An automatic recycling device for NdFeB magnet waste

Abstract

The present invention relates to the field of magnet waste recycling, and in particular to an automatic recycling device for NdFeB magnet waste, including a heating cylinder and a composite iron slideway. The present invention provides an automatic recycling device for NdFeB magnet waste, which pushes and loads magnet waste into each composite iron slideway, and the magnet waste is magnetically attracted in the composite iron slideway for rotational heating and demagnetization treatment. The magnet waste that has completed the preliminary demagnetization treatment in the composite iron slideway will automatically detach from the mesh cylinder assembly for complete demagnetization treatment, and continue to fill the empty area in the composite iron slideway with magnet waste. With the characteristic that the magnet waste can automatically detach after demagnetization, the magnet waste can be continuously fed into the heating cylinder without stopping the machine, without spending extra demagnetization waiting time and cooling time. The technical problem that the demagnetization efficiency of the magnet waste cannot be low due to the inability to add materials in the middle of the demagnetization treatment of the magnet waste in batches in the heating furnace is solved.

Description

Technical Field

[0001] The invention relates to the field of magnet waste recycling, and in particular to an automatic recycling device for NdFeB magnet waste. Background Art

[0002] In the recycling process of NdFeB magnet waste, a heating furnace is needed to heat the recycled magnet waste so that the magnet waste can be demagnetized in a specified high temperature environment. For example, the waste recycling equipment for NdFeB magnet waste production described in patent CN117225860A performs demagnetization by continuously rotating and heating the recycled magnet waste in a heating furnace, which effectively avoids the accumulation of magnet waste and increases the speed of magnet waste demagnetization. The magnet waste that has completed the demagnetization treatment can automatically detach from the heating furnace. However, the equipment can only demagnetize magnet waste in batches and cannot perform demagnetization treatment on the magnet waste in batches. Material is added to the heating furnace during the process, and there are many different types of recycled magnet waste in the same batch of demagnetization treatment process, and the magnetic force of each magnet waste is different. Therefore, the final completion time of the demagnetization work depends on the waste with the strongest magnetic force and the most difficult to demagnetize. Each batch requires all magnet waste to complete the demagnetization treatment before the next batch of magnet waste can be loaded and demagnetized. During this period, the heating furnace needs to be shut down for cooling to prevent high temperature damage when the furnace is opened. Only then can the staff operate the loading work of the next batch of magnet waste, resulting in low efficiency in the demagnetization treatment of magnet waste. Summary of the invention

[0003] In order to overcome the disadvantage that during the demagnetization treatment of magnet waste in batches by a heating furnace, it is impossible to add materials in the middle, resulting in low demagnetization efficiency of the magnet waste, the present invention provides an automatic recycling device for NdFeB magnet waste.

[0004] The technical solution of the present invention is: an automatic recycling device for NdFeB magnet waste, comprising a fixed frame, a heating cylinder, a first cylinder cover, a second cylinder cover, a high-temperature imaging device, a feed pipe, a push rod, a push block, a first rotating assembly, a composite iron slideway, a second rotating assembly and a mesh cylinder assembly; a heating cylinder is fixedly connected to the fixed frame, and the heating cylinder is composed of an insulating cylinder body and a heater for controlling the temperature rise inside the insulating cylinder body; the first cylinder cover and the second cylinder cover are fixedly connected to the heating cylinder in sequence by bolts; a feed pipe is fixedly connected to the fixed frame; the feed pipe passes through the first cylinder cover, and the first cylinder cover is fixedly connected to the feed pipe; the feed pipe A push block is inserted in the tube; a push rod is fixed on the push block; a first rotating component is connected in the heating cylinder; a number of composite iron slideways are equidistantly connected around the first rotating component; two symmetrical top plate structures are provided on the composite iron slideway; a second rotating component is connected in the heating cylinder; a mesh cylinder component is connected in the second rotating component; both the first rotating component and the second rotating component are configured as inclined structures, and the inclination angle of the first rotating component is greater than the inclination angle of the second rotating component; a high-temperature imaging device is installed on the first cylinder cover; an observation gap is left between the two top plate structures of the composite iron slideway.

[0005] More preferably, the first rotating assembly includes a first tilting frame, a first rotating frame, a first spur gear, a first driving motor and a second spur gear; the first tilting frame is fixedly connected in the heating cylinder; the first rotating frame is rotatably connected in the first tilting frame; the first net cylinder is fixedly connected to the first rotating frame, and the first net cylinder uses a non-ferromagnetic alloy steel material; the first rotating frame is fixedly connected to the first spur gear; the first driving motor is installed on the heating cylinder; the output shaft of the first driving motor is fixedly connected to the second spur gear; the second spur gear is meshed with the first spur gear; the first rotating frame is fixedly connected to all the composite iron slideways.

[0006] More preferably, the second rotating assembly includes a second tilting frame, a second rotating frame, a third spur gear, a second drive motor and a fourth spur gear; the second tilting frame is fixedly connected in the heating cylinder; the second rotating frame is rotatably connected in the second tilting frame; the third spur gear is fixedly connected to the second rotating frame; the second drive motor is installed on the heating cylinder; the output shaft of the second drive motor is fixedly connected to the fourth spur gear; the fourth spur gear is meshed with the third spur gear; and the second rotating frame is connected to the net cylinder assembly.

[0007] More preferably, the high temperature imaging device uses a high temperature endoscopic camera.

[0008] More preferably, a recovery box is fixedly connected to the fixed frame; and a discharge pipe is connected between the recovery box and the second cylinder cover.

[0009] More preferably, the composite iron slideway is composed of an insulating frame plate and an alloy steel plate; the alloy steel plate is located on a side of the insulating frame plate away from the top plate structure.

[0010] More preferably, a heat insulating pad is fixedly connected to one side of the push block close to the heating cylinder.

[0011] More preferably, a second net cylinder is fixedly connected to the first cylinder cover, the second net cylinder is made of alloy steel material, and the second net cylinder is located between all the composite iron slideways.

[0012] More preferably, the net cylinder assembly includes a third net cylinder and a fourth net cylinder, the third net cylinder is made of ferromagnetic alloy steel material; the fourth net cylinder is made of non-ferromagnetic alloy steel material; the third net cylinder and the fourth net cylinder are fixedly connected in the second rotating frame; the fourth net cylinder is located inside the third net cylinder, and there is an annular gap between the third net cylinder and the fourth net cylinder.

[0013] More preferably, an intercepting net is fixedly connected to a side of the fourth net cylinder close to the second net cylinder.

[0014] The beneficial effects of the present invention are as follows: the present invention provides an automatic recycling device for NdFeB magnet waste, wherein a first rotating assembly and a second rotating assembly with different inclinations are arranged in a heating cylinder, and the first rotating assembly and the second rotating assembly respectively drive the composite iron slide and the mesh cylinder assembly to rotate. During the process, the magnet waste that has completed the preliminary demagnetization treatment in the composite iron slide will automatically separate from the mesh cylinder assembly for complete demagnetization treatment, and the staff will regularly use a push rod to push the magnet waste in the composite iron slide, so that the magnet waste that has completed the preliminary demagnetization treatment in the composite iron slide can separate from the mesh cylinder assembly for complete demagnetization treatment, and continue to fill the magnet waste into the empty area in the composite iron slide. With the characteristic that the magnet waste can automatically separate after demagnetization, the magnet waste can be continuously loaded into the heating cylinder without stopping the machine, without spending extra demagnetization waiting time and cooling time; it solves the technical problem that during the process of demagnetizing magnet waste in batches in the heating furnace, it is impossible to add materials in the middle, resulting in low demagnetization efficiency of the magnet waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 It is a cross-sectional view of the three-dimensional structure of the heating tube of the present invention;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the first rotating frame of the present invention;

[0018] Figure 4 It is a schematic diagram of the spatial position structure of the first net cylinder and the second net cylinder of the present invention;

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the composite iron slideway of the present invention;

[0020] Figure 6 It is an exploded view of the three-dimensional structure of the second rotating frame and the net cylinder assembly of the present invention;

[0021] Figure 7 It is a right view of the three-dimensional structure of the second rotating frame and the net cylinder assembly of the present invention;

[0022] Figure 8 It is a front view of the three-dimensional structure of the first net cylinder, the second net cylinder and the net cylinder assembly of the present invention;

[0023] Fig. 9 It is a schematic diagram of the three-dimensional structure of the push rod and the push block of the present invention.

[0024] Markings in the figure: 1-fixed frame, 2-heating cylinder, 21-first cylinder cover, 22-second cylinder cover, 23-high temperature imaging equipment, 24-feeding pipe, 25-push rod, 26-push block, 27-insulating pad, 31-first tilting frame, 32-first rotating frame, 33-first spur gear, 34-first drive motor, 35-second spur gear, 4-composite iron slide, 41-insulating frame plate, 42-alloy steel plate, 411-top plate, 50-first net cylinder, 51-second net cylinder, 52-third net cylinder, 53-fourth net cylinder, 54-intercepting net, 61-second tilting frame, 62-second rotating frame, 63-third spur gear, 64-second drive motor, 65-fourth spur gear, 71-recovery box, 72-discharge pipe. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings. Example

[0026] An automatic recycling device for NdFeB magnet waste, such as Figure 1-Figure 9As shown, it includes a fixed frame 1, a heating cylinder 2, a first cylinder cover 21, a second cylinder cover 22, a high-temperature imaging device 23, a feed pipe 24, a push rod 25, a push block 26, a heat insulation pad 27, a first rotating assembly, a composite iron slide 4, a second rotating assembly and a mesh cylinder assembly; the fixed frame 1 is fixedly connected to the heating cylinder 2, and the heating cylinder 2 is composed of a heat-insulating cylinder body and a heater for controlling the temperature rise inside the heat-insulating cylinder body; the first cylinder cover 21 and the second cylinder cover 22 are fixedly connected to the heating cylinder 2 in sequence by bolts; the fixed frame 1 is fixedly connected to the feed pipe 24; the feed pipe 24 passes through the first cylinder cover 21, and the first cylinder cover 21 is fixedly connected to the feed pipe 24; a push block 26 is inserted in the feed pipe 24; the push rod 25 is fixedly connected to the push block 26; the push block 26 is fixedly connected to the heat insulation pad 27 on the side close to the heating cylinder 2; the left side of the heating cylinder 2 is connected to the first rotating assembly Rotating assembly; a number of composite iron slideways 4 are equidistantly connected around the first rotating assembly, and the composite iron slideways 4 are made of alloy steel; each composite iron slideway 4 is provided with two symmetrical top plates 411 structures; a second rotating assembly is connected to the right side of the heating cylinder 2; a mesh cylinder assembly is connected to the second rotating assembly; the first rotating assembly and the second rotating assembly are both configured as inclined structures toward the lower right, and the inclination angle of the first rotating assembly is greater than the inclination angle of the second rotating assembly; a high-temperature imaging device 23 is installed on the first cylinder cover 21; an observation gap is left between the two top plates 411 structures of each composite iron slideway 4; the composite iron slideway 4 is composed of a non-ferromagnetic insulating frame plate 41 and a ferromagnetic alloy steel plate 42; the alloy steel plate 42 is located on the side of the insulating frame plate 41 away from the top plate 411 structure.

[0027] like Figure 2 and Figure 3 As shown, the first rotating assembly includes a first tilting frame 31, a first rotating frame 32, a first spur gear 33, a first driving motor 34 and a second spur gear 35; the first tilting frame 31 is fixedly connected in the heating tube 2; the first rotating frame 32 is rotatably connected in the first tilting frame 31; the first net cylinder 50 is fixedly connected to the first rotating frame 32, and the first net cylinder 50 uses a non-ferromagnetic alloy steel material; the first spur gear 33 is fixedly connected to the first rotating frame 32; the first driving motor 34 is installed on the heating tube 2; the output shaft of the first driving motor 34 is fixedly connected to the second spur gear 35; the second spur gear 35 is meshed with the first spur gear 33; the first rotating frame 32 is fixedly connected to all the composite iron slideways 4.

[0028] like Figure 2As shown, the second rotating assembly includes a second tilting frame 61, a second rotating frame 62, a third spur gear 63, a second driving motor 64 and a fourth spur gear 65; the second tilting frame 61 is fixedly connected in the heating cylinder 2; the second rotating frame 62 is rotatably connected in the second tilting frame 61; the third spur gear 63 is fixedly connected to the second rotating frame 62; the second driving motor 64 is installed on the heating cylinder 2; the output shaft of the second driving motor 64 is fixedly connected to the fourth spur gear 65; the fourth spur gear 65 is meshed with the third spur gear 63; the second rotating frame 62 is connected to the mesh cylinder assembly.

[0029] like Figure 1 and Figure 3 As shown, the high-temperature imaging device 23 uses a high-temperature endoscope camera, which can observe the position of each magnet in the composite iron slide 4 and the current heating temperature; a recovery box 71 is fixed to the fixed frame 1; a discharge pipe 72 is connected between the recovery box 71 and the second cylinder cover 22.

[0030] The working steps of the automatic recycling device for NdFeB magnet waste of the present invention are as follows.

[0031] First, the staff operates the first driving motor 34 to drive the second spur gear 35 to rotate, and the second spur gear 35 meshes with the first spur gear 33 to drive the first rotating frame 32 to rotate, and the first rotating frame 32 rotates each composite iron slide 4 one by one to align with the discharge pipe 24. Whenever a composite iron slide 4 is aligned with the discharge pipe 24, the staff turns off the first driving motor 34 to stop driving the first rotating frame 32 and the composite iron slide 4 to rotate, and the staff holds the push rod 25 to pull out the push block 26, and then loads the magnet waste into the discharge pipe 24. After a sufficient amount of magnet waste is loaded, the push rod 25 and the push block 26 are inserted back into the discharge pipe 24, and multiple recycled magnet wastes are pushed along the discharge pipe 24. The material tube 24 is pushed into various areas of the insulating frame plate 41 of the composite iron slide 4. Since the insulating frame plate 41 is between the alloy steel plate 42 and the magnet waste, the magnet waste can be adsorbed on the insulating frame plate 41 by the magnetic attraction from the alloy steel plate 42, and the magnetic attraction to the magnet waste will also be weakened by the insulating frame plate 41, so that the staff can relatively easily push the magnet waste to move along the insulating frame plate 41, and the staff can also use the high-temperature imaging equipment 23 to observe the filling situation of the magnet waste in the composite iron slide 4, check whether the magnet waste in the composite iron slide 4 is full, and complete the magnet waste loading work in each composite iron slide 4 in turn.

[0032] After completing the loading of all the magnetic waste materials in the composite iron slides 4, the staff turns on the first driving motor 34 to continuously rotate the first rotating frame 32, and the first rotating frame 32 drives the magnetic waste materials in each composite iron slide 4 to rotate slowly. At the same time, the heating cylinder 2 heats the magnetic waste materials in the composite iron slide 4, so that the magnetic waste materials are heated with the rotation of the composite iron slide 4 for preliminary demagnetization treatment, and the staff inserts the push block 26 back into the discharge pipe 24. The heat insulation pad 27 on the push block 26 can be sealed between the discharge pipe 24 and the heating cylinder 2 in the form of a shielding valve to prevent a large amount of heat and hot air in the heating cylinder 2 from rushing into the discharge pipe 24, causing the temperature of the discharge pipe 24 to be too high, resulting in scalding of the staff when filling the magnetic waste materials into the discharge pipe 24. In this process, the magnetic force of the magnetic waste materials in each composite iron slide 4 is gradually weakened and the preliminary demagnetization treatment is gradually completed, so that the magnetic waste materials in the composite iron slide 4 which is in an inclined state as a whole are subjected to the action of gravity and fall out of the composite iron slide one by one. 4 automatically slides out of the exit away from the first cylinder cover 21 and slides onto the net cylinder assembly; when demagnetization starts, the second driving motor 64 drives the fourth spur gear 65 to rotate, and the fourth spur gear 65 meshes with the third spur gear 63 to drive the second rotating frame 62 and the net cylinder assembly to rotate. Since the inclination angle of the second rotating frame 62 and the net cylinder assembly relative to the ground is smaller than the inclination angle of the first rotating frame 32 and the composite iron slideway 4 relative to the ground, the magnet waste material that falls off the net cylinder assembly will continue to be magnetically attracted to the net cylinder assembly and will not directly slide to the end along the net cylinder assembly, and will be completely demagnetized with the rotation heating of the net cylinder assembly. The rotation heating can make the waste material heated more quickly and fully, and prevent the waste material from accumulating in the same position. Finally, the magnet waste material that has completed the complete demagnetization treatment loses its magnetism and automatically falls off from the inclined net cylinder assembly, slides along the net cylinder assembly into the discharge pipe 72, and automatically falls into the recovery box 71 along the discharge pipe 72, completing the automatic recovery of the magnet waste material that has lost its magnetism.

[0033] In addition, since the original magnetic force of the magnetic waste in the composite iron slide 4 is different, as the magnetic waste in the composite iron slide 4 is continuously demagnetized, some of the magnetic waste will complete the preliminary demagnetization first, and the magnetic waste that has completed the preliminary demagnetization is blocked by the remaining magnetic waste that has not completed the preliminary demagnetization in the sliding direction of the composite iron slide 4 and cannot slide down. However, when the first rotating frame 32 drives the composite iron slide 4 to rotate upward to the state where the top plate 411 structure is facing downward, the magnetic waste that has completed the preliminary demagnetization first in the composite iron slide 4 will fall downward through the observation gap between the two top plate 411 structures, and the fallen magnetic waste will slide downward along the first mesh tube 50 onto the mesh tube assembly for the next step of complete demagnetization, allowing the magnetic waste that has completed the preliminary demagnetization in the composite iron slide 4 to escape from the outside faster.

[0034] Whenever the staff observes through the high-temperature imaging equipment 23 that all or most of the magnets in a composite iron slide 4 have completed the preliminary demagnetization treatment and automatically fallen off, the staff controls the first drive motor 34 to drive the first rotating frame 32 to rotate the composite iron slide 4 to align with the discharge pipe 24. After the staff turns off the first drive motor 34, the staff pushes new magnet waste into the composite iron slide 4 along the discharge pipe 24. If the remaining magnet waste still has strong magnetism, it is difficult to separate from the composite iron slide 4 under pushing. If the magnetism itself is also relatively weak, it will also separate under pushing. With the characteristic that the magnet waste can automatically detach after demagnetization, the magnet waste can be continuously fed into the heating cylinder 2 without stopping, without spending extra demagnetization waiting time and cooling time. Example

[0035] On the basis of Example 1, Figure 3-Figure 8 As shown, the net cylinder assembly of this embodiment includes a third net cylinder 52 and a fourth net cylinder 53. The third net cylinder 52 is made of ferromagnetic alloy steel material; the fourth net cylinder 53 is made of non-ferromagnetic alloy steel material; the third net cylinder 52 and the fourth net cylinder 53 are fixedly connected in the second rotating frame 62; the fourth net cylinder 53 is located inside the third net cylinder 52, and there is an annular gap between the third net cylinder 52 and the fourth net cylinder 53; the fourth net cylinder 53 is fixedly connected to an intercepting net 54 on the side close to the second net cylinder 51.

[0036] When the magnet waste that has completed the preliminary demagnetization and recycling treatment is separated from the composite iron slide 4, the magnet waste separated from the composite iron slide 4 is intercepted by the interception net 54 and falls into the annular gap between the third net cylinder 52 and the fourth net cylinder 53, so that the magnet waste that has not been completely demagnetized is magnetically attracted to the third net cylinder 52 for complete demagnetization treatment. As the magnet waste located on the third net cylinder 52 gradually completes the demagnetization, the magnet waste will gradually slide and move along the inclined third net cylinder 52 toward the discharge pipe 72.

[0037] When the third mesh tube 52 drives the magnetic waste to rotate upward to the area above the heating tube 2, if the magnetic waste has just completed the demagnetization process, the demagnetized magnetic waste will detach from the third mesh tube 52 and fall downward onto the fourth mesh tube 53, and then slide outward along the annular gap between the third mesh tube 52 and the fourth mesh tube 53, so as to prevent the magnetic waste rotated to the area above the heating tube 2 from directly falling on the lower area of ​​the third mesh tube 52 when falling off, causing the structure of the third mesh tube 52 to be damaged, thereby providing anti-fall protection for the third mesh tube 52.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automated recycling device for NdFeB magnet waste, comprising: a fixing frame (1); A heating cylinder (2) is fixedly connected to the fixing frame (1), and the heating cylinder (2) is composed of a heat-insulating cylinder body and a heater for controlling the temperature rise inside the heat-insulating cylinder body; a first cylinder cover (21) and a second cylinder cover (22) are fixedly connected to the heating cylinder (2) in sequence by bolts; Features: The heating tube (2) further comprises a feed tube (24), a push rod (25), a push block (26), a first rotating assembly, a composite iron slideway (4), a second rotating assembly and a net cylinder assembly; the feed tube (24) is fixedly connected to the fixed frame (1); the feed tube (24) passes through the first cylinder cover (21), and the first cylinder cover (21) is fixedly connected to the feed tube (24); a push block (26) is inserted into the feed tube (24); a push rod (25) is fixedly connected to the push block (26); the first rotating assembly is connected to the heating cylinder (2); a plurality of composite iron slideways are equidistantly connected around the first rotating assembly (4), the composite iron slideway (4) is made of alloy steel material; two mutually symmetrical top plates (411) structures are provided on the composite iron slideway (4); a second rotating assembly is connected inside the heating cylinder (2); a net cylinder assembly is connected inside the second rotating assembly; the first rotating assembly and the second rotating assembly are both configured as inclined structures, and the inclination angle of the first rotating assembly is greater than the inclination angle of the second rotating assembly; a high-temperature imaging device (23) is installed on the first cylinder cover (21); an observation gap is left between the two top plates (411) structures of the composite iron slideway (4); The first rotating assembly comprises a first tilting frame (31), a first rotating frame (32), a first spur gear (33), a first driving motor (34) and a second spur gear (35); the first tilting frame (31) is fixedly connected inside the heating cylinder (2); the first rotating frame (32) is rotatably connected inside the first tilting frame (31); the first net cylinder (50) is fixedly connected to the first rotating frame (32), and the first net cylinder (50) is made of a non-ferromagnetic alloy steel material; the first rotating frame (32) is fixedly connected to the first spur gear (33); the first driving motor (34) is installed on the heating cylinder (2); the output shaft of the first driving motor (34) is fixedly connected to the second spur gear (35); the second spur gear (35) is meshed with the first spur gear (33); the first rotating frame (32) is fixedly connected to all the composite iron slideways (4); The second rotating assembly comprises a second tilting frame (61), a second rotating frame (62), a third spur gear (63), a second driving motor (64) and a fourth spur gear (65); the second tilting frame (61) is fixedly connected inside the heating cylinder (2); the second rotating frame (62) is rotatably connected inside the second tilting frame (61); the third spur gear (63) is fixedly connected to the second rotating frame (62); the second driving motor (64) is mounted on the heating cylinder (2); the output shaft of the second driving motor (64) is fixedly connected to the fourth spur gear (65); the fourth spur gear (65) is meshed with the third spur gear (63); the second rotating frame (62) is connected to the net cylinder assembly; The net cylinder assembly comprises a third net cylinder (52) and a fourth net cylinder (53); the third net cylinder (52) is made of an alloy steel material having ferromagnetism; the fourth net cylinder (53) is made of an alloy steel material having no ferromagnetism; the third net cylinder (52) and the fourth net cylinder (53) are fixedly connected inside the second rotating frame (62); the fourth net cylinder (53) is located inside the third net cylinder (52); and an annular gap exists between the third net cylinder (52) and the fourth net cylinder (53); An interception net (54) is fixedly connected to one side of the fourth net cylinder (53) close to the second net cylinder (51).

2. The automatic recycling device for NdFeB magnet waste according to claim 1, characterized in that: The high temperature imaging device (23) uses a high temperature endoscope camera.

3. The automatic recycling device for NdFeB magnet waste according to claim 1, characterized in that: A recovery box (71) is fixedly connected to the fixed frame (1); a discharge pipe (72) is connected between the recovery box (71) and the second cylinder cover (22).

4. The automatic recycling device for NdFeB magnet waste according to claim 1, characterized in that: The composite iron slideway (4) is composed of an insulating frame plate (41) and an alloy steel plate (42); the alloy steel plate (42) is located on a side of the insulating frame plate (41) away from the top plate (411) structure.

5. The automatic recycling device for NdFeB magnet waste according to claim 4, characterized in that: A heat insulating pad (27) is fixedly connected to one side of the push block (26) close to the heating cylinder (2).

6. The automatic recycling device for NdFeB magnet waste according to claim 1, characterized in that: A second net cylinder (51) is fixedly connected to the first cylinder cover (21); the second net cylinder (51) is made of a non-ferromagnetic alloy steel material, and the second net cylinder (51) is located between all the composite iron slideways (4).

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