heating boxes (6) are provided on the left side of the connecting plate (4) through an opening and closing mechanism. The opening and closing mechanism is used to drive the two electric heating boxes (6) to stick together and melt the wires when the clamping mechanism clamps the two sets of wires. An electric take-up machine (7) is installed on the left side of the bottom end of the support rod (1).

2. A 3D printer with a consumable recycling structure according to claim 1, characterized in that: The clamping mechanism includes a support frame (8) fixedly installed on the left end of the support rod (1). A connecting block (9) is slidably connected to the outside of the support frame (8). The top end of the connecting block (9) is connected to the top end of the support frame (8) through a tension spring. An L-shaped plate (10) is fixedly installed on the right end of the middle part of the connecting plate (4). The right end of the L-shaped plate (10) passes through the connecting block (9) and is slidably connected to it. The two L-shaped plates (10) are connected by a compression spring. A locking mechanism is provided on the upper side of the L-shaped plate (10). The locking mechanism is used to drive the two connecting plates (4) to stick together and fix into a whole when the ends of the two sets of wires are in contact. An unlocking mechanism is provided at the bottom end of the connecting plate (4). The unlocking mechanism is used to unlock the two connecting plates (4) when the connecting plate (4) can no longer move downward.

3. A 3D printer with a consumable recycling structure according to claim 2, characterized in that: The locking mechanism includes a shaped frame (11) fixedly installed at the front end of the connecting block (9). A pressing rod (12) is rotatably connected to the rear left end of the shaped frame (11) via a torsion spring. A deflecting rod (13) is rotatably connected to the top end of the pressing rod (12) via a torsion spring. The left end of the deflecting rod (13) cannot be flipped downwards. A transmission rod (14) is provided on the front side of the upper clamping plate (5). The front end of the transmission rod (14) passes through the shaped frame (11) and is slidably connected to it. The rear left end of the transmission rod (14) is wedge-shaped, and the transmission rod (14)... Two extrusion plates (15) are provided on the rear right side through a power storage mechanism. The power storage mechanism is used to drive the extrusion plates (15) to move to the left a certain distance when the transmission rod (14) can no longer move to the left. A first support plate (16) is fixedly installed at the bottom left end of the connecting block (9). A serpentine plate (17) is slidably connected to the left end of the first support plate (16) through a compression spring. The left end of the serpentine plate (17) is tightly fitted with the two connecting plates (4). A push block (31) is fixedly installed on the left end of the electric heating box (6) on the front side. The rear end of the push block (31) is inclined.

4. A 3D printer with a consumable recycling structure according to claim 3, characterized in that: The energy storage mechanism includes a second support plate (18) fixedly installed on the top left end of the connecting block (9), a push plate (19) fixedly installed on the rear right end of the transmission rod (14), a slide rod (20) slidably connected to the middle of the push plate (19), an energy storage plate (21) fixedly installed on the left end of the slide rod (20), the right ends of the two extrusion plates (15) are fixedly connected to the energy storage plate (21), a J-shaped rod (22) is provided at the top of the second support plate (18), the bottom left end of the J-shaped rod (22) passes through the second support plate (18) and fits against the side wall of the energy storage plate (21), and the bottom right end of the J-shaped rod (22) is wedge-shaped, and an extrusion block (23) is fixedly installed on the top rear end of the push plate (19).

5. A 3D printer with a consumable recycling structure according to claim 3, characterized in that: The unlocking mechanism includes a first guide plate (24) fixedly installed at the front end of the serpentine plate (17), and a first guide rod (25) fixedly installed on the left side of the bottom end of the support frame (8). The top end of the first guide rod (25) corresponds to the top left side of the first guide plate (24).

6. A 3D printer with a filament recycling structure according to claim 2, characterized in that: The opening and closing mechanism includes two connecting plates (4) with one side of each plate fixed away from the other. The outer sides of the opening and closing rods (26) are slidably connected to the opening and closing plates (27). The side walls of the opening and closing plates (27) are connected to the connecting plates (4) by tension springs. The left ends of the two opening and closing plates (27) are respectively fixedly connected to the two electric heating boxes (6). The right end of the opening and closing plates (27) is provided with a separation mechanism. The separation mechanism is used to drive the opening and closing plates (27) away from the connecting plates (4) when the electric heating box (6) moves down to the middle of the support frame (8).

7. A 3D printer with a consumable recycling structure according to claim 6, characterized in that: The separation mechanism includes a second guide plate (28) fixedly installed on the right end of the opening and closing plate (27), and two second guide rods (29) fixedly installed on the left side of the bottom end of the support frame (8), with the top end of the second guide rods (29) corresponding to the top end of the second guide plate (28).

8. A 3D printer with a consumable recycling structure according to claim 1, characterized in that: A copper tube (30) is fixedly installed in the middle of the electric heating box (6). The top end of the copper tube (30) corresponds to the output end of the extruder (2), and the surface of the copper tube (30) is hollow.

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