CN215617347U - Ball-milling device is used in production of high impedance magnetic ring - Google Patents

Abstract

The utility model discloses a ball milling device for producing a high-impedance magnetic ring, which comprises a box body, a rotating shaft arranged on the box body, an inner cylinder arranged on the rotating shaft, a first driving piece used for driving the rotating shaft to rotate, a feeding mechanism, a discharging mechanism and a screening mechanism, wherein the feeding mechanism is arranged on the rotating shaft; the blanking mechanism comprises a blanking pipe arranged on the inner cylinder, a shaft body arranged on the blanking pipe, a second driving piece used for driving the shaft body to rotate, a blanking plate arranged on the shaft body, a rubber ring arranged on the blanking plate, a first sliding rod arranged on the blanking pipe, a material scattering piece arranged on the first sliding rod, a connecting rod arranged on the material scattering piece, a material scattering plate arranged on the material scattering piece, a plurality of notches arranged on the material scattering plate, a first elastic piece arranged on the material scattering plate, a bottom plate, a fixed rod, a loop bar, a second elastic piece and a driving assembly used for driving the connecting rod to slide up and down.

Description

Ball-milling device is used in production of high impedance magnetic ring

Technical Field

The utility model belongs to the technical field of magnetic ring production, and particularly relates to a ball milling device for producing a high-impedance magnetic ring.

Background

In the molding and pressing stage of the magnetic ring, even if a process angle is designed, a sharp part of a chamfer still inevitably appears; when the sharp part is wound by a subsequent coil, the insulating layer of the coil can be scratched, so that safety accidents are caused; the corner part can be poorly painted in the spraying process, so that the pressure resistance is poor; for a magnetic ring with a larger diameter, chamfering treatment is generally carried out on the corner of the magnetic ring after the forming and pressing are finished; for a magnetic ring with a relatively small diameter, a ball mill is generally used for ball milling treatment.

However, in the existing magnetic ring ball mill, the ball milling medium and the magnetic ring are mixed together, and because the discharging outlet is smaller, the ball milling medium and the magnetic ring are easily blocked at the discharging port, and the situation that the materials are stacked and screened incompletely because the continuous discharging falls on the screening plate below the ball milling medium and the magnetic ring are easily accumulated occurs.

SUMMERY OF THE UTILITY MODEL

The utility model provides a ball milling device for producing a high-impedance magnetic ring, which overcomes the defects of the prior art and is anti-blocking in blanking and convenient for complete screening.

In order to achieve the purpose, the utility model adopts the following technical scheme: a ball milling device for producing a high-impedance magnetic ring comprises a box body, a rotating shaft arranged on the box body, an inner barrel arranged on the rotating shaft, a first driving piece used for driving the rotating shaft to rotate, a feeding mechanism, a discharging mechanism and a screening mechanism; the blanking mechanism comprises a blanking pipe arranged on the inner cylinder, a shaft body arranged on the blanking pipe, a second driving piece used for driving the shaft body to rotate, a blanking plate arranged on the shaft body, a rubber ring arranged on the blanking plate, a first sliding rod arranged on the blanking pipe, a material scattering piece arranged on the first sliding rod, a connecting rod arranged on the material scattering piece, a material scattering plate arranged on the material scattering piece, a plurality of notches arranged on the material scattering plate, a first elastic piece arranged on the material scattering plate, a bottom plate arranged on the material scattering piece, a fixed rod arranged on the bottom plate, a loop bar arranged on the material scattering plate, a second elastic piece arranged on the loop bar and a driving assembly used for driving the connecting rod to slide up and down; a blanking mechanism is arranged, when the second driving piece is started, the shaft body is driven to rotate to drive the blanking plate to rotate so as to turn over the material between the blanking pipe and the inner cylinder, so that the material clamped at the position is pushed or pressed downwards, and the situation that the blanking pipe is blocked by a ball milling medium and a magnetic ring is avoided; the connecting rod slides up and down to drive the bulk material parts to slide up and down, so that the falling materials in the discharging pipe can be discharged at intervals, the materials are prevented from continuously falling to the lower part to cause stacking, and complete screening is facilitated; the bulk material plate is arranged and is arc-shaped, materials fall onto the bulk material plate from top to bottom and are dispersed, one part of the materials fall through a notch on the bulk material plate, and the other part of the materials fall from the edge of the bulk material plate, so that the materials are dispersed to the greatest extent and fall, and incomplete screening caused by the fact that the materials are stacked up and down is avoided; the falling of the materials at intervals generates certain impact force on the bulk material plate, and the elasticity of the second elastic piece plays a certain buffering action force on the bulk material plate to play a certain protection role.

Preferably, the driving assembly comprises a disc arranged on the shaft body, a first fixed shaft arranged on the disc, a first supporting rod arranged on the first fixed shaft, and a second sliding rod arranged on the first supporting rod; the shaft body rotates to drive the disc to rotate, the first fixed shaft is driven to synchronously rotate, the first supporting rod swings to drive the second sliding rod to vertically slide relative to the blanking pipe, and therefore the bulk material part is driven to vertically move.

Preferably, the screening mechanism comprises a first rotating shaft arranged on the box body, a third driving piece used for driving the first rotating shaft to rotate, a rotating disc arranged on the first rotating shaft, a second fixed shaft arranged on the rotating disc, a second supporting rod arranged on the second fixed shaft, a first connecting rod arranged on the second supporting rod, a third sliding rod arranged on the connecting rod, a push rod arranged on the third sliding rod, a second connecting rod arranged on the third sliding rod, a fixed plate arranged on the box body, a first sieve plate arranged on the fixed plate, a second sieve plate arranged on the box body, a limiting plate arranged on the second sieve plate, a third elastic piece arranged on the limiting plate, a collecting tank arranged on the box body, a baffle plate assembly and a door plate assembly; the third driving piece is started to drive the first rotating shaft to rotate and drive the rotating disc to rotate, the second fixed shaft synchronously rotates to drive the second supporting rod to swing, so that the third sliding rod slides up and down relative to the box body, the ejector rod synchronously moves up and down, the end part of the ejector rod pushes against the first sieve plate, the first sieve plate vibrates, the ball milling medium and the magnetic ring are separated, and the magnetic ring is left on the first sieve plate; the third slide bar slides from top to bottom, drives the swing of second connecting rod, and then drives the vibrations of second sieve, separates ball-milling medium and disintegrating slag sieve, and the disintegrating slag falls to the collecting vat and collects, and the follow-up recovery of ball-milling medium of being convenient for is recycled.

Preferably, the baffle plate assembly comprises a first fixed shaft arranged on the box body, a baffle plate arranged on the first fixed shaft, a first torsion piece arranged on the first fixed shaft, a first limit groove arranged on the baffle plate, a propping piece arranged on the first limit groove and a fourth elastic piece arranged on the propping piece; the baffle receives the effort of first torsion piece and makes to support tightly one side and support all the time on first sieve, and first sieve vibrations baffle rotates thereupon, and the elasticity of fourth elastic component pushes away and supports the piece, avoids the material to get into the gap between box and the first sieve.

Preferably, the door plate assembly comprises a second fixed shaft arranged on the box body, a door plate arranged on the second fixed shaft, a second torsion piece arranged on the second fixed shaft, a second limit groove arranged on the door plate, a locking piece arranged on the second limit groove, a fifth elastic piece arranged on the locking piece, a shift lever arranged on the locking piece, a third fixed shaft arranged on the door plate, an arc-shaped plate arranged on the third fixed shaft and a third torsion piece arranged on the third fixed shaft; an empty groove is formed between the end part of the arc-shaped plate and the first sieve plate, and the magnetic ring falling from the first sieve plate can be pushed to be flat into a layer, so that the magnetic ring can be sieved for the second time when passing through the arc-shaped plate, and the situation that sieving is not complete is avoided; the driving lever is pulled to enable the locking piece to move upwards, and the door panel can be rotated and opened under the action force of the second torsion piece after the locking piece is separated from the locking piece and is in contact with the second torsion piece, so that the magnetic ring on the fixing plate can be taken out conveniently; when the door plate is closed, the door plate is pushed towards the side wall of the box body, the locking piece is provided with an inclined plane, the inclined plane is extruded and retracted into the second limiting groove, after the door plate and the box body are positioned on a plane, the locking piece is clamped on the box body through extrusion by the elastic force of the fifth elastic piece, and the door plate is fixed.

Preferably, the feeding mechanism comprises a feeding groove arranged on the box body, a fourth fixed shaft arranged on the inner cylinder, a feeding plate arranged on the fourth fixed shaft, a fourth torsion element arranged on the fourth fixed shaft, a sealing strip arranged on the feeding plate, a clamping groove arranged on the inner cylinder, a clamping element arranged on the clamping groove, a first limiting spring arranged on the clamping element and a positioning assembly; the material is added into the feeding groove, the feeding plate is opened by the material, after the material is added, the feeding plate is automatically overturned under the action of the fourth torsion piece, the inner barrel is closed, the clamping piece is clamped on the sealing strip under the action of the elastic force of the first limiting spring, and the material is prevented from flying out when the inner barrel works.

Preferably, the positioning assembly comprises a sleeve arranged on the box body, a positioning piece arranged on the sleeve, a pull rod arranged on the positioning piece, a second limiting spring arranged on the positioning piece, a third limiting groove arranged on the sleeve, a ball arranged on the third limiting groove and a second limiting spring arranged on the ball; when the material needs to be added, the inner cylinder rotates to a certain position, the pull rod is pressed downwards, the ball body is clamped on the pull rod, the positioning piece is clamped on the inner cylinder, the inner cylinder is fixed, and at the moment, the feeding plate corresponds to the feeding groove in position, and the feeding can be started.

In summary, the blanking mechanism is arranged, when the second driving piece is started, the shaft body is driven to rotate to drive the blanking plate to rotate so as to turn over the material between the blanking pipe and the inner cylinder, so that the material clamped at the position is pushed or pressed downwards, and the ball milling medium and the magnetic ring are prevented from blocking the blanking pipe; the connecting rod slides up and down to drive the bulk material parts to slide up and down, so that the falling materials in the discharging pipe can be discharged at intervals, the materials are prevented from continuously falling to the lower part to cause stacking, and complete screening is facilitated; the bulk material plate is arranged and is arc-shaped, materials fall onto the bulk material plate from top to bottom and are dispersed, one part of the materials fall through a notch on the bulk material plate, and the other part of the materials fall from the edge of the bulk material plate, so that the materials are dispersed to the greatest extent and fall, and incomplete screening caused by the fact that the materials are stacked up and down is avoided; the falling of the materials at intervals generates certain impact force on the bulk material plate, and the elasticity of the second elastic piece plays a certain buffering action force on the bulk material plate to play a certain protection role.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a right side view of fig. 1.

Fig. 3 is a cross-sectional view taken along a-a of fig. 2.

Fig. 4 is an enlarged view at B in fig. 3.

Fig. 5 is an enlarged view at C in fig. 3.

Fig. 6 is an enlarged view at D in fig. 3.

Fig. 7 is an enlarged view at E in fig. 3.

Fig. 8 is an enlarged view at F in fig. 3.

Detailed Description

As shown in fig. 1 to 8, a ball milling device for producing a high-impedance magnetic ring comprises a box body 11, a rotating shaft 12, an inner cylinder 13, a first driving part 14, a feeding mechanism, a blanking mechanism and a screening mechanism; the rotating shaft 12 is rotatably arranged on the box body 11 in a penetrating way; the inner cylinder 13 is fixedly sleeved on the rotating shaft 12; the first driving member 14 is fixed to the housing 11 by using an existing motor.

Further, the feeding mechanism comprises a feeding groove 21, a fourth fixed shaft 22, a feeding plate 23, a fourth torsion piece 24, a sealing strip 25, a clamping groove 26, a clamping piece 27, a first limiting spring 28 and a positioning assembly; the feeding groove 21 is fixed on the box body 11; the fourth fixed shaft 22 is fixedly arranged on the inner cylinder 13 in a penetrating way; the feeding plate 23 is rotatably sleeved on the fourth fixed shaft 22; the fourth torsion element 24 is an existing torsion spring, and is sleeved on the fourth fixed shaft 22, one end of the torsion arm is fixed on the fourth fixed shaft 22, and the other end of the torsion arm is fixed on the feeding plate 23; the sealing strip 25 is an existing rubber strip and is fixed on one side of the feeding plate 23; the clamping groove 26 is formed in the inner cylinder 13; the clamping piece 27 can slide relative to the clamping groove 26, and the end part of the clamping piece is arc-shaped; the first limiting spring 28 is made of an existing metal spring, one end of the first limiting spring is fixed on the clamping groove 26, and the other end of the first limiting spring is fixed on the clamping piece 27.

Further, the positioning assembly comprises a sleeve 31, a positioning member 32, a pull rod 33, a second limiting spring 34, a third limiting groove 35, a ball 36 and a second limiting spring 37; the sleeve 31 is fixed on the box body 11; the positioning member 32 can slide relative to the sleeve 31; the pull rod 33 can slide relative to the sleeve 31, and one end of the pull rod is fixed on the positioning piece 32; the second limiting spring 34 is an existing metal spring, one end of the second limiting spring is fixed on the sleeve 31, and the other end of the second limiting spring is fixed on the positioning piece 32; the third limiting groove 35 is formed in the sleeve 31; the ball 36 can slide relative to the third limiting groove 35; the second limiting spring 37 is made of an existing metal spring, one end of the second limiting spring is fixed on the ball 36, and the other end of the second limiting spring is fixed on the third limiting groove 35.

Further, the blanking mechanism comprises a blanking pipe 41, a shaft body 42, a second driving member 43, a blanking plate 45, a rubber ring 46, a first sliding rod 47, a material dispersing member 48, a connecting rod 49, a material dispersing plate 410, a notch 411, a first elastic member 412, a bottom plate 413, a fixed rod 414, a sleeve rod 415, a second elastic member 416 and a driving assembly; the blanking pipe 41 is fixed on the inner cylinder 13; the shaft body 42 is rotatably arranged on the blanking pipe 41 in a penetrating way; the second driving element 43 is an existing motor, and is fixedly mounted on the inner cylinder 13 and used for driving the shaft body 42 to rotate; the lower material plate 45 is fixedly sleeved on the shaft body 42, is circular in shape, and is provided with a chamfer at the edge; the rubber ring 46 is fixedly sleeved on the blanking plate 45; the first sliding rod 47 can slide up and down relative to the blanking pipe 41; the bulk material 48 is fixed on the first sliding rod 47, is small at the top and big at the bottom, and the small end of the bulk material is a rounded cambered surface to prevent the magnetic ring from being hung; the connecting rod 49 is fixed on the bulk material; the material-dispersing plate 410 is slidable relative to the material-dispersing member 48; a plurality of notches 411 are annularly and equidistantly arranged on the material scattering plate 410; the first elastic member 412 is an existing spring, one end of which is fixed on the material-dispersing plate 410, and the other end of which is fixed on the material-dispersing member 410; the bottom plate 413 is fixed on the bulk material 410; a plurality of fixed rods 414 are arranged and fixed on the bottom plate 413 at equal intervals in a ring shape; the sleeve rod 415 is fixed on the material scattering plate 410 and can slide relative to the fixed rod 414; the second elastic member 416 is an existing spring, and has one end fixed to the sleeve rod 415 and the other end fixed to the fixed rod 414.

Further, the driving assembly includes a disc 51, a first fixed shaft 52, a first supporting rod 53 and a second sliding rod 54; the disc 51 is fixedly sleeved on one end part of the shaft body 42; the first fixed shaft 52 is fixed on the eccentric position of the disc 51; one end of the first supporting rod 53 is rotatably sleeved on the first fixing shaft 52; one end of the second sliding rod 54 can slide relative to the discharging pipe 41, and the other end can rotatably penetrate through the other end of the first supporting rod 53.

Further, the screening mechanism comprises a first rotating shaft 61, a third driving member 62, a rotating disc 63, a second fixed shaft 64, a second supporting rod 65, a first connecting rod 66, a third sliding rod 67, a top rod 68, a second connecting rod 69, a fixed plate 610, a first screen plate 611, a second screen plate 612, a limiting plate 613, a third elastic member 614, a collecting tank 615, a baffle assembly and a door plate assembly; the first rotating shaft 61 is rotatably arranged on the box body 11 in a penetrating way; the third driving member 62 is a conventional motor and is fixedly mounted on one side of the box body 11; the turntable 63 is fixedly sleeved on the first rotating shaft 61; the second fixed shaft 64 is fixed at the eccentric position of the rotating disc 63; one end of the second supporting rod 65 is rotatably sleeved on the second fixing shaft 64; the first connecting rod 66 is rotatably arranged on the other end of the second supporting rod 65 in a penetrating way; the third sliding rod 67 can slide up and down relative to the inner wall of the box body 11, and one end of the third sliding rod is rotatably sleeved on the first connecting rod 66; the top rod 68 is fixed on the second sliding rod 67; one end of the second connecting rod 69 is hinged to the other end of the third sliding rod 67; the fixing plate 610 is fixed on the inner wall of the case 11; one side of the first sieve plate 611 is hinged to one side of the fixing plate 610, and a plurality of first sieve holes are formed in the first sieve plate; one side of the second sieve plate 612 is hinged to one side of the box body 11, a plurality of second sieve holes are formed in the second sieve plate, and the pore diameter of each second sieve hole is smaller than that of each first sieve hole; the limiting plate 613 is an arc-shaped plate and is fixed on the second screen plate 612; the third elastic element 614 is an existing spring, and has one end fixed to the limit plate 613 and the other end fixed to the case 11; the collection trough 615 is slidable relative to the bottom of the tank 11.

Further, the baffle plate assembly comprises a first fixed shaft 71, a baffle plate 72, a first torsion member 73, a first limit groove 74, a resisting member 75 and a fourth elastic member 76; the first fixed shaft 71 is fixedly arranged on the box body 11 in a penetrating way; the baffle 72 is rotatably sleeved on the first fixed shaft 71; the first torsion member 73 is an existing torsion spring, and is sleeved on the first fixed shaft 71, one end of the torsion member is fixed on the first fixed shaft 71, and the other end of the torsion member is fixed on the baffle plate 72; the first limit groove 74 is arranged on the baffle plate 72; the abutting member 75 can slide relative to the first limiting groove 74, the end of the cross section of the abutting member is circular, and the edge of the abutting member is provided with a plurality of convex strips; the fourth elastic member 76 is a conventional spring, and has one end fixed to the abutting member 75 and the other end fixed to one side of the first limiting groove 74.

Further, the door panel assembly includes a second fixed shaft 81, a door panel 82, a second torsion member 83, a second limiting groove 84, a locking member 85, a fifth elastic member 86, a shift lever 87, a third fixed shaft 88, an arc-shaped plate 89 and a third torsion member 810; the second fixed shaft 81 is fixedly arranged on the box body 11 in a penetrating way; the door panel 82 is rotatably sleeved on the second fixed shaft 81; the second torsion member 83 is an existing torsion spring, and is sleeved on the second fixed shaft 81, and the other end of the torsion arm is fixed on the door panel 82; the second limit groove 84 is formed in the door panel 82; the locking member 85 can slide relative to the second limiting groove 84; the fifth elastic member 86 is an existing spring, one end of which is fixed to the locking member 85 and the other end of which is fixed to the second limiting groove 84; the shift lever 87 is fixed on the locking piece 85; the third fixed shaft 88 is fixedly arranged on the door panel 82 in a penetrating way; the arc plate 89 is rotatably sleeved on the third fixed shaft 88; the third torsion element 810 is an existing torsion spring, and is sleeved on the third fixed shaft 88, one end of the torsion arm is fixed on the third fixed shaft 88, and the other end of the torsion arm is fixed on the arc-shaped plate 89; an empty slot is arranged between the end part of the arc-shaped plate 89 and the first sieve plate 611.

The working principle is as follows: the inner cylinder 13 rotates to a certain position, the pull rod 33 is pressed downwards, the ball 36 is clamped on the pull rod 33, the positioning piece 32 is clamped on the inner cylinder 13, the inner cylinder 13 is fixed, namely the position of the feeding plate 23 corresponds to that of the feeding groove 21, materials can be added into the feeding groove 21, the feeding plate 23 is flushed by the materials, and after the materials are added, the feeding plate 23 is automatically overturned under the action of the fourth torsion piece 24, so that the inner cylinder 13 is closed; the first driving piece 14 is started, the rotating shaft 12 rotates, and the inner barrel 13 is driven to rotate to start ball milling work; the second driving piece 43 is started to drive the shaft body 42 to rotate and drive the blanking plate 45 to rotate so as to turn over the material between the blanking pipe 41 and the inner cylinder 13, so that the material clamped at the position is pushed or pressed downwards; the shaft body 42 rotates to drive the disc 51 to rotate, the first fixed shaft 52 is driven to synchronously rotate, the first supporting rod 53 swings to drive the second sliding rod 54 to vertically slide relative to the blanking pipe 41, and therefore the bulk material 48 is driven to vertically move, and the material falling from the blanking pipe 41 can be blanked at intervals; the third driving element 62 is started to drive the first rotating shaft 61 to rotate and drive the rotating disc 63 to rotate, the second fixed shaft 64 synchronously rotates and drives the second supporting rod 65 to swing, so that the third sliding rod 67 slides up and down relative to the box body 11, the ejector rod 68 synchronously moves up and down, the end part of the ejector rod pushes against the first sieve plate 611, the first sieve plate 611 vibrates, the ball milling medium and the magnetic ring are separated, and the magnetic ring is left on the first sieve plate 611; the third sliding rod 67 slides up and down to drive the second connecting rod 69 to swing, so as to drive the second sieve plate 612 to vibrate, so that the ball milling medium and the crushed slag are separated by sieving, and the crushed slag falls into the collecting tank 615 to be collected.

Claims (7)

1. A ball milling device for producing a high-impedance magnetic ring comprises a box body (11), a rotating shaft (12) arranged on the box body, an inner barrel (13) arranged on the rotating shaft, a first driving piece (14) used for driving the rotating shaft to rotate, a feeding mechanism, a discharging mechanism and a screening mechanism; the method is characterized in that: the blanking mechanism comprises a blanking pipe (41) arranged on the inner cylinder, a shaft body (42) arranged on the blanking pipe, a second driving piece (43) used for driving the shaft body to rotate, a blanking plate (45) arranged on the shaft body, a rubber ring (46) arranged on the blanking plate, a first sliding rod (47) arranged on the blanking pipe, a material dispersing piece (48) arranged on the first sliding rod, and a connecting rod (49) arranged on the material dispersing piece, the device comprises a bulk material plate (410) arranged on the bulk material member, a plurality of notches (411) arranged on the bulk material plate, a first elastic member (412) arranged on the bulk material plate, a bottom plate (4123) arranged on the bulk material member, a fixed rod (414) arranged on the bottom plate, a loop rod (415) arranged on the bulk material plate, a second elastic member (416) arranged on the loop rod and a driving component used for driving the connecting rod to slide up and down.

2. The ball milling device for producing the high-impedance magnetic ring according to claim 1, which is characterized in that: the driving assembly comprises a disc (51) arranged on the shaft body, a first fixed shaft (52) arranged on the disc, a first supporting rod (53) arranged on the first fixed shaft and a second sliding rod (54) arranged on the first supporting rod.

3. The ball milling device for producing the high-impedance magnetic ring according to claim 1, which is characterized in that: screening mechanism is including locating first axis of rotation (61) on the box, be used for driving first axis of rotation pivoted third driving piece (62), locate carousel (63) on the first axis of rotation, locate second fixed axle (64) on the carousel, locate second branch (65) on the fixed axle of second, locate first connecting rod (66) on the second branch, locate third slide bar (67) on the connecting rod, locate ejector pin (68) on the third slide bar, locate second connecting rod (69) on the third slide bar, locate fixed plate (610) on the box, locate first sieve (611) on the fixed plate, locate second sieve (612) on the box, locate limiting plate (613) on the second sieve, locate third elastic component (614) on the limiting plate, locate collecting vat (615) on the box, Baffle subassembly and door plant subassembly.

4. The ball milling device for producing the high-impedance magnetic ring according to claim 3, wherein: the baffle plate assembly comprises a first fixed shaft (71) arranged on the box body, a baffle plate (72) arranged on the first fixed shaft, a first torsion piece (73) arranged on the first fixed shaft, a first limit groove (74) arranged on the baffle plate, a supporting piece (75) arranged on the first limit groove and a fourth elastic piece (76) arranged on the supporting piece.

5. The ball milling device for producing the high-impedance magnetic ring according to claim 3, wherein: the door plate assembly comprises a second fixed shaft (81) arranged on the box body, a door plate (82) arranged on the second fixed shaft, a second torsion piece (83) arranged on the second fixed shaft, a second limiting groove (84) arranged on the door plate, a locking piece (85) arranged on the second limiting groove, a fifth elastic piece (86) arranged on the locking piece, a shift lever (87) arranged on the locking piece, a third fixed shaft (88) arranged on the door plate, an arc-shaped plate (89) arranged on the third fixed shaft and a third torsion piece (810) arranged on the third fixed shaft.

6. The ball milling device for producing the high-impedance magnetic ring according to claim 1, which is characterized in that: the feeding mechanism comprises a feeding groove (21) arranged on the box body, a fourth fixed shaft (22) arranged on the inner cylinder, a feeding plate (23) arranged on the fourth fixed shaft, a fourth torsion piece (24) arranged on the fourth fixed shaft, a sealing strip (25) arranged on the feeding plate, a clamping groove (26) arranged on the inner cylinder, a clamping piece (27) arranged on the clamping groove, a first limiting spring (28) arranged on the clamping piece and a positioning assembly.

7. The ball milling device for producing the high-impedance magnetic ring according to claim 6, wherein: the positioning assembly comprises a sleeve (31) arranged on the box body, a positioning piece (32) arranged on the sleeve, a pull rod (33) arranged on the positioning piece, a second limiting spring (34) arranged on the positioning piece, a third limiting groove (35) arranged on the sleeve, a ball body (36) arranged on the third limiting groove and a second limiting spring (37) arranged on the ball body.

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