CN115255010A

CN115255010A - Forming equipment of neodymium iron boron tombarthite permanent magnetism

Info

Publication number: CN115255010A
Application number: CN202210709799.6A
Authority: CN
Inventors: 叶杨欣; 黄永芳
Original assignee: Ganzhou Xinzhou Permanent Magnet Material Co ltd
Current assignee: Ganzhou Xinzhou Permanent Magnet Material Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-11-01

Abstract

The invention relates to a forming device, in particular to a forming device for a neodymium iron boron rare earth permanent magnet. The invention aims to provide forming equipment for a neodymium iron boron rare earth permanent magnet, which is convenient for people to take out the magnet. The invention provides a forming device of a neodymium iron boron rare earth permanent magnet, which comprises a support frame, a cylinder, a pressing plate, a mold and the like, wherein the cylinder is connected in the middle of the upper part of the support frame, the pressing plate used for extrusion forming of neodymium iron boron rare earth permanent magnet alloy powder is connected to the bottom of a telescopic rod of the cylinder, the mold is connected in the middle of the support frame, and the mold is positioned right below the pressing plate. According to the automatic blanking device, the air cylinder is used as a driving force, the connecting rod can be driven to move upwards, the connecting rod can extrude the wedge-shaped block to move outwards, the wedge-shaped block drives the baffle to move outwards to be opened, and at the moment, the magnet formed in the die can fall downwards into the collecting frame through the blanking frame, so that automatic blanking can be realized, and the automatic blanking device is convenient to use.

Description

Forming equipment of neodymium iron boron tombarthite permanent magnetism

Technical Field

The invention relates to a forming device, in particular to a forming device for a neodymium iron boron rare earth permanent magnet.

Background

The neodymium magnet is also called a neodymium-iron-boron magnet, and is a tetragonal crystal formed of neodymium, iron, and boron. In 1982, the neodymium magnet was discovered by a person living in the special metal of Sumitomo. The magnetic energy product of the magnet is larger than that of a samarium cobalt magnet, and the magnet is the substance with the largest magnetic energy product all over the world at that time.

Current forming device when using, pour neodymium iron boron tombarthite permanent magnetic alloy powder into the mould earlier usually, then carry out extrusion to neodymium iron boron tombarthite permanent magnetic alloy powder through the pneumatic cylinder, need the manual work to take out after the magnet shaping, but magnet after the shaping can closely laminate with the mould, and people are difficult to take out the magnet after the shaping to lead to taking out magnet speed comparatively slowly, influence work efficiency.

In summary, there is a need for a forming apparatus for nd-fe-b rare earth permanent magnet that is convenient for people to take out magnet, so as to solve the above problems.

Disclosure of Invention

The invention aims to provide forming equipment for a neodymium iron boron rare earth permanent magnet, which is convenient for people to take out the magnet, and aims to overcome the defect that the formed magnet is difficult to take out due to the fact that the formed magnet is tightly attached to a mold because the formed magnet needs to be taken out manually when an existing forming device is used.

The invention is realized by the following technical approaches:

the utility model provides a former of neodymium iron boron tombarthite permanent magnetism, which comprises a supporting fram, the cylinder, a pressing plate, the mould, unloading frame and collection frame, support frame upper portion intermediate junction has the cylinder, the telescopic link bottom of cylinder is connected with and is used for the clamp plate with neodymium iron boron tombarthite permanent magnetism alloy powder extrusion, the support frame middle part is connected with the mould, the mould is located the clamp plate under, the support frame sub-unit connection has the unloading frame, the unloading frame is located the mould under, the support frame lower part is placed and is used for carrying out the collection frame of collecting to the magnet after the shaping, it is located unloading frame below to collect the frame, still including blanking subassembly and strutting the subassembly, be provided with on the mould and be used for making the blanking subassembly that the magnet after the shaping down dropped, the telescopic link lower part of cylinder is provided with and is used for propping the subassembly that struts the effect.

Optionally, the blanking assembly includes first guide rods, a baffle and a first spring, the front and rear sides of the lower portion of the mold are connected with the first guide rods in a bilateral symmetry manner, the baffle is slidably disposed between the two first guide rods on the left side, the baffle is also slidably disposed between the two first guide rods on the right side, the baffle blocks the bottom of the mold, the first springs are wound on the four first guide rods, and two ends of the first spring are connected with the baffle and the first guide rods respectively.

Optionally, the strutting assembly comprises a connecting rod, second guide rods, a wedge block and a second spring, the left side and the right side of the telescopic rod of the air cylinder are both connected with the connecting rod, the front side and the back side of the two baffle outsides are both provided with the second guide rods in a sliding manner, the inner sides of the left two second guide rods are both connected with the wedge block, the inner sides of the right two second guide rods are both connected with the wedge block, the connecting rod moves downwards to be in contact with the wedge block, the second springs are wound on the four second guide rods, and two ends of each second spring are respectively connected with the baffle and the wedge block.

Optionally, still including the promotion subassembly that is used for magnet after the extrusion to drop down, the promotion subassembly is including the push rod, the groove section of thick bamboo, first contact lever and third spring, the equal rotary type in both sides is provided with the push rod around mould upper portion, two push rod left and right sides all are connected with the groove section of thick bamboo, the equal bilateral symmetry slidingtype in both sides is provided with first contact lever around the mould, four first contact lever upper ends all slide in adjacent groove section of thick bamboo, the baffle can contact with first contact lever toward the outside motion, be connected with the third spring between first contact lever and the mould.

Optionally, the buffer assembly is used for playing a buffering role and comprises a third guide rod, buffer blocks and a fourth spring, the left side and the right side of the inner wall of the blanking frame are evenly connected with the three third guide rods at intervals, the buffer blocks are arranged on the inner sides of the six third guide rods in a sliding mode, the fourth spring is wound on the six third guide rods, and two ends of the fourth spring are connected with the blanking frame and the buffer blocks respectively.

Optionally, still including being used for trembling flat subassembly of trembling with neodymium iron boron tombarthite permanent magnet alloy powder, tremble flat subassembly including the second contact lever, the fifth spring, the third contact lever, sixth spring and strike the piece, the equal slidingtype in support frame middle part left and right sides is provided with the second contact lever, all be connected with the fifth spring between the front and back both sides of two second contact lever bottoms and the support frame, the equal front and back symmetry slidingtype in the left and right sides on mould upper portion is provided with the third contact lever, left third contact lever all contacts with left second contact lever, the third contact lever on right side all contacts with the second contact lever on right side, four third contact lever inboards all are connected with strikes the piece, strike the piece and can contact with the mould towards the inside motion, strike and be connected with the sixth spring between piece and the mould.

Optionally, the automatic feeding device further comprises a locking assembly used for clamping the two baffles, the locking assembly comprises a pull rod, a clamping block and a seventh spring, the pull rod is arranged on the front side of the upper portion of the feeding frame in a sliding mode, the clamping block is connected to the top of the pull rod, the two baffles are clamped by the clamping block, the seventh spring is wound on the pull rod, and two ends of the seventh spring are connected with the clamping block and the feeding frame respectively.

Optionally, the first spring is a compression spring.

Compared with the prior art, the invention has the following advantages:

1. according to the automatic blanking device, the air cylinder is used as a driving force, the connecting rod can be driven to move upwards, the connecting rod can extrude the wedge-shaped block to move outwards, the wedge-shaped block drives the baffle to move outwards to be opened, and at the moment, the magnet formed in the die can fall downwards into the collecting frame through the blanking frame, so that automatic blanking can be realized, and the automatic blanking device is convenient to use.

2. The groove drum positively rotates to drive the push rod to rotate towards the inner side, and the push rod rotates towards the inner side to extrude the magnet formed in the die to drop downwards, so that the magnet formed in the die can drop downwards more quickly, and the magnet formed in the die is prevented from being stuck to the inner wall of the die.

3. When the magnet after the shaping down dropped, the magnet after the shaping can extrude the buffer block toward the outside motion, and the compression of fourth spring to can slow down the speed that drops of magnet, play the effect of buffering, and then can avoid the magnet after the shaping to take place to damage.

Drawings

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

Fig. 2 is a partial sectional structural view of the present invention.

FIG. 3 is a schematic view of the installation of the blanking assembly and the spreading assembly of the present invention.

Fig. 4 is an enlarged schematic view of the structure at a of the present invention.

Fig. 5 is a schematic partial perspective view of the blanking assembly and the spreading assembly of the present invention.

Fig. 6 is a schematic view of the installation of the pushing assembly of the present invention.

Fig. 7 is a partial perspective view of the pushing assembly of the present invention.

FIG. 8 is a schematic view of the installation of the cushioning assembly of the present invention.

Fig. 9 is an enlarged schematic view of the present invention at B.

Fig. 10 is a schematic view of the installation of the shake-out component of the present invention.

Fig. 11 is a schematic view of the installation of the locking assembly of the present invention.

The meaning of the reference symbols in the figures: 1: support frame, 2: cylinder, 3: pressing plate, 4: mold, 5: blanking frame, 6: collection frame, 7: blanking assembly, 71: first guide bar, 72: baffle, 73: first spring, 8: distraction assembly, 81: connecting rod, 82: second guide bar, 83: wedge block, 84: second spring, 9: pushing assembly, 91: push rod, 92: grooved drum, 93: first contact bar, 94: third spring, 10: buffer assembly, 101: third guide bar, 102: buffer block, 103: fourth spring, 11: shake flat subassembly, 111: second contact bar, 112: fifth spring, 113: third contact bar, 114: sixth spring, 115: knocking block, 12: locking assembly, 121: pull rod, 122: a latch, 123: and a seventh spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The utility model provides a former of neodymium iron boron tombarthite permanent magnetism, refer to and show 1-5, including support frame 1, cylinder 2, clamp plate 3, mould 4, unloading frame 5, collect frame 6, blanking subassembly 7 and

strut subassembly

8, 1 upper portion intermediate junction of support frame has cylinder 2, the welding of the telescopic link bottom of cylinder 2 has clamp plate 3, clamp plate 3 down moves can be with neodymium iron boron tombarthite permanent magnetism alloy powder extrusion, 1 middle part welding of support frame has mould 4, mould 4 is located clamp plate 3 under, 1 sub-unit connection of support frame has unloading frame 5, unloading frame 5 is located mould 4 under, collect frame 6 has been placed to 1 lower part of support frame, collect frame 6 is located unloading frame 5 below, the magnet after the shaping can drop in collecting frame 6, be provided with blanking subassembly 7 on the mould 4, the telescopic link lower part of cylinder 2 is provided with struts subassembly 8.

Referring to fig. 1 and 3, the blanking assembly 7 includes a first guide rod 71, a baffle 72 and a first spring 73, the first guide rod 71 is welded on the front and rear sides of the lower portion of the mold 4 in a bilateral symmetry manner, the baffle 72 is slidably disposed between the two first guide rods 71 on the left side, the baffle 72 is also slidably disposed between the two first guide rods on the right side, the baffle 72 blocks the bottom of the mold 4, when the baffle 72 is opened by moving toward the outside, the molded magnet can drop downward, the first spring 73 is wound on each of the four first guide rods 71, two ends of the first spring 73 are respectively connected with the baffle 72 and the first guide rods 71, the first spring 73 is a compression spring, and the compression spring has a certain elastic force and can drive the baffle 72 to reset.

Referring to fig. 1, fig. 3, fig. 4 and fig. 5, the opening assembly 8 includes a connecting rod 81, a second guide rod 82, a wedge block 83 and a second spring 84, the telescopic rod of the cylinder 2 is connected with the connecting rod 81 on the left and right sides, the second guide rods 82 are symmetrically arranged on the outer sides of the two baffles 72 in a front-back sliding manner, the wedge block 83 is connected on the inner sides of the two second guide rods 82 on the left side, the wedge block 83 is connected on the inner sides of the two second guide rods 82 on the right side, the connecting rod 81 moves downwards to contact with the wedge block 83, the wedge block 83 moves outwards to drive the baffles 72 to move outwards to open, the second springs 84 are wound on the four second guide rods 82, and the two ends of the second springs 84 are respectively connected with the baffles 72 and the wedge block 83.

When needs use this equipment, people place the assigned position with this equipment earlier, then pour into mould 4 with appropriate amount neodymium iron boron rare earth permanent magnetism alloy powder, then people start cylinder 2, control cylinder 2's telescopic link extension, drive clamp plate 3 and connecting rod 81 downstream, when connecting rod 81 and wedge 83 contact, connecting rod 81 can extrude wedge 83 toward the outside motion, second spring 84 compresses, wedge 83 moves toward the outside and drives second guide arm 82 toward the outside, when connecting rod 81 crosses wedge 83, second spring 84 reconversion, drive wedge 83 and second guide arm 82 move to the inside and reset, simultaneously, clamp plate 3 moves down and can carry out extrusion to neodymium iron boron permanent magnetism alloy powder in mould 4, then people control cylinder 2's telescopic link shortens, drive clamp plate 3 and connecting rod 81 upward, when connecting rod 81 and wedge 83 contact, connecting rod 81 can extrude wedge 83 toward the outside motion, wedge 83 drives second guide arm 82 and baffle 72 toward the outside motion and open when people's control cylinder 2, first spring 73 moves, when people's lower part collection baffle frame is connected with wedge 83 and the collection baffle frame 6, make the interior permanent magnetism alloy frame of the collection of the lower part of the compression of the mould 4 collect the baffle 6 again through the interior permanent magnetism alloy of the lower part of the return of the compression spring 73, make the interior permanent magnetism alloy frame of the interior permanent magnetism block of the compression of the mould 4 and the interior permanent magnetism alloy of the collection of the interior permanent magnetism block of the mould 4 that people's collection baffle 6 again, make this moment, when people, then the interior permanent magnetism block of the compression of the interior permanent magnetism block of the lower part of the compression of the interior permanent magnetism block 6 again, the interior permanent magnetism block of the compression of the mould 4, the compression of the interior permanent magnetism block 6, the interior permanent magnetism block of the lower part of the mould 4, the compression of this moment, the compression of the mould 4, the interior permanent magnetism block of the compression of the interior permanent magnetism block 6 again, the interior permanent magnetism block of the compression of the mould 4.

Example 2

On the basis of embodiment 1, refer to fig. 1, fig. 6 and fig. 7, still include pushing assembly 9, pushing assembly 9 includes push rod 91, grooved drum 92, first contact rod 93 and third spring 94, push rod 91 is provided in the equal rotary type of both sides around the upper portion of mould 4, push rod 91 rotates to the inboard and can push the fashioned magnet in the mould 4 and drop down, make the fashioned magnet in the mould 4 can drop down more fast, avoid the fashioned magnet in the mould 4 to glue at the mould 4 inner wall, grooved drum 92 has all been welded to two push rod 91 left and right sides, the equal bilateral symmetry in both sides around the mould 4 is provided with first contact rod 93, four first contact rod 93 upper ends all slide in adjacent grooved drum 92, baffle 72 can contact with first contact rod 93 to the outside motion, be connected with third spring 94 between first contact rod 93 and the mould 4.

When baffle 72 is opened toward the motion of outside, baffle 72 can contact with first contact lever 93, baffle 72 can extrude first contact lever 93 toward the motion of outside, the compression of third spring 94, first contact lever 93 drives the corotation of groove section of thick bamboo 92 toward the motion of outside, the corotation of groove section of thick bamboo 92 drives push rod 91 and rotates toward the inboard, push rod 91 rotates toward the inboard and can extrude the fashioned magnet in the mould 4 and drop down, make fashioned magnet can be more quick in the mould 4 and drop down, avoid the fashioned magnet in the mould 4 to glue at the 4 inner walls of mould, when baffle 72 is closed toward the motion of inside, baffle 72 can first contact lever 93 separation, third spring 94 reconversion drives first contact lever 93 and resets toward the motion of inside, first contact lever 93 drives the reversal of groove section of thick bamboo 92 toward the motion of inside, the reversal of groove section of thick bamboo 92 can drive push rod 91 and rotate to reset toward the outside.

Referring to fig. 2, fig. 8 and fig. 9 show, still including buffering subassembly 10, buffering subassembly 10 is including third guide arm 101, buffer block 102 and fourth spring 103, equal interval welding in both sides has three third guide arm 101 about the 5 inner walls of unloading frame, six third guide arm 101 inboard all slidingtype is provided with buffer block 102, all around fourth spring 103 on six third guide arms 101, the both ends of fourth spring 103 are connected with unloading frame 5 and buffer block 102 respectively, the magnet after the shaping can extrude buffer block 102 toward the outside motion down dropping, fourth spring 103 compresses, thereby can slow down the speed of dropping of magnet, play the effect of buffering, and then can avoid the magnet after the shaping to take place the damage.

When magnet after the shaping down drops, magnet after the shaping can contact with buffer block 102, magnet after the shaping can extrude buffer block 102 toward the lateral motion, fourth spring 103 compresses, third guide arm 101 plays the guide effect, thereby can slow down the speed that drops of magnet, play the effect of buffering, and then can avoid magnet after the shaping to take place to damage, when magnet after the shaping separates with buffer block 102, fourth spring 103 reconversion, can drive buffer block 102 toward the medial motion and reset.

Referring to fig. 1 and 10, further including shaking flat assembly 11, shake flat assembly 11 including second contact rod 111, fifth spring 112, third contact rod 113, sixth spring 114 and knocking block 115, support frame 1 middle part left and right sides all sliding type is provided with second contact rod 111, all be connected with fifth spring 112 between the front and back both sides of two second contact rod 111 bottoms and support frame 1, the left and right sides on mould 4 upper portion all front and back symmetry sliding type is provided with third contact rod 113, left third contact rod 113 all contacts with left second contact rod 111, right third contact rod 113 all contacts with right second contact rod 111, knocking block 115 has all been welded to four third contact rod 113 inboards, knocking block 115 inward movement can contact mould 4, knocking block 115 left and right reciprocating motion can knock mould 4, thereby can shake flat rare earth permanent magnetic alloy powder in mould 4, avoid the phenomenon that fashioned magnet unevenness appears, knocking block 115 and mould 4 between be connected with sixth spring 114.

When connecting rod 81 down moved, connecting rod 81 can extrude second contact lever 111 down moved, fifth spring 112 compresses, under the cooperation of sixth spring 114, second contact lever 111 can drive third contact lever 113 reciprocating motion about, reciprocating motion drives and beats piece 115 reciprocating motion about the third contact lever 113, thereby can beat mould 4 through beating piece 115 intermittent type nature, make mould 4 shake, and then can tremble the level with the interior neodymium iron boron tombarthite permanent magnet alloy powder of mould 4, avoid the phenomenon of unevenness to appear in the magnet after the shaping, when connecting rod 81 up moved and resets, fifth spring 112 reconversion, drive second contact lever 111 up moved, and the same reason, can drive once more and beat piece 115 intermittent type nature to mould 4 and beat.

Referring to fig. 1 and 11, the die further comprises a locking assembly 12, the locking assembly 12 includes a pull rod 121, a clamping block 122 and a seventh spring 123, the pull rod 121 is slidably disposed in front of the upper portion of the blanking frame 5, the clamping block 122 is welded to the top of the pull rod 121, the clamping block 122 clamps the two baffles 72, so that the two baffles 72 can be tightly attached to avoid the neodymium iron boron rare earth permanent magnet alloy powder in the die 4 from falling through a gap between the two baffles 72, the seventh spring 123 is wound on the pull rod 121, and two ends of the seventh spring 123 are respectively connected with the clamping block 122 and the blanking frame 5.

After neodymium iron boron tombarthite permanent magnetism alloy powder extrusion, people pull down pull rod 121, seventh spring 123 compresses, pull rod 121 moves down and drives fixture block 122 and move down, make fixture block 122 no longer block baffle 72, baffle 72 can open toward the outside motion this moment, make the magnet after the shaping drop in collecting frame 6, after baffle 72 moves to the inboard and closes, people can loosen pull rod 121, seventh spring 123 reconversion, drive pull rod 121 and fixture block 122 and move up and reset, make fixture block 122 block baffle 72 again, thereby can make two baffles 72 closely laminate and avoid the neodymium iron boron tombarthite permanent magnetism alloy powder in the mould 4 to drop through the gap between two baffles 72.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a former of neodymium iron boron tombarthite permanent magnetism, including support frame (1), cylinder (2), clamp plate (3), mould (4), unloading frame (5) and collection frame (6), support frame (1) upper portion intermediate junction has cylinder (2), the telescopic link bottom of cylinder (2) is connected with clamp plate (3) that are used for extrusion forming with neodymium iron boron tombarthite permanent magnetism alloy powder, support frame (1) middle part is connected with mould (4), mould (4) are located clamp plate (3) under, support frame (1) sub-unit connection has unloading frame (5), unloading frame (5) are located mould (4) under, support frame (1) lower part is placed and is used for carrying out collection frame (6) of collecting the magnet after the shaping, it is located unloading frame (5) below to collect frame (6), characterized by, still including blanking subassembly (7) and opening subassembly (8), be provided with on mould (4) and be used for making blanking subassembly (7) that the magnet after the shaping down dropped, the lower part of cylinder (2) is provided with and is used for opening the subassembly (8) that props up of opening the effect.

2. The forming device of the neodymium iron boron rare earth permanent magnet according to claim 1, wherein the blanking assembly (7) comprises first guide rods (71), baffles (72) and first springs (73), the first guide rods (71) are symmetrically connected to the front and rear sides of the lower portion of the die (4) in the left-right mode, the baffles (72) are arranged between the two first guide rods (71) on the left side in a sliding mode, the baffles (72) are also arranged between the two first guide rods (71) on the right side in a sliding mode, the baffles (72) block the bottom of the die (4), the first springs (73) are wound on the four first guide rods (71), and two ends of each first spring (73) are respectively connected with the baffles (72) and the first guide rods (71).

3. The forming device of the neodymium iron boron rare earth permanent magnet according to claim 2, wherein the spreading assembly (8) comprises a connecting rod (81), a second guide rod (82), a wedge block (83) and a second spring (84), the connecting rod (81) is connected to the left side and the right side of the telescopic rod of the cylinder (2), the second guide rods (82) are symmetrically arranged on the outer sides of the two baffles (72) in a front-back sliding mode, the wedge block (83) is connected to the inner sides of the two second guide rods (82) on the left side, the wedge block (83) is connected to the inner sides of the two second guide rods (82) on the right side, the connecting rod (81) moves downwards to be in contact with the wedge block (83), the second spring (84) is wound on the four second guide rods (82), and two ends of the second spring (84) are respectively connected with the baffles (72) and the wedge block (83).

4. The forming device of a neodymium iron boron rare earth permanent magnet according to claim 3, characterized by further comprising a pushing assembly (9) for the extruded magnet to fall down, wherein the pushing assembly (9) comprises a push rod (91), a groove barrel (92), a first contact rod (93) and a third spring (94), the push rod (91) is rotatably arranged on the front side and the rear side of the upper portion of the die (4), the groove barrels (92) are connected to the left side and the right side of the two push rods (91), the first contact rods (93) are symmetrically and bilaterally slidably arranged on the front side and the rear side of the die (4), the upper ends of the four first contact rods (93) slide in the adjacent groove barrels (92), the baffle (72) moves outwards to contact with the first contact rods (93), and the third spring (94) is connected between the first contact rods (93) and the die (4).

5. The forming device of the neodymium iron boron rare earth permanent magnet according to claim 4, characterized by further comprising a buffer component (10) for buffering, wherein the buffer component (10) comprises third guide rods (101), buffer blocks (102) and fourth springs (103), the three third guide rods (101) are uniformly connected to the left side and the right side of the inner wall of the blanking frame (5) at intervals, the buffer blocks (102) are arranged on the inner sides of the six third guide rods (101) in a sliding manner, the fourth springs (103) are wound on the six third guide rods (101), and two ends of each fourth spring (103) are respectively connected with the blanking frame (5) and the buffer blocks (102).

6. The forming equipment of a neodymium iron boron rare earth permanent magnet according to claim 5, characterized by further comprising a leveling component (11) for leveling neodymium iron boron rare earth permanent magnet alloy powder, wherein the leveling component (11) comprises a second contact rod (111), a fifth spring (112), a third contact rod (113), a sixth spring (114) and a knocking block (115), the second contact rods (111) are arranged on the left side and the right side of the middle of the supporting frame (1) in a sliding manner, the fifth springs (112) are connected between the front side and the rear side of the bottoms of the two second contact rods (111) and the supporting frame (1), the third contact rods (113) are arranged on the left side and the right side of the upper portion of the mold (4) in a sliding manner, the left third contact rod (113) is in contact with the left second contact rod (111), the right third contact rod (113) is in contact with the right second contact rod (111), the knocking block (115) is connected to the inner sides of the four third contact rods (113), the knocking block (115) can be in contact with the mold (4) when moving inwards, and the sixth spring (114) is connected between the mold (115).

7. The forming device of the neodymium iron boron rare earth permanent magnet according to claim 6, characterized by further comprising a locking assembly (12) for clamping the two baffles (72), wherein the locking assembly (12) comprises a pull rod (121), a clamping block (122) and a seventh spring (123), the pull rod (121) is slidably arranged in front of the upper portion of the blanking frame (5), the clamping block (122) is connected to the top of the pull rod (121), the two baffles (72) are clamped by the clamping block (122), the seventh spring (123) is wound on the pull rod (121), and two ends of the seventh spring (123) are respectively connected with the clamping block (122) and the blanking frame (5).

8. The forming apparatus of a nd-fe-b rare earth permanent magnet according to claim 2 wherein the first spring (73) is a compression spring.