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CN-121988847-A - Plasma cutting machine for elbow processing

CN121988847ACN 121988847 ACN121988847 ACN 121988847ACN-121988847-A

Abstract

The invention relates to the technical field of pipe fitting processing equipment, and provides a plasma cutting machine for elbow processing, which comprises a frame, a sliding table, a cutting unit, a positioning rotating unit and a scraping unit, wherein the sliding table is arranged on the frame; the cutting unit and the scraping unit are connected to the sliding table in a lifting manner, the positioning rotating unit is arranged on the frame and used for clamping the positioning elbow and driving the elbow to rotate, the cutting unit is used for cutting the elbow to form a groove, the scraping unit is used for abutting against the inner wall of the elbow and scraping cut melt attached to the inner wall of the elbow. The technical problem that the inner wall is easy to remain molten matters when the existing plasma cutting machine is used for processing the elbow groove is solved, elbow processing precision is guaranteed, and follow-up manual cleaning procedures are reduced.

Inventors

  • QI JIANTAO
  • Qi Shuzheng
  • QI JIANHUI
  • CHEN CHAO
  • ZHANG SHUWANG
  • LIU SHEN
  • ZHENG CHAO
  • LIU CHUNLEI
  • YIN YANFENG
  • GUO WENQING

Assignees

  • 沧州浩泰管道装备制造有限公司

Dates

Publication Date
20260508
Application Date
20260311

Claims (10)

  1. 1. A plasma cutting machine for elbow processing, comprising: The device comprises a rack (1), wherein a sliding table (4) is connected to the rack (1) in a sliding manner; The cutting unit (5) is connected to the sliding table (4) in a lifting manner and is used for cutting the elbow (100) to form a groove; the positioning and rotating unit (3) is arranged on the frame (1), and the positioning and rotating unit (3) is used for clamping the positioning elbow (100) and driving the elbow (100) to rotate; and the scraping unit (6) is connected to the sliding table (4) in a lifting manner and is used for abutting against the inner wall of the elbow (100) to scrape the melt attached to the inner wall of the elbow (100).
  2. 2. A plasma cutting machine for elbow machining according to claim 1, characterized in that the scraping unit (6) comprises: The mounting plate (61) is connected to the sliding table (4) in a lifting manner; The scraping piece (62), the scraping piece (62) is arranged at the lower part of the mounting plate (61), the scraping piece (62) is provided with a scraping blade (621) which is horizontally arranged, and the scraping blade (621) can be close to and abutted against the inner wall of the elbow (100) under the sliding drive of the mounting plate (61) so as to scrape the melt attached to the inner wall of the elbow (100).
  3. 3. A bend processing plasma cutting machine according to claim 2, wherein the scraper (62) comprises: The mounting frame (622), the mounting frame (622) is arranged on the mounting plate (61), and the mounting frame (622) is provided with a first sliding groove (6221) extending horizontally; The scraper (623), one side of scraper (623) has first sand grip (6231) with first spout (6221) sliding fit, first sand grip (6231) can follow the extending direction of first spout (6221) slides, so that scraper (623) is unloaded from installing frame (622).
  4. 4. A plasma cutting machine for elbow machining according to claim 3, wherein a lifting driving member is provided above the mounting plate (61), a lifting end of the lifting driving member extends downward and is connected with a lifting block (63), the lifting block (63) can move downward and penetrate through the mounting plate (61), and the mounting frame (622) is connected with the lower end of the lifting block (63) in a swinging manner; the scraping piece (62) is provided with a scraping state and a plate changing state; When the scraping piece (62) is in a scraping state, the lower end of the lifting block (63) penetrates through the mounting plate (61), the mounting frame (622) can drive the scraping plate (623) to swing to a transverse direction, and the transverse direction means that the scraping blade (621) is parallel to a horizontal plane, so that the scraping blade (621) horizontally extends and is abutted against the inner wall of the elbow (100); When the scraping piece (62) is in a plate changing state, the installation frame (622) can drive the scraping plate (623) to swing to the vertical direction, wherein the vertical direction means that the extending direction of the scraping blade (621) is vertical to the horizontal plane, so that the scraping blade (621) extends vertically, the lifting block (63) drives the installation frame (622) to lift, and the melt attached to the scraping plate (623) can be abutted to the bottom surface of the installation plate (61) so as to block the scraping plate (623) to move upwards and enable the scraping plate (623) to slide downwards along the first sliding groove (6221).
  5. 5. The plasma cutting machine for elbow machining according to claim 4, wherein the swinging part of the mounting frame (622) is provided with a first torsion spring, and the first torsion spring is used for providing a force for swinging the mounting frame (622) to a plate-changing state; an abutting inclined surface (6222) is formed on the mounting frame (622), and when the mounting frame (622) is in a plate changing state, the abutting inclined surface (6222) is positioned at one side of the mounting frame (622) away from the elbow (100) and gradually away from the swinging position of the mounting frame (622) from top to bottom; the lower part of the mounting plate (61) is provided with a swinging telescopic piece (64), and the telescopic end of the swinging telescopic piece (64) is used for being abutted with the abutting inclined surface (6222) so as to push the mounting frame (622) to swing to a scraping state.
  6. 6. The plasma cutting machine for elbow machining according to claim 4, wherein the mounting frame (622) is connected with a blocking block (65) in a swinging manner, a second torsion spring is arranged at the swinging position of the blocking block (65), and the second torsion spring is used for providing a force for blocking the blocking block (65) below the first raised line (6231) to prevent the scraping plate (623) from sliding downwards when the mounting frame (622) is in a plate replacing state.
  7. 7. The plasma cutting machine for elbow machining according to claim 4, wherein a second chute (6223) is provided on an inner side wall of the first chute (6221), a clamping block (624) is slidably connected to the second chute (6223), a clamping elastic member (625) is provided between the second chute (6223) and the clamping block (624), and the clamping elastic member (625) is used for providing an elastic force for pushing the clamping block (624) into the first chute (6221); the first raised strips (6231) are provided with clamping grooves (6232) matched with the clamping blocks (624) in a clamping mode, the clamping blocks (624) are provided with guide-in surfaces (6241) which face the opening sides of the first sliding grooves (6221), the guide-in surfaces (6241) can push the clamping blocks (624) to slide and retract into the second sliding grooves (6223) under the pushing action of the first raised strips (6231), and the clamping blocks (624) can extend outwards under the action of the clamping elastic pieces (625) and are clamped in the clamping grooves (6232) so as to lock the scraping plate (623) on the mounting frame (622).
  8. 8. The plasma cutting machine for elbow machining according to claim 7, wherein a material supplementing bin (7) is further arranged above the mounting plate (61), a plurality of vertically arranged scraping plates (623) are arranged in the material supplementing bin (7), and the scraping plates (623) are arranged in a stacked manner; One side of the supplementing bin (7) far away from the lifting block (63) is provided with a pushing telescopic piece (8), and when the lifting block (63) moves into the supplementing bin (7), the pushing telescopic piece (8) is used for pushing the scraping plate (623) into the mounting frame (622).
  9. 9. A plasma cutting machine for elbow machining according to claim 1, wherein the positioning and rotating unit (3) comprises: The supporting seat (31) is arranged on the frame (1); The clamping mechanism is rotationally connected to one side of the supporting seat (31) facing the cutting unit (5), and is used for clamping the elbow (100) and driving the elbow (100) to rotate.
  10. 10. The plasma cutting machine for elbow machining according to claim 9, wherein the clamping mechanism comprises: The mounting frame (32), the said mounting frame (32) is connected to said supporting seat (31) rotatably; the clamping arms (33) are symmetrically arranged on the mounting frame (32) in a sliding mode, clamping portions (331) are arranged at one ends, far away from the mounting frame (32), of the clamping arms (33), and the clamping arms (33) can slide in opposite directions to enable the clamping portions (331) to clamp the elbow (100); The sliding driving piece (34) is arranged on the mounting frame (32), and the sliding driving piece (34) is used for driving the two clamping arms (33) to slide in opposite directions.

Description

Plasma cutting machine for elbow processing Technical Field The invention relates to the technical field of pipe fitting machining equipment, in particular to a plasma cutting machine for elbow machining. Background In the field of pipeline engineering and pipe fitting processing, an elbow is used as a key component for realizing pipeline steering, and a port of the elbow is usually required to be subjected to groove processing so as to meet the requirements of a subsequent welding process on connection precision and weld quality. At present, the plasma cutting technology has the advantages of high cutting efficiency, good cutting accuracy and wide applicable material range (such as carbon steel, stainless steel and the like), and becomes one of the main technical means for processing the elbow bevel. However, when the conventional plasma cutting machine cuts the bevel of the elbow, high-temperature molten metal (namely molten attachments) generated in the plasma arc cutting process is difficult to completely remove by natural falling or conventional blowing cleaning, and residues are easy to form on the inner wall of the port of the elbow. The residual problem can directly lead to the following adverse effects that firstly, the actual size and the groove form of an elbow port can be changed by residual molten attachments, the alignment accuracy during subsequent welding is affected, and then weld defects (such as incomplete welding, slag inclusion and the like) are caused, secondly, subsequent cleaning procedures such as manual polishing and the like are additionally added, so that the processing period is prolonged, the labor cost and the processing cost are also improved, thirdly, if the cleaning is incomplete, the residual attachments can fall off in the pipeline operation process, and the pipeline conveying medium (such as fluid and gas) is polluted, or the pipeline circulation performance is affected. Disclosure of Invention In order to overcome the defects, the embodiment of the invention provides a plasma cutting machine for elbow processing, which solves the technical problem that molten attachments generated in the plasma arc cutting process are easy to remain on the inner wall of an elbow port when the plasma cutting machine is adopted to cut a bevel of an elbow in the prior art. According to one aspect, at least one embodiment of the present invention provides a plasma cutting machine for elbow processing, comprising: the rack is connected with a sliding table in a sliding way; the cutting unit is connected to the sliding table in a lifting manner and is used for cutting the elbow to form a groove; the positioning rotating unit is arranged on the frame and used for clamping the positioning elbow and driving the elbow to rotate; And the scraping unit is connected to the sliding table in a lifting manner and is used for abutting against the inner wall of the elbow to scrape the melt attached to the inner wall of the elbow. For example, in a plasma cutting machine for elbow processing according to at least one embodiment of the present invention, a scraping unit includes: The mounting plate is connected to the sliding table in a lifting manner; the scraping piece is arranged at the lower part of the mounting plate and is provided with a scraping blade which is horizontally arranged, and the scraping blade can be driven by the sliding of the mounting plate to approach and abut against the inner wall of the elbow so as to scrape the melt attached to the inner wall of the elbow. For example, in a plasma cutting machine for elbow processing according to at least one embodiment of the present invention, a scraping member includes: The mounting frame is arranged on the mounting plate and provided with a first sliding groove extending horizontally; The scraping plate is provided with a first convex strip which is in sliding fit with the first sliding groove on one side, and the first convex strip can slide along the extending direction of the first sliding groove so that the scraping plate can be unloaded from the mounting frame. For example, in the plasma cutting machine for elbow processing provided by at least one embodiment of the present invention, a lifting driving member is arranged above a mounting plate, a lifting end of the lifting driving member extends downward and is connected with a lifting block, the lifting block can move downward and penetrate through the mounting plate, and a mounting frame is connected to the lower end of the lifting block in a swinging manner; the scraping piece is provided with a scraping state and a plate changing state; When the scraping piece is in a scraping state, the lower end of the lifting block penetrates through the mounting plate, and the mounting frame can drive the scraping plate to swing to the transverse direction, so that the scraping blade horizontally extends and is abutted against the inner wall of the elbow; When scraping the material piece and bei