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CN-224215999-U - Stroke measuring mechanism with encoder

CN224215999UCN 224215999 UCN224215999 UCN 224215999UCN-224215999-U

Abstract

The utility model discloses a stroke measuring mechanism of an encoder, and belongs to the technical field of screw transmission devices. The mechanism comprises a base, a motor is arranged at the top of the base, an output shaft of the motor is connected with a speed reducer, an output shaft of the speed reducer is connected with a screw rod through a coupler, the stroke measuring mechanism further comprises an encoder, the encoder and the screw rod are driven through a synchronous belt, a control circuit is connected between a signal output end of the encoder and a wiring terminal of the motor, the encoder is driven by the screw rod to measure the actual stroke of the screw rod, the rotating angle of the screw rod can be measured more accurately, and then the accurate stroke of the screw rod is obtained.

Inventors

  • ZHANG FANG
  • Zhang Quyi
  • GUO YINGYING
  • JIANG XIAOJING
  • DONG BIN
  • Xiu Haidong

Assignees

  • 沈阳赛美特新材料科技有限公司

Dates

Publication Date
20260508
Application Date
20250721

Claims (7)

  1. 1. The utility model provides a travel measurement mechanism of encoder, includes base (9), motor (10) are installed at base (9) top, the output shaft of motor (10) is connected with speed reducer (6), the output shaft of speed reducer (6) is connected with lead screw (8) through shaft coupling (7), lead screw (8) are connected with base (9) rotation through the bearing, a serial communication port, still include encoder (4), encoder (4) are installed in one side of base (9), first synchronous pulley (1) are installed in the junction of lead screw (8) upper portion and shaft coupling (7), second synchronous pulley (3) are installed at the axle head of encoder (4), be connected with rubber hold-in range (2) between first synchronous pulley (1) and second synchronous pulley (3); A control circuit (5) is connected between the signal output end of the encoder (4) and a connecting terminal of the motor (10).
  2. 2. The stroke measuring mechanism of an encoder according to claim 1, wherein the control circuit (5) comprises a programmable controller (13) and a servo driver (12), the motor (10) is a servo motor, the signal output end of the encoder (4) is connected with the pulse quantity input end of the programmable controller (13), the pulse quantity output end of the programmable controller (13) is connected with the pulse signal input end of the servo driver (12), the direction input end of the servo driver (12) is connected with the switching value output end of the programmable controller (13), and the power output terminal of the servo driver (12) is connected with the motor (10).
  3. 3. A stroke measuring mechanism for an encoder as claimed in claim 1, wherein said control circuit (5) comprises a programmable controller (13) and a frequency converter (14), the digital output of said programmable controller (13) being connected to the digital input of said frequency converter (14), the signal output of said encoder (4) being connected to the pulse input of said programmable controller (13), the power output terminal of said frequency converter (14) being connected to the motor (10).
  4. 4. A stroke measuring mechanism for an encoder as claimed in any one of claims 1 to 3 wherein said first synchronous pulley (1) is an L-shaped straight bore synchronous pulley and said second synchronous pulley (3) is an aluminum alloy synchronous pulley.
  5. 5. A stroke measuring mechanism for an encoder according to any one of claims 1 to 3, wherein the encoder (4) is a multi-turn absolute value encoder.
  6. 6. A stroke measuring mechanism for an encoder according to any one of claims 1-3, wherein a protective cover (11) is provided on the second timing pulley (3), the encoder (4) being located in the protective cover (11).
  7. 7. A stroke measuring mechanism for an encoder according to claim 2 or 3, wherein the programmable controller (13) is connected to an upper computer or an industrial ethernet bus via an RS485 serial port.

Description

Stroke measuring mechanism with encoder Technical Field The utility model belongs to the technical field of screw transmission devices, and particularly relates to a stroke measuring mechanism of an encoder. Background The screw drive on electroslag remelting furnace (electroslag furnace) is one of its core actuators, and bears the key task of accurately, stably and reliably controlling the position and lowering speed of consumable electrode. In the electroslag remelting process, the depth of the lower end of the consumable electrode immersed in the slag bath needs to be kept relatively constant so as to maintain stable slag bath resistance (slag resistance), thereby ensuring the stability of smelting current and power. The lead screw transmission device can accurately and continuously adjust the position of the electrode to compensate the shortened length caused by electrode melting. In the prior art, in order to measure the actual stroke of a screw rod, the actual stroke of the screw rod needs to be measured by recording the rotating speed and the rotating time of a motor connected with the screw rod, and the screw rod stroke is obtained according to the product of the two parameters, however, as a multi-stage mechanical transmission device such as a speed reducer, a reverser and the like is often arranged between the motor and the screw rod, a transmission gap and an error are often arranged between the mechanical transmission device, so that a certain error exists between the screw rod stroke obtained through the rotating speed and the rotating time of the motor and the actual stroke of the screw rod, the stroke length of the screw rod cannot be precisely controlled and adjusted, and the smelting quality of the electroslag furnace is further influenced, and in addition, when the position of an electrode of the electroslag furnace is controlled, the rotating speed and the running time designated by the motor are often set according to a set value, the closed-loop control cannot be performed according to the actual stroke of the screw rod, and the position of the electrode of the electroslag furnace is unfavorable for real-time adjustment. For the above reasons, there is a need for a screw stroke measuring device that can accurately measure a screw stroke and can control a screw driving motor in a closed loop based on the measured value. Disclosure of utility model The utility model provides a stroke measuring mechanism of an encoder, and aims to solve the problems that a screw rod transmission device of an electroslag furnace is unfavorable for accurately controlling the stroke of a screw rod and a screw rod driving motor cannot be regulated in a closed loop according to the actual stroke of the screw rod in the prior art. In order to achieve the above purpose, the present utility model adopts the following technical scheme: the stroke measuring mechanism comprises a base, wherein a motor is arranged at the top of the base, an output shaft of the motor is connected with a speed reducer, an output shaft of the speed reducer is connected with a lead screw through a coupler, the lead screw is rotationally connected with the base through a bearing, the stroke measuring mechanism further comprises an encoder, the encoder is arranged on one side of the base, a first synchronous belt pulley is arranged at the joint of the upper part of the lead screw and the coupler, a second synchronous belt pulley is arranged at the shaft end of the encoder, and a rubber synchronous belt is connected between the first synchronous belt pulley and the second synchronous belt pulley; And a control circuit is connected between the signal output end of the encoder and the wiring terminal of the motor. Preferably, the control circuit comprises a programmable controller and a servo driver, the motor is a servo motor, the signal output end of the encoder is connected with the pulse quantity input end of the programmable controller, the pulse quantity output end of the programmable controller is connected with the pulse signal input end of the servo driver, the direction input end of the servo driver is connected with the switching value output end of the programmable controller, and the power output terminal of the servo driver is connected with the motor. Preferably, the control circuit comprises a programmable controller and a frequency converter, wherein the digital quantity output end of the programmable controller is connected with the digital quantity input end of the frequency converter, the signal output end of the encoder is connected with the pulse quantity input end of the programmable controller, and the power output terminal of the frequency converter is connected with the motor. Preferably, the first synchronous belt pulley is an L-shaped straight hole synchronous belt pulley, and the second synchronous belt pulley is an aluminum alloy synchronous belt pulley. Preferably, the encoder is a multi-turn absolute value encod