CN115026311A

CN115026311A - 3D prints waste recycling treatment facility

Info

Publication number: CN115026311A
Application number: CN202210959297.9A
Authority: CN
Inventors: 陈烜
Original assignee: Xuzhou Daye 3d Technology Co ltd
Current assignee: Xuzhou Daye 3d Technology Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2022-09-09

Abstract

The invention relates to the technical field of 3D printing waste recycling, in particular to 3D printing waste recycling and treating equipment which comprises a fixing frame, a crushing mechanism and a melting box. The waste material thrown into the crushing cylinder is firstly crushed by the rolling blade on the crushing roller for one time, so that large waste materials are prevented from being clamped on the first crushing blade and the second crushing blade of the crushing mechanism, then the waste materials are crushed again by the crushing mechanism, the waste materials are screened in the crushing process, the size of the crushed waste materials is the same, the waste materials entering the melting box are prevented from being different in size, the effect that the waste materials are difficult to fully melt in the melting process is avoided, meanwhile, the screw rod is rotated to drive the two extrusion heads to move in the melting process of the waste materials, the two extrusion heads extrude liquid waste materials to flow in the moving process, the waste materials close to the middle of the inner side of the melting box flow to the side wall of the melting box, and the uniformity of the waste materials in melting is improved.

Description

3D prints waste recycling treatment facility

Technical Field

The invention relates to the technical field of 3D printing waste recycling, in particular to 3D printing waste recycling treatment equipment.

Background

3D prints and is a rapid prototyping technique, it is one kind and regards digital model file as the basis to use adhesive material such as powdered metal or plastics, construct a technique of object through the mode of printing layer by layer, 3D printing technique is often used in fields such as mould manufacturing and industrial design, can remain some printing waste material after 3D prints, some printing waste material after using can be put into use again through retrieving after the melting is reformed shape.

The existing 3D printing waste recovery device is used for crushing waste firstly and then directly smelting and recovering the crushed waste, but the crushing size of the waste is not consistent in the crushing process, so that the waste is difficult to achieve the effect of full smelting in the smelting process; in addition, current 3D prints waste recovery device when smelting the waste material, and the waste material that is located and smelts fuse-element middle part leads to it to smelt speed slower owing to keep away from the fuse-element lateral wall, has caused the inhomogeneous problem of waste material smelting.

Disclosure of Invention

In order to solve the problems, the invention adopts the following technical scheme that the 3D printing waste recycling and reusing treatment equipment comprises fixing frames, a crushing mechanism and a melting tank, wherein a crushing cylinder is arranged between the two fixing frames, the bottom of the crushing cylinder is rotatably connected with a screening hopper, the side wall of the lower end of the crushing cylinder is fixedly sleeved with a storage hopper, the screening hopper is positioned in the storage hopper, the crushing mechanism is arranged in the crushing cylinder, the melting tank is arranged between the two fixing frames, the side wall of the upper end of the melting tank is provided with an inlet, and the inlet is connected with the bottom of the storage hopper through a valve.

The crushing mechanism comprises a fixed cover, the upper end of the inner wall of the crushing barrel is fixedly connected with the fixed cover through symmetrically arranged support rods, a rotating shaft is rotatably connected between the bottom of the fixed cover and the screening hopper, first crushing blades which are arranged along the axial direction of the rotating shaft are arranged on the side wall of the rotating shaft, the first crushing blades on the upper side and the lower side are arranged in a staggered manner along the circumferential direction of the rotating shaft, two groups of second crushing blades are arranged on the side wall of the rotating shaft, the number of the second crushing blades in each group is two, the two crushing blades in the same group are arranged in a splayed manner, the two groups of the second crushing blades are respectively positioned on two sides of the first crushing blades, a guide cover is arranged at the bottom of the inner wall of the screening hopper and is rotatably connected with the rotating shaft, the bottom of the rotating shaft penetrates through the screening hopper and is connected with a rotating motor which is arranged in the storage hopper through a bracket, a circular hole is formed in the bottom of the screening hopper, and a driving shaft is fixedly connected to the bracket, drive the axis of rotation and run through the circular port, all be connected with the drive gear in drive axis of rotation and the axis of rotation, drive gear and drive axle swivelling joint, drive gear and axis of rotation fixed connection, the bottom fixed mounting that the screening was fought has the ring gear, drive equal fixedly connected with drive gear in axis of rotation and the axis of rotation, two mesh transmissions between the drive gear, the lateral wall of axis of rotation is close to bottom department and installs the connecting rod of symmetrical arrangement, install the switch board that carries out stifled switch-off to the screening fill inside wall on the connecting rod, the No. three crushing blades who evenly arranges along its circumference are installed through the dead lever to the lower extreme lateral wall of axis of rotation.

Preferably, rake teeth which are uniformly distributed are arranged on the end face, close to the inner side wall of the screening hopper, of the material shifting plate, rolling balls are connected to the end face, close to the inner side wall of the screening hopper, of the rake teeth, and antifriction balls are connected to the end face, close to the guide cover, of the material shifting plate in a rolling mode.

Preferably, the inner wall of a crushing barrel is close to upper end department and installs the guard plate of symmetrical arrangement, and the swivelling joint has the crushing roller of symmetrical arrangement between two guard plates, and the rolling blade of evenly arranging along its circumference is installed to the lateral wall of crushing roller, installs swing pinion after the lateral wall of guard plate and crushing barrel is run through to one of them end of crushing roller, and the meshing transmission between two swing pinion, the inner wall of a crushing barrel is close to feed inlet department and installs symmetrical arrangement and be the leak protection board of falling eight characters type arrangement.

Preferably, the leakage-proof plate is provided with protective blades which are arranged in a staggered manner with the rolling blades along the axial direction of the crushing roller.

Preferably, the bottom of the melting tank is provided with a leakage discharge port, the leakage discharge port is provided with a closed assembly for closing the leakage discharge port, the melting tank is internally and rotatably connected with a rotary screw rod, the rotary screw rod is a bidirectional threaded rod, one end of the rotary screw rod penetrates through the melting tank and the fixing frame and then is connected with a motor arranged on the side wall of the fixing frame through a machine base, the rotary screw rod is connected with symmetrically arranged extrusion heads in a thread fit mode, the two extrusion heads are of a convex column structure with opposite ends of which the diameters are gradually reduced, the inner side wall of the melting tank is provided with a guide groove, the side wall of each extrusion head is provided with a guide block in sliding connection with the guide groove, and the guide block is provided with an antifriction roller in rolling contact with the guide groove.

Preferably, two the opposite face of extrusion head all rotates the column spinner that is connected with the taper type structure, and the spacing groove has been seted up to the lateral wall of rotatory screw rod, install on the column spinner with spacing groove sliding connection's stopper, the puddler of evenly arranging is installed to the lateral wall of column spinner, and the one end that the column spinner was kept away from to a plurality of puddlers is located the coplanar.

Preferably, a first telescopic cylinder is fixedly connected between the extrusion head and the melting box, a second telescopic cylinder is fixedly connected between the two rotary columns, and the first telescopic cylinder and the second telescopic cylinder are both sleeved on the rotary screw.

The invention has the beneficial effects that: 1. the invention designs a 3D printing waste recycling treatment device, which firstly crushes waste thrown into a crushing cylinder once through a rolling blade on a crushing roller, thereby crushing the large wastes, preventing the large wastes from being clamped on the first crushing blade and the second crushing blade of the crushing mechanism, and then crushing the wastes again through the crushing mechanism, the waste materials are screened in the crushing process, so that the size of the crushed waste materials is the same, the waste materials entering the melting box are prevented from being inconsistent in size, the effect of fully melting the waste materials is difficult to achieve, meanwhile, the screw rod is rotated to drive the two extrusion heads to move in the process of smelting the waste materials, so that the two extrusion heads extrude the molten waste materials to flow in the moving process, therefore, the waste material close to the middle part of the inner side of the melting box flows to the side wall of the melting box, and the uniformity of waste material melting is improved.

2. The kickoff plate and the screening hopper rotate reversely, and the kickoff plate drives the rake teeth to move on the side wall of the screening hopper, so that waste materials accumulated on the screening hopper are stirred, and the waste materials are prevented from being accumulated on the screening hopper or being blocked in screening holes of the screening hopper to cause blockage.

3. The two extrusion heads in the invention extrude the melted waste material to flow in the moving process, so that the waste material close to the side wall of the melting box and the waste material far away from the side wall of the melting box perform certain flow exchange, and the melting sufficiency of the melted waste material is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partially sectional perspective view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a sectional view taken along line a-a of fig. 3 according to the present invention.

Fig. 5 is an enlarged view of the invention at B of fig. 4.

FIG. 6 is a schematic sectional view of the crushing cylinder, the guard plate, the crushing roller, the rolling blade, the rotary gear, and the leakage preventing plate according to the present invention.

FIG. 7 is a right sectional structural view of the pushing head, the rotating column, the limiting block, the stirring rod and the guiding block of the present invention.

In the figure: 1. a fixed mount; 10. a crushing cylinder; 101. a protection plate; 102. a crushing roller; 103. rolling a blade; 104. a rotating gear; 105. a leak-proof plate; 110. a guard blade; 11. a storage hopper; 12. a screening hopper; 13. a valve; 2. a crushing mechanism; 20. a fixed cover; 21. a rotating shaft; 22. a crushing blade I; 23. a second crushing blade; 24. driving a shaft; 25. driving the gear; 26. a connecting rod; 27. a kick-out plate; 270. rake teeth; 271. a ball bearing; 272. antifriction beads; 28. a third crushing blade; 3. a melting box; 30. a leakage outlet; 301. a first telescopic cylinder; 302. a second telescopic cylinder; 31. rotating the screw; 32. extruding the pushing head; 321. a spin column; 322. a limiting block; 323. a stirring rod; 33. a guide groove; 34. and a guide block.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

Referring to fig. 1 and 2, a 3D printing waste recycling treatment facility, including mount 1, crushing mechanism 2 and melting case 3, two install broken section of thick bamboo 10 between the mount 1, the bottom of broken section of thick bamboo 10 is rotated and is connected with screening fill 12, the fixed cover of lower extreme lateral wall of broken section of thick bamboo 10 is equipped with storage hopper 11, screening fill 12 is located storage hopper 11, install crushing mechanism 2 in the broken section of thick bamboo 10, install melting case 3 between two mounts 1, the inlet port has been seted up to the upper end lateral wall of melting case 3, be connected through valve 13 between the bottom of inlet port and storage hopper 11.

Referring to fig. 2, 4 and 5, the crushing mechanism 2 includes a fixed cover 20, the upper end of the inner wall of the crushing cylinder 10 is fixedly connected with the fixed cover 20 through symmetrically arranged support rods, a rotating shaft 21 is rotatably connected between the bottom of the fixed cover 20 and the screening hopper 12, first crushing blades 22 arranged along the axial direction of the rotating shaft 21 are installed on the side wall of the rotating shaft 21, the first crushing blades 22 on the upper and lower sides are circumferentially staggered along the rotating shaft 21, two groups of second crushing blades 23 are installed on the side wall of the rotating shaft 21, the number of the second crushing blades 23 in each group is two, the two crushing blades 23 in the same group are arranged in a splayed shape, the two groups of the second crushing blades 23 are respectively located on two sides of the first crushing blades 22, a guide cover is installed on the bottom of the inner wall of the screening hopper 12 and is rotatably connected with the rotating shaft 21, the bottom of the rotating shaft 21 penetrates through the screening hopper 12 and then is connected with a rotary motor installed in the storage hopper 11 through a bracket, circular port has been seted up to the bottom of screening fill 12, fixedly connected with drives axle 24 and runs through the circular port on the support, it drives gear 25 all to be connected with on drive axle 24 and the axis of rotation 21, it rotates with drive axle 24 to drive gear 25 and is connected, it drives gear 25 and axis of rotation 21 fixed connection, the bottom fixed mounting that the screening was fought 12 has the ring gear, the lateral wall of axis of rotation 21 is close to bottom department and installs symmetrical arrangement's connecting rod 26, install the switch plate 27 that carries out anti-blocking group material to screening fill 12 inside walls on the connecting rod 26, No. three crushing blade 28 that evenly arranges along its circumference is installed through the dead lever to the lower extreme lateral wall of axis of rotation 21, No. three crushing blade 28 sets up along the slope of screening 12 diapalls of fighting.

Referring to fig. 5, rake teeth 270 are uniformly arranged on the end surface of the material shifting plate 27 close to the inner side wall of the screening hopper 12, a ball 271 is connected to the end surface of the rake teeth 270 close to the inner side wall of the screening hopper 12 in a rolling manner, and an antifriction ball 272 is connected to the end surface of the material shifting plate 27 close to the guide cover in a rolling manner.

Starting a rotating motor, driving the rotating shaft 21 to rotate through the meshing between the driving gears 25 in the rotating process, driving the screening hopper 12 to rotate in the rotating process through the driving shaft 24, then putting the waste into the crushing barrel 10 from the feeding port at the upper end of the crushing barrel 10, driving the first crushing blade 22 and the second crushing blade 23 to rotate through the rotating shaft 21 to crush the waste, increasing the length of the second crushing blade 23 through the splayed arrangement of the second crushing blade 23, improving the crushing efficiency of the waste, simultaneously enabling the waste to not only obtain the circumferential rotary crushing of the first crushing blade 22 but also receive the rotary crushing of the second crushing blade 23 in the inclined direction in the falling process, and crushing the waste falling to the screening hopper 12 due to gravity through the rotary cutting of the third crushing blade 28, meanwhile, the rotation of the third crushing blade 28 can drive the waste materials sinking on the screening hopper 12 to fly up in a rotating mode, so that the first crushing blade 22 and the second crushing blade 23 can crush the waste materials in a rotating mode, the crushing sufficiency of the waste materials is improved, and the recovered waste materials can be conveniently and fully melted and reused.

Drive switch plate 27 at axis of rotation 21 pivoted in-process through connecting rod 26 and rotate, axis of rotation 21 drives screening fill 12 through two meshing that drive between gear 25 and the ring gear and rotates simultaneously, thereby make switch plate 27 and screening fill 12 antiport, switch plate 27 drives rake teeth 270 and removes on screening fill 12 lateral wall, thereby stir the waste material of piling up on screening fill 12, prevent that the waste material from piling up on screening fill 12 or the waste material card from causing the jam in the screening hole of screening fill 12, lead to screening fill 12 to be difficult to carry out the problem of screening to the waste material after the breakage, ball 271 and antifriction ball 272 all are used for reducing switch plate 27 at the frictional force of rotation in-process.

Referring to fig. 2, fig. 3, fig. 4 and fig. 6, the inner wall of the crushing cylinder 10 is provided with protection plates 101 which are symmetrically arranged near the upper end, the two protection plates 101 are rotatably connected with crushing rollers 102 which are symmetrically arranged, the side walls of the crushing rollers 102 are provided with rolling blades 103 which are uniformly arranged along the circumferential direction of the crushing rollers, one end of each crushing roller 102 penetrates through the side walls of the protection plates 101 and the crushing cylinder 10 and is provided with a rotating gear 104, the two rotating gears 104 are in meshing transmission, and the inner wall of the crushing cylinder 10 is provided with anti-leakage plates 105 which are symmetrically arranged and arranged in an inverted-splayed shape near the feeding port.

One of them crushing roller 102 is connected with external drive equipment (like the motor), and external drive equipment drives the crushing roller 102 who is connected rather than rotating, rotates in step through the meshing between rotary gear 104 between two crushing rollers 102, then puts into crushing section of thick bamboo 10 with the waste material from the upper end feed inlet department of crushing section of thick bamboo 10, and the waste material drops downwards after the rolling blade 103 on two crushing rollers 102 is broken, and crushing roller 102 leak protection board 105 all around and guard plate 101 all are used for preventing that the waste material from directly dropping downwards without first breakage.

Referring to fig. 4, the leakage-proof plate 105 is provided with the protective blades 110 which are arranged along the axial direction of the crushing roller 102 in a staggered manner with the rolling blades 103, and the protective blades 110 can not only prevent the waste materials from directly falling downwards, but also can be matched with the rolling blades 103 to crush the waste materials.

Referring to fig. 4 and 7, a leakage discharge port 30 is formed in the bottom of the melting tank 3, a closing component for closing the leakage discharge port 30 is installed on the leakage discharge port 30, a rotating screw 31 is rotatably connected in the melting tank 3, the rotating screw 31 is a bidirectional threaded rod, one end of the rotating screw 31 penetrates through the melting tank 3 and the fixing frame 1 and then is connected with a motor installed on the side wall of the fixing frame 1 through a machine base, the rotating screw 31 is connected with symmetrically arranged extrusion heads 32 in a threaded matching manner, the two extrusion heads 32 are of a convex column structure with gradually reduced diameters of opposite ends, a guide groove 33 is formed in the inner side wall of the melting tank 3, a guide block 34 slidably connected with the guide groove 33 is installed on the side wall of the extrusion heads 32, an anti-friction roller in rolling contact with the guide groove 33 is installed on the guide block 34, and the anti-friction roller is used for reducing the friction force between the guide block 34 and the guide groove 33.

When a certain amount of crushed waste is stored in the storage hopper 11, the valve 13 is opened, the crushed waste enters the melting tank 3, then the valve 13 is closed, then the waste in the melting tank 3 is heated to melt the waste, then the motor is started, the motor drives the rotary screw 31 to rotate in a forward and reverse direction, the rotary screw 31 drives the two extrusion heads 32 to move in a threaded matching manner in the rotating process, the guide groove 33 and the guide block 34 limit the extrusion heads 32, so that the extrusion heads 32 only move linearly, the two extrusion heads 32 extrude the melted waste in a molten state in the moving process, so that the waste close to the side wall of the melting tank 3 and the waste far away from the side wall of the melting tank 3 are alternated in a certain flowing manner, the melting sufficiency of the waste in the molten state is improved, and when a closing component (such as a valve) is opened, the molten waste is discharged from the drain opening 30.

Referring to fig. 4, the opposite surfaces of the two pushing heads 32 are all rotatably connected with the rotating columns 321 of the conical structures, the side walls of the rotating screws 31 are provided with limiting grooves, the rotating columns 321 are provided with limiting blocks 322 connected with the limiting grooves in a sliding manner, the side walls of the rotating columns 321 are provided with stirring rods 323 uniformly distributed, and one ends of the stirring rods 323 far away from the rotating columns 321 are located in the same plane to prevent the stirring rods 323 from influencing the movement of the pushing heads 32.

The extrusion head 32 rotates along with the rotation of the rotary screw 31 under the limiting effect of the limiting block 322 and the limiting groove of the rotary column 321 in the moving process, the rotary column 321 drives the stirring rod 323 to rotate in the rotating process, and the stirring rod 323 stirs the molten waste materials, so that the waste materials are more sufficiently heated and melted.

A telescopic cylinder 301 is fixedly connected between the extrusion head 32 and the melting box 3, a telescopic cylinder 302 is fixedly connected between the two rotating columns 321, the telescopic cylinder 301 and the telescopic cylinder 302 are both sleeved on the rotating screw rod 31, and the telescopic cylinder 301 and the telescopic cylinder 302 are both used for preventing waste materials after melting from blocking in a thread groove on the rotating screw rod 31, so that the extrusion head 32 cannot move.

During operation, put into crushing section of thick bamboo 10 with the waste material from the upper end feed inlet department of crushing section of thick bamboo 10, the waste material drops downwards after the rolling blade 103 on two crushing rollers 102 is broken, the in-process that the waste material after the first crushing drops downwards of axis of rotation 21 in crushing mechanism 2 drives crushing blade 22 No. two, crushing blade 23 and crushing blade 28 No. three are rotatory and carry out the breakage to the waste material, axis of rotation 21 drives screening hopper 12 through two meshing that drive between the gear 25 rotatory in-process of the three times broken in-process of waste material, screening hopper 12 sieves the waste material after the breakage at rotatory in-process, thereby sieve the waste material after the breakage to storing in the hopper 11, later open valve 13, send into the broken waste material and melt in melting box 3, thereby make the waste material after smelting obtain reuse.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a 3D prints waste recycling treatment facility, includes mount (1), broken mechanism (2) and melting case (3), its characterized in that: a crushing barrel (10) is installed between the two fixing frames (1), the bottom of the crushing barrel (10) is rotatably connected with a screening hopper (12), the side wall of the lower end of the crushing barrel (10) is fixedly sleeved with a storage hopper (11), the screening hopper (12) is positioned in the storage hopper (11), a crushing mechanism (2) is installed in the crushing barrel (10), a melting box (3) is installed between the two fixing frames (1), the side wall of the upper end of the melting box (3) is provided with an inlet, and the inlet is connected with the bottom of the storage hopper (11) through a valve (13);

the crushing mechanism (2) comprises a fixed cover (20), the upper end of the inner wall of the crushing barrel (10) is fixedly connected with the fixed cover (20) through symmetrically arranged support rods, a rotating shaft (21) is rotatably connected between the bottom of the fixed cover (20) and the screening hopper (12), a first crushing blade (22) which is arranged along the axial direction of the rotating shaft (21) is installed on the side wall of the rotating shaft (21), the first crushing blades (22) on the upper side and the lower side are circumferentially staggered along the rotating shaft (21), two groups of second crushing blades (23) are installed on the side wall of the rotating shaft (21), the number of the second crushing blades (23) in each group is two, the two second crushing blades (23) in the same group are arranged in a splayed shape, the two groups of the second crushing blades (23) are respectively positioned on the two sides of the first crushing blades (22), a guide cover is installed at the bottom of the inner wall of the screening hopper (12), and the guide cover is rotatably connected with the rotating shaft (21), rotation axis (21) bottom run through behind the screening fill (12) with through the rotating electrical machines of support mounting in storing fill (11) be connected, the circular port has been seted up to the bottom of screening fill (12), fixedly connected with drive axle (24) on the support, drive axle (24) run through the circular port, all be connected with on drive axle (24) and rotation axis (21) and drive gear (25), drive gear (25) and drive axle (24) and rotate and be connected, drive gear (25) and rotation axis (21) fixed connection, the bottom fixed mounting of screening fill (12) has the ring gear, the lateral wall of rotation axis (21) is close to bottom department and installs symmetrical arrangement's connecting rod (26), install on connecting rod (26) and carry out the switch plate (27) that prevent stifled switch-off to screening fill (12) inside wall, No. three crushing blade (28) of evenly arranging along its circumference are installed through the dead lever to the lower extreme lateral wall of rotation axis (21).

2. The 3D printing waste recycling and processing device according to claim 1, wherein: rake teeth (270) which are evenly distributed are installed on the end face, close to the inner side wall of the screening hopper (12), of the material stirring plate (27), rolling balls (271) are connected to the end face, close to the inner side wall of the screening hopper (12), of the rake teeth (270), and antifriction balls (272) are connected to the end face, close to the guide cover, of the material stirring plate (27) in a rolling mode.

3. The 3D printing waste recycling and processing device according to claim 1, wherein: the inner wall of broken section of thick bamboo (10) is close to upper end department and installs protection plate (101) of symmetrical arrangement, rotate between two protection plates (101) and be connected with symmetrical arrangement's crushing roller (102), rolling blade (103) of evenly arranging along its circumference are installed to the lateral wall of crushing roller (102), install rotating gear (104) behind the lateral wall of protection plate (101) and broken section of thick bamboo (10) is run through to one end wherein of crushing roller (102), meshing transmission between two rotating gear (104), broken section of thick bamboo (10) inner wall is close to feed inlet department and installs symmetrical arrangement and be leak protection board (105) that the eight characters of falling arranged.

4. The 3D printing waste recycling and processing device according to claim 3, wherein: the leakage-proof plate (105) is provided with protective blades (110) which are axially staggered with the rolling blades (103) along the crushing roller (102).

5. The 3D printing waste recycling and processing device according to claim 1, wherein: discharge leak (30) have been seted up to melting case (3) bottom, it will discharge leak (30) closed subassembly to install on discharge leak (30), melting case (3) internal rotation is connected with rotatory screw rod (31), rotatory screw rod (31) are two-way threaded rod, wherein one end of rotatory screw rod (31) is run through behind melting case (3) and mount (1) and is connected with the motor of installing at mount (1) lateral wall through the frame, be connected with symmetrical arrangement's extrusion head (32) through screw-thread fit's mode on rotatory screw rod (31), two extrusion head (32) are the convex column structure that the looks remote site diameter reduces gradually, guide way (33) have been seted up to the inside wall of melting case (3), guide block (34) with guide way (33) sliding connection are installed to the lateral wall of extrusion head (32), install on guide block (34) with guide way (33) rolling contact's the reducing roller.

6. The 3D printing waste recycling and processing device according to claim 5, wherein: two the opposite face of extrusion head (32) all rotates column spinner (321) that is connected with the taper structure, and the spacing groove has been seted up to the lateral wall of rotatory screw rod (31), install on column spinner (321) with spacing groove sliding connection's stopper (322), puddler (323) of evenly arranging are installed to the lateral wall of column spinner (321), and the one end that column spinner (321) were kept away from in a plurality of puddlers (323) is located the coplanar.

7. The 3D printing waste recycling and processing device according to claim 6, wherein: a first telescopic cylinder (301) is fixedly connected between the extrusion head (32) and the melting box (3), a second telescopic cylinder (302) is fixedly connected between the two rotating columns (321), and the first telescopic cylinder (301) and the second telescopic cylinder (302) are sleeved on the rotating screw (31).