Cylinder inner ring longitudinal seam welding device

Abstract

The utility model relates to the technical field of cylinder welding, and discloses a cylinder inner ring longitudinal seam welding device which comprises a guide rail support, a welding machine and a roller carrier, the guide rail support comprises a support and a guide rail on the support, the support and the roller carrier are arranged side by side and are matched in height, and the extending direction of the guide rail is parallel to the axis of a roller of the roller carrier. The welding machine is connected with the welding nozzle through a welding line, the roller frame is used for driving a barrel to be welded to rotate, the welding nozzle driving device can linearly move back and forth along the guide rail, and the welding nozzle is installed on the welding nozzle driving device in a lifting mode. The welding nozzle driving device is used for guiding the welding nozzle to enter the cylinder to be welded, the welding nozzle driving device is used for guiding the welding nozzle to move linearly, and the roller frame drives the cylinder to be welded to rotate. The technical problems that in the prior art, when the annular longitudinal seam is welded, the inner wall is welded through and weld beading is left due to the fact that the outer wall is welded manually and the wall thickness of the sleeve is large are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder welding, in particular to a semi-automatic welding device for annular longitudinal seams in a cylinder. Background Art

[0002] In the production process of boiler header desuperheater, the inner sleeve of the desuperheater is a key component. This component is generally produced by 8-12mm thick steel plate, and is made through multiple processes such as rolling, assembly, witnessing and longitudinal circumferential seam welding. In order to ensure the weld penetration, the current process first uses argon arc welding to lay the base, and then fills the cover by manual welding. There are still some problems with the process in the above-mentioned prior art. On the one hand, the inner sleeve has a thin wall thickness and uneven rolled grooves. During manual welding, the inner wall often has problems such as welding through and welding nodules. In addition, the inner diameter of the sleeve is small and it is difficult to clean after assembly, which wastes a lot of time in the subsequent processes. On the other hand, the welding of the inner wall of the cylinder involves limited space operations, which has low welding efficiency and safety hazards.

[0003] The utility model with patent application number CN202222706489.7 in the prior art discloses a cylinder circumferential seam welding device, including a circumferential seam welding machine body, a limit base, a driving block, a screw, a threaded cylinder, a carrier plate, a support seat, a driving wheel, and a supporting frame. The spacing between the driving wheels is adjusted according to the width of the cylinder. The support seat is moved to a suitable position and fixed by bolts to achieve the effect of adjusting the spacing between the driving wheels. Then the cylinder is placed on the driving wheel and clamped by the circumferential seam welding machine body. The driving wheel effectively carries the cylinder to prevent the cylinder from tilting when it is clamped by the circumferential seam welding machine body. This technical solution only involves the welding technology of the outer circumferential seam, and longitudinal seam welding cannot be performed.

[0004] The utility model with patent application number CN202020572745.6 in the prior art discloses a cylinder circumferential seam welding device, including a base, a rotary drive mechanism, a bracket and a clamping assembly, the rotary drive mechanism is arranged on the base, and a plurality of pairs of rollers arranged at intervals are arranged thereon, the cylinders to be welded are placed on the rollers in sequence, the bracket is vertically arranged on the base, the tail end of the clamping assembly is hinged on the bracket, and two pulleys are arranged oppositely at the bottom of the clamping assembly, and the two pulleys are rotatably placed on the sides of two adjacent cylinders. This technical solution only involves the welding of the outer annular seam, and it is impossible to weld the longitudinal seam or the inner annular seam, and the roller frame may produce a longitudinal offset during welding, resulting in the welding gun being unable to perform welding operations on the predetermined position. Utility Model Content

[0005] In order to mainly solve the technical problems of easy welding penetration, weld nodules, low welding efficiency and potential safety hazards in the existing cylinder welding technology, the utility model proposes a cylinder inner annular longitudinal seam welding device.

[0006] The inner ring longitudinal seam welding device of the cylinder comprises a guide rail bracket, a welding machine and a roller frame. The guide rail bracket comprises a bracket and a guide rail on the bracket. The bracket and the roller frame are arranged side by side and their heights are matched to each other. The extension direction of the guide rail is parallel to the roller axis of the roller frame. The welding machine is connected to the welding nozzle through a welding line. The roller frame is used to drive the cylinder to be welded to rotate. The welding nozzle driving device also includes a welding nozzle driving device. The welding nozzle driving device can reciprocate in a straight line along the guide rail. The welding nozzle can be installed on the welding nozzle driving device in a liftable manner.

[0007] The welding nozzle driving device in the above-mentioned cylinder inner ring longitudinal seam welding device also includes a welding nozzle clamping rod, a guide rod, a base, and a platform. The welding nozzle driving device is a movable structure with rollers. The platform can be raised and lowered relative to the base. The welding nozzle clamping rod is fixed on the platform. The welding nozzle is fixedly installed on the welding nozzle clamping rod. The guide rod is arranged on the left and right of the longitudinal weld on the cylinder to be welded to limit the movement of the welding nozzle along the longitudinal weld.

[0008] The roller frame is also provided with a fixing rod to prevent the cylinder to be welded from axial movement.

[0009] The beneficial effects of the utility model include: by fixing the welding nozzle on a welding nozzle driving device driven by a motor and extending it into the cylinder to weld the inner annular seam and the inner longitudinal seam, the difficulty of welding the root of the annular longitudinal seam of the inner sleeve of the cooler is reduced, the welding efficiency of the inner sleeve of the cooler is improved, and the technical problems of manual welding of the outer wall of the annular longitudinal seam and the inner wall welding penetration and residual weld nodules caused by the thin wall thickness of the inner sleeve are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of one implementation mode of the cylinder inner ring longitudinal seam welding device of the utility model.

[0011] Figure 2 It is a structural schematic diagram of the cylinder inner ring longitudinal seam welding device of the utility model when the roller frame is placed with the cylinder to be welded.

[0012] Markings in the figure are: 1-guide rail bracket, 11-guide rail, 2-welding machine, 21-welding line, 22-welding nozzle, 3-roller frame, 31-fixing rod, 4-welding nozzle driving device, 41-welding nozzle clamping rod, 42-guide rod, 43-base, 44-platform. DETAILED DESCRIPTION

[0013] The utility model is described below in conjunction with the accompanying drawings.

[0014] like Figure 1As shown, the utility model cylinder inner ring longitudinal seam welding device comprises a guide rail bracket 1, a welding machine 2, and a roller frame 3. The guide rail bracket 1 comprises a bracket and a guide rail 11 on the bracket. The bracket and the roller frame 3 are arranged side by side and are highly matched with each other. The extension direction of the guide rail 11 is parallel to the roller axis of the roller frame 3. The welding machine 2 is connected with the welding nozzle 22 through a welding line 21. The roller frame 3 is used to drive the cylinder to be welded to rotate. It also includes a welding nozzle driving device 4. The welding nozzle driving device 4 can reciprocate in a straight line along the guide rail 11. The welding nozzle 22 can be installed on the welding nozzle driving device in a liftable manner, and is guided by the welding nozzle driving device 4 to the inside of the cylinder to be welded on the roller frame 3 for welding. The roller frame 3 drives the cylinder to be welded to rotate to perform inner ring seam welding, and the welding nozzle driving device 4 guides the welding nozzle 22 to move linearly to perform inner longitudinal seam welding.

[0015] Further, such as Figure 1-2 As shown, the welding nozzle driving device also includes a welding nozzle clamping rod 41, a guide rod 42, a base 43, and a platform 44. The welding nozzle driving device 4 is a movable structure with rollers. The platform 44 can be raised and lowered relative to the base 43 to adapt to different sizes of cylinders to be welded. The welding nozzle clamping rod 41 is fixed on the platform 44, and the welding nozzle 22 is fixedly installed on the welding nozzle clamping rod 41. The guide rod 42 is arranged on the left and right of the longitudinal weld on the cylinder to be welded to limit the movement of the welding nozzle 22 along the longitudinal weld, so that the welding nozzle 22 can accurately perform inner longitudinal seam welding along a straight line.

[0016] Furthermore, a fixing rod 31 is also provided on the roller frame 3. While the roller of the roller frame 3 maintains a horizontal contact surface with the cylinder to be welded, the roller itself is arranged to be inclined in one direction, so as to control the cylinder to be welded to move in only one direction during operation. The fixing rod 31 is arranged in the direction of the movement of the cylinder to be welded, so as to prevent the cylinder to be welded from shifting along the tilting direction of the roller during welding.

[0017] When the utility model is put into use, the cylinder to be welded is first placed on the roller frame 3, and the welding nozzle driving device 4 performs linear motion on the guide rail 11 on the guide rail bracket 1, and at the same time, under the limitation of the guide rod 42, the welding nozzle driving device 4 drives the welding line 21 and the welding nozzle 22 to perform inner longitudinal seam welding on the cylinder to be welded. At the same time, according to the size of the cylinder to be welded, the longitudinal height of the welding line 21 and the welding nozzle 22 can be adjusted by the base 43 and the platform 44 on the welding nozzle driving device 4, and the roller frame 3 can drive the cylinder to be welded to rotate. At this time, the positions of the welding line 21 and the welding nozzle 22 remain unchanged, and the inner annular seam welding of the cylinder to be welded is completed through this operation. The roller of the above-mentioned roller frame 3 keeps the contact surface with the cylinder to be welded horizontal, and the roller itself is set to tilt in one direction, so that the cylinder to be welded is controlled to move in only one direction during operation. The above-mentioned fixing rod 31 is set in the direction of the movement of the cylinder to be welded, and a relatively simple structure is used to limit the offset direction of the cylinder to be welded during welding and fix it.

[0018] Compared with the prior art, the inner ring longitudinal seam welding device proposed in the utility model has the following advantages: by providing a welding nozzle driving device to guide the welding line and the welding nozzle to extend into the interior of the cylinder to be welded, and by using a motor to linearly drive it and a roller frame to drive the cylinder to be welded to rotate, the device can more conveniently realize the welding operation of the inner ring longitudinal seam, reduce the welding difficulty of the root of the inner ring longitudinal seam of the cooler inner sleeve, improve the welding efficiency of the inner sleeve of the cooler, and solve the technical problems of manual welding of the outer wall of the ring longitudinal seam and welding penetration and residual weld nodules of the inner wall caused by the thin wall thickness of the inner sleeve.

Claims

1. A device for welding a longitudinal seam of a cylinder body, comprising a guide rail bracket (1), a welding machine (2), and a roller frame (3), wherein the guide rail bracket (1) comprises a bracket and a guide rail (11) on the bracket, the bracket and the roller frame (3) are arranged side by side and their heights are matched to each other, the extension direction of the guide rail (11) is parallel to the roller axis of the roller frame (3), the welding machine (2) is connected to a welding nozzle (22) via a welding line (21), and the roller frame (3) is used to drive the cylinder to be welded to rotate, and is characterized in that: It also comprises a welding nozzle driving device (4), wherein the welding nozzle driving device (4) can move back and forth in a straight line along the guide rail (11), and the welding nozzle (22) can be installed on the welding nozzle driving device (4) in a liftable manner.

2. The device for welding longitudinal seams in a cylinder body according to claim 1, characterized in that: The welding nozzle driving device (4) further comprises a welding nozzle clamping rod (41), a guide rod (42), a base (43), and a platform (44); the welding nozzle driving device (4) is a movable structure with rollers; the platform (44) can be raised and lowered relative to the base (43); the welding nozzle clamping rod (41) is fixed on the platform (44); the welding nozzle (22) is fixedly mounted on the welding nozzle clamping rod (41); and the guide rod (42) is arranged on the left and right of the longitudinal weld on the cylinder to be welded to limit the movement of the welding nozzle (22) along the longitudinal weld.

3. The device for welding longitudinal seams in inner ring of a cylinder according to claim 1, characterized in that: The roller frame (3) is also provided with a fixing rod (31) for preventing the cylinder to be welded from axially moving.

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