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CN-122026662-A - Self-boosting type brake integrated device of servo linear module

CN122026662ACN 122026662 ACN122026662 ACN 122026662ACN-122026662-A

Abstract

The invention discloses a self-boosting type braking integrated device of a servo linear module, which belongs to the technical field of brakes and comprises a screw rod seat, wherein a screw rod is arranged on the screw rod seat, a sliding block is connected to the screw rod through a threaded sleeve in a threaded transmission manner, the lower end of the sliding block is connected with a sliding rail in a sliding manner, the sliding rail is fixedly connected to the screw rod seat, one end of the screw rod is fixedly connected with a servo motor, one end of the screw rod, which is far away from the servo motor, is connected with a band-type brake assembly through a coupling, and the band-type brake assembly is used for braking rotation of the screw rod. According to the invention, the cooperation of two groups of band-type brake components respectively adaptive to the forward and reverse rotation of the turntable can be realized, the forward and reverse rotation full-steering self-boosting braking coverage is realized, the pain points that the reverse braking of a single band-type brake component does not have self-boosting and the braking effect is unbalanced are thoroughly solved, the high-efficiency braking with the over rotation and the over tightening can be realized no matter the forward and reverse rotation of the turntable, the problems of sliding of a sliding block and positioning deviation under the reverse rotation working condition are avoided, and the braking reliability is greatly improved.

Inventors

  • Xie Shaochao
  • LIU RONGJIE
  • ZHANG ZHIMIN
  • LI YANGXIN
  • CHEN YEQIANG
  • XU HONGPING
  • GUO ERLU
  • CHEN HUIHUANG

Assignees

  • 闽江师范高等专科学校
  • 数字(福建)传动科技有限公司

Dates

Publication Date
20260512
Application Date
20260415

Claims (10)

  1. 1. The utility model provides a servo sharp module from reinforcement formula braking integrated device, includes lead screw seat (1), be provided with lead screw (4) on lead screw seat (1), be connected with slider (3) through thread bush screw drive on lead screw (4), the lower extreme sliding connection of slider (3) has slide rail (23), slide rail (23) fixed connection is on lead screw seat (1), the one end fixedly connected with servo motor (2), its characterized in that: one end of the screw rod (4) far away from the servo motor (2) is connected with a band-type brake assembly through a coupler (6), and the band-type brake assembly is used for braking rotation of the screw rod (4); Band-type brake subassembly includes band-type brake shell (5), the inside of band-type brake shell (5) is provided with runner (7), at least one side fixedly connected with carousel (8) of left surface and right surface of runner (7), non-contact is provided with control block (9) on the outer disc of runner (7), movable groove (10) have been seted up on the adjacent face of control block (9) and carousel (8), the inside rotation of movable groove (10) is connected with control lever (11), the length of control lever (11) is greater than the distance between the adjacent face of carousel (8) and control block (9), one end fixedly connected with backup pad (12) of movable groove (10) are kept away from to control lever (11), one side fixedly connected with brake shoe (13) of control lever (11) are kept away from to backup pad (12), the position department that just is close to control block (9) on the outer disc of runner (7), the control member is used for control lever (11) to rotate in movable groove (10).
  2. 2. The self-boosting type brake integration device of the servo linear module of claim 1, wherein the control part comprises a steering engine, and a swing arm of the steering engine is connected with the supporting plate (12).
  3. 3. The self-energizing brake integration device of a servo linear module according to claim 1, wherein the control member comprises an electromagnet (15), and a permanent magnet (16) is fixedly connected to the position of the support plate (12) opposite to the electromagnet (15).
  4. 4. The self-boosting brake integrated device of the servo linear module as set forth in claim 3, wherein a group of band-type brake components are further arranged at symmetrical positions of the outer circular surface of the rotating wheel (7) relative to the band-type brake components, and the supporting plates (12) and the control rods (11) in the two band-type brake components face the same direction.
  5. 5. The self-boosting type brake integrated device of the servo linear module set according to claim 4, wherein spacing bars (20) are printed on the outer circular surface of the rotating wheel (7) at equal intervals, a grating sensor (19) is arranged on the outer circular surface of the rotating wheel (7) in a non-contact mode, and the grating sensor (19) is used for detecting the rotating distance and the rotating speed of the rotating wheel (7).
  6. 6. The self-boosting type brake integrated device of the servo linear module set forth in claim 5, wherein the band-type brake assembly further comprises a control module, wherein the control module is used for acquiring a speed signal and a position signal of a rotating wheel (7) acquired by a grating sensor (19) in real time; Based on the deviation of the target position and the real-time position, constructing a position loop and speed loop double closed-loop control logic; when the position deviation enters a preset speed reduction window, controlling the servo motor (2) to perform electric speed reduction until the real-time speed of the rotating wheel (7) is reduced below a preset safety band-type brake speed threshold; Dynamically calculating a theoretical braking trigger point according to the deviation between the current real-time speed and the residual position; when the actual position reaches a theoretical braking trigger point, the electromagnet (15) is controlled to push the permanent magnet (16) to drive the brake disc (13) to press the turntable (8) so as to execute mechanical braking; at the moment of powering on the electromagnet (15), the PWM duty ratio of the coil of the electromagnet (15) is adjusted by detecting the acceleration abrupt change value fed back by the grating sensor (19) so as to execute flexible joint.
  7. 7. The self-energizing brake integration device of a servo linear module of claim 6, wherein the control module further comprises: recording the sliding distance and braking time from the electrifying of the electromagnet (15) to the static state of the turntable (8) in each braking process; comparing the sliding distance with a preset standard sliding distance threshold value, and judging that the brake pad (13) is in a wearing state if the sliding distance is detected to be out of the threshold value range continuously for a plurality of times; Responding to the judgment of the abrasion state, automatically correcting a preset safety band-type brake speed threshold value and a calculation coefficient of a theoretical braking trigger point so as to advance the sending time of a braking instruction; When the motor is started in a static state, the servo motor (2) is controlled to output torque with alternating frequency, whether the rotating wheel (7) has clamping stagnation or not is judged through feedback of the grating sensor (19), and if so, brake release pretreatment is automatically executed.
  8. 8. A self-energizing brake integration device of a servo linear module according to claim 1 or 7, characterized in that a limiting wall (17) is arranged on the inner wall of the movable groove (10), and the limiting wall (17) is used for limiting the rotation of the control rod (11) when the electromagnet (15) adsorbs the permanent magnet (16) so as to prevent the electromagnet (15) from contacting with the permanent magnet (16).
  9. 9. The self-boosting type brake integrated device of the servo linear module set forth in claim 1, wherein an indicator (21) is fixedly connected to the outer wall of the sliding block (3), a graduated scale (22) is fixedly connected to the outer wall of the screw rod seat (1), and the indicator (21) is correspondingly arranged with the graduated scale (22) so that corresponding graduations on the graduated scale (22) are indicated by the indicator (21) when the sliding block (3) moves.
  10. 10. The self-boosting type brake integrated device of the servo linear module set according to claim 7, wherein one side of the grating sensor (19) is fixedly connected with a connecting rod (18), one end, far away from the grating sensor (19), of the connecting rod (18) is fixedly connected with the inner wall of the band-type brake shell (5), the control block (9) is fixedly connected with the inner wall of the band-type brake shell (5), the band-type brake shell (5) is fixedly connected with the screw rod seat (1), the outer part of the electromagnet (15) is fixedly connected with a supporting block (14), and the supporting block (14) is fixedly connected with the control block (9).

Description

Self-boosting type brake integrated device of servo linear module Technical Field The invention relates to the technical field of brakes, in particular to a self-boosting type brake integrated device of a servo linear module. Background Along with the rapid development of the high-end intelligent manufacturing industry, the servo linear module is used as a transmission executing component in the fields of lithium battery equipment, 3C electronic manufacturing, precision machining, semiconductor sealing and measuring, automatic logistics and the like, and the positioning precision, dynamic response performance, braking reliability and operation safety of the servo linear module directly determine the production efficiency, processing yield and safety protection level of the whole equipment, wherein the braking mechanism is used for realizing module emergency stop locking and power-off anti-slip protection and is a safety unit for guaranteeing the safety of equipment and personnel. In the design scheme of the conventional servo linear module, two types of technical paths are adopted in the braking mechanism, namely an electromagnetic band-type brake is integrated at a servo motor end, braking is realized through an output shaft of a locking motor, braking force of the scheme is transmitted to a sliding block through a screw transmission chain, braking hysteresis is caused by backlash and elastic deformation of the transmission chain, braking capacity is completely lost under extreme failure working conditions such as screw breakage and the like, the power failure anti-slip safety requirement of a vertical installation working condition cannot be met, and a single-side disc-type band-type brake structure is independently arranged at the end part of the screw, and the scheme also acts on a screw transmission link, so that additional radial load is introduced during single-side braking, abrasion of the screw and a supporting bearing is aggravated during long-term operation, and the operation precision and the service life of the module are reduced. The two conventional braking schemes adopt the electromagnet to directly push the brake pad to generate positive pressure to realize friction braking, the self-boosting braking effect is avoided, the braking force is completely dependent on the output thrust of the electromagnet, the problems of overlong braking stroke, insufficient braking force and sliding of a sliding block easily occur under heavy-load and high-speed emergency stop working conditions, and the size and the power of the electromagnet are required to be greatly increased if the braking force is required to be improved, so that the development trend of miniaturization and low power consumption of the module is contradicted. Aiming at the defects, the invention provides a self-boosting type brake integrated device of a servo linear module, which aims to solve a plurality of pain points existing in the prior art. Disclosure of Invention Aiming at the problems in the prior art, the invention aims to provide a self-boosting type braking integrated device of a servo linear module, which can realize the self-boosting braking coverage of forward and reverse rotation full-steering through the cooperation of two groups of band-type brake components respectively adapting to forward and reverse rotation of a rotary table, thoroughly solve the problems that the reverse rotation braking of a single band-type brake component has no self-boosting and the braking effect is unbalanced, realize the high-efficiency braking of the rotary table which is more compact when the rotary table is more positive and is reverse rotation, avoid the problems of sliding of a sliding block and positioning deviation under the reverse rotation working condition, and greatly improve the braking reliability. In order to solve the problems, the invention adopts the following technical scheme: The self-boosting type braking integrated device of the servo linear module comprises a screw rod seat, wherein a screw rod is arranged on the screw rod seat, a sliding block is connected to the screw rod through a thread sleeve in a threaded transmission manner, the lower end of the sliding block is connected with a sliding rail in a sliding manner, the sliding rail is fixedly connected to the screw rod seat, and one end of the screw rod is fixedly connected with a servo motor; one end of the screw rod, which is far away from the servo motor, is connected with a band-type brake assembly through a coupler, and the band-type brake assembly is used for braking the rotation of the screw rod; The band-type brake assembly comprises a band-type brake shell, a rotating wheel is arranged in the band-type brake shell, at least one side face of the left side face and the right side face of the rotating wheel are fixedly connected with a rotating disc, a control block is arranged on the outer circular face of the rotating wheel in a non-contact mode, a movable g