A positioning tool for welding of a pipe and a flange of a ship

Abstract

This utility model relates to the field of welding fixture technology and discloses a positioning fixture for welding marine pipes and flanges. This positioning fixture for welding marine pipes and flanges adopts a dual-set positioning fixture body working mode. Each set of positioning fixture bodies consists of two fixed servo hollow chuck assemblies, guide rail assemblies, and movable servo hollow chuck assemblies, guide rail assemblies, and movable lifting roller clamping assemblies, divided into two workstations. This allows for simultaneous operation of both workstations. One workstation assembles the pipes and flanges, while the other workstation welds them. The welding and assembly of the two sets of pipes and their corresponding flanges can be carried out synchronously, reducing welding waiting time. Each set of positioning fixture bodies has two workstations, totaling four workstations, enabling simultaneous welding or assembly of four sets of pipes and flanges. This one-time loading reduces product clamping and positioning time, improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, specifically to an automatic positioning and clamping flexible auxiliary tooling suitable for welding small-diameter pipes to flanges of corresponding pipe diameter models. Background Technology

[0002] In shipbuilding, the processing and installation of piping systems accounts for about 30% of the overall shipbuilding workload. Small-diameter pipes and pipe fittings are complex in variety, and the processing of small-diameter pipes is still done by manual welding, which is inefficient. With the emergence of intelligent pipe processing production lines, there is an increasing demand for automated auxiliary equipment in the pipe processing production process.

[0003] Currently, the existing technologies used for automatic clamping and positioning in automated pipe processing production lines generally face the following challenges: 1. The specifications and lengths of pipes and flanges vary widely, raising questions about their compatibility; 2. Whether the welding of pipes and flanges can meet the cycle time requirements of automated pipe processing production lines; 3. Excessive pipe length can lead to deflection and deformation after processing. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a positioning fixture for welding pipes and flanges in ships. It adopts a dual-set positioning fixture body working mode, with each set of positioning fixture body divided into two workstations, enabling simultaneous operation of both workstations. The welding and assembly of two sets of pipes and their corresponding flanges can be carried out synchronously, reducing welding waiting time, improving production efficiency, and solving the technical problem of difficulty in positioning, clamping, assembling, and welding pipes and flanges in existing technologies.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for welding pipes and flanges in ships, comprising a positioner base, with positioners installed at opposite ends of the positioner base, and frames driven to rotate on both sides of the positioners. A pair of active rotating components are symmetrically installed at both ends of one side of the frame, and a pair of driven rotating components are symmetrically installed at both ends of the other side of the frame. A clamping base plate is installed between each active rotating component and each driven rotating component. A set of positioning fixture bodies is installed on each clamping base plate. Each set of positioning fixture bodies includes a pair of fixed servo hollow chuck assemblies and a pair of guide rail assemblies symmetrically installed on the clamping base plate. A movable servo hollow chuck assembly is slidably installed on each guide rail assembly. A movable lifting roller clamping assembly is also slidably installed on the guide rail assembly between each fixed servo hollow chuck assembly and each movable servo hollow chuck assembly.

[0008] Furthermore, the fixed servo hollow chuck assembly includes a fixed chuck support, a first through hole is provided on the upper semi-circular surface of the fixed chuck support, and a first servo hollow chuck is installed at the position opposite to the first through hole. The bottom of the fixed chuck support is a cuboid.

[0009] Furthermore, each of the aforementioned mobile servo hollow chuck components includes a mobile chuck support. A second through hole is formed on the upper semi-circular surface of the mobile chuck support, and a second servo hollow chuck is installed at the corresponding position of the second through hole. The bottom of the mobile chuck support is a hollow cuboid, with first slider connectors installed at the four corners of its bottom surface. A first slider is installed on each first slider connector. A first servo motor reducer is installed on the hollow inner top surface of the support. A first servo motor is installed at the input end of the first servo motor reducer, and the output shaft of the first servo motor reducer passes through the bottom and is fitted with a first gear. This component, in conjunction with a mobile lifting roller clamping device, is compatible with the positioning of pipes of different lengths and flanges of different models.

[0010] Furthermore, each of the movable lifting roller clamping assemblies includes a base, on which a hollow outer shell is mounted. Second slider connectors are respectively mounted at the four corners of the base's bottom surface, and a second slider is mounted on each second slider connector. A second servo motor reducer is mounted on the base, with a second servo motor mounted at the input end of the reducer. The output shaft of the reducer passes through the bottom and is fitted with a second gear. A lifting servo cylinder is mounted on the base, and a lifting servo cylinder connector is mounted on the lifting end of the cylinder. The component comprises a lifting servo cylinder connecting block with a roller bracket, a clamping cylinder connecting seat, a clamping cylinder at one end of the clamping cylinder connecting seat, a pressure arm at the telescopic end of the clamping cylinder and the other end of the clamping cylinder connecting seat, a pressure wheel connecting block at the other end of the pressure arm, a pair of pressure wheels symmetrically mounted at both ends of the pressure wheel connecting block, and a pair of support wheels symmetrically mounted on the roller bracket. The two pressure wheels and the two support wheels are arranged opposite each other in the vertical direction. This component is used to position and clamp pipes of different diameters and lengths.

[0011] Furthermore, each guide rail assembly includes a pair of guide rails symmetrically mounted on the fixture base plate, with a rack installed between the two guide rails. The mobile servo hollow chuck assembly and the mobile lifting roller clamping assembly move on the guide rail assembly to control the positioning accuracy of the entire fixture.

[0012] Furthermore, the frame is rotated by the positioners on both sides at an angle ranging from 0 to 270°.

[0013] Furthermore, the rotation angle range of each group of positioning fixture bodies driven by the active rotating component and the driven rotating component is 0-360°; each group of positioning fixture bodies can be compatible with the positioning and clamping of pipes of different lengths and corresponding flange models.

[0014] Furthermore, eight blocking blocks are installed on the base plate of the clamp and at both ends of each of the guide rail assemblies. These blocking blocks are used to prevent the mobile servo hollow chuck assembly and the mobile lifting roller clamping assembly from sliding out of the guide rail assembly.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a positioning fixture for welding pipes and flanges in ships, which has the following advantages:

[0017] 1. This positioning fixture for welding pipes and flanges in ships adopts a dual-set positioning fixture main body working mode. Each set of positioning fixture main body consists of two sets of fixed servo hollow chuck assemblies, guide rail assemblies, mobile servo hollow chuck assemblies, guide rail assemblies, and mobile lifting roller clamping assemblies, which are divided into two workstations. It can realize the simultaneous operation of two workstations. One workstation is used for assembling pipes and flanges, while the other workstation is used for welding pipes and flanges. The welding and assembly of two sets of pipes and their corresponding flanges can be carried out synchronously, reducing welding waiting time. Each set of positioning fixture main body has two workstations, that is, a total of four workstations, which can realize the simultaneous welding or assembly of four sets of pipe and flange products, loading parts at one time, reducing the clamping and positioning time of products, and improving production efficiency.

[0018] 2. The mobile lifting roller clamping assembly supports and clamps pipes of different lengths. It moves to different positions to position and support the pipe according to its length. Two mobile lifting roller clamping assemblies at each station can solve the problem of deflection and bending caused by excessively long pipes, reducing welding deformation. The fixed servo hollow chuck assembly and the mobile servo hollow chuck assembly can position and clamp different types of flanges. The mobile servo hollow chuck assembly can move to the other end to position the flange according to the pipe length. Each positioning fixture can weld and assemble two sets of products, adapting to pipes with single or double flanges, different pipe diameters and lengths, and corresponding flange assembly and welding functions, thus improving practicality. Attached Figure Description

[0019] Figure 1 This is a perspective view of a positioning fixture for welding pipes and flanges in ships, according to the present invention.

[0020] Figure 2 for Figure 1 A stereoscopic view from another perspective;

[0021] Figure 3 for Figure 1 A 3D view of a fixed servo hollow chuck assembly;

[0022] Figure 4 for Figure 1 3D view of the hollow chuck assembly for China Mobile servo systems;

[0023] Figure 5 for Figure 1 A 3D view of the lifting roller clamping assembly of China Mobile.

[0024] Figure 6 for Figure 1 3D view of the center guide rail assembly;

[0025] In the diagram: 1. Positioner base; 2. Positioner; 3. Frame; 4. Active rotation assembly; 5. Driven rotation assembly; 6. Fixed servo hollow chuck assembly; 601. First servo hollow chuck; 602. Fixed chuck support; 603. First through hole; 7. Moving servo hollow chuck assembly; 701. Second servo hollow chuck; 702. Moving chuck support; 703. First slider connector; 704. First gear; 705. First gear; 706. First servo motor; 707. First servo motor reducer; 708. Second through hole; 8. Moving lifting roller clamping assembly; 80 1. Base; 802. Second slider; 803. Second gear; 804. Second servo motor; 805. Second servo motor reducer; 806. Lifting servo cylinder; 807. Second slider connector; 808. Clamping cylinder; 809. Clamping cylinder connecting seat; 810. Pressure arm; 811. Pressure roller connecting block; 812. Pressure roller; 813. Support roller; 814. Support roller bracket; 815. Lifting servo cylinder connecting block; 816. Outer shell; 9. Guide rail assembly; 901. Guide rail; 902. Rack; 10. Blocking block; 11. Fixture base plate; 12. Pipe; 13. Flange. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-2A positioning fixture for welding pipes and flanges in ships includes a positioner base 1, with positioners 2 installed at opposite ends of the positioner base 1. Each positioner 2 has a rotating frame 3 mounted on it, which is driven to rotate. A pair of active rotating components 4 are symmetrically mounted at both ends of one side of the frame 3, and a pair of driven rotating components 5 are symmetrically mounted at both ends of the other side of the frame 3. A clamping base plate 11 is installed between each active rotating component 4 and each driven rotating component 5. A set of positioning fixture bodies is mounted on each clamping base plate 11. Each set of positioning fixture bodies includes a pair of fixed servo hollow chuck assemblies 6 and a pair of guide rail assemblies 9 symmetrically mounted on the clamping base plate 11. A sliding moving part is slidably mounted on each guide rail assembly 9. The moving servo hollow chuck assembly 7, and the guide rail assembly 9 between each fixed servo hollow chuck assembly 6 and each moving servo hollow chuck assembly 7 are also slidably installed with a moving lifting roller clamping assembly 8; the frame 3 is driven by the positioners 2 on both sides to rotate within an angle range of 0-270°, and each set of positioning fixtures is driven by the active rotation assembly 4 and the driven rotation assembly 5 to rotate within an angle range of 0-360°; each set of positioning fixtures can be compatible with the positioning and clamping of pipes 12 of different lengths and corresponding flanges 13; the fixture base plate 11 is equipped with eight blocking blocks 10 at both ends of each guide rail assembly 9, which are used to prevent the moving servo hollow chuck assembly 7 and the moving lifting roller clamping assembly 8 from sliding out of the guide rail assembly 9.

[0028] Please see Figure 3 The fixed servo hollow chuck assembly 6 includes a fixed chuck support 602. A first through hole 603 is provided on the upper semi-circular surface of the fixed chuck support 602, and a first servo hollow chuck 601 is installed at the relative position of the first through hole 603. The bottom of the fixed chuck support 602 is a cuboid.

[0029] Please see Figure 4 Each mobile servo hollow chuck assembly 7 includes a mobile chuck support 702. A second through hole 708 is provided on the upper semi-circular surface of the mobile chuck support 702, and a second servo hollow chuck 701 is installed at the corresponding position of the second through hole 708. The bottom of the mobile chuck support 702 is a hollow cuboid, with first slider connectors 703 installed at the four corners of its bottom surface. A first slider 704 is installed on each first slider connector 703. A first servo motor reducer 707 is installed on the hollow inner top surface of the first servo motor reducer 707. A first servo motor 706 is installed at the input end of the first servo motor reducer 707, and the output shaft of the first servo motor reducer 707 passes through the bottom and is equipped with a first gear 705. This assembly, in conjunction with a mobile lifting roller clamping device, is compatible with the positioning of pipes 12 of different lengths and flanges 13 of different models.

[0030] Please see Figure 5 Each movable lifting roller clamping assembly 8 includes a base 801, on which a hollow outer shell 816 is mounted. Second slider connectors 807 are respectively mounted at the four corners of the bottom surface of the base 801, and a second slider 802 is mounted on each second slider connector 807. A second servo motor reducer 805 is mounted on the base 801, and a second servo motor 804 is mounted on the input end of the second servo motor reducer 805. The output shaft of the second servo motor reducer 805 passes through the bottom and is equipped with a second gear 803. A lifting servo cylinder 806 is mounted on the base 801, and a lifting servo cylinder connecting block 81 is mounted on the lifting end of the lifting servo cylinder 806. 5. A roller support bracket 814 is installed on the lifting servo electric cylinder connecting block 815. A clamping cylinder connecting seat 809 is installed on the roller support bracket 814. A clamping cylinder 808 is installed at one end of the clamping cylinder connecting seat 809. A pressure arm 810 is installed on the telescopic end of the clamping cylinder 808 and the other end of the clamping cylinder connecting seat 809. A pressure roller connecting block 811 is installed on the other end of the pressure arm 810. A pair of pressure rollers 812 are symmetrically installed at both ends of the pressure roller connecting block 811. A pair of support rollers 813 are symmetrically installed on the roller support bracket 814. The two pressure rollers 812 and the two support rollers 813 are arranged opposite each other in the vertical direction. This component is used to position and clamp pipes 12 of different diameters and lengths.

[0031] Please see Figure 6 Each guide rail assembly 9 includes a pair of guide rails 901 symmetrically mounted on the fixture base plate 11, with a rack 902 installed between the two guide rails 901. The moving servo hollow chuck assembly 7 and the moving lifting roller clamping assembly 8 move on the guide rail assembly 9 to control the positioning accuracy of the entire fixture.

[0032] The working principle of this positioning fixture used for welding pipes and flanges in ships includes the following steps:

[0033] S1. Place the pipes 12 of different lengths to be welded on the moving lifting roller clamping assembly 8 between each fixed servo hollow chuck assembly 6 and each moving servo hollow chuck assembly 7. The pipes 12 are initially supported and positioned by each moving lifting roller clamping assembly 8, that is, the pipes 12 are initially placed on the two rollers 813 of each moving lifting roller clamping assembly 8.

[0034] S2. Install flanges 13 of the same type as the pipes 12 of different lengths in step S1 into each fixed servo hollow chuck assembly 6 and each moving servo hollow chuck assembly 7.

[0035] S3. Start the clamping cylinder 808 in the mobile lifting support roller clamping assembly 8. The extended end of the clamping cylinder 808 extends upward, driving the pressure arm 810 to press downward, so that the two pressure rollers 812 interact downward with the corresponding two support rollers 813, so that the pipe 12 on the support rollers 813 placed in step S1 is adaptively positioned and clamped.

[0036] S4. The frame 3 is rotated within an angle range of 0-270° by the positioners 2 on both sides. At the same time, the main body of the positioning fixture is rotated within an angle range of 0-360° by the active rotating component 4 and the driven rotating component 5 to adjust the appropriate angle and ensure that the pipe 12 and flange 13 are in the optimal working position.

[0037] S5. Each positioning fixture consists of two sets of fixed servo hollow chuck assemblies 6, guide rail assemblies 9, mobile servo hollow chuck assemblies 7, guide rail assemblies 9, and mobile lifting roller clamping assemblies 8, which are divided into two workstations. One workstation assembles the pipe 12 and the flange 13, while the other workstation welds the pipe 12 and the flange 13. The welding and assembly of the two sets of pipes 12 and their corresponding flanges 13 can work synchronously and then repeat in a cycle.

[0038] In summary, the positioning fixture for welding marine pipes and flanges adopts a dual-set positioning fixture main body working mode. Each set of positioning fixture main body consists of two sets of fixed servo hollow chuck assemblies 6, guide rail assemblies 9, mobile servo hollow chuck assemblies 7, guide rail assemblies 9, and mobile lifting roller clamping assemblies 8, which are divided into two workstations. It can realize the simultaneous operation of the two workstations. One workstation is used for assembling the pipe 12 and flange 13, while the other workstation is used for welding the pipe 12 and flange 13. The welding and assembly of the two sets of pipes 12 and their corresponding flanges 13 can be carried out synchronously, reducing welding waiting time. Each set of positioning fixture main body has two workstations, that is, a total of four workstations, which can realize the simultaneous welding or assembly of four sets of pipes 12 and flanges 13 products, loading parts at one time, reducing the clamping and positioning time of products, and improving production efficiency.

[0039] The mobile lifting roller clamping assembly 8 supports and clamps pipes 12 of different lengths. It moves to different positions to position and support the pipe 12 according to its length. Using two mobile lifting roller clamping assemblies 8 at each station can solve the problem of deflection and bending caused by excessively long pipes 12, reducing welding deformation. The fixed servo hollow chuck assembly 6 and the mobile servo hollow chuck assembly 7 can position and clamp flanges of different models. The mobile servo hollow chuck assembly 7 can move to the other end to position the flange according to the length of the pipe 12. Each positioning fixture can weld and assemble two sets of products, adapting to pipes with single or double flanges, different pipe diameters and lengths, and corresponding flange assembly and welding functions, thus improving practicality.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for welding pipes and flanges in ships, comprising a positioner base (1), wherein positioners (2) are installed at opposite ends of the positioner base (1), and each of the positioners (2) on both sides is equipped with a frame (3) that is driven to rotate by the positioner, characterized in that: A pair of active rotating components (4) are symmetrically installed at both ends of one side of the frame (3), and a pair of driven rotating components (5) are symmetrically installed at both ends of the other side of the frame (3). A fixture base plate (11) is installed between each active rotating component (4) and each driven rotating component (5), and a set of positioning tooling bodies is installed on each fixture base plate (11). Each positioning fixture body includes a pair of fixed servo hollow chuck assemblies (6) and a pair of guide rail assemblies (9) symmetrically installed on the fixture base plate (11). A movable servo hollow chuck assembly (7) is slidably installed on each guide rail assembly (9). A movable lifting roller clamping assembly (8) is also slidably installed on the guide rail assembly (9) between each fixed servo hollow chuck assembly (6) and each movable servo hollow chuck assembly (7).

2. The positioning fixture for welding marine pipes and flanges according to claim 1, characterized in that: The fixed servo hollow chuck assembly (6) includes a fixed chuck support (602). A first through hole (603) is provided on the upper semi-circular surface of the fixed chuck support (602), and a first servo hollow chuck (601) is installed at the relative position of the first through hole (603). The bottom of the fixed chuck support (602) is a cuboid.

3. A positioning fixture for welding marine pipes and flanges according to claim 1, characterized in that: Each of the aforementioned mobile servo hollow chuck assemblies (7) includes a mobile chuck support (702). A second through hole (708) is provided on the upper semi-circular surface of the mobile chuck support (702), and a second servo hollow chuck (701) is installed at the relative position of the second through hole (708). The bottom of the mobile chuck support (702) is a hollow cuboid, and a first slider connector (703) is installed at each of the four corners of its bottom surface. A first slider (704) is installed on each first slider connector (703). A first servo motor reducer (707) is installed on the hollow inner top surface of the first servo motor reducer (707). A first servo motor (706) is installed at the input end of the first servo motor reducer (707). The output shaft of the first servo motor reducer (707) passes through the bottom and is equipped with a first gear (705).

4. A positioning fixture for welding pipes and flanges in ships according to claim 1, characterized in that: Each of the movable lifting roller clamping assemblies (8) includes a base (801), on which a hollow outer shell (816) is mounted. Second slider connectors (807) are respectively mounted at the four corners of the bottom surface of the base (801), and a second slider (802) is mounted on each second slider connector (807). A second servo motor reducer (805) is mounted on the base (801), and a second servo motor (804) is mounted at the input end of the second servo motor reducer (805). The output shaft of the second servo motor reducer (805) passes through the bottom and is equipped with a second gear (803). A lifting servo cylinder (806) is mounted on the base (801), and a lifting servo cylinder connecting block (815) is mounted at the lifting end of the lifting servo cylinder (806). A roller bracket (814) is installed on the lifting servo electric cylinder connecting block (815). A clamping cylinder connecting seat (809) is installed on the roller bracket (814). A clamping cylinder (808) is installed at one end of the clamping cylinder connecting seat (809). A pressure arm (810) is installed on the telescopic end of the clamping cylinder (808) and the other end of the clamping cylinder connecting seat (809). A pressure roller connecting block (811) is installed on the other end of the pressure arm (810). A pair of pressure rollers (812) are symmetrically installed at both ends of the pressure roller connecting block (811). A pair of support rollers (813) are symmetrically installed on the roller bracket (814). The two pressure rollers (812) and the two support rollers (813) are arranged opposite each other in the vertical direction. This component is used to position clamps for pipes (12) of different diameters and lengths.

5. A positioning fixture for welding pipes and flanges in ships according to claim 1, characterized in that: Each of the guide rail assemblies (9) includes a pair of guide rails (901) symmetrically mounted on the fixture base plate (11), with a rack (902) installed between the two guide rails (901). The mobile servo hollow chuck assembly (7) and the mobile lifting roller clamping assembly (8) travel on the guide rail assembly (9).

6. A positioning fixture for welding marine pipes and flanges according to claim 1, characterized in that: The frame (3) is rotated by the positioners (2) on both sides, with an angle range of 0-270°.

7. A positioning fixture for welding marine pipes and flanges according to claim 1, characterized in that: Each group of positioning fixtures is rotated within a range of 0-360° by the active rotating component (4) and the driven rotating component (5); each group of positioning fixtures is compatible with the positioning and clamping of pipes (12) of different lengths and corresponding flanges (13).

8. A positioning fixture for welding marine pipes and flanges according to claim 1, characterized in that: On the clamp base plate (11) and at both ends of each of the guide rail assemblies (9), there are eight blocking blocks (10) in total, which are used to prevent the mobile servo hollow chuck assembly (7) and the mobile lifting roller clamping assembly (8) from sliding out of the guide rail assembly (9) when they slide.

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