Rapid arc cutting device for metal pipe fitting

Abstract

The utility model provides a metal pipe fitting fast arc cutting device which comprises an operation table, a driving motor, a speed reducer, a swing type arc cutting assembly and a pipe fitting positioning support, the driving motor and the speed reducer are arranged at the bottom of the operation table, the swing type arc cutting assembly is arranged on the upper surface of the operation table, and the swing type arc cutting assembly comprises a deflector rod seat, a deflector rod, a swing rod and an arc cutting die. The shifting rod seat is coaxially and vertically connected with the speed reducer, a horizontal shifting rod is arranged on the side wall of the shifting rod seat, one end of the swing rod is in linkage with the shifting rod, the other end of the swing rod is connected with the arc cutting die, the middle of the swing rod is hinged to a die installation seat on the operation table, the pipe fitting positioning support is fixedly installed on the upper surface of the operation table, and the arc cutting die extends into the end of a pipe fitting. The swing rod swings left and right to drive the arc cutting die to swing left and right, and arc cutting is conducted on the side wall of the end of the pipe from the interior. The pipe end arc cutting device can achieve semi-automatic pipe end arc cutting machining and is high in efficiency, good in stability, not prone to deformation of pipes and high in product quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal pipe processing, in particular to a metal pipe fast arc cutting device. Background Art

[0002] Currently, ladders used in construction scaffolding are typically welded together from round tubes. Long round tubes serve as vertical tubes on either side, while several short, cut round tubes serve as horizontal tubes in the middle. Several horizontal tubes are welded between the vertical tubes on either side to form the ladder. Because both the horizontal and vertical tubes are round tubes, the tube ends of the horizontal tubes need to be arc-cut before welding, creating curved notches for docking. Existing processing equipment typically uses a punch press. After arc-cutting one end of the tube, the arc-cut end cannot be properly positioned when the other end is arc-cut. This can easily cause deformation of the arc due to excessive force, hindering processing efficiency and product performance. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a metal pipe fast arc cutting device, which can quickly process arc openings at both ends of a round pipe, has high processing efficiency and better product quality.

[0004] The utility model solves the technical problem by the following technical solutions:

[0005] A quick arc cutting device for metal pipe fittings, characterized in that it includes an operating table, a drive motor, a reducer, a swinging arc cutting assembly and a pipe fitting positioning support, the driving motor and the reducer are arranged at the bottom of the operating table, and the swinging arc cutting assembly is arranged on the upper surface of the operating table, the swinging arc cutting assembly includes a lever seat, a lever, a swinging lever and an arc cutting mold, the lever seat is coaxially and vertically connected to the reducer, and a horizontal lever is made on the side wall of the lever seat, one end of the swinging lever moves the lever, and the other end of the swinging lever is connected to the arc cutting mold, the middle part of the swinging lever is hinged on the mold mounting seat on the operating table, the pipe fitting positioning support is fixedly installed on the upper surface of the operating table, the arc cutting mold extends into the end of the pipe fitting, and the swinging lever swings left and right to drive the arc cutting mold to swing left and right, thereby cutting the arc of the end side wall of the pipe fitting from the inside.

[0006] Moreover, position sensors are symmetrically arranged on both sides of the shift lever seat on the operating table. The shift lever seat drives the shift lever to rotate a certain angle and contact the position sensor. The position sensor is connected to the electric control cabinet, and the electric control cabinet is connected to the reducer control to control the forward and reverse rotation of the reducer, drive the shift lever seat to rotate forward and reverse, and then drive the shift lever to move back and forth.

[0007] Moreover, a tension spring is symmetrically installed on the upper part of the end of the swing rod that contacts the shift rod. The tension spring is connected and installed with a symmetrical tensioning seat to pull the swing rod back to the middle position.

[0008] Moreover, the arc cutting mold includes an arc cutting inner mold and an arc cutting outer mold. The surface of the arc cutting inner mold is provided with a circular cutting table, and arc-shaped cutting edges are symmetrically provided on both sides of the cutting table. The cutting table is embedded in the end of the inner hole made by the arc cutting outer mold. A circular gap consistent with the wall thickness of the pipe is left between the cutting table and the inner hole of the arc cutting outer mold. A semicircular through groove is provided at the end of the cutting outer mold along the radial direction of the inner hole for waste discharge.

[0009] Moreover, a pipe pressing seat is slidably mounted on the outside of the pipe positioning support of the operating table, and a pressing surface of the pipe pressing seat is provided with a flexible pressing portion that limits the arc cutting of the pipe.

[0010] The advantages and beneficial effects of the utility model are:

[0011] 1. The utility model discloses a rapid arc cutting device for metal pipes, which adopts a swinging arc cutting assembly. The pipe is placed horizontally, and the pipe end is arc cut. The other side is still in the horizontal processing. The swinging arc cutting assembly performs arc cutting from the inside of the pipe end to the outside. The pipe is not subjected to external stamping force in the axial direction, thereby avoiding deformation of the pipe end, thereby improving the arc cutting quality of the pipe, and further improving the overall quality of the product after the pipe is welded.

[0012] 2. The metal pipe fast arc cutting device of the utility model adopts a lever seat to drive the lever to move back and forth, drive the swing rod, and the swing rod drives the arc cutting mold, and finally realizes the arc cutting processing of the pipe end, which has the advantages of high efficiency, time saving and labor saving.

[0013] 3. In the metal pipe quick arc cutting device of the present invention, a tension spring is symmetrically installed on the upper part of the end where the swing rod contacts the shift rod. The tension spring is connected and installed with a symmetrical tensioning seat to pull the swing rod back to the middle position. The swing rod automatically returns to its original position under the action of the tension spring, allowing the metal pipe to be positioned and installed in the annular gap between the arc cutting inner mold and the arc cutting outer mold, thereby improving the stability of the swing rod and the left and right swinging action, thereby improving the arc cutting effect.

[0014] 4. The utility model provides a rapid arc cutting device for metal pipe fittings. The arc cutting mold includes an arc cutting inner mold and an arc cutting outer mold. The annular gap between the arc cutting outer mold and the arc cutting inner mold is used to position the pipe wall at the end of the pipe fitting. The cutting table inside the arc cutting is embedded in the interior of the pipe fitting end, thereby performing arc cutting processing from the inside outward. The arc cutting outer mold is provided with a semicircular groove along the radial direction of the inner hole for waste discharge. The arc cutting process is highly stable and deformation of the pipe fitting is avoided.

[0015] 5. In the metal pipe quick arc cutting device of the present invention, a pipe pressing seat is slidably installed on the outside of the pipe positioning support of the operating table. The pressing surface of the pipe pressing seat is provided with a flexible pressing portion that limits the arc cutting of the pipe. The flexible pressing portion can be a pressing portion that can limit the rear end of the arc cutting, thereby limiting the pipe after processing at one end, and facilitating the arc cutting processing at the other end.

[0016] 6. The structural design of the utility model is scientific and reasonable, and can realize semi-automatic arc cutting processing of pipe ends, with high efficiency, good stability, and pipes are not easy to deform, and the product quality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a pipe welding product of the present utility model;

[0018] Figure 2 This is a schematic structural diagram of a metal pipe with an arc opening according to the present invention;

[0019] Figure 3 This is a front view of the metal pipe quick arc cutting device of the present utility model;

[0020] Figure 4 for Figure 3 A top view of

[0021] Figure 5 Schematic diagram of the arc cutting die of the present invention;

[0022] Figure 6 for Figure 5 AA section view.

[0023] Figure 7 for Figure 5 Right view of .

[0024] Description of reference numerals:

[0025] 1-vertical pipe, 2-arc notch, 3-horizontal pipe, 4-operating table, 5-reducer, 6-shift lever seat, 7-swing lever, 8-tensioning seat, 9-arc cutting mold, 10-mold mounting seat, 11-pipe positioning support, 12-pipe top pressure seat, 13-belt transmission mechanism, 14-drive motor, 15-position sensor, 16-shift lever, 17-tension spring, 18-pin, 19-arc cutting inner mold, 20-cutting table, 21-arc cutting outer mold, 22-inner hole, 23-semicircular through groove, 24-circular ring gap, 25-arc cutting edge. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely illustrative and non-restrictive, and should not be used to limit the scope of protection of the present invention.

[0027] A metal pipe fast arc cutting device, such as Figure 1As shown, it is used to make an arc-shaped notch 2 in the end of the vertical pipe 1 and the horizontal pipe 3 of the welding ladder. The arc cutting device includes an operating table 4, a drive motor 14, a reducer 5, a swing-type arc cutting assembly and a pipe positioning bracket 11. The operating table includes a table top and a bracket. The drive motor is fixedly installed on the bottom bracket of the operating table, and the drive motor drives the reducer installed on the bottom surface of the operating table through a belt transmission mechanism 13. A swing-type arc cutting assembly is set on the upper surface of the operating table, and the swing-type arc cutting assembly includes a lever seat 6, a lever 16, a swing rod 7 and an arc cutting mold 9. The lever seat is cylindrical, and the lever seat is coaxially connected to the reducer vertically. A horizontal lever is formed on the side wall of the lever seat. One end of the swing rod toggles the lever and is linked with the lever. The other end of the swing rod is connected to the arc cutting mold. The middle part of the swing rod is hinged to the mold mounting seat 10 on the operating table through a pin 18.

[0028] Position sensors 15 are symmetrically mounted on either side of the lever base on the operating table. The lever base drives the lever to rotate a certain angle to contact the position sensor. The position sensor is connected to a relay in the control cabinet, which is in turn connected to a reducer. The reducer uses a cycloid reducer, which controls the reducer's forward and reverse rotation, driving the lever base to rotate forward and reverse, which in turn drives the lever to move back and forth. One reciprocating motion can cut two arcs on one end.

[0029] A tension spring 17 is symmetrically mounted on the upper portion of the swing lever's contact end with the shift lever. This tension spring is connected to a symmetrical tensioning seat 8, pulling the swing lever back to its neutral position. The swing lever automatically returns to its original position under the action of the tension spring, improving the stability of the swing lever and the left and right swinging motion, thereby enhancing the arc cutting effect.

[0030] The arc cutting die includes an inner arc cutting die 19 and an outer arc cutting die 21. The surface of the inner arc cutting die is made of a circular cutting table 20, and arc-shaped cutting edges 25 are symmetrically arranged on both sides of the cutting table. The cutting table is embedded in the end of the inner hole 22 made by the outer arc cutting die. A circular annular gap 24 is left between the cutting table and the inner hole of the outer arc cutting die, which is consistent with the wall thickness of the pipe. The end of the outer arc cutting die is made with a semicircular groove along the radial direction of the inner hole for waste discharge. The cutting table inside the arc cutting die is embedded in the interior of the pipe end, so that the arc cutting process is carried out from the inside out. The outer arc cutting die is made with a semicircular groove 23 along the radial direction of the inner hole for waste discharge. The arc cutting process is highly stable and prevents deformation of the pipe.

[0031] The pipe positioning support is fixedly installed on the surface of the operating table, the arc cutting die is extended to the end of the pipe, and the swing rod swings left and right to drive the arc cutting die to swing left and right, cutting the end side wall of the pipe from the inside.

[0032] A pipe pressing seat 12 is slidably mounted on the exterior of the pipe positioning support of the operating table. The pipe pressing seat is L-shaped, with its horizontal bottom surface slidably mounted on the operating table via a guide rail. The vertical surface of the pipe pressing seat is the pressing surface, and the pressing surface of the pipe pressing seat is provided with a flexible pressing portion that limits the position of the curved notch of the pipe. The flexible pressing portion can be a pressing portion that can limit the position of the end portion after arc cutting, thereby limiting the position of the pipe after processing at one end and facilitating arc cutting at the other end.

[0033] The working process of the metal pipe rapid arc cutting device is as follows:

[0034] Start the driving motor, which drives the reducer to rotate through the belt transmission mechanism, and the reducer drives the lever seat to rotate. The lever on the lever seat shifts the tail of the swing lever during the rotation process, and the front end of the swing lever drives the arc cutting inner die to swing left and right. During processing, when the swing lever is in the middle position, the pipe fitting is inserted into the annular gap between the arc cutting outer die and the arc cutting inner die. At this time, the cutting table of the arc cutting inner die is located inside the end of the pipe fitting. During the swinging process of the swing lever, the left and right sides of the pipe fitting end are cut, that is, an arc-shaped concave surface is cut to facilitate welding, such as Figure 2 After processing one end, the pipe is removed, turned around, and the other end is processed. This allows for rapid arc-shaped cuts on both ends of the metal pipe, improving processing efficiency and quality.

[0035] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A metal pipe rapid arc cutting device, characterized by: The invention comprises an operating table (4), a driving motor (14), a speed reducer (5), a swinging arc cutting assembly and a pipe positioning support (11). The driving motor (14) and the speed reducer (5) are arranged at the bottom of the operating table (4). The swinging arc cutting assembly is arranged on the upper surface of the operating table (4). The swinging arc cutting assembly comprises a lever seat (6), a lever (16), a swinging rod (7) and an arc cutting mold (9). The lever seat (6) is coaxially and vertically connected to the speed reducer (5). The side wall of the lever seat (6) is provided with a horizontal The lever (16) is driven by one end of the swing lever (7), and the other end of the swing lever (7) is connected to the arc cutting die (9). The middle part of the swing lever (7) is hinged on the die mounting seat (10) on the operating table (4). The pipe positioning support (11) is fixedly mounted on the upper surface of the operating table (4). The arc cutting die (9) extends into the end of the pipe. The swing lever (7) swings left and right to drive the arc cutting die (9) to swing left and right, thereby cutting the end side wall of the pipe from the inside.

2. The metal pipe rapid arc cutting device according to claim 1, characterized in that: Position sensors (15) are symmetrically arranged on both sides of the lever seat (6) on the operating table (4). The lever seat (6) drives the lever (16) to rotate a certain angle to contact the position sensor (15). The position sensor (15) is connected to the electric control cabinet. The electric control cabinet is connected to the reducer control to control the reducer to rotate forward and reverse, drive the lever seat (6) to rotate forward and reverse, and then drive the lever (16) to move back and forth.

3. The metal pipe rapid arc cutting device according to claim 1, characterized in that: A tension spring (17) is symmetrically installed on the upper part of the end of the swing rod (7) that contacts the shift rod (16). The tension spring (17) is connected and installed with a symmetrical tension seat (8) to pull the swing rod (7) back to the middle position.

4. The metal pipe rapid arc cutting device according to claim 1, characterized in that: The arc cutting die (9) comprises an arc cutting inner die (19) and an arc cutting outer die (21). The surface of the arc cutting inner die (19) is provided with a circular cutting platform (20). Arc-shaped cutting edges (25) are symmetrically provided on both sides of the cutting platform (20). The cutting platform (20) is embedded in the end of the inner hole (22) formed by the arc cutting outer die (21). A circular gap (24) consistent with the wall thickness of the pipe is left between the cutting platform (20) and the inner hole (22) of the arc cutting outer die (21). A semicircular through groove (23) is provided at the end of the cutting outer die along the radial direction of the inner hole (22) for waste discharge.

5. The metal pipe rapid arc cutting device according to claim 1, characterized in that: A pipe pressing seat (12) is slidably mounted on the outside of the pipe positioning support (11) of the operating table (4), and a flexible pressing portion for limiting the arc cutting of the pipe is provided on the pressing surface of the pipe pressing seat (12).

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