CN112647177A

CN112647177A - Tow diffusion device for non-woven fabric machinery

Info

Publication number: CN112647177A
Application number: CN202011607030.0A
Authority: CN
Inventors: 尹琳珺
Original assignee: Tianmen Geyun Non Woven Fabric Co ltd
Current assignee: Tianmen Geyun Non Woven Fabric Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-04-13

Abstract

The invention discloses a tow diffusing device for non-woven fabric machinery, which comprises a box body, a tow inlet and a tow outlet, wherein the tow inlet is arranged at the bottom of one side of the box body, the tow outlet is arranged at the bottom of one side of the box body far away from the tow inlet, and the inner wall of one side of the box body close to the tow inlet is rotatably connected with a discharging roller through a bearing. When the fiber bundle spreading device is used, the motor drives the material receiving roller to rotate to drive fibers to be gradually transferred from the material discharging roller to the material receiving roller, the material discharging roller is driven by the fibers to rotate, the crank connecting rod and the material discharging roller synchronously rotate and drive the moving block to do left-right reciprocating mechanical motion in the box body, the two second thread rolling plates sequentially and reciprocally impact the first thread rolling plate so as to rub and divide the fibers positioned at the gap, the first thread rolling plate and the second thread rolling plate rub together to realize bundle spreading, the fiber bundle covering area is wide, the bundle spreading is thorough, the doubling phenomenon is not easy to generate, the power for bundle spreading is provided by the winding mechanism, and the control process is simple and convenient.

Description

Tow diffusion device for non-woven fabric machinery

Technical Field

The invention relates to the technical field of textile machinery, in particular to a tow diffusion device for non-woven fabric machinery.

Background

The non-woven fabric has the characteristics of moisture resistance, air permeability, easy decomposition, no toxicity, no irritation, recycling and the like. If the polypropylene granules are mostly adopted as raw materials and are produced by a continuous one-step method of high-temperature melting, spinning, laying and hot-pressing coiling, the polypropylene granules are not interwoven and knitted together by one yarn, but the fibers are directly bonded together by a physical method.

Traditional mechanical type divides silk machine to divide the silk thoroughly, and it is still easy doubling to influence the quality of non-woven fabrics product, the non-woven fabrics fibre that will produce the doubling is not convenient for further diffusion treatment, needs to divide this part fibre secondary into the silk, leads to the efficiency reduction of tow diffusion, needs a design a tow diffusion equipment for non-woven fabrics machinery to solve above-mentioned problem urgently.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a tow diffusing device for a non-woven fabric machine.

In order to achieve the purpose, the invention adopts the following technical scheme:

a tow diffusion device for non-woven fabric machinery comprises a box body, a tow inlet and a tow outlet, wherein the tow inlet is formed in the bottom of one side of the box body, the tow outlet is formed in the bottom of one side, away from the tow inlet, of the box body, the inner wall, close to one side of the tow inlet, of the box body is rotatably connected with a discharging roller through a bearing, the inner wall, close to one side of the tow outlet, of the box body is rotatably connected with a material receiving roller through a bearing, four supports which are distributed in a rectangular mode are fixedly connected to the middle position of the inner wall of the bottom of the box body, the tops of the four supports are fixedly connected with a same box body, a movable block is slidably connected to the interior of the box body, two second tow plates are arranged at the top of the movable block, a cambered surface is formed at the tops of the two tow plates, a top plate is fixedly connected to, the middle position of the bottom of the pressing plate is fixedly connected with a first thread rolling plate, the bottom of the first thread rolling plate is arranged to be an arc surface, a rotating shaft key of the discharging roller is connected with a crank connecting rod, and one end, far away from the discharging roller, of the crank connecting rod is rotatably connected to one side of the moving block through a bearing.

Preferably, one side fixedly connected with push rod motor that box top inner wall is close to the receipts material roller, and the bottom fixedly connected with of push rod motor even the board, even the intermediate position fixedly connected with stereotypes of board bottom, the bottom of stereotype sets up to the cambered surface.

Preferably, the intermediate position fixedly connected with stop collar at roof top, and the intermediate position fixedly connected with gag lever post at clamp plate top, the gag lever post is pegged graft inside the stop collar, and the spacing groove has been seted up at the top of gag lever post one side, and the top fixedly connected with stopper of inner wall on one side of the stop collar, stopper joint are in the inside of spacing groove.

Preferably, one side of the box body close to the crank connecting rod is provided with an opening, the inner wall of the box body far away from one side of the crank connecting rod is provided with a sliding groove, one side of the moving block close to the sliding groove is fixedly connected with a sliding block, and the sliding block is connected inside the sliding groove in a sliding mode.

Preferably, two slots are formed in the top of the moving block, inserting plates are fixedly connected to the bottoms of the two second thread rolling plates, and the two inserting plates are inserted into the two slots respectively.

Preferably, the two second thread rolling plates are provided with thread rolling grooves which are uniformly distributed on one side close to each other.

Preferably, a groove is formed in the middle of the bottom of the first screw plate, and uniformly distributed lugs are fixedly connected to the inner wall of the groove and made of rubber.

Preferably, the bottom of the moving block is provided with two rollers, both ends of each roller are rotatably connected with a roller frame through bearings, and the roller frames are fixedly connected to the bottom of the moving block.

Preferably, the box is close to two revolving plate frames of inner wall fixedly connected with of silk inlet one side, and rotates between two revolving plate frames and be connected with same revolving plate, and the bottom fixedly connected with of revolving plate is the broach that the equidistance distributes, and the same shelves pole of fixedly connected with between two revolving plate frames, shelves pole laminating in the bottom of revolving plate.

Preferably, the box is close to the outer wall fixedly connected with mount of advancing silk mouthful one side, and the inside of mount rotates through the bearing and is connected with the wind-up roll, the pivot of wind-up roll passes through spline fixedly connected with crank, the box is close to the top of wind-up roll one side and has seted up the through-hole, the inner wall of through-hole rotates through the bearing and is connected with the fixed pulley, the top fixedly connected with of commentaries on classics board draws the piece, draw the same cable of fixedly connected with between piece and the wind-up roll, the middle part of cable is around the race of fixed pulley, the box is close to the top fixedly connected with magnet frame of commentaries on classics board one side inner wall, one side.

Compared with the prior art, the invention provides a tow diffusion device for non-woven fabric machinery, which has the following beneficial effects:

1. through arranging the first thread rolling plate, the second thread rolling plate and the crank connecting rod, the motor drives the receiving roller to rotate to drive the fibers to be gradually transferred from the discharging roller to the receiving roller, the discharging roller is driven by the fibers to rotate, the crank connecting rod and the discharging roller synchronously rotate and drive the moving block to do left-right reciprocating mechanical motion in the box body, the two second thread rolling plates sequentially impact the first thread rolling plate in a reciprocating mode to rub and divide the fibers at the gap, the first thread rolling plate is extruded and then ascended, the spring is extruded through the pressing plate, after the second thread rolling plate leaves the first thread rolling plate, the spring pushes the pressing plate and the first thread rolling plate to reset downwards to prepare for next impact with the second thread rolling plate, the thread bundle diffusion is realized through the joint rubbing of the first thread rolling plate and the second thread rolling plate, the coverage of the fiber thread bundles is wide, the thread division is thorough, and the doubling phenomenon is not easy to generate, the power for spreading the tows is provided by the winding mechanism, and the control process is simple and convenient.

2. Through setting up push rod motor and stereotype board, the push rod motor will link board and stereotype board and release downwards, makes the bottom of stereotype board compress tightly the silk bundle, and the fibre silk bundle after dividing the silk is in the state of tightening before reaching the receipts material roller, prevents that the silk bundle after the diffusion from folding up the doubling again, and the cambered surface of stereotype board bottom is difficult for causing the fish tail to the silk bundle.

3. Through setting up gag lever post, stop collar, spacing groove and stopper, during first screw board elevating movement, the gag lever post slides along the inside of stop collar, and the stopper slides along the inner wall of spacing groove, has injectd the removal orbit of clamp plate and first screw board, prevents the skew from appearing, avoids influencing the thread rolling process.

4. Through the arrangement of the inserting plate and the inserting groove, the second thread rolling plate is arranged at the top of the moving block through the inserting plate and the inserting groove, so that the second thread rolling plate can be detached from the moving block, and the second thread rolling plate is convenient to clean and maintain.

5. Through setting up the roller, the roller plays the supporting role between the inner wall of movable block and box body bottom, has increased the stability of movable block, and the roller can realize rotating simultaneously, avoids influencing the smooth degree of movable block motion process.

6. Through the arrangement of the rotating plate and the comb teeth, after the tow fibers leave the discharging roller, the comb teeth are inserted into the tow fibers to play a pre-dispersing effect, so that the tow is more easily separated between the first thread rolling plate and the second thread rolling plate, and the stop rod is limited at the bottom of the rotating plate, so that the rotating plate cannot continue to rotate downwards.

Drawings

FIG. 1 is a cross-sectional view of a tow spreading device for a nonwoven fabric machine according to the present invention;

FIG. 2 is a schematic structural view of a position A of a tow spreading device for a non-woven fabric machine according to the present invention;

FIG. 3 is a schematic structural diagram of a tow spreading device for a nonwoven fabric machine at position B according to the present invention;

FIG. 4 is a schematic structural diagram of a box body and a moving block of the tow diffusion device for a non-woven fabric machine according to the present invention;

FIG. 5 is a schematic structural view of a push rod motor and a shaping plate of the tow diffusing device for a non-woven fabric machine according to the present invention;

fig. 6 is a schematic structural diagram of a rotating plate and comb teeth of a tow spreading device for a non-woven fabric machine according to the present invention.

In the figure: 1-box body, 2-screw inlet, 3-discharging roller, 4-crank connecting rod, 5-bracket, 6-roller, 7-box body, 8-moving block, 9-receiving roller, 10-screw outlet, 11-shaping plate, 12-connecting plate, 13-push rod motor, 14-limiting rod, 15-limiting sleeve, 16-pressing plate, 17-top plate, 18-pulling block, 19-rotating plate, 20-electromagnet, 21-magnet frame, 22-fixed pulley, 23-inhaul cable, 24-winding roller, 25-fixing frame, 26-crank, 27-rotating plate frame, 28-first screw plate, 29-groove, 30-bump, 31-second screw plate, 32-inserting plate, 33-limiting groove, 34-limiting block, 35-roller frame, 36-slot, 37-chute, 38-slide block, 39-stop rod and 40-comb.

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.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-6, a tow diffusing device for non-woven fabric machinery comprises a box body 1, a tow inlet 2 and a tow outlet 10, wherein the tow inlet 2 is arranged at the bottom of one side of the box body 1, the tow outlet 10 is arranged at the bottom of one side of the box body 1 far away from the tow inlet 2, the inner wall of one side of the box body 1 close to the tow inlet 2 is rotatably connected with a discharging roller 3 through a bearing, the inner wall of one side of the box body 1 close to the tow outlet 10 is rotatably connected with a material receiving roller 9 through a bearing, four brackets 5 which are distributed in a rectangular shape are fixedly connected at the middle position of the inner wall at the bottom of the box body 1, the tops of the four brackets 5 are fixedly connected with a same box body 7, a moving block 8 is slidably connected inside the box body 7, two second tow plates 31 are arranged at the tops of the two tow plates 31, a top plate is arranged as an arc surface, a top plate 17 is, and the bottom of the spring is fixedly connected with a pressing plate 16, the middle position of the bottom of the pressing plate 16 is fixedly connected with a first thread rolling plate 28, the bottom of the first thread rolling plate 28 is arranged to be an arc surface, the rotating shaft key of the discharging roller 3 is connected with a crank connecting rod 4, and one end, far away from the discharging roller 3, of the crank connecting rod 4 is rotatably connected to one side of the moving block 8 through a bearing.

In the invention, a push rod motor 13 is fixedly connected to one side of the inner wall of the top of a box body 1 close to a material receiving roller 9, a connecting plate 12 is fixedly connected to the bottom of the push rod motor 13, a shaping plate 11 is fixedly connected to the middle position of the bottom of the connecting plate 12, the bottom of the shaping plate 11 is provided with a cambered surface, the connecting plate 12 and the shaping plate 11 are pushed out downwards by the push rod motor 13, the bottom end of the shaping plate 11 is enabled to compress tows, the split fiber tows are in a tight state before reaching the material receiving roller 9, the split tows are prevented from being folded and doubled again, and the cambered surface at the bottom end of the shaping plate 11 is not easy to scratch.

Wherein, the intermediate position fixedly connected with stop collar 15 at roof 17 top, and the intermediate position fixedly connected with gag lever post 14 at clamp plate 16 top, gag lever post 14 pegs graft inside stop collar 15, spacing groove 33 has been seted up at the top of gag lever post 14 one side, the top fixedly connected with stopper 34 of the inner wall of stop collar 15 one side, stopper 34 joint in the inside of spacing groove 33, during first screw plate 28 elevating movement, gag lever post 34 slides along the inside of stop collar 15, stopper 34 slides along the inner wall of spacing groove 33, the removal orbit of clamp plate 16 and first screw plate 28 has been injectd, prevent the skew from appearing, avoid influencing the thread rolling process.

Wherein, one side that box body 7 is close to crank connecting rod 4 sets up to the opening, and box body 7 keeps away from the inner wall of crank connecting rod 4 one side and has seted up spout 37, and moving block 8 is close to one side fixedly connected with slider 38 of spout 37, and slider 38 sliding connection is in the inside of spout 37, and moving block 8 passes through slider 38 and moves along spout 37, restricts the motion path of moving block 8 through spout 37.

Two slots 36 are formed in the top of the moving block 8, the bottom portions of the two second thread rolling plates 31 are fixedly connected with the inserting plates 32, the two inserting plates 32 are respectively inserted into the two slots 36, and the second thread rolling plates 31 are installed on the top of the moving block 8 through the inserting plates 32 and the slots 36, so that the second thread rolling plates 31 can be detached from the moving block 8, and the second thread rolling plates 31 can be cleaned and maintained conveniently.

The two second thread rolling plates 31 are provided with thread rolling grooves which are uniformly distributed on the sides close to each other, the pressure between the filament bundles and the second thread rolling plates 31 is increased through the thread rolling grooves, and the diffusion effect of the filament bundles is optimized.

The middle position of the bottom of the first thread rolling plate 28 is provided with a groove 29, the inner wall of the groove 29 is fixedly connected with lugs 30 which are uniformly distributed, the lugs 30 are made of rubber, and the lugs 30 made of rubber increase the friction force of the tows in the dispersing process.

Wherein, the bottom of movable block 8 is provided with two rollers 6, and the both ends of roller 6 all are connected with roller frame 35 through the bearing rotation, and the equal fixed connection of roller frame 35 has increased the stability of movable block 8 in the bottom of movable block 8, and roller 6 plays the supporting role between the inner wall of movable block 8 and box body 7 bottom, and roller 6 can realize rotating simultaneously, avoids influencing the smooth degree of movable block 8 course of motion.

The inner wall of the box body 1, which is close to one side of the thread inlet 2, is fixedly connected with two rotating plate frames 27, the two rotating plate frames 27 are connected with one rotating plate 19 in a rotating mode, the bottom of the rotating plate 19 is fixedly connected with comb teeth 40 which are distributed equidistantly, the two rotating plate frames 27 are fixedly connected with one blocking rod 39, the blocking rod 39 is attached to the bottom of the rotating plate 19, after the tow fibers leave the discharging roller 3, the comb teeth 40 are inserted into the tow fibers to achieve a pre-dispersion effect, the tow is separated between the first thread rolling plate 28 and the second thread rolling plate 31 more easily, and the blocking rod 39 is limited at the bottom of the rotating plate 19, so that the rotating plate 19 cannot continue to rotate downwards.

Wherein, the outer wall of the box body 1 near one side of the wire inlet 2 is fixedly connected with a fixed mount 25, the inside of the fixed mount 25 is rotatably connected with a wind-up roll 24 through a bearing, the rotating shaft of the wind-up roll 24 is fixedly connected with a crank 26 through a spline, the top of the box body 1 near one side of the wind-up roll 24 is provided with a through hole, the inner wall of the through hole is rotatably connected with a fixed pulley 22 through a bearing, the top of the rotating plate 19 is fixedly connected with a pull block 18, the same inhaul cable 23 is fixedly connected between the pull block 18 and the wind-up roll 24, the middle part of the inhaul cable 23 is wound in a wheel groove of the fixed pulley 22, the top of the inner wall of the box body 1 near one side of the rotating plate 19 is fixedly connected with a magnet frame 21, one side of the magnet frame 21 is fixedly connected with an electromagnet 20, the rotating plate 19 is made of steel material, the wind-up roll, so as to load the discharging roller 3, the fixed pulley 22 changes the force direction of the inhaul cable 23 in the process of lifting the rotating plate 19.

The working principle is as follows: the non-woven fabric fiber which is not divided into threads is wound on the discharging roller 3, the fiber passes through a space between the first thread rolling plate 28 and the second thread rolling plate 31 and is finally wound on the receiving roller 9, after the tow fiber leaves the discharging roller 3, the comb teeth 40 are inserted into the tow fiber, the pre-dispersion effect is achieved, the motor drives the receiving roller 9 to rotate, the fiber is driven to be gradually transferred to the receiving roller 9 from the discharging roller 3, the discharging roller 3 is driven to rotate by the fiber, the crank connecting rod 4 and the discharging roller 3 synchronously rotate and drive the moving block 8 to do left-right reciprocating mechanical motion in the box body 7, the two second thread rolling plates 31 sequentially impact the first thread rolling plate 28 back and forth, so that the fiber positioned at the gap is kneaded and divided, the first thread rolling plate 28 is extruded and then ascended, the spring is extruded through the pressing plate 16, and after the second thread rolling plate 31 leaves the first thread rolling plate 28, the spring pushes the pressing plate 16 and the first thread rolling plate 28 to be reset downwards, preparing for next impact with the second thread rolling plate 31, realizing tow diffusion through the co-rubbing of the first thread rolling plate 28 and the second thread rolling plate 31, when the first thread rolling plate 28 moves up and down, the limiting rod 34 slides along the inside of the limiting sleeve 15, the limiting rod 34 slides along the inner wall of the limiting groove 33, the moving tracks of the pressing plate 16 and the first thread rolling plate 28 are limited, the push rod motor 13 pushes the connecting plate 12 and the shaping plate 11 downwards, so that the bottom end of the shaping plate 11 compresses the tows, and the fiber tows after filament separation are in a tight state before reaching the material collecting roller 9.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A tow diffusion device for non-woven fabric machinery comprises a box body (1), a tow inlet (2) and a tow outlet (10), wherein the tow inlet (2) is arranged at the bottom of one side of the box body (1), and the tow outlet (10) is arranged at the bottom of one side, far away from the tow inlet (2), of the box body (1), and is characterized in that the inner wall, close to one side of the tow inlet (2), of the box body (1) is rotatably connected with a discharging roller (3) through a bearing, the inner wall, close to one side of the tow outlet (10), of the box body (1) is rotatably connected with a material receiving roller (9) through a bearing, four supports (5) which are distributed in a rectangular shape are fixedly connected at the middle position of the inner wall at the bottom of the box body (1), the top of the four supports (5) is fixedly connected with the same box body (7), a movable block (8) is slidably connected inside the box body (7), and two second tow rolling plates, the top of the two thread rolling plates (31) is set to be an arc surface, a top plate (17) is fixedly connected to the upper portion of the box body (7), a spring is fixedly connected to the middle of the bottom of the top plate (17), a pressing plate (16) is fixedly connected to the bottom of the spring, a first thread rolling plate (28) is fixedly connected to the middle of the bottom of the pressing plate (16), the bottom of the first thread rolling plate (28) is set to be the arc surface, a crank connecting rod (4) is connected to a rotating shaft key of the discharging roller (3), and one end, far away from the discharging roller (3), of the crank connecting rod (4) is rotatably connected to one side of the moving block (8) through a bearing.

2. The tow spreading device for the non-woven fabric machine is characterized in that a push rod motor (13) is fixedly connected to one side, close to the material receiving roller (9), of the inner wall of the top of the box body (1), a connecting plate (12) is fixedly connected to the bottom of the push rod motor (13), a shaping plate (11) is fixedly connected to the middle position of the bottom of the connecting plate (12), and the bottom of the shaping plate (11) is arranged to be an arc surface.

3. The tow spreading device for the non-woven fabric machine is characterized in that a limiting sleeve (15) is fixedly connected to the middle position of the top plate (17), a limiting rod (14) is fixedly connected to the middle position of the top of the pressing plate (16), the limiting rod (14) is inserted into the limiting sleeve (15), a limiting groove (33) is formed in the top of one side of the limiting rod (14), a limiting block (34) is fixedly connected to the top of the inner wall of one side of the limiting sleeve (15), and the limiting block (34) is clamped in the limiting groove (33).

4. The tow spreading device for the non-woven fabric machine is characterized in that one side, close to the crank connecting rod (4), of the box body (7) is provided with an opening, a sliding groove (37) is formed in the inner wall, away from the crank connecting rod (4), of the box body (7), a sliding block (38) is fixedly connected to one side, close to the sliding groove (37), of the moving block (8), and the sliding block (38) is connected to the inside of the sliding groove (37) in a sliding mode.

5. The tow diffusion device for the non-woven fabric machine is characterized in that two slots (36) are formed in the top of the moving block (8), inserting plates (32) are fixedly connected to the bottoms of the two second thread rolling plates (31), and the two inserting plates (32) are respectively inserted into the two slots (36).

6. The tow spreading device for non-woven fabric machines according to claim 1, wherein the two second thread rolling plates (31) are provided with thread rolling grooves which are uniformly distributed on the sides close to each other.

7. The tow spreading device for non-woven fabric machines according to claim 6, wherein a groove (29) is formed in the middle of the bottom of the first thread rolling plate (28), the inner wall of the groove (29) is fixedly connected with uniformly distributed bumps (30), and the bumps (30) are made of rubber.

8. The tow spreading device for the non-woven fabric machine is characterized in that two rollers (6) are arranged at the bottom of the moving block (8), two ends of each roller (6) are rotatably connected with a roller frame (35) through bearings, and the roller frames (35) are fixedly connected to the bottom of the moving block (8).

9. The tow spreading device for the non-woven fabric machine is characterized in that two rotating plate frames (27) are fixedly connected to the inner wall of one side, close to the tow inlet (2), of the box body (1), the same rotating plate (19) is rotatably connected between the two rotating plate frames (27), comb teeth (40) which are distributed equidistantly are fixedly connected to the bottom of the rotating plate (19), the same baffle rod (39) is fixedly connected between the two rotating plate frames (27), and the baffle rod (39) is attached to the bottom of the rotating plate (19).

10. The tow spreading device for the non-woven fabric machine according to claim 9, wherein a fixing frame (25) is fixedly connected to the outer wall of one side of the box body (1) close to the tow inlet (2), a wind-up roll (24) is rotatably connected to the inside of the fixing frame (25) through a bearing, a crank (26) is fixedly connected to the rotating shaft of the wind-up roll (24) through a spline, a through hole is formed in the top of one side of the box body (1) close to the wind-up roll (24), a fixed pulley (22) is rotatably connected to the inner wall of the through hole through a bearing, a pull block (18) is fixedly connected to the top of the rotating plate (19), the same pull cable (23) is fixedly connected between the pull block (18) and the wind-up roll (24), the middle part of the pull cable (23) is wound around the race of the fixed pulley (22), and a magnet frame (21) is fixedly, one side of the magnet frame (21) is fixedly connected with an electromagnet (20), and the rotating plate (19) is made of steel materials.