A waste recovery device for CNC machining center

Abstract

The present invention discloses a waste recycling device for a numerically controlled machining center, comprising: a first conveying part, an inlet of a first screening part is arranged at the end of the running direction of the first conveying part, a second conveying part is arranged at the bottom end of the first screening part, a crushing part is arranged at the outlet end of the first screening part, a rotating part is arranged on one side of the crushing part, the crushing part is located directly above the second conveying part, a magnetic attraction separation part is arranged above the second conveying part, and a heating separation part is arranged at the tail end of the running direction of the second conveying part; the present invention can classify and recycle the metal waste of the numerically controlled machining center, avoiding the problem of mixing of various recycled metal wastes, thereby facilitating the subsequent secondary utilization of various metal wastes; at the same time, in the present application, the metal waste is first screened and then crushed, which reduces the workload of the crushing part and increases the work efficiency, and the metal wastes fed into the heating separation part are substantially the same in size, so that the metal wastes are easier to melt and separate in the heating separation part.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machining, in particular to a waste material recovery device for a numerical control machining center. Background Art

[0002] CNC machining center is a high-efficiency automated machine tool composed of mechanical equipment and CNC system suitable for machining complex parts. CNC machining center is one of the most productive and widely used CNC machine tools in the world. It has strong comprehensive machining capacity, can complete more machining content after clamping the workpiece once, and has high machining accuracy. For batch workpieces with medium machining difficulty, its efficiency is 5 to 10 times that of ordinary equipment. In particular, it can complete many processes that ordinary equipment cannot complete. It is more suitable for single-piece machining with complex shapes and high precision requirements or small and medium batch multi-variety production. It concentrates milling, boring, drilling, tapping and cutting thread functions on one device, so that it has a variety of process methods. According to the spatial position of the spindle during machining, the machining center is classified into horizontal and vertical machining centers. When the CNC machining center is processing, as time goes by, a large amount of metal waste will accumulate at its bottom. In order to ensure the working efficiency of the CNC machining center, it is necessary to frequently recycle the metal waste at its bottom.

[0003] In actual production, due to the different materials of workpieces, CNC machining centers will also generate metal waste of different materials during operation. Common ones include iron, copper and aluminum, etc. The recovery device in the related technology directly lifts all the metal waste into the box for pressing, which will cause various metal wastes to be mixed together, which is not conducive to the subsequent recycling of metal wastes. Summary of the invention

[0004] The purpose of the present invention is to provide a waste recovery device for a CNC machining center to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned object, the present invention provides the following scheme: The present invention provides a waste material recycling device for a CNC machining center, comprising: a first conveying part, an inlet of a first screening part is arranged at the end of the running direction of the first conveying part, a second conveying part is arranged at the bottom of the first screening part, a crushing part is arranged at the outlet end of the first screening part, a rotating part is arranged at one side of the crushing part, the crushing part is located directly above the second conveying part, a magnetic separation part is arranged above the second conveying part, and a heating separation part is arranged at the tail end of the running direction of the second conveying part;

[0006] The first screening part includes an outer cylinder, which is opened at both ends, a feed opening is provided on the side wall of the outer cylinder, and the feed opening is located at the bottom end of the outer cylinder. The outlet end of the outer cylinder is lower than the inlet end of the outer cylinder. An inner cylinder is rotatably connected inside the outer cylinder, the inner cylinder is coaxially arranged with the outer cylinder, a gap is left between the inner cylinder and the outer cylinder, both ends of the inner cylinder are opened, and a plurality of feeding holes are circumferentially provided on the side wall of the inner cylinder.

[0007] Preferably, the first conveying part includes two first conveying rollers, any one of the first conveying rollers is drivingly connected to the first conveying motor, a first conveying belt is sleeved on the outer side walls of the two first conveying rollers, a plurality of water holes are opened on the first conveying belt, the first conveying belt is inclined, a water tank is arranged below the first conveying belt, the lower end of the first conveying belt is located below the baffle, the baffle is fixed in the machining center and is located below the tool, and the top end of the first conveying belt extends into the inner cylinder.

[0008] Preferably, two bearings are fixed to the inner wall of the outer cylinder, and the two bearings are respectively located at the two ends of the outer cylinder, and the two ends of the inner cylinder are respectively fixed to the inner edges of the two bearings, one end of the inner cylinder extends out of the outer cylinder and is fixed to a gear ring, and the gear ring is fixed to the outer wall of the inner cylinder, and a first gear is meshed at the outer edge of the gear ring, and the first gear is fixed to the output shaft of the screening motor, and the screening motor is fixed to the outer wall of the outer cylinder.

[0009] Preferably, the crushing part includes a crushing box, the top of the crushing box is fixedly connected to a feed hopper, two crushing rollers are rotatably connected to the crushing box, a plurality of crushing teeth are fixedly connected to the outer side walls of the crushing rollers, and the plurality of crushing teeth located at the two crushing rollers are staggered, the two crushing rollers are connected through a second gear transmission, any one of the crushing rollers is transmission-connected to a crushing motor, the crushing motor is fixed to the outer side wall of the crushing box, a screen is provided below the crushing roller, the screen is slidably connected to the crushing box, the screen is inclined, the top of the screen extends out of the crushing box and is rotatably connected to a connecting rod, the end of the connecting rod away from the screen is rotatably connected to a cam, the cam is fixed to the output shaft of the screen motor, the screen motor is fixed to the outer side wall of the crushing box, a square opening is provided on one side wall of the crushing box away from the screen motor, the lower end of the screen extends out of the square opening and is located directly above the rotating part.

[0010] Preferably, the rotating part includes a rotating bucket, which is located below the lower end of the screen, and the bottom end of the rotating bucket is fixedly connected to and communicated with an inclined rotating pipe, an auger is rotatably connected inside the rotating pipe, one end of the auger passes through the rotating pipe and is fixedly connected to the output shaft of a rotating motor, the rotating motor is fixedly connected to the lower end of the rotating pipe near the rotating bucket, the high end of the rotating pipe is located directly above the slide plate, and the low end of the slide plate is located directly above the first conveyor belt.

[0011] Preferably, the second conveying part includes two second conveying rollers, any one of the second conveying rollers is drivingly connected to a second conveying motor, a second conveying belt is sleeved on the outer side walls of the two second conveying rollers, the second conveying belt is located directly below the outer cylinder and the crushing box, a third conveying belt is arranged below the second conveying belt, the third conveying belt is sleeved on the outer side walls of the third conveying roller, a plurality of baffles are fixedly connected to the outer side walls of the third conveying belt at intervals, the baffles are perpendicular to the third conveying belt, any one of the third conveying rollers is drivingly connected to a third conveying motor, the third conveying belt is inclined, the lower end of the third conveying belt is located at the end of the running direction of the second conveying belt, and the heating separation part is arranged at the end of the running direction of the third conveying belt.

[0012] Preferably, the magnetic separation part includes a fourth conveying roller, a fourth conveying belt is sleeved on the outer wall of the fourth conveying roller, a magnetic layer is fixedly connected to the outer wall of the fourth conveying belt, a protective layer is fixedly connected to the outer wall of the magnetic layer, the fourth conveying belt extends out of the machining center and is provided with a scraper, the scraper is located below the fourth conveying belt and is in sliding contact with the outer wall of the protective layer, and a solid collection box is placed below the scraper.

[0013] Preferably, the heating separation part includes a furnace body, the top and bottom ends of the furnace body are connected, a bracket is fixedly connected to the inner wall of the furnace body, a receiving plate is arranged below the bracket, a crucible is placed above the bracket, an electric heating wire is arranged between the crucible and the inner wall of the furnace body, a plurality of liquid flow holes are opened on the bottom wall of the crucible, and the crucible is located directly above the receiving plate.

[0014] Preferably, two partitions are circumferentially fixed to the inner wall of the outer cylinder, the two partitions are respectively located at the two ends of the outer cylinder, the two partitions are located between the two bearings, the feed hole is located between the two partitions, and the inner edge of the partition is in sliding contact with the outer wall of the inner cylinder.

[0015] The present invention discloses the following technical effects:

[0016] In the present invention, the metal waste will first fall on the top of the first conveying part, and then the first conveying part will convey the metal waste into the inner cylinder, the inner cylinder rotates in the outer cylinder, so that smaller particles fall on the top of the second conveying part, and the larger metal waste in the inner cylinder falls into the crushing part, and the crushing part crushes the metal waste. After the crushing, the smaller part of the metal waste particles falls on the top of the second conveying part, and the larger part of the particles enters the rotating part, and falls on the top of the second conveying part after secondary crushing. The iron in the metal waste is separated by the magnetic separation part, and the copper and aluminum in the metal waste enter the heating separation part for separation.

[0017] The present invention can classify and recycle the metal waste of the CNC machining center, avoiding the problem of mixing various recycled metal wastes together, thereby facilitating the subsequent secondary utilization of various metal wastes; at the same time, in the present application, the metal waste is first screened and then crushed, which reduces the workload of the crushing part and increases the work efficiency. The metal waste sent to the heating and separation part is basically the same size, making it easier for the metal waste to be melted and separated in the heating and separation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a front view of the present invention;

[0020] Figure 2 for Figure 1 A partial enlarged view of point B in the middle;

[0021] Figure 3 for Figure 1 Middle AA section view;

[0022] Figure 4 It is a structural schematic diagram of the fourth conveyor belt in the present invention;

[0023] Among them, 1. outer cylinder; 2. inner cylinder; 3. first conveyor roller; 4. first conveyor belt; 5. baffle; 6. water tank; 7. bearing; 8. gear ring; 9. first gear; 10. screening motor; 11. crushing box; 12. feed hopper; 13. crushing roller; 14. crushing teeth; 15. crushing motor; 16. screen; 17. connecting rod; 18. cam; 19. screen motor; 20. rotary bucket; 21. rotary tube; 22. rotary motor; 23. slide plate; 24. second conveyor roller; 25. second conveyor belt; 26. third conveyor belt; 27. third conveyor roller; 28. fourth conveyor roller; 29. ​​baffle; 30. fourth conveyor belt; 31. magnetic layer; 32. protective layer; 33. scraper; 34. solid collection box; 35. furnace body; 36. bracket; 37. crucible; 38. heating wire; 39. containing plate; 40. partition. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figure 1-4 The present invention provides a waste material recycling device for a numerical control machining center, comprising: a first conveying part, an inlet of a first screening part is arranged at the end of the running direction of the first conveying part, a second conveying part is arranged at the bottom end of the first screening part, a crushing part is arranged at the outlet end of the first screening part, a rotating part is arranged at one side of the crushing part, the crushing part is located directly above the second conveying part, a magnetic separation part is arranged above the second conveying part, and a heating separation part is arranged at the tail end of the running direction of the second conveying part;

[0027] The first screening part includes an outer cylinder 1, which is opened at both ends, and a feed discharge port is opened on the side wall of the outer cylinder 1, and the feed discharge port is located at the bottom end of the outer cylinder 1, and the outlet end of the outer cylinder 1 is lower than the inlet end of the outer cylinder 1, and an inner cylinder 2 is rotatably connected inside the outer cylinder 1, and the inner cylinder 2 is coaxially arranged with the outer cylinder 1, and a gap is left between the inner cylinder 2 and the outer cylinder 1, and both ends of the inner cylinder 2 are opened, and a plurality of feeding holes are opened circumferentially on the side wall of the inner cylinder 2.

[0028] In this device, the metal waste will first fall on the top of the first conveying part, and then the first conveying part will send the metal waste into the inner cylinder 2, the inner cylinder 2 rotates in the outer cylinder 1, so that the smaller particles fall on the top of the second conveying part, and the larger metal waste in the inner cylinder 2 falls into the crushing part, and the crushing part crushes the metal waste. The smaller part of the crushed metal waste particles falls on the top of the second conveying part, and the larger part of the particles enters the rotating part, and falls on the top of the second conveying part after secondary crushing. The iron in the metal waste is separated by the magnetic separation part, and the copper and aluminum in the metal waste enter the heating separation part for separation. The first conveying part of this device can be set at the discharge port of the five-axis machining center, or below the travel track of the CNC lathe, and the specific position is not limited.

[0029] A further optimized solution is that the first conveying part includes two first conveying rollers 3, any one of the first conveying rollers 3 is transmission-connected to the first conveying motor, a first conveying belt 4 is sleeved on the outer side walls of the two first conveying rollers 3, a plurality of water holes are opened on the first conveying belt 4, the first conveying belt 4 is inclined, a water tank 6 is arranged below the first conveying belt 4, the lower end of the first conveying belt 4 is located below the baffle 5, the baffle 5 is fixed in the machining center and is located below the tool, and the top end of the first conveying belt 4 extends into the inner tube 2.

[0030] The first conveying motor drives the first conveying roller 3 to rotate, and then drives the first conveying belt 4 to move, so as to transport the metal waste to the inner cylinder 2, and the cutting fluid falls into the water tank 6 through the water holes on the first conveying belt 4. In this way, the cutting fluid can be collected, recycled and reused after treatment to avoid waste.

[0031] A further optimized solution is that two bearings 7 are fixed to the inner wall of the outer cylinder 1, and the two bearings 7 are respectively located at the two ends of the outer cylinder 1, and the two ends of the inner cylinder 2 are respectively fixed to the inner edges of the two bearings 7, one end of the inner cylinder 2 extends out of the outer cylinder 1 and is fixed with a gear ring 8, and the gear ring 8 is fixed to the outer wall of the inner cylinder 2, and a first gear 9 is meshed at the outer edge of the gear ring 8, and the first gear 9 is fixed to the output shaft of the screening motor 10, and the screening motor 10 is fixed to the outer wall of the outer cylinder 1.

[0032] The screening motor 10 drives the first gear 9 to rotate, and the first gear 9 drives the inner cylinder 2 to rotate in the outer cylinder 1 through the gear ring 8, so that the metal waste with a particle size smaller than the feeding hole enters the gap, and then falls on the second conveying part through the discharge port, and the metal waste with a particle size larger than the feeding hole enters the crushing part for crushing. In this way, the metal waste is screened and then crushed, which can effectively reduce the workload of the crushing part and increase the working efficiency of the crushing part.

[0033] Further optimization scheme, the crushing part includes a crushing box 11, the top of the crushing box 11 is fixedly connected to a feed hopper 12, two crushing rollers 13 are rotatably connected in the crushing box 11, a plurality of crushing teeth 14 are fixedly connected to the outer wall of the crushing roller 13, and the plurality of crushing teeth 14 located at the two crushing rollers 13 are arranged alternately, and the two crushing rollers 13 are connected by a second gear transmission, and any crushing roller 13 is connected by a crushing motor 15, and the crushing motor 15 is fixedly connected to the outer wall of the crushing box 11, and a The screen 16 is slidably connected in the crushing box 11, the screen 16 is tilted, the top end of the screen 16 extends out of the crushing box 11 and is rotatably connected to a connecting rod 17, the end of the connecting rod 17 away from the screen 16 is rotatably connected to a cam 18, the cam 18 is fixed to the output shaft of a screen motor 19, the screen motor 19 is fixed to the outer wall of the crushing box 11, a square opening is provided on one side wall of the crushing box 11 away from the screen motor 19, the lower end of the screen 16 extends out of the square opening and is located directly above the rotating part.

[0034] After being crushed by the crushing roller 13, the scrap metal falls on the screen 16. The scrap metal with a particle size smaller than the mesh of the screen 16 falls on the second conveying part, and the scrap metal with a particle size larger than the mesh of the screen 16 is sent to the rotary part, and then enters the crushing box 11 again for secondary crushing. In this way, the size of the scrap metal particles falling on the second conveying part can be basically consistent, which is convenient for processing by the magnetic separation part and the heating separation part.

[0035] A further optimized solution is that the rotating part includes a rotating bucket 20, which is located below the lower end of the screen 16, and the bottom end of the rotating bucket 20 is fixedly connected to and connected to a tilted rotating pipe 21, and an auger is rotatably connected inside the rotating pipe 21, one end of the auger passes through the rotating pipe 21 and is fixedly connected to the output shaft of a rotating motor 22, and the rotating motor 22 is fixedly connected to the lower end of the rotating pipe 21 near the rotating bucket 20, the high end of the rotating pipe 21 is located directly above the slide plate 23, and the low end of the slide plate 23 is located directly above the first conveyor belt 4.

[0036] The metal scraps fall into the rotary bucket 20 and then return to the first conveyor belt under the action of the auger for secondary crushing.

[0037] A further optimized solution is that the second conveying part includes two second conveying rollers 24, any of the second conveying rollers 24 is connected to the second conveying motor, and a second conveying belt 25 is sleeved on the outer side walls of the two second conveying rollers 24, and the second conveying belt 25 is located directly below the outer cylinder 1 and the crushing box 11. A third conveying belt 26 is arranged below the second conveying belt 25, and the third conveying belt 26 is sleeved on the outer side wall of the third conveying roller 27. A plurality of baffles 29 are fixedly connected to the outer side wall of the third conveying belt 26 in interval sequence, and the baffles 29 are perpendicular to the third conveying belt 26, and any of the third conveying rollers 27 is connected to the third conveying motor, and the third conveying belt 26 is inclined. The lower end of the third conveying belt 26 is located at the end of the running direction of the second conveying belt 25, and a heating separation part is provided at the end of the running direction of the third conveying belt 26.

[0038] Further optimized solution, the magnetic separation part includes a fourth conveyor roller 28, a fourth conveyor belt 30 is sleeved on the outer wall of the fourth conveyor roller 28, a magnetic layer 31 is fixedly connected to the outer wall of the fourth conveyor belt 30, a protective layer 32 is fixedly connected to the outer wall of the magnetic layer 31, the fourth conveyor belt 30 extends out of the processing center and is provided with a scraper 33, the scraper 33 is located below the fourth conveyor belt 30 and is in sliding contact with the outer wall of the protective layer 32, and a solid collection box 34 is placed below the scraper 33. The fourth conveyor roller 28 is transmission-connected to the fourth conveying motor, and the fourth conveyor roller 28 drives the fourth conveyor belt 30 to rotate, adsorbs the iron materials in the metal waste, and then enters the solid collection box 34 under the action of the scraper 33.

[0039] Further optimized solution, the heating separation part includes a furnace body 35, the top and bottom of the furnace body 35 are connected, a bracket 36 is fixed on the inner side wall of the furnace body 35, a receiving tray 39 is arranged below the bracket 36, a crucible 37 is placed above the bracket 36, an electric heating wire 38 is arranged between the crucible 37 and the inner side wall of the furnace body 35, a plurality of liquid flow holes are opened on the bottom wall of the crucible 37, and the crucible 37 is located directly above the receiving tray 39. The metal waste transported by the third conveyor belt 26 enters the crucible 37, the aluminum in the metal waste is melted by the electric heating wire 38 and falls into the receiving tray 39, and the copper in the metal waste remains in the crucible 37, so that the copper and aluminum are separated, wherein the heating temperature of the electric heating wire 38 is 700-800 degrees Celsius.

[0040] A further optimized solution is that two partitions 40 are fixedly connected to the inner wall of the outer cylinder 1 circumferentially, the two partitions 40 are respectively located at the two ends of the outer cylinder 1 , the two partitions 40 are located between the two bearings 7 , the feed hole is located between the two partitions 40 , and the inner edge of the partition 40 is in sliding contact with the outer wall of the inner cylinder 2 .

[0041] Such an arrangement can prevent metal scrap particles from falling between the inner ring and the outer ring of the bearing 7 and causing damage to the bearing 7 .

[0042] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A waste recovery device for a CNC machining center, characterized in that: include: A first conveying part, wherein an inlet of a first screening part is arranged at the end of the first conveying part in the running direction, a second conveying part is arranged at the bottom end of the first screening part, a crushing part is arranged at the outlet end of the first screening part, a rotating part is arranged at one side of the crushing part, the crushing part is located directly above the second conveying part, a magnetic separation part is arranged above the second conveying part, and a heating separation part is arranged at the tail end of the second conveying part in the running direction; The first screening part comprises an outer cylinder (1), the outer cylinder (1) is open at both ends, a material discharge port is provided on the side wall of the outer cylinder (1), the material discharge port is located at the bottom end of the outer cylinder (1), the outlet end of the outer cylinder (1) is lower than the inlet end of the outer cylinder (1), an inner cylinder (2) is rotatably connected inside the outer cylinder (1), the inner cylinder (2) is coaxially arranged with the outer cylinder (1), a gap is left between the inner cylinder (2) and the outer cylinder (1), the inner cylinder (2) is open at both ends, and a plurality of material passing holes are circumferentially provided on the side wall of the inner cylinder (2); Two bearings (7) are fixedly connected to the inner wall of the outer cylinder (1), and the two bearings (7) are respectively located at the two ends of the outer cylinder (1). The two ends of the inner cylinder (2) are respectively fixedly connected to the inner edges of the two bearings (7). One end of the inner cylinder (2) extends out of the outer cylinder (1) and is fixedly connected to a gear ring (8). The gear ring (8) is fixedly connected to the outer wall of the inner cylinder (2). A first gear (9) is meshed at the outer edge of the gear ring (8). The first gear (9) is fixedly connected to the output shaft of a screening motor (10). The screening motor (10) is fixedly connected to the outer wall of the outer cylinder (1). The crushing part comprises a crushing box (11), the top end of the crushing box (11) is fixedly connected to a feed hopper (12), two crushing rollers (13) are rotatably connected in the crushing box (11), a plurality of crushing teeth (14) are fixedly connected to the outer side walls of the crushing rollers (13), the plurality of crushing teeth (14) located at the two crushing rollers (13) are arranged alternately, the two crushing rollers (13) are connected to each other through a second gear transmission, any one of the crushing rollers (13) is connected to a crushing motor (15), the crushing motor (15) is fixedly connected to the outer side wall of the crushing box (11), a screen (16) is arranged below the crushing roller (13), the screen The net (16) is slidably connected in the crushing box (11), the screen (16) is tilted, the top end of the screen (16) extends out of the crushing box (11) and is rotatably connected to a connecting rod (17), the end of the connecting rod (17) away from the screen (16) is rotatably connected to a cam (18), the cam (18) is fixedly connected to the output shaft of a screen motor (19), the screen motor (19) is fixedly connected to the outer wall of the crushing box (11), a side wall of the crushing box (11) away from the screen motor (19) is provided with a square opening, the lower end of the screen (16) extends out of the square opening and is located directly above the rotating portion; The rotating part comprises a rotating bucket (20), the rotating bucket (20) is located below the lower end of the screen (16), the bottom end of the rotating bucket (20) is fixedly connected to and communicated with an inclined rotating pipe (21), an auger is rotatably connected inside the rotating pipe (21), one end of the auger passes through the rotating pipe (21) and is fixedly connected to the output shaft of a rotating motor (22), the rotating motor (22) is fixedly connected to the lower end of the rotating pipe (21) close to the rotating bucket (20), the upper end of the rotating pipe (21) is located directly above the slide plate (23), and the lower end of the slide plate (23) is located directly above the first conveyor belt (4); The first conveying part comprises two first conveying rollers (3), any one of the first conveying rollers (3) is drivingly connected to a first conveying motor, a first conveying belt (4) is sleeved on the outer side walls of the two first conveying rollers (3), a plurality of water holes are opened on the first conveying belt (4), the first conveying belt (4) is inclinedly arranged, a water tank (6) is arranged below the first conveying belt (4), the lower end of the first conveying belt (4) is located below a baffle (5), the baffle (5) is fixed in the machining center and is located below the tool, and the top end of the first conveying belt (4) extends into the inner cylinder (2); The second conveying part comprises two second conveying rollers (24), any one of the second conveying rollers (24) is connected to a second conveying motor in a driving manner, a second conveying belt (25) is sleeved on the outer side walls of the two second conveying rollers (24), the second conveying belt (25) is located directly below the outer cylinder (1) and the crushing box (11), a third conveying belt (26) is arranged below the second conveying belt (25), the third conveying belt (26) is sleeved on the outer side wall of the third conveying roller (27), a plurality of baffles (29) are fixedly connected to the outer side wall of the third conveying belt (26) in an interval sequence, the baffles (29) are perpendicular to the third conveying belt (26), any one of the third conveying rollers (27) is connected to a third conveying motor in a driving manner, the third conveying belt (26) is arranged obliquely, the lower end of the third conveying belt (26) is located at the end of the running direction of the second conveying belt (25), and the heating separation part is arranged at the end of the running direction of the third conveying belt (26); The magnetic separation part comprises a fourth conveying roller (28), a fourth conveying belt (30) is sleeved on the outer wall of the fourth conveying roller (28), a magnetic layer (31) is fixedly connected to the outer wall of the fourth conveying belt (30), a protective layer (32) is fixedly connected to the outer wall of the magnetic layer (31), the fourth conveying belt (30) extends out of the machining center and is provided with a scraper (33), the scraper (33) is located below the fourth conveying belt (30) and is in sliding contact with the outer wall of the protective layer (32), and a solid collection box (34) is placed below the scraper (33); Two partitions (40) are fixedly connected to the inner wall of the outer cylinder (1) in a circumferential direction. The two partitions (40) are respectively located at the two ends of the outer cylinder (1). The two partitions (40) are located between the two bearings (7). The feed hole is located between the two partitions (40). The inner edge of the partition (40) is in sliding contact with the outer wall of the inner cylinder (2).

2. The waste recycling device for a CNC machining center according to claim 1 is characterized in that: The heating and separation part comprises a furnace body (35), the top and bottom of the furnace body (35) are connected, a bracket (36) is fixedly connected to the inner wall of the furnace body (35), a receiving plate (39) is arranged below the bracket (36), a crucible (37) is placed above the bracket (36), an electric heating wire (38) is arranged between the crucible (37) and the inner wall of the furnace body (35), a plurality of liquid flow holes are opened on the bottom wall of the crucible (37), and the crucible (37) is located directly above the receiving plate (39).

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