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CN-121292800-B - Quartz glass tube stretching device and clamping control method

CN121292800BCN 121292800 BCN121292800 BCN 121292800BCN-121292800-B

Abstract

The invention discloses a quartz glass tube stretching device and a clamping control method, which relate to the technical field of quartz glass manufacture and comprise a linear module assembly, wherein the linear module assembly is provided with two groups of linear modules which are symmetrically arranged and extend along a first direction, the clamping assembly comprises clamping mechanisms which are respectively connected with the two groups of linear modules in a transmission mode, the clamping mechanisms are provided with clamping parts for clamping a quartz glass tube, the clamping centers of the clamping parts are coplanar with the axis of the quartz glass tube, the driving assembly is used for respectively driving the two groups of linear modules to respectively mobilize the clamping mechanisms to move, the control module is electrically connected with the driving mechanism and the clamping mechanisms and is used for controlling the two groups of the clamping mechanisms to alternately clamp the quartz glass tube, the linear motion of the linear modules replaces the traditional roller type rotary motion, the accurate synchronous speed control requirement between rollers is avoided, the two groups of the clamping mechanisms alternately act on the quartz glass tube, the quartz glass tube can be prevented from radial deflection, and the precision of the quartz glass tube in the stretching process is improved.

Inventors

  • SHAO MINGQIANG
  • XUE ZHIGANG
  • WANG JIAHE
  • AN CHENG
  • WANG WENYU
  • ZHANG SHENGCHAO

Assignees

  • 久智光电子材料科技有限公司

Dates

Publication Date
20260512
Application Date
20251215

Claims (7)

  1. 1. A quartz glass tube drawing apparatus, comprising: The linear module assembly comprises two groups of linear modules (1) which are symmetrically arranged and extend along a first direction, wherein a first limit sensor (11) and a second limit sensor (12) are arranged on the linear modules (1); The clamping assembly comprises two groups of clamping mechanisms (2) which are respectively connected with the two groups of linear modules (1) in a transmission way, the clamping mechanisms (2) are provided with clamping parts for clamping the quartz glass tube (13), and the clamping centers of the clamping parts and the axis of the quartz glass tube (13) are coplanar; the clamping mechanism (2) comprises: the first support frame (4) is in transmission connection with the linear module (1); The telescopic piece (5) is arranged on the first supporting frame (4) and provided with a telescopic end which moves reciprocally along a second direction, and the second direction is perpendicular to the first direction; The second supporting frame (6), the said second supporting frame (6) is set up in the said telescopic end; The clamping piece (7), the clamping piece (7) is arranged on the side wall of the second supporting frame (6), and the clamping piece (7) is provided with the clamping part; The clamping part comprises two clamping fingers (8) which relatively move along a third direction, wherein the two clamping fingers (8) are symmetrically arranged about the clamping center, and when the quartz glass tube (13) is clamped by the clamping part, the two clamping fingers (8) simultaneously move in opposite directions; The driving assembly comprises two groups of driving mechanisms (3) which are respectively connected with the two groups of linear modules (1) in a transmission way, and the driving mechanisms (3) are used for driving the linear modules (1) to drive the clamping mechanisms (2) to reciprocate along the first direction; The control module is electrically connected with the driving mechanism (3) and the clamping mechanism (2), and controls the clamping mechanism (2) located at the first limit sensor (11) to move downwards until the clamping mechanism is in the same direction and the same speed as the quartz glass tube (13) and clamps the quartz glass tube (13), meanwhile, the clamping mechanism (2) located at the second limit sensor (12) is moved upwards until reaching the first limit sensor (11), and when the clamping mechanism (2) moving downwards reaches the second limit sensor (12), the clamping mechanism (2) located at the first limit sensor (11) is moved downwards until the clamping mechanism is in the same direction and the same speed as the quartz glass tube (13) and clamps the quartz glass tube (13).
  2. 2. A quartz glass tube drawing device according to claim 1, characterized in that the drive mechanism (3) comprises: the driving piece (9) is provided with a driving end, and the driving end is in transmission connection with the linear module (1); And the controller (10) is electrically connected with the driving piece (9) and the control module.
  3. 3. A quartz glass tube drawing device according to claim 2, characterized in that the first limit sensor (11) is located close to the driving member (9) relative to the second limit sensor (12).
  4. 4. A quartz glass tube stretching apparatus as in claim 3, wherein the linear module (1) comprises: A first mount extending in the first direction; the first limit sensor (11) and the second limit sensor (12) are arranged on the first mounting frame; The screw rod is rotatably arranged in the first mounting frame and is in transmission connection with the driving end; The sliding block is in threaded sleeve connection with the screw rod, the sliding block is in sliding fit with the first installation frame, and the first support frame (4) is arranged on the sliding block.
  5. 5. A quartz glass tube stretching apparatus as in claim 4, wherein the linear module (1) comprises: A second mount extending in the first direction; the first limit sensor (11) and the second limit sensor (12) are arranged on the second mounting frame; The driving wheel is rotatably arranged at one end, close to the driving piece (9), of the second mounting frame and is in transmission connection with the driving end; the driven wheel is rotatably arranged at one end of the second mounting frame far away from the driving piece (9); the conveying belt, the driving wheel and the driven wheel are in transmission connection, and the first supporting frame (4) is connected to the conveying belt.
  6. 6. Clamping control method, realized on the basis of a quartz glass tube drawing device according to any of claims 1-5, characterized in that it comprises the following steps: S01, before clamping, the control module controls the two groups of clamping mechanisms (2) to be respectively positioned on a first limit sensor (11) and a second limit sensor (12); S02, after clamping starts, the control module controls the clamping mechanism (2) positioned on the first limit sensor (11) to move downwards until the clamping mechanism moves at the same speed as the quartz glass tube (13) and enables the clamping mechanism (2) to clamp the quartz glass tube (13), and simultaneously controls the clamping mechanism (2) positioned on the second limit sensor (12) to move upwards until the clamping mechanism reaches the first limit sensor (11); s03, the control module detects that the clamping mechanism (2) clamping the quartz glass tube (13) reaches the second limit sensor (12), and controls the clamping mechanism (2) positioned on the first limit sensor (11) to move downwards until the clamping mechanism moves at the same speed as the quartz glass tube (13) and clamps the quartz glass tube (13); S04, the control module controls the clamping mechanism (2) reaching the second limit sensor (12) to release the clamping of the quartz glass tube (13) and controls the quartz glass tube to move upwards until reaching the first limit sensor (11); S05, repeating the steps S03-S04 until the quartz glass tube (13) is produced.
  7. 7. A clamping control method according to claim 6, characterized in that the upward movement speed of the clamping mechanism (2) is greater than the blanking speed of the quartz glass tube (13).

Description

Quartz glass tube stretching device and clamping control method Technical Field The invention relates to the technical field of quartz glass manufacturing, in particular to a quartz glass tube stretching device and a clamping control method. Background The existing quartz glass tube stretching device mainly comprises a pair or a plurality of pairs of rollers, rubber bushings are usually arranged on the rollers to play a role in heat insulation, friction force increase and quartz glass scratch reduction, a stretching mechanism is usually fixedly arranged below a furnace discharge hole, and the rollers are driven by a servo motor connected with a controller to synchronously rotate in opposite directions, so that the quartz glass tube stretching device can be formed. When the quartz glass tube does not reach the corresponding roller position, the rollers are in a left-right separation state, and when the glass tube is required to be clamped and stretched, the left-right rollers are closed towards the clamping center, and the separation and the closing are usually driven by a cylinder driving connecting rod to drive the rollers to move. When the roller type stretching device stretches the glass tube, the left roller and the right roller are required to be contacted with the glass tube simultaneously to synchronously rotate. Because of the processing error of the roller and the rubber bushing, or because of the uniformity difference of materials of flexible materials of the rubber bushing, when the flexible materials are contacted with the glass tube, the overall outer diameter of the roller is error, so that the difference of the rotating linear speeds of the left roller and the right roller is caused, the radial deflection of the glass tube is further caused when the glass tube is stretched, and the glass tube is bent and other defects are caused. Disclosure of Invention In view of the above-described drawbacks or shortcomings of the related art, it is desirable to provide a quartz glass tube stretching apparatus and a clamping control method. In a first aspect, the present invention provides a quartz glass tube drawing apparatus comprising: The linear module assembly comprises two groups of linear modules which are symmetrically arranged and extend along a first direction; The clamping assembly comprises two groups of clamping mechanisms which are respectively connected with the two groups of linear modules in a transmission way, the clamping mechanisms are provided with clamping parts for clamping the quartz glass tube, and the clamping centers of the clamping parts and the axis of the quartz glass tube are coplanar; The driving assembly comprises two groups of driving mechanisms which are respectively connected with the two groups of linear modules in a transmission way, and the driving mechanisms are used for driving the linear modules to drive the clamping mechanisms to reciprocate along the first direction; and the control module is electrically connected with the driving mechanism and the clamping mechanism and used for controlling the two groups of clamping mechanisms to alternately clamp the quartz glass tube. According to the technical scheme provided by the invention, the clamping mechanism comprises: the first support frame is in transmission connection with the linear module; The telescopic piece is arranged on the first supporting frame and provided with a telescopic end which moves back and forth along a second direction, and the second direction is perpendicular to the first direction; The second support frame is arranged at the telescopic end; the clamping piece is arranged on the side wall of the second supporting frame and is provided with the clamping part. According to the technical scheme, the clamping part comprises two clamping fingers which relatively move along a third direction, wherein the third direction is perpendicular to the first direction and perpendicular to the second direction. According to the technical scheme provided by the invention, the driving mechanism comprises: The driving piece is provided with a driving end, and the driving end is in transmission connection with the linear module; and the controller is electrically connected with the driving piece and the control module. According to the technical scheme provided by the invention, the linear module is provided with the first limit sensor and the second limit sensor, and the first limit sensor is close to the driving piece relative to the second limit sensor. According to the technical scheme provided by the invention, the linear module comprises: A first mount extending in the first direction; the first limit sensor and the second limit sensor are arranged on the first mounting frame; The screw rod is rotatably arranged in the first mounting frame and is in transmission connection with the driving end; The sliding block is in threaded sleeve connection with the screw rod, the sliding block is in sliding fit with