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CN-122001173-A - Overload release magnetic coupling of double-screw extruder

CN122001173ACN 122001173 ACN122001173 ACN 122001173ACN-122001173-A

Abstract

The invention discloses an overload release magnetic coupling of a double-screw extruder, and particularly relates to the technical field of couplings, which comprises an outer magnetic rotor, wherein a connecting shaft sleeve is arranged in the outer magnetic rotor, and an inner magnetic rotor is arranged on one side of the connecting shaft sleeve; the sleeve joint block is arranged on the outer wall of the connecting shaft sleeve, the spacer is arranged on the sleeve joint block, the spacer cover is arranged at the top end of the sleeve joint block, and the disconnecting piece is arranged on one side of the sleeve joint block. The invention has the advantages that the outer magnetic rotor and the inner magnetic rotor are easily and automatically separated while the magnetic force is effectively weakened, the overload protection action of the coupler is more time-saving and labor-saving and smoother, so that the problems that the outer magnetic rotor and the inner magnetic rotor are easily and automatically separated while the magnetic force is effectively weakened under the conventional conditions, the overload separation of the coupler is more time-consuming and labor-consuming and difficult to smooth are solved.

Inventors

  • ZHANG QISONG
  • ZHANG JIANJUN
  • HU JUNMING

Assignees

  • 宁波益德新材料有限公司

Dates

Publication Date
20260508
Application Date
20260408

Claims (10)

  1. 1. The overload release magnetic coupling of the double-screw extruder comprises an outer magnetic rotor (1) and is characterized in that a connecting shaft sleeve (2) is arranged in the outer magnetic rotor (1), and an inner magnetic rotor (3) is arranged on one side of the connecting shaft sleeve (2); The connecting block (4) is arranged on the outer wall of the connecting shaft sleeve (2), a spacer is arranged on the connecting block (4), and a spacer cover (5) is arranged at the top end of the connecting block (4); The disconnecting piece is arranged at one side of the sleeving block (4); Under the overload state, the sleeve joint block (4) is driven by the isolating piece, so that the isolating cover (5) moves between the outer magnetic rotor (1) and the inner magnetic rotor (3) to isolate and weaken magnetic force between the outer magnetic rotor (1) and the inner magnetic rotor (3), and the disengaging piece drives the outer magnetic rotor (1) to move along the axial lead of the connecting shaft sleeve (2) so that the outer magnetic rotor (1) and the inner magnetic rotor (3) are separated.
  2. 2. The overload release magnetic coupling for the double-screw extruder, as set forth in claim 1, is characterized in that the outer magnetic rotor (1) and the connecting shaft sleeve (2) are both in sliding connection with the isolation cover (5), and the sleeve joint block (4) is fixedly connected with the isolation cover (5).
  3. 3. The twin screw extruder overload release magnetic coupling of claim 1 wherein the spacer comprises: The screw rod (6) is in threaded connection with the inner wall of the sleeve joint block (4), a guide rod (7) is arranged below the screw rod (6), the guide rod (7) is fixedly connected with the connecting shaft sleeve (2), and the guide rod (7) is used for guiding the sleeve joint block (4) to slide; The motor (8) is arranged at one end part of the screw (6), the outer wall of the motor (8) is fixedly connected with the connecting shaft sleeve (2), the output end of the motor (8) is fixedly connected with the screw (6), and the motor (8) is used for driving the screw (6) to rotate; The inserting ring (9) is fixedly connected to one side of the isolation cover (5), and a groove ring (10) is arranged on one side of the inserting ring (9) in alignment; The plurality of shaft ball sleeves (11) are fixedly connected to one side of the inner wall of the groove ring (10), and balls (12) are arranged on the inner wall of each groove ring (10) in a rolling manner; The flange cover (24) is fixedly connected to the inner wall of the groove ring (10); and a sleeve plate (25) fixedly mounted on one end of the flange cover (24).
  4. 4. The overload release magnetic coupling of a double-screw extruder as set forth in claim 3, wherein the thickness of the insert ring (9) is smaller than the thickness of the isolation cover (5), and the vertical cross-sectional shapes of the insert ring (9) and the isolation cover (5) are circular.
  5. 5. The overload release magnetic coupling of a twin-screw extruder as claimed in claim 3, wherein the centre point of the slotted ring (10) is level with the centre point of the balls (12).
  6. 6. The overload release magnetic coupling of the double-screw extruder according to claim 3, wherein a battery (13) is arranged on one side of the motor (8), a wireless controller (14) is arranged on the upper surface of the battery (13), the motor (8) is electrically connected with the wireless controller (14), and the battery (13) is fixedly connected with the connecting sleeve (2).
  7. 7. The twin screw extruder overload release magnetic coupling of claim 1 wherein the release member comprises: The strip sleeving frame (15) is fixedly connected to one side of the sleeving block (4), and a steering engine (16) is arranged in the strip sleeving frame (15); The shaft body (17) is arranged at the output end of the steering engine (16), and the steering engine (16) is used for driving the shaft body (17) to rotate; The inclined sleeve strip (18) is fixedly connected to the outer wall of the shaft body (17), two sleeve connecting frames (19) are fixed at one end part of the outer magnetic rotor (1), and a movable column (20) is fixed at the bottom end of the inner wall of one sleeve connecting frame (19); The guide post (21) is arranged on the inner wall of the sleeve joint frame (19), the guide post (21) is used for guiding the sleeve joint frame (19) to slide, a support frame (23) is arranged at one end part of the guide post (21), and the connecting sleeve (2) and the guide post (21) are fixedly connected with the support frame (23); The spring (22) is arranged on the outer wall of the guide post (21) and is positioned on one side of the sleeving frame (19), and the spring (22) is used for providing elasticity for the sleeving frame (19).
  8. 8. The overload release magnetic coupling for a twin-screw extruder according to claim 7, wherein the two sleeved brackets (19) are arranged in a circumferential distribution, and the support frame (23) is in sliding connection with the sleeved brackets (19).
  9. 9. The overload release magnetic coupling for a twin-screw extruder as set forth in claim 7, wherein the top end surface of the movable column (20) is in the same horizontal plane as the upper surface of the diagonal jacket strip (18), and the cross section of the movable column (20) is circular.
  10. 10. The overload release magnetic coupling for the double-screw extruder, as set forth in claim 1, is characterized in that the inner wall of the inner magnetic rotor (3) is inserted with a double-screw transmission shaft (26), and the inner wall of the connecting shaft sleeve (2) is inserted with a driving shaft (27).

Description

Overload release magnetic coupling of double-screw extruder Technical Field The invention relates to the technical field of couplings, in particular to an overload release magnetic coupling of a double-screw extruder. Background When the double-screw extruder is used, the double-screw extruder is required to be connected through the magnetic coupling, magnetic force non-contact torque transmission can be realized, and the leakage risk of the traditional mechanical coupling can be effectively avoided. Among the existing publications, patent publication number CN114810860A discloses an FCT magnetic coupling, a hub assembly and a bicycle, and the technology changes the traditional thread-fixed coupling into a clearance fit combined transmission structure, so that the FCT magnetic coupling dynamically fine-adjusts the center position according to the meshing condition of a jack sheet of a ratchet assembly to enable the transmission center of an inner tooth and the jack sheet to be concentric with the transmission center of an outer tooth and the hub during operation, thereby overcoming the limitation that thread manufacturing cannot be concentric, eliminating abnormal noise and improving the use experience. However, this patent has the following problems. When the double-screw extruder is in overload operation, the double-screw extruder is usually connected by means of a magnetic shaft connector, when the torque force is overlarge, the outer magnetic rotor and the inner magnetic rotor can continuously slip, the driving force can still be continuously applied, the magnetic force between the outer magnetic rotor and the inner magnetic rotor is strong at the moment, the force required for disengaging is extremely large, the axial disengaging faces heavy difficulty, the outer magnetic rotor and the inner magnetic rotor are easily and automatically disengaged when the magnetic force is effectively weakened under the conventional condition, and the overload disengaging of the coupler is more time-consuming and labor-consuming and difficult to smooth. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides the technical scheme that the overload release magnetic coupling of the double-screw extruder comprises an outer magnetic rotor, wherein a connecting shaft sleeve is arranged in the outer magnetic rotor, and an inner magnetic rotor is arranged on one side of the connecting shaft sleeve; the connecting sleeve is arranged on the outer wall of the connecting sleeve, a spacer is arranged on the connecting sleeve, and a spacer cover is arranged at the top end of the connecting sleeve; The disconnecting piece is arranged at one side of the sleeving block; and in an overload state, the sleeve joint block is driven by the isolating piece, so that the isolating cover moves between the outer magnetic rotor and the inner magnetic rotor to isolate and weaken magnetic force between the outer magnetic rotor and the inner magnetic rotor, and the disengaging piece drives the outer magnetic rotor to move along the axial lead of the connecting shaft sleeve, so that the outer magnetic rotor and the inner magnetic rotor are disengaged. In a preferred embodiment, the outer magnetic rotor and the connecting shaft sleeve are both in sliding connection with the isolation cover, and the sleeve joint block is fixedly connected with the isolation cover. In a preferred embodiment, the spacer includes: The screw rod is in threaded connection with the inner wall of the sleeving block, a guide rod is arranged below the screw rod, the guide rod is fixedly connected with the connecting shaft sleeve, and the guide rod is used for guiding the sleeving block to slide; The motor is arranged at one end part of the screw rod, the outer wall of the motor is fixedly connected with the connecting shaft sleeve, the output end of the motor is fixedly connected with the screw rod, and the motor is used for driving the screw rod to rotate; the inserting ring is fixedly connected to one side of the isolation cover, and a groove ring is arranged on one side of the inserting ring in an aligned manner; the plurality of axle ball sleeves are fixedly connected to one side of the inner wall of the groove ring, and balls are arranged on the inner wall of each groove ring in a rolling manner; the flange cover is fixedly connected to the inner wall of the groove ring; and the shaft sleeve plate is fixedly arranged at one end part of the flange cover. In a preferred embodiment, the thickness of the insert ring is smaller than that of the isolation cover, and the vertical cross-sectional shapes of the insert ring and the isolation cover are circular. In a preferred embodiment, the center point of the groove ring is on the same horizontal line with the center point of the ball. In a preferred embodiment, a battery is arranged on one side of the motor, a wireless controller is arranged on the upper surface of the battery, the motor i