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CN-224204901-U - Linear type servo electric cylinder

CN224204901UCN 224204901 UCN224204901 UCN 224204901UCN-224204901-U

Abstract

The utility model discloses a linear servo electric cylinder which comprises a motor, a reduction gearbox, a screw rod, a guide rod and a screw rod nut, wherein the motor is connected with an input shaft of the reduction gearbox, an output shaft of the reduction gearbox is connected with the screw rod, the guide rod and the screw rod are arranged on the same side of the reduction gearbox in parallel, the motor, the reduction gearbox and the guide rod are integrally formed, the screw rod nut is in threaded connection with the screw rod, a guide groove extending along the axial direction of the guide rod is formed in the screw rod nut, and the guide rod is slidably connected with the guide groove in a matched mode. The linear type servo electric cylinder effectively reduces the overall dimension of the whole electric cylinder, reduces the number of parts due to the integrally formed design, reduces the cost of raw materials, simplifies the production and manufacturing process, and reduces the assembly process and the labor cost. At the same time, fewer parts means fewer fault points, and the later maintenance cost is reduced.

Inventors

  • CHENG ERTING

Assignees

  • 北京玛格粒特信息咨询中心(有限合伙)

Dates

Publication Date
20260505
Application Date
20250403

Claims (16)

  1. 1. A linear type servo electric cylinder, characterized by comprising the following steps: The device comprises a motor (1), a reduction gearbox (2), a screw rod (3) and a guide rod (4), wherein the motor (1) is connected with an input shaft of the reduction gearbox (2), an output shaft of the reduction gearbox (2) is connected with the screw rod (3) so as to drive the screw rod (3) to rotate, and the guide rod (4) and the screw rod (3) are arranged on the same side of the reduction gearbox (2) in parallel, wherein the motor (1), the reduction gearbox (2) and the guide rod (4) are integrally formed; the screw rod nut (5), screw rod nut (5) with screw rod (3) transmission links to each other, set up on screw rod nut (5) follow guide bar (4) axially extending guide slot (501), guide bar (4) slidable with guide slot (501) cooperation links to each other.
  2. 2. The linear servo cylinder according to claim 1, wherein the guide rods (4) have a plurality, and the plurality of guide rods (4) are arranged at intervals along the circumferential direction of the screw rod (3).
  3. 3. The linear servo cylinder according to claim 1, characterized in that the side wall of the screw nut (5) is provided with an opening (502) communicating with the guide groove (501).
  4. 4. The linear servo cylinder according to claim 1, comprising a brush (6) and a sensor circuit board (7), wherein one of the brush (6) and the sensor circuit board (7) is connected with the reduction gearbox (2), the other of the brush (6) and the sensor circuit board (7) is connected with the screw nut (5), and the brush (6) is in sliding fit with the sensor circuit board (7) in the axial direction of the screw (3) and is conducted so that the sensor circuit board (7) judges the position information of the screw nut (5).
  5. 5. The linear servo cylinder according to claim 4, wherein a conductive carbon crystal powder layer is provided on an end face of the sensor circuit board (7) adjacent to the brush (6).
  6. 6. The linear servo cylinder according to claim 4, wherein the brush (6) is provided to be bent in the axial direction of the lead screw (3) toward the sensor wiring board (7).
  7. 7. The linear servo cylinder according to claim 6, wherein the brush (6) comprises a linear section (601), a bending section (602) and an arc section (603) which are sequentially connected, the linear section (601) extends along the axial direction of the screw rod (3) and is connected with the screw rod nut (5), the bending section (602) bends towards the direction of the sensor circuit board (7) in the axial direction of the screw rod (3), an opening (502) of the arc section (603) is arranged away from the sensor circuit board (7), and the bottom of the arc section (603) is abutted to the sensor circuit board (7).
  8. 8. The linear servo electric cylinder according to claim 7, comprising a mounting plate (8), wherein a connecting hole (801) is formed in the mounting plate (8), a connecting column (9) is arranged on the screw nut (5), the connecting column (9) is connected with the connecting hole (801), and at least a part of the linear section (601) is attached to the mounting plate (8).
  9. 9. The linear servo cylinder according to claim 1, characterized in that the guide rod (4) is provided with a stop member (10), the stop member (10) is located at a side of the screw nut (5) axially away from the reduction gearbox (2), and the stop member (10) is used for stopping the screw nut (5).
  10. 10. The linear servo cylinder according to claim 4, further comprising a cover plate (11), a bottom plate (12), a circuit board (13) and a fixing plate (14), wherein the circuit board (13) and the sensor circuit board (7) are arranged on both sides of the fixing plate (14) in the thickness direction thereof, the circuit board (13) is in signal connection with the sensor circuit board (7), the fixing plate (14) is connected with the bottom plate (12), and the cover plate (11) is detachably covered on the bottom plate (12).
  11. 11. The linear servo cylinder of claim 10, further comprising a motor mount (15), the motor mount (15) being removably coupled to the base plate (12).
  12. 12. The linear servo cylinder according to claim 4, wherein the reduction gearbox (2) comprises a gearbox body (201), a fixed seat (202) and a supporting plate (203), the motor (1) is connected with the gearbox body (201), the fixed seat (202) is arranged on one side, far away from the motor (1), of the gearbox body (201), the supporting plate (203) is arranged on one side, far away from the gearbox body, of the fixed seat (202) and extends along the axial direction of the screw rod (3), the guide rod (4) is connected with one of the fixed seat (202) and the gearbox body (201), the fixed seat (202) is provided with a first through hole (2021) for the screw rod (3) to penetrate, and the sensor circuit board (7) is attached to the supporting plate (203).
  13. 13. The linear servo cylinder according to claim 12, wherein a groove (2031) is formed in an end face, adjacent to the brush (6), of the support plate (203), the groove (2031) extends along the axial direction of the screw rod (3), the sensor circuit board (7) is attached to the bottom wall of the groove (2031), and at least a part of the brush (6) is located in the groove (2031).
  14. 14. The linear servo cylinder according to claim 13, characterized in that the screw nut (5) comprises a nut body (503) and a mounting seat (504), the mounting seat (504) having a channel (5041) extending in the axial direction of the screw (3), the channel (5041) being for the support plate (203) to pass through, the brush (6) being provided on the inner wall of the channel (5041).
  15. 15. The linear servo cylinder according to claim 14, wherein a chute (5042) extending in the axial direction of the screw rod (3) is formed in an inner wall of the passage (5041), and a portion of the support plate (203) is disposed in the chute (5042) and slidably cooperates with the chute (5042) in the axial direction of the screw rod (3).
  16. 16. The linear servo cylinder according to claim 12, further comprising a motor mount (15), the motor mount (15) being connected to the motor (1).

Description

Linear type servo electric cylinder Technical Field The utility model relates to the technical field of industrial automatic control equipment, in particular to a linear type servo electric cylinder. Background The servo electric cylinder is used as a device for converting the rotary motion of a motor into linear motion, is widely applied to various fields of automatic production lines, medical equipment, aerospace, electronic equipment manufacturing and the like, and provides accurate linear motion control for various devices. Along with the continuous development of industrial equipment to miniaturization and integration, the requirements on the external dimensions of the miniature servo electric cylinder are more and more severe. In the related art, because of excessive parts of the miniature servo electric cylinder, the occupied space is large, and the problems of large size and high cost exist. Disclosure of utility model The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, an embodiment of the present utility model proposes a linear type servo cylinder. The linear servo electric cylinder comprises a motor, a reduction gearbox, a screw rod, a guide rod and a screw rod nut, wherein the motor is connected with an input shaft of the reduction gearbox, an output shaft of the reduction gearbox is connected with the screw rod to drive the screw rod to rotate, the guide rod and the screw rod are arranged on the same side of the reduction gearbox in parallel, the motor, the reduction gearbox and the guide rod are integrally formed, the screw rod nut is in threaded connection with the screw rod, a guide groove extending along the axial direction of the guide rod is formed in the screw rod nut, and the guide rod is slidably connected with the guide groove in a matched mode. In some embodiments, the guide bar has a plurality of guide bars, and the plurality of guide bars are arranged at intervals along the circumferential direction of the screw. In some embodiments, the side wall of the lead screw nut is provided with an opening communicated with the guide groove. In some embodiments, the linear servo cylinder of the embodiment of the utility model comprises a brush and a sensor circuit board, wherein one of the brush and the sensor circuit board is connected with the reduction gearbox, the other of the brush and the sensor circuit board is connected with the screw nut, and the brush is in sliding fit with and is conducted with the sensor circuit board in the axial direction of the screw so that the sensor circuit board can judge the position information of the screw nut. In some embodiments, a conductive carbon crystal powder layer is arranged on an end face of the sensor circuit board adjacent to the electric brush. In some embodiments, the brush is bent along an axial direction of the screw rod toward the sensor circuit board. In some embodiments, the brush includes consecutive straightway, bending section and arc section, the straightway is followed the axial extension of lead screw and with the lead screw nut links to each other, the bending section is in the axial of lead screw is upwards towards the direction of sensor circuit board is buckled, the opening of arc section deviates from the sensor circuit board sets up, just the bottom of arc section ends in on the sensor circuit board. In some embodiments, the linear servo cylinder of the embodiment of the utility model comprises a mounting plate, wherein a connecting hole is formed in the mounting plate, a connecting column is arranged on the screw nut, the connecting column is connected with the connecting hole, and at least one part of the linear section is attached to the mounting plate. In some embodiments, a stop member is provided on the guide rod, the stop member being located on a side of the screw nut axially away from the reduction gearbox, the stop member being configured to stop the screw nut. In some embodiments, the linear servo cylinder according to the embodiments of the present utility model further includes a cover plate, a base plate, a circuit board, and a fixing plate, where the circuit board and the sensor circuit board are disposed on two sides of the fixing plate in a thickness direction thereof, the circuit board is in signal connection with the sensor circuit board, the fixing plate is connected with the base plate, and the cover plate is detachably disposed on the base plate. In some embodiments, the linear servo cylinder of the embodiments of the present utility model further comprises a motor base detachably connected to the base plate. In some embodiments, the reduction gearbox comprises a box body, a fixing base and a supporting plate, the motor is connected with the box body, the fixing base is arranged on one side of the box body away from the motor, the supporting plate is arranged on one side of the fixing base away from the box body and extends alo