Tube plate positioning and welding device

Abstract

The utility model discloses a tube plate positioning and welding device which comprises a tube fixing conical block, a welding gun, a centering conical block, a large-diameter gear ring, an arc-shaped plate, a first air cylinder, a second air cylinder, a third air cylinder, a strip-shaped frame and a screw rod. According to the utility model, the distance between the central axis of the tube fixing conical block and the central axis of the centering conical block which can be adjusted by moving up and down is equal to the distance between the circle centers of two adjacent round holes in the tube plate, so that model positioning can be formed at one end of the tube body in the round holes in the tube plate; a pipe body to be welded and a round hole in the pipe plate are in a concentric state, the problem that the pipe body to be welded is inconvenient and inaccurate to position is solved, the accuracy of the welding position of the pipe body is guaranteed, meanwhile, the welding gun with the central axis of the pipe fixing conical block as the rotating point is arranged, the function of annularly moving and welding the annular welding portion on the pipe plate is achieved, and the welding efficiency is improved. And welding reversing movement is stable, and welding is more uniform.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field, concretely a kind of tube plate positioning welding device. BACKGROUND

[0002] The positioning control displacement between each round hole on tube plate and one end of the pipe body to be welded is small, so that the existing tube plate positioning welding device has great difficulty in positioning the pipe body to be welded, cannot implement low-cost, high-precision welding positioning by the characteristics that the center distance between each round hole on the tube plate is the same, and the welding gun is unstable, the welding is not uniform, and the welding quality is poor. Therefore, a tube plate positioning welding device is proposed to solve the above problems. SUMMARY

[0003] The utility model discantly provides a kind of tube plate positioning welding device to solve the above problems.

[0004] The utility model discantly provides a kind of tube plate positioning welding device to solve the above problems.The utility model discantly provides a kind of tube plate positioning welding device, including fixed pipe cone block, welding torch, centering cone block, large diameter gear ring, arc plate, first air cylinder, second air cylinder, third air cylinder, strip frame and screw rod, the fixed pipe cone block with the centering cone block is on same vertical surface, and the large diameter end of fixed pipe cone block is fixedly connected with the front bottom of slide of the strip frame, the output end of welding torch is the rotation point of the central axis of fixed pipe cone block, and the back of welding torch is connected with the output end of first air cylinder through second short plate, the cylinder body end of first air cylinder is fixedly connected with the side wall of large diameter gear ring, and large diameter gear ring is in the state of being limited not to move through four gears of rectangular distribution, wherein two gears are connected with two motors on the arc plate respectively, the large diameter end of centering cone block is connected with the output end of third air cylinder through first short plate, the top of slide is rotatably connected with one end of screw rod at the top end of strip frame, and second air cylinder is installed at both sides of side strip plate of slide, and the output end of second air cylinder is fixedly connected with the corresponding part of arc plate.

[0005] Preferably, the distance between the central axis of the fixed pipe cone block and the central axis of the centering cone block is adjusted by rotating the screw rod.

[0006] Preferably, both sides of the strip frame are provided with guide rails, and the corresponding parts of the slide are slidably connected between the two guide rails.

[0007] Preferably, a screw hole is formed in the middle of the top end of the strip frame, and the screw hole is threadedly connected with the screw rod.

[0008] Preferably, a mechanical hand connecting piece is installed on the back of the strip frame.

[0009] Preferably, the cylinder body part of the third cylinder is fixedly connected with the corresponding part of the strip-shaped frame.

[0010] Compared with the prior art, the utility model discloses the advantages are in: with the spacing size between the middle axis of the pipe positioning conical block and the middle axis of the centering conical block is the spacing size between the centers of two adjacent round holes on the tube plate, the model positioning of the one end of the pipe in the round hole on the tube plate can be formed, the pipe to be welded and the round hole on the tube plate are in the same center state, the problem of inconvenient and inaccurate positioning of the welded pipe is solved, the accuracy of the pipe welding position is guaranteed, the welding gun with the middle axis of the pipe positioning conical block as the rotation point is configured, the function of implementing the annular moving welding of the annular welding part on the tube plate is realized, and the welding reversing movement is stable, and the welding is more uniform. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, below will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, below description in the drawing is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0012] Fig. 1 It is the overall structure of the utility model three-dimensional view;

[0013] Fig. 2 It is the overall structure of the utility model local structure schematic diagram;

[0014] Fig. 3 It is another angle schematic diagram of the overall structure of the utility model.

[0015] In the drawing: 1, pipe positioning conical block;2, welding gun;3, centering conical block;4, first short plate;5, slide;6, large diameter gear ring;7, gear;8, arc plate;9, motor;10, first cylinder;11, second short plate;12, side strip plate;13, second cylinder;14, third cylinder;15, guide rail;16, strip-shaped frame;17, screw;18, mechanical hand connecting piece. DETAILED DESCRIPTION

[0016] In order to make the purpose, feature, advantage of the utility model more obvious and easy to understand, below will be to the technical scheme in the embodiment of the utility model, to the embodiment of the utility model, it is clear, complete to describe, obviously, the embodiment described below is only a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the utility model protection.

[0017] The technical scheme of the utility model is further illustrated below in combination with the drawings and by specific embodiments.

[0018] In the description of the utility model, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0019] Please refer to Figs. 1-3 As shown in the figure, a tube plate positioning and welding device comprises a tube positioning cone block 1, a welding gun 2, a center positioning cone block 3, a large-diameter tooth ring 6, an arc-shaped plate 8, a first air cylinder 10, a second air cylinder 13, a third air cylinder 14, a strip-shaped frame 16 and a screw rod 17, the tube positioning cone block 1 and the center positioning cone block 3 are on the same vertical plane, the large-diameter end of the tube positioning cone block 1 is fixedly connected with the front bottom of a sliding seat 5 located in the strip-shaped frame 16, the output end of the welding gun 2 is rotatable about the central axis of the tube positioning cone block 1, the back of the welding gun 2 is connected with the output end of the first air cylinder 10 through a second short plate 11, the cylinder body end of the first air cylinder 10 is fixedly connected with the side wall of the large-diameter tooth ring 6, the large-diameter tooth ring 6 is in a state of being limited from moving through four gears 7 distributed in a rectangular manner, two gears 7 are respectively connected with two motors 9 located on the arc-shaped plate 8, the large-diameter end of the center positioning cone block 3 is connected with the output end of the third air cylinder 14 through a first short plate 4, the top of the sliding seat 5 is rotatably connected with one end of a screw rod 17 located at the top end of the strip-shaped frame 16, a second air cylinder 13 is installed at each of the side strip plates 12 located on both sides of the sliding seat 5, and the output end of the second air cylinder 13 is fixedly connected with the corresponding part of the arc-shaped plate 8.

[0020] Further, the distance between the central axis of the tube positioning cone block 1 and the central axis of the center positioning cone block 3 is adjusted by rotating the screw rod 17.

[0021] Further, both side walls inside the strip-shaped frame 16 are provided with guide rails 15, and the corresponding parts of the sliding seat 5 are slidably connected between the two guide rails 15.

[0022] Further, a screw hole is formed in the middle of the top end of the strip-shaped frame 16, and the screw hole is threadedly connected with the screw rod 17.

[0023] Further, a mechanical hand connecting piece 18 is installed on the back of the strip-shaped frame 16.

[0024] Further, the cylinder body part of the third air cylinder 14 is fixedly connected with the corresponding part of the strip-shaped frame 16. Further, the cylinder body part of the third air cylinder 14 is fixedly connected with the corresponding part of the strip-shaped frame 16.

[0025] Working principle: firstly, the whole body is connected with the external mechanical hand through the mechanical hand connecting piece 18, and the precise displacement adjustment is completed, then the fixed pipe taper block 1 is moved close to the centering taper block 3 through the rotating screw 17, so that the distance between the central axis of the fixed pipe taper block 1 and the central axis of the centering taper block 3 is equal to the distance between the centers of the adjacent two holes on the tube plate, then two actions are completed simultaneously: the first action is that the fixed pipe taper block 1 on the connected whole is inserted into the pipe body end port in one hole on the tube plate by the external mechanical hand; the second action is that the centering taper block 3 connected through the first short plate 4 is inserted into the other adjacent hole on the tube plate by the extension of the third cylinder 14 under the adjustment of the displacement of the external mechanical hand, so that the pipe body end and the hole on the tube plate are on the same axis, and the precision of the pipe welding position is ensured.

[0026] After the above operation is completed, the first cylinder 10 and the second cylinder 13 are operated synchronously to adjust the position of the finally connected welding gun 2, so that the output end of the welding gun 2 is close to the annular gap between the pipe body end and the hole on the tube plate, then the motor 9 drives the gear 7 to rotate, so that the large-diameter gear ring 6 meshing with the gear 7 and the welding gun 2 connected through the first cylinder 10 are in a slow rotating state, since the output end of the welding gun 2 is the rotation point of the central axis of the fixed pipe taper block 1, so the annular movement welding can be completed.

[0027] Compared with the prior art, the difference lies in that the distance between the central axis of the fixed pipe taper block 1 and the central axis of the centering taper block 3 is equal to the distance between the centers of the adjacent two holes on the tube plate, so that the model positioning of the pipe body end in the hole on the tube plate can be formed, which is beneficial to the pipe body to be welded and the hole on the tube plate being in the same center state, and the precision of the pipe welding position is ensured, and the welding gun 2 with the central axis of the fixed pipe taper block 1 as the rotation point is configured, so that the annular movement welding function of the annular welding part on the tube plate is realized, and the welding reversing movement is stable, and the welding is more uniform.

[0028] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the essential elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0029] The above-described above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A tube sheet positioning and welding apparatus, characterized by: The utility model provides a welding gun automatic centering device, including fixed pipe cone block (1), welding torch (2), centering cone block (3), large diameter gear ring (6), arc plate (8), first cylinder (10), second cylinder (13), third cylinder (14), strip frame (16) and screw rod (17), fixed pipe cone block (1) with centering cone block (3) are in same vertical plane, and the large diameter end of fixed pipe cone block (1) is mutually fixedly connected with the front bottom of sliding seat (5) in strip frame (16), and the output end of welding torch (2) is the rotation point of the central axis of fixed pipe cone block (1), and the back of welding torch (2) is connected with the output end of first cylinder (10) through second short plate (11), the cylinder body end of first cylinder (10) is fixedly connected with the lateral wall of large diameter gear ring (6), and large diameter gear ring (6) is in the state of being limited immovably through four gearings (7) of rectangular distribution, two gearings (7) are connected with two motors (9) on arc plate (8) respectively, the large diameter end of centering cone block (3) is connected with the output end of third cylinder (14) through first short plate (4), the top of sliding seat (5) is rotatably connected with one end of screw rod (17) at the top end of strip frame (16), and second cylinder (13) is installed at both sides of the lateral strip board (12) of sliding seat (5), and the output end of second cylinder (13) is fixedly connected with the corresponding part of arc plate (8).

2. A tube sheet tack welding apparatus as defined in claim 1, wherein: The distance between the central axis of fixed pipe cone block (1) and the central axis of centering cone block (3) is adjusted by the rotation of screw rod (17).

3. A tube sheet tack welding apparatus as defined in claim 1 wherein: Both sides of the inside of strip frame (16) are provided with guide rails (15), and the corresponding parts of sliding seat (5) are slidably connected between the two guide rails (15).

4. A tube sheet tack welding apparatus as defined in claim 1 wherein: A screw hole is formed in the middle of the top end of strip frame (16), and the screw hole is threadedly connected with screw rod (17).

5. A tube sheet tack welding apparatus as defined in claim 1 wherein: A mechanical hand connecting piece (18) is installed on the back of strip frame (16).

6. A tube sheet tack welding apparatus as defined in claim 1 wherein: The cylinder body part of third cylinder (14) is fixedly connected with the corresponding part of strip frame (16).

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